From: wessels <> Date: Fri, 21 Nov 1997 09:45:48 +0000 (+0000) Subject: gindent X-Git-Tag: SQUID_3_0_PRE1~4499 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=04a725db3c3a477a0380828416bfd2f2ce3c53de;p=thirdparty%2Fsquid.git gindent --- diff --git a/snmplib/snmp_api.c b/snmplib/snmp_api.c index 187a9ff927..b899d18b0e 100644 --- a/snmplib/snmp_api.c +++ b/snmplib/snmp_api.c @@ -1,26 +1,24 @@ - - -/*********************************************************** - Copyright 1989 by Carnegie Mellon University - - All Rights Reserved - -Permission to use, copy, modify, and distribute this software and its -documentation for any purpose and without fee is hereby granted, -provided that the above copyright notice appear in all copies and that -both that copyright notice and this permission notice appear in -supporting documentation, and that the name of CMU not be -used in advertising or publicity pertaining to distribution of the -software without specific, written prior permission. - -CMU DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING -ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL -CMU BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR -ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, -WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, -ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS -SOFTWARE. -******************************************************************/ +/* + * Copyright 1989 by Carnegie Mellon University + * + * All Rights Reserved + * + * Permission to use, copy, modify, and distribute this software and its + * documentation for any purpose and without fee is hereby granted, + * provided that the above copyright notice appear in all copies and that + * both that copyright notice and this permission notice appear in + * supporting documentation, and that the name of CMU not be + * used in advertising or publicity pertaining to distribution of the + * software without specific, written prior permission. + * + * CMU DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING + * ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL + * CMU BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR + * ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, + * WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, + * ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + */ /* * snmp_api.c - API for access to snmp. */ @@ -137,7 +135,7 @@ api_errstring(snmp_errnumber) } } -#if 0 +#if UNUSED_CODE /* * Gets initial request ID for all transactions. */ @@ -403,20467 +401,50 @@ sync_with_agent(session) if (response) snmp_free_pdu(response); **/ } -#if 1/***/ BUG_SNMPTRACE */cked for testing purposes */e key! replace... - */ - * ÿ¯ùsnmplib/snmp_api.cc.hÿ°…<Ðlib/snmp_api.c~~ñÿ±<ðÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±«=ÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²=0ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²Š=Pÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ³ -=pÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³‚ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×Áÿ³ùÿ´=ø%D(ÿ´_=à\BØÿ´©=˜4BØÿ´ø=ÈHBØÿµB>ÿµ]ÿµmÿµzÿµ >(ÿµ·ÿµÉÿµÖÿµï>@ÿ¶ÿ¶ ÿ¶4ÿ¶Pÿ¶rÿ¶~ÿ¶ˆ0ÿ¶Ÿ4¨ÿ¶·ÿ¶Ù‰èÿ·ÿ·#ÿ·/ÿ·>>Xÿ·V3/usr/people/wessels/.indent.proÿ¯èÿ¯ùÿ° ÿ°ÿ°.ÿ°?ÿ°Mÿ°[ÿ°pÿ°…ÿ°•ÿ°£ÿ°²ÿ°Åÿ°Ûÿ°ñÿ± -ÿ±ÿ±2ÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±™ÿ±«ÿ±ºÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²ÿ²ÿ²2ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²ÿ²Šÿ²™ÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ²öÿ³ -ÿ³ ÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³sÿ³‚ÿ³‘ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×ÿ³çÿ³ùÿ´ÿ´ÿ´ÿ´)ÿ´3ÿ´Cÿ´Oÿ´_ÿ´kÿ´tÿ´ÿ´ÿ´Ÿÿ´©ÿ´·ÿ´Åÿ´Òÿ´Ýÿ´íÿ´øÿµÿµÿµÿµ)ÿµ7ÿµBÿµMÿµ]ÿµmÿµzÿµ‰ÿµ ÿµ«ÿµ·ÿµÉÿµÖÿµâÿµïÿ¶ÿ¶ÿ¶ ÿ¶4ÿ¶?ÿ¶Pÿ¶bÿ¶rÿ¶~ÿ¶ˆÿ¶”ÿ¶Ÿÿ¶«ÿ¶·ÿ¶Éÿ¶Ùÿ¶íÿ·ÿ·ÿ·#ÿ·/ÿ·>ÿ·Lÿ·Vÿ·fÿ·q@ - -/*********************************************************** - Copyright 1989 by Carnegie Mellon University - - All Rights Reserved - -Permission to use, copy, modify, and distribute this software and its -documentation for any purpose and without fee is hereby granted, -provided that the above copyright notice appear in all copies and that -both that copyright notice and this permission notice appear in -supporting documentation, and that the name of CMU not be -used in advertising or publicity pertaining to distribution of the -software without specific, written prior permission. - -CMU DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING -ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL -CMU BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR -ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, -WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, -ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS -SOFTWARE. -******************************************************************/ -/* - * snmp_api.c - API for access to snmp. - */ -#define DEBUG_SNMPTRACE 0 /* set to 1 to print all SNMP actions */ -#define DEBUG_SNMPFULLDUMP 0 /* set to 1 to dump all SNMP packets */ - -#include -#include -#include -#include -#include -#include -#include -#ifdef linux -#include -#include -#include -#include -#endif - - -#include "asn1.h" -#include "snmp.h" -#include "snmp_impl.h" -#include "snmp_api.h" -#include "snmp_client.h" - -#define PACKET_LENGTH 4500 - -#ifndef BSD4_3 -#define BSD4_2 -#endif - -#if !defined(BSD4_3) && !defined(linux) && !defined(sun) - -typedef long fd_mask; -#define NFDBITS (sizeof(fd_mask) * NBBY) /* bits per mask */ - -#define FD_SET(n, p) ((p)->fds_bits[(n)/NFDBITS] |= (1 << ((n) % NFDBITS))) -#define FD_CLR(n, p) ((p)->fds_bits[(n)/NFDBITS] &= ~(1 << ((n) % NFDBITS))) -#define FD_ISSET(n, p) ((p)->fds_bits[(n)/NFDBITS] & (1 << ((n) % NFDBITS))) -#define FD_ZERO(p) bzero((char *)(p), sizeof(*(p))) -#endif - -oid default_enterprise[] = -{1, 3, 6, 1, 4, 1, 3, 1, 1}; /* enterprises.cmu.systems.cmuSNMP */ - -#define DEFAULT_COMMUNITY "public" -#define DEFAULT_REMPORT SNMP_PORT -#define DEFAULT_ENTERPRISE default_enterprise -#define DEFAULT_TIME 0 -#define DEFAULT_MMS 1389 /* large, randomly picked for testing purposes */ - -/* - * Internal information about the state of the snmp session. - */ -struct snmp_internal_session { - int sd; /* socket descriptor for this connection */ - ipaddr addr; /* address of connected peer */ - struct request_list *requests; /* Info about outstanding requests */ -}; - -/* - * A list of all the outstanding requests for a particular session. - */ -struct request_list { - struct request_list *next_request; - u_long request_id; /* request id */ - int retries; /* Number of retries */ - u_long timeout; /* length to wait for timeout */ - struct timeval time; /* Time this request was made */ - struct timeval expire; /* time this request is due to expire */ - struct snmp_pdu *pdu; /* The pdu for this request (saved so it can be retransmitted */ -}; - -/* - * The list of active/open sessions. - */ -struct session_list { - struct session_list *next; - struct snmp_session *session; - struct snmp_internal_session *internal; -}; - -struct session_list *Sessions = NULL; - -u_long Reqid = 0; -int snmp_errno = 0; - -char *api_errors[4] = -{ - "Unknown session", - "Unknown host", - "Invalid local port", - "Unknown Error" -}; - - -void sync_with_agent(); -int parse_app_community_string(); -void snmp_synch_setup(); -int snmp_synch_response(); -void md5Digest(); - - -static char * -api_errstring(snmp_errnumber) - int snmp_errnumber; -{ - if (snmp_errnumber <= SNMPERR_BAD_SESSION && snmp_errnumber >= SNMPERR_GENERR) { - return api_errors[snmp_errnumber + 4]; - } else { - return "Unknown Error"; - } -} - -#if 0 -/* - * Gets initial request ID for all transactions. - */ -static void -init_snmp() -{ - struct timeval tv; - - gettimeofday(&tv, (struct timezone *) 0); - srandom(tv.tv_sec ^ tv.tv_usec); - Reqid = random(); -} - -#endif - /* - * Dump snmp packet to stdout: + * Unlink one element from input request list, + * then free it and it's pdu. */ static void -snmp_print_packet(packet, length, addr, code) - char *packet; - int length; - ipaddr addr; - int code; +free_one_request(isp, orp) + struct snmp_internal_session *isp; + struct request_list *orp; { - if (length < 0) { + struct request_list *rp; + if (!orp) return; - } - if (code <= 0) { /* received */ - printf("\nReceived %4d bytes from ", length); - } else { /* sending */ - printf("\nSending %4d bytes to ", length); - } - printf("%s:", inet_ntoa(addr.sin_addr)); -#if DEBUG_SNMPFULLDUMP - for (count = 0; count < length; count++) { - if ((count & 15) == 0) { - printf("\n "); + if (isp->requests == orp) { + isp->requests = orp->next_request; /* unlink head */ + } else { + for (rp = isp->requests; rp; rp = rp->next_request) { + if (rp->next_request == orp) { + rp->next_request = orp->next_request; /* unlink element */ + break; + } } - printf("%02X ", (int) (packet[count] & 255)); } -#endif - fflush(stdout); + if (orp->pdu != NULL) { + snmp_free_pdu(orp->pdu); + } + free((char *) orp); } -#if DEBUG_SNMPTRACE /* - * Print request + * Free each element in the input request list. */ -#define TRACE_SEND (0) -#define TRACE_RECV (1) -#define TRACE_TIMEOUT (2) static void -snmp_print_trace(slp, rp, code) - struct session_list *slp; +free_request_list(rp) struct request_list *rp; - int code; -{ - int reqid = 0, retries = 1; - if (rp) { - reqid = rp->request_id; - retries = rp->retries; - } - printf("\n Session %2d ReqId %4d ", slp->internal->sd, reqid); - switch (code) { - case TRACE_SEND: - printf("send pdu (%d)", retries); - break; - case TRACE_RECV: - printf("recv pdu"); - break; - case TRACE_TIMEOUT: - printf("time out"); - break; - } - fflush(stdout); -} -#endif /* DEBUG_SNMPTRACE */ - - - - -/* - * Sets up the session with the snmp_session information provided - * by the user. Then opens and binds the necessary UDP port. - * A handle to the created session is returned (this is different than - * the pointer passed to snmp_open()). On any error, NULL is returned - * and snmp_errno is set to the appropriate error code. - */ -struct snmp_session * -snmp_open(session) - struct snmp_session *session; -{ - struct session_list *slp; - struct snmp_internal_session *isp; - u_char *cp; - int sd; - u_long addr; - struct sockaddr_in me; - struct hostent *hp; - struct servent *servp; - extern int check_received_pkt(); - - /* Copy session structure and link into list */ - slp = (struct session_list *) calloc(1, sizeof(struct session_list)); - slp->internal = isp = (struct snmp_internal_session *) calloc(1, sizeof(struct snmp_internal_session)); - bzero((char *) isp, sizeof(struct snmp_internal_session)); - slp->internal->sd = -1; /* mark it not set */ - slp->session = (struct snmp_session *) calloc(1, sizeof(struct snmp_session)); - bcopy((char *) session, (char *) slp->session, sizeof(struct snmp_session)); - session = slp->session; - /* now link it in. */ - slp->next = Sessions; - Sessions = slp; - - /* - * session now points to the new structure that still contains pointers to - * data allocated elsewhere. Some of this data is copied to space malloc'd - * here, and the pointer replaced with the new one. - */ - - if (session->peername != NULL) { - cp = (u_char *) calloc(1, (unsigned) strlen(session->peername) + 1); - strcpy((char *) cp, session->peername); - session->peername = (char *) cp; - } - if (session->retries == SNMP_DEFAULT_RETRIES) - session->retries = SNMP_API_DEFAULT_RETRIES; - if (session->timeout == SNMP_DEFAULT_TIMEOUT) - session->timeout = SNMP_API_DEFAULT_TIMEOUT; - if (session->MMS == 0) - session->MMS = DEFAULT_MMS; - isp->requests = NULL; - - - /* Fill in defaults if necessary */ - if (session->community_len != SNMP_DEFAULT_COMMUNITY_LEN) { - if (*session->community == '+') { - session->community_len--; - cp = (u_char *) calloc(1, (unsigned) session->community_len); - bcopy((char *) session->community + 1, (char *) cp, - session->community_len); - session->version = SNMP_VERSION_2C; - } else { - cp = (u_char *) calloc(1, (unsigned) session->community_len); - bcopy((char *) session->community, (char *) cp, - session->community_len); - } - - } else { - session->community_len = strlen(DEFAULT_COMMUNITY); - cp = (u_char *) calloc(1, (unsigned) session->community_len); - bcopy((char *) DEFAULT_COMMUNITY, (char *) cp, session->community_len); - } - - /* Set up connections */ - sd = socket(AF_INET, SOCK_DGRAM, 0); - if (sd < 0) { - perror("socket"); - snmp_errno = SNMPERR_GENERR; - if (!snmp_close(session)) { - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", api_errstring(snmp_errno)); - exit(1); - } - return 0; - } - isp->sd = sd; - - if (session->peername != SNMP_DEFAULT_PEERNAME) { - if ((addr = inet_addr(session->peername)) != -1) { - bcopy((char *) &addr, (char *) &isp->addr.sin_addr, sizeof(isp->addr.sin_addr)); - } else { - hp = gethostbyname(session->peername); - if (hp == NULL) { - fprintf(stderr, "unknown host: %s\n", session->peername); - snmp_errno = SNMPERR_BAD_ADDRESS; - if (!snmp_close(session)) { - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", api_errstring(snmp_errno)); - exit(2); - } - return 0; - } else { - bcopy((char *) hp->h_addr, (char *) &isp->addr.sin_addr, hp->h_length); - } - } - isp->addr.sin_family = AF_INET; - if (session->remote_port == SNMP_DEFAULT_REMPORT) { - /*servp = getservbyname("snmp", "udp"); */ - servp = NULL; - if (servp != NULL) { - isp->addr.sin_port = servp->s_port; - } else { - isp->addr.sin_port = htons(SNMP_PORT); - } - } else { - isp->addr.sin_port = htons(session->remote_port); - } - } else { - isp->addr.sin_addr.s_addr = SNMP_DEFAULT_ADDRESS; - } - - me.sin_family = AF_INET; - me.sin_addr.s_addr = INADDR_ANY; - me.sin_port = htons(session->local_port); - if (bind(sd, (struct sockaddr *) &me, sizeof(me)) != 0) { - perror("bind"); - snmp_errno = SNMPERR_BAD_LOCPORT; - if (!snmp_close(session)) { - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", - api_errstring(snmp_errno)); - exit(3); - } - return 0; - } - if (*cp == '/') { - session->authenticator = check_received_pkt; - sync_with_agent(session); - parse_app_community_string(session); - session->qoS |= USEC_QOS_GENREPORT; - } - /* replace comm pointer with pointer to new data: */ - session->community = cp; - - return session; -} - -void -sync_with_agent(session) - struct snmp_session *session; -{ - struct snmp_pdu *pdu, *response = 0; - int status; - - session->qoS = USEC_QOS_GENREPORT; - session->userLen = 6; - session->version = SNMP_VERSION_2; - strcpy(session->userName, "public"); - - snmp_synch_setup(session); - pdu = snmp_pdu_create(GET_REQ_MSG); - status = snmp_synch_response(session, pdu, &response); - - if (status == STAT_SUCCESS) { - memcpy(session->agentID, response->params.agentID, 12); - - /* save the clocks -- even though they are not authentic */ - session->agentBoots = response->params.agentBoots; - session->agentTime = response->params.agentTime; - session->agentClock = response->params.agentTime - time(NULL); - - } else { - if (status == STAT_TIMEOUT) { - printf("No Response from %s\n", session->peername); - } else { /* status == STAT_ERROR */ - printf("An error occurred, Quitting\n"); - } - exit(-1); - } - - /** freed to early: - snmp_free_pdu(pdu); - if (response) snmp_free_pdu(response); - **/ -} -ring(fp, token) - FILE *fp; - char *token; -{ - int ch; - - ch = ' '; - *token = '\0'; /* make the token empty */ - - while (ch != -1) { - ch = getc(fp); - if (ch == '\n') - Line++; - else if (ch == '"') { - return QUOTESTRING; - } - } - - return 0; -} - -/* - * This routine parses a string like { blah blah blah } and returns OBJID if - * it is well formed, and NULL if not. - */ -static int -tossObjectIdentifier(fp) - FILE *fp; -{ - int ch; - - ch = getc(fp); -/* ch = last; = ' '? */ - /* skip all white space */ - while (isspace(ch) && ch != -1) { - ch = getc(fp); - if (ch == '\n') - Line++; - } - if (ch != '{') - return 0; - - while (ch != -1) { - ch = getc(fp); - - if (ch == '\n') - Line++; - else if (ch == '}') - return OBJID; - } - -/* last = ch; */ - return 0; -} -rn 0; - } - /* - * Optional parts of the OBJECT-TYPE macro - */ - type = get_token(fp, token); - while (type != EQUALS) { - switch (type) { - case DESCRIPTION: - type = get_token(fp, token); - if (type != QUOTESTRING) { - print_error("Bad DESCRIPTION", token, type); - free_node(np); - return 0; - } -#ifdef TEST - printf("Description== \"%.50s\"\n", quoted_string_buffer); -#endif - np->description = quoted_string_buffer; - quoted_string_buffer = (char *) calloc(1, MAXQUOTESTR); - break; - - case REFERENCE: - type = get_token(fp, token); - if (type != QUOTESTRING) { - print_error("Bad DESCRIPTION", token, type); - free_node(np); - return 0; - } - break; - case INDEX: - case DEFVAL: - case AUGMENTS: - case NUM_ENTRIES: - if (tossObjectIdentifier(fp) != OBJID) { - print_error("Bad Object Identifier", token, type); - free_node(np); - return 0; - } - break; - - default: - print_error("Bad format of optional clauses", token, type); - free_node(np); - return 0; - - } - type = get_token(fp, token); - } - if (type != EQUALS) { - print_error("Bad format", token, type); - free_node(np); - return 0; - } - length = getoid(fp, oid, 32); - if (length > 1 && length <= 32) { - /* just take the last pair in the oid list */ - if (oid[length - 2].label) - strncpy(np->parent, oid[length - 2].label, MAXLABEL); - strcpy(np->label, name); - if (oid[length - 1].subid != -1) - np->subid = oid[length - 1].subid; - else - print_error("Warning: This entry is pretty silly", np->label, type); - } else { - print_error("No end to oid", (char *) NULL, type); - free_node(np); - np = 0; - } - /* free oid array */ - for (count = 0; count < length; count++) { - if (oid[count].label) - free(oid[count].label); - oid[count].label = 0; - } - return np; -} - - -/* - * Parses an OBJECT GROUP macro. - * Returns 0 on error. - */ -static struct node * -parse_objectgroup(fp, name) - FILE *fp; - char *name; -{ - int type; - char token[MAXTOKEN]; - int count, length; - struct subid oid[32]; - struct node *np; - - np = (struct node *) Malloc(sizeof(struct node)); - np->type = 0; - np->next = 0; - np->enums = 0; - np->description = NULL; /* default to an empty description */ - type = get_token(fp, token); - while (type != EQUALS) { - switch (type) { - case DESCRIPTION: - type = get_token(fp, token); - if (type != QUOTESTRING) { - print_error("Bad DESCRIPTION", token, type); - free_node(np); - return 0; - } -#ifdef TEST - printf("Description== \"%.50s\"\n", quoted_string_buffer); -#endif - np->description = quoted_string_buffer; - quoted_string_buffer = (char *) calloc(1, MAXQUOTESTR); - break; - - default: - /* NOTHING */ - break; - } - type = get_token(fp, token); - } - length = getoid(fp, oid, 32); - if (length > 1 && length <= 32) { - /* just take the last pair in the oid list */ - if (oid[length - 2].label) - strncpy(np->parent, oid[length - 2].label, MAXLABEL); - strcpy(np->label, name); - if (oid[length - 1].subid != -1) - np->subid = oid[length - 1].subid; - else - print_error("Warning: This entry is pretty silly", np->label, type); - } else { - print_error("No end to oid", (char *) NULL, type); - free_node(np); - np = 0; - } - /* free oid array */ - for (count = 0; count < length; count++) { - if (oid[count].label) - free(oid[count].label); - oid[count].label = 0; - } - return np; -} - -/* - * Parses a NOTIFICATION-TYPE macro. - * Returns 0 on error. - */ -static struct node * -parse_notificationDefinition(fp, name) - FILE *fp; - char *name; -{ - int type; - char token[MAXTOKEN]; - int count, length; - struct subid oid[32]; - struct node *np; - - np = (struct node *) Malloc(sizeof(struct node)); - np->type = 0; - np->next = 0; - np->enums = 0; - np->description = NULL; /* default to an empty description */ - type = get_token(fp, token); - while (type != EQUALS) { - switch (type) { - case DESCRIPTION: - type = get_token(fp, token); - if (type != QUOTESTRING) { - print_error("Bad DESCRIPTION", token, type); - free_node(np); - return 0; - } -#ifdef TEST - printf("Description== \"%.50s\"\n", quoted_string_buffer); -#endif - np->description = quoted_string_buffer; - quoted_string_buffer = (char *) calloc(1, MAXQUOTESTR); - break; - - default: - /BÐ+= m -È /* */ B4¨NMPT^h */cfor testing purposes */e key! replace... - */ - * ÿ¯ùsnmplib/snmp_api.cc.hÿ°…<Ðlib/snmp_api.c~~ñÿ±<ðÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±«=ÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²=0ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²Š=Pÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ³ -=pÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³‚ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×Áÿ³ùÿ´=ø%D(ÿ´_=à\BØÿ´©=˜4BØÿ´ø=ÈHBØÿµB>ÿµ]ÿµmÿµzÿµ >(ÿµ·ÿµÉÿµÖÿµï>@ÿ¶ÿ¶ ÿ¶4ÿ¶Pÿ¶rÿ¶~ÿ¶ˆ0ÿ¶Ÿ4¨ÿ¶·ÿ¶Ù‰èÿ·ÿ·#ÿ·/ÿ·>>Xÿ·V3/usr/people/wessels/.indent.proÿ¯èÿ¯ùÿ° ÿ°ÿ°.ÿ°?ÿ°Mÿ°[ÿ°pÿ°…ÿ°•ÿ°£ÿ°²ÿ°Åÿ°Ûÿ°ñÿ± -ÿ±ÿ±2ÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±™ÿ±«ÿ±ºÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²ÿ²ÿ²2ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²ÿ²Šÿ²™ÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ²öÿ³ -ÿ³ ÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³sÿ³‚ÿ³‘ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×ÿ³çÿ³ùÿ´ÿ´ÿ´ÿ´)ÿ´3ÿ´Cÿ´Oÿ´_ÿ´kÿ´tÿ´ÿ´ÿ´Ÿÿ´©ÿ´·ÿ´Åÿ´Òÿ´Ýÿ´íÿ´øÿµÿµÿµÿµ)ÿµ7ÿµBÿµMÿµ]ÿµmÿµzÿµ‰ÿµ ÿµ«ÿµ·ÿµÉÿµÖÿµâÿµïÿ¶ÿ¶ÿ¶ ÿ¶4ÿ¶?ÿ¶Pÿ¶bÿ¶rÿ¶~ÿ¶ˆÿ¶”ÿ¶Ÿÿ¶«ÿ¶·ÿ¶Éÿ¶Ùÿ¶íÿ·ÿ·ÿ·#ÿ·/ÿ·>ÿ·Lÿ·Vÿ·fÿ·q°>X 4¨ $  @,2ˆ…>X‚àC Ž0   ¸ude/snmp_groupvars.h~ àude/snmp_groupvars.h ŽX Ž€ Ž¨ ŽÐ „©/*********************************************************** - Copyright 1989 by Carnegie Mellon University - - All Rights Reserved - -Permission to use, copy, modify, and distribute this software and its -documentation for any purpose and without fee is hereby granted, -provided that the above copyright notice appear in all copies and that -both that copyright notice and this permission notice appear in -supporting documentation, and that the name of CMU not be -used in advertising or publicity pertaining to distribution of the -software without specific, written prior permission. - -CMU DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING -ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL -CMU BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR -ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, -WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, -ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS -SOFTWARE. -******************************************************************/ -/* - * snmp_api.c - API for access to snmp. - */ -#define DEBUG_SNMPTRACE 0 /* set to 1 to print all SNMP actions */ -#define DEBUG_SNMPFULLDUMP 0 /* set to 1 to dump all SNMP packets */ - -#include -#include -#include -#include -#include -#include -#include -#ifdef linux -#include -#include -#include -#include -#endif - - -#include "asn1.h" -#include "snmp.h" -#include "snmp_impl.h" -#include "snmp_api.h" -#include "snmp_client.h" - -#define PACKET_LENGTH 4500 - -#ifndef BSD4_3 -#define BSD4_2 -#endif - -#if !defined(BSD4_3) && !defined(linux) && !defined(sun) - -typedef long fd_mask; -#define NFDBITS (sizeof(fd_mask) * NBBY) /* bits per mask */ - -#define FD_SET(n, p) ((p)->fds_bits[(n)/NFDBITS] |= (1 << ((n) % NFDBITS))) -#define FD_CLR(n, p) ((p)->fds_bits[(n)/NFDBITS] &= ~(1 << ((n) % NFDBITS))) -#define FD_ISSET(n, p) ((p)->fds_bits[(n)/NFDBITS] & (1 << ((n) % NFDBITS))) -#define FD_ZERO(p) bzero((char *)(p), sizeof(*(p))) -#endif - -oid default_enterprise[] = {1, 3, 6, 1, 4, 1, 3, 1, 1}; /* enterprises.cmu.systems.cmuSNMP */ - -#define DEFAULT_COMMUNITY "public" -#define DEFAULT_REMPORT SNMP_PORT -#define DEFAULT_ENTERPRISE default_enterprise -#define DEFAULT_TIME 0 -#define DEFAULT_MMS 1389 /* large, randomly picked for testing purposes */ - -/* - * Internal information about the state of the snmp session. - */ -struct snmp_internal_session { - int sd; /* socket descriptor for this connection */ - ipaddr addr; /* address of connected peer */ - struct request_list *requests;/* Info about outstanding requests */ -}; - -/* - * A list of all the outstanding requests for a particular session. - */ -struct request_list { - struct request_list *next_request; - u_long request_id; /* request id */ - int retries; /* Number of retries */ - u_long timeout; /* length to wait for timeout */ - struct timeval time; /* Time this request was made */ - struct timeval expire; /* time this request is due to expire */ - struct snmp_pdu *pdu; /* The pdu for this request (saved so it can be retransmitted */ -}; - -/* - * The list of active/open sessions. - */ -struct session_list { - struct session_list *next; - struct snmp_session *session; - struct snmp_internal_session *internal; -}; - -struct session_list *Sessions = NULL; - -u_long Reqid = 0; -int snmp_errno = 0; - -char *api_errors[4] = { - "Unknown session", - "Unknown host", - "Invalid local port", - "Unknown Error" -}; - - -void sync_with_agent(); -int parse_app_community_string(); -void snmp_synch_setup(); -int snmp_synch_response(); -void md5Digest(); - - -static char * -api_errstring(snmp_errnumber) - int snmp_errnumber; -{ - if (snmp_errnumber <= SNMPERR_BAD_SESSION && snmp_errnumber >= SNMPERR_GENERR){ - return api_errors[snmp_errnumber + 4]; - } else { - return "Unknown Error"; - } -} - -#if 0 -/* - * Gets initial request ID for all transactions. - */ -static void -init_snmp(){ - struct timeval tv; - - gettimeofday(&tv, (struct timezone *)0); - srandom(tv.tv_sec ^ tv.tv_usec); - Reqid = random(); -} -#endif - - -/* - * Dump snmp packet to stdout: - */ -static void -snmp_print_packet(packet, length, addr, code) - char *packet; - int length; - ipaddr addr; - int code; -{ - if(length < 0) { - return; - } - if (code <= 0) { /* received */ - printf("\nReceived %4d bytes from ", length); - } - else { /* sending */ - printf("\nSending %4d bytes to ", length); - } - printf("%s:", inet_ntoa(addr.sin_addr)); -#if DEBUG_SNMPFULLDUMP - for (count = 0; count < length; count++) { - if ((count & 15) == 0) { - printf("\n "); - } - printf("%02X ", (int)(packet[count]&255)); - } -#endif - fflush(stdout); -} - -#if DEBUG_SNMPTRACE -/* - * Print request - */ -#define TRACE_SEND (0) -#define TRACE_RECV (1) -#define TRACE_TIMEOUT (2) -static void -snmp_print_trace(slp, rp, code) - struct session_list *slp; - struct request_list *rp; - int code; -{ - int reqid=0, retries=1; - if( rp ){ - reqid = rp->request_id; - retries = rp->retries; - } - printf("\n Session %2d ReqId %4d ", slp->internal->sd, reqid); - switch(code) - { - case TRACE_SEND: printf("send pdu (%d)", retries);break; - case TRACE_RECV: printf("recv pdu");break; - case TRACE_TIMEOUT: printf("time out");break; - } - fflush(stdout); -} -#endif /* DEBUG_SNMPTRACE */ - - - - -/* - * Sets up the session with the snmp_session information provided - * by the user. Then opens and binds the necessary UDP port. - * A handle to the created session is returned (this is different than - * the pointer passed to snmp_open()). On any error, NULL is returned - * and snmp_errno is set to the appropriate error code. - */ -struct snmp_session * -snmp_open(session) - struct snmp_session *session; -{ - struct session_list *slp; - struct snmp_internal_session *isp; - u_char *cp; - int sd; - u_long addr; - struct sockaddr_in me; - struct hostent *hp; - struct servent *servp; - extern int check_received_pkt(); - - /* Copy session structure and link into list */ - slp = (struct session_list *)calloc(1, sizeof(struct session_list)); - slp->internal = isp = (struct snmp_internal_session *)calloc(1, sizeof(struct snmp_internal_session)); - bzero((char *)isp, sizeof(struct snmp_internal_session)); - slp->internal->sd = -1; /* mark it not set */ - slp->session = (struct snmp_session *)calloc(1, sizeof(struct snmp_session)); - bcopy((char *)session, (char *)slp->session, sizeof(struct snmp_session)); - session = slp->session; - /* now link it in. */ - slp->next = Sessions; - Sessions = slp; - - /* - * session now points to the new structure that still contains pointers to - * data allocated elsewhere. Some of this data is copied to space malloc'd - * here, and the pointer replaced with the new one. - */ - - if (session->peername != NULL){ - cp = (u_char *)calloc(1, (unsigned)strlen(session->peername) + 1); - strcpy((char *)cp, session->peername); - session->peername = (char *)cp; - } - - if (session->retries == SNMP_DEFAULT_RETRIES) - session->retries = SNMP_API_DEFAULT_RETRIES; - if (session->timeout == SNMP_DEFAULT_TIMEOUT) - session->timeout = SNMP_API_DEFAULT_TIMEOUT; - if (session->MMS == 0 ) - session->MMS = DEFAULT_MMS; - isp->requests = NULL; - - - /* Fill in defaults if necessary */ - if (session->community_len != SNMP_DEFAULT_COMMUNITY_LEN){ - if( *session->community == '+' ) { - session->community_len--; - cp = (u_char *) calloc(1, (unsigned) session->community_len); - bcopy((char *) session->community+1, (char *)cp, - session->community_len); - session->version = SNMP_VERSION_2C; - } else { - cp = (u_char *) calloc(1, (unsigned) session->community_len); - bcopy((char *) session->community, (char *) cp, - session->community_len); - } - - } else { - session->community_len = strlen(DEFAULT_COMMUNITY); - cp = (u_char *)calloc(1, (unsigned)session->community_len); - bcopy((char *)DEFAULT_COMMUNITY, (char *)cp, session->community_len); - } - - /* Set up connections */ - sd = socket(AF_INET, SOCK_DGRAM, 0); - if (sd < 0){ - perror("socket"); - snmp_errno = SNMPERR_GENERR; - if (!snmp_close(session)){ - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", api_errstring(snmp_errno)); - exit(1); - } - return 0; - } - isp->sd = sd; - - if (session->peername != SNMP_DEFAULT_PEERNAME){ - if ((addr = inet_addr(session->peername)) != -1){ - bcopy((char *)&addr, (char *)&isp->addr.sin_addr, sizeof(isp->addr.sin_addr)); - } else { - hp = gethostbyname(session->peername); - if (hp == NULL){ - fprintf(stderr, "unknown host: %s\n", session->peername); - snmp_errno = SNMPERR_BAD_ADDRESS; - if (!snmp_close(session)){ - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", api_errstring(snmp_errno)); - exit(2); - } - return 0; - } else { - bcopy((char *)hp->h_addr, (char *)&isp->addr.sin_addr, hp->h_length); - } - } - isp->addr.sin_family = AF_INET; - if (session->remote_port == SNMP_DEFAULT_REMPORT){ - /*servp = getservbyname("snmp", "udp");*/ - servp=NULL; - if (servp != NULL){ - isp->addr.sin_port = servp->s_port; - } else { - isp->addr.sin_port = htons(SNMP_PORT); - } - } else { - isp->addr.sin_port = htons(session->remote_port); - } - } else { - isp->addr.sin_addr.s_addr = SNMP_DEFAULT_ADDRESS; - } - - me.sin_family = AF_INET; - me.sin_addr.s_addr = INADDR_ANY; - me.sin_port = htons(session->local_port); - if (bind(sd, (struct sockaddr *)&me, sizeof(me)) != 0){ - perror("bind"); - snmp_errno = SNMPERR_BAD_LOCPORT; - if (! snmp_close(session)){ - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", - api_errstring(snmp_errno)); - exit(3); - } - return 0; - } - - if( *cp == '/' ) { - session->authenticator = check_received_pkt; - sync_with_agent(session); - parse_app_community_string( session ); - session->qoS |= USEC_QOS_GENREPORT; - } - - /* replace comm pointer with pointer to new data: */ - session->community = cp; - - return session; -} - -void -sync_with_agent( session ) -struct snmp_session *session; -{ - struct snmp_pdu *pdu, *response = 0; - int status; - - session->qoS = USEC_QOS_GENREPORT; - session->userLen = 6; - session->version = SNMP_VERSION_2; - strcpy( session->userName, "public" ); - - snmp_synch_setup(session); - pdu = snmp_pdu_create(GET_REQ_MSG); - status = snmp_synch_response(session, pdu, &response); - - if (status == STAT_SUCCESS){ - memcpy( session->agentID, response->params.agentID, 12 ); - - /* save the clocks -- even though they are not authentic */ - session->agentBoots = response->params.agentBoots; - session->agentTime = response->params.agentTime; - session->agentClock = response->params.agentTime - time(NULL); - - } else { - if (status == STAT_TIMEOUT){ - printf("No Response from %s\n", session->peername); - } else { /* status == STAT_ERROR */ - printf("An error occurred, Quitting\n"); - } - exit( -1 ); - } - - /** freed to early: - snmp_free_pdu(pdu); - if (response) snmp_free_pdu(response); - **/ -} -#if 1 /***/ -/* - * Unlink one element from input request list, - * then free it and it's pdu. - */ -static void -free_one_request(isp, orp) - struct snmp_internal_session *isp; - struct request_list *orp; -{ - struct request_list *rp; - if (!orp) - return; - if (isp->requests == orp) { - isp->requests = orp->next_request; /* unlink head */ - } else { - for (rp = isp->requests; rp; rp = rp->next_request) { - if (rp->next_request == orp) { - rp->next_request = orp->next_request; /* unlink element */ - break; - } - } - } - if (orp->pdu != NULL) { - snmp_free_pdu(orp->pdu); - } - free((char *) orp); -} - -#endif/***/ BUG_SNMPTRACE */cked for testing purposes */e key! replace... - */ - * ÿ¯ùsnmplib/snmp_api.cc.hÿ°…<Ðlib/snmp_api.c~~ñÿ±<ðÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±«=ÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²=0ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²Š=Pÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ³ -=pÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³‚ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×Áÿ³ùÿ´=ø%D(ÿ´_=à\BØÿ´©=˜4BØÿ´ø=ÈHBØÿµB>ÿµ]ÿµmÿµzÿµ >(ÿµ·ÿµÉÿµÖÿµï>@ÿ¶ÿ¶ ÿ¶4ÿ¶Pÿ¶rÿ¶~ÿ¶ˆ0ÿ¶Ÿ4¨ÿ¶·ÿ¶Ùÿ·ÿ·#ÿ·/ÿ·>>Xÿ·V3/usr/people/wessels/.indent.proÿ¯èÿ¯ùÿ° ÿ°ÿ°.ÿ°?ÿ°Mÿ°[ÿ°pÿ°…ÿ°•ÿ°£ÿ°²ÿ°Åÿ°Ûÿ°ñÿ± -ÿ±ÿ±2ÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±™ÿ±«ÿ±ºÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²ÿ²ÿ²2ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²ÿ²Šÿ²™ÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ²öÿ³ -ÿ³ ÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³sÿ³‚ÿ³‘ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×ÿ³çÿ³ùÿ´ÿ´ÿ´ÿ´)ÿ´3ÿ´Cÿ´Oÿ´_ÿ´kÿ´tÿ´ÿ´ÿ´Ÿÿ´©ÿ´·ÿ´Åÿ´Òÿ´Ýÿ´íÿ´øÿµÿµÿµÿµ)ÿµ7ÿµBÿµMÿµ]ÿµmÿµzÿµ‰ÿµ ÿµ«ÿµ·ÿµÉÿµÖÿµâÿµïÿ¶ÿ¶ÿ¶ ÿ¶4ÿ¶?ÿ¶Pÿ¶bÿ¶rÿ¶~ÿ¶ˆÿ¶”ÿ¶Ÿÿ¶«ÿ¶·ÿ¶Éÿ¶Ùÿ¶íÿ·ÿ·ÿ·#ÿ·/ÿ·>ÿ·Lÿ·Vÿ·fÿ·q@ °>X 4¨ $  @,2ˆ…>X‚àC Ž0   ¸ude/snmp_groupvars.h~ àude/snmp_groupvars.h ŽX Ž€ Ž¨ ŽÐ „©/*********************************************************** - Copyright 1989 by Carnegie Mellon University - - All Rights Reserved - -Permission to use, copy, modify, and distribute this software and its -documentation for any purpose and without fee is hereby granted, -provided that the above copyright notice appear in all copies and that -both that copyright notice and this permission notice appear in -supporting documentation, and that the name of CMU not be -used in advertising or publicity pertaining to distribution of the -software without specific, written prior permission. - -CMU DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING -ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL -CMU BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR -ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, -WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, -ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS -SOFTWARE. -******************************************************************/ -/* - * snmp_api.c - API for access to snmp. - */ -#define DEBUG_SNMPTRACE 0 /* set to 1 to print all SNMP actions */ -#define DEBUG_SNMPFULLDUMP 0 /* set to 1 to dump all SNMP packets */ - -#include -#include -#include -#include -#include -#include -#include -#ifdef linux -#include -#include -#include -#include -#endif - - -#include "asn1.h" -#include "snmp.h" -#include "snmp_impl.h" -#include "snmp_api.h" -#include "snmp_client.h" - -#define PACKET_LENGTH 4500 - -#ifndef BSD4_3 -#define BSD4_2 -#endif - -#if !defined(BSD4_3) && !defined(linux) && !defined(sun) - -typedef long fd_mask; -#define NFDBITS (sizeof(fd_mask) * NBBY) /* bits per mask */ - -#define FD_SET(n, p) ((p)->fds_bits[(n)/NFDBITS] |= (1 << ((n) % NFDBITS))) -#define FD_CLR(n, p) ((p)->fds_bits[(n)/NFDBITS] &= ~(1 << ((n) % NFDBITS))) -#define FD_ISSET(n, p) ((p)->fds_bits[(n)/NFDBITS] & (1 << ((n) % NFDBITS))) -#define FD_ZERO(p) bzero((char *)(p), sizeof(*(p))) -#endif - -oid default_enterprise[] = {1, 3, 6, 1, 4, 1, 3, 1, 1}; /* enterprises.cmu.systems.cmuSNMP */ - -#define DEFAULT_COMMUNITY "public" -#define DEFAULT_REMPORT SNMP_PORT -#define DEFAULT_ENTERPRISE default_enterprise -#define DEFAULT_TIME 0 -#define DEFAULT_MMS 1389 /* large, randomly picked for testing purposes */ - -/* - * Internal information about the state of the snmp session. - */ -struct snmp_internal_session { - int sd; /* socket descriptor for this connection */ - ipaddr addr; /* address of connected peer */ - struct request_list *requests;/* Info about outstanding requests */ -}; - -/* - * A list of all the outstanding requests for a particular session. - */ -struct request_list { - struct request_list *next_request; - u_long request_id; /* request id */ - int retries; /* Number of retries */ - u_long timeout; /* length to wait for timeout */ - struct timeval time; /* Time this request was made */ - struct timeval expire; /* time this request is due to expire */ - struct snmp_pdu *pdu; /* The pdu for this request (saved so it can be retransmitted */ -}; - -/* - * The list of active/open sessions. - */ -struct session_list { - struct session_list *next; - struct snmp_session *session; - struct snmp_internal_session *internal; -}; - -struct session_list *Sessions = NULL; - -u_long Reqid = 0; -int snmp_errno = 0; - -char *api_errors[4] = { - "Unknown session", - "Unknown host", - "Invalid local port", - "Unknown Error" -}; - - -void sync_with_agent(); -int parse_app_community_string(); -void snmp_synch_setup(); -int snmp_synch_response(); -void md5Digest(); - - -static char * -api_errstring(snmp_errnumber) - int snmp_errnumber; -{ - if (snmp_errnumber <= SNMPERR_BAD_SESSION && snmp_errnumber >= SNMPERR_GENERR){ - return api_errors[snmp_errnumber + 4]; - } else { - return "Unknown Error"; - } -} - -#if 0 -/* - * Gets initial request ID for all transactions. - */ -static void -init_snmp(){ - struct timeval tv; - - gettimeofday(&tv, (struct timezone *)0); - srandom(tv.tv_sec ^ tv.tv_usec); - Reqid = random(); -} -#endif - - -/* - * Dump snmp packet to stdout: - */ -static void -snmp_print_packet(packet, length, addr, code) - char *packet; - int length; - ipaddr addr; - int code; -{ - if(length < 0) { - return; - } - if (code <= 0) { /* received */ - printf("\nReceived %4d bytes from ", length); - } - else { /* sending */ - printf("\nSending %4d bytes to ", length); - } - printf("%s:", inet_ntoa(addr.sin_addr)); -#if DEBUG_SNMPFULLDUMP - for (count = 0; count < length; count++) { - if ((count & 15) == 0) { - printf("\n "); - } - printf("%02X ", (int)(packet[count]&255)); - } -#endif - fflush(stdout); -} - -#if DEBUG_SNMPTRACE -/* - * Print request - */ -#define TRACE_SEND (0) -#define TRACE_RECV (1) -#define TRACE_TIMEOUT (2) -static void -snmp_print_trace(slp, rp, code) - struct session_list *slp; - struct request_list *rp; - int code; -{ - int reqid=0, retries=1; - if( rp ){ - reqid = rp->request_id; - retries = rp->retries; - } - printf("\n Session %2d ReqId %4d ", slp->internal->sd, reqid); - switch(code) - { - case TRACE_SEND: printf("send pdu (%d)", retries);break; - case TRACE_RECV: printf("recv pdu");break; - case TRACE_TIMEOUT: printf("time out");break; - } - fflush(stdout); -} -#endif /* DEBUG_SNMPTRACE */ - - - - -/* - * Sets up the session with the snmp_session information provided - * by the user. Then opens and binds the necessary UDP port. - * A handle to the created session is returned (this is different than - * the pointer passed to snmp_open()). On any error, NULL is returned - * and snmp_errno is set to the appropriate error code. - */ -struct snmp_session * -snmp_open(session) - struct snmp_session *session; -{ - struct session_list *slp; - struct snmp_internal_session *isp; - u_char *cp; - int sd; - u_long addr; - struct sockaddr_in me; - struct hostent *hp; - struct servent *servp; - extern int check_received_pkt(); - - /* Copy session structure and link into list */ - slp = (struct session_list *)calloc(1, sizeof(struct session_list)); - slp->internal = isp = (struct snmp_internal_session *)calloc(1, sizeof(struct snmp_internal_session)); - bzero((char *)isp, sizeof(struct snmp_internal_session)); - slp->internal->sd = -1; /* mark it not set */ - slp->session = (struct snmp_session *)calloc(1, sizeof(struct snmp_session)); - bcopy((char *)session, (char *)slp->session, sizeof(struct snmp_session)); - session = slp->session; - /* now link it in. */ - slp->next = Sessions; - Sessions = slp; - - /* - * session now points to the new structure that still contains pointers to - * data allocated elsewhere. Some of this data is copied to space malloc'd - * here, and the pointer replaced with the new one. - */ - - if (session->peername != NULL){ - cp = (u_char *)calloc(1, (unsigned)strlen(session->peername) + 1); - strcpy((char *)cp, session->peername); - session->peername = (char *)cp; - } - - if (session->retries == SNMP_DEFAULT_RETRIES) - session->retries = SNMP_API_DEFAULT_RETRIES; - if (session->timeout == SNMP_DEFAULT_TIMEOUT) - session->timeout = SNMP_API_DEFAULT_TIMEOUT; - if (session->MMS == 0 ) - session->MMS = DEFAULT_MMS; - isp->requests = NULL; - - - /* Fill in defaults if necessary */ - if (session->community_len != SNMP_DEFAULT_COMMUNITY_LEN){ - if( *session->community == '+' ) { - session->community_len--; - cp = (u_char *) calloc(1, (unsigned) session->community_len); - bcopy((char *) session->community+1, (char *)cp, - session->community_len); - session->version = SNMP_VERSION_2C; - } else { - cp = (u_char *) calloc(1, (unsigned) session->community_len); - bcopy((char *) session->community, (char *) cp, - session->community_len); - } - - } else { - session->community_len = strlen(DEFAULT_COMMUNITY); - cp = (u_char *)calloc(1, (unsigned)session->community_len); - bcopy((char *)DEFAULT_COMMUNITY, (char *)cp, session->community_len); - } - - /* Set up connections */ - sd = socket(AF_INET, SOCK_DGRAM, 0); - if (sd < 0){ - perror("socket"); - snmp_errno = SNMPERR_GENERR; - if (!snmp_close(session)){ - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", api_errstring(snmp_errno)); - exit(1); - } - return 0; - } - isp->sd = sd; - - if (session->peername != SNMP_DEFAULT_PEERNAME){ - if ((addr = inet_addr(session->peername)) != -1){ - bcopy((char *)&addr, (char *)&isp->addr.sin_addr, sizeof(isp->addr.sin_addr)); - } else { - hp = gethostbyname(session->peername); - if (hp == NULL){ - fprintf(stderr, "unknown host: %s\n", session->peername); - snmp_errno = SNMPERR_BAD_ADDRESS; - if (!snmp_close(session)){ - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", api_errstring(snmp_errno)); - exit(2); - } - return 0; - } else { - bcopy((char *)hp->h_addr, (char *)&isp->addr.sin_addr, hp->h_length); - } - } - isp->addr.sin_family = AF_INET; - if (session->remote_port == SNMP_DEFAULT_REMPORT){ - /*servp = getservbyname("snmp", "udp");*/ - servp=NULL; - if (servp != NULL){ - isp->addr.sin_port = servp->s_port; - } else { - isp->addr.sin_port = htons(SNMP_PORT); - } - } else { - isp->addr.sin_port = htons(session->remote_port); - } - } else { - isp->addr.sin_addr.s_addr = SNMP_DEFAULT_ADDRESS; - } - - me.sin_family = AF_INET; - me.sin_addr.s_addr = INADDR_ANY; - me.sin_port = htons(session->local_port); - if (bind(sd, (struct sockaddr *)&me, sizeof(me)) != 0){ - perror("bind"); - snmp_errno = SNMPERR_BAD_LOCPORT; - if (! snmp_close(session)){ - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", - api_errstring(snmp_errno)); - exit(3); - } - return 0; - } - - if( *cp == '/' ) { - session->authenticator = check_received_pkt; - sync_with_agent(session); - parse_app_community_string( session ); - session->qoS |= USEC_QOS_GENREPORT; - } - - /* replace comm pointer with pointer to new data: */ - session->community = cp; - - return session; -} - -void -sync_with_agent( session ) -struct snmp_session *session; -{ - struct snmp_pdu *pdu, *response = 0; - int status; - - session->qoS = USEC_QOS_GENREPORT; - session->userLen = 6; - session->version = SNMP_VERSION_2; - strcpy( session->userName, "public" ); - - snmp_synch_setup(session); - pdu = snmp_pdu_create(GET_REQ_MSG); - status = snmp_synch_response(session, pdu, &response); - - if (status == STAT_SUCCESS){ - memcpy( session->agentID, response->params.agentID, 12 ); - - /* save the clocks -- even though they are not authentic */ - session->agentBoots = response->params.agentBoots; - session->agentTime = response->params.agentTime; - session->agentClock = response->params.agentTime - time(NULL); - - } else { - if (status == STAT_TIMEOUT){ - printf("No Response from %s\n", session->peername); - } else { /* status == STAT_ERROR */ - printf("An error occurred, Quitting\n"); - } - exit( -1 ); - } - - /** freed to early: - snmp_free_pdu(pdu); - if (response) snmp_free_pdu(response); - **/ -} -#if 1 /***/ -/* - * Unlink one element from input request list, - * then free it and it's pdu. - */ -static void -free_one_request(isp, orp) - struct snmp_internal_session *isp; - struct request_list *orp; -{ - struct request_list *rp; - if (!orp) - return; - if (isp->requests == orp) { - isp->requests = orp->next_request; /* unlink head */ - } else { - for (rp = isp->requests; rp; rp = rp->next_request) { - if (rp->next_request == orp) { - rp->next_request = orp->next_request; /* unlink element */ - break; - } - } - } - if (orp->pdu != NULL) { - snmp_free_pdu(orp->pdu); - } - free((char *) orp); -} - oid list */ - if (oid[length - 2].label) - strncpy(np->parent, oid[length - 2].label, MAXLABEL); - strcpy(np->label, name); - if (oid[length - 1].subid != -1) - np->subid = oid[length - 1].subid; - else - print_error("Warning: This entry is pretty silly", np->label, type); - } else { - print_error("No end to oid", (char *) NULL, type); - free_node(np); - np = 0; - } - /* free oid array */ - for (count = 0; count < length; count++) { - if (oid[count].label) - free(oid[count].label); - oid[count].label = 0; - } - return np; -} - -/* - * Parses a NOTIFICATION-TYPE macro. - * Returns 0 on error. - */ -static struct node * -parse_notificationDefinition(fp, name) - FILE *fp; - char *name; -{ - int type; - char token[MAXTOKEN]; - int count, length; - struct subid oid[32]; - struct node *np; - - np = (struct node *) Malloc(sizeof(struct node)); - np->type = 0; - np->next = 0; - np->enums = 0; - np->description = NULL; /* default to an empty description */ - type = get_token(fp, token); - while (type != EQUALS) { - switch (type) { - case DESCRIPTION: - type = get_token(fp, token); - if (type != QUOTESTRING) { - print_error("Bad DESCRIPTION", token, type); - free_node(np); - return 0; - } -#ifdef TEST - printf("Description== \"%.50s\"\n", quoted_string_buffer); -#endif - np->description = quoted_string_buffer; - quoted_string_buffer = (char *) calloc(1, MAXQUOTESTR); - break; - - default: - /BÐ+= m -È /* */ B4¨NMPT^h */cfor testing purposes */e key! replace... - */ - * ÿ¯ùsnmplib/snmp_api.cc.hÿ°…<Ðlib/snmp_api.c~~ñÿ±<ðÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±«=ÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²=0ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²Š=Pÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ³ -=pÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³‚ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×Áÿ³ùÿ´=ø%D(ÿ´_=à\BØÿ´©=˜4BØÿ´ø=ÈHBØÿµB>ÿµ]ÿµmÿµzÿµ >(ÿµ·ÿµÉÿµÖÿµï>@ÿ¶ÿ¶ ÿ¶4ÿ¶Pÿ¶rÿ¶~ÿ¶ˆ0ÿ¶Ÿ4¨ÿ¶·ÿ¶Ù‰èÿ·ÿ·#ÿ·/ÿ·>>Xÿ·V3/usr/people/wessels/.indent.proÿ¯èÿ¯ùÿ° ÿ°ÿ°.ÿ°?ÿ°Mÿ°[ÿ°pÿ°…ÿ°•ÿ°£ÿ°²ÿ°Åÿ°Ûÿ°ñÿ± -ÿ±ÿ±2ÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±™ÿ±«ÿ±ºÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²ÿ²ÿ²2ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²ÿ²Šÿ²™ÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ²öÿ³ -ÿ³ ÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³sÿ³‚ÿ³‘ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×ÿ³çÿ³ùÿ´ÿ´ÿ´ÿ´)ÿ´3ÿ´Cÿ´Oÿ´_ÿ´kÿ´tÿ´ÿ´ÿ´Ÿÿ´©ÿ´·ÿ´Åÿ´Òÿ´Ýÿ´íÿ´øÿµÿµÿµÿµ)ÿµ7ÿµBÿµMÿµ]ÿµmÿµzÿµ‰ÿµ ÿµ«ÿµ·ÿµÉÿµÖÿµâÿµïÿ¶ÿ¶ÿ¶ ÿ¶4ÿ¶?ÿ¶Pÿ¶bÿ¶rÿ¶~ÿ¶ˆÿ¶”ÿ¶Ÿÿ¶«ÿ¶·ÿ¶Éÿ¶Ùÿ¶íÿ·ÿ·ÿ·#ÿ·/ÿ·>ÿ·Lÿ·Vÿ·fÿ·qBÐ+= m -È /* */ B4¨NMPT—X */cfor testing purposes */e key! replace... - */ - * ÿ¯ùsnmplib/snmp_api.cc.hÿ°…<Ðlib/snmp_api.c~~ñÿ±<ðÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±«=ÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²=0ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²Š=Pÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ³ -=pÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³‚ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×Áÿ³ùÿ´=ø%D(ÿ´_=à\BØÿ´©=˜4BØÿ´ø=ÈHBØÿµB>ÿµ]ÿµmÿµzÿµ >(ÿµ·ÿµÉÿµÖÿµï>@ÿ¶ÿ¶ ÿ¶4ÿ¶Pÿ¶rÿ¶~ÿ¶ˆ0ÿ¶Ÿ4¨ÿ¶·ÿ¶Ù‰èÿ·ÿ·#ÿ·/ÿ·>>Xÿ·V3/usr/people/wessels/.indent.proÿ¯èÿ¯ùÿ° ÿ°ÿ°.ÿ°?ÿ°Mÿ°[ÿ°pÿ°…ÿ°•ÿ°£ÿ°²ÿ°Åÿ°Ûÿ°ñÿ± -ÿ±ÿ±2ÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±™ÿ±«ÿ±ºÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²ÿ²ÿ²2ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²ÿ²Šÿ²™ÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ²öÿ³ -ÿ³ ÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³sÿ³‚ÿ³‘ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×ÿ³çÿ³ùÿ´ÿ´ÿ´ÿ´)ÿ´3ÿ´Cÿ´Oÿ´_ÿ´kÿ´tÿ´ÿ´ÿ´Ÿÿ´©ÿ´·ÿ´Åÿ´Òÿ´Ýÿ´íÿ´øÿµÿµÿµÿµ)ÿµ7ÿµBÿµMÿµ]ÿµmÿµzÿµ‰ÿµ ÿµ«ÿµ·ÿµÉÿµÖÿµâÿµïÿ¶ÿ¶ÿ¶ ÿ¶4ÿ¶?ÿ¶Pÿ¶bÿ¶rÿ¶~ÿ¶ˆÿ¶”ÿ¶Ÿÿ¶«ÿ¶·ÿ¶Éÿ¶Ùÿ¶íÿ·ÿ·ÿ·#ÿ·/ÿ·>ÿ·Lÿ·Vÿ·fÿ·q°>X 4¨ $  @,2ˆ…>X‚àC Ž0   ¸ude/snmp_groupvars.h~ àude/snmp_groupvars.h ŽX Ž€ Ž¨ ŽÐ „©/*********************************************************** - Copyright 1989 by Carnegie Mellon University - - All Rights Reserved - -Permission to use, copy, modify, and distribute this software and its -documentation for any purpose and without fee is hereby granted, -provided that the above copyright notice appear in all copies and that -both that copyright notice and this permission notice appear in -supporting documentation, and that the name of CMU not be -used in advertising or publicity pertaining to distribution of the -software without specific, written prior permission. - -CMU DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING -ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL -CMU BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR -ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, -WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, -ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS -SOFTWARE. -******************************************************************/ -/* - * snmp_api.c - API for access to snmp. - */ -#define DEBUG_SNMPTRACE 0 /* set to 1 to print all SNMP actions */ -#define DEBUG_SNMPFULLDUMP 0 /* set to 1 to dump all SNMP packets */ - -#include -#include -#include -#include -#include -#include -#include -#ifdef linux -#include -#include -#include -#include -#endif - - -#include "asn1.h" -#include "snmp.h" -#include "snmp_impl.h" -#include "snmp_api.h" -#include "snmp_client.h" - -#define PACKET_LENGTH 4500 - -#ifndef BSD4_3 -#define BSD4_2 -#endif - -#if !defined(BSD4_3) && !defined(linux) && !defined(sun) - -typedef long fd_mask; -#define NFDBITS (sizeof(fd_mask) * NBBY) /* bits per mask */ - -#define FD_SET(n, p) ((p)->fds_bits[(n)/NFDBITS] |= (1 << ((n) % NFDBITS))) -#define FD_CLR(n, p) ((p)->fds_bits[(n)/NFDBITS] &= ~(1 << ((n) % NFDBITS))) -#define FD_ISSET(n, p) ((p)->fds_bits[(n)/NFDBITS] & (1 << ((n) % NFDBITS))) -#define FD_ZERO(p) bzero((char *)(p), sizeof(*(p))) -#endif - -oid default_enterprise[] = {1, 3, 6, 1, 4, 1, 3, 1, 1}; /* enterprises.cmu.systems.cmuSNMP */ - -#define DEFAULT_COMMUNITY "public" -#define DEFAULT_REMPORT SNMP_PORT -#define DEFAULT_ENTERPRISE default_enterprise -#define DEFAULT_TIME 0 -#define DEFAULT_MMS 1389 /* large, randomly picked for testing purposes */ - -/* - * Internal information about the state of the snmp session. - */ -struct snmp_internal_session { - int sd; /* socket descriptor for this connection */ - ipaddr addr; /* address of connected peer */ - struct request_list *requests;/* Info about outstanding requests */ -}; - -/* - * A list of all the outstanding requests for a particular session. - */ -struct request_list { - struct request_list *next_request; - u_long request_id; /* request id */ - int retries; /* Number of retries */ - u_long timeout; /* length to wait for timeout */ - struct timeval time; /* Time this request was made */ - struct timeval expire; /* time this request is due to expire */ - struct snmp_pdu *pdu; /* The pdu for this request (saved so it can be retransmitted */ -}; - -/* - * The list of active/open sessions. - */ -struct session_list { - struct session_list *next; - struct snmp_session *session; - struct snmp_internal_session *internal; -}; - -struct session_list *Sessions = NULL; - -u_long Reqid = 0; -int snmp_errno = 0; - -char *api_errors[4] = { - "Unknown session", - "Unknown host", - "Invalid local port", - "Unknown Error" -}; - - -void sync_with_agent(); -int parse_app_community_string(); -void snmp_synch_setup(); -int snmp_synch_response(); -void md5Digest(); - - -static char * -api_errstring(snmp_errnumber) - int snmp_errnumber; -{ - if (snmp_errnumber <= SNMPERR_BAD_SESSION && snmp_errnumber >= SNMPERR_GENERR){ - return api_errors[snmp_errnumber + 4]; - } else { - return "Unknown Error"; - } -} - -#if 0 -/* - * Gets initial request ID for all transactions. - */ -static void -init_snmp(){ - struct timeval tv; - - gettimeofday(&tv, (struct timezone *)0); - srandom(tv.tv_sec ^ tv.tv_usec); - Reqid = random(); -} -#endif - - -/* - * Dump snmp packet to stdout: - */ -static void -snmp_print_packet(packet, length, addr, code) - char *packet; - int length; - ipaddr addr; - int code; -{ - if(length < 0) { - return; - } - if (code <= 0) { /* received */ - printf("\nReceived %4d bytes from ", length); - } - else { /* sending */ - printf("\nSending %4d bytes to ", length); - } - printf("%s:", inet_ntoa(addr.sin_addr)); -#if DEBUG_SNMPFULLDUMP - for (count = 0; count < length; count++) { - if ((count & 15) == 0) { - printf("\n "); - } - printf("%02X ", (int)(packet[count]&255)); - } -#endif - fflush(stdout); -} - -#if DEBUG_SNMPTRACE -/* - * Print request - */ -#define TRACE_SEND (0) -#define TRACE_RECV (1) -#define TRACE_TIMEOUT (2) -static void -snmp_print_trace(slp, rp, code) - struct session_list *slp; - struct request_list *rp; - int code; -{ - int reqid=0, retries=1; - if( rp ){ - reqid = rp->request_id; - retries = rp->retries; - } - printf("\n Session %2d ReqId %4d ", slp->internal->sd, reqid); - switch(code) - { - case TRACE_SEND: printf("send pdu (%d)", retries);break; - case TRACE_RECV: printf("recv pdu");break; - case TRACE_TIMEOUT: printf("time out");break; - } - fflush(stdout); -} -#endif /* DEBUG_SNMPTRACE */ - - - - -/* - * Sets up the session with the snmp_session information provided - * by the user. Then opens and binds the necessary UDP port. - * A handle to the created session is returned (this is different than - * the pointer passed to snmp_open()). On any error, NULL is returned - * and snmp_errno is set to the appropriate error code. - */ -struct snmp_session * -snmp_open(session) - struct snmp_session *session; -{ - struct session_list *slp; - struct snmp_internal_session *isp; - u_char *cp; - int sd; - u_long addr; - struct sockaddr_in me; - struct hostent *hp; - struct servent *servp; - extern int check_received_pkt(); - - /* Copy session structure and link into list */ - slp = (struct session_list *)calloc(1, sizeof(struct session_list)); - slp->internal = isp = (struct snmp_internal_session *)calloc(1, sizeof(struct snmp_internal_session)); - bzero((char *)isp, sizeof(struct snmp_internal_session)); - slp->internal->sd = -1; /* mark it not set */ - slp->session = (struct snmp_session *)calloc(1, sizeof(struct snmp_session)); - bcopy((char *)session, (char *)slp->session, sizeof(struct snmp_session)); - session = slp->session; - /* now link it in. */ - slp->next = Sessions; - Sessions = slp; - - /* - * session now points to the new structure that still contains pointers to - * data allocated elsewhere. Some of this data is copied to space malloc'd - * here, and the pointer replaced with the new one. - */ - - if (session->peername != NULL){ - cp = (u_char *)calloc(1, (unsigned)strlen(session->peername) + 1); - strcpy((char *)cp, session->peername); - session->peername = (char *)cp; - } - - if (session->retries == SNMP_DEFAULT_RETRIES) - session->retries = SNMP_API_DEFAULT_RETRIES; - if (session->timeout == SNMP_DEFAULT_TIMEOUT) - session->timeout = SNMP_API_DEFAULT_TIMEOUT; - if (session->MMS == 0 ) - session->MMS = DEFAULT_MMS; - isp->requests = NULL; - - - /* Fill in defaults if necessary */ - if (session->community_len != SNMP_DEFAULT_COMMUNITY_LEN){ - if( *session->community == '+' ) { - session->community_len--; - cp = (u_char *) calloc(1, (unsigned) session->community_len); - bcopy((char *) session->community+1, (char *)cp, - session->community_len); - session->version = SNMP_VERSION_2C; - } else { - cp = (u_char *) calloc(1, (unsigned) session->community_len); - bcopy((char *) session->community, (char *) cp, - session->community_len); - } - - } else { - session->community_len = strlen(DEFAULT_COMMUNITY); - cp = (u_char *)calloc(1, (unsigned)session->community_len); - bcopy((char *)DEFAULT_COMMUNITY, (char *)cp, session->community_len); - } - - /* Set up connections */ - sd = socket(AF_INET, SOCK_DGRAM, 0); - if (sd < 0){ - perror("socket"); - snmp_errno = SNMPERR_GENERR; - if (!snmp_close(session)){ - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", api_errstring(snmp_errno)); - exit(1); - } - return 0; - } - isp->sd = sd; - - if (session->peername != SNMP_DEFAULT_PEERNAME){ - if ((addr = inet_addr(session->peername)) != -1){ - bcopy((char *)&addr, (char *)&isp->addr.sin_addr, sizeof(isp->addr.sin_addr)); - } else { - hp = gethostbyname(session->peername); - if (hp == NULL){ - fprintf(stderr, "unknown host: %s\n", session->peername); - snmp_errno = SNMPERR_BAD_ADDRESS; - if (!snmp_close(session)){ - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", api_errstring(snmp_errno)); - exit(2); - } - return 0; - } else { - bcopy((char *)hp->h_addr, (char *)&isp->addr.sin_addr, hp->h_length); - } - } - isp->addr.sin_family = AF_INET; - if (session->remote_port == SNMP_DEFAULT_REMPORT){ - /*servp = getservbyname("snmp", "udp");*/ - servp=NULL; - if (servp != NULL){ - isp->addr.sin_port = servp->s_port; - } else { - isp->addr.sin_port = htons(SNMP_PORT); - } - } else { - isp->addr.sin_port = htons(session->remote_port); - } - } else { - isp->addr.sin_addr.s_addr = SNMP_DEFAULT_ADDRESS; - } - - me.sin_family = AF_INET; - me.sin_addr.s_addr = INADDR_ANY; - me.sin_port = htons(session->local_port); - if (bind(sd, (struct sockaddr *)&me, sizeof(me)) != 0){ - perror("bind"); - snmp_errno = SNMPERR_BAD_LOCPORT; - if (! snmp_close(session)){ - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", - api_errstring(snmp_errno)); - exit(3); - } - return 0; - } - - if( *cp == '/' ) { - session->authenticator = check_received_pkt; - sync_with_agent(session); - parse_app_community_string( session ); - session->qoS |= USEC_QOS_GENREPORT; - } - - /* replace comm pointer with pointer to new data: */ - session->community = cp; - - return session; -} - -void -sync_with_agent( session ) -struct snmp_session *session; -{ - struct snmp_pdu *pdu, *response = 0; - int status; - - session->qoS = USEC_QOS_GENREPORT; - session->userLen = 6; - session->version = SNMP_VERSION_2; - strcpy( session->userName, "public" ); - - snmp_synch_setup(session); - pdu = snmp_pdu_create(GET_REQ_MSG); - status = snmp_synch_response(session, pdu, &response); - - if (status == STAT_SUCCESS){ - memcpy( session->agentID, response->params.agentID, 12 ); - - /* save the clocks -- even though they are not authentic */ - session->agentBoots = response->params.agentBoots; - session->agentTime = response->params.agentTime; - session->agentClock = response->params.agentTime - time(NULL); - - } else { - if (status == STAT_TIMEOUT){ - printf("No Response from %s\n", session->peername); - } else { /* status == STAT_ERROR */ - printf("An error occurred, Quitting\n"); - } - exit( -1 ); - } - - /** freed to early: - snmp_free_pdu(pdu); - if (response) snmp_free_pdu(response); - **/ -} -#if 1 /***/ -/* - * Unlink one element from input request list, - * then free it and it's pdu. - */ -static void -free_one_request(isp, orp) - struct snmp_internal_session *isp; - struct request_list *orp; -{ - struct request_list *rp; - if(! orp) return; - if(isp->requests == orp){ - isp->requests = orp->next_request; /* unlink head */ - } - else{ - for(rp = isp->requests; rp; rp = rp->next_request){ - if(rp->next_request == orp){ - rp->next_request = orp->next_request; /* unlink element */ - break; - } - } - } - if (orp->pdu != NULL){ - snmp_free_pdu(orp->pdu); - } - free((char *)orp); -} -#endif /***/ -/* - * Free each element in the input request list. - */ -static void -free_request_list(rp) - struct request_list *rp; -{ - struct request_list *orp; - - while (rp) { - orp = rp; - rp = rp->next_request; - if (orp->pdu != NULL) - snmp_free_pdu(orp->pdu); - free((char *) orp); - } -} - -/* - * Close the input session. Frees all data allocated for the session, - * dequeues any pending requests, and closes any sockets allocated for - * the session. Returns 0 on error, 1 otherwise. - */ -int -snmp_close(session) - struct snmp_session *session; -{ - struct session_list *slp = NULL, *oslp = NULL; - - if (Sessions->session == session) { /* If first entry */ - slp = Sessions; - Sessions = slp->next; - } else { - for (slp = Sessions; slp; slp = slp->next) { - if (slp->session == session) { - if (oslp) /* if we found entry that points here */ - oslp->next = slp->next; /* link around this entry */ - break; - } - oslp = slp; - } - } - /* If we found the session, free all data associated with it */ - if (slp) { - if (slp->session->community != NULL) - free((char *) slp->session->community); - if (slp->session->peername != NULL) - free((char *) slp->session->peername); - free((char *) slp->session); - if (slp->internal->sd != -1) - close(slp->internal->sd); - free_request_list(slp->internal->requests); - free((char *) slp->internal); - free((char *) slp); - } else { - snmp_errno = SNMPERR_BAD_SESSION; - return 0; - } - return 1; -} - -/* - * Takes a session and a pdu and serializes the ASN PDU into the area - * pointed to by packet. out_length is the size of the data area available. - * Returns the length of the completed packet in out_length. If any errors - * occur, -1 is returned. If all goes well, 0 is returned. - */ -int -snmp_build(session, pdu, packet, out_length, is_agent) - struct snmp_session *session; - struct snmp_pdu *pdu; - u_char *packet; - int *out_length; - int is_agent; -{ - u_char buf[PACKET_LENGTH]; - u_char *cp; - struct variable_list *vp; - int length; - int totallength; - - length = *out_length; - cp = packet; - for (vp = pdu->variables; vp; vp = vp->next_variable) { - cp = snmp_build_var_op(cp, vp->name, &vp->name_length, vp->type, vp->val_len, (u_char *) vp->val.string, &length); - if (cp == NULL) - return -1; - } - totallength = cp - packet; - - length = PACKET_LENGTH; - cp = asn_build_header(buf, &length, (u_char) (ASN_SEQUENCE | ASN_CONSTRUCTOR), totallength); - if (cp == NULL) - return -1; - bcopy((char *) packet, (char *) cp, totallength); - totallength += cp - buf; - - length = *out_length; - if (pdu->command != TRP_REQ_MSG) { - /* request id */ - cp = asn_build_int(packet, &length, - (u_char) (ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *) &pdu->reqid, sizeof(pdu->reqid)); - if (cp == NULL) - return -1; - /* error status */ - cp = asn_build_int(cp, &length, - (u_char) (ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *) &pdu->errstat, sizeof(pdu->errstat)); - if (cp == NULL) - return -1; - /* error index */ - cp = asn_build_int(cp, &length, - (u_char) (ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *) &pdu->errindex, sizeof(pdu->errindex)); - if (cp == NULL) - return -1; - } else { /* this is a trap message */ - /* enterprise */ - cp = asn_build_objid(packet, &length, - (u_char) (ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_OBJECT_ID), - (oid *) pdu->enterprise, pdu->enterprise_length); - if (cp == NULL) - return -1; - /* agent-addr */ - cp = asn_build_string(cp, &length, (u_char) IPADDRESS, - (u_char *) & pdu->agent_addr.sin_addr.s_addr, sizeof(pdu->agent_addr.sin_addr.s_addr)); - if (cp == NULL) - return -1; - /* generic trap */ - cp = asn_build_int(cp, &length, - (u_char) (ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *) &pdu->trap_type, sizeof(pdu->trap_type)); - if (cp == NULL) - return -1; - /* specific trap */ - cp = asn_build_int(cp, &length, - (u_char) (ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *) &pdu->specific_type, sizeof(pdu->specific_type)); - if (cp == NULL) - return -1; - /* timestamp */ - cp = asn_build_int(cp, &length, (u_char) TIMETICKS, - (long *) &pdu->time, sizeof(pdu->time)); - if (cp == NULL) - return -1; - } - if (length < totallength) - return -1; - bcopy((char *) buf, (char *) cp, totallength); - totallength += cp - packet; - - length = PACKET_LENGTH; - cp = asn_build_header(buf, &length, (u_char) pdu->command, totallength); - if (cp == NULL) - return -1; - if (length < totallength) - return -1; - bcopy((char *) packet, (char *) cp, totallength); - totallength += cp - buf; - - length = *out_length; - - cp = snmp_auth_build(packet, &length, session, is_agent, totallength); - if (cp == NULL) - return -1; - if ((*out_length - (cp - packet)) < totallength) - return -1; - bcopy((char *) buf, (char *) cp, totallength); - totallength += cp - packet; - *out_length = totallength; - - if (session->qoS & USEC_QOS_AUTH) - md5Digest(packet, totallength, cp - (session->contextLen + 16), - cp - (session->contextLen + 16)); - - return 0; -} - -/* - * Parses the packet received on the input session, and places the data into - * the input pdu. length is the length of the input packet. If any errors - * are encountered, -1 is returned. Otherwise, a 0 is returned. - */ -static int -snmp_parse(session, pdu, data, length) - struct snmp_session *session; - struct snmp_pdu *pdu; - u_char *data; - int length; -{ - u_char msg_type; - u_char type; - u_char *var_val; - long version; - int len, four; - u_char community[256]; - int community_length = 256; - struct variable_list *vp = 0; - oid objid[MAX_NAME_LEN], *op; - u_char *origdata = data; - int origlength = length; - int ret = 0; - u_char *save_data; - - /* authenticates message and returns length if valid */ - data = snmp_auth_parse(data, &length, community, &community_length, &version); - if (data == NULL) - return -1; - - if (version != SNMP_VERSION_1 && version != SNMP_VERSION_2C && version != SNMP_VERSION_2) { - fprintf(stderr, "Wrong version: %ld\n", version); - return -1; - } - save_data = data; - - data = asn_parse_header(data, &length, &msg_type); - if (data == NULL) - return -1; - pdu->command = msg_type; - - if (session->authenticator) { - ret = session->authenticator(origdata, origlength, save_data - community_length, - community_length, session, pdu); - if (ret < 0) - return ret; - } - if (pdu->command != TRP_REQ_MSG) { - data = asn_parse_int(data, &length, &type, (long *) &pdu->reqid, sizeof(pdu->reqid)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *) &pdu->errstat, sizeof(pdu->errstat)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *) &pdu->errindex, sizeof(pdu->errindex)); - if (data == NULL) - return -1; - } else { - pdu->enterprise_length = MAX_NAME_LEN; - data = asn_parse_objid(data, &length, &type, objid, &pdu->enterprise_length); - if (data == NULL) - return -1; - pdu->enterprise = (oid *) calloc(1, pdu->enterprise_length * sizeof(oid)); - bcopy((char *) objid, (char *) pdu->enterprise, pdu->enterprise_length * sizeof(oid)); - - four = 4; - data = asn_parse_string(data, &length, &type, (u_char *) & pdu->agent_addr.sin_addr.s_addr, &four); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *) &pdu->trap_type, sizeof(pdu->trap_type)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *) &pdu->specific_type, sizeof(pdu->specific_type)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *) &pdu->time, sizeof(pdu->time)); - if (data == NULL) - return -1; - } - data = asn_parse_header(data, &length, &type); - if (data == NULL) - return -1; - if (type != (u_char) (ASN_SEQUENCE | ASN_CONSTRUCTOR)) - return -1; - while ((int) length > 0) { - if (pdu->variables == NULL) { - pdu->variables = vp = (struct variable_list *) calloc(1, sizeof(struct variable_list)); - } else { - vp->next_variable = (struct variable_list *) calloc(1, sizeof(struct variable_list)); - vp = vp->next_variable; - } - vp->next_variable = NULL; - vp->val.string = NULL; - vp->name = NULL; - vp->name_length = MAX_NAME_LEN; - data = snmp_parse_var_op(data, objid, &vp->name_length, &vp->type, &vp->val_len, &var_val, (int *) &length); - if (data == NULL) - return -1; - op = (oid *) calloc(1, (unsigned) vp->name_length * sizeof(oid)); - bcopy((char *) objid, (char *) op, vp->name_length * sizeof(oid)); - vp->name = op; - - len = PACKET_LENGTH; - switch ((short) vp->type) { - case ASN_INTEGER: - vp->val.integer = (long *) calloc(1, sizeof(long)); - vp->val_len = sizeof(long); - asn_parse_int(var_val, &len, &vp->type, (long *) vp->val.integer, sizeof(vp->val.integer)); - break; - case COUNTER: - case GAUGE: - case TIMETICKS: - case UINTEGER: - vp->val.integer = (long *) calloc(1, sizeof(unsigned long)); - vp->val_len = sizeof(unsigned long); - asn_parse_unsigned_int(var_val, &len, &vp->type, (unsigned long *) vp->val.integer, sizeof(vp->val.integer)); - break; - case COUNTER64: - vp->val.counter64 = (struct counter64 *) calloc(1, sizeof(struct counter64)); - vp->val_len = sizeof(struct counter64); - asn_parse_unsigned_int64(var_val, &len, &vp->type, - (struct counter64 *) vp->val.counter64, - sizeof(*vp->val.counter64)); - break; - case ASN_OCTET_STR: - case IPADDRESS: - case OPAQUE: - case NSAP: - vp->val.string = (u_char *) calloc(1, (unsigned) vp->val_len); - asn_parse_string(var_val, &len, &vp->type, vp->val.string, &vp->val_len); - break; - case ASN_OBJECT_ID: - vp->val_len = MAX_NAME_LEN; - asn_parse_objid(var_val, &len, &vp->type, objid, &vp->val_len); - vp->val_len *= sizeof(oid); - vp->val.objid = (oid *) calloc(1, (unsigned) vp->val_len); - bcopy((char *) objid, (char *) vp->val.objid, vp->val_len); - break; - case SNMP_NOSUCHOBJECT: - case SNMP_NOSUCHINSTANCE: - case SNMP_ENDOFMIBVIEW: - case ASN_NULL: - break; - default: - fprintf(stderr, "bad type returned (%x)\n", vp->type); - break; - } - } - return ret; -} - -/* - * Sends the input pdu on the session after calling snmp_build to create - * a serialized packet. If necessary, set some of the pdu data from the - * session defaults. Add a request corresponding to this pdu to the list - * of outstanding requests on this session, then send the pdu. - * Returns the request id of the generated packet if applicable, otherwise 1. - * On any error, 0 is returned. - * The pdu is freed by snmp_send() unless a failure occured. - */ -int -snmp_send(session, pdu) - struct snmp_session *session; - struct snmp_pdu *pdu; -{ - struct session_list *slp; - struct snmp_internal_session *isp = NULL; - u_char packet[PACKET_LENGTH]; - int length = PACKET_LENGTH; - struct request_list *rp; - struct timeval tv; - - for (slp = Sessions; slp; slp = slp->next) { - if (slp->session == session) { - isp = slp->internal; - break; - } - } - - if (!pdu) { - snmp_errno = SNMPERR_GENERR; - return 0; - } - if (isp == NULL) { - snmp_errno = SNMPERR_BAD_SESSION; - return 0; - } - if (pdu->command == GET_REQ_MSG || pdu->command == GETNEXT_REQ_MSG - || pdu->command == GET_RSP_MSG || pdu->command == SET_REQ_MSG - || pdu->command == GETBULK_REQ_MSG) { - if (pdu->reqid == SNMP_DEFAULT_REQID) - pdu->reqid = ++Reqid; - if (pdu->errstat == SNMP_DEFAULT_ERRSTAT) - pdu->errstat = 0; - if (pdu->errindex == SNMP_DEFAULT_ERRINDEX) - pdu->errindex = 0; - } else { - /* fill in trap defaults */ - pdu->reqid = 1; /* give a bogus non-error reqid for traps */ - if (pdu->enterprise_length == SNMP_DEFAULT_ENTERPRISE_LENGTH) { - pdu->enterprise = (oid *) calloc(1, sizeof(DEFAULT_ENTERPRISE)); - bcopy((char *) DEFAULT_ENTERPRISE, (char *) pdu->enterprise, sizeof(DEFAULT_ENTERPRISE)); - pdu->enterprise_length = sizeof(DEFAULT_ENTERPRISE) / sizeof(oid); - } - if (pdu->time == SNMP_DEFAULT_TIME) - pdu->time = DEFAULT_TIME; - } - if (pdu->address.sin_addr.s_addr == SNMP_DEFAULT_ADDRESS) { - if (isp->addr.sin_addr.s_addr != SNMP_DEFAULT_ADDRESS) { - bcopy((char *) &isp->addr, (char *) &pdu->address, sizeof(pdu->address)); - } else { - fprintf(stderr, "No remote IP address specified\n"); - snmp_errno = SNMPERR_BAD_ADDRESS; - return 0; - } - } - if (snmp_build(session, pdu, packet, &length, 0) < 0) { - fprintf(stderr, "Error building packet\n"); - snmp_errno = SNMPERR_GENERR; - return 0; - } -#if 1/***/ if we found entry that points here */ - oslp e key! replace... - */ - * ÿ¯ùsnmplib/snmp_api.cc.hÿ°…<Ðlib/snmp_api.c~~ñÿ±<ðÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±«=ÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²=0ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²Š=Pÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ³ -=pÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³‚ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×Áÿ³ùÿ´=ø%D(ÿ´_=à\BØÿ´©=˜4BØÿ´ø=ÈHBØÿµB>ÿµ]ÿµmÿµzÿµ >(ÿµ·ÿµÉÿµÖÿµï>@ÿ¶ÿ¶ ÿ¶4ÿ¶Pÿ¶rÿ¶~ÿ¶ˆ0ÿ¶Ÿÿ¶·ÿ¶Ù‚àÿ·ÿ·#ÿ·/ÿ·>>Xÿ·V3/usr/people/wessels/.indent.proÿ¯èÿ¯ùÿ° ÿ°ÿ°.ÿ°?ÿ°Mÿ°[ÿ°pÿ°…ÿ°•ÿ°£ÿ°²ÿ°Åÿ°Ûÿ°ñÿ± -ÿ±ÿ±2ÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±™ÿ±«ÿ±ºÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²ÿ²ÿ²2ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²ÿ²Šÿ²™ÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ²öÿ³ -ÿ³ ÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³sÿ³‚ÿ³‘ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×ÿ³çÿ³ùÿ´ÿ´ÿ´ÿ´)ÿ´3ÿ´Cÿ´Oÿ´_ÿ´kÿ´tÿ´ÿ´ÿ´Ÿÿ´©ÿ´·ÿ´Åÿ´Òÿ´Ýÿ´íÿ´øÿµÿµÿµÿµ)ÿµ7ÿµBÿµMÿµ]ÿµmÿµzÿµ‰ÿµ ÿµ«ÿµ·ÿµÉÿµÖÿµâÿµïÿ¶ÿ¶ÿ¶ ÿ¶4ÿ¶?ÿ¶Pÿ¶bÿ¶rÿ¶~ÿ¶ˆÿ¶”ÿ¶Ÿÿ¶«ÿ¶·ÿ¶Éÿ¶Ùÿ¶íÿ·ÿ·ÿ·#ÿ·/ÿ·>ÿ·Lÿ·Vÿ·fÿ·q@ reqid, sizeof(pdu->reqid)); - if (cp == NULL) - return -1; - /* error status */ - cp = asn_build_int(cp, &length, - (u_char) (ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *) &pdu->errstat, sizeof(pdu->errstat)); - if (cp == NULL) - return -1; - /* error index */ - cp = asn_build_int(cp, &length, - (u_char) (ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *) &pdu->errindex, sizeof(pdu->errindex)); - if (cp == NULL) - return -1; - } else { /* this is a trap message */ - /* enterprise */ - cp = asn_build_objid(packet, &length, - (u_char) (ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_OBJECT_ID), - (oid *) pdu->enterprise, pdu->enterprise_length); - if (cp == NULL) - return -1; - /* agent-addr */ - cp = asn_build_string(cp, &length, (u_char) IPADDRESS, - (u_char *) & pdu->agent_addr.sin_addr.s_addr, sizeof(pdu->agent_addr.sin_addr.s_addr)); - if (cp == NULL) - return -1; - /* generic trap */ - cp = asn_build_int(cp, &length, - (u_char) (ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *) &pdu->trap_type, sizeof(pdu->trap_type)); - if (cp == NULL) - return -1; - /* specific trap */ - cp = asn_build_int(cp, &length, - (u_char) (ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *) &pdu->specific_type, sizeof(pdu->specific_type)); - if (cp == NULL) - return -1; - /* timestamp */ - cp = asn_build_int(cp, &length, (u_char) TIMETICKS, - (long *) &pdu->time, sizeof(pdu->time)); - if (cp == NULL) - return -1; - } - if (length < totallength) - return -1; - bcopy((char *) buf, (char *) cp, totallength); - totallength += cp - packet; - - length = PACKET_LENGTH; - cp = asn_build_header(buf, &length, (u_char) pdu->command, totallength); - if (cp == NULL) - return -1; - if (length < totallength) - return -1; - bcopy((char *) packet, (char *) cp, totallength); - totallength += cp - buf; - - length = *out_length; - - cp = snmp_auth_build(packet, &length, session, is_agent, totallength); - if (cp == NULL) - return -1; - if ((*out_length - (cp - packet)) < totallength) - return -1; - bcopy((char *) buf, (char *) cp, totallength); - totallength += cp - packet; - *out_length = totallength; - - if (session->qoS & USEC_QOS_AUTH) - md5Digest(packet, totallength, cp - (session->contextLen + 16), - cp - (session->contextLen + 16)); - - return 0; -} - -/* - * Parses the packet received on the input session, and places the data into - * the input pdu. length is the length of the input packet. If any errors - * are encountered, -1 is returned. Otherwise, a 0 is returned. - */ -static int -snmp_parse(session, pdu, data, length) - struct snmp_session *session; - struct snmp_pdu *pdu; - u_char *data; - int length; -{ - u_char msg_type; - u_char type; - u_char *var_val; - long version; - int len, four; - u_char community[256]; - int community_length = 256; - struct variable_list *vp = 0; - oid objid[MAX_NAME_LEN], *op; - u_char *origdata = data; - int origlength = length; - int ret = 0; - u_char *save_data; - - /* authenticates message and returns length if valid */ - data = snmp_auth_parse(data, &length, community, &community_length, &version); - if (data == NULL) - return -1; - - if (version != SNMP_VERSION_1 && version != SNMP_VERSION_2C && version != SNMP_VERSION_2) { - fprintf(stderr, "Wrong version: %ld\n", version); - return -1; - } - save_data = data; - - data = asn_parse_header(data, &length, &msg_type); - if (data == NULL) - return -1; - pdu->command = msg_type; - - if (session->authenticator) { - ret = session->authenticator(origdata, origlength, save_data - community_length, - community_length, session, pdu); - if (ret < 0) - return ret; - } - if (pdu->command != TRP_REQ_MSG) { - data = asn_parse_int(data, &length, &type, (long *) &pdu->reqid, sizeof(pdu->reqid)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *) &pdu->errstat, sizeof(pdu->errstat)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *) &pdu->errindex, sizeof(pdu->errindex)); - if (data == NULL) - return -1; - } else { - pdu->enterprise_length = MAX_NAME_LEN; - data = asn_parse_objid(data, &length, &type, objid, &pdu->enterprise_length); - if (data == NULL) - return -1; - pdu->enterprise = (oid *) calloc(1, pdu->enterprise_length * sizeof(oid)); - bcopy((char *) objid, (char *) pdu->enterprise, pdu->enterprise_length * sizeof(oid)); - - four = 4; - data = asn_parse_string(data, &length, &type, (u_char *) & pdu->agent_addr.sin_addr.s_addr, &four); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *) &pdu->trap_type, sizeof(pdu->trap_type)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *) &pdu->specific_type, sizeof(pdu->specific_type)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *) &pdu->time, sizeof(pdu->time)); - if (data == NULL) - return -1; - } - data = asn_parse_header(data, &length, &type); - if (data == NULL) - return -1; - if (type != (u_char) (ASN_SEQUENCE | ASN_CONSTRUCTOR)) - return -1; - while ((int) length > 0) { - if (pdu->variables == NULL) { - pdu->variables = vp = (struct variable_list *) calloc(1, sizeof(struct variable_list)); - } else { - vp->next_variable = (struct variable_list *) calloc(1, sizeof(struct variable_list)); - vp = vp->next_variable; - } - vp->next_variable = NULL; - vp->val.string = NULL; - vp->name = NULL; - vp->name_length = MAX_NAME_LEN; - data = snmp_parse_var_op(data, objid, &vp->name_length, &vp->type, &vp->val_len, &var_val, (int *) &length); - if (data == NULL) - return -1; - op = (oid *) calloc(1, (unsigned) vp->name_length * sizeof(oid)); - bcopy((char *) objid, (char *) op, vp->name_length * sizeof(oid)); - vp->name = op; - - len = PACKET_LENGTH; - switch ((short) vp->type) { - case ASN_INTEGER: - vp->val.integer = (long *) calloc(1, sizeof(long)); - vp->val_len = sizeof(long); - asn_parse_int(var_val, &len, &vp->type, (long *) vp->val.integer, sizeof(vp->val.integer)); - break; - case COUNTER: - case GAUGE: - case TIMETICKS: - case UINTEGER: - vp->val.integer = (long *) calloc(1, sizeof(unsigned long)); - vp->val_len = sizeof(unsigned long); - asn_parse_unsigned_int(var_val, &len, &vp->type, (unsigned long *) vp->val.integer, sizeof(vp->val.integer)); - break; - case COUNTER64: - vp->val.counter64 = (struct counter64 *) calloc(1, sizeof(struct counter64)); - vp->val_len = sizeof(struct counter64); - asn_parse_unsigned_int64(var_val, &len, &vp->type, - (struct counter64 *) vp->val.counter64, - sizeof(*vp->val.counter64)); - break; - case ASN_OCTET_STR: - case IPADDRESS: - case OPAQUE: - case NSAP: - vp->val.string = (u_char *) calloc(1, (unsigned) vp->val_len); - asn_parse_string(var_val, &len, &vp->type, vp->val.string, &vp->val_len); - break; - case ASN_OBJECT_ID: - vp->val_len = MAX_NAME_LEN; - asn_parse_objid(var_val, &len, &vp->type, objid, &vp->val_len); - vp->val_len *= sizeof(oid); - vp->val.objid = (oid *) calloc(1, (unsigned) vp->val_len); - bcopy((char *) objid, (char *) vp->val.objid, vp->val_len); - break; - case SNMP_NOSUCHOBJECT: - case SNMP_NOSUCHINSTANCE: - case SNMP_ENDOFMIBVIEW: - case ASN_NULL: - break; - default: - fprintf(stderr, "bad type returned (%x)\n", vp->type); - break; - } - } - return ret; -} - -/* - * Sends the input pdu on the session after calling snmp_build to create - * a serialized packet. If necessary, set some of the pdu data from the - * session defaults. Add a request corresponding to this pdu to the list - * of outstanding requests on this session, then send the pdu. - * Returns the request id of the generated packet if applicable, otherwise 1. - * On any error, 0 is returned. - * The pdu is freed by snmp_send() unless a failure occured. - */ -int -snmp_send(session, pdu) - struct snmp_session *session; - struct snmp_pdu *pdu; -{ - struct session_list *slp; - struct snmp_internal_session *isp = NULL; - u_char packet[PACKET_LENGTH]; - int length = PACKET_LENGTH; - struct request_list *rp; - struct timeval tv; - - for (slp = Sessions; slp; slp = slp->next) { - if (slp->session == session) { - isp = slp->internal; - break; - } - } - - if (!pdu) { - snmp_errno = SNMPERR_GENERR; - return 0; - } - if (isp == NULL) { - snmp_errno = SNMPERR_BAD_SESSION; - return 0; - } - if (pdu->command == GET_REQ_MSG || pdu->command == GETNEXT_REQ_MSG - || pdu->command == GET_RSP_MSG || pdu->command == SET_REQ_MSG - || pdu->command == GETBULK_REQ_MSG) { - if (pdu->reqid == SNMP_DEFAULT_REQID) - pdu->reqid = ++Reqid; - if (pdu->errstat == SNMP_DEFAULT_ERRSTAT) - pdu->errstat = 0; - if (pdu->errindex == SNMP_DEFAULT_ERRINDEX) - pdu->errindex = 0; - } else { - /* fill in trap defaults */ - pdu->reqid = 1; /* give a bogus non-error reqid for traps */ - if (pdu->enterprise_length == SNMP_DEFAULT_ENTERPRISE_LENGTH) { - pdu->enterprise = (oid *) calloc(1, sizeof(DEFAULT_ENTERPRISE)); - bcopy((char *) DEFAULT_ENTERPRISE, (char *) pdu->enterprise, sizeof(DEFAULT_ENTERPRISE)); - pdu->enterprise_length = sizeof(DEFAULT_ENTERPRISE) / sizeof(oid); - } - if (pdu->time == SNMP_DEFAULT_TIME) - pdu->time = DEFAULT_TIME; - } - if (pdu->address.sin_addr.s_addr == SNMP_DEFAULT_ADDRESS) { - if (isp->addr.sin_addr.s_addr != SNMP_DEFAULT_ADDRESS) { - bcopy((char *) &isp->addr, (char *) &pdu->address, sizeof(pdu->address)); - } else { - fprintf(stderr, "No remote IP address specified\n"); - snmp_errno = SNMPERR_BAD_ADDRESS; - return 0; - } - } - if (snmp_build(session, pdu, packet, &length, 0) < 0) { - fprintf(stderr, "Error building packet\n"); - snmp_errno = SNMPERR_GENERR; - return 0; - } -community_len); - bcopy((char *)DEFAULT_COMMUNITY, (char *)cp, session->community_len); - } - - /* Set up connections */ - sd = socket(AF_INET, SOCK_DGRAM, 0); - if (sd < 0){ - perror("socket"); - snmp_errno = SNMPERR_GENERR; - if (!snmp_close(session)){ - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", api_errstring(snmp_errno)); - exit(1); - } - return 0; - } - isp->sd = sd; - - if (session->peername != SNMP_DEFAULT_PEERNAME){ - if ((addr = inet_addr(session->peername)) != -1){ - bcopy((char *)&addr, (char *)&isp->addr.sin_addr, sizeof(isp->addr.sin_addr)); - } else { - hp = gethostbyname(session->peername); - if (hp == NULL){ - fprintf(stderr, "unknown host: %s\n", session->peername); - snmp_errno = SNMPERR_BAD_ADDRESS; - if (!snmp_close(session)){ - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", api_errstring(snmp_errno)); - exit(2); - } - return 0; - } else { - bcopy((char *)hp->h_addr, (char *)&isp->addr.sin_addr, hp->h_length); - } - } - isp->addr.sin_family = AF_INET; - if (session->remote_port == SNMP_DEFAULT_REMPORT){ - /*servp = getservbyname("snmp", "udp");*/ - servp=NULL; - if (servp != NULL){ - isp->addr.sin_port = servp->s_port; - } else { - isp->addr.sin_port = htons(SNMP_PORT); - } - } else { - isp->addr.sin_port = htons(session->remote_port); - } - } else { - isp->addr.sin_addr.s_addr = SNMP_DEFAULT_ADDRESS; - } - - me.sin_family = AF_INET; - me.sin_addr.s_addr = INADDR_ANY; - me.sin_port = htons(session->local_port); - if (bind(sd, (struct sockaddr *)&me, sizeof(me)) != 0){ - perror("bind"); - snmp_errno = SNMPERR_BAD_LOCPORT; - if (! snmp_close(session)){ - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", - api_errstring(snmp_errno)); - exit(3); - } - return 0; - } - - if( *cp == '/' ) { - session->authenticator = check_received_pkt; - sync_with_agent(session); - parse_app_community_string( session ); - session->qoS |= USEC_QOS_GENREPORT; - } - - /* replace comm pointer with pointer to new data: */ - session->community = cp; - - return session; -} - -void -sync_with_agent( session ) -struct snmp_session *session; -{ - struct snmp_pdu *pdu, *response = 0; - int status; - - session->qoS = USEC_QOS_GENREPORT; - session->userLen = 6; - session->version = SNMP_VERSION_2; - strcpy( session->userName, "public" ); - - snmp_synch_setup(session); - pdu = snmp_pdu_create(GET_REQ_MSG); - status = snmp_synch_response(session, pdu, &response); - - if (status == STAT_SUCCESS){ - memcpy( session->agentID, response->params.agentID, 12 ); - - /* save the clocks -- even though they are not authentic */ - session->agentBoots = response->params.agentBoots; - session->agentTime = response->params.agentTime; - session->agentClock = response->params.agentTime - time(NULL); - - } else { - if (status == STAT_TIMEOUT){ - printf("No Response from %s\n", session->peername); - } else { /* status == STAT_ERROR */ - printf("An error occurred, Quitting\n"); - } - exit( -1 ); - } - - /** freed to early: - snmp_free_pdu(pdu); - if (response) snmp_free_pdu(response); - **/ -} -#if 1 /***/ -/* - * Unlink one element from input request list, - * then free it and it's pdu. - */ -static void -free_one_request(isp, orp) - struct snmp_internal_session *isp; - struct request_list *orp; -{ - struct request_list *rp; - if(! orp) return; - if(isp->requests == orp){ - isp->requests = orp->next_request; /* unlink head */ - } - else{ - for(rp = isp->requests; rp; rp = rp->next_request){ - if(rp->next_request == orp){ - rp->next_request = orp->next_request; /* unlink element */ - break; - } - } - } - if (orp->pdu != NULL){ - snmp_free_pdu(orp->pdu); - } - free((char *)orp); -} -#endif /***/ -/* - * Free each element in the input request list. - */ -static void -free_request_list(rp) - struct request_list *rp; -{ - struct request_list *orp; - - while (rp) { - orp = rp; - rp = rp->next_request; - if (orp->pdu != NULL) - snmp_free_pdu(orp->pdu); - free((char *) orp); - } -} - -/* - * Close the input session. Frees all data allocated for the session, - * dequeues any pending requests, and closes any sockets allocated for - * the session. Returns 0 on error, 1 otherwise. - */ -int -snmp_close(session) - struct snmp_session *session; -{ - struct session_list *slp = NULL, *oslp = NULL; - - if (Sessions->session == session) { /* If first entry */ - slp = Sessions; - Sessions = slp->next; - } else { - for (slp = Sessions; slp; slp = slp->next) { - if (slp->session == session) { - if (oslp) /* if we found entry that points here */ - oslp->next = slp->next; /* link around this entry */ - break; - } - oslp = slp; - } - } - /* If we found the session, free all data associated with it */ - if (slp) { - if (slp->session->community != NULL) - free((char *) slp->session->community); - if (slp->session->peername != NULL) - free((char *) slp->session->peername); - free((char *) slp->session); - if (slp->internal->sd != -1) - close(slp->internal->sd); - free_request_list(slp->internal->requests); - free((char *) slp->internal); - free((char *) slp); - } else { - snmp_errno = SNMPERR_BAD_SESSION; - return 0; - } - return 1; -} - -/* - * Takes a session and a pdu and serializes the ASN PDU into the area - * pointed to by packet. out_length is the size of the data area available. - * Returns the length of the completed packet in out_length. If any errors - * occur, -1 is returned. If all goes well, 0 is returned. - */ -int -snmp_build(session, pdu, packet, out_length, is_agent) - struct snmp_session *session; - struct snmp_pdu *pdu; - u_char *packet; - int *out_length; - int is_agent; -{ - u_char buf[PACKET_LENGTH]; - u_char *cp; - struct variable_list *vp; - int length; - int totallength; - - length = *out_length; - cp = packet; - for (vp = pdu->variables; vp; vp = vp->next_variable) { - cp = snmp_build_var_op(cp, vp->name, &vp->name_length, vp->type, vp->val_len, (u_char *) vp->val.string, &length); - if (cp == NULL) - return -1; - } - totallength = cp - packet; - - length = PACKET_LENGTH; - cp = asn_build_header(buf, &length, (u_char) (ASN_SEQUENCE | ASN_CONSTRUCTOR), totallength); - if (cp == NULL) - return -1; - bcopy((char *) packet, (char *) cp, totallength); - totallength += cp - buf; - - length = *out_length; - if (pdu->command != TRP_REQ_MSG) { - /* request id */ - cp = asn_build_int(packet, &length, - (u_char) (ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *) &pdu->BÐ+= m -È /* >X*/ B4¨NMPT˜à */cfor testing purposes */e key! replace... - */ - * ÿ¯ùsnmplib/snmp_api.cc.hÿ°…<Ðlib/snmp_api.c~~ñÿ±<ðÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±«=ÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²=0ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²Š=Pÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ³ -=pÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³‚ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×Áÿ³ùÿ´=ø%D(ÿ´_=à\BØÿ´©=˜4BØÿ´ø=ÈHBØÿµB>ÿµ]ÿµmÿµzÿµ >(ÿµ·ÿµÉÿµÖÿµï>@ÿ¶ÿ¶ ÿ¶4ÿ¶Pÿ¶rÿ¶~ÿ¶ˆ0ÿ¶Ÿ4¨ÿ¶·ÿ¶Ù‰èÿ·ÿ·#ÿ·/ÿ·>>Xÿ·V3/usr/people/wessels/.indent.proÿ¯èÿ¯ùÿ° ÿ°ÿ°.ÿ°?ÿ°Mÿ°[ÿ°pÿ°…ÿ°•ÿ°£ÿ°²ÿ°Åÿ°Ûÿ°ñÿ± -ÿ±ÿ±2ÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±™ÿ±«ÿ±ºÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²ÿ²ÿ²2ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²ÿ²Šÿ²™ÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ²öÿ³ -ÿ³ ÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³sÿ³‚ÿ³‘ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×ÿ³çÿ³ùÿ´ÿ´ÿ´ÿ´)ÿ´3ÿ´Cÿ´Oÿ´_ÿ´kÿ´tÿ´ÿ´ÿ´Ÿÿ´©ÿ´·ÿ´Åÿ´Òÿ´Ýÿ´íÿ´øÿµÿµÿµÿµ)ÿµ7ÿµBÿµMÿµ]ÿµmÿµzÿµ‰ÿµ ÿµ«ÿµ·ÿµÉÿµÖÿµâÿµïÿ¶ÿ¶ÿ¶ ÿ¶4ÿ¶?ÿ¶Pÿ¶bÿ¶rÿ¶~ÿ¶ˆÿ¶”ÿ¶Ÿÿ¶«ÿ¶·ÿ¶Éÿ¶Ùÿ¶íÿ·ÿ·ÿ·#ÿ·/ÿ·>ÿ·Lÿ·Vÿ·fÿ·q°>X 4¨ $  @,2ˆ…>X‚àC Ž0   ¸ude/snmp_groupvars.h~ àude/snmp_groupvars.h ŽX Ž€ Ž¨ ŽÐ „©/*********************************************************** - Copyright 1989 by Carnegie Mellon University - - All Rights Reserved - -Permission to use, copy, modify, and distribute this software and its -documentation for any purpose and without fee is hereby granted, -provided that the above copyright notice appear in all copies and that -both that copyright notice and this permission notice appear in -supporting documentation, and that the name of CMU not be -used in advertising or publicity pertaining to distribution of the -software without specific, written prior permission. - -CMU DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING -ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL -CMU BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR -ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, -WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, -ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS -SOFTWARE. -******************************************************************/ -/* - * snmp_api.c - API for access to snmp. - */ -#define DEBUG_SNMPTRACE 0 /* set to 1 to print all SNMP actions */ -#define DEBUG_SNMPFULLDUMP 0 /* set to 1 to dump all SNMP packets */ - -#include -#include -#include -#include -#include -#include -#include -#ifdef linux -#include -#include -#include -#include -#endif - - -#include "asn1.h" -#include "snmp.h" -#include "snmp_impl.h" -#include "snmp_api.h" -#include "snmp_client.h" - -#define PACKET_LENGTH 4500 - -#ifndef BSD4_3 -#define BSD4_2 -#endif - -#if !defined(BSD4_3) && !defined(linux) && !defined(sun) - -typedef long fd_mask; -#define NFDBITS (sizeof(fd_mask) * NBBY) /* bits per mask */ - -#define FD_SET(n, p) ((p)->fds_bits[(n)/NFDBITS] |= (1 << ((n) % NFDBITS))) -#define FD_CLR(n, p) ((p)->fds_bits[(n)/NFDBITS] &= ~(1 << ((n) % NFDBITS))) -#define FD_ISSET(n, p) ((p)->fds_bits[(n)/NFDBITS] & (1 << ((n) % NFDBITS))) -#define FD_ZERO(p) bzero((char *)(p), sizeof(*(p))) -#endif - -oid default_enterprise[] = {1, 3, 6, 1, 4, 1, 3, 1, 1}; /* enterprises.cmu.systems.cmuSNMP */ - -#define DEFAULT_COMMUNITY "public" -#define DEFAULT_REMPORT SNMP_PORT -#define DEFAULT_ENTERPRISE default_enterprise -#define DEFAULT_TIME 0 -#define DEFAULT_MMS 1389 /* large, randomly picked for testing purposes */ - -/* - * Internal information about the state of the snmp session. - */ -struct snmp_internal_session { - int sd; /* socket descriptor for this connection */ - ipaddr addr; /* address of connected peer */ - struct request_list *requests;/* Info about outstanding requests */ -}; - -/* - * A list of all the outstanding requests for a particular session. - */ -struct request_list { - struct request_list *next_request; - u_long request_id; /* request id */ - int retries; /* Number of retries */ - u_long timeout; /* length to wait for timeout */ - struct timeval time; /* Time this request was made */ - struct timeval expire; /* time this request is due to expire */ - struct snmp_pdu *pdu; /* The pdu for this request (saved so it can be retransmitted */ -}; - -/* - * The list of active/open sessions. - */ -struct session_list { - struct session_list *next; - struct snmp_session *session; - struct snmp_internal_session *internal; -}; - -struct session_list *Sessions = NULL; - -u_long Reqid = 0; -int snmp_errno = 0; - -char *api_errors[4] = { - "Unknown session", - "Unknown host", - "Invalid local port", - "Unknown Error" -}; - - -void sync_with_agent(); -int parse_app_community_string(); -void snmp_synch_setup(); -int snmp_synch_response(); -void md5Digest(); - - -static char * -api_errstring(snmp_errnumber) - int snmp_errnumber; -{ - if (snmp_errnumber <= SNMPERR_BAD_SESSION && snmp_errnumber >= SNMPERR_GENERR){ - return api_errors[snmp_errnumber + 4]; - } else { - return "Unknown Error"; - } -} - -#if 0 -/* - * Gets initial request ID for all transactions. - */ -static void -init_snmp(){ - struct timeval tv; - - gettimeofday(&tv, (struct timezone *)0); - srandom(tv.tv_sec ^ tv.tv_usec); - Reqid = random(); -} -#endif - - -/* - * Dump snmp packet to stdout: - */ -static void -snmp_print_packet(packet, length, addr, code) - char *packet; - int length; - ipaddr addr; - int code; -{ - if(length < 0) { - return; - } - if (code <= 0) { /* received */ - printf("\nReceived %4d bytes from ", length); - } - else { /* sending */ - printf("\nSending %4d bytes to ", length); - } - printf("%s:", inet_ntoa(addr.sin_addr)); -#if DEBUG_SNMPFULLDUMP - for (count = 0; count < length; count++) { - if ((count & 15) == 0) { - printf("\n "); - } - printf("%02X ", (int)(packet[count]&255)); - } -#endif - fflush(stdout); -} - -#if DEBUG_SNMPTRACE -/* - * Print request - */ -#define TRACE_SEND (0) -#define TRACE_RECV (1) -#define TRACE_TIMEOUT (2) -static void -snmp_print_trace(slp, rp, code) - struct session_list *slp; - struct request_list *rp; - int code; -{ - int reqid=0, retries=1; - if( rp ){ - reqid = rp->request_id; - retries = rp->retries; - } - printf("\n Session %2d ReqId %4d ", slp->internal->sd, reqid); - switch(code) - { - case TRACE_SEND: printf("send pdu (%d)", retries);break; - case TRACE_RECV: printf("recv pdu");break; - case TRACE_TIMEOUT: printf("time out");break; - } - fflush(stdout); -} -#endif /* DEBUG_SNMPTRACE */ - - - - -/* - * Sets up the session with the snmp_session information provided - * by the user. Then opens and binds the necessary UDP port. - * A handle to the created session is returned (this is different than - * the pointer passed to snmp_open()). On any error, NULL is returned - * and snmp_errno is set to the appropriate error code. - */ -struct snmp_session * -snmp_open(session) - struct snmp_session *session; -{ - struct session_list *slp; - struct snmp_internal_session *isp; - u_char *cp; - int sd; - u_long addr; - struct sockaddr_in me; - struct hostent *hp; - struct servent *servp; - extern int check_received_pkt(); - - /* Copy session structure and link into list */ - slp = (struct session_list *)calloc(1, sizeof(struct session_list)); - slp->internal = isp = (struct snmp_internal_session *)calloc(1, sizeof(struct snmp_internal_session)); - bzero((char *)isp, sizeof(struct snmp_internal_session)); - slp->internal->sd = -1; /* mark it not set */ - slp->session = (struct snmp_session *)calloc(1, sizeof(struct snmp_session)); - bcopy((char *)session, (char *)slp->session, sizeof(struct snmp_session)); - session = slp->session; - /* now link it in. */ - slp->next = Sessions; - Sessions = slp; - - /* - * session now points to the new structure that still contains pointers to - * data allocated elsewhere. Some of this data is copied to space malloc'd - * here, and the pointer replaced with the new one. - */ - - if (session->peername != NULL){ - cp = (u_char *)calloc(1, (unsigned)strlen(session->peername) + 1); - strcpy((char *)cp, session->peername); - session->peername = (char *)cp; - } - - if (session->retries == SNMP_DEFAULT_RETRIES) - session->retries = SNMP_API_DEFAULT_RETRIES; - if (session->timeout == SNMP_DEFAULT_TIMEOUT) - session->timeout = SNMP_API_DEFAULT_TIMEOUT; - if (session->MMS == 0 ) - session->MMS = DEFAULT_MMS; - isp->requests = NULL; - - - /* Fill in defaults if necessary */ - if (session->community_len != SNMP_DEFAULT_COMMUNITY_LEN){ - if( *session->community == '+' ) { - session->community_len--; - cp = (u_char *) calloc(1, (unsigned) session->community_len); - bcopy((char *) session->community+1, (char *)cp, - session->community_len); - session->version = SNMP_VERSION_2C; - } else { - cp = (u_char *) calloc(1, (unsigned) session->community_len); - bcopy((char *) session->community, (char *) cp, - session->community_len); - } - - } else { - session->community_len = strlen(DEFAULT_COMMUNITY); - cp = (u_char *)calloc(1, (unsigned)session->community_len); - bcopy((char *)DEFAULT_COMMUNITY, (char *)cp, session->community_len); - } - - /* Set up connections */ - sd = socket(AF_INET, SOCK_DGRAM, 0); - if (sd < 0){ - perror("socket"); - snmp_errno = SNMPERR_GENERR; - if (!snmp_close(session)){ - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", api_errstring(snmp_errno)); - exit(1); - } - return 0; - } - isp->sd = sd; - - if (session->peername != SNMP_DEFAULT_PEERNAME){ - if ((addr = inet_addr(session->peername)) != -1){ - bcopy((char *)&addr, (char *)&isp->addr.sin_addr, sizeof(isp->addr.sin_addr)); - } else { - hp = gethostbyname(session->peername); - if (hp == NULL){ - fprintf(stderr, "unknown host: %s\n", session->peername); - snmp_errno = SNMPERR_BAD_ADDRESS; - if (!snmp_close(session)){ - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", api_errstring(snmp_errno)); - exit(2); - } - return 0; - } else { - bcopy((char *)hp->h_addr, (char *)&isp->addr.sin_addr, hp->h_length); - } - } - isp->addr.sin_family = AF_INET; - if (session->remote_port == SNMP_DEFAULT_REMPORT){ - /*servp = getservbyname("snmp", "udp");*/ - servp=NULL; - if (servp != NULL){ - isp->addr.sin_port = servp->s_port; - } else { - isp->addr.sin_port = htons(SNMP_PORT); - } - } else { - isp->addr.sin_port = htons(session->remote_port); - } - } else { - isp->addr.sin_addr.s_addr = SNMP_DEFAULT_ADDRESS; - } - - me.sin_family = AF_INET; - me.sin_addr.s_addr = INADDR_ANY; - me.sin_port = htons(session->local_port); - if (bind(sd, (struct sockaddr *)&me, sizeof(me)) != 0){ - perror("bind"); - snmp_errno = SNMPERR_BAD_LOCPORT; - if (! snmp_close(session)){ - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", - api_errstring(snmp_errno)); - exit(3); - } - return 0; - } - - if( *cp == '/' ) { - session->authenticator = check_received_pkt; - sync_with_agent(session); - parse_app_community_string( session ); - session->qoS |= USEC_QOS_GENREPORT; - } - - /* replace comm pointer with pointer to new data: */ - session->community = cp; - - return session; -} - -void -sync_with_agent( session ) -struct snmp_session *session; -{ - struct snmp_pdu *pdu, *response = 0; - int status; - - session->qoS = USEC_QOS_GENREPORT; - session->userLen = 6; - session->version = SNMP_VERSION_2; - strcpy( session->userName, "public" ); - - snmp_synch_setup(session); - pdu = snmp_pdu_create(GET_REQ_MSG); - status = snmp_synch_response(session, pdu, &response); - - if (status == STAT_SUCCESS){ - memcpy( session->agentID, response->params.agentID, 12 ); - - /* save the clocks -- even though they are not authentic */ - session->agentBoots = response->params.agentBoots; - session->agentTime = response->params.agentTime; - session->agentClock = response->params.agentTime - time(NULL); - - } else { - if (status == STAT_TIMEOUT){ - printf("No Response from %s\n", session->peername); - } else { /* status == STAT_ERROR */ - printf("An error occurred, Quitting\n"); - } - exit( -1 ); - } - - /** freed to early: - snmp_free_pdu(pdu); - if (response) snmp_free_pdu(response); - **/ -} -#if 1 /***/ -/* - * Unlink one element from input request list, - * then free it and it's pdu. - */ -static void -free_one_request(isp, orp) - struct snmp_internal_session *isp; - struct request_list *orp; -{ - struct request_list *rp; - if(! orp) return; - if(isp->requests == orp){ - isp->requests = orp->next_request; /* unlink head */ - } - else{ - for(rp = isp->requests; rp; rp = rp->next_request){ - if(rp->next_request == orp){ - rp->next_request = orp->next_request; /* unlink element */ - break; - } - } - } - if (orp->pdu != NULL){ - snmp_free_pdu(orp->pdu); - } - free((char *)orp); -} -#endif /***/ -/* - * Free each element in the input request list. - */ -static void -free_request_list(rp) - struct request_list *rp; -{ - struct request_list *orp; - - while(rp){ - orp = rp; - rp = rp->next_request; - if (orp->pdu != NULL) - snmp_free_pdu(orp->pdu); - free((char *)orp); - } -} - -/* - * Close the input session. Frees all data allocated for the session, - * dequeues any pending requests, and closes any sockets allocated for - * the session. Returns 0 on error, 1 otherwise. - */ -int -snmp_close(session) - struct snmp_session *session; -{ - struct session_list *slp = NULL, *oslp = NULL; - - if (Sessions->session == session){ /* If first entry */ - slp = Sessions; - Sessions = slp->next; - } else { - for(slp = Sessions; slp; slp = slp->next){ - if (slp->session == session){ - if (oslp) /* if we found entry that points here */ - oslp->next = slp->next; /* link around this entry */ - break; - } - oslp = slp; - } - } - /* If we found the session, free all data associated with it */ - if (slp){ - if (slp->session->community != NULL) - free((char *)slp->session->community); - if(slp->session->peername != NULL) - free((char *)slp->session->peername); - free((char *)slp->session); - if (slp->internal->sd != -1) - close(slp->internal->sd); - free_request_list(slp->internal->requests); - free((char *)slp->internal); - free((char *)slp); - } else { - snmp_errno = SNMPERR_BAD_SESSION; - return 0; - } - return 1; -} - -/* - * Takes a session and a pdu and serializes the ASN PDU into the area - * pointed to by packet. out_length is the size of the data area available. - * Returns the length of the completed packet in out_length. If any errors - * occur, -1 is returned. If all goes well, 0 is returned. - */ -int -snmp_build(session, pdu, packet, out_length, is_agent) - struct snmp_session *session; - struct snmp_pdu *pdu; - u_char *packet; - int *out_length; - int is_agent; -{ - u_char buf[PACKET_LENGTH]; - u_char *cp; - struct variable_list *vp; - int length; - int totallength; - - length = *out_length; - cp = packet; - for(vp = pdu->variables; vp; vp = vp->next_variable){ - cp = snmp_build_var_op(cp, vp->name, &vp->name_length, vp->type, vp->val_len, (u_char *)vp->val.string, &length); - if (cp == NULL) - return -1; - } - totallength = cp - packet; - - length = PACKET_LENGTH; - cp = asn_build_header(buf, &length, (u_char)(ASN_SEQUENCE | ASN_CONSTRUCTOR), totallength); - if (cp == NULL) - return -1; - bcopy((char *)packet, (char *)cp, totallength); - totallength += cp - buf; - - length = *out_length; - if (pdu->command != TRP_REQ_MSG){ - /* request id */ - cp = asn_build_int(packet, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->reqid, sizeof(pdu->reqid)); - if (cp == NULL) - return -1; - /* error status */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->errstat, sizeof(pdu->errstat)); - if (cp == NULL) - return -1; - /* error index */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->errindex, sizeof(pdu->errindex)); - if (cp == NULL) - return -1; - } else { /* this is a trap message */ - /* enterprise */ - cp = asn_build_objid(packet, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_OBJECT_ID), - (oid *)pdu->enterprise, pdu->enterprise_length); - if (cp == NULL) - return -1; - /* agent-addr */ - cp = asn_build_string(cp, &length, (u_char)IPADDRESS, - (u_char *)&pdu->agent_addr.sin_addr.s_addr, sizeof(pdu->agent_addr.sin_addr.s_addr)); - if (cp == NULL) - return -1; - /* generic trap */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->trap_type, sizeof(pdu->trap_type)); - if (cp == NULL) - return -1; - /* specific trap */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->specific_type, sizeof(pdu->specific_type)); - if (cp == NULL) - return -1; - /* timestamp */ - cp = asn_build_int(cp, &length, (u_char)TIMETICKS, - (long *)&pdu->time, sizeof(pdu->time)); - if (cp == NULL) - return -1; - } - if (length < totallength) - return -1; - bcopy((char *)buf, (char *)cp, totallength); - totallength += cp - packet; - - length = PACKET_LENGTH; - cp = asn_build_header(buf, &length, (u_char)pdu->command, totallength); - if (cp == NULL) - return -1; - if (length < totallength) - return -1; - bcopy((char *)packet, (char *)cp, totallength); - totallength += cp - buf; - - length = *out_length; - - cp = snmp_auth_build( packet, &length, session, is_agent, totallength ); - if (cp == NULL) - return -1; - if ((*out_length - (cp - packet)) < totallength) - return -1; - bcopy((char *)buf, (char *)cp, totallength); - totallength += cp - packet; - *out_length = totallength; - - if( session->qoS & USEC_QOS_AUTH ) - md5Digest( packet, totallength, cp - (session->contextLen + 16), - cp - (session->contextLen + 16) ); - - return 0; -} - -/* - * Parses the packet received on the input session, and places the data into - * the input pdu. length is the length of the input packet. If any errors - * are encountered, -1 is returned. Otherwise, a 0 is returned. - */ -static int -snmp_parse(session, pdu, data, length) - struct snmp_session *session; - struct snmp_pdu *pdu; - u_char *data; - int length; -{ - u_char msg_type; - u_char type; - u_char *var_val; - long version; - int len, four; - u_char community[256]; - int community_length = 256; - struct variable_list *vp = 0; - oid objid[MAX_NAME_LEN], *op; - u_char *origdata = data; - int origlength = length; - int ret = 0; - u_char *save_data; - - /* authenticates message and returns length if valid */ - data = snmp_auth_parse(data, &length, community, &community_length, &version); - if (data == NULL) - return -1; - - if( version != SNMP_VERSION_1 && version != SNMP_VERSION_2C && version != SNMP_VERSION_2 ) { - fprintf(stderr, "Wrong version: %ld\n", version); - return -1; - } - - save_data = data; - - data = asn_parse_header(data, &length, &msg_type); - if (data == NULL) - return -1; - pdu->command = msg_type; - - if( session->authenticator ) { - ret = session->authenticator( origdata, origlength, save_data - community_length, - community_length, session, pdu ); - if( ret < 0 ) return ret; - } - - if (pdu->command != TRP_REQ_MSG){ - data = asn_parse_int(data, &length, &type, (long *)&pdu->reqid, sizeof(pdu->reqid)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->errstat, sizeof(pdu->errstat)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->errindex, sizeof(pdu->errindex)); - if (data == NULL) - return -1; - } else { - pdu->enterprise_length = MAX_NAME_LEN; - data = asn_parse_objid(data, &length, &type, objid, &pdu->enterprise_length); - if (data == NULL) - return -1; - pdu->enterprise = (oid *)calloc(1, pdu->enterprise_length * sizeof(oid)); - bcopy((char *)objid, (char *)pdu->enterprise, pdu->enterprise_length * sizeof(oid)); - - four = 4; - data = asn_parse_string(data, &length, &type, (u_char *)&pdu->agent_addr.sin_addr.s_addr, &four); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->trap_type, sizeof(pdu->trap_type)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->specific_type, sizeof(pdu->specific_type)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->time, sizeof(pdu->time)); - if (data == NULL) - return -1; - } - data = asn_parse_header(data, &length, &type); - if (data == NULL) - return -1; - if (type != (u_char)(ASN_SEQUENCE | ASN_CONSTRUCTOR)) - return -1; - while((int)length > 0){ - if (pdu->variables == NULL){ - pdu->variables = vp = (struct variable_list *)calloc(1, sizeof(struct variable_list)); - } else { - vp->next_variable = (struct variable_list *)calloc(1, sizeof(struct variable_list)); - vp = vp->next_variable; - } - vp->next_variable = NULL; - vp->val.string = NULL; - vp->name = NULL; - vp->name_length = MAX_NAME_LEN; - data = snmp_parse_var_op(data, objid, &vp->name_length, &vp->type, &vp->val_len, &var_val, (int *)&length); - if (data == NULL) - return -1; - op = (oid *)calloc(1, (unsigned)vp->name_length * sizeof(oid)); - bcopy((char *)objid, (char *)op, vp->name_length * sizeof(oid)); - vp->name = op; - - len = PACKET_LENGTH; - switch((short)vp->type){ - case ASN_INTEGER: - vp->val.integer = (long *)calloc(1, sizeof(long)); - vp->val_len = sizeof(long); - asn_parse_int(var_val, &len, &vp->type, (long *)vp->val.integer, sizeof(vp->val.integer)); - break; - case COUNTER: - case GAUGE: - case TIMETICKS: - case UINTEGER: - vp->val.integer = (long *)calloc(1, sizeof(unsigned long)); - vp->val_len = sizeof(unsigned long); - asn_parse_unsigned_int(var_val, &len, &vp->type, (unsigned long *)vp->val.integer, sizeof(vp->val.integer)); - break; - case COUNTER64: - vp->val.counter64 = (struct counter64 *)calloc(1, sizeof(struct counter64) ); - vp->val_len = sizeof(struct counter64); - asn_parse_unsigned_int64(var_val, &len, &vp->type, - (struct counter64 *)vp->val.counter64, - sizeof(*vp->val.counter64)); - break; - case ASN_OCTET_STR: - case IPADDRESS: - case OPAQUE: - case NSAP: - vp->val.string = (u_char *)calloc(1, (unsigned)vp->val_len); - asn_parse_string(var_val, &len, &vp->type, vp->val.string, &vp->val_len); - break; - case ASN_OBJECT_ID: - vp->val_len = MAX_NAME_LEN; - asn_parse_objid(var_val, &len, &vp->type, objid, &vp->val_len); - vp->val_len *= sizeof(oid); - vp->val.objid = (oid *)calloc(1, (unsigned)vp->val_len); - bcopy((char *)objid, (char *)vp->val.objid, vp->val_len); - break; - case SNMP_NOSUCHOBJECT: - case SNMP_NOSUCHINSTANCE: - case SNMP_ENDOFMIBVIEW: - case ASN_NULL: - break; - default: - fprintf(stderr, "bad type returned (%x)\n", vp->type); - break; - } - } - return ret; -} - -/* - * Sends the input pdu on the session after calling snmp_build to create - * a serialized packet. If necessary, set some of the pdu data from the - * session defaults. Add a request corresponding to this pdu to the list - * of outstanding requests on this session, then send the pdu. - * Returns the request id of the generated packet if applicable, otherwise 1. - * On any error, 0 is returned. - * The pdu is freed by snmp_send() unless a failure occured. - */ -int -snmp_send(session, pdu) - struct snmp_session *session; - struct snmp_pdu *pdu; -{ - struct session_list *slp; - struct snmp_internal_session *isp = NULL; - u_char packet[PACKET_LENGTH]; - int length = PACKET_LENGTH; - struct request_list *rp; - struct timeval tv; - - for(slp = Sessions; slp; slp = slp->next){ - if (slp->session == session){ - isp = slp->internal; - break; - } - } - - if (! pdu) { - snmp_errno = SNMPERR_GENERR; - return 0; - } - - if (isp == NULL){ - snmp_errno = SNMPERR_BAD_SESSION; - return 0; - } - if (pdu->command == GET_REQ_MSG || pdu->command == GETNEXT_REQ_MSG - || pdu->command == GET_RSP_MSG || pdu->command == SET_REQ_MSG - || pdu->command == GETBULK_REQ_MSG ){ - if (pdu->reqid == SNMP_DEFAULT_REQID) - pdu->reqid = ++Reqid; - if (pdu->errstat == SNMP_DEFAULT_ERRSTAT) - pdu->errstat = 0; - if (pdu->errindex == SNMP_DEFAULT_ERRINDEX) - pdu->errindex = 0; - } else { - /* fill in trap defaults */ - pdu->reqid = 1; /* give a bogus non-error reqid for traps */ - if (pdu->enterprise_length == SNMP_DEFAULT_ENTERPRISE_LENGTH){ - pdu->enterprise = (oid *)calloc(1, sizeof(DEFAULT_ENTERPRISE)); - bcopy((char *)DEFAULT_ENTERPRISE, (char *)pdu->enterprise, sizeof(DEFAULT_ENTERPRISE)); - pdu->enterprise_length = sizeof(DEFAULT_ENTERPRISE)/sizeof(oid); - } - if (pdu->time == SNMP_DEFAULT_TIME) - pdu->time = DEFAULT_TIME; - } - if (pdu->address.sin_addr.s_addr == SNMP_DEFAULT_ADDRESS){ - if (isp->addr.sin_addr.s_addr != SNMP_DEFAULT_ADDRESS){ - bcopy((char *)&isp->addr, (char *)&pdu->address, sizeof(pdu->address)); - } else { - fprintf(stderr, "No remote IP address specified\n"); - snmp_errno = SNMPERR_BAD_ADDRESS; - return 0; - } - } - - - if (snmp_build(session, pdu, packet, &length, 0) < 0){ - fprintf(stderr, "Error building packet\n"); - snmp_errno = SNMPERR_GENERR; - return 0; - } -#if 1 /***/ - if (snmp_dump_packet) { - snmp_print_packet(packet, length, pdu->address, 1); - } -#endif/***/ if we found entry that points here */ - oslp e key! replace... - */ - * ÿ¯ùsnmplib/snmp_api.cc.hÿ°…<Ðlib/snmp_api.c~~ñÿ±<ðÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±«=ÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²=0ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²Š=Pÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ³ -=pÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³‚ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×Áÿ³ùÿ´=ø%D(ÿ´_=à\BØÿ´©=˜4BØÿ´ø=ÈHBØÿµB>ÿµ]ÿµmÿµzÿµ >(ÿµ·ÿµÉÿµÖÿµï>@ÿ¶ÿ¶ ÿ¶4ÿ¶Pÿ¶rÿ¶~ÿ¶ˆ0ÿ¶Ÿ‚àÿ¶·ÿ¶Ù4¨ÿ·ÿ·#ÿ·/ÿ·>>Xÿ·V3/usr/people/wessels/.indent.proÿ¯èÿ¯ùÿ° ÿ°ÿ°.ÿ°?ÿ°Mÿ°[ÿ°pÿ°…ÿ°•ÿ°£ÿ°²ÿ°Åÿ°Ûÿ°ñÿ± -ÿ±ÿ±2ÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±™ÿ±«ÿ±ºÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²ÿ²ÿ²2ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²ÿ²Šÿ²™ÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ²öÿ³ -ÿ³ ÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³sÿ³‚ÿ³‘ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×ÿ³çÿ³ùÿ´ÿ´ÿ´ÿ´)ÿ´3ÿ´Cÿ´Oÿ´_ÿ´kÿ´tÿ´ÿ´ÿ´Ÿÿ´©ÿ´·ÿ´Åÿ´Òÿ´Ýÿ´íÿ´øÿµÿµÿµÿµ)ÿµ7ÿµBÿµMÿµ]ÿµmÿµzÿµ‰ÿµ ÿµ«ÿµ·ÿµÉÿµÖÿµâÿµïÿ¶ÿ¶ÿ¶ ÿ¶4ÿ¶?ÿ¶Pÿ¶bÿ¶rÿ¶~ÿ¶ˆÿ¶”ÿ¶Ÿÿ¶«ÿ¶·ÿ¶Éÿ¶Ùÿ¶íÿ·ÿ·ÿ·#ÿ·/ÿ·>ÿ·Lÿ·Vÿ·fÿ·q@ snmp_pdu *pdu; - u_char *data; - int length; -{ - u_char msg_type; - u_char type; - u_char *var_val; - long version; - int len, four; - u_char community[256]; - int community_length = 256; - struct variable_list *vp = 0; - oid objid[MAX_NAME_LEN], *op; - u_char *origdata = data; - int origlength = length; - int ret = 0; - u_char *save_data; - - /* authenticates message and returns length if valid */ - data = snmp_auth_parse(data, &length, community, &community_length, &version); - if (data == NULL) - return -1; - - if( version != SNMP_VERSION_1 && version != SNMP_VERSION_2C && version != SNMP_VERSION_2 ) { - fprintf(stderr, "Wrong version: %ld\n", version); - return -1; - } - - save_data = data; - - data = asn_parse_header(data, &length, &msg_type); - if (data == NULL) - return -1; - pdu->command = msg_type; - - if( session->authenticator ) { - ret = session->authenticator( origdata, origlength, save_data - community_length, - community_length, session, pdu ); - if( ret < 0 ) return ret; - } - - if (pdu->command != TRP_REQ_MSG){ - data = asn_parse_int(data, &length, &type, (long *)&pdu->reqid, sizeof(pdu->reqid)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->errstat, sizeof(pdu->errstat)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->errindex, sizeof(pdu->errindex)); - if (data == NULL) - return -1; - } else { - pdu->enterprise_length = MAX_NAME_LEN; - data = asn_parse_objid(data, &length, &type, objid, &pdu->enterprise_length); - if (data == NULL) - return -1; - pdu->enterprise = (oid *)calloc(1, pdu->enterprise_length * sizeof(oid)); - bcopy((char *)objid, (char *)pdu->enterprise, pdu->enterprise_length * sizeof(oid)); - - four = 4; - data = asn_parse_string(data, &length, &type, (u_char *)&pdu->agent_addr.sin_addr.s_addr, &four); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->trap_type, sizeof(pdu->trap_type)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->specific_type, sizeof(pdu->specific_type)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->time, sizeof(pdu->time)); - if (data == NULL) - return -1; - } - data = asn_parse_header(data, &length, &type); - if (data == NULL) - return -1; - if (type != (u_char)(ASN_SEQUENCE | ASN_CONSTRUCTOR)) - return -1; - while((int)length > 0){ - if (pdu->variables == NULL){ - pdu->variables = vp = (struct variable_list *)calloc(1, sizeof(struct variable_list)); - } else { - vp->next_variable = (struct variable_list *)calloc(1, sizeof(struct variable_list)); - vp = vp->next_variable; - } - vp->next_variable = NULL; - vp->val.string = NULL; - vp->name = NULL; - vp->name_length = MAX_NAME_LEN; - data = snmp_parse_var_op(data, objid, &vp->name_length, &vp->type, &vp->val_len, &var_val, (int *)&length); - if (data == NULL) - return -1; - op = (oid *)calloc(1, (unsigned)vp->name_length * sizeof(oid)); - bcopy((char *)objid, (char *)op, vp->name_length * sizeof(oid)); - vp->name = op; - - len = PACKET_LENGTH; - switch((short)vp->type){ - case ASN_INTEGER: - vp->val.integer = (long *)calloc(1, sizeof(long)); - vp->val_len = sizeof(long); - asn_parse_int(var_val, &len, &vp->type, (long *)vp->val.integer, sizeof(vp->val.integer)); - break; - case COUNTER: - case GAUGE: - case TIMETICKS: - case UINTEGER: - vp->val.integer = (long *)calloc(1, sizeof(unsigned long)); - vp->val_len = sizeof(unsigned long); - asn_parse_unsigned_int(var_val, &len, &vp->type, (unsigned long *)vp->val.integer, sizeof(vp->val.integer)); - break; - case COUNTER64: - vp->val.counter64 = (struct counter64 *)calloc(1, sizeof(struct counter64) ); - vp->val_len = sizeof(struct counter64); - asn_parse_unsigned_int64(var_val, &len, &vp->type, - (struct counter64 *)vp->val.counter64, - sizeof(*vp->val.counter64)); - break; - case ASN_OCTET_STR: - case IPADDRESS: - case OPAQUE: - case NSAP: - vp->val.string = (u_char *)calloc(1, (unsigned)vp->val_len); - asn_parse_string(var_val, &len, &vp->type, vp->val.string, &vp->val_len); - break; - case ASN_OBJECT_ID: - vp->val_len = MAX_NAME_LEN; - asn_parse_objid(var_val, &len, &vp->type, objid, &vp->val_len); - vp->val_len *= sizeof(oid); - vp->val.objid = (oid *)calloc(1, (unsigned)vp->val_len); - bcopy((char *)objid, (char *)vp->val.objid, vp->val_len); - break; - case SNMP_NOSUCHOBJECT: - case SNMP_NOSUCHINSTANCE: - case SNMP_ENDOFMIBVIEW: - case ASN_NULL: - break; - default: - fprintf(stderr, "bad type returned (%x)\n", vp->type); - break; - } - } - return ret; -} - -/* - * Sends the input pdu on the session after calling snmp_build to create - * a serialized packet. If necessary, set some of the pdu data from the - * session defaults. Add a request corresponding to this pdu to the list - * of outstanding requests on this session, then send the pdu. - * Returns the request id of the generated packet if applicable, otherwise 1. - * On any error, 0 is returned. - * The pdu is freed by snmp_send() unless a failure occured. - */ -int -snmp_send(session, pdu) - struct snmp_session *session; - struct snmp_pdu *pdu; -{ - struct session_list *slp; - struct snmp_internal_session *isp = NULL; - u_char packet[PACKET_LENGTH]; - int length = PACKET_LENGTH; - struct request_list *rp; - struct timeval tv; - - for(slp = Sessions; slp; slp = slp->next){ - if (slp->session == session){ - isp = slp->internal; - break; - } - } - - if (! pdu) { - snmp_errno = SNMPERR_GENERR; - return 0; - } - - if (isp == NULL){ - snmp_errno = SNMPERR_BAD_SESSION; - return 0; - } - if (pdu->command == GET_REQ_MSG || pdu->command == GETNEXT_REQ_MSG - || pdu->command == GET_RSP_MSG || pdu->command == SET_REQ_MSG - || pdu->command == GETBULK_REQ_MSG ){ - if (pdu->reqid == SNMP_DEFAULT_REQID) - pdu->reqid = ++Reqid; - if (pdu->errstat == SNMP_DEFAULT_ERRSTAT) - pdu->errstat = 0; - if (pdu->errindex == SNMP_DEFAULT_ERRINDEX) - pdu->errindex = 0; - } else { - /* fill in trap defaults */ - pdu->reqid = 1; /* give a bogus non-error reqid for traps */ - if (pdu->enterprise_length == SNMP_DEFAULT_ENTERPRISE_LENGTH){ - pdu->enterprise = (oid *)calloc(1, sizeof(DEFAULT_ENTERPRISE)); - bcopy((char *)DEFAULT_ENTERPRISE, (char *)pdu->enterprise, sizeof(DEFAULT_ENTERPRISE)); - pdu->enterprise_length = sizeof(DEFAULT_ENTERPRISE)/sizeof(oid); - } - if (pdu->time == SNMP_DEFAULT_TIME) - pdu->time = DEFAULT_TIME; - } - if (pdu->address.sin_addr.s_addr == SNMP_DEFAULT_ADDRESS){ - if (isp->addr.sin_addr.s_addr != SNMP_DEFAULT_ADDRESS){ - bcopy((char *)&isp->addr, (char *)&pdu->address, sizeof(pdu->address)); - } else { - fprintf(stderr, "No remote IP address specified\n"); - snmp_errno = SNMPERR_BAD_ADDRESS; - return 0; - } - } - - - if (snmp_build(session, pdu, packet, &length, 0) < 0){ - fprintf(stderr, "Error building packet\n"); - snmp_errno = SNMPERR_GENERR; - return 0; - } -#if 1 /***/ - if (snmp_dump_packet) { - snmp_print_packet(packet, length, pdu->address, 1); - } -MUNITY, (char *)cp, session->community_len); - } - - /* Set up connections */ - sd = socket(AF_INET, SOCK_DGRAM, 0); - if (sd < 0){ - perror("socket"); - snmp_errno = SNMPERR_GENERR; - if (!snmp_close(session)){ - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", api_errstring(snmp_errno)); - exit(1); - } - return 0; - } - isp->sd = sd; - - if (session->peername != SNMP_DEFAULT_PEERNAME){ - if ((addr = inet_addr(session->peername)) != -1){ - bcopy((char *)&addr, (char *)&isp->addr.sin_addr, sizeof(isp->addr.sin_addr)); - } else { - hp = gethostbyname(session->peername); - if (hp == NULL){ - fprintf(stderr, "unknown host: %s\n", session->peername); - snmp_errno = SNMPERR_BAD_ADDRESS; - if (!snmp_close(session)){ - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", api_errstring(snmp_errno)); - exit(2); - } - return 0; - } else { - bcopy((char *)hp->h_addr, (char *)&isp->addr.sin_addr, hp->h_length); - } - } - isp->addr.sin_family = AF_INET; - if (session->remote_port == SNMP_DEFAULT_REMPORT){ - /*servp = getservbyname("snmp", "udp");*/ - servp=NULL; - if (servp != NULL){ - isp->addr.sin_port = servp->s_port; - } else { - isp->addr.sin_port = htons(SNMP_PORT); - } - } else { - isp->addr.sin_port = htons(session->remote_port); - } - } else { - isp->addr.sin_addr.s_addr = SNMP_DEFAULT_ADDRESS; - } - - me.sin_family = AF_INET; - me.sin_addr.s_addr = INADDR_ANY; - me.sin_port = htons(session->local_port); - if (bind(sd, (struct sockaddr *)&me, sizeof(me)) != 0){ - perror("bind"); - snmp_errno = SNMPERR_BAD_LOCPORT; - if (! snmp_close(session)){ - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", - api_errstring(snmp_errno)); - exit(3); - } - return 0; - } - - if( *cp == '/' ) { - session->authenticator = check_received_pkt; - sync_with_agent(session); - parse_app_community_string( session ); - session->qoS |= USEC_QOS_GENREPORT; - } - - /* replace comm pointer with pointer to new data: */ - session->community = cp; - - return session; -} - -void -sync_with_agent( session ) -struct snmp_session *session; -{ - struct snmp_pdu *pdu, *response = 0; - int status; - - session->qoS = USEC_QOS_GENREPORT; - session->userLen = 6; - session->version = SNMP_VERSION_2; - strcpy( session->userName, "public" ); - - snmp_synch_setup(session); - pdu = snmp_pdu_create(GET_REQ_MSG); - status = snmp_synch_response(session, pdu, &response); - - if (status == STAT_SUCCESS){ - memcpy( session->agentID, response->params.agentID, 12 ); - - /* save the clocks -- even though they are not authentic */ - session->agentBoots = response->params.agentBoots; - session->agentTime = response->params.agentTime; - session->agentClock = response->params.agentTime - time(NULL); - - } else { - if (status == STAT_TIMEOUT){ - printf("No Response from %s\n", session->peername); - } else { /* status == STAT_ERROR */ - printf("An error occurred, Quitting\n"); - } - exit( -1 ); - } - - /** freed to early: - snmp_free_pdu(pdu); - if (response) snmp_free_pdu(response); - **/ -} -#if 1 /***/ -/* - * Unlink one element from input request list, - * then free it and it's pdu. - */ -static void -free_one_request(isp, orp) - struct snmp_internal_session *isp; - struct request_list *orp; -{ - struct request_list *rp; - if(! orp) return; - if(isp->requests == orp){ - isp->requests = orp->next_request; /* unlink head */ - } - else{ - for(rp = isp->requests; rp; rp = rp->next_request){ - if(rp->next_request == orp){ - rp->next_request = orp->next_request; /* unlink element */ - break; - } - } - } - if (orp->pdu != NULL){ - snmp_free_pdu(orp->pdu); - } - free((char *)orp); -} -#endif /***/ -/* - * Free each element in the input request list. - */ -static void -free_request_list(rp) - struct request_list *rp; -{ - struct request_list *orp; - - while(rp){ - orp = rp; - rp = rp->next_request; - if (orp->pdu != NULL) - snmp_free_pdu(orp->pdu); - free((char *)orp); - } -} - -/* - * Close the input session. Frees all data allocated for the session, - * dequeues any pending requests, and closes any sockets allocated for - * the session. Returns 0 on error, 1 otherwise. - */ -int -snmp_close(session) - struct snmp_session *session; -{ - struct session_list *slp = NULL, *oslp = NULL; - - if (Sessions->session == session){ /* If first entry */ - slp = Sessions; - Sessions = slp->next; - } else { - for(slp = Sessions; slp; slp = slp->next){ - if (slp->session == session){ - if (oslp) /* if we found entry that points here */ - oslp->next = slp->next; /* link around this entry */ - break; - } - oslp = slp; - } - } - /* If we found the session, free all data associated with it */ - if (slp){ - if (slp->session->community != NULL) - free((char *)slp->session->community); - if(slp->session->peername != NULL) - free((char *)slp->session->peername); - free((char *)slp->session); - if (slp->internal->sd != -1) - close(slp->internal->sd); - free_request_list(slp->internal->requests); - free((char *)slp->internal); - free((char *)slp); - } else { - snmp_errno = SNMPERR_BAD_SESSION; - return 0; - } - return 1; -} - -/* - * Takes a session and a pdu and serializes the ASN PDU into the area - * pointed to by packet. out_length is the size of the data area available. - * Returns the length of the completed packet in out_length. If any errors - * occur, -1 is returned. If all goes well, 0 is returned. - */ -int -snmp_build(session, pdu, packet, out_length, is_agent) - struct snmp_session *session; - struct snmp_pdu *pdu; - u_char *packet; - int *out_length; - int is_agent; -{ - u_char buf[PACKET_LENGTH]; - u_char *cp; - struct variable_list *vp; - int length; - int totallength; - - length = *out_length; - cp = packet; - for(vp = pdu->variables; vp; vp = vp->next_variable){ - cp = snmp_build_var_op(cp, vp->name, &vp->name_length, vp->type, vp->val_len, (u_char *)vp->val.string, &length); - if (cp == NULL) - return -1; - } - totallength = cp - packet; - - length = PACKET_LENGTH; - cp = asn_build_header(buf, &length, (u_char)(ASN_SEQUENCE | ASN_CONSTRUCTOR), totallength); - if (cp == NULL) - return -1; - bcopy((char *)packet, (char *)cp, totallength); - totallength += cp - buf; - - length = *out_length; - if (pdu->command != TRP_REQ_MSG){ - /* request id */ - cp = asn_build_int(packet, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->reqid, sizeof(pdu->reqid)); - if (cp == NULL) - return -1; - /* error status */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->errstat, sizeof(pdu->errstat)); - if (cp == NULL) - return -1; - /* error index */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->errindex, sizeof(pdu->errindex)); - if (cp == NULL) - return -1; - } else { /* this is a trap message */ - /* enterprise */ - cp = asn_build_objid(packet, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_OBJECT_ID), - (oid *)pdu->enterprise, pdu->enterprise_length); - if (cp == NULL) - return -1; - /* agent-addr */ - cp = asn_build_string(cp, &length, (u_char)IPADDRESS, - (u_char *)&pdu->agent_addr.sin_addr.s_addr, sizeof(pdu->agent_addr.sin_addr.s_addr)); - if (cp == NULL) - return -1; - /* generic trap */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->trap_type, sizeof(pdu->trap_type)); - if (cp == NULL) - return -1; - /* specific trap */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->specific_type, sizeof(pdu->specific_type)); - if (cp == NULL) - return -1; - /* timestamp */ - cp = asn_build_int(cp, &length, (u_char)TIMETICKS, - (long *)&pdu->time, sizeof(pdu->time)); - if (cp == NULL) - return -1; - } - if (length < totallength) - return -1; - bcopy((char *)buf, (char *)cp, totallength); - totallength += cp - packet; - - length = PACKET_LENGTH; - cp = asn_build_header(buf, &length, (u_char)pdu->command, totallength); - if (cp == NULL) - return -1; - if (length < totallength) - return -1; - bcopy((char *)packet, (char *)cp, totallength); - totallength += cp - buf; - - length = *out_length; - - cp = snmp_auth_build( packet, &length, session, is_agent, totallength ); - if (cp == NULL) - return -1; - if ((*out_length - (cp - packet)) < totallength) - return -1; - bcopy((char *)buf, (char *)cp, totallength); - totallength += cp - packet; - *out_length = totallength; - - if( session->qoS & USEC_QOS_AUTH ) - md5Digest( packet, totallength, cp - (session->contextLen + 16), - cp - (session->contextLen + 16) ); - - return 0; -} - -/* - * Parses the packet received on the input session, and places the data into - * the input pdu. length is the length of the input packet. If any errors - * are encountered, -1 is returned. Otherwise, a 0 is returned. - */ -static int -snmp_parse(session, pdu, data, length) - struct snmp_session *session; - structBÐ+= m -È /* */ B>XNMPTÊ */cfor testing purposes */e key! replace... - */ - * ÿ¯ùsnmplib/snmp_api.cc.hÿ°…<Ðlib/snmp_api.c~~ñÿ±<ðÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±«=ÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²=0ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²Š=Pÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ³ -=pÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³‚ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×Áÿ³ùÿ´=ø%D(ÿ´_=à\BØÿ´©=˜4BØÿ´ø=ÈHBØÿµB>ÿµ]ÿµmÿµzÿµ >(ÿµ·ÿµÉÿµÖÿµï>@ÿ¶ÿ¶ ÿ¶4ÿ¶Pÿ¶rÿ¶~ÿ¶ˆ0ÿ¶Ÿ4¨ÿ¶·ÿ¶Ù‰èÿ·ÿ·#ÿ·/ÿ·>>Xÿ·V3/usr/people/wessels/.indent.proÿ¯èÿ¯ùÿ° ÿ°ÿ°.ÿ°?ÿ°Mÿ°[ÿ°pÿ°…ÿ°•ÿ°£ÿ°²ÿ°Åÿ°Ûÿ°ñÿ± -ÿ±ÿ±2ÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±™ÿ±«ÿ±ºÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²ÿ²ÿ²2ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²ÿ²Šÿ²™ÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ²öÿ³ -ÿ³ ÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³sÿ³‚ÿ³‘ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×ÿ³çÿ³ùÿ´ÿ´ÿ´ÿ´)ÿ´3ÿ´Cÿ´Oÿ´_ÿ´kÿ´tÿ´ÿ´ÿ´Ÿÿ´©ÿ´·ÿ´Åÿ´Òÿ´Ýÿ´íÿ´øÿµÿµÿµÿµ)ÿµ7ÿµBÿµMÿµ]ÿµmÿµzÿµ‰ÿµ ÿµ«ÿµ·ÿµÉÿµÖÿµâÿµïÿ¶ÿ¶ÿ¶ ÿ¶4ÿ¶?ÿ¶Pÿ¶bÿ¶rÿ¶~ÿ¶ˆÿ¶”ÿ¶Ÿÿ¶«ÿ¶·ÿ¶Éÿ¶Ùÿ¶íÿ·ÿ·ÿ·#ÿ·/ÿ·>ÿ·Lÿ·Vÿ·fÿ·q°>X 4¨ $  @,2ˆ…>X‚àC Ž0   ¸ude/snmp_groupvars.h~ àude/snmp_groupvars.h ŽX Ž€ Ž¨ ŽÐ „©/*********************************************************** - Copyright 1989 by Carnegie Mellon University - - All Rights Reserved - -Permission to use, copy, modify, and distribute this software and its -documentation for any purpose and without fee is hereby granted, -provided that the above copyright notice appear in all copies and that -both that copyright notice and this permission notice appear in -supporting documentation, and that the name of CMU not be -used in advertising or publicity pertaining to distribution of the -software without specific, written prior permission. - -CMU DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING -ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL -CMU BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR -ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, -WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, -ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS -SOFTWARE. -******************************************************************/ -/* - * snmp_api.c - API for access to snmp. - */ -#define DEBUG_SNMPTRACE 0 /* set to 1 to print all SNMP actions */ -#define DEBUG_SNMPFULLDUMP 0 /* set to 1 to dump all SNMP packets */ - -#include -#include -#include -#include -#include -#include -#include -#ifdef linux -#include -#include -#include -#include -#endif - - -#include "asn1.h" -#include "snmp.h" -#include "snmp_impl.h" -#include "snmp_api.h" -#include "snmp_client.h" - -#define PACKET_LENGTH 4500 - -#ifndef BSD4_3 -#define BSD4_2 -#endif - -#if !defined(BSD4_3) && !defined(linux) && !defined(sun) - -typedef long fd_mask; -#define NFDBITS (sizeof(fd_mask) * NBBY) /* bits per mask */ - -#define FD_SET(n, p) ((p)->fds_bits[(n)/NFDBITS] |= (1 << ((n) % NFDBITS))) -#define FD_CLR(n, p) ((p)->fds_bits[(n)/NFDBITS] &= ~(1 << ((n) % NFDBITS))) -#define FD_ISSET(n, p) ((p)->fds_bits[(n)/NFDBITS] & (1 << ((n) % NFDBITS))) -#define FD_ZERO(p) bzero((char *)(p), sizeof(*(p))) -#endif - -oid default_enterprise[] = {1, 3, 6, 1, 4, 1, 3, 1, 1}; /* enterprises.cmu.systems.cmuSNMP */ - -#define DEFAULT_COMMUNITY "public" -#define DEFAULT_REMPORT SNMP_PORT -#define DEFAULT_ENTERPRISE default_enterprise -#define DEFAULT_TIME 0 -#define DEFAULT_MMS 1389 /* large, randomly picked for testing purposes */ - -/* - * Internal information about the state of the snmp session. - */ -struct snmp_internal_session { - int sd; /* socket descriptor for this connection */ - ipaddr addr; /* address of connected peer */ - struct request_list *requests;/* Info about outstanding requests */ -}; - -/* - * A list of all the outstanding requests for a particular session. - */ -struct request_list { - struct request_list *next_request; - u_long request_id; /* request id */ - int retries; /* Number of retries */ - u_long timeout; /* length to wait for timeout */ - struct timeval time; /* Time this request was made */ - struct timeval expire; /* time this request is due to expire */ - struct snmp_pdu *pdu; /* The pdu for this request (saved so it can be retransmitted */ -}; - -/* - * The list of active/open sessions. - */ -struct session_list { - struct session_list *next; - struct snmp_session *session; - struct snmp_internal_session *internal; -}; - -struct session_list *Sessions = NULL; - -u_long Reqid = 0; -int snmp_errno = 0; - -char *api_errors[4] = { - "Unknown session", - "Unknown host", - "Invalid local port", - "Unknown Error" -}; - - -void sync_with_agent(); -int parse_app_community_string(); -void snmp_synch_setup(); -int snmp_synch_response(); -void md5Digest(); - - -static char * -api_errstring(snmp_errnumber) - int snmp_errnumber; -{ - if (snmp_errnumber <= SNMPERR_BAD_SESSION && snmp_errnumber >= SNMPERR_GENERR){ - return api_errors[snmp_errnumber + 4]; - } else { - return "Unknown Error"; - } -} - -#if 0 -/* - * Gets initial request ID for all transactions. - */ -static void -init_snmp(){ - struct timeval tv; - - gettimeofday(&tv, (struct timezone *)0); - srandom(tv.tv_sec ^ tv.tv_usec); - Reqid = random(); -} -#endif - - -/* - * Dump snmp packet to stdout: - */ -static void -snmp_print_packet(packet, length, addr, code) - char *packet; - int length; - ipaddr addr; - int code; -{ - if(length < 0) { - return; - } - if (code <= 0) { /* received */ - printf("\nReceived %4d bytes from ", length); - } - else { /* sending */ - printf("\nSending %4d bytes to ", length); - } - printf("%s:", inet_ntoa(addr.sin_addr)); -#if DEBUG_SNMPFULLDUMP - for (count = 0; count < length; count++) { - if ((count & 15) == 0) { - printf("\n "); - } - printf("%02X ", (int)(packet[count]&255)); - } -#endif - fflush(stdout); -} - -#if DEBUG_SNMPTRACE -/* - * Print request - */ -#define TRACE_SEND (0) -#define TRACE_RECV (1) -#define TRACE_TIMEOUT (2) -static void -snmp_print_trace(slp, rp, code) - struct session_list *slp; - struct request_list *rp; - int code; -{ - int reqid=0, retries=1; - if( rp ){ - reqid = rp->request_id; - retries = rp->retries; - } - printf("\n Session %2d ReqId %4d ", slp->internal->sd, reqid); - switch(code) - { - case TRACE_SEND: printf("send pdu (%d)", retries);break; - case TRACE_RECV: printf("recv pdu");break; - case TRACE_TIMEOUT: printf("time out");break; - } - fflush(stdout); -} -#endif /* DEBUG_SNMPTRACE */ - - - - -/* - * Sets up the session with the snmp_session information provided - * by the user. Then opens and binds the necessary UDP port. - * A handle to the created session is returned (this is different than - * the pointer passed to snmp_open()). On any error, NULL is returned - * and snmp_errno is set to the appropriate error code. - */ -struct snmp_session * -snmp_open(session) - struct snmp_session *session; -{ - struct session_list *slp; - struct snmp_internal_session *isp; - u_char *cp; - int sd; - u_long addr; - struct sockaddr_in me; - struct hostent *hp; - struct servent *servp; - extern int check_received_pkt(); - - /* Copy session structure and link into list */ - slp = (struct session_list *)calloc(1, sizeof(struct session_list)); - slp->internal = isp = (struct snmp_internal_session *)calloc(1, sizeof(struct snmp_internal_session)); - bzero((char *)isp, sizeof(struct snmp_internal_session)); - slp->internal->sd = -1; /* mark it not set */ - slp->session = (struct snmp_session *)calloc(1, sizeof(struct snmp_session)); - bcopy((char *)session, (char *)slp->session, sizeof(struct snmp_session)); - session = slp->session; - /* now link it in. */ - slp->next = Sessions; - Sessions = slp; - - /* - * session now points to the new structure that still contains pointers to - * data allocated elsewhere. Some of this data is copied to space malloc'd - * here, and the pointer replaced with the new one. - */ - - if (session->peername != NULL){ - cp = (u_char *)calloc(1, (unsigned)strlen(session->peername) + 1); - strcpy((char *)cp, session->peername); - session->peername = (char *)cp; - } - - if (session->retries == SNMP_DEFAULT_RETRIES) - session->retries = SNMP_API_DEFAULT_RETRIES; - if (session->timeout == SNMP_DEFAULT_TIMEOUT) - session->timeout = SNMP_API_DEFAULT_TIMEOUT; - if (session->MMS == 0 ) - session->MMS = DEFAULT_MMS; - isp->requests = NULL; - - - /* Fill in defaults if necessary */ - if (session->community_len != SNMP_DEFAULT_COMMUNITY_LEN){ - if( *session->community == '+' ) { - session->community_len--; - cp = (u_char *) calloc(1, (unsigned) session->community_len); - bcopy((char *) session->community+1, (char *)cp, - session->community_len); - session->version = SNMP_VERSION_2C; - } else { - cp = (u_char *) calloc(1, (unsigned) session->community_len); - bcopy((char *) session->community, (char *) cp, - session->community_len); - } - - } else { - session->community_len = strlen(DEFAULT_COMMUNITY); - cp = (u_char *)calloc(1, (unsigned)session->community_len); - bcopy((char *)DEFAULT_COMMUNITY, (char *)cp, session->community_len); - } - - /* Set up connections */ - sd = socket(AF_INET, SOCK_DGRAM, 0); - if (sd < 0){ - perror("socket"); - snmp_errno = SNMPERR_GENERR; - if (!snmp_close(session)){ - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", api_errstring(snmp_errno)); - exit(1); - } - return 0; - } - isp->sd = sd; - - if (session->peername != SNMP_DEFAULT_PEERNAME){ - if ((addr = inet_addr(session->peername)) != -1){ - bcopy((char *)&addr, (char *)&isp->addr.sin_addr, sizeof(isp->addr.sin_addr)); - } else { - hp = gethostbyname(session->peername); - if (hp == NULL){ - fprintf(stderr, "unknown host: %s\n", session->peername); - snmp_errno = SNMPERR_BAD_ADDRESS; - if (!snmp_close(session)){ - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", api_errstring(snmp_errno)); - exit(2); - } - return 0; - } else { - bcopy((char *)hp->h_addr, (char *)&isp->addr.sin_addr, hp->h_length); - } - } - isp->addr.sin_family = AF_INET; - if (session->remote_port == SNMP_DEFAULT_REMPORT){ - /*servp = getservbyname("snmp", "udp");*/ - servp=NULL; - if (servp != NULL){ - isp->addr.sin_port = servp->s_port; - } else { - isp->addr.sin_port = htons(SNMP_PORT); - } - } else { - isp->addr.sin_port = htons(session->remote_port); - } - } else { - isp->addr.sin_addr.s_addr = SNMP_DEFAULT_ADDRESS; - } - - me.sin_family = AF_INET; - me.sin_addr.s_addr = INADDR_ANY; - me.sin_port = htons(session->local_port); - if (bind(sd, (struct sockaddr *)&me, sizeof(me)) != 0){ - perror("bind"); - snmp_errno = SNMPERR_BAD_LOCPORT; - if (! snmp_close(session)){ - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", - api_errstring(snmp_errno)); - exit(3); - } - return 0; - } - - if( *cp == '/' ) { - session->authenticator = check_received_pkt; - sync_with_agent(session); - parse_app_community_string( session ); - session->qoS |= USEC_QOS_GENREPORT; - } - - /* replace comm pointer with pointer to new data: */ - session->community = cp; - - return session; -} - -void -sync_with_agent( session ) -struct snmp_session *session; -{ - struct snmp_pdu *pdu, *response = 0; - int status; - - session->qoS = USEC_QOS_GENREPORT; - session->userLen = 6; - session->version = SNMP_VERSION_2; - strcpy( session->userName, "public" ); - - snmp_synch_setup(session); - pdu = snmp_pdu_create(GET_REQ_MSG); - status = snmp_synch_response(session, pdu, &response); - - if (status == STAT_SUCCESS){ - memcpy( session->agentID, response->params.agentID, 12 ); - - /* save the clocks -- even though they are not authentic */ - session->agentBoots = response->params.agentBoots; - session->agentTime = response->params.agentTime; - session->agentClock = response->params.agentTime - time(NULL); - - } else { - if (status == STAT_TIMEOUT){ - printf("No Response from %s\n", session->peername); - } else { /* status == STAT_ERROR */ - printf("An error occurred, Quitting\n"); - } - exit( -1 ); - } - - /** freed to early: - snmp_free_pdu(pdu); - if (response) snmp_free_pdu(response); - **/ -} -#if 1 /***/ -/* - * Unlink one element from input request list, - * then free it and it's pdu. - */ -static void -free_one_request(isp, orp) - struct snmp_internal_session *isp; - struct request_list *orp; -{ - struct request_list *rp; - if(! orp) return; - if(isp->requests == orp){ - isp->requests = orp->next_request; /* unlink head */ - } - else{ - for(rp = isp->requests; rp; rp = rp->next_request){ - if(rp->next_request == orp){ - rp->next_request = orp->next_request; /* unlink element */ - break; - } - } - } - if (orp->pdu != NULL){ - snmp_free_pdu(orp->pdu); - } - free((char *)orp); -} -#endif /***/ -/* - * Free each element in the input request list. - */ -static void -free_request_list(rp) - struct request_list *rp; -{ - struct request_list *orp; - - while(rp){ - orp = rp; - rp = rp->next_request; - if (orp->pdu != NULL) - snmp_free_pdu(orp->pdu); - free((char *)orp); - } -} - -/* - * Close the input session. Frees all data allocated for the session, - * dequeues any pending requests, and closes any sockets allocated for - * the session. Returns 0 on error, 1 otherwise. - */ -int -snmp_close(session) - struct snmp_session *session; -{ - struct session_list *slp = NULL, *oslp = NULL; - - if (Sessions->session == session){ /* If first entry */ - slp = Sessions; - Sessions = slp->next; - } else { - for(slp = Sessions; slp; slp = slp->next){ - if (slp->session == session){ - if (oslp) /* if we found entry that points here */ - oslp->next = slp->next; /* link around this entry */ - break; - } - oslp = slp; - } - } - /* If we found the session, free all data associated with it */ - if (slp){ - if (slp->session->community != NULL) - free((char *)slp->session->community); - if(slp->session->peername != NULL) - free((char *)slp->session->peername); - free((char *)slp->session); - if (slp->internal->sd != -1) - close(slp->internal->sd); - free_request_list(slp->internal->requests); - free((char *)slp->internal); - free((char *)slp); - } else { - snmp_errno = SNMPERR_BAD_SESSION; - return 0; - } - return 1; -} - -/* - * Takes a session and a pdu and serializes the ASN PDU into the area - * pointed to by packet. out_length is the size of the data area available. - * Returns the length of the completed packet in out_length. If any errors - * occur, -1 is returned. If all goes well, 0 is returned. - */ -int -snmp_build(session, pdu, packet, out_length, is_agent) - struct snmp_session *session; - struct snmp_pdu *pdu; - u_char *packet; - int *out_length; - int is_agent; -{ - u_char buf[PACKET_LENGTH]; - u_char *cp; - struct variable_list *vp; - int length; - int totallength; - - length = *out_length; - cp = packet; - for(vp = pdu->variables; vp; vp = vp->next_variable){ - cp = snmp_build_var_op(cp, vp->name, &vp->name_length, vp->type, vp->val_len, (u_char *)vp->val.string, &length); - if (cp == NULL) - return -1; - } - totallength = cp - packet; - - length = PACKET_LENGTH; - cp = asn_build_header(buf, &length, (u_char)(ASN_SEQUENCE | ASN_CONSTRUCTOR), totallength); - if (cp == NULL) - return -1; - bcopy((char *)packet, (char *)cp, totallength); - totallength += cp - buf; - - length = *out_length; - if (pdu->command != TRP_REQ_MSG){ - /* request id */ - cp = asn_build_int(packet, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->reqid, sizeof(pdu->reqid)); - if (cp == NULL) - return -1; - /* error status */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->errstat, sizeof(pdu->errstat)); - if (cp == NULL) - return -1; - /* error index */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->errindex, sizeof(pdu->errindex)); - if (cp == NULL) - return -1; - } else { /* this is a trap message */ - /* enterprise */ - cp = asn_build_objid(packet, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_OBJECT_ID), - (oid *)pdu->enterprise, pdu->enterprise_length); - if (cp == NULL) - return -1; - /* agent-addr */ - cp = asn_build_string(cp, &length, (u_char)IPADDRESS, - (u_char *)&pdu->agent_addr.sin_addr.s_addr, sizeof(pdu->agent_addr.sin_addr.s_addr)); - if (cp == NULL) - return -1; - /* generic trap */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->trap_type, sizeof(pdu->trap_type)); - if (cp == NULL) - return -1; - /* specific trap */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->specific_type, sizeof(pdu->specific_type)); - if (cp == NULL) - return -1; - /* timestamp */ - cp = asn_build_int(cp, &length, (u_char)TIMETICKS, - (long *)&pdu->time, sizeof(pdu->time)); - if (cp == NULL) - return -1; - } - if (length < totallength) - return -1; - bcopy((char *)buf, (char *)cp, totallength); - totallength += cp - packet; - - length = PACKET_LENGTH; - cp = asn_build_header(buf, &length, (u_char)pdu->command, totallength); - if (cp == NULL) - return -1; - if (length < totallength) - return -1; - bcopy((char *)packet, (char *)cp, totallength); - totallength += cp - buf; - - length = *out_length; - - cp = snmp_auth_build( packet, &length, session, is_agent, totallength ); - if (cp == NULL) - return -1; - if ((*out_length - (cp - packet)) < totallength) - return -1; - bcopy((char *)buf, (char *)cp, totallength); - totallength += cp - packet; - *out_length = totallength; - - if( session->qoS & USEC_QOS_AUTH ) - md5Digest( packet, totallength, cp - (session->contextLen + 16), - cp - (session->contextLen + 16) ); - - return 0; -} - -/* - * Parses the packet received on the input session, and places the data into - * the input pdu. length is the length of the input packet. If any errors - * are encountered, -1 is returned. Otherwise, a 0 is returned. - */ -static int -snmp_parse(session, pdu, data, length) - struct snmp_session *session; - struct snmp_pdu *pdu; - u_char *data; - int length; -{ - u_char msg_type; - u_char type; - u_char *var_val; - long version; - int len, four; - u_char community[256]; - int community_length = 256; - struct variable_list *vp = 0; - oid objid[MAX_NAME_LEN], *op; - u_char *origdata = data; - int origlength = length; - int ret = 0; - u_char *save_data; - - /* authenticates message and returns length if valid */ - data = snmp_auth_parse(data, &length, community, &community_length, &version); - if (data == NULL) - return -1; - - if( version != SNMP_VERSION_1 && version != SNMP_VERSION_2C && version != SNMP_VERSION_2 ) { - fprintf(stderr, "Wrong version: %ld\n", version); - return -1; - } - - save_data = data; - - data = asn_parse_header(data, &length, &msg_type); - if (data == NULL) - return -1; - pdu->command = msg_type; - - if( session->authenticator ) { - ret = session->authenticator( origdata, origlength, save_data - community_length, - community_length, session, pdu ); - if( ret < 0 ) return ret; - } - - if (pdu->command != TRP_REQ_MSG){ - data = asn_parse_int(data, &length, &type, (long *)&pdu->reqid, sizeof(pdu->reqid)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->errstat, sizeof(pdu->errstat)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->errindex, sizeof(pdu->errindex)); - if (data == NULL) - return -1; - } else { - pdu->enterprise_length = MAX_NAME_LEN; - data = asn_parse_objid(data, &length, &type, objid, &pdu->enterprise_length); - if (data == NULL) - return -1; - pdu->enterprise = (oid *)calloc(1, pdu->enterprise_length * sizeof(oid)); - bcopy((char *)objid, (char *)pdu->enterprise, pdu->enterprise_length * sizeof(oid)); - - four = 4; - data = asn_parse_string(data, &length, &type, (u_char *)&pdu->agent_addr.sin_addr.s_addr, &four); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->trap_type, sizeof(pdu->trap_type)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->specific_type, sizeof(pdu->specific_type)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->time, sizeof(pdu->time)); - if (data == NULL) - return -1; - } - data = asn_parse_header(data, &length, &type); - if (data == NULL) - return -1; - if (type != (u_char)(ASN_SEQUENCE | ASN_CONSTRUCTOR)) - return -1; - while((int)length > 0){ - if (pdu->variables == NULL){ - pdu->variables = vp = (struct variable_list *)calloc(1, sizeof(struct variable_list)); - } else { - vp->next_variable = (struct variable_list *)calloc(1, sizeof(struct variable_list)); - vp = vp->next_variable; - } - vp->next_variable = NULL; - vp->val.string = NULL; - vp->name = NULL; - vp->name_length = MAX_NAME_LEN; - data = snmp_parse_var_op(data, objid, &vp->name_length, &vp->type, &vp->val_len, &var_val, (int *)&length); - if (data == NULL) - return -1; - op = (oid *)calloc(1, (unsigned)vp->name_length * sizeof(oid)); - bcopy((char *)objid, (char *)op, vp->name_length * sizeof(oid)); - vp->name = op; - - len = PACKET_LENGTH; - switch((short)vp->type){ - case ASN_INTEGER: - vp->val.integer = (long *)calloc(1, sizeof(long)); - vp->val_len = sizeof(long); - asn_parse_int(var_val, &len, &vp->type, (long *)vp->val.integer, sizeof(vp->val.integer)); - break; - case COUNTER: - case GAUGE: - case TIMETICKS: - case UINTEGER: - vp->val.integer = (long *)calloc(1, sizeof(unsigned long)); - vp->val_len = sizeof(unsigned long); - asn_parse_unsigned_int(var_val, &len, &vp->type, (unsigned long *)vp->val.integer, sizeof(vp->val.integer)); - break; - case COUNTER64: - vp->val.counter64 = (struct counter64 *)calloc(1, sizeof(struct counter64) ); - vp->val_len = sizeof(struct counter64); - asn_parse_unsigned_int64(var_val, &len, &vp->type, - (struct counter64 *)vp->val.counter64, - sizeof(*vp->val.counter64)); - break; - case ASN_OCTET_STR: - case IPADDRESS: - case OPAQUE: - case NSAP: - vp->val.string = (u_char *)calloc(1, (unsigned)vp->val_len); - asn_parse_string(var_val, &len, &vp->type, vp->val.string, &vp->val_len); - break; - case ASN_OBJECT_ID: - vp->val_len = MAX_NAME_LEN; - asn_parse_objid(var_val, &len, &vp->type, objid, &vp->val_len); - vp->val_len *= sizeof(oid); - vp->val.objid = (oid *)calloc(1, (unsigned)vp->val_len); - bcopy((char *)objid, (char *)vp->val.objid, vp->val_len); - break; - case SNMP_NOSUCHOBJECT: - case SNMP_NOSUCHINSTANCE: - case SNMP_ENDOFMIBVIEW: - case ASN_NULL: - break; - default: - fprintf(stderr, "bad type returned (%x)\n", vp->type); - break; - } - } - return ret; -} - -/* - * Sends the input pdu on the session after calling snmp_build to create - * a serialized packet. If necessary, set some of the pdu data from the - * session defaults. Add a request corresponding to this pdu to the list - * of outstanding requests on this session, then send the pdu. - * Returns the request id of the generated packet if applicable, otherwise 1. - * On any error, 0 is returned. - * The pdu is freed by snmp_send() unless a failure occured. - */ -int -snmp_send(session, pdu) - struct snmp_session *session; - struct snmp_pdu *pdu; -{ - struct session_list *slp; - struct snmp_internal_session *isp = NULL; - u_char packet[PACKET_LENGTH]; - int length = PACKET_LENGTH; - struct request_list *rp; - struct timeval tv; - - for(slp = Sessions; slp; slp = slp->next){ - if (slp->session == session){ - isp = slp->internal; - break; - } - } - - if (! pdu) { - snmp_errno = SNMPERR_GENERR; - return 0; - } - - if (isp == NULL){ - snmp_errno = SNMPERR_BAD_SESSION; - return 0; - } - if (pdu->command == GET_REQ_MSG || pdu->command == GETNEXT_REQ_MSG - || pdu->command == GET_RSP_MSG || pdu->command == SET_REQ_MSG - || pdu->command == GETBULK_REQ_MSG ){ - if (pdu->reqid == SNMP_DEFAULT_REQID) - pdu->reqid = ++Reqid; - if (pdu->errstat == SNMP_DEFAULT_ERRSTAT) - pdu->errstat = 0; - if (pdu->errindex == SNMP_DEFAULT_ERRINDEX) - pdu->errindex = 0; - } else { - /* fill in trap defaults */ - pdu->reqid = 1; /* give a bogus non-error reqid for traps */ - if (pdu->enterprise_length == SNMP_DEFAULT_ENTERPRISE_LENGTH){ - pdu->enterprise = (oid *)calloc(1, sizeof(DEFAULT_ENTERPRISE)); - bcopy((char *)DEFAULT_ENTERPRISE, (char *)pdu->enterprise, sizeof(DEFAULT_ENTERPRISE)); - pdu->enterprise_length = sizeof(DEFAULT_ENTERPRISE)/sizeof(oid); - } - if (pdu->time == SNMP_DEFAULT_TIME) - pdu->time = DEFAULT_TIME; - } - if (pdu->address.sin_addr.s_addr == SNMP_DEFAULT_ADDRESS){ - if (isp->addr.sin_addr.s_addr != SNMP_DEFAULT_ADDRESS){ - bcopy((char *)&isp->addr, (char *)&pdu->address, sizeof(pdu->address)); - } else { - fprintf(stderr, "No remote IP address specified\n"); - snmp_errno = SNMPERR_BAD_ADDRESS; - return 0; - } - } - - - if (snmp_build(session, pdu, packet, &length, 0) < 0){ - fprintf(stderr, "Error building packet\n"); - snmp_errno = SNMPERR_GENERR; - return 0; - } -#if 1 /***/ - if (snmp_dump_packet){ - snmp_print_packet(packet, length, pdu->address, 1); - } -#endif /***/ - - gettimeofday(&tv, (struct timezone *) 0); - if (sendto(isp->sd, (char *) packet, length, 0, (struct sockaddr *) &pdu->address, sizeof(pdu->address)) < 0) { - perror("sendto"); - snmp_errno = SNMPERR_GENERR; - return 0; - } - if (pdu->command == GET_REQ_MSG || pdu->command == GETNEXT_REQ_MSG - || pdu->command == SET_REQ_MSG || pdu->command == GETBULK_REQ_MSG) { - /* set up to expect a response */ - rp = (struct request_list *) calloc(1, sizeof(struct request_list)); -#if 1/***/ if we found entry that points here */ - oslp e key! replace... - */ - * ÿ¯ùsnmplib/snmp_api.cc.hÿ°…<Ðlib/snmp_api.c~~ñÿ±<ðÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±«=ÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²=0ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²Š=Pÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ³ -=pÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³‚ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×Áÿ³ùÿ´=ø%D(ÿ´_=à\BØÿ´©=˜4BØÿ´ø=ÈHBØÿµB>ÿµ]ÿµmÿµzÿµ >(ÿµ·ÿµÉÿµÖÿµï>@ÿ¶ÿ¶ ÿ¶4ÿ¶Pÿ¶rÿ¶~ÿ¶ˆ0ÿ¶Ÿÿ¶·ÿ¶Ù4¨ÿ·ÿ·#ÿ·/ÿ·>>Xÿ·V3/usr/people/wessels/.indent.proÿ¯èÿ¯ùÿ° ÿ°ÿ°.ÿ°?ÿ°Mÿ°[ÿ°pÿ°…ÿ°•ÿ°£ÿ°²ÿ°Åÿ°Ûÿ°ñÿ± -ÿ±ÿ±2ÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±™ÿ±«ÿ±ºÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²ÿ²ÿ²2ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²ÿ²Šÿ²™ÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ²öÿ³ -ÿ³ ÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³sÿ³‚ÿ³‘ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×ÿ³çÿ³ùÿ´ÿ´ÿ´ÿ´)ÿ´3ÿ´Cÿ´Oÿ´_ÿ´kÿ´tÿ´ÿ´ÿ´Ÿÿ´©ÿ´·ÿ´Åÿ´Òÿ´Ýÿ´íÿ´øÿµÿµÿµÿµ)ÿµ7ÿµBÿµMÿµ]ÿµmÿµzÿµ‰ÿµ ÿµ«ÿµ·ÿµÉÿµÖÿµâÿµïÿ¶ÿ¶ÿ¶ ÿ¶4ÿ¶?ÿ¶Pÿ¶bÿ¶rÿ¶~ÿ¶ˆÿ¶”ÿ¶Ÿÿ¶«ÿ¶·ÿ¶Éÿ¶Ùÿ¶íÿ·ÿ·ÿ·#ÿ·/ÿ·>ÿ·Lÿ·Vÿ·fÿ·q@ ables == NULL){ - pdu->variables = vp = (struct variable_list *)calloc(1, sizeof(struct variable_list)); - } else { - vp->next_variable = (struct variable_list *)calloc(1, sizeof(struct variable_list)); - vp = vp->next_variable; - } - vp->next_variable = NULL; - vp->val.string = NULL; - vp->name = NULL; - vp->name_length = MAX_NAME_LEN; - data = snmp_parse_var_op(data, objid, &vp->name_length, &vp->type, &vp->val_len, &var_val, (int *)&length); - if (data == NULL) - return -1; - op = (oid *)calloc(1, (unsigned)vp->name_length * sizeof(oid)); - bcopy((char *)objid, (char *)op, vp->name_length * sizeof(oid)); - vp->name = op; - - len = PACKET_LENGTH; - switch((short)vp->type){ - case ASN_INTEGER: - vp->val.integer = (long *)calloc(1, sizeof(long)); - vp->val_len = sizeof(long); - asn_parse_int(var_val, &len, &vp->type, (long *)vp->val.integer, sizeof(vp->val.integer)); - break; - case COUNTER: - case GAUGE: - case TIMETICKS: - case UINTEGER: - vp->val.integer = (long *)calloc(1, sizeof(unsigned long)); - vp->val_len = sizeof(unsigned long); - asn_parse_unsigned_int(var_val, &len, &vp->type, (unsigned long *)vp->val.integer, sizeof(vp->val.integer)); - break; - case COUNTER64: - vp->val.counter64 = (struct counter64 *)calloc(1, sizeof(struct counter64) ); - vp->val_len = sizeof(struct counter64); - asn_parse_unsigned_int64(var_val, &len, &vp->type, - (struct counter64 *)vp->val.counter64, - sizeof(*vp->val.counter64)); - break; - case ASN_OCTET_STR: - case IPADDRESS: - case OPAQUE: - case NSAP: - vp->val.string = (u_char *)calloc(1, (unsigned)vp->val_len); - asn_parse_string(var_val, &len, &vp->type, vp->val.string, &vp->val_len); - break; - case ASN_OBJECT_ID: - vp->val_len = MAX_NAME_LEN; - asn_parse_objid(var_val, &len, &vp->type, objid, &vp->val_len); - vp->val_len *= sizeof(oid); - vp->val.objid = (oid *)calloc(1, (unsigned)vp->val_len); - bcopy((char *)objid, (char *)vp->val.objid, vp->val_len); - break; - case SNMP_NOSUCHOBJECT: - case SNMP_NOSUCHINSTANCE: - case SNMP_ENDOFMIBVIEW: - case ASN_NULL: - break; - default: - fprintf(stderr, "bad type returned (%x)\n", vp->type); - break; - } - } - return ret; -} - -/* - * Sends the input pdu on the session after calling snmp_build to create - * a serialized packet. If necessary, set some of the pdu data from the - * session defaults. Add a request corresponding to this pdu to the list - * of outstanding requests on this session, then send the pdu. - * Returns the request id of the generated packet if applicable, otherwise 1. - * On any error, 0 is returned. - * The pdu is freed by snmp_send() unless a failure occured. - */ -int -snmp_send(session, pdu) - struct snmp_session *session; - struct snmp_pdu *pdu; -{ - struct session_list *slp; - struct snmp_internal_session *isp = NULL; - u_char packet[PACKET_LENGTH]; - int length = PACKET_LENGTH; - struct request_list *rp; - struct timeval tv; - - for(slp = Sessions; slp; slp = slp->next){ - if (slp->session == session){ - isp = slp->internal; - break; - } - } - - if (! pdu) { - snmp_errno = SNMPERR_GENERR; - return 0; - } - - if (isp == NULL){ - snmp_errno = SNMPERR_BAD_SESSION; - return 0; - } - if (pdu->command == GET_REQ_MSG || pdu->command == GETNEXT_REQ_MSG - || pdu->command == GET_RSP_MSG || pdu->command == SET_REQ_MSG - || pdu->command == GETBULK_REQ_MSG ){ - if (pdu->reqid == SNMP_DEFAULT_REQID) - pdu->reqid = ++Reqid; - if (pdu->errstat == SNMP_DEFAULT_ERRSTAT) - pdu->errstat = 0; - if (pdu->errindex == SNMP_DEFAULT_ERRINDEX) - pdu->errindex = 0; - } else { - /* fill in trap defaults */ - pdu->reqid = 1; /* give a bogus non-error reqid for traps */ - if (pdu->enterprise_length == SNMP_DEFAULT_ENTERPRISE_LENGTH){ - pdu->enterprise = (oid *)calloc(1, sizeof(DEFAULT_ENTERPRISE)); - bcopy((char *)DEFAULT_ENTERPRISE, (char *)pdu->enterprise, sizeof(DEFAULT_ENTERPRISE)); - pdu->enterprise_length = sizeof(DEFAULT_ENTERPRISE)/sizeof(oid); - } - if (pdu->time == SNMP_DEFAULT_TIME) - pdu->time = DEFAULT_TIME; - } - if (pdu->address.sin_addr.s_addr == SNMP_DEFAULT_ADDRESS){ - if (isp->addr.sin_addr.s_addr != SNMP_DEFAULT_ADDRESS){ - bcopy((char *)&isp->addr, (char *)&pdu->address, sizeof(pdu->address)); - } else { - fprintf(stderr, "No remote IP address specified\n"); - snmp_errno = SNMPERR_BAD_ADDRESS; - return 0; - } - } - - - if (snmp_build(session, pdu, packet, &length, 0) < 0){ - fprintf(stderr, "Error building packet\n"); - snmp_errno = SNMPERR_GENERR; - return 0; - } -#if 1 /***/ - if (snmp_dump_packet){ - snmp_print_packet(packet, length, pdu->address, 1); - } -#endif /***/ - - gettimeofday(&tv, (struct timezone *) 0); - if (sendto(isp->sd, (char *) packet, length, 0, (struct sockaddr *) &pdu->address, sizeof(pdu->address)) < 0) { - perror("sendto"); - snmp_errno = SNMPERR_GENERR; - return 0; - } - if (pdu->command == GET_REQ_MSG || pdu->command == GETNEXT_REQ_MSG - || pdu->command == SET_REQ_MSG || pdu->command == GETBULK_REQ_MSG) { - /* set up to expect a response */ - rp = (struct request_list *) calloc(1, sizeof(struct request_list)); -ar *)&isp->addr.sin_addr, sizeof(isp->addr.sin_addr)); - } else { - hp = gethostbyname(session->peername); - if (hp == NULL){ - fprintf(stderr, "unknown host: %s\n", session->peername); - snmp_errno = SNMPERR_BAD_ADDRESS; - if (!snmp_close(session)){ - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", api_errstring(snmp_errno)); - exit(2); - } - return 0; - } else { - bcopy((char *)hp->h_addr, (char *)&isp->addr.sin_addr, hp->h_length); - } - } - isp->addr.sin_family = AF_INET; - if (session->remote_port == SNMP_DEFAULT_REMPORT){ - /*servp = getservbyname("snmp", "udp");*/ - servp=NULL; - if (servp != NULL){ - isp->addr.sin_port = servp->s_port; - } else { - isp->addr.sin_port = htons(SNMP_PORT); - } - } else { - isp->addr.sin_port = htons(session->remote_port); - } - } else { - isp->addr.sin_addr.s_addr = SNMP_DEFAULT_ADDRESS; - } - - me.sin_family = AF_INET; - me.sin_addr.s_addr = INADDR_ANY; - me.sin_port = htons(session->local_port); - if (bind(sd, (struct sockaddr *)&me, sizeof(me)) != 0){ - perror("bind"); - snmp_errno = SNMPERR_BAD_LOCPORT; - if (! snmp_close(session)){ - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", - api_errstring(snmp_errno)); - exit(3); - } - return 0; - } - - if( *cp == '/' ) { - session->authenticator = check_received_pkt; - sync_with_agent(session); - parse_app_community_string( session ); - session->qoS |= USEC_QOS_GENREPORT; - } - - /* replace comm pointer with pointer to new data: */ - session->community = cp; - - return session; -} - -void -sync_with_agent( session ) -struct snmp_session *session; -{ - struct snmp_pdu *pdu, *response = 0; - int status; - - session->qoS = USEC_QOS_GENREPORT; - session->userLen = 6; - session->version = SNMP_VERSION_2; - strcpy( session->userName, "public" ); - - snmp_synch_setup(session); - pdu = snmp_pdu_create(GET_REQ_MSG); - status = snmp_synch_response(session, pdu, &response); - - if (status == STAT_SUCCESS){ - memcpy( session->agentID, response->params.agentID, 12 ); - - /* save the clocks -- even though they are not authentic */ - session->agentBoots = response->params.agentBoots; - session->agentTime = response->params.agentTime; - session->agentClock = response->params.agentTime - time(NULL); - - } else { - if (status == STAT_TIMEOUT){ - printf("No Response from %s\n", session->peername); - } else { /* status == STAT_ERROR */ - printf("An error occurred, Quitting\n"); - } - exit( -1 ); - } - - /** freed to early: - snmp_free_pdu(pdu); - if (response) snmp_free_pdu(response); - **/ -} -#if 1 /***/ -/* - * Unlink one element from input request list, - * then free it and it's pdu. - */ -static void -free_one_request(isp, orp) - struct snmp_internal_session *isp; - struct request_list *orp; -{ - struct request_list *rp; - if(! orp) return; - if(isp->requests == orp){ - isp->requests = orp->next_request; /* unlink head */ - } - else{ - for(rp = isp->requests; rp; rp = rp->next_request){ - if(rp->next_request == orp){ - rp->next_request = orp->next_request; /* unlink element */ - break; - } - } - } - if (orp->pdu != NULL){ - snmp_free_pdu(orp->pdu); - } - free((char *)orp); -} -#endif /***/ -/* - * Free each element in the input request list. - */ -static void -free_request_list(rp) - struct request_list *rp; -{ - struct request_list *orp; - - while(rp){ - orp = rp; - rp = rp->next_request; - if (orp->pdu != NULL) - snmp_free_pdu(orp->pdu); - free((char *)orp); - } -} - -/* - * Close the input session. Frees all data allocated for the session, - * dequeues any pending requests, and closes any sockets allocated for - * the session. Returns 0 on error, 1 otherwise. - */ -int -snmp_close(session) - struct snmp_session *session; -{ - struct session_list *slp = NULL, *oslp = NULL; - - if (Sessions->session == session){ /* If first entry */ - slp = Sessions; - Sessions = slp->next; - } else { - for(slp = Sessions; slp; slp = slp->next){ - if (slp->session == session){ - if (oslp) /* if we found entry that points here */ - oslp->next = slp->next; /* link around this entry */ - break; - } - oslp = slp; - } - } - /* If we found the session, free all data associated with it */ - if (slp){ - if (slp->session->community != NULL) - free((char *)slp->session->community); - if(slp->session->peername != NULL) - free((char *)slp->session->peername); - free((char *)slp->session); - if (slp->internal->sd != -1) - close(slp->internal->sd); - free_request_list(slp->internal->requests); - free((char *)slp->internal); - free((char *)slp); - } else { - snmp_errno = SNMPERR_BAD_SESSION; - return 0; - } - return 1; -} - -/* - * Takes a session and a pdu and serializes the ASN PDU into the area - * pointed to by packet. out_length is the size of the data area available. - * Returns the length of the completed packet in out_length. If any errors - * occur, -1 is returned. If all goes well, 0 is returned. - */ -int -snmp_build(session, pdu, packet, out_length, is_agent) - struct snmp_session *session; - struct snmp_pdu *pdu; - u_char *packet; - int *out_length; - int is_agent; -{ - u_char buf[PACKET_LENGTH]; - u_char *cp; - struct variable_list *vp; - int length; - int totallength; - - length = *out_length; - cp = packet; - for(vp = pdu->variables; vp; vp = vp->next_variable){ - cp = snmp_build_var_op(cp, vp->name, &vp->name_length, vp->type, vp->val_len, (u_char *)vp->val.string, &length); - if (cp == NULL) - return -1; - } - totallength = cp - packet; - - length = PACKET_LENGTH; - cp = asn_build_header(buf, &length, (u_char)(ASN_SEQUENCE | ASN_CONSTRUCTOR), totallength); - if (cp == NULL) - return -1; - bcopy((char *)packet, (char *)cp, totallength); - totallength += cp - buf; - - length = *out_length; - if (pdu->command != TRP_REQ_MSG){ - /* request id */ - cp = asn_build_int(packet, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->reqid, sizeof(pdu->reqid)); - if (cp == NULL) - return -1; - /* error status */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->errstat, sizeof(pdu->errstat)); - if (cp == NULL) - return -1; - /* error index */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->errindex, sizeof(pdu->errindex)); - if (cp == NULL) - return -1; - } else { /* this is a trap message */ - /* enterprise */ - cp = asn_build_objid(packet, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_OBJECT_ID), - (oid *)pdu->enterprise, pdu->enterprise_length); - if (cp == NULL) - return -1; - /* agent-addr */ - cp = asn_build_string(cp, &length, (u_char)IPADDRESS, - (u_char *)&pdu->agent_addr.sin_addr.s_addr, sizeof(pdu->agent_addr.sin_addr.s_addr)); - if (cp == NULL) - return -1; - /* generic trap */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->trap_type, sizeof(pdu->trap_type)); - if (cp == NULL) - return -1; - /* specific trap */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->specific_type, sizeof(pdu->specific_type)); - if (cp == NULL) - return -1; - /* timestamp */ - cp = asn_build_int(cp, &length, (u_char)TIMETICKS, - (long *)&pdu->time, sizeof(pdu->time)); - if (cp == NULL) - return -1; - } - if (length < totallength) - return -1; - bcopy((char *)buf, (char *)cp, totallength); - totallength += cp - packet; - - length = PACKET_LENGTH; - cp = asn_build_header(buf, &length, (u_char)pdu->command, totallength); - if (cp == NULL) - return -1; - if (length < totallength) - return -1; - bcopy((char *)packet, (char *)cp, totallength); - totallength += cp - buf; - - length = *out_length; - - cp = snmp_auth_build( packet, &length, session, is_agent, totallength ); - if (cp == NULL) - return -1; - if ((*out_length - (cp - packet)) < totallength) - return -1; - bcopy((char *)buf, (char *)cp, totallength); - totallength += cp - packet; - *out_length = totallength; - - if( session->qoS & USEC_QOS_AUTH ) - md5Digest( packet, totallength, cp - (session->contextLen + 16), - cp - (session->contextLen + 16) ); - - return 0; -} - -/* - * Parses the packet received on the input session, and places the data into - * the input pdu. length is the length of the input packet. If any errors - * are encountered, -1 is returned. Otherwise, a 0 is returned. - */ -static int -snmp_parse(session, pdu, data, length) - struct snmp_session *session; - struct snmp_pdu *pdu; - u_char *data; - int length; -{ - u_char msg_type; - u_char type; - u_char *var_val; - long version; - int len, four; - u_char community[256]; - int community_length = 256; - struct variable_list *vp = 0; - oid objid[MAX_NAME_LEN], *op; - u_char *origdata = data; - int origlength = length; - int ret = 0; - u_char *save_data; - - /* authenticates message and returns length if valid */ - data = snmp_auth_parse(data, &length, community, &community_length, &version); - if (data == NULL) - return -1; - - if( version != SNMP_VERSION_1 && version != SNMP_VERSION_2C && version != SNMP_VERSION_2 ) { - fprintf(stderr, "Wrong version: %ld\n", version); - return -1; - } - - save_data = data; - - data = asn_parse_header(data, &length, &msg_type); - if (data == NULL) - return -1; - pdu->command = msg_type; - - if( session->authenticator ) { - ret = session->authenticator( origdata, origlength, save_data - community_length, - community_length, session, pdu ); - if( ret < 0 ) return ret; - } - - if (pdu->command != TRP_REQ_MSG){ - data = asn_parse_int(data, &length, &type, (long *)&pdu->reqid, sizeof(pdu->reqid)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->errstat, sizeof(pdu->errstat)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->errindex, sizeof(pdu->errindex)); - if (data == NULL) - return -1; - } else { - pdu->enterprise_length = MAX_NAME_LEN; - data = asn_parse_objid(data, &length, &type, objid, &pdu->enterprise_length); - if (data == NULL) - return -1; - pdu->enterprise = (oid *)calloc(1, pdu->enterprise_length * sizeof(oid)); - bcopy((char *)objid, (char *)pdu->enterprise, pdu->enterprise_length * sizeof(oid)); - - four = 4; - data = asn_parse_string(data, &length, &type, (u_char *)&pdu->agent_addr.sin_addr.s_addr, &four); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->trap_type, sizeof(pdu->trap_type)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->specific_type, sizeof(pdu->specific_type)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->time, sizeof(pdu->time)); - if (data == NULL) - return -1; - } - data = asn_parse_header(data, &length, &type); - if (data == NULL) - return -1; - if (type != (u_char)(ASN_SEQUENCE | ASN_CONSTRUCTOR)) - return -1; - while((int)length > 0){ - if (pdu->variBÐ+= m -È /* 4¨*/ BNMPTÊ */cfor testing purposes */e key! replace... - */ - * ÿ¯ùsnmplib/snmp_api.cc.hÿ°…<Ðlib/snmp_api.c~~ñÿ±<ðÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±«=ÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²=0ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²Š=Pÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ³ -=pÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³‚ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×Áÿ³ùÿ´=ø%D(ÿ´_=à\BØÿ´©=˜4BØÿ´ø=ÈHBØÿµB>ÿµ]ÿµmÿµzÿµ >(ÿµ·ÿµÉÿµÖÿµï>@ÿ¶ÿ¶ ÿ¶4ÿ¶Pÿ¶rÿ¶~ÿ¶ˆ0ÿ¶Ÿ4¨ÿ¶·ÿ¶Ù‰èÿ·ÿ·#ÿ·/ÿ·>>Xÿ·V3/usr/people/wessels/.indent.proÿ¯èÿ¯ùÿ° ÿ°ÿ°.ÿ°?ÿ°Mÿ°[ÿ°pÿ°…ÿ°•ÿ°£ÿ°²ÿ°Åÿ°Ûÿ°ñÿ± -ÿ±ÿ±2ÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±™ÿ±«ÿ±ºÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²ÿ²ÿ²2ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²ÿ²Šÿ²™ÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ²öÿ³ -ÿ³ ÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³sÿ³‚ÿ³‘ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×ÿ³çÿ³ùÿ´ÿ´ÿ´ÿ´)ÿ´3ÿ´Cÿ´Oÿ´_ÿ´kÿ´tÿ´ÿ´ÿ´Ÿÿ´©ÿ´·ÿ´Åÿ´Òÿ´Ýÿ´íÿ´øÿµÿµÿµÿµ)ÿµ7ÿµBÿµMÿµ]ÿµmÿµzÿµ‰ÿµ ÿµ«ÿµ·ÿµÉÿµÖÿµâÿµïÿ¶ÿ¶ÿ¶ ÿ¶4ÿ¶?ÿ¶Pÿ¶bÿ¶rÿ¶~ÿ¶ˆÿ¶”ÿ¶Ÿÿ¶«ÿ¶·ÿ¶Éÿ¶Ùÿ¶íÿ·ÿ·ÿ·#ÿ·/ÿ·>ÿ·Lÿ·Vÿ·fÿ·q°>X 4¨ $  @,2ˆ…>X‚àC Ž0   ¸ude/snmp_groupvars.h~ àude/snmp_groupvars.h ŽX Ž€ Ž¨ ŽÐ „©/*********************************************************** - Copyright 1989 by Carnegie Mellon University - - All Rights Reserved - -Permission to use, copy, modify, and distribute this software and its -documentation for any purpose and without fee is hereby granted, -provided that the above copyright notice appear in all copies and that -both that copyright notice and this permission notice appear in -supporting documentation, and that the name of CMU not be -used in advertising or publicity pertaining to distribution of the -software without specific, written prior permission. - -CMU DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING -ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL -CMU BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR -ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, -WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, -ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS -SOFTWARE. -******************************************************************/ -/* - * snmp_api.c - API for access to snmp. - */ -#define DEBUG_SNMPTRACE 0 /* set to 1 to print all SNMP actions */ -#define DEBUG_SNMPFULLDUMP 0 /* set to 1 to dump all SNMP packets */ - -#include -#include -#include -#include -#include -#include -#include -#ifdef linux -#include -#include -#include -#include -#endif - - -#include "asn1.h" -#include "snmp.h" -#include "snmp_impl.h" -#include "snmp_api.h" -#include "snmp_client.h" - -#define PACKET_LENGTH 4500 - -#ifndef BSD4_3 -#define BSD4_2 -#endif - -#if !defined(BSD4_3) && !defined(linux) && !defined(sun) - -typedef long fd_mask; -#define NFDBITS (sizeof(fd_mask) * NBBY) /* bits per mask */ - -#define FD_SET(n, p) ((p)->fds_bits[(n)/NFDBITS] |= (1 << ((n) % NFDBITS))) -#define FD_CLR(n, p) ((p)->fds_bits[(n)/NFDBITS] &= ~(1 << ((n) % NFDBITS))) -#define FD_ISSET(n, p) ((p)->fds_bits[(n)/NFDBITS] & (1 << ((n) % NFDBITS))) -#define FD_ZERO(p) bzero((char *)(p), sizeof(*(p))) -#endif - -oid default_enterprise[] = {1, 3, 6, 1, 4, 1, 3, 1, 1}; /* enterprises.cmu.systems.cmuSNMP */ - -#define DEFAULT_COMMUNITY "public" -#define DEFAULT_REMPORT SNMP_PORT -#define DEFAULT_ENTERPRISE default_enterprise -#define DEFAULT_TIME 0 -#define DEFAULT_MMS 1389 /* large, randomly picked for testing purposes */ - -/* - * Internal information about the state of the snmp session. - */ -struct snmp_internal_session { - int sd; /* socket descriptor for this connection */ - ipaddr addr; /* address of connected peer */ - struct request_list *requests;/* Info about outstanding requests */ -}; - -/* - * A list of all the outstanding requests for a particular session. - */ -struct request_list { - struct request_list *next_request; - u_long request_id; /* request id */ - int retries; /* Number of retries */ - u_long timeout; /* length to wait for timeout */ - struct timeval time; /* Time this request was made */ - struct timeval expire; /* time this request is due to expire */ - struct snmp_pdu *pdu; /* The pdu for this request (saved so it can be retransmitted */ -}; - -/* - * The list of active/open sessions. - */ -struct session_list { - struct session_list *next; - struct snmp_session *session; - struct snmp_internal_session *internal; -}; - -struct session_list *Sessions = NULL; - -u_long Reqid = 0; -int snmp_errno = 0; - -char *api_errors[4] = { - "Unknown session", - "Unknown host", - "Invalid local port", - "Unknown Error" -}; - - -void sync_with_agent(); -int parse_app_community_string(); -void snmp_synch_setup(); -int snmp_synch_response(); -void md5Digest(); - - -static char * -api_errstring(snmp_errnumber) - int snmp_errnumber; -{ - if (snmp_errnumber <= SNMPERR_BAD_SESSION && snmp_errnumber >= SNMPERR_GENERR){ - return api_errors[snmp_errnumber + 4]; - } else { - return "Unknown Error"; - } -} - -#if 0 -/* - * Gets initial request ID for all transactions. - */ -static void -init_snmp(){ - struct timeval tv; - - gettimeofday(&tv, (struct timezone *)0); - srandom(tv.tv_sec ^ tv.tv_usec); - Reqid = random(); -} -#endif - - -/* - * Dump snmp packet to stdout: - */ -static void -snmp_print_packet(packet, length, addr, code) - char *packet; - int length; - ipaddr addr; - int code; -{ - if(length < 0) { - return; - } - if (code <= 0) { /* received */ - printf("\nReceived %4d bytes from ", length); - } - else { /* sending */ - printf("\nSending %4d bytes to ", length); - } - printf("%s:", inet_ntoa(addr.sin_addr)); -#if DEBUG_SNMPFULLDUMP - for (count = 0; count < length; count++) { - if ((count & 15) == 0) { - printf("\n "); - } - printf("%02X ", (int)(packet[count]&255)); - } -#endif - fflush(stdout); -} - -#if DEBUG_SNMPTRACE -/* - * Print request - */ -#define TRACE_SEND (0) -#define TRACE_RECV (1) -#define TRACE_TIMEOUT (2) -static void -snmp_print_trace(slp, rp, code) - struct session_list *slp; - struct request_list *rp; - int code; -{ - int reqid=0, retries=1; - if( rp ){ - reqid = rp->request_id; - retries = rp->retries; - } - printf("\n Session %2d ReqId %4d ", slp->internal->sd, reqid); - switch(code) - { - case TRACE_SEND: printf("send pdu (%d)", retries);break; - case TRACE_RECV: printf("recv pdu");break; - case TRACE_TIMEOUT: printf("time out");break; - } - fflush(stdout); -} -#endif /* DEBUG_SNMPTRACE */ - - - - -/* - * Sets up the session with the snmp_session information provided - * by the user. Then opens and binds the necessary UDP port. - * A handle to the created session is returned (this is different than - * the pointer passed to snmp_open()). On any error, NULL is returned - * and snmp_errno is set to the appropriate error code. - */ -struct snmp_session * -snmp_open(session) - struct snmp_session *session; -{ - struct session_list *slp; - struct snmp_internal_session *isp; - u_char *cp; - int sd; - u_long addr; - struct sockaddr_in me; - struct hostent *hp; - struct servent *servp; - extern int check_received_pkt(); - - /* Copy session structure and link into list */ - slp = (struct session_list *)calloc(1, sizeof(struct session_list)); - slp->internal = isp = (struct snmp_internal_session *)calloc(1, sizeof(struct snmp_internal_session)); - bzero((char *)isp, sizeof(struct snmp_internal_session)); - slp->internal->sd = -1; /* mark it not set */ - slp->session = (struct snmp_session *)calloc(1, sizeof(struct snmp_session)); - bcopy((char *)session, (char *)slp->session, sizeof(struct snmp_session)); - session = slp->session; - /* now link it in. */ - slp->next = Sessions; - Sessions = slp; - - /* - * session now points to the new structure that still contains pointers to - * data allocated elsewhere. Some of this data is copied to space malloc'd - * here, and the pointer replaced with the new one. - */ - - if (session->peername != NULL){ - cp = (u_char *)calloc(1, (unsigned)strlen(session->peername) + 1); - strcpy((char *)cp, session->peername); - session->peername = (char *)cp; - } - - if (session->retries == SNMP_DEFAULT_RETRIES) - session->retries = SNMP_API_DEFAULT_RETRIES; - if (session->timeout == SNMP_DEFAULT_TIMEOUT) - session->timeout = SNMP_API_DEFAULT_TIMEOUT; - if (session->MMS == 0 ) - session->MMS = DEFAULT_MMS; - isp->requests = NULL; - - - /* Fill in defaults if necessary */ - if (session->community_len != SNMP_DEFAULT_COMMUNITY_LEN){ - if( *session->community == '+' ) { - session->community_len--; - cp = (u_char *) calloc(1, (unsigned) session->community_len); - bcopy((char *) session->community+1, (char *)cp, - session->community_len); - session->version = SNMP_VERSION_2C; - } else { - cp = (u_char *) calloc(1, (unsigned) session->community_len); - bcopy((char *) session->community, (char *) cp, - session->community_len); - } - - } else { - session->community_len = strlen(DEFAULT_COMMUNITY); - cp = (u_char *)calloc(1, (unsigned)session->community_len); - bcopy((char *)DEFAULT_COMMUNITY, (char *)cp, session->community_len); - } - - /* Set up connections */ - sd = socket(AF_INET, SOCK_DGRAM, 0); - if (sd < 0){ - perror("socket"); - snmp_errno = SNMPERR_GENERR; - if (!snmp_close(session)){ - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", api_errstring(snmp_errno)); - exit(1); - } - return 0; - } - isp->sd = sd; - - if (session->peername != SNMP_DEFAULT_PEERNAME){ - if ((addr = inet_addr(session->peername)) != -1){ - bcopy((char *)&addr, (char *)&isp->addr.sin_addr, sizeof(isp->addr.sin_addr)); - } else { - hp = gethostbyname(session->peername); - if (hp == NULL){ - fprintf(stderr, "unknown host: %s\n", session->peername); - snmp_errno = SNMPERR_BAD_ADDRESS; - if (!snmp_close(session)){ - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", api_errstring(snmp_errno)); - exit(2); - } - return 0; - } else { - bcopy((char *)hp->h_addr, (char *)&isp->addr.sin_addr, hp->h_length); - } - } - isp->addr.sin_family = AF_INET; - if (session->remote_port == SNMP_DEFAULT_REMPORT){ - /*servp = getservbyname("snmp", "udp");*/ - servp=NULL; - if (servp != NULL){ - isp->addr.sin_port = servp->s_port; - } else { - isp->addr.sin_port = htons(SNMP_PORT); - } - } else { - isp->addr.sin_port = htons(session->remote_port); - } - } else { - isp->addr.sin_addr.s_addr = SNMP_DEFAULT_ADDRESS; - } - - me.sin_family = AF_INET; - me.sin_addr.s_addr = INADDR_ANY; - me.sin_port = htons(session->local_port); - if (bind(sd, (struct sockaddr *)&me, sizeof(me)) != 0){ - perror("bind"); - snmp_errno = SNMPERR_BAD_LOCPORT; - if (! snmp_close(session)){ - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", - api_errstring(snmp_errno)); - exit(3); - } - return 0; - } - - if( *cp == '/' ) { - session->authenticator = check_received_pkt; - sync_with_agent(session); - parse_app_community_string( session ); - session->qoS |= USEC_QOS_GENREPORT; - } - - /* replace comm pointer with pointer to new data: */ - session->community = cp; - - return session; -} - -void -sync_with_agent( session ) -struct snmp_session *session; -{ - struct snmp_pdu *pdu, *response = 0; - int status; - - session->qoS = USEC_QOS_GENREPORT; - session->userLen = 6; - session->version = SNMP_VERSION_2; - strcpy( session->userName, "public" ); - - snmp_synch_setup(session); - pdu = snmp_pdu_create(GET_REQ_MSG); - status = snmp_synch_response(session, pdu, &response); - - if (status == STAT_SUCCESS){ - memcpy( session->agentID, response->params.agentID, 12 ); - - /* save the clocks -- even though they are not authentic */ - session->agentBoots = response->params.agentBoots; - session->agentTime = response->params.agentTime; - session->agentClock = response->params.agentTime - time(NULL); - - } else { - if (status == STAT_TIMEOUT){ - printf("No Response from %s\n", session->peername); - } else { /* status == STAT_ERROR */ - printf("An error occurred, Quitting\n"); - } - exit( -1 ); - } - - /** freed to early: - snmp_free_pdu(pdu); - if (response) snmp_free_pdu(response); - **/ -} -#if 1 /***/ -/* - * Unlink one element from input request list, - * then free it and it's pdu. - */ -static void -free_one_request(isp, orp) - struct snmp_internal_session *isp; - struct request_list *orp; -{ - struct request_list *rp; - if(! orp) return; - if(isp->requests == orp){ - isp->requests = orp->next_request; /* unlink head */ - } - else{ - for(rp = isp->requests; rp; rp = rp->next_request){ - if(rp->next_request == orp){ - rp->next_request = orp->next_request; /* unlink element */ - break; - } - } - } - if (orp->pdu != NULL){ - snmp_free_pdu(orp->pdu); - } - free((char *)orp); -} -#endif /***/ -/* - * Free each element in the input request list. - */ -static void -free_request_list(rp) - struct request_list *rp; -{ - struct request_list *orp; - - while(rp){ - orp = rp; - rp = rp->next_request; - if (orp->pdu != NULL) - snmp_free_pdu(orp->pdu); - free((char *)orp); - } -} - -/* - * Close the input session. Frees all data allocated for the session, - * dequeues any pending requests, and closes any sockets allocated for - * the session. Returns 0 on error, 1 otherwise. - */ -int -snmp_close(session) - struct snmp_session *session; -{ - struct session_list *slp = NULL, *oslp = NULL; - - if (Sessions->session == session){ /* If first entry */ - slp = Sessions; - Sessions = slp->next; - } else { - for(slp = Sessions; slp; slp = slp->next){ - if (slp->session == session){ - if (oslp) /* if we found entry that points here */ - oslp->next = slp->next; /* link around this entry */ - break; - } - oslp = slp; - } - } - /* If we found the session, free all data associated with it */ - if (slp){ - if (slp->session->community != NULL) - free((char *)slp->session->community); - if(slp->session->peername != NULL) - free((char *)slp->session->peername); - free((char *)slp->session); - if (slp->internal->sd != -1) - close(slp->internal->sd); - free_request_list(slp->internal->requests); - free((char *)slp->internal); - free((char *)slp); - } else { - snmp_errno = SNMPERR_BAD_SESSION; - return 0; - } - return 1; -} - -/* - * Takes a session and a pdu and serializes the ASN PDU into the area - * pointed to by packet. out_length is the size of the data area available. - * Returns the length of the completed packet in out_length. If any errors - * occur, -1 is returned. If all goes well, 0 is returned. - */ -int -snmp_build(session, pdu, packet, out_length, is_agent) - struct snmp_session *session; - struct snmp_pdu *pdu; - u_char *packet; - int *out_length; - int is_agent; -{ - u_char buf[PACKET_LENGTH]; - u_char *cp; - struct variable_list *vp; - int length; - int totallength; - - length = *out_length; - cp = packet; - for(vp = pdu->variables; vp; vp = vp->next_variable){ - cp = snmp_build_var_op(cp, vp->name, &vp->name_length, vp->type, vp->val_len, (u_char *)vp->val.string, &length); - if (cp == NULL) - return -1; - } - totallength = cp - packet; - - length = PACKET_LENGTH; - cp = asn_build_header(buf, &length, (u_char)(ASN_SEQUENCE | ASN_CONSTRUCTOR), totallength); - if (cp == NULL) - return -1; - bcopy((char *)packet, (char *)cp, totallength); - totallength += cp - buf; - - length = *out_length; - if (pdu->command != TRP_REQ_MSG){ - /* request id */ - cp = asn_build_int(packet, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->reqid, sizeof(pdu->reqid)); - if (cp == NULL) - return -1; - /* error status */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->errstat, sizeof(pdu->errstat)); - if (cp == NULL) - return -1; - /* error index */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->errindex, sizeof(pdu->errindex)); - if (cp == NULL) - return -1; - } else { /* this is a trap message */ - /* enterprise */ - cp = asn_build_objid(packet, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_OBJECT_ID), - (oid *)pdu->enterprise, pdu->enterprise_length); - if (cp == NULL) - return -1; - /* agent-addr */ - cp = asn_build_string(cp, &length, (u_char)IPADDRESS, - (u_char *)&pdu->agent_addr.sin_addr.s_addr, sizeof(pdu->agent_addr.sin_addr.s_addr)); - if (cp == NULL) - return -1; - /* generic trap */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->trap_type, sizeof(pdu->trap_type)); - if (cp == NULL) - return -1; - /* specific trap */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->specific_type, sizeof(pdu->specific_type)); - if (cp == NULL) - return -1; - /* timestamp */ - cp = asn_build_int(cp, &length, (u_char)TIMETICKS, - (long *)&pdu->time, sizeof(pdu->time)); - if (cp == NULL) - return -1; - } - if (length < totallength) - return -1; - bcopy((char *)buf, (char *)cp, totallength); - totallength += cp - packet; - - length = PACKET_LENGTH; - cp = asn_build_header(buf, &length, (u_char)pdu->command, totallength); - if (cp == NULL) - return -1; - if (length < totallength) - return -1; - bcopy((char *)packet, (char *)cp, totallength); - totallength += cp - buf; - - length = *out_length; - - cp = snmp_auth_build( packet, &length, session, is_agent, totallength ); - if (cp == NULL) - return -1; - if ((*out_length - (cp - packet)) < totallength) - return -1; - bcopy((char *)buf, (char *)cp, totallength); - totallength += cp - packet; - *out_length = totallength; - - if( session->qoS & USEC_QOS_AUTH ) - md5Digest( packet, totallength, cp - (session->contextLen + 16), - cp - (session->contextLen + 16) ); - - return 0; -} - -/* - * Parses the packet received on the input session, and places the data into - * the input pdu. length is the length of the input packet. If any errors - * are encountered, -1 is returned. Otherwise, a 0 is returned. - */ -static int -snmp_parse(session, pdu, data, length) - struct snmp_session *session; - struct snmp_pdu *pdu; - u_char *data; - int length; -{ - u_char msg_type; - u_char type; - u_char *var_val; - long version; - int len, four; - u_char community[256]; - int community_length = 256; - struct variable_list *vp = 0; - oid objid[MAX_NAME_LEN], *op; - u_char *origdata = data; - int origlength = length; - int ret = 0; - u_char *save_data; - - /* authenticates message and returns length if valid */ - data = snmp_auth_parse(data, &length, community, &community_length, &version); - if (data == NULL) - return -1; - - if( version != SNMP_VERSION_1 && version != SNMP_VERSION_2C && version != SNMP_VERSION_2 ) { - fprintf(stderr, "Wrong version: %ld\n", version); - return -1; - } - - save_data = data; - - data = asn_parse_header(data, &length, &msg_type); - if (data == NULL) - return -1; - pdu->command = msg_type; - - if( session->authenticator ) { - ret = session->authenticator( origdata, origlength, save_data - community_length, - community_length, session, pdu ); - if( ret < 0 ) return ret; - } - - if (pdu->command != TRP_REQ_MSG){ - data = asn_parse_int(data, &length, &type, (long *)&pdu->reqid, sizeof(pdu->reqid)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->errstat, sizeof(pdu->errstat)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->errindex, sizeof(pdu->errindex)); - if (data == NULL) - return -1; - } else { - pdu->enterprise_length = MAX_NAME_LEN; - data = asn_parse_objid(data, &length, &type, objid, &pdu->enterprise_length); - if (data == NULL) - return -1; - pdu->enterprise = (oid *)calloc(1, pdu->enterprise_length * sizeof(oid)); - bcopy((char *)objid, (char *)pdu->enterprise, pdu->enterprise_length * sizeof(oid)); - - four = 4; - data = asn_parse_string(data, &length, &type, (u_char *)&pdu->agent_addr.sin_addr.s_addr, &four); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->trap_type, sizeof(pdu->trap_type)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->specific_type, sizeof(pdu->specific_type)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->time, sizeof(pdu->time)); - if (data == NULL) - return -1; - } - data = asn_parse_header(data, &length, &type); - if (data == NULL) - return -1; - if (type != (u_char)(ASN_SEQUENCE | ASN_CONSTRUCTOR)) - return -1; - while((int)length > 0){ - if (pdu->variables == NULL){ - pdu->variables = vp = (struct variable_list *)calloc(1, sizeof(struct variable_list)); - } else { - vp->next_variable = (struct variable_list *)calloc(1, sizeof(struct variable_list)); - vp = vp->next_variable; - } - vp->next_variable = NULL; - vp->val.string = NULL; - vp->name = NULL; - vp->name_length = MAX_NAME_LEN; - data = snmp_parse_var_op(data, objid, &vp->name_length, &vp->type, &vp->val_len, &var_val, (int *)&length); - if (data == NULL) - return -1; - op = (oid *)calloc(1, (unsigned)vp->name_length * sizeof(oid)); - bcopy((char *)objid, (char *)op, vp->name_length * sizeof(oid)); - vp->name = op; - - len = PACKET_LENGTH; - switch((short)vp->type){ - case ASN_INTEGER: - vp->val.integer = (long *)calloc(1, sizeof(long)); - vp->val_len = sizeof(long); - asn_parse_int(var_val, &len, &vp->type, (long *)vp->val.integer, sizeof(vp->val.integer)); - break; - case COUNTER: - case GAUGE: - case TIMETICKS: - case UINTEGER: - vp->val.integer = (long *)calloc(1, sizeof(unsigned long)); - vp->val_len = sizeof(unsigned long); - asn_parse_unsigned_int(var_val, &len, &vp->type, (unsigned long *)vp->val.integer, sizeof(vp->val.integer)); - break; - case COUNTER64: - vp->val.counter64 = (struct counter64 *)calloc(1, sizeof(struct counter64) ); - vp->val_len = sizeof(struct counter64); - asn_parse_unsigned_int64(var_val, &len, &vp->type, - (struct counter64 *)vp->val.counter64, - sizeof(*vp->val.counter64)); - break; - case ASN_OCTET_STR: - case IPADDRESS: - case OPAQUE: - case NSAP: - vp->val.string = (u_char *)calloc(1, (unsigned)vp->val_len); - asn_parse_string(var_val, &len, &vp->type, vp->val.string, &vp->val_len); - break; - case ASN_OBJECT_ID: - vp->val_len = MAX_NAME_LEN; - asn_parse_objid(var_val, &len, &vp->type, objid, &vp->val_len); - vp->val_len *= sizeof(oid); - vp->val.objid = (oid *)calloc(1, (unsigned)vp->val_len); - bcopy((char *)objid, (char *)vp->val.objid, vp->val_len); - break; - case SNMP_NOSUCHOBJECT: - case SNMP_NOSUCHINSTANCE: - case SNMP_ENDOFMIBVIEW: - case ASN_NULL: - break; - default: - fprintf(stderr, "bad type returned (%x)\n", vp->type); - break; - } - } - return ret; -} - -/* - * Sends the input pdu on the session after calling snmp_build to create - * a serialized packet. If necessary, set some of the pdu data from the - * session defaults. Add a request corresponding to this pdu to the list - * of outstanding requests on this session, then send the pdu. - * Returns the request id of the generated packet if applicable, otherwise 1. - * On any error, 0 is returned. - * The pdu is freed by snmp_send() unless a failure occured. - */ -int -snmp_send(session, pdu) - struct snmp_session *session; - struct snmp_pdu *pdu; -{ - struct session_list *slp; - struct snmp_internal_session *isp = NULL; - u_char packet[PACKET_LENGTH]; - int length = PACKET_LENGTH; - struct request_list *rp; - struct timeval tv; - - for(slp = Sessions; slp; slp = slp->next){ - if (slp->session == session){ - isp = slp->internal; - break; - } - } - - if (! pdu) { - snmp_errno = SNMPERR_GENERR; - return 0; - } - - if (isp == NULL){ - snmp_errno = SNMPERR_BAD_SESSION; - return 0; - } - if (pdu->command == GET_REQ_MSG || pdu->command == GETNEXT_REQ_MSG - || pdu->command == GET_RSP_MSG || pdu->command == SET_REQ_MSG - || pdu->command == GETBULK_REQ_MSG ){ - if (pdu->reqid == SNMP_DEFAULT_REQID) - pdu->reqid = ++Reqid; - if (pdu->errstat == SNMP_DEFAULT_ERRSTAT) - pdu->errstat = 0; - if (pdu->errindex == SNMP_DEFAULT_ERRINDEX) - pdu->errindex = 0; - } else { - /* fill in trap defaults */ - pdu->reqid = 1; /* give a bogus non-error reqid for traps */ - if (pdu->enterprise_length == SNMP_DEFAULT_ENTERPRISE_LENGTH){ - pdu->enterprise = (oid *)calloc(1, sizeof(DEFAULT_ENTERPRISE)); - bcopy((char *)DEFAULT_ENTERPRISE, (char *)pdu->enterprise, sizeof(DEFAULT_ENTERPRISE)); - pdu->enterprise_length = sizeof(DEFAULT_ENTERPRISE)/sizeof(oid); - } - if (pdu->time == SNMP_DEFAULT_TIME) - pdu->time = DEFAULT_TIME; - } - if (pdu->address.sin_addr.s_addr == SNMP_DEFAULT_ADDRESS){ - if (isp->addr.sin_addr.s_addr != SNMP_DEFAULT_ADDRESS){ - bcopy((char *)&isp->addr, (char *)&pdu->address, sizeof(pdu->address)); - } else { - fprintf(stderr, "No remote IP address specified\n"); - snmp_errno = SNMPERR_BAD_ADDRESS; - return 0; - } - } - - - if (snmp_build(session, pdu, packet, &length, 0) < 0){ - fprintf(stderr, "Error building packet\n"); - snmp_errno = SNMPERR_GENERR; - return 0; - } -#if 1 /***/ - if (snmp_dump_packet){ - snmp_print_packet(packet, length, pdu->address, 1); - } -#endif /***/ - - gettimeofday(&tv, (struct timezone *)0); - if (sendto(isp->sd, (char *)packet, length, 0, (struct sockaddr *)&pdu->address, sizeof(pdu->address)) < 0){ - perror("sendto"); - snmp_errno = SNMPERR_GENERR; - return 0; - } - if (pdu->command == GET_REQ_MSG || pdu->command == GETNEXT_REQ_MSG - || pdu->command == SET_REQ_MSG || pdu->command == GETBULK_REQ_MSG ){ - /* set up to expect a response */ - rp = (struct request_list *)calloc(1, sizeof(struct request_list)); -#if 1 /***/ - if (!rp) { - fprintf(stderr, "Out of memory!\n"); - snmp_errno = SNMPERR_GENERR; - return 0; - } -#endif/***/ if we found entry that points here */ - oslp e key! replace... - */ - * ÿ¯ùsnmplib/snmp_api.cc.hÿ°…<Ðlib/snmp_api.c~~ñÿ±<ðÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±«=ÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²=0ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²Š=Pÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ³ -=pÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³‚ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×Áÿ³ùÿ´=ø%D(ÿ´_=à\BØÿ´©=˜4BØÿ´ø=ÈHBØÿµB>ÿµ]ÿµmÿµzÿµ >(ÿµ·ÿµÉÿµÖÿµï>@ÿ¶ÿ¶ ÿ¶4ÿ¶Pÿ¶rÿ¶~ÿ¶ˆ0ÿ¶Ÿÿ¶·ÿ¶Ù‚àÿ·ÿ·#ÿ·/ÿ·>>Xÿ·V3/usr/people/wessels/.indent.proÿ¯èÿ¯ùÿ° ÿ°ÿ°.ÿ°?ÿ°Mÿ°[ÿ°pÿ°…ÿ°•ÿ°£ÿ°²ÿ°Åÿ°Ûÿ°ñÿ± -ÿ±ÿ±2ÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±™ÿ±«ÿ±ºÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²ÿ²ÿ²2ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²ÿ²Šÿ²™ÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ²öÿ³ -ÿ³ ÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³sÿ³‚ÿ³‘ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×ÿ³çÿ³ùÿ´ÿ´ÿ´ÿ´)ÿ´3ÿ´Cÿ´Oÿ´_ÿ´kÿ´tÿ´ÿ´ÿ´Ÿÿ´©ÿ´·ÿ´Åÿ´Òÿ´Ýÿ´íÿ´øÿµÿµÿµÿµ)ÿµ7ÿµBÿµMÿµ]ÿµmÿµzÿµ‰ÿµ ÿµ«ÿµ·ÿµÉÿµÖÿµâÿµïÿ¶ÿ¶ÿ¶ ÿ¶4ÿ¶?ÿ¶Pÿ¶bÿ¶rÿ¶~ÿ¶ˆÿ¶”ÿ¶Ÿÿ¶«ÿ¶·ÿ¶Éÿ¶Ùÿ¶íÿ·ÿ·ÿ·#ÿ·/ÿ·>ÿ·Lÿ·Vÿ·fÿ·q@ e SNMP_ENDOFMIBVIEW: - case ASN_NULL: - break; - default: - fprintf(stderr, "bad type returned (%x)\n", vp->type); - break; - } - } - return ret; -} - -/* - * Sends the input pdu on the session after calling snmp_build to create - * a serialized packet. If necessary, set some of the pdu data from the - * session defaults. Add a request corresponding to this pdu to the list - * of outstanding requests on this session, then send the pdu. - * Returns the request id of the generated packet if applicable, otherwise 1. - * On any error, 0 is returned. - * The pdu is freed by snmp_send() unless a failure occured. - */ -int -snmp_send(session, pdu) - struct snmp_session *session; - struct snmp_pdu *pdu; -{ - struct session_list *slp; - struct snmp_internal_session *isp = NULL; - u_char packet[PACKET_LENGTH]; - int length = PACKET_LENGTH; - struct request_list *rp; - struct timeval tv; - - for(slp = Sessions; slp; slp = slp->next){ - if (slp->session == session){ - isp = slp->internal; - break; - } - } - - if (! pdu) { - snmp_errno = SNMPERR_GENERR; - return 0; - } - - if (isp == NULL){ - snmp_errno = SNMPERR_BAD_SESSION; - return 0; - } - if (pdu->command == GET_REQ_MSG || pdu->command == GETNEXT_REQ_MSG - || pdu->command == GET_RSP_MSG || pdu->command == SET_REQ_MSG - || pdu->command == GETBULK_REQ_MSG ){ - if (pdu->reqid == SNMP_DEFAULT_REQID) - pdu->reqid = ++Reqid; - if (pdu->errstat == SNMP_DEFAULT_ERRSTAT) - pdu->errstat = 0; - if (pdu->errindex == SNMP_DEFAULT_ERRINDEX) - pdu->errindex = 0; - } else { - /* fill in trap defaults */ - pdu->reqid = 1; /* give a bogus non-error reqid for traps */ - if (pdu->enterprise_length == SNMP_DEFAULT_ENTERPRISE_LENGTH){ - pdu->enterprise = (oid *)calloc(1, sizeof(DEFAULT_ENTERPRISE)); - bcopy((char *)DEFAULT_ENTERPRISE, (char *)pdu->enterprise, sizeof(DEFAULT_ENTERPRISE)); - pdu->enterprise_length = sizeof(DEFAULT_ENTERPRISE)/sizeof(oid); - } - if (pdu->time == SNMP_DEFAULT_TIME) - pdu->time = DEFAULT_TIME; - } - if (pdu->address.sin_addr.s_addr == SNMP_DEFAULT_ADDRESS){ - if (isp->addr.sin_addr.s_addr != SNMP_DEFAULT_ADDRESS){ - bcopy((char *)&isp->addr, (char *)&pdu->address, sizeof(pdu->address)); - } else { - fprintf(stderr, "No remote IP address specified\n"); - snmp_errno = SNMPERR_BAD_ADDRESS; - return 0; - } - } - - - if (snmp_build(session, pdu, packet, &length, 0) < 0){ - fprintf(stderr, "Error building packet\n"); - snmp_errno = SNMPERR_GENERR; - return 0; - } -#if 1 /***/ - if (snmp_dump_packet){ - snmp_print_packet(packet, length, pdu->address, 1); - } -#endif /***/ - - gettimeofday(&tv, (struct timezone *)0); - if (sendto(isp->sd, (char *)packet, length, 0, (struct sockaddr *)&pdu->address, sizeof(pdu->address)) < 0){ - perror("sendto"); - snmp_errno = SNMPERR_GENERR; - return 0; - } - if (pdu->command == GET_REQ_MSG || pdu->command == GETNEXT_REQ_MSG - || pdu->command == SET_REQ_MSG || pdu->command == GETBULK_REQ_MSG ){ - /* set up to expect a response */ - rp = (struct request_list *)calloc(1, sizeof(struct request_list)); -#if 1 /***/ - if (!rp) { - fprintf(stderr, "Out of memory!\n"); - snmp_errno = SNMPERR_GENERR; - return 0; - } -ULL){ - fprintf(stderr, "unknown host: %s\n", session->peername); - snmp_errno = SNMPERR_BAD_ADDRESS; - if (!snmp_close(session)){ - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", api_errstring(snmp_errno)); - exit(2); - } - return 0; - } else { - bcopy((char *)hp->h_addr, (char *)&isp->addr.sin_addr, hp->h_length); - } - } - isp->addr.sin_family = AF_INET; - if (session->remote_port == SNMP_DEFAULT_REMPORT){ - /*servp = getservbyname("snmp", "udp");*/ - servp=NULL; - if (servp != NULL){ - isp->addr.sin_port = servp->s_port; - } else { - isp->addr.sin_port = htons(SNMP_PORT); - } - } else { - isp->addr.sin_port = htons(session->remote_port); - } - } else { - isp->addr.sin_addr.s_addr = SNMP_DEFAULT_ADDRESS; - } - - me.sin_family = AF_INET; - me.sin_addr.s_addr = INADDR_ANY; - me.sin_port = htons(session->local_port); - if (bind(sd, (struct sockaddr *)&me, sizeof(me)) != 0){ - perror("bind"); - snmp_errno = SNMPERR_BAD_LOCPORT; - if (! snmp_close(session)){ - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", - api_errstring(snmp_errno)); - exit(3); - } - return 0; - } - - if( *cp == '/' ) { - session->authenticator = check_received_pkt; - sync_with_agent(session); - parse_app_community_string( session ); - session->qoS |= USEC_QOS_GENREPORT; - } - - /* replace comm pointer with pointer to new data: */ - session->community = cp; - - return session; -} - -void -sync_with_agent( session ) -struct snmp_session *session; -{ - struct snmp_pdu *pdu, *response = 0; - int status; - - session->qoS = USEC_QOS_GENREPORT; - session->userLen = 6; - session->version = SNMP_VERSION_2; - strcpy( session->userName, "public" ); - - snmp_synch_setup(session); - pdu = snmp_pdu_create(GET_REQ_MSG); - status = snmp_synch_response(session, pdu, &response); - - if (status == STAT_SUCCESS){ - memcpy( session->agentID, response->params.agentID, 12 ); - - /* save the clocks -- even though they are not authentic */ - session->agentBoots = response->params.agentBoots; - session->agentTime = response->params.agentTime; - session->agentClock = response->params.agentTime - time(NULL); - - } else { - if (status == STAT_TIMEOUT){ - printf("No Response from %s\n", session->peername); - } else { /* status == STAT_ERROR */ - printf("An error occurred, Quitting\n"); - } - exit( -1 ); - } - - /** freed to early: - snmp_free_pdu(pdu); - if (response) snmp_free_pdu(response); - **/ -} -#if 1 /***/ -/* - * Unlink one element from input request list, - * then free it and it's pdu. - */ -static void -free_one_request(isp, orp) - struct snmp_internal_session *isp; - struct request_list *orp; -{ - struct request_list *rp; - if(! orp) return; - if(isp->requests == orp){ - isp->requests = orp->next_request; /* unlink head */ - } - else{ - for(rp = isp->requests; rp; rp = rp->next_request){ - if(rp->next_request == orp){ - rp->next_request = orp->next_request; /* unlink element */ - break; - } - } - } - if (orp->pdu != NULL){ - snmp_free_pdu(orp->pdu); - } - free((char *)orp); -} -#endif /***/ -/* - * Free each element in the input request list. - */ -static void -free_request_list(rp) - struct request_list *rp; -{ - struct request_list *orp; - - while(rp){ - orp = rp; - rp = rp->next_request; - if (orp->pdu != NULL) - snmp_free_pdu(orp->pdu); - free((char *)orp); - } -} - -/* - * Close the input session. Frees all data allocated for the session, - * dequeues any pending requests, and closes any sockets allocated for - * the session. Returns 0 on error, 1 otherwise. - */ -int -snmp_close(session) - struct snmp_session *session; -{ - struct session_list *slp = NULL, *oslp = NULL; - - if (Sessions->session == session){ /* If first entry */ - slp = Sessions; - Sessions = slp->next; - } else { - for(slp = Sessions; slp; slp = slp->next){ - if (slp->session == session){ - if (oslp) /* if we found entry that points here */ - oslp->next = slp->next; /* link around this entry */ - break; - } - oslp = slp; - } - } - /* If we found the session, free all data associated with it */ - if (slp){ - if (slp->session->community != NULL) - free((char *)slp->session->community); - if(slp->session->peername != NULL) - free((char *)slp->session->peername); - free((char *)slp->session); - if (slp->internal->sd != -1) - close(slp->internal->sd); - free_request_list(slp->internal->requests); - free((char *)slp->internal); - free((char *)slp); - } else { - snmp_errno = SNMPERR_BAD_SESSION; - return 0; - } - return 1; -} - -/* - * Takes a session and a pdu and serializes the ASN PDU into the area - * pointed to by packet. out_length is the size of the data area available. - * Returns the length of the completed packet in out_length. If any errors - * occur, -1 is returned. If all goes well, 0 is returned. - */ -int -snmp_build(session, pdu, packet, out_length, is_agent) - struct snmp_session *session; - struct snmp_pdu *pdu; - u_char *packet; - int *out_length; - int is_agent; -{ - u_char buf[PACKET_LENGTH]; - u_char *cp; - struct variable_list *vp; - int length; - int totallength; - - length = *out_length; - cp = packet; - for(vp = pdu->variables; vp; vp = vp->next_variable){ - cp = snmp_build_var_op(cp, vp->name, &vp->name_length, vp->type, vp->val_len, (u_char *)vp->val.string, &length); - if (cp == NULL) - return -1; - } - totallength = cp - packet; - - length = PACKET_LENGTH; - cp = asn_build_header(buf, &length, (u_char)(ASN_SEQUENCE | ASN_CONSTRUCTOR), totallength); - if (cp == NULL) - return -1; - bcopy((char *)packet, (char *)cp, totallength); - totallength += cp - buf; - - length = *out_length; - if (pdu->command != TRP_REQ_MSG){ - /* request id */ - cp = asn_build_int(packet, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->reqid, sizeof(pdu->reqid)); - if (cp == NULL) - return -1; - /* error status */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->errstat, sizeof(pdu->errstat)); - if (cp == NULL) - return -1; - /* error index */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->errindex, sizeof(pdu->errindex)); - if (cp == NULL) - return -1; - } else { /* this is a trap message */ - /* enterprise */ - cp = asn_build_objid(packet, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_OBJECT_ID), - (oid *)pdu->enterprise, pdu->enterprise_length); - if (cp == NULL) - return -1; - /* agent-addr */ - cp = asn_build_string(cp, &length, (u_char)IPADDRESS, - (u_char *)&pdu->agent_addr.sin_addr.s_addr, sizeof(pdu->agent_addr.sin_addr.s_addr)); - if (cp == NULL) - return -1; - /* generic trap */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->trap_type, sizeof(pdu->trap_type)); - if (cp == NULL) - return -1; - /* specific trap */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->specific_type, sizeof(pdu->specific_type)); - if (cp == NULL) - return -1; - /* timestamp */ - cp = asn_build_int(cp, &length, (u_char)TIMETICKS, - (long *)&pdu->time, sizeof(pdu->time)); - if (cp == NULL) - return -1; - } - if (length < totallength) - return -1; - bcopy((char *)buf, (char *)cp, totallength); - totallength += cp - packet; - - length = PACKET_LENGTH; - cp = asn_build_header(buf, &length, (u_char)pdu->command, totallength); - if (cp == NULL) - return -1; - if (length < totallength) - return -1; - bcopy((char *)packet, (char *)cp, totallength); - totallength += cp - buf; - - length = *out_length; - - cp = snmp_auth_build( packet, &length, session, is_agent, totallength ); - if (cp == NULL) - return -1; - if ((*out_length - (cp - packet)) < totallength) - return -1; - bcopy((char *)buf, (char *)cp, totallength); - totallength += cp - packet; - *out_length = totallength; - - if( session->qoS & USEC_QOS_AUTH ) - md5Digest( packet, totallength, cp - (session->contextLen + 16), - cp - (session->contextLen + 16) ); - - return 0; -} - -/* - * Parses the packet received on the input session, and places the data into - * the input pdu. length is the length of the input packet. If any errors - * are encountered, -1 is returned. Otherwise, a 0 is returned. - */ -static int -snmp_parse(session, pdu, data, length) - struct snmp_session *session; - struct snmp_pdu *pdu; - u_char *data; - int length; -{ - u_char msg_type; - u_char type; - u_char *var_val; - long version; - int len, four; - u_char community[256]; - int community_length = 256; - struct variable_list *vp = 0; - oid objid[MAX_NAME_LEN], *op; - u_char *origdata = data; - int origlength = length; - int ret = 0; - u_char *save_data; - - /* authenticates message and returns length if valid */ - data = snmp_auth_parse(data, &length, community, &community_length, &version); - if (data == NULL) - return -1; - - if( version != SNMP_VERSION_1 && version != SNMP_VERSION_2C && version != SNMP_VERSION_2 ) { - fprintf(stderr, "Wrong version: %ld\n", version); - return -1; - } - - save_data = data; - - data = asn_parse_header(data, &length, &msg_type); - if (data == NULL) - return -1; - pdu->command = msg_type; - - if( session->authenticator ) { - ret = session->authenticator( origdata, origlength, save_data - community_length, - community_length, session, pdu ); - if( ret < 0 ) return ret; - } - - if (pdu->command != TRP_REQ_MSG){ - data = asn_parse_int(data, &length, &type, (long *)&pdu->reqid, sizeof(pdu->reqid)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->errstat, sizeof(pdu->errstat)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->errindex, sizeof(pdu->errindex)); - if (data == NULL) - return -1; - } else { - pdu->enterprise_length = MAX_NAME_LEN; - data = asn_parse_objid(data, &length, &type, objid, &pdu->enterprise_length); - if (data == NULL) - return -1; - pdu->enterprise = (oid *)calloc(1, pdu->enterprise_length * sizeof(oid)); - bcopy((char *)objid, (char *)pdu->enterprise, pdu->enterprise_length * sizeof(oid)); - - four = 4; - data = asn_parse_string(data, &length, &type, (u_char *)&pdu->agent_addr.sin_addr.s_addr, &four); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->trap_type, sizeof(pdu->trap_type)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->specific_type, sizeof(pdu->specific_type)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->time, sizeof(pdu->time)); - if (data == NULL) - return -1; - } - data = asn_parse_header(data, &length, &type); - if (data == NULL) - return -1; - if (type != (u_char)(ASN_SEQUENCE | ASN_CONSTRUCTOR)) - return -1; - while((int)length > 0){ - if (pdu->variables == NULL){ - pdu->variables = vp = (struct variable_list *)calloc(1, sizeof(struct variable_list)); - } else { - vp->next_variable = (struct variable_list *)calloc(1, sizeof(struct variable_list)); - vp = vp->next_variable; - } - vp->next_variable = NULL; - vp->val.string = NULL; - vp->name = NULL; - vp->name_length = MAX_NAME_LEN; - data = snmp_parse_var_op(data, objid, &vp->name_length, &vp->type, &vp->val_len, &var_val, (int *)&length); - if (data == NULL) - return -1; - op = (oid *)calloc(1, (unsigned)vp->name_length * sizeof(oid)); - bcopy((char *)objid, (char *)op, vp->name_length * sizeof(oid)); - vp->name = op; - - len = PACKET_LENGTH; - switch((short)vp->type){ - case ASN_INTEGER: - vp->val.integer = (long *)calloc(1, sizeof(long)); - vp->val_len = sizeof(long); - asn_parse_int(var_val, &len, &vp->type, (long *)vp->val.integer, sizeof(vp->val.integer)); - break; - case COUNTER: - case GAUGE: - case TIMETICKS: - case UINTEGER: - vp->val.integer = (long *)calloc(1, sizeof(unsigned long)); - vp->val_len = sizeof(unsigned long); - asn_parse_unsigned_int(var_val, &len, &vp->type, (unsigned long *)vp->val.integer, sizeof(vp->val.integer)); - break; - case COUNTER64: - vp->val.counter64 = (struct counter64 *)calloc(1, sizeof(struct counter64) ); - vp->val_len = sizeof(struct counter64); - asn_parse_unsigned_int64(var_val, &len, &vp->type, - (struct counter64 *)vp->val.counter64, - sizeof(*vp->val.counter64)); - break; - case ASN_OCTET_STR: - case IPADDRESS: - case OPAQUE: - case NSAP: - vp->val.string = (u_char *)calloc(1, (unsigned)vp->val_len); - asn_parse_string(var_val, &len, &vp->type, vp->val.string, &vp->val_len); - break; - case ASN_OBJECT_ID: - vp->val_len = MAX_NAME_LEN; - asn_parse_objid(var_val, &len, &vp->type, objid, &vp->val_len); - vp->val_len *= sizeof(oid); - vp->val.objid = (oid *)calloc(1, (unsigned)vp->val_len); - bcopy((char *)objid, (char *)vp->val.objid, vp->val_len); - break; - case SNMP_NOSUCHOBJECT: - case SNMP_NOSUCHINSTANCE: - casBÐ+= m -È /* >X*/ B4¨NMPTË° */cfor testing purposes */e key! replace... - */ - * ÿ¯ùsnmplib/snmp_api.cc.hÿ°…<Ðlib/snmp_api.c~~ñÿ±<ðÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±«=ÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²=0ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²Š=Pÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ³ -=pÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³‚ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×Áÿ³ùÿ´=ø%D(ÿ´_=à\BØÿ´©=˜4BØÿ´ø=ÈHBØÿµB>ÿµ]ÿµmÿµzÿµ >(ÿµ·ÿµÉÿµÖÿµï>@ÿ¶ÿ¶ ÿ¶4ÿ¶Pÿ¶rÿ¶~ÿ¶ˆ0ÿ¶Ÿ4¨ÿ¶·ÿ¶Ù‰èÿ·ÿ·#ÿ·/ÿ·>>Xÿ·V3/usr/people/wessels/.indent.proÿ¯èÿ¯ùÿ° ÿ°ÿ°.ÿ°?ÿ°Mÿ°[ÿ°pÿ°…ÿ°•ÿ°£ÿ°²ÿ°Åÿ°Ûÿ°ñÿ± -ÿ±ÿ±2ÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±™ÿ±«ÿ±ºÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²ÿ²ÿ²2ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²ÿ²Šÿ²™ÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ²öÿ³ -ÿ³ ÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³sÿ³‚ÿ³‘ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×ÿ³çÿ³ùÿ´ÿ´ÿ´ÿ´)ÿ´3ÿ´Cÿ´Oÿ´_ÿ´kÿ´tÿ´ÿ´ÿ´Ÿÿ´©ÿ´·ÿ´Åÿ´Òÿ´Ýÿ´íÿ´øÿµÿµÿµÿµ)ÿµ7ÿµBÿµMÿµ]ÿµmÿµzÿµ‰ÿµ ÿµ«ÿµ·ÿµÉÿµÖÿµâÿµïÿ¶ÿ¶ÿ¶ ÿ¶4ÿ¶?ÿ¶Pÿ¶bÿ¶rÿ¶~ÿ¶ˆÿ¶”ÿ¶Ÿÿ¶«ÿ¶·ÿ¶Éÿ¶Ùÿ¶íÿ·ÿ·ÿ·#ÿ·/ÿ·>ÿ·Lÿ·Vÿ·fÿ·q°>X 4¨ $  @,2ˆ…>X‚àC Ž0   ¸ude/snmp_groupvars.h~ àude/snmp_groupvars.h ŽX Ž€ Ž¨ ŽÐ „©/*********************************************************** - Copyright 1989 by Carnegie Mellon University - - All Rights Reserved - -Permission to use, copy, modify, and distribute this software and its -documentation for any purpose and without fee is hereby granted, -provided that the above copyright notice appear in all copies and that -both that copyright notice and this permission notice appear in -supporting documentation, and that the name of CMU not be -used in advertising or publicity pertaining to distribution of the -software without specific, written prior permission. - -CMU DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING -ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL -CMU BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR -ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, -WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, -ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS -SOFTWARE. -******************************************************************/ -/* - * snmp_api.c - API for access to snmp. - */ -#define DEBUG_SNMPTRACE 0 /* set to 1 to print all SNMP actions */ -#define DEBUG_SNMPFULLDUMP 0 /* set to 1 to dump all SNMP packets */ - -#include -#include -#include -#include -#include -#include -#include -#ifdef linux -#include -#include -#include -#include -#endif - - -#include "asn1.h" -#include "snmp.h" -#include "snmp_impl.h" -#include "snmp_api.h" -#include "snmp_client.h" - -#define PACKET_LENGTH 4500 - -#ifndef BSD4_3 -#define BSD4_2 -#endif - -#if !defined(BSD4_3) && !defined(linux) && !defined(sun) - -typedef long fd_mask; -#define NFDBITS (sizeof(fd_mask) * NBBY) /* bits per mask */ - -#define FD_SET(n, p) ((p)->fds_bits[(n)/NFDBITS] |= (1 << ((n) % NFDBITS))) -#define FD_CLR(n, p) ((p)->fds_bits[(n)/NFDBITS] &= ~(1 << ((n) % NFDBITS))) -#define FD_ISSET(n, p) ((p)->fds_bits[(n)/NFDBITS] & (1 << ((n) % NFDBITS))) -#define FD_ZERO(p) bzero((char *)(p), sizeof(*(p))) -#endif - -oid default_enterprise[] = {1, 3, 6, 1, 4, 1, 3, 1, 1}; /* enterprises.cmu.systems.cmuSNMP */ - -#define DEFAULT_COMMUNITY "public" -#define DEFAULT_REMPORT SNMP_PORT -#define DEFAULT_ENTERPRISE default_enterprise -#define DEFAULT_TIME 0 -#define DEFAULT_MMS 1389 /* large, randomly picked for testing purposes */ - -/* - * Internal information about the state of the snmp session. - */ -struct snmp_internal_session { - int sd; /* socket descriptor for this connection */ - ipaddr addr; /* address of connected peer */ - struct request_list *requests;/* Info about outstanding requests */ -}; - -/* - * A list of all the outstanding requests for a particular session. - */ -struct request_list { - struct request_list *next_request; - u_long request_id; /* request id */ - int retries; /* Number of retries */ - u_long timeout; /* length to wait for timeout */ - struct timeval time; /* Time this request was made */ - struct timeval expire; /* time this request is due to expire */ - struct snmp_pdu *pdu; /* The pdu for this request (saved so it can be retransmitted */ -}; - -/* - * The list of active/open sessions. - */ -struct session_list { - struct session_list *next; - struct snmp_session *session; - struct snmp_internal_session *internal; -}; - -struct session_list *Sessions = NULL; - -u_long Reqid = 0; -int snmp_errno = 0; - -char *api_errors[4] = { - "Unknown session", - "Unknown host", - "Invalid local port", - "Unknown Error" -}; - - -void sync_with_agent(); -int parse_app_community_string(); -void snmp_synch_setup(); -int snmp_synch_response(); -void md5Digest(); - - -static char * -api_errstring(snmp_errnumber) - int snmp_errnumber; -{ - if (snmp_errnumber <= SNMPERR_BAD_SESSION && snmp_errnumber >= SNMPERR_GENERR){ - return api_errors[snmp_errnumber + 4]; - } else { - return "Unknown Error"; - } -} - -#if 0 -/* - * Gets initial request ID for all transactions. - */ -static void -init_snmp(){ - struct timeval tv; - - gettimeofday(&tv, (struct timezone *)0); - srandom(tv.tv_sec ^ tv.tv_usec); - Reqid = random(); -} -#endif - - -/* - * Dump snmp packet to stdout: - */ -static void -snmp_print_packet(packet, length, addr, code) - char *packet; - int length; - ipaddr addr; - int code; -{ - if(length < 0) { - return; - } - if (code <= 0) { /* received */ - printf("\nReceived %4d bytes from ", length); - } - else { /* sending */ - printf("\nSending %4d bytes to ", length); - } - printf("%s:", inet_ntoa(addr.sin_addr)); -#if DEBUG_SNMPFULLDUMP - for (count = 0; count < length; count++) { - if ((count & 15) == 0) { - printf("\n "); - } - printf("%02X ", (int)(packet[count]&255)); - } -#endif - fflush(stdout); -} - -#if DEBUG_SNMPTRACE -/* - * Print request - */ -#define TRACE_SEND (0) -#define TRACE_RECV (1) -#define TRACE_TIMEOUT (2) -static void -snmp_print_trace(slp, rp, code) - struct session_list *slp; - struct request_list *rp; - int code; -{ - int reqid=0, retries=1; - if( rp ){ - reqid = rp->request_id; - retries = rp->retries; - } - printf("\n Session %2d ReqId %4d ", slp->internal->sd, reqid); - switch(code) - { - case TRACE_SEND: printf("send pdu (%d)", retries);break; - case TRACE_RECV: printf("recv pdu");break; - case TRACE_TIMEOUT: printf("time out");break; - } - fflush(stdout); -} -#endif /* DEBUG_SNMPTRACE */ - - - - -/* - * Sets up the session with the snmp_session information provided - * by the user. Then opens and binds the necessary UDP port. - * A handle to the created session is returned (this is different than - * the pointer passed to snmp_open()). On any error, NULL is returned - * and snmp_errno is set to the appropriate error code. - */ -struct snmp_session * -snmp_open(session) - struct snmp_session *session; -{ - struct session_list *slp; - struct snmp_internal_session *isp; - u_char *cp; - int sd; - u_long addr; - struct sockaddr_in me; - struct hostent *hp; - struct servent *servp; - extern int check_received_pkt(); - - /* Copy session structure and link into list */ - slp = (struct session_list *)calloc(1, sizeof(struct session_list)); - slp->internal = isp = (struct snmp_internal_session *)calloc(1, sizeof(struct snmp_internal_session)); - bzero((char *)isp, sizeof(struct snmp_internal_session)); - slp->internal->sd = -1; /* mark it not set */ - slp->session = (struct snmp_session *)calloc(1, sizeof(struct snmp_session)); - bcopy((char *)session, (char *)slp->session, sizeof(struct snmp_session)); - session = slp->session; - /* now link it in. */ - slp->next = Sessions; - Sessions = slp; - - /* - * session now points to the new structure that still contains pointers to - * data allocated elsewhere. Some of this data is copied to space malloc'd - * here, and the pointer replaced with the new one. - */ - - if (session->peername != NULL){ - cp = (u_char *)calloc(1, (unsigned)strlen(session->peername) + 1); - strcpy((char *)cp, session->peername); - session->peername = (char *)cp; - } - - if (session->retries == SNMP_DEFAULT_RETRIES) - session->retries = SNMP_API_DEFAULT_RETRIES; - if (session->timeout == SNMP_DEFAULT_TIMEOUT) - session->timeout = SNMP_API_DEFAULT_TIMEOUT; - if (session->MMS == 0 ) - session->MMS = DEFAULT_MMS; - isp->requests = NULL; - - - /* Fill in defaults if necessary */ - if (session->community_len != SNMP_DEFAULT_COMMUNITY_LEN){ - if( *session->community == '+' ) { - session->community_len--; - cp = (u_char *) calloc(1, (unsigned) session->community_len); - bcopy((char *) session->community+1, (char *)cp, - session->community_len); - session->version = SNMP_VERSION_2C; - } else { - cp = (u_char *) calloc(1, (unsigned) session->community_len); - bcopy((char *) session->community, (char *) cp, - session->community_len); - } - - } else { - session->community_len = strlen(DEFAULT_COMMUNITY); - cp = (u_char *)calloc(1, (unsigned)session->community_len); - bcopy((char *)DEFAULT_COMMUNITY, (char *)cp, session->community_len); - } - - /* Set up connections */ - sd = socket(AF_INET, SOCK_DGRAM, 0); - if (sd < 0){ - perror("socket"); - snmp_errno = SNMPERR_GENERR; - if (!snmp_close(session)){ - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", api_errstring(snmp_errno)); - exit(1); - } - return 0; - } - isp->sd = sd; - - if (session->peername != SNMP_DEFAULT_PEERNAME){ - if ((addr = inet_addr(session->peername)) != -1){ - bcopy((char *)&addr, (char *)&isp->addr.sin_addr, sizeof(isp->addr.sin_addr)); - } else { - hp = gethostbyname(session->peername); - if (hp == NULL){ - fprintf(stderr, "unknown host: %s\n", session->peername); - snmp_errno = SNMPERR_BAD_ADDRESS; - if (!snmp_close(session)){ - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", api_errstring(snmp_errno)); - exit(2); - } - return 0; - } else { - bcopy((char *)hp->h_addr, (char *)&isp->addr.sin_addr, hp->h_length); - } - } - isp->addr.sin_family = AF_INET; - if (session->remote_port == SNMP_DEFAULT_REMPORT){ - /*servp = getservbyname("snmp", "udp");*/ - servp=NULL; - if (servp != NULL){ - isp->addr.sin_port = servp->s_port; - } else { - isp->addr.sin_port = htons(SNMP_PORT); - } - } else { - isp->addr.sin_port = htons(session->remote_port); - } - } else { - isp->addr.sin_addr.s_addr = SNMP_DEFAULT_ADDRESS; - } - - me.sin_family = AF_INET; - me.sin_addr.s_addr = INADDR_ANY; - me.sin_port = htons(session->local_port); - if (bind(sd, (struct sockaddr *)&me, sizeof(me)) != 0){ - perror("bind"); - snmp_errno = SNMPERR_BAD_LOCPORT; - if (! snmp_close(session)){ - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", - api_errstring(snmp_errno)); - exit(3); - } - return 0; - } - - if( *cp == '/' ) { - session->authenticator = check_received_pkt; - sync_with_agent(session); - parse_app_community_string( session ); - session->qoS |= USEC_QOS_GENREPORT; - } - - /* replace comm pointer with pointer to new data: */ - session->community = cp; - - return session; -} - -void -sync_with_agent( session ) -struct snmp_session *session; -{ - struct snmp_pdu *pdu, *response = 0; - int status; - - session->qoS = USEC_QOS_GENREPORT; - session->userLen = 6; - session->version = SNMP_VERSION_2; - strcpy( session->userName, "public" ); - - snmp_synch_setup(session); - pdu = snmp_pdu_create(GET_REQ_MSG); - status = snmp_synch_response(session, pdu, &response); - - if (status == STAT_SUCCESS){ - memcpy( session->agentID, response->params.agentID, 12 ); - - /* save the clocks -- even though they are not authentic */ - session->agentBoots = response->params.agentBoots; - session->agentTime = response->params.agentTime; - session->agentClock = response->params.agentTime - time(NULL); - - } else { - if (status == STAT_TIMEOUT){ - printf("No Response from %s\n", session->peername); - } else { /* status == STAT_ERROR */ - printf("An error occurred, Quitting\n"); - } - exit( -1 ); - } - - /** freed to early: - snmp_free_pdu(pdu); - if (response) snmp_free_pdu(response); - **/ -} -#if 1 /***/ -/* - * Unlink one element from input request list, - * then free it and it's pdu. - */ -static void -free_one_request(isp, orp) - struct snmp_internal_session *isp; - struct request_list *orp; -{ - struct request_list *rp; - if(! orp) return; - if(isp->requests == orp){ - isp->requests = orp->next_request; /* unlink head */ - } - else{ - for(rp = isp->requests; rp; rp = rp->next_request){ - if(rp->next_request == orp){ - rp->next_request = orp->next_request; /* unlink element */ - break; - } - } - } - if (orp->pdu != NULL){ - snmp_free_pdu(orp->pdu); - } - free((char *)orp); -} -#endif /***/ -/* - * Free each element in the input request list. - */ -static void -free_request_list(rp) - struct request_list *rp; -{ - struct request_list *orp; - - while(rp){ - orp = rp; - rp = rp->next_request; - if (orp->pdu != NULL) - snmp_free_pdu(orp->pdu); - free((char *)orp); - } -} - -/* - * Close the input session. Frees all data allocated for the session, - * dequeues any pending requests, and closes any sockets allocated for - * the session. Returns 0 on error, 1 otherwise. - */ -int -snmp_close(session) - struct snmp_session *session; -{ - struct session_list *slp = NULL, *oslp = NULL; - - if (Sessions->session == session){ /* If first entry */ - slp = Sessions; - Sessions = slp->next; - } else { - for(slp = Sessions; slp; slp = slp->next){ - if (slp->session == session){ - if (oslp) /* if we found entry that points here */ - oslp->next = slp->next; /* link around this entry */ - break; - } - oslp = slp; - } - } - /* If we found the session, free all data associated with it */ - if (slp){ - if (slp->session->community != NULL) - free((char *)slp->session->community); - if(slp->session->peername != NULL) - free((char *)slp->session->peername); - free((char *)slp->session); - if (slp->internal->sd != -1) - close(slp->internal->sd); - free_request_list(slp->internal->requests); - free((char *)slp->internal); - free((char *)slp); - } else { - snmp_errno = SNMPERR_BAD_SESSION; - return 0; - } - return 1; -} - -/* - * Takes a session and a pdu and serializes the ASN PDU into the area - * pointed to by packet. out_length is the size of the data area available. - * Returns the length of the completed packet in out_length. If any errors - * occur, -1 is returned. If all goes well, 0 is returned. - */ -int -snmp_build(session, pdu, packet, out_length, is_agent) - struct snmp_session *session; - struct snmp_pdu *pdu; - u_char *packet; - int *out_length; - int is_agent; -{ - u_char buf[PACKET_LENGTH]; - u_char *cp; - struct variable_list *vp; - int length; - int totallength; - - length = *out_length; - cp = packet; - for(vp = pdu->variables; vp; vp = vp->next_variable){ - cp = snmp_build_var_op(cp, vp->name, &vp->name_length, vp->type, vp->val_len, (u_char *)vp->val.string, &length); - if (cp == NULL) - return -1; - } - totallength = cp - packet; - - length = PACKET_LENGTH; - cp = asn_build_header(buf, &length, (u_char)(ASN_SEQUENCE | ASN_CONSTRUCTOR), totallength); - if (cp == NULL) - return -1; - bcopy((char *)packet, (char *)cp, totallength); - totallength += cp - buf; - - length = *out_length; - if (pdu->command != TRP_REQ_MSG){ - /* request id */ - cp = asn_build_int(packet, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->reqid, sizeof(pdu->reqid)); - if (cp == NULL) - return -1; - /* error status */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->errstat, sizeof(pdu->errstat)); - if (cp == NULL) - return -1; - /* error index */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->errindex, sizeof(pdu->errindex)); - if (cp == NULL) - return -1; - } else { /* this is a trap message */ - /* enterprise */ - cp = asn_build_objid(packet, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_OBJECT_ID), - (oid *)pdu->enterprise, pdu->enterprise_length); - if (cp == NULL) - return -1; - /* agent-addr */ - cp = asn_build_string(cp, &length, (u_char)IPADDRESS, - (u_char *)&pdu->agent_addr.sin_addr.s_addr, sizeof(pdu->agent_addr.sin_addr.s_addr)); - if (cp == NULL) - return -1; - /* generic trap */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->trap_type, sizeof(pdu->trap_type)); - if (cp == NULL) - return -1; - /* specific trap */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->specific_type, sizeof(pdu->specific_type)); - if (cp == NULL) - return -1; - /* timestamp */ - cp = asn_build_int(cp, &length, (u_char)TIMETICKS, - (long *)&pdu->time, sizeof(pdu->time)); - if (cp == NULL) - return -1; - } - if (length < totallength) - return -1; - bcopy((char *)buf, (char *)cp, totallength); - totallength += cp - packet; - - length = PACKET_LENGTH; - cp = asn_build_header(buf, &length, (u_char)pdu->command, totallength); - if (cp == NULL) - return -1; - if (length < totallength) - return -1; - bcopy((char *)packet, (char *)cp, totallength); - totallength += cp - buf; - - length = *out_length; - - cp = snmp_auth_build( packet, &length, session, is_agent, totallength ); - if (cp == NULL) - return -1; - if ((*out_length - (cp - packet)) < totallength) - return -1; - bcopy((char *)buf, (char *)cp, totallength); - totallength += cp - packet; - *out_length = totallength; - - if( session->qoS & USEC_QOS_AUTH ) - md5Digest( packet, totallength, cp - (session->contextLen + 16), - cp - (session->contextLen + 16) ); - - return 0; -} - -/* - * Parses the packet received on the input session, and places the data into - * the input pdu. length is the length of the input packet. If any errors - * are encountered, -1 is returned. Otherwise, a 0 is returned. - */ -static int -snmp_parse(session, pdu, data, length) - struct snmp_session *session; - struct snmp_pdu *pdu; - u_char *data; - int length; -{ - u_char msg_type; - u_char type; - u_char *var_val; - long version; - int len, four; - u_char community[256]; - int community_length = 256; - struct variable_list *vp = 0; - oid objid[MAX_NAME_LEN], *op; - u_char *origdata = data; - int origlength = length; - int ret = 0; - u_char *save_data; - - /* authenticates message and returns length if valid */ - data = snmp_auth_parse(data, &length, community, &community_length, &version); - if (data == NULL) - return -1; - - if( version != SNMP_VERSION_1 && version != SNMP_VERSION_2C && version != SNMP_VERSION_2 ) { - fprintf(stderr, "Wrong version: %ld\n", version); - return -1; - } - - save_data = data; - - data = asn_parse_header(data, &length, &msg_type); - if (data == NULL) - return -1; - pdu->command = msg_type; - - if( session->authenticator ) { - ret = session->authenticator( origdata, origlength, save_data - community_length, - community_length, session, pdu ); - if( ret < 0 ) return ret; - } - - if (pdu->command != TRP_REQ_MSG){ - data = asn_parse_int(data, &length, &type, (long *)&pdu->reqid, sizeof(pdu->reqid)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->errstat, sizeof(pdu->errstat)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->errindex, sizeof(pdu->errindex)); - if (data == NULL) - return -1; - } else { - pdu->enterprise_length = MAX_NAME_LEN; - data = asn_parse_objid(data, &length, &type, objid, &pdu->enterprise_length); - if (data == NULL) - return -1; - pdu->enterprise = (oid *)calloc(1, pdu->enterprise_length * sizeof(oid)); - bcopy((char *)objid, (char *)pdu->enterprise, pdu->enterprise_length * sizeof(oid)); - - four = 4; - data = asn_parse_string(data, &length, &type, (u_char *)&pdu->agent_addr.sin_addr.s_addr, &four); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->trap_type, sizeof(pdu->trap_type)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->specific_type, sizeof(pdu->specific_type)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->time, sizeof(pdu->time)); - if (data == NULL) - return -1; - } - data = asn_parse_header(data, &length, &type); - if (data == NULL) - return -1; - if (type != (u_char)(ASN_SEQUENCE | ASN_CONSTRUCTOR)) - return -1; - while((int)length > 0){ - if (pdu->variables == NULL){ - pdu->variables = vp = (struct variable_list *)calloc(1, sizeof(struct variable_list)); - } else { - vp->next_variable = (struct variable_list *)calloc(1, sizeof(struct variable_list)); - vp = vp->next_variable; - } - vp->next_variable = NULL; - vp->val.string = NULL; - vp->name = NULL; - vp->name_length = MAX_NAME_LEN; - data = snmp_parse_var_op(data, objid, &vp->name_length, &vp->type, &vp->val_len, &var_val, (int *)&length); - if (data == NULL) - return -1; - op = (oid *)calloc(1, (unsigned)vp->name_length * sizeof(oid)); - bcopy((char *)objid, (char *)op, vp->name_length * sizeof(oid)); - vp->name = op; - - len = PACKET_LENGTH; - switch((short)vp->type){ - case ASN_INTEGER: - vp->val.integer = (long *)calloc(1, sizeof(long)); - vp->val_len = sizeof(long); - asn_parse_int(var_val, &len, &vp->type, (long *)vp->val.integer, sizeof(vp->val.integer)); - break; - case COUNTER: - case GAUGE: - case TIMETICKS: - case UINTEGER: - vp->val.integer = (long *)calloc(1, sizeof(unsigned long)); - vp->val_len = sizeof(unsigned long); - asn_parse_unsigned_int(var_val, &len, &vp->type, (unsigned long *)vp->val.integer, sizeof(vp->val.integer)); - break; - case COUNTER64: - vp->val.counter64 = (struct counter64 *)calloc(1, sizeof(struct counter64) ); - vp->val_len = sizeof(struct counter64); - asn_parse_unsigned_int64(var_val, &len, &vp->type, - (struct counter64 *)vp->val.counter64, - sizeof(*vp->val.counter64)); - break; - case ASN_OCTET_STR: - case IPADDRESS: - case OPAQUE: - case NSAP: - vp->val.string = (u_char *)calloc(1, (unsigned)vp->val_len); - asn_parse_string(var_val, &len, &vp->type, vp->val.string, &vp->val_len); - break; - case ASN_OBJECT_ID: - vp->val_len = MAX_NAME_LEN; - asn_parse_objid(var_val, &len, &vp->type, objid, &vp->val_len); - vp->val_len *= sizeof(oid); - vp->val.objid = (oid *)calloc(1, (unsigned)vp->val_len); - bcopy((char *)objid, (char *)vp->val.objid, vp->val_len); - break; - case SNMP_NOSUCHOBJECT: - case SNMP_NOSUCHINSTANCE: - case SNMP_ENDOFMIBVIEW: - case ASN_NULL: - break; - default: - fprintf(stderr, "bad type returned (%x)\n", vp->type); - break; - } - } - return ret; -} - -/* - * Sends the input pdu on the session after calling snmp_build to create - * a serialized packet. If necessary, set some of the pdu data from the - * session defaults. Add a request corresponding to this pdu to the list - * of outstanding requests on this session, then send the pdu. - * Returns the request id of the generated packet if applicable, otherwise 1. - * On any error, 0 is returned. - * The pdu is freed by snmp_send() unless a failure occured. - */ -int -snmp_send(session, pdu) - struct snmp_session *session; - struct snmp_pdu *pdu; -{ - struct session_list *slp; - struct snmp_internal_session *isp = NULL; - u_char packet[PACKET_LENGTH]; - int length = PACKET_LENGTH; - struct request_list *rp; - struct timeval tv; - - for(slp = Sessions; slp; slp = slp->next){ - if (slp->session == session){ - isp = slp->internal; - break; - } - } - - if (! pdu) { - snmp_errno = SNMPERR_GENERR; - return 0; - } - - if (isp == NULL){ - snmp_errno = SNMPERR_BAD_SESSION; - return 0; - } - if (pdu->command == GET_REQ_MSG || pdu->command == GETNEXT_REQ_MSG - || pdu->command == GET_RSP_MSG || pdu->command == SET_REQ_MSG - || pdu->command == GETBULK_REQ_MSG ){ - if (pdu->reqid == SNMP_DEFAULT_REQID) - pdu->reqid = ++Reqid; - if (pdu->errstat == SNMP_DEFAULT_ERRSTAT) - pdu->errstat = 0; - if (pdu->errindex == SNMP_DEFAULT_ERRINDEX) - pdu->errindex = 0; - } else { - /* fill in trap defaults */ - pdu->reqid = 1; /* give a bogus non-error reqid for traps */ - if (pdu->enterprise_length == SNMP_DEFAULT_ENTERPRISE_LENGTH){ - pdu->enterprise = (oid *)calloc(1, sizeof(DEFAULT_ENTERPRISE)); - bcopy((char *)DEFAULT_ENTERPRISE, (char *)pdu->enterprise, sizeof(DEFAULT_ENTERPRISE)); - pdu->enterprise_length = sizeof(DEFAULT_ENTERPRISE)/sizeof(oid); - } - if (pdu->time == SNMP_DEFAULT_TIME) - pdu->time = DEFAULT_TIME; - } - if (pdu->address.sin_addr.s_addr == SNMP_DEFAULT_ADDRESS){ - if (isp->addr.sin_addr.s_addr != SNMP_DEFAULT_ADDRESS){ - bcopy((char *)&isp->addr, (char *)&pdu->address, sizeof(pdu->address)); - } else { - fprintf(stderr, "No remote IP address specified\n"); - snmp_errno = SNMPERR_BAD_ADDRESS; - return 0; - } - } - - - if (snmp_build(session, pdu, packet, &length, 0) < 0){ - fprintf(stderr, "Error building packet\n"); - snmp_errno = SNMPERR_GENERR; - return 0; - } -#if 1 /***/ - if (snmp_dump_packet){ - snmp_print_packet(packet, length, pdu->address, 1); - } -#endif /***/ - - gettimeofday(&tv, (struct timezone *)0); - if (sendto(isp->sd, (char *)packet, length, 0, (struct sockaddr *)&pdu->address, sizeof(pdu->address)) < 0){ - perror("sendto"); - snmp_errno = SNMPERR_GENERR; - return 0; - } - if (pdu->command == GET_REQ_MSG || pdu->command == GETNEXT_REQ_MSG - || pdu->command == SET_REQ_MSG || pdu->command == GETBULK_REQ_MSG ){ - /* set up to expect a response */ - rp = (struct request_list *)calloc(1, sizeof(struct request_list)); -#if 1 /***/ - if(! rp){ - fprintf(stderr, "Out of memory!\n"); - snmp_errno = SNMPERR_GENERR; - return 0; - } -#endif /***/ - rp->next_request = isp->requests; - isp->requests = rp; - rp->pdu = pdu; - rp->request_id = pdu->reqid; - - rp->retries = 1; - rp->timeout = session->timeout; - rp->time = tv; - tv.tv_usec += rp->timeout; - tv.tv_sec += tv.tv_usec / 1000000L; - tv.tv_usec %= 1000000L; - rp->expire = tv; -#if DEBUG_SNMPTRACE - snmp_print_trace(slp, rp, TRACE_SEND); -#endif - } - return pdu->reqid; -} - -/* - * Frees the pdu and any malloc'd data associated with it. - */ -void -snmp_free_pdu(struct snmp_pdu *pdu) -{ - struct variable_list *vp, *ovp; - - if (!pdu) - return; - - vp = pdu->variables; - while (vp) { - if (vp->name) { - free((char *) vp->name); - } - if (vp->val.string) { - free((char *) vp->val.string); - } - ovp = vp; - vp = vp->next_variable; - free((char *) ovp); - } - if (pdu->enterprise) { - free((char *) pdu->enterprise); - } - free((char *) pdu); -} - - -/* - * Checks to see if any of the fd's set in the fdset belong to - * snmp. Each socket with it's fd set has a packet read from it - * and snmp_parse is called on the packet received. The resulting pdu - * is passed to the callback routine for that session. If the callback - * routine returns successfully, the pdu and it's request are deleted. - */ -void -snmp_read(fdset) - fd_set *fdset; -{ - struct session_list *slp; - struct snmp_session *sp; - struct snmp_internal_session *isp; - u_char packet[PACKET_LENGTH]; - struct sockaddr_in from; - ssize_t length, fromlength; - struct snmp_pdu *pdu; - struct request_list *rp /**, *orp **/ ; - - for (slp = Sessions; slp; slp = slp->next) { - if (FD_ISSET(slp->internal->sd, fdset)) { - sp = slp->session; - isp = slp->internal; - fromlength = sizeof(from); - length = recvfrom(isp->sd, (char *) packet, PACKET_LENGTH, 0, (struct sockaddr *) &from, &fromlength); - if (length == -1) { - perror("recvfrom"); - return; - } -#if 1/***/ if we found entry that points here */ - oslp e key! replace... - */ - * ÿ¯ùsnmplib/snmp_api.cc.hÿ°…<Ðlib/snmp_api.c~~ñÿ±<ðÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±«=ÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²=0ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²Š=Pÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ³ -=pÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³‚ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×Áÿ³ùÿ´=ø%D(ÿ´_=à\BØÿ´©=˜4BØÿ´ø=ÈHBØÿµB>ÿµ]ÿµmÿµzÿµ >(ÿµ·ÿµÉÿµÖÿµï>@ÿ¶ÿ¶ ÿ¶4ÿ¶Pÿ¶rÿ¶~ÿ¶ˆ0ÿ¶Ÿÿ¶·ÿ¶Ù4¨ÿ·ÿ·#ÿ·/ÿ·>>Xÿ·V3/usr/people/wessels/.indent.proÿ¯èÿ¯ùÿ° ÿ°ÿ°.ÿ°?ÿ°Mÿ°[ÿ°pÿ°…ÿ°•ÿ°£ÿ°²ÿ°Åÿ°Ûÿ°ñÿ± -ÿ±ÿ±2ÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±™ÿ±«ÿ±ºÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²ÿ²ÿ²2ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²ÿ²Šÿ²™ÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ²öÿ³ -ÿ³ ÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³sÿ³‚ÿ³‘ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×ÿ³çÿ³ùÿ´ÿ´ÿ´ÿ´)ÿ´3ÿ´Cÿ´Oÿ´_ÿ´kÿ´tÿ´ÿ´ÿ´Ÿÿ´©ÿ´·ÿ´Åÿ´Òÿ´Ýÿ´íÿ´øÿµÿµÿµÿµ)ÿµ7ÿµBÿµMÿµ]ÿµmÿµzÿµ‰ÿµ ÿµ«ÿµ·ÿµÉÿµÖÿµâÿµïÿ¶ÿ¶ÿ¶ ÿ¶4ÿ¶?ÿ¶Pÿ¶bÿ¶rÿ¶~ÿ¶ˆÿ¶”ÿ¶Ÿÿ¶«ÿ¶·ÿ¶Éÿ¶Ùÿ¶íÿ·ÿ·ÿ·#ÿ·/ÿ·>ÿ·Lÿ·Vÿ·fÿ·q@ - } - if (pdu->time == SNMP_DEFAULT_TIME) - pdu->time = DEFAULT_TIME; - } - if (pdu->address.sin_addr.s_addr == SNMP_DEFAULT_ADDRESS){ - if (isp->addr.sin_addr.s_addr != SNMP_DEFAULT_ADDRESS){ - bcopy((char *)&isp->addr, (char *)&pdu->address, sizeof(pdu->address)); - } else { - fprintf(stderr, "No remote IP address specified\n"); - snmp_errno = SNMPERR_BAD_ADDRESS; - return 0; - } - } - - - if (snmp_build(session, pdu, packet, &length, 0) < 0){ - fprintf(stderr, "Error building packet\n"); - snmp_errno = SNMPERR_GENERR; - return 0; - } -#if 1 /***/ - if (snmp_dump_packet){ - snmp_print_packet(packet, length, pdu->address, 1); - } -#endif /***/ - - gettimeofday(&tv, (struct timezone *)0); - if (sendto(isp->sd, (char *)packet, length, 0, (struct sockaddr *)&pdu->address, sizeof(pdu->address)) < 0){ - perror("sendto"); - snmp_errno = SNMPERR_GENERR; - return 0; - } - if (pdu->command == GET_REQ_MSG || pdu->command == GETNEXT_REQ_MSG - || pdu->command == SET_REQ_MSG || pdu->command == GETBULK_REQ_MSG ){ - /* set up to expect a response */ - rp = (struct request_list *)calloc(1, sizeof(struct request_list)); -#if 1 /***/ - if(! rp){ - fprintf(stderr, "Out of memory!\n"); - snmp_errno = SNMPERR_GENERR; - return 0; - } -#endif /***/ - rp->next_request = isp->requests; - isp->requests = rp; - rp->pdu = pdu; - rp->request_id = pdu->reqid; - - rp->retries = 1; - rp->timeout = session->timeout; - rp->time = tv; - tv.tv_usec += rp->timeout; - tv.tv_sec += tv.tv_usec / 1000000L; - tv.tv_usec %= 1000000L; - rp->expire = tv; -#if DEBUG_SNMPTRACE - snmp_print_trace(slp, rp, TRACE_SEND); -#endif - } - return pdu->reqid; -} - -/* - * Frees the pdu and any malloc'd data associated with it. - */ -void -snmp_free_pdu(struct snmp_pdu *pdu) -{ - struct variable_list *vp, *ovp; - - if (!pdu) - return; - - vp = pdu->variables; - while (vp) { - if (vp->name) { - free((char *) vp->name); - } - if (vp->val.string) { - free((char *) vp->val.string); - } - ovp = vp; - vp = vp->next_variable; - free((char *) ovp); - } - if (pdu->enterprise) { - free((char *) pdu->enterprise); - } - free((char *) pdu); -} - - -/* - * Checks to see if any of the fd's set in the fdset belong to - * snmp. Each socket with it's fd set has a packet read from it - * and snmp_parse is called on the packet received. The resulting pdu - * is passed to the callback routine for that session. If the callback - * routine returns successfully, the pdu and it's request are deleted. - */ -void -snmp_read(fdset) - fd_set *fdset; -{ - struct session_list *slp; - struct snmp_session *sp; - struct snmp_internal_session *isp; - u_char packet[PACKET_LENGTH]; - struct sockaddr_in from; - ssize_t length, fromlength; - struct snmp_pdu *pdu; - struct request_list *rp /**, *orp **/ ; - - for (slp = Sessions; slp; slp = slp->next) { - if (FD_ISSET(slp->internal->sd, fdset)) { - sp = slp->session; - isp = slp->internal; - fromlength = sizeof(from); - length = recvfrom(isp->sd, (char *) packet, PACKET_LENGTH, 0, (struct sockaddr *) &from, &fromlength); - if (length == -1) { - perror("recvfrom"); - return; - } -ponse->params.agentID, 12 ); - - /* save the clocks -- even though they are not authentic */ - session->agentBoots = response->params.agentBoots; - session->agentTime = response->params.agentTime; - session->agentClock = response->params.agentTime - time(NULL); - - } else { - if (status == STAT_TIMEOUT){ - printf("No Response from %s\n", session->peername); - } else { /* status == STAT_ERROR */ - printf("An error occurred, Quitting\n"); - } - exit( -1 ); - } - - /** freed to early: - snmp_free_pdu(pdu); - if (response) snmp_free_pdu(response); - **/ -} -#if 1 /***/ -/* - * Unlink one element from input request list, - * then free it and it's pdu. - */ -static void -free_one_request(isp, orp) - struct snmp_internal_session *isp; - struct request_list *orp; -{ - struct request_list *rp; - if(! orp) return; - if(isp->requests == orp){ - isp->requests = orp->next_request; /* unlink head */ - } - else{ - for(rp = isp->requests; rp; rp = rp->next_request){ - if(rp->next_request == orp){ - rp->next_request = orp->next_request; /* unlink element */ - break; - } - } - } - if (orp->pdu != NULL){ - snmp_free_pdu(orp->pdu); - } - free((char *)orp); -} -#endif /***/ -/* - * Free each element in the input request list. - */ -static void -free_request_list(rp) - struct request_list *rp; -{ - struct request_list *orp; - - while(rp){ - orp = rp; - rp = rp->next_request; - if (orp->pdu != NULL) - snmp_free_pdu(orp->pdu); - free((char *)orp); - } -} - -/* - * Close the input session. Frees all data allocated for the session, - * dequeues any pending requests, and closes any sockets allocated for - * the session. Returns 0 on error, 1 otherwise. - */ -int -snmp_close(session) - struct snmp_session *session; -{ - struct session_list *slp = NULL, *oslp = NULL; - - if (Sessions->session == session){ /* If first entry */ - slp = Sessions; - Sessions = slp->next; - } else { - for(slp = Sessions; slp; slp = slp->next){ - if (slp->session == session){ - if (oslp) /* if we found entry that points here */ - oslp->next = slp->next; /* link around this entry */ - break; - } - oslp = slp; - } - } - /* If we found the session, free all data associated with it */ - if (slp){ - if (slp->session->community != NULL) - free((char *)slp->session->community); - if(slp->session->peername != NULL) - free((char *)slp->session->peername); - free((char *)slp->session); - if (slp->internal->sd != -1) - close(slp->internal->sd); - free_request_list(slp->internal->requests); - free((char *)slp->internal); - free((char *)slp); - } else { - snmp_errno = SNMPERR_BAD_SESSION; - return 0; - } - return 1; -} - -/* - * Takes a session and a pdu and serializes the ASN PDU into the area - * pointed to by packet. out_length is the size of the data area available. - * Returns the length of the completed packet in out_length. If any errors - * occur, -1 is returned. If all goes well, 0 is returned. - */ -int -snmp_build(session, pdu, packet, out_length, is_agent) - struct snmp_session *session; - struct snmp_pdu *pdu; - u_char *packet; - int *out_length; - int is_agent; -{ - u_char buf[PACKET_LENGTH]; - u_char *cp; - struct variable_list *vp; - int length; - int totallength; - - length = *out_length; - cp = packet; - for(vp = pdu->variables; vp; vp = vp->next_variable){ - cp = snmp_build_var_op(cp, vp->name, &vp->name_length, vp->type, vp->val_len, (u_char *)vp->val.string, &length); - if (cp == NULL) - return -1; - } - totallength = cp - packet; - - length = PACKET_LENGTH; - cp = asn_build_header(buf, &length, (u_char)(ASN_SEQUENCE | ASN_CONSTRUCTOR), totallength); - if (cp == NULL) - return -1; - bcopy((char *)packet, (char *)cp, totallength); - totallength += cp - buf; - - length = *out_length; - if (pdu->command != TRP_REQ_MSG){ - /* request id */ - cp = asn_build_int(packet, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->reqid, sizeof(pdu->reqid)); - if (cp == NULL) - return -1; - /* error status */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->errstat, sizeof(pdu->errstat)); - if (cp == NULL) - return -1; - /* error index */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->errindex, sizeof(pdu->errindex)); - if (cp == NULL) - return -1; - } else { /* this is a trap message */ - /* enterprise */ - cp = asn_build_objid(packet, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_OBJECT_ID), - (oid *)pdu->enterprise, pdu->enterprise_length); - if (cp == NULL) - return -1; - /* agent-addr */ - cp = asn_build_string(cp, &length, (u_char)IPADDRESS, - (u_char *)&pdu->agent_addr.sin_addr.s_addr, sizeof(pdu->agent_addr.sin_addr.s_addr)); - if (cp == NULL) - return -1; - /* generic trap */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->trap_type, sizeof(pdu->trap_type)); - if (cp == NULL) - return -1; - /* specific trap */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->specific_type, sizeof(pdu->specific_type)); - if (cp == NULL) - return -1; - /* timestamp */ - cp = asn_build_int(cp, &length, (u_char)TIMETICKS, - (long *)&pdu->time, sizeof(pdu->time)); - if (cp == NULL) - return -1; - } - if (length < totallength) - return -1; - bcopy((char *)buf, (char *)cp, totallength); - totallength += cp - packet; - - length = PACKET_LENGTH; - cp = asn_build_header(buf, &length, (u_char)pdu->command, totallength); - if (cp == NULL) - return -1; - if (length < totallength) - return -1; - bcopy((char *)packet, (char *)cp, totallength); - totallength += cp - buf; - - length = *out_length; - - cp = snmp_auth_build( packet, &length, session, is_agent, totallength ); - if (cp == NULL) - return -1; - if ((*out_length - (cp - packet)) < totallength) - return -1; - bcopy((char *)buf, (char *)cp, totallength); - totallength += cp - packet; - *out_length = totallength; - - if( session->qoS & USEC_QOS_AUTH ) - md5Digest( packet, totallength, cp - (session->contextLen + 16), - cp - (session->contextLen + 16) ); - - return 0; -} - -/* - * Parses the packet received on the input session, and places the data into - * the input pdu. length is the length of the input packet. If any errors - * are encountered, -1 is returned. Otherwise, a 0 is returned. - */ -static int -snmp_parse(session, pdu, data, length) - struct snmp_session *session; - struct snmp_pdu *pdu; - u_char *data; - int length; -{ - u_char msg_type; - u_char type; - u_char *var_val; - long version; - int len, four; - u_char community[256]; - int community_length = 256; - struct variable_list *vp = 0; - oid objid[MAX_NAME_LEN], *op; - u_char *origdata = data; - int origlength = length; - int ret = 0; - u_char *save_data; - - /* authenticates message and returns length if valid */ - data = snmp_auth_parse(data, &length, community, &community_length, &version); - if (data == NULL) - return -1; - - if( version != SNMP_VERSION_1 && version != SNMP_VERSION_2C && version != SNMP_VERSION_2 ) { - fprintf(stderr, "Wrong version: %ld\n", version); - return -1; - } - - save_data = data; - - data = asn_parse_header(data, &length, &msg_type); - if (data == NULL) - return -1; - pdu->command = msg_type; - - if( session->authenticator ) { - ret = session->authenticator( origdata, origlength, save_data - community_length, - community_length, session, pdu ); - if( ret < 0 ) return ret; - } - - if (pdu->command != TRP_REQ_MSG){ - data = asn_parse_int(data, &length, &type, (long *)&pdu->reqid, sizeof(pdu->reqid)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->errstat, sizeof(pdu->errstat)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->errindex, sizeof(pdu->errindex)); - if (data == NULL) - return -1; - } else { - pdu->enterprise_length = MAX_NAME_LEN; - data = asn_parse_objid(data, &length, &type, objid, &pdu->enterprise_length); - if (data == NULL) - return -1; - pdu->enterprise = (oid *)calloc(1, pdu->enterprise_length * sizeof(oid)); - bcopy((char *)objid, (char *)pdu->enterprise, pdu->enterprise_length * sizeof(oid)); - - four = 4; - data = asn_parse_string(data, &length, &type, (u_char *)&pdu->agent_addr.sin_addr.s_addr, &four); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->trap_type, sizeof(pdu->trap_type)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->specific_type, sizeof(pdu->specific_type)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->time, sizeof(pdu->time)); - if (data == NULL) - return -1; - } - data = asn_parse_header(data, &length, &type); - if (data == NULL) - return -1; - if (type != (u_char)(ASN_SEQUENCE | ASN_CONSTRUCTOR)) - return -1; - while((int)length > 0){ - if (pdu->variables == NULL){ - pdu->variables = vp = (struct variable_list *)calloc(1, sizeof(struct variable_list)); - } else { - vp->next_variable = (struct variable_list *)calloc(1, sizeof(struct variable_list)); - vp = vp->next_variable; - } - vp->next_variable = NULL; - vp->val.string = NULL; - vp->name = NULL; - vp->name_length = MAX_NAME_LEN; - data = snmp_parse_var_op(data, objid, &vp->name_length, &vp->type, &vp->val_len, &var_val, (int *)&length); - if (data == NULL) - return -1; - op = (oid *)calloc(1, (unsigned)vp->name_length * sizeof(oid)); - bcopy((char *)objid, (char *)op, vp->name_length * sizeof(oid)); - vp->name = op; - - len = PACKET_LENGTH; - switch((short)vp->type){ - case ASN_INTEGER: - vp->val.integer = (long *)calloc(1, sizeof(long)); - vp->val_len = sizeof(long); - asn_parse_int(var_val, &len, &vp->type, (long *)vp->val.integer, sizeof(vp->val.integer)); - break; - case COUNTER: - case GAUGE: - case TIMETICKS: - case UINTEGER: - vp->val.integer = (long *)calloc(1, sizeof(unsigned long)); - vp->val_len = sizeof(unsigned long); - asn_parse_unsigned_int(var_val, &len, &vp->type, (unsigned long *)vp->val.integer, sizeof(vp->val.integer)); - break; - case COUNTER64: - vp->val.counter64 = (struct counter64 *)calloc(1, sizeof(struct counter64) ); - vp->val_len = sizeof(struct counter64); - asn_parse_unsigned_int64(var_val, &len, &vp->type, - (struct counter64 *)vp->val.counter64, - sizeof(*vp->val.counter64)); - break; - case ASN_OCTET_STR: - case IPADDRESS: - case OPAQUE: - case NSAP: - vp->val.string = (u_char *)calloc(1, (unsigned)vp->val_len); - asn_parse_string(var_val, &len, &vp->type, vp->val.string, &vp->val_len); - break; - case ASN_OBJECT_ID: - vp->val_len = MAX_NAME_LEN; - asn_parse_objid(var_val, &len, &vp->type, objid, &vp->val_len); - vp->val_len *= sizeof(oid); - vp->val.objid = (oid *)calloc(1, (unsigned)vp->val_len); - bcopy((char *)objid, (char *)vp->val.objid, vp->val_len); - break; - case SNMP_NOSUCHOBJECT: - case SNMP_NOSUCHINSTANCE: - case SNMP_ENDOFMIBVIEW: - case ASN_NULL: - break; - default: - fprintf(stderr, "bad type returned (%x)\n", vp->type); - break; - } - } - return ret; -} - -/* - * Sends the input pdu on the session after calling snmp_build to create - * a serialized packet. If necessary, set some of the pdu data from the - * session defaults. Add a request corresponding to this pdu to the list - * of outstanding requests on this session, then send the pdu. - * Returns the request id of the generated packet if applicable, otherwise 1. - * On any error, 0 is returned. - * The pdu is freed by snmp_send() unless a failure occured. - */ -int -snmp_send(session, pdu) - struct snmp_session *session; - struct snmp_pdu *pdu; -{ - struct session_list *slp; - struct snmp_internal_session *isp = NULL; - u_char packet[PACKET_LENGTH]; - int length = PACKET_LENGTH; - struct request_list *rp; - struct timeval tv; - - for(slp = Sessions; slp; slp = slp->next){ - if (slp->session == session){ - isp = slp->internal; - break; - } - } - - if (! pdu) { - snmp_errno = SNMPERR_GENERR; - return 0; - } - - if (isp == NULL){ - snmp_errno = SNMPERR_BAD_SESSION; - return 0; - } - if (pdu->command == GET_REQ_MSG || pdu->command == GETNEXT_REQ_MSG - || pdu->command == GET_RSP_MSG || pdu->command == SET_REQ_MSG - || pdu->command == GETBULK_REQ_MSG ){ - if (pdu->reqid == SNMP_DEFAULT_REQID) - pdu->reqid = ++Reqid; - if (pdu->errstat == SNMP_DEFAULT_ERRSTAT) - pdu->errstat = 0; - if (pdu->errindex == SNMP_DEFAULT_ERRINDEX) - pdu->errindex = 0; - } else { - /* fill in trap defaults */ - pdu->reqid = 1; /* give a bogus non-error reqid for traps */ - if (pdu->enterprise_length == SNMP_DEFAULT_ENTERPRISE_LENGTH){ - pdu->enterprise = (oid *)calloc(1, sizeof(DEFAULT_ENTERPRISE)); - bcopy((char *)DEFAULT_ENTERPRISE, (char *)pdu->enterprise, sizeof(DEFAULT_ENTERPRISE)); - pdu->enterprise_length = sizeof(DEFAULT_ENTERPRISE)/sizeof(oid);BÐ+= m -È /* 4¨*/ BNMPTÍ8 */cfor testing purposes */e key! replace... - */ - * ÿ¯ùsnmplib/snmp_api.cc.hÿ°…<Ðlib/snmp_api.c~~ñÿ±<ðÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±«=ÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²=0ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²Š=Pÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ³ -=pÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³‚ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×Áÿ³ùÿ´=ø%D(ÿ´_=à\BØÿ´©=˜4BØÿ´ø=ÈHBØÿµB>ÿµ]ÿµmÿµzÿµ >(ÿµ·ÿµÉÿµÖÿµï>@ÿ¶ÿ¶ ÿ¶4ÿ¶Pÿ¶rÿ¶~ÿ¶ˆ0ÿ¶Ÿ4¨ÿ¶·ÿ¶Ù‰èÿ·ÿ·#ÿ·/ÿ·>>Xÿ·V3/usr/people/wessels/.indent.proÿ¯èÿ¯ùÿ° ÿ°ÿ°.ÿ°?ÿ°Mÿ°[ÿ°pÿ°…ÿ°•ÿ°£ÿ°²ÿ°Åÿ°Ûÿ°ñÿ± -ÿ±ÿ±2ÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±™ÿ±«ÿ±ºÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²ÿ²ÿ²2ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²ÿ²Šÿ²™ÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ²öÿ³ -ÿ³ ÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³sÿ³‚ÿ³‘ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×ÿ³çÿ³ùÿ´ÿ´ÿ´ÿ´)ÿ´3ÿ´Cÿ´Oÿ´_ÿ´kÿ´tÿ´ÿ´ÿ´Ÿÿ´©ÿ´·ÿ´Åÿ´Òÿ´Ýÿ´íÿ´øÿµÿµÿµÿµ)ÿµ7ÿµBÿµMÿµ]ÿµmÿµzÿµ‰ÿµ ÿµ«ÿµ·ÿµÉÿµÖÿµâÿµïÿ¶ÿ¶ÿ¶ ÿ¶4ÿ¶?ÿ¶Pÿ¶bÿ¶rÿ¶~ÿ¶ˆÿ¶”ÿ¶Ÿÿ¶«ÿ¶·ÿ¶Éÿ¶Ùÿ¶íÿ·ÿ·ÿ·#ÿ·/ÿ·>ÿ·Lÿ·Vÿ·fÿ·q°>X 4¨ $  @,2ˆ…>X‚àC Ž0   ¸ude/snmp_groupvars.h~ àude/snmp_groupvars.h ŽX Ž€ Ž¨ ŽÐ „©/*********************************************************** - Copyright 1989 by Carnegie Mellon University - - All Rights Reserved - -Permission to use, copy, modify, and distribute this software and its -documentation for any purpose and without fee is hereby granted, -provided that the above copyright notice appear in all copies and that -both that copyright notice and this permission notice appear in -supporting documentation, and that the name of CMU not be -used in advertising or publicity pertaining to distribution of the -software without specific, written prior permission. - -CMU DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING -ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL -CMU BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR -ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, -WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, -ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS -SOFTWARE. -******************************************************************/ -/* - * snmp_api.c - API for access to snmp. - */ -#define DEBUG_SNMPTRACE 0 /* set to 1 to print all SNMP actions */ -#define DEBUG_SNMPFULLDUMP 0 /* set to 1 to dump all SNMP packets */ - -#include -#include -#include -#include -#include -#include -#include -#ifdef linux -#include -#include -#include -#include -#endif - - -#include "asn1.h" -#include "snmp.h" -#include "snmp_impl.h" -#include "snmp_api.h" -#include "snmp_client.h" - -#define PACKET_LENGTH 4500 - -#ifndef BSD4_3 -#define BSD4_2 -#endif - -#if !defined(BSD4_3) && !defined(linux) && !defined(sun) - -typedef long fd_mask; -#define NFDBITS (sizeof(fd_mask) * NBBY) /* bits per mask */ - -#define FD_SET(n, p) ((p)->fds_bits[(n)/NFDBITS] |= (1 << ((n) % NFDBITS))) -#define FD_CLR(n, p) ((p)->fds_bits[(n)/NFDBITS] &= ~(1 << ((n) % NFDBITS))) -#define FD_ISSET(n, p) ((p)->fds_bits[(n)/NFDBITS] & (1 << ((n) % NFDBITS))) -#define FD_ZERO(p) bzero((char *)(p), sizeof(*(p))) -#endif - -oid default_enterprise[] = {1, 3, 6, 1, 4, 1, 3, 1, 1}; /* enterprises.cmu.systems.cmuSNMP */ - -#define DEFAULT_COMMUNITY "public" -#define DEFAULT_REMPORT SNMP_PORT -#define DEFAULT_ENTERPRISE default_enterprise -#define DEFAULT_TIME 0 -#define DEFAULT_MMS 1389 /* large, randomly picked for testing purposes */ - -/* - * Internal information about the state of the snmp session. - */ -struct snmp_internal_session { - int sd; /* socket descriptor for this connection */ - ipaddr addr; /* address of connected peer */ - struct request_list *requests;/* Info about outstanding requests */ -}; - -/* - * A list of all the outstanding requests for a particular session. - */ -struct request_list { - struct request_list *next_request; - u_long request_id; /* request id */ - int retries; /* Number of retries */ - u_long timeout; /* length to wait for timeout */ - struct timeval time; /* Time this request was made */ - struct timeval expire; /* time this request is due to expire */ - struct snmp_pdu *pdu; /* The pdu for this request (saved so it can be retransmitted */ -}; - -/* - * The list of active/open sessions. - */ -struct session_list { - struct session_list *next; - struct snmp_session *session; - struct snmp_internal_session *internal; -}; - -struct session_list *Sessions = NULL; - -u_long Reqid = 0; -int snmp_errno = 0; - -char *api_errors[4] = { - "Unknown session", - "Unknown host", - "Invalid local port", - "Unknown Error" -}; - - -void sync_with_agent(); -int parse_app_community_string(); -void snmp_synch_setup(); -int snmp_synch_response(); -void md5Digest(); - - -static char * -api_errstring(snmp_errnumber) - int snmp_errnumber; -{ - if (snmp_errnumber <= SNMPERR_BAD_SESSION && snmp_errnumber >= SNMPERR_GENERR){ - return api_errors[snmp_errnumber + 4]; - } else { - return "Unknown Error"; - } -} - -#if 0 -/* - * Gets initial request ID for all transactions. - */ -static void -init_snmp(){ - struct timeval tv; - - gettimeofday(&tv, (struct timezone *)0); - srandom(tv.tv_sec ^ tv.tv_usec); - Reqid = random(); -} -#endif - - -/* - * Dump snmp packet to stdout: - */ -static void -snmp_print_packet(packet, length, addr, code) - char *packet; - int length; - ipaddr addr; - int code; -{ - if(length < 0) { - return; - } - if (code <= 0) { /* received */ - printf("\nReceived %4d bytes from ", length); - } - else { /* sending */ - printf("\nSending %4d bytes to ", length); - } - printf("%s:", inet_ntoa(addr.sin_addr)); -#if DEBUG_SNMPFULLDUMP - for (count = 0; count < length; count++) { - if ((count & 15) == 0) { - printf("\n "); - } - printf("%02X ", (int)(packet[count]&255)); - } -#endif - fflush(stdout); -} - -#if DEBUG_SNMPTRACE -/* - * Print request - */ -#define TRACE_SEND (0) -#define TRACE_RECV (1) -#define TRACE_TIMEOUT (2) -static void -snmp_print_trace(slp, rp, code) - struct session_list *slp; - struct request_list *rp; - int code; -{ - int reqid=0, retries=1; - if( rp ){ - reqid = rp->request_id; - retries = rp->retries; - } - printf("\n Session %2d ReqId %4d ", slp->internal->sd, reqid); - switch(code) - { - case TRACE_SEND: printf("send pdu (%d)", retries);break; - case TRACE_RECV: printf("recv pdu");break; - case TRACE_TIMEOUT: printf("time out");break; - } - fflush(stdout); -} -#endif /* DEBUG_SNMPTRACE */ - - - - -/* - * Sets up the session with the snmp_session information provided - * by the user. Then opens and binds the necessary UDP port. - * A handle to the created session is returned (this is different than - * the pointer passed to snmp_open()). On any error, NULL is returned - * and snmp_errno is set to the appropriate error code. - */ -struct snmp_session * -snmp_open(session) - struct snmp_session *session; -{ - struct session_list *slp; - struct snmp_internal_session *isp; - u_char *cp; - int sd; - u_long addr; - struct sockaddr_in me; - struct hostent *hp; - struct servent *servp; - extern int check_received_pkt(); - - /* Copy session structure and link into list */ - slp = (struct session_list *)calloc(1, sizeof(struct session_list)); - slp->internal = isp = (struct snmp_internal_session *)calloc(1, sizeof(struct snmp_internal_session)); - bzero((char *)isp, sizeof(struct snmp_internal_session)); - slp->internal->sd = -1; /* mark it not set */ - slp->session = (struct snmp_session *)calloc(1, sizeof(struct snmp_session)); - bcopy((char *)session, (char *)slp->session, sizeof(struct snmp_session)); - session = slp->session; - /* now link it in. */ - slp->next = Sessions; - Sessions = slp; - - /* - * session now points to the new structure that still contains pointers to - * data allocated elsewhere. Some of this data is copied to space malloc'd - * here, and the pointer replaced with the new one. - */ - - if (session->peername != NULL){ - cp = (u_char *)calloc(1, (unsigned)strlen(session->peername) + 1); - strcpy((char *)cp, session->peername); - session->peername = (char *)cp; - } - - if (session->retries == SNMP_DEFAULT_RETRIES) - session->retries = SNMP_API_DEFAULT_RETRIES; - if (session->timeout == SNMP_DEFAULT_TIMEOUT) - session->timeout = SNMP_API_DEFAULT_TIMEOUT; - if (session->MMS == 0 ) - session->MMS = DEFAULT_MMS; - isp->requests = NULL; - - - /* Fill in defaults if necessary */ - if (session->community_len != SNMP_DEFAULT_COMMUNITY_LEN){ - if( *session->community == '+' ) { - session->community_len--; - cp = (u_char *) calloc(1, (unsigned) session->community_len); - bcopy((char *) session->community+1, (char *)cp, - session->community_len); - session->version = SNMP_VERSION_2C; - } else { - cp = (u_char *) calloc(1, (unsigned) session->community_len); - bcopy((char *) session->community, (char *) cp, - session->community_len); - } - - } else { - session->community_len = strlen(DEFAULT_COMMUNITY); - cp = (u_char *)calloc(1, (unsigned)session->community_len); - bcopy((char *)DEFAULT_COMMUNITY, (char *)cp, session->community_len); - } - - /* Set up connections */ - sd = socket(AF_INET, SOCK_DGRAM, 0); - if (sd < 0){ - perror("socket"); - snmp_errno = SNMPERR_GENERR; - if (!snmp_close(session)){ - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", api_errstring(snmp_errno)); - exit(1); - } - return 0; - } - isp->sd = sd; - - if (session->peername != SNMP_DEFAULT_PEERNAME){ - if ((addr = inet_addr(session->peername)) != -1){ - bcopy((char *)&addr, (char *)&isp->addr.sin_addr, sizeof(isp->addr.sin_addr)); - } else { - hp = gethostbyname(session->peername); - if (hp == NULL){ - fprintf(stderr, "unknown host: %s\n", session->peername); - snmp_errno = SNMPERR_BAD_ADDRESS; - if (!snmp_close(session)){ - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", api_errstring(snmp_errno)); - exit(2); - } - return 0; - } else { - bcopy((char *)hp->h_addr, (char *)&isp->addr.sin_addr, hp->h_length); - } - } - isp->addr.sin_family = AF_INET; - if (session->remote_port == SNMP_DEFAULT_REMPORT){ - /*servp = getservbyname("snmp", "udp");*/ - servp=NULL; - if (servp != NULL){ - isp->addr.sin_port = servp->s_port; - } else { - isp->addr.sin_port = htons(SNMP_PORT); - } - } else { - isp->addr.sin_port = htons(session->remote_port); - } - } else { - isp->addr.sin_addr.s_addr = SNMP_DEFAULT_ADDRESS; - } - - me.sin_family = AF_INET; - me.sin_addr.s_addr = INADDR_ANY; - me.sin_port = htons(session->local_port); - if (bind(sd, (struct sockaddr *)&me, sizeof(me)) != 0){ - perror("bind"); - snmp_errno = SNMPERR_BAD_LOCPORT; - if (! snmp_close(session)){ - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", - api_errstring(snmp_errno)); - exit(3); - } - return 0; - } - - if( *cp == '/' ) { - session->authenticator = check_received_pkt; - sync_with_agent(session); - parse_app_community_string( session ); - session->qoS |= USEC_QOS_GENREPORT; - } - - /* replace comm pointer with pointer to new data: */ - session->community = cp; - - return session; -} - -void -sync_with_agent( session ) -struct snmp_session *session; -{ - struct snmp_pdu *pdu, *response = 0; - int status; - - session->qoS = USEC_QOS_GENREPORT; - session->userLen = 6; - session->version = SNMP_VERSION_2; - strcpy( session->userName, "public" ); - - snmp_synch_setup(session); - pdu = snmp_pdu_create(GET_REQ_MSG); - status = snmp_synch_response(session, pdu, &response); - - if (status == STAT_SUCCESS){ - memcpy( session->agentID, response->params.agentID, 12 ); - - /* save the clocks -- even though they are not authentic */ - session->agentBoots = response->params.agentBoots; - session->agentTime = response->params.agentTime; - session->agentClock = response->params.agentTime - time(NULL); - - } else { - if (status == STAT_TIMEOUT){ - printf("No Response from %s\n", session->peername); - } else { /* status == STAT_ERROR */ - printf("An error occurred, Quitting\n"); - } - exit( -1 ); - } - - /** freed to early: - snmp_free_pdu(pdu); - if (response) snmp_free_pdu(response); - **/ -} -#if 1 /***/ -/* - * Unlink one element from input request list, - * then free it and it's pdu. - */ -static void -free_one_request(isp, orp) - struct snmp_internal_session *isp; - struct request_list *orp; -{ - struct request_list *rp; - if(! orp) return; - if(isp->requests == orp){ - isp->requests = orp->next_request; /* unlink head */ - } - else{ - for(rp = isp->requests; rp; rp = rp->next_request){ - if(rp->next_request == orp){ - rp->next_request = orp->next_request; /* unlink element */ - break; - } - } - } - if (orp->pdu != NULL){ - snmp_free_pdu(orp->pdu); - } - free((char *)orp); -} -#endif /***/ -/* - * Free each element in the input request list. - */ -static void -free_request_list(rp) - struct request_list *rp; -{ - struct request_list *orp; - - while(rp){ - orp = rp; - rp = rp->next_request; - if (orp->pdu != NULL) - snmp_free_pdu(orp->pdu); - free((char *)orp); - } -} - -/* - * Close the input session. Frees all data allocated for the session, - * dequeues any pending requests, and closes any sockets allocated for - * the session. Returns 0 on error, 1 otherwise. - */ -int -snmp_close(session) - struct snmp_session *session; -{ - struct session_list *slp = NULL, *oslp = NULL; - - if (Sessions->session == session){ /* If first entry */ - slp = Sessions; - Sessions = slp->next; - } else { - for(slp = Sessions; slp; slp = slp->next){ - if (slp->session == session){ - if (oslp) /* if we found entry that points here */ - oslp->next = slp->next; /* link around this entry */ - break; - } - oslp = slp; - } - } - /* If we found the session, free all data associated with it */ - if (slp){ - if (slp->session->community != NULL) - free((char *)slp->session->community); - if(slp->session->peername != NULL) - free((char *)slp->session->peername); - free((char *)slp->session); - if (slp->internal->sd != -1) - close(slp->internal->sd); - free_request_list(slp->internal->requests); - free((char *)slp->internal); - free((char *)slp); - } else { - snmp_errno = SNMPERR_BAD_SESSION; - return 0; - } - return 1; -} - -/* - * Takes a session and a pdu and serializes the ASN PDU into the area - * pointed to by packet. out_length is the size of the data area available. - * Returns the length of the completed packet in out_length. If any errors - * occur, -1 is returned. If all goes well, 0 is returned. - */ -int -snmp_build(session, pdu, packet, out_length, is_agent) - struct snmp_session *session; - struct snmp_pdu *pdu; - u_char *packet; - int *out_length; - int is_agent; -{ - u_char buf[PACKET_LENGTH]; - u_char *cp; - struct variable_list *vp; - int length; - int totallength; - - length = *out_length; - cp = packet; - for(vp = pdu->variables; vp; vp = vp->next_variable){ - cp = snmp_build_var_op(cp, vp->name, &vp->name_length, vp->type, vp->val_len, (u_char *)vp->val.string, &length); - if (cp == NULL) - return -1; - } - totallength = cp - packet; - - length = PACKET_LENGTH; - cp = asn_build_header(buf, &length, (u_char)(ASN_SEQUENCE | ASN_CONSTRUCTOR), totallength); - if (cp == NULL) - return -1; - bcopy((char *)packet, (char *)cp, totallength); - totallength += cp - buf; - - length = *out_length; - if (pdu->command != TRP_REQ_MSG){ - /* request id */ - cp = asn_build_int(packet, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->reqid, sizeof(pdu->reqid)); - if (cp == NULL) - return -1; - /* error status */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->errstat, sizeof(pdu->errstat)); - if (cp == NULL) - return -1; - /* error index */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->errindex, sizeof(pdu->errindex)); - if (cp == NULL) - return -1; - } else { /* this is a trap message */ - /* enterprise */ - cp = asn_build_objid(packet, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_OBJECT_ID), - (oid *)pdu->enterprise, pdu->enterprise_length); - if (cp == NULL) - return -1; - /* agent-addr */ - cp = asn_build_string(cp, &length, (u_char)IPADDRESS, - (u_char *)&pdu->agent_addr.sin_addr.s_addr, sizeof(pdu->agent_addr.sin_addr.s_addr)); - if (cp == NULL) - return -1; - /* generic trap */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->trap_type, sizeof(pdu->trap_type)); - if (cp == NULL) - return -1; - /* specific trap */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->specific_type, sizeof(pdu->specific_type)); - if (cp == NULL) - return -1; - /* timestamp */ - cp = asn_build_int(cp, &length, (u_char)TIMETICKS, - (long *)&pdu->time, sizeof(pdu->time)); - if (cp == NULL) - return -1; - } - if (length < totallength) - return -1; - bcopy((char *)buf, (char *)cp, totallength); - totallength += cp - packet; - - length = PACKET_LENGTH; - cp = asn_build_header(buf, &length, (u_char)pdu->command, totallength); - if (cp == NULL) - return -1; - if (length < totallength) - return -1; - bcopy((char *)packet, (char *)cp, totallength); - totallength += cp - buf; - - length = *out_length; - - cp = snmp_auth_build( packet, &length, session, is_agent, totallength ); - if (cp == NULL) - return -1; - if ((*out_length - (cp - packet)) < totallength) - return -1; - bcopy((char *)buf, (char *)cp, totallength); - totallength += cp - packet; - *out_length = totallength; - - if( session->qoS & USEC_QOS_AUTH ) - md5Digest( packet, totallength, cp - (session->contextLen + 16), - cp - (session->contextLen + 16) ); - - return 0; -} - -/* - * Parses the packet received on the input session, and places the data into - * the input pdu. length is the length of the input packet. If any errors - * are encountered, -1 is returned. Otherwise, a 0 is returned. - */ -static int -snmp_parse(session, pdu, data, length) - struct snmp_session *session; - struct snmp_pdu *pdu; - u_char *data; - int length; -{ - u_char msg_type; - u_char type; - u_char *var_val; - long version; - int len, four; - u_char community[256]; - int community_length = 256; - struct variable_list *vp = 0; - oid objid[MAX_NAME_LEN], *op; - u_char *origdata = data; - int origlength = length; - int ret = 0; - u_char *save_data; - - /* authenticates message and returns length if valid */ - data = snmp_auth_parse(data, &length, community, &community_length, &version); - if (data == NULL) - return -1; - - if( version != SNMP_VERSION_1 && version != SNMP_VERSION_2C && version != SNMP_VERSION_2 ) { - fprintf(stderr, "Wrong version: %ld\n", version); - return -1; - } - - save_data = data; - - data = asn_parse_header(data, &length, &msg_type); - if (data == NULL) - return -1; - pdu->command = msg_type; - - if( session->authenticator ) { - ret = session->authenticator( origdata, origlength, save_data - community_length, - community_length, session, pdu ); - if( ret < 0 ) return ret; - } - - if (pdu->command != TRP_REQ_MSG){ - data = asn_parse_int(data, &length, &type, (long *)&pdu->reqid, sizeof(pdu->reqid)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->errstat, sizeof(pdu->errstat)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->errindex, sizeof(pdu->errindex)); - if (data == NULL) - return -1; - } else { - pdu->enterprise_length = MAX_NAME_LEN; - data = asn_parse_objid(data, &length, &type, objid, &pdu->enterprise_length); - if (data == NULL) - return -1; - pdu->enterprise = (oid *)calloc(1, pdu->enterprise_length * sizeof(oid)); - bcopy((char *)objid, (char *)pdu->enterprise, pdu->enterprise_length * sizeof(oid)); - - four = 4; - data = asn_parse_string(data, &length, &type, (u_char *)&pdu->agent_addr.sin_addr.s_addr, &four); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->trap_type, sizeof(pdu->trap_type)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->specific_type, sizeof(pdu->specific_type)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->time, sizeof(pdu->time)); - if (data == NULL) - return -1; - } - data = asn_parse_header(data, &length, &type); - if (data == NULL) - return -1; - if (type != (u_char)(ASN_SEQUENCE | ASN_CONSTRUCTOR)) - return -1; - while((int)length > 0){ - if (pdu->variables == NULL){ - pdu->variables = vp = (struct variable_list *)calloc(1, sizeof(struct variable_list)); - } else { - vp->next_variable = (struct variable_list *)calloc(1, sizeof(struct variable_list)); - vp = vp->next_variable; - } - vp->next_variable = NULL; - vp->val.string = NULL; - vp->name = NULL; - vp->name_length = MAX_NAME_LEN; - data = snmp_parse_var_op(data, objid, &vp->name_length, &vp->type, &vp->val_len, &var_val, (int *)&length); - if (data == NULL) - return -1; - op = (oid *)calloc(1, (unsigned)vp->name_length * sizeof(oid)); - bcopy((char *)objid, (char *)op, vp->name_length * sizeof(oid)); - vp->name = op; - - len = PACKET_LENGTH; - switch((short)vp->type){ - case ASN_INTEGER: - vp->val.integer = (long *)calloc(1, sizeof(long)); - vp->val_len = sizeof(long); - asn_parse_int(var_val, &len, &vp->type, (long *)vp->val.integer, sizeof(vp->val.integer)); - break; - case COUNTER: - case GAUGE: - case TIMETICKS: - case UINTEGER: - vp->val.integer = (long *)calloc(1, sizeof(unsigned long)); - vp->val_len = sizeof(unsigned long); - asn_parse_unsigned_int(var_val, &len, &vp->type, (unsigned long *)vp->val.integer, sizeof(vp->val.integer)); - break; - case COUNTER64: - vp->val.counter64 = (struct counter64 *)calloc(1, sizeof(struct counter64) ); - vp->val_len = sizeof(struct counter64); - asn_parse_unsigned_int64(var_val, &len, &vp->type, - (struct counter64 *)vp->val.counter64, - sizeof(*vp->val.counter64)); - break; - case ASN_OCTET_STR: - case IPADDRESS: - case OPAQUE: - case NSAP: - vp->val.string = (u_char *)calloc(1, (unsigned)vp->val_len); - asn_parse_string(var_val, &len, &vp->type, vp->val.string, &vp->val_len); - break; - case ASN_OBJECT_ID: - vp->val_len = MAX_NAME_LEN; - asn_parse_objid(var_val, &len, &vp->type, objid, &vp->val_len); - vp->val_len *= sizeof(oid); - vp->val.objid = (oid *)calloc(1, (unsigned)vp->val_len); - bcopy((char *)objid, (char *)vp->val.objid, vp->val_len); - break; - case SNMP_NOSUCHOBJECT: - case SNMP_NOSUCHINSTANCE: - case SNMP_ENDOFMIBVIEW: - case ASN_NULL: - break; - default: - fprintf(stderr, "bad type returned (%x)\n", vp->type); - break; - } - } - return ret; -} - -/* - * Sends the input pdu on the session after calling snmp_build to create - * a serialized packet. If necessary, set some of the pdu data from the - * session defaults. Add a request corresponding to this pdu to the list - * of outstanding requests on this session, then send the pdu. - * Returns the request id of the generated packet if applicable, otherwise 1. - * On any error, 0 is returned. - * The pdu is freed by snmp_send() unless a failure occured. - */ -int -snmp_send(session, pdu) - struct snmp_session *session; - struct snmp_pdu *pdu; -{ - struct session_list *slp; - struct snmp_internal_session *isp = NULL; - u_char packet[PACKET_LENGTH]; - int length = PACKET_LENGTH; - struct request_list *rp; - struct timeval tv; - - for(slp = Sessions; slp; slp = slp->next){ - if (slp->session == session){ - isp = slp->internal; - break; - } - } - - if (! pdu) { - snmp_errno = SNMPERR_GENERR; - return 0; - } - - if (isp == NULL){ - snmp_errno = SNMPERR_BAD_SESSION; - return 0; - } - if (pdu->command == GET_REQ_MSG || pdu->command == GETNEXT_REQ_MSG - || pdu->command == GET_RSP_MSG || pdu->command == SET_REQ_MSG - || pdu->command == GETBULK_REQ_MSG ){ - if (pdu->reqid == SNMP_DEFAULT_REQID) - pdu->reqid = ++Reqid; - if (pdu->errstat == SNMP_DEFAULT_ERRSTAT) - pdu->errstat = 0; - if (pdu->errindex == SNMP_DEFAULT_ERRINDEX) - pdu->errindex = 0; - } else { - /* fill in trap defaults */ - pdu->reqid = 1; /* give a bogus non-error reqid for traps */ - if (pdu->enterprise_length == SNMP_DEFAULT_ENTERPRISE_LENGTH){ - pdu->enterprise = (oid *)calloc(1, sizeof(DEFAULT_ENTERPRISE)); - bcopy((char *)DEFAULT_ENTERPRISE, (char *)pdu->enterprise, sizeof(DEFAULT_ENTERPRISE)); - pdu->enterprise_length = sizeof(DEFAULT_ENTERPRISE)/sizeof(oid); - } - if (pdu->time == SNMP_DEFAULT_TIME) - pdu->time = DEFAULT_TIME; - } - if (pdu->address.sin_addr.s_addr == SNMP_DEFAULT_ADDRESS){ - if (isp->addr.sin_addr.s_addr != SNMP_DEFAULT_ADDRESS){ - bcopy((char *)&isp->addr, (char *)&pdu->address, sizeof(pdu->address)); - } else { - fprintf(stderr, "No remote IP address specified\n"); - snmp_errno = SNMPERR_BAD_ADDRESS; - return 0; - } - } - - - if (snmp_build(session, pdu, packet, &length, 0) < 0){ - fprintf(stderr, "Error building packet\n"); - snmp_errno = SNMPERR_GENERR; - return 0; - } -#if 1 /***/ - if (snmp_dump_packet){ - snmp_print_packet(packet, length, pdu->address, 1); - } -#endif /***/ - - gettimeofday(&tv, (struct timezone *)0); - if (sendto(isp->sd, (char *)packet, length, 0, (struct sockaddr *)&pdu->address, sizeof(pdu->address)) < 0){ - perror("sendto"); - snmp_errno = SNMPERR_GENERR; - return 0; - } - if (pdu->command == GET_REQ_MSG || pdu->command == GETNEXT_REQ_MSG - || pdu->command == SET_REQ_MSG || pdu->command == GETBULK_REQ_MSG ){ - /* set up to expect a response */ - rp = (struct request_list *)calloc(1, sizeof(struct request_list)); -#if 1 /***/ - if(! rp){ - fprintf(stderr, "Out of memory!\n"); - snmp_errno = SNMPERR_GENERR; - return 0; - } -#endif /***/ - rp->next_request = isp->requests; - isp->requests = rp; - rp->pdu = pdu; - rp->request_id = pdu->reqid; - - rp->retries = 1; - rp->timeout = session->timeout; - rp->time = tv; - tv.tv_usec += rp->timeout; - tv.tv_sec += tv.tv_usec / 1000000L; - tv.tv_usec %= 1000000L; - rp->expire = tv; -#if DEBUG_SNMPTRACE - snmp_print_trace(slp, rp, TRACE_SEND); -#endif - } - return pdu->reqid; -} - -/* - * Frees the pdu and any malloc'd data associated with it. - */ -void -snmp_free_pdu(struct snmp_pdu * pdu) -{ - struct variable_list *vp, *ovp; - - if (! pdu) - return; - - vp = pdu->variables; - while(vp){ - if (vp->name) { - free((char *)vp->name); - } - if (vp->val.string) { - free((char *)vp->val.string); - } - ovp = vp; - vp = vp->next_variable; - free((char *)ovp); - } - if (pdu->enterprise) { - free((char *)pdu->enterprise); - } - free((char *)pdu); -} - - -/* - * Checks to see if any of the fd's set in the fdset belong to - * snmp. Each socket with it's fd set has a packet read from it - * and snmp_parse is called on the packet received. The resulting pdu - * is passed to the callback routine for that session. If the callback - * routine returns successfully, the pdu and it's request are deleted. - */ -void -snmp_read(fdset) - fd_set *fdset; -{ - struct session_list *slp; - struct snmp_session *sp; - struct snmp_internal_session *isp; - u_char packet[PACKET_LENGTH]; - struct sockaddr_in from; - ssize_t length, fromlength; - struct snmp_pdu *pdu; - struct request_list *rp /**, *orp **/ ; - - for(slp = Sessions; slp; slp = slp->next){ - if (FD_ISSET(slp->internal->sd, fdset)){ - sp = slp->session; - isp = slp->internal; - fromlength = sizeof(from); - length = recvfrom(isp->sd, (char *)packet, PACKET_LENGTH, 0, (struct sockaddr *)&from, &fromlength); - if (length == -1) { - perror("recvfrom"); - return; - } -#if 1 /***/ - if (snmp_dump_packet) { - snmp_print_packet(packet, length, from, 0); - } - pdu = (struct snmp_pdu *) calloc(1, sizeof(struct snmp_pdu)); - - if (!pdu) { - fprintf(stderr, "Out of memory!\n"); - snmp_errno = SNMPERR_GENERR; - return; - } -#endif/***/ if we found entry that points here */ - oslp e key! replace... - */ - * ÿ¯ùsnmplib/snmp_api.cc.hÿ°…<Ðlib/snmp_api.c~~ñÿ±<ðÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±«=ÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²=0ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²Š=Pÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ³ -=pÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³‚ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×Áÿ³ùÿ´=ø%D(ÿ´_=à\BØÿ´©=˜4BØÿ´ø=ÈHBØÿµB>ÿµ]ÿµmÿµzÿµ >(ÿµ·ÿµÉÿµÖÿµï>@ÿ¶ÿ¶ ÿ¶4ÿ¶Pÿ¶rÿ¶~ÿ¶ˆ0ÿ¶Ÿ‚àÿ¶·ÿ¶Ù4¨ÿ·ÿ·#ÿ·/ÿ·>>Xÿ·V3/usr/people/wessels/.indent.proÿ¯èÿ¯ùÿ° ÿ°ÿ°.ÿ°?ÿ°Mÿ°[ÿ°pÿ°…ÿ°•ÿ°£ÿ°²ÿ°Åÿ°Ûÿ°ñÿ± -ÿ±ÿ±2ÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±™ÿ±«ÿ±ºÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²ÿ²ÿ²2ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²ÿ²Šÿ²™ÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ²öÿ³ -ÿ³ ÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³sÿ³‚ÿ³‘ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×ÿ³çÿ³ùÿ´ÿ´ÿ´ÿ´)ÿ´3ÿ´Cÿ´Oÿ´_ÿ´kÿ´tÿ´ÿ´ÿ´Ÿÿ´©ÿ´·ÿ´Åÿ´Òÿ´Ýÿ´íÿ´øÿµÿµÿµÿµ)ÿµ7ÿµBÿµMÿµ]ÿµmÿµzÿµ‰ÿµ ÿµ«ÿµ·ÿµÉÿµÖÿµâÿµïÿ¶ÿ¶ÿ¶ ÿ¶4ÿ¶?ÿ¶Pÿ¶bÿ¶rÿ¶~ÿ¶ˆÿ¶”ÿ¶Ÿÿ¶«ÿ¶·ÿ¶Éÿ¶Ùÿ¶íÿ·ÿ·ÿ·#ÿ·/ÿ·>ÿ·Lÿ·Vÿ·fÿ·q@ pdu->time = DEFAULT_TIME; - } - if (pdu->address.sin_addr.s_addr == SNMP_DEFAULT_ADDRESS){ - if (isp->addr.sin_addr.s_addr != SNMP_DEFAULT_ADDRESS){ - bcopy((char *)&isp->addr, (char *)&pdu->address, sizeof(pdu->address)); - } else { - fprintf(stderr, "No remote IP address specified\n"); - snmp_errno = SNMPERR_BAD_ADDRESS; - return 0; - } - } - - - if (snmp_build(session, pdu, packet, &length, 0) < 0){ - fprintf(stderr, "Error building packet\n"); - snmp_errno = SNMPERR_GENERR; - return 0; - } -#if 1 /***/ - if (snmp_dump_packet){ - snmp_print_packet(packet, length, pdu->address, 1); - } -#endif /***/ - - gettimeofday(&tv, (struct timezone *)0); - if (sendto(isp->sd, (char *)packet, length, 0, (struct sockaddr *)&pdu->address, sizeof(pdu->address)) < 0){ - perror("sendto"); - snmp_errno = SNMPERR_GENERR; - return 0; - } - if (pdu->command == GET_REQ_MSG || pdu->command == GETNEXT_REQ_MSG - || pdu->command == SET_REQ_MSG || pdu->command == GETBULK_REQ_MSG ){ - /* set up to expect a response */ - rp = (struct request_list *)calloc(1, sizeof(struct request_list)); -#if 1 /***/ - if(! rp){ - fprintf(stderr, "Out of memory!\n"); - snmp_errno = SNMPERR_GENERR; - return 0; - } -#endif /***/ - rp->next_request = isp->requests; - isp->requests = rp; - rp->pdu = pdu; - rp->request_id = pdu->reqid; - - rp->retries = 1; - rp->timeout = session->timeout; - rp->time = tv; - tv.tv_usec += rp->timeout; - tv.tv_sec += tv.tv_usec / 1000000L; - tv.tv_usec %= 1000000L; - rp->expire = tv; -#if DEBUG_SNMPTRACE - snmp_print_trace(slp, rp, TRACE_SEND); -#endif - } - return pdu->reqid; -} - -/* - * Frees the pdu and any malloc'd data associated with it. - */ -void -snmp_free_pdu(struct snmp_pdu * pdu) -{ - struct variable_list *vp, *ovp; - - if (! pdu) - return; - - vp = pdu->variables; - while(vp){ - if (vp->name) { - free((char *)vp->name); - } - if (vp->val.string) { - free((char *)vp->val.string); - } - ovp = vp; - vp = vp->next_variable; - free((char *)ovp); - } - if (pdu->enterprise) { - free((char *)pdu->enterprise); - } - free((char *)pdu); -} - - -/* - * Checks to see if any of the fd's set in the fdset belong to - * snmp. Each socket with it's fd set has a packet read from it - * and snmp_parse is called on the packet received. The resulting pdu - * is passed to the callback routine for that session. If the callback - * routine returns successfully, the pdu and it's request are deleted. - */ -void -snmp_read(fdset) - fd_set *fdset; -{ - struct session_list *slp; - struct snmp_session *sp; - struct snmp_internal_session *isp; - u_char packet[PACKET_LENGTH]; - struct sockaddr_in from; - ssize_t length, fromlength; - struct snmp_pdu *pdu; - struct request_list *rp /**, *orp **/ ; - - for(slp = Sessions; slp; slp = slp->next){ - if (FD_ISSET(slp->internal->sd, fdset)){ - sp = slp->session; - isp = slp->internal; - fromlength = sizeof(from); - length = recvfrom(isp->sd, (char *)packet, PACKET_LENGTH, 0, (struct sockaddr *)&from, &fromlength); - if (length == -1) { - perror("recvfrom"); - return; - } -#if 1 /***/ - if (snmp_dump_packet) { - snmp_print_packet(packet, length, from, 0); - } - pdu = (struct snmp_pdu *) calloc(1, sizeof(struct snmp_pdu)); - - if (!pdu) { - fprintf(stderr, "Out of memory!\n"); - snmp_errno = SNMPERR_GENERR; - return; - } - == STAT_TIMEOUT){ - printf("No Response from %s\n", session->peername); - } else { /* status == STAT_ERROR */ - printf("An error occurred, Quitting\n"); - } - exit( -1 ); - } - - /** freed to early: - snmp_free_pdu(pdu); - if (response) snmp_free_pdu(response); - **/ -} -#if 1 /***/ -/* - * Unlink one element from input request list, - * then free it and it's pdu. - */ -static void -free_one_request(isp, orp) - struct snmp_internal_session *isp; - struct request_list *orp; -{ - struct request_list *rp; - if(! orp) return; - if(isp->requests == orp){ - isp->requests = orp->next_request; /* unlink head */ - } - else{ - for(rp = isp->requests; rp; rp = rp->next_request){ - if(rp->next_request == orp){ - rp->next_request = orp->next_request; /* unlink element */ - break; - } - } - } - if (orp->pdu != NULL){ - snmp_free_pdu(orp->pdu); - } - free((char *)orp); -} -#endif /***/ -/* - * Free each element in the input request list. - */ -static void -free_request_list(rp) - struct request_list *rp; -{ - struct request_list *orp; - - while(rp){ - orp = rp; - rp = rp->next_request; - if (orp->pdu != NULL) - snmp_free_pdu(orp->pdu); - free((char *)orp); - } -} - -/* - * Close the input session. Frees all data allocated for the session, - * dequeues any pending requests, and closes any sockets allocated for - * the session. Returns 0 on error, 1 otherwise. - */ -int -snmp_close(session) - struct snmp_session *session; -{ - struct session_list *slp = NULL, *oslp = NULL; - - if (Sessions->session == session){ /* If first entry */ - slp = Sessions; - Sessions = slp->next; - } else { - for(slp = Sessions; slp; slp = slp->next){ - if (slp->session == session){ - if (oslp) /* if we found entry that points here */ - oslp->next = slp->next; /* link around this entry */ - break; - } - oslp = slp; - } - } - /* If we found the session, free all data associated with it */ - if (slp){ - if (slp->session->community != NULL) - free((char *)slp->session->community); - if(slp->session->peername != NULL) - free((char *)slp->session->peername); - free((char *)slp->session); - if (slp->internal->sd != -1) - close(slp->internal->sd); - free_request_list(slp->internal->requests); - free((char *)slp->internal); - free((char *)slp); - } else { - snmp_errno = SNMPERR_BAD_SESSION; - return 0; - } - return 1; -} - -/* - * Takes a session and a pdu and serializes the ASN PDU into the area - * pointed to by packet. out_length is the size of the data area available. - * Returns the length of the completed packet in out_length. If any errors - * occur, -1 is returned. If all goes well, 0 is returned. - */ -int -snmp_build(session, pdu, packet, out_length, is_agent) - struct snmp_session *session; - struct snmp_pdu *pdu; - u_char *packet; - int *out_length; - int is_agent; -{ - u_char buf[PACKET_LENGTH]; - u_char *cp; - struct variable_list *vp; - int length; - int totallength; - - length = *out_length; - cp = packet; - for(vp = pdu->variables; vp; vp = vp->next_variable){ - cp = snmp_build_var_op(cp, vp->name, &vp->name_length, vp->type, vp->val_len, (u_char *)vp->val.string, &length); - if (cp == NULL) - return -1; - } - totallength = cp - packet; - - length = PACKET_LENGTH; - cp = asn_build_header(buf, &length, (u_char)(ASN_SEQUENCE | ASN_CONSTRUCTOR), totallength); - if (cp == NULL) - return -1; - bcopy((char *)packet, (char *)cp, totallength); - totallength += cp - buf; - - length = *out_length; - if (pdu->command != TRP_REQ_MSG){ - /* request id */ - cp = asn_build_int(packet, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->reqid, sizeof(pdu->reqid)); - if (cp == NULL) - return -1; - /* error status */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->errstat, sizeof(pdu->errstat)); - if (cp == NULL) - return -1; - /* error index */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->errindex, sizeof(pdu->errindex)); - if (cp == NULL) - return -1; - } else { /* this is a trap message */ - /* enterprise */ - cp = asn_build_objid(packet, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_OBJECT_ID), - (oid *)pdu->enterprise, pdu->enterprise_length); - if (cp == NULL) - return -1; - /* agent-addr */ - cp = asn_build_string(cp, &length, (u_char)IPADDRESS, - (u_char *)&pdu->agent_addr.sin_addr.s_addr, sizeof(pdu->agent_addr.sin_addr.s_addr)); - if (cp == NULL) - return -1; - /* generic trap */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->trap_type, sizeof(pdu->trap_type)); - if (cp == NULL) - return -1; - /* specific trap */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->specific_type, sizeof(pdu->specific_type)); - if (cp == NULL) - return -1; - /* timestamp */ - cp = asn_build_int(cp, &length, (u_char)TIMETICKS, - (long *)&pdu->time, sizeof(pdu->time)); - if (cp == NULL) - return -1; - } - if (length < totallength) - return -1; - bcopy((char *)buf, (char *)cp, totallength); - totallength += cp - packet; - - length = PACKET_LENGTH; - cp = asn_build_header(buf, &length, (u_char)pdu->command, totallength); - if (cp == NULL) - return -1; - if (length < totallength) - return -1; - bcopy((char *)packet, (char *)cp, totallength); - totallength += cp - buf; - - length = *out_length; - - cp = snmp_auth_build( packet, &length, session, is_agent, totallength ); - if (cp == NULL) - return -1; - if ((*out_length - (cp - packet)) < totallength) - return -1; - bcopy((char *)buf, (char *)cp, totallength); - totallength += cp - packet; - *out_length = totallength; - - if( session->qoS & USEC_QOS_AUTH ) - md5Digest( packet, totallength, cp - (session->contextLen + 16), - cp - (session->contextLen + 16) ); - - return 0; -} - -/* - * Parses the packet received on the input session, and places the data into - * the input pdu. length is the length of the input packet. If any errors - * are encountered, -1 is returned. Otherwise, a 0 is returned. - */ -static int -snmp_parse(session, pdu, data, length) - struct snmp_session *session; - struct snmp_pdu *pdu; - u_char *data; - int length; -{ - u_char msg_type; - u_char type; - u_char *var_val; - long version; - int len, four; - u_char community[256]; - int community_length = 256; - struct variable_list *vp = 0; - oid objid[MAX_NAME_LEN], *op; - u_char *origdata = data; - int origlength = length; - int ret = 0; - u_char *save_data; - - /* authenticates message and returns length if valid */ - data = snmp_auth_parse(data, &length, community, &community_length, &version); - if (data == NULL) - return -1; - - if( version != SNMP_VERSION_1 && version != SNMP_VERSION_2C && version != SNMP_VERSION_2 ) { - fprintf(stderr, "Wrong version: %ld\n", version); - return -1; - } - - save_data = data; - - data = asn_parse_header(data, &length, &msg_type); - if (data == NULL) - return -1; - pdu->command = msg_type; - - if( session->authenticator ) { - ret = session->authenticator( origdata, origlength, save_data - community_length, - community_length, session, pdu ); - if( ret < 0 ) return ret; - } - - if (pdu->command != TRP_REQ_MSG){ - data = asn_parse_int(data, &length, &type, (long *)&pdu->reqid, sizeof(pdu->reqid)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->errstat, sizeof(pdu->errstat)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->errindex, sizeof(pdu->errindex)); - if (data == NULL) - return -1; - } else { - pdu->enterprise_length = MAX_NAME_LEN; - data = asn_parse_objid(data, &length, &type, objid, &pdu->enterprise_length); - if (data == NULL) - return -1; - pdu->enterprise = (oid *)calloc(1, pdu->enterprise_length * sizeof(oid)); - bcopy((char *)objid, (char *)pdu->enterprise, pdu->enterprise_length * sizeof(oid)); - - four = 4; - data = asn_parse_string(data, &length, &type, (u_char *)&pdu->agent_addr.sin_addr.s_addr, &four); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->trap_type, sizeof(pdu->trap_type)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->specific_type, sizeof(pdu->specific_type)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->time, sizeof(pdu->time)); - if (data == NULL) - return -1; - } - data = asn_parse_header(data, &length, &type); - if (data == NULL) - return -1; - if (type != (u_char)(ASN_SEQUENCE | ASN_CONSTRUCTOR)) - return -1; - while((int)length > 0){ - if (pdu->variables == NULL){ - pdu->variables = vp = (struct variable_list *)calloc(1, sizeof(struct variable_list)); - } else { - vp->next_variable = (struct variable_list *)calloc(1, sizeof(struct variable_list)); - vp = vp->next_variable; - } - vp->next_variable = NULL; - vp->val.string = NULL; - vp->name = NULL; - vp->name_length = MAX_NAME_LEN; - data = snmp_parse_var_op(data, objid, &vp->name_length, &vp->type, &vp->val_len, &var_val, (int *)&length); - if (data == NULL) - return -1; - op = (oid *)calloc(1, (unsigned)vp->name_length * sizeof(oid)); - bcopy((char *)objid, (char *)op, vp->name_length * sizeof(oid)); - vp->name = op; - - len = PACKET_LENGTH; - switch((short)vp->type){ - case ASN_INTEGER: - vp->val.integer = (long *)calloc(1, sizeof(long)); - vp->val_len = sizeof(long); - asn_parse_int(var_val, &len, &vp->type, (long *)vp->val.integer, sizeof(vp->val.integer)); - break; - case COUNTER: - case GAUGE: - case TIMETICKS: - case UINTEGER: - vp->val.integer = (long *)calloc(1, sizeof(unsigned long)); - vp->val_len = sizeof(unsigned long); - asn_parse_unsigned_int(var_val, &len, &vp->type, (unsigned long *)vp->val.integer, sizeof(vp->val.integer)); - break; - case COUNTER64: - vp->val.counter64 = (struct counter64 *)calloc(1, sizeof(struct counter64) ); - vp->val_len = sizeof(struct counter64); - asn_parse_unsigned_int64(var_val, &len, &vp->type, - (struct counter64 *)vp->val.counter64, - sizeof(*vp->val.counter64)); - break; - case ASN_OCTET_STR: - case IPADDRESS: - case OPAQUE: - case NSAP: - vp->val.string = (u_char *)calloc(1, (unsigned)vp->val_len); - asn_parse_string(var_val, &len, &vp->type, vp->val.string, &vp->val_len); - break; - case ASN_OBJECT_ID: - vp->val_len = MAX_NAME_LEN; - asn_parse_objid(var_val, &len, &vp->type, objid, &vp->val_len); - vp->val_len *= sizeof(oid); - vp->val.objid = (oid *)calloc(1, (unsigned)vp->val_len); - bcopy((char *)objid, (char *)vp->val.objid, vp->val_len); - break; - case SNMP_NOSUCHOBJECT: - case SNMP_NOSUCHINSTANCE: - case SNMP_ENDOFMIBVIEW: - case ASN_NULL: - break; - default: - fprintf(stderr, "bad type returned (%x)\n", vp->type); - break; - } - } - return ret; -} - -/* - * Sends the input pdu on the session after calling snmp_build to create - * a serialized packet. If necessary, set some of the pdu data from the - * session defaults. Add a request corresponding to this pdu to the list - * of outstanding requests on this session, then send the pdu. - * Returns the request id of the generated packet if applicable, otherwise 1. - * On any error, 0 is returned. - * The pdu is freed by snmp_send() unless a failure occured. - */ -int -snmp_send(session, pdu) - struct snmp_session *session; - struct snmp_pdu *pdu; -{ - struct session_list *slp; - struct snmp_internal_session *isp = NULL; - u_char packet[PACKET_LENGTH]; - int length = PACKET_LENGTH; - struct request_list *rp; - struct timeval tv; - - for(slp = Sessions; slp; slp = slp->next){ - if (slp->session == session){ - isp = slp->internal; - break; - } - } - - if (! pdu) { - snmp_errno = SNMPERR_GENERR; - return 0; - } - - if (isp == NULL){ - snmp_errno = SNMPERR_BAD_SESSION; - return 0; - } - if (pdu->command == GET_REQ_MSG || pdu->command == GETNEXT_REQ_MSG - || pdu->command == GET_RSP_MSG || pdu->command == SET_REQ_MSG - || pdu->command == GETBULK_REQ_MSG ){ - if (pdu->reqid == SNMP_DEFAULT_REQID) - pdu->reqid = ++Reqid; - if (pdu->errstat == SNMP_DEFAULT_ERRSTAT) - pdu->errstat = 0; - if (pdu->errindex == SNMP_DEFAULT_ERRINDEX) - pdu->errindex = 0; - } else { - /* fill in trap defaults */ - pdu->reqid = 1; /* give a bogus non-error reqid for traps */ - if (pdu->enterprise_length == SNMP_DEFAULT_ENTERPRISE_LENGTH){ - pdu->enterprise = (oid *)calloc(1, sizeof(DEFAULT_ENTERPRISE)); - bcopy((char *)DEFAULT_ENTERPRISE, (char *)pdu->enterprise, sizeof(DEFAULT_ENTERPRISE)); - pdu->enterprise_length = sizeof(DEFAULT_ENTERPRISE)/sizeof(oid); - } - if (pdu->time == SNMP_DEFAULT_TIME) - BÐ+= m -È /* */ B>XNMPTÔè */cfor testing purposes */e key! replace... - */ - * ÿ¯ùsnmplib/snmp_api.cc.hÿ°…<Ðlib/snmp_api.c~~ñÿ±<ðÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±«=ÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²=0ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²Š=Pÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ³ -=pÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³‚ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×Áÿ³ùÿ´=ø%D(ÿ´_=à\BØÿ´©=˜4BØÿ´ø=ÈHBØÿµB>ÿµ]ÿµmÿµzÿµ >(ÿµ·ÿµÉÿµÖÿµï>@ÿ¶ÿ¶ ÿ¶4ÿ¶Pÿ¶rÿ¶~ÿ¶ˆ0ÿ¶Ÿ4¨ÿ¶·ÿ¶Ù‰èÿ·ÿ·#ÿ·/ÿ·>>Xÿ·V3/usr/people/wessels/.indent.proÿ¯èÿ¯ùÿ° ÿ°ÿ°.ÿ°?ÿ°Mÿ°[ÿ°pÿ°…ÿ°•ÿ°£ÿ°²ÿ°Åÿ°Ûÿ°ñÿ± -ÿ±ÿ±2ÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±™ÿ±«ÿ±ºÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²ÿ²ÿ²2ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²ÿ²Šÿ²™ÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ²öÿ³ -ÿ³ ÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³sÿ³‚ÿ³‘ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×ÿ³çÿ³ùÿ´ÿ´ÿ´ÿ´)ÿ´3ÿ´Cÿ´Oÿ´_ÿ´kÿ´tÿ´ÿ´ÿ´Ÿÿ´©ÿ´·ÿ´Åÿ´Òÿ´Ýÿ´íÿ´øÿµÿµÿµÿµ)ÿµ7ÿµBÿµMÿµ]ÿµmÿµzÿµ‰ÿµ ÿµ«ÿµ·ÿµÉÿµÖÿµâÿµïÿ¶ÿ¶ÿ¶ ÿ¶4ÿ¶?ÿ¶Pÿ¶bÿ¶rÿ¶~ÿ¶ˆÿ¶”ÿ¶Ÿÿ¶«ÿ¶·ÿ¶Éÿ¶Ùÿ¶íÿ·ÿ·ÿ·#ÿ·/ÿ·>ÿ·Lÿ·Vÿ·fÿ·q°>X 4¨ $  @,2ˆ…>X‚àC Ž0   ¸ude/snmp_groupvars.h~ àude/snmp_groupvars.h ŽX Ž€ Ž¨ ŽÐ „©/*********************************************************** - Copyright 1989 by Carnegie Mellon University - - All Rights Reserved - -Permission to use, copy, modify, and distribute this software and its -documentation for any purpose and without fee is hereby granted, -provided that the above copyright notice appear in all copies and that -both that copyright notice and this permission notice appear in -supporting documentation, and that the name of CMU not be -used in advertising or publicity pertaining to distribution of the -software without specific, written prior permission. - -CMU DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING -ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL -CMU BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR -ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, -WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, -ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS -SOFTWARE. -******************************************************************/ -/* - * snmp_api.c - API for access to snmp. - */ -#define DEBUG_SNMPTRACE 0 /* set to 1 to print all SNMP actions */ -#define DEBUG_SNMPFULLDUMP 0 /* set to 1 to dump all SNMP packets */ - -#include -#include -#include -#include -#include -#include -#include -#ifdef linux -#include -#include -#include -#include -#endif - - -#include "asn1.h" -#include "snmp.h" -#include "snmp_impl.h" -#include "snmp_api.h" -#include "snmp_client.h" - -#define PACKET_LENGTH 4500 - -#ifndef BSD4_3 -#define BSD4_2 -#endif - -#if !defined(BSD4_3) && !defined(linux) && !defined(sun) - -typedef long fd_mask; -#define NFDBITS (sizeof(fd_mask) * NBBY) /* bits per mask */ - -#define FD_SET(n, p) ((p)->fds_bits[(n)/NFDBITS] |= (1 << ((n) % NFDBITS))) -#define FD_CLR(n, p) ((p)->fds_bits[(n)/NFDBITS] &= ~(1 << ((n) % NFDBITS))) -#define FD_ISSET(n, p) ((p)->fds_bits[(n)/NFDBITS] & (1 << ((n) % NFDBITS))) -#define FD_ZERO(p) bzero((char *)(p), sizeof(*(p))) -#endif - -oid default_enterprise[] = {1, 3, 6, 1, 4, 1, 3, 1, 1}; /* enterprises.cmu.systems.cmuSNMP */ - -#define DEFAULT_COMMUNITY "public" -#define DEFAULT_REMPORT SNMP_PORT -#define DEFAULT_ENTERPRISE default_enterprise -#define DEFAULT_TIME 0 -#define DEFAULT_MMS 1389 /* large, randomly picked for testing purposes */ - -/* - * Internal information about the state of the snmp session. - */ -struct snmp_internal_session { - int sd; /* socket descriptor for this connection */ - ipaddr addr; /* address of connected peer */ - struct request_list *requests;/* Info about outstanding requests */ -}; - -/* - * A list of all the outstanding requests for a particular session. - */ -struct request_list { - struct request_list *next_request; - u_long request_id; /* request id */ - int retries; /* Number of retries */ - u_long timeout; /* length to wait for timeout */ - struct timeval time; /* Time this request was made */ - struct timeval expire; /* time this request is due to expire */ - struct snmp_pdu *pdu; /* The pdu for this request (saved so it can be retransmitted */ -}; - -/* - * The list of active/open sessions. - */ -struct session_list { - struct session_list *next; - struct snmp_session *session; - struct snmp_internal_session *internal; -}; - -struct session_list *Sessions = NULL; - -u_long Reqid = 0; -int snmp_errno = 0; - -char *api_errors[4] = { - "Unknown session", - "Unknown host", - "Invalid local port", - "Unknown Error" -}; - - -void sync_with_agent(); -int parse_app_community_string(); -void snmp_synch_setup(); -int snmp_synch_response(); -void md5Digest(); - - -static char * -api_errstring(snmp_errnumber) - int snmp_errnumber; -{ - if (snmp_errnumber <= SNMPERR_BAD_SESSION && snmp_errnumber >= SNMPERR_GENERR){ - return api_errors[snmp_errnumber + 4]; - } else { - return "Unknown Error"; - } -} - -#if 0 -/* - * Gets initial request ID for all transactions. - */ -static void -init_snmp(){ - struct timeval tv; - - gettimeofday(&tv, (struct timezone *)0); - srandom(tv.tv_sec ^ tv.tv_usec); - Reqid = random(); -} -#endif - - -/* - * Dump snmp packet to stdout: - */ -static void -snmp_print_packet(packet, length, addr, code) - char *packet; - int length; - ipaddr addr; - int code; -{ - if(length < 0) { - return; - } - if (code <= 0) { /* received */ - printf("\nReceived %4d bytes from ", length); - } - else { /* sending */ - printf("\nSending %4d bytes to ", length); - } - printf("%s:", inet_ntoa(addr.sin_addr)); -#if DEBUG_SNMPFULLDUMP - for (count = 0; count < length; count++) { - if ((count & 15) == 0) { - printf("\n "); - } - printf("%02X ", (int)(packet[count]&255)); - } -#endif - fflush(stdout); -} - -#if DEBUG_SNMPTRACE -/* - * Print request - */ -#define TRACE_SEND (0) -#define TRACE_RECV (1) -#define TRACE_TIMEOUT (2) -static void -snmp_print_trace(slp, rp, code) - struct session_list *slp; - struct request_list *rp; - int code; -{ - int reqid=0, retries=1; - if( rp ){ - reqid = rp->request_id; - retries = rp->retries; - } - printf("\n Session %2d ReqId %4d ", slp->internal->sd, reqid); - switch(code) - { - case TRACE_SEND: printf("send pdu (%d)", retries);break; - case TRACE_RECV: printf("recv pdu");break; - case TRACE_TIMEOUT: printf("time out");break; - } - fflush(stdout); -} -#endif /* DEBUG_SNMPTRACE */ - - - - -/* - * Sets up the session with the snmp_session information provided - * by the user. Then opens and binds the necessary UDP port. - * A handle to the created session is returned (this is different than - * the pointer passed to snmp_open()). On any error, NULL is returned - * and snmp_errno is set to the appropriate error code. - */ -struct snmp_session * -snmp_open(session) - struct snmp_session *session; -{ - struct session_list *slp; - struct snmp_internal_session *isp; - u_char *cp; - int sd; - u_long addr; - struct sockaddr_in me; - struct hostent *hp; - struct servent *servp; - extern int check_received_pkt(); - - /* Copy session structure and link into list */ - slp = (struct session_list *)calloc(1, sizeof(struct session_list)); - slp->internal = isp = (struct snmp_internal_session *)calloc(1, sizeof(struct snmp_internal_session)); - bzero((char *)isp, sizeof(struct snmp_internal_session)); - slp->internal->sd = -1; /* mark it not set */ - slp->session = (struct snmp_session *)calloc(1, sizeof(struct snmp_session)); - bcopy((char *)session, (char *)slp->session, sizeof(struct snmp_session)); - session = slp->session; - /* now link it in. */ - slp->next = Sessions; - Sessions = slp; - - /* - * session now points to the new structure that still contains pointers to - * data allocated elsewhere. Some of this data is copied to space malloc'd - * here, and the pointer replaced with the new one. - */ - - if (session->peername != NULL){ - cp = (u_char *)calloc(1, (unsigned)strlen(session->peername) + 1); - strcpy((char *)cp, session->peername); - session->peername = (char *)cp; - } - - if (session->retries == SNMP_DEFAULT_RETRIES) - session->retries = SNMP_API_DEFAULT_RETRIES; - if (session->timeout == SNMP_DEFAULT_TIMEOUT) - session->timeout = SNMP_API_DEFAULT_TIMEOUT; - if (session->MMS == 0 ) - session->MMS = DEFAULT_MMS; - isp->requests = NULL; - - - /* Fill in defaults if necessary */ - if (session->community_len != SNMP_DEFAULT_COMMUNITY_LEN){ - if( *session->community == '+' ) { - session->community_len--; - cp = (u_char *) calloc(1, (unsigned) session->community_len); - bcopy((char *) session->community+1, (char *)cp, - session->community_len); - session->version = SNMP_VERSION_2C; - } else { - cp = (u_char *) calloc(1, (unsigned) session->community_len); - bcopy((char *) session->community, (char *) cp, - session->community_len); - } - - } else { - session->community_len = strlen(DEFAULT_COMMUNITY); - cp = (u_char *)calloc(1, (unsigned)session->community_len); - bcopy((char *)DEFAULT_COMMUNITY, (char *)cp, session->community_len); - } - - /* Set up connections */ - sd = socket(AF_INET, SOCK_DGRAM, 0); - if (sd < 0){ - perror("socket"); - snmp_errno = SNMPERR_GENERR; - if (!snmp_close(session)){ - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", api_errstring(snmp_errno)); - exit(1); - } - return 0; - } - isp->sd = sd; - - if (session->peername != SNMP_DEFAULT_PEERNAME){ - if ((addr = inet_addr(session->peername)) != -1){ - bcopy((char *)&addr, (char *)&isp->addr.sin_addr, sizeof(isp->addr.sin_addr)); - } else { - hp = gethostbyname(session->peername); - if (hp == NULL){ - fprintf(stderr, "unknown host: %s\n", session->peername); - snmp_errno = SNMPERR_BAD_ADDRESS; - if (!snmp_close(session)){ - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", api_errstring(snmp_errno)); - exit(2); - } - return 0; - } else { - bcopy((char *)hp->h_addr, (char *)&isp->addr.sin_addr, hp->h_length); - } - } - isp->addr.sin_family = AF_INET; - if (session->remote_port == SNMP_DEFAULT_REMPORT){ - /*servp = getservbyname("snmp", "udp");*/ - servp=NULL; - if (servp != NULL){ - isp->addr.sin_port = servp->s_port; - } else { - isp->addr.sin_port = htons(SNMP_PORT); - } - } else { - isp->addr.sin_port = htons(session->remote_port); - } - } else { - isp->addr.sin_addr.s_addr = SNMP_DEFAULT_ADDRESS; - } - - me.sin_family = AF_INET; - me.sin_addr.s_addr = INADDR_ANY; - me.sin_port = htons(session->local_port); - if (bind(sd, (struct sockaddr *)&me, sizeof(me)) != 0){ - perror("bind"); - snmp_errno = SNMPERR_BAD_LOCPORT; - if (! snmp_close(session)){ - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", - api_errstring(snmp_errno)); - exit(3); - } - return 0; - } - - if( *cp == '/' ) { - session->authenticator = check_received_pkt; - sync_with_agent(session); - parse_app_community_string( session ); - session->qoS |= USEC_QOS_GENREPORT; - } - - /* replace comm pointer with pointer to new data: */ - session->community = cp; - - return session; -} - -void -sync_with_agent( session ) -struct snmp_session *session; -{ - struct snmp_pdu *pdu, *response = 0; - int status; - - session->qoS = USEC_QOS_GENREPORT; - session->userLen = 6; - session->version = SNMP_VERSION_2; - strcpy( session->userName, "public" ); - - snmp_synch_setup(session); - pdu = snmp_pdu_create(GET_REQ_MSG); - status = snmp_synch_response(session, pdu, &response); - - if (status == STAT_SUCCESS){ - memcpy( session->agentID, response->params.agentID, 12 ); - - /* save the clocks -- even though they are not authentic */ - session->agentBoots = response->params.agentBoots; - session->agentTime = response->params.agentTime; - session->agentClock = response->params.agentTime - time(NULL); - - } else { - if (status == STAT_TIMEOUT){ - printf("No Response from %s\n", session->peername); - } else { /* status == STAT_ERROR */ - printf("An error occurred, Quitting\n"); - } - exit( -1 ); - } - - /** freed to early: - snmp_free_pdu(pdu); - if (response) snmp_free_pdu(response); - **/ -} -#if 1 /***/ -/* - * Unlink one element from input request list, - * then free it and it's pdu. - */ -static void -free_one_request(isp, orp) - struct snmp_internal_session *isp; - struct request_list *orp; -{ - struct request_list *rp; - if(! orp) return; - if(isp->requests == orp){ - isp->requests = orp->next_request; /* unlink head */ - } - else{ - for(rp = isp->requests; rp; rp = rp->next_request){ - if(rp->next_request == orp){ - rp->next_request = orp->next_request; /* unlink element */ - break; - } - } - } - if (orp->pdu != NULL){ - snmp_free_pdu(orp->pdu); - } - free((char *)orp); -} -#endif /***/ -/* - * Free each element in the input request list. - */ -static void -free_request_list(rp) - struct request_list *rp; -{ - struct request_list *orp; - - while(rp){ - orp = rp; - rp = rp->next_request; - if (orp->pdu != NULL) - snmp_free_pdu(orp->pdu); - free((char *)orp); - } -} - -/* - * Close the input session. Frees all data allocated for the session, - * dequeues any pending requests, and closes any sockets allocated for - * the session. Returns 0 on error, 1 otherwise. - */ -int -snmp_close(session) - struct snmp_session *session; -{ - struct session_list *slp = NULL, *oslp = NULL; - - if (Sessions->session == session){ /* If first entry */ - slp = Sessions; - Sessions = slp->next; - } else { - for(slp = Sessions; slp; slp = slp->next){ - if (slp->session == session){ - if (oslp) /* if we found entry that points here */ - oslp->next = slp->next; /* link around this entry */ - break; - } - oslp = slp; - } - } - /* If we found the session, free all data associated with it */ - if (slp){ - if (slp->session->community != NULL) - free((char *)slp->session->community); - if(slp->session->peername != NULL) - free((char *)slp->session->peername); - free((char *)slp->session); - if (slp->internal->sd != -1) - close(slp->internal->sd); - free_request_list(slp->internal->requests); - free((char *)slp->internal); - free((char *)slp); - } else { - snmp_errno = SNMPERR_BAD_SESSION; - return 0; - } - return 1; -} - -/* - * Takes a session and a pdu and serializes the ASN PDU into the area - * pointed to by packet. out_length is the size of the data area available. - * Returns the length of the completed packet in out_length. If any errors - * occur, -1 is returned. If all goes well, 0 is returned. - */ -int -snmp_build(session, pdu, packet, out_length, is_agent) - struct snmp_session *session; - struct snmp_pdu *pdu; - u_char *packet; - int *out_length; - int is_agent; -{ - u_char buf[PACKET_LENGTH]; - u_char *cp; - struct variable_list *vp; - int length; - int totallength; - - length = *out_length; - cp = packet; - for(vp = pdu->variables; vp; vp = vp->next_variable){ - cp = snmp_build_var_op(cp, vp->name, &vp->name_length, vp->type, vp->val_len, (u_char *)vp->val.string, &length); - if (cp == NULL) - return -1; - } - totallength = cp - packet; - - length = PACKET_LENGTH; - cp = asn_build_header(buf, &length, (u_char)(ASN_SEQUENCE | ASN_CONSTRUCTOR), totallength); - if (cp == NULL) - return -1; - bcopy((char *)packet, (char *)cp, totallength); - totallength += cp - buf; - - length = *out_length; - if (pdu->command != TRP_REQ_MSG){ - /* request id */ - cp = asn_build_int(packet, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->reqid, sizeof(pdu->reqid)); - if (cp == NULL) - return -1; - /* error status */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->errstat, sizeof(pdu->errstat)); - if (cp == NULL) - return -1; - /* error index */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->errindex, sizeof(pdu->errindex)); - if (cp == NULL) - return -1; - } else { /* this is a trap message */ - /* enterprise */ - cp = asn_build_objid(packet, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_OBJECT_ID), - (oid *)pdu->enterprise, pdu->enterprise_length); - if (cp == NULL) - return -1; - /* agent-addr */ - cp = asn_build_string(cp, &length, (u_char)IPADDRESS, - (u_char *)&pdu->agent_addr.sin_addr.s_addr, sizeof(pdu->agent_addr.sin_addr.s_addr)); - if (cp == NULL) - return -1; - /* generic trap */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->trap_type, sizeof(pdu->trap_type)); - if (cp == NULL) - return -1; - /* specific trap */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->specific_type, sizeof(pdu->specific_type)); - if (cp == NULL) - return -1; - /* timestamp */ - cp = asn_build_int(cp, &length, (u_char)TIMETICKS, - (long *)&pdu->time, sizeof(pdu->time)); - if (cp == NULL) - return -1; - } - if (length < totallength) - return -1; - bcopy((char *)buf, (char *)cp, totallength); - totallength += cp - packet; - - length = PACKET_LENGTH; - cp = asn_build_header(buf, &length, (u_char)pdu->command, totallength); - if (cp == NULL) - return -1; - if (length < totallength) - return -1; - bcopy((char *)packet, (char *)cp, totallength); - totallength += cp - buf; - - length = *out_length; - - cp = snmp_auth_build( packet, &length, session, is_agent, totallength ); - if (cp == NULL) - return -1; - if ((*out_length - (cp - packet)) < totallength) - return -1; - bcopy((char *)buf, (char *)cp, totallength); - totallength += cp - packet; - *out_length = totallength; - - if( session->qoS & USEC_QOS_AUTH ) - md5Digest( packet, totallength, cp - (session->contextLen + 16), - cp - (session->contextLen + 16) ); - - return 0; -} - -/* - * Parses the packet received on the input session, and places the data into - * the input pdu. length is the length of the input packet. If any errors - * are encountered, -1 is returned. Otherwise, a 0 is returned. - */ -static int -snmp_parse(session, pdu, data, length) - struct snmp_session *session; - struct snmp_pdu *pdu; - u_char *data; - int length; -{ - u_char msg_type; - u_char type; - u_char *var_val; - long version; - int len, four; - u_char community[256]; - int community_length = 256; - struct variable_list *vp = 0; - oid objid[MAX_NAME_LEN], *op; - u_char *origdata = data; - int origlength = length; - int ret = 0; - u_char *save_data; - - /* authenticates message and returns length if valid */ - data = snmp_auth_parse(data, &length, community, &community_length, &version); - if (data == NULL) - return -1; - - if( version != SNMP_VERSION_1 && version != SNMP_VERSION_2C && version != SNMP_VERSION_2 ) { - fprintf(stderr, "Wrong version: %ld\n", version); - return -1; - } - - save_data = data; - - data = asn_parse_header(data, &length, &msg_type); - if (data == NULL) - return -1; - pdu->command = msg_type; - - if( session->authenticator ) { - ret = session->authenticator( origdata, origlength, save_data - community_length, - community_length, session, pdu ); - if( ret < 0 ) return ret; - } - - if (pdu->command != TRP_REQ_MSG){ - data = asn_parse_int(data, &length, &type, (long *)&pdu->reqid, sizeof(pdu->reqid)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->errstat, sizeof(pdu->errstat)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->errindex, sizeof(pdu->errindex)); - if (data == NULL) - return -1; - } else { - pdu->enterprise_length = MAX_NAME_LEN; - data = asn_parse_objid(data, &length, &type, objid, &pdu->enterprise_length); - if (data == NULL) - return -1; - pdu->enterprise = (oid *)calloc(1, pdu->enterprise_length * sizeof(oid)); - bcopy((char *)objid, (char *)pdu->enterprise, pdu->enterprise_length * sizeof(oid)); - - four = 4; - data = asn_parse_string(data, &length, &type, (u_char *)&pdu->agent_addr.sin_addr.s_addr, &four); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->trap_type, sizeof(pdu->trap_type)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->specific_type, sizeof(pdu->specific_type)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->time, sizeof(pdu->time)); - if (data == NULL) - return -1; - } - data = asn_parse_header(data, &length, &type); - if (data == NULL) - return -1; - if (type != (u_char)(ASN_SEQUENCE | ASN_CONSTRUCTOR)) - return -1; - while((int)length > 0){ - if (pdu->variables == NULL){ - pdu->variables = vp = (struct variable_list *)calloc(1, sizeof(struct variable_list)); - } else { - vp->next_variable = (struct variable_list *)calloc(1, sizeof(struct variable_list)); - vp = vp->next_variable; - } - vp->next_variable = NULL; - vp->val.string = NULL; - vp->name = NULL; - vp->name_length = MAX_NAME_LEN; - data = snmp_parse_var_op(data, objid, &vp->name_length, &vp->type, &vp->val_len, &var_val, (int *)&length); - if (data == NULL) - return -1; - op = (oid *)calloc(1, (unsigned)vp->name_length * sizeof(oid)); - bcopy((char *)objid, (char *)op, vp->name_length * sizeof(oid)); - vp->name = op; - - len = PACKET_LENGTH; - switch((short)vp->type){ - case ASN_INTEGER: - vp->val.integer = (long *)calloc(1, sizeof(long)); - vp->val_len = sizeof(long); - asn_parse_int(var_val, &len, &vp->type, (long *)vp->val.integer, sizeof(vp->val.integer)); - break; - case COUNTER: - case GAUGE: - case TIMETICKS: - case UINTEGER: - vp->val.integer = (long *)calloc(1, sizeof(unsigned long)); - vp->val_len = sizeof(unsigned long); - asn_parse_unsigned_int(var_val, &len, &vp->type, (unsigned long *)vp->val.integer, sizeof(vp->val.integer)); - break; - case COUNTER64: - vp->val.counter64 = (struct counter64 *)calloc(1, sizeof(struct counter64) ); - vp->val_len = sizeof(struct counter64); - asn_parse_unsigned_int64(var_val, &len, &vp->type, - (struct counter64 *)vp->val.counter64, - sizeof(*vp->val.counter64)); - break; - case ASN_OCTET_STR: - case IPADDRESS: - case OPAQUE: - case NSAP: - vp->val.string = (u_char *)calloc(1, (unsigned)vp->val_len); - asn_parse_string(var_val, &len, &vp->type, vp->val.string, &vp->val_len); - break; - case ASN_OBJECT_ID: - vp->val_len = MAX_NAME_LEN; - asn_parse_objid(var_val, &len, &vp->type, objid, &vp->val_len); - vp->val_len *= sizeof(oid); - vp->val.objid = (oid *)calloc(1, (unsigned)vp->val_len); - bcopy((char *)objid, (char *)vp->val.objid, vp->val_len); - break; - case SNMP_NOSUCHOBJECT: - case SNMP_NOSUCHINSTANCE: - case SNMP_ENDOFMIBVIEW: - case ASN_NULL: - break; - default: - fprintf(stderr, "bad type returned (%x)\n", vp->type); - break; - } - } - return ret; -} - -/* - * Sends the input pdu on the session after calling snmp_build to create - * a serialized packet. If necessary, set some of the pdu data from the - * session defaults. Add a request corresponding to this pdu to the list - * of outstanding requests on this session, then send the pdu. - * Returns the request id of the generated packet if applicable, otherwise 1. - * On any error, 0 is returned. - * The pdu is freed by snmp_send() unless a failure occured. - */ -int -snmp_send(session, pdu) - struct snmp_session *session; - struct snmp_pdu *pdu; -{ - struct session_list *slp; - struct snmp_internal_session *isp = NULL; - u_char packet[PACKET_LENGTH]; - int length = PACKET_LENGTH; - struct request_list *rp; - struct timeval tv; - - for(slp = Sessions; slp; slp = slp->next){ - if (slp->session == session){ - isp = slp->internal; - break; - } - } - - if (! pdu) { - snmp_errno = SNMPERR_GENERR; - return 0; - } - - if (isp == NULL){ - snmp_errno = SNMPERR_BAD_SESSION; - return 0; - } - if (pdu->command == GET_REQ_MSG || pdu->command == GETNEXT_REQ_MSG - || pdu->command == GET_RSP_MSG || pdu->command == SET_REQ_MSG - || pdu->command == GETBULK_REQ_MSG ){ - if (pdu->reqid == SNMP_DEFAULT_REQID) - pdu->reqid = ++Reqid; - if (pdu->errstat == SNMP_DEFAULT_ERRSTAT) - pdu->errstat = 0; - if (pdu->errindex == SNMP_DEFAULT_ERRINDEX) - pdu->errindex = 0; - } else { - /* fill in trap defaults */ - pdu->reqid = 1; /* give a bogus non-error reqid for traps */ - if (pdu->enterprise_length == SNMP_DEFAULT_ENTERPRISE_LENGTH){ - pdu->enterprise = (oid *)calloc(1, sizeof(DEFAULT_ENTERPRISE)); - bcopy((char *)DEFAULT_ENTERPRISE, (char *)pdu->enterprise, sizeof(DEFAULT_ENTERPRISE)); - pdu->enterprise_length = sizeof(DEFAULT_ENTERPRISE)/sizeof(oid); - } - if (pdu->time == SNMP_DEFAULT_TIME) - pdu->time = DEFAULT_TIME; - } - if (pdu->address.sin_addr.s_addr == SNMP_DEFAULT_ADDRESS){ - if (isp->addr.sin_addr.s_addr != SNMP_DEFAULT_ADDRESS){ - bcopy((char *)&isp->addr, (char *)&pdu->address, sizeof(pdu->address)); - } else { - fprintf(stderr, "No remote IP address specified\n"); - snmp_errno = SNMPERR_BAD_ADDRESS; - return 0; - } - } - - - if (snmp_build(session, pdu, packet, &length, 0) < 0){ - fprintf(stderr, "Error building packet\n"); - snmp_errno = SNMPERR_GENERR; - return 0; - } -#if 1 /***/ - if (snmp_dump_packet){ - snmp_print_packet(packet, length, pdu->address, 1); - } -#endif /***/ - - gettimeofday(&tv, (struct timezone *)0); - if (sendto(isp->sd, (char *)packet, length, 0, (struct sockaddr *)&pdu->address, sizeof(pdu->address)) < 0){ - perror("sendto"); - snmp_errno = SNMPERR_GENERR; - return 0; - } - if (pdu->command == GET_REQ_MSG || pdu->command == GETNEXT_REQ_MSG - || pdu->command == SET_REQ_MSG || pdu->command == GETBULK_REQ_MSG ){ - /* set up to expect a response */ - rp = (struct request_list *)calloc(1, sizeof(struct request_list)); -#if 1 /***/ - if(! rp){ - fprintf(stderr, "Out of memory!\n"); - snmp_errno = SNMPERR_GENERR; - return 0; - } -#endif /***/ - rp->next_request = isp->requests; - isp->requests = rp; - rp->pdu = pdu; - rp->request_id = pdu->reqid; - - rp->retries = 1; - rp->timeout = session->timeout; - rp->time = tv; - tv.tv_usec += rp->timeout; - tv.tv_sec += tv.tv_usec / 1000000L; - tv.tv_usec %= 1000000L; - rp->expire = tv; -#if DEBUG_SNMPTRACE - snmp_print_trace(slp, rp, TRACE_SEND); -#endif - } - return pdu->reqid; -} - -/* - * Frees the pdu and any malloc'd data associated with it. - */ -void -snmp_free_pdu(struct snmp_pdu * pdu) -{ - struct variable_list *vp, *ovp; - - if (! pdu) - return; - - vp = pdu->variables; - while(vp){ - if (vp->name) { - free((char *)vp->name); - } - if (vp->val.string) { - free((char *)vp->val.string); - } - ovp = vp; - vp = vp->next_variable; - free((char *)ovp); - } - if (pdu->enterprise) { - free((char *)pdu->enterprise); - } - free((char *)pdu); -} - - -/* - * Checks to see if any of the fd's set in the fdset belong to - * snmp. Each socket with it's fd set has a packet read from it - * and snmp_parse is called on the packet received. The resulting pdu - * is passed to the callback routine for that session. If the callback - * routine returns successfully, the pdu and it's request are deleted. - */ -void -snmp_read(fdset) - fd_set *fdset; -{ - struct session_list *slp; - struct snmp_session *sp; - struct snmp_internal_session *isp; - u_char packet[PACKET_LENGTH]; - struct sockaddr_in from; - ssize_t length, fromlength; - struct snmp_pdu *pdu; - struct request_list *rp /**, *orp **/ ; - - for(slp = Sessions; slp; slp = slp->next){ - if (FD_ISSET(slp->internal->sd, fdset)){ - sp = slp->session; - isp = slp->internal; - fromlength = sizeof(from); - length = recvfrom(isp->sd, (char *)packet, PACKET_LENGTH, 0, (struct sockaddr *)&from, &fromlength); - if (length == -1) { - perror("recvfrom"); - return; - } -#if 1 /***/ - if (snmp_dump_packet){ - snmp_print_packet(packet, length, from, 0); - } - pdu = (struct snmp_pdu *)calloc(1, sizeof(struct snmp_pdu)); - - if(! pdu){ - fprintf(stderr, "Out of memory!\n"); - snmp_errno = SNMPERR_GENERR; - return; - } -#endif /***/ - - pdu->address = from; - pdu->reqid = 0; - pdu->variables = NULL; - pdu->enterprise = NULL; - pdu->enterprise_length = 0; - if (snmp_parse(sp, pdu, packet, length) < 0) { - fprintf(stderr, "Mangled packet\n"); - snmp_free_pdu(pdu); - return; - } - if (pdu->command == GET_RSP_MSG || pdu->command == REPORT_MSG) { -#if 1 /***/ /* bug fix: illegal re-use of rp killed some requests */ - struct request_list *rp_next = 0; - for (rp = isp->requests; rp; rp = rp_next) { - rp_next = rp->next_request; - if (rp->request_id == pdu->reqid) { -#if DEBUG_SNMPTRACE - snmp_print_trace(slp, rp, TRACE_RECV); -#endif - if (sp->callback(RECEIVED_MESSAGE, sp, pdu->reqid, pdu, sp->callback_magic) == 1) { - /* successful, so delete request */ - free_one_request(isp, rp); - break; /* no more request with the same reqid */ - } - } - } -#endif/***/ g fix: illegal re-use of rp killed some requests */ replace... - */ - * ÿ¯ùsnmplib/snmp_api.cc.hÿ°…<Ðlib/snmp_api.c~~ñÿ±<ðÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±«=ÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²=0ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²Š=Pÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ³ -=pÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³‚ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×Áÿ³ùÿ´=ø%D(ÿ´_=à\BØÿ´©=˜4BØÿ´ø=ÈHBØÿµB>ÿµ]ÿµmÿµzÿµ >(ÿµ·ÿµÉÿµÖÿµï>@ÿ¶ÿ¶ ÿ¶4ÿ¶Pÿ¶rÿ¶~ÿ¶ˆ0ÿ¶Ÿÿ¶·ÿ¶Ù‚àÿ·ÿ·#ÿ·/ÿ·>>Xÿ·V3/usr/people/wessels/.indent.proÿ¯èÿ¯ùÿ° ÿ°ÿ°.ÿ°?ÿ°Mÿ°[ÿ°pÿ°…ÿ°•ÿ°£ÿ°²ÿ°Åÿ°Ûÿ°ñÿ± -ÿ±ÿ±2ÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±™ÿ±«ÿ±ºÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²ÿ²ÿ²2ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²ÿ²Šÿ²™ÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ²öÿ³ -ÿ³ ÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³sÿ³‚ÿ³‘ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×ÿ³çÿ³ùÿ´ÿ´ÿ´ÿ´)ÿ´3ÿ´Cÿ´Oÿ´_ÿ´kÿ´tÿ´ÿ´ÿ´Ÿÿ´©ÿ´·ÿ´Åÿ´Òÿ´Ýÿ´íÿ´øÿµÿµÿµÿµ)ÿµ7ÿµBÿµMÿµ]ÿµmÿµzÿµ‰ÿµ ÿµ«ÿµ·ÿµÉÿµÖÿµâÿµïÿ¶ÿ¶ÿ¶ ÿ¶4ÿ¶?ÿ¶Pÿ¶bÿ¶rÿ¶~ÿ¶ˆÿ¶”ÿ¶Ÿÿ¶«ÿ¶·ÿ¶Éÿ¶Ùÿ¶íÿ·ÿ·ÿ·#ÿ·/ÿ·>ÿ·Lÿ·Vÿ·fÿ·q@ calloc(1, sizeof(DEFAULT_ENTERPRISE)); - bcopy((char *)DEFAULT_ENTERPRISE, (char *)pdu->enterprise, sizeof(DEFAULT_ENTERPRISE)); - pdu->enterprise_length = sizeof(DEFAULT_ENTERPRISE)/sizeof(oid); - } - if (pdu->time == SNMP_DEFAULT_TIME) - pdu->time = DEFAULT_TIME; - } - if (pdu->address.sin_addr.s_addr == SNMP_DEFAULT_ADDRESS){ - if (isp->addr.sin_addr.s_addr != SNMP_DEFAULT_ADDRESS){ - bcopy((char *)&isp->addr, (char *)&pdu->address, sizeof(pdu->address)); - } else { - fprintf(stderr, "No remote IP address specified\n"); - snmp_errno = SNMPERR_BAD_ADDRESS; - return 0; - } - } - - - if (snmp_build(session, pdu, packet, &length, 0) < 0){ - fprintf(stderr, "Error building packet\n"); - snmp_errno = SNMPERR_GENERR; - return 0; - } -#if 1 /***/ - if (snmp_dump_packet){ - snmp_print_packet(packet, length, pdu->address, 1); - } -#endif /***/ - - gettimeofday(&tv, (struct timezone *)0); - if (sendto(isp->sd, (char *)packet, length, 0, (struct sockaddr *)&pdu->address, sizeof(pdu->address)) < 0){ - perror("sendto"); - snmp_errno = SNMPERR_GENERR; - return 0; - } - if (pdu->command == GET_REQ_MSG || pdu->command == GETNEXT_REQ_MSG - || pdu->command == SET_REQ_MSG || pdu->command == GETBULK_REQ_MSG ){ - /* set up to expect a response */ - rp = (struct request_list *)calloc(1, sizeof(struct request_list)); -#if 1 /***/ - if(! rp){ - fprintf(stderr, "Out of memory!\n"); - snmp_errno = SNMPERR_GENERR; - return 0; - } -#endif /***/ - rp->next_request = isp->requests; - isp->requests = rp; - rp->pdu = pdu; - rp->request_id = pdu->reqid; - - rp->retries = 1; - rp->timeout = session->timeout; - rp->time = tv; - tv.tv_usec += rp->timeout; - tv.tv_sec += tv.tv_usec / 1000000L; - tv.tv_usec %= 1000000L; - rp->expire = tv; -#if DEBUG_SNMPTRACE - snmp_print_trace(slp, rp, TRACE_SEND); -#endif - } - return pdu->reqid; -} - -/* - * Frees the pdu and any malloc'd data associated with it. - */ -void -snmp_free_pdu(struct snmp_pdu * pdu) -{ - struct variable_list *vp, *ovp; - - if (! pdu) - return; - - vp = pdu->variables; - while(vp){ - if (vp->name) { - free((char *)vp->name); - } - if (vp->val.string) { - free((char *)vp->val.string); - } - ovp = vp; - vp = vp->next_variable; - free((char *)ovp); - } - if (pdu->enterprise) { - free((char *)pdu->enterprise); - } - free((char *)pdu); -} - - -/* - * Checks to see if any of the fd's set in the fdset belong to - * snmp. Each socket with it's fd set has a packet read from it - * and snmp_parse is called on the packet received. The resulting pdu - * is passed to the callback routine for that session. If the callback - * routine returns successfully, the pdu and it's request are deleted. - */ -void -snmp_read(fdset) - fd_set *fdset; -{ - struct session_list *slp; - struct snmp_session *sp; - struct snmp_internal_session *isp; - u_char packet[PACKET_LENGTH]; - struct sockaddr_in from; - ssize_t length, fromlength; - struct snmp_pdu *pdu; - struct request_list *rp /**, *orp **/ ; - - for(slp = Sessions; slp; slp = slp->next){ - if (FD_ISSET(slp->internal->sd, fdset)){ - sp = slp->session; - isp = slp->internal; - fromlength = sizeof(from); - length = recvfrom(isp->sd, (char *)packet, PACKET_LENGTH, 0, (struct sockaddr *)&from, &fromlength); - if (length == -1) { - perror("recvfrom"); - return; - } -#if 1 /***/ - if (snmp_dump_packet){ - snmp_print_packet(packet, length, from, 0); - } - pdu = (struct snmp_pdu *)calloc(1, sizeof(struct snmp_pdu)); - - if(! pdu){ - fprintf(stderr, "Out of memory!\n"); - snmp_errno = SNMPERR_GENERR; - return; - } -#endif /***/ - - pdu->address = from; - pdu->reqid = 0; - pdu->variables = NULL; - pdu->enterprise = NULL; - pdu->enterprise_length = 0; - if (snmp_parse(sp, pdu, packet, length) < 0) { - fprintf(stderr, "Mangled packet\n"); - snmp_free_pdu(pdu); - return; - } - if (pdu->command == GET_RSP_MSG || pdu->command == REPORT_MSG) { -#if 1 /***/ /* bug fix: illegal re-use of rp killed some requests */ - struct request_list *rp_next = 0; - for (rp = isp->requests; rp; rp = rp_next) { - rp_next = rp->next_request; - if (rp->request_id == pdu->reqid) { -#if DEBUG_SNMPTRACE - snmp_print_trace(slp, rp, TRACE_RECV); -#endif - if (sp->callback(RECEIVED_MESSAGE, sp, pdu->reqid, pdu, sp->callback_magic) == 1) { - /* successful, so delete request */ - free_one_request(isp, rp); - break; /* no more request with the same reqid */ - } - } - } ->pdu); - } - free((char *)orp); -} -#endif /***/ -/* - * Free each element in the input request list. - */ -static void -free_request_list(rp) - struct request_list *rp; -{ - struct request_list *orp; - - while(rp){ - orp = rp; - rp = rp->next_request; - if (orp->pdu != NULL) - snmp_free_pdu(orp->pdu); - free((char *)orp); - } -} - -/* - * Close the input session. Frees all data allocated for the session, - * dequeues any pending requests, and closes any sockets allocated for - * the session. Returns 0 on error, 1 otherwise. - */ -int -snmp_close(session) - struct snmp_session *session; -{ - struct session_list *slp = NULL, *oslp = NULL; - - if (Sessions->session == session){ /* If first entry */ - slp = Sessions; - Sessions = slp->next; - } else { - for(slp = Sessions; slp; slp = slp->next){ - if (slp->session == session){ - if (oslp) /* if we found entry that points here */ - oslp->next = slp->next; /* link around this entry */ - break; - } - oslp = slp; - } - } - /* If we found the session, free all data associated with it */ - if (slp){ - if (slp->session->community != NULL) - free((char *)slp->session->community); - if(slp->session->peername != NULL) - free((char *)slp->session->peername); - free((char *)slp->session); - if (slp->internal->sd != -1) - close(slp->internal->sd); - free_request_list(slp->internal->requests); - free((char *)slp->internal); - free((char *)slp); - } else { - snmp_errno = SNMPERR_BAD_SESSION; - return 0; - } - return 1; -} - -/* - * Takes a session and a pdu and serializes the ASN PDU into the area - * pointed to by packet. out_length is the size of the data area available. - * Returns the length of the completed packet in out_length. If any errors - * occur, -1 is returned. If all goes well, 0 is returned. - */ -int -snmp_build(session, pdu, packet, out_length, is_agent) - struct snmp_session *session; - struct snmp_pdu *pdu; - u_char *packet; - int *out_length; - int is_agent; -{ - u_char buf[PACKET_LENGTH]; - u_char *cp; - struct variable_list *vp; - int length; - int totallength; - - length = *out_length; - cp = packet; - for(vp = pdu->variables; vp; vp = vp->next_variable){ - cp = snmp_build_var_op(cp, vp->name, &vp->name_length, vp->type, vp->val_len, (u_char *)vp->val.string, &length); - if (cp == NULL) - return -1; - } - totallength = cp - packet; - - length = PACKET_LENGTH; - cp = asn_build_header(buf, &length, (u_char)(ASN_SEQUENCE | ASN_CONSTRUCTOR), totallength); - if (cp == NULL) - return -1; - bcopy((char *)packet, (char *)cp, totallength); - totallength += cp - buf; - - length = *out_length; - if (pdu->command != TRP_REQ_MSG){ - /* request id */ - cp = asn_build_int(packet, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->reqid, sizeof(pdu->reqid)); - if (cp == NULL) - return -1; - /* error status */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->errstat, sizeof(pdu->errstat)); - if (cp == NULL) - return -1; - /* error index */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->errindex, sizeof(pdu->errindex)); - if (cp == NULL) - return -1; - } else { /* this is a trap message */ - /* enterprise */ - cp = asn_build_objid(packet, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_OBJECT_ID), - (oid *)pdu->enterprise, pdu->enterprise_length); - if (cp == NULL) - return -1; - /* agent-addr */ - cp = asn_build_string(cp, &length, (u_char)IPADDRESS, - (u_char *)&pdu->agent_addr.sin_addr.s_addr, sizeof(pdu->agent_addr.sin_addr.s_addr)); - if (cp == NULL) - return -1; - /* generic trap */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->trap_type, sizeof(pdu->trap_type)); - if (cp == NULL) - return -1; - /* specific trap */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->specific_type, sizeof(pdu->specific_type)); - if (cp == NULL) - return -1; - /* timestamp */ - cp = asn_build_int(cp, &length, (u_char)TIMETICKS, - (long *)&pdu->time, sizeof(pdu->time)); - if (cp == NULL) - return -1; - } - if (length < totallength) - return -1; - bcopy((char *)buf, (char *)cp, totallength); - totallength += cp - packet; - - length = PACKET_LENGTH; - cp = asn_build_header(buf, &length, (u_char)pdu->command, totallength); - if (cp == NULL) - return -1; - if (length < totallength) - return -1; - bcopy((char *)packet, (char *)cp, totallength); - totallength += cp - buf; - - length = *out_length; - - cp = snmp_auth_build( packet, &length, session, is_agent, totallength ); - if (cp == NULL) - return -1; - if ((*out_length - (cp - packet)) < totallength) - return -1; - bcopy((char *)buf, (char *)cp, totallength); - totallength += cp - packet; - *out_length = totallength; - - if( session->qoS & USEC_QOS_AUTH ) - md5Digest( packet, totallength, cp - (session->contextLen + 16), - cp - (session->contextLen + 16) ); - - return 0; -} - -/* - * Parses the packet received on the input session, and places the data into - * the input pdu. length is the length of the input packet. If any errors - * are encountered, -1 is returned. Otherwise, a 0 is returned. - */ -static int -snmp_parse(session, pdu, data, length) - struct snmp_session *session; - struct snmp_pdu *pdu; - u_char *data; - int length; -{ - u_char msg_type; - u_char type; - u_char *var_val; - long version; - int len, four; - u_char community[256]; - int community_length = 256; - struct variable_list *vp = 0; - oid objid[MAX_NAME_LEN], *op; - u_char *origdata = data; - int origlength = length; - int ret = 0; - u_char *save_data; - - /* authenticates message and returns length if valid */ - data = snmp_auth_parse(data, &length, community, &community_length, &version); - if (data == NULL) - return -1; - - if( version != SNMP_VERSION_1 && version != SNMP_VERSION_2C && version != SNMP_VERSION_2 ) { - fprintf(stderr, "Wrong version: %ld\n", version); - return -1; - } - - save_data = data; - - data = asn_parse_header(data, &length, &msg_type); - if (data == NULL) - return -1; - pdu->command = msg_type; - - if( session->authenticator ) { - ret = session->authenticator( origdata, origlength, save_data - community_length, - community_length, session, pdu ); - if( ret < 0 ) return ret; - } - - if (pdu->command != TRP_REQ_MSG){ - data = asn_parse_int(data, &length, &type, (long *)&pdu->reqid, sizeof(pdu->reqid)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->errstat, sizeof(pdu->errstat)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->errindex, sizeof(pdu->errindex)); - if (data == NULL) - return -1; - } else { - pdu->enterprise_length = MAX_NAME_LEN; - data = asn_parse_objid(data, &length, &type, objid, &pdu->enterprise_length); - if (data == NULL) - return -1; - pdu->enterprise = (oid *)calloc(1, pdu->enterprise_length * sizeof(oid)); - bcopy((char *)objid, (char *)pdu->enterprise, pdu->enterprise_length * sizeof(oid)); - - four = 4; - data = asn_parse_string(data, &length, &type, (u_char *)&pdu->agent_addr.sin_addr.s_addr, &four); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->trap_type, sizeof(pdu->trap_type)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->specific_type, sizeof(pdu->specific_type)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->time, sizeof(pdu->time)); - if (data == NULL) - return -1; - } - data = asn_parse_header(data, &length, &type); - if (data == NULL) - return -1; - if (type != (u_char)(ASN_SEQUENCE | ASN_CONSTRUCTOR)) - return -1; - while((int)length > 0){ - if (pdu->variables == NULL){ - pdu->variables = vp = (struct variable_list *)calloc(1, sizeof(struct variable_list)); - } else { - vp->next_variable = (struct variable_list *)calloc(1, sizeof(struct variable_list)); - vp = vp->next_variable; - } - vp->next_variable = NULL; - vp->val.string = NULL; - vp->name = NULL; - vp->name_length = MAX_NAME_LEN; - data = snmp_parse_var_op(data, objid, &vp->name_length, &vp->type, &vp->val_len, &var_val, (int *)&length); - if (data == NULL) - return -1; - op = (oid *)calloc(1, (unsigned)vp->name_length * sizeof(oid)); - bcopy((char *)objid, (char *)op, vp->name_length * sizeof(oid)); - vp->name = op; - - len = PACKET_LENGTH; - switch((short)vp->type){ - case ASN_INTEGER: - vp->val.integer = (long *)calloc(1, sizeof(long)); - vp->val_len = sizeof(long); - asn_parse_int(var_val, &len, &vp->type, (long *)vp->val.integer, sizeof(vp->val.integer)); - break; - case COUNTER: - case GAUGE: - case TIMETICKS: - case UINTEGER: - vp->val.integer = (long *)calloc(1, sizeof(unsigned long)); - vp->val_len = sizeof(unsigned long); - asn_parse_unsigned_int(var_val, &len, &vp->type, (unsigned long *)vp->val.integer, sizeof(vp->val.integer)); - break; - case COUNTER64: - vp->val.counter64 = (struct counter64 *)calloc(1, sizeof(struct counter64) ); - vp->val_len = sizeof(struct counter64); - asn_parse_unsigned_int64(var_val, &len, &vp->type, - (struct counter64 *)vp->val.counter64, - sizeof(*vp->val.counter64)); - break; - case ASN_OCTET_STR: - case IPADDRESS: - case OPAQUE: - case NSAP: - vp->val.string = (u_char *)calloc(1, (unsigned)vp->val_len); - asn_parse_string(var_val, &len, &vp->type, vp->val.string, &vp->val_len); - break; - case ASN_OBJECT_ID: - vp->val_len = MAX_NAME_LEN; - asn_parse_objid(var_val, &len, &vp->type, objid, &vp->val_len); - vp->val_len *= sizeof(oid); - vp->val.objid = (oid *)calloc(1, (unsigned)vp->val_len); - bcopy((char *)objid, (char *)vp->val.objid, vp->val_len); - break; - case SNMP_NOSUCHOBJECT: - case SNMP_NOSUCHINSTANCE: - case SNMP_ENDOFMIBVIEW: - case ASN_NULL: - break; - default: - fprintf(stderr, "bad type returned (%x)\n", vp->type); - break; - } - } - return ret; -} - -/* - * Sends the input pdu on the session after calling snmp_build to create - * a serialized packet. If necessary, set some of the pdu data from the - * session defaults. Add a request corresponding to this pdu to the list - * of outstanding requests on this session, then send the pdu. - * Returns the request id of the generated packet if applicable, otherwise 1. - * On any error, 0 is returned. - * The pdu is freed by snmp_send() unless a failure occured. - */ -int -snmp_send(session, pdu) - struct snmp_session *session; - struct snmp_pdu *pdu; -{ - struct session_list *slp; - struct snmp_internal_session *isp = NULL; - u_char packet[PACKET_LENGTH]; - int length = PACKET_LENGTH; - struct request_list *rp; - struct timeval tv; - - for(slp = Sessions; slp; slp = slp->next){ - if (slp->session == session){ - isp = slp->internal; - break; - } - } - - if (! pdu) { - snmp_errno = SNMPERR_GENERR; - return 0; - } - - if (isp == NULL){ - snmp_errno = SNMPERR_BAD_SESSION; - return 0; - } - if (pdu->command == GET_REQ_MSG || pdu->command == GETNEXT_REQ_MSG - || pdu->command == GET_RSP_MSG || pdu->command == SET_REQ_MSG - || pdu->command == GETBULK_REQ_MSG ){ - if (pdu->reqid == SNMP_DEFAULT_REQID) - pdu->reqid = ++Reqid; - if (pdu->errstat == SNMP_DEFAULT_ERRSTAT) - pdu->errstat = 0; - if (pdu->errindex == SNMP_DEFAULT_ERRINDEX) - pdu->errindex = 0; - } else { - /* fill in trap defaults */ - pdu->reqid = 1; /* give a bogus non-error reqid for traps */ - if (pdu->enterprise_length == SNMP_DEFAULT_ENTERPRISE_LENGTH){ - pdu->enterprise = (oid *)BÐ+= m -È /* >X*/ B7NMPTÔè */cfor testing purposes */e key! replace... - */ - * ÿ¯ùsnmplib/snmp_api.cc.hÿ°…<Ðlib/snmp_api.c~~ñÿ±<ðÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±«=ÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²=0ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²Š=Pÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ³ -=pÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³‚ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×Áÿ³ùÿ´=ø%D(ÿ´_=à\BØÿ´©=˜4BØÿ´ø=ÈHBØÿµB>ÿµ]ÿµmÿµzÿµ >(ÿµ·ÿµÉÿµÖÿµï>@ÿ¶ÿ¶ ÿ¶4ÿ¶Pÿ¶rÿ¶~ÿ¶ˆ0ÿ¶Ÿ4¨ÿ¶·ÿ¶Ù‰èÿ·ÿ·#ÿ·/ÿ·>>Xÿ·V3/usr/people/wessels/.indent.proÿ¯èÿ¯ùÿ° ÿ°ÿ°.ÿ°?ÿ°Mÿ°[ÿ°pÿ°…ÿ°•ÿ°£ÿ°²ÿ°Åÿ°Ûÿ°ñÿ± -ÿ±ÿ±2ÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±™ÿ±«ÿ±ºÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²ÿ²ÿ²2ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²ÿ²Šÿ²™ÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ²öÿ³ -ÿ³ ÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³sÿ³‚ÿ³‘ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×ÿ³çÿ³ùÿ´ÿ´ÿ´ÿ´)ÿ´3ÿ´Cÿ´Oÿ´_ÿ´kÿ´tÿ´ÿ´ÿ´Ÿÿ´©ÿ´·ÿ´Åÿ´Òÿ´Ýÿ´íÿ´øÿµÿµÿµÿµ)ÿµ7ÿµBÿµMÿµ]ÿµmÿµzÿµ‰ÿµ ÿµ«ÿµ·ÿµÉÿµÖÿµâÿµïÿ¶ÿ¶ÿ¶ ÿ¶4ÿ¶?ÿ¶Pÿ¶bÿ¶rÿ¶~ÿ¶ˆÿ¶”ÿ¶Ÿÿ¶«ÿ¶·ÿ¶Éÿ¶Ùÿ¶íÿ·ÿ·ÿ·#ÿ·/ÿ·>ÿ·Lÿ·Vÿ·fÿ·q°>X 4¨ $  @,2ˆ…>X‚àC Ž0   ¸ude/snmp_groupvars.h~ àude/snmp_groupvars.h ŽX Ž€ Ž¨ ŽÐ „©/*********************************************************** - Copyright 1989 by Carnegie Mellon University - - All Rights Reserved - -Permission to use, copy, modify, and distribute this software and its -documentation for any purpose and without fee is hereby granted, -provided that the above copyright notice appear in all copies and that -both that copyright notice and this permission notice appear in -supporting documentation, and that the name of CMU not be -used in advertising or publicity pertaining to distribution of the -software without specific, written prior permission. - -CMU DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING -ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL -CMU BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR -ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, -WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, -ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS -SOFTWARE. -******************************************************************/ -/* - * snmp_api.c - API for access to snmp. - */ -#define DEBUG_SNMPTRACE 0 /* set to 1 to print all SNMP actions */ -#define DEBUG_SNMPFULLDUMP 0 /* set to 1 to dump all SNMP packets */ - -#include -#include -#include -#include -#include -#include -#include -#ifdef linux -#include -#include -#include -#include -#endif - - -#include "asn1.h" -#include "snmp.h" -#include "snmp_impl.h" -#include "snmp_api.h" -#include "snmp_client.h" - -#define PACKET_LENGTH 4500 - -#ifndef BSD4_3 -#define BSD4_2 -#endif - -#if !defined(BSD4_3) && !defined(linux) && !defined(sun) - -typedef long fd_mask; -#define NFDBITS (sizeof(fd_mask) * NBBY) /* bits per mask */ - -#define FD_SET(n, p) ((p)->fds_bits[(n)/NFDBITS] |= (1 << ((n) % NFDBITS))) -#define FD_CLR(n, p) ((p)->fds_bits[(n)/NFDBITS] &= ~(1 << ((n) % NFDBITS))) -#define FD_ISSET(n, p) ((p)->fds_bits[(n)/NFDBITS] & (1 << ((n) % NFDBITS))) -#define FD_ZERO(p) bzero((char *)(p), sizeof(*(p))) -#endif - -oid default_enterprise[] = {1, 3, 6, 1, 4, 1, 3, 1, 1}; /* enterprises.cmu.systems.cmuSNMP */ - -#define DEFAULT_COMMUNITY "public" -#define DEFAULT_REMPORT SNMP_PORT -#define DEFAULT_ENTERPRISE default_enterprise -#define DEFAULT_TIME 0 -#define DEFAULT_MMS 1389 /* large, randomly picked for testing purposes */ - -/* - * Internal information about the state of the snmp session. - */ -struct snmp_internal_session { - int sd; /* socket descriptor for this connection */ - ipaddr addr; /* address of connected peer */ - struct request_list *requests;/* Info about outstanding requests */ -}; - -/* - * A list of all the outstanding requests for a particular session. - */ -struct request_list { - struct request_list *next_request; - u_long request_id; /* request id */ - int retries; /* Number of retries */ - u_long timeout; /* length to wait for timeout */ - struct timeval time; /* Time this request was made */ - struct timeval expire; /* time this request is due to expire */ - struct snmp_pdu *pdu; /* The pdu for this request (saved so it can be retransmitted */ -}; - -/* - * The list of active/open sessions. - */ -struct session_list { - struct session_list *next; - struct snmp_session *session; - struct snmp_internal_session *internal; -}; - -struct session_list *Sessions = NULL; - -u_long Reqid = 0; -int snmp_errno = 0; - -char *api_errors[4] = { - "Unknown session", - "Unknown host", - "Invalid local port", - "Unknown Error" -}; - - -void sync_with_agent(); -int parse_app_community_string(); -void snmp_synch_setup(); -int snmp_synch_response(); -void md5Digest(); - - -static char * -api_errstring(snmp_errnumber) - int snmp_errnumber; -{ - if (snmp_errnumber <= SNMPERR_BAD_SESSION && snmp_errnumber >= SNMPERR_GENERR){ - return api_errors[snmp_errnumber + 4]; - } else { - return "Unknown Error"; - } -} - -#if 0 -/* - * Gets initial request ID for all transactions. - */ -static void -init_snmp(){ - struct timeval tv; - - gettimeofday(&tv, (struct timezone *)0); - srandom(tv.tv_sec ^ tv.tv_usec); - Reqid = random(); -} -#endif - - -/* - * Dump snmp packet to stdout: - */ -static void -snmp_print_packet(packet, length, addr, code) - char *packet; - int length; - ipaddr addr; - int code; -{ - if(length < 0) { - return; - } - if (code <= 0) { /* received */ - printf("\nReceived %4d bytes from ", length); - } - else { /* sending */ - printf("\nSending %4d bytes to ", length); - } - printf("%s:", inet_ntoa(addr.sin_addr)); -#if DEBUG_SNMPFULLDUMP - for (count = 0; count < length; count++) { - if ((count & 15) == 0) { - printf("\n "); - } - printf("%02X ", (int)(packet[count]&255)); - } -#endif - fflush(stdout); -} - -#if DEBUG_SNMPTRACE -/* - * Print request - */ -#define TRACE_SEND (0) -#define TRACE_RECV (1) -#define TRACE_TIMEOUT (2) -static void -snmp_print_trace(slp, rp, code) - struct session_list *slp; - struct request_list *rp; - int code; -{ - int reqid=0, retries=1; - if( rp ){ - reqid = rp->request_id; - retries = rp->retries; - } - printf("\n Session %2d ReqId %4d ", slp->internal->sd, reqid); - switch(code) - { - case TRACE_SEND: printf("send pdu (%d)", retries);break; - case TRACE_RECV: printf("recv pdu");break; - case TRACE_TIMEOUT: printf("time out");break; - } - fflush(stdout); -} -#endif /* DEBUG_SNMPTRACE */ - - - - -/* - * Sets up the session with the snmp_session information provided - * by the user. Then opens and binds the necessary UDP port. - * A handle to the created session is returned (this is different than - * the pointer passed to snmp_open()). On any error, NULL is returned - * and snmp_errno is set to the appropriate error code. - */ -struct snmp_session * -snmp_open(session) - struct snmp_session *session; -{ - struct session_list *slp; - struct snmp_internal_session *isp; - u_char *cp; - int sd; - u_long addr; - struct sockaddr_in me; - struct hostent *hp; - struct servent *servp; - extern int check_received_pkt(); - - /* Copy session structure and link into list */ - slp = (struct session_list *)calloc(1, sizeof(struct session_list)); - slp->internal = isp = (struct snmp_internal_session *)calloc(1, sizeof(struct snmp_internal_session)); - bzero((char *)isp, sizeof(struct snmp_internal_session)); - slp->internal->sd = -1; /* mark it not set */ - slp->session = (struct snmp_session *)calloc(1, sizeof(struct snmp_session)); - bcopy((char *)session, (char *)slp->session, sizeof(struct snmp_session)); - session = slp->session; - /* now link it in. */ - slp->next = Sessions; - Sessions = slp; - - /* - * session now points to the new structure that still contains pointers to - * data allocated elsewhere. Some of this data is copied to space malloc'd - * here, and the pointer replaced with the new one. - */ - - if (session->peername != NULL){ - cp = (u_char *)calloc(1, (unsigned)strlen(session->peername) + 1); - strcpy((char *)cp, session->peername); - session->peername = (char *)cp; - } - - if (session->retries == SNMP_DEFAULT_RETRIES) - session->retries = SNMP_API_DEFAULT_RETRIES; - if (session->timeout == SNMP_DEFAULT_TIMEOUT) - session->timeout = SNMP_API_DEFAULT_TIMEOUT; - if (session->MMS == 0 ) - session->MMS = DEFAULT_MMS; - isp->requests = NULL; - - - /* Fill in defaults if necessary */ - if (session->community_len != SNMP_DEFAULT_COMMUNITY_LEN){ - if( *session->community == '+' ) { - session->community_len--; - cp = (u_char *) calloc(1, (unsigned) session->community_len); - bcopy((char *) session->community+1, (char *)cp, - session->community_len); - session->version = SNMP_VERSION_2C; - } else { - cp = (u_char *) calloc(1, (unsigned) session->community_len); - bcopy((char *) session->community, (char *) cp, - session->community_len); - } - - } else { - session->community_len = strlen(DEFAULT_COMMUNITY); - cp = (u_char *)calloc(1, (unsigned)session->community_len); - bcopy((char *)DEFAULT_COMMUNITY, (char *)cp, session->community_len); - } - - /* Set up connections */ - sd = socket(AF_INET, SOCK_DGRAM, 0); - if (sd < 0){ - perror("socket"); - snmp_errno = SNMPERR_GENERR; - if (!snmp_close(session)){ - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", api_errstring(snmp_errno)); - exit(1); - } - return 0; - } - isp->sd = sd; - - if (session->peername != SNMP_DEFAULT_PEERNAME){ - if ((addr = inet_addr(session->peername)) != -1){ - bcopy((char *)&addr, (char *)&isp->addr.sin_addr, sizeof(isp->addr.sin_addr)); - } else { - hp = gethostbyname(session->peername); - if (hp == NULL){ - fprintf(stderr, "unknown host: %s\n", session->peername); - snmp_errno = SNMPERR_BAD_ADDRESS; - if (!snmp_close(session)){ - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", api_errstring(snmp_errno)); - exit(2); - } - return 0; - } else { - bcopy((char *)hp->h_addr, (char *)&isp->addr.sin_addr, hp->h_length); - } - } - isp->addr.sin_family = AF_INET; - if (session->remote_port == SNMP_DEFAULT_REMPORT){ - /*servp = getservbyname("snmp", "udp");*/ - servp=NULL; - if (servp != NULL){ - isp->addr.sin_port = servp->s_port; - } else { - isp->addr.sin_port = htons(SNMP_PORT); - } - } else { - isp->addr.sin_port = htons(session->remote_port); - } - } else { - isp->addr.sin_addr.s_addr = SNMP_DEFAULT_ADDRESS; - } - - me.sin_family = AF_INET; - me.sin_addr.s_addr = INADDR_ANY; - me.sin_port = htons(session->local_port); - if (bind(sd, (struct sockaddr *)&me, sizeof(me)) != 0){ - perror("bind"); - snmp_errno = SNMPERR_BAD_LOCPORT; - if (! snmp_close(session)){ - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", - api_errstring(snmp_errno)); - exit(3); - } - return 0; - } - - if( *cp == '/' ) { - session->authenticator = check_received_pkt; - sync_with_agent(session); - parse_app_community_string( session ); - session->qoS |= USEC_QOS_GENREPORT; - } - - /* replace comm pointer with pointer to new data: */ - session->community = cp; - - return session; -} - -void -sync_with_agent( session ) -struct snmp_session *session; -{ - struct snmp_pdu *pdu, *response = 0; - int status; - - session->qoS = USEC_QOS_GENREPORT; - session->userLen = 6; - session->version = SNMP_VERSION_2; - strcpy( session->userName, "public" ); - - snmp_synch_setup(session); - pdu = snmp_pdu_create(GET_REQ_MSG); - status = snmp_synch_response(session, pdu, &response); - - if (status == STAT_SUCCESS){ - memcpy( session->agentID, response->params.agentID, 12 ); - - /* save the clocks -- even though they are not authentic */ - session->agentBoots = response->params.agentBoots; - session->agentTime = response->params.agentTime; - session->agentClock = response->params.agentTime - time(NULL); - - } else { - if (status == STAT_TIMEOUT){ - printf("No Response from %s\n", session->peername); - } else { /* status == STAT_ERROR */ - printf("An error occurred, Quitting\n"); - } - exit( -1 ); - } - - /** freed to early: - snmp_free_pdu(pdu); - if (response) snmp_free_pdu(response); - **/ -} -#if 1 /***/ -/* - * Unlink one element from input request list, - * then free it and it's pdu. - */ -static void -free_one_request(isp, orp) - struct snmp_internal_session *isp; - struct request_list *orp; -{ - struct request_list *rp; - if(! orp) return; - if(isp->requests == orp){ - isp->requests = orp->next_request; /* unlink head */ - } - else{ - for(rp = isp->requests; rp; rp = rp->next_request){ - if(rp->next_request == orp){ - rp->next_request = orp->next_request; /* unlink element */ - break; - } - } - } - if (orp->pdu != NULL){ - snmp_free_pdu(orp->pdu); - } - free((char *)orp); -} -#endif /***/ -/* - * Free each element in the input request list. - */ -static void -free_request_list(rp) - struct request_list *rp; -{ - struct request_list *orp; - - while(rp){ - orp = rp; - rp = rp->next_request; - if (orp->pdu != NULL) - snmp_free_pdu(orp->pdu); - free((char *)orp); - } -} - -/* - * Close the input session. Frees all data allocated for the session, - * dequeues any pending requests, and closes any sockets allocated for - * the session. Returns 0 on error, 1 otherwise. - */ -int -snmp_close(session) - struct snmp_session *session; -{ - struct session_list *slp = NULL, *oslp = NULL; - - if (Sessions->session == session){ /* If first entry */ - slp = Sessions; - Sessions = slp->next; - } else { - for(slp = Sessions; slp; slp = slp->next){ - if (slp->session == session){ - if (oslp) /* if we found entry that points here */ - oslp->next = slp->next; /* link around this entry */ - break; - } - oslp = slp; - } - } - /* If we found the session, free all data associated with it */ - if (slp){ - if (slp->session->community != NULL) - free((char *)slp->session->community); - if(slp->session->peername != NULL) - free((char *)slp->session->peername); - free((char *)slp->session); - if (slp->internal->sd != -1) - close(slp->internal->sd); - free_request_list(slp->internal->requests); - free((char *)slp->internal); - free((char *)slp); - } else { - snmp_errno = SNMPERR_BAD_SESSION; - return 0; - } - return 1; -} - -/* - * Takes a session and a pdu and serializes the ASN PDU into the area - * pointed to by packet. out_length is the size of the data area available. - * Returns the length of the completed packet in out_length. If any errors - * occur, -1 is returned. If all goes well, 0 is returned. - */ -int -snmp_build(session, pdu, packet, out_length, is_agent) - struct snmp_session *session; - struct snmp_pdu *pdu; - u_char *packet; - int *out_length; - int is_agent; -{ - u_char buf[PACKET_LENGTH]; - u_char *cp; - struct variable_list *vp; - int length; - int totallength; - - length = *out_length; - cp = packet; - for(vp = pdu->variables; vp; vp = vp->next_variable){ - cp = snmp_build_var_op(cp, vp->name, &vp->name_length, vp->type, vp->val_len, (u_char *)vp->val.string, &length); - if (cp == NULL) - return -1; - } - totallength = cp - packet; - - length = PACKET_LENGTH; - cp = asn_build_header(buf, &length, (u_char)(ASN_SEQUENCE | ASN_CONSTRUCTOR), totallength); - if (cp == NULL) - return -1; - bcopy((char *)packet, (char *)cp, totallength); - totallength += cp - buf; - - length = *out_length; - if (pdu->command != TRP_REQ_MSG){ - /* request id */ - cp = asn_build_int(packet, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->reqid, sizeof(pdu->reqid)); - if (cp == NULL) - return -1; - /* error status */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->errstat, sizeof(pdu->errstat)); - if (cp == NULL) - return -1; - /* error index */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->errindex, sizeof(pdu->errindex)); - if (cp == NULL) - return -1; - } else { /* this is a trap message */ - /* enterprise */ - cp = asn_build_objid(packet, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_OBJECT_ID), - (oid *)pdu->enterprise, pdu->enterprise_length); - if (cp == NULL) - return -1; - /* agent-addr */ - cp = asn_build_string(cp, &length, (u_char)IPADDRESS, - (u_char *)&pdu->agent_addr.sin_addr.s_addr, sizeof(pdu->agent_addr.sin_addr.s_addr)); - if (cp == NULL) - return -1; - /* generic trap */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->trap_type, sizeof(pdu->trap_type)); - if (cp == NULL) - return -1; - /* specific trap */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->specific_type, sizeof(pdu->specific_type)); - if (cp == NULL) - return -1; - /* timestamp */ - cp = asn_build_int(cp, &length, (u_char)TIMETICKS, - (long *)&pdu->time, sizeof(pdu->time)); - if (cp == NULL) - return -1; - } - if (length < totallength) - return -1; - bcopy((char *)buf, (char *)cp, totallength); - totallength += cp - packet; - - length = PACKET_LENGTH; - cp = asn_build_header(buf, &length, (u_char)pdu->command, totallength); - if (cp == NULL) - return -1; - if (length < totallength) - return -1; - bcopy((char *)packet, (char *)cp, totallength); - totallength += cp - buf; - - length = *out_length; - - cp = snmp_auth_build( packet, &length, session, is_agent, totallength ); - if (cp == NULL) - return -1; - if ((*out_length - (cp - packet)) < totallength) - return -1; - bcopy((char *)buf, (char *)cp, totallength); - totallength += cp - packet; - *out_length = totallength; - - if( session->qoS & USEC_QOS_AUTH ) - md5Digest( packet, totallength, cp - (session->contextLen + 16), - cp - (session->contextLen + 16) ); - - return 0; -} - -/* - * Parses the packet received on the input session, and places the data into - * the input pdu. length is the length of the input packet. If any errors - * are encountered, -1 is returned. Otherwise, a 0 is returned. - */ -static int -snmp_parse(session, pdu, data, length) - struct snmp_session *session; - struct snmp_pdu *pdu; - u_char *data; - int length; -{ - u_char msg_type; - u_char type; - u_char *var_val; - long version; - int len, four; - u_char community[256]; - int community_length = 256; - struct variable_list *vp = 0; - oid objid[MAX_NAME_LEN], *op; - u_char *origdata = data; - int origlength = length; - int ret = 0; - u_char *save_data; - - /* authenticates message and returns length if valid */ - data = snmp_auth_parse(data, &length, community, &community_length, &version); - if (data == NULL) - return -1; - - if( version != SNMP_VERSION_1 && version != SNMP_VERSION_2C && version != SNMP_VERSION_2 ) { - fprintf(stderr, "Wrong version: %ld\n", version); - return -1; - } - - save_data = data; - - data = asn_parse_header(data, &length, &msg_type); - if (data == NULL) - return -1; - pdu->command = msg_type; - - if( session->authenticator ) { - ret = session->authenticator( origdata, origlength, save_data - community_length, - community_length, session, pdu ); - if( ret < 0 ) return ret; - } - - if (pdu->command != TRP_REQ_MSG){ - data = asn_parse_int(data, &length, &type, (long *)&pdu->reqid, sizeof(pdu->reqid)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->errstat, sizeof(pdu->errstat)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->errindex, sizeof(pdu->errindex)); - if (data == NULL) - return -1; - } else { - pdu->enterprise_length = MAX_NAME_LEN; - data = asn_parse_objid(data, &length, &type, objid, &pdu->enterprise_length); - if (data == NULL) - return -1; - pdu->enterprise = (oid *)calloc(1, pdu->enterprise_length * sizeof(oid)); - bcopy((char *)objid, (char *)pdu->enterprise, pdu->enterprise_length * sizeof(oid)); - - four = 4; - data = asn_parse_string(data, &length, &type, (u_char *)&pdu->agent_addr.sin_addr.s_addr, &four); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->trap_type, sizeof(pdu->trap_type)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->specific_type, sizeof(pdu->specific_type)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->time, sizeof(pdu->time)); - if (data == NULL) - return -1; - } - data = asn_parse_header(data, &length, &type); - if (data == NULL) - return -1; - if (type != (u_char)(ASN_SEQUENCE | ASN_CONSTRUCTOR)) - return -1; - while((int)length > 0){ - if (pdu->variables == NULL){ - pdu->variables = vp = (struct variable_list *)calloc(1, sizeof(struct variable_list)); - } else { - vp->next_variable = (struct variable_list *)calloc(1, sizeof(struct variable_list)); - vp = vp->next_variable; - } - vp->next_variable = NULL; - vp->val.string = NULL; - vp->name = NULL; - vp->name_length = MAX_NAME_LEN; - data = snmp_parse_var_op(data, objid, &vp->name_length, &vp->type, &vp->val_len, &var_val, (int *)&length); - if (data == NULL) - return -1; - op = (oid *)calloc(1, (unsigned)vp->name_length * sizeof(oid)); - bcopy((char *)objid, (char *)op, vp->name_length * sizeof(oid)); - vp->name = op; - - len = PACKET_LENGTH; - switch((short)vp->type){ - case ASN_INTEGER: - vp->val.integer = (long *)calloc(1, sizeof(long)); - vp->val_len = sizeof(long); - asn_parse_int(var_val, &len, &vp->type, (long *)vp->val.integer, sizeof(vp->val.integer)); - break; - case COUNTER: - case GAUGE: - case TIMETICKS: - case UINTEGER: - vp->val.integer = (long *)calloc(1, sizeof(unsigned long)); - vp->val_len = sizeof(unsigned long); - asn_parse_unsigned_int(var_val, &len, &vp->type, (unsigned long *)vp->val.integer, sizeof(vp->val.integer)); - break; - case COUNTER64: - vp->val.counter64 = (struct counter64 *)calloc(1, sizeof(struct counter64) ); - vp->val_len = sizeof(struct counter64); - asn_parse_unsigned_int64(var_val, &len, &vp->type, - (struct counter64 *)vp->val.counter64, - sizeof(*vp->val.counter64)); - break; - case ASN_OCTET_STR: - case IPADDRESS: - case OPAQUE: - case NSAP: - vp->val.string = (u_char *)calloc(1, (unsigned)vp->val_len); - asn_parse_string(var_val, &len, &vp->type, vp->val.string, &vp->val_len); - break; - case ASN_OBJECT_ID: - vp->val_len = MAX_NAME_LEN; - asn_parse_objid(var_val, &len, &vp->type, objid, &vp->val_len); - vp->val_len *= sizeof(oid); - vp->val.objid = (oid *)calloc(1, (unsigned)vp->val_len); - bcopy((char *)objid, (char *)vp->val.objid, vp->val_len); - break; - case SNMP_NOSUCHOBJECT: - case SNMP_NOSUCHINSTANCE: - case SNMP_ENDOFMIBVIEW: - case ASN_NULL: - break; - default: - fprintf(stderr, "bad type returned (%x)\n", vp->type); - break; - } - } - return ret; -} - -/* - * Sends the input pdu on the session after calling snmp_build to create - * a serialized packet. If necessary, set some of the pdu data from the - * session defaults. Add a request corresponding to this pdu to the list - * of outstanding requests on this session, then send the pdu. - * Returns the request id of the generated packet if applicable, otherwise 1. - * On any error, 0 is returned. - * The pdu is freed by snmp_send() unless a failure occured. - */ -int -snmp_send(session, pdu) - struct snmp_session *session; - struct snmp_pdu *pdu; -{ - struct session_list *slp; - struct snmp_internal_session *isp = NULL; - u_char packet[PACKET_LENGTH]; - int length = PACKET_LENGTH; - struct request_list *rp; - struct timeval tv; - - for(slp = Sessions; slp; slp = slp->next){ - if (slp->session == session){ - isp = slp->internal; - break; - } - } - - if (! pdu) { - snmp_errno = SNMPERR_GENERR; - return 0; - } - - if (isp == NULL){ - snmp_errno = SNMPERR_BAD_SESSION; - return 0; - } - if (pdu->command == GET_REQ_MSG || pdu->command == GETNEXT_REQ_MSG - || pdu->command == GET_RSP_MSG || pdu->command == SET_REQ_MSG - || pdu->command == GETBULK_REQ_MSG ){ - if (pdu->reqid == SNMP_DEFAULT_REQID) - pdu->reqid = ++Reqid; - if (pdu->errstat == SNMP_DEFAULT_ERRSTAT) - pdu->errstat = 0; - if (pdu->errindex == SNMP_DEFAULT_ERRINDEX) - pdu->errindex = 0; - } else { - /* fill in trap defaults */ - pdu->reqid = 1; /* give a bogus non-error reqid for traps */ - if (pdu->enterprise_length == SNMP_DEFAULT_ENTERPRISE_LENGTH){ - pdu->enterprise = (oid *)calloc(1, sizeof(DEFAULT_ENTERPRISE)); - bcopy((char *)DEFAULT_ENTERPRISE, (char *)pdu->enterprise, sizeof(DEFAULT_ENTERPRISE)); - pdu->enterprise_length = sizeof(DEFAULT_ENTERPRISE)/sizeof(oid); - } - if (pdu->time == SNMP_DEFAULT_TIME) - pdu->time = DEFAULT_TIME; - } - if (pdu->address.sin_addr.s_addr == SNMP_DEFAULT_ADDRESS){ - if (isp->addr.sin_addr.s_addr != SNMP_DEFAULT_ADDRESS){ - bcopy((char *)&isp->addr, (char *)&pdu->address, sizeof(pdu->address)); - } else { - fprintf(stderr, "No remote IP address specified\n"); - snmp_errno = SNMPERR_BAD_ADDRESS; - return 0; - } - } - - - if (snmp_build(session, pdu, packet, &length, 0) < 0){ - fprintf(stderr, "Error building packet\n"); - snmp_errno = SNMPERR_GENERR; - return 0; - } -#if 1 /***/ - if (snmp_dump_packet){ - snmp_print_packet(packet, length, pdu->address, 1); - } -#endif /***/ - - gettimeofday(&tv, (struct timezone *)0); - if (sendto(isp->sd, (char *)packet, length, 0, (struct sockaddr *)&pdu->address, sizeof(pdu->address)) < 0){ - perror("sendto"); - snmp_errno = SNMPERR_GENERR; - return 0; - } - if (pdu->command == GET_REQ_MSG || pdu->command == GETNEXT_REQ_MSG - || pdu->command == SET_REQ_MSG || pdu->command == GETBULK_REQ_MSG ){ - /* set up to expect a response */ - rp = (struct request_list *)calloc(1, sizeof(struct request_list)); -#if 1 /***/ - if(! rp){ - fprintf(stderr, "Out of memory!\n"); - snmp_errno = SNMPERR_GENERR; - return 0; - } -#endif /***/ - rp->next_request = isp->requests; - isp->requests = rp; - rp->pdu = pdu; - rp->request_id = pdu->reqid; - - rp->retries = 1; - rp->timeout = session->timeout; - rp->time = tv; - tv.tv_usec += rp->timeout; - tv.tv_sec += tv.tv_usec / 1000000L; - tv.tv_usec %= 1000000L; - rp->expire = tv; -#if DEBUG_SNMPTRACE - snmp_print_trace(slp, rp, TRACE_SEND); -#endif - } - return pdu->reqid; -} - -/* - * Frees the pdu and any malloc'd data associated with it. - */ -void -snmp_free_pdu(struct snmp_pdu * pdu) -{ - struct variable_list *vp, *ovp; - - if (! pdu) - return; - - vp = pdu->variables; - while(vp){ - if (vp->name) { - free((char *)vp->name); - } - if (vp->val.string) { - free((char *)vp->val.string); - } - ovp = vp; - vp = vp->next_variable; - free((char *)ovp); - } - if (pdu->enterprise) { - free((char *)pdu->enterprise); - } - free((char *)pdu); -} - - -/* - * Checks to see if any of the fd's set in the fdset belong to - * snmp. Each socket with it's fd set has a packet read from it - * and snmp_parse is called on the packet received. The resulting pdu - * is passed to the callback routine for that session. If the callback - * routine returns successfully, the pdu and it's request are deleted. - */ -void -snmp_read(fdset) - fd_set *fdset; -{ - struct session_list *slp; - struct snmp_session *sp; - struct snmp_internal_session *isp; - u_char packet[PACKET_LENGTH]; - struct sockaddr_in from; - ssize_t length, fromlength; - struct snmp_pdu *pdu; - struct request_list *rp /**, *orp **/ ; - - for(slp = Sessions; slp; slp = slp->next){ - if (FD_ISSET(slp->internal->sd, fdset)){ - sp = slp->session; - isp = slp->internal; - fromlength = sizeof(from); - length = recvfrom(isp->sd, (char *)packet, PACKET_LENGTH, 0, (struct sockaddr *)&from, &fromlength); - if (length == -1) { - perror("recvfrom"); - return; - } -#if 1 /***/ - if (snmp_dump_packet){ - snmp_print_packet(packet, length, from, 0); - } - pdu = (struct snmp_pdu *)calloc(1, sizeof(struct snmp_pdu)); - - if(! pdu){ - fprintf(stderr, "Out of memory!\n"); - snmp_errno = SNMPERR_GENERR; - return; - } -#endif /***/ - - pdu->address = from; - pdu->reqid = 0; - pdu->variables = NULL; - pdu->enterprise = NULL; - pdu->enterprise_length = 0; - if (snmp_parse(sp, pdu, packet, length) < 0){ - fprintf(stderr, "Mangled packet\n"); - snmp_free_pdu(pdu); - return; - } - - if (pdu->command == GET_RSP_MSG || pdu->command == REPORT_MSG){ -#if 1 /***/ /* bug fix: illegal re-use of rp killed some requests */ - struct request_list *rp_next= 0; - for(rp = isp->requests; rp; rp = rp_next){ - rp_next = rp->next_request; - if (rp->request_id == pdu->reqid){ -#if DEBUG_SNMPTRACE - snmp_print_trace(slp, rp, TRACE_RECV); -#endif - if (sp->callback(RECEIVED_MESSAGE, sp, pdu->reqid, pdu, sp->callback_magic) == 1){ - /* successful, so delete request */ - free_one_request(isp, rp); - break; /* no more request with the same reqid */ - } - } - } -#endif /***/ - } else if (pdu->command == GET_REQ_MSG - || pdu->command == GETNEXT_REQ_MSG - || pdu->command == GETBULK_REQ_MSG - || pdu->command == TRP_REQ_MSG || pdu->command == SET_REQ_MSG) { -#if DEBUG_SNMPTRACE - snmp_print_trace(slp, NULL, TRACE_RECV); -#endif - sp->callback(RECEIVED_MESSAGE, sp, pdu->reqid, pdu, sp->callback_magic); - } - snmp_free_pdu(pdu); - } - } -} - -/* - * Returns info about what snmp requires from a select statement. - * numfds is the number of fds in the list that are significant. - * All file descriptors opened for SNMP are OR'd into the fdset. - * If activity occurs on any of these file descriptors, snmp_read - * should be called with that file descriptor set - * - * The timeout is the latest time that SNMP can wait for a timeout. The - * select should be done with the minimum time between timeout and any other - * timeouts necessary. This should be checked upon each invocation of select. - * If a timeout is received, snmp_timeout should be called to check if the - * timeout was for SNMP. (snmp_timeout is idempotent) - * - * Block is 1 if the select is requested to block indefinitely, rather - * than time out. If block is input as 1, the timeout value will be - * treated as undefined, but it must be available for setting in - * snmp_select_info. On return, if block is true, the value of - * timeout will be undefined. - * - * snmp_select_info returns the number of open sockets. (i.e. The - * number of sessions open) - */ -int -snmp_select_info(numfds, fdset, timeout, block) - int *numfds; - fd_set *fdset; - struct timeval *timeout; - int *block; /* should the select block until input arrives (i.e. no input) */ -{ - struct session_list *slp; - struct snmp_internal_session *isp; - struct request_list *rp; - struct timeval now, earliest; - int active = 0, requests = 0; - - timerclear(&earliest); - /* - * For each request outstanding, add it's socket to the fdset, - * and if it is the earliest timeout to expire, mark it as lowest. - */ - for (slp = Sessions; slp; slp = slp->next) { - active++; - isp = slp->internal; - if ((isp->sd + 1) > *numfds) - *numfds = (isp->sd + 1); - FD_SET(isp->sd, fdset); - if (isp->requests) { - /* found another session with outstanding requests */ - requests++; - for (rp = isp->requests; rp; rp = rp->next_request) { - if (!timerisset(&earliest) || timercmp(&rp->expire, &earliest, <)) - earliest = rp->expire; - } - } - } - if (requests == 0) /* if none are active, skip arithmetic */ - return active; - - /* - * Now find out how much time until the earliest timeout. This - * transforms earliest from an absolute time into a delta time, the - * time left until the select should timeout. - */ - gettimeofday(&now, (struct timezone *) 0); - earliest.tv_sec--; /* adjust time to make arithmetic easier */ - earliest.tv_usec += 1000000L; - earliest.tv_sec -= now.tv_sec; - earliest.tv_usec -= now.tv_usec; - while (earliest.tv_usec >= 1000000L) { - earliest.tv_usec -= 1000000L; - earliest.tv_sec += 1; - } - if (earliest.tv_sec < 0) { - earliest.tv_sec = 0; - earliest.tv_usec = 0; - } - /* if it was blocking before or our delta time is less, reset timeout */ - if (*block == 1 || timercmp(&earliest, timeout, <)) { - *timeout = earliest; - *block = 0; - } - return active; -} - -/* - * snmp_timeout should be called whenever the timeout from - * snmp_select_info expires, but it is idempotent, so snmp_timeout can - * be polled (probably a cpu expensive proposition). snmp_timeout - * checks to see if any of the sessions have an outstanding request - * that has timed out. If it finds one (or more), and that pdu has - * more retries available, a new packet is formed from the pdu and is - * resent. If there are no more retries available, the callback for - * the session is used to alert the user of the timeout. - */ -void -snmp_timeout() -{ - struct session_list *slp; - struct snmp_session *sp; - struct snmp_internal_session *isp; -#if 1 /***/ /* replacing freeme by simpler and safer rp_next */ - struct request_list *rp, *rp_next = 0; -#endif/***/ placing freeme by simpler and safer rp_next*/n s */ replace... - */ - * ÿ¯ùsnmplib/snmp_api.cc.hÿ°…<Ðlib/snmp_api.c~~ñÿ±<ðÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±«=ÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²=0ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²Š=Pÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ³ -=pÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³‚ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×Áÿ³ùÿ´=ø%D(ÿ´_=à\BØÿ´©=˜4BØÿ´ø=ÈHBØÿµB>ÿµ]ÿµmÿµzÿµ >(ÿµ·ÿµÉÿµÖÿµï>@ÿ¶ÿ¶ ÿ¶4ÿ¶Pÿ¶rÿ¶~ÿ¶ˆ0ÿ¶Ÿÿ¶·ÿ¶Ù0¸ÿ·ÿ·#ÿ·/ÿ·>>Xÿ·V3/usr/people/wessels/.indent.proÿ¯èÿ¯ùÿ° ÿ°ÿ°.ÿ°?ÿ°Mÿ°[ÿ°pÿ°…ÿ°•ÿ°£ÿ°²ÿ°Åÿ°Ûÿ°ñÿ± -ÿ±ÿ±2ÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±™ÿ±«ÿ±ºÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²ÿ²ÿ²2ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²ÿ²Šÿ²™ÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ²öÿ³ -ÿ³ ÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³sÿ³‚ÿ³‘ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×ÿ³çÿ³ùÿ´ÿ´ÿ´ÿ´)ÿ´3ÿ´Cÿ´Oÿ´_ÿ´kÿ´tÿ´ÿ´ÿ´Ÿÿ´©ÿ´·ÿ´Åÿ´Òÿ´Ýÿ´íÿ´øÿµÿµÿµÿµ)ÿµ7ÿµBÿµMÿµ]ÿµmÿµzÿµ‰ÿµ ÿµ«ÿµ·ÿµÉÿµÖÿµâÿµïÿ¶ÿ¶ÿ¶ ÿ¶4ÿ¶?ÿ¶Pÿ¶bÿ¶rÿ¶~ÿ¶ˆÿ¶”ÿ¶Ÿÿ¶«ÿ¶·ÿ¶Éÿ¶Ùÿ¶íÿ·ÿ·ÿ·#ÿ·/ÿ·>ÿ·Lÿ·Vÿ·fÿ·q@ a failure occured. - */ -int -snmp_send(session, pdu) - struct snmp_session *session; - struct snmp_pdu *pdu; -{ - struct session_list *slp; - struct snmp_internal_session *isp = NULL; - u_char packet[PACKET_LENGTH]; - int length = PACKET_LENGTH; - struct request_list *rp; - struct timeval tv; - - for(slp = Sessions; slp; slp = slp->next){ - if (slp->session == session){ - isp = slp->internal; - break; - } - } - - if (! pdu) { - snmp_errno = SNMPERR_GENERR; - return 0; - } - - if (isp == NULL){ - snmp_errno = SNMPERR_BAD_SESSION; - return 0; - } - if (pdu->command == GET_REQ_MSG || pdu->command == GETNEXT_REQ_MSG - || pdu->command == GET_RSP_MSG || pdu->command == SET_REQ_MSG - || pdu->command == GETBULK_REQ_MSG ){ - if (pdu->reqid == SNMP_DEFAULT_REQID) - pdu->reqid = ++Reqid; - if (pdu->errstat == SNMP_DEFAULT_ERRSTAT) - pdu->errstat = 0; - if (pdu->errindex == SNMP_DEFAULT_ERRINDEX) - pdu->errindex = 0; - } else { - /* fill in trap defaults */ - pdu->reqid = 1; /* give a bogus non-error reqid for traps */ - if (pdu->enterprise_length == SNMP_DEFAULT_ENTERPRISE_LENGTH){ - pdu->enterprise = (oid *)calloc(1, sizeof(DEFAULT_ENTERPRISE)); - bcopy((char *)DEFAULT_ENTERPRISE, (char *)pdu->enterprise, sizeof(DEFAULT_ENTERPRISE)); - pdu->enterprise_length = sizeof(DEFAULT_ENTERPRISE)/sizeof(oid); - } - if (pdu->time == SNMP_DEFAULT_TIME) - pdu->time = DEFAULT_TIME; - } - if (pdu->address.sin_addr.s_addr == SNMP_DEFAULT_ADDRESS){ - if (isp->addr.sin_addr.s_addr != SNMP_DEFAULT_ADDRESS){ - bcopy((char *)&isp->addr, (char *)&pdu->address, sizeof(pdu->address)); - } else { - fprintf(stderr, "No remote IP address specified\n"); - snmp_errno = SNMPERR_BAD_ADDRESS; - return 0; - } - } - - - if (snmp_build(session, pdu, packet, &length, 0) < 0){ - fprintf(stderr, "Error building packet\n"); - snmp_errno = SNMPERR_GENERR; - return 0; - } -#if 1 /***/ - if (snmp_dump_packet){ - snmp_print_packet(packet, length, pdu->address, 1); - } -#endif /***/ - - gettimeofday(&tv, (struct timezone *)0); - if (sendto(isp->sd, (char *)packet, length, 0, (struct sockaddr *)&pdu->address, sizeof(pdu->address)) < 0){ - perror("sendto"); - snmp_errno = SNMPERR_GENERR; - return 0; - } - if (pdu->command == GET_REQ_MSG || pdu->command == GETNEXT_REQ_MSG - || pdu->command == SET_REQ_MSG || pdu->command == GETBULK_REQ_MSG ){ - /* set up to expect a response */ - rp = (struct request_list *)calloc(1, sizeof(struct request_list)); -#if 1 /***/ - if(! rp){ - fprintf(stderr, "Out of memory!\n"); - snmp_errno = SNMPERR_GENERR; - return 0; - } -#endif /***/ - rp->next_request = isp->requests; - isp->requests = rp; - rp->pdu = pdu; - rp->request_id = pdu->reqid; - - rp->retries = 1; - rp->timeout = session->timeout; - rp->time = tv; - tv.tv_usec += rp->timeout; - tv.tv_sec += tv.tv_usec / 1000000L; - tv.tv_usec %= 1000000L; - rp->expire = tv; -#if DEBUG_SNMPTRACE - snmp_print_trace(slp, rp, TRACE_SEND); -#endif - } - return pdu->reqid; -} - -/* - * Frees the pdu and any malloc'd data associated with it. - */ -void -snmp_free_pdu(struct snmp_pdu * pdu) -{ - struct variable_list *vp, *ovp; - - if (! pdu) - return; - - vp = pdu->variables; - while(vp){ - if (vp->name) { - free((char *)vp->name); - } - if (vp->val.string) { - free((char *)vp->val.string); - } - ovp = vp; - vp = vp->next_variable; - free((char *)ovp); - } - if (pdu->enterprise) { - free((char *)pdu->enterprise); - } - free((char *)pdu); -} - - -/* - * Checks to see if any of the fd's set in the fdset belong to - * snmp. Each socket with it's fd set has a packet read from it - * and snmp_parse is called on the packet received. The resulting pdu - * is passed to the callback routine for that session. If the callback - * routine returns successfully, the pdu and it's request are deleted. - */ -void -snmp_read(fdset) - fd_set *fdset; -{ - struct session_list *slp; - struct snmp_session *sp; - struct snmp_internal_session *isp; - u_char packet[PACKET_LENGTH]; - struct sockaddr_in from; - ssize_t length, fromlength; - struct snmp_pdu *pdu; - struct request_list *rp /**, *orp **/ ; - - for(slp = Sessions; slp; slp = slp->next){ - if (FD_ISSET(slp->internal->sd, fdset)){ - sp = slp->session; - isp = slp->internal; - fromlength = sizeof(from); - length = recvfrom(isp->sd, (char *)packet, PACKET_LENGTH, 0, (struct sockaddr *)&from, &fromlength); - if (length == -1) { - perror("recvfrom"); - return; - } -#if 1 /***/ - if (snmp_dump_packet){ - snmp_print_packet(packet, length, from, 0); - } - pdu = (struct snmp_pdu *)calloc(1, sizeof(struct snmp_pdu)); - - if(! pdu){ - fprintf(stderr, "Out of memory!\n"); - snmp_errno = SNMPERR_GENERR; - return; - } -#endif /***/ - - pdu->address = from; - pdu->reqid = 0; - pdu->variables = NULL; - pdu->enterprise = NULL; - pdu->enterprise_length = 0; - if (snmp_parse(sp, pdu, packet, length) < 0){ - fprintf(stderr, "Mangled packet\n"); - snmp_free_pdu(pdu); - return; - } - - if (pdu->command == GET_RSP_MSG || pdu->command == REPORT_MSG){ -#if 1 /***/ /* bug fix: illegal re-use of rp killed some requests */ - struct request_list *rp_next= 0; - for(rp = isp->requests; rp; rp = rp_next){ - rp_next = rp->next_request; - if (rp->request_id == pdu->reqid){ -#if DEBUG_SNMPTRACE - snmp_print_trace(slp, rp, TRACE_RECV); -#endif - if (sp->callback(RECEIVED_MESSAGE, sp, pdu->reqid, pdu, sp->callback_magic) == 1){ - /* successful, so delete request */ - free_one_request(isp, rp); - break; /* no more request with the same reqid */ - } - } - } -#endif /***/ - } else if (pdu->command == GET_REQ_MSG - || pdu->command == GETNEXT_REQ_MSG - || pdu->command == GETBULK_REQ_MSG - || pdu->command == TRP_REQ_MSG || pdu->command == SET_REQ_MSG) { -#if DEBUG_SNMPTRACE - snmp_print_trace(slp, NULL, TRACE_RECV); -#endif - sp->callback(RECEIVED_MESSAGE, sp, pdu->reqid, pdu, sp->callback_magic); - } - snmp_free_pdu(pdu); - } - } -} - -/* - * Returns info about what snmp requires from a select statement. - * numfds is the number of fds in the list that are significant. - * All file descriptors opened for SNMP are OR'd into the fdset. - * If activity occurs on any of these file descriptors, snmp_read - * should be called with that file descriptor set - * - * The timeout is the latest time that SNMP can wait for a timeout. The - * select should be done with the minimum time between timeout and any other - * timeouts necessary. This should be checked upon each invocation of select. - * If a timeout is received, snmp_timeout should be called to check if the - * timeout was for SNMP. (snmp_timeout is idempotent) - * - * Block is 1 if the select is requested to block indefinitely, rather - * than time out. If block is input as 1, the timeout value will be - * treated as undefined, but it must be available for setting in - * snmp_select_info. On return, if block is true, the value of - * timeout will be undefined. - * - * snmp_select_info returns the number of open sockets. (i.e. The - * number of sessions open) - */ -int -snmp_select_info(numfds, fdset, timeout, block) - int *numfds; - fd_set *fdset; - struct timeval *timeout; - int *block; /* should the select block until input arrives (i.e. no input) */ -{ - struct session_list *slp; - struct snmp_internal_session *isp; - struct request_list *rp; - struct timeval now, earliest; - int active = 0, requests = 0; - - timerclear(&earliest); - /* - * For each request outstanding, add it's socket to the fdset, - * and if it is the earliest timeout to expire, mark it as lowest. - */ - for (slp = Sessions; slp; slp = slp->next) { - active++; - isp = slp->internal; - if ((isp->sd + 1) > *numfds) - *numfds = (isp->sd + 1); - FD_SET(isp->sd, fdset); - if (isp->requests) { - /* found another session with outstanding requests */ - requests++; - for (rp = isp->requests; rp; rp = rp->next_request) { - if (!timerisset(&earliest) || timercmp(&rp->expire, &earliest, <)) - earliest = rp->expire; - } - } - } - if (requests == 0) /* if none are active, skip arithmetic */ - return active; - - /* - * Now find out how much time until the earliest timeout. This - * transforms earliest from an absolute time into a delta time, the - * time left until the select should timeout. - */ - gettimeofday(&now, (struct timezone *) 0); - earliest.tv_sec--; /* adjust time to make arithmetic easier */ - earliest.tv_usec += 1000000L; - earliest.tv_sec -= now.tv_sec; - earliest.tv_usec -= now.tv_usec; - while (earliest.tv_usec >= 1000000L) { - earliest.tv_usec -= 1000000L; - earliest.tv_sec += 1; - } - if (earliest.tv_sec < 0) { - earliest.tv_sec = 0; - earliest.tv_usec = 0; - } - /* if it was blocking before or our delta time is less, reset timeout */ - if (*block == 1 || timercmp(&earliest, timeout, <)) { - *timeout = earliest; - *block = 0; - } - return active; -} - -/* - * snmp_timeout should be called whenever the timeout from - * snmp_select_info expires, but it is idempotent, so snmp_timeout can - * be polled (probably a cpu expensive proposition). snmp_timeout - * checks to see if any of the sessions have an outstanding request - * that has timed out. If it finds one (or more), and that pdu has - * more retries available, a new packet is formed from the pdu and is - * resent. If there are no more retries available, the callback for - * the session is used to alert the user of the timeout. - */ -void -snmp_timeout() -{ - struct session_list *slp; - struct snmp_session *sp; - struct snmp_internal_session *isp; -#if 1 /***/ /* replacing freeme by simpler and safer rp_next */ - struct request_list *rp, *rp_next = 0; - */ - cp = asn_build_int(cp, &length, (u_char)TIMETICKS, - (long *)&pdu->time, sizeof(pdu->time)); - if (cp == NULL) - return -1; - } - if (length < totallength) - return -1; - bcopy((char *)buf, (char *)cp, totallength); - totallength += cp - packet; - - length = PACKET_LENGTH; - cp = asn_build_header(buf, &length, (u_char)pdu->command, totallength); - if (cp == NULL) - return -1; - if (length < totallength) - return -1; - bcopy((char *)packet, (char *)cp, totallength); - totallength += cp - buf; - - length = *out_length; - - cp = snmp_auth_build( packet, &length, session, is_agent, totallength ); - if (cp == NULL) - return -1; - if ((*out_length - (cp - packet)) < totallength) - return -1; - bcopy((char *)buf, (char *)cp, totallength); - totallength += cp - packet; - *out_length = totallength; - - if( session->qoS & USEC_QOS_AUTH ) - md5Digest( packet, totallength, cp - (session->contextLen + 16), - cp - (session->contextLen + 16) ); - - return 0; -} - -/* - * Parses the packet received on the input session, and places the data into - * the input pdu. length is the length of the input packet. If any errors - * are encountered, -1 is returned. Otherwise, a 0 is returned. - */ -static int -snmp_parse(session, pdu, data, length) - struct snmp_session *session; - struct snmp_pdu *pdu; - u_char *data; - int length; -{ - u_char msg_type; - u_char type; - u_char *var_val; - long version; - int len, four; - u_char community[256]; - int community_length = 256; - struct variable_list *vp = 0; - oid objid[MAX_NAME_LEN], *op; - u_char *origdata = data; - int origlength = length; - int ret = 0; - u_char *save_data; - - /* authenticates message and returns length if valid */ - data = snmp_auth_parse(data, &length, community, &community_length, &version); - if (data == NULL) - return -1; - - if( version != SNMP_VERSION_1 && version != SNMP_VERSION_2C && version != SNMP_VERSION_2 ) { - fprintf(stderr, "Wrong version: %ld\n", version); - return -1; - } - - save_data = data; - - data = asn_parse_header(data, &length, &msg_type); - if (data == NULL) - return -1; - pdu->command = msg_type; - - if( session->authenticator ) { - ret = session->authenticator( origdata, origlength, save_data - community_length, - community_length, session, pdu ); - if( ret < 0 ) return ret; - } - - if (pdu->command != TRP_REQ_MSG){ - data = asn_parse_int(data, &length, &type, (long *)&pdu->reqid, sizeof(pdu->reqid)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->errstat, sizeof(pdu->errstat)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->errindex, sizeof(pdu->errindex)); - if (data == NULL) - return -1; - } else { - pdu->enterprise_length = MAX_NAME_LEN; - data = asn_parse_objid(data, &length, &type, objid, &pdu->enterprise_length); - if (data == NULL) - return -1; - pdu->enterprise = (oid *)calloc(1, pdu->enterprise_length * sizeof(oid)); - bcopy((char *)objid, (char *)pdu->enterprise, pdu->enterprise_length * sizeof(oid)); - - four = 4; - data = asn_parse_string(data, &length, &type, (u_char *)&pdu->agent_addr.sin_addr.s_addr, &four); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->trap_type, sizeof(pdu->trap_type)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->specific_type, sizeof(pdu->specific_type)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->time, sizeof(pdu->time)); - if (data == NULL) - return -1; - } - data = asn_parse_header(data, &length, &type); - if (data == NULL) - return -1; - if (type != (u_char)(ASN_SEQUENCE | ASN_CONSTRUCTOR)) - return -1; - while((int)length > 0){ - if (pdu->variables == NULL){ - pdu->variables = vp = (struct variable_list *)calloc(1, sizeof(struct variable_list)); - } else { - vp->next_variable = (struct variable_list *)calloc(1, sizeof(struct variable_list)); - vp = vp->next_variable; - } - vp->next_variable = NULL; - vp->val.string = NULL; - vp->name = NULL; - vp->name_length = MAX_NAME_LEN; - data = snmp_parse_var_op(data, objid, &vp->name_length, &vp->type, &vp->val_len, &var_val, (int *)&length); - if (data == NULL) - return -1; - op = (oid *)calloc(1, (unsigned)vp->name_length * sizeof(oid)); - bcopy((char *)objid, (char *)op, vp->name_length * sizeof(oid)); - vp->name = op; - - len = PACKET_LENGTH; - switch((short)vp->type){ - case ASN_INTEGER: - vp->val.integer = (long *)calloc(1, sizeof(long)); - vp->val_len = sizeof(long); - asn_parse_int(var_val, &len, &vp->type, (long *)vp->val.integer, sizeof(vp->val.integer)); - break; - case COUNTER: - case GAUGE: - case TIMETICKS: - case UINTEGER: - vp->val.integer = (long *)calloc(1, sizeof(unsigned long)); - vp->val_len = sizeof(unsigned long); - asn_parse_unsigned_int(var_val, &len, &vp->type, (unsigned long *)vp->val.integer, sizeof(vp->val.integer)); - break; - case COUNTER64: - vp->val.counter64 = (struct counter64 *)calloc(1, sizeof(struct counter64) ); - vp->val_len = sizeof(struct counter64); - asn_parse_unsigned_int64(var_val, &len, &vp->type, - (struct counter64 *)vp->val.counter64, - sizeof(*vp->val.counter64)); - break; - case ASN_OCTET_STR: - case IPADDRESS: - case OPAQUE: - case NSAP: - vp->val.string = (u_char *)calloc(1, (unsigned)vp->val_len); - asn_parse_string(var_val, &len, &vp->type, vp->val.string, &vp->val_len); - break; - case ASN_OBJECT_ID: - vp->val_len = MAX_NAME_LEN; - asn_parse_objid(var_val, &len, &vp->type, objid, &vp->val_len); - vp->val_len *= sizeof(oid); - vp->val.objid = (oid *)calloc(1, (unsigned)vp->val_len); - bcopy((char *)objid, (char *)vp->val.objid, vp->val_len); - break; - case SNMP_NOSUCHOBJECT: - case SNMP_NOSUCHINSTANCE: - case SNMP_ENDOFMIBVIEW: - case ASN_NULL: - break; - default: - fprintf(stderr, "bad type returned (%x)\n", vp->type); - break; - } - } - return ret; -} - -/* - * Sends the input pdu on the session after calling snmp_build to create - * a serialized packet. If necessary, set some of the pdu data from the - * session defaults. Add a request corresponding to this pdu to the list - * of outstanding requests on this session, then send the pdu. - * Returns the request id of the generated packet if applicable, otherwise 1. - * On any error, 0 is returned. - * The pdu is freed by snmp_send() unlessBÐ+= m -È /* 0¸*/ BNMPTو */cfor testing purposes */e key! replace... - */ - * ÿ¯ùsnmplib/snmp_api.cc.hÿ°…<Ðlib/snmp_api.c~~ñÿ±<ðÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±«=ÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²=0ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²Š=Pÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ³ -=pÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³‚ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×Áÿ³ùÿ´=ø%D(ÿ´_=à\BØÿ´©=˜4BØÿ´ø=ÈHBØÿµB>ÿµ]ÿµmÿµzÿµ >(ÿµ·ÿµÉÿµÖÿµï>@ÿ¶ÿ¶ ÿ¶4ÿ¶Pÿ¶rÿ¶~ÿ¶ˆ0ÿ¶Ÿ4¨ÿ¶·ÿ¶Ù‰èÿ·ÿ·#ÿ·/ÿ·>>Xÿ·V3/usr/people/wessels/.indent.proÿ¯èÿ¯ùÿ° ÿ°ÿ°.ÿ°?ÿ°Mÿ°[ÿ°pÿ°…ÿ°•ÿ°£ÿ°²ÿ°Åÿ°Ûÿ°ñÿ± -ÿ±ÿ±2ÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±™ÿ±«ÿ±ºÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²ÿ²ÿ²2ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²ÿ²Šÿ²™ÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ²öÿ³ -ÿ³ ÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³sÿ³‚ÿ³‘ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×ÿ³çÿ³ùÿ´ÿ´ÿ´ÿ´)ÿ´3ÿ´Cÿ´Oÿ´_ÿ´kÿ´tÿ´ÿ´ÿ´Ÿÿ´©ÿ´·ÿ´Åÿ´Òÿ´Ýÿ´íÿ´øÿµÿµÿµÿµ)ÿµ7ÿµBÿµMÿµ]ÿµmÿµzÿµ‰ÿµ ÿµ«ÿµ·ÿµÉÿµÖÿµâÿµïÿ¶ÿ¶ÿ¶ ÿ¶4ÿ¶?ÿ¶Pÿ¶bÿ¶rÿ¶~ÿ¶ˆÿ¶”ÿ¶Ÿÿ¶«ÿ¶·ÿ¶Éÿ¶Ùÿ¶íÿ·ÿ·ÿ·#ÿ·/ÿ·>ÿ·Lÿ·Vÿ·fÿ·q°>X 4¨ $  @,2ˆ…>X‚àC Ž0   ¸ude/snmp_groupvars.h~ àude/snmp_groupvars.h ŽX Ž€ Ž¨ ŽÐ „©/*********************************************************** - Copyright 1989 by Carnegie Mellon University - - All Rights Reserved - -Permission to use, copy, modify, and distribute this software and its -documentation for any purpose and without fee is hereby granted, -provided that the above copyright notice appear in all copies and that -both that copyright notice and this permission notice appear in -supporting documentation, and that the name of CMU not be -used in advertising or publicity pertaining to distribution of the -software without specific, written prior permission. - -CMU DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING -ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL -CMU BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR -ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, -WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, -ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS -SOFTWARE. -******************************************************************/ -/* - * snmp_api.c - API for access to snmp. - */ -#define DEBUG_SNMPTRACE 0 /* set to 1 to print all SNMP actions */ -#define DEBUG_SNMPFULLDUMP 0 /* set to 1 to dump all SNMP packets */ - -#include -#include -#include -#include -#include -#include -#include -#ifdef linux -#include -#include -#include -#include -#endif - - -#include "asn1.h" -#include "snmp.h" -#include "snmp_impl.h" -#include "snmp_api.h" -#include "snmp_client.h" - -#define PACKET_LENGTH 4500 - -#ifndef BSD4_3 -#define BSD4_2 -#endif - -#if !defined(BSD4_3) && !defined(linux) && !defined(sun) - -typedef long fd_mask; -#define NFDBITS (sizeof(fd_mask) * NBBY) /* bits per mask */ - -#define FD_SET(n, p) ((p)->fds_bits[(n)/NFDBITS] |= (1 << ((n) % NFDBITS))) -#define FD_CLR(n, p) ((p)->fds_bits[(n)/NFDBITS] &= ~(1 << ((n) % NFDBITS))) -#define FD_ISSET(n, p) ((p)->fds_bits[(n)/NFDBITS] & (1 << ((n) % NFDBITS))) -#define FD_ZERO(p) bzero((char *)(p), sizeof(*(p))) -#endif - -oid default_enterprise[] = {1, 3, 6, 1, 4, 1, 3, 1, 1}; /* enterprises.cmu.systems.cmuSNMP */ - -#define DEFAULT_COMMUNITY "public" -#define DEFAULT_REMPORT SNMP_PORT -#define DEFAULT_ENTERPRISE default_enterprise -#define DEFAULT_TIME 0 -#define DEFAULT_MMS 1389 /* large, randomly picked for testing purposes */ - -/* - * Internal information about the state of the snmp session. - */ -struct snmp_internal_session { - int sd; /* socket descriptor for this connection */ - ipaddr addr; /* address of connected peer */ - struct request_list *requests;/* Info about outstanding requests */ -}; - -/* - * A list of all the outstanding requests for a particular session. - */ -struct request_list { - struct request_list *next_request; - u_long request_id; /* request id */ - int retries; /* Number of retries */ - u_long timeout; /* length to wait for timeout */ - struct timeval time; /* Time this request was made */ - struct timeval expire; /* time this request is due to expire */ - struct snmp_pdu *pdu; /* The pdu for this request (saved so it can be retransmitted */ -}; - -/* - * The list of active/open sessions. - */ -struct session_list { - struct session_list *next; - struct snmp_session *session; - struct snmp_internal_session *internal; -}; - -struct session_list *Sessions = NULL; - -u_long Reqid = 0; -int snmp_errno = 0; - -char *api_errors[4] = { - "Unknown session", - "Unknown host", - "Invalid local port", - "Unknown Error" -}; - - -void sync_with_agent(); -int parse_app_community_string(); -void snmp_synch_setup(); -int snmp_synch_response(); -void md5Digest(); - - -static char * -api_errstring(snmp_errnumber) - int snmp_errnumber; -{ - if (snmp_errnumber <= SNMPERR_BAD_SESSION && snmp_errnumber >= SNMPERR_GENERR){ - return api_errors[snmp_errnumber + 4]; - } else { - return "Unknown Error"; - } -} - -#if 0 -/* - * Gets initial request ID for all transactions. - */ -static void -init_snmp(){ - struct timeval tv; - - gettimeofday(&tv, (struct timezone *)0); - srandom(tv.tv_sec ^ tv.tv_usec); - Reqid = random(); -} -#endif - - -/* - * Dump snmp packet to stdout: - */ -static void -snmp_print_packet(packet, length, addr, code) - char *packet; - int length; - ipaddr addr; - int code; -{ - if(length < 0) { - return; - } - if (code <= 0) { /* received */ - printf("\nReceived %4d bytes from ", length); - } - else { /* sending */ - printf("\nSending %4d bytes to ", length); - } - printf("%s:", inet_ntoa(addr.sin_addr)); -#if DEBUG_SNMPFULLDUMP - for (count = 0; count < length; count++) { - if ((count & 15) == 0) { - printf("\n "); - } - printf("%02X ", (int)(packet[count]&255)); - } -#endif - fflush(stdout); -} - -#if DEBUG_SNMPTRACE -/* - * Print request - */ -#define TRACE_SEND (0) -#define TRACE_RECV (1) -#define TRACE_TIMEOUT (2) -static void -snmp_print_trace(slp, rp, code) - struct session_list *slp; - struct request_list *rp; - int code; -{ - int reqid=0, retries=1; - if( rp ){ - reqid = rp->request_id; - retries = rp->retries; - } - printf("\n Session %2d ReqId %4d ", slp->internal->sd, reqid); - switch(code) - { - case TRACE_SEND: printf("send pdu (%d)", retries);break; - case TRACE_RECV: printf("recv pdu");break; - case TRACE_TIMEOUT: printf("time out");break; - } - fflush(stdout); -} -#endif /* DEBUG_SNMPTRACE */ - - - - -/* - * Sets up the session with the snmp_session information provided - * by the user. Then opens and binds the necessary UDP port. - * A handle to the created session is returned (this is different than - * the pointer passed to snmp_open()). On any error, NULL is returned - * and snmp_errno is set to the appropriate error code. - */ -struct snmp_session * -snmp_open(session) - struct snmp_session *session; -{ - struct session_list *slp; - struct snmp_internal_session *isp; - u_char *cp; - int sd; - u_long addr; - struct sockaddr_in me; - struct hostent *hp; - struct servent *servp; - extern int check_received_pkt(); - - /* Copy session structure and link into list */ - slp = (struct session_list *)calloc(1, sizeof(struct session_list)); - slp->internal = isp = (struct snmp_internal_session *)calloc(1, sizeof(struct snmp_internal_session)); - bzero((char *)isp, sizeof(struct snmp_internal_session)); - slp->internal->sd = -1; /* mark it not set */ - slp->session = (struct snmp_session *)calloc(1, sizeof(struct snmp_session)); - bcopy((char *)session, (char *)slp->session, sizeof(struct snmp_session)); - session = slp->session; - /* now link it in. */ - slp->next = Sessions; - Sessions = slp; - - /* - * session now points to the new structure that still contains pointers to - * data allocated elsewhere. Some of this data is copied to space malloc'd - * here, and the pointer replaced with the new one. - */ - - if (session->peername != NULL){ - cp = (u_char *)calloc(1, (unsigned)strlen(session->peername) + 1); - strcpy((char *)cp, session->peername); - session->peername = (char *)cp; - } - - if (session->retries == SNMP_DEFAULT_RETRIES) - session->retries = SNMP_API_DEFAULT_RETRIES; - if (session->timeout == SNMP_DEFAULT_TIMEOUT) - session->timeout = SNMP_API_DEFAULT_TIMEOUT; - if (session->MMS == 0 ) - session->MMS = DEFAULT_MMS; - isp->requests = NULL; - - - /* Fill in defaults if necessary */ - if (session->community_len != SNMP_DEFAULT_COMMUNITY_LEN){ - if( *session->community == '+' ) { - session->community_len--; - cp = (u_char *) calloc(1, (unsigned) session->community_len); - bcopy((char *) session->community+1, (char *)cp, - session->community_len); - session->version = SNMP_VERSION_2C; - } else { - cp = (u_char *) calloc(1, (unsigned) session->community_len); - bcopy((char *) session->community, (char *) cp, - session->community_len); - } - - } else { - session->community_len = strlen(DEFAULT_COMMUNITY); - cp = (u_char *)calloc(1, (unsigned)session->community_len); - bcopy((char *)DEFAULT_COMMUNITY, (char *)cp, session->community_len); - } - - /* Set up connections */ - sd = socket(AF_INET, SOCK_DGRAM, 0); - if (sd < 0){ - perror("socket"); - snmp_errno = SNMPERR_GENERR; - if (!snmp_close(session)){ - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", api_errstring(snmp_errno)); - exit(1); - } - return 0; - } - isp->sd = sd; - - if (session->peername != SNMP_DEFAULT_PEERNAME){ - if ((addr = inet_addr(session->peername)) != -1){ - bcopy((char *)&addr, (char *)&isp->addr.sin_addr, sizeof(isp->addr.sin_addr)); - } else { - hp = gethostbyname(session->peername); - if (hp == NULL){ - fprintf(stderr, "unknown host: %s\n", session->peername); - snmp_errno = SNMPERR_BAD_ADDRESS; - if (!snmp_close(session)){ - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", api_errstring(snmp_errno)); - exit(2); - } - return 0; - } else { - bcopy((char *)hp->h_addr, (char *)&isp->addr.sin_addr, hp->h_length); - } - } - isp->addr.sin_family = AF_INET; - if (session->remote_port == SNMP_DEFAULT_REMPORT){ - /*servp = getservbyname("snmp", "udp");*/ - servp=NULL; - if (servp != NULL){ - isp->addr.sin_port = servp->s_port; - } else { - isp->addr.sin_port = htons(SNMP_PORT); - } - } else { - isp->addr.sin_port = htons(session->remote_port); - } - } else { - isp->addr.sin_addr.s_addr = SNMP_DEFAULT_ADDRESS; - } - - me.sin_family = AF_INET; - me.sin_addr.s_addr = INADDR_ANY; - me.sin_port = htons(session->local_port); - if (bind(sd, (struct sockaddr *)&me, sizeof(me)) != 0){ - perror("bind"); - snmp_errno = SNMPERR_BAD_LOCPORT; - if (! snmp_close(session)){ - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", - api_errstring(snmp_errno)); - exit(3); - } - return 0; - } - - if( *cp == '/' ) { - session->authenticator = check_received_pkt; - sync_with_agent(session); - parse_app_community_string( session ); - session->qoS |= USEC_QOS_GENREPORT; - } - - /* replace comm pointer with pointer to new data: */ - session->community = cp; - - return session; -} - -void -sync_with_agent( session ) -struct snmp_session *session; -{ - struct snmp_pdu *pdu, *response = 0; - int status; - - session->qoS = USEC_QOS_GENREPORT; - session->userLen = 6; - session->version = SNMP_VERSION_2; - strcpy( session->userName, "public" ); - - snmp_synch_setup(session); - pdu = snmp_pdu_create(GET_REQ_MSG); - status = snmp_synch_response(session, pdu, &response); - - if (status == STAT_SUCCESS){ - memcpy( session->agentID, response->params.agentID, 12 ); - - /* save the clocks -- even though they are not authentic */ - session->agentBoots = response->params.agentBoots; - session->agentTime = response->params.agentTime; - session->agentClock = response->params.agentTime - time(NULL); - - } else { - if (status == STAT_TIMEOUT){ - printf("No Response from %s\n", session->peername); - } else { /* status == STAT_ERROR */ - printf("An error occurred, Quitting\n"); - } - exit( -1 ); - } - - /** freed to early: - snmp_free_pdu(pdu); - if (response) snmp_free_pdu(response); - **/ -} -#if 1 /***/ -/* - * Unlink one element from input request list, - * then free it and it's pdu. - */ -static void -free_one_request(isp, orp) - struct snmp_internal_session *isp; - struct request_list *orp; -{ - struct request_list *rp; - if(! orp) return; - if(isp->requests == orp){ - isp->requests = orp->next_request; /* unlink head */ - } - else{ - for(rp = isp->requests; rp; rp = rp->next_request){ - if(rp->next_request == orp){ - rp->next_request = orp->next_request; /* unlink element */ - break; - } - } - } - if (orp->pdu != NULL){ - snmp_free_pdu(orp->pdu); - } - free((char *)orp); -} -#endif /***/ -/* - * Free each element in the input request list. - */ -static void -free_request_list(rp) - struct request_list *rp; -{ - struct request_list *orp; - - while(rp){ - orp = rp; - rp = rp->next_request; - if (orp->pdu != NULL) - snmp_free_pdu(orp->pdu); - free((char *)orp); - } -} - -/* - * Close the input session. Frees all data allocated for the session, - * dequeues any pending requests, and closes any sockets allocated for - * the session. Returns 0 on error, 1 otherwise. - */ -int -snmp_close(session) - struct snmp_session *session; -{ - struct session_list *slp = NULL, *oslp = NULL; - - if (Sessions->session == session){ /* If first entry */ - slp = Sessions; - Sessions = slp->next; - } else { - for(slp = Sessions; slp; slp = slp->next){ - if (slp->session == session){ - if (oslp) /* if we found entry that points here */ - oslp->next = slp->next; /* link around this entry */ - break; - } - oslp = slp; - } - } - /* If we found the session, free all data associated with it */ - if (slp){ - if (slp->session->community != NULL) - free((char *)slp->session->community); - if(slp->session->peername != NULL) - free((char *)slp->session->peername); - free((char *)slp->session); - if (slp->internal->sd != -1) - close(slp->internal->sd); - free_request_list(slp->internal->requests); - free((char *)slp->internal); - free((char *)slp); - } else { - snmp_errno = SNMPERR_BAD_SESSION; - return 0; - } - return 1; -} - -/* - * Takes a session and a pdu and serializes the ASN PDU into the area - * pointed to by packet. out_length is the size of the data area available. - * Returns the length of the completed packet in out_length. If any errors - * occur, -1 is returned. If all goes well, 0 is returned. - */ -int -snmp_build(session, pdu, packet, out_length, is_agent) - struct snmp_session *session; - struct snmp_pdu *pdu; - u_char *packet; - int *out_length; - int is_agent; -{ - u_char buf[PACKET_LENGTH]; - u_char *cp; - struct variable_list *vp; - int length; - int totallength; - - length = *out_length; - cp = packet; - for(vp = pdu->variables; vp; vp = vp->next_variable){ - cp = snmp_build_var_op(cp, vp->name, &vp->name_length, vp->type, vp->val_len, (u_char *)vp->val.string, &length); - if (cp == NULL) - return -1; - } - totallength = cp - packet; - - length = PACKET_LENGTH; - cp = asn_build_header(buf, &length, (u_char)(ASN_SEQUENCE | ASN_CONSTRUCTOR), totallength); - if (cp == NULL) - return -1; - bcopy((char *)packet, (char *)cp, totallength); - totallength += cp - buf; - - length = *out_length; - if (pdu->command != TRP_REQ_MSG){ - /* request id */ - cp = asn_build_int(packet, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->reqid, sizeof(pdu->reqid)); - if (cp == NULL) - return -1; - /* error status */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->errstat, sizeof(pdu->errstat)); - if (cp == NULL) - return -1; - /* error index */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->errindex, sizeof(pdu->errindex)); - if (cp == NULL) - return -1; - } else { /* this is a trap message */ - /* enterprise */ - cp = asn_build_objid(packet, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_OBJECT_ID), - (oid *)pdu->enterprise, pdu->enterprise_length); - if (cp == NULL) - return -1; - /* agent-addr */ - cp = asn_build_string(cp, &length, (u_char)IPADDRESS, - (u_char *)&pdu->agent_addr.sin_addr.s_addr, sizeof(pdu->agent_addr.sin_addr.s_addr)); - if (cp == NULL) - return -1; - /* generic trap */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->trap_type, sizeof(pdu->trap_type)); - if (cp == NULL) - return -1; - /* specific trap */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->specific_type, sizeof(pdu->specific_type)); - if (cp == NULL) - return -1; - /* timestamp */ - cp = asn_build_int(cp, &length, (u_char)TIMETICKS, - (long *)&pdu->time, sizeof(pdu->time)); - if (cp == NULL) - return -1; - } - if (length < totallength) - return -1; - bcopy((char *)buf, (char *)cp, totallength); - totallength += cp - packet; - - length = PACKET_LENGTH; - cp = asn_build_header(buf, &length, (u_char)pdu->command, totallength); - if (cp == NULL) - return -1; - if (length < totallength) - return -1; - bcopy((char *)packet, (char *)cp, totallength); - totallength += cp - buf; - - length = *out_length; - - cp = snmp_auth_build( packet, &length, session, is_agent, totallength ); - if (cp == NULL) - return -1; - if ((*out_length - (cp - packet)) < totallength) - return -1; - bcopy((char *)buf, (char *)cp, totallength); - totallength += cp - packet; - *out_length = totallength; - - if( session->qoS & USEC_QOS_AUTH ) - md5Digest( packet, totallength, cp - (session->contextLen + 16), - cp - (session->contextLen + 16) ); - - return 0; -} - -/* - * Parses the packet received on the input session, and places the data into - * the input pdu. length is the length of the input packet. If any errors - * are encountered, -1 is returned. Otherwise, a 0 is returned. - */ -static int -snmp_parse(session, pdu, data, length) - struct snmp_session *session; - struct snmp_pdu *pdu; - u_char *data; - int length; -{ - u_char msg_type; - u_char type; - u_char *var_val; - long version; - int len, four; - u_char community[256]; - int community_length = 256; - struct variable_list *vp = 0; - oid objid[MAX_NAME_LEN], *op; - u_char *origdata = data; - int origlength = length; - int ret = 0; - u_char *save_data; - - /* authenticates message and returns length if valid */ - data = snmp_auth_parse(data, &length, community, &community_length, &version); - if (data == NULL) - return -1; - - if( version != SNMP_VERSION_1 && version != SNMP_VERSION_2C && version != SNMP_VERSION_2 ) { - fprintf(stderr, "Wrong version: %ld\n", version); - return -1; - } - - save_data = data; - - data = asn_parse_header(data, &length, &msg_type); - if (data == NULL) - return -1; - pdu->command = msg_type; - - if( session->authenticator ) { - ret = session->authenticator( origdata, origlength, save_data - community_length, - community_length, session, pdu ); - if( ret < 0 ) return ret; - } - - if (pdu->command != TRP_REQ_MSG){ - data = asn_parse_int(data, &length, &type, (long *)&pdu->reqid, sizeof(pdu->reqid)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->errstat, sizeof(pdu->errstat)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->errindex, sizeof(pdu->errindex)); - if (data == NULL) - return -1; - } else { - pdu->enterprise_length = MAX_NAME_LEN; - data = asn_parse_objid(data, &length, &type, objid, &pdu->enterprise_length); - if (data == NULL) - return -1; - pdu->enterprise = (oid *)calloc(1, pdu->enterprise_length * sizeof(oid)); - bcopy((char *)objid, (char *)pdu->enterprise, pdu->enterprise_length * sizeof(oid)); - - four = 4; - data = asn_parse_string(data, &length, &type, (u_char *)&pdu->agent_addr.sin_addr.s_addr, &four); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->trap_type, sizeof(pdu->trap_type)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->specific_type, sizeof(pdu->specific_type)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->time, sizeof(pdu->time)); - if (data == NULL) - return -1; - } - data = asn_parse_header(data, &length, &type); - if (data == NULL) - return -1; - if (type != (u_char)(ASN_SEQUENCE | ASN_CONSTRUCTOR)) - return -1; - while((int)length > 0){ - if (pdu->variables == NULL){ - pdu->variables = vp = (struct variable_list *)calloc(1, sizeof(struct variable_list)); - } else { - vp->next_variable = (struct variable_list *)calloc(1, sizeof(struct variable_list)); - vp = vp->next_variable; - } - vp->next_variable = NULL; - vp->val.string = NULL; - vp->name = NULL; - vp->name_length = MAX_NAME_LEN; - data = snmp_parse_var_op(data, objid, &vp->name_length, &vp->type, &vp->val_len, &var_val, (int *)&length); - if (data == NULL) - return -1; - op = (oid *)calloc(1, (unsigned)vp->name_length * sizeof(oid)); - bcopy((char *)objid, (char *)op, vp->name_length * sizeof(oid)); - vp->name = op; - - len = PACKET_LENGTH; - switch((short)vp->type){ - case ASN_INTEGER: - vp->val.integer = (long *)calloc(1, sizeof(long)); - vp->val_len = sizeof(long); - asn_parse_int(var_val, &len, &vp->type, (long *)vp->val.integer, sizeof(vp->val.integer)); - break; - case COUNTER: - case GAUGE: - case TIMETICKS: - case UINTEGER: - vp->val.integer = (long *)calloc(1, sizeof(unsigned long)); - vp->val_len = sizeof(unsigned long); - asn_parse_unsigned_int(var_val, &len, &vp->type, (unsigned long *)vp->val.integer, sizeof(vp->val.integer)); - break; - case COUNTER64: - vp->val.counter64 = (struct counter64 *)calloc(1, sizeof(struct counter64) ); - vp->val_len = sizeof(struct counter64); - asn_parse_unsigned_int64(var_val, &len, &vp->type, - (struct counter64 *)vp->val.counter64, - sizeof(*vp->val.counter64)); - break; - case ASN_OCTET_STR: - case IPADDRESS: - case OPAQUE: - case NSAP: - vp->val.string = (u_char *)calloc(1, (unsigned)vp->val_len); - asn_parse_string(var_val, &len, &vp->type, vp->val.string, &vp->val_len); - break; - case ASN_OBJECT_ID: - vp->val_len = MAX_NAME_LEN; - asn_parse_objid(var_val, &len, &vp->type, objid, &vp->val_len); - vp->val_len *= sizeof(oid); - vp->val.objid = (oid *)calloc(1, (unsigned)vp->val_len); - bcopy((char *)objid, (char *)vp->val.objid, vp->val_len); - break; - case SNMP_NOSUCHOBJECT: - case SNMP_NOSUCHINSTANCE: - case SNMP_ENDOFMIBVIEW: - case ASN_NULL: - break; - default: - fprintf(stderr, "bad type returned (%x)\n", vp->type); - break; - } - } - return ret; -} - -/* - * Sends the input pdu on the session after calling snmp_build to create - * a serialized packet. If necessary, set some of the pdu data from the - * session defaults. Add a request corresponding to this pdu to the list - * of outstanding requests on this session, then send the pdu. - * Returns the request id of the generated packet if applicable, otherwise 1. - * On any error, 0 is returned. - * The pdu is freed by snmp_send() unless a failure occured. - */ -int -snmp_send(session, pdu) - struct snmp_session *session; - struct snmp_pdu *pdu; -{ - struct session_list *slp; - struct snmp_internal_session *isp = NULL; - u_char packet[PACKET_LENGTH]; - int length = PACKET_LENGTH; - struct request_list *rp; - struct timeval tv; - - for(slp = Sessions; slp; slp = slp->next){ - if (slp->session == session){ - isp = slp->internal; - break; - } - } - - if (! pdu) { - snmp_errno = SNMPERR_GENERR; - return 0; - } - - if (isp == NULL){ - snmp_errno = SNMPERR_BAD_SESSION; - return 0; - } - if (pdu->command == GET_REQ_MSG || pdu->command == GETNEXT_REQ_MSG - || pdu->command == GET_RSP_MSG || pdu->command == SET_REQ_MSG - || pdu->command == GETBULK_REQ_MSG ){ - if (pdu->reqid == SNMP_DEFAULT_REQID) - pdu->reqid = ++Reqid; - if (pdu->errstat == SNMP_DEFAULT_ERRSTAT) - pdu->errstat = 0; - if (pdu->errindex == SNMP_DEFAULT_ERRINDEX) - pdu->errindex = 0; - } else { - /* fill in trap defaults */ - pdu->reqid = 1; /* give a bogus non-error reqid for traps */ - if (pdu->enterprise_length == SNMP_DEFAULT_ENTERPRISE_LENGTH){ - pdu->enterprise = (oid *)calloc(1, sizeof(DEFAULT_ENTERPRISE)); - bcopy((char *)DEFAULT_ENTERPRISE, (char *)pdu->enterprise, sizeof(DEFAULT_ENTERPRISE)); - pdu->enterprise_length = sizeof(DEFAULT_ENTERPRISE)/sizeof(oid); - } - if (pdu->time == SNMP_DEFAULT_TIME) - pdu->time = DEFAULT_TIME; - } - if (pdu->address.sin_addr.s_addr == SNMP_DEFAULT_ADDRESS){ - if (isp->addr.sin_addr.s_addr != SNMP_DEFAULT_ADDRESS){ - bcopy((char *)&isp->addr, (char *)&pdu->address, sizeof(pdu->address)); - } else { - fprintf(stderr, "No remote IP address specified\n"); - snmp_errno = SNMPERR_BAD_ADDRESS; - return 0; - } - } - - - if (snmp_build(session, pdu, packet, &length, 0) < 0){ - fprintf(stderr, "Error building packet\n"); - snmp_errno = SNMPERR_GENERR; - return 0; - } -#if 1 /***/ - if (snmp_dump_packet){ - snmp_print_packet(packet, length, pdu->address, 1); - } -#endif /***/ - - gettimeofday(&tv, (struct timezone *)0); - if (sendto(isp->sd, (char *)packet, length, 0, (struct sockaddr *)&pdu->address, sizeof(pdu->address)) < 0){ - perror("sendto"); - snmp_errno = SNMPERR_GENERR; - return 0; - } - if (pdu->command == GET_REQ_MSG || pdu->command == GETNEXT_REQ_MSG - || pdu->command == SET_REQ_MSG || pdu->command == GETBULK_REQ_MSG ){ - /* set up to expect a response */ - rp = (struct request_list *)calloc(1, sizeof(struct request_list)); -#if 1 /***/ - if(! rp){ - fprintf(stderr, "Out of memory!\n"); - snmp_errno = SNMPERR_GENERR; - return 0; - } -#endif /***/ - rp->next_request = isp->requests; - isp->requests = rp; - rp->pdu = pdu; - rp->request_id = pdu->reqid; - - rp->retries = 1; - rp->timeout = session->timeout; - rp->time = tv; - tv.tv_usec += rp->timeout; - tv.tv_sec += tv.tv_usec / 1000000L; - tv.tv_usec %= 1000000L; - rp->expire = tv; -#if DEBUG_SNMPTRACE - snmp_print_trace(slp, rp, TRACE_SEND); -#endif - } - return pdu->reqid; -} - -/* - * Frees the pdu and any malloc'd data associated with it. - */ -void -snmp_free_pdu(struct snmp_pdu * pdu) -{ - struct variable_list *vp, *ovp; - - if (! pdu) - return; - - vp = pdu->variables; - while(vp){ - if (vp->name) { - free((char *)vp->name); - } - if (vp->val.string) { - free((char *)vp->val.string); - } - ovp = vp; - vp = vp->next_variable; - free((char *)ovp); - } - if (pdu->enterprise) { - free((char *)pdu->enterprise); - } - free((char *)pdu); -} - - -/* - * Checks to see if any of the fd's set in the fdset belong to - * snmp. Each socket with it's fd set has a packet read from it - * and snmp_parse is called on the packet received. The resulting pdu - * is passed to the callback routine for that session. If the callback - * routine returns successfully, the pdu and it's request are deleted. - */ -void -snmp_read(fdset) - fd_set *fdset; -{ - struct session_list *slp; - struct snmp_session *sp; - struct snmp_internal_session *isp; - u_char packet[PACKET_LENGTH]; - struct sockaddr_in from; - ssize_t length, fromlength; - struct snmp_pdu *pdu; - struct request_list *rp /**, *orp **/ ; - - for(slp = Sessions; slp; slp = slp->next){ - if (FD_ISSET(slp->internal->sd, fdset)){ - sp = slp->session; - isp = slp->internal; - fromlength = sizeof(from); - length = recvfrom(isp->sd, (char *)packet, PACKET_LENGTH, 0, (struct sockaddr *)&from, &fromlength); - if (length == -1) { - perror("recvfrom"); - return; - } -#if 1 /***/ - if (snmp_dump_packet){ - snmp_print_packet(packet, length, from, 0); - } - pdu = (struct snmp_pdu *)calloc(1, sizeof(struct snmp_pdu)); - - if(! pdu){ - fprintf(stderr, "Out of memory!\n"); - snmp_errno = SNMPERR_GENERR; - return; - } -#endif /***/ - - pdu->address = from; - pdu->reqid = 0; - pdu->variables = NULL; - pdu->enterprise = NULL; - pdu->enterprise_length = 0; - if (snmp_parse(sp, pdu, packet, length) < 0){ - fprintf(stderr, "Mangled packet\n"); - snmp_free_pdu(pdu); - return; - } - - if (pdu->command == GET_RSP_MSG || pdu->command == REPORT_MSG){ -#if 1 /***/ /* bug fix: illegal re-use of rp killed some requests */ - struct request_list *rp_next= 0; - for(rp = isp->requests; rp; rp = rp_next){ - rp_next = rp->next_request; - if (rp->request_id == pdu->reqid){ -#if DEBUG_SNMPTRACE - snmp_print_trace(slp, rp, TRACE_RECV); -#endif - if (sp->callback(RECEIVED_MESSAGE, sp, pdu->reqid, pdu, sp->callback_magic) == 1){ - /* successful, so delete request */ - free_one_request(isp, rp); - break; /* no more request with the same reqid */ - } - } - } -#endif /***/ - } else if (pdu->command == GET_REQ_MSG - || pdu->command == GETNEXT_REQ_MSG - || pdu->command == GETBULK_REQ_MSG - || pdu->command == TRP_REQ_MSG || pdu->command == SET_REQ_MSG){ -#if DEBUG_SNMPTRACE - snmp_print_trace(slp, NULL, TRACE_RECV); -#endif - sp->callback(RECEIVED_MESSAGE, sp, pdu->reqid, pdu, sp->callback_magic); - } - snmp_free_pdu(pdu); - } - } -} - -/* - * Returns info about what snmp requires from a select statement. - * numfds is the number of fds in the list that are significant. - * All file descriptors opened for SNMP are OR'd into the fdset. - * If activity occurs on any of these file descriptors, snmp_read - * should be called with that file descriptor set - * - * The timeout is the latest time that SNMP can wait for a timeout. The - * select should be done with the minimum time between timeout and any other - * timeouts necessary. This should be checked upon each invocation of select. - * If a timeout is received, snmp_timeout should be called to check if the - * timeout was for SNMP. (snmp_timeout is idempotent) - * - * Block is 1 if the select is requested to block indefinitely, rather - * than time out. If block is input as 1, the timeout value will be - * treated as undefined, but it must be available for setting in - * snmp_select_info. On return, if block is true, the value of - * timeout will be undefined. - * - * snmp_select_info returns the number of open sockets. (i.e. The - * number of sessions open) - */ -int -snmp_select_info(numfds, fdset, timeout, block) - int *numfds; - fd_set *fdset; - struct timeval *timeout; - int *block; /* should the select block until input arrives (i.e. no input) */ -{ - struct session_list *slp; - struct snmp_internal_session *isp; - struct request_list *rp; - struct timeval now, earliest; - int active = 0, requests = 0; - - timerclear(&earliest); - /* - * For each request outstanding, add it's socket to the fdset, - * and if it is the earliest timeout to expire, mark it as lowest. - */ - for(slp = Sessions; slp; slp = slp->next){ - active++; - isp = slp->internal; - if ((isp->sd + 1) > *numfds) - *numfds = (isp->sd + 1); - FD_SET(isp->sd, fdset); - if (isp->requests){ - /* found another session with outstanding requests */ - requests++; - for(rp = isp->requests; rp; rp = rp->next_request){ - if (!timerisset(&earliest) || timercmp(&rp->expire, &earliest, <)) - earliest = rp->expire; - } - } - } - if (requests == 0) /* if none are active, skip arithmetic */ - return active; - - /* - * Now find out how much time until the earliest timeout. This - * transforms earliest from an absolute time into a delta time, the - * time left until the select should timeout. - */ - gettimeofday(&now, (struct timezone *)0); - earliest.tv_sec--; /* adjust time to make arithmetic easier */ - earliest.tv_usec += 1000000L; - earliest.tv_sec -= now.tv_sec; - earliest.tv_usec -= now.tv_usec; - while (earliest.tv_usec >= 1000000L){ - earliest.tv_usec -= 1000000L; - earliest.tv_sec += 1; - } - if (earliest.tv_sec < 0){ - earliest.tv_sec = 0; - earliest.tv_usec = 0; - } - - /* if it was blocking before or our delta time is less, reset timeout */ - if (*block == 1 || timercmp(&earliest, timeout, <)){ - *timeout = earliest; - *block = 0; - } - return active; -} - -/* - * snmp_timeout should be called whenever the timeout from - * snmp_select_info expires, but it is idempotent, so snmp_timeout can - * be polled (probably a cpu expensive proposition). snmp_timeout - * checks to see if any of the sessions have an outstanding request - * that has timed out. If it finds one (or more), and that pdu has - * more retries available, a new packet is formed from the pdu and is - * resent. If there are no more retries available, the callback for - * the session is used to alert the user of the timeout. - */ -void -snmp_timeout() -{ - struct session_list *slp; - struct snmp_session *sp; - struct snmp_internal_session *isp; -#if 1 /***/ /* replacing freeme by simpler and safer rp_next*/ - struct request_list *rp, *rp_next = 0; -#endif /***/ - struct timeval now; - - gettimeofday(&now, (struct timezone *) 0); - /* - * For each request outstanding, check to see if it has expired. - */ - for (slp = Sessions; slp; slp = slp->next) { - sp = slp->session; - isp = slp->internal; -#if 1 /***/ /* simplification */ - for (rp = isp->requests; rp; rp = rp_next) { - rp_next = rp->next_request; - if (timercmp(&rp->expire, &now, <)) { - /* this timer has expired */ - if (rp->retries >= sp->retries) { -#if DEBUG_SNMPTRACE - snmp_print_trace(slp, rp, TRACE_TIMEOUT); -#endif - /* No more chances, delete this entry */ - sp->callback(TIMED_OUT, sp, rp->pdu->reqid, rp->pdu, sp->callback_magic); - free_one_request(isp, rp); - continue; -#endif/***/ mplification */by simpler and safer rp_next*/n s */ replace... - */ - * ÿ¯ùsnmplib/snmp_api.cc.hÿ°…<Ðlib/snmp_api.c~~ñÿ±<ðÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±«=ÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²=0ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²Š=Pÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ³ -=pÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³‚ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×Áÿ³ùÿ´=ø%D(ÿ´_=à\BØÿ´©=˜4BØÿ´ø=ÈHBØÿµB>ÿµ]ÿµmÿµzÿµ >(ÿµ·ÿµÉÿµÖÿµï>@ÿ¶ÿ¶ ÿ¶4ÿ¶Pÿ¶rÿ¶~ÿ¶ˆ0ÿ¶Ÿÿ¶·ÿ¶Ù‚àÿ·ÿ·#ÿ·/ÿ·>>Xÿ·V3/usr/people/wessels/.indent.proÿ¯èÿ¯ùÿ° ÿ°ÿ°.ÿ°?ÿ°Mÿ°[ÿ°pÿ°…ÿ°•ÿ°£ÿ°²ÿ°Åÿ°Ûÿ°ñÿ± -ÿ±ÿ±2ÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±™ÿ±«ÿ±ºÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²ÿ²ÿ²2ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²ÿ²Šÿ²™ÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ²öÿ³ -ÿ³ ÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³sÿ³‚ÿ³‘ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×ÿ³çÿ³ùÿ´ÿ´ÿ´ÿ´)ÿ´3ÿ´Cÿ´Oÿ´_ÿ´kÿ´tÿ´ÿ´ÿ´Ÿÿ´©ÿ´·ÿ´Åÿ´Òÿ´Ýÿ´íÿ´øÿµÿµÿµÿµ)ÿµ7ÿµBÿµMÿµ]ÿµmÿµzÿµ‰ÿµ ÿµ«ÿµ·ÿµÉÿµÖÿµâÿµïÿ¶ÿ¶ÿ¶ ÿ¶4ÿ¶?ÿ¶Pÿ¶bÿ¶rÿ¶~ÿ¶ˆÿ¶”ÿ¶Ÿÿ¶«ÿ¶·ÿ¶Éÿ¶Ùÿ¶íÿ·ÿ·ÿ·#ÿ·/ÿ·>ÿ·Lÿ·Vÿ·fÿ·q@ h) - struct snmp_session *session; - struct snmp_pdu *pdu; - u_char *data; - int length; -{ - u_char msg_type; - u_char type; - u_char *var_val; - long version; - int len, four; - u_char community[256]; - int community_length = 256; - struct variable_list *vp = 0; - oid objid[MAX_NAME_LEN], *op; - u_char *origdata = data; - int origlength = length; - int ret = 0; - u_char *save_data; - - /* authenticates message and returns length if valid */ - data = snmp_auth_parse(data, &length, community, &community_length, &version); - if (data == NULL) - return -1; - - if( version != SNMP_VERSION_1 && version != SNMP_VERSION_2C && version != SNMP_VERSION_2 ) { - fprintf(stderr, "Wrong version: %ld\n", version); - return -1; - } - - save_data = data; - - data = asn_parse_header(data, &length, &msg_type); - if (data == NULL) - return -1; - pdu->command = msg_type; - - if( session->authenticator ) { - ret = session->authenticator( origdata, origlength, save_data - community_length, - community_length, session, pdu ); - if( ret < 0 ) return ret; - } - - if (pdu->command != TRP_REQ_MSG){ - data = asn_parse_int(data, &length, &type, (long *)&pdu->reqid, sizeof(pdu->reqid)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->errstat, sizeof(pdu->errstat)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->errindex, sizeof(pdu->errindex)); - if (data == NULL) - return -1; - } else { - pdu->enterprise_length = MAX_NAME_LEN; - data = asn_parse_objid(data, &length, &type, objid, &pdu->enterprise_length); - if (data == NULL) - return -1; - pdu->enterprise = (oid *)calloc(1, pdu->enterprise_length * sizeof(oid)); - bcopy((char *)objid, (char *)pdu->enterprise, pdu->enterprise_length * sizeof(oid)); - - four = 4; - data = asn_parse_string(data, &length, &type, (u_char *)&pdu->agent_addr.sin_addr.s_addr, &four); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->trap_type, sizeof(pdu->trap_type)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->specific_type, sizeof(pdu->specific_type)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->time, sizeof(pdu->time)); - if (data == NULL) - return -1; - } - data = asn_parse_header(data, &length, &type); - if (data == NULL) - return -1; - if (type != (u_char)(ASN_SEQUENCE | ASN_CONSTRUCTOR)) - return -1; - while((int)length > 0){ - if (pdu->variables == NULL){ - pdu->variables = vp = (struct variable_list *)calloc(1, sizeof(struct variable_list)); - } else { - vp->next_variable = (struct variable_list *)calloc(1, sizeof(struct variable_list)); - vp = vp->next_variable; - } - vp->next_variable = NULL; - vp->val.string = NULL; - vp->name = NULL; - vp->name_length = MAX_NAME_LEN; - data = snmp_parse_var_op(data, objid, &vp->name_length, &vp->type, &vp->val_len, &var_val, (int *)&length); - if (data == NULL) - return -1; - op = (oid *)calloc(1, (unsigned)vp->name_length * sizeof(oid)); - bcopy((char *)objid, (char *)op, vp->name_length * sizeof(oid)); - vp->name = op; - - len = PACKET_LENGTH; - switch((short)vp->type){ - case ASN_INTEGER: - vp->val.integer = (long *)calloc(1, sizeof(long)); - vp->val_len = sizeof(long); - asn_parse_int(var_val, &len, &vp->type, (long *)vp->val.integer, sizeof(vp->val.integer)); - break; - case COUNTER: - case GAUGE: - case TIMETICKS: - case UINTEGER: - vp->val.integer = (long *)calloc(1, sizeof(unsigned long)); - vp->val_len = sizeof(unsigned long); - asn_parse_unsigned_int(var_val, &len, &vp->type, (unsigned long *)vp->val.integer, sizeof(vp->val.integer)); - break; - case COUNTER64: - vp->val.counter64 = (struct counter64 *)calloc(1, sizeof(struct counter64) ); - vp->val_len = sizeof(struct counter64); - asn_parse_unsigned_int64(var_val, &len, &vp->type, - (struct counter64 *)vp->val.counter64, - sizeof(*vp->val.counter64)); - break; - case ASN_OCTET_STR: - case IPADDRESS: - case OPAQUE: - case NSAP: - vp->val.string = (u_char *)calloc(1, (unsigned)vp->val_len); - asn_parse_string(var_val, &len, &vp->type, vp->val.string, &vp->val_len); - break; - case ASN_OBJECT_ID: - vp->val_len = MAX_NAME_LEN; - asn_parse_objid(var_val, &len, &vp->type, objid, &vp->val_len); - vp->val_len *= sizeof(oid); - vp->val.objid = (oid *)calloc(1, (unsigned)vp->val_len); - bcopy((char *)objid, (char *)vp->val.objid, vp->val_len); - break; - case SNMP_NOSUCHOBJECT: - case SNMP_NOSUCHINSTANCE: - case SNMP_ENDOFMIBVIEW: - case ASN_NULL: - break; - default: - fprintf(stderr, "bad type returned (%x)\n", vp->type); - break; - } - } - return ret; -} - -/* - * Sends the input pdu on the session after calling snmp_build to create - * a serialized packet. If necessary, set some of the pdu data from the - * session defaults. Add a request corresponding to this pdu to the list - * of outstanding requests on this session, then send the pdu. - * Returns the request id of the generated packet if applicable, otherwise 1. - * On any error, 0 is returned. - * The pdu is freed by snmp_send() unless a failure occured. - */ -int -snmp_send(session, pdu) - struct snmp_session *session; - struct snmp_pdu *pdu; -{ - struct session_list *slp; - struct snmp_internal_session *isp = NULL; - u_char packet[PACKET_LENGTH]; - int length = PACKET_LENGTH; - struct request_list *rp; - struct timeval tv; - - for(slp = Sessions; slp; slp = slp->next){ - if (slp->session == session){ - isp = slp->internal; - break; - } - } - - if (! pdu) { - snmp_errno = SNMPERR_GENERR; - return 0; - } - - if (isp == NULL){ - snmp_errno = SNMPERR_BAD_SESSION; - return 0; - } - if (pdu->command == GET_REQ_MSG || pdu->command == GETNEXT_REQ_MSG - || pdu->command == GET_RSP_MSG || pdu->command == SET_REQ_MSG - || pdu->command == GETBULK_REQ_MSG ){ - if (pdu->reqid == SNMP_DEFAULT_REQID) - pdu->reqid = ++Reqid; - if (pdu->errstat == SNMP_DEFAULT_ERRSTAT) - pdu->errstat = 0; - if (pdu->errindex == SNMP_DEFAULT_ERRINDEX) - pdu->errindex = 0; - } else { - /* fill in trap defaults */ - pdu->reqid = 1; /* give a bogus non-error reqid for traps */ - if (pdu->enterprise_length == SNMP_DEFAULT_ENTERPRISE_LENGTH){ - pdu->enterprise = (oid *)calloc(1, sizeof(DEFAULT_ENTERPRISE)); - bcopy((char *)DEFAULT_ENTERPRISE, (char *)pdu->enterprise, sizeof(DEFAULT_ENTERPRISE)); - pdu->enterprise_length = sizeof(DEFAULT_ENTERPRISE)/sizeof(oid); - } - if (pdu->time == SNMP_DEFAULT_TIME) - pdu->time = DEFAULT_TIME; - } - if (pdu->address.sin_addr.s_addr == SNMP_DEFAULT_ADDRESS){ - if (isp->addr.sin_addr.s_addr != SNMP_DEFAULT_ADDRESS){ - bcopy((char *)&isp->addr, (char *)&pdu->address, sizeof(pdu->address)); - } else { - fprintf(stderr, "No remote IP address specified\n"); - snmp_errno = SNMPERR_BAD_ADDRESS; - return 0; - } - } - - - if (snmp_build(session, pdu, packet, &length, 0) < 0){ - fprintf(stderr, "Error building packet\n"); - snmp_errno = SNMPERR_GENERR; - return 0; - } -#if 1 /***/ - if (snmp_dump_packet){ - snmp_print_packet(packet, length, pdu->address, 1); - } -#endif /***/ - - gettimeofday(&tv, (struct timezone *)0); - if (sendto(isp->sd, (char *)packet, length, 0, (struct sockaddr *)&pdu->address, sizeof(pdu->address)) < 0){ - perror("sendto"); - snmp_errno = SNMPERR_GENERR; - return 0; - } - if (pdu->command == GET_REQ_MSG || pdu->command == GETNEXT_REQ_MSG - || pdu->command == SET_REQ_MSG || pdu->command == GETBULK_REQ_MSG ){ - /* set up to expect a response */ - rp = (struct request_list *)calloc(1, sizeof(struct request_list)); -#if 1 /***/ - if(! rp){ - fprintf(stderr, "Out of memory!\n"); - snmp_errno = SNMPERR_GENERR; - return 0; - } -#endif /***/ - rp->next_request = isp->requests; - isp->requests = rp; - rp->pdu = pdu; - rp->request_id = pdu->reqid; - - rp->retries = 1; - rp->timeout = session->timeout; - rp->time = tv; - tv.tv_usec += rp->timeout; - tv.tv_sec += tv.tv_usec / 1000000L; - tv.tv_usec %= 1000000L; - rp->expire = tv; -#if DEBUG_SNMPTRACE - snmp_print_trace(slp, rp, TRACE_SEND); -#endif - } - return pdu->reqid; -} - -/* - * Frees the pdu and any malloc'd data associated with it. - */ -void -snmp_free_pdu(struct snmp_pdu * pdu) -{ - struct variable_list *vp, *ovp; - - if (! pdu) - return; - - vp = pdu->variables; - while(vp){ - if (vp->name) { - free((char *)vp->name); - } - if (vp->val.string) { - free((char *)vp->val.string); - } - ovp = vp; - vp = vp->next_variable; - free((char *)ovp); - } - if (pdu->enterprise) { - free((char *)pdu->enterprise); - } - free((char *)pdu); -} - - -/* - * Checks to see if any of the fd's set in the fdset belong to - * snmp. Each socket with it's fd set has a packet read from it - * and snmp_parse is called on the packet received. The resulting pdu - * is passed to the callback routine for that session. If the callback - * routine returns successfully, the pdu and it's request are deleted. - */ -void -snmp_read(fdset) - fd_set *fdset; -{ - struct session_list *slp; - struct snmp_session *sp; - struct snmp_internal_session *isp; - u_char packet[PACKET_LENGTH]; - struct sockaddr_in from; - ssize_t length, fromlength; - struct snmp_pdu *pdu; - struct request_list *rp /**, *orp **/ ; - - for(slp = Sessions; slp; slp = slp->next){ - if (FD_ISSET(slp->internal->sd, fdset)){ - sp = slp->session; - isp = slp->internal; - fromlength = sizeof(from); - length = recvfrom(isp->sd, (char *)packet, PACKET_LENGTH, 0, (struct sockaddr *)&from, &fromlength); - if (length == -1) { - perror("recvfrom"); - return; - } -#if 1 /***/ - if (snmp_dump_packet){ - snmp_print_packet(packet, length, from, 0); - } - pdu = (struct snmp_pdu *)calloc(1, sizeof(struct snmp_pdu)); - - if(! pdu){ - fprintf(stderr, "Out of memory!\n"); - snmp_errno = SNMPERR_GENERR; - return; - } -#endif /***/ - - pdu->address = from; - pdu->reqid = 0; - pdu->variables = NULL; - pdu->enterprise = NULL; - pdu->enterprise_length = 0; - if (snmp_parse(sp, pdu, packet, length) < 0){ - fprintf(stderr, "Mangled packet\n"); - snmp_free_pdu(pdu); - return; - } - - if (pdu->command == GET_RSP_MSG || pdu->command == REPORT_MSG){ -#if 1 /***/ /* bug fix: illegal re-use of rp killed some requests */ - struct request_list *rp_next= 0; - for(rp = isp->requests; rp; rp = rp_next){ - rp_next = rp->next_request; - if (rp->request_id == pdu->reqid){ -#if DEBUG_SNMPTRACE - snmp_print_trace(slp, rp, TRACE_RECV); -#endif - if (sp->callback(RECEIVED_MESSAGE, sp, pdu->reqid, pdu, sp->callback_magic) == 1){ - /* successful, so delete request */ - free_one_request(isp, rp); - break; /* no more request with the same reqid */ - } - } - } -#endif /***/ - } else if (pdu->command == GET_REQ_MSG - || pdu->command == GETNEXT_REQ_MSG - || pdu->command == GETBULK_REQ_MSG - || pdu->command == TRP_REQ_MSG || pdu->command == SET_REQ_MSG){ -#if DEBUG_SNMPTRACE - snmp_print_trace(slp, NULL, TRACE_RECV); -#endif - sp->callback(RECEIVED_MESSAGE, sp, pdu->reqid, pdu, sp->callback_magic); - } - snmp_free_pdu(pdu); - } - } -} - -/* - * Returns info about what snmp requires from a select statement. - * numfds is the number of fds in the list that are significant. - * All file descriptors opened for SNMP are OR'd into the fdset. - * If activity occurs on any of these file descriptors, snmp_read - * should be called with that file descriptor set - * - * The timeout is the latest time that SNMP can wait for a timeout. The - * select should be done with the minimum time between timeout and any other - * timeouts necessary. This should be checked upon each invocation of select. - * If a timeout is received, snmp_timeout should be called to check if the - * timeout was for SNMP. (snmp_timeout is idempotent) - * - * Block is 1 if the select is requested to block indefinitely, rather - * than time out. If block is input as 1, the timeout value will be - * treated as undefined, but it must be available for setting in - * snmp_select_info. On return, if block is true, the value of - * timeout will be undefined. - * - * snmp_select_info returns the number of open sockets. (i.e. The - * number of sessions open) - */ -int -snmp_select_info(numfds, fdset, timeout, block) - int *numfds; - fd_set *fdset; - struct timeval *timeout; - int *block; /* should the select block until input arrives (i.e. no input) */ -{ - struct session_list *slp; - struct snmp_internal_session *isp; - struct request_list *rp; - struct timeval now, earliest; - int active = 0, requests = 0; - - timerclear(&earliest); - /* - * For each request outstanding, add it's socket to the fdset, - * and if it is the earliest timeout to expire, mark it as lowest. - */ - for(slp = Sessions; slp; slp = slp->next){ - active++; - isp = slp->internal; - if ((isp->sd + 1) > *numfds) - *numfds = (isp->sd + 1); - FD_SET(isp->sd, fdset); - if (isp->requests){ - /* found another session with outstanding requests */ - requests++; - for(rp = isp->requests; rp; rp = rp->next_request){ - if (!timerisset(&earliest) || timercmp(&rp->expire, &earliest, <)) - earliest = rp->expire; - } - } - } - if (requests == 0) /* if none are active, skip arithmetic */ - return active; - - /* - * Now find out how much time until the earliest timeout. This - * transforms earliest from an absolute time into a delta time, the - * time left until the select should timeout. - */ - gettimeofday(&now, (struct timezone *)0); - earliest.tv_sec--; /* adjust time to make arithmetic easier */ - earliest.tv_usec += 1000000L; - earliest.tv_sec -= now.tv_sec; - earliest.tv_usec -= now.tv_usec; - while (earliest.tv_usec >= 1000000L){ - earliest.tv_usec -= 1000000L; - earliest.tv_sec += 1; - } - if (earliest.tv_sec < 0){ - earliest.tv_sec = 0; - earliest.tv_usec = 0; - } - - /* if it was blocking before or our delta time is less, reset timeout */ - if (*block == 1 || timercmp(&earliest, timeout, <)){ - *timeout = earliest; - *block = 0; - } - return active; -} - -/* - * snmp_timeout should be called whenever the timeout from - * snmp_select_info expires, but it is idempotent, so snmp_timeout can - * be polled (probably a cpu expensive proposition). snmp_timeout - * checks to see if any of the sessions have an outstanding request - * that has timed out. If it finds one (or more), and that pdu has - * more retries available, a new packet is formed from the pdu and is - * resent. If there are no more retries available, the callback for - * the session is used to alert the user of the timeout. - */ -void -snmp_timeout() -{ - struct session_list *slp; - struct snmp_session *sp; - struct snmp_internal_session *isp; -#if 1 /***/ /* replacing freeme by simpler and safer rp_next*/ - struct request_list *rp, *rp_next = 0; -#endif /***/ - struct timeval now; - - gettimeofday(&now, (struct timezone *) 0); - /* - * For each request outstanding, check to see if it has expired. - */ - for (slp = Sessions; slp; slp = slp->next) { - sp = slp->session; - isp = slp->internal; -#if 1 /***/ /* simplification */ - for (rp = isp->requests; rp; rp = rp_next) { - rp_next = rp->next_request; - if (timercmp(&rp->expire, &now, <)) { - /* this timer has expired */ - if (rp->retries >= sp->retries) { -#if DEBUG_SNMPTRACE - snmp_print_trace(slp, rp, TRACE_TIMEOUT); -#endif - /* No more chances, delete this entry */ - sp->callback(TIMED_OUT, sp, rp->pdu->reqid, rp->pdu, sp->callback_magic); - free_one_request(isp, rp); - continue; -r *)buf, (char *)cp, totallength); - totallength += cp - packet; - *out_length = totallength; - - if( session->qoS & USEC_QOS_AUTH ) - md5Digest( packet, totallength, cp - (session->contextLen + 16), - cp - (session->contextLen + 16) ); - - return 0; -} - -/* - * Parses the packet received on the input session, and places the data into - * the input pdu. length is the length of the input packet. If any errors - * are encountered, -1 is returned. Otherwise, a 0 is returned. - */ -static int -snmp_parse(session, pdu, data, lengtBÐ+= m -È /* >X*/ B3NMPTèè */cfor testing purposes */e key! replace... - */ - * ÿ¯ùsnmplib/snmp_api.cc.hÿ°…<Ðlib/snmp_api.c~~ñÿ±<ðÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±«=ÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²=0ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²Š=Pÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ³ -=pÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³‚ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×Áÿ³ùÿ´=ø%D(ÿ´_=à\BØÿ´©=˜4BØÿ´ø=ÈHBØÿµB>ÿµ]ÿµmÿµzÿµ >(ÿµ·ÿµÉÿµÖÿµï>@ÿ¶ÿ¶ ÿ¶4ÿ¶Pÿ¶rÿ¶~ÿ¶ˆ0ÿ¶Ÿ4¨ÿ¶·ÿ¶Ù‰èÿ·ÿ·#ÿ·/ÿ·>>Xÿ·V3/usr/people/wessels/.indent.proÿ¯èÿ¯ùÿ° ÿ°ÿ°.ÿ°?ÿ°Mÿ°[ÿ°pÿ°…ÿ°•ÿ°£ÿ°²ÿ°Åÿ°Ûÿ°ñÿ± -ÿ±ÿ±2ÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±™ÿ±«ÿ±ºÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²ÿ²ÿ²2ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²ÿ²Šÿ²™ÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ²öÿ³ -ÿ³ ÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³sÿ³‚ÿ³‘ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×ÿ³çÿ³ùÿ´ÿ´ÿ´ÿ´)ÿ´3ÿ´Cÿ´Oÿ´_ÿ´kÿ´tÿ´ÿ´ÿ´Ÿÿ´©ÿ´·ÿ´Åÿ´Òÿ´Ýÿ´íÿ´øÿµÿµÿµÿµ)ÿµ7ÿµBÿµMÿµ]ÿµmÿµzÿµ‰ÿµ ÿµ«ÿµ·ÿµÉÿµÖÿµâÿµïÿ¶ÿ¶ÿ¶ ÿ¶4ÿ¶?ÿ¶Pÿ¶bÿ¶rÿ¶~ÿ¶ˆÿ¶”ÿ¶Ÿÿ¶«ÿ¶·ÿ¶Éÿ¶Ùÿ¶íÿ·ÿ·ÿ·#ÿ·/ÿ·>ÿ·Lÿ·Vÿ·fÿ·q°>X 4¨ $  @,2ˆ…>X‚àC Ž0   ¸ude/snmp_groupvars.h~ àude/snmp_groupvars.h ŽX Ž€ Ž¨ ŽÐ „©/*********************************************************** - Copyright 1989 by Carnegie Mellon University - - All Rights Reserved - -Permission to use, copy, modify, and distribute this software and its -documentation for any purpose and without fee is hereby granted, -provided that the above copyright notice appear in all copies and that -both that copyright notice and this permission notice appear in -supporting documentation, and that the name of CMU not be -used in advertising or publicity pertaining to distribution of the -software without specific, written prior permission. - -CMU DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING -ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL -CMU BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR -ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, -WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, -ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS -SOFTWARE. -******************************************************************/ -/* - * snmp_api.c - API for access to snmp. - */ -#define DEBUG_SNMPTRACE 0 /* set to 1 to print all SNMP actions */ -#define DEBUG_SNMPFULLDUMP 0 /* set to 1 to dump all SNMP packets */ - -#include -#include -#include -#include -#include -#include -#include -#ifdef linux -#include -#include -#include -#include -#endif - - -#include "asn1.h" -#include "snmp.h" -#include "snmp_impl.h" -#include "snmp_api.h" -#include "snmp_client.h" - -#define PACKET_LENGTH 4500 - -#ifndef BSD4_3 -#define BSD4_2 -#endif - -#if !defined(BSD4_3) && !defined(linux) && !defined(sun) - -typedef long fd_mask; -#define NFDBITS (sizeof(fd_mask) * NBBY) /* bits per mask */ - -#define FD_SET(n, p) ((p)->fds_bits[(n)/NFDBITS] |= (1 << ((n) % NFDBITS))) -#define FD_CLR(n, p) ((p)->fds_bits[(n)/NFDBITS] &= ~(1 << ((n) % NFDBITS))) -#define FD_ISSET(n, p) ((p)->fds_bits[(n)/NFDBITS] & (1 << ((n) % NFDBITS))) -#define FD_ZERO(p) bzero((char *)(p), sizeof(*(p))) -#endif - -oid default_enterprise[] = {1, 3, 6, 1, 4, 1, 3, 1, 1}; /* enterprises.cmu.systems.cmuSNMP */ - -#define DEFAULT_COMMUNITY "public" -#define DEFAULT_REMPORT SNMP_PORT -#define DEFAULT_ENTERPRISE default_enterprise -#define DEFAULT_TIME 0 -#define DEFAULT_MMS 1389 /* large, randomly picked for testing purposes */ - -/* - * Internal information about the state of the snmp session. - */ -struct snmp_internal_session { - int sd; /* socket descriptor for this connection */ - ipaddr addr; /* address of connected peer */ - struct request_list *requests;/* Info about outstanding requests */ -}; - -/* - * A list of all the outstanding requests for a particular session. - */ -struct request_list { - struct request_list *next_request; - u_long request_id; /* request id */ - int retries; /* Number of retries */ - u_long timeout; /* length to wait for timeout */ - struct timeval time; /* Time this request was made */ - struct timeval expire; /* time this request is due to expire */ - struct snmp_pdu *pdu; /* The pdu for this request (saved so it can be retransmitted */ -}; - -/* - * The list of active/open sessions. - */ -struct session_list { - struct session_list *next; - struct snmp_session *session; - struct snmp_internal_session *internal; -}; - -struct session_list *Sessions = NULL; - -u_long Reqid = 0; -int snmp_errno = 0; - -char *api_errors[4] = { - "Unknown session", - "Unknown host", - "Invalid local port", - "Unknown Error" -}; - - -void sync_with_agent(); -int parse_app_community_string(); -void snmp_synch_setup(); -int snmp_synch_response(); -void md5Digest(); - - -static char * -api_errstring(snmp_errnumber) - int snmp_errnumber; -{ - if (snmp_errnumber <= SNMPERR_BAD_SESSION && snmp_errnumber >= SNMPERR_GENERR){ - return api_errors[snmp_errnumber + 4]; - } else { - return "Unknown Error"; - } -} - -#if 0 -/* - * Gets initial request ID for all transactions. - */ -static void -init_snmp(){ - struct timeval tv; - - gettimeofday(&tv, (struct timezone *)0); - srandom(tv.tv_sec ^ tv.tv_usec); - Reqid = random(); -} -#endif - - -/* - * Dump snmp packet to stdout: - */ -static void -snmp_print_packet(packet, length, addr, code) - char *packet; - int length; - ipaddr addr; - int code; -{ - if(length < 0) { - return; - } - if (code <= 0) { /* received */ - printf("\nReceived %4d bytes from ", length); - } - else { /* sending */ - printf("\nSending %4d bytes to ", length); - } - printf("%s:", inet_ntoa(addr.sin_addr)); -#if DEBUG_SNMPFULLDUMP - for (count = 0; count < length; count++) { - if ((count & 15) == 0) { - printf("\n "); - } - printf("%02X ", (int)(packet[count]&255)); - } -#endif - fflush(stdout); -} - -#if DEBUG_SNMPTRACE -/* - * Print request - */ -#define TRACE_SEND (0) -#define TRACE_RECV (1) -#define TRACE_TIMEOUT (2) -static void -snmp_print_trace(slp, rp, code) - struct session_list *slp; - struct request_list *rp; - int code; -{ - int reqid=0, retries=1; - if( rp ){ - reqid = rp->request_id; - retries = rp->retries; - } - printf("\n Session %2d ReqId %4d ", slp->internal->sd, reqid); - switch(code) - { - case TRACE_SEND: printf("send pdu (%d)", retries);break; - case TRACE_RECV: printf("recv pdu");break; - case TRACE_TIMEOUT: printf("time out");break; - } - fflush(stdout); -} -#endif /* DEBUG_SNMPTRACE */ - - - - -/* - * Sets up the session with the snmp_session information provided - * by the user. Then opens and binds the necessary UDP port. - * A handle to the created session is returned (this is different than - * the pointer passed to snmp_open()). On any error, NULL is returned - * and snmp_errno is set to the appropriate error code. - */ -struct snmp_session * -snmp_open(session) - struct snmp_session *session; -{ - struct session_list *slp; - struct snmp_internal_session *isp; - u_char *cp; - int sd; - u_long addr; - struct sockaddr_in me; - struct hostent *hp; - struct servent *servp; - extern int check_received_pkt(); - - /* Copy session structure and link into list */ - slp = (struct session_list *)calloc(1, sizeof(struct session_list)); - slp->internal = isp = (struct snmp_internal_session *)calloc(1, sizeof(struct snmp_internal_session)); - bzero((char *)isp, sizeof(struct snmp_internal_session)); - slp->internal->sd = -1; /* mark it not set */ - slp->session = (struct snmp_session *)calloc(1, sizeof(struct snmp_session)); - bcopy((char *)session, (char *)slp->session, sizeof(struct snmp_session)); - session = slp->session; - /* now link it in. */ - slp->next = Sessions; - Sessions = slp; - - /* - * session now points to the new structure that still contains pointers to - * data allocated elsewhere. Some of this data is copied to space malloc'd - * here, and the pointer replaced with the new one. - */ - - if (session->peername != NULL){ - cp = (u_char *)calloc(1, (unsigned)strlen(session->peername) + 1); - strcpy((char *)cp, session->peername); - session->peername = (char *)cp; - } - - if (session->retries == SNMP_DEFAULT_RETRIES) - session->retries = SNMP_API_DEFAULT_RETRIES; - if (session->timeout == SNMP_DEFAULT_TIMEOUT) - session->timeout = SNMP_API_DEFAULT_TIMEOUT; - if (session->MMS == 0 ) - session->MMS = DEFAULT_MMS; - isp->requests = NULL; - - - /* Fill in defaults if necessary */ - if (session->community_len != SNMP_DEFAULT_COMMUNITY_LEN){ - if( *session->community == '+' ) { - session->community_len--; - cp = (u_char *) calloc(1, (unsigned) session->community_len); - bcopy((char *) session->community+1, (char *)cp, - session->community_len); - session->version = SNMP_VERSION_2C; - } else { - cp = (u_char *) calloc(1, (unsigned) session->community_len); - bcopy((char *) session->community, (char *) cp, - session->community_len); - } - - } else { - session->community_len = strlen(DEFAULT_COMMUNITY); - cp = (u_char *)calloc(1, (unsigned)session->community_len); - bcopy((char *)DEFAULT_COMMUNITY, (char *)cp, session->community_len); - } - - /* Set up connections */ - sd = socket(AF_INET, SOCK_DGRAM, 0); - if (sd < 0){ - perror("socket"); - snmp_errno = SNMPERR_GENERR; - if (!snmp_close(session)){ - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", api_errstring(snmp_errno)); - exit(1); - } - return 0; - } - isp->sd = sd; - - if (session->peername != SNMP_DEFAULT_PEERNAME){ - if ((addr = inet_addr(session->peername)) != -1){ - bcopy((char *)&addr, (char *)&isp->addr.sin_addr, sizeof(isp->addr.sin_addr)); - } else { - hp = gethostbyname(session->peername); - if (hp == NULL){ - fprintf(stderr, "unknown host: %s\n", session->peername); - snmp_errno = SNMPERR_BAD_ADDRESS; - if (!snmp_close(session)){ - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", api_errstring(snmp_errno)); - exit(2); - } - return 0; - } else { - bcopy((char *)hp->h_addr, (char *)&isp->addr.sin_addr, hp->h_length); - } - } - isp->addr.sin_family = AF_INET; - if (session->remote_port == SNMP_DEFAULT_REMPORT){ - /*servp = getservbyname("snmp", "udp");*/ - servp=NULL; - if (servp != NULL){ - isp->addr.sin_port = servp->s_port; - } else { - isp->addr.sin_port = htons(SNMP_PORT); - } - } else { - isp->addr.sin_port = htons(session->remote_port); - } - } else { - isp->addr.sin_addr.s_addr = SNMP_DEFAULT_ADDRESS; - } - - me.sin_family = AF_INET; - me.sin_addr.s_addr = INADDR_ANY; - me.sin_port = htons(session->local_port); - if (bind(sd, (struct sockaddr *)&me, sizeof(me)) != 0){ - perror("bind"); - snmp_errno = SNMPERR_BAD_LOCPORT; - if (! snmp_close(session)){ - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", - api_errstring(snmp_errno)); - exit(3); - } - return 0; - } - - if( *cp == '/' ) { - session->authenticator = check_received_pkt; - sync_with_agent(session); - parse_app_community_string( session ); - session->qoS |= USEC_QOS_GENREPORT; - } - - /* replace comm pointer with pointer to new data: */ - session->community = cp; - - return session; -} - -void -sync_with_agent( session ) -struct snmp_session *session; -{ - struct snmp_pdu *pdu, *response = 0; - int status; - - session->qoS = USEC_QOS_GENREPORT; - session->userLen = 6; - session->version = SNMP_VERSION_2; - strcpy( session->userName, "public" ); - - snmp_synch_setup(session); - pdu = snmp_pdu_create(GET_REQ_MSG); - status = snmp_synch_response(session, pdu, &response); - - if (status == STAT_SUCCESS){ - memcpy( session->agentID, response->params.agentID, 12 ); - - /* save the clocks -- even though they are not authentic */ - session->agentBoots = response->params.agentBoots; - session->agentTime = response->params.agentTime; - session->agentClock = response->params.agentTime - time(NULL); - - } else { - if (status == STAT_TIMEOUT){ - printf("No Response from %s\n", session->peername); - } else { /* status == STAT_ERROR */ - printf("An error occurred, Quitting\n"); - } - exit( -1 ); - } - - /** freed to early: - snmp_free_pdu(pdu); - if (response) snmp_free_pdu(response); - **/ -} -#if 1 /***/ -/* - * Unlink one element from input request list, - * then free it and it's pdu. - */ -static void -free_one_request(isp, orp) - struct snmp_internal_session *isp; - struct request_list *orp; -{ - struct request_list *rp; - if(! orp) return; - if(isp->requests == orp){ - isp->requests = orp->next_request; /* unlink head */ - } - else{ - for(rp = isp->requests; rp; rp = rp->next_request){ - if(rp->next_request == orp){ - rp->next_request = orp->next_request; /* unlink element */ - break; - } - } - } - if (orp->pdu != NULL){ - snmp_free_pdu(orp->pdu); - } - free((char *)orp); -} -#endif /***/ -/* - * Free each element in the input request list. - */ -static void -free_request_list(rp) - struct request_list *rp; -{ - struct request_list *orp; - - while(rp){ - orp = rp; - rp = rp->next_request; - if (orp->pdu != NULL) - snmp_free_pdu(orp->pdu); - free((char *)orp); - } -} - -/* - * Close the input session. Frees all data allocated for the session, - * dequeues any pending requests, and closes any sockets allocated for - * the session. Returns 0 on error, 1 otherwise. - */ -int -snmp_close(session) - struct snmp_session *session; -{ - struct session_list *slp = NULL, *oslp = NULL; - - if (Sessions->session == session){ /* If first entry */ - slp = Sessions; - Sessions = slp->next; - } else { - for(slp = Sessions; slp; slp = slp->next){ - if (slp->session == session){ - if (oslp) /* if we found entry that points here */ - oslp->next = slp->next; /* link around this entry */ - break; - } - oslp = slp; - } - } - /* If we found the session, free all data associated with it */ - if (slp){ - if (slp->session->community != NULL) - free((char *)slp->session->community); - if(slp->session->peername != NULL) - free((char *)slp->session->peername); - free((char *)slp->session); - if (slp->internal->sd != -1) - close(slp->internal->sd); - free_request_list(slp->internal->requests); - free((char *)slp->internal); - free((char *)slp); - } else { - snmp_errno = SNMPERR_BAD_SESSION; - return 0; - } - return 1; -} - -/* - * Takes a session and a pdu and serializes the ASN PDU into the area - * pointed to by packet. out_length is the size of the data area available. - * Returns the length of the completed packet in out_length. If any errors - * occur, -1 is returned. If all goes well, 0 is returned. - */ -int -snmp_build(session, pdu, packet, out_length, is_agent) - struct snmp_session *session; - struct snmp_pdu *pdu; - u_char *packet; - int *out_length; - int is_agent; -{ - u_char buf[PACKET_LENGTH]; - u_char *cp; - struct variable_list *vp; - int length; - int totallength; - - length = *out_length; - cp = packet; - for(vp = pdu->variables; vp; vp = vp->next_variable){ - cp = snmp_build_var_op(cp, vp->name, &vp->name_length, vp->type, vp->val_len, (u_char *)vp->val.string, &length); - if (cp == NULL) - return -1; - } - totallength = cp - packet; - - length = PACKET_LENGTH; - cp = asn_build_header(buf, &length, (u_char)(ASN_SEQUENCE | ASN_CONSTRUCTOR), totallength); - if (cp == NULL) - return -1; - bcopy((char *)packet, (char *)cp, totallength); - totallength += cp - buf; - - length = *out_length; - if (pdu->command != TRP_REQ_MSG){ - /* request id */ - cp = asn_build_int(packet, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->reqid, sizeof(pdu->reqid)); - if (cp == NULL) - return -1; - /* error status */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->errstat, sizeof(pdu->errstat)); - if (cp == NULL) - return -1; - /* error index */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->errindex, sizeof(pdu->errindex)); - if (cp == NULL) - return -1; - } else { /* this is a trap message */ - /* enterprise */ - cp = asn_build_objid(packet, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_OBJECT_ID), - (oid *)pdu->enterprise, pdu->enterprise_length); - if (cp == NULL) - return -1; - /* agent-addr */ - cp = asn_build_string(cp, &length, (u_char)IPADDRESS, - (u_char *)&pdu->agent_addr.sin_addr.s_addr, sizeof(pdu->agent_addr.sin_addr.s_addr)); - if (cp == NULL) - return -1; - /* generic trap */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->trap_type, sizeof(pdu->trap_type)); - if (cp == NULL) - return -1; - /* specific trap */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->specific_type, sizeof(pdu->specific_type)); - if (cp == NULL) - return -1; - /* timestamp */ - cp = asn_build_int(cp, &length, (u_char)TIMETICKS, - (long *)&pdu->time, sizeof(pdu->time)); - if (cp == NULL) - return -1; - } - if (length < totallength) - return -1; - bcopy((char *)buf, (char *)cp, totallength); - totallength += cp - packet; - - length = PACKET_LENGTH; - cp = asn_build_header(buf, &length, (u_char)pdu->command, totallength); - if (cp == NULL) - return -1; - if (length < totallength) - return -1; - bcopy((char *)packet, (char *)cp, totallength); - totallength += cp - buf; - - length = *out_length; - - cp = snmp_auth_build( packet, &length, session, is_agent, totallength ); - if (cp == NULL) - return -1; - if ((*out_length - (cp - packet)) < totallength) - return -1; - bcopy((char *)buf, (char *)cp, totallength); - totallength += cp - packet; - *out_length = totallength; - - if( session->qoS & USEC_QOS_AUTH ) - md5Digest( packet, totallength, cp - (session->contextLen + 16), - cp - (session->contextLen + 16) ); - - return 0; -} - -/* - * Parses the packet received on the input session, and places the data into - * the input pdu. length is the length of the input packet. If any errors - * are encountered, -1 is returned. Otherwise, a 0 is returned. - */ -static int -snmp_parse(session, pdu, data, length) - struct snmp_session *session; - struct snmp_pdu *pdu; - u_char *data; - int length; -{ - u_char msg_type; - u_char type; - u_char *var_val; - long version; - int len, four; - u_char community[256]; - int community_length = 256; - struct variable_list *vp = 0; - oid objid[MAX_NAME_LEN], *op; - u_char *origdata = data; - int origlength = length; - int ret = 0; - u_char *save_data; - - /* authenticates message and returns length if valid */ - data = snmp_auth_parse(data, &length, community, &community_length, &version); - if (data == NULL) - return -1; - - if( version != SNMP_VERSION_1 && version != SNMP_VERSION_2C && version != SNMP_VERSION_2 ) { - fprintf(stderr, "Wrong version: %ld\n", version); - return -1; - } - - save_data = data; - - data = asn_parse_header(data, &length, &msg_type); - if (data == NULL) - return -1; - pdu->command = msg_type; - - if( session->authenticator ) { - ret = session->authenticator( origdata, origlength, save_data - community_length, - community_length, session, pdu ); - if( ret < 0 ) return ret; - } - - if (pdu->command != TRP_REQ_MSG){ - data = asn_parse_int(data, &length, &type, (long *)&pdu->reqid, sizeof(pdu->reqid)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->errstat, sizeof(pdu->errstat)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->errindex, sizeof(pdu->errindex)); - if (data == NULL) - return -1; - } else { - pdu->enterprise_length = MAX_NAME_LEN; - data = asn_parse_objid(data, &length, &type, objid, &pdu->enterprise_length); - if (data == NULL) - return -1; - pdu->enterprise = (oid *)calloc(1, pdu->enterprise_length * sizeof(oid)); - bcopy((char *)objid, (char *)pdu->enterprise, pdu->enterprise_length * sizeof(oid)); - - four = 4; - data = asn_parse_string(data, &length, &type, (u_char *)&pdu->agent_addr.sin_addr.s_addr, &four); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->trap_type, sizeof(pdu->trap_type)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->specific_type, sizeof(pdu->specific_type)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->time, sizeof(pdu->time)); - if (data == NULL) - return -1; - } - data = asn_parse_header(data, &length, &type); - if (data == NULL) - return -1; - if (type != (u_char)(ASN_SEQUENCE | ASN_CONSTRUCTOR)) - return -1; - while((int)length > 0){ - if (pdu->variables == NULL){ - pdu->variables = vp = (struct variable_list *)calloc(1, sizeof(struct variable_list)); - } else { - vp->next_variable = (struct variable_list *)calloc(1, sizeof(struct variable_list)); - vp = vp->next_variable; - } - vp->next_variable = NULL; - vp->val.string = NULL; - vp->name = NULL; - vp->name_length = MAX_NAME_LEN; - data = snmp_parse_var_op(data, objid, &vp->name_length, &vp->type, &vp->val_len, &var_val, (int *)&length); - if (data == NULL) - return -1; - op = (oid *)calloc(1, (unsigned)vp->name_length * sizeof(oid)); - bcopy((char *)objid, (char *)op, vp->name_length * sizeof(oid)); - vp->name = op; - - len = PACKET_LENGTH; - switch((short)vp->type){ - case ASN_INTEGER: - vp->val.integer = (long *)calloc(1, sizeof(long)); - vp->val_len = sizeof(long); - asn_parse_int(var_val, &len, &vp->type, (long *)vp->val.integer, sizeof(vp->val.integer)); - break; - case COUNTER: - case GAUGE: - case TIMETICKS: - case UINTEGER: - vp->val.integer = (long *)calloc(1, sizeof(unsigned long)); - vp->val_len = sizeof(unsigned long); - asn_parse_unsigned_int(var_val, &len, &vp->type, (unsigned long *)vp->val.integer, sizeof(vp->val.integer)); - break; - case COUNTER64: - vp->val.counter64 = (struct counter64 *)calloc(1, sizeof(struct counter64) ); - vp->val_len = sizeof(struct counter64); - asn_parse_unsigned_int64(var_val, &len, &vp->type, - (struct counter64 *)vp->val.counter64, - sizeof(*vp->val.counter64)); - break; - case ASN_OCTET_STR: - case IPADDRESS: - case OPAQUE: - case NSAP: - vp->val.string = (u_char *)calloc(1, (unsigned)vp->val_len); - asn_parse_string(var_val, &len, &vp->type, vp->val.string, &vp->val_len); - break; - case ASN_OBJECT_ID: - vp->val_len = MAX_NAME_LEN; - asn_parse_objid(var_val, &len, &vp->type, objid, &vp->val_len); - vp->val_len *= sizeof(oid); - vp->val.objid = (oid *)calloc(1, (unsigned)vp->val_len); - bcopy((char *)objid, (char *)vp->val.objid, vp->val_len); - break; - case SNMP_NOSUCHOBJECT: - case SNMP_NOSUCHINSTANCE: - case SNMP_ENDOFMIBVIEW: - case ASN_NULL: - break; - default: - fprintf(stderr, "bad type returned (%x)\n", vp->type); - break; - } - } - return ret; -} - -/* - * Sends the input pdu on the session after calling snmp_build to create - * a serialized packet. If necessary, set some of the pdu data from the - * session defaults. Add a request corresponding to this pdu to the list - * of outstanding requests on this session, then send the pdu. - * Returns the request id of the generated packet if applicable, otherwise 1. - * On any error, 0 is returned. - * The pdu is freed by snmp_send() unless a failure occured. - */ -int -snmp_send(session, pdu) - struct snmp_session *session; - struct snmp_pdu *pdu; -{ - struct session_list *slp; - struct snmp_internal_session *isp = NULL; - u_char packet[PACKET_LENGTH]; - int length = PACKET_LENGTH; - struct request_list *rp; - struct timeval tv; - - for(slp = Sessions; slp; slp = slp->next){ - if (slp->session == session){ - isp = slp->internal; - break; - } - } - - if (! pdu) { - snmp_errno = SNMPERR_GENERR; - return 0; - } - - if (isp == NULL){ - snmp_errno = SNMPERR_BAD_SESSION; - return 0; - } - if (pdu->command == GET_REQ_MSG || pdu->command == GETNEXT_REQ_MSG - || pdu->command == GET_RSP_MSG || pdu->command == SET_REQ_MSG - || pdu->command == GETBULK_REQ_MSG ){ - if (pdu->reqid == SNMP_DEFAULT_REQID) - pdu->reqid = ++Reqid; - if (pdu->errstat == SNMP_DEFAULT_ERRSTAT) - pdu->errstat = 0; - if (pdu->errindex == SNMP_DEFAULT_ERRINDEX) - pdu->errindex = 0; - } else { - /* fill in trap defaults */ - pdu->reqid = 1; /* give a bogus non-error reqid for traps */ - if (pdu->enterprise_length == SNMP_DEFAULT_ENTERPRISE_LENGTH){ - pdu->enterprise = (oid *)calloc(1, sizeof(DEFAULT_ENTERPRISE)); - bcopy((char *)DEFAULT_ENTERPRISE, (char *)pdu->enterprise, sizeof(DEFAULT_ENTERPRISE)); - pdu->enterprise_length = sizeof(DEFAULT_ENTERPRISE)/sizeof(oid); - } - if (pdu->time == SNMP_DEFAULT_TIME) - pdu->time = DEFAULT_TIME; - } - if (pdu->address.sin_addr.s_addr == SNMP_DEFAULT_ADDRESS){ - if (isp->addr.sin_addr.s_addr != SNMP_DEFAULT_ADDRESS){ - bcopy((char *)&isp->addr, (char *)&pdu->address, sizeof(pdu->address)); - } else { - fprintf(stderr, "No remote IP address specified\n"); - snmp_errno = SNMPERR_BAD_ADDRESS; - return 0; - } - } - - - if (snmp_build(session, pdu, packet, &length, 0) < 0){ - fprintf(stderr, "Error building packet\n"); - snmp_errno = SNMPERR_GENERR; - return 0; - } -#if 1 /***/ - if (snmp_dump_packet){ - snmp_print_packet(packet, length, pdu->address, 1); - } -#endif /***/ - - gettimeofday(&tv, (struct timezone *)0); - if (sendto(isp->sd, (char *)packet, length, 0, (struct sockaddr *)&pdu->address, sizeof(pdu->address)) < 0){ - perror("sendto"); - snmp_errno = SNMPERR_GENERR; - return 0; - } - if (pdu->command == GET_REQ_MSG || pdu->command == GETNEXT_REQ_MSG - || pdu->command == SET_REQ_MSG || pdu->command == GETBULK_REQ_MSG ){ - /* set up to expect a response */ - rp = (struct request_list *)calloc(1, sizeof(struct request_list)); -#if 1 /***/ - if(! rp){ - fprintf(stderr, "Out of memory!\n"); - snmp_errno = SNMPERR_GENERR; - return 0; - } -#endif /***/ - rp->next_request = isp->requests; - isp->requests = rp; - rp->pdu = pdu; - rp->request_id = pdu->reqid; - - rp->retries = 1; - rp->timeout = session->timeout; - rp->time = tv; - tv.tv_usec += rp->timeout; - tv.tv_sec += tv.tv_usec / 1000000L; - tv.tv_usec %= 1000000L; - rp->expire = tv; -#if DEBUG_SNMPTRACE - snmp_print_trace(slp, rp, TRACE_SEND); -#endif - } - return pdu->reqid; -} - -/* - * Frees the pdu and any malloc'd data associated with it. - */ -void -snmp_free_pdu(struct snmp_pdu * pdu) -{ - struct variable_list *vp, *ovp; - - if (! pdu) - return; - - vp = pdu->variables; - while(vp){ - if (vp->name) { - free((char *)vp->name); - } - if (vp->val.string) { - free((char *)vp->val.string); - } - ovp = vp; - vp = vp->next_variable; - free((char *)ovp); - } - if (pdu->enterprise) { - free((char *)pdu->enterprise); - } - free((char *)pdu); -} - - -/* - * Checks to see if any of the fd's set in the fdset belong to - * snmp. Each socket with it's fd set has a packet read from it - * and snmp_parse is called on the packet received. The resulting pdu - * is passed to the callback routine for that session. If the callback - * routine returns successfully, the pdu and it's request are deleted. - */ -void -snmp_read(fdset) - fd_set *fdset; -{ - struct session_list *slp; - struct snmp_session *sp; - struct snmp_internal_session *isp; - u_char packet[PACKET_LENGTH]; - struct sockaddr_in from; - ssize_t length, fromlength; - struct snmp_pdu *pdu; - struct request_list *rp /**, *orp **/ ; - - for(slp = Sessions; slp; slp = slp->next){ - if (FD_ISSET(slp->internal->sd, fdset)){ - sp = slp->session; - isp = slp->internal; - fromlength = sizeof(from); - length = recvfrom(isp->sd, (char *)packet, PACKET_LENGTH, 0, (struct sockaddr *)&from, &fromlength); - if (length == -1) { - perror("recvfrom"); - return; - } -#if 1 /***/ - if (snmp_dump_packet){ - snmp_print_packet(packet, length, from, 0); - } - pdu = (struct snmp_pdu *)calloc(1, sizeof(struct snmp_pdu)); - - if(! pdu){ - fprintf(stderr, "Out of memory!\n"); - snmp_errno = SNMPERR_GENERR; - return; - } -#endif /***/ - - pdu->address = from; - pdu->reqid = 0; - pdu->variables = NULL; - pdu->enterprise = NULL; - pdu->enterprise_length = 0; - if (snmp_parse(sp, pdu, packet, length) < 0){ - fprintf(stderr, "Mangled packet\n"); - snmp_free_pdu(pdu); - return; - } - - if (pdu->command == GET_RSP_MSG || pdu->command == REPORT_MSG){ -#if 1 /***/ /* bug fix: illegal re-use of rp killed some requests */ - struct request_list *rp_next= 0; - for(rp = isp->requests; rp; rp = rp_next){ - rp_next = rp->next_request; - if (rp->request_id == pdu->reqid){ -#if DEBUG_SNMPTRACE - snmp_print_trace(slp, rp, TRACE_RECV); -#endif - if (sp->callback(RECEIVED_MESSAGE, sp, pdu->reqid, pdu, sp->callback_magic) == 1){ - /* successful, so delete request */ - free_one_request(isp, rp); - break; /* no more request with the same reqid */ - } - } - } -#endif /***/ - } else if (pdu->command == GET_REQ_MSG - || pdu->command == GETNEXT_REQ_MSG - || pdu->command == GETBULK_REQ_MSG - || pdu->command == TRP_REQ_MSG || pdu->command == SET_REQ_MSG){ -#if DEBUG_SNMPTRACE - snmp_print_trace(slp, NULL, TRACE_RECV); -#endif - sp->callback(RECEIVED_MESSAGE, sp, pdu->reqid, pdu, sp->callback_magic); - } - snmp_free_pdu(pdu); - } - } -} - -/* - * Returns info about what snmp requires from a select statement. - * numfds is the number of fds in the list that are significant. - * All file descriptors opened for SNMP are OR'd into the fdset. - * If activity occurs on any of these file descriptors, snmp_read - * should be called with that file descriptor set - * - * The timeout is the latest time that SNMP can wait for a timeout. The - * select should be done with the minimum time between timeout and any other - * timeouts necessary. This should be checked upon each invocation of select. - * If a timeout is received, snmp_timeout should be called to check if the - * timeout was for SNMP. (snmp_timeout is idempotent) - * - * Block is 1 if the select is requested to block indefinitely, rather - * than time out. If block is input as 1, the timeout value will be - * treated as undefined, but it must be available for setting in - * snmp_select_info. On return, if block is true, the value of - * timeout will be undefined. - * - * snmp_select_info returns the number of open sockets. (i.e. The - * number of sessions open) - */ -int -snmp_select_info(numfds, fdset, timeout, block) - int *numfds; - fd_set *fdset; - struct timeval *timeout; - int *block; /* should the select block until input arrives (i.e. no input) */ -{ - struct session_list *slp; - struct snmp_internal_session *isp; - struct request_list *rp; - struct timeval now, earliest; - int active = 0, requests = 0; - - timerclear(&earliest); - /* - * For each request outstanding, add it's socket to the fdset, - * and if it is the earliest timeout to expire, mark it as lowest. - */ - for(slp = Sessions; slp; slp = slp->next){ - active++; - isp = slp->internal; - if ((isp->sd + 1) > *numfds) - *numfds = (isp->sd + 1); - FD_SET(isp->sd, fdset); - if (isp->requests){ - /* found another session with outstanding requests */ - requests++; - for(rp = isp->requests; rp; rp = rp->next_request){ - if (!timerisset(&earliest) || timercmp(&rp->expire, &earliest, <)) - earliest = rp->expire; - } - } - } - if (requests == 0) /* if none are active, skip arithmetic */ - return active; - - /* - * Now find out how much time until the earliest timeout. This - * transforms earliest from an absolute time into a delta time, the - * time left until the select should timeout. - */ - gettimeofday(&now, (struct timezone *)0); - earliest.tv_sec--; /* adjust time to make arithmetic easier */ - earliest.tv_usec += 1000000L; - earliest.tv_sec -= now.tv_sec; - earliest.tv_usec -= now.tv_usec; - while (earliest.tv_usec >= 1000000L){ - earliest.tv_usec -= 1000000L; - earliest.tv_sec += 1; - } - if (earliest.tv_sec < 0){ - earliest.tv_sec = 0; - earliest.tv_usec = 0; - } - - /* if it was blocking before or our delta time is less, reset timeout */ - if (*block == 1 || timercmp(&earliest, timeout, <)){ - *timeout = earliest; - *block = 0; - } - return active; -} - -/* - * snmp_timeout should be called whenever the timeout from - * snmp_select_info expires, but it is idempotent, so snmp_timeout can - * be polled (probably a cpu expensive proposition). snmp_timeout - * checks to see if any of the sessions have an outstanding request - * that has timed out. If it finds one (or more), and that pdu has - * more retries available, a new packet is formed from the pdu and is - * resent. If there are no more retries available, the callback for - * the session is used to alert the user of the timeout. - */ -void -snmp_timeout() -{ - struct session_list *slp; - struct snmp_session *sp; - struct snmp_internal_session *isp; -#if 1 /***/ /* replacing freeme by simpler and safer rp_next*/ - struct request_list *rp, *rp_next = 0; -#endif /***/ - struct timeval now; - - gettimeofday(&now, (struct timezone *)0); - /* - * For each request outstanding, check to see if it has expired. - */ - for(slp = Sessions; slp; slp = slp->next){ - sp = slp->session; - isp = slp->internal; -#if 1 /***/ /* simplification */ - for(rp = isp->requests; rp; rp = rp_next){ - rp_next = rp->next_request; - if (timercmp(&rp->expire, &now, <)){ - /* this timer has expired */ - if (rp->retries >= sp->retries){ -#if DEBUG_SNMPTRACE - snmp_print_trace(slp, rp, TRACE_TIMEOUT); -#endif - /* No more chances, delete this entry */ - sp->callback(TIMED_OUT, sp, rp->pdu->reqid, rp->pdu, sp->callback_magic); - free_one_request(isp, rp); - continue; -#endif /***/ - } else { - u_char packet[PACKET_LENGTH]; - int length = PACKET_LENGTH; - struct timeval tv; - - /* retransmit this pdu */ - rp->retries++; - rp->timeout <<= 1; - if (snmp_build(sp, rp->pdu, packet, &length, 0) < 0) { - fprintf(stderr, "Error building packet\n"); - } -#if 1/***/ mplification */by simpler and safer rp_next*/n s */ replace... - */ - * ÿ¯ùsnmplib/snmp_api.cc.hÿ°…<Ðlib/snmp_api.c~~ñÿ±<ðÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±«=ÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²=0ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²Š=Pÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ³ -=pÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³‚ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×Áÿ³ùÿ´=ø%D(ÿ´_=à\BØÿ´©=˜4BØÿ´ø=ÈHBØÿµB>ÿµ]ÿµmÿµzÿµ >(ÿµ·ÿµÉÿµÖÿµï>@ÿ¶ÿ¶ ÿ¶4ÿ¶Pÿ¶rÿ¶~ÿ¶ˆ0ÿ¶Ÿÿ¶·ÿ¶Ù‚àÿ·ÿ·#ÿ·/ÿ·>>Xÿ·V3/usr/people/wessels/.indent.proÿ¯èÿ¯ùÿ° ÿ°ÿ°.ÿ°?ÿ°Mÿ°[ÿ°pÿ°…ÿ°•ÿ°£ÿ°²ÿ°Åÿ°Ûÿ°ñÿ± -ÿ±ÿ±2ÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±™ÿ±«ÿ±ºÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²ÿ²ÿ²2ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²ÿ²Šÿ²™ÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ²öÿ³ -ÿ³ ÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³sÿ³‚ÿ³‘ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×ÿ³çÿ³ùÿ´ÿ´ÿ´ÿ´)ÿ´3ÿ´Cÿ´Oÿ´_ÿ´kÿ´tÿ´ÿ´ÿ´Ÿÿ´©ÿ´·ÿ´Åÿ´Òÿ´Ýÿ´íÿ´øÿµÿµÿµÿµ)ÿµ7ÿµBÿµMÿµ]ÿµmÿµzÿµ‰ÿµ ÿµ«ÿµ·ÿµÉÿµÖÿµâÿµïÿ¶ÿ¶ÿ¶ ÿ¶4ÿ¶?ÿ¶Pÿ¶bÿ¶rÿ¶~ÿ¶ˆÿ¶”ÿ¶Ÿÿ¶«ÿ¶·ÿ¶Éÿ¶Ùÿ¶íÿ·ÿ·ÿ·#ÿ·/ÿ·>ÿ·Lÿ·Vÿ·fÿ·q@ ; - } - - if (pdu->command == GET_RSP_MSG || pdu->command == REPORT_MSG){ -#if 1 /***/ /* bug fix: illegal re-use of rp killed some requests */ - struct request_list *rp_next= 0; - for(rp = isp->requests; rp; rp = rp_next){ - rp_next = rp->next_request; - if (rp->request_id == pdu->reqid){ -#if DEBUG_SNMPTRACE - snmp_print_trace(slp, rp, TRACE_RECV); -#endif - if (sp->callback(RECEIVED_MESSAGE, sp, pdu->reqid, pdu, sp->callback_magic) == 1){ - /* successful, so delete request */ - free_one_request(isp, rp); - break; /* no more request with the same reqid */ - } - } - } -#endif /***/ - } else if (pdu->command == GET_REQ_MSG - || pdu->command == GETNEXT_REQ_MSG - || pdu->command == GETBULK_REQ_MSG - || pdu->command == TRP_REQ_MSG || pdu->command == SET_REQ_MSG){ -#if DEBUG_SNMPTRACE - snmp_print_trace(slp, NULL, TRACE_RECV); -#endif - sp->callback(RECEIVED_MESSAGE, sp, pdu->reqid, pdu, sp->callback_magic); - } - snmp_free_pdu(pdu); - } - } -} - -/* - * Returns info about what snmp requires from a select statement. - * numfds is the number of fds in the list that are significant. - * All file descriptors opened for SNMP are OR'd into the fdset. - * If activity occurs on any of these file descriptors, snmp_read - * should be called with that file descriptor set - * - * The timeout is the latest time that SNMP can wait for a timeout. The - * select should be done with the minimum time between timeout and any other - * timeouts necessary. This should be checked upon each invocation of select. - * If a timeout is received, snmp_timeout should be called to check if the - * timeout was for SNMP. (snmp_timeout is idempotent) - * - * Block is 1 if the select is requested to block indefinitely, rather - * than time out. If block is input as 1, the timeout value will be - * treated as undefined, but it must be available for setting in - * snmp_select_info. On return, if block is true, the value of - * timeout will be undefined. - * - * snmp_select_info returns the number of open sockets. (i.e. The - * number of sessions open) - */ -int -snmp_select_info(numfds, fdset, timeout, block) - int *numfds; - fd_set *fdset; - struct timeval *timeout; - int *block; /* should the select block until input arrives (i.e. no input) */ -{ - struct session_list *slp; - struct snmp_internal_session *isp; - struct request_list *rp; - struct timeval now, earliest; - int active = 0, requests = 0; - - timerclear(&earliest); - /* - * For each request outstanding, add it's socket to the fdset, - * and if it is the earliest timeout to expire, mark it as lowest. - */ - for(slp = Sessions; slp; slp = slp->next){ - active++; - isp = slp->internal; - if ((isp->sd + 1) > *numfds) - *numfds = (isp->sd + 1); - FD_SET(isp->sd, fdset); - if (isp->requests){ - /* found another session with outstanding requests */ - requests++; - for(rp = isp->requests; rp; rp = rp->next_request){ - if (!timerisset(&earliest) || timercmp(&rp->expire, &earliest, <)) - earliest = rp->expire; - } - } - } - if (requests == 0) /* if none are active, skip arithmetic */ - return active; - - /* - * Now find out how much time until the earliest timeout. This - * transforms earliest from an absolute time into a delta time, the - * time left until the select should timeout. - */ - gettimeofday(&now, (struct timezone *)0); - earliest.tv_sec--; /* adjust time to make arithmetic easier */ - earliest.tv_usec += 1000000L; - earliest.tv_sec -= now.tv_sec; - earliest.tv_usec -= now.tv_usec; - while (earliest.tv_usec >= 1000000L){ - earliest.tv_usec -= 1000000L; - earliest.tv_sec += 1; - } - if (earliest.tv_sec < 0){ - earliest.tv_sec = 0; - earliest.tv_usec = 0; - } - - /* if it was blocking before or our delta time is less, reset timeout */ - if (*block == 1 || timercmp(&earliest, timeout, <)){ - *timeout = earliest; - *block = 0; - } - return active; -} - -/* - * snmp_timeout should be called whenever the timeout from - * snmp_select_info expires, but it is idempotent, so snmp_timeout can - * be polled (probably a cpu expensive proposition). snmp_timeout - * checks to see if any of the sessions have an outstanding request - * that has timed out. If it finds one (or more), and that pdu has - * more retries available, a new packet is formed from the pdu and is - * resent. If there are no more retries available, the callback for - * the session is used to alert the user of the timeout. - */ -void -snmp_timeout() -{ - struct session_list *slp; - struct snmp_session *sp; - struct snmp_internal_session *isp; -#if 1 /***/ /* replacing freeme by simpler and safer rp_next*/ - struct request_list *rp, *rp_next = 0; -#endif /***/ - struct timeval now; - - gettimeofday(&now, (struct timezone *)0); - /* - * For each request outstanding, check to see if it has expired. - */ - for(slp = Sessions; slp; slp = slp->next){ - sp = slp->session; - isp = slp->internal; -#if 1 /***/ /* simplification */ - for(rp = isp->requests; rp; rp = rp_next){ - rp_next = rp->next_request; - if (timercmp(&rp->expire, &now, <)){ - /* this timer has expired */ - if (rp->retries >= sp->retries){ -#if DEBUG_SNMPTRACE - snmp_print_trace(slp, rp, TRACE_TIMEOUT); -#endif - /* No more chances, delete this entry */ - sp->callback(TIMED_OUT, sp, rp->pdu->reqid, rp->pdu, sp->callback_magic); - free_one_request(isp, rp); - continue; -#endif /***/ - } else { - u_char packet[PACKET_LENGTH]; - int length = PACKET_LENGTH; - struct timeval tv; - - /* retransmit this pdu */ - rp->retries++; - rp->timeout <<= 1; - if (snmp_build(sp, rp->pdu, packet, &length, 0) < 0) { - fprintf(stderr, "Error building packet\n"); - } - the input session, and places the data into - * the input pdu. length is the length of the input packet. If any errors - * are encountered, -1 is returned. Otherwise, a 0 is returned. - */ -static int -snmp_parse(session, pdu, data, length) - struct snmp_session *session; - struct snmp_pdu *pdu; - u_char *data; - int length; -{ - u_char msg_type; - u_char type; - u_char *var_val; - long version; - int len, four; - u_char community[256]; - int community_length = 256; - struct variable_list *vp = 0; - oid objid[MAX_NAME_LEN], *op; - u_char *origdata = data; - int origlength = length; - int ret = 0; - u_char *save_data; - - /* authenticates message and returns length if valid */ - data = snmp_auth_parse(data, &length, community, &community_length, &version); - if (data == NULL) - return -1; - - if( version != SNMP_VERSION_1 && version != SNMP_VERSION_2C && version != SNMP_VERSION_2 ) { - fprintf(stderr, "Wrong version: %ld\n", version); - return -1; - } - - save_data = data; - - data = asn_parse_header(data, &length, &msg_type); - if (data == NULL) - return -1; - pdu->command = msg_type; - - if( session->authenticator ) { - ret = session->authenticator( origdata, origlength, save_data - community_length, - community_length, session, pdu ); - if( ret < 0 ) return ret; - } - - if (pdu->command != TRP_REQ_MSG){ - data = asn_parse_int(data, &length, &type, (long *)&pdu->reqid, sizeof(pdu->reqid)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->errstat, sizeof(pdu->errstat)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->errindex, sizeof(pdu->errindex)); - if (data == NULL) - return -1; - } else { - pdu->enterprise_length = MAX_NAME_LEN; - data = asn_parse_objid(data, &length, &type, objid, &pdu->enterprise_length); - if (data == NULL) - return -1; - pdu->enterprise = (oid *)calloc(1, pdu->enterprise_length * sizeof(oid)); - bcopy((char *)objid, (char *)pdu->enterprise, pdu->enterprise_length * sizeof(oid)); - - four = 4; - data = asn_parse_string(data, &length, &type, (u_char *)&pdu->agent_addr.sin_addr.s_addr, &four); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->trap_type, sizeof(pdu->trap_type)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->specific_type, sizeof(pdu->specific_type)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->time, sizeof(pdu->time)); - if (data == NULL) - return -1; - } - data = asn_parse_header(data, &length, &type); - if (data == NULL) - return -1; - if (type != (u_char)(ASN_SEQUENCE | ASN_CONSTRUCTOR)) - return -1; - while((int)length > 0){ - if (pdu->variables == NULL){ - pdu->variables = vp = (struct variable_list *)calloc(1, sizeof(struct variable_list)); - } else { - vp->next_variable = (struct variable_list *)calloc(1, sizeof(struct variable_list)); - vp = vp->next_variable; - } - vp->next_variable = NULL; - vp->val.string = NULL; - vp->name = NULL; - vp->name_length = MAX_NAME_LEN; - data = snmp_parse_var_op(data, objid, &vp->name_length, &vp->type, &vp->val_len, &var_val, (int *)&length); - if (data == NULL) - return -1; - op = (oid *)calloc(1, (unsigned)vp->name_length * sizeof(oid)); - bcopy((char *)objid, (char *)op, vp->name_length * sizeof(oid)); - vp->name = op; - - len = PACKET_LENGTH; - switch((short)vp->type){ - case ASN_INTEGER: - vp->val.integer = (long *)calloc(1, sizeof(long)); - vp->val_len = sizeof(long); - asn_parse_int(var_val, &len, &vp->type, (long *)vp->val.integer, sizeof(vp->val.integer)); - break; - case COUNTER: - case GAUGE: - case TIMETICKS: - case UINTEGER: - vp->val.integer = (long *)calloc(1, sizeof(unsigned long)); - vp->val_len = sizeof(unsigned long); - asn_parse_unsigned_int(var_val, &len, &vp->type, (unsigned long *)vp->val.integer, sizeof(vp->val.integer)); - break; - case COUNTER64: - vp->val.counter64 = (struct counter64 *)calloc(1, sizeof(struct counter64) ); - vp->val_len = sizeof(struct counter64); - asn_parse_unsigned_int64(var_val, &len, &vp->type, - (struct counter64 *)vp->val.counter64, - sizeof(*vp->val.counter64)); - break; - case ASN_OCTET_STR: - case IPADDRESS: - case OPAQUE: - case NSAP: - vp->val.string = (u_char *)calloc(1, (unsigned)vp->val_len); - asn_parse_string(var_val, &len, &vp->type, vp->val.string, &vp->val_len); - break; - case ASN_OBJECT_ID: - vp->val_len = MAX_NAME_LEN; - asn_parse_objid(var_val, &len, &vp->type, objid, &vp->val_len); - vp->val_len *= sizeof(oid); - vp->val.objid = (oid *)calloc(1, (unsigned)vp->val_len); - bcopy((char *)objid, (char *)vp->val.objid, vp->val_len); - break; - case SNMP_NOSUCHOBJECT: - case SNMP_NOSUCHINSTANCE: - case SNMP_ENDOFMIBVIEW: - case ASN_NULL: - break; - default: - fprintf(stderr, "bad type returned (%x)\n", vp->type); - break; - } - } - return ret; -} - -/* - * Sends the input pdu on the session after calling snmp_build to create - * a serialized packet. If necessary, set some of the pdu data from the - * session defaults. Add a request corresponding to this pdu to the list - * of outstanding requests on this session, then send the pdu. - * Returns the request id of the generated packet if applicable, otherwise 1. - * On any error, 0 is returned. - * The pdu is freed by snmp_send() unless a failure occured. - */ -int -snmp_send(session, pdu) - struct snmp_session *session; - struct snmp_pdu *pdu; -{ - struct session_list *slp; - struct snmp_internal_session *isp = NULL; - u_char packet[PACKET_LENGTH]; - int length = PACKET_LENGTH; - struct request_list *rp; - struct timeval tv; - - for(slp = Sessions; slp; slp = slp->next){ - if (slp->session == session){ - isp = slp->internal; - break; - } - } - - if (! pdu) { - snmp_errno = SNMPERR_GENERR; - return 0; - } - - if (isp == NULL){ - snmp_errno = SNMPERR_BAD_SESSION; - return 0; - } - if (pdu->command == GET_REQ_MSG || pdu->command == GETNEXT_REQ_MSG - || pdu->command == GET_RSP_MSG || pdu->command == SET_REQ_MSG - || pdu->command == GETBULK_REQ_MSG ){ - if (pdu->reqid == SNMP_DEFAULT_REQID) - pdu->reqid = ++Reqid; - if (pdu->errstat == SNMP_DEFAULT_ERRSTAT) - pdu->errstat = 0; - if (pdu->errindex == SNMP_DEFAULT_ERRINDEX) - pdu->errindex = 0; - } else { - /* fill in trap defaults */ - pdu->reqid = 1; /* give a bogus non-error reqid for traps */ - if (pdu->enterprise_length == SNMP_DEFAULT_ENTERPRISE_LENGTH){ - pdu->enterprise = (oid *)calloc(1, sizeof(DEFAULT_ENTERPRISE)); - bcopy((char *)DEFAULT_ENTERPRISE, (char *)pdu->enterprise, sizeof(DEFAULT_ENTERPRISE)); - pdu->enterprise_length = sizeof(DEFAULT_ENTERPRISE)/sizeof(oid); - } - if (pdu->time == SNMP_DEFAULT_TIME) - pdu->time = DEFAULT_TIME; - } - if (pdu->address.sin_addr.s_addr == SNMP_DEFAULT_ADDRESS){ - if (isp->addr.sin_addr.s_addr != SNMP_DEFAULT_ADDRESS){ - bcopy((char *)&isp->addr, (char *)&pdu->address, sizeof(pdu->address)); - } else { - fprintf(stderr, "No remote IP address specified\n"); - snmp_errno = SNMPERR_BAD_ADDRESS; - return 0; - } - } - - - if (snmp_build(session, pdu, packet, &length, 0) < 0){ - fprintf(stderr, "Error building packet\n"); - snmp_errno = SNMPERR_GENERR; - return 0; - } -#if 1 /***/ - if (snmp_dump_packet){ - snmp_print_packet(packet, length, pdu->address, 1); - } -#endif /***/ - - gettimeofday(&tv, (struct timezone *)0); - if (sendto(isp->sd, (char *)packet, length, 0, (struct sockaddr *)&pdu->address, sizeof(pdu->address)) < 0){ - perror("sendto"); - snmp_errno = SNMPERR_GENERR; - return 0; - } - if (pdu->command == GET_REQ_MSG || pdu->command == GETNEXT_REQ_MSG - || pdu->command == SET_REQ_MSG || pdu->command == GETBULK_REQ_MSG ){ - /* set up to expect a response */ - rp = (struct request_list *)calloc(1, sizeof(struct request_list)); -#if 1 /***/ - if(! rp){ - fprintf(stderr, "Out of memory!\n"); - snmp_errno = SNMPERR_GENERR; - return 0; - } -#endif /***/ - rp->next_request = isp->requests; - isp->requests = rp; - rp->pdu = pdu; - rp->request_id = pdu->reqid; - - rp->retries = 1; - rp->timeout = session->timeout; - rp->time = tv; - tv.tv_usec += rp->timeout; - tv.tv_sec += tv.tv_usec / 1000000L; - tv.tv_usec %= 1000000L; - rp->expire = tv; -#if DEBUG_SNMPTRACE - snmp_print_trace(slp, rp, TRACE_SEND); -#endif - } - return pdu->reqid; -} - -/* - * Frees the pdu and any malloc'd data associated with it. - */ -void -snmp_free_pdu(struct snmp_pdu * pdu) -{ - struct variable_list *vp, *ovp; - - if (! pdu) - return; - - vp = pdu->variables; - while(vp){ - if (vp->name) { - free((char *)vp->name); - } - if (vp->val.string) { - free((char *)vp->val.string); - } - ovp = vp; - vp = vp->next_variable; - free((char *)ovp); - } - if (pdu->enterprise) { - free((char *)pdu->enterprise); - } - free((char *)pdu); -} - - -/* - * Checks to see if any of the fd's set in the fdset belong to - * snmp. Each socket with it's fd set has a packet read from it - * and snmp_parse is called on the packet received. The resulting pdu - * is passed to the callback routine for that session. If the callback - * routine returns successfully, the pdu and it's request are deleted. - */ -void -snmp_read(fdset) - fd_set *fdset; -{ - struct session_list *slp; - struct snmp_session *sp; - struct snmp_internal_session *isp; - u_char packet[PACKET_LENGTH]; - struct sockaddr_in from; - ssize_t length, fromlength; - struct snmp_pdu *pdu; - struct request_list *rp /**, *orp **/ ; - - for(slp = Sessions; slp; slp = slp->next){ - if (FD_ISSET(slp->internal->sd, fdset)){ - sp = slp->session; - isp = slp->internal; - fromlength = sizeof(from); - length = recvfrom(isp->sd, (char *)packet, PACKET_LENGTH, 0, (struct sockaddr *)&from, &fromlength); - if (length == -1) { - perror("recvfrom"); - return; - } -#if 1 /***/ - if (snmp_dump_packet){ - snmp_print_packet(packet, length, from, 0); - } - pdu = (struct snmp_pdu *)calloc(1, sizeof(struct snmp_pdu)); - - if(! pdu){ - fprintf(stderr, "Out of memory!\n"); - snmp_errno = SNMPERR_GENERR; - return; - } -#endif /***/ - - pdu->address = from; - pdu->reqid = 0; - pdu->variables = NULL; - pdu->enterprise = NULL; - pdu->enterprise_length = 0; - if (snmp_parse(sp, pdu, packet, length) < 0){ - fprintf(stderr, "Mangled packet\n"); - snmp_free_pdu(pdu); - returnBÐ+= m -È /* >X*/ B4¨NMPTì */cfor testing purposes */e key! replace... - */ - * ÿ¯ùsnmplib/snmp_api.cc.hÿ°…<Ðlib/snmp_api.c~~ñÿ±<ðÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±«=ÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²=0ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²Š=Pÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ³ -=pÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³‚ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×Áÿ³ùÿ´=ø%D(ÿ´_=à\BØÿ´©=˜4BØÿ´ø=ÈHBØÿµB>ÿµ]ÿµmÿµzÿµ >(ÿµ·ÿµÉÿµÖÿµï>@ÿ¶ÿ¶ ÿ¶4ÿ¶Pÿ¶rÿ¶~ÿ¶ˆ0ÿ¶Ÿ4¨ÿ¶·ÿ¶Ù‰èÿ·ÿ·#ÿ·/ÿ·>>Xÿ·V3/usr/people/wessels/.indent.proÿ¯èÿ¯ùÿ° ÿ°ÿ°.ÿ°?ÿ°Mÿ°[ÿ°pÿ°…ÿ°•ÿ°£ÿ°²ÿ°Åÿ°Ûÿ°ñÿ± -ÿ±ÿ±2ÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±™ÿ±«ÿ±ºÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²ÿ²ÿ²2ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²ÿ²Šÿ²™ÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ²öÿ³ -ÿ³ ÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³sÿ³‚ÿ³‘ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×ÿ³çÿ³ùÿ´ÿ´ÿ´ÿ´)ÿ´3ÿ´Cÿ´Oÿ´_ÿ´kÿ´tÿ´ÿ´ÿ´Ÿÿ´©ÿ´·ÿ´Åÿ´Òÿ´Ýÿ´íÿ´øÿµÿµÿµÿµ)ÿµ7ÿµBÿµMÿµ]ÿµmÿµzÿµ‰ÿµ ÿµ«ÿµ·ÿµÉÿµÖÿµâÿµïÿ¶ÿ¶ÿ¶ ÿ¶4ÿ¶?ÿ¶Pÿ¶bÿ¶rÿ¶~ÿ¶ˆÿ¶”ÿ¶Ÿÿ¶«ÿ¶·ÿ¶Éÿ¶Ùÿ¶íÿ·ÿ·ÿ·#ÿ·/ÿ·>ÿ·Lÿ·Vÿ·fÿ·q°>X 4¨ $  @,2ˆ…>X‚àC Ž0   ¸ude/snmp_groupvars.h~ àude/snmp_groupvars.h ŽX Ž€ Ž¨ ŽÐ „©/*********************************************************** - Copyright 1989 by Carnegie Mellon University - - All Rights Reserved - -Permission to use, copy, modify, and distribute this software and its -documentation for any purpose and without fee is hereby granted, -provided that the above copyright notice appear in all copies and that -both that copyright notice and this permission notice appear in -supporting documentation, and that the name of CMU not be -used in advertising or publicity pertaining to distribution of the -software without specific, written prior permission. - -CMU DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING -ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL -CMU BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR -ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, -WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, -ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS -SOFTWARE. -******************************************************************/ -/* - * snmp_api.c - API for access to snmp. - */ -#define DEBUG_SNMPTRACE 0 /* set to 1 to print all SNMP actions */ -#define DEBUG_SNMPFULLDUMP 0 /* set to 1 to dump all SNMP packets */ - -#include -#include -#include -#include -#include -#include -#include -#ifdef linux -#include -#include -#include -#include -#endif - - -#include "asn1.h" -#include "snmp.h" -#include "snmp_impl.h" -#include "snmp_api.h" -#include "snmp_client.h" - -#define PACKET_LENGTH 4500 - -#ifndef BSD4_3 -#define BSD4_2 -#endif - -#if !defined(BSD4_3) && !defined(linux) && !defined(sun) - -typedef long fd_mask; -#define NFDBITS (sizeof(fd_mask) * NBBY) /* bits per mask */ - -#define FD_SET(n, p) ((p)->fds_bits[(n)/NFDBITS] |= (1 << ((n) % NFDBITS))) -#define FD_CLR(n, p) ((p)->fds_bits[(n)/NFDBITS] &= ~(1 << ((n) % NFDBITS))) -#define FD_ISSET(n, p) ((p)->fds_bits[(n)/NFDBITS] & (1 << ((n) % NFDBITS))) -#define FD_ZERO(p) bzero((char *)(p), sizeof(*(p))) -#endif - -oid default_enterprise[] = {1, 3, 6, 1, 4, 1, 3, 1, 1}; /* enterprises.cmu.systems.cmuSNMP */ - -#define DEFAULT_COMMUNITY "public" -#define DEFAULT_REMPORT SNMP_PORT -#define DEFAULT_ENTERPRISE default_enterprise -#define DEFAULT_TIME 0 -#define DEFAULT_MMS 1389 /* large, randomly picked for testing purposes */ - -/* - * Internal information about the state of the snmp session. - */ -struct snmp_internal_session { - int sd; /* socket descriptor for this connection */ - ipaddr addr; /* address of connected peer */ - struct request_list *requests;/* Info about outstanding requests */ -}; - -/* - * A list of all the outstanding requests for a particular session. - */ -struct request_list { - struct request_list *next_request; - u_long request_id; /* request id */ - int retries; /* Number of retries */ - u_long timeout; /* length to wait for timeout */ - struct timeval time; /* Time this request was made */ - struct timeval expire; /* time this request is due to expire */ - struct snmp_pdu *pdu; /* The pdu for this request (saved so it can be retransmitted */ -}; - -/* - * The list of active/open sessions. - */ -struct session_list { - struct session_list *next; - struct snmp_session *session; - struct snmp_internal_session *internal; -}; - -struct session_list *Sessions = NULL; - -u_long Reqid = 0; -int snmp_errno = 0; - -char *api_errors[4] = { - "Unknown session", - "Unknown host", - "Invalid local port", - "Unknown Error" -}; - - -void sync_with_agent(); -int parse_app_community_string(); -void snmp_synch_setup(); -int snmp_synch_response(); -void md5Digest(); - - -static char * -api_errstring(snmp_errnumber) - int snmp_errnumber; -{ - if (snmp_errnumber <= SNMPERR_BAD_SESSION && snmp_errnumber >= SNMPERR_GENERR){ - return api_errors[snmp_errnumber + 4]; - } else { - return "Unknown Error"; - } -} - -#if 0 -/* - * Gets initial request ID for all transactions. - */ -static void -init_snmp(){ - struct timeval tv; - - gettimeofday(&tv, (struct timezone *)0); - srandom(tv.tv_sec ^ tv.tv_usec); - Reqid = random(); -} -#endif - - -/* - * Dump snmp packet to stdout: - */ -static void -snmp_print_packet(packet, length, addr, code) - char *packet; - int length; - ipaddr addr; - int code; -{ - if(length < 0) { - return; - } - if (code <= 0) { /* received */ - printf("\nReceived %4d bytes from ", length); - } - else { /* sending */ - printf("\nSending %4d bytes to ", length); - } - printf("%s:", inet_ntoa(addr.sin_addr)); -#if DEBUG_SNMPFULLDUMP - for (count = 0; count < length; count++) { - if ((count & 15) == 0) { - printf("\n "); - } - printf("%02X ", (int)(packet[count]&255)); - } -#endif - fflush(stdout); -} - -#if DEBUG_SNMPTRACE -/* - * Print request - */ -#define TRACE_SEND (0) -#define TRACE_RECV (1) -#define TRACE_TIMEOUT (2) -static void -snmp_print_trace(slp, rp, code) - struct session_list *slp; - struct request_list *rp; - int code; -{ - int reqid=0, retries=1; - if( rp ){ - reqid = rp->request_id; - retries = rp->retries; - } - printf("\n Session %2d ReqId %4d ", slp->internal->sd, reqid); - switch(code) - { - case TRACE_SEND: printf("send pdu (%d)", retries);break; - case TRACE_RECV: printf("recv pdu");break; - case TRACE_TIMEOUT: printf("time out");break; - } - fflush(stdout); -} -#endif /* DEBUG_SNMPTRACE */ - - - - -/* - * Sets up the session with the snmp_session information provided - * by the user. Then opens and binds the necessary UDP port. - * A handle to the created session is returned (this is different than - * the pointer passed to snmp_open()). On any error, NULL is returned - * and snmp_errno is set to the appropriate error code. - */ -struct snmp_session * -snmp_open(session) - struct snmp_session *session; -{ - struct session_list *slp; - struct snmp_internal_session *isp; - u_char *cp; - int sd; - u_long addr; - struct sockaddr_in me; - struct hostent *hp; - struct servent *servp; - extern int check_received_pkt(); - - /* Copy session structure and link into list */ - slp = (struct session_list *)calloc(1, sizeof(struct session_list)); - slp->internal = isp = (struct snmp_internal_session *)calloc(1, sizeof(struct snmp_internal_session)); - bzero((char *)isp, sizeof(struct snmp_internal_session)); - slp->internal->sd = -1; /* mark it not set */ - slp->session = (struct snmp_session *)calloc(1, sizeof(struct snmp_session)); - bcopy((char *)session, (char *)slp->session, sizeof(struct snmp_session)); - session = slp->session; - /* now link it in. */ - slp->next = Sessions; - Sessions = slp; - - /* - * session now points to the new structure that still contains pointers to - * data allocated elsewhere. Some of this data is copied to space malloc'd - * here, and the pointer replaced with the new one. - */ - - if (session->peername != NULL){ - cp = (u_char *)calloc(1, (unsigned)strlen(session->peername) + 1); - strcpy((char *)cp, session->peername); - session->peername = (char *)cp; - } - - if (session->retries == SNMP_DEFAULT_RETRIES) - session->retries = SNMP_API_DEFAULT_RETRIES; - if (session->timeout == SNMP_DEFAULT_TIMEOUT) - session->timeout = SNMP_API_DEFAULT_TIMEOUT; - if (session->MMS == 0 ) - session->MMS = DEFAULT_MMS; - isp->requests = NULL; - - - /* Fill in defaults if necessary */ - if (session->community_len != SNMP_DEFAULT_COMMUNITY_LEN){ - if( *session->community == '+' ) { - session->community_len--; - cp = (u_char *) calloc(1, (unsigned) session->community_len); - bcopy((char *) session->community+1, (char *)cp, - session->community_len); - session->version = SNMP_VERSION_2C; - } else { - cp = (u_char *) calloc(1, (unsigned) session->community_len); - bcopy((char *) session->community, (char *) cp, - session->community_len); - } - - } else { - session->community_len = strlen(DEFAULT_COMMUNITY); - cp = (u_char *)calloc(1, (unsigned)session->community_len); - bcopy((char *)DEFAULT_COMMUNITY, (char *)cp, session->community_len); - } - - /* Set up connections */ - sd = socket(AF_INET, SOCK_DGRAM, 0); - if (sd < 0){ - perror("socket"); - snmp_errno = SNMPERR_GENERR; - if (!snmp_close(session)){ - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", api_errstring(snmp_errno)); - exit(1); - } - return 0; - } - isp->sd = sd; - - if (session->peername != SNMP_DEFAULT_PEERNAME){ - if ((addr = inet_addr(session->peername)) != -1){ - bcopy((char *)&addr, (char *)&isp->addr.sin_addr, sizeof(isp->addr.sin_addr)); - } else { - hp = gethostbyname(session->peername); - if (hp == NULL){ - fprintf(stderr, "unknown host: %s\n", session->peername); - snmp_errno = SNMPERR_BAD_ADDRESS; - if (!snmp_close(session)){ - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", api_errstring(snmp_errno)); - exit(2); - } - return 0; - } else { - bcopy((char *)hp->h_addr, (char *)&isp->addr.sin_addr, hp->h_length); - } - } - isp->addr.sin_family = AF_INET; - if (session->remote_port == SNMP_DEFAULT_REMPORT){ - /*servp = getservbyname("snmp", "udp");*/ - servp=NULL; - if (servp != NULL){ - isp->addr.sin_port = servp->s_port; - } else { - isp->addr.sin_port = htons(SNMP_PORT); - } - } else { - isp->addr.sin_port = htons(session->remote_port); - } - } else { - isp->addr.sin_addr.s_addr = SNMP_DEFAULT_ADDRESS; - } - - me.sin_family = AF_INET; - me.sin_addr.s_addr = INADDR_ANY; - me.sin_port = htons(session->local_port); - if (bind(sd, (struct sockaddr *)&me, sizeof(me)) != 0){ - perror("bind"); - snmp_errno = SNMPERR_BAD_LOCPORT; - if (! snmp_close(session)){ - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", - api_errstring(snmp_errno)); - exit(3); - } - return 0; - } - - if( *cp == '/' ) { - session->authenticator = check_received_pkt; - sync_with_agent(session); - parse_app_community_string( session ); - session->qoS |= USEC_QOS_GENREPORT; - } - - /* replace comm pointer with pointer to new data: */ - session->community = cp; - - return session; -} - -void -sync_with_agent( session ) -struct snmp_session *session; -{ - struct snmp_pdu *pdu, *response = 0; - int status; - - session->qoS = USEC_QOS_GENREPORT; - session->userLen = 6; - session->version = SNMP_VERSION_2; - strcpy( session->userName, "public" ); - - snmp_synch_setup(session); - pdu = snmp_pdu_create(GET_REQ_MSG); - status = snmp_synch_response(session, pdu, &response); - - if (status == STAT_SUCCESS){ - memcpy( session->agentID, response->params.agentID, 12 ); - - /* save the clocks -- even though they are not authentic */ - session->agentBoots = response->params.agentBoots; - session->agentTime = response->params.agentTime; - session->agentClock = response->params.agentTime - time(NULL); - - } else { - if (status == STAT_TIMEOUT){ - printf("No Response from %s\n", session->peername); - } else { /* status == STAT_ERROR */ - printf("An error occurred, Quitting\n"); - } - exit( -1 ); - } - - /** freed to early: - snmp_free_pdu(pdu); - if (response) snmp_free_pdu(response); - **/ -} -#if 1 /***/ -/* - * Unlink one element from input request list, - * then free it and it's pdu. - */ -static void -free_one_request(isp, orp) - struct snmp_internal_session *isp; - struct request_list *orp; -{ - struct request_list *rp; - if(! orp) return; - if(isp->requests == orp){ - isp->requests = orp->next_request; /* unlink head */ - } - else{ - for(rp = isp->requests; rp; rp = rp->next_request){ - if(rp->next_request == orp){ - rp->next_request = orp->next_request; /* unlink element */ - break; - } - } - } - if (orp->pdu != NULL){ - snmp_free_pdu(orp->pdu); - } - free((char *)orp); -} -#endif /***/ -/* - * Free each element in the input request list. - */ -static void -free_request_list(rp) - struct request_list *rp; -{ - struct request_list *orp; - - while(rp){ - orp = rp; - rp = rp->next_request; - if (orp->pdu != NULL) - snmp_free_pdu(orp->pdu); - free((char *)orp); - } -} - -/* - * Close the input session. Frees all data allocated for the session, - * dequeues any pending requests, and closes any sockets allocated for - * the session. Returns 0 on error, 1 otherwise. - */ -int -snmp_close(session) - struct snmp_session *session; -{ - struct session_list *slp = NULL, *oslp = NULL; - - if (Sessions->session == session){ /* If first entry */ - slp = Sessions; - Sessions = slp->next; - } else { - for(slp = Sessions; slp; slp = slp->next){ - if (slp->session == session){ - if (oslp) /* if we found entry that points here */ - oslp->next = slp->next; /* link around this entry */ - break; - } - oslp = slp; - } - } - /* If we found the session, free all data associated with it */ - if (slp){ - if (slp->session->community != NULL) - free((char *)slp->session->community); - if(slp->session->peername != NULL) - free((char *)slp->session->peername); - free((char *)slp->session); - if (slp->internal->sd != -1) - close(slp->internal->sd); - free_request_list(slp->internal->requests); - free((char *)slp->internal); - free((char *)slp); - } else { - snmp_errno = SNMPERR_BAD_SESSION; - return 0; - } - return 1; -} - -/* - * Takes a session and a pdu and serializes the ASN PDU into the area - * pointed to by packet. out_length is the size of the data area available. - * Returns the length of the completed packet in out_length. If any errors - * occur, -1 is returned. If all goes well, 0 is returned. - */ -int -snmp_build(session, pdu, packet, out_length, is_agent) - struct snmp_session *session; - struct snmp_pdu *pdu; - u_char *packet; - int *out_length; - int is_agent; -{ - u_char buf[PACKET_LENGTH]; - u_char *cp; - struct variable_list *vp; - int length; - int totallength; - - length = *out_length; - cp = packet; - for(vp = pdu->variables; vp; vp = vp->next_variable){ - cp = snmp_build_var_op(cp, vp->name, &vp->name_length, vp->type, vp->val_len, (u_char *)vp->val.string, &length); - if (cp == NULL) - return -1; - } - totallength = cp - packet; - - length = PACKET_LENGTH; - cp = asn_build_header(buf, &length, (u_char)(ASN_SEQUENCE | ASN_CONSTRUCTOR), totallength); - if (cp == NULL) - return -1; - bcopy((char *)packet, (char *)cp, totallength); - totallength += cp - buf; - - length = *out_length; - if (pdu->command != TRP_REQ_MSG){ - /* request id */ - cp = asn_build_int(packet, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->reqid, sizeof(pdu->reqid)); - if (cp == NULL) - return -1; - /* error status */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->errstat, sizeof(pdu->errstat)); - if (cp == NULL) - return -1; - /* error index */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->errindex, sizeof(pdu->errindex)); - if (cp == NULL) - return -1; - } else { /* this is a trap message */ - /* enterprise */ - cp = asn_build_objid(packet, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_OBJECT_ID), - (oid *)pdu->enterprise, pdu->enterprise_length); - if (cp == NULL) - return -1; - /* agent-addr */ - cp = asn_build_string(cp, &length, (u_char)IPADDRESS, - (u_char *)&pdu->agent_addr.sin_addr.s_addr, sizeof(pdu->agent_addr.sin_addr.s_addr)); - if (cp == NULL) - return -1; - /* generic trap */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->trap_type, sizeof(pdu->trap_type)); - if (cp == NULL) - return -1; - /* specific trap */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->specific_type, sizeof(pdu->specific_type)); - if (cp == NULL) - return -1; - /* timestamp */ - cp = asn_build_int(cp, &length, (u_char)TIMETICKS, - (long *)&pdu->time, sizeof(pdu->time)); - if (cp == NULL) - return -1; - } - if (length < totallength) - return -1; - bcopy((char *)buf, (char *)cp, totallength); - totallength += cp - packet; - - length = PACKET_LENGTH; - cp = asn_build_header(buf, &length, (u_char)pdu->command, totallength); - if (cp == NULL) - return -1; - if (length < totallength) - return -1; - bcopy((char *)packet, (char *)cp, totallength); - totallength += cp - buf; - - length = *out_length; - - cp = snmp_auth_build( packet, &length, session, is_agent, totallength ); - if (cp == NULL) - return -1; - if ((*out_length - (cp - packet)) < totallength) - return -1; - bcopy((char *)buf, (char *)cp, totallength); - totallength += cp - packet; - *out_length = totallength; - - if( session->qoS & USEC_QOS_AUTH ) - md5Digest( packet, totallength, cp - (session->contextLen + 16), - cp - (session->contextLen + 16) ); - - return 0; -} - -/* - * Parses the packet received on the input session, and places the data into - * the input pdu. length is the length of the input packet. If any errors - * are encountered, -1 is returned. Otherwise, a 0 is returned. - */ -static int -snmp_parse(session, pdu, data, length) - struct snmp_session *session; - struct snmp_pdu *pdu; - u_char *data; - int length; -{ - u_char msg_type; - u_char type; - u_char *var_val; - long version; - int len, four; - u_char community[256]; - int community_length = 256; - struct variable_list *vp = 0; - oid objid[MAX_NAME_LEN], *op; - u_char *origdata = data; - int origlength = length; - int ret = 0; - u_char *save_data; - - /* authenticates message and returns length if valid */ - data = snmp_auth_parse(data, &length, community, &community_length, &version); - if (data == NULL) - return -1; - - if( version != SNMP_VERSION_1 && version != SNMP_VERSION_2C && version != SNMP_VERSION_2 ) { - fprintf(stderr, "Wrong version: %ld\n", version); - return -1; - } - - save_data = data; - - data = asn_parse_header(data, &length, &msg_type); - if (data == NULL) - return -1; - pdu->command = msg_type; - - if( session->authenticator ) { - ret = session->authenticator( origdata, origlength, save_data - community_length, - community_length, session, pdu ); - if( ret < 0 ) return ret; - } - - if (pdu->command != TRP_REQ_MSG){ - data = asn_parse_int(data, &length, &type, (long *)&pdu->reqid, sizeof(pdu->reqid)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->errstat, sizeof(pdu->errstat)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->errindex, sizeof(pdu->errindex)); - if (data == NULL) - return -1; - } else { - pdu->enterprise_length = MAX_NAME_LEN; - data = asn_parse_objid(data, &length, &type, objid, &pdu->enterprise_length); - if (data == NULL) - return -1; - pdu->enterprise = (oid *)calloc(1, pdu->enterprise_length * sizeof(oid)); - bcopy((char *)objid, (char *)pdu->enterprise, pdu->enterprise_length * sizeof(oid)); - - four = 4; - data = asn_parse_string(data, &length, &type, (u_char *)&pdu->agent_addr.sin_addr.s_addr, &four); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->trap_type, sizeof(pdu->trap_type)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->specific_type, sizeof(pdu->specific_type)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->time, sizeof(pdu->time)); - if (data == NULL) - return -1; - } - data = asn_parse_header(data, &length, &type); - if (data == NULL) - return -1; - if (type != (u_char)(ASN_SEQUENCE | ASN_CONSTRUCTOR)) - return -1; - while((int)length > 0){ - if (pdu->variables == NULL){ - pdu->variables = vp = (struct variable_list *)calloc(1, sizeof(struct variable_list)); - } else { - vp->next_variable = (struct variable_list *)calloc(1, sizeof(struct variable_list)); - vp = vp->next_variable; - } - vp->next_variable = NULL; - vp->val.string = NULL; - vp->name = NULL; - vp->name_length = MAX_NAME_LEN; - data = snmp_parse_var_op(data, objid, &vp->name_length, &vp->type, &vp->val_len, &var_val, (int *)&length); - if (data == NULL) - return -1; - op = (oid *)calloc(1, (unsigned)vp->name_length * sizeof(oid)); - bcopy((char *)objid, (char *)op, vp->name_length * sizeof(oid)); - vp->name = op; - - len = PACKET_LENGTH; - switch((short)vp->type){ - case ASN_INTEGER: - vp->val.integer = (long *)calloc(1, sizeof(long)); - vp->val_len = sizeof(long); - asn_parse_int(var_val, &len, &vp->type, (long *)vp->val.integer, sizeof(vp->val.integer)); - break; - case COUNTER: - case GAUGE: - case TIMETICKS: - case UINTEGER: - vp->val.integer = (long *)calloc(1, sizeof(unsigned long)); - vp->val_len = sizeof(unsigned long); - asn_parse_unsigned_int(var_val, &len, &vp->type, (unsigned long *)vp->val.integer, sizeof(vp->val.integer)); - break; - case COUNTER64: - vp->val.counter64 = (struct counter64 *)calloc(1, sizeof(struct counter64) ); - vp->val_len = sizeof(struct counter64); - asn_parse_unsigned_int64(var_val, &len, &vp->type, - (struct counter64 *)vp->val.counter64, - sizeof(*vp->val.counter64)); - break; - case ASN_OCTET_STR: - case IPADDRESS: - case OPAQUE: - case NSAP: - vp->val.string = (u_char *)calloc(1, (unsigned)vp->val_len); - asn_parse_string(var_val, &len, &vp->type, vp->val.string, &vp->val_len); - break; - case ASN_OBJECT_ID: - vp->val_len = MAX_NAME_LEN; - asn_parse_objid(var_val, &len, &vp->type, objid, &vp->val_len); - vp->val_len *= sizeof(oid); - vp->val.objid = (oid *)calloc(1, (unsigned)vp->val_len); - bcopy((char *)objid, (char *)vp->val.objid, vp->val_len); - break; - case SNMP_NOSUCHOBJECT: - case SNMP_NOSUCHINSTANCE: - case SNMP_ENDOFMIBVIEW: - case ASN_NULL: - break; - default: - fprintf(stderr, "bad type returned (%x)\n", vp->type); - break; - } - } - return ret; -} - -/* - * Sends the input pdu on the session after calling snmp_build to create - * a serialized packet. If necessary, set some of the pdu data from the - * session defaults. Add a request corresponding to this pdu to the list - * of outstanding requests on this session, then send the pdu. - * Returns the request id of the generated packet if applicable, otherwise 1. - * On any error, 0 is returned. - * The pdu is freed by snmp_send() unless a failure occured. - */ -int -snmp_send(session, pdu) - struct snmp_session *session; - struct snmp_pdu *pdu; -{ - struct session_list *slp; - struct snmp_internal_session *isp = NULL; - u_char packet[PACKET_LENGTH]; - int length = PACKET_LENGTH; - struct request_list *rp; - struct timeval tv; - - for(slp = Sessions; slp; slp = slp->next){ - if (slp->session == session){ - isp = slp->internal; - break; - } - } - - if (! pdu) { - snmp_errno = SNMPERR_GENERR; - return 0; - } - - if (isp == NULL){ - snmp_errno = SNMPERR_BAD_SESSION; - return 0; - } - if (pdu->command == GET_REQ_MSG || pdu->command == GETNEXT_REQ_MSG - || pdu->command == GET_RSP_MSG || pdu->command == SET_REQ_MSG - || pdu->command == GETBULK_REQ_MSG ){ - if (pdu->reqid == SNMP_DEFAULT_REQID) - pdu->reqid = ++Reqid; - if (pdu->errstat == SNMP_DEFAULT_ERRSTAT) - pdu->errstat = 0; - if (pdu->errindex == SNMP_DEFAULT_ERRINDEX) - pdu->errindex = 0; - } else { - /* fill in trap defaults */ - pdu->reqid = 1; /* give a bogus non-error reqid for traps */ - if (pdu->enterprise_length == SNMP_DEFAULT_ENTERPRISE_LENGTH){ - pdu->enterprise = (oid *)calloc(1, sizeof(DEFAULT_ENTERPRISE)); - bcopy((char *)DEFAULT_ENTERPRISE, (char *)pdu->enterprise, sizeof(DEFAULT_ENTERPRISE)); - pdu->enterprise_length = sizeof(DEFAULT_ENTERPRISE)/sizeof(oid); - } - if (pdu->time == SNMP_DEFAULT_TIME) - pdu->time = DEFAULT_TIME; - } - if (pdu->address.sin_addr.s_addr == SNMP_DEFAULT_ADDRESS){ - if (isp->addr.sin_addr.s_addr != SNMP_DEFAULT_ADDRESS){ - bcopy((char *)&isp->addr, (char *)&pdu->address, sizeof(pdu->address)); - } else { - fprintf(stderr, "No remote IP address specified\n"); - snmp_errno = SNMPERR_BAD_ADDRESS; - return 0; - } - } - - - if (snmp_build(session, pdu, packet, &length, 0) < 0){ - fprintf(stderr, "Error building packet\n"); - snmp_errno = SNMPERR_GENERR; - return 0; - } -#if 1 /***/ - if (snmp_dump_packet){ - snmp_print_packet(packet, length, pdu->address, 1); - } -#endif /***/ - - gettimeofday(&tv, (struct timezone *)0); - if (sendto(isp->sd, (char *)packet, length, 0, (struct sockaddr *)&pdu->address, sizeof(pdu->address)) < 0){ - perror("sendto"); - snmp_errno = SNMPERR_GENERR; - return 0; - } - if (pdu->command == GET_REQ_MSG || pdu->command == GETNEXT_REQ_MSG - || pdu->command == SET_REQ_MSG || pdu->command == GETBULK_REQ_MSG ){ - /* set up to expect a response */ - rp = (struct request_list *)calloc(1, sizeof(struct request_list)); -#if 1 /***/ - if(! rp){ - fprintf(stderr, "Out of memory!\n"); - snmp_errno = SNMPERR_GENERR; - return 0; - } -#endif /***/ - rp->next_request = isp->requests; - isp->requests = rp; - rp->pdu = pdu; - rp->request_id = pdu->reqid; - - rp->retries = 1; - rp->timeout = session->timeout; - rp->time = tv; - tv.tv_usec += rp->timeout; - tv.tv_sec += tv.tv_usec / 1000000L; - tv.tv_usec %= 1000000L; - rp->expire = tv; -#if DEBUG_SNMPTRACE - snmp_print_trace(slp, rp, TRACE_SEND); -#endif - } - return pdu->reqid; -} - -/* - * Frees the pdu and any malloc'd data associated with it. - */ -void -snmp_free_pdu(struct snmp_pdu * pdu) -{ - struct variable_list *vp, *ovp; - - if (! pdu) - return; - - vp = pdu->variables; - while(vp){ - if (vp->name) { - free((char *)vp->name); - } - if (vp->val.string) { - free((char *)vp->val.string); - } - ovp = vp; - vp = vp->next_variable; - free((char *)ovp); - } - if (pdu->enterprise) { - free((char *)pdu->enterprise); - } - free((char *)pdu); -} - - -/* - * Checks to see if any of the fd's set in the fdset belong to - * snmp. Each socket with it's fd set has a packet read from it - * and snmp_parse is called on the packet received. The resulting pdu - * is passed to the callback routine for that session. If the callback - * routine returns successfully, the pdu and it's request are deleted. - */ -void -snmp_read(fdset) - fd_set *fdset; -{ - struct session_list *slp; - struct snmp_session *sp; - struct snmp_internal_session *isp; - u_char packet[PACKET_LENGTH]; - struct sockaddr_in from; - ssize_t length, fromlength; - struct snmp_pdu *pdu; - struct request_list *rp /**, *orp **/ ; - - for(slp = Sessions; slp; slp = slp->next){ - if (FD_ISSET(slp->internal->sd, fdset)){ - sp = slp->session; - isp = slp->internal; - fromlength = sizeof(from); - length = recvfrom(isp->sd, (char *)packet, PACKET_LENGTH, 0, (struct sockaddr *)&from, &fromlength); - if (length == -1) { - perror("recvfrom"); - return; - } -#if 1 /***/ - if (snmp_dump_packet){ - snmp_print_packet(packet, length, from, 0); - } - pdu = (struct snmp_pdu *)calloc(1, sizeof(struct snmp_pdu)); - - if(! pdu){ - fprintf(stderr, "Out of memory!\n"); - snmp_errno = SNMPERR_GENERR; - return; - } -#endif /***/ - - pdu->address = from; - pdu->reqid = 0; - pdu->variables = NULL; - pdu->enterprise = NULL; - pdu->enterprise_length = 0; - if (snmp_parse(sp, pdu, packet, length) < 0){ - fprintf(stderr, "Mangled packet\n"); - snmp_free_pdu(pdu); - return; - } - - if (pdu->command == GET_RSP_MSG || pdu->command == REPORT_MSG){ -#if 1 /***/ /* bug fix: illegal re-use of rp killed some requests */ - struct request_list *rp_next= 0; - for(rp = isp->requests; rp; rp = rp_next){ - rp_next = rp->next_request; - if (rp->request_id == pdu->reqid){ -#if DEBUG_SNMPTRACE - snmp_print_trace(slp, rp, TRACE_RECV); -#endif - if (sp->callback(RECEIVED_MESSAGE, sp, pdu->reqid, pdu, sp->callback_magic) == 1){ - /* successful, so delete request */ - free_one_request(isp, rp); - break; /* no more request with the same reqid */ - } - } - } -#endif /***/ - } else if (pdu->command == GET_REQ_MSG - || pdu->command == GETNEXT_REQ_MSG - || pdu->command == GETBULK_REQ_MSG - || pdu->command == TRP_REQ_MSG || pdu->command == SET_REQ_MSG){ -#if DEBUG_SNMPTRACE - snmp_print_trace(slp, NULL, TRACE_RECV); -#endif - sp->callback(RECEIVED_MESSAGE, sp, pdu->reqid, pdu, sp->callback_magic); - } - snmp_free_pdu(pdu); - } - } -} - -/* - * Returns info about what snmp requires from a select statement. - * numfds is the number of fds in the list that are significant. - * All file descriptors opened for SNMP are OR'd into the fdset. - * If activity occurs on any of these file descriptors, snmp_read - * should be called with that file descriptor set - * - * The timeout is the latest time that SNMP can wait for a timeout. The - * select should be done with the minimum time between timeout and any other - * timeouts necessary. This should be checked upon each invocation of select. - * If a timeout is received, snmp_timeout should be called to check if the - * timeout was for SNMP. (snmp_timeout is idempotent) - * - * Block is 1 if the select is requested to block indefinitely, rather - * than time out. If block is input as 1, the timeout value will be - * treated as undefined, but it must be available for setting in - * snmp_select_info. On return, if block is true, the value of - * timeout will be undefined. - * - * snmp_select_info returns the number of open sockets. (i.e. The - * number of sessions open) - */ -int -snmp_select_info(numfds, fdset, timeout, block) - int *numfds; - fd_set *fdset; - struct timeval *timeout; - int *block; /* should the select block until input arrives (i.e. no input) */ -{ - struct session_list *slp; - struct snmp_internal_session *isp; - struct request_list *rp; - struct timeval now, earliest; - int active = 0, requests = 0; - - timerclear(&earliest); - /* - * For each request outstanding, add it's socket to the fdset, - * and if it is the earliest timeout to expire, mark it as lowest. - */ - for(slp = Sessions; slp; slp = slp->next){ - active++; - isp = slp->internal; - if ((isp->sd + 1) > *numfds) - *numfds = (isp->sd + 1); - FD_SET(isp->sd, fdset); - if (isp->requests){ - /* found another session with outstanding requests */ - requests++; - for(rp = isp->requests; rp; rp = rp->next_request){ - if (!timerisset(&earliest) || timercmp(&rp->expire, &earliest, <)) - earliest = rp->expire; - } - } - } - if (requests == 0) /* if none are active, skip arithmetic */ - return active; - - /* - * Now find out how much time until the earliest timeout. This - * transforms earliest from an absolute time into a delta time, the - * time left until the select should timeout. - */ - gettimeofday(&now, (struct timezone *)0); - earliest.tv_sec--; /* adjust time to make arithmetic easier */ - earliest.tv_usec += 1000000L; - earliest.tv_sec -= now.tv_sec; - earliest.tv_usec -= now.tv_usec; - while (earliest.tv_usec >= 1000000L){ - earliest.tv_usec -= 1000000L; - earliest.tv_sec += 1; - } - if (earliest.tv_sec < 0){ - earliest.tv_sec = 0; - earliest.tv_usec = 0; - } - - /* if it was blocking before or our delta time is less, reset timeout */ - if (*block == 1 || timercmp(&earliest, timeout, <)){ - *timeout = earliest; - *block = 0; - } - return active; -} - -/* - * snmp_timeout should be called whenever the timeout from - * snmp_select_info expires, but it is idempotent, so snmp_timeout can - * be polled (probably a cpu expensive proposition). snmp_timeout - * checks to see if any of the sessions have an outstanding request - * that has timed out. If it finds one (or more), and that pdu has - * more retries available, a new packet is formed from the pdu and is - * resent. If there are no more retries available, the callback for - * the session is used to alert the user of the timeout. - */ -void -snmp_timeout() -{ - struct session_list *slp; - struct snmp_session *sp; - struct snmp_internal_session *isp; -#if 1 /***/ /* replacing freeme by simpler and safer rp_next*/ - struct request_list *rp, *rp_next = 0; -#endif /***/ - struct timeval now; - - gettimeofday(&now, (struct timezone *)0); - /* - * For each request outstanding, check to see if it has expired. - */ - for(slp = Sessions; slp; slp = slp->next){ - sp = slp->session; - isp = slp->internal; -#if 1 /***/ /* simplification */ - for(rp = isp->requests; rp; rp = rp_next){ - rp_next = rp->next_request; - if (timercmp(&rp->expire, &now, <)){ - /* this timer has expired */ - if (rp->retries >= sp->retries){ -#if DEBUG_SNMPTRACE - snmp_print_trace(slp, rp, TRACE_TIMEOUT); -#endif - /* No more chances, delete this entry */ - sp->callback(TIMED_OUT, sp, rp->pdu->reqid, rp->pdu, sp->callback_magic); - free_one_request(isp, rp); - continue; -#endif /***/ - } else { - u_char packet[PACKET_LENGTH]; - int length = PACKET_LENGTH; - struct timeval tv; - - /* retransmit this pdu */ - rp->retries++; - rp->timeout <<= 1; - if (snmp_build(sp, rp->pdu, packet, &length, 0) < 0){ - fprintf(stderr, "Error building packet\n"); - } -#if 1 /***/ - if (snmp_dump_packet) { - snmp_print_packet(packet, length, rp->pdu->address, 1); - } -#endif/***/ mplification */by simpler and safer rp_next*/n s */ replace... - */ - * ÿ¯ùsnmplib/snmp_api.cc.hÿ°…<Ðlib/snmp_api.c~~ñÿ±<ðÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±«=ÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²=0ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²Š=Pÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ³ -=pÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³‚ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×Áÿ³ùÿ´=ø%D(ÿ´_=à\BØÿ´©=˜4BØÿ´ø=ÈHBØÿµB>ÿµ]ÿµmÿµzÿµ >(ÿµ·ÿµÉÿµÖÿµï>@ÿ¶ÿ¶ ÿ¶4ÿ¶Pÿ¶rÿ¶~ÿ¶ˆ0ÿ¶Ÿ‚àÿ¶·ÿ¶Ù4¨ÿ·ÿ·#ÿ·/ÿ·>>Xÿ·V3/usr/people/wessels/.indent.proÿ¯èÿ¯ùÿ° ÿ°ÿ°.ÿ°?ÿ°Mÿ°[ÿ°pÿ°…ÿ°•ÿ°£ÿ°²ÿ°Åÿ°Ûÿ°ñÿ± -ÿ±ÿ±2ÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±™ÿ±«ÿ±ºÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²ÿ²ÿ²2ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²ÿ²Šÿ²™ÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ²öÿ³ -ÿ³ ÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³sÿ³‚ÿ³‘ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×ÿ³çÿ³ùÿ´ÿ´ÿ´ÿ´)ÿ´3ÿ´Cÿ´Oÿ´_ÿ´kÿ´tÿ´ÿ´ÿ´Ÿÿ´©ÿ´·ÿ´Åÿ´Òÿ´Ýÿ´íÿ´øÿµÿµÿµÿµ)ÿµ7ÿµBÿµMÿµ]ÿµmÿµzÿµ‰ÿµ ÿµ«ÿµ·ÿµÉÿµÖÿµâÿµïÿ¶ÿ¶ÿ¶ ÿ¶4ÿ¶?ÿ¶Pÿ¶bÿ¶rÿ¶~ÿ¶ˆÿ¶”ÿ¶Ÿÿ¶«ÿ¶·ÿ¶Éÿ¶Ùÿ¶íÿ·ÿ·ÿ·#ÿ·/ÿ·>ÿ·Lÿ·Vÿ·fÿ·q@ 64)); - break; - case ASN_OCTET_STR: - case IPADDRESS: - case OPAQUE: - case NSAP: - vp->val.string = (u_char *)calloc(1, (unsigned)vp->val_len); - asn_parse_string(var_val, &len, &vp->type, vp->val.string, &vp->val_len); - break; - case ASN_OBJECT_ID: - vp->val_len = MAX_NAME_LEN; - asn_parse_objid(var_val, &len, &vp->type, objid, &vp->val_len); - vp->val_len *= sizeof(oid); - vp->val.objid = (oid *)calloc(1, (unsigned)vp->val_len); - bcopy((char *)objid, (char *)vp->val.objid, vp->val_len); - break; - case SNMP_NOSUCHOBJECT: - case SNMP_NOSUCHINSTANCE: - case SNMP_ENDOFMIBVIEW: - case ASN_NULL: - break; - default: - fprintf(stderr, "bad type returned (%x)\n", vp->type); - break; - } - } - return ret; -} - -/* - * Sends the input pdu on the session after calling snmp_build to create - * a serialized packet. If necessary, set some of the pdu data from the - * session defaults. Add a request corresponding to this pdu to the list - * of outstanding requests on this session, then send the pdu. - * Returns the request id of the generated packet if applicable, otherwise 1. - * On any error, 0 is returned. - * The pdu is freed by snmp_send() unless a failure occured. - */ -int -snmp_send(session, pdu) - struct snmp_session *session; - struct snmp_pdu *pdu; -{ - struct session_list *slp; - struct snmp_internal_session *isp = NULL; - u_char packet[PACKET_LENGTH]; - int length = PACKET_LENGTH; - struct request_list *rp; - struct timeval tv; - - for(slp = Sessions; slp; slp = slp->next){ - if (slp->session == session){ - isp = slp->internal; - break; - } - } - - if (! pdu) { - snmp_errno = SNMPERR_GENERR; - return 0; - } - - if (isp == NULL){ - snmp_errno = SNMPERR_BAD_SESSION; - return 0; - } - if (pdu->command == GET_REQ_MSG || pdu->command == GETNEXT_REQ_MSG - || pdu->command == GET_RSP_MSG || pdu->command == SET_REQ_MSG - || pdu->command == GETBULK_REQ_MSG ){ - if (pdu->reqid == SNMP_DEFAULT_REQID) - pdu->reqid = ++Reqid; - if (pdu->errstat == SNMP_DEFAULT_ERRSTAT) - pdu->errstat = 0; - if (pdu->errindex == SNMP_DEFAULT_ERRINDEX) - pdu->errindex = 0; - } else { - /* fill in trap defaults */ - pdu->reqid = 1; /* give a bogus non-error reqid for traps */ - if (pdu->enterprise_length == SNMP_DEFAULT_ENTERPRISE_LENGTH){ - pdu->enterprise = (oid *)calloc(1, sizeof(DEFAULT_ENTERPRISE)); - bcopy((char *)DEFAULT_ENTERPRISE, (char *)pdu->enterprise, sizeof(DEFAULT_ENTERPRISE)); - pdu->enterprise_length = sizeof(DEFAULT_ENTERPRISE)/sizeof(oid); - } - if (pdu->time == SNMP_DEFAULT_TIME) - pdu->time = DEFAULT_TIME; - } - if (pdu->address.sin_addr.s_addr == SNMP_DEFAULT_ADDRESS){ - if (isp->addr.sin_addr.s_addr != SNMP_DEFAULT_ADDRESS){ - bcopy((char *)&isp->addr, (char *)&pdu->address, sizeof(pdu->address)); - } else { - fprintf(stderr, "No remote IP address specified\n"); - snmp_errno = SNMPERR_BAD_ADDRESS; - return 0; - } - } - - - if (snmp_build(session, pdu, packet, &length, 0) < 0){ - fprintf(stderr, "Error building packet\n"); - snmp_errno = SNMPERR_GENERR; - return 0; - } -#if 1 /***/ - if (snmp_dump_packet){ - snmp_print_packet(packet, length, pdu->address, 1); - } -#endif /***/ - - gettimeofday(&tv, (struct timezone *)0); - if (sendto(isp->sd, (char *)packet, length, 0, (struct sockaddr *)&pdu->address, sizeof(pdu->address)) < 0){ - perror("sendto"); - snmp_errno = SNMPERR_GENERR; - return 0; - } - if (pdu->command == GET_REQ_MSG || pdu->command == GETNEXT_REQ_MSG - || pdu->command == SET_REQ_MSG || pdu->command == GETBULK_REQ_MSG ){ - /* set up to expect a response */ - rp = (struct request_list *)calloc(1, sizeof(struct request_list)); -#if 1 /***/ - if(! rp){ - fprintf(stderr, "Out of memory!\n"); - snmp_errno = SNMPERR_GENERR; - return 0; - } -#endif /***/ - rp->next_request = isp->requests; - isp->requests = rp; - rp->pdu = pdu; - rp->request_id = pdu->reqid; - - rp->retries = 1; - rp->timeout = session->timeout; - rp->time = tv; - tv.tv_usec += rp->timeout; - tv.tv_sec += tv.tv_usec / 1000000L; - tv.tv_usec %= 1000000L; - rp->expire = tv; -#if DEBUG_SNMPTRACE - snmp_print_trace(slp, rp, TRACE_SEND); -#endif - } - return pdu->reqid; -} - -/* - * Frees the pdu and any malloc'd data associated with it. - */ -void -snmp_free_pdu(struct snmp_pdu * pdu) -{ - struct variable_list *vp, *ovp; - - if (! pdu) - return; - - vp = pdu->variables; - while(vp){ - if (vp->name) { - free((char *)vp->name); - } - if (vp->val.string) { - free((char *)vp->val.string); - } - ovp = vp; - vp = vp->next_variable; - free((char *)ovp); - } - if (pdu->enterprise) { - free((char *)pdu->enterprise); - } - free((char *)pdu); -} - - -/* - * Checks to see if any of the fd's set in the fdset belong to - * snmp. Each socket with it's fd set has a packet read from it - * and snmp_parse is called on the packet received. The resulting pdu - * is passed to the callback routine for that session. If the callback - * routine returns successfully, the pdu and it's request are deleted. - */ -void -snmp_read(fdset) - fd_set *fdset; -{ - struct session_list *slp; - struct snmp_session *sp; - struct snmp_internal_session *isp; - u_char packet[PACKET_LENGTH]; - struct sockaddr_in from; - ssize_t length, fromlength; - struct snmp_pdu *pdu; - struct request_list *rp /**, *orp **/ ; - - for(slp = Sessions; slp; slp = slp->next){ - if (FD_ISSET(slp->internal->sd, fdset)){ - sp = slp->session; - isp = slp->internal; - fromlength = sizeof(from); - length = recvfrom(isp->sd, (char *)packet, PACKET_LENGTH, 0, (struct sockaddr *)&from, &fromlength); - if (length == -1) { - perror("recvfrom"); - return; - } -#if 1 /***/ - if (snmp_dump_packet){ - snmp_print_packet(packet, length, from, 0); - } - pdu = (struct snmp_pdu *)calloc(1, sizeof(struct snmp_pdu)); - - if(! pdu){ - fprintf(stderr, "Out of memory!\n"); - snmp_errno = SNMPERR_GENERR; - return; - } -#endif /***/ - - pdu->address = from; - pdu->reqid = 0; - pdu->variables = NULL; - pdu->enterprise = NULL; - pdu->enterprise_length = 0; - if (snmp_parse(sp, pdu, packet, length) < 0){ - fprintf(stderr, "Mangled packet\n"); - snmp_free_pdu(pdu); - return; - } - - if (pdu->command == GET_RSP_MSG || pdu->command == REPORT_MSG){ -#if 1 /***/ /* bug fix: illegal re-use of rp killed some requests */ - struct request_list *rp_next= 0; - for(rp = isp->requests; rp; rp = rp_next){ - rp_next = rp->next_request; - if (rp->request_id == pdu->reqid){ -#if DEBUG_SNMPTRACE - snmp_print_trace(slp, rp, TRACE_RECV); -#endif - if (sp->callback(RECEIVED_MESSAGE, sp, pdu->reqid, pdu, sp->callback_magic) == 1){ - /* successful, so delete request */ - free_one_request(isp, rp); - break; /* no more request with the same reqid */ - } - } - } -#endif /***/ - } else if (pdu->command == GET_REQ_MSG - || pdu->command == GETNEXT_REQ_MSG - || pdu->command == GETBULK_REQ_MSG - || pdu->command == TRP_REQ_MSG || pdu->command == SET_REQ_MSG){ -#if DEBUG_SNMPTRACE - snmp_print_trace(slp, NULL, TRACE_RECV); -#endif - sp->callback(RECEIVED_MESSAGE, sp, pdu->reqid, pdu, sp->callback_magic); - } - snmp_free_pdu(pdu); - } - } -} - -/* - * Returns info about what snmp requires from a select statement. - * numfds is the number of fds in the list that are significant. - * All file descriptors opened for SNMP are OR'd into the fdset. - * If activity occurs on any of these file descriptors, snmp_read - * should be called with that file descriptor set - * - * The timeout is the latest time that SNMP can wait for a timeout. The - * select should be done with the minimum time between timeout and any other - * timeouts necessary. This should be checked upon each invocation of select. - * If a timeout is received, snmp_timeout should be called to check if the - * timeout was for SNMP. (snmp_timeout is idempotent) - * - * Block is 1 if the select is requested to block indefinitely, rather - * than time out. If block is input as 1, the timeout value will be - * treated as undefined, but it must be available for setting in - * snmp_select_info. On return, if block is true, the value of - * timeout will be undefined. - * - * snmp_select_info returns the number of open sockets. (i.e. The - * number of sessions open) - */ -int -snmp_select_info(numfds, fdset, timeout, block) - int *numfds; - fd_set *fdset; - struct timeval *timeout; - int *block; /* should the select block until input arrives (i.e. no input) */ -{ - struct session_list *slp; - struct snmp_internal_session *isp; - struct request_list *rp; - struct timeval now, earliest; - int active = 0, requests = 0; - - timerclear(&earliest); - /* - * For each request outstanding, add it's socket to the fdset, - * and if it is the earliest timeout to expire, mark it as lowest. - */ - for(slp = Sessions; slp; slp = slp->next){ - active++; - isp = slp->internal; - if ((isp->sd + 1) > *numfds) - *numfds = (isp->sd + 1); - FD_SET(isp->sd, fdset); - if (isp->requests){ - /* found another session with outstanding requests */ - requests++; - for(rp = isp->requests; rp; rp = rp->next_request){ - if (!timerisset(&earliest) || timercmp(&rp->expire, &earliest, <)) - earliest = rp->expire; - } - } - } - if (requests == 0) /* if none are active, skip arithmetic */ - return active; - - /* - * Now find out how much time until the earliest timeout. This - * transforms earliest from an absolute time into a delta time, the - * time left until the select should timeout. - */ - gettimeofday(&now, (struct timezone *)0); - earliest.tv_sec--; /* adjust time to make arithmetic easier */ - earliest.tv_usec += 1000000L; - earliest.tv_sec -= now.tv_sec; - earliest.tv_usec -= now.tv_usec; - while (earliest.tv_usec >= 1000000L){ - earliest.tv_usec -= 1000000L; - earliest.tv_sec += 1; - } - if (earliest.tv_sec < 0){ - earliest.tv_sec = 0; - earliest.tv_usec = 0; - } - - /* if it was blocking before or our delta time is less, reset timeout */ - if (*block == 1 || timercmp(&earliest, timeout, <)){ - *timeout = earliest; - *block = 0; - } - return active; -} - -/* - * snmp_timeout should be called whenever the timeout from - * snmp_select_info expires, but it is idempotent, so snmp_timeout can - * be polled (probably a cpu expensive proposition). snmp_timeout - * checks to see if any of the sessions have an outstanding request - * that has timed out. If it finds one (or more), and that pdu has - * more retries available, a new packet is formed from the pdu and is - * resent. If there are no more retries available, the callback for - * the session is used to alert the user of the timeout. - */ -void -snmp_timeout() -{ - struct session_list *slp; - struct snmp_session *sp; - struct snmp_internal_session *isp; -#if 1 /***/ /* replacing freeme by simpler and safer rp_next*/ - struct request_list *rp, *rp_next = 0; -#endif /***/ - struct timeval now; - - gettimeofday(&now, (struct timezone *)0); - /* - * For each request outstanding, check to see if it has expired. - */ - for(slp = Sessions; slp; slp = slp->next){ - sp = slp->session; - isp = slp->internal; -#if 1 /***/ /* simplification */ - for(rp = isp->requests; rp; rp = rp_next){ - rp_next = rp->next_request; - if (timercmp(&rp->expire, &now, <)){ - /* this timer has expired */ - if (rp->retries >= sp->retries){ -#if DEBUG_SNMPTRACE - snmp_print_trace(slp, rp, TRACE_TIMEOUT); -#endif - /* No more chances, delete this entry */ - sp->callback(TIMED_OUT, sp, rp->pdu->reqid, rp->pdu, sp->callback_magic); - free_one_request(isp, rp); - continue; -#endif /***/ - } else { - u_char packet[PACKET_LENGTH]; - int length = PACKET_LENGTH; - struct timeval tv; - - /* retransmit this pdu */ - rp->retries++; - rp->timeout <<= 1; - if (snmp_build(sp, rp->pdu, packet, &length, 0) < 0){ - fprintf(stderr, "Error building packet\n"); - } -#if 1 /***/ - if (snmp_dump_packet) { - snmp_print_packet(packet, length, rp->pdu->address, 1); - } - If any errors - * are encountered, -1 is returned. Otherwise, a 0 is returned. - */ -static int -snmp_parse(session, pdu, data, length) - struct snmp_session *session; - struct snmp_pdu *pdu; - u_char *data; - int length; -{ - u_char msg_type; - u_char type; - u_char *var_val; - long version; - int len, four; - u_char community[256]; - int community_length = 256; - struct variable_list *vp = 0; - oid objid[MAX_NAME_LEN], *op; - u_char *origdata = data; - int origlength = length; - int ret = 0; - u_char *save_data; - - /* authenticates message and returns length if valid */ - data = snmp_auth_parse(data, &length, community, &community_length, &version); - if (data == NULL) - return -1; - - if( version != SNMP_VERSION_1 && version != SNMP_VERSION_2C && version != SNMP_VERSION_2 ) { - fprintf(stderr, "Wrong version: %ld\n", version); - return -1; - } - - save_data = data; - - data = asn_parse_header(data, &length, &msg_type); - if (data == NULL) - return -1; - pdu->command = msg_type; - - if( session->authenticator ) { - ret = session->authenticator( origdata, origlength, save_data - community_length, - community_length, session, pdu ); - if( ret < 0 ) return ret; - } - - if (pdu->command != TRP_REQ_MSG){ - data = asn_parse_int(data, &length, &type, (long *)&pdu->reqid, sizeof(pdu->reqid)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->errstat, sizeof(pdu->errstat)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->errindex, sizeof(pdu->errindex)); - if (data == NULL) - return -1; - } else { - pdu->enterprise_length = MAX_NAME_LEN; - data = asn_parse_objid(data, &length, &type, objid, &pdu->enterprise_length); - if (data == NULL) - return -1; - pdu->enterprise = (oid *)calloc(1, pdu->enterprise_length * sizeof(oid)); - bcopy((char *)objid, (char *)pdu->enterprise, pdu->enterprise_length * sizeof(oid)); - - four = 4; - data = asn_parse_string(data, &length, &type, (u_char *)&pdu->agent_addr.sin_addr.s_addr, &four); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->trap_type, sizeof(pdu->trap_type)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->specific_type, sizeof(pdu->specific_type)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->time, sizeof(pdu->time)); - if (data == NULL) - return -1; - } - data = asn_parse_header(data, &length, &type); - if (data == NULL) - return -1; - if (type != (u_char)(ASN_SEQUENCE | ASN_CONSTRUCTOR)) - return -1; - while((int)length > 0){ - if (pdu->variables == NULL){ - pdu->variables = vp = (struct variable_list *)calloc(1, sizeof(struct variable_list)); - } else { - vp->next_variable = (struct variable_list *)calloc(1, sizeof(struct variable_list)); - vp = vp->next_variable; - } - vp->next_variable = NULL; - vp->val.string = NULL; - vp->name = NULL; - vp->name_length = MAX_NAME_LEN; - data = snmp_parse_var_op(data, objid, &vp->name_length, &vp->type, &vp->val_len, &var_val, (int *)&length); - if (data == NULL) - return -1; - op = (oid *)calloc(1, (unsigned)vp->name_length * sizeof(oid)); - bcopy((char *)objid, (char *)op, vp->name_length * sizeof(oid)); - vp->name = op; - - len = PACKET_LENGTH; - switch((short)vp->type){ - case ASN_INTEGER: - vp->val.integer = (long *)calloc(1, sizeof(long)); - vp->val_len = sizeof(long); - asn_parse_int(var_val, &len, &vp->type, (long *)vp->val.integer, sizeof(vp->val.integer)); - break; - case COUNTER: - case GAUGE: - case TIMETICKS: - case UINTEGER: - vp->val.integer = (long *)calloc(1, sizeof(unsigned long)); - vp->val_len = sizeof(unsigned long); - asn_parse_unsigned_int(var_val, &len, &vp->type, (unsigned long *)vp->val.integer, sizeof(vp->val.integer)); - break; - case COUNTER64: - vp->val.counter64 = (struct counter64 *)calloc(1, sizeof(struct counter64) ); - vp->val_len = sizeof(struct counter64); - asn_parse_unsigned_int64(var_val, &len, &vp->type, - (struct counter64 *)vp->val.counter64, - sizeof(*vp->val.counterBÐ+= m -È /* */ B>XNMPTíˆ */cfor testing purposes */e key! replace... - */ - * ÿ¯ùsnmplib/snmp_api.cc.hÿ°…<Ðlib/snmp_api.c~~ñÿ±<ðÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±«=ÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²=0ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²Š=Pÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ³ -=pÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³‚ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×Áÿ³ùÿ´=ø%D(ÿ´_=à\BØÿ´©=˜4BØÿ´ø=ÈHBØÿµB>ÿµ]ÿµmÿµzÿµ >(ÿµ·ÿµÉÿµÖÿµï>@ÿ¶ÿ¶ ÿ¶4ÿ¶Pÿ¶rÿ¶~ÿ¶ˆ0ÿ¶Ÿ4¨ÿ¶·ÿ¶Ù‰èÿ·ÿ·#ÿ·/ÿ·>>Xÿ·V3/usr/people/wessels/.indent.proÿ¯èÿ¯ùÿ° ÿ°ÿ°.ÿ°?ÿ°Mÿ°[ÿ°pÿ°…ÿ°•ÿ°£ÿ°²ÿ°Åÿ°Ûÿ°ñÿ± -ÿ±ÿ±2ÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±™ÿ±«ÿ±ºÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²ÿ²ÿ²2ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²ÿ²Šÿ²™ÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ²öÿ³ -ÿ³ ÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³sÿ³‚ÿ³‘ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×ÿ³çÿ³ùÿ´ÿ´ÿ´ÿ´)ÿ´3ÿ´Cÿ´Oÿ´_ÿ´kÿ´tÿ´ÿ´ÿ´Ÿÿ´©ÿ´·ÿ´Åÿ´Òÿ´Ýÿ´íÿ´øÿµÿµÿµÿµ)ÿµ7ÿµBÿµMÿµ]ÿµmÿµzÿµ‰ÿµ ÿµ«ÿµ·ÿµÉÿµÖÿµâÿµïÿ¶ÿ¶ÿ¶ ÿ¶4ÿ¶?ÿ¶Pÿ¶bÿ¶rÿ¶~ÿ¶ˆÿ¶”ÿ¶Ÿÿ¶«ÿ¶·ÿ¶Éÿ¶Ùÿ¶íÿ·ÿ·ÿ·#ÿ·/ÿ·>ÿ·Lÿ·Vÿ·fÿ·q°>X 4¨ $  @,2ˆ…>X‚àC Ž0   ¸ude/snmp_groupvars.h~ àude/snmp_groupvars.h ŽX Ž€ Ž¨ ŽÐ „©/*********************************************************** - Copyright 1989 by Carnegie Mellon University - - All Rights Reserved - -Permission to use, copy, modify, and distribute this software and its -documentation for any purpose and without fee is hereby granted, -provided that the above copyright notice appear in all copies and that -both that copyright notice and this permission notice appear in -supporting documentation, and that the name of CMU not be -used in advertising or publicity pertaining to distribution of the -software without specific, written prior permission. - -CMU DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING -ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL -CMU BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR -ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, -WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, -ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS -SOFTWARE. -******************************************************************/ -/* - * snmp_api.c - API for access to snmp. - */ -#define DEBUG_SNMPTRACE 0 /* set to 1 to print all SNMP actions */ -#define DEBUG_SNMPFULLDUMP 0 /* set to 1 to dump all SNMP packets */ - -#include -#include -#include -#include -#include -#include -#include -#ifdef linux -#include -#include -#include -#include -#endif - - -#include "asn1.h" -#include "snmp.h" -#include "snmp_impl.h" -#include "snmp_api.h" -#include "snmp_client.h" - -#define PACKET_LENGTH 4500 - -#ifndef BSD4_3 -#define BSD4_2 -#endif - -#if !defined(BSD4_3) && !defined(linux) && !defined(sun) - -typedef long fd_mask; -#define NFDBITS (sizeof(fd_mask) * NBBY) /* bits per mask */ - -#define FD_SET(n, p) ((p)->fds_bits[(n)/NFDBITS] |= (1 << ((n) % NFDBITS))) -#define FD_CLR(n, p) ((p)->fds_bits[(n)/NFDBITS] &= ~(1 << ((n) % NFDBITS))) -#define FD_ISSET(n, p) ((p)->fds_bits[(n)/NFDBITS] & (1 << ((n) % NFDBITS))) -#define FD_ZERO(p) bzero((char *)(p), sizeof(*(p))) -#endif - -oid default_enterprise[] = {1, 3, 6, 1, 4, 1, 3, 1, 1}; /* enterprises.cmu.systems.cmuSNMP */ - -#define DEFAULT_COMMUNITY "public" -#define DEFAULT_REMPORT SNMP_PORT -#define DEFAULT_ENTERPRISE default_enterprise -#define DEFAULT_TIME 0 -#define DEFAULT_MMS 1389 /* large, randomly picked for testing purposes */ - -/* - * Internal information about the state of the snmp session. - */ -struct snmp_internal_session { - int sd; /* socket descriptor for this connection */ - ipaddr addr; /* address of connected peer */ - struct request_list *requests;/* Info about outstanding requests */ -}; - -/* - * A list of all the outstanding requests for a particular session. - */ -struct request_list { - struct request_list *next_request; - u_long request_id; /* request id */ - int retries; /* Number of retries */ - u_long timeout; /* length to wait for timeout */ - struct timeval time; /* Time this request was made */ - struct timeval expire; /* time this request is due to expire */ - struct snmp_pdu *pdu; /* The pdu for this request (saved so it can be retransmitted */ -}; - -/* - * The list of active/open sessions. - */ -struct session_list { - struct session_list *next; - struct snmp_session *session; - struct snmp_internal_session *internal; -}; - -struct session_list *Sessions = NULL; - -u_long Reqid = 0; -int snmp_errno = 0; - -char *api_errors[4] = { - "Unknown session", - "Unknown host", - "Invalid local port", - "Unknown Error" -}; - - -void sync_with_agent(); -int parse_app_community_string(); -void snmp_synch_setup(); -int snmp_synch_response(); -void md5Digest(); - - -static char * -api_errstring(snmp_errnumber) - int snmp_errnumber; -{ - if (snmp_errnumber <= SNMPERR_BAD_SESSION && snmp_errnumber >= SNMPERR_GENERR){ - return api_errors[snmp_errnumber + 4]; - } else { - return "Unknown Error"; - } -} - -#if 0 -/* - * Gets initial request ID for all transactions. - */ -static void -init_snmp(){ - struct timeval tv; - - gettimeofday(&tv, (struct timezone *)0); - srandom(tv.tv_sec ^ tv.tv_usec); - Reqid = random(); -} -#endif - - -/* - * Dump snmp packet to stdout: - */ -static void -snmp_print_packet(packet, length, addr, code) - char *packet; - int length; - ipaddr addr; - int code; -{ - if(length < 0) { - return; - } - if (code <= 0) { /* received */ - printf("\nReceived %4d bytes from ", length); - } - else { /* sending */ - printf("\nSending %4d bytes to ", length); - } - printf("%s:", inet_ntoa(addr.sin_addr)); -#if DEBUG_SNMPFULLDUMP - for (count = 0; count < length; count++) { - if ((count & 15) == 0) { - printf("\n "); - } - printf("%02X ", (int)(packet[count]&255)); - } -#endif - fflush(stdout); -} - -#if DEBUG_SNMPTRACE -/* - * Print request - */ -#define TRACE_SEND (0) -#define TRACE_RECV (1) -#define TRACE_TIMEOUT (2) -static void -snmp_print_trace(slp, rp, code) - struct session_list *slp; - struct request_list *rp; - int code; -{ - int reqid=0, retries=1; - if( rp ){ - reqid = rp->request_id; - retries = rp->retries; - } - printf("\n Session %2d ReqId %4d ", slp->internal->sd, reqid); - switch(code) - { - case TRACE_SEND: printf("send pdu (%d)", retries);break; - case TRACE_RECV: printf("recv pdu");break; - case TRACE_TIMEOUT: printf("time out");break; - } - fflush(stdout); -} -#endif /* DEBUG_SNMPTRACE */ - - - - -/* - * Sets up the session with the snmp_session information provided - * by the user. Then opens and binds the necessary UDP port. - * A handle to the created session is returned (this is different than - * the pointer passed to snmp_open()). On any error, NULL is returned - * and snmp_errno is set to the appropriate error code. - */ -struct snmp_session * -snmp_open(session) - struct snmp_session *session; -{ - struct session_list *slp; - struct snmp_internal_session *isp; - u_char *cp; - int sd; - u_long addr; - struct sockaddr_in me; - struct hostent *hp; - struct servent *servp; - extern int check_received_pkt(); - - /* Copy session structure and link into list */ - slp = (struct session_list *)calloc(1, sizeof(struct session_list)); - slp->internal = isp = (struct snmp_internal_session *)calloc(1, sizeof(struct snmp_internal_session)); - bzero((char *)isp, sizeof(struct snmp_internal_session)); - slp->internal->sd = -1; /* mark it not set */ - slp->session = (struct snmp_session *)calloc(1, sizeof(struct snmp_session)); - bcopy((char *)session, (char *)slp->session, sizeof(struct snmp_session)); - session = slp->session; - /* now link it in. */ - slp->next = Sessions; - Sessions = slp; - - /* - * session now points to the new structure that still contains pointers to - * data allocated elsewhere. Some of this data is copied to space malloc'd - * here, and the pointer replaced with the new one. - */ - - if (session->peername != NULL){ - cp = (u_char *)calloc(1, (unsigned)strlen(session->peername) + 1); - strcpy((char *)cp, session->peername); - session->peername = (char *)cp; - } - - if (session->retries == SNMP_DEFAULT_RETRIES) - session->retries = SNMP_API_DEFAULT_RETRIES; - if (session->timeout == SNMP_DEFAULT_TIMEOUT) - session->timeout = SNMP_API_DEFAULT_TIMEOUT; - if (session->MMS == 0 ) - session->MMS = DEFAULT_MMS; - isp->requests = NULL; - - - /* Fill in defaults if necessary */ - if (session->community_len != SNMP_DEFAULT_COMMUNITY_LEN){ - if( *session->community == '+' ) { - session->community_len--; - cp = (u_char *) calloc(1, (unsigned) session->community_len); - bcopy((char *) session->community+1, (char *)cp, - session->community_len); - session->version = SNMP_VERSION_2C; - } else { - cp = (u_char *) calloc(1, (unsigned) session->community_len); - bcopy((char *) session->community, (char *) cp, - session->community_len); - } - - } else { - session->community_len = strlen(DEFAULT_COMMUNITY); - cp = (u_char *)calloc(1, (unsigned)session->community_len); - bcopy((char *)DEFAULT_COMMUNITY, (char *)cp, session->community_len); - } - - /* Set up connections */ - sd = socket(AF_INET, SOCK_DGRAM, 0); - if (sd < 0){ - perror("socket"); - snmp_errno = SNMPERR_GENERR; - if (!snmp_close(session)){ - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", api_errstring(snmp_errno)); - exit(1); - } - return 0; - } - isp->sd = sd; - - if (session->peername != SNMP_DEFAULT_PEERNAME){ - if ((addr = inet_addr(session->peername)) != -1){ - bcopy((char *)&addr, (char *)&isp->addr.sin_addr, sizeof(isp->addr.sin_addr)); - } else { - hp = gethostbyname(session->peername); - if (hp == NULL){ - fprintf(stderr, "unknown host: %s\n", session->peername); - snmp_errno = SNMPERR_BAD_ADDRESS; - if (!snmp_close(session)){ - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", api_errstring(snmp_errno)); - exit(2); - } - return 0; - } else { - bcopy((char *)hp->h_addr, (char *)&isp->addr.sin_addr, hp->h_length); - } - } - isp->addr.sin_family = AF_INET; - if (session->remote_port == SNMP_DEFAULT_REMPORT){ - /*servp = getservbyname("snmp", "udp");*/ - servp=NULL; - if (servp != NULL){ - isp->addr.sin_port = servp->s_port; - } else { - isp->addr.sin_port = htons(SNMP_PORT); - } - } else { - isp->addr.sin_port = htons(session->remote_port); - } - } else { - isp->addr.sin_addr.s_addr = SNMP_DEFAULT_ADDRESS; - } - - me.sin_family = AF_INET; - me.sin_addr.s_addr = INADDR_ANY; - me.sin_port = htons(session->local_port); - if (bind(sd, (struct sockaddr *)&me, sizeof(me)) != 0){ - perror("bind"); - snmp_errno = SNMPERR_BAD_LOCPORT; - if (! snmp_close(session)){ - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", - api_errstring(snmp_errno)); - exit(3); - } - return 0; - } - - if( *cp == '/' ) { - session->authenticator = check_received_pkt; - sync_with_agent(session); - parse_app_community_string( session ); - session->qoS |= USEC_QOS_GENREPORT; - } - - /* replace comm pointer with pointer to new data: */ - session->community = cp; - - return session; -} - -void -sync_with_agent( session ) -struct snmp_session *session; -{ - struct snmp_pdu *pdu, *response = 0; - int status; - - session->qoS = USEC_QOS_GENREPORT; - session->userLen = 6; - session->version = SNMP_VERSION_2; - strcpy( session->userName, "public" ); - - snmp_synch_setup(session); - pdu = snmp_pdu_create(GET_REQ_MSG); - status = snmp_synch_response(session, pdu, &response); - - if (status == STAT_SUCCESS){ - memcpy( session->agentID, response->params.agentID, 12 ); - - /* save the clocks -- even though they are not authentic */ - session->agentBoots = response->params.agentBoots; - session->agentTime = response->params.agentTime; - session->agentClock = response->params.agentTime - time(NULL); - - } else { - if (status == STAT_TIMEOUT){ - printf("No Response from %s\n", session->peername); - } else { /* status == STAT_ERROR */ - printf("An error occurred, Quitting\n"); - } - exit( -1 ); - } - - /** freed to early: - snmp_free_pdu(pdu); - if (response) snmp_free_pdu(response); - **/ -} -#if 1 /***/ -/* - * Unlink one element from input request list, - * then free it and it's pdu. - */ -static void -free_one_request(isp, orp) - struct snmp_internal_session *isp; - struct request_list *orp; -{ - struct request_list *rp; - if(! orp) return; - if(isp->requests == orp){ - isp->requests = orp->next_request; /* unlink head */ - } - else{ - for(rp = isp->requests; rp; rp = rp->next_request){ - if(rp->next_request == orp){ - rp->next_request = orp->next_request; /* unlink element */ - break; - } - } - } - if (orp->pdu != NULL){ - snmp_free_pdu(orp->pdu); - } - free((char *)orp); -} -#endif /***/ -/* - * Free each element in the input request list. - */ -static void -free_request_list(rp) - struct request_list *rp; -{ - struct request_list *orp; - - while(rp){ - orp = rp; - rp = rp->next_request; - if (orp->pdu != NULL) - snmp_free_pdu(orp->pdu); - free((char *)orp); - } -} - -/* - * Close the input session. Frees all data allocated for the session, - * dequeues any pending requests, and closes any sockets allocated for - * the session. Returns 0 on error, 1 otherwise. - */ -int -snmp_close(session) - struct snmp_session *session; -{ - struct session_list *slp = NULL, *oslp = NULL; - - if (Sessions->session == session){ /* If first entry */ - slp = Sessions; - Sessions = slp->next; - } else { - for(slp = Sessions; slp; slp = slp->next){ - if (slp->session == session){ - if (oslp) /* if we found entry that points here */ - oslp->next = slp->next; /* link around this entry */ - break; - } - oslp = slp; - } - } - /* If we found the session, free all data associated with it */ - if (slp){ - if (slp->session->community != NULL) - free((char *)slp->session->community); - if(slp->session->peername != NULL) - free((char *)slp->session->peername); - free((char *)slp->session); - if (slp->internal->sd != -1) - close(slp->internal->sd); - free_request_list(slp->internal->requests); - free((char *)slp->internal); - free((char *)slp); - } else { - snmp_errno = SNMPERR_BAD_SESSION; - return 0; - } - return 1; -} - -/* - * Takes a session and a pdu and serializes the ASN PDU into the area - * pointed to by packet. out_length is the size of the data area available. - * Returns the length of the completed packet in out_length. If any errors - * occur, -1 is returned. If all goes well, 0 is returned. - */ -int -snmp_build(session, pdu, packet, out_length, is_agent) - struct snmp_session *session; - struct snmp_pdu *pdu; - u_char *packet; - int *out_length; - int is_agent; -{ - u_char buf[PACKET_LENGTH]; - u_char *cp; - struct variable_list *vp; - int length; - int totallength; - - length = *out_length; - cp = packet; - for(vp = pdu->variables; vp; vp = vp->next_variable){ - cp = snmp_build_var_op(cp, vp->name, &vp->name_length, vp->type, vp->val_len, (u_char *)vp->val.string, &length); - if (cp == NULL) - return -1; - } - totallength = cp - packet; - - length = PACKET_LENGTH; - cp = asn_build_header(buf, &length, (u_char)(ASN_SEQUENCE | ASN_CONSTRUCTOR), totallength); - if (cp == NULL) - return -1; - bcopy((char *)packet, (char *)cp, totallength); - totallength += cp - buf; - - length = *out_length; - if (pdu->command != TRP_REQ_MSG){ - /* request id */ - cp = asn_build_int(packet, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->reqid, sizeof(pdu->reqid)); - if (cp == NULL) - return -1; - /* error status */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->errstat, sizeof(pdu->errstat)); - if (cp == NULL) - return -1; - /* error index */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->errindex, sizeof(pdu->errindex)); - if (cp == NULL) - return -1; - } else { /* this is a trap message */ - /* enterprise */ - cp = asn_build_objid(packet, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_OBJECT_ID), - (oid *)pdu->enterprise, pdu->enterprise_length); - if (cp == NULL) - return -1; - /* agent-addr */ - cp = asn_build_string(cp, &length, (u_char)IPADDRESS, - (u_char *)&pdu->agent_addr.sin_addr.s_addr, sizeof(pdu->agent_addr.sin_addr.s_addr)); - if (cp == NULL) - return -1; - /* generic trap */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->trap_type, sizeof(pdu->trap_type)); - if (cp == NULL) - return -1; - /* specific trap */ - cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->specific_type, sizeof(pdu->specific_type)); - if (cp == NULL) - return -1; - /* timestamp */ - cp = asn_build_int(cp, &length, (u_char)TIMETICKS, - (long *)&pdu->time, sizeof(pdu->time)); - if (cp == NULL) - return -1; - } - if (length < totallength) - return -1; - bcopy((char *)buf, (char *)cp, totallength); - totallength += cp - packet; - - length = PACKET_LENGTH; - cp = asn_build_header(buf, &length, (u_char)pdu->command, totallength); - if (cp == NULL) - return -1; - if (length < totallength) - return -1; - bcopy((char *)packet, (char *)cp, totallength); - totallength += cp - buf; - - length = *out_length; - - cp = snmp_auth_build( packet, &length, session, is_agent, totallength ); - if (cp == NULL) - return -1; - if ((*out_length - (cp - packet)) < totallength) - return -1; - bcopy((char *)buf, (char *)cp, totallength); - totallength += cp - packet; - *out_length = totallength; - - if( session->qoS & USEC_QOS_AUTH ) - md5Digest( packet, totallength, cp - (session->contextLen + 16), - cp - (session->contextLen + 16) ); - - return 0; -} - -/* - * Parses the packet received on the input session, and places the data into - * the input pdu. length is the length of the input packet. If any errors - * are encountered, -1 is returned. Otherwise, a 0 is returned. - */ -static int -snmp_parse(session, pdu, data, length) - struct snmp_session *session; - struct snmp_pdu *pdu; - u_char *data; - int length; -{ - u_char msg_type; - u_char type; - u_char *var_val; - long version; - int len, four; - u_char community[256]; - int community_length = 256; - struct variable_list *vp = 0; - oid objid[MAX_NAME_LEN], *op; - u_char *origdata = data; - int origlength = length; - int ret = 0; - u_char *save_data; - - /* authenticates message and returns length if valid */ - data = snmp_auth_parse(data, &length, community, &community_length, &version); - if (data == NULL) - return -1; - - if( version != SNMP_VERSION_1 && version != SNMP_VERSION_2C && version != SNMP_VERSION_2 ) { - fprintf(stderr, "Wrong version: %ld\n", version); - return -1; - } - - save_data = data; - - data = asn_parse_header(data, &length, &msg_type); - if (data == NULL) - return -1; - pdu->command = msg_type; - - if( session->authenticator ) { - ret = session->authenticator( origdata, origlength, save_data - community_length, - community_length, session, pdu ); - if( ret < 0 ) return ret; - } - - if (pdu->command != TRP_REQ_MSG){ - data = asn_parse_int(data, &length, &type, (long *)&pdu->reqid, sizeof(pdu->reqid)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->errstat, sizeof(pdu->errstat)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->errindex, sizeof(pdu->errindex)); - if (data == NULL) - return -1; - } else { - pdu->enterprise_length = MAX_NAME_LEN; - data = asn_parse_objid(data, &length, &type, objid, &pdu->enterprise_length); - if (data == NULL) - return -1; - pdu->enterprise = (oid *)calloc(1, pdu->enterprise_length * sizeof(oid)); - bcopy((char *)objid, (char *)pdu->enterprise, pdu->enterprise_length * sizeof(oid)); - - four = 4; - data = asn_parse_string(data, &length, &type, (u_char *)&pdu->agent_addr.sin_addr.s_addr, &four); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->trap_type, sizeof(pdu->trap_type)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->specific_type, sizeof(pdu->specific_type)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->time, sizeof(pdu->time)); - if (data == NULL) - return -1; - } - data = asn_parse_header(data, &length, &type); - if (data == NULL) - return -1; - if (type != (u_char)(ASN_SEQUENCE | ASN_CONSTRUCTOR)) - return -1; - while((int)length > 0){ - if (pdu->variables == NULL){ - pdu->variables = vp = (struct variable_list *)calloc(1, sizeof(struct variable_list)); - } else { - vp->next_variable = (struct variable_list *)calloc(1, sizeof(struct variable_list)); - vp = vp->next_variable; - } - vp->next_variable = NULL; - vp->val.string = NULL; - vp->name = NULL; - vp->name_length = MAX_NAME_LEN; - data = snmp_parse_var_op(data, objid, &vp->name_length, &vp->type, &vp->val_len, &var_val, (int *)&length); - if (data == NULL) - return -1; - op = (oid *)calloc(1, (unsigned)vp->name_length * sizeof(oid)); - bcopy((char *)objid, (char *)op, vp->name_length * sizeof(oid)); - vp->name = op; - - len = PACKET_LENGTH; - switch((short)vp->type){ - case ASN_INTEGER: - vp->val.integer = (long *)calloc(1, sizeof(long)); - vp->val_len = sizeof(long); - asn_parse_int(var_val, &len, &vp->type, (long *)vp->val.integer, sizeof(vp->val.integer)); - break; - case COUNTER: - case GAUGE: - case TIMETICKS: - case UINTEGER: - vp->val.integer = (long *)calloc(1, sizeof(unsigned long)); - vp->val_len = sizeof(unsigned long); - asn_parse_unsigned_int(var_val, &len, &vp->type, (unsigned long *)vp->val.integer, sizeof(vp->val.integer)); - break; - case COUNTER64: - vp->val.counter64 = (struct counter64 *)calloc(1, sizeof(struct counter64) ); - vp->val_len = sizeof(struct counter64); - asn_parse_unsigned_int64(var_val, &len, &vp->type, - (struct counter64 *)vp->val.counter64, - sizeof(*vp->val.counter64)); - break; - case ASN_OCTET_STR: - case IPADDRESS: - case OPAQUE: - case NSAP: - vp->val.string = (u_char *)calloc(1, (unsigned)vp->val_len); - asn_parse_string(var_val, &len, &vp->type, vp->val.string, &vp->val_len); - break; - case ASN_OBJECT_ID: - vp->val_len = MAX_NAME_LEN; - asn_parse_objid(var_val, &len, &vp->type, objid, &vp->val_len); - vp->val_len *= sizeof(oid); - vp->val.objid = (oid *)calloc(1, (unsigned)vp->val_len); - bcopy((char *)objid, (char *)vp->val.objid, vp->val_len); - break; - case SNMP_NOSUCHOBJECT: - case SNMP_NOSUCHINSTANCE: - case SNMP_ENDOFMIBVIEW: - case ASN_NULL: - break; - default: - fprintf(stderr, "bad type returned (%x)\n", vp->type); - break; - } - } - return ret; -} - -/* - * Sends the input pdu on the session after calling snmp_build to create - * a serialized packet. If necessary, set some of the pdu data from the - * session defaults. Add a request corresponding to this pdu to the list - * of outstanding requests on this session, then send the pdu. - * Returns the request id of the generated packet if applicable, otherwise 1. - * On any error, 0 is returned. - * The pdu is freed by snmp_send() unless a failure occured. - */ -int -snmp_send(session, pdu) - struct snmp_session *session; - struct snmp_pdu *pdu; -{ - struct session_list *slp; - struct snmp_internal_session *isp = NULL; - u_char packet[PACKET_LENGTH]; - int length = PACKET_LENGTH; - struct request_list *rp; - struct timeval tv; - - for(slp = Sessions; slp; slp = slp->next){ - if (slp->session == session){ - isp = slp->internal; - break; - } - } - - if (! pdu) { - snmp_errno = SNMPERR_GENERR; - return 0; - } - - if (isp == NULL){ - snmp_errno = SNMPERR_BAD_SESSION; - return 0; - } - if (pdu->command == GET_REQ_MSG || pdu->command == GETNEXT_REQ_MSG - || pdu->command == GET_RSP_MSG || pdu->command == SET_REQ_MSG - || pdu->command == GETBULK_REQ_MSG ){ - if (pdu->reqid == SNMP_DEFAULT_REQID) - pdu->reqid = ++Reqid; - if (pdu->errstat == SNMP_DEFAULT_ERRSTAT) - pdu->errstat = 0; - if (pdu->errindex == SNMP_DEFAULT_ERRINDEX) - pdu->errindex = 0; - } else { - /* fill in trap defaults */ - pdu->reqid = 1; /* give a bogus non-error reqid for traps */ - if (pdu->enterprise_length == SNMP_DEFAULT_ENTERPRISE_LENGTH){ - pdu->enterprise = (oid *)calloc(1, sizeof(DEFAULT_ENTERPRISE)); - bcopy((char *)DEFAULT_ENTERPRISE, (char *)pdu->enterprise, sizeof(DEFAULT_ENTERPRISE)); - pdu->enterprise_length = sizeof(DEFAULT_ENTERPRISE)/sizeof(oid); - } - if (pdu->time == SNMP_DEFAULT_TIME) - pdu->time = DEFAULT_TIME; - } - if (pdu->address.sin_addr.s_addr == SNMP_DEFAULT_ADDRESS){ - if (isp->addr.sin_addr.s_addr != SNMP_DEFAULT_ADDRESS){ - bcopy((char *)&isp->addr, (char *)&pdu->address, sizeof(pdu->address)); - } else { - fprintf(stderr, "No remote IP address specified\n"); - snmp_errno = SNMPERR_BAD_ADDRESS; - return 0; - } - } - - - if (snmp_build(session, pdu, packet, &length, 0) < 0){ - fprintf(stderr, "Error building packet\n"); - snmp_errno = SNMPERR_GENERR; - return 0; - } -#if 1 /***/ - if (snmp_dump_packet){ - snmp_print_packet(packet, length, pdu->address, 1); - } -#endif /***/ - - gettimeofday(&tv, (struct timezone *)0); - if (sendto(isp->sd, (char *)packet, length, 0, (struct sockaddr *)&pdu->address, sizeof(pdu->address)) < 0){ - perror("sendto"); - snmp_errno = SNMPERR_GENERR; - return 0; - } - if (pdu->command == GET_REQ_MSG || pdu->command == GETNEXT_REQ_MSG - || pdu->command == SET_REQ_MSG || pdu->command == GETBULK_REQ_MSG ){ - /* set up to expect a response */ - rp = (struct request_list *)calloc(1, sizeof(struct request_list)); -#if 1 /***/ - if(! rp){ - fprintf(stderr, "Out of memory!\n"); - snmp_errno = SNMPERR_GENERR; - return 0; - } -#endif /***/ - rp->next_request = isp->requests; - isp->requests = rp; - rp->pdu = pdu; - rp->request_id = pdu->reqid; - - rp->retries = 1; - rp->timeout = session->timeout; - rp->time = tv; - tv.tv_usec += rp->timeout; - tv.tv_sec += tv.tv_usec / 1000000L; - tv.tv_usec %= 1000000L; - rp->expire = tv; -#if DEBUG_SNMPTRACE - snmp_print_trace(slp, rp, TRACE_SEND); -#endif - } - return pdu->reqid; -} - -/* - * Frees the pdu and any malloc'd data associated with it. - */ -void -snmp_free_pdu(struct snmp_pdu * pdu) -{ - struct variable_list *vp, *ovp; - - if (! pdu) - return; - - vp = pdu->variables; - while(vp){ - if (vp->name) { - free((char *)vp->name); - } - if (vp->val.string) { - free((char *)vp->val.string); - } - ovp = vp; - vp = vp->next_variable; - free((char *)ovp); - } - if (pdu->enterprise) { - free((char *)pdu->enterprise); - } - free((char *)pdu); -} - - -/* - * Checks to see if any of the fd's set in the fdset belong to - * snmp. Each socket with it's fd set has a packet read from it - * and snmp_parse is called on the packet received. The resulting pdu - * is passed to the callback routine for that session. If the callback - * routine returns successfully, the pdu and it's request are deleted. - */ -void -snmp_read(fdset) - fd_set *fdset; -{ - struct session_list *slp; - struct snmp_session *sp; - struct snmp_internal_session *isp; - u_char packet[PACKET_LENGTH]; - struct sockaddr_in from; - ssize_t length, fromlength; - struct snmp_pdu *pdu; - struct request_list *rp /**, *orp **/ ; - - for(slp = Sessions; slp; slp = slp->next){ - if (FD_ISSET(slp->internal->sd, fdset)){ - sp = slp->session; - isp = slp->internal; - fromlength = sizeof(from); - length = recvfrom(isp->sd, (char *)packet, PACKET_LENGTH, 0, (struct sockaddr *)&from, &fromlength); - if (length == -1) { - perror("recvfrom"); - return; - } -#if 1 /***/ - if (snmp_dump_packet){ - snmp_print_packet(packet, length, from, 0); - } - pdu = (struct snmp_pdu *)calloc(1, sizeof(struct snmp_pdu)); - - if(! pdu){ - fprintf(stderr, "Out of memory!\n"); - snmp_errno = SNMPERR_GENERR; - return; - } -#endif /***/ - - pdu->address = from; - pdu->reqid = 0; - pdu->variables = NULL; - pdu->enterprise = NULL; - pdu->enterprise_length = 0; - if (snmp_parse(sp, pdu, packet, length) < 0){ - fprintf(stderr, "Mangled packet\n"); - snmp_free_pdu(pdu); - return; - } - - if (pdu->command == GET_RSP_MSG || pdu->command == REPORT_MSG){ -#if 1 /***/ /* bug fix: illegal re-use of rp killed some requests */ - struct request_list *rp_next= 0; - for(rp = isp->requests; rp; rp = rp_next){ - rp_next = rp->next_request; - if (rp->request_id == pdu->reqid){ -#if DEBUG_SNMPTRACE - snmp_print_trace(slp, rp, TRACE_RECV); -#endif - if (sp->callback(RECEIVED_MESSAGE, sp, pdu->reqid, pdu, sp->callback_magic) == 1){ - /* successful, so delete request */ - free_one_request(isp, rp); - break; /* no more request with the same reqid */ - } - } - } -#endif /***/ - } else if (pdu->command == GET_REQ_MSG - || pdu->command == GETNEXT_REQ_MSG - || pdu->command == GETBULK_REQ_MSG - || pdu->command == TRP_REQ_MSG || pdu->command == SET_REQ_MSG){ -#if DEBUG_SNMPTRACE - snmp_print_trace(slp, NULL, TRACE_RECV); -#endif - sp->callback(RECEIVED_MESSAGE, sp, pdu->reqid, pdu, sp->callback_magic); - } - snmp_free_pdu(pdu); - } - } -} - -/* - * Returns info about what snmp requires from a select statement. - * numfds is the number of fds in the list that are significant. - * All file descriptors opened for SNMP are OR'd into the fdset. - * If activity occurs on any of these file descriptors, snmp_read - * should be called with that file descriptor set - * - * The timeout is the latest time that SNMP can wait for a timeout. The - * select should be done with the minimum time between timeout and any other - * timeouts necessary. This should be checked upon each invocation of select. - * If a timeout is received, snmp_timeout should be called to check if the - * timeout was for SNMP. (snmp_timeout is idempotent) - * - * Block is 1 if the select is requested to block indefinitely, rather - * than time out. If block is input as 1, the timeout value will be - * treated as undefined, but it must be available for setting in - * snmp_select_info. On return, if block is true, the value of - * timeout will be undefined. - * - * snmp_select_info returns the number of open sockets. (i.e. The - * number of sessions open) - */ -int -snmp_select_info(numfds, fdset, timeout, block) - int *numfds; - fd_set *fdset; - struct timeval *timeout; - int *block; /* should the select block until input arrives (i.e. no input) */ -{ - struct session_list *slp; - struct snmp_internal_session *isp; - struct request_list *rp; - struct timeval now, earliest; - int active = 0, requests = 0; - - timerclear(&earliest); - /* - * For each request outstanding, add it's socket to the fdset, - * and if it is the earliest timeout to expire, mark it as lowest. - */ - for(slp = Sessions; slp; slp = slp->next){ - active++; - isp = slp->internal; - if ((isp->sd + 1) > *numfds) - *numfds = (isp->sd + 1); - FD_SET(isp->sd, fdset); - if (isp->requests){ - /* found another session with outstanding requests */ - requests++; - for(rp = isp->requests; rp; rp = rp->next_request){ - if (!timerisset(&earliest) || timercmp(&rp->expire, &earliest, <)) - earliest = rp->expire; - } - } - } - if (requests == 0) /* if none are active, skip arithmetic */ - return active; - - /* - * Now find out how much time until the earliest timeout. This - * transforms earliest from an absolute time into a delta time, the - * time left until the select should timeout. - */ - gettimeofday(&now, (struct timezone *)0); - earliest.tv_sec--; /* adjust time to make arithmetic easier */ - earliest.tv_usec += 1000000L; - earliest.tv_sec -= now.tv_sec; - earliest.tv_usec -= now.tv_usec; - while (earliest.tv_usec >= 1000000L){ - earliest.tv_usec -= 1000000L; - earliest.tv_sec += 1; - } - if (earliest.tv_sec < 0){ - earliest.tv_sec = 0; - earliest.tv_usec = 0; - } - - /* if it was blocking before or our delta time is less, reset timeout */ - if (*block == 1 || timercmp(&earliest, timeout, <)){ - *timeout = earliest; - *block = 0; - } - return active; -} - -/* - * snmp_timeout should be called whenever the timeout from - * snmp_select_info expires, but it is idempotent, so snmp_timeout can - * be polled (probably a cpu expensive proposition). snmp_timeout - * checks to see if any of the sessions have an outstanding request - * that has timed out. If it finds one (or more), and that pdu has - * more retries available, a new packet is formed from the pdu and is - * resent. If there are no more retries available, the callback for - * the session is used to alert the user of the timeout. - */ -void -snmp_timeout() -{ - struct session_list *slp; - struct snmp_session *sp; - struct snmp_internal_session *isp; -#if 1 /***/ /* replacing freeme by simpler and safer rp_next*/ - struct request_list *rp, *rp_next = 0; -#endif /***/ - struct timeval now; - - gettimeofday(&now, (struct timezone *)0); - /* - * For each request outstanding, check to see if it has expired. - */ - for(slp = Sessions; slp; slp = slp->next){ - sp = slp->session; - isp = slp->internal; -#if 1 /***/ /* simplification */ - for(rp = isp->requests; rp; rp = rp_next){ - rp_next = rp->next_request; - if (timercmp(&rp->expire, &now, <)){ - /* this timer has expired */ - if (rp->retries >= sp->retries){ -#if DEBUG_SNMPTRACE - snmp_print_trace(slp, rp, TRACE_TIMEOUT); -#endif - /* No more chances, delete this entry */ - sp->callback(TIMED_OUT, sp, rp->pdu->reqid, rp->pdu, sp->callback_magic); - free_one_request(isp, rp); - continue; -#endif /***/ - } else { - u_char packet[PACKET_LENGTH]; - int length = PACKET_LENGTH; - struct timeval tv; - - /* retransmit this pdu */ - rp->retries++; - rp->timeout <<= 1; - if (snmp_build(sp, rp->pdu, packet, &length, 0) < 0){ - fprintf(stderr, "Error building packet\n"); - } -#if 1 /***/ - if (snmp_dump_packet){ - snmp_print_packet(packet, length, rp->pdu->address, 1); - } -#endif /***/ - gettimeofday(&tv, (struct timezone *) 0); - if (sendto(isp->sd, (char *) packet, length, 0, (struct sockaddr *) &rp->pdu->address, sizeof(rp->pdu->address)) < 0) { - perror("sendto"); - } - rp->time = tv; - tv.tv_usec += rp->timeout; - tv.tv_sec += tv.tv_usec / 1000000L; - tv.tv_usec %= 1000000L; - rp->expire = tv; -#if DEBUG_SNMPTRACE - snmp_print_trace(slp, rp, TRACE_SEND); -#endif - } - } -#if 1 /***/ /* simplification */ - } -#endif/***/ mplification */by simpler and safer rp_next*/n s */ replace... - */ - * ÿ¯ùsnmplib/snmp_api.cc.hÿ°…<Ðlib/snmp_api.c~~ñÿ±<ðÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±«=ÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²=0ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²Š=Pÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ³ -=pÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³‚ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×Áÿ³ùÿ´=ø%D(ÿ´_=à\BØÿ´©=˜4BØÿ´ø=ÈHBØÿµB>ÿµ]ÿµmÿµzÿµ >(ÿµ·ÿµÉÿµÖÿµï>@ÿ¶ÿ¶ ÿ¶4ÿ¶Pÿ¶rÿ¶~ÿ¶ˆ0ÿ¶Ÿÿ¶·ÿ¶Ù‚àÿ·ÿ·#ÿ·/ÿ·>>Xÿ·V3/usr/people/wessels/.indent.proÿ¯èÿ¯ùÿ° ÿ°ÿ°.ÿ°?ÿ°Mÿ°[ÿ°pÿ°…ÿ°•ÿ°£ÿ°²ÿ°Åÿ°Ûÿ°ñÿ± -ÿ±ÿ±2ÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±™ÿ±«ÿ±ºÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²ÿ²ÿ²2ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²ÿ²Šÿ²™ÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ²öÿ³ -ÿ³ ÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³sÿ³‚ÿ³‘ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×ÿ³çÿ³ùÿ´ÿ´ÿ´ÿ´)ÿ´3ÿ´Cÿ´Oÿ´_ÿ´kÿ´tÿ´ÿ´ÿ´Ÿÿ´©ÿ´·ÿ´Åÿ´Òÿ´Ýÿ´íÿ´øÿµÿµÿµÿµ)ÿµ7ÿµBÿµMÿµ]ÿµmÿµzÿµ‰ÿµ ÿµ«ÿµ·ÿµÉÿµÖÿµâÿµïÿ¶ÿ¶ÿ¶ ÿ¶4ÿ¶?ÿ¶Pÿ¶bÿ¶rÿ¶~ÿ¶ˆÿ¶”ÿ¶Ÿÿ¶«ÿ¶·ÿ¶Éÿ¶Ùÿ¶íÿ·ÿ·ÿ·#ÿ·/ÿ·>ÿ·Lÿ·Vÿ·fÿ·q@ 000000L; - earliest.tv_sec += 1; - } - if (earliest.tv_sec < 0){ - earliest.tv_sec = 0; - earliest.tv_usec = 0; - } - - /* if it was blocking before or our delta time is less, reset timeout */ - if (*block == 1 || timercmp(&earliest, timeout, <)){ - *timeout = earliest; - *block = 0; - } - return active; -} - -/* - * snmp_timeout should be called whenever the timeout from - * snmp_select_info expires, but it is idempotent, so snmp_timeout can - * be polled (probably a cpu expensive proposition). snmp_timeout - * checks to see if any of the sessions have an outstanding request - * that has timed out. If it finds one (or more), and that pdu has - * more retries available, a new packet is formed from the pdu and is - * resent. If there are no more retries available, the callback for - * the session is used to alert the user of the timeout. - */ -void -snmp_timeout() -{ - struct session_list *slp; - struct snmp_session *sp; - struct snmp_internal_session *isp; -#if 1 /***/ /* replacing freeme by simpler and safer rp_next*/ - struct request_list *rp, *rp_next = 0; -#endif /***/ - struct timeval now; - - gettimeofday(&now, (struct timezone *)0); - /* - * For each request outstanding, check to see if it has expired. - */ - for(slp = Sessions; slp; slp = slp->next){ - sp = slp->session; - isp = slp->internal; -#if 1 /***/ /* simplification */ - for(rp = isp->requests; rp; rp = rp_next){ - rp_next = rp->next_request; - if (timercmp(&rp->expire, &now, <)){ - /* this timer has expired */ - if (rp->retries >= sp->retries){ -#if DEBUG_SNMPTRACE - snmp_print_trace(slp, rp, TRACE_TIMEOUT); -#endif - /* No more chances, delete this entry */ - sp->callback(TIMED_OUT, sp, rp->pdu->reqid, rp->pdu, sp->callback_magic); - free_one_request(isp, rp); - continue; -#endif /***/ - } else { - u_char packet[PACKET_LENGTH]; - int length = PACKET_LENGTH; - struct timeval tv; - - /* retransmit this pdu */ - rp->retries++; - rp->timeout <<= 1; - if (snmp_build(sp, rp->pdu, packet, &length, 0) < 0){ - fprintf(stderr, "Error building packet\n"); - } -#if 1 /***/ - if (snmp_dump_packet){ - snmp_print_packet(packet, length, rp->pdu->address, 1); - } -#endif /***/ - gettimeofday(&tv, (struct timezone *) 0); - if (sendto(isp->sd, (char *) packet, length, 0, (struct sockaddr *) &rp->pdu->address, sizeof(rp->pdu->address)) < 0) { - perror("sendto"); - } - rp->time = tv; - tv.tv_usec += rp->timeout; - tv.tv_sec += tv.tv_usec / 1000000L; - tv.tv_usec %= 1000000L; - rp->expire = tv; -#if DEBUG_SNMPTRACE - snmp_print_trace(slp, rp, TRACE_SEND); -#endif - } - } -#if 1 /***/ /* simplification */ - } -ata = data; - int origlength = length; - int ret = 0; - u_char *save_data; - - /* authenticates message and returns length if valid */ - data = snmp_auth_parse(data, &length, community, &community_length, &version); - if (data == NULL) - return -1; - - if( version != SNMP_VERSION_1 && version != SNMP_VERSION_2C && version != SNMP_VERSION_2 ) { - fprintf(stderr, "Wrong version: %ld\n", version); - return -1; - } - - save_data = data; - - data = asn_parse_header(data, &length, &msg_type); - if (data == NULL) - return -1; - pdu->command = msg_type; - - if( session->authenticator ) { - ret = session->authenticator( origdata, origlength, save_data - community_length, - community_length, session, pdu ); - if( ret < 0 ) return ret; - } - - if (pdu->command != TRP_REQ_MSG){ - data = asn_parse_int(data, &length, &type, (long *)&pdu->reqid, sizeof(pdu->reqid)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->errstat, sizeof(pdu->errstat)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->errindex, sizeof(pdu->errindex)); - if (data == NULL) - return -1; - } else { - pdu->enterprise_length = MAX_NAME_LEN; - data = asn_parse_objid(data, &length, &type, objid, &pdu->enterprise_length); - if (data == NULL) - return -1; - pdu->enterprise = (oid *)calloc(1, pdu->enterprise_length * sizeof(oid)); - bcopy((char *)objid, (char *)pdu->enterprise, pdu->enterprise_length * sizeof(oid)); - - four = 4; - data = asn_parse_string(data, &length, &type, (u_char *)&pdu->agent_addr.sin_addr.s_addr, &four); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->trap_type, sizeof(pdu->trap_type)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->specific_type, sizeof(pdu->specific_type)); - if (data == NULL) - return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->time, sizeof(pdu->time)); - if (data == NULL) - return -1; - } - data = asn_parse_header(data, &length, &type); - if (data == NULL) - return -1; - if (type != (u_char)(ASN_SEQUENCE | ASN_CONSTRUCTOR)) - return -1; - while((int)length > 0){ - if (pdu->variables == NULL){ - pdu->variables = vp = (struct variable_list *)calloc(1, sizeof(struct variable_list)); - } else { - vp->next_variable = (struct variable_list *)calloc(1, sizeof(struct variable_list)); - vp = vp->next_variable; - } - vp->next_variable = NULL; - vp->val.string = NULL; - vp->name = NULL; - vp->name_length = MAX_NAME_LEN; - data = snmp_parse_var_op(data, objid, &vp->name_length, &vp->type, &vp->val_len, &var_val, (int *)&length); - if (data == NULL) - return -1; - op = (oid *)calloc(1, (unsigned)vp->name_length * sizeof(oid)); - bcopy((char *)objid, (char *)op, vp->name_length * sizeof(oid)); - vp->name = op; - - len = PACKET_LENGTH; - switch((short)vp->type){ - case ASN_INTEGER: - vp->val.integer = (long *)calloc(1, sizeof(long)); - vp->val_len = sizeof(long); - asn_parse_int(var_val, &len, &vp->type, (long *)vp->val.integer, sizeof(vp->val.integer)); - break; - case COUNTER: - case GAUGE: - case TIMETICKS: - case UINTEGER: - vp->val.integer = (long *)calloc(1, sizeof(unsigned long)); - vp->val_len = sizeof(unsigned long); - asn_parse_unsigned_int(var_val, &len, &vp->type, (unsigned long *)vp->val.integer, sizeof(vp->val.integer)); - break; - case COUNTER64: - vp->val.counter64 = (struct counter64 *)calloc(1, sizeof(struct counter64) ); - vp->val_len = sizeof(struct counter64); - asn_parse_unsigned_int64(var_val, &len, &vp->type, - (struct counter64 *)vp->val.counter64, - sizeof(*vp->val.counter64)); - break; - case ASN_OCTET_STR: - case IPADDRESS: - case OPAQUE: - case NSAP: - vp->val.string = (u_char *)calloc(1, (unsigned)vp->val_len); - asn_parse_string(var_val, &len, &vp->type, vp->val.string, &vp->val_len); - break; - case ASN_OBJECT_ID: - vp->val_len = MAX_NAME_LEN; - asn_parse_objid(var_val, &len, &vp->type, objid, &vp->val_len); - vp->val_len *= sizeof(oid); - vp->val.objid = (oid *)calloc(1, (unsigned)vp->val_len); - bcopy((char *)objid, (char *)vp->val.objid, vp->val_len); - break; - case SNMP_NOSUCHOBJECT: - case SNMP_NOSUCHINSTANCE: - case SNMP_ENDOFMIBVIEW: - case ASN_NULL: - break; - default: - fprintf(stderr, "bad type returned (%x)\n", vp->type); - break; - } - } - return ret; -} - -/* - * Sends the input pdu on the session after calling snmp_build to create - * a serialized packet. If necessary, set some of the pdu data from the - * session defaults. Add a request corresponding to this pdu to the list - * of outstanding requests on this session, then send the pdu. - * Returns the request id of the generated packet if applicable, otherwise 1. - * On any error, 0 is returned. - * The pdu is freed by snmp_send() unless a failure occured. - */ -int -snmp_send(session, pdu) - struct snmp_session *session; - struct snmp_pdu *pdu; -{ - struct session_list *slp; - struct snmp_internal_session *isp = NULL; - u_char packet[PACKET_LENGTH]; - int length = PACKET_LENGTH; - struct request_list *rp; - struct timeval tv; - - for(slp = Sessions; slp; slp = slp->next){ - if (slp->session == session){ - isp = slp->internal; - break; - } - } - - if (! pdu) { - snmp_errno = SNMPERR_GENERR; - return 0; - } - - if (isp == NULL){ - snmp_errno = SNMPERR_BAD_SESSION; - return 0; - } - if (pdu->command == GET_REQ_MSG || pdu->command == GETNEXT_REQ_MSG - || pdu->command == GET_RSP_MSG || pdu->command == SET_REQ_MSG - || pdu->command == GETBULK_REQ_MSG ){ - if (pdu->reqid == SNMP_DEFAULT_REQID) - pdu->reqid = ++Reqid; - if (pdu->errstat == SNMP_DEFAULT_ERRSTAT) - pdu->errstat = 0; - if (pdu->errindex == SNMP_DEFAULT_ERRINDEX) - pdu->errindex = 0; - } else { - /* fill in trap defaults */ - pdu->reqid = 1; /* give a bogus non-error reqid for traps */ - if (pdu->enterprise_length == SNMP_DEFAULT_ENTERPRISE_LENGTH){ - pdu->enterprise = (oid *)calloc(1, sizeof(DEFAULT_ENTERPRISE)); - bcopy((char *)DEFAULT_ENTERPRISE, (char *)pdu->enterprise, sizeof(DEFAULT_ENTERPRISE)); - pdu->enterprise_length = sizeof(DEFAULT_ENTERPRISE)/sizeof(oid); - } - if (pdu->time == SNMP_DEFAULT_TIME) - pdu->time = DEFAULT_TIME; - } - if (pdu->address.sin_addr.s_addr == SNMP_DEFAULT_ADDRESS){ - if (isp->addr.sin_addr.s_addr != SNMP_DEFAULT_ADDRESS){ - bcopy((char *)&isp->addr, (char *)&pdu->address, sizeof(pdu->address)); - } else { - fprintf(stderr, "No remote IP address specified\n"); - snmp_errno = SNMPERR_BAD_ADDRESS; - return 0; - } - } - - - if (snmp_build(session, pdu, packet, &length, 0) < 0){ - fprintf(stderr, "Error building packet\n"); - snmp_errno = SNMPERR_GENERR; - return 0; - } -#if 1 /***/ - if (snmp_dump_packet){ - snmp_print_packet(packet, length, pdu->address, 1); - } -#endif /***/ - - gettimeofday(&tv, (struct timezone *)0); - if (sendto(isp->sd, (char *)packet, length, 0, (struct sockaddr *)&pdu->address, sizeof(pdu->address)) < 0){ - perror("sendto"); - snmp_errno = SNMPERR_GENERR; - return 0; - } - if (pdu->command == GET_REQ_MSG || pdu->command == GETNEXT_REQ_MSG - || pdu->command == SET_REQ_MSG || pdu->command == GETBULK_REQ_MSG ){ - /* set up to expect a response */ - rp = (struct request_list *)calloc(1, sizeof(struct request_list)); -#if 1 /***/ - if(! rp){ - fprintf(stderr, "Out of memory!\n"); - snmp_errno = SNMPERR_GENERR; - return 0; - } -#endif /***/ - rp->next_request = isp->requests; - isp->requests = rp; - rp->pdu = pdu; - rp->request_id = pdu->reqid; - - rp->retries = 1; - rp->timeout = session->timeout; - rp->time = tv; - tv.tv_usec += rp->timeout; - tv.tv_sec += tv.tv_usec / 1000000L; - tv.tv_usec %= 1000000L; - rp->expire = tv; -#if DEBUG_SNMPTRACE - snmp_print_trace(slp, rp, TRACE_SEND); -#endif - } - return pdu->reqid; -} - -/* - * Frees the pdu and any malloc'd data associated with it. - */ -void -snmp_free_pdu(struct snmp_pdu * pdu) -{ - struct variable_list *vp, *ovp; - - if (! pdu) - return; - - vp = pdu->variables; - while(vp){ - if (vp->name) { - free((char *)vp->name); - } - if (vp->val.string) { - free((char *)vp->val.string); - } - ovp = vp; - vp = vp->next_variable; - free((char *)ovp); - } - if (pdu->enterprise) { - free((char *)pdu->enterprise); - } - free((char *)pdu); -} - - -/* - * Checks to see if any of the fd's set in the fdset belong to - * snmp. Each socket with it's fd set has a packet read from it - * and snmp_parse is called on the packet received. The resulting pdu - * is passed to the callback routine for that session. If the callback - * routine returns successfully, the pdu and it's request are deleted. - */ -void -snmp_read(fdset) - fd_set *fdset; -{ - struct session_list *slp; - struct snmp_session *sp; - struct snmp_internal_session *isp; - u_char packet[PACKET_LENGTH]; - struct sockaddr_in from; - ssize_t length, fromlength; - struct snmp_pdu *pdu; - struct request_list *rp /**, *orp **/ ; - - for(slp = Sessions; slp; slp = slp->next){ - if (FD_ISSET(slp->internal->sd, fdset)){ - sp = slp->session; - isp = slp->internal; - fromlength = sizeof(from); - length = recvfrom(isp->sd, (char *)packet, PACKET_LENGTH, 0, (struct sockaddr *)&from, &fromlength); - if (length == -1) { - perror("recvfrom"); - return; - } -#if 1 /***/ - if (snmp_dump_packet){ - snmp_print_packet(packet, length, from, 0); - } - pdu = (struct snmp_pdu *)calloc(1, sizeof(struct snmp_pdu)); - - if(! pdu){ - fprintf(stderr, "Out of memory!\n"); - snmp_errno = SNMPERR_GENERR; - return; - } -#endif /***/ - - pdu->address = from; - pdu->reqid = 0; - pdu->variables = NULL; - pdu->enterprise = NULL; - pdu->enterprise_length = 0; - if (snmp_parse(sp, pdu, packet, length) < 0){ - fprintf(stderr, "Mangled packet\n"); - snmp_free_pdu(pdu); - return; - } - - if (pdu->command == GET_RSP_MSG || pdu->command == REPORT_MSG){ -#if 1 /***/ /* bug fix: illegal re-use of rp killed some requests */ - struct request_list *rp_next= 0; - for(rp = isp->requests; rp; rp = rp_next){ - rp_next = rp->next_request; - if (rp->request_id == pdu->reqid){ -#if DEBUG_SNMPTRACE - snmp_print_trace(slp, rp, TRACE_RECV); -#endif - if (sp->callback(RECEIVED_MESSAGE, sp, pdu->reqid, pdu, sp->callback_magic) == 1){ - /* successful, so delete request */ - free_one_request(isp, rp); - break; /* no more request with the same reqid */ - } - } - } -#endif /***/ - } else if (pdu->command == GET_REQ_MSG - || pdu->command == GETNEXT_REQ_MSG - || pdu->command == GETBULK_REQ_MSG - || pdu->command == TRP_REQ_MSG || pdu->command == SET_REQ_MSG){ -#if DEBUG_SNMPTRACE - snmp_print_trace(slp, NULL, TRACE_RECV); -#endif - sp->callback(RECEIVED_MESSAGE, sp, pdu->reqid, pdu, sp->callback_magic); - } - snmp_free_pdu(pdu); - } - } -} - -/* - * Returns info about what snmp requires from a select statement. - * numfds is the number of fds in the list that are significant. - * All file descriptors opened for SNMP are OR'd into the fdset. - * If activity occurs on any of these file descriptors, snmp_read - * should be called with that file descriptor set - * - * The timeout is the latest time that SNMP can wait for a timeout. The - * select should be done with the minimum time between timeout and any other - * timeouts necessary. This should be checked upon each invocation of select. - * If a timeout is received, snmp_timeout should be called to check if the - * timeout was for SNMP. (snmp_timeout is idempotent) - * - * Block is 1 if the select is requested to block indefinitely, rather - * than time out. If block is input as 1, the timeout value will be - * treated as undefined, but it must be available for setting in - * snmp_select_info. On return, if block is true, the value of - * timeout will be undefined. - * - * snmp_select_info returns the number of open sockets. (i.e. The - * number of sessions open) - */ -int -snmp_select_info(numfds, fdset, timeout, block) - int *numfds; - fd_set *fdset; - struct timeval *timeout; - int *block; /* should the select block until input arrives (i.e. no input) */ -{ - struct session_list *slp; - struct snmp_internal_session *isp; - struct request_list *rp; - struct timeval now, earliest; - int active = 0, requests = 0; - - timerclear(&earliest); - /* - * For each request outstanding, add it's socket to the fdset, - * and if it is the earliest timeout to expire, mark it as lowest. - */ - for(slp = Sessions; slp; slp = slp->next){ - active++; - isp = slp->internal; - if ((isp->sd + 1) > *numfds) - *numfds = (isp->sd + 1); - FD_SET(isp->sd, fdset); - if (isp->requests){ - /* found another session with outstanding requests */ - requests++; - for(rp = isp->requests; rp; rp = rp->next_request){ - if (!timerisset(&earliest) || timercmp(&rp->expire, &earliest, <)) - earliest = rp->expire; - } - } - } - if (requests == 0) /* if none are active, skip arithmetic */ - return active; - - /* - * Now find out how much time until the earliest timeout. This - * transforms earliest from an absolute time into a delta time, the - * time left until the select should timeout. - */ - gettimeofday(&now, (struct timezone *)0); - earliest.tv_sec--; /* adjust time to make arithmetic easier */ - earliest.tv_usec += 1000000L; - earliest.tv_sec -= now.tv_sec; - earliest.tv_usec -= now.tv_usec; - while (earliest.tv_usec >= 1000000L){ - earliest.tv_usec -= 1BÐ+= m -È /* >X*/ B4¨NMPTíˆ */cfor testing purposes */e key! replace... - */ - * ÿ¯ùsnmplib/snmp_api.cc.hÿ°…<Ðlib/snmp_api.c~~ñÿ±<ðÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±«=ÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²=0ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²Š=Pÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ³ -=pÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³‚ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×Áÿ³ùÿ´=ø%D(ÿ´_=à\BØÿ´©=˜4BØÿ´ø=ÈHBØÿµB>ÿµ]ÿµmÿµzÿµ >(ÿµ·ÿµÉÿµÖÿµï>@ÿ¶ÿ¶ ÿ¶4ÿ¶Pÿ¶rÿ¶~ÿ¶ˆ0ÿ¶Ÿ4¨ÿ¶·ÿ¶Ù‰èÿ·ÿ·#ÿ·/ÿ·>>Xÿ·V3/usr/people/wessels/.indent.proÿ¯èÿ¯ùÿ° ÿ°ÿ°.ÿ°?ÿ°Mÿ°[ÿ°pÿ°…ÿ°•ÿ°£ÿ°²ÿ°Åÿ°Ûÿ°ñÿ± -ÿ±ÿ±2ÿ±Fÿ±Yÿ±iÿ±{ÿ±Šÿ±™ÿ±«ÿ±ºÿ±Çÿ±Óÿ±éÿ±÷ÿ²ÿ²ÿ²ÿ²2ÿ²<ÿ²Kÿ²Wÿ²fÿ²tÿ²ÿ²Šÿ²™ÿ²¨ÿ²¶ÿ²Äÿ²Ôÿ²ãÿ²öÿ³ -ÿ³ ÿ³3ÿ³Bÿ³Sÿ³]ÿ³iÿ³sÿ³‚ÿ³‘ÿ³ ÿ³­ÿ³ºÿ³Êÿ³×ÿ³çÿ³ùÿ´ÿ´ÿ´ÿ´)ÿ´3ÿ´Cÿ´Oÿ´_ÿ´kÿ´tÿ´ÿ´ÿ´Ÿÿ´©ÿ´·ÿ´Åÿ´Òÿ´Ýÿ´íÿ´øÿµÿµÿµÿµ)ÿµ7ÿµBÿµMÿµ]ÿµmÿµzÿµ‰ÿµ ÿµ«ÿµ·ÿµÉÿµÖÿµâÿµïÿ¶ÿ¶ÿ¶ ÿ¶4ÿ¶?ÿ¶Pÿ¶bÿ¶rÿ¶~ÿ¶ˆÿ¶”ÿ¶Ÿÿ¶«ÿ¶·ÿ¶Éÿ¶Ùÿ¶íÿ·ÿ·ÿ·#ÿ·/ÿ·>ÿ·Lÿ·Vÿ·fÿ·q°>X 4¨ $  @,2ˆ…>X‚àC Ž0   ¸ude/snmp_groupvars.h~ àude/snmp_groupvars.h ŽX Ž€ Ž¨ ŽÐ „©/*********************************************************** - Copyright 1989 by Carnegie Mellon University - - All Rights Reserved - -Permission to use, copy, modify, and distribute this software and its -documentation for any purpose and without fee is hereby granted, -provided that the above copyright notice appear in all copies and that -both that copyright notice and this permission notice appear in -supporting documentation, and that the name of CMU not be -used in advertising or publicity pertaining to distribution of the -software without specific, written prior permission. - -CMU DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING -ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL -CMU BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR -ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, -WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, -ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS -SOFTWARE. -******************************************************************/ -/* - * snmp_api.c - API for access to snmp. - */ -#define DEBUG_SNMPTRACE 0 /* set to 1 to print all SNMP actions */ -#define DEBUG_SNMPFULLDUMP 0 /* set to 1 to dump all SNMP packets */ - -#include -#include -#include -#include -#include -#include -#include -#ifdef linux -#include -#include -#include -#include -#endif - - -#include "asn1.h" -#include "snmp.h" -#include "snmp_impl.h" -#include "snmp_api.h" -#include "snmp_client.h" - -#define PACKET_LENGTH 4500 - -#ifndef BSD4_3 -#define BSD4_2 -#endif - -#if !defined(BSD4_3) && !defined(linux) && !defined(sun) - -typedef long fd_mask; -#define NFDBITS (sizeof(fd_mask) * NBBY) /* bits per mask */ - -#define FD_SET(n, p) ((p)->fds_bits[(n)/NFDBITS] |= (1 << ((n) % NFDBITS))) -#define FD_CLR(n, p) ((p)->fds_bits[(n)/NFDBITS] &= ~(1 << ((n) % NFDBITS))) -#define FD_ISSET(n, p) ((p)->fds_bits[(n)/NFDBITS] & (1 << ((n) % NFDBITS))) -#define FD_ZERO(p) bzero((char *)(p), sizeof(*(p))) -#endif - -oid default_enterprise[] = {1, 3, 6, 1, 4, 1, 3, 1, 1}; /* enterprises.cmu.systems.cmuSNMP */ - -#define DEFAULT_COMMUNITY "public" -#define DEFAULT_REMPORT SNMP_PORT -#define DEFAULT_ENTERPRISE default_enterprise -#define DEFAULT_TIME 0 -#define DEFAULT_MMS 1389 /* large, randomly picked for testing purposes */ - -/* - * Internal information about the state of the snmp session. - */ -struct snmp_internal_session { - int sd; /* socket descriptor for this connection */ - ipaddr addr; /* address of connected peer */ - struct request_list *requests;/* Info about outstanding requests */ -}; - -/* - * A list of all the outstanding requests for a particular session. - */ -struct request_list { - struct request_list *next_request; - u_long request_id; /* request id */ - int retries; /* Number of retries */ - u_long timeout; /* length to wait for timeout */ - struct timeval time; /* Time this request was made */ - struct timeval expire; /* time this request is due to expire */ - struct snmp_pdu *pdu; /* The pdu for this request (saved so it can be retransmitted */ -}; - -/* - * The list of active/open sessions. - */ -struct session_list { - struct session_list *next; - struct snmp_session *session; - struct snmp_internal_session *internal; -}; - -struct session_list *Sessions = NULL; - -u_long Reqid = 0; -int snmp_errno = 0; - -char *api_errors[4] = { - "Unknown session", - "Unknown host", - "Invalid local port", - "Unknown Error" -}; - - -void sync_with_agent(); -int parse_app_community_string(); -void snmp_synch_setup(); -int snmp_synch_response(); -void md5Digest(); - - -static char * -api_errstring(snmp_errnumber) - int snmp_errnumber; -{ - if (snmp_errnumber <= SNMPERR_BAD_SESSION && snmp_errnumber >= SNMPERR_GENERR){ - return api_errors[snmp_errnumber + 4]; - } else { - return "Unknown Error"; - } -} - -#if 0 -/* - * Gets initial request ID for all transactions. - */ -static void -init_snmp(){ - struct timeval tv; - - gettimeofday(&tv, (struct timezone *)0); - srandom(tv.tv_sec ^ tv.tv_usec); - Reqid = random(); -} -#endif - - -/* - * Dump snmp packet to stdout: - */ -static void -snmp_print_packet(packet, length, addr, code) - char *packet; - int length; - ipaddr addr; - int code; -{ - if(length < 0) { - return; - } - if (code <= 0) { /* received */ - printf("\nReceived %4d bytes from ", length); - } - else { /* sending */ - printf("\nSending %4d bytes to ", length); - } - printf("%s:", inet_ntoa(addr.sin_addr)); -#if DEBUG_SNMPFULLDUMP - for (count = 0; count < length; count++) { - if ((count & 15) == 0) { - printf("\n "); - } - printf("%02X ", (int)(packet[count]&255)); - } -#endif - fflush(stdout); -} - -#if DEBUG_SNMPTRACE -/* - * Print request - */ -#define TRACE_SEND (0) -#define TRACE_RECV (1) -#define TRACE_TIMEOUT (2) -static void -snmp_print_trace(slp, rp, code) - struct session_list *slp; - struct request_list *rp; - int code; -{ - int reqid=0, retries=1; - if( rp ){ - reqid = rp->request_id; - retries = rp->retries; - } - printf("\n Session %2d ReqId %4d ", slp->internal->sd, reqid); - switch(code) - { - case TRACE_SEND: printf("send pdu (%d)", retries);break; - case TRACE_RECV: printf("recv pdu");break; - case TRACE_TIMEOUT: printf("time out");break; - } - fflush(stdout); -} -#endif /* DEBUG_SNMPTRACE */ - - - - -/* - * Sets up the session with the snmp_session information provided - * by the user. Then opens and binds the necessary UDP port. - * A handle to the created session is returned (this is different than - * the pointer passed to snmp_open()). On any error, NULL is returned - * and snmp_errno is set to the appropriate error code. - */ -struct snmp_session * -snmp_open(session) - struct snmp_session *session; -{ - struct session_list *slp; - struct snmp_internal_session *isp; - u_char *cp; - int sd; - u_long addr; - struct sockaddr_in me; - struct hostent *hp; - struct servent *servp; - extern int check_received_pkt(); - - /* Copy session structure and link into list */ - slp = (struct session_list *)calloc(1, sizeof(struct session_list)); - slp->internal = isp = (struct snmp_internal_session *)calloc(1, sizeof(struct snmp_internal_session)); - bzero((char *)isp, sizeof(struct snmp_internal_session)); - slp->internal->sd = -1; /* mark it not set */ - slp->session = (struct snmp_session *)calloc(1, sizeof(struct snmp_session)); - bcopy((char *)session, (char *)slp->session, sizeof(struct snmp_session)); - session = slp->session; - /* now link it in. */ - slp->next = Sessions; - Sessions = slp; - - /* - * session now points to the new structure that still contains pointers to - * data allocated elsewhere. Some of this data is copied to space malloc'd - * here, and the pointer replaced with the new one. - */ - - if (session->peername != NULL){ - cp = (u_char *)calloc(1, (unsigned)strlen(session->peername) + 1); - strcpy((char *)cp, session->peername); - session->peername = (char *)cp; - } - - if (session->retries == SNMP_DEFAULT_RETRIES) - session->retries = SNMP_API_DEFAULT_RETRIES; - if (session->timeout == SNMP_DEFAULT_TIMEOUT) - session->timeout = SNMP_API_DEFAULT_TIMEOUT; - if (session->MMS == 0 ) - session->MMS = DEFAULT_MMS; - isp->requests = NULL; - - - /* Fill in defaults if necessary */ - if (session->community_len != SNMP_DEFAULT_COMMUNITY_LEN){ - if( *session->community == '+' ) { - session->community_len--; - cp = (u_char *) calloc(1, (unsigned) session->community_len); - bcopy((char *) session->community+1, (char *)cp, - session->community_len); - session->version = SNMP_VERSION_2C; - } else { - cp = (u_char *) calloc(1, (unsigned) session->community_len); - bcopy((char *) session->community, (char *) cp, - session->community_len); - } - - } else { - session->community_len = strlen(DEFAULT_COMMUNITY); - cp = (u_char *)calloc(1, (unsigned)session->community_len); - bcopy((char *)DEFAULT_COMMUNITY, (char *)cp, session->community_len); - } - - /* Set up connections */ - sd = socket(AF_INET, SOCK_DGRAM, 0); - if (sd < 0){ - perror("socket"); - snmp_errno = SNMPERR_GENERR; - if (!snmp_close(session)){ - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", api_errstring(snmp_errno)); - exit(1); - } - return 0; - } - isp->sd = sd; - - if (session->peername != SNMP_DEFAULT_PEERNAME){ - if ((addr = inet_addr(session->peername)) != -1){ - bcopy((char *)&addr, (char *)&isp->addr.sin_addr, sizeof(isp->addr.sin_addr)); - } else { - hp = gethostbyname(session->peername); - if (hp == NULL){ - fprintf(stderr, "unknown host: %s\n", session->peername); - snmp_errno = SNMPERR_BAD_ADDRESS; - if (!snmp_close(session)){ - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", api_errstring(snmp_errno)); - exit(2); - } - return 0; - } else { - bcopy((char *)hp->h_addr, (char *)&isp->addr.sin_addr, hp->h_length); - } - } - isp->addr.sin_family = AF_INET; - if (session->remote_port == SNMP_DEFAULT_REMPORT){ - /*servp = getservbyname("snmp", "udp");*/ - servp=NULL; - if (servp != NULL){ - isp->addr.sin_port = servp->s_port; - } else { - isp->addr.sin_port = htons(SNMP_PORT); - } - } else { - isp->addr.sin_port = htons(session->remote_port); - } - } else { - isp->addr.sin_addr.s_addr = SNMP_DEFAULT_ADDRESS; - } - - me.sin_family = AF_INET; - me.sin_addr.s_addr = INADDR_ANY; - me.sin_port = htons(session->local_port); - if (bind(sd, (struct sockaddr *)&me, sizeof(me)) != 0){ - perror("bind"); - snmp_errno = SNMPERR_BAD_LOCPORT; - if (! snmp_close(session)){ - fprintf(stderr, "Couldn't abort session: %s. Exiting\n", - api_errstring(snmp_errno)); - exit(3); - } - return 0; - } - - if( *cp == '/' ) { - session->authenticator = check_received_pkt; - sync_with_agent(session); - parse_app_community_string( session ); - session->qoS |= USEC_QOS_GENREPORT; - } - - /* replace comm pointer with pointer to new data: */ - session->community = cp; - - return session; -} - -void -sync_with_agent( session ) -struct snmp_session *session; -{ - struct snmp_pdu *pdu, *response = 0; - int status; - - session->qoS = USEC_QOS_GENREPORT; - session->userLen = 6; - session->version = SNMP_VERSION_2; - strcpy( session->userName, "public" ); - - snmp_synch_setup(session); - pdu = snmp_pdu_create(GET_REQ_MSG); - status = snmp_synch_response(session, pdu, &response); - - if (status == STAT_SUCCESS){ - memcpy( session->agentID, response->params.agentID, 12 ); - - /* save the clocks -- even though they are not authentic */ - session->agentBoots = response->params.agentBoots; - session->agentTime = response->params.agentTime; - session->agentClock = response->params.agentTime - time(NULL); - - } else { - if (status == STAT_TIMEOUT){ - printf("No Response from %s\n", session->peername); - } else { /* status == STAT_ERROR */ - printf("An error occurred, Quitting\n"); - } - exit( -1 ); - } - - /** freed to early: - snmp_free_pdu(pdu); - if (response) snmp_free_pdu(response); - **/ -} -#if 1 /***/ -/* - * Unlink one element from input request list, - * then free it and it's pdu. - */ -static void -free_one_request(isp, orp) - struct snmp_internal_session *isp; - struct request_list *orp; -{ - struct request_list *rp; - if(! orp) return; - if(isp->requests == orp){ - isp->requests = orp->next_request; /* unlink head */ - } - else{ - for(rp = isp->requests; rp; rp = rp->next_request){ - if(rp->next_request == orp){ - rp->next_request = orp->next_request; /* unlink element */ - break; - } - } - } - if (orp->pdu != NULL){ - snmp_free_pdu(orp->pdu); - } - free((char *)orp); -} -#endif /***/ -/* - * Free each element in the input request list. - */ -static void -free_request_list(rp) - struct request_list *rp; { struct request_list *orp; - while(rp){ + while (rp) { orp = rp; rp = rp->next_request; if (orp->pdu != NULL) snmp_free_pdu(orp->pdu); - free((char *)orp); + free((char *) orp); } } @@ -20872,19 +453,19 @@ free_request_list(rp) * dequeues any pending requests, and closes any sockets allocated for * the session. Returns 0 on error, 1 otherwise. */ -int +int snmp_close(session) - struct snmp_session *session; + struct snmp_session *session; { struct session_list *slp = NULL, *oslp = NULL; - if (Sessions->session == session){ /* If first entry */ + if (Sessions->session == session) { /* If first entry */ slp = Sessions; Sessions = slp->next; } else { - for(slp = Sessions; slp; slp = slp->next){ - if (slp->session == session){ - if (oslp) /* if we found entry that points here */ + for (slp = Sessions; slp; slp = slp->next) { + if (slp->session == session) { + if (oslp) /* if we found entry that points here */ oslp->next = slp->next; /* link around this entry */ break; } @@ -20892,17 +473,17 @@ snmp_close(session) } } /* If we found the session, free all data associated with it */ - if (slp){ + if (slp) { if (slp->session->community != NULL) - free((char *)slp->session->community); - if(slp->session->peername != NULL) - free((char *)slp->session->peername); - free((char *)slp->session); + free((char *) slp->session->community); + if (slp->session->peername != NULL) + free((char *) slp->session->peername); + free((char *) slp->session); if (slp->internal->sd != -1) close(slp->internal->sd); free_request_list(slp->internal->requests); - free((char *)slp->internal); - free((char *)slp); + free((char *) slp->internal); + free((char *) slp); } else { snmp_errno = SNMPERR_BAD_SESSION; return 0; @@ -20918,112 +499,112 @@ snmp_close(session) */ int snmp_build(session, pdu, packet, out_length, is_agent) - struct snmp_session *session; - struct snmp_pdu *pdu; - u_char *packet; - int *out_length; - int is_agent; + struct snmp_session *session; + struct snmp_pdu *pdu; + u_char *packet; + int *out_length; + int is_agent; { - u_char buf[PACKET_LENGTH]; - u_char *cp; + u_char buf[PACKET_LENGTH]; + u_char *cp; struct variable_list *vp; - int length; - int totallength; + int length; + int totallength; length = *out_length; cp = packet; - for(vp = pdu->variables; vp; vp = vp->next_variable){ - cp = snmp_build_var_op(cp, vp->name, &vp->name_length, vp->type, vp->val_len, (u_char *)vp->val.string, &length); + for (vp = pdu->variables; vp; vp = vp->next_variable) { + cp = snmp_build_var_op(cp, vp->name, &vp->name_length, vp->type, vp->val_len, (u_char *) vp->val.string, &length); if (cp == NULL) return -1; } totallength = cp - packet; length = PACKET_LENGTH; - cp = asn_build_header(buf, &length, (u_char)(ASN_SEQUENCE | ASN_CONSTRUCTOR), totallength); + cp = asn_build_header(buf, &length, (u_char) (ASN_SEQUENCE | ASN_CONSTRUCTOR), totallength); if (cp == NULL) return -1; - bcopy((char *)packet, (char *)cp, totallength); + bcopy((char *) packet, (char *) cp, totallength); totallength += cp - buf; length = *out_length; - if (pdu->command != TRP_REQ_MSG){ + if (pdu->command != TRP_REQ_MSG) { /* request id */ cp = asn_build_int(packet, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->reqid, sizeof(pdu->reqid)); + (u_char) (ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), + (long *) &pdu->reqid, sizeof(pdu->reqid)); if (cp == NULL) return -1; /* error status */ cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->errstat, sizeof(pdu->errstat)); + (u_char) (ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), + (long *) &pdu->errstat, sizeof(pdu->errstat)); if (cp == NULL) return -1; /* error index */ cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->errindex, sizeof(pdu->errindex)); + (u_char) (ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), + (long *) &pdu->errindex, sizeof(pdu->errindex)); if (cp == NULL) return -1; - } else { /* this is a trap message */ + } else { /* this is a trap message */ /* enterprise */ cp = asn_build_objid(packet, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_OBJECT_ID), - (oid *)pdu->enterprise, pdu->enterprise_length); + (u_char) (ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_OBJECT_ID), + (oid *) pdu->enterprise, pdu->enterprise_length); if (cp == NULL) return -1; /* agent-addr */ - cp = asn_build_string(cp, &length, (u_char)IPADDRESS, - (u_char *)&pdu->agent_addr.sin_addr.s_addr, sizeof(pdu->agent_addr.sin_addr.s_addr)); + cp = asn_build_string(cp, &length, (u_char) IPADDRESS, + (u_char *) & pdu->agent_addr.sin_addr.s_addr, sizeof(pdu->agent_addr.sin_addr.s_addr)); if (cp == NULL) return -1; /* generic trap */ cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->trap_type, sizeof(pdu->trap_type)); + (u_char) (ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), + (long *) &pdu->trap_type, sizeof(pdu->trap_type)); if (cp == NULL) return -1; /* specific trap */ cp = asn_build_int(cp, &length, - (u_char)(ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), - (long *)&pdu->specific_type, sizeof(pdu->specific_type)); + (u_char) (ASN_UNIVERSAL | ASN_PRIMITIVE | ASN_INTEGER), + (long *) &pdu->specific_type, sizeof(pdu->specific_type)); if (cp == NULL) return -1; /* timestamp */ - cp = asn_build_int(cp, &length, (u_char)TIMETICKS, - (long *)&pdu->time, sizeof(pdu->time)); + cp = asn_build_int(cp, &length, (u_char) TIMETICKS, + (long *) &pdu->time, sizeof(pdu->time)); if (cp == NULL) return -1; } if (length < totallength) return -1; - bcopy((char *)buf, (char *)cp, totallength); + bcopy((char *) buf, (char *) cp, totallength); totallength += cp - packet; length = PACKET_LENGTH; - cp = asn_build_header(buf, &length, (u_char)pdu->command, totallength); + cp = asn_build_header(buf, &length, (u_char) pdu->command, totallength); if (cp == NULL) return -1; if (length < totallength) return -1; - bcopy((char *)packet, (char *)cp, totallength); + bcopy((char *) packet, (char *) cp, totallength); totallength += cp - buf; length = *out_length; - cp = snmp_auth_build( packet, &length, session, is_agent, totallength ); + cp = snmp_auth_build(packet, &length, session, is_agent, totallength); if (cp == NULL) return -1; if ((*out_length - (cp - packet)) < totallength) return -1; - bcopy((char *)buf, (char *)cp, totallength); + bcopy((char *) buf, (char *) cp, totallength); totallength += cp - packet; *out_length = totallength; - if( session->qoS & USEC_QOS_AUTH ) - md5Digest( packet, totallength, cp - (session->contextLen + 16), - cp - (session->contextLen + 16) ); + if (session->qoS & USEC_QOS_AUTH) + md5Digest(packet, totallength, cp - (session->contextLen + 16), + cp - (session->contextLen + 16)); return 0; } @@ -21035,35 +616,34 @@ snmp_build(session, pdu, packet, out_length, is_agent) */ static int snmp_parse(session, pdu, data, length) - struct snmp_session *session; - struct snmp_pdu *pdu; - u_char *data; - int length; + struct snmp_session *session; + struct snmp_pdu *pdu; + u_char *data; + int length; { - u_char msg_type; - u_char type; - u_char *var_val; - long version; - int len, four; + u_char msg_type; + u_char type; + u_char *var_val; + long version; + int len, four; u_char community[256]; int community_length = 256; struct variable_list *vp = 0; - oid objid[MAX_NAME_LEN], *op; - u_char *origdata = data; - int origlength = length; - int ret = 0; - u_char *save_data; + oid objid[MAX_NAME_LEN], *op; + u_char *origdata = data; + int origlength = length; + int ret = 0; + u_char *save_data; /* authenticates message and returns length if valid */ data = snmp_auth_parse(data, &length, community, &community_length, &version); if (data == NULL) return -1; - if( version != SNMP_VERSION_1 && version != SNMP_VERSION_2C && version != SNMP_VERSION_2 ) { - fprintf(stderr, "Wrong version: %ld\n", version); - return -1; + if (version != SNMP_VERSION_1 && version != SNMP_VERSION_2C && version != SNMP_VERSION_2) { + fprintf(stderr, "Wrong version: %ld\n", version); + return -1; } - save_data = data; data = asn_parse_header(data, &length, &msg_type); @@ -21071,20 +651,20 @@ snmp_parse(session, pdu, data, length) return -1; pdu->command = msg_type; - if( session->authenticator ) { - ret = session->authenticator( origdata, origlength, save_data - community_length, - community_length, session, pdu ); - if( ret < 0 ) return ret; + if (session->authenticator) { + ret = session->authenticator(origdata, origlength, save_data - community_length, + community_length, session, pdu); + if (ret < 0) + return ret; } - - if (pdu->command != TRP_REQ_MSG){ - data = asn_parse_int(data, &length, &type, (long *)&pdu->reqid, sizeof(pdu->reqid)); + if (pdu->command != TRP_REQ_MSG) { + data = asn_parse_int(data, &length, &type, (long *) &pdu->reqid, sizeof(pdu->reqid)); if (data == NULL) return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->errstat, sizeof(pdu->errstat)); + data = asn_parse_int(data, &length, &type, (long *) &pdu->errstat, sizeof(pdu->errstat)); if (data == NULL) return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->errindex, sizeof(pdu->errindex)); + data = asn_parse_int(data, &length, &type, (long *) &pdu->errindex, sizeof(pdu->errindex)); if (data == NULL) return -1; } else { @@ -21092,90 +672,90 @@ snmp_parse(session, pdu, data, length) data = asn_parse_objid(data, &length, &type, objid, &pdu->enterprise_length); if (data == NULL) return -1; - pdu->enterprise = (oid *)calloc(1, pdu->enterprise_length * sizeof(oid)); - bcopy((char *)objid, (char *)pdu->enterprise, pdu->enterprise_length * sizeof(oid)); + pdu->enterprise = (oid *) calloc(1, pdu->enterprise_length * sizeof(oid)); + bcopy((char *) objid, (char *) pdu->enterprise, pdu->enterprise_length * sizeof(oid)); four = 4; - data = asn_parse_string(data, &length, &type, (u_char *)&pdu->agent_addr.sin_addr.s_addr, &four); + data = asn_parse_string(data, &length, &type, (u_char *) & pdu->agent_addr.sin_addr.s_addr, &four); if (data == NULL) return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->trap_type, sizeof(pdu->trap_type)); + data = asn_parse_int(data, &length, &type, (long *) &pdu->trap_type, sizeof(pdu->trap_type)); if (data == NULL) return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->specific_type, sizeof(pdu->specific_type)); + data = asn_parse_int(data, &length, &type, (long *) &pdu->specific_type, sizeof(pdu->specific_type)); if (data == NULL) return -1; - data = asn_parse_int(data, &length, &type, (long *)&pdu->time, sizeof(pdu->time)); + data = asn_parse_int(data, &length, &type, (long *) &pdu->time, sizeof(pdu->time)); if (data == NULL) return -1; } data = asn_parse_header(data, &length, &type); if (data == NULL) return -1; - if (type != (u_char)(ASN_SEQUENCE | ASN_CONSTRUCTOR)) + if (type != (u_char) (ASN_SEQUENCE | ASN_CONSTRUCTOR)) return -1; - while((int)length > 0){ - if (pdu->variables == NULL){ - pdu->variables = vp = (struct variable_list *)calloc(1, sizeof(struct variable_list)); + while ((int) length > 0) { + if (pdu->variables == NULL) { + pdu->variables = vp = (struct variable_list *) calloc(1, sizeof(struct variable_list)); } else { - vp->next_variable = (struct variable_list *)calloc(1, sizeof(struct variable_list)); + vp->next_variable = (struct variable_list *) calloc(1, sizeof(struct variable_list)); vp = vp->next_variable; } vp->next_variable = NULL; vp->val.string = NULL; vp->name = NULL; vp->name_length = MAX_NAME_LEN; - data = snmp_parse_var_op(data, objid, &vp->name_length, &vp->type, &vp->val_len, &var_val, (int *)&length); + data = snmp_parse_var_op(data, objid, &vp->name_length, &vp->type, &vp->val_len, &var_val, (int *) &length); if (data == NULL) return -1; - op = (oid *)calloc(1, (unsigned)vp->name_length * sizeof(oid)); - bcopy((char *)objid, (char *)op, vp->name_length * sizeof(oid)); + op = (oid *) calloc(1, (unsigned) vp->name_length * sizeof(oid)); + bcopy((char *) objid, (char *) op, vp->name_length * sizeof(oid)); vp->name = op; len = PACKET_LENGTH; - switch((short)vp->type){ - case ASN_INTEGER: - vp->val.integer = (long *)calloc(1, sizeof(long)); - vp->val_len = sizeof(long); - asn_parse_int(var_val, &len, &vp->type, (long *)vp->val.integer, sizeof(vp->val.integer)); - break; - case COUNTER: - case GAUGE: - case TIMETICKS: - case UINTEGER: - vp->val.integer = (long *)calloc(1, sizeof(unsigned long)); - vp->val_len = sizeof(unsigned long); - asn_parse_unsigned_int(var_val, &len, &vp->type, (unsigned long *)vp->val.integer, sizeof(vp->val.integer)); - break; - case COUNTER64: - vp->val.counter64 = (struct counter64 *)calloc(1, sizeof(struct counter64) ); - vp->val_len = sizeof(struct counter64); - asn_parse_unsigned_int64(var_val, &len, &vp->type, - (struct counter64 *)vp->val.counter64, - sizeof(*vp->val.counter64)); - break; - case ASN_OCTET_STR: - case IPADDRESS: - case OPAQUE: - case NSAP: - vp->val.string = (u_char *)calloc(1, (unsigned)vp->val_len); - asn_parse_string(var_val, &len, &vp->type, vp->val.string, &vp->val_len); - break; - case ASN_OBJECT_ID: - vp->val_len = MAX_NAME_LEN; - asn_parse_objid(var_val, &len, &vp->type, objid, &vp->val_len); - vp->val_len *= sizeof(oid); - vp->val.objid = (oid *)calloc(1, (unsigned)vp->val_len); - bcopy((char *)objid, (char *)vp->val.objid, vp->val_len); - break; - case SNMP_NOSUCHOBJECT: - case SNMP_NOSUCHINSTANCE: - case SNMP_ENDOFMIBVIEW: - case ASN_NULL: - break; - default: - fprintf(stderr, "bad type returned (%x)\n", vp->type); - break; + switch ((short) vp->type) { + case ASN_INTEGER: + vp->val.integer = (long *) calloc(1, sizeof(long)); + vp->val_len = sizeof(long); + asn_parse_int(var_val, &len, &vp->type, (long *) vp->val.integer, sizeof(vp->val.integer)); + break; + case COUNTER: + case GAUGE: + case TIMETICKS: + case UINTEGER: + vp->val.integer = (long *) calloc(1, sizeof(unsigned long)); + vp->val_len = sizeof(unsigned long); + asn_parse_unsigned_int(var_val, &len, &vp->type, (unsigned long *) vp->val.integer, sizeof(vp->val.integer)); + break; + case COUNTER64: + vp->val.counter64 = (struct counter64 *) calloc(1, sizeof(struct counter64)); + vp->val_len = sizeof(struct counter64); + asn_parse_unsigned_int64(var_val, &len, &vp->type, + (struct counter64 *) vp->val.counter64, + sizeof(*vp->val.counter64)); + break; + case ASN_OCTET_STR: + case IPADDRESS: + case OPAQUE: + case NSAP: + vp->val.string = (u_char *) calloc(1, (unsigned) vp->val_len); + asn_parse_string(var_val, &len, &vp->type, vp->val.string, &vp->val_len); + break; + case ASN_OBJECT_ID: + vp->val_len = MAX_NAME_LEN; + asn_parse_objid(var_val, &len, &vp->type, objid, &vp->val_len); + vp->val_len *= sizeof(oid); + vp->val.objid = (oid *) calloc(1, (unsigned) vp->val_len); + bcopy((char *) objid, (char *) vp->val.objid, vp->val_len); + break; + case SNMP_NOSUCHOBJECT: + case SNMP_NOSUCHINSTANCE: + case SNMP_ENDOFMIBVIEW: + case ASN_NULL: + break; + default: + fprintf(stderr, "bad type returned (%x)\n", vp->type); + break; } } return ret; @@ -21192,35 +772,34 @@ snmp_parse(session, pdu, data, length) */ int snmp_send(session, pdu) - struct snmp_session *session; - struct snmp_pdu *pdu; + struct snmp_session *session; + struct snmp_pdu *pdu; { struct session_list *slp; struct snmp_internal_session *isp = NULL; - u_char packet[PACKET_LENGTH]; + u_char packet[PACKET_LENGTH]; int length = PACKET_LENGTH; struct request_list *rp; struct timeval tv; - for(slp = Sessions; slp; slp = slp->next){ - if (slp->session == session){ + for (slp = Sessions; slp; slp = slp->next) { + if (slp->session == session) { isp = slp->internal; break; } } - if (! pdu) { + if (!pdu) { snmp_errno = SNMPERR_GENERR; return 0; } - - if (isp == NULL){ + if (isp == NULL) { snmp_errno = SNMPERR_BAD_SESSION; return 0; } if (pdu->command == GET_REQ_MSG || pdu->command == GETNEXT_REQ_MSG - || pdu->command == GET_RSP_MSG || pdu->command == SET_REQ_MSG - || pdu->command == GETBULK_REQ_MSG ){ + || pdu->command == GET_RSP_MSG || pdu->command == SET_REQ_MSG + || pdu->command == GETBULK_REQ_MSG) { if (pdu->reqid == SNMP_DEFAULT_REQID) pdu->reqid = ++Reqid; if (pdu->errstat == SNMP_DEFAULT_ERRSTAT) @@ -21229,54 +808,48 @@ snmp_send(session, pdu) pdu->errindex = 0; } else { /* fill in trap defaults */ - pdu->reqid = 1; /* give a bogus non-error reqid for traps */ - if (pdu->enterprise_length == SNMP_DEFAULT_ENTERPRISE_LENGTH){ - pdu->enterprise = (oid *)calloc(1, sizeof(DEFAULT_ENTERPRISE)); - bcopy((char *)DEFAULT_ENTERPRISE, (char *)pdu->enterprise, sizeof(DEFAULT_ENTERPRISE)); - pdu->enterprise_length = sizeof(DEFAULT_ENTERPRISE)/sizeof(oid); + pdu->reqid = 1; /* give a bogus non-error reqid for traps */ + if (pdu->enterprise_length == SNMP_DEFAULT_ENTERPRISE_LENGTH) { + pdu->enterprise = (oid *) calloc(1, sizeof(DEFAULT_ENTERPRISE)); + bcopy((char *) DEFAULT_ENTERPRISE, (char *) pdu->enterprise, sizeof(DEFAULT_ENTERPRISE)); + pdu->enterprise_length = sizeof(DEFAULT_ENTERPRISE) / sizeof(oid); } if (pdu->time == SNMP_DEFAULT_TIME) pdu->time = DEFAULT_TIME; } - if (pdu->address.sin_addr.s_addr == SNMP_DEFAULT_ADDRESS){ - if (isp->addr.sin_addr.s_addr != SNMP_DEFAULT_ADDRESS){ - bcopy((char *)&isp->addr, (char *)&pdu->address, sizeof(pdu->address)); + if (pdu->address.sin_addr.s_addr == SNMP_DEFAULT_ADDRESS) { + if (isp->addr.sin_addr.s_addr != SNMP_DEFAULT_ADDRESS) { + bcopy((char *) &isp->addr, (char *) &pdu->address, sizeof(pdu->address)); } else { fprintf(stderr, "No remote IP address specified\n"); snmp_errno = SNMPERR_BAD_ADDRESS; return 0; } } - - - if (snmp_build(session, pdu, packet, &length, 0) < 0){ + if (snmp_build(session, pdu, packet, &length, 0) < 0) { fprintf(stderr, "Error building packet\n"); snmp_errno = SNMPERR_GENERR; return 0; } -#if 1 /***/ - if (snmp_dump_packet){ - snmp_print_packet(packet, length, pdu->address, 1); + if (snmp_dump_packet) { + snmp_print_packet(packet, length, pdu->address, 1); } -#endif /***/ - - gettimeofday(&tv, (struct timezone *)0); - if (sendto(isp->sd, (char *)packet, length, 0, (struct sockaddr *)&pdu->address, sizeof(pdu->address)) < 0){ + gettimeofday(&tv, (struct timezone *) 0); + if (sendto(isp->sd, (char *) packet, length, 0, (struct sockaddr *) &pdu->address, sizeof(pdu->address)) < 0) { perror("sendto"); snmp_errno = SNMPERR_GENERR; return 0; } - if (pdu->command == GET_REQ_MSG || pdu->command == GETNEXT_REQ_MSG - || pdu->command == SET_REQ_MSG || pdu->command == GETBULK_REQ_MSG ){ + if (pdu->command == GET_REQ_MSG || pdu->command == GETNEXT_REQ_MSG + || pdu->command == SET_REQ_MSG || pdu->command == GETBULK_REQ_MSG) { /* set up to expect a response */ - rp = (struct request_list *)calloc(1, sizeof(struct request_list)); -#if 1 /***/ - if(! rp){ - fprintf(stderr, "Out of memory!\n"); - snmp_errno = SNMPERR_GENERR; - return 0; - } -#endif /***/ + rp = (struct request_list *) calloc(1, sizeof(struct request_list)); + + if (!rp) { + fprintf(stderr, "Out of memory!\n"); + snmp_errno = SNMPERR_GENERR; + return 0; + } rp->next_request = isp->requests; isp->requests = rp; rp->pdu = pdu; @@ -21300,29 +873,29 @@ snmp_send(session, pdu) * Frees the pdu and any malloc'd data associated with it. */ void -snmp_free_pdu(struct snmp_pdu * pdu) +snmp_free_pdu(struct snmp_pdu *pdu) { struct variable_list *vp, *ovp; - if (! pdu) - return; + if (!pdu) + return; vp = pdu->variables; - while(vp){ - if (vp->name) { - free((char *)vp->name); - } - if (vp->val.string) { - free((char *)vp->val.string); - } - ovp = vp; - vp = vp->next_variable; - free((char *)ovp); + while (vp) { + if (vp->name) { + free((char *) vp->name); + } + if (vp->val.string) { + free((char *) vp->val.string); + } + ovp = vp; + vp = vp->next_variable; + free((char *) ovp); } if (pdu->enterprise) { - free((char *)pdu->enterprise); + free((char *) pdu->enterprise); } - free((char *)pdu); + free((char *) pdu); } @@ -21335,76 +908,71 @@ snmp_free_pdu(struct snmp_pdu * pdu) */ void snmp_read(fdset) - fd_set *fdset; + fd_set *fdset; { struct session_list *slp; struct snmp_session *sp; struct snmp_internal_session *isp; u_char packet[PACKET_LENGTH]; - struct sockaddr_in from; + struct sockaddr_in from; ssize_t length, fromlength; struct snmp_pdu *pdu; struct request_list *rp /**, *orp **/ ; - for(slp = Sessions; slp; slp = slp->next){ - if (FD_ISSET(slp->internal->sd, fdset)){ + for (slp = Sessions; slp; slp = slp->next) { + if (FD_ISSET(slp->internal->sd, fdset)) { sp = slp->session; isp = slp->internal; fromlength = sizeof(from); - length = recvfrom(isp->sd, (char *)packet, PACKET_LENGTH, 0, (struct sockaddr *)&from, &fromlength); + length = recvfrom(isp->sd, (char *) packet, PACKET_LENGTH, 0, (struct sockaddr *) &from, &fromlength); if (length == -1) { perror("recvfrom"); return; } -#if 1 /***/ - if (snmp_dump_packet){ - snmp_print_packet(packet, length, from, 0); + if (snmp_dump_packet) { + snmp_print_packet(packet, length, from, 0); } - pdu = (struct snmp_pdu *)calloc(1, sizeof(struct snmp_pdu)); + pdu = (struct snmp_pdu *) calloc(1, sizeof(struct snmp_pdu)); - if(! pdu){ - fprintf(stderr, "Out of memory!\n"); - snmp_errno = SNMPERR_GENERR; - return; + if (!pdu) { + fprintf(stderr, "Out of memory!\n"); + snmp_errno = SNMPERR_GENERR; + return; } -#endif /***/ - pdu->address = from; pdu->reqid = 0; pdu->variables = NULL; pdu->enterprise = NULL; pdu->enterprise_length = 0; - if (snmp_parse(sp, pdu, packet, length) < 0){ + if (snmp_parse(sp, pdu, packet, length) < 0) { fprintf(stderr, "Mangled packet\n"); snmp_free_pdu(pdu); return; } + if (pdu->command == GET_RSP_MSG || pdu->command == REPORT_MSG) { - if (pdu->command == GET_RSP_MSG || pdu->command == REPORT_MSG){ -#if 1 /***/ /* bug fix: illegal re-use of rp killed some requests */ - struct request_list *rp_next= 0; - for(rp = isp->requests; rp; rp = rp_next){ - rp_next = rp->next_request; - if (rp->request_id == pdu->reqid){ + struct request_list *rp_next = 0; + for (rp = isp->requests; rp; rp = rp_next) { + rp_next = rp->next_request; + if (rp->request_id == pdu->reqid) { #if DEBUG_SNMPTRACE - snmp_print_trace(slp, rp, TRACE_RECV); + snmp_print_trace(slp, rp, TRACE_RECV); #endif - if (sp->callback(RECEIVED_MESSAGE, sp, pdu->reqid, pdu, sp->callback_magic) == 1){ - /* successful, so delete request */ - free_one_request(isp, rp); - break; /* no more request with the same reqid */ - } + if (sp->callback(RECEIVED_MESSAGE, sp, pdu->reqid, pdu, sp->callback_magic) == 1) { + /* successful, so delete request */ + free_one_request(isp, rp); + break; /* no more request with the same reqid */ + } + } } - } -#endif /***/ - } else if (pdu->command == GET_REQ_MSG + } else if (pdu->command == GET_REQ_MSG || pdu->command == GETNEXT_REQ_MSG || pdu->command == GETBULK_REQ_MSG - || pdu->command == TRP_REQ_MSG || pdu->command == SET_REQ_MSG){ + || pdu->command == TRP_REQ_MSG || pdu->command == SET_REQ_MSG) { #if DEBUG_SNMPTRACE - snmp_print_trace(slp, NULL, TRACE_RECV); + snmp_print_trace(slp, NULL, TRACE_RECV); #endif - sp->callback(RECEIVED_MESSAGE, sp, pdu->reqid, pdu, sp->callback_magic); + sp->callback(RECEIVED_MESSAGE, sp, pdu->reqid, pdu, sp->callback_magic); } snmp_free_pdu(pdu); } @@ -21435,10 +1003,10 @@ snmp_read(fdset) */ int snmp_select_info(numfds, fdset, timeout, block) - int *numfds; - fd_set *fdset; - struct timeval *timeout; - int *block; /* should the select block until input arrives (i.e. no input) */ + int *numfds; + fd_set *fdset; + struct timeval *timeout; + int *block; /* should the select block until input arrives (i.e. no input) */ { struct session_list *slp; struct snmp_internal_session *isp; @@ -21451,22 +1019,22 @@ snmp_select_info(numfds, fdset, timeout, block) * For each request outstanding, add it's socket to the fdset, * and if it is the earliest timeout to expire, mark it as lowest. */ - for(slp = Sessions; slp; slp = slp->next){ + for (slp = Sessions; slp; slp = slp->next) { active++; isp = slp->internal; if ((isp->sd + 1) > *numfds) *numfds = (isp->sd + 1); FD_SET(isp->sd, fdset); - if (isp->requests){ + if (isp->requests) { /* found another session with outstanding requests */ requests++; - for(rp = isp->requests; rp; rp = rp->next_request){ + for (rp = isp->requests; rp; rp = rp->next_request) { if (!timerisset(&earliest) || timercmp(&rp->expire, &earliest, <)) earliest = rp->expire; } } } - if (requests == 0) /* if none are active, skip arithmetic */ + if (requests == 0) /* if none are active, skip arithmetic */ return active; /* @@ -21474,22 +1042,21 @@ snmp_select_info(numfds, fdset, timeout, block) * transforms earliest from an absolute time into a delta time, the * time left until the select should timeout. */ - gettimeofday(&now, (struct timezone *)0); - earliest.tv_sec--; /* adjust time to make arithmetic easier */ + gettimeofday(&now, (struct timezone *) 0); + earliest.tv_sec--; /* adjust time to make arithmetic easier */ earliest.tv_usec += 1000000L; earliest.tv_sec -= now.tv_sec; earliest.tv_usec -= now.tv_usec; - while (earliest.tv_usec >= 1000000L){ + while (earliest.tv_usec >= 1000000L) { earliest.tv_usec -= 1000000L; earliest.tv_sec += 1; } - if (earliest.tv_sec < 0){ + if (earliest.tv_sec < 0) { earliest.tv_sec = 0; earliest.tv_usec = 0; } - /* if it was blocking before or our delta time is less, reset timeout */ - if (*block == 1 || timercmp(&earliest, timeout, <)){ + if (*block == 1 || timercmp(&earliest, timeout, <)) { *timeout = earliest; *block = 0; } @@ -21512,50 +1079,44 @@ snmp_timeout() struct session_list *slp; struct snmp_session *sp; struct snmp_internal_session *isp; -#if 1 /***/ /* replacing freeme by simpler and safer rp_next*/ struct request_list *rp, *rp_next = 0; -#endif /***/ struct timeval now; - gettimeofday(&now, (struct timezone *)0); + gettimeofday(&now, (struct timezone *) 0); /* * For each request outstanding, check to see if it has expired. */ - for(slp = Sessions; slp; slp = slp->next){ + for (slp = Sessions; slp; slp = slp->next) { sp = slp->session; isp = slp->internal; -#if 1 /***/ /* simplification */ - for(rp = isp->requests; rp; rp = rp_next){ + for (rp = isp->requests; rp; rp = rp_next) { rp_next = rp->next_request; - if (timercmp(&rp->expire, &now, <)){ + if (timercmp(&rp->expire, &now, <)) { /* this timer has expired */ - if (rp->retries >= sp->retries){ + if (rp->retries >= sp->retries) { #if DEBUG_SNMPTRACE - snmp_print_trace(slp, rp, TRACE_TIMEOUT); + snmp_print_trace(slp, rp, TRACE_TIMEOUT); #endif - /* No more chances, delete this entry */ - sp->callback(TIMED_OUT, sp, rp->pdu->reqid, rp->pdu, sp->callback_magic); - free_one_request(isp, rp); - continue; -#endif /***/ + /* No more chances, delete this entry */ + sp->callback(TIMED_OUT, sp, rp->pdu->reqid, rp->pdu, sp->callback_magic); + free_one_request(isp, rp); + continue; } else { - u_char packet[PACKET_LENGTH]; + u_char packet[PACKET_LENGTH]; int length = PACKET_LENGTH; struct timeval tv; /* retransmit this pdu */ rp->retries++; rp->timeout <<= 1; - if (snmp_build(sp, rp->pdu, packet, &length, 0) < 0){ + if (snmp_build(sp, rp->pdu, packet, &length, 0) < 0) { fprintf(stderr, "Error building packet\n"); } -#if 1 /***/ - if (snmp_dump_packet){ - snmp_print_packet(packet, length, rp->pdu->address, 1); + if (snmp_dump_packet) { + snmp_print_packet(packet, length, rp->pdu->address, 1); } -#endif /***/ - gettimeofday(&tv, (struct timezone *)0); - if (sendto(isp->sd, (char *)packet, length, 0, (struct sockaddr *)&rp->pdu->address, sizeof(rp->pdu->address)) < 0){ + gettimeofday(&tv, (struct timezone *) 0); + if (sendto(isp->sd, (char *) packet, length, 0, (struct sockaddr *) &rp->pdu->address, sizeof(rp->pdu->address)) < 0) { perror("sendto"); } rp->time = tv; @@ -21568,8 +1129,6 @@ snmp_timeout() #endif } } -#if 1 /***/ /* simplification */ } -#endif /***/ } }