/* UNIX RFCNB (RFC1001/RFC1002) NetBIOS implementation
- *
+ *
* Version 1.0
* RFCNB Utility Routines ...
- *
+ *
* Copyright (C) Richard Sharpe 1996
- *
+ *
*/
/*
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
- *
+ *
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
- *
+ *
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#include <arpa/inet.h>
#include <string.h>
-const char *RFCNB_Error_Strings[] =
-{
+const char *RFCNB_Error_Strings[] = {
"RFCNBE_OK: Routine completed successfully.",
"RFCNBE_NoSpace: No space available for a malloc call.",
for (i = 0; i < 16; i++) {
- if (i >= len) {
+ if (i >= len) {
- c1 = 'C';
- c2 = 'A'; /* CA is a space */
+ c1 = 'C';
+ c2 = 'A'; /* CA is a space */
- } else {
+ } else {
- c = name1[i];
- c1 = (char) ((int) c / 16 + (int) 'A');
- c2 = (char) ((int) c % 16 + (int) 'A');
- }
+ c = name1[i];
+ c1 = (char) ((int) c / 16 + (int) 'A');
+ c2 = (char) ((int) c % 16 + (int) 'A');
+ }
- name2[i * 2] = c1;
- name2[i * 2 + 1] = c2;
+ name2[i * 2] = c1;
+ name2[i * 2 + 1] = c2;
}
/* Converts an Ascii NB Name (16 chars) to an RFCNB Name (32 chars)
* Uses the encoding in RFC1001. Each nibble of byte is added to 'A'
* to produce the next byte in the name.
- *
- * This routine assumes that AName is 16 bytes long and that NBName has
- * space for 32 chars, so be careful ...
- *
+ *
+ * This routine assumes that AName is 16 bytes long and that NBName has
+ * space for 32 chars, so be careful ...
+ *
*/
void
for (i = 0; i < 16; i++) {
- c = AName[i];
+ c = AName[i];
- c1 = (char) ((c >> 4) + 'A');
- c2 = (char) ((c & 0xF) + 'A');
+ c1 = (char) ((c >> 4) + 'A');
+ c2 = (char) ((c & 0xF) + 'A');
- NBName[i * 2] = c1;
- NBName[i * 2 + 1] = c2;
+ NBName[i * 2] = c1;
+ NBName[i * 2 + 1] = c2;
}
NBName[32] = 0; /* Put in a null */
for (i = 0; i < 16; i++) {
- c1 = NBName[i * 2];
- c2 = NBName[i * 2 + 1];
+ c1 = NBName[i * 2];
+ c2 = NBName[i * 2 + 1];
- c = (char) (((int) c1 - (int) 'A') * 16 + ((int) c2 - (int) 'A'));
+ c = (char) (((int) c1 - (int) 'A') * 16 + ((int) c2 - (int) 'A'));
- AName[i] = c;
+ AName[i] = c;
}
while (pkt_ptr != NULL) {
- for (i = 0;
- i < ((Len > (pkt_ptr->len) ? pkt_ptr->len : Len) - Offset);
- i++) {
+ for (i = 0;
+ i < ((Len > (pkt_ptr->len) ? pkt_ptr->len : Len) - Offset);
+ i++) {
- c = pkt_ptr->data[i + Offset];
- c1 = Hex_List[c >> 4];
- c2 = Hex_List[c & 0xF];
+ c = pkt_ptr->data[i + Offset];
+ c1 = Hex_List[c >> 4];
+ c2 = Hex_List[c & 0xF];
- outbuf1[j++] = c1;
- outbuf1[j++] = c2;
+ outbuf1[j++] = c1;
+ outbuf1[j++] = c2;
- if (j == 32) { /* Print and reset */
- outbuf1[j] = 0;
- fprintf(fd, " %s\n", outbuf1);
- j = 0;
- }
- }
+ if (j == 32) { /* Print and reset */
+ outbuf1[j] = 0;
+ fprintf(fd, " %s\n", outbuf1);
+ j = 0;
+ }
+ }
- Offset = 0;
- Len = Len - pkt_ptr->len; /* Reduce amount by this much */
- pkt_ptr = pkt_ptr->next;
+ Offset = 0;
+ Len = Len - pkt_ptr->len; /* Reduce amount by this much */
+ pkt_ptr = pkt_ptr->next;
}
if (j > 0) {
- outbuf1[j] = 0;
- fprintf(fd, " %s\n", outbuf1);
+ outbuf1[j] = 0;
+ fprintf(fd, " %s\n", outbuf1);
}
fprintf(fd, "\n");
/* Get a packet of size n */
struct RFCNB_Pkt *
-RFCNB_Alloc_Pkt(int n)
-{
+RFCNB_Alloc_Pkt(int n) {
RFCNB_Pkt *pkt;
if ((pkt = malloc(sizeof(struct RFCNB_Pkt))) == NULL) {
- RFCNB_errno = RFCNBE_NoSpace;
- RFCNB_saved_errno = errno;
- return (NULL);
+ RFCNB_errno = RFCNBE_NoSpace;
+ RFCNB_saved_errno = errno;
+ return (NULL);
}
pkt->next = NULL;
pkt->len = n;
if (n == 0)
- return (pkt);
+ return (pkt);
if ((pkt->data = malloc(n)) == NULL) {
- RFCNB_errno = RFCNBE_NoSpace;
- RFCNB_saved_errno = errno;
- free(pkt);
- return (NULL);
+ RFCNB_errno = RFCNBE_NoSpace;
+ RFCNB_saved_errno = errno;
+ free(pkt);
+ return (NULL);
}
return (pkt);
while (pkt != NULL) {
- pkt_next = pkt->next;
+ pkt_next = pkt->next;
- if (pkt->data != NULL)
- free(pkt->data);
+ if (pkt->data != NULL)
+ free(pkt->data);
- free(pkt);
+ free(pkt);
- pkt = pkt_next;
+ pkt = pkt_next;
}
case RFCNB_SESSION_MESSAGE:
- fprintf(fd, "SESSION MESSAGE: Length = %i\n", RFCNB_Pkt_Len(pkt->data));
- RFCNB_Print_Hex(fd, pkt, RFCNB_Pkt_Hdr_Len,
+ fprintf(fd, "SESSION MESSAGE: Length = %i\n", RFCNB_Pkt_Len(pkt->data));
+ RFCNB_Print_Hex(fd, pkt, RFCNB_Pkt_Hdr_Len,
#ifdef RFCNB_PRINT_DATA
- RFCNB_Pkt_Len(pkt->data) - RFCNB_Pkt_Hdr_Len);
+ RFCNB_Pkt_Len(pkt->data) - RFCNB_Pkt_Hdr_Len);
#else
- 40);
+ 40);
#endif
- if (Prot_Print_Routine != 0) { /* Print the rest of the packet */
+ if (Prot_Print_Routine != 0) { /* Print the rest of the packet */
- Prot_Print_Routine(fd, strcmp(dirn, "sent"), pkt, RFCNB_Pkt_Hdr_Len,
- RFCNB_Pkt_Len(pkt->data) - RFCNB_Pkt_Hdr_Len);
+ Prot_Print_Routine(fd, strcmp(dirn, "sent"), pkt, RFCNB_Pkt_Hdr_Len,
+ RFCNB_Pkt_Len(pkt->data) - RFCNB_Pkt_Hdr_Len);
- }
- break;
+ }
+ break;
case RFCNB_SESSION_REQUEST:
- fprintf(fd, "SESSION REQUEST: Length = %i\n",
- RFCNB_Pkt_Len(pkt->data));
- RFCNB_NBName_To_AName((char *) (pkt->data + RFCNB_Pkt_Called_Offset), lname);
- fprintf(fd, " Called Name: %s\n", lname);
- RFCNB_NBName_To_AName((char *) (pkt->data + RFCNB_Pkt_Calling_Offset), lname);
- fprintf(fd, " Calling Name: %s\n", lname);
+ fprintf(fd, "SESSION REQUEST: Length = %i\n",
+ RFCNB_Pkt_Len(pkt->data));
+ RFCNB_NBName_To_AName((char *) (pkt->data + RFCNB_Pkt_Called_Offset), lname);
+ fprintf(fd, " Called Name: %s\n", lname);
+ RFCNB_NBName_To_AName((char *) (pkt->data + RFCNB_Pkt_Calling_Offset), lname);
+ fprintf(fd, " Calling Name: %s\n", lname);
- break;
+ break;
case RFCNB_SESSION_ACK:
- fprintf(fd, "RFCNB SESSION ACK: Length = %i\n",
- RFCNB_Pkt_Len(pkt->data));
+ fprintf(fd, "RFCNB SESSION ACK: Length = %i\n",
+ RFCNB_Pkt_Len(pkt->data));
- break;
+ break;
case RFCNB_SESSION_REJ:
- fprintf(fd, "RFCNB SESSION REJECT: Length = %i\n",
- RFCNB_Pkt_Len(pkt->data));
+ fprintf(fd, "RFCNB SESSION REJECT: Length = %i\n",
+ RFCNB_Pkt_Len(pkt->data));
- if (RFCNB_Pkt_Len(pkt->data) < 1) {
- fprintf(fd, " Protocol Error, short Reject packet!\n");
- } else {
- fprintf(fd, " Error = %x\n", CVAL(pkt->data, RFCNB_Pkt_Error_Offset));
- }
+ if (RFCNB_Pkt_Len(pkt->data) < 1) {
+ fprintf(fd, " Protocol Error, short Reject packet!\n");
+ } else {
+ fprintf(fd, " Error = %x\n", CVAL(pkt->data, RFCNB_Pkt_Error_Offset));
+ }
- break;
+ break;
case RFCNB_SESSION_RETARGET:
- fprintf(fd, "RFCNB SESSION RETARGET: Length = %i\n",
- RFCNB_Pkt_Len(pkt->data));
+ fprintf(fd, "RFCNB SESSION RETARGET: Length = %i\n",
+ RFCNB_Pkt_Len(pkt->data));
- /* Print out the IP address etc and the port? */
+ /* Print out the IP address etc and the port? */
- break;
+ break;
case RFCNB_SESSION_KEEP_ALIVE:
- fprintf(fd, "RFCNB SESSION KEEP ALIVE: Length = %i\n",
- RFCNB_Pkt_Len(pkt->data));
- break;
+ fprintf(fd, "RFCNB SESSION KEEP ALIVE: Length = %i\n",
+ RFCNB_Pkt_Len(pkt->data));
+ break;
default:
- break;
+ break;
}
}
if ((addr = inet_addr(host)) == INADDR_NONE) { /* Oh well, a good try :-) */
- /* Now try a name look up with gethostbyname */
+ /* Now try a name look up with gethostbyname */
- if ((hp = gethostbyname(host)) == NULL) { /* Not in DNS */
+ if ((hp = gethostbyname(host)) == NULL) { /* Not in DNS */
- /* Try NetBIOS name lookup, how the hell do we do that? */
- RFCNB_errno = RFCNBE_BadName; /* Is this right? */
- RFCNB_saved_errno = errno;
- return (RFCNBE_Bad);
+ /* Try NetBIOS name lookup, how the hell do we do that? */
+ RFCNB_errno = RFCNBE_BadName; /* Is this right? */
+ RFCNB_saved_errno = errno;
+ return (RFCNBE_Bad);
- } else { /* We got a name */
- Dest_IP->s_addr = ((struct sockaddr_in*)hp->h_addr_list[0])->sin_addr.s_addr;
- }
+ } else { /* We got a name */
+ Dest_IP->s_addr = (*((struct in_addr*)hp->h_addr_list[0])).s_addr;
+ }
} else { /* It was an IP address */
- Dest_IP->s_addr = addr;
+ Dest_IP->s_addr = addr;
}
return 0;
if ((fd = socket(PF_INET, SOCK_STREAM, 0)) < 0) { /* Handle the error */
- RFCNB_errno = RFCNBE_BadSocket;
- RFCNB_saved_errno = errno;
- return (RFCNBE_Bad);
+ RFCNB_errno = RFCNBE_BadSocket;
+ RFCNB_saved_errno = errno;
+ return (RFCNBE_Bad);
}
memset((char *) &Socket, 0, sizeof(Socket));
memcpy((char *) &Socket.sin_addr, (char *) &Dest_IP, sizeof(Dest_IP));
if (connect(fd, (struct sockaddr *) &Socket, sizeof(Socket)) < 0) { /* Error */
- close(fd);
- RFCNB_errno = RFCNBE_ConnectFailed;
- RFCNB_saved_errno = errno;
- return (RFCNBE_Bad);
+ close(fd);
+ RFCNB_errno = RFCNBE_ConnectFailed;
+ RFCNB_saved_errno = errno;
+ return (RFCNBE_Bad);
}
return (fd);
}
-/* handle the details of establishing the RFCNB session with remote
- * end
- *
+/* handle the details of establishing the RFCNB session with remote
+ * end
+ *
*/
int
RFCNB_Session_Req(struct RFCNB_Con *con,
- char *Called_Name,
- char *Calling_Name,
- BOOL * redirect,
- struct in_addr *Dest_IP,
- int *port)
+ char *Called_Name,
+ char *Calling_Name,
+ BOOL * redirect,
+ struct in_addr *Dest_IP,
+ int *port)
{
char *sess_pkt;
if (pkt == NULL) {
- return (RFCNBE_Bad); /* Leave the error that RFCNB_Alloc_Pkt gives) */
+ return (RFCNBE_Bad); /* Leave the error that RFCNB_Alloc_Pkt gives) */
}
sess_pkt = pkt->data; /* Get pointer to packet proper */
if ((len = RFCNB_Put_Pkt(con, pkt, RFCNB_Pkt_Sess_Len)) < 0) {
- return (RFCNBE_Bad); /* Should be able to write that lot ... */
+ return (RFCNBE_Bad); /* Should be able to write that lot ... */
}
#ifdef RFCNB_DEBUG
if ((len = RFCNB_Get_Pkt(con, &res_pkt, sizeof(resp))) < 0) {
- return (RFCNBE_Bad);
+ return (RFCNBE_Bad);
}
/* Now analyze the packet ... */
case RFCNB_SESSION_REJ: /* Didnt like us ... too bad */
- /* Why did we get rejected ? */
-
- switch (CVAL(resp, RFCNB_Pkt_Error_Offset)) {
-
- case 0x80:
- RFCNB_errno = RFCNBE_CallRejNLOCN;
- break;
- case 0x81:
- RFCNB_errno = RFCNBE_CallRejNLFCN;
- break;
- case 0x82:
- RFCNB_errno = RFCNBE_CallRejCNNP;
- break;
- case 0x83:
- RFCNB_errno = RFCNBE_CallRejInfRes;
- break;
- case 0x8F:
- RFCNB_errno = RFCNBE_CallRejUnSpec;
- break;
- default:
- RFCNB_errno = RFCNBE_ProtErr;
- break;
- }
-
- return (RFCNBE_Bad);
- break;
+ /* Why did we get rejected ? */
+
+ switch (CVAL(resp, RFCNB_Pkt_Error_Offset)) {
+
+ case 0x80:
+ RFCNB_errno = RFCNBE_CallRejNLOCN;
+ break;
+ case 0x81:
+ RFCNB_errno = RFCNBE_CallRejNLFCN;
+ break;
+ case 0x82:
+ RFCNB_errno = RFCNBE_CallRejCNNP;
+ break;
+ case 0x83:
+ RFCNB_errno = RFCNBE_CallRejInfRes;
+ break;
+ case 0x8F:
+ RFCNB_errno = RFCNBE_CallRejUnSpec;
+ break;
+ default:
+ RFCNB_errno = RFCNBE_ProtErr;
+ break;
+ }
+
+ return (RFCNBE_Bad);
+ break;
case RFCNB_SESSION_ACK: /* Got what we wanted ... */
- return (0);
- break;
+ return (0);
+ break;
case RFCNB_SESSION_RETARGET: /* Go elsewhere */
- *redirect = TRUE; /* Copy port and ip addr */
+ *redirect = TRUE; /* Copy port and ip addr */
- memcpy(Dest_IP, (resp + RFCNB_Pkt_IP_Offset), sizeof(struct in_addr));
- *port = SVAL(resp, RFCNB_Pkt_Port_Offset);
+ memcpy(Dest_IP, (resp + RFCNB_Pkt_IP_Offset), sizeof(struct in_addr));
+ *port = SVAL(resp, RFCNB_Pkt_Port_Offset);
- return (0);
- break;
+ return (0);
+ break;
default: /* A protocol error */
- RFCNB_errno = RFCNBE_ProtErr;
- return (RFCNBE_Bad);
- break;
+ RFCNB_errno = RFCNBE_ProtErr;
+ return (RFCNBE_Bad);
+ break;
}
}
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