/*
- * $Id: pinger.cc,v 1.50 2003/02/21 22:50:10 robertc Exp $
+ * $Id: pinger.cc,v 1.51 2003/02/23 00:08:04 robertc Exp $
*
* DEBUG: section 42 ICMP Pinger program
* AUTHOR: Duane Wessels
#if USE_ICMP
+/* Native Windows port doesn't have netinet support, so we emulate it.
+ At this time, Cygwin lacks icmp support in its include files, so we need
+ to use the native Windows port definitions.
+ */
+
+#if !defined(_SQUID_MSWIN_) && !defined(_SQUID_CYGWIN_)
+
+#include <netinet/in_systm.h>
+#include <netinet/in.h>
+#include <netinet/ip.h>
+#include <netinet/ip_icmp.h>
+
+#define PINGER_TIMEOUT 10
+
+static int socket_from_squid = 0;
+static int socket_to_squid = 1;
+
+#else /* _SQUID_MSWIN_ or _SQUID_CYGWIN_ */
+
+#ifdef _SQUID_MSWIN_
+
+#include <winsock2.h>
+#include <process.h>
+
+#define PINGER_TIMEOUT 5
+
+static int socket_to_squid = -1;
+#define socket_from_squid socket_to_squid
+
+#else /* _SQUID_CYGWIN_ */
+
#include <netinet/in_systm.h>
#include <netinet/in.h>
#include <netinet/ip.h>
#include <netinet/ip_icmp.h>
+#define PINGER_TIMEOUT 10
+
+static int socket_from_squid = 0;
+static int socket_to_squid = 1;
+
+#endif
+
+#define ICMP_ECHO 8
+#define ICMP_ECHOREPLY 0
+
+typedef struct iphdr
+{
+
+u_int8_t ip_vhl:
+ 4; /* Length of the header in dwords */
+
+u_int8_t version:
+ 4; /* Version of IP */
+ u_int8_t tos; /* Type of service */
+ u_int16_t total_len; /* Length of the packet in dwords */
+ u_int16_t ident; /* unique identifier */
+ u_int16_t flags; /* Flags */
+ u_int8_t ip_ttl; /* Time to live */
+ u_int8_t proto; /* Protocol number (TCP, UDP etc) */
+ u_int16_t checksum; /* IP checksum */
+ u_int32_t source_ip;
+ u_int32_t dest_ip;
+}
+
+iphdr;
+
+/* ICMP header */
+
+typedef struct icmphdr
+{
+ u_int8_t icmp_type; /* ICMP packet type */
+ u_int8_t icmp_code; /* Type sub code */
+ u_int16_t icmp_cksum;
+ u_int16_t icmp_id;
+ u_int16_t icmp_seq;
+ u_int32_t timestamp; /* not part of ICMP, but we need it */
+}
+
+icmphdr;
+
+#endif /* _SQUID_MSWIN_ */
+
#ifndef _SQUID_LINUX_
#ifndef _SQUID_CYGWIN_
+#ifndef _SQUID_MSWIN_
#define icmphdr icmp
#define iphdr ip
#endif
#endif
+#endif
-#if defined (_SQUID_LINUX_) || defined (_SQUID_CYGWIN_)
+#if defined (_SQUID_LINUX_)
#ifdef icmp_id
#undef icmp_id
#endif
static void pingerLog(struct icmphdr *, struct in_addr, int, int);
static int ipHops(int ttl);
static void pingerSendtoSquid(pingerReplyData * preply);
+static void pingerOpen(void);
+static void pingerClose(void);
void
pingerOpen(void)
{
struct protoent *proto = NULL;
+#ifdef _SQUID_MSWIN_
+
+ WSADATA wsaData;
+ WSAPROTOCOL_INFO wpi;
+ char buf[sizeof(wpi)];
+ int x;
+
+ struct sockaddr_in PS;
+
+ WSAStartup(2, &wsaData);
+
+ getCurrentTime();
+ _db_init(NULL, "ALL,1");
+ setmode(0, O_BINARY);
+ setmode(1, O_BINARY);
+ x = read(0, buf, sizeof(wpi));
+
+ if (x < (int)sizeof(wpi)) {
+ getCurrentTime();
+ debug(42, 0) ("pingerOpen: read: FD 0: %s\n", xstrerror());
+ write(1, "ERR\n", 4);
+ exit(1);
+ }
+
+ xmemcpy(&wpi, buf, sizeof(wpi));
+
+ write(1, "OK\n", 3);
+ x = read(0, buf, sizeof(PS));
+
+ if (x < (int)sizeof(PS)) {
+ getCurrentTime();
+ debug(42, 0) ("pingerOpen: read: FD 0: %s\n", xstrerror());
+ write(1, "ERR\n", 4);
+ exit(1);
+ }
+
+ xmemcpy(&PS, buf, sizeof(PS));
+#endif
if ((proto = getprotobyname("icmp")) == 0) {
debug(42, 0) ("pingerOpen: unknown protocol: icmp\n");
icmp_ident = getpid() & 0xffff;
debug(42, 0) ("pinger: ICMP socket opened\n");
+#ifdef _SQUID_MSWIN_
+
+ socket_to_squid =
+ WSASocket(FROM_PROTOCOL_INFO, FROM_PROTOCOL_INFO, FROM_PROTOCOL_INFO,
+ &wpi, 0, 0);
+
+ if (socket_to_squid == -1) {
+ getCurrentTime();
+ debug(42, 0) ("pingerOpen: WSASocket: %s\n", xstrerror());
+ write(1, "ERR\n", 4);
+ exit(1);
+ }
+
+ x = connect(socket_to_squid, (struct sockaddr *) &PS, sizeof(PS));
+
+ if (SOCKET_ERROR == x) {
+ getCurrentTime();
+ debug(42, 0) ("pingerOpen: connect: %s\n", xstrerror());
+ write(1, "ERR\n", 4);
+ exit(1);
+ }
+
+ write(1, "OK\n", 3);
+ memset(buf, 0, sizeof(buf));
+ x = recv(socket_to_squid, buf, sizeof(buf), 0);
+
+ if (x < 3) {
+ debug(42, 0) ("icmpOpen: recv: %s\n", xstrerror());
+ exit(1);
+ }
+
+ x = send(socket_to_squid, buf, strlen(buf), 0);
+
+ if (x < 3 || strncmp("OK\n", buf, 3)) {
+ debug(42, 0) ("icmpOpen: recv: %s\n", xstrerror());
+ exit(1);
+ }
+
+ getCurrentTime();
+ debug(42, 0) ("pinger: Squid socket opened\n");
+#endif
}
void
pingerClose(void)
{
close(icmp_sock);
+#ifdef _SQUID_MSWIN_
+
+ shutdown(socket_to_squid, SD_BOTH);
+ close(socket_to_squid);
+ socket_to_squid = -1;
+#endif
+
icmp_sock = -1;
icmp_ident = 0;
}
sum = (sum >> 16) + (sum & 0xffff);
sum += (sum >> 16);
- answer = ~sum;
+ answer = (unsigned short) ~sum;
return (answer);
}
int n;
int guess_size;
memset(&pecho, '\0', sizeof(pecho));
- n = recv(0, (char *) &pecho, sizeof(pecho), 0);
+ n = recv(socket_from_squid, (char *) &pecho, sizeof(pecho), 0);
if (n < 0)
return n;
{
int len = sizeof(pingerReplyData) - MAX_PKT_SZ + preply->psize;
- if (send(1, (char *) preply, len, 0) < 0) {
+ if (send(socket_to_squid, (char *) preply, len, 0) < 0) {
debug(50, 0) ("pinger: send: %s\n", xstrerror());
+ pingerClose();
exit(1);
}
}
_db_init(NULL, debug_args);
for (;;) {
- tv.tv_sec = 10;
+ tv.tv_sec = PINGER_TIMEOUT;
tv.tv_usec = 0;
FD_ZERO(&R);
- FD_SET(0, &R);
+ FD_SET(socket_from_squid, &R);
FD_SET(icmp_sock, &R);
x = select(icmp_sock + 1, &R, NULL, NULL, &tv);
getCurrentTime();
- if (x < 0)
+ if (x < 0) {
+ pingerClose();
exit(1);
+ }
- if (FD_ISSET(0, &R))
+ if (FD_ISSET(socket_from_squid, &R))
if (pingerReadRequest() < 0) {
debug(42, 0) ("Pinger exiting.\n");
+ pingerClose();
exit(1);
}
if (FD_ISSET(icmp_sock, &R))
pingerRecv();
- if (10 + last_check_time < squid_curtime) {
- if (send(1, (char *) &tv, 0, 0) < 0)
+ if (PINGER_TIMEOUT + last_check_time < squid_curtime) {
+ if (send(socket_to_squid, (char *) &tv, 0, 0) < 0) {
+ pingerClose();
exit(1);
+ }
last_check_time = squid_curtime;
}
}
/* NOTREACHED */
+ return 0;
}
#else
projects / thirdparty / squid.git / commitdiff
