Index: pinger.c =================================================================== RCS file: /cvsroot/squid/squid/src/pinger.c,v retrieving revision 1.5 diff -u -p -r1.5 pinger.c --- pinger.c 6 Oct 2002 02:33:41 -0000 1.5 +++ pinger.c 13 Oct 2002 13:05:30 -0000 @@ -37,19 +37,92 @@ #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 +#include +#include +#include + +#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 +#include + +#define PINGER_TIMEOUT 5 + +static SOCKET socket_to_squid = -1; +#define socket_from_squid socket_to_squid + +#else /* _SQUID_CYGWIN_ */ + #include #include #include #include +#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 @@ -118,11 +191,45 @@ static void pingerRecv(void); 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 < 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 < 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"); exit(1); @@ -134,12 +241,50 @@ pingerOpen(void) } 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 == INVALID_SOCKET) { + 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; } @@ -267,7 +412,7 @@ in_cksum(unsigned short *ptr, int size) } sum = (sum >> 16) + (sum & 0xffff); sum += (sum >> 16); - answer = ~sum; + answer = (unsigned short) ~sum; return (answer); } @@ -307,7 +452,7 @@ pingerReadRequest(void) 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; if (0 == n) { @@ -334,8 +479,9 @@ static void pingerSendtoSquid(pingerReplyData * preply) { 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); } } @@ -376,25 +522,30 @@ main(int argc, char *argv[]) _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; } }