projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 555ae7de RC |
1 | #ifndef lint |
| 2 | static char sccsid[] = "@(#)bsdtcp.c 4.1 (Berkeley) %G%"; | |
| 3 | #endif | |
| 4 | ||
| 5 | #include "../condevs.h" | |
| 6 | #ifdef BSDTCP | |
| 7 | #include <sys/socket.h> | |
| 8 | #include <netinet/in.h> | |
| 9 | #include <netdb.h> | |
| 10 | ||
| 11 | /* | |
| 12 | * bsdtcpopn -- make a tcp connection | |
| 13 | * | |
| 14 | * return codes: | |
| 15 | * >0 - file number - ok | |
| 16 | * FAIL - failed | |
| 17 | */ | |
| 18 | ||
| 19 | bsdtcpopn(flds) | |
| 20 | register char *flds[]; | |
| 21 | { | |
| 22 | struct servent *sp; | |
| 23 | struct hostent *hp; | |
| 24 | struct sockaddr_in hisctladdr; | |
| 25 | int s, port; | |
| 26 | extern int errno; | |
| 27 | extern char *sys_errlist[]; | |
| 28 | ||
| 29 | sp = getservbyname(flds[F_CLASS], "tcp"); | |
| 30 | if (sp == NULL) { | |
| 31 | port = htons(atoi(flds[F_CLASS])); | |
| 32 | if (port == 0) { | |
| 33 | logent(_FAILED, "UNKNOWN PORT NUMBER"); | |
| 34 | return CF_SYSTEM; | |
| 35 | } | |
| 36 | } else | |
| 37 | port = sp->s_port; | |
| 38 | DEBUG(4, "bsdtcpopn host %s, ", flds[F_PHONE]); | |
| 39 | DEBUG(4, "port %d\n", ntohs(port)); | |
| 40 | if (setjmp(Sjbuf)) { | |
| 41 | logent("tcpopen", "TIMEOUT"); | |
| 42 | return CF_DIAL; | |
| 43 | } | |
| 44 | ||
| 45 | bzero((char *)&hisctladdr, sizeof (hisctladdr)); | |
| 46 | hp = gethostbyname(flds[F_PHONE]); | |
| 47 | if (hp == NULL) { | |
| 48 | logent("tcpopen","UNKNOWN HOST"); | |
| 49 | return CF_DIAL; | |
| 50 | } | |
| 51 | signal(SIGALRM, alarmtr); | |
| 52 | alarm(30); | |
| 53 | hisctladdr.sin_family = hp->h_addrtype; | |
| 54 | s = socket(hp->h_addrtype, SOCK_STREAM, 0, 0); | |
| 55 | if (s < 0) | |
| 56 | goto bad; | |
| 57 | if (bind(s, (char *)&hisctladdr, sizeof (hisctladdr), 0) < 0) | |
| 58 | goto bad; | |
| 59 | bcopy(hp->h_addr, (char *)&hisctladdr.sin_addr, hp->h_length); | |
| 60 | hisctladdr.sin_port = port; | |
| 61 | if (connect(s, (char *)&hisctladdr, sizeof (hisctladdr), 0) < 0) | |
| 62 | goto bad; | |
| 63 | alarm(0); | |
| 64 | CU_end = bsdtcpcls; | |
| 65 | return s; | |
| 66 | bad: | |
| 67 | alarm(0); | |
| 68 | close(s); | |
| 69 | DEBUG(5, "tcpopen failed: errno %d\n", errno); | |
| 70 | logent(sys_errlist[errno], _FAILED); | |
| 71 | return CF_DIAL; | |
| 72 | } | |
| 73 | ||
| 74 | /* | |
| 75 | * bsdtcpcls -- close tcp connection | |
| 76 | */ | |
| 77 | bsdtcpcls(fd) | |
| 78 | register int fd; | |
| 79 | { | |
| 80 | DEBUG(4, "TCP CLOSE called\n", 0); | |
| 81 | if (fd > 0) { | |
| 82 | close(fd); | |
| 83 | DEBUG(4, "closed fd %d\n", fd); | |
| 84 | } | |
| 85 | } | |
| 86 | #endif BSDTCP |