4.3BSD - /usr/src/usr.bin/uucp/aculib/bsdtcp.c

   1: #ifndef lint
   2: static char sccsid[] = "@(#)bsdtcp.c	4.3 (Berkeley) 6/7/86";
   3: #endif
   4: 
   5: #include "../condevs.h"
   6: #ifdef BSDTCP
   7: #include <netdb.h>
   8: #include <sys/socket.h>
   9: #include <netinet/in.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 = -1, 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:         bsdtcpcls(s);
  42:         logent("tcpopen", "TIMEOUT");
  43:         return CF_DIAL;
  44:     }
  45: 
  46:     bzero((char *)&hisctladdr, sizeof (hisctladdr));
  47:     hp = gethostbyname(flds[F_PHONE]);
  48:     if (hp == NULL) {
  49:         logent("tcpopen","UNKNOWN HOST");
  50:         return CF_DIAL;
  51:     }
  52:     signal(SIGALRM, alarmtr);
  53:     alarm(30);
  54:     hisctladdr.sin_family = hp->h_addrtype;
  55: #ifdef BSD2_9
  56:     s = socket(SOCK_STREAM, 0, &hisctladdr, 0);
  57: #else BSD4_2
  58:     s = socket(hp->h_addrtype, SOCK_STREAM, 0);
  59: #endif BSD4_2
  60:     if (s < 0)
  61:         goto bad;
  62: #ifndef BSD2_9
  63:     if (bind(s, (char *)&hisctladdr, sizeof (hisctladdr), 0) < 0)
  64:         goto bad;
  65: #endif BSD2_9
  66:     bcopy(hp->h_addr, (char *)&hisctladdr.sin_addr, hp->h_length);
  67:     hisctladdr.sin_port = port;
  68: #ifdef BSD2_9
  69:     if (connect(s, (char *)&hisctladdr) < 0)
  70: #else BSD4_2
  71:     if (connect(s, (char *)&hisctladdr, sizeof (hisctladdr), 0) < 0)
  72: #endif BSD4_2
  73:         goto bad;
  74:     alarm(0);
  75:     CU_end = bsdtcpcls;
  76:     return s;
  77: bad:
  78:     alarm(0);
  79:     bsdtcpcls(s);
  80:     DEBUG(5, "tcpopen failed: errno %d\n", errno);
  81:     logent(sys_errlist[errno], _FAILED);
  82:     return CF_DIAL;
  83: }
  84: 
  85: /*
  86:  * bsdtcpcls -- close tcp connection
  87:  */
  88: bsdtcpcls(fd)
  89: register int fd;
  90: {
  91:     DEBUG(4, "TCP CLOSE called\n", 0);
  92:     if (fd > 0) {
  93:         close(fd);
  94:         DEBUG(4, "closed fd %d\n", fd);
  95:     }
  96: }
  97: #endif BSDTCP

Defined functions

Defined variables