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Annotation of 43BSD/usr.bin/uucp/aculib/bsdtcp.c, revision 1.1.1.1

1.1       root        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

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