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Annotation of 43BSDTahoe/usr.bin/uucp/aculib/bsdtcp.c, revision 1.1

1.1     ! root        1: #ifndef lint
        !             2: static char sccsid[] = "@(#)bsdtcp.c   4.4 (Berkeley) 2/24/88";
        !             3: #endif
        !             4: 
        !             5: #include "../condevs.h"
        !             6: #include <netdb.h>
        !             7: #include <sys/socket.h>
        !             8: #include <netinet/in.h>
        !             9: 
        !            10: /*
        !            11:  *     bsdtcpopn -- make a tcp connection
        !            12:  *
        !            13:  *     return codes:
        !            14:  *             >0 - file number - ok
        !            15:  *             FAIL - failed
        !            16:  */
        !            17: 
        !            18: bsdtcpopn(flds)
        !            19: register char *flds[];
        !            20: {
        !            21:        struct servent *sp;
        !            22:        struct hostent *hp;
        !            23:        struct  sockaddr_in hisctladdr;
        !            24:        int s = -1, port;
        !            25:        extern int errno;
        !            26:        extern char *sys_errlist[];
        !            27: 
        !            28:        sp = getservbyname(flds[F_CLASS], "tcp");
        !            29:        if (sp == NULL) {
        !            30:                port = htons(atoi(flds[F_CLASS]));
        !            31:                if (port == 0) {
        !            32:                        logent(_FAILED, "UNKNOWN PORT NUMBER");
        !            33:                        return CF_SYSTEM;
        !            34:                }
        !            35:        } else
        !            36:                port = sp->s_port;
        !            37:        DEBUG(4, "bsdtcpopn host %s, ", flds[F_PHONE]);
        !            38:        DEBUG(4, "port %d\n", ntohs(port));
        !            39:        if (setjmp(Sjbuf)) {
        !            40:                bsdtcpcls(s);
        !            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(MAXMSGTIME*2);
        !            53:        hisctladdr.sin_family = hp->h_addrtype;
        !            54: #ifdef BSD2_9
        !            55:        s = socket(SOCK_STREAM, 0, &hisctladdr, 0);
        !            56: #else BSD4_2
        !            57:        s = socket(hp->h_addrtype, SOCK_STREAM, 0);
        !            58: #endif BSD4_2
        !            59:        if (s < 0)
        !            60:                goto bad;
        !            61: #ifndef BSD2_9
        !            62:        if (bind(s, (char *)&hisctladdr, sizeof (hisctladdr), 0) < 0)
        !            63:                goto bad;
        !            64: #endif BSD2_9
        !            65:        bcopy(hp->h_addr, (char *)&hisctladdr.sin_addr, hp->h_length);
        !            66:        hisctladdr.sin_port = port;
        !            67: #ifdef BSD2_9
        !            68:        if (connect(s, (char *)&hisctladdr) < 0)
        !            69: #else BSD4_2
        !            70:        if (connect(s, (char *)&hisctladdr, sizeof (hisctladdr), 0) < 0)
        !            71: #endif BSD4_2
        !            72:                goto bad;
        !            73:        alarm(0);
        !            74:        CU_end = bsdtcpcls;
        !            75:        return s;
        !            76: bad:
        !            77:        alarm(0);
        !            78:        bsdtcpcls(s);
        !            79:        DEBUG(5, "tcpopen failed: errno %d\n", errno);
        !            80:        logent(sys_errlist[errno], _FAILED);
        !            81:        return CF_DIAL;
        !            82: }
        !            83: 
        !            84: /*
        !            85:  * bsdtcpcls -- close tcp connection
        !            86:  */
        !            87: bsdtcpcls(fd)
        !            88: register int fd;
        !            89: {
        !            90:        DEBUG(4, "TCP CLOSE called\n", 0);
        !            91:        if (fd > 0) {
        !            92:                close(fd);
        !            93:                DEBUG(4, "closed fd %d\n", fd);
        !            94:        }
        !            95: }

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