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