libnsl/dial/callers.c

	callers.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*  Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/*    All Rights Reserved   */


/*
 * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#pragma ident   "%Z%%M% %I% %E% SMI"

#include "uucp.h"
#include <rpc/trace.h>

#ifdef BSD4_2
#include <netdb.h>
#include <netinet/in.h>
#include <sys/socket.h>
#endif
#ifdef UNET
#include  "UNET/unetio.h"
#include  "UNET/tcp.h"
#endif


EXTERN void alarmtr();
EXTERN jmp_buf Sjbuf;
EXTERN char *fdig(), *strecpy();
EXTERN int interface();
EXTERN int fd_mklock(), fd_cklock(), chat(), getdialline();
EXTERN void fixline(), fd_rmlock();
static void translate();
static int gdial();
EXTERN int  Modemctrl;
EXTERN unsigned connecttime;
EXTERN int (*Setup)();

extern int  _fcntl(int, int, ...);

/*
 *  to add a new caller:
 *  declare the function that knows how to call on the device,
 *  add a line to the callers table giving the name of the device
 *  (from Devices file) and the name of the function
 *  add the function to the end of this file
 */

#ifdef DIAL801
EXTERN int  dial801();
EXTERN int  open801();
#endif

#ifdef DATAKIT
EXTERN int  dkcall();
#endif /* DATAKIT */

#ifdef V8
int Dialout();
#endif

#ifdef TCP
GLOBAL int  unetcall();
GLOBAL int  tcpcall();
#endif /* TCP */

#ifdef SYTEK
int sytcall();
#endif /* SYTEK */

#ifdef TLI
EXTERN int  tlicall();
#endif /* TLI */

static struct caller Caller[] = {

#ifdef DIAL801
    {"801",     dial801},
    {"212",     dial801},
#endif /* DIAL801 */

#ifdef V8
    {"Dialout", Dialout},   /* ditto but using dialout(III) */
#endif

#ifdef TCP
#ifdef BSD4_2
    {"TCP",     tcpcall},   /* 4.2BSD sockets */
#else /* !BSD4_2 */
#ifdef UNET
    {"TCP",     unetcall},  /* 3com implementation of tcp */
    {"Unetserver",  unetcall},
#endif /* UNET */
#endif /* BSD4_2 */
#endif /* TCP */

#ifdef DATAKIT
    {"DK",      dkcall},    /* standard AT&T DATAKIT VCS caller */
#endif /* DATAKIT */

#ifdef SYTEK
    {"Sytek",   sytcall},   /* untested but should work */
#endif /* SYTEK */

#ifdef TLI
    {"TLI",     tlicall},   /* AT&T Transport Layer Interface */
#ifdef TLIS
    {"TLIS",    tlicall},   /* AT&T Transport Layer Interface */
#endif /*  TLIS  */
#endif /* TLI */

    {NULL,      NULL}       /* this line must be last */
};

/*
 *  exphone - expand phone number for given prefix and number
 *
 *  return code - none
 */

static void
exphone(in, out)
char *in, *out;
{
    FILE *fn;
    char pre[MAXPH], npart[MAXPH], tpre[MAXPH], p[MAXPH];
    char buf[BUFSIZ];
    char *s1;

    trace1(TR_exphone, 0);
    if (!isalpha(*in)) {
        (void) strcpy(out, in);
        trace1(TR_exphone, 1);
        return;
    }

    s1=pre;
    while (isalpha(*in))
        *s1++ = *in++;
    *s1 = NULLCHAR;
    s1 = npart;
    while (*in != NULLCHAR)
        *s1++ = *in++;
    *s1 = NULLCHAR;

    tpre[0] = NULLCHAR;
    fn = fopen(DIALCODES, "r");
    if (fn != NULL) {
        while (fgets(buf, BUFSIZ, fn)) {
            if (sscanf(buf, "%s%s", p, tpre) < 1)
                continue;
            if (EQUALS(p, pre))
                break;
            tpre[0] = NULLCHAR;
        }
        fclose(fn);
    }

    (void) strcpy(out, tpre);
    (void) strcat(out, npart);
    trace1(TR_exphone, 1);
    return;
}

/*
 * repphone - Replace \D and \T sequences in arg with phone
 * expanding and translating as appropriate.
 */
static char *
repphone(arg, phone, trstr)
register char *arg, *phone, *trstr;
{
    static char *pbuf;  /* dynamically allocated below */
    register char *fp, *tp;

    trace1(TR_repphone, 0);
    if (pbuf == NULL) {
        pbuf = (char *)malloc(2*(MAXPH+2));
        if (pbuf == NULL)
            return (arg);
    }
    for (tp=pbuf; *arg; arg++) {
        if (*arg != '\\') {
            *tp++ = *arg;
            continue;
        } else {
            switch (*(arg+1)) {
            case 'T':
                exphone(phone, tp);
                translate(trstr, tp);
                for (; *tp; tp++)
                    ;
                arg++;
                break;
            case 'D':
                for (fp=phone; *tp = *fp++; tp++)
                    ;
                arg++;
                break;
            default:
                *tp++ = *arg;
                break;
            }
        }
    }
    *tp = '\0';
    trace1(TR_repphone, 1);
    return (pbuf);
}

static u_int saved_mode;
static char saved_dcname[20];

/*
 * processdev - Process a line from the Devices file
 *
 * return codes:
 *  file descriptor  -  succeeded
 *  FAIL  -  failed
 */
GLOBAL int
processdev(flds, dev)
register char *flds[], *dev[];
{
    int dcf = -1;
    register struct caller  *ca;
    char *args[D_MAX+1], dcname[20];
    register char **sdev;
    EXTERN int pop_push();
    EXTERN void  setdevcfg();
    int nullfd;
    char *phonecl;          /* clear phone string */
    char phoneex[2*(MAXPH+2)];  /* expanded phone string */
    EXTERN void ttygenbrk();
    struct termio tty_orig;
    int ret_orig = -1;

    trace1(TR_processdev, 0);
    sdev = dev;
    /*  set up default "break" routine  */
    genbrk = ttygenbrk;

    /*  initialize Devconfig info   */
    DEBUG(5, "processdev: calling setdevcfg(%s, ", Progname);
    DEBUG(5, "%s)\n", flds[F_TYPE]);
    setdevcfg(Progname, flds[F_TYPE]);

    for (ca = Caller; ca->CA_type != NULL; ca++) {
        /* This will find built-in caller functions */
        if (EQUALS(ca->CA_type, dev[D_CALLER])) {
            DEBUG(5, "Internal caller type %s\n", dev[D_CALLER]);
            if (dev[D_ARG] == NULL) {
                /* if NULL - assume translate */
                dev[D_ARG+1] = NULL;    /* needed for for loop later to mark the end */
                dev[D_ARG] = "\\T";
            }
            dev[D_ARG] = repphone(dev[D_ARG], flds[F_PHONE], "");
            if ((dcf = (*(ca->CA_caller))(flds, dev)) < 0) {
                trace1(TR_processdev, 1);
                return (dcf) ;
            }
            if (interface(ca->CA_type)) {
                DEBUG(5, "interface(%s) failed", ca->CA_type);
                Uerror = SS_DEVICE_FAILED;
                /*  restore vanilla unix interface  */
                (void)interface("UNIX");
                trace1(TR_processdev, 1);
                return (FAIL);
            }
            dev += 2; /* Skip to next CALLER and ARG */
            break;
        }
    }
    if (dcf == -1) {
        /* Here if not a built-in caller function */

        /* We do locking (file and advisory) after open */

        /*
         * Open the line
         */
        if (*dev[D_LINE] != '/') {
            (void) sprintf(dcname, "/dev/%s", dev[D_LINE]);
        } else {
            (void) strcpy(dcname, dev[D_LINE]);
        }
        /* take care of the possible partial open fd */
        (void) close(nullfd = open("/", O_RDONLY));
        if (setjmp(Sjbuf)) {
            (void) close(nullfd);
            DEBUG(1, "generic open timeout\n%s", "");
            logent("generic open", "TIMEOUT");
            Uerror = SS_CANT_ACCESS_DEVICE;
            goto bad;
        }
        (void) signal(SIGALRM, alarmtr);
        (void) alarm(10);
        if (Modemctrl) {
            DEBUG(7, "opening with O_NDELAY set\n%s", "");
            dcf = open(dcname, (O_RDWR | O_NDELAY) );
            saved_mode = O_RDWR | O_NDELAY;
        } else {
            dcf = open(dcname, O_RDWR );
            saved_mode = O_RDWR;
        }
        strcpy(saved_dcname, dcname);
        (void) alarm(0);
        if (dcf < 0) {
            DEBUG(1, "generic open failed, errno = %d\n", errno);
            (void) close(nullfd);
            logent("generic open", "FAILED");
            Uerror = SS_CANT_ACCESS_DEVICE;
            goto bad;
        }

        /* check locks BEFORE modifying the stream */

        if (fd_mklock(dcf) != SUCCESS) {
            DEBUG(1, "failed to lock device %s\n", dcname);
            Uerror = SS_LOCKED_DEVICE;
            goto bad;
        }

        if (Modemctrl) {
            DEBUG(7, "clear O_NDELAY\n%s", "");
            if (_fcntl(dcf, F_SETFL,
                (_fcntl(dcf, F_GETFL, 0) & ~O_NDELAY)) < 0) {
                DEBUG(7, "clear O_NDELAY failed, errno %d\n", errno);
                Uerror = SS_DEVICE_FAILED;
                goto bad;
            }
        }
    }

    if ((*Setup)(MASTER, &dcf, &dcf)) {
        /*  any device|system lock files we should remove?  */
        DEBUG(5, "MASTER Setup failed%s", "");
        Uerror = SS_DEVICE_FAILED;
        goto bad;
    }

    /* configure any requested streams modules */
    if (!pop_push(dcf)) {
        DEBUG(5, "STREAMS module configuration failed%s\n","");
        Uerror = SS_DEVICE_FAILED;
        goto bad;
    }

    /* save initial state of line in case script fails */
    ret_orig = ioctl(dcf, TCGETA, &tty_orig);

    /* use sdev[] since dev[] is incremented for internal callers */
    fixline(dcf, atoi(fdig(sdev[D_CLASS])), D_DIRECT);

    /*
     * Now loop through the remaining callers and chat
     * according to scripts in dialers file.
     */
    for (; dev[D_CALLER] != NULL; dev += 2) {
        register int w;
        /*
         * Scan Dialers file to find an entry
         */
        if ((w = gdial(dev[D_CALLER], args, D_MAX)) < 1) {
            logent("generic call to gdial", "FAILED");
            Uerror = SS_CANT_ACCESS_DEVICE;
            goto bad;
        }
        if (w <= 2) /* do nothing - no chat */
            break;
        /*
         * Translate the phone number
         */
        if (dev[D_ARG] == NULL) {
            /* if NULL - assume no translation */
            dev[D_ARG+1] = NULL; /* needed for for loop to mark the end */
            dev[D_ARG] = "\\D";
        }

        phonecl = repphone(dev[D_ARG], flds[F_PHONE], args[1]);
        exphone(phonecl, phoneex);
        translate(args[1], phoneex);
        /*
         * Chat
         */
        if (chat(w-2, &args[2], dcf, phonecl, phoneex) != SUCCESS) {
            CDEBUG(5, "\nCHAT gdial(%s) FAILED\n", dev[D_CALLER]);
            Uerror = SS_CHAT_FAILED;
            goto bad;
        }
    }
    /*
     * Success at last!
     */
    strcpy(Dc, sdev[D_LINE]);
    trace1(TR_processdev, 1);
    return (dcf);
bad:
    if (dcf >= 0) {
        /* reset line settings if we got them in the beginning */
        if (ret_orig == 0)
            (void) ioctl(dcf, TCSETAW, &tty_orig);
        fd_rmlock(dcf);
        (void)close(dcf);
    }
    /*  restore vanilla unix interface  */
    (void)interface("UNIX");
    trace1(TR_processdev, 1);
    return (FAIL);
}

/*
 * clear_hup()  clear the hangup state of the given device
 */
GLOBAL int
clear_hup(dcf)
int dcf;
{
    int ndcf;
    if ((ndcf = open(saved_dcname, saved_mode)) < 0) {
        return (FAIL);
    }
    if (ndcf != dcf) {
        close(ndcf);
    }
    return (SUCCESS);
}


/*
 * translate the pairs of characters present in the first
 * string whenever the first of the pair appears in the second
 * string.
 */
static void
translate(ttab, str)
register char *ttab, *str;
{
    register char *s;
    trace1(TR_translate, 0);

    for (;*ttab && *(ttab+1); ttab += 2)
        for (s=str;*s;s++)
            if (*ttab == *s)
                *s = *(ttab+1);
    trace1(TR_translate, 1);
    return;
}

#define MAXLINE 512
/*
 * Get the information about the dialer.
 * gdial(type, arps, narps)
 *  type    -> type of dialer (e.g., penril)
 *  arps    -> array of pointers returned by gdial
 *  narps   -> number of elements in array returned by gdial
 * Return value:
 *  -1  -> Can't open DIALERFILE
 *  0   -> requested type not found
 *  >0  -> success - number of fields filled in
 */
static int
gdial(type, arps, narps)
register char *type, *arps[];
register int narps;
{
    static char *info;  /* dynamically allocated MAXLINE */
    int na;
    EXTERN void dialreset();
    EXTERN char * currdial();

    trace2(TR_gdial, 0, narps);
    DEBUG(2, "gdial(%s) called\n", type);
    if (info == NULL) {
        info = (char *)malloc(MAXLINE);
        if (info == NULL) {
            DEBUG(1, "malloc failed for info in gdial\n", 0);
            return (0);
        }
    }
    while (getdialline(info, MAXLINE)) {
        if ((info[0] == '#') || (info[0] == ' ') ||
            (info[0] == '\t') || (info[0] == '\n'))
            continue;
        if ((na = getargs(info, arps, narps)) == 0)
            continue;
        if (EQUALS(arps[0], type)) {
            DEBUG(5, "Trying caller script '%s'", type);
            DEBUG(5, " from '%s'.\n", currdial());
            dialreset();
            bsfix(arps);
            trace2(TR_gdial, 1, narps);
            return (na);
        }
    }
    DEBUG(1, "%s not found in Dialers file\n", type);
    dialreset();
    trace2(TR_gdial, 1, narps);
    return (0);
}


#ifdef DATAKIT

/*
 *  dkcall(flds, dev)   make a DATAKIT VCS connection
 *                DATAKIT VCS is a trademark of AT&T
 *
 *  return codes:
 *      >0 - file number - ok
 *      FAIL - failed
 */

#include "dk.h"
EXTERN int dkdial();

/*ARGSUSED*/
GLOBAL int
dkcall(flds, dev)
char *flds[], *dev[];
{
    register fd;
#ifdef V8
    extern int cdkp_ld;
#endif

    char    dialstring[64];
    EXTERN  void dkbreak();

    trace1(TR_dkcall, 0);
    strcpy(dialstring, dev[D_ARG]);
    DEBUG(4, "dkcall(%s)\n", dialstring);


#ifdef V8
    if (setjmp(Sjbuf)) {
        Uerror = SS_DIAL_FAILED;
        trace1(TR_dkcall, 1);
        return (FAIL);
    }

    (void) signal(SIGALRM, alarmtr);
    (void) alarm(connecttime);
    DEBUG(4, "tdkdial(%s", flds[F_PHONE]);
    DEBUG(4, ", %d)\n", atoi(dev[D_CLASS]));
        if ((fd = tdkdial(flds[F_PHONE], atoi(dev[D_CLASS]))) >= 0)
        if (dkproto(fd, cdkp_ld) < 0)
           {
            close(fd);
            fd = -1;
           }
    (void) alarm(0);
#else
    fd = dkdial(dialstring);
#endif

    (void) strcpy(Dc, "DK");
    if (fd < 0) {
        Uerror = SS_DIAL_FAILED;
        trace1(TR_dkcall, 1);
        return (FAIL);
    }
    else {
        genbrk = dkbreak;
        trace1(TR_dkcall, 1);
        return (fd);
    }
}

#endif /* DATAKIT */

#ifdef TCP

/*
 *  tcpcall(flds, dev)  make ethernet/socket connection
 *
 *  return codes:
 *      >0 - file number - ok
 *      FAIL - failed
 */

#ifndef BSD4_2
/*ARGSUSED*/
GLOBAL int
tcpcall(flds, dev)
char    *flds[], *dev[];
{
    trace1(TR_tcpcall, 0);
    Uerror = SS_NO_DEVICE;
    trace1(TR_tcpcall, 1);
    return (FAIL);
}
#else /* BSD4_2 */
GLOBAL int
tcpcall(flds, dev)
char *flds[], *dev[];
{
    int ret;
    short port;
    struct servent *sp;
    struct hostent *hp;
    struct sockaddr_in sin;

    trace1(TR_tcpcall, 0);
    port = atoi(dev[D_ARG]);
    if (port == 0) {
        sp = getservbyname("uucp", "tcp");
        ASSERT(sp != NULL, "No uucp server", 0, 0);
        port = sp->s_port;
    }
    else port = htons(port);
    hp = gethostbyname(flds[F_NAME]);
    if (hp == NULL) {
        logent("tcpopen", "no such host");
        Uerror = SS_NO_DEVICE;
        trace1(TR_tcpcall, 1);
        return (FAIL);
    }
    DEBUG(4, "tcpdial host %s, ", flds[F_NAME]);
    DEBUG(4, "port %d\n", ntohs(port));

    ret = socket(AF_INET, SOCK_STREAM, 0);
    if (ret < 0) {
        char *errstr;

        if ((errstr = strerror(errno)) != (char *) NULL) {
            DEBUG(5, "no socket: %s\n", errstr);
            logent("no socket", errstr);
        }
        else {
            DEBUG(5, "no socket, errno %d\n", errno);
            logent("tcpopen", "NO SOCKET");
        }
        Uerror = SS_NO_DEVICE;
        trace1(TR_tcpcall, 1);
        return (FAIL);
    }
    sin.sin_family = hp->h_addrtype;
    bcopy(hp->h_addr, (caddr_t)&sin.sin_addr, hp->h_length);
    sin.sin_port = port;
    if (setjmp(Sjbuf)) {
        DEBUG(4, "timeout tcpopen\n%s", "");
        logent("tcpopen", "TIMEOUT");
        Uerror = SS_NO_DEVICE;
        trace1(TR_tcpcall, 1);
        return (FAIL);
    }
    (void) signal(SIGALRM, alarmtr);
    (void) alarm(connecttime);
    DEBUG(7, "family: %d\n", sin.sin_family);
    DEBUG(7, "port: %d\n", sin.sin_port);
    DEBUG(7, "addr: %08x\n",*((int *) &sin.sin_addr));
    if (connect(ret, (caddr_t)&sin, sizeof (sin)) < 0) {
        char *errstr;

        (void) alarm(0);
        (void) close(ret);
        if ((errstr = strerror(errno)) != (char *) NULL) {
            DEBUG(5, "connect failed: %s\n", errstr);
            logent("connect failed", errstr);
        }
        else {
            DEBUG(5, "connect failed, errno %d\n", errno);
            logent("tcpopen", "CONNECT FAILED");
        }
        Uerror = SS_NO_DEVICE;
        trace1(TR_tcpcall, 1);
        return (FAIL);
    }
    (void) signal(SIGPIPE, SIG_IGN);  /* watch out for broken ipc link...*/
    (void) alarm(0);
    (void) strcpy(Dc, "IPC");
    trace1(TR_tcpcall, 1);
    return (ret);
}

#endif /* BSD4_2 */

/*
 *  unetcall(flds, dev) make ethernet connection
 *
 *  return codes:
 *      >0 - file number - ok
 *      FAIL - failed
 */

#ifndef UNET
GLOBAL int
unetcall(flds, dev)
char    *flds[], *dev[];
{
    trace1(TR_unetcall, 0);
    Uerror = SS_NO_DEVICE;
    trace1(TR_unetcall, 1);
    return (FAIL);
}
#else /* UNET */
GLOBAL int
unetcall(flds, dev)
char *flds[], *dev[];
{
    int ret;
    int port;

    trace1(TR_unetcall, 0);
    port = atoi(dev[D_ARG]);
    DEBUG(4, "unetdial host %s, ", flds[F_NAME]);
    DEBUG(4, "port %d\n", port);
    (void) alarm(connecttime);
    ret = tcpopen(flds[F_NAME], port, 0, TO_ACTIVE, "rw");
    (void) alarm(0);
    endhnent();
    if (ret < 0) {
        DEBUG(5, "tcpopen failed: errno %d\n", errno);
        Uerror = SS_DIAL_FAILED;
        trace1(TR_unetcall, 1);
        return (FAIL);
    }
    (void) strcpy(Dc, "UNET");
    trace1(TR_unetcall, 1);
    return (ret);
}
#endif /* UNET */

#endif /* TCP */

#ifdef SYTEK

/*
 *  sytcall(flds, dev)  make a sytek connection
 *
 *  return codes:
 *      >0 - file number - ok
 *      FAIL - failed
 */

/*ARGSUSED*/
GLOBAL int
sytcall(flds, dev)
char *flds[], *dev[];
{
    int dcr, dcr2, nullfd, ret;
    char dcname[20], command[BUFSIZ];


    trace1(TR_sytcall, 0);
    (void) sprintf(dcname, "/dev/%s", dev[D_LINE]);
    DEBUG(4, "dc - %s, ", dcname);
    dcr = open(dcname, O_WRONLY|O_NDELAY);
    if (dcr < 0) {
        Uerror = SS_DIAL_FAILED;
        DEBUG(4, "OPEN FAILED %s\n", dcname);
        trace1(TR_sytcall, 1);
        return (FAIL);
    }
    if (fd_mklock(dcr) != SUCCESS) {
        (void)close(dcr);
        DEBUG(1, "failed to lock device %s\n", dcname);
        Uerror = SS_LOCKED_DEVICE;
        trace1(TR_sytcall, 1);
        return (FAIL);
    }

    sytfixline(dcr, atoi(fdig(dev[D_CLASS])), D_DIRECT);
    (void) sleep(2);
    DEBUG(4, "Calling Sytek unit %s\n", dev[D_ARG]);
    (void) sprintf(command,"\r\rcall %s\r", dev[D_ARG]);
    ret = (*Write)(dcr, command, strlen(command));
    (void) sleep(1);
    DEBUG(4, "COM1 return = %d\n", ret);
    sytfix2line(dcr);
    (void) close(nullfd = open("/", O_RDONLY));
    (void) signal(SIGALRM, alarmtr);
    if (setjmp(Sjbuf)) {
        DEBUG(4, "timeout sytek open\n%s", "");
        (void) close(nullfd);
        (void) close(dcr2);
        fd_rmlock(dcr);
        (void) close(dcr);
        Uerror = SS_DIAL_FAILED;
        trace1(TR_sytcall, 1);
        return (FAIL);
    }
    (void) alarm(10);
    dcr2 = open(dcname,O_RDWR);
    (void) alarm(0);
    fd_rmlock(dcr);
    (void) close(dcr);
    if (dcr2 < 0) {
        DEBUG(4, "OPEN 2 FAILED %s\n", dcname);
        Uerror = SS_DIAL_FAILED;
        (void) close(nullfd);   /* kernel might think dc2 is open */
        trace1(TR_sytcall, 1);
        return (FAIL);
    }
    if (fd_mklock(dcr2) != SUCCESS) {
        (void)close(dcr2);
        DEBUG(1, "failed to lock device %s\n", dcname);
        Uerror = SS_LOCKED_DEVICE;
        trace1(TR_sytcall, 1);
        return (FAIL);
    }
    trace1(TR_sytcall, 1);
    return (dcr2);
}

#endif /* SYTEK */

#ifdef DIAL801

/*
 *  dial801(flds, dev)  dial remote machine on 801/801
 *  char *flds[], *dev[];
 *
 *  return codes:
 *      file descriptor  -  succeeded
 *      FAIL  -  failed
 *
 *  unfortunately, open801() is different for usg and non-usg
 */

/*ARGSUSED*/
GLOBAL int
dial801(flds, dev)
char *flds[], *dev[];
{
    char dcname[20], dnname[20], phone[MAXPH+2];
    int dcf = -1, speed;

    trace1(TR_dial801, 0);
    (void) sprintf(dnname, "/dev/%s", dev[D_CALLDEV]);
    (void) sprintf(phone, "%s%s", dev[D_ARG]   , ACULAST);
    (void) sprintf(dcname, "/dev/%s", dev[D_LINE]);
    CDEBUG(1, "Use Port %s, ", dcname);
    DEBUG(4, "acu - %s, ", dnname);
    VERBOSE("Trying modem - %s, ", dcname); /* for cu */
    VERBOSE("acu - %s, ", dnname);  /* for cu */
    if (getuid()==0 || GRPCHK(getgid())) {
        CDEBUG(1, "Phone Number  %s\n", phone);
        /* In cu, only give out the phone number to trusted people. */
        VERBOSE("calling  %s:  ", phone);   /* for cu */
    }
    speed = atoi(fdig(dev[D_CLASS]));
    dcf = open801(dcname, dnname, phone, speed);
    if (dcf >= 0) {
            if (fd_mklock(dcf) != SUCCESS) {
            (void) close(dcf);
            DEBUG(5, "fd_mklock line %s failed\n", dev[D_LINE]);
            Uerror = SS_LOCKED_DEVICE;
            trace1(TR_dial801, 1);
            return (FAIL);
        }
        fixline(dcf, speed, D_ACU);
        (void) strcpy(Dc, dev[D_LINE]); /* for later unlock() */
        VERBOSE("SUCCEEDED\n%s", "");
    } else {
        VERBOSE("FAILED\n%s", "");
    }
    trace1(TR_dial801, 1);
    return (dcf);
}


#ifndef ATTSV
/*ARGSUSED*/
GLOBAL int
open801(dcname, dnname, phone, speed)
char *dcname, *dnname, *phone;
{
    int nw, lt, dcf = -1, nullfd, dnf = -1;
    pid_t w_ret, pid = -1;
    unsigned timelim;

    trace1(TR_open801, 0);
    if ((dnf = open(dnname, O_WRONLY)) < 0) {
        DEBUG(5, "can't open %s\n", dnname);
        Uerror = SS_CANT_ACCESS_DEVICE;
        trace1(TR_open801, 1);
        return (FAIL);
    }
    DEBUG(5, "%s is open\n", dnname);

    (void) close(nullfd = open("/dev/null", O_RDONLY));/* partial open hack */
    if (setjmp(Sjbuf)) {
        DEBUG(4, "timeout modem open\n%s", "");
        (void) close(nullfd);
        (void) close(dcf);
        (void) close(dnf);
        logent("801 open", "TIMEOUT");
        if (pid > 0) {
            kill(pid, 9);
            wait((int *) 0);
        }
        Uerror = SS_DIAL_FAILED;
        trace1(TR_open801, 1);
        return (FAIL);
    }
    (void) signal(SIGALRM, alarmtr);
    timelim = 5 * strlen(phone);
    (void) alarm(timelim < connecttime ? connecttime : timelim);
    if ((pid = fork()) == 0) {
        sleep(2);
        nw = (*Write)(dnf, phone, lt = strlen(phone));
        if (nw != lt) {
            DEBUG(4, "ACU write error %d\n", errno);
            logent("ACU write", "FAILED");
            trace1(TR_open801, 1);
            exit(1);
        }
        DEBUG(4, "ACU write ok\n%s", "");
        trace1(TR_open801, 1);
        exit(0);
    }
    /*  open line - will return on carrier */
    dcf = open(dcname, O_RDWR);

    DEBUG(4, "dcf is %d\n", dcf);
    if (dcf < 0) {  /* handle like a timeout */
        (void) alarm(0);
        longjmp(Sjbuf, 1);
    }

    /* modem is open */
    while ((w_ret = wait(&lt)) != pid)
        if (w_ret == -1 && errno != EINTR) {
            DEBUG(4, "Wait failed errno=%d\n", errno);
            (void) close(dcf);
            (void) close(dnf);
            Uerror = SS_DIAL_FAILED;
            trace1(TR_open801, 1);
            return (FAIL);
        }
    (void) alarm(0);

    (void) close(dnf);  /* no reason to keep the 801 open */
    if (lt != 0) {
        DEBUG(4, "Fork Stat %o\n", lt);
        (void) close(dcf);
        Uerror = SS_DIAL_FAILED;
        trace1(TR_open801, 1);
        return (FAIL);
    }
    trace1(TR_open801, 1);
    return (dcf);
}

#else /* ATTSV */

GLOBAL int
open801(dcname, dnname, phone, speed)
char *dcname, *dnname, *phone;
{
    int nw, lt, dcf = -1, nullfd, dnf = -1, ret;
    unsigned timelim;

    trace1(TR_open801, 0);
    (void) close(nullfd = open("/", O_RDONLY)); /* partial open hack */
    if (setjmp(Sjbuf)) {
        DEBUG(4, "DN write %s\n", "timeout");
        (void) close(dnf);
        (void) close(dcf);
        (void) close(nullfd);
        Uerror = SS_DIAL_FAILED;
        trace1(TR_open801, 1);
        return (FAIL);
    }
    (void) signal(SIGALRM, alarmtr);
    timelim = 5 * strlen(phone);
    (void) alarm(timelim < connecttime ? connecttime : timelim);

    if ((dnf = open(dnname, O_WRONLY)) < 0) {
        DEBUG(5, "can't open %s\n", dnname);
        Uerror = SS_CANT_ACCESS_DEVICE;
        trace1(TR_open801, 1);
        return (FAIL);
    }
    DEBUG(5, "%s is open\n", dnname);
    if (fd_mklock(dnf) != SUCCESS) {
        (void)close(dnf);
        DEBUG(1, "failed to lock device %s\n", dnname);
        Uerror = SS_LOCKED_DEVICE;
    }
    if ((dcf = open(dcname, O_RDWR | O_NDELAY)) < 0) {
        DEBUG(5, "can't open %s\n", dcname);
        Uerror = SS_CANT_ACCESS_DEVICE;
        trace1(TR_open801, 1);
        return (FAIL);
    }
    if (fd_mklock(dcf) != SUCCESS) {
        (void)close(dcf);
        DEBUG(1, "failed to lock device %s\n", dcname);
        Uerror = SS_LOCKED_DEVICE;
        trace1(TR_open801, 1);
        return (FAIL);
    }

    DEBUG(4, "dcf is %d\n", dcf);
    fixline(dcf, speed, D_ACU);
    nw = (*Write)(dnf, phone, lt = strlen(phone));
    if (nw != lt) {
        (void) alarm(0);
        DEBUG(4, "ACU write error %d\n", errno);
        (void) close(dnf);
        (void) close(dcf);
        Uerror = SS_DIAL_FAILED;
        trace1(TR_open801, 1);
        return (FAIL);
    } else
        DEBUG(4, "ACU write ok\n%s", "");

    (void) close(dnf);
    (void) close(nullfd = open("/", O_RDONLY)); /* partial open hack */
    ret = open(dcname, O_RDWR);  /* wait for carrier  */
    (void) alarm(0);
    (void) close(ret);  /* close 2nd modem open() */
    if (ret < 0) {      /* open() interrupted by alarm */
        DEBUG(4, "Line open %s\n", "failed");
        Uerror = SS_DIAL_FAILED;
        (void) close(nullfd);       /* close partially opened modem */
        trace1(TR_open801, 1);
        return (FAIL);
    }
    (void) _fcntl(dcf,F_SETFL, _fcntl(dcf, F_GETFL, 0) & ~O_NDELAY);
    trace1(TR_open801, 1);
    return (dcf);
}
#endif /* ATTSV */

#endif /* DIAL801 */

#ifdef V8
GLOBAL int
Dialout(flds)
char *flds[];
{
    int fd;
    char phone[MAXPH+2];


    trace1(TR_Dialout, 0);
    exphone(flds[F_PHONE], phone);

    DEBUG(4, "call dialout(%s", phone);
    DEBUG(4, ", %s)\n", dev[D_CLASS]);
    fd = dialout(phone, dev[D_CLASS]);
    if (fd == -1)
    Uerror = SS_NO_DEVICE;
    if (fd == -3)
    Uerror = SS_DIAL_FAILED;
    if (fd == -9)
    Uerror = SS_DEVICE_FAILED;

    (void) strcpy(Dc, "Dialout");

    trace1(TR_Dialout, 1);
    return (fd);
}
#endif /* V8 */

#ifdef TLI
/*
 *
 * AT&T Transport Layer Interface
 *
 * expected in Devices
 *  TLI line1 - - TLI
 * or
 *  TLIS line1 - - TLIS
 *
 */

#include <tiuser.h>

#if defined(__STDC__)
EXTERN void tfaillog(int fd, const char *s);
#else
EXTERN void tfaillog();
#endif

char *t_alloc();
int t_bind(), t_close(), t_connect(), t_free(), t_look(), t_open(), t_rcvdis();

#define CONNECT_ATTEMPTS    3
#define TFREE(p, type)  if ((p)) t_free((char *)(p), (type))

/*
 * returns fd to remote uucp daemon
 */
/*ARGSUSED*/
GLOBAL int
tlicall(flds, dev)
char *flds[];
char *dev[];
{
    char        addrbuf[ BUFSIZ ];
    char        devname[MAXNAMESIZE];
    int     fd;
    register int    i, j;
    struct t_bind   *bind_ret = 0;
    struct t_info   tinfo;
    struct t_call   *sndcall = 0, *rcvcall = 0;

    EXTERN struct netbuf    *stoa();

        trace1(TR_tlicall, 0);
    if (dev[D_LINE][0] != '/') {
        /*  dev holds device name relative to /dev  */
        sprintf(devname, "/dev/%s", dev[D_LINE]);
    } else {
        /*  dev holds full path name of device  */
        strcpy(devname, dev[D_LINE]);
    }
    /* gimme local transport endpoint */
    errno = t_errno = 0;
    if (setjmp(Sjbuf)) {
        DEBUG(1, "t_open timeout\n%s", "");
        logent("t_open", "TIMEOUT");
        Uerror = SS_NO_DEVICE;
            trace1(TR_tlicall, 1);
        return (FAIL);
    }
    (void) signal(SIGALRM, alarmtr);
    (void) alarm(5);
    fd = t_open(devname, O_RDWR, &tinfo);
    (void) alarm(0);
    if (fd < 0) {
        tfaillog(fd, "t_open");
        Uerror = SS_NO_DEVICE;
            trace1(TR_tlicall, 1);
        return (FAIL);
    }
    if (fd_mklock(fd) != SUCCESS) {
        (void)t_close(fd);
        DEBUG(1, "tlicall: failed to lock device %s\n", devname);
        Uerror = SS_LOCKED_DEVICE;
            trace1(TR_tlicall, 1);
        return (FAIL);
    }

    /* allocate tli structures  */
    errno = t_errno = 0;
    if ((bind_ret = (struct t_bind *)t_alloc(fd, T_BIND, T_ALL)) ==
        (struct t_bind *)NULL
    || (sndcall = (struct t_call *)t_alloc(fd, T_CALL, T_ALL)) ==
        (struct t_call *)NULL
    || (rcvcall = (struct t_call *)t_alloc(fd, T_CALL, T_ALL)) ==
        (struct t_call *)NULL) {
        tfaillog(fd, "t_alloc");
        TFREE(bind_ret, T_BIND);TFREE(sndcall, T_CALL);
        TFREE(rcvcall, T_CALL);
        Uerror = SS_NO_DEVICE;
            trace1(TR_tlicall, 1);
        return (FAIL);
    }

    /* bind */
    errno = t_errno = 0;
    if (t_bind(fd, (struct t_bind *) 0, bind_ret) < 0) {
        tfaillog(fd, "t_bind");
        TFREE(bind_ret, T_BIND);TFREE(sndcall, T_CALL);
        TFREE(rcvcall, T_CALL);
        Uerror = SS_NO_DEVICE;
        fd_rmlock(fd);
        (void) t_close(fd);
            trace1(TR_tlicall, 1);
        return (FAIL);
    }
    DEBUG(5, "tlicall: bound to %s\n", bind_ret->addr.buf);

    /*
     * Prepare to connect.
     *
     * If address begins with "\x", "\X", "\o", or "\O",
     * assume is hexadecimal or octal address and use stoa()
     * to convert it.
     *
     * Else is usual uucico address -- only \N's left to process.
     * Walk thru connection address, changing \N's to NULLCHARs.
     * Note:  If a NULLCHAR must be part of the connection address,
     * it must be overtly included in the address.  One recommended
     * way is to do it in the Devices file, thusly:
     *      Netname /dev/netport - - TLI \D\000
     * bsfix() turns \000 into \N and then the loop below makes it a
     * real, included-in-the-length null-byte.
     *
     * The DEBUG must print the strecpy'd address (so that
     * non-printables will have been replaced with C escapes).
     */

    DEBUG(5, "t_connect to addr \"%s\"\n",
        strecpy(addrbuf, dev[D_ARG], "\\"));

    if (dev[D_ARG][0] == '\\' &&
    (dev[D_ARG][1] == 'x' || dev[D_ARG][1] == 'X'
    || dev[D_ARG][1] == 'o' || dev[D_ARG][1] == 'O')) {
        if (stoa(dev[D_ARG], &(sndcall->addr)) == (struct netbuf *)NULL) {
            DEBUG(5, "tlicall: stoa failed\n%s", "");
            logent("tlicall", "string-to-address failed");
            TFREE(bind_ret, T_BIND);TFREE(sndcall, T_CALL);
            TFREE(rcvcall, T_CALL);
            Uerror = SS_NO_DEVICE;
            fd_rmlock(fd);
            (void) t_close(fd);
                trace1(TR_tlicall, 1);
            return (FAIL);
        }
    } else {
        for (i = j = 0; i < BUFSIZ && dev[D_ARG][i] != NULLCHAR;
        ++i, ++j) {
            if (dev[D_ARG][i] == '\\'  &&  dev[D_ARG][i+1] == 'N') {
                addrbuf[j] = NULLCHAR;
                ++i;
            }
            else {
                addrbuf[j] = dev[D_ARG][i];
            }
        }
        sndcall->addr.buf = addrbuf;
        sndcall->addr.len = j;
    }

    if (setjmp(Sjbuf)) {
        DEBUG(4, "timeout tlicall\n%s", "");
        logent("tlicall", "TIMEOUT");
        TFREE(bind_ret, T_BIND);TFREE(sndcall, T_CALL);
        TFREE(rcvcall, T_CALL);
        Uerror = SS_NO_DEVICE;
        fd_rmlock(fd);
        (void) t_close(fd);
            trace1(TR_tlicall, 1);
        return (FAIL);
    }
    (void) signal(SIGALRM, alarmtr);
    (void) alarm(connecttime);

    /* connect to the service -- some listeners can't handle */
    /* multiple connect requests, so try it a few times */
    errno = t_errno = 0;
    for (i = 0; i < CONNECT_ATTEMPTS; ++i) {
        if (t_connect(fd, sndcall, rcvcall) == 0)
            break;
        if ((t_errno == TLOOK) && (t_look(fd) == T_DISCONNECT)) {
            t_rcvdis(fd,NULL);
            (void) alarm(0);
        } else {
            (void) alarm(0);
            tfaillog(fd, "t_connect");
            TFREE(bind_ret, T_BIND);TFREE(sndcall, T_CALL);
            TFREE(rcvcall, T_CALL);
            Uerror = SS_DIAL_FAILED;
            fd_rmlock(fd);
            (void) t_close(fd);
                trace1(TR_tlicall, 1);
            return (FAIL);
        }
    }
    (void) alarm(0);
    TFREE(bind_ret, T_BIND);TFREE(sndcall, T_CALL);
    TFREE(rcvcall, T_CALL);
    if (i == CONNECT_ATTEMPTS) {
        tfaillog(fd, "t_connect");
        Uerror = SS_DIAL_FAILED;
        fd_rmlock(fd);
        (void) t_close(fd);
            trace1(TR_tlicall, 1);
        return (FAIL);
    }
    errno = t_errno = 0;
    (void) strcpy(Dc, dev[D_CALLER]);
        trace1(TR_tlicall, 1);
    return (fd);
}
#endif /* TLI */