BSD 4_3_Net_2 release

[unix-history] / usr / src / usr.bin / tip / aculib / v3451.c

/*
* Copyright (c) 1983 The Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
*    must display the following acknowledgement:
*      This product includes software developed by the University of
*      California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
*    may be used to endorse or promote products derived from this software
*    without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/

#ifndef lint
static char sccsid[] = "@(#)v3451.c     5.5 (Berkeley) 3/2/91";
#endif /* not lint */

/*
* Routines for calling up on a Vadic 3451 Modem
*/
#include "tip.h"

static  jmp_buf Sjbuf;

v3451_dialer(num, acu)
       register char *num;
       char *acu;
{
       sig_t func;
       int ok;
       int slow = number(value(BAUDRATE)) < 1200, rw = 2;
       char phone[50];
#ifdef ACULOG
       char line[80];
#endif
       static int expect();
       static void vawrite();

       /*
        * Get in synch
        */
       vawrite("I\r", 1 + slow);
       vawrite("I\r", 1 + slow);
       vawrite("I\r", 1 + slow);
       vawrite("\005\r", 2 + slow);
       if (!expect("READY")) {
               printf("can't synchronize with vadic 3451\n");
#ifdef ACULOG
               logent(value(HOST), num, "vadic", "can't synch up");
#endif
               return (0);
       }
       ioctl(FD, TIOCHPCL, 0);
       sleep(1);
       vawrite("D\r", 2 + slow);
       if (!expect("NUMBER?")) {
               printf("Vadic will not accept dial command\n");
#ifdef ACULOG
               logent(value(HOST), num, "vadic", "will not accept dial");
#endif
               return (0);
       }
       strcpy(phone, num);
       strcat(phone, "\r");
       vawrite(phone, 1 + slow);
       if (!expect(phone)) {
               printf("Vadic will not accept phone number\n");
#ifdef ACULOG
               logent(value(HOST), num, "vadic", "will not accept number");
#endif
               return (0);
       }
       func = signal(SIGINT,SIG_IGN);
       /*
        * You cannot interrupt the Vadic when its dialing;
        * even dropping DTR does not work (definitely a
        * brain damaged design).
        */
       vawrite("\r", 1 + slow);
       vawrite("\r", 1 + slow);
       if (!expect("DIALING:")) {
               printf("Vadic failed to dial\n");
#ifdef ACULOG
               logent(value(HOST), num, "vadic", "failed to dial");
#endif
               return (0);
       }
       if (boolean(value(VERBOSE)))
               printf("\ndialing...");
       ok = expect("ON LINE");
       signal(SIGINT, func);
       if (!ok) {
               printf("call failed\n");
#ifdef ACULOG
               logent(value(HOST), num, "vadic", "call failed");
#endif
               return (0);
       }
       ioctl(FD, TIOCFLUSH, &rw);
       return (1);
}

v3451_disconnect()
{

       close(FD);
}

v3451_abort()
{

       close(FD);
}

static void
vawrite(cp, delay)
       register char *cp;
       int delay;
{

       for (; *cp; sleep(delay), cp++)
               write(FD, cp, 1);
}

static
expect(cp)
       register char *cp;
{
       char buf[300];
       register char *rp = buf;
       int timeout = 30, online = 0;
       static int notin();
       static void alarmtr();

       if (strcmp(cp, "\"\"") == 0)
               return (1);
       *rp = 0;
       /*
        * If we are waiting for the Vadic to complete
        * dialing and get a connection, allow more time
        * Unfortunately, the Vadic times out 24 seconds after
        * the last digit is dialed
        */
       online = strcmp(cp, "ON LINE") == 0;
       if (online)
               timeout = number(value(DIALTIMEOUT));
       signal(SIGALRM, alarmtr);
       if (setjmp(Sjbuf))
               return (0);
       alarm(timeout);
       while (notin(cp, buf) && rp < buf + sizeof (buf) - 1) {
               if (online && notin("FAILED CALL", buf) == 0)
                       return (0);
               if (read(FD, rp, 1) < 0) {
                       alarm(0);
                       return (0);
               }
               if (*rp &= 0177)
                       rp++;
               *rp = '\0';
       }
       alarm(0);
       return (1);
}

static void
alarmtr()
{
       longjmp(Sjbuf, 1);
}

static int
notin(sh, lg)
       char *sh, *lg;
{
       static int prefix();

       for (; *lg; lg++)
               if (prefix(sh, lg))
                       return (0);
       return (1);
}

static
prefix(s1, s2)
       register char *s1, *s2;
{
       register char c;

       while ((c = *s1++) == *s2++)
               if (c == '\0')
                       return (1);
       return (c == '\0');
}