BSD 4_4 release

[unix-history] / usr / src / usr.bin / tip / aculib / biz22.c

/*
* Copyright (c) 1983, 1993
*      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[] = "@(#)biz22.c     8.1 (Berkeley) 6/6/93";
#endif /* not lint */

#include "tip.h"

#define DISCONNECT_CMD  "\20\04"        /* disconnection string */

static  void sigALRM();
static  int timeout = 0;
static  jmp_buf timeoutbuf;

/*
* Dial up on a BIZCOMP Model 1022 with either
*      tone dialing (mod = "V")
*      pulse dialing (mod = "W")
*/
static int
biz_dialer(num, mod)
       char *num, *mod;
{
       register int connected = 0;
       char cbuf[40];
       static int cmd(), detect();

       if (boolean(value(VERBOSE)))
               printf("\nstarting call...");
       /*
        * Disable auto-answer and configure for tone/pulse
        *  dialing
        */
       if (cmd("\02K\r")) {
               printf("can't initialize bizcomp...");
               return (0);
       }
       strcpy(cbuf, "\02.\r");
       cbuf[1] = *mod;
       if (cmd(cbuf)) {
               printf("can't set dialing mode...");
               return (0);
       }
       strcpy(cbuf, "\02D");
       strcat(cbuf, num);
       strcat(cbuf, "\r");
       write(FD, cbuf, strlen(cbuf));
       if (!detect("7\r")) {
               printf("can't get dial tone...");
               return (0);
       }
       if (boolean(value(VERBOSE)))
               printf("ringing...");
       /*
        * The reply from the BIZCOMP should be:
        *      2 \r or 7 \r    failure
        *      1 \r            success
        */
       connected = detect("1\r");
#ifdef ACULOG
       if (timeout) {
               char line[80];

               sprintf(line, "%d second dial timeout",
                       number(value(DIALTIMEOUT)));
               logent(value(HOST), num, "biz1022", line);
       }
#endif
       if (timeout)
               biz22_disconnect();     /* insurance */
       return (connected);
}

biz22w_dialer(num, acu)
       char *num, *acu;
{

       return (biz_dialer(num, "W"));
}

biz22f_dialer(num, acu)
       char *num, *acu;
{

       return (biz_dialer(num, "V"));
}

biz22_disconnect()
{
       int rw = 2;

       write(FD, DISCONNECT_CMD, 4);
       sleep(2);
       ioctl(FD, TIOCFLUSH, &rw);
}

biz22_abort()
{

       write(FD, "\02", 1);
}

static void
sigALRM()
{

       timeout = 1;
       longjmp(timeoutbuf, 1);
}

static int
cmd(s)
       register char *s;
{
       sig_t f;
       char c;

       write(FD, s, strlen(s));
       f = signal(SIGALRM, sigALRM);
       if (setjmp(timeoutbuf)) {
               biz22_abort();
               signal(SIGALRM, f);
               return (1);
       }
       alarm(number(value(DIALTIMEOUT)));
       read(FD, &c, 1);
       alarm(0);
       signal(SIGALRM, f);
       c &= 0177;
       return (c != '\r');
}

static int
detect(s)
       register char *s;
{
       sig_t f;
       char c;

       f = signal(SIGALRM, sigALRM);
       timeout = 0;
       while (*s) {
               if (setjmp(timeoutbuf)) {
                       biz22_abort();
                       break;
               }
               alarm(number(value(DIALTIMEOUT)));
               read(FD, &c, 1);
               alarm(0);
               c &= 0177;
               if (c != *s++)
                       return (0);
       }
       signal(SIGALRM, f);
       return (timeout == 0);
}