usr.bin/tip/libacu/df.c

   1 /*
   2  * Copyright (c) 1983, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  *
  33  * @(#)df.c     8.1 (Berkeley) 6/6/93
  34  */
  35
  36 /*
  37  * Dial the DF02-AC or DF03-AC
  38  */
  39
  40 #include "tipconf.h"
  41 #include "tip.h"
  42
  43 static jmp_buf Sjbuf;
  44 static void timeout();
  45
  46 df02_dialer(num, acu)
  47         char *num, *acu;
  48 {
  49
  50         return (df_dialer(num, acu, 0));
  51 }
  52
  53 df03_dialer(num, acu)
  54         char *num, *acu;
  55 {
  56
  57         return (df_dialer(num, acu, 1));
  58 }
  59
  60 df_dialer(num, acu, df03)
  61         char *num, *acu;
  62         int df03;
  63 {
  64         register int f = FD;
  65         int speed = 0, rw = 2;
  66         char c = '\0';
  67
  68         acu_hupcl ();
  69
  70         if (setjmp(Sjbuf)) {
  71                 printf("connection timed out\r\n");
  72                 df_disconnect();
  73                 return (0);
  74         }
  75         if (boolean(value(VERBOSE)))
  76                 printf("\ndialing...");
  77         fflush(stdout);
  78 #ifdef TIOCMSET
  79         if (df03) {
  80                 int st = TIOCM_ST;      /* secondary Transmit flag */
  81
  82                 if ((speed = acu_getspeed ()) != B1200) {       /* must dial at 1200 baud */
  83                         acu_setspeed (B1200);
  84                         ioctl(f, TIOCMBIC, &st); /* clear ST for 300 baud */
  85                 } else
  86                         ioctl(f, TIOCMBIS, &st); /* set ST for 1200 baud */
  87         }
  88 #endif
  89         signal(SIGALRM, timeout);
  90         alarm(5 * strlen(num) + 10);
  91         ioctl(f, TIOCFLUSH, &rw);
  92         write(f, "\001", 1);
  93         sleep(1);
  94         write(f, "\002", 1);
  95         write(f, num, strlen(num));
  96         read(f, &c, 1);
  97 #ifdef TIOCMSET
  98         if (df03 && speed) {
  99                 acu_setspeed (speed);
 100         }
 101 #endif
 102         return (c == 'A');
 103 }
 104
 105 df_disconnect()
 106 {
 107         int rw = 2;
 108
 109         write(FD, "\001", 1);
 110         sleep(1);
 111         ioctl(FD, TIOCFLUSH, &rw);
 112 }
 113
 114
 115 df_abort()
 116 {
 117
 118         df_disconnect();
 119 }
 120
 121
 122 static void
 123 timeout()
 124 {
 125
 126         longjmp(Sjbuf, 1);
 127 }