usr.bin/tip/libacu/biz22.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  * @(#)biz22.c  8.1 (Berkeley) 6/6/93
  34  * $DragonFly: src/usr.bin/tip/libacu/biz22.c,v 1.3 2005/05/07 23:20:43 corecode Exp $
  35  */
  36
  37 #include "tipconf.h"
  38 #include "tip.h"
  39
  40 #define DISCONNECT_CMD  "\20\04"        /* disconnection string */
  41
  42 static  void sigALRM();
  43 static  int cmd(char *s);
  44 static  int detect(char *s);
  45 static  int timeout = 0;
  46 static  jmp_buf timeoutbuf;
  47
  48 /*
  49  * Dial up on a BIZCOMP Model 1022 with either
  50  *      tone dialing (mod = "V")
  51  *      pulse dialing (mod = "W")
  52  */
  53 static int
  54 biz_dialer(num, mod)
  55         char *num, *mod;
  56 {
  57         register int connected = 0;
  58         char cbuf[40];
  59
  60         if (boolean(value(VERBOSE)))
  61                 printf("\nstarting call...");
  62         /*
  63          * Disable auto-answer and configure for tone/pulse
  64          *  dialing
  65          */
  66         if (cmd("\02K\r")) {
  67                 printf("can't initialize bizcomp...");
  68                 return (0);
  69         }
  70         strcpy(cbuf, "\02.\r");
  71         cbuf[1] = *mod;
  72         if (cmd(cbuf)) {
  73                 printf("can't set dialing mode...");
  74                 return (0);
  75         }
  76         strcpy(cbuf, "\02D");
  77         strcat(cbuf, num);
  78         strcat(cbuf, "\r");
  79         write(FD, cbuf, strlen(cbuf));
  80         if (!detect("7\r")) {
  81                 printf("can't get dial tone...");
  82                 return (0);
  83         }
  84         if (boolean(value(VERBOSE)))
  85                 printf("ringing...");
  86         /*
  87          * The reply from the BIZCOMP should be:
  88          *      2 \r or 7 \r    failure
  89          *      1 \r            success
  90          */
  91         connected = detect("1\r");
  92 #if ACULOG
  93         if (timeout) {
  94                 char line[80];
  95
  96                 sprintf(line, "%d second dial timeout",
  97                         number(value(DIALTIMEOUT)));
  98                 logent(value(HOST), num, "biz1022", line);
  99         }
 100 #endif
 101         if (timeout)
 102                 biz22_disconnect();     /* insurance */
 103         return (connected);
 104 }
 105
 106 biz22w_dialer(num, acu)
 107         char *num, *acu;
 108 {
 109
 110         return (biz_dialer(num, "W"));
 111 }
 112
 113 biz22f_dialer(num, acu)
 114         char *num, *acu;
 115 {
 116
 117         return (biz_dialer(num, "V"));
 118 }
 119
 120 biz22_disconnect()
 121 {
 122         int rw = 2;
 123
 124         write(FD, DISCONNECT_CMD, 4);
 125         sleep(2);
 126         ioctl(FD, TIOCFLUSH, &rw);
 127 }
 128
 129 biz22_abort()
 130 {
 131
 132         write(FD, "\02", 1);
 133 }
 134
 135 static void
 136 sigALRM()
 137 {
 138
 139         timeout = 1;
 140         longjmp(timeoutbuf, 1);
 141 }
 142
 143 static int
 144 cmd(s)
 145         register char *s;
 146 {
 147         sig_t f;
 148         char c;
 149
 150         write(FD, s, strlen(s));
 151         f = signal(SIGALRM, sigALRM);
 152         if (setjmp(timeoutbuf)) {
 153                 biz22_abort();
 154                 signal(SIGALRM, f);
 155                 return (1);
 156         }
 157         alarm(number(value(DIALTIMEOUT)));
 158         read(FD, &c, 1);
 159         alarm(0);
 160         signal(SIGALRM, f);
 161         c &= 0177;
 162         return (c != '\r');
 163 }
 164
 165 static int
 166 detect(s)
 167         register char *s;
 168 {
 169         sig_t f;
 170         char c;
 171
 172         f = signal(SIGALRM, sigALRM);
 173         timeout = 0;
 174         while (*s) {
 175                 if (setjmp(timeoutbuf)) {
 176                         biz22_abort();
 177                         break;
 178                 }
 179                 alarm(number(value(DIALTIMEOUT)));
 180                 read(FD, &c, 1);
 181                 alarm(0);
 182                 c &= 0177;
 183                 if (c != *s++)
 184                         return (0);
 185         }
 186         signal(SIGALRM, f);
 187         return (timeout == 0);
 188 }