usr.bin/tip/acu.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. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29  * @(#)acu.c    8.1 (Berkeley) 6/6/93
  30  * $FreeBSD: src/usr.bin/tip/tip/acu.c,v 1.5 1999/08/28 01:06:31 peter Exp $
  31  */
  32
  33 #include "tip.h"
  34
  35 acu_t* unidialer_getmodem (const char *modem_name);
  36
  37 static acu_t *acu = NULL;
  38 static int conflag;
  39 static void acuabort(int);
  40 static acu_t *acutype(char *);
  41 static jmp_buf jmpbuf;
  42 /*
  43  * Establish connection for tip
  44  *
  45  * If DU is true, we should dial an ACU whose type is AT.
  46  * The phone numbers are in PN, and the call unit is in CU.
  47  *
  48  * If the PN is an '@', then we consult the PHONES file for
  49  *   the phone numbers.  This file is /etc/phones, unless overriden
  50  *   by an exported shell variable.
  51  *
  52  * The data base files must be in the format:
  53  *      host-name[ \t]*phone-number
  54  *   with the possibility of multiple phone numbers
  55  *   for a single host acting as a rotary (in the order
  56  *   found in the file).
  57  */
  58 char *
  59 connect(void)
  60 {
  61         char *cp = PN;
  62         char *phnum, string[256];
  63         FILE *fd;
  64         int tried = 0;
  65
  66         if (!DU) {              /* regular connect message */
  67                 if (CM != NULL)
  68                         xpwrite(FD, CM, size(CM));
  69                 logent(value(HOST), "", DV, "call completed");
  70                 return (NULL);
  71         }
  72         /*
  73          * @ =>'s use data base in PHONES environment variable
  74          *        otherwise, use /etc/phones
  75          */
  76         signal(SIGINT, acuabort);
  77         signal(SIGQUIT, acuabort);
  78         if (setjmp(jmpbuf)) {
  79                 signal(SIGINT, SIG_IGN);
  80                 signal(SIGQUIT, SIG_IGN);
  81                 printf("\ncall aborted\n");
  82                 logent(value(HOST), "", "", "call aborted");
  83                 if (acu != NULL) {
  84                         boolean(value(VERBOSE)) = FALSE;
  85                         if (conflag)
  86                                 disconnect(NULL);
  87                         else
  88                                 (*acu->acu_abort)();
  89                 }
  90                 return ("interrupt");
  91         }
  92         if ((acu = acutype(AT)) == NULL)
  93                 return ("unknown ACU type");
  94         if (*cp != '@') {
  95                 while (*cp) {
  96                         for (phnum = cp; *cp && *cp != ','; cp++)
  97                                 ;
  98                         if (*cp)
  99                                 *cp++ = '\0';
 100
 101                         if ((conflag = (*acu->acu_dialer)(phnum, CU))) {
 102                                 if (CM != NULL)
 103                                         xpwrite(FD, CM, size(CM));
 104                                 logent(value(HOST), phnum, acu->acu_name,
 105                                         "call completed");
 106                                 return (NULL);
 107                         } else
 108                                 logent(value(HOST), phnum, acu->acu_name,
 109                                         "call failed");
 110                         tried++;
 111                 }
 112         } else {
 113                 if ((fd = fopen(PH, "r")) == NULL) {
 114                         printf("%s: ", PH);
 115                         return ("can't open phone number file");
 116                 }
 117                 while (fgets(string, sizeof(string), fd) != NULL) {
 118                         for (cp = string; !any(*cp, " \t\n"); cp++)
 119                                 ;
 120                         if (*cp == '\n') {
 121                                 fclose(fd);
 122                                 return ("unrecognizable host name");
 123                         }
 124                         *cp++ = '\0';
 125                         if (strcmp(string, value(HOST)))
 126                                 continue;
 127                         while (any(*cp, " \t"))
 128                                 cp++;
 129                         if (*cp == '\n') {
 130                                 fclose(fd);
 131                                 return ("missing phone number");
 132                         }
 133                         for (phnum = cp; *cp && *cp != ',' && *cp != '\n'; cp++)
 134                                 ;
 135                         if (*cp)
 136                                 *cp++ = '\0';
 137
 138                         if ((conflag = (*acu->acu_dialer)(phnum, CU))) {
 139                                 fclose(fd);
 140                                 if (CM != NULL)
 141                                         xpwrite(FD, CM, size(CM));
 142                                 logent(value(HOST), phnum, acu->acu_name,
 143                                         "call completed");
 144                                 return (NULL);
 145                         } else
 146                                 logent(value(HOST), phnum, acu->acu_name,
 147                                         "call failed");
 148                         tried++;
 149                 }
 150                 fclose(fd);
 151         }
 152         if (!tried)
 153                 logent(value(HOST), "", acu->acu_name, "missing phone number");
 154         else
 155                 (*acu->acu_abort)();
 156         return (tried ? "call failed" : "missing phone number");
 157 }
 158
 159 void
 160 disconnect(char *reason)
 161 {
 162         if (!conflag) {
 163                 logent(value(HOST), "", DV, "call terminated");
 164                 return;
 165         }
 166         if (reason == NULL) {
 167                 logent(value(HOST), "", acu->acu_name, "call terminated");
 168                 if (boolean(value(VERBOSE)))
 169                         printf("\r\ndisconnecting...");
 170         } else
 171                 logent(value(HOST), "", acu->acu_name, reason);
 172         (*acu->acu_disconnect)();
 173 }
 174
 175 static void
 176 acuabort(int s)
 177 {
 178         signal(s, SIG_IGN);
 179         longjmp(jmpbuf, 1);
 180 }
 181
 182 static acu_t *
 183 acutype(char *s)
 184 {
 185         return unidialer_getmodem (s);
 186 }