| 1 | /* |
| 2 | * Copyright (c) 1983 The Regents of the University of California. |
| 3 | * 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 | |
| 34 | #ifndef lint |
| 35 | static char sccsid[] = "@(#)acu.c 5.8 (Berkeley) 3/2/91"; |
| 36 | #endif /* not lint */ |
| 37 | |
| 38 | #include "tip.h" |
| 39 | |
| 40 | static acu_t *acu = NOACU; |
| 41 | static int conflag; |
| 42 | static void acuabort(); |
| 43 | static acu_t *acutype(); |
| 44 | static jmp_buf jmpbuf; |
| 45 | /* |
| 46 | * Establish connection for tip |
| 47 | * |
| 48 | * If DU is true, we should dial an ACU whose type is AT. |
| 49 | * The phone numbers are in PN, and the call unit is in CU. |
| 50 | * |
| 51 | * If the PN is an '@', then we consult the PHONES file for |
| 52 | * the phone numbers. This file is /etc/phones, unless overriden |
| 53 | * by an exported shell variable. |
| 54 | * |
| 55 | * The data base files must be in the format: |
| 56 | * host-name[ \t]*phone-number |
| 57 | * with the possibility of multiple phone numbers |
| 58 | * for a single host acting as a rotary (in the order |
| 59 | * found in the file). |
| 60 | */ |
| 61 | char * |
| 62 | connect() |
| 63 | { |
| 64 | register char *cp = PN; |
| 65 | char *phnum, string[256]; |
| 66 | FILE *fd; |
| 67 | int tried = 0; |
| 68 | |
| 69 | if (!DU) { /* regular connect message */ |
| 70 | if (CM != NOSTR) |
| 71 | pwrite(FD, CM, size(CM)); |
| 72 | logent(value(HOST), "", DV, "call completed"); |
| 73 | return (NOSTR); |
| 74 | } |
| 75 | /* |
| 76 | * @ =>'s use data base in PHONES environment variable |
| 77 | * otherwise, use /etc/phones |
| 78 | */ |
| 79 | signal(SIGINT, acuabort); |
| 80 | signal(SIGQUIT, acuabort); |
| 81 | if (setjmp(jmpbuf)) { |
| 82 | signal(SIGINT, SIG_IGN); |
| 83 | signal(SIGQUIT, SIG_IGN); |
| 84 | printf("\ncall aborted\n"); |
| 85 | logent(value(HOST), "", "", "call aborted"); |
| 86 | if (acu != NOACU) { |
| 87 | boolean(value(VERBOSE)) = FALSE; |
| 88 | if (conflag) |
| 89 | disconnect(NOSTR); |
| 90 | else |
| 91 | (*acu->acu_abort)(); |
| 92 | } |
| 93 | return ("interrupt"); |
| 94 | } |
| 95 | if ((acu = acutype(AT)) == NOACU) |
| 96 | return ("unknown ACU type"); |
| 97 | if (*cp != '@') { |
| 98 | while (*cp) { |
| 99 | for (phnum = cp; *cp && *cp != ','; cp++) |
| 100 | ; |
| 101 | if (*cp) |
| 102 | *cp++ = '\0'; |
| 103 | |
| 104 | if (conflag = (*acu->acu_dialer)(phnum, CU)) { |
| 105 | logent(value(HOST), phnum, acu->acu_name, |
| 106 | "call completed"); |
| 107 | return (NOSTR); |
| 108 | } else |
| 109 | logent(value(HOST), phnum, acu->acu_name, |
| 110 | "call failed"); |
| 111 | tried++; |
| 112 | } |
| 113 | } else { |
| 114 | if ((fd = fopen(PH, "r")) == NOFILE) { |
| 115 | printf("%s: ", PH); |
| 116 | return ("can't open phone number file"); |
| 117 | } |
| 118 | while (fgets(string, sizeof(string), fd) != NOSTR) { |
| 119 | for (cp = string; !any(*cp, " \t\n"); cp++) |
| 120 | ; |
| 121 | if (*cp == '\n') { |
| 122 | fclose(fd); |
| 123 | return ("unrecognizable host name"); |
| 124 | } |
| 125 | *cp++ = '\0'; |
| 126 | if (strcmp(string, value(HOST))) |
| 127 | continue; |
| 128 | while (any(*cp, " \t")) |
| 129 | cp++; |
| 130 | if (*cp == '\n') { |
| 131 | fclose(fd); |
| 132 | return ("missing phone number"); |
| 133 | } |
| 134 | for (phnum = cp; *cp && *cp != ',' && *cp != '\n'; cp++) |
| 135 | ; |
| 136 | if (*cp) |
| 137 | *cp++ = '\0'; |
| 138 | |
| 139 | if (conflag = (*acu->acu_dialer)(phnum, CU)) { |
| 140 | fclose(fd); |
| 141 | logent(value(HOST), phnum, acu->acu_name, |
| 142 | "call completed"); |
| 143 | return (NOSTR); |
| 144 | } else |
| 145 | logent(value(HOST), phnum, acu->acu_name, |
| 146 | "call failed"); |
| 147 | tried++; |
| 148 | } |
| 149 | fclose(fd); |
| 150 | } |
| 151 | if (!tried) |
| 152 | logent(value(HOST), "", acu->acu_name, "missing phone number"); |
| 153 | else |
| 154 | (*acu->acu_abort)(); |
| 155 | return (tried ? "call failed" : "missing phone number"); |
| 156 | } |
| 157 | |
| 158 | disconnect(reason) |
| 159 | char *reason; |
| 160 | { |
| 161 | if (!conflag) { |
| 162 | logent(value(HOST), "", DV, "call terminated"); |
| 163 | return; |
| 164 | } |
| 165 | if (reason == NOSTR) { |
| 166 | logent(value(HOST), "", acu->acu_name, "call terminated"); |
| 167 | if (boolean(value(VERBOSE))) |
| 168 | printf("\r\ndisconnecting..."); |
| 169 | } else |
| 170 | logent(value(HOST), "", acu->acu_name, reason); |
| 171 | (*acu->acu_disconnect)(); |
| 172 | } |
| 173 | |
| 174 | static void |
| 175 | acuabort(s) |
| 176 | { |
| 177 | signal(s, SIG_IGN); |
| 178 | longjmp(jmpbuf, 1); |
| 179 | } |
| 180 | |
| 181 | static acu_t * |
| 182 | acutype(s) |
| 183 | register char *s; |
| 184 | { |
| 185 | register acu_t *p; |
| 186 | extern acu_t acutable[]; |
| 187 | |
| 188 | for (p = acutable; p->acu_name != '\0'; p++) |
| 189 | if (!strcmp(s, p->acu_name)) |
| 190 | return (p); |
| 191 | return (NOACU); |
| 192 | } |