Annotation of src/usr.bin/tip/acu.c, Revision 1.13
1.13 ! deraadt 1: /* $OpenBSD: acu.c,v 1.12 2006/03/17 14:43:06 moritz Exp $ */
1.3 millert 2: /* $NetBSD: acu.c,v 1.4 1996/12/29 10:34:03 cgd Exp $ */
1.1 deraadt 3:
4: /*
5: * Copyright (c) 1983, 1993
6: * The Regents of the University of California. All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
1.9 millert 16: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 17: * may be used to endorse or promote products derived from this software
18: * without specific prior written permission.
19: *
20: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30: * SUCH DAMAGE.
31: */
32:
33: #ifndef lint
34: #if 0
35: static char sccsid[] = "@(#)acu.c 8.1 (Berkeley) 6/6/93";
36: #endif
1.13 ! deraadt 37: static const char rcsid[] = "$OpenBSD: acu.c,v 1.12 2006/03/17 14:43:06 moritz Exp $";
1.1 deraadt 38: #endif /* not lint */
39:
40: #include "tip.h"
41:
42: static acu_t *acu = NOACU;
43: static int conflag;
1.12 moritz 44: static void acuabort(int);
45: static acu_t *acutype(char *);
1.1 deraadt 46: static jmp_buf jmpbuf;
47: /*
48: * Establish connection for tip
49: *
50: * If DU is true, we should dial an ACU whose type is AT.
51: * The phone numbers are in PN, and the call unit is in CU.
52: *
53: * If the PN is an '@', then we consult the PHONES file for
54: * the phone numbers. This file is /etc/phones, unless overriden
55: * by an exported shell variable.
56: *
57: * The data base files must be in the format:
58: * host-name[ \t]*phone-number
59: * with the possibility of multiple phone numbers
60: * for a single host acting as a rotary (in the order
61: * found in the file).
62: */
63: char *
1.11 deraadt 64: con(void)
1.1 deraadt 65: {
1.7 millert 66: char *cp = PN;
1.1 deraadt 67: char *phnum, string[256];
1.13 ! deraadt 68: FILE *fp;
1.4 deraadt 69: volatile int tried = 0;
1.1 deraadt 70:
71: if (!DU) { /* regular connect message */
72: if (CM != NOSTR)
1.5 deraadt 73: parwrite(FD, CM, size(CM));
1.1 deraadt 74: logent(value(HOST), "", DV, "call completed");
75: return (NOSTR);
76: }
77: /*
78: * @ =>'s use data base in PHONES environment variable
79: * otherwise, use /etc/phones
80: */
81: signal(SIGINT, acuabort);
82: signal(SIGQUIT, acuabort);
83: if (setjmp(jmpbuf)) {
84: signal(SIGINT, SIG_IGN);
85: signal(SIGQUIT, SIG_IGN);
86: printf("\ncall aborted\n");
87: logent(value(HOST), "", "", "call aborted");
88: if (acu != NOACU) {
1.3 millert 89: setboolean(value(VERBOSE), FALSE);
1.1 deraadt 90: if (conflag)
91: disconnect(NOSTR);
92: else
93: (*acu->acu_abort)();
94: }
95: return ("interrupt");
96: }
97: if ((acu = acutype(AT)) == NOACU)
98: return ("unknown ACU type");
99: if (*cp != '@') {
100: while (*cp) {
1.6 krw 101: phnum = cp;
102: cp = strpbrk(cp, ",");
103: if (*cp != '\0')
1.1 deraadt 104: *cp++ = '\0';
1.6 krw 105:
106: if (strlen(phnum) == 0)
107: continue;
108:
109: conflag = (*acu->acu_dialer)(phnum, CU);
110: if (conflag)
111: break;
112:
113: logent(value(HOST), phnum, acu->acu_name, "call failed");
1.1 deraadt 114: tried++;
115: }
116: } else {
1.13 ! deraadt 117: if ((fp = fopen(PH, "r")) == NOFILE) {
1.1 deraadt 118: printf("%s: ", PH);
119: return ("can't open phone number file");
120: }
1.13 ! deraadt 121: while (fgets(string, sizeof(string), fp) != NOSTR) {
1.6 krw 122: cp = &string[strcspn(string, " \t\n")];
123: if (*cp != '\0')
124: *cp++ = '\0';
125:
126: if (strcmp(string, value(HOST)) != 0)
1.1 deraadt 127: continue;
1.6 krw 128:
129: cp += strspn(cp, " \t\n");
130: phnum = cp;
131: *(cp + strcspn(cp, ",\n")) = '\0';
132:
133: if (strlen(phnum) == 0)
134: continue;
135:
136: conflag = (*acu->acu_dialer)(phnum, CU);
137: if (conflag)
138: break;
1.11 deraadt 139:
1.6 krw 140: logent(value(HOST), phnum, acu->acu_name, "call failed");
1.1 deraadt 141: tried++;
142: }
1.13 ! deraadt 143: fclose(fp);
1.1 deraadt 144: }
1.6 krw 145: if (conflag) {
146: if (CM != NOSTR)
147: parwrite(FD, CM, size(CM));
148: logent(value(HOST), phnum, acu->acu_name, "call completed");
149: return (NOSTR);
150: } else if (!tried) {
1.1 deraadt 151: logent(value(HOST), "", acu->acu_name, "missing phone number");
1.6 krw 152: return ("missing phone number");
153: } else {
1.1 deraadt 154: (*acu->acu_abort)();
1.6 krw 155: return ("call failed");
156: }
1.1 deraadt 157: }
158:
1.4 deraadt 159: void
1.11 deraadt 160: disconnect(char *reason)
1.1 deraadt 161: {
162: if (!conflag) {
163: logent(value(HOST), "", DV, "call terminated");
164: return;
165: }
166: if (reason == NOSTR) {
167: logent(value(HOST), "", acu->acu_name, "call terminated");
168: if (boolean(value(VERBOSE)))
169: printf("\r\ndisconnecting...");
1.11 deraadt 170: } else
1.1 deraadt 171: logent(value(HOST), "", acu->acu_name, reason);
172: (*acu->acu_disconnect)();
173: }
174:
175: static void
1.10 deraadt 176: acuabort(int s)
1.1 deraadt 177: {
178: signal(s, SIG_IGN);
179: longjmp(jmpbuf, 1);
180: }
181:
182: static acu_t *
1.11 deraadt 183: acutype(char *s)
1.1 deraadt 184: {
1.7 millert 185: acu_t *p;
1.1 deraadt 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: }
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