Annotation of src/usr.bin/tip/acu.c, Revision 1.8
1.8 ! hugh 1: /* $OpenBSD: acu.c,v 1.7 2001/10/24 18:38:58 millert 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.
16: * 3. All advertising materials mentioning features or use of this software
17: * must display the following acknowledgement:
18: * This product includes software developed by the University of
19: * California, Berkeley and its contributors.
20: * 4. Neither the name of the University nor the names of its contributors
21: * may be used to endorse or promote products derived from this software
22: * without specific prior written permission.
23: *
24: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34: * SUCH DAMAGE.
35: */
36:
37: #ifndef lint
38: #if 0
39: static char sccsid[] = "@(#)acu.c 8.1 (Berkeley) 6/6/93";
40: #endif
1.8 ! hugh 41: static const char rcsid[] = "$OpenBSD: acu.c,v 1.7 2001/10/24 18:38:58 millert Exp $";
1.1 deraadt 42: #endif /* not lint */
43:
44: #include "tip.h"
45:
46: static acu_t *acu = NOACU;
47: static int conflag;
48: static void acuabort();
49: static acu_t *acutype();
50: static jmp_buf jmpbuf;
51: /*
52: * Establish connection for tip
53: *
54: * If DU is true, we should dial an ACU whose type is AT.
55: * The phone numbers are in PN, and the call unit is in CU.
56: *
57: * If the PN is an '@', then we consult the PHONES file for
58: * the phone numbers. This file is /etc/phones, unless overriden
59: * by an exported shell variable.
60: *
61: * The data base files must be in the format:
62: * host-name[ \t]*phone-number
63: * with the possibility of multiple phone numbers
64: * for a single host acting as a rotary (in the order
65: * found in the file).
66: */
67: char *
68: connect()
69: {
1.7 millert 70: char *cp = PN;
1.1 deraadt 71: char *phnum, string[256];
72: FILE *fd;
1.4 deraadt 73: volatile int tried = 0;
1.1 deraadt 74:
75: if (!DU) { /* regular connect message */
76: if (CM != NOSTR)
1.5 deraadt 77: parwrite(FD, CM, size(CM));
1.1 deraadt 78: logent(value(HOST), "", DV, "call completed");
79: return (NOSTR);
80: }
81: /*
82: * @ =>'s use data base in PHONES environment variable
83: * otherwise, use /etc/phones
84: */
85: signal(SIGINT, acuabort);
86: signal(SIGQUIT, acuabort);
87: if (setjmp(jmpbuf)) {
88: signal(SIGINT, SIG_IGN);
89: signal(SIGQUIT, SIG_IGN);
90: printf("\ncall aborted\n");
91: logent(value(HOST), "", "", "call aborted");
92: if (acu != NOACU) {
1.3 millert 93: setboolean(value(VERBOSE), FALSE);
1.1 deraadt 94: if (conflag)
95: disconnect(NOSTR);
96: else
97: (*acu->acu_abort)();
98: }
99: return ("interrupt");
100: }
101: if ((acu = acutype(AT)) == NOACU)
102: return ("unknown ACU type");
103: if (*cp != '@') {
104: while (*cp) {
1.6 krw 105: phnum = cp;
106: cp = strpbrk(cp, ",");
107: if (*cp != '\0')
1.1 deraadt 108: *cp++ = '\0';
1.6 krw 109:
110: if (strlen(phnum) == 0)
111: continue;
112:
113: conflag = (*acu->acu_dialer)(phnum, CU);
114: if (conflag)
115: break;
116:
117: logent(value(HOST), phnum, acu->acu_name, "call failed");
1.1 deraadt 118: tried++;
119: }
120: } else {
121: if ((fd = fopen(PH, "r")) == NOFILE) {
122: printf("%s: ", PH);
123: return ("can't open phone number file");
124: }
125: while (fgets(string, sizeof(string), fd) != NOSTR) {
1.6 krw 126: cp = &string[strcspn(string, " \t\n")];
127: if (*cp != '\0')
128: *cp++ = '\0';
129:
130: if (strcmp(string, value(HOST)) != 0)
1.1 deraadt 131: continue;
1.6 krw 132:
133: cp += strspn(cp, " \t\n");
134: phnum = cp;
135: *(cp + strcspn(cp, ",\n")) = '\0';
136:
137: if (strlen(phnum) == 0)
138: continue;
139:
140: conflag = (*acu->acu_dialer)(phnum, CU);
141: if (conflag)
142: break;
1.1 deraadt 143:
1.6 krw 144: logent(value(HOST), phnum, acu->acu_name, "call failed");
1.1 deraadt 145: tried++;
146: }
147: fclose(fd);
148: }
1.6 krw 149: if (conflag) {
150: if (CM != NOSTR)
151: parwrite(FD, CM, size(CM));
152: logent(value(HOST), phnum, acu->acu_name, "call completed");
153: return (NOSTR);
154: } else if (!tried) {
1.1 deraadt 155: logent(value(HOST), "", acu->acu_name, "missing phone number");
1.6 krw 156: return ("missing phone number");
157: } else {
1.1 deraadt 158: (*acu->acu_abort)();
1.6 krw 159: return ("call failed");
160: }
1.1 deraadt 161: }
162:
1.4 deraadt 163: void
1.1 deraadt 164: disconnect(reason)
165: char *reason;
166: {
167: if (!conflag) {
168: logent(value(HOST), "", DV, "call terminated");
169: return;
170: }
171: if (reason == NOSTR) {
172: logent(value(HOST), "", acu->acu_name, "call terminated");
173: if (boolean(value(VERBOSE)))
174: printf("\r\ndisconnecting...");
175: } else
176: logent(value(HOST), "", acu->acu_name, reason);
177: (*acu->acu_disconnect)();
178: }
179:
180: static void
181: acuabort(s)
182: {
183: signal(s, SIG_IGN);
184: longjmp(jmpbuf, 1);
185: }
186:
187: static acu_t *
188: acutype(s)
1.7 millert 189: char *s;
1.1 deraadt 190: {
1.7 millert 191: acu_t *p;
1.1 deraadt 192: extern acu_t acutable[];
193:
194: for (p = acutable; p->acu_name != '\0'; p++)
195: if (!strcmp(s, p->acu_name))
196: return (p);
197: return (NOACU);
198: }
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