1 /*
2 * Copyright 2005 Sun Microsystems, Inc. All rights reserved.
3 * Use is subject to license terms.
4 */
5
6 /*
7 * Copyright (c) 1983 Regents of the University of California.
8 * All rights reserved. The Berkeley software License Agreement
9 * specifies the terms and conditions for redistribution.
10 */
11
12 #include "tip.h"
13
14 extern acu_t acutable[];
15
16 static acu_t *acu = NOACU;
17 static int conflag;
18 static void acuabort(int);
19 static acu_t *acutype(char *);
20 static sigjmp_buf jmpbuf;
21
22 /*
23 * Establish connection for tip
24 *
25 * If DU is true, we should dial an ACU whose type is AT.
26 * The phone numbers are in PN, and the call unit is in CU.
27 *
28 * If the PN is an '@', then we consult the PHONES file for
29 * the phone numbers. This file is /etc/phones, unless overriden
30 * by an exported shell variable.
31 *
32 * The data base files must be in the format:
33 * host-name[ \t]*phone-number
34 * with the possibility of multiple phone numbers
35 * for a single host acting as a rotary (in the order
36 * found in the file).
37 */
38 char *
connect(void)39 connect(void)
40 {
41 char *cp = PN;
42 char *phnum, string[256];
43 int tried = 0;
44
45 if (!DU)
46 return (NOSTR);
47 /*
48 * @ =>'s use data base in PHONES environment variable
49 * otherwise, use /etc/phones
50 */
51 if (sigsetjmp(jmpbuf, 1)) {
52 (void) signal(SIGINT, SIG_IGN);
53 (void) signal(SIGQUIT, SIG_IGN);
54 (void) printf("\ncall aborted\n");
55 logent(value(HOST), "", "", "call aborted");
56 if (acu != NOACU) {
57 boolean(value(VERBOSE)) = FALSE;
58 if (conflag)
59 disconnect(NOSTR);
60 else
61 (*acu->acu_abort)();
62 }
63 myperm();
64 delock(uucplock);
65 exit(1);
66 }
67 (void) signal(SIGINT, acuabort);
68 (void) signal(SIGQUIT, acuabort);
69 if ((acu = acutype(AT)) == NOACU)
70 return ("unknown ACU type");
71 if (*cp != '@') {
72 while (*cp) {
73 for (phnum = cp; *cp && *cp != '|'; cp++)
74 ;
75 if (*cp)
76 *cp++ = '\0';
77
78 if (conflag = (*acu->acu_dialer)(phnum, CU)) {
79 logent(value(HOST), phnum, acu->acu_name,
80 "call completed");
81 return (NOSTR);
82 } else
83 logent(value(HOST), phnum, acu->acu_name,
84 "call failed");
85 tried++;
86 }
87 } else {
88 if (phfd == NOFILE) {
89 (void) printf("%s: ", PH);
90 return ("can't open phone number file");
91 }
92 rewind(phfd);
93 while (fgets(string, sizeof (string), phfd) != NOSTR) {
94 if (string[0] == '#')
95 continue;
96 for (cp = string; !any(*cp, " \t\n"); cp++)
97 ;
98 if (*cp == '\n')
99 return ("unrecognizable host name");
100 *cp++ = '\0';
101 if (!equal(string, value(HOST)))
102 continue;
103 while (any(*cp, " \t"))
104 cp++;
105 if (*cp == '\n')
106 return ("missing phone number");
107 for (phnum = cp; *cp && *cp != '|' && *cp != '\n'; cp++)
108 ;
109 *cp = '\0';
110
111 if (conflag = (*acu->acu_dialer)(phnum, CU)) {
112 logent(value(HOST), phnum, acu->acu_name,
113 "call completed");
114 return (NOSTR);
115 } else
116 logent(value(HOST), phnum, acu->acu_name,
117 "call failed");
118 tried++;
119 }
120 }
121 if (!tried)
122 logent(value(HOST), "", acu->acu_name, "missing phone number");
123 else
124 (*acu->acu_abort)();
125 return (tried ? "call failed" : "missing phone number");
126 }
127
128 void
disconnect(char * reason)129 disconnect(char *reason)
130 {
131 if (!conflag)
132 return;
133 if (reason == NOSTR) {
134 logent(value(HOST), "", acu->acu_name, "call terminated");
135 if (boolean(value(VERBOSE)))
136 (void) printf("\r\ndisconnecting...");
137 } else
138 logent(value(HOST), "", acu->acu_name, reason);
139 (*acu->acu_disconnect)();
140 }
141
142 static void
acuabort(int s)143 acuabort(int s)
144 {
145 (void) signal(s, SIG_IGN);
146 siglongjmp(jmpbuf, 1);
147 }
148
149 static acu_t *
acutype(char * s)150 acutype(char *s)
151 {
152 acu_t *p;
153
154 if (s != NOSTR)
155 for (p = acutable; p->acu_name != NULL; p++)
156 if (equal(s, p->acu_name))
157 return (p);
158 return (NOACU);
159 }
160