1 /* $NetBSD: v831.c,v 1.13 2016/06/30 05:56:46 dholland Exp $ */
2
3 /*
4 * Copyright (c) 1983, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32 #include <sys/cdefs.h>
33 #ifndef lint
34 #if 0
35 static char sccsid[] = "@(#)v831.c 8.1 (Berkeley) 6/6/93";
36 #endif
37 __RCSID("$NetBSD: v831.c,v 1.13 2016/06/30 05:56:46 dholland Exp $");
38 #endif /* not lint */
39
40 /*
41 * Routines for dialing up on Vadic 831
42 */
43 #include "tip.h"
44
45 static jmp_buf jmpbuf;
46 static int child = -1;
47
48 static void alarmtr(int);
49 static int dialit(char *, char *);
50 static char *sanitize(char *);
51
52 int
v831_dialer(char * num,char * acu)53 v831_dialer(char *num, char *acu)
54 {
55 int status, mypid;
56 int timelim;
57
58 if (boolean(value(VERBOSE)))
59 (void)printf("\nstarting call...");
60 #ifdef DEBUG
61 (void)printf("(acu=%s)\n", acu);
62 #endif
63 if ((AC = open(acu, O_RDWR)) < 0) {
64 if (errno == EBUSY)
65 (void)printf("line busy...");
66 else
67 (void)printf("acu open error...");
68 return (0);
69 }
70 if (setjmp(jmpbuf)) {
71 (void)kill(child, SIGKILL);
72 (void)close(AC);
73 return (0);
74 }
75 (void)signal(SIGALRM, alarmtr);
76 timelim = 5 * strlen(num);
77 (void)alarm((unsigned)(timelim < 30 ? 30 : timelim));
78 if ((child = fork()) == 0) {
79 /*
80 * ignore this stuff for aborts
81 */
82 (void)signal(SIGALRM, SIG_IGN);
83 (void)signal(SIGINT, SIG_IGN);
84 (void)signal(SIGQUIT, SIG_IGN);
85 (void)sleep(2);
86 exit(dialit(num, acu) != 'A');
87 }
88 /*
89 * open line - will return on carrier
90 */
91 if ((FD = open(DV, O_RDWR)) < 0) {
92 #ifdef DEBUG
93 (void)printf("(after open, errno=%d)\n", errno);
94 #endif
95 if (errno == EIO)
96 (void)printf("lost carrier...");
97 else
98 (void)printf("dialup line open failed...");
99 (void)alarm(0);
100 (void)kill(child, SIGKILL);
101 (void)close(AC);
102 return (0);
103 }
104 (void)alarm(0);
105 (void)signal(SIGALRM, SIG_DFL);
106 while ((mypid = wait(&status)) != child && mypid != -1)
107 ;
108 if (status) {
109 (void)close(AC);
110 return (0);
111 }
112 return (1);
113 }
114
115 static void
116 /*ARGSUSED*/
alarmtr(int dummy __unused)117 alarmtr(int dummy __unused)
118 {
119
120 (void)alarm(0);
121 longjmp(jmpbuf, 1);
122 }
123
124 /*
125 * Insurance, for some reason we don't seem to be
126 * hanging up...
127 */
128 void
v831_disconnect(void)129 v831_disconnect(void)
130 {
131 struct termios cntrl;
132
133 (void)sleep(2);
134 #ifdef DEBUG
135 (void)printf("[disconnect: FD=%d]\n", FD);
136 #endif
137 if (FD > 0) {
138 (void)ioctl(FD, TIOCCDTR, 0);
139 (void)tcgetattr(FD, &cntrl);
140 (void)cfsetospeed(&cntrl, 0);
141 (void)cfsetispeed(&cntrl, 0);
142 (void)tcsetattr(FD, TCSAFLUSH, &cntrl);
143 (void)ioctl(FD, TIOCNXCL, NULL);
144 }
145 (void)close(FD);
146 }
147
148 void
v831_abort(void)149 v831_abort(void)
150 {
151
152 #ifdef DEBUG
153 (void)printf("[abort: AC=%d]\n", AC);
154 #endif
155 (void)sleep(2);
156 if (child > 0)
157 (void)kill(child, SIGKILL);
158 if (AC > 0)
159 (void)ioctl(FD, TIOCNXCL, NULL);
160 (void)close(AC);
161 if (FD > 0)
162 (void)ioctl(FD, TIOCCDTR, 0);
163 (void)close(FD);
164 }
165
166 /*
167 * Sigh, this probably must be changed at each site.
168 */
169 struct vaconfig {
170 const char *vc_name;
171 char vc_rack;
172 char vc_modem;
173 } vaconfig[] = {
174 { "/dev/cua0",'4','0' },
175 { "/dev/cua1",'4','1' },
176 { 0, '\0', '\0' }
177 };
178
179 #define pc(x) (void)(c = x, write(AC,&c,1))
180 #define ABORT 01
181 #define SI 017
182 #define STX 02
183 #define ETX 03
184
185 static int
dialit(char * phonenum,char * acu)186 dialit(char *phonenum, char *acu)
187 {
188 struct vaconfig *vp;
189 struct termios cntrl;
190 char c;
191 int i;
192
193 phonenum = sanitize(phonenum);
194 #ifdef DEBUG
195 (void)printf("(dial phonenum=%s)\n", phonenum);
196 #endif
197 if (*phonenum == '<' && phonenum[1] == 0)
198 return ('Z');
199 for (vp = vaconfig; vp->vc_name; vp++)
200 if (strcmp(vp->vc_name, acu) == 0)
201 break;
202 if (vp->vc_name == 0) {
203 (void)printf("Unable to locate dialer (%s)\n", acu);
204 return ('K');
205 }
206 (void)tcgetattr(AC, &cntrl);
207 (void)cfsetospeed(&cntrl, B2400);
208 (void)cfsetispeed(&cntrl, B2400);
209 cntrl.c_cflag |= PARODD | PARENB;
210 cntrl.c_lflag &= ~(ISIG | ICANON);
211 (void)tcsetattr(AC, TCSANOW, &cntrl);
212 (void)tcflush(AC, TCIOFLUSH);
213 pc(STX);
214 pc(vp->vc_rack);
215 pc(vp->vc_modem);
216 while (*phonenum && *phonenum != '<')
217 pc(*phonenum++);
218 pc(SI);
219 pc(ETX);
220 (void)sleep(1);
221 i = read(AC, &c, 1);
222 #ifdef DEBUG
223 (void)printf("read %d chars, char=%c, errno %d\n", i, c, errno);
224 #endif
225 if (i != 1)
226 c = 'M';
227 if (c == 'B' || c == 'G') {
228 char cc, oc = c;
229
230 pc(ABORT);
231 (void)read(AC, &cc, 1);
232 #ifdef DEBUG
233 (void)printf("abort response=%c\n", cc);
234 #endif
235 c = oc;
236 v831_disconnect();
237 }
238 (void)close(AC);
239 #ifdef DEBUG
240 (void)printf("dialit: returns %c\n", c);
241 #endif
242 return (c);
243 }
244
245 static char *
sanitize(char * s)246 sanitize(char *s)
247 {
248 static char buf[128];
249 char *cp;
250
251 for (cp = buf; *s && buf + sizeof buf - cp > 1; s++) {
252 if (!isdigit((unsigned char)*s) && *s != '<' && *s != '_')
253 continue;
254 if (*s == '_')
255 *s = '=';
256 *cp++ = *s;
257 }
258 *cp++ = 0;
259 return (buf);
260 }
261