1 /* $OpenBSD: v831.c,v 1.11 2006/03/17 19:17:13 moritz Exp $ */ 2 /* $NetBSD: v831.c,v 1.5 1996/12/29 10:42:01 cgd Exp $ */ 3 4 /*- 5 * SPDX-License-Identifier: BSD-3-Clause 6 * 7 * Copyright (c) 1983, 1993 8 * The Regents of the University of California. All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 #include <sys/cdefs.h> 36 __FBSDID("$FreeBSD$"); 37 38 #ifndef lint 39 #if 0 40 static char sccsid[] = "@(#)v831.c 8.1 (Berkeley) 6/6/93"; 41 static const char rcsid[] = "$OpenBSD: v831.c,v 1.11 2006/03/17 19:17:13 moritz Exp $"; 42 #endif 43 #endif /* not lint */ 44 45 /* 46 * Routines for dialing up on Vadic 831 47 */ 48 #include "tip.h" 49 #include <termios.h> 50 51 static jmp_buf jmpbuf; 52 static pid_t child = -1; 53 54 static void alarmtr(int); 55 static int dialit(char *, char *); 56 static char * sanitize(char *); 57 58 int 59 v831_dialer(char *num, char *acu) 60 { 61 int status; 62 int timelim; 63 pid_t pid; 64 65 if (boolean(value(VERBOSE))) 66 printf("\nstarting call..."); 67 #ifdef DEBUG 68 printf ("(acu=%s)\n", acu); 69 #endif 70 if ((AC = open(acu, O_RDWR)) < 0) { 71 if (errno == EBUSY) 72 printf("line busy..."); 73 else 74 printf("acu open error..."); 75 return (0); 76 } 77 if (setjmp(jmpbuf)) { 78 kill(child, SIGKILL); 79 close(AC); 80 return (0); 81 } 82 signal(SIGALRM, alarmtr); 83 timelim = 5 * strlen(num); 84 alarm(timelim < 30 ? 30 : timelim); 85 if ((child = fork()) == 0) { 86 /* 87 * ignore this stuff for aborts 88 */ 89 signal(SIGALRM, SIG_IGN); 90 signal(SIGINT, SIG_IGN); 91 signal(SIGQUIT, SIG_IGN); 92 sleep(2); 93 exit(dialit(num, acu) != 'A'); 94 } 95 /* 96 * open line - will return on carrier 97 */ 98 if ((FD = open(DV, O_RDWR)) < 0) { 99 #ifdef DEBUG 100 printf("(after open, errno=%d)\n", errno); 101 #endif 102 if (errno == EIO) 103 printf("lost carrier..."); 104 else 105 printf("dialup line open failed..."); 106 alarm(0); 107 kill(child, SIGKILL); 108 close(AC); 109 return (0); 110 } 111 alarm(0); 112 signal(SIGALRM, SIG_DFL); 113 while ((pid = wait(&status)) != child && pid != -1) 114 ; 115 if (status) { 116 close(AC); 117 return (0); 118 } 119 return (1); 120 } 121 122 /*ARGSUSED*/ 123 static void 124 alarmtr(int signo) 125 { 126 alarm(0); 127 longjmp(jmpbuf, 1); 128 } 129 130 /* 131 * Insurance, for some reason we don't seem to be 132 * hanging up... 133 */ 134 void 135 v831_disconnect(void) 136 { 137 struct termios cntrl; 138 139 sleep(2); 140 #ifdef DEBUG 141 printf("[disconnect: FD=%d]\n", FD); 142 #endif 143 if (FD > 0) { 144 ioctl(FD, TIOCCDTR, 0); 145 tcgetattr(FD, &cntrl); 146 cfsetospeed(&cntrl, 0); 147 cfsetispeed(&cntrl, 0); 148 tcsetattr(FD, TCSAFLUSH, &cntrl); 149 ioctl(FD, TIOCNXCL, NULL); 150 } 151 close(FD); 152 } 153 154 void 155 v831_abort(void) 156 { 157 #ifdef DEBUG 158 printf("[abort: AC=%d]\n", AC); 159 #endif 160 sleep(2); 161 if (child > 0) 162 kill(child, SIGKILL); 163 if (FD > 0) 164 ioctl(FD, TIOCNXCL, NULL); 165 close(AC); 166 if (FD > 0) 167 ioctl(FD, TIOCCDTR, 0); 168 close(FD); 169 } 170 171 /* 172 * Sigh, this probably must be changed at each site. 173 */ 174 struct vaconfig { 175 char *vc_name; 176 char vc_rack; 177 char vc_modem; 178 } vaconfig[] = { 179 { "/dev/cua0",'4','0' }, 180 { "/dev/cua1",'4','1' }, 181 { NULL, '\0', '\0' } 182 }; 183 184 #define pc(x) (c = x, write(AC,&c,1)) 185 #define ABORT 01 186 #define SI 017 187 #define STX 02 188 #define ETX 03 189 190 static int 191 dialit(char *phonenum, char *acu) 192 { 193 struct vaconfig *vp; 194 struct termios cntrl; 195 char c; 196 int i; 197 198 phonenum = sanitize(phonenum); 199 #ifdef DEBUG 200 printf ("(dial phonenum=%s)\n", phonenum); 201 #endif 202 if (*phonenum == '<' && phonenum[1] == 0) 203 return ('Z'); 204 for (vp = vaconfig; vp->vc_name; vp++) 205 if (strcmp(vp->vc_name, acu) == 0) 206 break; 207 if (vp->vc_name == 0) { 208 printf("Unable to locate dialer (%s)\n", acu); 209 return ('K'); 210 } 211 tcgetattr(AC, &cntrl); 212 cfsetospeed(&cntrl, B2400); 213 cfsetispeed(&cntrl, B2400); 214 cntrl.c_cflag |= PARODD | PARENB; 215 cntrl.c_lflag &= ~(ISIG | ICANON); 216 tcsetattr(AC, TCSANOW, &cntrl); 217 tcflush(AC, TCIOFLUSH); 218 pc(STX); 219 pc(vp->vc_rack); 220 pc(vp->vc_modem); 221 while (*phonenum && *phonenum != '<') 222 pc(*phonenum++); 223 pc(SI); 224 pc(ETX); 225 sleep(1); 226 i = read(AC, &c, 1); 227 #ifdef DEBUG 228 printf("read %d chars, char=%c, errno %d\n", i, c, errno); 229 #endif 230 if (i != 1) 231 c = 'M'; 232 if (c == 'B' || c == 'G') { 233 char cc, oc = c; 234 235 pc(ABORT); 236 read(AC, &cc, 1); 237 #ifdef DEBUG 238 printf("abort response=%c\n", cc); 239 #endif 240 c = oc; 241 v831_disconnect(); 242 } 243 close(AC); 244 #ifdef DEBUG 245 printf("dialit: returns %c\n", c); 246 #endif 247 return (c); 248 } 249 250 static char * 251 sanitize(char *s) 252 { 253 static char buf[128]; 254 char *cp; 255 256 for (cp = buf; *s; s++) { 257 if (!isdigit(*s) && *s == '<' && *s != '_') 258 continue; 259 if (*s == '_') 260 *s = '='; 261 *cp++ = *s; 262 } 263 *cp++ = 0; 264 return (buf); 265 } 266