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 #ifndef lint 37 #if 0 38 static char sccsid[] = "@(#)v831.c 8.1 (Berkeley) 6/6/93"; 39 static const char rcsid[] = "$OpenBSD: v831.c,v 1.11 2006/03/17 19:17:13 moritz Exp $"; 40 #endif 41 #endif /* not lint */ 42 43 /* 44 * Routines for dialing up on Vadic 831 45 */ 46 #include "tip.h" 47 #include <termios.h> 48 49 static jmp_buf jmpbuf; 50 static pid_t child = -1; 51 52 static void alarmtr(int); 53 static int dialit(char *, char *); 54 static char * sanitize(char *); 55 56 int 57 v831_dialer(char *num, char *acu) 58 { 59 int status; 60 int timelim; 61 pid_t pid; 62 63 if (boolean(value(VERBOSE))) 64 printf("\nstarting call..."); 65 #ifdef DEBUG 66 printf ("(acu=%s)\n", acu); 67 #endif 68 if ((AC = open(acu, O_RDWR)) < 0) { 69 if (errno == EBUSY) 70 printf("line busy..."); 71 else 72 printf("acu open error..."); 73 return (0); 74 } 75 if (setjmp(jmpbuf)) { 76 kill(child, SIGKILL); 77 close(AC); 78 return (0); 79 } 80 signal(SIGALRM, alarmtr); 81 timelim = 5 * strlen(num); 82 alarm(timelim < 30 ? 30 : timelim); 83 if ((child = fork()) == 0) { 84 /* 85 * ignore this stuff for aborts 86 */ 87 signal(SIGALRM, SIG_IGN); 88 signal(SIGINT, SIG_IGN); 89 signal(SIGQUIT, SIG_IGN); 90 sleep(2); 91 exit(dialit(num, acu) != 'A'); 92 } 93 /* 94 * open line - will return on carrier 95 */ 96 if ((FD = open(DV, O_RDWR)) < 0) { 97 #ifdef DEBUG 98 printf("(after open, errno=%d)\n", errno); 99 #endif 100 if (errno == EIO) 101 printf("lost carrier..."); 102 else 103 printf("dialup line open failed..."); 104 alarm(0); 105 kill(child, SIGKILL); 106 close(AC); 107 return (0); 108 } 109 alarm(0); 110 signal(SIGALRM, SIG_DFL); 111 while ((pid = wait(&status)) != child && pid != -1) 112 ; 113 if (status) { 114 close(AC); 115 return (0); 116 } 117 return (1); 118 } 119 120 /*ARGSUSED*/ 121 static void 122 alarmtr(int signo) 123 { 124 alarm(0); 125 longjmp(jmpbuf, 1); 126 } 127 128 /* 129 * Insurance, for some reason we don't seem to be 130 * hanging up... 131 */ 132 void 133 v831_disconnect(void) 134 { 135 struct termios cntrl; 136 137 sleep(2); 138 #ifdef DEBUG 139 printf("[disconnect: FD=%d]\n", FD); 140 #endif 141 if (FD > 0) { 142 ioctl(FD, TIOCCDTR, 0); 143 tcgetattr(FD, &cntrl); 144 cfsetospeed(&cntrl, 0); 145 cfsetispeed(&cntrl, 0); 146 tcsetattr(FD, TCSAFLUSH, &cntrl); 147 ioctl(FD, TIOCNXCL, NULL); 148 } 149 close(FD); 150 } 151 152 void 153 v831_abort(void) 154 { 155 #ifdef DEBUG 156 printf("[abort: AC=%d]\n", AC); 157 #endif 158 sleep(2); 159 if (child > 0) 160 kill(child, SIGKILL); 161 if (FD > 0) 162 ioctl(FD, TIOCNXCL, NULL); 163 close(AC); 164 if (FD > 0) 165 ioctl(FD, TIOCCDTR, 0); 166 close(FD); 167 } 168 169 /* 170 * Sigh, this probably must be changed at each site. 171 */ 172 struct vaconfig { 173 char *vc_name; 174 char vc_rack; 175 char vc_modem; 176 } vaconfig[] = { 177 { "/dev/cua0",'4','0' }, 178 { "/dev/cua1",'4','1' }, 179 { NULL, '\0', '\0' } 180 }; 181 182 #define pc(x) (c = x, write(AC,&c,1)) 183 #define ABORT 01 184 #define SI 017 185 #define STX 02 186 #define ETX 03 187 188 static int 189 dialit(char *phonenum, char *acu) 190 { 191 struct vaconfig *vp; 192 struct termios cntrl; 193 char c; 194 int i; 195 196 phonenum = sanitize(phonenum); 197 #ifdef DEBUG 198 printf ("(dial phonenum=%s)\n", phonenum); 199 #endif 200 if (*phonenum == '<' && phonenum[1] == 0) 201 return ('Z'); 202 for (vp = vaconfig; vp->vc_name; vp++) 203 if (strcmp(vp->vc_name, acu) == 0) 204 break; 205 if (vp->vc_name == 0) { 206 printf("Unable to locate dialer (%s)\n", acu); 207 return ('K'); 208 } 209 tcgetattr(AC, &cntrl); 210 cfsetospeed(&cntrl, B2400); 211 cfsetispeed(&cntrl, B2400); 212 cntrl.c_cflag |= PARODD | PARENB; 213 cntrl.c_lflag &= ~(ISIG | ICANON); 214 tcsetattr(AC, TCSANOW, &cntrl); 215 tcflush(AC, TCIOFLUSH); 216 pc(STX); 217 pc(vp->vc_rack); 218 pc(vp->vc_modem); 219 while (*phonenum && *phonenum != '<') 220 pc(*phonenum++); 221 pc(SI); 222 pc(ETX); 223 sleep(1); 224 i = read(AC, &c, 1); 225 #ifdef DEBUG 226 printf("read %d chars, char=%c, errno %d\n", i, c, errno); 227 #endif 228 if (i != 1) 229 c = 'M'; 230 if (c == 'B' || c == 'G') { 231 char cc, oc = c; 232 233 pc(ABORT); 234 read(AC, &cc, 1); 235 #ifdef DEBUG 236 printf("abort response=%c\n", cc); 237 #endif 238 c = oc; 239 v831_disconnect(); 240 } 241 close(AC); 242 #ifdef DEBUG 243 printf("dialit: returns %c\n", c); 244 #endif 245 return (c); 246 } 247 248 static char * 249 sanitize(char *s) 250 { 251 static char buf[128]; 252 char *cp; 253 254 for (cp = buf; *s; s++) { 255 if (!isdigit(*s) && *s == '<' && *s != '_') 256 continue; 257 if (*s == '_') 258 *s = '='; 259 *cp++ = *s; 260 } 261 *cp++ = 0; 262 return (buf); 263 } 264