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