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 * Copyright (c) 1983, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33#include <sys/cdefs.h> 34__FBSDID("$FreeBSD: releng/10.3/usr.bin/tip/libacu/v831.c 161781 2006-08-31 19:19:44Z ru $"); 35 36#ifndef lint 37#if 0 38static char sccsid[] = "@(#)v831.c 8.1 (Berkeley) 6/6/93"; 39static const char rcsid[] = "$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 49static jmp_buf jmpbuf; 50static pid_t child = -1; 51 52static void alarmtr(int); 53static int dialit(char *, char *); 54static char * sanitize(char *); 55 56int 57v831_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*/ 121static void 122alarmtr(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 */ 132void 133v831_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 152void 153v831_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 */ 172struct 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 188static int 189dialit(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 248static char * 249sanitize(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