1 /* $NetBSD: v831.c,v 1.11 2006/04/03 00:51:14 perry 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 1.11 2006/04/03 00:51:14 perry 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 53 v831_dialer(char *num, char *acu) 54 { 55 int status, mypid; 56 int timelim; 57 58 if (boolean(value(VERBOSE))) 59 printf("\nstarting call..."); 60 #ifdef DEBUG 61 printf ("(acu=%s)\n", acu); 62 #endif 63 if ((AC = open(acu, O_RDWR)) < 0) { 64 if (errno == EBUSY) 65 printf("line busy..."); 66 else 67 printf("acu open error..."); 68 return (0); 69 } 70 if (setjmp(jmpbuf)) { 71 kill(child, SIGKILL); 72 close(AC); 73 return (0); 74 } 75 signal(SIGALRM, alarmtr); 76 timelim = 5 * strlen(num); 77 alarm(timelim < 30 ? 30 : timelim); 78 if ((child = fork()) == 0) { 79 /* 80 * ignore this stuff for aborts 81 */ 82 signal(SIGALRM, SIG_IGN); 83 signal(SIGINT, SIG_IGN); 84 signal(SIGQUIT, SIG_IGN); 85 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 printf("(after open, errno=%d)\n", errno); 94 #endif 95 if (errno == EIO) 96 printf("lost carrier..."); 97 else 98 printf("dialup line open failed..."); 99 alarm(0); 100 kill(child, SIGKILL); 101 close(AC); 102 return (0); 103 } 104 alarm(0); 105 signal(SIGALRM, SIG_DFL); 106 while ((mypid = wait(&status)) != child && mypid != -1) 107 ; 108 if (status) { 109 close(AC); 110 return (0); 111 } 112 return (1); 113 } 114 115 static void 116 alarmtr(int dummy) 117 { 118 119 alarm(0); 120 longjmp(jmpbuf, 1); 121 } 122 123 /* 124 * Insurance, for some reason we don't seem to be 125 * hanging up... 126 */ 127 void 128 v831_disconnect(void) 129 { 130 struct termios cntrl; 131 132 sleep(2); 133 #ifdef DEBUG 134 printf("[disconnect: FD=%d]\n", FD); 135 #endif 136 if (FD > 0) { 137 ioctl(FD, TIOCCDTR, 0); 138 tcgetattr(FD, &cntrl); 139 cfsetospeed(&cntrl, 0); 140 cfsetispeed(&cntrl, 0); 141 tcsetattr(FD, TCSAFLUSH, &cntrl); 142 ioctl(FD, TIOCNXCL, NULL); 143 } 144 close(FD); 145 } 146 147 void 148 v831_abort(void) 149 { 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 (AC > 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 const char *vc_name; 170 char vc_rack; 171 char vc_modem; 172 } vaconfig[] = { 173 { "/dev/cua0",'4','0' }, 174 { "/dev/cua1",'4','1' }, 175 { 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 && buf + sizeof buf - cp > 1; s++) { 251 if (!isdigit((unsigned char)*s) && *s == '<' && *s != '_') 252 continue; 253 if (*s == '_') 254 *s = '='; 255 *cp++ = *s; 256 } 257 *cp++ = 0; 258 return (buf); 259 } 260