1 /* $NetBSD: v831.c,v 1.8 1998/12/19 23:02:21 christos 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. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 #ifndef lint 38 #if 0 39 static char sccsid[] = "@(#)v831.c 8.1 (Berkeley) 6/6/93"; 40 #endif 41 __RCSID("$NetBSD: v831.c,v 1.8 1998/12/19 23:02:21 christos Exp $"); 42 #endif /* not lint */ 43 44 /* 45 * Routines for dialing up on Vadic 831 46 */ 47 #include "tip.h" 48 49 static jmp_buf jmpbuf; 50 static int child = -1; 51 52 static void alarmtr __P((int)); 53 static int dialit __P((char *, char *)); 54 static char *sanitize __P((char *)); 55 56 int 57 v831_dialer(num, acu) 58 char *num, *acu; 59 { 60 int status, pid; 61 int timelim; 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 static void 121 alarmtr(dummy) 122 int dummy; 123 { 124 125 alarm(0); 126 longjmp(jmpbuf, 1); 127 } 128 129 /* 130 * Insurance, for some reason we don't seem to be 131 * hanging up... 132 */ 133 void 134 v831_disconnect() 135 { 136 struct termios cntrl; 137 138 sleep(2); 139 #ifdef DEBUG 140 printf("[disconnect: FD=%d]\n", FD); 141 #endif 142 if (FD > 0) { 143 ioctl(FD, TIOCCDTR, 0); 144 tcgetattr(FD, &cntrl); 145 cfsetospeed(&cntrl, 0); 146 cfsetispeed(&cntrl, 0); 147 tcsetattr(FD, TCSAFLUSH, &cntrl); 148 ioctl(FD, TIOCNXCL, NULL); 149 } 150 close(FD); 151 } 152 153 void 154 v831_abort() 155 { 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 (AC > 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 { 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(phonenum, acu) 192 char *phonenum; 193 char *acu; 194 { 195 struct vaconfig *vp; 196 struct termios cntrl; 197 char c; 198 int i; 199 200 phonenum = sanitize(phonenum); 201 #ifdef DEBUG 202 printf ("(dial phonenum=%s)\n", phonenum); 203 #endif 204 if (*phonenum == '<' && phonenum[1] == 0) 205 return ('Z'); 206 for (vp = vaconfig; vp->vc_name; vp++) 207 if (strcmp(vp->vc_name, acu) == 0) 208 break; 209 if (vp->vc_name == 0) { 210 printf("Unable to locate dialer (%s)\n", acu); 211 return ('K'); 212 } 213 tcgetattr(AC, &cntrl); 214 cfsetospeed(&cntrl, B2400); 215 cfsetispeed(&cntrl, B2400); 216 cntrl.c_cflag |= PARODD | PARENB; 217 cntrl.c_lflag &= ~(ISIG | ICANON); 218 tcsetattr(AC, TCSANOW, &cntrl); 219 tcflush(AC, TCIOFLUSH); 220 pc(STX); 221 pc(vp->vc_rack); 222 pc(vp->vc_modem); 223 while (*phonenum && *phonenum != '<') 224 pc(*phonenum++); 225 pc(SI); 226 pc(ETX); 227 sleep(1); 228 i = read(AC, &c, 1); 229 #ifdef DEBUG 230 printf("read %d chars, char=%c, errno %d\n", i, c, errno); 231 #endif 232 if (i != 1) 233 c = 'M'; 234 if (c == 'B' || c == 'G') { 235 char cc, oc = c; 236 237 pc(ABORT); 238 read(AC, &cc, 1); 239 #ifdef DEBUG 240 printf("abort response=%c\n", cc); 241 #endif 242 c = oc; 243 v831_disconnect(); 244 } 245 close(AC); 246 #ifdef DEBUG 247 printf("dialit: returns %c\n", c); 248 #endif 249 return (c); 250 } 251 252 static char * 253 sanitize(s) 254 char *s; 255 { 256 static char buf[128]; 257 char *cp; 258 259 for (cp = buf; *s && buf + sizeof buf - cp > 1; s++) { 260 if (!isdigit((unsigned char)*s) && *s == '<' && *s != '_') 261 continue; 262 if (*s == '_') 263 *s = '='; 264 *cp++ = *s; 265 } 266 *cp++ = 0; 267 return (buf); 268 } 269