1 /* $NetBSD: v831.c,v 1.6 1997/11/22 07:28:58 lukem 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 1.6 1997/11/22 07:28:58 lukem 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 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() 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() 154 { 155 156 #ifdef DEBUG 157 printf("[abort: AC=%d]\n", AC); 158 #endif 159 sleep(2); 160 if (child > 0) 161 kill(child, SIGKILL); 162 if (AC > 0) 163 ioctl(FD, TIOCNXCL, NULL); 164 close(AC); 165 if (FD > 0) 166 ioctl(FD, TIOCCDTR, 0); 167 close(FD); 168 } 169 170 /* 171 * Sigh, this probably must be changed at each site. 172 */ 173 struct vaconfig { 174 char *vc_name; 175 char vc_rack; 176 char vc_modem; 177 } vaconfig[] = { 178 { "/dev/cua0",'4','0' }, 179 { "/dev/cua1",'4','1' }, 180 { 0 } 181 }; 182 183 #define pc(x) (c = x, write(AC,&c,1)) 184 #define ABORT 01 185 #define SI 017 186 #define STX 02 187 #define ETX 03 188 189 static int 190 dialit(phonenum, acu) 191 char *phonenum; 192 char *acu; 193 { 194 struct vaconfig *vp; 195 struct termios cntrl; 196 char c; 197 int i; 198 199 phonenum = sanitize(phonenum); 200 #ifdef DEBUG 201 printf ("(dial phonenum=%s)\n", phonenum); 202 #endif 203 if (*phonenum == '<' && phonenum[1] == 0) 204 return ('Z'); 205 for (vp = vaconfig; vp->vc_name; vp++) 206 if (strcmp(vp->vc_name, acu) == 0) 207 break; 208 if (vp->vc_name == 0) { 209 printf("Unable to locate dialer (%s)\n", acu); 210 return ('K'); 211 } 212 tcgetattr(AC, &cntrl); 213 cfsetospeed(&cntrl, B2400); 214 cfsetispeed(&cntrl, B2400); 215 cntrl.c_cflag |= PARODD | PARENB; 216 cntrl.c_lflag &= ~(ISIG | ICANON); 217 tcsetattr(AC, TCSANOW, &cntrl); 218 tcflush(AC, TCIOFLUSH); 219 pc(STX); 220 pc(vp->vc_rack); 221 pc(vp->vc_modem); 222 while (*phonenum && *phonenum != '<') 223 pc(*phonenum++); 224 pc(SI); 225 pc(ETX); 226 sleep(1); 227 i = read(AC, &c, 1); 228 #ifdef DEBUG 229 printf("read %d chars, char=%c, errno %d\n", i, c, errno); 230 #endif 231 if (i != 1) 232 c = 'M'; 233 if (c == 'B' || c == 'G') { 234 char cc, oc = c; 235 236 pc(ABORT); 237 read(AC, &cc, 1); 238 #ifdef DEBUG 239 printf("abort response=%c\n", cc); 240 #endif 241 c = oc; 242 v831_disconnect(); 243 } 244 close(AC); 245 #ifdef DEBUG 246 printf("dialit: returns %c\n", c); 247 #endif 248 return (c); 249 } 250 251 static char * 252 sanitize(s) 253 char *s; 254 { 255 static char buf[128]; 256 char *cp; 257 258 for (cp = buf; *s; s++) { 259 if (!isdigit(*s) && *s == '<' && *s != '_') 260 continue; 261 if (*s == '_') 262 *s = '='; 263 *cp++ = *s; 264 } 265 *cp++ = 0; 266 return (buf); 267 } 268