1 /* $NetBSD: v831.c,v 1.4 1995/10/29 00:50:02 pk 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 #ifndef lint 37 #if 0 38 static char sccsid[] = "@(#)v831.c 8.1 (Berkeley) 6/6/93"; 39 #endif 40 static char rcsid[] = "$NetBSD: v831.c,v 1.4 1995/10/29 00:50:02 pk Exp $"; 41 #endif /* not lint */ 42 43 /* 44 * Routines for dialing up on Vadic 831 45 */ 46 #include "tip.h" 47 #include <termios.h> 48 49 int v831_abort(); 50 static void alarmtr(); 51 extern int errno; 52 53 static jmp_buf jmpbuf; 54 static int child = -1; 55 56 v831_dialer(num, acu) 57 char *num, *acu; 58 { 59 int status, pid, connected = 1; 60 register int timelim; 61 static int dialit(); 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() 122 { 123 alarm(0); 124 longjmp(jmpbuf, 1); 125 } 126 127 /* 128 * Insurance, for some reason we don't seem to be 129 * hanging up... 130 */ 131 v831_disconnect() 132 { 133 struct termios cntrl; 134 135 sleep(2); 136 #ifdef DEBUG 137 printf("[disconnect: FD=%d]\n", FD); 138 #endif 139 if (FD > 0) { 140 ioctl(FD, TIOCCDTR, 0); 141 tcgetattr(FD, &cntrl); 142 cfsetospeed(&cntrl, 0); 143 cfsetispeed(&cntrl, 0); 144 tcsetattr(FD, TCSAFLUSH, &cntrl); 145 ioctl(FD, TIOCNXCL, NULL); 146 } 147 close(FD); 148 } 149 150 v831_abort() 151 { 152 153 #ifdef DEBUG 154 printf("[abort: AC=%d]\n", AC); 155 #endif 156 sleep(2); 157 if (child > 0) 158 kill(child, SIGKILL); 159 if (AC > 0) 160 ioctl(FD, TIOCNXCL, NULL); 161 close(AC); 162 if (FD > 0) 163 ioctl(FD, TIOCCDTR, 0); 164 close(FD); 165 } 166 167 /* 168 * Sigh, this probably must be changed at each site. 169 */ 170 struct vaconfig { 171 char *vc_name; 172 char vc_rack; 173 char vc_modem; 174 } vaconfig[] = { 175 { "/dev/cua0",'4','0' }, 176 { "/dev/cua1",'4','1' }, 177 { 0 } 178 }; 179 180 #define pc(x) (c = x, write(AC,&c,1)) 181 #define ABORT 01 182 #define SI 017 183 #define STX 02 184 #define ETX 03 185 186 static int 187 dialit(phonenum, acu) 188 register char *phonenum; 189 char *acu; 190 { 191 register struct vaconfig *vp; 192 struct termios cntrl; 193 char c; 194 int i, two = 2; 195 static char *sanitize(); 196 197 phonenum = sanitize(phonenum); 198 #ifdef DEBUG 199 printf ("(dial phonenum=%s)\n", phonenum); 200 #endif 201 if (*phonenum == '<' && phonenum[1] == 0) 202 return ('Z'); 203 for (vp = vaconfig; vp->vc_name; vp++) 204 if (strcmp(vp->vc_name, acu) == 0) 205 break; 206 if (vp->vc_name == 0) { 207 printf("Unable to locate dialer (%s)\n", acu); 208 return ('K'); 209 } 210 tcgetattr(AC, &cntrl); 211 cfsetospeed(&cntrl, B2400); 212 cfsetispeed(&cntrl, B2400); 213 cntrl.c_cflag |= PARODD | PARENB; 214 cntrl.c_lflag &= ~(ISIG | ICANON); 215 tcsetattr(AC, TCSANOW, &cntrl); 216 tcflush(AC, TCIOFLUSH); 217 pc(STX); 218 pc(vp->vc_rack); 219 pc(vp->vc_modem); 220 while (*phonenum && *phonenum != '<') 221 pc(*phonenum++); 222 pc(SI); 223 pc(ETX); 224 sleep(1); 225 i = read(AC, &c, 1); 226 #ifdef DEBUG 227 printf("read %d chars, char=%c, errno %d\n", i, c, errno); 228 #endif 229 if (i != 1) 230 c = 'M'; 231 if (c == 'B' || c == 'G') { 232 char cc, oc = c; 233 234 pc(ABORT); 235 read(AC, &cc, 1); 236 #ifdef DEBUG 237 printf("abort response=%c\n", cc); 238 #endif 239 c = oc; 240 v831_disconnect(); 241 } 242 close(AC); 243 #ifdef DEBUG 244 printf("dialit: returns %c\n", c); 245 #endif 246 return (c); 247 } 248 249 static char * 250 sanitize(s) 251 register char *s; 252 { 253 static char buf[128]; 254 register char *cp; 255 256 for (cp = buf; *s; s++) { 257 if (!isdigit(*s) && *s == '<' && *s != '_') 258 continue; 259 if (*s == '_') 260 *s = '='; 261 *cp++ = *s; 262 } 263 *cp++ = 0; 264 return (buf); 265 } 266