1 /* $NetBSD: v831.c,v 1.5 1996/12/29 10:42:01 cgd 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 1.5 1996/12/29 10:42:01 cgd 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 static int dialit(); 52 static char *sanitize(); 53 extern int errno; 54 55 static jmp_buf jmpbuf; 56 static int child = -1; 57 58 v831_dialer(num, acu) 59 char *num, *acu; 60 { 61 int status, pid, connected = 1; 62 register int timelim; 63 64 if (boolean(value(VERBOSE))) 65 printf("\nstarting call..."); 66 #ifdef DEBUG 67 printf ("(acu=%s)\n", acu); 68 #endif 69 if ((AC = open(acu, O_RDWR)) < 0) { 70 if (errno == EBUSY) 71 printf("line busy..."); 72 else 73 printf("acu open error..."); 74 return (0); 75 } 76 if (setjmp(jmpbuf)) { 77 kill(child, SIGKILL); 78 close(AC); 79 return (0); 80 } 81 signal(SIGALRM, alarmtr); 82 timelim = 5 * strlen(num); 83 alarm(timelim < 30 ? 30 : timelim); 84 if ((child = fork()) == 0) { 85 /* 86 * ignore this stuff for aborts 87 */ 88 signal(SIGALRM, SIG_IGN); 89 signal(SIGINT, SIG_IGN); 90 signal(SIGQUIT, SIG_IGN); 91 sleep(2); 92 exit(dialit(num, acu) != 'A'); 93 } 94 /* 95 * open line - will return on carrier 96 */ 97 if ((FD = open(DV, O_RDWR)) < 0) { 98 #ifdef DEBUG 99 printf("(after open, errno=%d)\n", errno); 100 #endif 101 if (errno == EIO) 102 printf("lost carrier..."); 103 else 104 printf("dialup line open failed..."); 105 alarm(0); 106 kill(child, SIGKILL); 107 close(AC); 108 return (0); 109 } 110 alarm(0); 111 signal(SIGALRM, SIG_DFL); 112 while ((pid = wait(&status)) != child && pid != -1) 113 ; 114 if (status) { 115 close(AC); 116 return (0); 117 } 118 return (1); 119 } 120 121 static void 122 alarmtr() 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 v831_disconnect() 133 { 134 struct termios cntrl; 135 136 sleep(2); 137 #ifdef DEBUG 138 printf("[disconnect: FD=%d]\n", FD); 139 #endif 140 if (FD > 0) { 141 ioctl(FD, TIOCCDTR, 0); 142 tcgetattr(FD, &cntrl); 143 cfsetospeed(&cntrl, 0); 144 cfsetispeed(&cntrl, 0); 145 tcsetattr(FD, TCSAFLUSH, &cntrl); 146 ioctl(FD, TIOCNXCL, NULL); 147 } 148 close(FD); 149 } 150 151 v831_abort() 152 { 153 154 #ifdef DEBUG 155 printf("[abort: AC=%d]\n", AC); 156 #endif 157 sleep(2); 158 if (child > 0) 159 kill(child, SIGKILL); 160 if (AC > 0) 161 ioctl(FD, TIOCNXCL, NULL); 162 close(AC); 163 if (FD > 0) 164 ioctl(FD, TIOCCDTR, 0); 165 close(FD); 166 } 167 168 /* 169 * Sigh, this probably must be changed at each site. 170 */ 171 struct vaconfig { 172 char *vc_name; 173 char vc_rack; 174 char vc_modem; 175 } vaconfig[] = { 176 { "/dev/cua0",'4','0' }, 177 { "/dev/cua1",'4','1' }, 178 { 0 } 179 }; 180 181 #define pc(x) (c = x, write(AC,&c,1)) 182 #define ABORT 01 183 #define SI 017 184 #define STX 02 185 #define ETX 03 186 187 static int 188 dialit(phonenum, acu) 189 register char *phonenum; 190 char *acu; 191 { 192 register struct vaconfig *vp; 193 struct termios cntrl; 194 char c; 195 int i, two = 2; 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