1 /* $NetBSD: v831.c,v 1.3 1994/12/08 09:31:50 jtc 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 1.3 1994/12/08 09:31:50 jtc Exp $"; 41 #endif /* not lint */ 42 43 /* 44 * Routines for dialing up on Vadic 831 45 */ 46 #include "tip.h" 47 48 int v831_abort(); 49 static void alarmtr(); 50 extern int errno; 51 52 static jmp_buf jmpbuf; 53 static int child = -1; 54 55 v831_dialer(num, acu) 56 char *num, *acu; 57 { 58 int status, pid, connected = 1; 59 register int timelim; 60 static int dialit(); 61 62 if (boolean(value(VERBOSE))) 63 printf("\nstarting call..."); 64 #ifdef DEBUG 65 printf ("(acu=%s)\n", acu); 66 #endif 67 if ((AC = open(acu, O_RDWR)) < 0) { 68 if (errno == EBUSY) 69 printf("line busy..."); 70 else 71 printf("acu open error..."); 72 return (0); 73 } 74 if (setjmp(jmpbuf)) { 75 kill(child, SIGKILL); 76 close(AC); 77 return (0); 78 } 79 signal(SIGALRM, alarmtr); 80 timelim = 5 * strlen(num); 81 alarm(timelim < 30 ? 30 : timelim); 82 if ((child = fork()) == 0) { 83 /* 84 * ignore this stuff for aborts 85 */ 86 signal(SIGALRM, SIG_IGN); 87 signal(SIGINT, SIG_IGN); 88 signal(SIGQUIT, SIG_IGN); 89 sleep(2); 90 exit(dialit(num, acu) != 'A'); 91 } 92 /* 93 * open line - will return on carrier 94 */ 95 if ((FD = open(DV, O_RDWR)) < 0) { 96 #ifdef DEBUG 97 printf("(after open, errno=%d)\n", errno); 98 #endif 99 if (errno == EIO) 100 printf("lost carrier..."); 101 else 102 printf("dialup line open failed..."); 103 alarm(0); 104 kill(child, SIGKILL); 105 close(AC); 106 return (0); 107 } 108 alarm(0); 109 #ifdef notdef 110 ioctl(AC, TIOCHPCL, 0); 111 #endif 112 signal(SIGALRM, SIG_DFL); 113 while ((pid = wait(&status)) != child && pid != -1) 114 ; 115 if (status) { 116 close(AC); 117 return (0); 118 } 119 return (1); 120 } 121 122 static void 123 alarmtr() 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 v831_disconnect() 134 { 135 struct sgttyb 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 ioctl(FD, TIOCGETP, &cntrl); 144 cntrl.sg_ispeed = cntrl.sg_ospeed = 0; 145 ioctl(FD, TIOCSETP, &cntrl); 146 ioctl(FD, TIOCNXCL, (struct sgttyb *)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, (struct sgttyb *)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 sgttyb cntrl; 194 char c; 195 int i, two = 2; 196 static char *sanitize(); 197 198 phonenum = sanitize(phonenum); 199 #ifdef DEBUG 200 printf ("(dial phonenum=%s)\n", phonenum); 201 #endif 202 if (*phonenum == '<' && phonenum[1] == 0) 203 return ('Z'); 204 for (vp = vaconfig; vp->vc_name; vp++) 205 if (strcmp(vp->vc_name, acu) == 0) 206 break; 207 if (vp->vc_name == 0) { 208 printf("Unable to locate dialer (%s)\n", acu); 209 return ('K'); 210 } 211 ioctl(AC, TIOCGETP, &cntrl); 212 cntrl.sg_ispeed = cntrl.sg_ospeed = B2400; 213 cntrl.sg_flags = RAW | EVENP | ODDP; 214 ioctl(AC, TIOCSETP, &cntrl); 215 ioctl(AC, TIOCFLUSH, &two); 216 pc(STX); 217 pc(vp->vc_rack); 218 pc(vp->vc_modem); 219 while (*phonenum && *phonenum != '<') 220 pc(*phonenum++); 221 pc(SI); 222 pc(ETX); 223 sleep(1); 224 i = read(AC, &c, 1); 225 #ifdef DEBUG 226 printf("read %d chars, char=%c, errno %d\n", i, c, errno); 227 #endif 228 if (i != 1) 229 c = 'M'; 230 if (c == 'B' || c == 'G') { 231 char cc, oc = c; 232 233 pc(ABORT); 234 read(AC, &cc, 1); 235 #ifdef DEBUG 236 printf("abort response=%c\n", cc); 237 #endif 238 c = oc; 239 v831_disconnect(); 240 } 241 close(AC); 242 #ifdef DEBUG 243 printf("dialit: returns %c\n", c); 244 #endif 245 return (c); 246 } 247 248 static char * 249 sanitize(s) 250 register char *s; 251 { 252 static char buf[128]; 253 register char *cp; 254 255 for (cp = buf; *s; s++) { 256 if (!isdigit(*s) && *s == '<' && *s != '_') 257 continue; 258 if (*s == '_') 259 *s = '='; 260 *cp++ = *s; 261 } 262 *cp++ = 0; 263 return (buf); 264 } 265