1 /* $NetBSD: v831.c,v 1.13 2016/06/30 05:56:46 dholland 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. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #ifndef lint 34 #if 0 35 static char sccsid[] = "@(#)v831.c 8.1 (Berkeley) 6/6/93"; 36 #endif 37 __RCSID("$NetBSD: v831.c,v 1.13 2016/06/30 05:56:46 dholland Exp $"); 38 #endif /* not lint */ 39 40 /* 41 * Routines for dialing up on Vadic 831 42 */ 43 #include "tip.h" 44 45 static jmp_buf jmpbuf; 46 static int child = -1; 47 48 static void alarmtr(int); 49 static int dialit(char *, char *); 50 static char *sanitize(char *); 51 52 int 53 v831_dialer(char *num, char *acu) 54 { 55 int status, mypid; 56 int timelim; 57 58 if (boolean(value(VERBOSE))) 59 (void)printf("\nstarting call..."); 60 #ifdef DEBUG 61 (void)printf("(acu=%s)\n", acu); 62 #endif 63 if ((AC = open(acu, O_RDWR)) < 0) { 64 if (errno == EBUSY) 65 (void)printf("line busy..."); 66 else 67 (void)printf("acu open error..."); 68 return (0); 69 } 70 if (setjmp(jmpbuf)) { 71 (void)kill(child, SIGKILL); 72 (void)close(AC); 73 return (0); 74 } 75 (void)signal(SIGALRM, alarmtr); 76 timelim = 5 * strlen(num); 77 (void)alarm((unsigned)(timelim < 30 ? 30 : timelim)); 78 if ((child = fork()) == 0) { 79 /* 80 * ignore this stuff for aborts 81 */ 82 (void)signal(SIGALRM, SIG_IGN); 83 (void)signal(SIGINT, SIG_IGN); 84 (void)signal(SIGQUIT, SIG_IGN); 85 (void)sleep(2); 86 exit(dialit(num, acu) != 'A'); 87 } 88 /* 89 * open line - will return on carrier 90 */ 91 if ((FD = open(DV, O_RDWR)) < 0) { 92 #ifdef DEBUG 93 (void)printf("(after open, errno=%d)\n", errno); 94 #endif 95 if (errno == EIO) 96 (void)printf("lost carrier..."); 97 else 98 (void)printf("dialup line open failed..."); 99 (void)alarm(0); 100 (void)kill(child, SIGKILL); 101 (void)close(AC); 102 return (0); 103 } 104 (void)alarm(0); 105 (void)signal(SIGALRM, SIG_DFL); 106 while ((mypid = wait(&status)) != child && mypid != -1) 107 ; 108 if (status) { 109 (void)close(AC); 110 return (0); 111 } 112 return (1); 113 } 114 115 static void 116 /*ARGSUSED*/ 117 alarmtr(int dummy __unused) 118 { 119 120 (void)alarm(0); 121 longjmp(jmpbuf, 1); 122 } 123 124 /* 125 * Insurance, for some reason we don't seem to be 126 * hanging up... 127 */ 128 void 129 v831_disconnect(void) 130 { 131 struct termios cntrl; 132 133 (void)sleep(2); 134 #ifdef DEBUG 135 (void)printf("[disconnect: FD=%d]\n", FD); 136 #endif 137 if (FD > 0) { 138 (void)ioctl(FD, TIOCCDTR, 0); 139 (void)tcgetattr(FD, &cntrl); 140 (void)cfsetospeed(&cntrl, 0); 141 (void)cfsetispeed(&cntrl, 0); 142 (void)tcsetattr(FD, TCSAFLUSH, &cntrl); 143 (void)ioctl(FD, TIOCNXCL, NULL); 144 } 145 (void)close(FD); 146 } 147 148 void 149 v831_abort(void) 150 { 151 152 #ifdef DEBUG 153 (void)printf("[abort: AC=%d]\n", AC); 154 #endif 155 (void)sleep(2); 156 if (child > 0) 157 (void)kill(child, SIGKILL); 158 if (AC > 0) 159 (void)ioctl(FD, TIOCNXCL, NULL); 160 (void)close(AC); 161 if (FD > 0) 162 (void)ioctl(FD, TIOCCDTR, 0); 163 (void)close(FD); 164 } 165 166 /* 167 * Sigh, this probably must be changed at each site. 168 */ 169 struct vaconfig { 170 const char *vc_name; 171 char vc_rack; 172 char vc_modem; 173 } vaconfig[] = { 174 { "/dev/cua0",'4','0' }, 175 { "/dev/cua1",'4','1' }, 176 { 0, '\0', '\0' } 177 }; 178 179 #define pc(x) (void)(c = x, write(AC,&c,1)) 180 #define ABORT 01 181 #define SI 017 182 #define STX 02 183 #define ETX 03 184 185 static int 186 dialit(char *phonenum, char *acu) 187 { 188 struct vaconfig *vp; 189 struct termios cntrl; 190 char c; 191 int i; 192 193 phonenum = sanitize(phonenum); 194 #ifdef DEBUG 195 (void)printf("(dial phonenum=%s)\n", phonenum); 196 #endif 197 if (*phonenum == '<' && phonenum[1] == 0) 198 return ('Z'); 199 for (vp = vaconfig; vp->vc_name; vp++) 200 if (strcmp(vp->vc_name, acu) == 0) 201 break; 202 if (vp->vc_name == 0) { 203 (void)printf("Unable to locate dialer (%s)\n", acu); 204 return ('K'); 205 } 206 (void)tcgetattr(AC, &cntrl); 207 (void)cfsetospeed(&cntrl, B2400); 208 (void)cfsetispeed(&cntrl, B2400); 209 cntrl.c_cflag |= PARODD | PARENB; 210 cntrl.c_lflag &= ~(ISIG | ICANON); 211 (void)tcsetattr(AC, TCSANOW, &cntrl); 212 (void)tcflush(AC, TCIOFLUSH); 213 pc(STX); 214 pc(vp->vc_rack); 215 pc(vp->vc_modem); 216 while (*phonenum && *phonenum != '<') 217 pc(*phonenum++); 218 pc(SI); 219 pc(ETX); 220 (void)sleep(1); 221 i = read(AC, &c, 1); 222 #ifdef DEBUG 223 (void)printf("read %d chars, char=%c, errno %d\n", i, c, errno); 224 #endif 225 if (i != 1) 226 c = 'M'; 227 if (c == 'B' || c == 'G') { 228 char cc, oc = c; 229 230 pc(ABORT); 231 (void)read(AC, &cc, 1); 232 #ifdef DEBUG 233 (void)printf("abort response=%c\n", cc); 234 #endif 235 c = oc; 236 v831_disconnect(); 237 } 238 (void)close(AC); 239 #ifdef DEBUG 240 (void)printf("dialit: returns %c\n", c); 241 #endif 242 return (c); 243 } 244 245 static char * 246 sanitize(char *s) 247 { 248 static char buf[128]; 249 char *cp; 250 251 for (cp = buf; *s && buf + sizeof buf - cp > 1; s++) { 252 if (!isdigit((unsigned char)*s) && *s != '<' && *s != '_') 253 continue; 254 if (*s == '_') 255 *s = '='; 256 *cp++ = *s; 257 } 258 *cp++ = 0; 259 return (buf); 260 } 261
Indexes created Fri Sep 26 20:09:58 GMT 2025