t3000.c revision 1.2
1 /* $NetBSD: t3000.c,v 1.2 1994/12/08 09:31:45 jtc Exp $ */ 2 3 /* 4 * Copyright (c) 1992, 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[] = "@(#)t3000.c 8.1 (Berkeley) 6/6/93"; 39 #endif 40 static char rcsid[] = "$NetBSD: t3000.c,v 1.2 1994/12/08 09:31:45 jtc Exp $"; 41 #endif /* not lint */ 42 43 /* 44 * Routines for calling up on a Telebit T3000 modem. 45 * Derived from Courier driver. 46 */ 47 #include "tip.h" 48 #include <stdio.h> 49 50 #define MAXRETRY 5 51 52 static void sigALRM(); 53 static int timeout = 0; 54 static int connected = 0; 55 static jmp_buf timeoutbuf, intbuf; 56 static int t3000_sync(); 57 58 t3000_dialer(num, acu) 59 register char *num; 60 char *acu; 61 { 62 register char *cp; 63 #ifdef ACULOG 64 char line[80]; 65 #endif 66 static int t3000_connect(), t3000_swallow(); 67 68 if (boolean(value(VERBOSE))) 69 printf("Using \"%s\"\n", acu); 70 71 ioctl(FD, TIOCHPCL, 0); 72 /* 73 * Get in synch. 74 */ 75 if (!t3000_sync()) { 76 badsynch: 77 printf("can't synchronize with t3000\n"); 78 #ifdef ACULOG 79 logent(value(HOST), num, "t3000", "can't synch up"); 80 #endif 81 return (0); 82 } 83 t3000_write(FD, "AT E0\r", 6); /* turn off echoing */ 84 sleep(1); 85 #ifdef DEBUG 86 if (boolean(value(VERBOSE))) 87 t3000_verbose_read(); 88 #endif 89 ioctl(FD, TIOCFLUSH, 0); /* flush any clutter */ 90 t3000_write(FD, "AT E0 H0 Q0 X4 V1\r", 18); 91 if (!t3000_swallow("\r\nOK\r\n")) 92 goto badsynch; 93 fflush(stdout); 94 t3000_write(FD, "AT D", 4); 95 for (cp = num; *cp; cp++) 96 if (*cp == '=') 97 *cp = ','; 98 t3000_write(FD, num, strlen(num)); 99 t3000_write(FD, "\r", 1); 100 connected = t3000_connect(); 101 #ifdef ACULOG 102 if (timeout) { 103 sprintf(line, "%d second dial timeout", 104 number(value(DIALTIMEOUT))); 105 logent(value(HOST), num, "t3000", line); 106 } 107 #endif 108 if (timeout) 109 t3000_disconnect(); 110 return (connected); 111 } 112 113 t3000_disconnect() 114 { 115 /* first hang up the modem*/ 116 ioctl(FD, TIOCCDTR, 0); 117 sleep(1); 118 ioctl(FD, TIOCSDTR, 0); 119 t3000_sync(); /* reset */ 120 close(FD); 121 } 122 123 t3000_abort() 124 { 125 t3000_write(FD, "\r", 1); /* send anything to abort the call */ 126 t3000_disconnect(); 127 } 128 129 static void 130 sigALRM() 131 { 132 printf("\07timeout waiting for reply\n"); 133 timeout = 1; 134 longjmp(timeoutbuf, 1); 135 } 136 137 static int 138 t3000_swallow(match) 139 register char *match; 140 { 141 sig_t f; 142 char c; 143 144 f = signal(SIGALRM, sigALRM); 145 timeout = 0; 146 do { 147 if (*match =='\0') { 148 signal(SIGALRM, f); 149 return (1); 150 } 151 if (setjmp(timeoutbuf)) { 152 signal(SIGALRM, f); 153 return (0); 154 } 155 alarm(number(value(DIALTIMEOUT))); 156 read(FD, &c, 1); 157 alarm(0); 158 c &= 0177; 159 #ifdef DEBUG 160 if (boolean(value(VERBOSE))) 161 putchar(c); 162 #endif 163 } while (c == *match++); 164 #ifdef DEBUG 165 if (boolean(value(VERBOSE))) 166 fflush(stdout); 167 #endif 168 signal(SIGALRM, SIG_DFL); 169 return (0); 170 } 171 172 #ifndef B19200 /* XXX */ 173 #define B19200 EXTA 174 #define B38400 EXTB 175 #endif 176 177 struct tbaud_msg { 178 char *msg; 179 int baud; 180 int baud2; 181 } tbaud_msg[] = { 182 "", B300, 0, 183 " 1200", B1200, 0, 184 " 2400", B2400, 0, 185 " 4800", B4800, 0, 186 " 9600", B9600, 0, 187 " 14400", B19200, B9600, 188 " 19200", B19200, B9600, 189 " 38400", B38400, B9600, 190 " 57600", B38400, B9600, 191 " 7512", B9600, 0, 192 " 1275", B2400, 0, 193 " 7200", B9600, 0, 194 " 12000", B19200, B9600, 195 0, 0, 0, 196 }; 197 198 static int 199 t3000_connect() 200 { 201 char c; 202 int nc, nl, n; 203 struct sgttyb sb; 204 char dialer_buf[64]; 205 struct tbaud_msg *bm; 206 sig_t f; 207 208 if (t3000_swallow("\r\n") == 0) 209 return (0); 210 f = signal(SIGALRM, sigALRM); 211 again: 212 nc = 0; nl = sizeof(dialer_buf)-1; 213 bzero(dialer_buf, sizeof(dialer_buf)); 214 timeout = 0; 215 for (nc = 0, nl = sizeof(dialer_buf)-1 ; nl > 0 ; nc++, nl--) { 216 if (setjmp(timeoutbuf)) 217 break; 218 alarm(number(value(DIALTIMEOUT))); 219 n = read(FD, &c, 1); 220 alarm(0); 221 if (n <= 0) 222 break; 223 c &= 0x7f; 224 if (c == '\r') { 225 if (t3000_swallow("\n") == 0) 226 break; 227 if (!dialer_buf[0]) 228 goto again; 229 if (strcmp(dialer_buf, "RINGING") == 0 && 230 boolean(value(VERBOSE))) { 231 #ifdef DEBUG 232 printf("%s\r\n", dialer_buf); 233 #endif 234 goto again; 235 } 236 if (strncmp(dialer_buf, "CONNECT", 237 sizeof("CONNECT")-1) != 0) 238 break; 239 for (bm = tbaud_msg ; bm->msg ; bm++) 240 if (strcmp(bm->msg, 241 dialer_buf+sizeof("CONNECT")-1) == 0) { 242 if (ioctl(FD, TIOCGETP, &sb) < 0) { 243 perror("TIOCGETP"); 244 goto error; 245 } 246 sb.sg_ispeed = sb.sg_ospeed = bm->baud; 247 if (ioctl(FD, TIOCSETP, &sb) < 0) { 248 if (bm->baud2) { 249 sb.sg_ispeed = 250 sb.sg_ospeed = 251 bm->baud2; 252 if (ioctl(FD, 253 TIOCSETP, 254 &sb) >= 0) 255 goto isok; 256 } 257 perror("TIOCSETP"); 258 goto error; 259 } 260 isok: 261 signal(SIGALRM, f); 262 #ifdef DEBUG 263 if (boolean(value(VERBOSE))) 264 printf("%s\r\n", dialer_buf); 265 #endif 266 return (1); 267 } 268 break; 269 } 270 dialer_buf[nc] = c; 271 #ifdef notdef 272 if (boolean(value(VERBOSE))) 273 putchar(c); 274 #endif 275 } 276 error1: 277 printf("%s\r\n", dialer_buf); 278 error: 279 signal(SIGALRM, f); 280 return (0); 281 } 282 283 /* 284 * This convoluted piece of code attempts to get 285 * the t3000 in sync. 286 */ 287 static int 288 t3000_sync() 289 { 290 int already = 0; 291 int len; 292 char buf[40]; 293 294 while (already++ < MAXRETRY) { 295 ioctl(FD, TIOCFLUSH, 0); /* flush any clutter */ 296 t3000_write(FD, "\rAT Z\r", 6); /* reset modem */ 297 bzero(buf, sizeof(buf)); 298 sleep(2); 299 ioctl(FD, FIONREAD, &len); 300 #if 1 301 if (len == 0) len = 1; 302 #endif 303 if (len) { 304 len = read(FD, buf, sizeof(buf)); 305 #ifdef DEBUG 306 buf[len] = '\0'; 307 printf("t3000_sync: (\"%s\")\n\r", buf); 308 #endif 309 if (index(buf, '0') || 310 (index(buf, 'O') && index(buf, 'K'))) 311 return(1); 312 } 313 /* 314 * If not strapped for DTR control, 315 * try to get command mode. 316 */ 317 sleep(1); 318 t3000_write(FD, "+++", 3); 319 sleep(1); 320 /* 321 * Toggle DTR to force anyone off that might have left 322 * the modem connected. 323 */ 324 ioctl(FD, TIOCCDTR, 0); 325 sleep(1); 326 ioctl(FD, TIOCSDTR, 0); 327 } 328 t3000_write(FD, "\rAT Z\r", 6); 329 return (0); 330 } 331 332 t3000_write(fd, cp, n) 333 int fd; 334 char *cp; 335 int n; 336 { 337 struct sgttyb sb; 338 339 #ifdef notdef 340 if (boolean(value(VERBOSE))) 341 write(1, cp, n); 342 #endif 343 ioctl(fd, TIOCGETP, &sb); 344 ioctl(fd, TIOCSETP, &sb); 345 t3000_nap(); 346 for ( ; n-- ; cp++) { 347 write(fd, cp, 1); 348 ioctl(fd, TIOCGETP, &sb); 349 ioctl(fd, TIOCSETP, &sb); 350 t3000_nap(); 351 } 352 } 353 354 #ifdef DEBUG 355 t3000_verbose_read() 356 { 357 int n = 0; 358 char buf[BUFSIZ]; 359 360 if (ioctl(FD, FIONREAD, &n) < 0) 361 return; 362 if (n <= 0) 363 return; 364 if (read(FD, buf, n) != n) 365 return; 366 write(1, buf, n); 367 } 368 #endif 369 370 /* 371 * Code stolen from /usr/src/lib/libc/gen/sleep.c 372 */ 373 #define mask(s) (1<<((s)-1)) 374 #define setvec(vec, a) \ 375 vec.sv_handler = a; vec.sv_mask = vec.sv_onstack = 0 376 377 static napms = 50; /* Give the t3000 50 milliseconds between characters */ 378 379 static int ringring; 380 381 t3000_nap() 382 { 383 384 static void t3000_napx(); 385 int omask; 386 struct itimerval itv, oitv; 387 register struct itimerval *itp = &itv; 388 struct sigvec vec, ovec; 389 390 timerclear(&itp->it_interval); 391 timerclear(&itp->it_value); 392 if (setitimer(ITIMER_REAL, itp, &oitv) < 0) 393 return; 394 setvec(ovec, SIG_DFL); 395 omask = sigblock(mask(SIGALRM)); 396 itp->it_value.tv_sec = napms/1000; 397 itp->it_value.tv_usec = ((napms%1000)*1000); 398 setvec(vec, t3000_napx); 399 ringring = 0; 400 (void) sigvec(SIGALRM, &vec, &ovec); 401 (void) setitimer(ITIMER_REAL, itp, (struct itimerval *)0); 402 while (!ringring) 403 sigpause(omask &~ mask(SIGALRM)); 404 (void) sigvec(SIGALRM, &ovec, (struct sigvec *)0); 405 (void) setitimer(ITIMER_REAL, &oitv, (struct itimerval *)0); 406 (void) sigsetmask(omask); 407 } 408 409 static void 410 t3000_napx() 411 { 412 ringring = 1; 413 } 414
Indexes created Wed Sep 24 05:09:52 GMT 2025