1 /* 2 * Copyright (c) 1983, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #ifndef lint 31 #if 0 32 static char sccsid[] = "@(#)from: subr.c 8.1 (Berkeley) 6/4/93"; 33 #endif 34 static const char rcsid[] = 35 "$FreeBSD$"; 36 #endif /* not lint */ 37 38 /* 39 * Melbourne getty. 40 */ 41 #include <sys/ioctl.h> 42 #include <sys/param.h> 43 #include <sys/time.h> 44 45 #include <poll.h> 46 #include <stdlib.h> 47 #include <string.h> 48 #include <syslog.h> 49 #include <termios.h> 50 #include <unistd.h> 51 52 #include "gettytab.h" 53 #include "pathnames.h" 54 #include "extern.h" 55 56 57 58 /* 59 * Get a table entry. 60 */ 61 void 62 gettable(const char *name, char *buf) 63 { 64 struct gettystrs *sp; 65 struct gettynums *np; 66 struct gettyflags *fp; 67 long n; 68 int l; 69 char *p; 70 char *msg = NULL; 71 const char *dba[2]; 72 73 static int firsttime = 1; 74 75 dba[0] = _PATH_GETTYTAB; 76 dba[1] = NULL; 77 78 if (firsttime) { 79 /* 80 * we need to strdup() anything in the strings array 81 * initially in order to simplify things later 82 */ 83 for (sp = gettystrs; sp->field; sp++) 84 if (sp->value != NULL) { 85 /* handle these ones more carefully */ 86 if (sp >= &gettystrs[4] && sp <= &gettystrs[6]) 87 l = 2; 88 else 89 l = strlen(sp->value) + 1; 90 if ((p = malloc(l)) != NULL) { 91 strncpy(p, sp->value, l); 92 p[l-1] = '\0'; 93 } 94 /* 95 * replace, even if NULL, else we'll 96 * have problems with free()ing static mem 97 */ 98 sp->value = p; 99 } 100 firsttime = 0; 101 } 102 103 switch (cgetent(&buf, (char **)dba, (char *)name)) { 104 case 1: 105 msg = "%s: couldn't resolve 'tc=' in gettytab '%s'"; 106 case 0: 107 break; 108 case -1: 109 msg = "%s: unknown gettytab entry '%s'"; 110 break; 111 case -2: 112 msg = "%s: retrieving gettytab entry '%s': %m"; 113 break; 114 case -3: 115 msg = "%s: recursive 'tc=' reference gettytab entry '%s'"; 116 break; 117 default: 118 msg = "%s: unexpected cgetent() error for entry '%s'"; 119 break; 120 } 121 122 if (msg != NULL) { 123 syslog(LOG_ERR, msg, "getty", name); 124 return; 125 } 126 127 for (sp = gettystrs; sp->field; sp++) { 128 if ((l = cgetstr(buf, (char*)sp->field, &p)) >= 0) { 129 if (sp->value) { 130 /* prefer existing value */ 131 if (strcmp(p, sp->value) != 0) 132 free(sp->value); 133 else { 134 free(p); 135 p = sp->value; 136 } 137 } 138 sp->value = p; 139 } else if (l == -1) { 140 free(sp->value); 141 sp->value = NULL; 142 } 143 } 144 145 for (np = gettynums; np->field; np++) { 146 if (cgetnum(buf, (char*)np->field, &n) == -1) 147 np->set = 0; 148 else { 149 np->set = 1; 150 np->value = n; 151 } 152 } 153 154 for (fp = gettyflags; fp->field; fp++) { 155 if (cgetcap(buf, (char *)fp->field, ':') == NULL) 156 fp->set = 0; 157 else { 158 fp->set = 1; 159 fp->value = 1 ^ fp->invrt; 160 } 161 } 162 } 163 164 void 165 gendefaults(void) 166 { 167 struct gettystrs *sp; 168 struct gettynums *np; 169 struct gettyflags *fp; 170 171 for (sp = gettystrs; sp->field; sp++) 172 if (sp->value) 173 sp->defalt = strdup(sp->value); 174 for (np = gettynums; np->field; np++) 175 if (np->set) 176 np->defalt = np->value; 177 for (fp = gettyflags; fp->field; fp++) 178 if (fp->set) 179 fp->defalt = fp->value; 180 else 181 fp->defalt = fp->invrt; 182 } 183 184 void 185 setdefaults(void) 186 { 187 struct gettystrs *sp; 188 struct gettynums *np; 189 struct gettyflags *fp; 190 191 for (sp = gettystrs; sp->field; sp++) 192 if (!sp->value) 193 sp->value = !sp->defalt ? sp->defalt 194 : strdup(sp->defalt); 195 for (np = gettynums; np->field; np++) 196 if (!np->set) 197 np->value = np->defalt; 198 for (fp = gettyflags; fp->field; fp++) 199 if (!fp->set) 200 fp->value = fp->defalt; 201 } 202 203 static char ** 204 charnames[] = { 205 &ER, &KL, &IN, &QU, &XN, &XF, &ET, &BK, 206 &SU, &DS, &RP, &FL, &WE, &LN, 0 207 }; 208 209 static char * 210 charvars[] = { 211 &tmode.c_cc[VERASE], &tmode.c_cc[VKILL], &tmode.c_cc[VINTR], 212 &tmode.c_cc[VQUIT], &tmode.c_cc[VSTART], &tmode.c_cc[VSTOP], 213 &tmode.c_cc[VEOF], &tmode.c_cc[VEOL], &tmode.c_cc[VSUSP], 214 &tmode.c_cc[VDSUSP], &tmode.c_cc[VREPRINT], &tmode.c_cc[VDISCARD], 215 &tmode.c_cc[VWERASE], &tmode.c_cc[VLNEXT], 0 216 }; 217 218 void 219 setchars(void) 220 { 221 int i; 222 const char *p; 223 224 for (i = 0; charnames[i]; i++) { 225 p = *charnames[i]; 226 if (p && *p) 227 *charvars[i] = *p; 228 else 229 *charvars[i] = _POSIX_VDISABLE; 230 } 231 } 232 233 /* Macros to clear/set/test flags. */ 234 #define SET(t, f) (t) |= (f) 235 #define CLR(t, f) (t) &= ~(f) 236 #define ISSET(t, f) ((t) & (f)) 237 238 void 239 set_flags(int n) 240 { 241 tcflag_t iflag, oflag, cflag, lflag; 242 243 244 switch (n) { 245 case 0: 246 if (C0set && I0set && L0set && O0set) { 247 tmode.c_cflag = C0; 248 tmode.c_iflag = I0; 249 tmode.c_lflag = L0; 250 tmode.c_oflag = O0; 251 return; 252 } 253 break; 254 case 1: 255 if (C1set && I1set && L1set && O1set) { 256 tmode.c_cflag = C1; 257 tmode.c_iflag = I1; 258 tmode.c_lflag = L1; 259 tmode.c_oflag = O1; 260 return; 261 } 262 break; 263 default: 264 if (C2set && I2set && L2set && O2set) { 265 tmode.c_cflag = C2; 266 tmode.c_iflag = I2; 267 tmode.c_lflag = L2; 268 tmode.c_oflag = O2; 269 return; 270 } 271 break; 272 } 273 274 iflag = omode.c_iflag; 275 oflag = omode.c_oflag; 276 cflag = omode.c_cflag; 277 lflag = omode.c_lflag; 278 279 if (NP) { 280 CLR(cflag, CSIZE|PARENB); 281 SET(cflag, CS8); 282 CLR(iflag, ISTRIP|INPCK|IGNPAR); 283 } else if (AP || EP || OP) { 284 CLR(cflag, CSIZE); 285 SET(cflag, CS7|PARENB); 286 SET(iflag, ISTRIP); 287 if (OP && !EP) { 288 SET(iflag, INPCK|IGNPAR); 289 SET(cflag, PARODD); 290 if (AP) 291 CLR(iflag, INPCK); 292 } else if (EP && !OP) { 293 SET(iflag, INPCK|IGNPAR); 294 CLR(cflag, PARODD); 295 if (AP) 296 CLR(iflag, INPCK); 297 } else if (AP || (EP && OP)) { 298 CLR(iflag, INPCK|IGNPAR); 299 CLR(cflag, PARODD); 300 } 301 } /* else, leave as is */ 302 303 #if 0 304 if (UC) 305 f |= LCASE; 306 #endif 307 308 if (HC) 309 SET(cflag, HUPCL); 310 else 311 CLR(cflag, HUPCL); 312 313 if (MB) 314 SET(cflag, MDMBUF); 315 else 316 CLR(cflag, MDMBUF); 317 318 if (HW) 319 SET(cflag, CRTSCTS); 320 else 321 CLR(cflag, CRTSCTS); 322 323 if (NL) { 324 SET(iflag, ICRNL); 325 SET(oflag, ONLCR|OPOST); 326 } else { 327 CLR(iflag, ICRNL); 328 CLR(oflag, ONLCR); 329 } 330 331 if (!HT) 332 SET(oflag, OXTABS|OPOST); 333 else 334 CLR(oflag, OXTABS); 335 336 #ifdef XXX_DELAY 337 SET(f, delaybits()); 338 #endif 339 340 if (n == 1) { /* read mode flags */ 341 if (RW) { 342 iflag = 0; 343 CLR(oflag, OPOST); 344 CLR(cflag, CSIZE|PARENB); 345 SET(cflag, CS8); 346 lflag = 0; 347 } else { 348 CLR(lflag, ICANON); 349 } 350 goto out; 351 } 352 353 if (n == 0) 354 goto out; 355 356 #if 0 357 if (CB) 358 SET(f, CRTBS); 359 #endif 360 361 if (CE) 362 SET(lflag, ECHOE); 363 else 364 CLR(lflag, ECHOE); 365 366 if (CK) 367 SET(lflag, ECHOKE); 368 else 369 CLR(lflag, ECHOKE); 370 371 if (PE) 372 SET(lflag, ECHOPRT); 373 else 374 CLR(lflag, ECHOPRT); 375 376 if (EC) 377 SET(lflag, ECHO); 378 else 379 CLR(lflag, ECHO); 380 381 if (XC) 382 SET(lflag, ECHOCTL); 383 else 384 CLR(lflag, ECHOCTL); 385 386 if (DX) 387 SET(lflag, IXANY); 388 else 389 CLR(lflag, IXANY); 390 391 out: 392 tmode.c_iflag = iflag; 393 tmode.c_oflag = oflag; 394 tmode.c_cflag = cflag; 395 tmode.c_lflag = lflag; 396 } 397 398 399 #ifdef XXX_DELAY 400 struct delayval { 401 unsigned delay; /* delay in ms */ 402 int bits; 403 }; 404 405 /* 406 * below are random guesses, I can't be bothered checking 407 */ 408 409 struct delayval crdelay[] = { 410 { 1, CR1 }, 411 { 2, CR2 }, 412 { 3, CR3 }, 413 { 83, CR1 }, 414 { 166, CR2 }, 415 { 0, CR3 }, 416 }; 417 418 struct delayval nldelay[] = { 419 { 1, NL1 }, /* special, calculated */ 420 { 2, NL2 }, 421 { 3, NL3 }, 422 { 100, NL2 }, 423 { 0, NL3 }, 424 }; 425 426 struct delayval bsdelay[] = { 427 { 1, BS1 }, 428 { 0, 0 }, 429 }; 430 431 struct delayval ffdelay[] = { 432 { 1, FF1 }, 433 { 1750, FF1 }, 434 { 0, FF1 }, 435 }; 436 437 struct delayval tbdelay[] = { 438 { 1, TAB1 }, 439 { 2, TAB2 }, 440 { 3, XTABS }, /* this is expand tabs */ 441 { 100, TAB1 }, 442 { 0, TAB2 }, 443 }; 444 445 int 446 delaybits(void) 447 { 448 int f; 449 450 f = adelay(CD, crdelay); 451 f |= adelay(ND, nldelay); 452 f |= adelay(FD, ffdelay); 453 f |= adelay(TD, tbdelay); 454 f |= adelay(BD, bsdelay); 455 return (f); 456 } 457 458 int 459 adelay(int ms, struct delayval *dp) 460 { 461 if (ms == 0) 462 return (0); 463 while (dp->delay && ms > dp->delay) 464 dp++; 465 return (dp->bits); 466 } 467 #endif 468 469 char editedhost[MAXHOSTNAMELEN]; 470 471 void 472 edithost(const char *pat) 473 { 474 const char *host = HN; 475 char *res = editedhost; 476 477 if (!pat) 478 pat = ""; 479 while (*pat) { 480 switch (*pat) { 481 482 case '#': 483 if (*host) 484 host++; 485 break; 486 487 case '@': 488 if (*host) 489 *res++ = *host++; 490 break; 491 492 default: 493 *res++ = *pat; 494 break; 495 496 } 497 if (res == &editedhost[sizeof editedhost - 1]) { 498 *res = '\0'; 499 return; 500 } 501 pat++; 502 } 503 if (*host) 504 strncpy(res, host, sizeof editedhost - (res - editedhost) - 1); 505 else 506 *res = '\0'; 507 editedhost[sizeof editedhost - 1] = '\0'; 508 } 509 510 static struct speedtab { 511 int speed; 512 int uxname; 513 } speedtab[] = { 514 { 50, B50 }, 515 { 75, B75 }, 516 { 110, B110 }, 517 { 134, B134 }, 518 { 150, B150 }, 519 { 200, B200 }, 520 { 300, B300 }, 521 { 600, B600 }, 522 { 1200, B1200 }, 523 { 1800, B1800 }, 524 { 2400, B2400 }, 525 { 4800, B4800 }, 526 { 9600, B9600 }, 527 { 19200, EXTA }, 528 { 19, EXTA }, /* for people who say 19.2K */ 529 { 38400, EXTB }, 530 { 38, EXTB }, 531 { 7200, EXTB }, /* alternative */ 532 { 57600, B57600 }, 533 { 115200, B115200 }, 534 { 230400, B230400 }, 535 { 0 } 536 }; 537 538 int 539 speed(int val) 540 { 541 struct speedtab *sp; 542 543 if (val <= B230400) 544 return (val); 545 546 for (sp = speedtab; sp->speed; sp++) 547 if (sp->speed == val) 548 return (sp->uxname); 549 550 return (B300); /* default in impossible cases */ 551 } 552 553 void 554 makeenv(char *env[]) 555 { 556 static char termbuf[128] = "TERM="; 557 char *p, *q; 558 char **ep; 559 560 ep = env; 561 if (TT && *TT) { 562 strlcat(termbuf, TT, sizeof(termbuf)); 563 *ep++ = termbuf; 564 } 565 if ((p = EV)) { 566 q = p; 567 while ((q = strchr(q, ','))) { 568 *q++ = '\0'; 569 *ep++ = p; 570 p = q; 571 } 572 if (*p) 573 *ep++ = p; 574 } 575 *ep = (char *)0; 576 } 577 578 /* 579 * This speed select mechanism is written for the Develcon DATASWITCH. 580 * The Develcon sends a string of the form "B{speed}\n" at a predefined 581 * baud rate. This string indicates the user's actual speed. 582 * The routine below returns the terminal type mapped from derived speed. 583 */ 584 struct portselect { 585 const char *ps_baud; 586 const char *ps_type; 587 } portspeeds[] = { 588 { "B110", "std.110" }, 589 { "B134", "std.134" }, 590 { "B150", "std.150" }, 591 { "B300", "std.300" }, 592 { "B600", "std.600" }, 593 { "B1200", "std.1200" }, 594 { "B2400", "std.2400" }, 595 { "B4800", "std.4800" }, 596 { "B9600", "std.9600" }, 597 { "B19200", "std.19200" }, 598 { NULL, NULL } 599 }; 600 601 const char * 602 portselector(void) 603 { 604 char c, baud[20]; 605 const char *type = "default"; 606 struct portselect *ps; 607 size_t len; 608 609 alarm(5*60); 610 for (len = 0; len < sizeof (baud) - 1; len++) { 611 if (read(STDIN_FILENO, &c, 1) <= 0) 612 break; 613 c &= 0177; 614 if (c == '\n' || c == '\r') 615 break; 616 if (c == 'B') 617 len = 0; /* in case of leading garbage */ 618 baud[len] = c; 619 } 620 baud[len] = '\0'; 621 for (ps = portspeeds; ps->ps_baud; ps++) 622 if (strcmp(ps->ps_baud, baud) == 0) { 623 type = ps->ps_type; 624 break; 625 } 626 sleep(2); /* wait for connection to complete */ 627 return (type); 628 } 629 630 /* 631 * This auto-baud speed select mechanism is written for the Micom 600 632 * portselector. Selection is done by looking at how the character '\r' 633 * is garbled at the different speeds. 634 */ 635 const char * 636 autobaud(void) 637 { 638 struct pollfd set[1]; 639 struct timespec timeout; 640 char c; 641 const char *type = "9600-baud"; 642 643 (void)tcflush(0, TCIOFLUSH); 644 set[0].fd = STDIN_FILENO; 645 set[0].events = POLLIN; 646 if (poll(set, 1, 5000) <= 0) 647 return (type); 648 if (read(STDIN_FILENO, &c, sizeof(char)) != sizeof(char)) 649 return (type); 650 timeout.tv_sec = 0; 651 timeout.tv_nsec = 20000; 652 (void)nanosleep(&timeout, NULL); 653 (void)tcflush(0, TCIOFLUSH); 654 switch (c & 0377) { 655 656 case 0200: /* 300-baud */ 657 type = "300-baud"; 658 break; 659 660 case 0346: /* 1200-baud */ 661 type = "1200-baud"; 662 break; 663 664 case 015: /* 2400-baud */ 665 case 0215: 666 type = "2400-baud"; 667 break; 668 669 default: /* 4800-baud */ 670 type = "4800-baud"; 671 break; 672 673 case 0377: /* 9600-baud */ 674 type = "9600-baud"; 675 break; 676 } 677 return (type); 678 } 679