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 #ifdef DEBUG 42 #include <stdio.h> 43 #endif 44 #include <stdlib.h> 45 #include <string.h> 46 #include <termios.h> 47 #include <unistd.h> 48 #include <sys/ioctl.h> 49 #include <sys/param.h> 50 #include <sys/time.h> 51 #include <syslog.h> 52 53 #include "gettytab.h" 54 #include "pathnames.h" 55 #include "extern.h" 56 57 58 59 /* 60 * Get a table entry. 61 */ 62 void 63 gettable(const char *name, char *buf) 64 { 65 struct gettystrs *sp; 66 struct gettynums *np; 67 struct gettyflags *fp; 68 long n; 69 int l; 70 char *p; 71 char *msg = NULL; 72 const char *dba[2]; 73 74 static int firsttime = 1; 75 76 dba[0] = _PATH_GETTYTAB; 77 dba[1] = 0; 78 79 if (firsttime) { 80 /* 81 * we need to strdup() anything in the strings array 82 * initially in order to simplify things later 83 */ 84 for (sp = gettystrs; sp->field; sp++) 85 if (sp->value != NULL) { 86 /* handle these ones more carefully */ 87 if (sp >= &gettystrs[4] && sp <= &gettystrs[6]) 88 l = 2; 89 else 90 l = strlen(sp->value) + 1; 91 if ((p = malloc(l)) != NULL) { 92 strncpy(p, sp->value, l); 93 p[l-1] = '\0'; 94 } 95 /* 96 * replace, even if NULL, else we'll 97 * have problems with free()ing static mem 98 */ 99 sp->value = p; 100 } 101 firsttime = 0; 102 } 103 104 switch (cgetent(&buf, (char **)dba, (char *)name)) { 105 case 1: 106 msg = "%s: couldn't resolve 'tc=' in gettytab '%s'"; 107 case 0: 108 break; 109 case -1: 110 msg = "%s: unknown gettytab entry '%s'"; 111 break; 112 case -2: 113 msg = "%s: retrieving gettytab entry '%s': %m"; 114 break; 115 case -3: 116 msg = "%s: recursive 'tc=' reference gettytab entry '%s'"; 117 break; 118 default: 119 msg = "%s: unexpected cgetent() error for entry '%s'"; 120 break; 121 } 122 123 if (msg != NULL) { 124 syslog(LOG_ERR, msg, "getty", name); 125 return; 126 } 127 128 for (sp = gettystrs; sp->field; sp++) { 129 if ((l = cgetstr(buf, (char*)sp->field, &p)) >= 0) { 130 if (sp->value) { 131 /* prefer existing value */ 132 if (strcmp(p, sp->value) != 0) 133 free(sp->value); 134 else { 135 free(p); 136 p = sp->value; 137 } 138 } 139 sp->value = p; 140 } else if (l == -1) { 141 free(sp->value); 142 sp->value = NULL; 143 } 144 } 145 146 for (np = gettynums; np->field; np++) { 147 if (cgetnum(buf, (char*)np->field, &n) == -1) 148 np->set = 0; 149 else { 150 np->set = 1; 151 np->value = n; 152 } 153 } 154 155 for (fp = gettyflags; fp->field; fp++) { 156 if (cgetcap(buf, (char *)fp->field, ':') == NULL) 157 fp->set = 0; 158 else { 159 fp->set = 1; 160 fp->value = 1 ^ fp->invrt; 161 } 162 } 163 164 #ifdef DEBUG 165 printf("name=\"%s\", buf=\"%s\"\r\n", name, buf); 166 for (sp = gettystrs; sp->field; sp++) 167 printf("cgetstr: %s=%s\r\n", sp->field, sp->value); 168 for (np = gettynums; np->field; np++) 169 printf("cgetnum: %s=%d\r\n", np->field, np->value); 170 for (fp = gettyflags; fp->field; fp++) 171 printf("cgetflags: %s='%c' set='%c'\r\n", fp->field, 172 fp->value + '0', fp->set + '0'); 173 #endif /* DEBUG */ 174 } 175 176 void 177 gendefaults(void) 178 { 179 struct gettystrs *sp; 180 struct gettynums *np; 181 struct gettyflags *fp; 182 183 for (sp = gettystrs; sp->field; sp++) 184 if (sp->value) 185 sp->defalt = strdup(sp->value); 186 for (np = gettynums; np->field; np++) 187 if (np->set) 188 np->defalt = np->value; 189 for (fp = gettyflags; fp->field; fp++) 190 if (fp->set) 191 fp->defalt = fp->value; 192 else 193 fp->defalt = fp->invrt; 194 } 195 196 void 197 setdefaults(void) 198 { 199 struct gettystrs *sp; 200 struct gettynums *np; 201 struct gettyflags *fp; 202 203 for (sp = gettystrs; sp->field; sp++) 204 if (!sp->value) 205 sp->value = !sp->defalt ? sp->defalt 206 : strdup(sp->defalt); 207 for (np = gettynums; np->field; np++) 208 if (!np->set) 209 np->value = np->defalt; 210 for (fp = gettyflags; fp->field; fp++) 211 if (!fp->set) 212 fp->value = fp->defalt; 213 } 214 215 static char ** 216 charnames[] = { 217 &ER, &KL, &IN, &QU, &XN, &XF, &ET, &BK, 218 &SU, &DS, &RP, &FL, &WE, &LN, 0 219 }; 220 221 static char * 222 charvars[] = { 223 &tmode.c_cc[VERASE], &tmode.c_cc[VKILL], &tmode.c_cc[VINTR], 224 &tmode.c_cc[VQUIT], &tmode.c_cc[VSTART], &tmode.c_cc[VSTOP], 225 &tmode.c_cc[VEOF], &tmode.c_cc[VEOL], &tmode.c_cc[VSUSP], 226 &tmode.c_cc[VDSUSP], &tmode.c_cc[VREPRINT], &tmode.c_cc[VDISCARD], 227 &tmode.c_cc[VWERASE], &tmode.c_cc[VLNEXT], 0 228 }; 229 230 void 231 setchars(void) 232 { 233 int i; 234 const char *p; 235 236 for (i = 0; charnames[i]; i++) { 237 p = *charnames[i]; 238 if (p && *p) 239 *charvars[i] = *p; 240 else 241 *charvars[i] = _POSIX_VDISABLE; 242 } 243 } 244 245 /* Macros to clear/set/test flags. */ 246 #define SET(t, f) (t) |= (f) 247 #define CLR(t, f) (t) &= ~(f) 248 #define ISSET(t, f) ((t) & (f)) 249 250 void 251 set_flags(int n) 252 { 253 tcflag_t iflag, oflag, cflag, lflag; 254 255 256 switch (n) { 257 case 0: 258 if (C0set && I0set && L0set && O0set) { 259 tmode.c_cflag = C0; 260 tmode.c_iflag = I0; 261 tmode.c_lflag = L0; 262 tmode.c_oflag = O0; 263 return; 264 } 265 break; 266 case 1: 267 if (C1set && I1set && L1set && O1set) { 268 tmode.c_cflag = C1; 269 tmode.c_iflag = I1; 270 tmode.c_lflag = L1; 271 tmode.c_oflag = O1; 272 return; 273 } 274 break; 275 default: 276 if (C2set && I2set && L2set && O2set) { 277 tmode.c_cflag = C2; 278 tmode.c_iflag = I2; 279 tmode.c_lflag = L2; 280 tmode.c_oflag = O2; 281 return; 282 } 283 break; 284 } 285 286 iflag = omode.c_iflag; 287 oflag = omode.c_oflag; 288 cflag = omode.c_cflag; 289 lflag = omode.c_lflag; 290 291 if (NP) { 292 CLR(cflag, CSIZE|PARENB); 293 SET(cflag, CS8); 294 CLR(iflag, ISTRIP|INPCK|IGNPAR); 295 } else if (AP || EP || OP) { 296 CLR(cflag, CSIZE); 297 SET(cflag, CS7|PARENB); 298 SET(iflag, ISTRIP); 299 if (OP && !EP) { 300 SET(iflag, INPCK|IGNPAR); 301 SET(cflag, PARODD); 302 if (AP) 303 CLR(iflag, INPCK); 304 } else if (EP && !OP) { 305 SET(iflag, INPCK|IGNPAR); 306 CLR(cflag, PARODD); 307 if (AP) 308 CLR(iflag, INPCK); 309 } else if (AP || (EP && OP)) { 310 CLR(iflag, INPCK|IGNPAR); 311 CLR(cflag, PARODD); 312 } 313 } /* else, leave as is */ 314 315 #if 0 316 if (UC) 317 f |= LCASE; 318 #endif 319 320 if (HC) 321 SET(cflag, HUPCL); 322 else 323 CLR(cflag, HUPCL); 324 325 if (MB) 326 SET(cflag, MDMBUF); 327 else 328 CLR(cflag, MDMBUF); 329 330 if (HW) 331 SET(cflag, CRTSCTS); 332 else 333 CLR(cflag, CRTSCTS); 334 335 if (NL) { 336 SET(iflag, ICRNL); 337 SET(oflag, ONLCR|OPOST); 338 } else { 339 CLR(iflag, ICRNL); 340 CLR(oflag, ONLCR); 341 } 342 343 if (!HT) 344 SET(oflag, OXTABS|OPOST); 345 else 346 CLR(oflag, OXTABS); 347 348 #ifdef XXX_DELAY 349 SET(f, delaybits()); 350 #endif 351 352 if (n == 1) { /* read mode flags */ 353 if (RW) { 354 iflag = 0; 355 CLR(oflag, OPOST); 356 CLR(cflag, CSIZE|PARENB); 357 SET(cflag, CS8); 358 lflag = 0; 359 } else { 360 CLR(lflag, ICANON); 361 } 362 goto out; 363 } 364 365 if (n == 0) 366 goto out; 367 368 #if 0 369 if (CB) 370 SET(f, CRTBS); 371 #endif 372 373 if (CE) 374 SET(lflag, ECHOE); 375 else 376 CLR(lflag, ECHOE); 377 378 if (CK) 379 SET(lflag, ECHOKE); 380 else 381 CLR(lflag, ECHOKE); 382 383 if (PE) 384 SET(lflag, ECHOPRT); 385 else 386 CLR(lflag, ECHOPRT); 387 388 if (EC) 389 SET(lflag, ECHO); 390 else 391 CLR(lflag, ECHO); 392 393 if (XC) 394 SET(lflag, ECHOCTL); 395 else 396 CLR(lflag, ECHOCTL); 397 398 if (DX) 399 SET(lflag, IXANY); 400 else 401 CLR(lflag, IXANY); 402 403 out: 404 tmode.c_iflag = iflag; 405 tmode.c_oflag = oflag; 406 tmode.c_cflag = cflag; 407 tmode.c_lflag = lflag; 408 } 409 410 411 #ifdef XXX_DELAY 412 struct delayval { 413 unsigned delay; /* delay in ms */ 414 int bits; 415 }; 416 417 /* 418 * below are random guesses, I can't be bothered checking 419 */ 420 421 struct delayval crdelay[] = { 422 { 1, CR1 }, 423 { 2, CR2 }, 424 { 3, CR3 }, 425 { 83, CR1 }, 426 { 166, CR2 }, 427 { 0, CR3 }, 428 }; 429 430 struct delayval nldelay[] = { 431 { 1, NL1 }, /* special, calculated */ 432 { 2, NL2 }, 433 { 3, NL3 }, 434 { 100, NL2 }, 435 { 0, NL3 }, 436 }; 437 438 struct delayval bsdelay[] = { 439 { 1, BS1 }, 440 { 0, 0 }, 441 }; 442 443 struct delayval ffdelay[] = { 444 { 1, FF1 }, 445 { 1750, FF1 }, 446 { 0, FF1 }, 447 }; 448 449 struct delayval tbdelay[] = { 450 { 1, TAB1 }, 451 { 2, TAB2 }, 452 { 3, XTABS }, /* this is expand tabs */ 453 { 100, TAB1 }, 454 { 0, TAB2 }, 455 }; 456 457 int 458 delaybits(void) 459 { 460 int f; 461 462 f = adelay(CD, crdelay); 463 f |= adelay(ND, nldelay); 464 f |= adelay(FD, ffdelay); 465 f |= adelay(TD, tbdelay); 466 f |= adelay(BD, bsdelay); 467 return (f); 468 } 469 470 int 471 adelay(int ms, struct delayval *dp) 472 { 473 if (ms == 0) 474 return (0); 475 while (dp->delay && ms > dp->delay) 476 dp++; 477 return (dp->bits); 478 } 479 #endif 480 481 char editedhost[MAXHOSTNAMELEN]; 482 483 void 484 edithost(const char *pat) 485 { 486 const char *host = HN; 487 char *res = editedhost; 488 489 if (!pat) 490 pat = ""; 491 while (*pat) { 492 switch (*pat) { 493 494 case '#': 495 if (*host) 496 host++; 497 break; 498 499 case '@': 500 if (*host) 501 *res++ = *host++; 502 break; 503 504 default: 505 *res++ = *pat; 506 break; 507 508 } 509 if (res == &editedhost[sizeof editedhost - 1]) { 510 *res = '\0'; 511 return; 512 } 513 pat++; 514 } 515 if (*host) 516 strncpy(res, host, sizeof editedhost - (res - editedhost) - 1); 517 else 518 *res = '\0'; 519 editedhost[sizeof editedhost - 1] = '\0'; 520 } 521 522 static struct speedtab { 523 int speed; 524 int uxname; 525 } speedtab[] = { 526 { 50, B50 }, 527 { 75, B75 }, 528 { 110, B110 }, 529 { 134, B134 }, 530 { 150, B150 }, 531 { 200, B200 }, 532 { 300, B300 }, 533 { 600, B600 }, 534 { 1200, B1200 }, 535 { 1800, B1800 }, 536 { 2400, B2400 }, 537 { 4800, B4800 }, 538 { 9600, B9600 }, 539 { 19200, EXTA }, 540 { 19, EXTA }, /* for people who say 19.2K */ 541 { 38400, EXTB }, 542 { 38, EXTB }, 543 { 7200, EXTB }, /* alternative */ 544 { 57600, B57600 }, 545 { 115200, B115200 }, 546 { 230400, B230400 }, 547 { 0 } 548 }; 549 550 int 551 speed(int val) 552 { 553 struct speedtab *sp; 554 555 if (val <= B230400) 556 return (val); 557 558 for (sp = speedtab; sp->speed; sp++) 559 if (sp->speed == val) 560 return (sp->uxname); 561 562 return (B300); /* default in impossible cases */ 563 } 564 565 void 566 makeenv(char *env[]) 567 { 568 static char termbuf[128] = "TERM="; 569 char *p, *q; 570 char **ep; 571 572 ep = env; 573 if (TT && *TT) { 574 strlcat(termbuf, TT, sizeof(termbuf)); 575 *ep++ = termbuf; 576 } 577 if ((p = EV)) { 578 q = p; 579 while ((q = strchr(q, ','))) { 580 *q++ = '\0'; 581 *ep++ = p; 582 p = q; 583 } 584 if (*p) 585 *ep++ = p; 586 } 587 *ep = (char *)0; 588 } 589 590 /* 591 * This speed select mechanism is written for the Develcon DATASWITCH. 592 * The Develcon sends a string of the form "B{speed}\n" at a predefined 593 * baud rate. This string indicates the user's actual speed. 594 * The routine below returns the terminal type mapped from derived speed. 595 */ 596 struct portselect { 597 const char *ps_baud; 598 const char *ps_type; 599 } portspeeds[] = { 600 { "B110", "std.110" }, 601 { "B134", "std.134" }, 602 { "B150", "std.150" }, 603 { "B300", "std.300" }, 604 { "B600", "std.600" }, 605 { "B1200", "std.1200" }, 606 { "B2400", "std.2400" }, 607 { "B4800", "std.4800" }, 608 { "B9600", "std.9600" }, 609 { "B19200", "std.19200" }, 610 { 0 } 611 }; 612 613 const char * 614 portselector(void) 615 { 616 char c, baud[20]; 617 const char *type = "default"; 618 struct portselect *ps; 619 int len; 620 621 alarm(5*60); 622 for (len = 0; len < sizeof (baud) - 1; len++) { 623 if (read(STDIN_FILENO, &c, 1) <= 0) 624 break; 625 c &= 0177; 626 if (c == '\n' || c == '\r') 627 break; 628 if (c == 'B') 629 len = 0; /* in case of leading garbage */ 630 baud[len] = c; 631 } 632 baud[len] = '\0'; 633 for (ps = portspeeds; ps->ps_baud; ps++) 634 if (strcmp(ps->ps_baud, baud) == 0) { 635 type = ps->ps_type; 636 break; 637 } 638 sleep(2); /* wait for connection to complete */ 639 return (type); 640 } 641 642 /* 643 * This auto-baud speed select mechanism is written for the Micom 600 644 * portselector. Selection is done by looking at how the character '\r' 645 * is garbled at the different speeds. 646 */ 647 const char * 648 autobaud(void) 649 { 650 int rfds; 651 struct timeval timeout; 652 char c; 653 const char *type = "9600-baud"; 654 655 (void)tcflush(0, TCIOFLUSH); 656 rfds = 1 << 0; 657 timeout.tv_sec = 5; 658 timeout.tv_usec = 0; 659 if (select(32, (fd_set *)&rfds, (fd_set *)NULL, 660 (fd_set *)NULL, &timeout) <= 0) 661 return (type); 662 if (read(STDIN_FILENO, &c, sizeof(char)) != sizeof(char)) 663 return (type); 664 timeout.tv_sec = 0; 665 timeout.tv_usec = 20; 666 (void) select(32, (fd_set *)NULL, (fd_set *)NULL, 667 (fd_set *)NULL, &timeout); 668 (void)tcflush(0, TCIOFLUSH); 669 switch (c & 0377) { 670 671 case 0200: /* 300-baud */ 672 type = "300-baud"; 673 break; 674 675 case 0346: /* 1200-baud */ 676 type = "1200-baud"; 677 break; 678 679 case 015: /* 2400-baud */ 680 case 0215: 681 type = "2400-baud"; 682 break; 683 684 default: /* 4800-baud */ 685 type = "4800-baud"; 686 break; 687 688 case 0377: /* 9600-baud */ 689 type = "9600-baud"; 690 break; 691 } 692 return (type); 693 } 694