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. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34#ifndef lint 35#if 0 36static char sccsid[] = "@(#)from: subr.c 8.1 (Berkeley) 6/4/93"; 37#endif 38static const char rcsid[] = 39 "$FreeBSD: src/libexec/getty/subr.c,v 1.19 2004/06/25 10:11:28 phk Exp $"; 40#endif /* not lint */ 41 42/* 43 * Melbourne getty. 44 */ 45#ifdef DEBUG 46#include <stdio.h> 47#endif 48#include <stdlib.h> 49#include <string.h> 50#include <termios.h> 51#include <unistd.h> 52#include <sys/ioctl.h> 53#include <sys/param.h> 54#include <sys/time.h> 55#include <syslog.h> 56 57#include "gettytab.h" 58#include "pathnames.h" 59#include "extern.h" 60 61 62 63/* 64 * Get a table entry. 65 */ 66void 67gettable(const char *name) 68{ 69 char *buf = NULL; 70 struct gettystrs *sp; 71 struct gettynums *np; 72 struct gettyflags *fp; 73 long n; 74 int l; 75 char *p; 76 char *msg = NULL; 77 const char *dba[2]; 78 79 static int firsttime = 1; 80 81 dba[0] = _PATH_GETTYTAB; 82 dba[1] = 0; 83 84 if (firsttime) { 85 /* 86 * we need to strdup() anything in the strings array 87 * initially in order to simplify things later 88 */ 89 for (sp = gettystrs; sp->field; sp++) 90 if (sp->value != NULL) { 91 /* handle these ones more carefully */ 92 if (sp >= &gettystrs[4] && sp <= &gettystrs[6]) 93 l = 2; 94 else 95 l = (int)strlen(sp->value) + 1; 96 if ((p = malloc(l)) != NULL) { 97 strncpy(p, sp->value, l); 98 p[l-1] = '\0'; 99 } 100 /* 101 * replace, even if NULL, else we'll 102 * have problems with free()ing static mem 103 */ 104 sp->value = p; 105 } 106 firsttime = 0; 107 } 108 109 switch (cgetent(&buf, (char **)dba, (char *)name)) { 110 case 1: 111 msg = "%s: couldn't resolve 'tc=' in gettytab '%s'"; 112 case 0: 113 break; 114 case -1: 115 msg = "%s: unknown gettytab entry '%s'"; 116 break; 117 case -2: 118 msg = "%s: retrieving gettytab entry '%s': %m"; 119 break; 120 case -3: 121 msg = "%s: recursive 'tc=' reference gettytab entry '%s'"; 122 break; 123 default: 124 msg = "%s: unexpected cgetent() error for entry '%s'"; 125 break; 126 } 127 128 if (msg != NULL) { 129 syslog(LOG_ERR, msg, "getty", name); 130 return; 131 } 132 133 for (sp = gettystrs; sp->field; sp++) { 134 if ((l = cgetstr(buf, (char*)sp->field, &p)) >= 0) { 135 if (sp->value) { 136 /* prefer existing value */ 137 if (strcmp(p, sp->value) != 0) 138 free(sp->value); 139 else { 140 free(p); 141 p = sp->value; 142 } 143 } 144 sp->value = p; 145 } else if (l == -1) { 146 free(sp->value); 147 sp->value = NULL; 148 } 149 } 150 151 for (np = gettynums; np->field; np++) { 152 if (cgetnum(buf, (char*)np->field, &n) == -1) 153 np->set = 0; 154 else { 155 np->set = 1; 156 np->value = n; 157 } 158 } 159 160 for (fp = gettyflags; fp->field; fp++) { 161 if (cgetcap(buf, (char *)fp->field, ':') == NULL) 162 fp->set = 0; 163 else { 164 fp->set = 1; 165 fp->value = 1 ^ fp->invrt; 166 } 167 } 168 169#ifdef DEBUG 170 printf("name=\"%s\", buf=\"%s\"\r\n", name, buf); 171 for (sp = gettystrs; sp->field; sp++) 172 printf("cgetstr: %s=%s\r\n", sp->field, sp->value); 173 for (np = gettynums; np->field; np++) 174 printf("cgetnum: %s=%d\r\n", np->field, np->value); 175 for (fp = gettyflags; fp->field; fp++) 176 printf("cgetflags: %s='%c' set='%c'\r\n", fp->field, 177 fp->value + '0', fp->set + '0'); 178#endif /* DEBUG */ 179 180 free(buf); 181} 182 183void 184gendefaults(void) 185{ 186 struct gettystrs *sp; 187 struct gettynums *np; 188 struct gettyflags *fp; 189 190 for (sp = gettystrs; sp->field; sp++) 191 if (sp->value) 192 sp->defalt = strdup(sp->value); 193 for (np = gettynums; np->field; np++) 194 if (np->set) 195 np->defalt = np->value; 196 for (fp = gettyflags; fp->field; fp++) 197 if (fp->set) 198 fp->defalt = fp->value; 199 else 200 fp->defalt = fp->invrt; 201} 202 203void 204setdefaults(void) 205{ 206 struct gettystrs *sp; 207 struct gettynums *np; 208 struct gettyflags *fp; 209 210 for (sp = gettystrs; sp->field; sp++) 211 if (!sp->value) 212 sp->value = !sp->defalt ? sp->defalt 213 : strdup(sp->defalt); 214 for (np = gettynums; np->field; np++) 215 if (!np->set) 216 np->value = np->defalt; 217 for (fp = gettyflags; fp->field; fp++) 218 if (!fp->set) 219 fp->value = fp->defalt; 220} 221 222static char ** 223charnames[] = { 224 &ER, &KL, &IN, &QU, &XN, &XF, &ET, &BK, 225 &SU, &DS, &RP, &FL, &WE, &LN, 0 226}; 227 228static char * 229charvars[] = { 230 (char*)&tmode.c_cc[VERASE], 231 (char*)&tmode.c_cc[VKILL], 232 (char*)&tmode.c_cc[VINTR], 233 (char*)&tmode.c_cc[VQUIT], 234 (char*)&tmode.c_cc[VSTART], 235 (char*)&tmode.c_cc[VSTOP], 236 (char*)&tmode.c_cc[VEOF], 237 (char*)&tmode.c_cc[VEOL], 238 (char*)&tmode.c_cc[VSUSP], 239 (char*)&tmode.c_cc[VDSUSP], 240 (char*)&tmode.c_cc[VREPRINT], 241 (char*)&tmode.c_cc[VDISCARD], 242 (char*)&tmode.c_cc[VWERASE], 243 (char*)&tmode.c_cc[VLNEXT], 244 0 245}; 246 247void 248setchars(void) 249{ 250 int i; 251 const char *p; 252 253 for (i = 0; charnames[i]; i++) { 254 p = *charnames[i]; 255 if (p && *p) 256 *charvars[i] = *p; 257 else 258 *charvars[i] = _POSIX_VDISABLE; 259 } 260} 261 262/* Macros to clear/set/test flags. */ 263#define SET(t, f) (t) |= (f) 264#define CLR(t, f) (t) &= ~(f) 265#define ISSET(t, f) ((t) & (f)) 266 267void 268set_flags(int n) 269{ 270 tcflag_t iflag, oflag, cflag, lflag; 271 272 273 switch (n) { 274 case 0: 275 if (C0set && I0set && L0set && O0set) { 276 tmode.c_cflag = C0; 277 tmode.c_iflag = I0; 278 tmode.c_lflag = L0; 279 tmode.c_oflag = O0; 280 return; 281 } 282 break; 283 case 1: 284 if (C1set && I1set && L1set && O1set) { 285 tmode.c_cflag = C1; 286 tmode.c_iflag = I1; 287 tmode.c_lflag = L1; 288 tmode.c_oflag = O1; 289 return; 290 } 291 break; 292 default: 293 if (C2set && I2set && L2set && O2set) { 294 tmode.c_cflag = C2; 295 tmode.c_iflag = I2; 296 tmode.c_lflag = L2; 297 tmode.c_oflag = O2; 298 return; 299 } 300 break; 301 } 302 303 iflag = omode.c_iflag; 304 oflag = omode.c_oflag; 305 cflag = omode.c_cflag; 306 lflag = omode.c_lflag; 307 308 if (NP) { 309 CLR(cflag, CSIZE|PARENB); 310 SET(cflag, CS8); 311 CLR(iflag, ISTRIP|INPCK|IGNPAR); 312 } else if (AP || EP || OP) { 313 CLR(cflag, CSIZE); 314 SET(cflag, CS7|PARENB); 315 SET(iflag, ISTRIP); 316 if (OP && !EP) { 317 SET(iflag, INPCK|IGNPAR); 318 SET(cflag, PARODD); 319 if (AP) 320 CLR(iflag, INPCK); 321 } else if (EP && !OP) { 322 SET(iflag, INPCK|IGNPAR); 323 CLR(cflag, PARODD); 324 if (AP) 325 CLR(iflag, INPCK); 326 } else if (AP || (EP && OP)) { 327 CLR(iflag, INPCK|IGNPAR); 328 CLR(cflag, PARODD); 329 } 330 } /* else, leave as is */ 331 332#if 0 333 if (UC) 334 f |= LCASE; 335#endif 336 337 if (HC) 338 SET(cflag, HUPCL); 339 else 340 CLR(cflag, HUPCL); 341 342 if (MB) 343 SET(cflag, MDMBUF); 344 else 345 CLR(cflag, MDMBUF); 346 347 if (HW) 348 SET(cflag, CRTSCTS); 349 else 350 CLR(cflag, CRTSCTS); 351 352 if (NL) { 353 SET(iflag, ICRNL); 354 SET(oflag, ONLCR|OPOST); 355 } else { 356 CLR(iflag, ICRNL); 357 CLR(oflag, ONLCR); 358 } 359 360 if (!HT) 361 SET(oflag, OXTABS|OPOST); 362 else 363 CLR(oflag, OXTABS); 364 365#ifdef XXX_DELAY 366 SET(f, delaybits()); 367#endif 368 369 if (n == 1) { /* read mode flags */ 370 if (RW) { 371 iflag = 0; 372 CLR(oflag, OPOST); 373 CLR(cflag, CSIZE|PARENB); 374 SET(cflag, CS8); 375 lflag = 0; 376 } else { 377 CLR(lflag, ICANON); 378 } 379 goto out; 380 } 381 382 if (n == 0) 383 goto out; 384 385#if 0 386 if (CB) 387 SET(f, CRTBS); 388#endif 389 390 if (CE) 391 SET(lflag, ECHOE); 392 else 393 CLR(lflag, ECHOE); 394 395 if (CK) 396 SET(lflag, ECHOKE); 397 else 398 CLR(lflag, ECHOKE); 399 400 if (PE) 401 SET(lflag, ECHOPRT); 402 else 403 CLR(lflag, ECHOPRT); 404 405 if (EC) 406 SET(lflag, ECHO); 407 else 408 CLR(lflag, ECHO); 409 410 if (XC) 411 SET(lflag, ECHOCTL); 412 else 413 CLR(lflag, ECHOCTL); 414 415 if (DX) 416 SET(lflag, IXANY); 417 else 418 CLR(lflag, IXANY); 419 420out: 421 tmode.c_iflag = iflag; 422 tmode.c_oflag = oflag; 423 tmode.c_cflag = cflag; 424 tmode.c_lflag = lflag; 425} 426 427 428#ifdef XXX_DELAY 429struct delayval { 430 unsigned delay; /* delay in ms */ 431 int bits; 432}; 433 434/* 435 * below are random guesses, I can't be bothered checking 436 */ 437 438struct delayval crdelay[] = { 439 { 1, CR1 }, 440 { 2, CR2 }, 441 { 3, CR3 }, 442 { 83, CR1 }, 443 { 166, CR2 }, 444 { 0, CR3 }, 445}; 446 447struct delayval nldelay[] = { 448 { 1, NL1 }, /* special, calculated */ 449 { 2, NL2 }, 450 { 3, NL3 }, 451 { 100, NL2 }, 452 { 0, NL3 }, 453}; 454 455struct delayval bsdelay[] = { 456 { 1, BS1 }, 457 { 0, 0 }, 458}; 459 460struct delayval ffdelay[] = { 461 { 1, FF1 }, 462 { 1750, FF1 }, 463 { 0, FF1 }, 464}; 465 466struct delayval tbdelay[] = { 467 { 1, TAB1 }, 468 { 2, TAB2 }, 469 { 3, XTABS }, /* this is expand tabs */ 470 { 100, TAB1 }, 471 { 0, TAB2 }, 472}; 473 474int 475delaybits(void) 476{ 477 int f; 478 479 f = adelay(CD, crdelay); 480 f |= adelay(ND, nldelay); 481 f |= adelay(FD, ffdelay); 482 f |= adelay(TD, tbdelay); 483 f |= adelay(BD, bsdelay); 484 return (f); 485} 486 487int 488adelay(int ms, struct delayval *dp) 489{ 490 if (ms == 0) 491 return (0); 492 while (dp->delay && ms > dp->delay) 493 dp++; 494 return (dp->bits); 495} 496#endif 497 498char editedhost[MAXHOSTNAMELEN]; 499 500void 501edithost(const char *pat) 502{ 503 const char *host = HN; 504 char *res = editedhost; 505 506 if (!pat) 507 pat = ""; 508 while (*pat) { 509 switch (*pat) { 510 511 case '#': 512 if (*host) 513 host++; 514 break; 515 516 case '@': 517 if (*host) 518 *res++ = *host++; 519 break; 520 521 default: 522 *res++ = *pat; 523 break; 524 525 } 526 if (res == &editedhost[sizeof editedhost - 1]) { 527 *res = '\0'; 528 return; 529 } 530 pat++; 531 } 532 if (*host) 533 strncpy(res, host, sizeof editedhost - (res - editedhost) - 1); 534 else 535 *res = '\0'; 536 editedhost[sizeof editedhost - 1] = '\0'; 537} 538 539static struct speedtab { 540 int speed; 541 int uxname; 542} speedtab[] = { 543 { 50, B50 }, 544 { 75, B75 }, 545 { 110, B110 }, 546 { 134, B134 }, 547 { 150, B150 }, 548 { 200, B200 }, 549 { 300, B300 }, 550 { 600, B600 }, 551 { 1200, B1200 }, 552 { 1800, B1800 }, 553 { 2400, B2400 }, 554 { 4800, B4800 }, 555 { 9600, B9600 }, 556 { 19200, EXTA }, 557 { 19, EXTA }, /* for people who say 19.2K */ 558 { 38400, EXTB }, 559 { 38, EXTB }, 560 { 7200, EXTB }, /* alternative */ 561 { 57600, B57600 }, 562 { 115200, B115200 }, 563 { 230400, B230400 }, 564 { 0 } 565}; 566 567int 568speed(int val) 569{ 570 struct speedtab *sp; 571 572 if (val <= B230400) 573 return (val); 574 575 for (sp = speedtab; sp->speed; sp++) 576 if (sp->speed == val) 577 return (sp->uxname); 578 579 return (B300); /* default in impossible cases */ 580} 581 582void 583makeenv(char *env[]) 584{ 585 static char termbuf[128] = "TERM="; 586 char *p, *q; 587 char **ep; 588 589 ep = env; 590 if (TT && *TT) { 591 strlcat(termbuf, TT, sizeof(termbuf)); 592 *ep++ = termbuf; 593 } 594 if ((p = EV)) { 595 q = p; 596 while ((q = strchr(q, ','))) { 597 *q++ = '\0'; 598 *ep++ = p; 599 p = q; 600 } 601 if (*p) 602 *ep++ = p; 603 } 604 *ep = (char *)0; 605} 606 607/* 608 * This speed select mechanism is written for the Develcon DATASWITCH. 609 * The Develcon sends a string of the form "B{speed}\n" at a predefined 610 * baud rate. This string indicates the user's actual speed. 611 * The routine below returns the terminal type mapped from derived speed. 612 */ 613struct portselect { 614 const char *ps_baud; 615 const char *ps_type; 616} portspeeds[] = { 617 { "B110", "std.110" }, 618 { "B134", "std.134" }, 619 { "B150", "std.150" }, 620 { "B300", "std.300" }, 621 { "B600", "std.600" }, 622 { "B1200", "std.1200" }, 623 { "B2400", "std.2400" }, 624 { "B4800", "std.4800" }, 625 { "B9600", "std.9600" }, 626 { "B19200", "std.19200" }, 627 { 0 } 628}; 629 630const char * 631portselector(void) 632{ 633 char c, baud[20]; 634 const char *type = "default"; 635 struct portselect *ps; 636 int len; 637 638 alarm(5*60); 639 for (len = 0; len < sizeof (baud) - 1; len++) { 640 if (read(STDIN_FILENO, &c, 1) <= 0) 641 break; 642 c &= 0177; 643 if (c == '\n' || c == '\r') 644 break; 645 if (c == 'B') 646 len = 0; /* in case of leading garbage */ 647 baud[len] = c; 648 } 649 baud[len] = '\0'; 650 for (ps = portspeeds; ps->ps_baud; ps++) 651 if (strcmp(ps->ps_baud, baud) == 0) { 652 type = ps->ps_type; 653 break; 654 } 655 sleep(2); /* wait for connection to complete */ 656 return (type); 657} 658 659/* 660 * This auto-baud speed select mechanism is written for the Micom 600 661 * portselector. Selection is done by looking at how the character '\r' 662 * is garbled at the different speeds. 663 */ 664const char * 665autobaud(void) 666{ 667 int rfds; 668 struct timeval timeout; 669 char c; 670 const char *type = "9600-baud"; 671 672 (void)tcflush(0, TCIOFLUSH); 673 rfds = 1 << 0; 674 timeout.tv_sec = 5; 675 timeout.tv_usec = 0; 676 if (select(32, (fd_set *)&rfds, (fd_set *)NULL, 677 (fd_set *)NULL, &timeout) <= 0) 678 return (type); 679 if (read(STDIN_FILENO, &c, sizeof(char)) != sizeof(char)) 680 return (type); 681 timeout.tv_sec = 0; 682 timeout.tv_usec = 20; 683 (void) select(32, (fd_set *)NULL, (fd_set *)NULL, 684 (fd_set *)NULL, &timeout); 685 (void)tcflush(0, TCIOFLUSH); 686 switch (c & 0377) { 687 688 case 0200: /* 300-baud */ 689 type = "300-baud"; 690 break; 691 692 case 0346: /* 1200-baud */ 693 type = "1200-baud"; 694 break; 695 696 case 015: /* 2400-baud */ 697 case 0215: 698 type = "2400-baud"; 699 break; 700 701 default: /* 4800-baud */ 702 type = "4800-baud"; 703 break; 704 705 case 0377: /* 9600-baud */ 706 type = "9600-baud"; 707 break; 708 } 709 return (type); 710} 711