1 /* $NetBSD: subr.c,v 1.20 1996/09/27 02:15:35 thorpej 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. 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[] = "from: @(#)subr.c 8.1 (Berkeley) 6/4/93"; 39 #else 40 static char rcsid[] = "$NetBSD: subr.c,v 1.20 1996/09/27 02:15:35 thorpej Exp $"; 41 #endif 42 #endif /* not lint */ 43 44 /* 45 * Melbourne getty. 46 */ 47 #define COMPAT_43 48 #include <sys/param.h> 49 #include <stdlib.h> 50 #include <unistd.h> 51 #include <string.h> 52 #include <termios.h> 53 #include <sys/ioctl.h> 54 55 #include "gettytab.h" 56 #include "pathnames.h" 57 #include "extern.h" 58 59 extern struct termios tmode, omode; 60 61 static void compatflags __P((long)); 62 63 /* 64 * Get a table entry. 65 */ 66 void 67 gettable(name, buf) 68 char *name, *buf; 69 { 70 register struct gettystrs *sp; 71 register struct gettynums *np; 72 register struct gettyflags *fp; 73 long n; 74 char *dba[2]; 75 dba[0] = _PATH_GETTYTAB; 76 dba[1] = 0; 77 78 if (cgetent(&buf, dba, name) != 0) 79 return; 80 81 for (sp = gettystrs; sp->field; sp++) 82 cgetstr(buf, sp->field, &sp->value); 83 for (np = gettynums; np->field; np++) { 84 if (cgetnum(buf, np->field, &n) == -1) 85 np->set = 0; 86 else { 87 np->set = 1; 88 np->value = n; 89 } 90 } 91 for (fp = gettyflags; fp->field; fp++) { 92 if (cgetcap(buf, fp->field, ':') == NULL) 93 fp->set = 0; 94 else { 95 fp->set = 1; 96 fp->value = 1 ^ fp->invrt; 97 } 98 } 99 #ifdef DEBUG 100 printf("name=\"%s\", buf=\"%s\"\n", name, buf); 101 for (sp = gettystrs; sp->field; sp++) 102 printf("cgetstr: %s=%s\n", sp->field, sp->value); 103 for (np = gettynums; np->field; np++) 104 printf("cgetnum: %s=%d\n", np->field, np->value); 105 for (fp = gettyflags; fp->field; fp++) 106 printf("cgetflags: %s='%c' set='%c'\n", fp->field, 107 fp->value + '0', fp->set + '0'); 108 exit(1); 109 #endif /* DEBUG */ 110 } 111 112 void 113 gendefaults() 114 { 115 register struct gettystrs *sp; 116 register struct gettynums *np; 117 register struct gettyflags *fp; 118 119 for (sp = gettystrs; sp->field; sp++) 120 if (sp->value) 121 sp->defalt = sp->value; 122 for (np = gettynums; np->field; np++) 123 if (np->set) 124 np->defalt = np->value; 125 for (fp = gettyflags; fp->field; fp++) 126 if (fp->set) 127 fp->defalt = fp->value; 128 else 129 fp->defalt = fp->invrt; 130 } 131 132 void 133 setdefaults() 134 { 135 register struct gettystrs *sp; 136 register struct gettynums *np; 137 register struct gettyflags *fp; 138 139 for (sp = gettystrs; sp->field; sp++) 140 if (!sp->value) 141 sp->value = sp->defalt; 142 for (np = gettynums; np->field; np++) 143 if (!np->set) 144 np->value = np->defalt; 145 for (fp = gettyflags; fp->field; fp++) 146 if (!fp->set) 147 fp->value = fp->defalt; 148 } 149 150 static char ** 151 charnames[] = { 152 &ER, &KL, &IN, &QU, &XN, &XF, &ET, &BK, 153 &SU, &DS, &RP, &FL, &WE, &LN, 0 154 }; 155 156 static char * 157 charvars[] = { 158 &tmode.c_cc[VERASE], &tmode.c_cc[VKILL], &tmode.c_cc[VINTR], 159 &tmode.c_cc[VQUIT], &tmode.c_cc[VSTART], &tmode.c_cc[VSTOP], 160 &tmode.c_cc[VEOF], &tmode.c_cc[VEOL], &tmode.c_cc[VSUSP], 161 &tmode.c_cc[VDSUSP], &tmode.c_cc[VREPRINT], &tmode.c_cc[VDISCARD], 162 &tmode.c_cc[VWERASE], &tmode.c_cc[VLNEXT], 0 163 }; 164 165 void 166 setchars() 167 { 168 register int i; 169 register char *p; 170 171 for (i = 0; charnames[i]; i++) { 172 p = *charnames[i]; 173 if (p && *p) 174 *charvars[i] = *p; 175 else 176 *charvars[i] = _POSIX_VDISABLE; 177 } 178 } 179 180 /* Macros to clear/set/test flags. */ 181 #define SET(t, f) (t) |= (f) 182 #define CLR(t, f) (t) &= ~(f) 183 #define ISSET(t, f) ((t) & (f)) 184 185 void 186 setflags(n) 187 int n; 188 { 189 register tcflag_t iflag, oflag, cflag, lflag; 190 191 #ifdef COMPAT_43 192 switch (n) { 193 case 0: 194 if (F0set) { 195 compatflags(F0); 196 return; 197 } 198 break; 199 case 1: 200 if (F1set) { 201 compatflags(F1); 202 return; 203 } 204 break; 205 default: 206 if (F2set) { 207 compatflags(F2); 208 return; 209 } 210 break; 211 } 212 #endif 213 214 switch (n) { 215 case 0: 216 if (C0set && I0set && L0set && O0set) { 217 tmode.c_cflag = C0; 218 tmode.c_iflag = I0; 219 tmode.c_lflag = L0; 220 tmode.c_oflag = O0; 221 return; 222 } 223 break; 224 case 1: 225 if (C1set && I1set && L1set && O1set) { 226 tmode.c_cflag = C1; 227 tmode.c_iflag = I1; 228 tmode.c_lflag = L1; 229 tmode.c_oflag = O1; 230 return; 231 } 232 break; 233 default: 234 if (C2set && I2set && L2set && O2set) { 235 tmode.c_cflag = C2; 236 tmode.c_iflag = I2; 237 tmode.c_lflag = L2; 238 tmode.c_oflag = O2; 239 return; 240 } 241 break; 242 } 243 244 iflag = omode.c_iflag; 245 oflag = omode.c_oflag; 246 cflag = omode.c_cflag; 247 lflag = omode.c_lflag; 248 249 if (NP) { 250 CLR(cflag, CSIZE|PARENB); 251 SET(cflag, CS8); 252 CLR(iflag, ISTRIP|INPCK|IGNPAR); 253 } else if (AP || EP || OP) { 254 CLR(cflag, CSIZE); 255 SET(cflag, CS7|PARENB); 256 SET(iflag, ISTRIP); 257 if (OP && !EP) { 258 SET(iflag, INPCK|IGNPAR); 259 SET(cflag, PARODD); 260 if (AP) 261 CLR(iflag, INPCK); 262 } else if (EP && !OP) { 263 SET(iflag, INPCK|IGNPAR); 264 CLR(cflag, PARODD); 265 if (AP) 266 CLR(iflag, INPCK); 267 } else if (AP || EP && OP) { 268 CLR(iflag, INPCK|IGNPAR); 269 CLR(cflag, PARODD); 270 } 271 } /* else, leave as is */ 272 273 #if 0 274 if (UC) 275 f |= LCASE; 276 #endif 277 278 if (HC) 279 SET(cflag, HUPCL); 280 else 281 CLR(cflag, HUPCL); 282 283 if (MB) 284 SET(cflag, MDMBUF); 285 else 286 CLR(cflag, MDMBUF); 287 288 if (NL) { 289 SET(iflag, ICRNL); 290 SET(oflag, ONLCR|OPOST); 291 } else { 292 CLR(iflag, ICRNL); 293 CLR(oflag, ONLCR); 294 } 295 296 if (!HT) 297 SET(oflag, OXTABS|OPOST); 298 else 299 CLR(oflag, OXTABS); 300 301 #ifdef XXX_DELAY 302 SET(f, delaybits()); 303 #endif 304 305 if (n == 1) { /* read mode flags */ 306 if (RW) { 307 iflag = 0; 308 CLR(oflag, OPOST); 309 CLR(cflag, CSIZE|PARENB); 310 SET(cflag, CS8); 311 lflag = 0; 312 } else { 313 CLR(lflag, ICANON); 314 } 315 goto out; 316 } 317 318 if (n == 0) 319 goto out; 320 321 #if 0 322 if (CB) 323 SET(f, CRTBS); 324 #endif 325 326 if (CE) 327 SET(lflag, ECHOE); 328 else 329 CLR(lflag, ECHOE); 330 331 if (CK) 332 SET(lflag, ECHOKE); 333 else 334 CLR(lflag, ECHOKE); 335 336 if (PE) 337 SET(lflag, ECHOPRT); 338 else 339 CLR(lflag, ECHOPRT); 340 341 if (EC) 342 SET(lflag, ECHO); 343 else 344 CLR(lflag, ECHO); 345 346 if (XC) 347 SET(lflag, ECHOCTL); 348 else 349 CLR(lflag, ECHOCTL); 350 351 if (DX) 352 SET(lflag, IXANY); 353 else 354 CLR(lflag, IXANY); 355 356 out: 357 tmode.c_iflag = iflag; 358 tmode.c_oflag = oflag; 359 tmode.c_cflag = cflag; 360 tmode.c_lflag = lflag; 361 } 362 363 #ifdef COMPAT_43 364 /* 365 * Old TTY => termios, snatched from <sys/kern/tty_compat.c> 366 */ 367 void 368 compatflags(flags) 369 register long flags; 370 { 371 register tcflag_t iflag, oflag, cflag, lflag; 372 373 iflag = BRKINT|ICRNL|IMAXBEL|IXON|IXANY; 374 oflag = OPOST|ONLCR|OXTABS; 375 cflag = CREAD; 376 lflag = ICANON|ISIG|IEXTEN; 377 378 if (ISSET(flags, TANDEM)) 379 SET(iflag, IXOFF); 380 else 381 CLR(iflag, IXOFF); 382 if (ISSET(flags, ECHO)) 383 SET(lflag, ECHO); 384 else 385 CLR(lflag, ECHO); 386 if (ISSET(flags, CRMOD)) { 387 SET(iflag, ICRNL); 388 SET(oflag, ONLCR); 389 } else { 390 CLR(iflag, ICRNL); 391 CLR(oflag, ONLCR); 392 } 393 if (ISSET(flags, XTABS)) 394 SET(oflag, OXTABS); 395 else 396 CLR(oflag, OXTABS); 397 398 399 if (ISSET(flags, RAW)) { 400 iflag &= IXOFF; 401 CLR(lflag, ISIG|ICANON|IEXTEN); 402 CLR(cflag, PARENB); 403 } else { 404 SET(iflag, BRKINT|IXON|IMAXBEL); 405 SET(lflag, ISIG|IEXTEN); 406 if (ISSET(flags, CBREAK)) 407 CLR(lflag, ICANON); 408 else 409 SET(lflag, ICANON); 410 switch (ISSET(flags, ANYP)) { 411 case 0: 412 CLR(cflag, PARENB); 413 break; 414 case ANYP: 415 SET(cflag, PARENB); 416 CLR(iflag, INPCK); 417 break; 418 case EVENP: 419 SET(cflag, PARENB); 420 SET(iflag, INPCK); 421 CLR(cflag, PARODD); 422 break; 423 case ODDP: 424 SET(cflag, PARENB); 425 SET(iflag, INPCK); 426 SET(cflag, PARODD); 427 break; 428 } 429 } 430 431 /* Nothing we can do with CRTBS. */ 432 if (ISSET(flags, PRTERA)) 433 SET(lflag, ECHOPRT); 434 else 435 CLR(lflag, ECHOPRT); 436 if (ISSET(flags, CRTERA)) 437 SET(lflag, ECHOE); 438 else 439 CLR(lflag, ECHOE); 440 /* Nothing we can do with TILDE. */ 441 if (ISSET(flags, MDMBUF)) 442 SET(cflag, MDMBUF); 443 else 444 CLR(cflag, MDMBUF); 445 if (ISSET(flags, NOHANG)) 446 CLR(cflag, HUPCL); 447 else 448 SET(cflag, HUPCL); 449 if (ISSET(flags, CRTKIL)) 450 SET(lflag, ECHOKE); 451 else 452 CLR(lflag, ECHOKE); 453 if (ISSET(flags, CTLECH)) 454 SET(lflag, ECHOCTL); 455 else 456 CLR(lflag, ECHOCTL); 457 if (!ISSET(flags, DECCTQ)) 458 SET(iflag, IXANY); 459 else 460 CLR(iflag, IXANY); 461 CLR(lflag, TOSTOP|FLUSHO|PENDIN|NOFLSH); 462 SET(lflag, ISSET(flags, TOSTOP|FLUSHO|PENDIN|NOFLSH)); 463 464 if (ISSET(flags, RAW|LITOUT|PASS8)) { 465 CLR(cflag, CSIZE); 466 SET(cflag, CS8); 467 if (!ISSET(flags, RAW|PASS8)) 468 SET(iflag, ISTRIP); 469 else 470 CLR(iflag, ISTRIP); 471 if (!ISSET(flags, RAW|LITOUT)) 472 SET(oflag, OPOST); 473 else 474 CLR(oflag, OPOST); 475 } else { 476 CLR(cflag, CSIZE); 477 SET(cflag, CS7); 478 SET(iflag, ISTRIP); 479 SET(oflag, OPOST); 480 } 481 482 tmode.c_iflag = iflag; 483 tmode.c_oflag = oflag; 484 tmode.c_cflag = cflag; 485 tmode.c_lflag = lflag; 486 } 487 #endif 488 489 #ifdef XXX_DELAY 490 struct delayval { 491 unsigned delay; /* delay in ms */ 492 int bits; 493 }; 494 495 /* 496 * below are random guesses, I can't be bothered checking 497 */ 498 499 struct delayval crdelay[] = { 500 { 1, CR1 }, 501 { 2, CR2 }, 502 { 3, CR3 }, 503 { 83, CR1 }, 504 { 166, CR2 }, 505 { 0, CR3 }, 506 }; 507 508 struct delayval nldelay[] = { 509 { 1, NL1 }, /* special, calculated */ 510 { 2, NL2 }, 511 { 3, NL3 }, 512 { 100, NL2 }, 513 { 0, NL3 }, 514 }; 515 516 struct delayval bsdelay[] = { 517 { 1, BS1 }, 518 { 0, 0 }, 519 }; 520 521 struct delayval ffdelay[] = { 522 { 1, FF1 }, 523 { 1750, FF1 }, 524 { 0, FF1 }, 525 }; 526 527 struct delayval tbdelay[] = { 528 { 1, TAB1 }, 529 { 2, TAB2 }, 530 { 3, XTABS }, /* this is expand tabs */ 531 { 100, TAB1 }, 532 { 0, TAB2 }, 533 }; 534 535 int 536 delaybits() 537 { 538 register int f; 539 540 f = adelay(CD, crdelay); 541 f |= adelay(ND, nldelay); 542 f |= adelay(FD, ffdelay); 543 f |= adelay(TD, tbdelay); 544 f |= adelay(BD, bsdelay); 545 return (f); 546 } 547 548 int 549 adelay(ms, dp) 550 register ms; 551 register struct delayval *dp; 552 { 553 if (ms == 0) 554 return (0); 555 while (dp->delay && ms > dp->delay) 556 dp++; 557 return (dp->bits); 558 } 559 #endif 560 561 char editedhost[MAXHOSTNAMELEN]; 562 563 void 564 edithost(pat) 565 register char *pat; 566 { 567 register char *host = HN; 568 register char *res = editedhost; 569 570 if (!pat) 571 pat = ""; 572 while (*pat) { 573 switch (*pat) { 574 575 case '#': 576 if (*host) 577 host++; 578 break; 579 580 case '@': 581 if (*host) 582 *res++ = *host++; 583 break; 584 585 default: 586 *res++ = *pat; 587 break; 588 589 } 590 if (res == &editedhost[sizeof editedhost - 1]) { 591 *res = '\0'; 592 return; 593 } 594 pat++; 595 } 596 if (*host) 597 strncpy(res, host, sizeof editedhost - (res - editedhost) - 1); 598 else 599 *res = '\0'; 600 editedhost[sizeof editedhost - 1] = '\0'; 601 } 602 603 void 604 makeenv(env) 605 char *env[]; 606 { 607 static char termbuf[128] = "TERM="; 608 register char *p, *q; 609 register char **ep; 610 611 ep = env; 612 if (TT && *TT) { 613 strcat(termbuf, TT); 614 *ep++ = termbuf; 615 } 616 if (p = EV) { 617 q = p; 618 while (q = strchr(q, ',')) { 619 *q++ = '\0'; 620 *ep++ = p; 621 p = q; 622 } 623 if (*p) 624 *ep++ = p; 625 } 626 *ep = (char *)0; 627 } 628 629 /* 630 * This speed select mechanism is written for the Develcon DATASWITCH. 631 * The Develcon sends a string of the form "B{speed}\n" at a predefined 632 * baud rate. This string indicates the user's actual speed. 633 * The routine below returns the terminal type mapped from derived speed. 634 */ 635 struct portselect { 636 char *ps_baud; 637 char *ps_type; 638 } portspeeds[] = { 639 { "B110", "std.110" }, 640 { "B134", "std.134" }, 641 { "B150", "std.150" }, 642 { "B300", "std.300" }, 643 { "B600", "std.600" }, 644 { "B1200", "std.1200" }, 645 { "B2400", "std.2400" }, 646 { "B4800", "std.4800" }, 647 { "B9600", "std.9600" }, 648 { "B19200", "std.19200" }, 649 { 0 } 650 }; 651 652 char * 653 portselector() 654 { 655 char c, baud[20], *type = "default"; 656 register struct portselect *ps; 657 int len; 658 659 alarm(5*60); 660 for (len = 0; len < sizeof (baud) - 1; len++) { 661 if (read(STDIN_FILENO, &c, 1) <= 0) 662 break; 663 c &= 0177; 664 if (c == '\n' || c == '\r') 665 break; 666 if (c == 'B') 667 len = 0; /* in case of leading garbage */ 668 baud[len] = c; 669 } 670 baud[len] = '\0'; 671 for (ps = portspeeds; ps->ps_baud; ps++) 672 if (strcmp(ps->ps_baud, baud) == 0) { 673 type = ps->ps_type; 674 break; 675 } 676 sleep(2); /* wait for connection to complete */ 677 return (type); 678 } 679 680 /* 681 * This auto-baud speed select mechanism is written for the Micom 600 682 * portselector. Selection is done by looking at how the character '\r' 683 * is garbled at the different speeds. 684 */ 685 #include <sys/time.h> 686 687 char * 688 autobaud() 689 { 690 int rfds; 691 struct timeval timeout; 692 char c, *type = "9600-baud"; 693 694 (void)tcflush(0, TCIOFLUSH); 695 rfds = 1 << 0; 696 timeout.tv_sec = 5; 697 timeout.tv_usec = 0; 698 if (select(32, (fd_set *)&rfds, (fd_set *)NULL, 699 (fd_set *)NULL, &timeout) <= 0) 700 return (type); 701 if (read(STDIN_FILENO, &c, sizeof(char)) != sizeof(char)) 702 return (type); 703 timeout.tv_sec = 0; 704 timeout.tv_usec = 20; 705 (void) select(32, (fd_set *)NULL, (fd_set *)NULL, 706 (fd_set *)NULL, &timeout); 707 (void)tcflush(0, TCIOFLUSH); 708 switch (c & 0377) { 709 710 case 0200: /* 300-baud */ 711 type = "300-baud"; 712 break; 713 714 case 0346: /* 1200-baud */ 715 type = "1200-baud"; 716 break; 717 718 case 015: /* 2400-baud */ 719 case 0215: 720 type = "2400-baud"; 721 break; 722 723 default: /* 4800-baud */ 724 type = "4800-baud"; 725 break; 726 727 case 0377: /* 9600-baud */ 728 type = "9600-baud"; 729 break; 730 } 731 return (type); 732 } 733