| 1 | /* |
| 2 | * Copyright (c) 1983, 1993 |
| 3 | * The Regents of the University of California. All rights reserved. |
| 4 | * |
| 5 | * %sccs.include.redist.c% |
| 6 | */ |
| 7 | |
| 8 | #ifndef lint |
| 9 | static char sccsid[] = "@(#)subr.c 8.1 (Berkeley) %G%"; |
| 10 | #endif /* not lint */ |
| 11 | |
| 12 | /* |
| 13 | * Melbourne getty. |
| 14 | */ |
| 15 | #define USE_OLD_TTY |
| 16 | #include <stdlib.h> |
| 17 | #include <sgtty.h> |
| 18 | #include <string.h> |
| 19 | #include <unistd.h> |
| 20 | |
| 21 | #include "gettytab.h" |
| 22 | #include "extern.h" |
| 23 | #include "pathnames.h" |
| 24 | |
| 25 | extern struct sgttyb tmode; |
| 26 | extern struct tchars tc; |
| 27 | extern struct ltchars ltc; |
| 28 | |
| 29 | /* |
| 30 | * Get a table entry. |
| 31 | */ |
| 32 | void |
| 33 | gettable(name, buf) |
| 34 | char *name, *buf; |
| 35 | { |
| 36 | register struct gettystrs *sp; |
| 37 | register struct gettynums *np; |
| 38 | register struct gettyflags *fp; |
| 39 | long n; |
| 40 | char *dba[2]; |
| 41 | dba[0] = _PATH_GETTYTAB; |
| 42 | dba[1] = 0; |
| 43 | |
| 44 | if (cgetent(&buf, dba, name) != 0) |
| 45 | return; |
| 46 | |
| 47 | for (sp = gettystrs; sp->field; sp++) |
| 48 | cgetstr(buf, sp->field, &sp->value); |
| 49 | for (np = gettynums; np->field; np++) { |
| 50 | if (cgetnum(buf, np->field, &n) == -1) |
| 51 | np->set = 0; |
| 52 | else { |
| 53 | np->set = 1; |
| 54 | np->value = n; |
| 55 | } |
| 56 | } |
| 57 | for (fp = gettyflags; fp->field; fp++) { |
| 58 | if (cgetcap(buf, fp->field, ':') == NULL) |
| 59 | fp->set = 0; |
| 60 | else { |
| 61 | fp->set = 1; |
| 62 | fp->value = 1 ^ fp->invrt; |
| 63 | } |
| 64 | } |
| 65 | #ifdef DEBUG |
| 66 | printf("name=\"%s\", buf=\"%s\"\n", name, buf); |
| 67 | for (sp = gettystrs; sp->field; sp++) |
| 68 | printf("cgetstr: %s=%s\n", sp->field, sp->value); |
| 69 | for (np = gettynums; np->field; np++) |
| 70 | printf("cgetnum: %s=%d\n", np->field, np->value); |
| 71 | for (fp = gettyflags; fp->field; fp++) |
| 72 | printf("cgetflags: %s='%c' set='%c'\n", fp->field, |
| 73 | fp->value + '0', fp->set + '0'); |
| 74 | exit(1); |
| 75 | #endif /* DEBUG */ |
| 76 | } |
| 77 | |
| 78 | void |
| 79 | gendefaults() |
| 80 | { |
| 81 | register struct gettystrs *sp; |
| 82 | register struct gettynums *np; |
| 83 | register struct gettyflags *fp; |
| 84 | |
| 85 | for (sp = gettystrs; sp->field; sp++) |
| 86 | if (sp->value) |
| 87 | sp->defalt = sp->value; |
| 88 | for (np = gettynums; np->field; np++) |
| 89 | if (np->set) |
| 90 | np->defalt = np->value; |
| 91 | for (fp = gettyflags; fp->field; fp++) |
| 92 | if (fp->set) |
| 93 | fp->defalt = fp->value; |
| 94 | else |
| 95 | fp->defalt = fp->invrt; |
| 96 | } |
| 97 | |
| 98 | void |
| 99 | setdefaults() |
| 100 | { |
| 101 | register struct gettystrs *sp; |
| 102 | register struct gettynums *np; |
| 103 | register struct gettyflags *fp; |
| 104 | |
| 105 | for (sp = gettystrs; sp->field; sp++) |
| 106 | if (!sp->value) |
| 107 | sp->value = sp->defalt; |
| 108 | for (np = gettynums; np->field; np++) |
| 109 | if (!np->set) |
| 110 | np->value = np->defalt; |
| 111 | for (fp = gettyflags; fp->field; fp++) |
| 112 | if (!fp->set) |
| 113 | fp->value = fp->defalt; |
| 114 | } |
| 115 | |
| 116 | static char ** |
| 117 | charnames[] = { |
| 118 | &ER, &KL, &IN, &QU, &XN, &XF, &ET, &BK, |
| 119 | &SU, &DS, &RP, &FL, &WE, &LN, 0 |
| 120 | }; |
| 121 | |
| 122 | static char * |
| 123 | charvars[] = { |
| 124 | &tmode.sg_erase, &tmode.sg_kill, &tc.t_intrc, |
| 125 | &tc.t_quitc, &tc.t_startc, &tc.t_stopc, |
| 126 | &tc.t_eofc, &tc.t_brkc, <c.t_suspc, |
| 127 | <c.t_dsuspc, <c.t_rprntc, <c.t_flushc, |
| 128 | <c.t_werasc, <c.t_lnextc, 0 |
| 129 | }; |
| 130 | |
| 131 | void |
| 132 | setchars() |
| 133 | { |
| 134 | register int i; |
| 135 | register char *p; |
| 136 | |
| 137 | for (i = 0; charnames[i]; i++) { |
| 138 | p = *charnames[i]; |
| 139 | if (p && *p) |
| 140 | *charvars[i] = *p; |
| 141 | else |
| 142 | *charvars[i] = '\377'; |
| 143 | } |
| 144 | } |
| 145 | |
| 146 | long |
| 147 | setflags(n) |
| 148 | int n; |
| 149 | { |
| 150 | register long f; |
| 151 | |
| 152 | switch (n) { |
| 153 | case 0: |
| 154 | if (F0set) |
| 155 | return(F0); |
| 156 | break; |
| 157 | case 1: |
| 158 | if (F1set) |
| 159 | return(F1); |
| 160 | break; |
| 161 | default: |
| 162 | if (F2set) |
| 163 | return(F2); |
| 164 | break; |
| 165 | } |
| 166 | |
| 167 | f = 0; |
| 168 | |
| 169 | if (AP) |
| 170 | f |= ANYP; |
| 171 | else if (OP) |
| 172 | f |= ODDP; |
| 173 | else if (EP) |
| 174 | f |= EVENP; |
| 175 | |
| 176 | if (UC) |
| 177 | f |= LCASE; |
| 178 | |
| 179 | if (NL) |
| 180 | f |= CRMOD; |
| 181 | |
| 182 | f |= delaybits(); |
| 183 | |
| 184 | if (n == 1) { /* read mode flags */ |
| 185 | if (RW) |
| 186 | f |= RAW; |
| 187 | else |
| 188 | f |= CBREAK; |
| 189 | return (f); |
| 190 | } |
| 191 | |
| 192 | if (!HT) |
| 193 | f |= XTABS; |
| 194 | |
| 195 | if (n == 0) |
| 196 | return (f); |
| 197 | |
| 198 | if (CB) |
| 199 | f |= CRTBS; |
| 200 | |
| 201 | if (CE) |
| 202 | f |= CRTERA; |
| 203 | |
| 204 | if (CK) |
| 205 | f |= CRTKIL; |
| 206 | |
| 207 | if (PE) |
| 208 | f |= PRTERA; |
| 209 | |
| 210 | if (EC) |
| 211 | f |= ECHO; |
| 212 | |
| 213 | if (XC) |
| 214 | f |= CTLECH; |
| 215 | |
| 216 | if (DX) |
| 217 | f |= DECCTQ; |
| 218 | |
| 219 | return (f); |
| 220 | } |
| 221 | |
| 222 | struct delayval { |
| 223 | unsigned delay; /* delay in ms */ |
| 224 | int bits; |
| 225 | }; |
| 226 | |
| 227 | /* |
| 228 | * below are random guesses, I can't be bothered checking |
| 229 | */ |
| 230 | |
| 231 | struct delayval crdelay[] = { |
| 232 | { 1, CR1 }, |
| 233 | { 2, CR2 }, |
| 234 | { 3, CR3 }, |
| 235 | { 83, CR1 }, |
| 236 | { 166, CR2 }, |
| 237 | { 0, CR3 }, |
| 238 | }; |
| 239 | |
| 240 | struct delayval nldelay[] = { |
| 241 | { 1, NL1 }, /* special, calculated */ |
| 242 | { 2, NL2 }, |
| 243 | { 3, NL3 }, |
| 244 | { 100, NL2 }, |
| 245 | { 0, NL3 }, |
| 246 | }; |
| 247 | |
| 248 | struct delayval bsdelay[] = { |
| 249 | { 1, BS1 }, |
| 250 | { 0, 0 }, |
| 251 | }; |
| 252 | |
| 253 | struct delayval ffdelay[] = { |
| 254 | { 1, FF1 }, |
| 255 | { 1750, FF1 }, |
| 256 | { 0, FF1 }, |
| 257 | }; |
| 258 | |
| 259 | struct delayval tbdelay[] = { |
| 260 | { 1, TAB1 }, |
| 261 | { 2, TAB2 }, |
| 262 | { 3, XTABS }, /* this is expand tabs */ |
| 263 | { 100, TAB1 }, |
| 264 | { 0, TAB2 }, |
| 265 | }; |
| 266 | |
| 267 | int |
| 268 | delaybits() |
| 269 | { |
| 270 | register int f; |
| 271 | |
| 272 | f = adelay(CD, crdelay); |
| 273 | f |= adelay(ND, nldelay); |
| 274 | f |= adelay(FD, ffdelay); |
| 275 | f |= adelay(TD, tbdelay); |
| 276 | f |= adelay(BD, bsdelay); |
| 277 | return (f); |
| 278 | } |
| 279 | |
| 280 | int |
| 281 | adelay(ms, dp) |
| 282 | register ms; |
| 283 | register struct delayval *dp; |
| 284 | { |
| 285 | if (ms == 0) |
| 286 | return (0); |
| 287 | while (dp->delay && ms > dp->delay) |
| 288 | dp++; |
| 289 | return (dp->bits); |
| 290 | } |
| 291 | |
| 292 | char editedhost[32]; |
| 293 | |
| 294 | void |
| 295 | edithost(pat) |
| 296 | register char *pat; |
| 297 | { |
| 298 | register char *host = HN; |
| 299 | register char *res = editedhost; |
| 300 | |
| 301 | if (!pat) |
| 302 | pat = ""; |
| 303 | while (*pat) { |
| 304 | switch (*pat) { |
| 305 | |
| 306 | case '#': |
| 307 | if (*host) |
| 308 | host++; |
| 309 | break; |
| 310 | |
| 311 | case '@': |
| 312 | if (*host) |
| 313 | *res++ = *host++; |
| 314 | break; |
| 315 | |
| 316 | default: |
| 317 | *res++ = *pat; |
| 318 | break; |
| 319 | |
| 320 | } |
| 321 | if (res == &editedhost[sizeof editedhost - 1]) { |
| 322 | *res = '\0'; |
| 323 | return; |
| 324 | } |
| 325 | pat++; |
| 326 | } |
| 327 | if (*host) |
| 328 | strncpy(res, host, sizeof editedhost - (res - editedhost) - 1); |
| 329 | else |
| 330 | *res = '\0'; |
| 331 | editedhost[sizeof editedhost - 1] = '\0'; |
| 332 | } |
| 333 | |
| 334 | struct speedtab { |
| 335 | int speed; |
| 336 | int uxname; |
| 337 | } speedtab[] = { |
| 338 | { 50, B50 }, |
| 339 | { 75, B75 }, |
| 340 | { 110, B110 }, |
| 341 | { 134, B134 }, |
| 342 | { 150, B150 }, |
| 343 | { 200, B200 }, |
| 344 | { 300, B300 }, |
| 345 | { 600, B600 }, |
| 346 | { 1200, B1200 }, |
| 347 | { 1800, B1800 }, |
| 348 | { 2400, B2400 }, |
| 349 | { 4800, B4800 }, |
| 350 | { 9600, B9600 }, |
| 351 | { 19200, EXTA }, |
| 352 | { 19, EXTA }, /* for people who say 19.2K */ |
| 353 | { 38400, EXTB }, |
| 354 | { 38, EXTB }, |
| 355 | { 7200, EXTB }, /* alternative */ |
| 356 | { 0 } |
| 357 | }; |
| 358 | |
| 359 | int |
| 360 | speed(val) |
| 361 | int val; |
| 362 | { |
| 363 | register struct speedtab *sp; |
| 364 | |
| 365 | if (val <= 15) |
| 366 | return (val); |
| 367 | |
| 368 | for (sp = speedtab; sp->speed; sp++) |
| 369 | if (sp->speed == val) |
| 370 | return (sp->uxname); |
| 371 | |
| 372 | return (B300); /* default in impossible cases */ |
| 373 | } |
| 374 | |
| 375 | void |
| 376 | makeenv(env) |
| 377 | char *env[]; |
| 378 | { |
| 379 | static char termbuf[128] = "TERM="; |
| 380 | register char *p, *q; |
| 381 | register char **ep; |
| 382 | |
| 383 | ep = env; |
| 384 | if (TT && *TT) { |
| 385 | strcat(termbuf, TT); |
| 386 | *ep++ = termbuf; |
| 387 | } |
| 388 | if (p = EV) { |
| 389 | q = p; |
| 390 | while (q = strchr(q, ',')) { |
| 391 | *q++ = '\0'; |
| 392 | *ep++ = p; |
| 393 | p = q; |
| 394 | } |
| 395 | if (*p) |
| 396 | *ep++ = p; |
| 397 | } |
| 398 | *ep = (char *)0; |
| 399 | } |
| 400 | |
| 401 | /* |
| 402 | * This speed select mechanism is written for the Develcon DATASWITCH. |
| 403 | * The Develcon sends a string of the form "B{speed}\n" at a predefined |
| 404 | * baud rate. This string indicates the user's actual speed. |
| 405 | * The routine below returns the terminal type mapped from derived speed. |
| 406 | */ |
| 407 | struct portselect { |
| 408 | char *ps_baud; |
| 409 | char *ps_type; |
| 410 | } portspeeds[] = { |
| 411 | { "B110", "std.110" }, |
| 412 | { "B134", "std.134" }, |
| 413 | { "B150", "std.150" }, |
| 414 | { "B300", "std.300" }, |
| 415 | { "B600", "std.600" }, |
| 416 | { "B1200", "std.1200" }, |
| 417 | { "B2400", "std.2400" }, |
| 418 | { "B4800", "std.4800" }, |
| 419 | { "B9600", "std.9600" }, |
| 420 | { "B19200", "std.19200" }, |
| 421 | { 0 } |
| 422 | }; |
| 423 | |
| 424 | char * |
| 425 | portselector() |
| 426 | { |
| 427 | char c, baud[20], *type = "default"; |
| 428 | register struct portselect *ps; |
| 429 | int len; |
| 430 | |
| 431 | alarm(5*60); |
| 432 | for (len = 0; len < sizeof (baud) - 1; len++) { |
| 433 | if (read(STDIN_FILENO, &c, 1) <= 0) |
| 434 | break; |
| 435 | c &= 0177; |
| 436 | if (c == '\n' || c == '\r') |
| 437 | break; |
| 438 | if (c == 'B') |
| 439 | len = 0; /* in case of leading garbage */ |
| 440 | baud[len] = c; |
| 441 | } |
| 442 | baud[len] = '\0'; |
| 443 | for (ps = portspeeds; ps->ps_baud; ps++) |
| 444 | if (strcmp(ps->ps_baud, baud) == 0) { |
| 445 | type = ps->ps_type; |
| 446 | break; |
| 447 | } |
| 448 | sleep(2); /* wait for connection to complete */ |
| 449 | return (type); |
| 450 | } |
| 451 | |
| 452 | /* |
| 453 | * This auto-baud speed select mechanism is written for the Micom 600 |
| 454 | * portselector. Selection is done by looking at how the character '\r' |
| 455 | * is garbled at the different speeds. |
| 456 | */ |
| 457 | #include <sys/time.h> |
| 458 | |
| 459 | char * |
| 460 | autobaud() |
| 461 | { |
| 462 | int rfds; |
| 463 | struct timeval timeout; |
| 464 | char c, *type = "9600-baud"; |
| 465 | int null = 0; |
| 466 | |
| 467 | ioctl(0, TIOCFLUSH, &null); |
| 468 | rfds = 1 << 0; |
| 469 | timeout.tv_sec = 5; |
| 470 | timeout.tv_usec = 0; |
| 471 | if (select(32, (fd_set *)&rfds, (fd_set *)NULL, |
| 472 | (fd_set *)NULL, &timeout) <= 0) |
| 473 | return (type); |
| 474 | if (read(STDIN_FILENO, &c, sizeof(char)) != sizeof(char)) |
| 475 | return (type); |
| 476 | timeout.tv_sec = 0; |
| 477 | timeout.tv_usec = 20; |
| 478 | (void) select(32, (fd_set *)NULL, (fd_set *)NULL, |
| 479 | (fd_set *)NULL, &timeout); |
| 480 | ioctl(0, TIOCFLUSH, &null); |
| 481 | switch (c & 0377) { |
| 482 | |
| 483 | case 0200: /* 300-baud */ |
| 484 | type = "300-baud"; |
| 485 | break; |
| 486 | |
| 487 | case 0346: /* 1200-baud */ |
| 488 | type = "1200-baud"; |
| 489 | break; |
| 490 | |
| 491 | case 015: /* 2400-baud */ |
| 492 | case 0215: |
| 493 | type = "2400-baud"; |
| 494 | break; |
| 495 | |
| 496 | default: /* 4800-baud */ |
| 497 | type = "4800-baud"; |
| 498 | break; |
| 499 | |
| 500 | case 0377: /* 9600-baud */ |
| 501 | type = "9600-baud"; |
| 502 | break; |
| 503 | } |
| 504 | return (type); |
| 505 | } |