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/*static char sccsid[] = "from: @(#)subr.c 8.1 (Berkeley) 6/4/93";*/
36static char rcsid[] = "$Id$";
37#endif /* not lint */
38
39/*
40 * Melbourne getty.
41 */
42#define COMPAT_43
43#include <stdlib.h>
44#include <unistd.h>
45#include <string.h>
46#include <termios.h>
47#include <sys/ioctl.h>
48#include <sys/param.h>
49#ifdef DEBUG
50#include <stdio.h>
51#endif
52
53#include "gettytab.h"
54#include "pathnames.h"
55#include "extern.h"
56
57
58#ifdef COMPAT_43
59static void compatflags __P((long));
60#endif
61
62/*
63 * Get a table entry.
64 */
65void
66gettable(name, buf)
67 const char *name;
68 char *buf;
69{
70 register struct gettystrs *sp;
71 register struct gettynums *np;
72 register struct gettyflags *fp;
73 long n;
74 const 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\"\r\n", name, buf);
101 for (sp = gettystrs; sp->field; sp++)
102 printf("cgetstr: %s=%s\r\n", sp->field, sp->value);
103 for (np = gettynums; np->field; np++)
104 printf("cgetnum: %s=%d\r\n", np->field, np->value);
105 for (fp = gettyflags; fp->field; fp++)
106 printf("cgetflags: %s='%c' set='%c'\r\n", fp->field,
107 fp->value + '0', fp->set + '0');
108#endif /* DEBUG */
109}
110
111void
112gendefaults()
113{
114 register struct gettystrs *sp;
115 register struct gettynums *np;
116 register struct gettyflags *fp;
117
118 for (sp = gettystrs; sp->field; sp++)
119 if (sp->value)
120 sp->defalt = sp->value;
121 for (np = gettynums; np->field; np++)
122 if (np->set)
123 np->defalt = np->value;
124 for (fp = gettyflags; fp->field; fp++)
125 if (fp->set)
126 fp->defalt = fp->value;
127 else
128 fp->defalt = fp->invrt;
129}
130
131void
132setdefaults()
133{
134 register struct gettystrs *sp;
135 register struct gettynums *np;
136 register struct gettyflags *fp;
137
138 for (sp = gettystrs; sp->field; sp++)
139 if (!sp->value)
140 sp->value = sp->defalt;
141 for (np = gettynums; np->field; np++)
142 if (!np->set)
143 np->value = np->defalt;
144 for (fp = gettyflags; fp->field; fp++)
145 if (!fp->set)
146 fp->value = fp->defalt;
147}
148
149static char **
150charnames[] = {
151 &ER, &KL, &IN, &QU, &XN, &XF, &ET, &BK,
152 &SU, &DS, &RP, &FL, &WE, &LN, 0
153};
154
155static char *
156charvars[] = {
157 &tmode.c_cc[VERASE], &tmode.c_cc[VKILL], &tmode.c_cc[VINTR],
158 &tmode.c_cc[VQUIT], &tmode.c_cc[VSTART], &tmode.c_cc[VSTOP],
159 &tmode.c_cc[VEOF], &tmode.c_cc[VEOL], &tmode.c_cc[VSUSP],
160 &tmode.c_cc[VDSUSP], &tmode.c_cc[VREPRINT], &tmode.c_cc[VDISCARD],
161 &tmode.c_cc[VWERASE], &tmode.c_cc[VLNEXT], 0
162};
163
164void
165setchars()
166{
167 register int i;
168 register const char *p;
169
170 for (i = 0; charnames[i]; i++) {
171 p = *charnames[i];
172 if (p && *p)
173 *charvars[i] = *p;
174 else
175 *charvars[i] = _POSIX_VDISABLE;
176 }
177}
178
179/* Macros to clear/set/test flags. */
180#define SET(t, f) (t) |= (f)
181#define CLR(t, f) (t) &= ~(f)
182#define ISSET(t, f) ((t) & (f))
183
184void
185setflags(n)
186 int n;
187{
188 register tcflag_t iflag, oflag, cflag, lflag;
189
190#ifdef COMPAT_43
191 switch (n) {
192 case 0:
193 if (F0set) {
194 compatflags(F0);
195 return;
196 }
197 break;
198 case 1:
199 if (F1set) {
200 compatflags(F1);
201 return;
202 }
203 break;
204 default:
205 if (F2set) {
206 compatflags(F2);
207 return;
208 }
209 break;
210 }
211#endif
212
213 switch (n) {
214 case 0:
215 if (C0set && I0set && L0set && O0set) {
216 tmode.c_cflag = C0;
217 tmode.c_iflag = I0;
218 tmode.c_lflag = L0;
219 tmode.c_oflag = O0;
220 return;
221 }
222 break;
223 case 1:
224 if (C1set && I1set && L1set && O1set) {
225 tmode.c_cflag = C1;
226 tmode.c_iflag = I1;
227 tmode.c_lflag = L1;
228 tmode.c_oflag = O1;
229 return;
230 }
231 break;
232 default:
233 if (C2set && I2set && L2set && O2set) {
234 tmode.c_cflag = C2;
235 tmode.c_iflag = I2;
236 tmode.c_lflag = L2;
237 tmode.c_oflag = O2;
238 return;
239 }
240 break;
241 }
242
243 iflag = omode.c_iflag;
244 oflag = omode.c_oflag;
245 cflag = omode.c_cflag;
246 lflag = omode.c_lflag;
247
248 if (NP) {
249 CLR(cflag, CSIZE|PARENB);
250 SET(cflag, CS8);
251 CLR(iflag, ISTRIP|INPCK|IGNPAR);
252 } else if (AP || EP || OP) {
253 CLR(cflag, CSIZE);
254 SET(cflag, CS7|PARENB);
255 SET(iflag, ISTRIP);
256 if (OP && !EP) {
257 SET(iflag, INPCK|IGNPAR);
258 SET(cflag, PARODD);
259 if (AP)
260 CLR(iflag, INPCK);
261 } else if (EP && !OP) {
262 SET(iflag, INPCK|IGNPAR);
263 CLR(cflag, PARODD);
264 if (AP)
265 CLR(iflag, INPCK);
266 } else if (AP || (EP && OP)) {
267 CLR(iflag, INPCK|IGNPAR);
268 CLR(cflag, PARODD);
269 }
270 } /* else, leave as is */
271
272#if 0
273 if (UC)
274 f |= LCASE;
275#endif
276
277 if (HC)
278 SET(cflag, HUPCL);
279 else
280 CLR(cflag, HUPCL);
281
282 if (MB)
283 SET(cflag, MDMBUF);
284 else
285 CLR(cflag, MDMBUF);
286
287 if (HW)
288 SET(cflag, CRTSCTS);
289 else
290 CLR(cflag, CRTSCTS);
291
292 if (NL) {
293 SET(iflag, ICRNL);
294 SET(oflag, ONLCR|OPOST);
295 } else {
296 CLR(iflag, ICRNL);
297 CLR(oflag, ONLCR);
298 }
299
300 if (!HT)
301 SET(oflag, OXTABS|OPOST);
302 else
303 CLR(oflag, OXTABS);
304
305#ifdef XXX_DELAY
306 SET(f, delaybits());
307#endif
308
309 if (n == 1) { /* read mode flags */
310 if (RW) {
311 iflag = 0;
312 CLR(oflag, OPOST);
313 CLR(cflag, CSIZE|PARENB);
314 SET(cflag, CS8);
315 lflag = 0;
316 } else {
317 CLR(lflag, ICANON);
318 }
319 goto out;
320 }
321
322 if (n == 0)
323 goto out;
324
325#if 0
326 if (CB)
327 SET(f, CRTBS);
328#endif
329
330 if (CE)
331 SET(lflag, ECHOE);
332 else
333 CLR(lflag, ECHOE);
334
335 if (CK)
336 SET(lflag, ECHOKE);
337 else
338 CLR(lflag, ECHOKE);
339
340 if (PE)
341 SET(lflag, ECHOPRT);
342 else
343 CLR(lflag, ECHOPRT);
344
345 if (EC)
346 SET(lflag, ECHO);
347 else
348 CLR(lflag, ECHO);
349
350 if (XC)
351 SET(lflag, ECHOCTL);
352 else
353 CLR(lflag, ECHOCTL);
354
355 if (DX)
356 SET(lflag, IXANY);
357 else
358 CLR(lflag, IXANY);
359
360out:
361 tmode.c_iflag = iflag;
362 tmode.c_oflag = oflag;
363 tmode.c_cflag = cflag;
364 tmode.c_lflag = lflag;
365}
366
367#ifdef COMPAT_43
368/*
369 * Old TTY => termios, snatched from <sys/kern/tty_compat.c>
370 */
371void
372compatflags(flags)
373register long flags;
374{
375 register tcflag_t iflag, oflag, cflag, lflag;
376
377 iflag = BRKINT|ICRNL|IMAXBEL|IXON|IXANY;
378 oflag = OPOST|ONLCR|OXTABS;
379 cflag = CREAD;
380 lflag = ICANON|ISIG|IEXTEN;
381
382 if (ISSET(flags, TANDEM))
383 SET(iflag, IXOFF);
384 else
385 CLR(iflag, IXOFF);
386 if (ISSET(flags, ECHO))
387 SET(lflag, ECHO);
388 else
389 CLR(lflag, ECHO);
390 if (ISSET(flags, CRMOD)) {
391 SET(iflag, ICRNL);
392 SET(oflag, ONLCR);
393 } else {
394 CLR(iflag, ICRNL);
395 CLR(oflag, ONLCR);
396 }
397 if (ISSET(flags, XTABS))
398 SET(oflag, OXTABS);
399 else
400 CLR(oflag, OXTABS);
401
402
403 if (ISSET(flags, RAW)) {
404 iflag &= IXOFF;
405 CLR(lflag, ISIG|ICANON|IEXTEN);
406 CLR(cflag, PARENB);
407 } else {
408 SET(iflag, BRKINT|IXON|IMAXBEL);
409 SET(lflag, ISIG|IEXTEN);
410 if (ISSET(flags, CBREAK))
411 CLR(lflag, ICANON);
412 else
413 SET(lflag, ICANON);
414 switch (ISSET(flags, ANYP)) {
415 case 0:
416 CLR(cflag, PARENB);
417 break;
418 case ANYP:
419 SET(cflag, PARENB);
420 CLR(iflag, INPCK);
421 break;
422 case EVENP:
423 SET(cflag, PARENB);
424 SET(iflag, INPCK);
425 CLR(cflag, PARODD);
426 break;
427 case ODDP:
428 SET(cflag, PARENB);
429 SET(iflag, INPCK);
430 SET(cflag, PARODD);
431 break;
432 }
433 }
434
435 /* Nothing we can do with CRTBS. */
436 if (ISSET(flags, PRTERA))
437 SET(lflag, ECHOPRT);
438 else
439 CLR(lflag, ECHOPRT);
440 if (ISSET(flags, CRTERA))
441 SET(lflag, ECHOE);
442 else
443 CLR(lflag, ECHOE);
444 /* Nothing we can do with TILDE. */
445 if (ISSET(flags, MDMBUF))
446 SET(cflag, MDMBUF);
447 else
448 CLR(cflag, MDMBUF);
449 if (ISSET(flags, NOHANG))
450 CLR(cflag, HUPCL);
451 else
452 SET(cflag, HUPCL);
453 if (ISSET(flags, CRTKIL))
454 SET(lflag, ECHOKE);
455 else
456 CLR(lflag, ECHOKE);
457 if (ISSET(flags, CTLECH))
458 SET(lflag, ECHOCTL);
459 else
460 CLR(lflag, ECHOCTL);
461 if (!ISSET(flags, DECCTQ))
462 SET(iflag, IXANY);
463 else
464 CLR(iflag, IXANY);
465 CLR(lflag, TOSTOP|FLUSHO|PENDIN|NOFLSH);
466 SET(lflag, ISSET(flags, TOSTOP|FLUSHO|PENDIN|NOFLSH));
467
468 if (ISSET(flags, RAW|LITOUT|PASS8)) {
469 CLR(cflag, CSIZE);
470 SET(cflag, CS8);
471 if (!ISSET(flags, RAW|PASS8))
472 SET(iflag, ISTRIP);
473 else
474 CLR(iflag, ISTRIP);
475 if (!ISSET(flags, RAW|LITOUT))
476 SET(oflag, OPOST);
477 else
478 CLR(oflag, OPOST);
479 } else {
480 CLR(cflag, CSIZE);
481 SET(cflag, CS7);
482 SET(iflag, ISTRIP);
483 SET(oflag, OPOST);
484 }
485
486 tmode.c_iflag = iflag;
487 tmode.c_oflag = oflag;
488 tmode.c_cflag = cflag;
489 tmode.c_lflag = lflag;
490}
491#endif
492
493#ifdef XXX_DELAY
494struct delayval {
495 unsigned delay; /* delay in ms */
496 int bits;
497};
498
499/*
500 * below are random guesses, I can't be bothered checking
501 */
502
503struct delayval crdelay[] = {
504 { 1, CR1 },
505 { 2, CR2 },
506 { 3, CR3 },
507 { 83, CR1 },
508 { 166, CR2 },
509 { 0, CR3 },
510};
511
512struct delayval nldelay[] = {
513 { 1, NL1 }, /* special, calculated */
514 { 2, NL2 },
515 { 3, NL3 },
516 { 100, NL2 },
517 { 0, NL3 },
518};
519
520struct delayval bsdelay[] = {
521 { 1, BS1 },
522 { 0, 0 },
523};
524
525struct delayval ffdelay[] = {
526 { 1, FF1 },
527 { 1750, FF1 },
528 { 0, FF1 },
529};
530
531struct delayval tbdelay[] = {
532 { 1, TAB1 },
533 { 2, TAB2 },
534 { 3, XTABS }, /* this is expand tabs */
535 { 100, TAB1 },
536 { 0, TAB2 },
537};
538
539int
540delaybits()
541{
542 register int f;
543
544 f = adelay(CD, crdelay);
545 f |= adelay(ND, nldelay);
546 f |= adelay(FD, ffdelay);
547 f |= adelay(TD, tbdelay);
548 f |= adelay(BD, bsdelay);
549 return (f);
550}
551
552int
553adelay(ms, dp)
554 register ms;
555 register struct delayval *dp;
556{
557 if (ms == 0)
558 return (0);
559 while (dp->delay && ms > dp->delay)
560 dp++;
561 return (dp->bits);
562}
563#endif
564
565char editedhost[MAXHOSTNAMELEN];
566
567void
568edithost(pat)
569 register const char *pat;
570{
571 register const char *host = HN;
572 register char *res = editedhost;
573
574 if (!pat)
575 pat = "";
576 while (*pat) {
577 switch (*pat) {
578
579 case '#':
580 if (*host)
581 host++;
582 break;
583
584 case '@':
585 if (*host)
586 *res++ = *host++;
587 break;
588
589 default:
590 *res++ = *pat;
591 break;
592
593 }
594 if (res == &editedhost[sizeof editedhost - 1]) {
595 *res = '\0';
596 return;
597 }
598 pat++;
599 }
600 if (*host)
601 strncpy(res, host, sizeof editedhost - (res - editedhost) - 1);
602 else
603 *res = '\0';
604 editedhost[sizeof editedhost - 1] = '\0';
605}
606
607static struct speedtab {
608 int speed;
609 int uxname;
610} speedtab[] = {
611 { 50, B50 },
612 { 75, B75 },
613 { 110, B110 },
614 { 134, B134 },
615 { 150, B150 },
616 { 200, B200 },
617 { 300, B300 },
618 { 600, B600 },
619 { 1200, B1200 },
620 { 1800, B1800 },
621 { 2400, B2400 },
622 { 4800, B4800 },
623 { 9600, B9600 },
624 { 19200, EXTA },
625 { 19, EXTA }, /* for people who say 19.2K */
626 { 38400, EXTB },
627 { 38, EXTB },
628 { 7200, EXTB }, /* alternative */
629 { 57600, B57600 },
630 { 115200, B115200 },
631 { 0 }
632};
633
634int
635speed(val)
636 int val;
637{
638 register struct speedtab *sp;
639
640 if (val <= B115200)
641 return (val);
642
643 for (sp = speedtab; sp->speed; sp++)
644 if (sp->speed == val)
645 return (sp->uxname);
646
647 return (B300); /* default in impossible cases */
648}
649
650void
651makeenv(env)
652 char *env[];
653{
654 static char termbuf[128] = "TERM=";
655 register char *p, *q;
656 register char **ep;
657
658 ep = env;
659 if (TT && *TT) {
660 strcat(termbuf, TT);
661 *ep++ = termbuf;
662 }
663 if ((p = EV)) {
664 q = p;
665 while ((q = strchr(q, ','))) {
666 *q++ = '\0';
667 *ep++ = p;
668 p = q;
669 }
670 if (*p)
671 *ep++ = p;
672 }
673 *ep = (char *)0;
674}
675
676/*
677 * This speed select mechanism is written for the Develcon DATASWITCH.
678 * The Develcon sends a string of the form "B{speed}\n" at a predefined
679 * baud rate. This string indicates the user's actual speed.
680 * The routine below returns the terminal type mapped from derived speed.
681 */
682struct portselect {
683 const char *ps_baud;
684 const char *ps_type;
685} portspeeds[] = {
686 { "B110", "std.110" },
687 { "B134", "std.134" },
688 { "B150", "std.150" },
689 { "B300", "std.300" },
690 { "B600", "std.600" },
691 { "B1200", "std.1200" },
692 { "B2400", "std.2400" },
693 { "B4800", "std.4800" },
694 { "B9600", "std.9600" },
695 { "B19200", "std.19200" },
696 { 0 }
697};
698
699const char *
700portselector()
701{
702 char c, baud[20];
703 const char *type = "default";
704 register struct portselect *ps;
705 int len;
706
707 alarm(5*60);
708 for (len = 0; len < sizeof (baud) - 1; len++) {
709 if (read(STDIN_FILENO, &c, 1) <= 0)
710 break;
711 c &= 0177;
712 if (c == '\n' || c == '\r')
713 break;
714 if (c == 'B')
715 len = 0; /* in case of leading garbage */
716 baud[len] = c;
717 }
718 baud[len] = '\0';
719 for (ps = portspeeds; ps->ps_baud; ps++)
720 if (strcmp(ps->ps_baud, baud) == 0) {
721 type = ps->ps_type;
722 break;
723 }
724 sleep(2); /* wait for connection to complete */
725 return (type);
726}
727
728/*
729 * This auto-baud speed select mechanism is written for the Micom 600
730 * portselector. Selection is done by looking at how the character '\r'
731 * is garbled at the different speeds.
732 */
733#include <sys/time.h>
734
735const char *
736autobaud()
737{
738 int rfds;
739 struct timeval timeout;
740 char c;
741 const char *type = "9600-baud";
742
743 (void)tcflush(0, TCIOFLUSH);
744 rfds = 1 << 0;
745 timeout.tv_sec = 5;
746 timeout.tv_usec = 0;
747 if (select(32, (fd_set *)&rfds, (fd_set *)NULL,
748 (fd_set *)NULL, &timeout) <= 0)
749 return (type);
750 if (read(STDIN_FILENO, &c, sizeof(char)) != sizeof(char))
751 return (type);
752 timeout.tv_sec = 0;
753 timeout.tv_usec = 20;
754 (void) select(32, (fd_set *)NULL, (fd_set *)NULL,
755 (fd_set *)NULL, &timeout);
756 (void)tcflush(0, TCIOFLUSH);
757 switch (c & 0377) {
758
759 case 0200: /* 300-baud */
760 type = "300-baud";
761 break;
762
763 case 0346: /* 1200-baud */
764 type = "1200-baud";
765 break;
766
767 case 015: /* 2400-baud */
768 case 0215:
769 type = "2400-baud";
770 break;
771
772 default: /* 4800-baud */
773 type = "4800-baud";
774 break;
775
776 case 0377: /* 9600-baud */
777 type = "9600-baud";
778 break;
779 }
780 return (type);
781}