2 * Copyright (c) 1983, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
29 * @(#)from: subr.c 8.1 (Berkeley) 6/4/93
30 * $FreeBSD: src/libexec/getty/subr.c,v 1.16.2.1 2001/05/12 10:16:51 kris Exp $
44 #include <sys/ioctl.h>
45 #include <sys/param.h>
50 #include "pathnames.h"
55 static void compatflags (long);
62 gettable(const char *name, char *buf)
66 struct gettyflags *fp;
73 static int firsttime = 1;
75 dba[0] = _PATH_GETTYTAB;
80 * we need to strdup() anything in the strings array
81 * initially in order to simplify things later
83 for (sp = gettystrs; sp->field; sp++)
84 if (sp->value != NULL) {
85 /* handle these ones more carefully */
86 if (sp >= &gettystrs[4] && sp <= &gettystrs[6])
89 l = strlen(sp->value) + 1;
90 if ((p = malloc(l)) != NULL) {
91 strncpy(p, sp->value, l);
95 * replace, even if NULL, else we'll
96 * have problems with free()ing static mem
103 switch (cgetent(&buf, (char **)dba, (char *)name)) {
105 msg = "%s: couldn't resolve 'tc=' in gettytab '%s'";
109 msg = "%s: unknown gettytab entry '%s'";
112 msg = "%s: retrieving gettytab entry '%s': %m";
115 msg = "%s: recursive 'tc=' reference gettytab entry '%s'";
118 msg = "%s: unexpected cgetent() error for entry '%s'";
123 syslog(LOG_ERR, msg, "getty", name);
127 for (sp = gettystrs; sp->field; sp++) {
128 if ((l = cgetstr(buf, (char*)sp->field, &p)) >= 0) {
130 /* prefer existing value */
131 if (strcmp(p, sp->value) != 0)
139 } else if (l == -1) {
145 for (np = gettynums; np->field; np++) {
146 if (cgetnum(buf, (char*)np->field, &n) == -1)
154 for (fp = gettyflags; fp->field; fp++) {
155 if (cgetcap(buf, (char *)fp->field, ':') == NULL)
159 fp->value = 1 ^ fp->invrt;
164 printf("name=\"%s\", buf=\"%s\"\r\n", name, buf);
165 for (sp = gettystrs; sp->field; sp++)
166 printf("cgetstr: %s=%s\r\n", sp->field, sp->value);
167 for (np = gettynums; np->field; np++)
168 printf("cgetnum: %s=%d\r\n", np->field, np->value);
169 for (fp = gettyflags; fp->field; fp++)
170 printf("cgetflags: %s='%c' set='%c'\r\n", fp->field,
171 fp->value + '0', fp->set + '0');
178 struct gettystrs *sp;
179 struct gettynums *np;
180 struct gettyflags *fp;
182 for (sp = gettystrs; sp->field; sp++)
184 sp->defalt = strdup(sp->value);
185 for (np = gettynums; np->field; np++)
187 np->defalt = np->value;
188 for (fp = gettyflags; fp->field; fp++)
190 fp->defalt = fp->value;
192 fp->defalt = fp->invrt;
198 struct gettystrs *sp;
199 struct gettynums *np;
200 struct gettyflags *fp;
202 for (sp = gettystrs; sp->field; sp++)
204 sp->value = !sp->defalt ? sp->defalt
205 : strdup(sp->defalt);
206 for (np = gettynums; np->field; np++)
208 np->value = np->defalt;
209 for (fp = gettyflags; fp->field; fp++)
211 fp->value = fp->defalt;
216 &ER, &KL, &IN, &QU, &XN, &XF, &ET, &BK,
217 &SU, &DS, &RP, &FL, &WE, &LN, 0
222 &tmode.c_cc[VERASE], &tmode.c_cc[VKILL], &tmode.c_cc[VINTR],
223 &tmode.c_cc[VQUIT], &tmode.c_cc[VSTART], &tmode.c_cc[VSTOP],
224 &tmode.c_cc[VEOF], &tmode.c_cc[VEOL], &tmode.c_cc[VSUSP],
225 &tmode.c_cc[VDSUSP], &tmode.c_cc[VREPRINT], &tmode.c_cc[VDISCARD],
226 &tmode.c_cc[VWERASE], &tmode.c_cc[VLNEXT], 0
235 for (i = 0; charnames[i]; i++) {
240 *charvars[i] = _POSIX_VDISABLE;
244 /* Macros to clear/set/test flags. */
245 #define SET(t, f) (t) |= (f)
246 #define CLR(t, f) (t) &= ~(f)
247 #define ISSET(t, f) ((t) & (f))
252 tcflag_t iflag, oflag, cflag, lflag;
279 if (C0set && I0set && L0set && O0set) {
288 if (C1set && I1set && L1set && O1set) {
297 if (C2set && I2set && L2set && O2set) {
307 iflag = omode.c_iflag;
308 oflag = omode.c_oflag;
309 cflag = omode.c_cflag;
310 lflag = omode.c_lflag;
313 CLR(cflag, CSIZE|PARENB);
315 CLR(iflag, ISTRIP|INPCK|IGNPAR);
316 } else if (AP || EP || OP) {
318 SET(cflag, CS7|PARENB);
321 SET(iflag, INPCK|IGNPAR);
325 } else if (EP && !OP) {
326 SET(iflag, INPCK|IGNPAR);
330 } else if (AP || (EP && OP)) {
331 CLR(iflag, INPCK|IGNPAR);
334 } /* else, leave as is */
358 SET(oflag, ONLCR|OPOST);
365 SET(oflag, OXTABS|OPOST);
373 if (n == 1) { /* read mode flags */
377 CLR(cflag, CSIZE|PARENB);
425 tmode.c_iflag = iflag;
426 tmode.c_oflag = oflag;
427 tmode.c_cflag = cflag;
428 tmode.c_lflag = lflag;
433 * Old TTY => termios, snatched from <sys/kern/tty_compat.c>
436 compatflags(long flags)
438 tcflag_t iflag, oflag, cflag, lflag;
440 iflag = BRKINT|ICRNL|IMAXBEL|IXON|IXANY;
441 oflag = OPOST|ONLCR|OXTABS;
443 lflag = ICANON|ISIG|IEXTEN;
445 if (ISSET(flags, TANDEM))
449 if (ISSET(flags, ECHO))
453 if (ISSET(flags, CRMOD)) {
460 if (ISSET(flags, XTABS))
466 if (ISSET(flags, RAW)) {
468 CLR(lflag, ISIG|ICANON|IEXTEN);
471 SET(iflag, BRKINT|IXON|IMAXBEL);
472 SET(lflag, ISIG|IEXTEN);
473 if (ISSET(flags, CBREAK))
477 switch (ISSET(flags, ANYP)) {
498 /* Nothing we can do with CRTBS. */
499 if (ISSET(flags, PRTERA))
503 if (ISSET(flags, CRTERA))
507 /* Nothing we can do with TILDE. */
508 if (ISSET(flags, MDMBUF))
512 if (ISSET(flags, NOHANG))
516 if (ISSET(flags, CRTKIL))
520 if (ISSET(flags, CTLECH))
524 if (!ISSET(flags, DECCTQ))
528 CLR(lflag, TOSTOP|FLUSHO|PENDIN|NOFLSH);
529 SET(lflag, ISSET(flags, TOSTOP|FLUSHO|PENDIN|NOFLSH));
531 if (ISSET(flags, RAW|LITOUT|PASS8)) {
534 if (!ISSET(flags, RAW|PASS8))
538 if (!ISSET(flags, RAW|LITOUT))
549 tmode.c_iflag = iflag;
550 tmode.c_oflag = oflag;
551 tmode.c_cflag = cflag;
552 tmode.c_lflag = lflag;
558 unsigned delay; /* delay in ms */
563 * below are random guesses, I can't be bothered checking
566 struct delayval crdelay[] = {
575 struct delayval nldelay[] = {
576 { 1, NL1 }, /* special, calculated */
583 struct delayval bsdelay[] = {
588 struct delayval ffdelay[] = {
594 struct delayval tbdelay[] = {
597 { 3, XTABS }, /* this is expand tabs */
607 f = adelay(CD, crdelay);
608 f |= adelay(ND, nldelay);
609 f |= adelay(FD, ffdelay);
610 f |= adelay(TD, tbdelay);
611 f |= adelay(BD, bsdelay);
616 adelay(int ms, struct delayval *dp)
620 while (dp->delay && ms > dp->delay)
626 char editedhost[MAXHOSTNAMELEN];
629 edithost(const char *pat)
631 const char *host = HN;
632 char *res = editedhost;
654 if (res == &editedhost[sizeof editedhost - 1]) {
661 strncpy(res, host, sizeof editedhost - (res - editedhost) - 1);
664 editedhost[sizeof editedhost - 1] = '\0';
667 static struct speedtab {
685 { 19, EXTA }, /* for people who say 19.2K */
688 { 7200, EXTB }, /* alternative */
703 for (sp = speedtab; sp->speed; sp++)
704 if (sp->speed == val)
707 return (B300); /* default in impossible cases */
713 static char termbuf[128] = "TERM=";
719 strlcat(termbuf, TT, sizeof(termbuf));
724 while ((q = strchr(q, ','))) {
736 * This speed select mechanism is written for the Develcon DATASWITCH.
737 * The Develcon sends a string of the form "B{speed}\n" at a predefined
738 * baud rate. This string indicates the user's actual speed.
739 * The routine below returns the terminal type mapped from derived speed.
745 { "B110", "std.110" },
746 { "B134", "std.134" },
747 { "B150", "std.150" },
748 { "B300", "std.300" },
749 { "B600", "std.600" },
750 { "B1200", "std.1200" },
751 { "B2400", "std.2400" },
752 { "B4800", "std.4800" },
753 { "B9600", "std.9600" },
754 { "B19200", "std.19200" },
762 const char *type = "default";
763 struct portselect *ps;
767 for (len = 0; len < sizeof (baud) - 1; len++) {
768 if (read(STDIN_FILENO, &c, 1) <= 0)
771 if (c == '\n' || c == '\r')
774 len = 0; /* in case of leading garbage */
778 for (ps = portspeeds; ps->ps_baud; ps++)
779 if (strcmp(ps->ps_baud, baud) == 0) {
783 sleep(2); /* wait for connection to complete */
788 * This auto-baud speed select mechanism is written for the Micom 600
789 * portselector. Selection is done by looking at how the character '\r'
790 * is garbled at the different speeds.
796 struct timeval timeout;
798 const char *type = "9600-baud";
800 (void)tcflush(0, TCIOFLUSH);
804 if (select(32, (fd_set *)&rfds, NULL, NULL, &timeout) <= 0)
806 if (read(STDIN_FILENO, &c, sizeof(char)) != sizeof(char))
809 timeout.tv_usec = 20;
810 (void) select(32, NULL, NULL, NULL, &timeout);
811 (void)tcflush(0, TCIOFLUSH);
814 case 0200: /* 300-baud */
818 case 0346: /* 1200-baud */
822 case 015: /* 2400-baud */
827 default: /* 4800-baud */
831 case 0377: /* 9600-baud */