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-rw-r--r--libexec/getty/subr.c531
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diff --git a/libexec/getty/subr.c b/libexec/getty/subr.c
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--- a/libexec/getty/subr.c
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-/*
- * Copyright (c) 1983, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#ifndef lint
-static char sccsid[] = "@(#)subr.c 8.1 (Berkeley) 6/4/93";
-#endif /* not lint */
-
-/*
- * Melbourne getty.
- */
-#define USE_OLD_TTY
-#include <stdlib.h>
-#include <sgtty.h>
-#include <string.h>
-#include <unistd.h>
-
-#include "gettytab.h"
-#include "extern.h"
-#include "pathnames.h"
-
-extern struct sgttyb tmode;
-extern struct tchars tc;
-extern struct ltchars ltc;
-
-/*
- * Get a table entry.
- */
-void
-gettable(name, buf)
- char *name, *buf;
-{
- register struct gettystrs *sp;
- register struct gettynums *np;
- register struct gettyflags *fp;
- long n;
- char *dba[2];
- dba[0] = _PATH_GETTYTAB;
- dba[1] = 0;
-
- if (cgetent(&buf, dba, name) != 0)
- return;
-
- for (sp = gettystrs; sp->field; sp++)
- cgetstr(buf, sp->field, &sp->value);
- for (np = gettynums; np->field; np++) {
- if (cgetnum(buf, np->field, &n) == -1)
- np->set = 0;
- else {
- np->set = 1;
- np->value = n;
- }
- }
- for (fp = gettyflags; fp->field; fp++) {
- if (cgetcap(buf, fp->field, ':') == NULL)
- fp->set = 0;
- else {
- fp->set = 1;
- fp->value = 1 ^ fp->invrt;
- }
- }
-#ifdef DEBUG
- printf("name=\"%s\", buf=\"%s\"\n", name, buf);
- for (sp = gettystrs; sp->field; sp++)
- printf("cgetstr: %s=%s\n", sp->field, sp->value);
- for (np = gettynums; np->field; np++)
- printf("cgetnum: %s=%d\n", np->field, np->value);
- for (fp = gettyflags; fp->field; fp++)
- printf("cgetflags: %s='%c' set='%c'\n", fp->field,
- fp->value + '0', fp->set + '0');
- exit(1);
-#endif /* DEBUG */
-}
-
-void
-gendefaults()
-{
- register struct gettystrs *sp;
- register struct gettynums *np;
- register struct gettyflags *fp;
-
- for (sp = gettystrs; sp->field; sp++)
- if (sp->value)
- sp->defalt = sp->value;
- for (np = gettynums; np->field; np++)
- if (np->set)
- np->defalt = np->value;
- for (fp = gettyflags; fp->field; fp++)
- if (fp->set)
- fp->defalt = fp->value;
- else
- fp->defalt = fp->invrt;
-}
-
-void
-setdefaults()
-{
- register struct gettystrs *sp;
- register struct gettynums *np;
- register struct gettyflags *fp;
-
- for (sp = gettystrs; sp->field; sp++)
- if (!sp->value)
- sp->value = sp->defalt;
- for (np = gettynums; np->field; np++)
- if (!np->set)
- np->value = np->defalt;
- for (fp = gettyflags; fp->field; fp++)
- if (!fp->set)
- fp->value = fp->defalt;
-}
-
-static char **
-charnames[] = {
- &ER, &KL, &IN, &QU, &XN, &XF, &ET, &BK,
- &SU, &DS, &RP, &FL, &WE, &LN, 0
-};
-
-static char *
-charvars[] = {
- &tmode.sg_erase, &tmode.sg_kill, &tc.t_intrc,
- &tc.t_quitc, &tc.t_startc, &tc.t_stopc,
- &tc.t_eofc, &tc.t_brkc, &ltc.t_suspc,
- &ltc.t_dsuspc, &ltc.t_rprntc, &ltc.t_flushc,
- &ltc.t_werasc, &ltc.t_lnextc, 0
-};
-
-void
-setchars()
-{
- register int i;
- register char *p;
-
- for (i = 0; charnames[i]; i++) {
- p = *charnames[i];
- if (p && *p)
- *charvars[i] = *p;
- else
- *charvars[i] = '\377';
- }
-}
-
-long
-setflags(n)
- int n;
-{
- register long f;
-
- switch (n) {
- case 0:
- if (F0set)
- return(F0);
- break;
- case 1:
- if (F1set)
- return(F1);
- break;
- default:
- if (F2set)
- return(F2);
- break;
- }
-
- f = 0;
-
- if (AP)
- f |= ANYP;
- else if (OP)
- f |= ODDP;
- else if (EP)
- f |= EVENP;
-
- if (UC)
- f |= LCASE;
-
- if (NL)
- f |= CRMOD;
-
- f |= delaybits();
-
- if (n == 1) { /* read mode flags */
- if (RW)
- f |= RAW;
- else
- f |= CBREAK;
- return (f);
- }
-
- if (!HT)
- f |= XTABS;
-
- if (n == 0)
- return (f);
-
- if (CB)
- f |= CRTBS;
-
- if (CE)
- f |= CRTERA;
-
- if (CK)
- f |= CRTKIL;
-
- if (PE)
- f |= PRTERA;
-
- if (EC)
- f |= ECHO;
-
- if (XC)
- f |= CTLECH;
-
- if (DX)
- f |= DECCTQ;
-
- return (f);
-}
-
-struct delayval {
- unsigned delay; /* delay in ms */
- int bits;
-};
-
-/*
- * below are random guesses, I can't be bothered checking
- */
-
-struct delayval crdelay[] = {
- { 1, CR1 },
- { 2, CR2 },
- { 3, CR3 },
- { 83, CR1 },
- { 166, CR2 },
- { 0, CR3 },
-};
-
-struct delayval nldelay[] = {
- { 1, NL1 }, /* special, calculated */
- { 2, NL2 },
- { 3, NL3 },
- { 100, NL2 },
- { 0, NL3 },
-};
-
-struct delayval bsdelay[] = {
- { 1, BS1 },
- { 0, 0 },
-};
-
-struct delayval ffdelay[] = {
- { 1, FF1 },
- { 1750, FF1 },
- { 0, FF1 },
-};
-
-struct delayval tbdelay[] = {
- { 1, TAB1 },
- { 2, TAB2 },
- { 3, XTABS }, /* this is expand tabs */
- { 100, TAB1 },
- { 0, TAB2 },
-};
-
-int
-delaybits()
-{
- register int f;
-
- f = adelay(CD, crdelay);
- f |= adelay(ND, nldelay);
- f |= adelay(FD, ffdelay);
- f |= adelay(TD, tbdelay);
- f |= adelay(BD, bsdelay);
- return (f);
-}
-
-int
-adelay(ms, dp)
- register ms;
- register struct delayval *dp;
-{
- if (ms == 0)
- return (0);
- while (dp->delay && ms > dp->delay)
- dp++;
- return (dp->bits);
-}
-
-char editedhost[32];
-
-void
-edithost(pat)
- register char *pat;
-{
- register char *host = HN;
- register char *res = editedhost;
-
- if (!pat)
- pat = "";
- while (*pat) {
- switch (*pat) {
-
- case '#':
- if (*host)
- host++;
- break;
-
- case '@':
- if (*host)
- *res++ = *host++;
- break;
-
- default:
- *res++ = *pat;
- break;
-
- }
- if (res == &editedhost[sizeof editedhost - 1]) {
- *res = '\0';
- return;
- }
- pat++;
- }
- if (*host)
- strncpy(res, host, sizeof editedhost - (res - editedhost) - 1);
- else
- *res = '\0';
- editedhost[sizeof editedhost - 1] = '\0';
-}
-
-struct speedtab {
- int speed;
- int uxname;
-} speedtab[] = {
- { 50, B50 },
- { 75, B75 },
- { 110, B110 },
- { 134, B134 },
- { 150, B150 },
- { 200, B200 },
- { 300, B300 },
- { 600, B600 },
- { 1200, B1200 },
- { 1800, B1800 },
- { 2400, B2400 },
- { 4800, B4800 },
- { 9600, B9600 },
- { 19200, EXTA },
- { 19, EXTA }, /* for people who say 19.2K */
- { 38400, EXTB },
- { 38, EXTB },
- { 7200, EXTB }, /* alternative */
- { 0 }
-};
-
-int
-speed(val)
- int val;
-{
- register struct speedtab *sp;
-
- if (val <= 15)
- return (val);
-
- for (sp = speedtab; sp->speed; sp++)
- if (sp->speed == val)
- return (sp->uxname);
-
- return (B300); /* default in impossible cases */
-}
-
-void
-makeenv(env)
- char *env[];
-{
- static char termbuf[128] = "TERM=";
- register char *p, *q;
- register char **ep;
-
- ep = env;
- if (TT && *TT) {
- strcat(termbuf, TT);
- *ep++ = termbuf;
- }
- if (p = EV) {
- q = p;
- while (q = strchr(q, ',')) {
- *q++ = '\0';
- *ep++ = p;
- p = q;
- }
- if (*p)
- *ep++ = p;
- }
- *ep = (char *)0;
-}
-
-/*
- * This speed select mechanism is written for the Develcon DATASWITCH.
- * The Develcon sends a string of the form "B{speed}\n" at a predefined
- * baud rate. This string indicates the user's actual speed.
- * The routine below returns the terminal type mapped from derived speed.
- */
-struct portselect {
- char *ps_baud;
- char *ps_type;
-} portspeeds[] = {
- { "B110", "std.110" },
- { "B134", "std.134" },
- { "B150", "std.150" },
- { "B300", "std.300" },
- { "B600", "std.600" },
- { "B1200", "std.1200" },
- { "B2400", "std.2400" },
- { "B4800", "std.4800" },
- { "B9600", "std.9600" },
- { "B19200", "std.19200" },
- { 0 }
-};
-
-char *
-portselector()
-{
- char c, baud[20], *type = "default";
- register struct portselect *ps;
- int len;
-
- alarm(5*60);
- for (len = 0; len < sizeof (baud) - 1; len++) {
- if (read(STDIN_FILENO, &c, 1) <= 0)
- break;
- c &= 0177;
- if (c == '\n' || c == '\r')
- break;
- if (c == 'B')
- len = 0; /* in case of leading garbage */
- baud[len] = c;
- }
- baud[len] = '\0';
- for (ps = portspeeds; ps->ps_baud; ps++)
- if (strcmp(ps->ps_baud, baud) == 0) {
- type = ps->ps_type;
- break;
- }
- sleep(2); /* wait for connection to complete */
- return (type);
-}
-
-/*
- * This auto-baud speed select mechanism is written for the Micom 600
- * portselector. Selection is done by looking at how the character '\r'
- * is garbled at the different speeds.
- */
-#include <sys/time.h>
-
-char *
-autobaud()
-{
- int rfds;
- struct timeval timeout;
- char c, *type = "9600-baud";
- int null = 0;
-
- ioctl(0, TIOCFLUSH, &null);
- rfds = 1 << 0;
- timeout.tv_sec = 5;
- timeout.tv_usec = 0;
- if (select(32, (fd_set *)&rfds, (fd_set *)NULL,
- (fd_set *)NULL, &timeout) <= 0)
- return (type);
- if (read(STDIN_FILENO, &c, sizeof(char)) != sizeof(char))
- return (type);
- timeout.tv_sec = 0;
- timeout.tv_usec = 20;
- (void) select(32, (fd_set *)NULL, (fd_set *)NULL,
- (fd_set *)NULL, &timeout);
- ioctl(0, TIOCFLUSH, &null);
- switch (c & 0377) {
-
- case 0200: /* 300-baud */
- type = "300-baud";
- break;
-
- case 0346: /* 1200-baud */
- type = "1200-baud";
- break;
-
- case 015: /* 2400-baud */
- case 0215:
- type = "2400-baud";
- break;
-
- default: /* 4800-baud */
- type = "4800-baud";
- break;
-
- case 0377: /* 9600-baud */
- type = "9600-baud";
- break;
- }
- return (type);
-}
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