NetBSD/libexec/getty/subr.c

718 lines
13 KiB
C

/*
* Copyright (c) 1983 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[] = "from: @(#)subr.c 5.10 (Berkeley) 2/26/91";*/
static char rcsid[] = "$Id: subr.c,v 1.7 1994/04/28 22:12:31 pk Exp $";
#endif /* not lint */
/*
* Melbourne getty.
*/
#define COMPAT_43
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <termios.h>
#include <sys/ioctl.h>
#include "gettytab.h"
#include "pathnames.h"
extern struct termios tmode;
static void compatflags __P((long));
/*
* Get a table entry.
*/
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 */
}
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;
}
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.c_cc[VERASE], &tmode.c_cc[VKILL], &tmode.c_cc[VINTR],
&tmode.c_cc[VQUIT], &tmode.c_cc[VSTART], &tmode.c_cc[VSTOP],
&tmode.c_cc[VEOF], &tmode.c_cc[VEOL], &tmode.c_cc[VSUSP],
&tmode.c_cc[VDSUSP], &tmode.c_cc[VREPRINT], &tmode.c_cc[VDISCARD],
&tmode.c_cc[VWERASE], &tmode.c_cc[VLNEXT], 0
};
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';
}
}
void
setflags(n)
{
register tcflag_t iflag, oflag, cflag, lflag;
#ifdef COMPAT_43
switch (n) {
case 0:
if (F0set) {
compatflags(F0);
return;
}
break;
case 1:
if (F1set) {
compatflags(F1);
return;
}
break;
default:
if (F2set) {
compatflags(F2);
return;
}
break;
}
#endif
switch (n) {
case 0:
if (C0set && I0set && L0set && O0set) {
tmode.c_cflag = C0;
tmode.c_iflag = I0;
tmode.c_lflag = L0;
tmode.c_oflag = O0;
return;
}
break;
case 1:
if (C1set && I1set && L1set && O1set) {
tmode.c_cflag = C1;
tmode.c_iflag = I1;
tmode.c_lflag = L1;
tmode.c_oflag = O1;
return;
}
break;
default:
if (C2set && I2set && L2set && O2set) {
tmode.c_cflag = C2;
tmode.c_iflag = I2;
tmode.c_lflag = L2;
tmode.c_oflag = O2;
return;
}
break;
}
iflag = (BRKINT|ICRNL|IMAXBEL|IXON|IXANY);
oflag = (OPOST|ONLCR|OXTABS);
cflag = (CREAD);
lflag = (ICANON|ISIG|IEXTEN);
if (NP) {
iflag |= IGNPAR;
cflag |= CS8;
} else if (AP) {
iflag |= IGNPAR|ISTRIP;
cflag |= CS7;
} else if (OP) {
iflag |= INPCK|ISTRIP;
cflag |= PARENB|PARODD|CS7;
} else if (EP) {
iflag |= INPCK|ISTRIP;
cflag |= PARENB|CS7;
}
#if 0
if (UC)
f |= LCASE;
#endif
if (HC)
cflag |= HUPCL;
if (NL) {
iflag |= ICRNL;
oflag |= ONLCR;
}
#ifdef XXX_DELAY
f |= delaybits();
#endif
if (n == 1) { /* read mode flags */
if (RW) {
iflag = 0;
oflag = 0;
cflag = CREAD|CS8;
lflag = 0;
} else {
lflag &= ~ICANON;
}
goto out;
}
if (!HT)
oflag |= OXTABS;
if (n == 0)
goto out;
#if 0
if (CB)
f |= CRTBS;
#endif
if (CE)
lflag |= ECHOE;
if (CK)
lflag |= ECHOKE;
if (PE)
lflag |= ECHOPRT;
if (EC)
lflag |= ECHO;
if (XC)
lflag |= ECHOCTL;
if (DX)
lflag |= IXANY;
if (MB)
cflag |= MDMBUF;
out:
tmode.c_iflag = iflag;
tmode.c_oflag = oflag;
tmode.c_cflag = cflag;
tmode.c_lflag = lflag;
}
#ifdef COMPAT_43
/*
* Old TTY => termios, snatched from <sys/kern/tty_compat.c>
*/
void
compatflags(flags)
register long flags;
{
register tcflag_t iflag, oflag, cflag, lflag;
iflag = (BRKINT|ICRNL|IMAXBEL|IXON|IXANY);
oflag = (OPOST|ONLCR|OXTABS);
cflag = (CREAD);
lflag = (ICANON|ISIG|IEXTEN);
if (flags & RAW) {
iflag &= IXOFF|IXANY;
oflag &= ~OPOST;
lflag &= ~(ECHOCTL|ISIG|ICANON|IEXTEN);
} else {
iflag |= BRKINT|IXON|IMAXBEL;
oflag |= OPOST;
lflag |= ISIG|IEXTEN|ECHOCTL; /* XXX was echoctl on ? */
if (flags & XTABS)
oflag |= OXTABS;
else
oflag &= ~OXTABS;
if (flags & CBREAK)
lflag &= ~ICANON;
else
lflag |= ICANON;
if (flags&CRMOD) {
iflag |= ICRNL;
oflag |= ONLCR;
} else {
iflag &= ~ICRNL;
oflag &= ~ONLCR;
}
}
if (flags&ECHO)
lflag |= ECHO;
else
lflag &= ~ECHO;
if (flags&(RAW|LITOUT|PASS8)) {
cflag &= ~(CSIZE|PARENB);
cflag |= CS8;
if ((flags&(RAW|PASS8)) == 0)
iflag |= ISTRIP;
else
iflag &= ~ISTRIP;
} else {
cflag &= ~CSIZE;
cflag |= CS7|PARENB;
iflag |= ISTRIP;
}
if ((flags&(EVENP|ODDP)) == EVENP) {
iflag |= INPCK;
cflag &= ~PARODD;
} else if ((flags&(EVENP|ODDP)) == ODDP) {
iflag |= INPCK;
cflag |= PARODD;
} else
iflag &= ~INPCK;
if (flags&LITOUT)
oflag &= ~OPOST; /* move earlier ? */
if (flags&TANDEM)
iflag |= IXOFF;
else
iflag &= ~IXOFF;
if (flags&CRTERA)
lflag |= ECHOE;
else
lflag &= ~ECHOE;
if (flags&CRTKIL)
lflag |= ECHOKE;
else
lflag &= ~ECHOKE;
if (flags&PRTERA)
lflag |= ECHOPRT;
else
lflag &= ~ECHOPRT;
if (flags&CTLECH)
lflag |= ECHOCTL;
else
lflag &= ~ECHOCTL;
if ((flags&DECCTQ) == 0)
lflag |= IXANY;
else
lflag &= ~IXANY;
if (flags & MDMBUF)
cflag |= MDMBUF;
else
cflag &= ~MDMBUF;
if (flags&NOHANG)
cflag &= ~HUPCL;
else
cflag |= HUPCL;
lflag &= ~(TOSTOP|FLUSHO|PENDIN|NOFLSH);
lflag |= flags&(TOSTOP|FLUSHO|PENDIN|NOFLSH);
if (flags&(LITOUT|PASS8)) {
iflag &= ~ISTRIP;
cflag &= ~(CSIZE|PARENB);
cflag |= CS8;
if (flags&LITOUT)
oflag &= ~OPOST;
if ((flags&(PASS8|RAW)) == 0)
iflag |= ISTRIP;
} else if ((flags&RAW) == 0) {
cflag &= ~CSIZE;
cflag |= CS7|PARENB;
oflag |= OPOST;
}
tmode.c_iflag = iflag;
tmode.c_oflag = oflag;
tmode.c_cflag = cflag;
tmode.c_lflag = lflag;
}
#endif
#ifdef XXX_DELAY
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,
};
delaybits()
{
register f;
f = adelay(CD, crdelay);
f |= adelay(ND, nldelay);
f |= adelay(FD, ffdelay);
f |= adelay(TD, tbdelay);
f |= adelay(BD, bsdelay);
return (f);
}
adelay(ms, dp)
register ms;
register struct delayval *dp;
{
if (ms == 0)
return (0);
while (dp->delay && ms > dp->delay)
dp++;
return (dp->bits);
}
#endif
char editedhost[32];
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 */
57600, B57600,
115200, B115200,
0
};
speed(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 */
}
makeenv(env)
char *env[];
{
static char termbuf[128] = "TERM=";
register char *p, *q;
register char **ep;
char *index();
ep = env;
if (TT && *TT) {
strcat(termbuf, TT);
*ep++ = termbuf;
}
if (p = EV) {
q = p;
while (q = index(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);
}