[apple/system_cmds.git] / getty.tproj / subr.c

/*
 * 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
#if 0
static char sccsid[] = "@(#)from: subr.c	8.1 (Berkeley) 6/4/93";
#endif
static const char rcsid[] =
  "$FreeBSD: src/libexec/getty/subr.c,v 1.19 2004/06/25 10:11:28 phk Exp $";
#endif /* not lint */

/*
 * Melbourne getty.
 */
#ifdef DEBUG
#include <stdio.h>
#endif
#include <stdlib.h>
#include <string.h>
#include <termios.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <sys/param.h>
#include <sys/time.h>
#include <syslog.h>

#include "gettytab.h"
#include "pathnames.h"
#include "extern.h"


/*
 * Get a table entry.
 */
void
gettable(const char *name, char *buf)
{
	struct gettystrs *sp;
	struct gettynums *np;
	struct gettyflags *fp;
	long n;
	int l;
	char *p;
	char *msg = NULL;
	const char *dba[2];

	static int firsttime = 1;

	dba[0] = _PATH_GETTYTAB;
	dba[1] = 0;

	if (firsttime) {
		/*
		 * we need to strdup() anything in the strings array
		 * initially in order to simplify things later
		 */
		for (sp = gettystrs; sp->field; sp++)
			if (sp->value != NULL) {
				/* handle these ones more carefully */
				if (sp >= &gettystrs[4] && sp <= &gettystrs[6])
					l = 2;
				else
					l = strlen(sp->value) + 1;
				if ((p = malloc(l)) != NULL) {
					strncpy(p, sp->value, l);
					p[l-1] = '\0';
				}
				/*
				 * replace, even if NULL, else we'll
				 * have problems with free()ing static mem
				 */
				sp->value = p;
			}
		firsttime = 0;
	}

	switch (cgetent(&buf, (char **)dba, (char *)name)) {
	case 1:
		msg = "%s: couldn't resolve 'tc=' in gettytab '%s'";
	case 0:
		break;
	case -1:
		msg = "%s: unknown gettytab entry '%s'";
		break;
	case -2:
		msg = "%s: retrieving gettytab entry '%s': %m";
		break;
	case -3:
		msg = "%s: recursive 'tc=' reference gettytab entry '%s'";
		break;
	default:
		msg = "%s: unexpected cgetent() error for entry '%s'";
		break;
	}

	if (msg != NULL) {
		syslog(LOG_ERR, msg, "getty", name);
		return;
	}

	for (sp = gettystrs; sp->field; sp++) {
		if ((l = cgetstr(buf, (char*)sp->field, &p)) >= 0) {
			if (sp->value) {
				/* prefer existing value */
				if (strcmp(p, sp->value) != 0)
					free(sp->value);
				else {
					free(p);
					p = sp->value;
				}
			}
			sp->value = p;
		} else if (l == -1) {
			free(sp->value);
			sp->value = NULL;
		}
	}

	for (np = gettynums; np->field; np++) {
		if (cgetnum(buf, (char*)np->field, &n) == -1)
			np->set = 0;
		else {
			np->set = 1;
			np->value = n;
		}
	}

	for (fp = gettyflags; fp->field; fp++) {
		if (cgetcap(buf, (char *)fp->field, ':') == NULL)
			fp->set = 0;
		else {
			fp->set = 1;
			fp->value = 1 ^ fp->invrt;
		}
	}

#ifdef DEBUG
	printf("name=\"%s\", buf=\"%s\"\r\n", name, buf);
	for (sp = gettystrs; sp->field; sp++)
		printf("cgetstr: %s=%s\r\n", sp->field, sp->value);
	for (np = gettynums; np->field; np++)
		printf("cgetnum: %s=%d\r\n", np->field, np->value);
	for (fp = gettyflags; fp->field; fp++)
		printf("cgetflags: %s='%c' set='%c'\r\n", fp->field, 
		       fp->value + '0', fp->set + '0');
#endif /* DEBUG */
}

void
gendefaults(void)
{
	struct gettystrs *sp;
	struct gettynums *np;
	struct gettyflags *fp;

	for (sp = gettystrs; sp->field; sp++)
		if (sp->value)
			sp->defalt = strdup(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(void)
{
	struct gettystrs *sp;
	struct gettynums *np;
	struct gettyflags *fp;

	for (sp = gettystrs; sp->field; sp++)
		if (!sp->value)
			sp->value = !sp->defalt ? sp->defalt
						: strdup(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[] = {
	(char*)&tmode.c_cc[VERASE],
	(char*)&tmode.c_cc[VKILL],
	(char*)&tmode.c_cc[VINTR],
	(char*)&tmode.c_cc[VQUIT],
	(char*)&tmode.c_cc[VSTART],
	(char*)&tmode.c_cc[VSTOP],
	(char*)&tmode.c_cc[VEOF],
	(char*)&tmode.c_cc[VEOL],
	(char*)&tmode.c_cc[VSUSP],
	(char*)&tmode.c_cc[VDSUSP],
	(char*)&tmode.c_cc[VREPRINT],
	(char*)&tmode.c_cc[VDISCARD],
	(char*)&tmode.c_cc[VWERASE],
	(char*)&tmode.c_cc[VLNEXT],
	0
};

void
setchars(void)
{
	int i;
	const char *p;

	for (i = 0; charnames[i]; i++) {
		p = *charnames[i];
		if (p && *p)
			*charvars[i] = *p;
		else
			*charvars[i] = _POSIX_VDISABLE;
	}
}

/* Macros to clear/set/test flags. */
#define	SET(t, f)	(t) |= (f)
#define	CLR(t, f)	(t) &= ~(f)
#define	ISSET(t, f)	((t) & (f))

void
set_flags(int n)
{
	tcflag_t iflag, oflag, cflag, lflag;


	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 = omode.c_iflag;
	oflag = omode.c_oflag;
	cflag = omode.c_cflag;
	lflag = omode.c_lflag;

	if (NP) {
		CLR(cflag, CSIZE|PARENB);
		SET(cflag, CS8);
		CLR(iflag, ISTRIP|INPCK|IGNPAR);
	} else if (AP || EP || OP) {
		CLR(cflag, CSIZE);
		SET(cflag, CS7|PARENB);
		SET(iflag, ISTRIP);
		if (OP && !EP) {
			SET(iflag, INPCK|IGNPAR);
			SET(cflag, PARODD);
			if (AP)
				CLR(iflag, INPCK);
		} else if (EP && !OP) {
			SET(iflag, INPCK|IGNPAR);
			CLR(cflag, PARODD);
			if (AP)
				CLR(iflag, INPCK);
		} else if (AP || (EP && OP)) {
			CLR(iflag, INPCK|IGNPAR);
			CLR(cflag, PARODD);
		}
	} /* else, leave as is */

#if 0
	if (UC)
		f |= LCASE;
#endif

	if (HC)
		SET(cflag, HUPCL);
	else
		CLR(cflag, HUPCL);

	if (MB)
		SET(cflag, MDMBUF);
	else
		CLR(cflag, MDMBUF);

	if (HW)
		SET(cflag, CRTSCTS);
	else
		CLR(cflag, CRTSCTS);

	if (NL) {
		SET(iflag, ICRNL);
		SET(oflag, ONLCR|OPOST);
	} else {
		CLR(iflag, ICRNL);
		CLR(oflag, ONLCR);
	}

	if (!HT)
		SET(oflag, OXTABS|OPOST);
	else
		CLR(oflag, OXTABS);

#ifdef XXX_DELAY
	SET(f, delaybits());
#endif

	if (n == 1) {		/* read mode flags */
		if (RW) {
			iflag = 0;
			CLR(oflag, OPOST);
			CLR(cflag, CSIZE|PARENB);
			SET(cflag, CS8);
			lflag = 0;
		} else {
			CLR(lflag, ICANON);
		}
		goto out;
	}

	if (n == 0)
		goto out;

#if 0
	if (CB)
		SET(f, CRTBS);
#endif

	if (CE)
		SET(lflag, ECHOE);
	else
		CLR(lflag, ECHOE);

	if (CK)
		SET(lflag, ECHOKE);
	else
		CLR(lflag, ECHOKE);

	if (PE)
		SET(lflag, ECHOPRT);
	else
		CLR(lflag, ECHOPRT);

	if (EC)
		SET(lflag, ECHO);
	else
		CLR(lflag, ECHO);

	if (XC)
		SET(lflag, ECHOCTL);
	else
		CLR(lflag, ECHOCTL);

	if (DX)
		SET(lflag, IXANY);
	else
		CLR(lflag, IXANY);

out:
	tmode.c_iflag = iflag;
	tmode.c_oflag = oflag;
	tmode.c_cflag = cflag;
	tmode.c_lflag = lflag;
}


#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 },
};

int
delaybits(void)
{
	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(int ms, struct delayval *dp)
{
	if (ms == 0)
		return (0);
	while (dp->delay && ms > dp->delay)
		dp++;
	return (dp->bits);
}
#endif

char	editedhost[MAXHOSTNAMELEN];

void
edithost(const char *pat)
{
	const char *host = HN;
	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';
}

static 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 },
	{ 230400, B230400 },
	{ 0 }
};

int
speed(int val)
{
	struct speedtab *sp;

	if (val <= B230400)
		return (val);

	for (sp = speedtab; sp->speed; sp++)
		if (sp->speed == val)
			return (sp->uxname);

	return (B300);		/* default in impossible cases */
}

void
makeenv(char *env[])
{
	static char termbuf[128] = "TERM=";
	char *p, *q;
	char **ep;

	ep = env;
	if (TT && *TT) {
		strlcat(termbuf, TT, sizeof(termbuf));
		*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 {
	const char	*ps_baud;
	const 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 }
};

const char *
portselector(void)
{
	char c, baud[20];
	const char *type = "default";
	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.
 */
const char *
autobaud(void)
{
	int rfds;
	struct timeval timeout;
	char c;
	const char *type = "9600-baud";

	(void)tcflush(0, TCIOFLUSH);
	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);
	(void)tcflush(0, TCIOFLUSH);
	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);
}
Commit	Line	Data
1815bff5 A	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
34d340d7 A	35	#if 0
	36	static char sccsid[] = "@(#)from: subr.c 8.1 (Berkeley) 6/4/93";
	37	#endif
	38	static const char rcsid[] =
	39	"$FreeBSD: src/libexec/getty/subr.c,v 1.19 2004/06/25 10:11:28 phk Exp $";
1815bff5 A	40	#endif /* not lint */
	41
	42	/*
	43	* Melbourne getty.
	44	*/
34d340d7 A	45	#ifdef DEBUG
	46	#include <stdio.h>
	47	#endif
1815bff5	48	#include <stdlib.h>
1815bff5 A	49	#include <string.h>
1815bff5 A	50	#include <termios.h>
34d340d7	51	#include <unistd.h>
1815bff5	52	#include <sys/ioctl.h>
34d340d7 A	53	#include <sys/param.h>
	54	#include <sys/time.h>
	55	#include <syslog.h>
1815bff5 A	56
	57	#include "gettytab.h"
	58	#include "pathnames.h"
	59	#include "extern.h"
	60
1815bff5	61
1815bff5 A	62
	63	/*
	64	* Get a table entry.
	65	*/
	66	void
34d340d7	67	gettable(const char name, char buf)
1815bff5	68	{
34d340d7 A	69	struct gettystrs *sp;
	70	struct gettynums *np;
	71	struct gettyflags *fp;
1815bff5	72	long n;
34d340d7 A	73	int l;
	74	char *p;
	75	char *msg = NULL;
	76	const char *dba[2];
	77
	78	static int firsttime = 1;
	79
1815bff5 A	80	dba[0] = _PATH_GETTYTAB;
	81	dba[1] = 0;
	82
34d340d7 A	83	if (firsttime) {
	84	/*
	85	* we need to strdup() anything in the strings array
	86	* initially in order to simplify things later
	87	*/
	88	for (sp = gettystrs; sp->field; sp++)
	89	if (sp->value != NULL) {
	90	/* handle these ones more carefully */
	91	if (sp >= &gettystrs[4] && sp <= &gettystrs[6])
	92	l = 2;
	93	else
	94	l = strlen(sp->value) + 1;
	95	if ((p = malloc(l)) != NULL) {
	96	strncpy(p, sp->value, l);
	97	p[l-1] = '\0';
	98	}
	99	/*
	100	* replace, even if NULL, else we'll
	101	* have problems with free()ing static mem
	102	*/
	103	sp->value = p;
	104	}
	105	firsttime = 0;
	106	}
	107
	108	switch (cgetent(&buf, (char *)dba, (char )name)) {
	109	case 1:
	110	msg = "%s: couldn't resolve 'tc=' in gettytab '%s'";
	111	case 0:
	112	break;
	113	case -1:
	114	msg = "%s: unknown gettytab entry '%s'";
	115	break;
	116	case -2:
	117	msg = "%s: retrieving gettytab entry '%s': %m";
	118	break;
	119	case -3:
	120	msg = "%s: recursive 'tc=' reference gettytab entry '%s'";
	121	break;
	122	default:
	123	msg = "%s: unexpected cgetent() error for entry '%s'";
	124	break;
	125	}
	126
	127	if (msg != NULL) {
	128	syslog(LOG_ERR, msg, "getty", name);
1815bff5	129	return;
34d340d7 A	130	}
	131
	132	for (sp = gettystrs; sp->field; sp++) {
	133	if ((l = cgetstr(buf, (char*)sp->field, &p)) >= 0) {
	134	if (sp->value) {
	135	/* prefer existing value */
	136	if (strcmp(p, sp->value) != 0)
	137	free(sp->value);
	138	else {
	139	free(p);
	140	p = sp->value;
	141	}
	142	}
	143	sp->value = p;
	144	} else if (l == -1) {
	145	free(sp->value);
	146	sp->value = NULL;
	147	}
	148	}
1815bff5	149
1815bff5	150	for (np = gettynums; np->field; np++) {
34d340d7	151	if (cgetnum(buf, (char*)np->field, &n) == -1)
1815bff5 A	152	np->set = 0;
	153	else {
	154	np->set = 1;
	155	np->value = n;
	156	}
	157	}
34d340d7	158
1815bff5	159	for (fp = gettyflags; fp->field; fp++) {
34d340d7	160	if (cgetcap(buf, (char *)fp->field, ':') == NULL)
1815bff5 A	161	fp->set = 0;
	162	else {
	163	fp->set = 1;
	164	fp->value = 1 ^ fp->invrt;
	165	}
	166	}
34d340d7	167
1815bff5	168	#ifdef DEBUG
34d340d7	169	printf("name=\"%s\", buf=\"%s\"\r\n", name, buf);
1815bff5	170	for (sp = gettystrs; sp->field; sp++)
34d340d7	171	printf("cgetstr: %s=%s\r\n", sp->field, sp->value);
1815bff5	172	for (np = gettynums; np->field; np++)
34d340d7	173	printf("cgetnum: %s=%d\r\n", np->field, np->value);
1815bff5	174	for (fp = gettyflags; fp->field; fp++)
34d340d7	175	printf("cgetflags: %s='%c' set='%c'\r\n", fp->field,
1815bff5	176	fp->value + '0', fp->set + '0');
1815bff5 A	177	#endif /* DEBUG */
	178	}
	179
	180	void
34d340d7	181	gendefaults(void)
1815bff5	182	{
34d340d7 A	183	struct gettystrs *sp;
	184	struct gettynums *np;
	185	struct gettyflags *fp;
1815bff5 A	186
	187	for (sp = gettystrs; sp->field; sp++)
	188	if (sp->value)
34d340d7	189	sp->defalt = strdup(sp->value);
1815bff5 A	190	for (np = gettynums; np->field; np++)
	191	if (np->set)
	192	np->defalt = np->value;
	193	for (fp = gettyflags; fp->field; fp++)
	194	if (fp->set)
	195	fp->defalt = fp->value;
	196	else
	197	fp->defalt = fp->invrt;
	198	}
	199
	200	void
34d340d7	201	setdefaults(void)
1815bff5	202	{
34d340d7 A	203	struct gettystrs *sp;
	204	struct gettynums *np;
	205	struct gettyflags *fp;
1815bff5 A	206
	207	for (sp = gettystrs; sp->field; sp++)
	208	if (!sp->value)
34d340d7 A	209	sp->value = !sp->defalt ? sp->defalt
34d340d7 A	210	: strdup(sp->defalt);
1815bff5 A	211	for (np = gettynums; np->field; np++)
	212	if (!np->set)
	213	np->value = np->defalt;
	214	for (fp = gettyflags; fp->field; fp++)
	215	if (!fp->set)
	216	fp->value = fp->defalt;
	217	}
	218
	219	static char **
	220	charnames[] = {
	221	&ER, &KL, &IN, &QU, &XN, &XF, &ET, &BK,
	222	&SU, &DS, &RP, &FL, &WE, &LN, 0
	223	};
	224
	225	static char *
	226	charvars[] = {
34d340d7 A	227	(char*)&tmode.c_cc[VERASE],
	228	(char*)&tmode.c_cc[VKILL],
	229	(char*)&tmode.c_cc[VINTR],
	230	(char*)&tmode.c_cc[VQUIT],
	231	(char*)&tmode.c_cc[VSTART],
	232	(char*)&tmode.c_cc[VSTOP],
	233	(char*)&tmode.c_cc[VEOF],
	234	(char*)&tmode.c_cc[VEOL],
	235	(char*)&tmode.c_cc[VSUSP],
	236	(char*)&tmode.c_cc[VDSUSP],
	237	(char*)&tmode.c_cc[VREPRINT],
	238	(char*)&tmode.c_cc[VDISCARD],
	239	(char*)&tmode.c_cc[VWERASE],
	240	(char*)&tmode.c_cc[VLNEXT],
	241	0
1815bff5 A	242	};
	243
	244	void
34d340d7	245	setchars(void)
1815bff5	246	{
34d340d7 A	247	int i;
34d340d7 A	248	const char *p;
1815bff5 A	249
	250	for (i = 0; charnames[i]; i++) {
	251	p = *charnames[i];
	252	if (p && *p)
	253	charvars[i] = p;
	254	else
	255	*charvars[i] = _POSIX_VDISABLE;
	256	}
	257	}
	258
34d340d7 A	259	/* Macros to clear/set/test flags. */
	260	#define SET(t, f) (t) \|= (f)
	261	#define CLR(t, f) (t) &= ~(f)
	262	#define ISSET(t, f) ((t) & (f))
	263
1815bff5	264	void
34d340d7	265	set_flags(int n)
1815bff5	266	{
34d340d7	267	tcflag_t iflag, oflag, cflag, lflag;
1815bff5	268
1815bff5 A	269
	270	switch (n) {
	271	case 0:
	272	if (C0set && I0set && L0set && O0set) {
	273	tmode.c_cflag = C0;
	274	tmode.c_iflag = I0;
	275	tmode.c_lflag = L0;
	276	tmode.c_oflag = O0;
	277	return;
	278	}
	279	break;
	280	case 1:
	281	if (C1set && I1set && L1set && O1set) {
	282	tmode.c_cflag = C1;
	283	tmode.c_iflag = I1;
	284	tmode.c_lflag = L1;
	285	tmode.c_oflag = O1;
	286	return;
	287	}
	288	break;
	289	default:
	290	if (C2set && I2set && L2set && O2set) {
	291	tmode.c_cflag = C2;
	292	tmode.c_iflag = I2;
	293	tmode.c_lflag = L2;
	294	tmode.c_oflag = O2;
	295	return;
	296	}
	297	break;
	298	}
	299
1815bff5 A	300	iflag = omode.c_iflag;
	301	oflag = omode.c_oflag;
	302	cflag = omode.c_cflag;
	303	lflag = omode.c_lflag;
	304
	305	if (NP) {
34d340d7 A	306	CLR(cflag, CSIZE\|PARENB);
	307	SET(cflag, CS8);
	308	CLR(iflag, ISTRIP\|INPCK\|IGNPAR);
	309	} else if (AP \|\| EP \|\| OP) {
	310	CLR(cflag, CSIZE);
	311	SET(cflag, CS7\|PARENB);
	312	SET(iflag, ISTRIP);
	313	if (OP && !EP) {
	314	SET(iflag, INPCK\|IGNPAR);
	315	SET(cflag, PARODD);
	316	if (AP)
	317	CLR(iflag, INPCK);
	318	} else if (EP && !OP) {
	319	SET(iflag, INPCK\|IGNPAR);
	320	CLR(cflag, PARODD);
	321	if (AP)
	322	CLR(iflag, INPCK);
	323	} else if (AP \|\| (EP && OP)) {
	324	CLR(iflag, INPCK\|IGNPAR);
	325	CLR(cflag, PARODD);
	326	}
1815bff5 A	327	} /* else, leave as is */
	328
	329	#if 0
	330	if (UC)
	331	f \|= LCASE;
	332	#endif
	333
	334	if (HC)
34d340d7 A	335	SET(cflag, HUPCL);
	336	else
	337	CLR(cflag, HUPCL);
	338
	339	if (MB)
	340	SET(cflag, MDMBUF);
	341	else
	342	CLR(cflag, MDMBUF);
	343
	344	if (HW)
	345	SET(cflag, CRTSCTS);
1815bff5	346	else
34d340d7	347	CLR(cflag, CRTSCTS);
1815bff5 A	348
1815bff5 A	349	if (NL) {
34d340d7 A	350	SET(iflag, ICRNL);
	351	SET(oflag, ONLCR\|OPOST);
	352	} else {
	353	CLR(iflag, ICRNL);
	354	CLR(oflag, ONLCR);
1815bff5 A	355	}
1815bff5 A	356
34d340d7 A	357	if (!HT)
	358	SET(oflag, OXTABS\|OPOST);
	359	else
	360	CLR(oflag, OXTABS);
	361
1815bff5	362	#ifdef XXX_DELAY
34d340d7	363	SET(f, delaybits());
1815bff5 A	364	#endif
	365
	366	if (n == 1) { /* read mode flags */
	367	if (RW) {
	368	iflag = 0;
34d340d7 A	369	CLR(oflag, OPOST);
	370	CLR(cflag, CSIZE\|PARENB);
	371	SET(cflag, CS8);
1815bff5 A	372	lflag = 0;
1815bff5 A	373	} else {
34d340d7	374	CLR(lflag, ICANON);
1815bff5 A	375	}
	376	goto out;
	377	}
	378
1815bff5 A	379	if (n == 0)
	380	goto out;
	381
	382	#if 0
	383	if (CB)
34d340d7	384	SET(f, CRTBS);
1815bff5 A	385	#endif
	386
	387	if (CE)
34d340d7 A	388	SET(lflag, ECHOE);
	389	else
	390	CLR(lflag, ECHOE);
1815bff5 A	391
1815bff5 A	392	if (CK)
34d340d7 A	393	SET(lflag, ECHOKE);
	394	else
	395	CLR(lflag, ECHOKE);
1815bff5 A	396
1815bff5 A	397	if (PE)
34d340d7 A	398	SET(lflag, ECHOPRT);
	399	else
	400	CLR(lflag, ECHOPRT);
1815bff5 A	401
1815bff5 A	402	if (EC)
34d340d7 A	403	SET(lflag, ECHO);
	404	else
	405	CLR(lflag, ECHO);
1815bff5 A	406
1815bff5 A	407	if (XC)
34d340d7 A	408	SET(lflag, ECHOCTL);
	409	else
	410	CLR(lflag, ECHOCTL);
1815bff5 A	411
1815bff5 A	412	if (DX)
34d340d7	413	SET(lflag, IXANY);
1815bff5	414	else
34d340d7	415	CLR(lflag, IXANY);
1815bff5 A	416
	417	out:
	418	tmode.c_iflag = iflag;
	419	tmode.c_oflag = oflag;
	420	tmode.c_cflag = cflag;
	421	tmode.c_lflag = lflag;
	422	}
	423
1815bff5 A	424
	425	#ifdef XXX_DELAY
	426	struct delayval {
	427	unsigned delay; /* delay in ms */
	428	int bits;
	429	};
	430
	431	/*
	432	* below are random guesses, I can't be bothered checking
	433	*/
	434
	435	struct delayval crdelay[] = {
	436	{ 1, CR1 },
	437	{ 2, CR2 },
	438	{ 3, CR3 },
	439	{ 83, CR1 },
	440	{ 166, CR2 },
	441	{ 0, CR3 },
	442	};
	443
	444	struct delayval nldelay[] = {
	445	{ 1, NL1 }, /* special, calculated */
	446	{ 2, NL2 },
	447	{ 3, NL3 },
	448	{ 100, NL2 },
	449	{ 0, NL3 },
	450	};
	451
	452	struct delayval bsdelay[] = {
	453	{ 1, BS1 },
	454	{ 0, 0 },
	455	};
	456
	457	struct delayval ffdelay[] = {
	458	{ 1, FF1 },
	459	{ 1750, FF1 },
	460	{ 0, FF1 },
	461	};
	462
	463	struct delayval tbdelay[] = {
34d340d7 A	464	{ 1, TAB1 },
34d340d7 A	465	{ 2, TAB2 },
1815bff5	466	{ 3, XTABS }, /* this is expand tabs */
34d340d7 A	467	{ 100, TAB1 },
34d340d7 A	468	{ 0, TAB2 },
1815bff5 A	469	};
	470
	471	int
34d340d7	472	delaybits(void)
1815bff5	473	{
34d340d7	474	int f;
1815bff5 A	475
	476	f = adelay(CD, crdelay);
	477	f \|= adelay(ND, nldelay);
	478	f \|= adelay(FD, ffdelay);
	479	f \|= adelay(TD, tbdelay);
	480	f \|= adelay(BD, bsdelay);
	481	return (f);
	482	}
	483
	484	int
34d340d7	485	adelay(int ms, struct delayval *dp)
1815bff5 A	486	{
	487	if (ms == 0)
	488	return (0);
	489	while (dp->delay && ms > dp->delay)
	490	dp++;
	491	return (dp->bits);
	492	}
	493	#endif
	494
34d340d7	495	char editedhost[MAXHOSTNAMELEN];
1815bff5 A	496
1815bff5 A	497	void
34d340d7	498	edithost(const char *pat)
1815bff5	499	{
34d340d7 A	500	const char *host = HN;
34d340d7 A	501	char *res = editedhost;
1815bff5 A	502
	503	if (!pat)
	504	pat = "";
	505	while (*pat) {
	506	switch (*pat) {
	507
	508	case '#':
	509	if (*host)
	510	host++;
	511	break;
	512
	513	case '@':
	514	if (*host)
	515	res++ = host++;
	516	break;
	517
	518	default:
	519	res++ = pat;
	520	break;
	521
	522	}
	523	if (res == &editedhost[sizeof editedhost - 1]) {
	524	*res = '\0';
	525	return;
	526	}
	527	pat++;
	528	}
	529	if (*host)
	530	strncpy(res, host, sizeof editedhost - (res - editedhost) - 1);
	531	else
	532	*res = '\0';
	533	editedhost[sizeof editedhost - 1] = '\0';
	534	}
	535
34d340d7 A	536	static struct speedtab {
	537	int speed;
	538	int uxname;
	539	} speedtab[] = {
	540	{ 50, B50 },
	541	{ 75, B75 },
	542	{ 110, B110 },
	543	{ 134, B134 },
	544	{ 150, B150 },
	545	{ 200, B200 },
	546	{ 300, B300 },
	547	{ 600, B600 },
	548	{ 1200, B1200 },
	549	{ 1800, B1800 },
	550	{ 2400, B2400 },
	551	{ 4800, B4800 },
	552	{ 9600, B9600 },
	553	{ 19200, EXTA },
	554	{ 19, EXTA }, /* for people who say 19.2K */
	555	{ 38400, EXTB },
	556	{ 38, EXTB },
	557	{ 7200, EXTB }, /* alternative */
	558	{ 57600, B57600 },
	559	{ 115200, B115200 },
	560	{ 230400, B230400 },
	561	{ 0 }
	562	};
	563
	564	int
	565	speed(int val)
	566	{
	567	struct speedtab *sp;
	568
	569	if (val <= B230400)
	570	return (val);
	571
	572	for (sp = speedtab; sp->speed; sp++)
	573	if (sp->speed == val)
	574	return (sp->uxname);
	575
	576	return (B300); /* default in impossible cases */
	577	}
	578
1815bff5	579	void
34d340d7	580	makeenv(char *env[])
1815bff5 A	581	{
1815bff5 A	582	static char termbuf[128] = "TERM=";
34d340d7 A	583	char p, q;
34d340d7 A	584	char **ep;
1815bff5 A	585
	586	ep = env;
	587	if (TT && *TT) {
34d340d7	588	strlcat(termbuf, TT, sizeof(termbuf));
1815bff5 A	589	*ep++ = termbuf;
1815bff5 A	590	}
34d340d7	591	if ((p = EV)) {
1815bff5	592	q = p;
34d340d7	593	while ((q = strchr(q, ','))) {
1815bff5 A	594	*q++ = '\0';
	595	*ep++ = p;
	596	p = q;
	597	}
	598	if (*p)
	599	*ep++ = p;
	600	}
	601	ep = (char )0;
	602	}
	603
	604	/*
	605	* This speed select mechanism is written for the Develcon DATASWITCH.
	606	* The Develcon sends a string of the form "B{speed}\n" at a predefined
	607	* baud rate. This string indicates the user's actual speed.
	608	* The routine below returns the terminal type mapped from derived speed.
	609	*/
	610	struct portselect {
34d340d7 A	611	const char *ps_baud;
34d340d7 A	612	const char *ps_type;
1815bff5 A	613	} portspeeds[] = {
	614	{ "B110", "std.110" },
	615	{ "B134", "std.134" },
	616	{ "B150", "std.150" },
	617	{ "B300", "std.300" },
	618	{ "B600", "std.600" },
	619	{ "B1200", "std.1200" },
	620	{ "B2400", "std.2400" },
	621	{ "B4800", "std.4800" },
	622	{ "B9600", "std.9600" },
	623	{ "B19200", "std.19200" },
	624	{ 0 }
	625	};
	626
34d340d7 A	627	const char *
34d340d7 A	628	portselector(void)
1815bff5	629	{
34d340d7 A	630	char c, baud[20];
	631	const char *type = "default";
	632	struct portselect *ps;
1815bff5 A	633	int len;
	634
	635	alarm(5*60);
	636	for (len = 0; len < sizeof (baud) - 1; len++) {
	637	if (read(STDIN_FILENO, &c, 1) <= 0)
	638	break;
	639	c &= 0177;
	640	if (c == '\n' \|\| c == '\r')
	641	break;
	642	if (c == 'B')
	643	len = 0; /* in case of leading garbage */
	644	baud[len] = c;
	645	}
	646	baud[len] = '\0';
	647	for (ps = portspeeds; ps->ps_baud; ps++)
	648	if (strcmp(ps->ps_baud, baud) == 0) {
	649	type = ps->ps_type;
	650	break;
	651	}
	652	sleep(2); /* wait for connection to complete */
	653	return (type);
	654	}
	655
	656	/*
	657	* This auto-baud speed select mechanism is written for the Micom 600
	658	* portselector. Selection is done by looking at how the character '\r'
	659	* is garbled at the different speeds.
	660	*/
34d340d7 A	661	const char *
34d340d7 A	662	autobaud(void)
1815bff5 A	663	{
	664	int rfds;
	665	struct timeval timeout;
34d340d7 A	666	char c;
34d340d7 A	667	const char *type = "9600-baud";
1815bff5	668
34d340d7	669	(void)tcflush(0, TCIOFLUSH);
1815bff5 A	670	rfds = 1 << 0;
	671	timeout.tv_sec = 5;
	672	timeout.tv_usec = 0;
	673	if (select(32, (fd_set )&rfds, (fd_set )NULL,
	674	(fd_set *)NULL, &timeout) <= 0)
	675	return (type);
	676	if (read(STDIN_FILENO, &c, sizeof(char)) != sizeof(char))
	677	return (type);
	678	timeout.tv_sec = 0;
	679	timeout.tv_usec = 20;
	680	(void) select(32, (fd_set )NULL, (fd_set )NULL,
	681	(fd_set *)NULL, &timeout);
34d340d7	682	(void)tcflush(0, TCIOFLUSH);
1815bff5 A	683	switch (c & 0377) {
	684
	685	case 0200: /* 300-baud */
	686	type = "300-baud";
	687	break;
	688
	689	case 0346: /* 1200-baud */
	690	type = "1200-baud";
	691	break;
	692
	693	case 015: /* 2400-baud */
	694	case 0215:
	695	type = "2400-baud";
	696	break;
	697
	698	default: /* 4800-baud */
	699	type = "4800-baud";
	700	break;
	701
	702	case 0377: /* 9600-baud */
	703	type = "9600-baud";
	704	break;
	705	}
	706	return (type);
	707	}