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key.c revision 1.19 
      1 /* $NetBSD: key.c,v 1.19 2003/08/07 09:05:41 agc Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 1991, 1993, 1994
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. Neither the name of the University nor the names of its contributors
     16  *    may be used to endorse or promote products derived from this software
     17  *    without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     29  * SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 #ifndef lint
     34 #if 0
     35 static char sccsid[] = "@(#)key.c	8.4 (Berkeley) 2/20/95";
     36 #else
     37 __RCSID("$NetBSD: key.c,v 1.19 2003/08/07 09:05:41 agc Exp $");
     38 #endif
     39 #endif /* not lint */
     40 
     41 #include <sys/types.h>
     42 
     43 #include <err.h>
     44 #include <errno.h>
     45 #include <stdlib.h>
     46 #include <stdio.h>
     47 #include <string.h>
     48 
     49 #include "stty.h"
     50 #include "extern.h"
     51 
     52 __BEGIN_DECLS
     53 void	f_all(struct info *);
     54 void	f_cbreak(struct info *);
     55 void	f_columns(struct info *);
     56 void	f_dec(struct info *);
     57 void	f_everything(struct info *);
     58 void	f_extproc(struct info *);
     59 void	f_ispeed(struct info *);
     60 void	f_nl(struct info *);
     61 void	f_ospeed(struct info *);
     62 void	f_raw(struct info *);
     63 void	f_rows(struct info *);
     64 void	f_sane(struct info *);
     65 void	f_size(struct info *);
     66 void	f_speed(struct info *);
     67 void	f_ostart(struct info *);
     68 void	f_ostop(struct info *);
     69 void	f_tty(struct info *);
     70 __END_DECLS
     71 
     72 static const struct key {
     73 	const char *name;			/* name */
     74 	void (*f)(struct info *);		/* function */
     75 #define	F_NEEDARG	0x01			/* needs an argument */
     76 #define	F_OFFOK		0x02			/* can turn off */
     77 	int flags;
     78 } keys[] = {
     79 	{ "all",	f_all,		0 },
     80 	{ "cbreak",	f_cbreak,	F_OFFOK },
     81 	{ "cols",	f_columns,	F_NEEDARG },
     82 	{ "columns",	f_columns,	F_NEEDARG },
     83 	{ "cooked", 	f_sane,		0 },
     84 	{ "dec",	f_dec,		0 },
     85 	{ "everything",	f_everything,	0 },
     86 	{ "extproc",	f_extproc,	F_OFFOK },
     87 	{ "ispeed",	f_ispeed,	F_NEEDARG },
     88 	{ "new",	f_tty,		0 },
     89 	{ "nl",		f_nl,		F_OFFOK },
     90 	{ "old",	f_tty,		0 },
     91 	{ "ospeed",	f_ospeed,	F_NEEDARG },
     92 	{ "ostart",	f_ostart,	0 },
     93 	{ "ostop",	f_ostop,	0 },
     94 	{ "raw",	f_raw,		F_OFFOK },
     95 	{ "rows",	f_rows,		F_NEEDARG },
     96 	{ "sane",	f_sane,		0 },
     97 	{ "size",	f_size,		0 },
     98 	{ "speed",	f_speed,	0 },
     99 	{ "tty",	f_tty,		0 },
    100 };
    101 
    102 static int c_key(const void *, const void *);
    103 
    104 static int
    105 c_key(const void *a, const void *b)
    106 {
    107 
    108         return (strcmp(((const struct key *)a)->name,
    109 	    ((const struct key *)b)->name));
    110 }
    111 
    112 int
    113 ksearch(char ***argvp, struct info *ip)
    114 {
    115 	char *name;
    116 	struct key *kp, tmp;
    117 
    118 	name = **argvp;
    119 	if (*name == '-') {
    120 		ip->off = 1;
    121 		++name;
    122 	} else
    123 		ip->off = 0;
    124 
    125 	tmp.name = name;
    126 	if (!(kp = (struct key *)bsearch(&tmp, keys,
    127 	    sizeof(keys)/sizeof(struct key), sizeof(struct key), c_key)))
    128 		return (0);
    129 	if (!(kp->flags & F_OFFOK) && ip->off) {
    130 		warnx("illegal option -- %s", name);
    131 		usage();
    132 	}
    133 	if (kp->flags & F_NEEDARG && !(ip->arg = *++*argvp)) {
    134 		warnx("option requires an argument -- %s", name);
    135 		usage();
    136 	}
    137 	kp->f(ip);
    138 	return (1);
    139 }
    140 
    141 void
    142 f_all(struct info *ip)
    143 {
    144 	print(&ip->t, &ip->win, ip->ldisc, STTY_BSD);
    145 }
    146 
    147 void
    148 f_cbreak(struct info *ip)
    149 {
    150 	if (ip->off)
    151 		f_sane(ip);
    152 	else {
    153 		ip->t.c_iflag |= BRKINT|IXON|IMAXBEL;
    154 		ip->t.c_oflag |= OPOST;
    155 		ip->t.c_lflag |= ISIG|IEXTEN;
    156 		ip->t.c_lflag &= ~ICANON;
    157 		ip->set = 1;
    158 	}
    159 }
    160 
    161 void
    162 f_columns(struct info *ip)
    163 {
    164 	ip->win.ws_col = atoi(ip->arg);
    165 	ip->wset = 1;
    166 }
    167 
    168 void
    169 f_dec(struct info *ip)
    170 {
    171 	ip->t.c_cc[VERASE] = (u_char)0177;
    172 	ip->t.c_cc[VKILL] = CTRL('u');
    173 	ip->t.c_cc[VINTR] = CTRL('c');
    174 	ip->t.c_lflag &= ~ECHOPRT;
    175 	ip->t.c_lflag |= ECHOE|ECHOKE|ECHOCTL;
    176 	ip->t.c_iflag &= ~IXANY;
    177 	ip->set = 1;
    178 }
    179 
    180 void
    181 f_everything(struct info *ip)
    182 {
    183 	print(&ip->t, &ip->win, ip->ldisc, STTY_BSD);
    184 }
    185 
    186 void
    187 f_extproc(struct info *ip)
    188 {
    189 #ifdef TIOCEXT
    190 	if (ip->off) {
    191 		int tmp = 0;
    192 		(void)ioctl(ip->fd, TIOCEXT, &tmp);
    193 	} else {
    194 		int tmp = 1;
    195 		(void)ioctl(ip->fd, TIOCEXT, &tmp);
    196 	}
    197 	ip->set = 1;
    198 #endif
    199 }
    200 
    201 void
    202 f_ispeed(struct info *ip)
    203 {
    204 	cfsetispeed(&ip->t, atoi(ip->arg));
    205 	ip->set = 1;
    206 }
    207 
    208 void
    209 f_nl(struct info *ip)
    210 {
    211 	if (ip->off) {
    212 		ip->t.c_iflag |= ICRNL;
    213 		ip->t.c_oflag |= ONLCR;
    214 	} else {
    215 		ip->t.c_iflag &= ~ICRNL;
    216 		ip->t.c_oflag &= ~ONLCR;
    217 	}
    218 	ip->set = 1;
    219 }
    220 
    221 void
    222 f_ospeed(struct info *ip)
    223 {
    224 	cfsetospeed(&ip->t, atoi(ip->arg));
    225 	ip->set = 1;
    226 }
    227 
    228 void
    229 f_raw(struct info *ip)
    230 {
    231 	if (ip->off)
    232 		f_sane(ip);
    233 	else {
    234 		cfmakeraw(&ip->t);
    235 		ip->t.c_cflag &= ~(CSIZE|PARENB);
    236 		ip->t.c_cflag |= CS8;
    237 		ip->set = 1;
    238 	}
    239 }
    240 
    241 void
    242 f_rows(struct info *ip)
    243 {
    244 	ip->win.ws_row = atoi(ip->arg);
    245 	ip->wset = 1;
    246 }
    247 
    248 void
    249 f_sane(struct info *ip)
    250 {
    251 	ip->t.c_cflag = TTYDEF_CFLAG | (ip->t.c_cflag & (CLOCAL|CRTSCTS|CDTRCTS));
    252 	ip->t.c_iflag = TTYDEF_IFLAG;
    253 	ip->t.c_iflag |= ICRNL;
    254 	/* preserve user-preference flags in lflag */
    255 #define	LKEEP	(ECHOKE|ECHOE|ECHOK|ECHOPRT|ECHOCTL|ALTWERASE|TOSTOP|NOFLSH)
    256 	ip->t.c_lflag = TTYDEF_LFLAG | (ip->t.c_lflag & LKEEP);
    257 	ip->t.c_oflag = TTYDEF_OFLAG;
    258 	ip->set = 1;
    259 }
    260 
    261 void
    262 f_size(struct info *ip)
    263 {
    264 	(void)printf("%d %d\n", ip->win.ws_row, ip->win.ws_col);
    265 }
    266 
    267 void
    268 f_speed(struct info *ip)
    269 {
    270 	(void)printf("%d\n", cfgetospeed(&ip->t));
    271 }
    272 
    273 /* ARGSUSED */
    274 void
    275 f_tty(struct info *ip)
    276 {
    277 #ifdef TTYDISC
    278 	int tmp;
    279 
    280 	tmp = TTYDISC;
    281 	if (ioctl(0, TIOCSETD, &tmp) < 0)
    282 		err(1, "TIOCSETD");
    283 #endif
    284 }
    285 
    286 void
    287 f_ostart(struct info *ip)
    288 {
    289 	if (ioctl (0, TIOCSTART) < 0)
    290 		err(1, "TIOCSTART");
    291 }
    292 
    293 void
    294 f_ostop(struct info *ip)
    295 {
    296 	if (ioctl (0, TIOCSTOP) < 0)
    297 		err(1, "TIOCSTOP");
    298 }
    299