xref: /freebsd/bin/stty/key.c (revision 71fe318b852b8dfb3e799cb12ef184750f7f8eac)
1 /*-
2  * Copyright (c) 1991, 1993, 1994
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
35 #if 0
36 static char sccsid[] = "@(#)key.c	8.3 (Berkeley) 4/2/94";
37 #endif
38 #endif /* not lint */
39 #include <sys/cdefs.h>
40 __FBSDID("$FreeBSD$");
41 
42 #include <sys/types.h>
43 
44 #include <err.h>
45 #include <errno.h>
46 #include <stdlib.h>
47 #include <stdio.h>
48 #include <string.h>
49 
50 #include "stty.h"
51 #include "extern.h"
52 
53 __BEGIN_DECLS
54 static int c_key(const void *, const void *);
55 void	f_all(struct info *);
56 void	f_cbreak(struct info *);
57 void	f_columns(struct info *);
58 void	f_dec(struct info *);
59 void	f_ek(struct info *);
60 void	f_everything(struct info *);
61 void	f_extproc(struct info *);
62 void	f_ispeed(struct info *);
63 void	f_nl(struct info *);
64 void	f_ospeed(struct info *);
65 void	f_raw(struct info *);
66 void	f_rows(struct info *);
67 void	f_sane(struct info *);
68 void	f_size(struct info *);
69 void	f_speed(struct info *);
70 void	f_tty(struct info *);
71 __END_DECLS
72 
73 static struct key {
74 	const char *name;			/* name */
75 	void (*f)(struct info *);		/* function */
76 #define	F_NEEDARG	0x01			/* needs an argument */
77 #define	F_OFFOK		0x02			/* can turn off */
78 	int flags;
79 } keys[] = {
80 	{ "all",	f_all,		0 },
81 	{ "cbreak",	f_cbreak,	F_OFFOK },
82 	{ "cols",	f_columns,	F_NEEDARG },
83 	{ "columns",	f_columns,	F_NEEDARG },
84 	{ "cooked", 	f_sane,		0 },
85 	{ "dec",	f_dec,		0 },
86 	{ "ek",		f_ek,		0 },
87 	{ "everything",	f_everything,	0 },
88 	{ "extproc",	f_extproc,	F_OFFOK },
89 	{ "ispeed",	f_ispeed,	F_NEEDARG },
90 	{ "new",	f_tty,		0 },
91 	{ "nl",		f_nl,		F_OFFOK },
92 	{ "old",	f_tty,		0 },
93 	{ "ospeed",	f_ospeed,	F_NEEDARG },
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
103 c_key(const void *a, const void *b)
104 {
105 
106         return (strcmp(((const struct key *)a)->name, ((const struct key *)b)->name));
107 }
108 
109 int
110 ksearch(char ***argvp, struct info *ip)
111 {
112 	char *name;
113 	struct key *kp, tmp;
114 
115 	name = **argvp;
116 	if (*name == '-') {
117 		ip->off = 1;
118 		++name;
119 	} else
120 		ip->off = 0;
121 
122 	tmp.name = name;
123 	if (!(kp = (struct key *)bsearch(&tmp, keys,
124 	    sizeof(keys)/sizeof(struct key), sizeof(struct key), c_key)))
125 		return (0);
126 	if (!(kp->flags & F_OFFOK) && ip->off) {
127 		warnx("illegal option -- -%s", name);
128 		usage();
129 	}
130 	if (kp->flags & F_NEEDARG && !(ip->arg = *++*argvp)) {
131 		warnx("option requires an argument -- %s", name);
132 		usage();
133 	}
134 	kp->f(ip);
135 	return (1);
136 }
137 
138 void
139 f_all(struct info *ip)
140 {
141 	print(&ip->t, &ip->win, ip->ldisc, BSD);
142 }
143 
144 void
145 f_cbreak(struct info *ip)
146 {
147 
148 	if (ip->off)
149 		f_sane(ip);
150 	else {
151 		ip->t.c_iflag |= BRKINT|IXON|IMAXBEL;
152 		ip->t.c_oflag |= OPOST;
153 		ip->t.c_lflag |= ISIG|IEXTEN;
154 		ip->t.c_lflag &= ~ICANON;
155 		ip->set = 1;
156 	}
157 }
158 
159 void
160 f_columns(struct info *ip)
161 {
162 
163 	ip->win.ws_col = atoi(ip->arg);
164 	ip->wset = 1;
165 }
166 
167 void
168 f_dec(struct info *ip)
169 {
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_ek(struct info *ip)
182 {
183 
184 	ip->t.c_cc[VERASE] = CERASE;
185 	ip->t.c_cc[VKILL] = CKILL;
186 	ip->set = 1;
187 }
188 
189 void
190 f_everything(struct info *ip)
191 {
192 
193 	print(&ip->t, &ip->win, ip->ldisc, BSD);
194 }
195 
196 void
197 f_extproc(struct info *ip)
198 {
199 
200 	if (ip->off) {
201 		int tmp = 0;
202 		(void)ioctl(ip->fd, TIOCEXT, &tmp);
203 	} else {
204 		int tmp = 1;
205 		(void)ioctl(ip->fd, TIOCEXT, &tmp);
206 	}
207 }
208 
209 void
210 f_ispeed(struct info *ip)
211 {
212 
213 	cfsetispeed(&ip->t, (speed_t)atoi(ip->arg));
214 	ip->set = 1;
215 }
216 
217 void
218 f_nl(struct info *ip)
219 {
220 
221 	if (ip->off) {
222 		ip->t.c_iflag |= ICRNL;
223 		ip->t.c_oflag |= ONLCR;
224 	} else {
225 		ip->t.c_iflag &= ~ICRNL;
226 		ip->t.c_oflag &= ~ONLCR;
227 	}
228 	ip->set = 1;
229 }
230 
231 void
232 f_ospeed(struct info *ip)
233 {
234 
235 	cfsetospeed(&ip->t, (speed_t)atoi(ip->arg));
236 	ip->set = 1;
237 }
238 
239 void
240 f_raw(struct info *ip)
241 {
242 
243 	if (ip->off)
244 		f_sane(ip);
245 	else {
246 		cfmakeraw(&ip->t);
247 		ip->t.c_cflag &= ~(CSIZE|PARENB);
248 		ip->t.c_cflag |= CS8;
249 		ip->set = 1;
250 	}
251 }
252 
253 void
254 f_rows(struct info *ip)
255 {
256 
257 	ip->win.ws_row = atoi(ip->arg);
258 	ip->wset = 1;
259 }
260 
261 void
262 f_sane(struct info *ip)
263 {
264 
265 	ip->t.c_cflag = TTYDEF_CFLAG | (ip->t.c_cflag & CLOCAL);
266 	ip->t.c_iflag = TTYDEF_IFLAG;
267 	ip->t.c_iflag |= ICRNL;
268 	/* preserve user-preference flags in lflag */
269 #define	LKEEP	(ECHOKE|ECHOE|ECHOK|ECHOPRT|ECHOCTL|ALTWERASE|TOSTOP|NOFLSH)
270 	ip->t.c_lflag = TTYDEF_LFLAG | (ip->t.c_lflag & LKEEP);
271 	ip->t.c_oflag = TTYDEF_OFLAG;
272 	ip->set = 1;
273 }
274 
275 void
276 f_size(struct info *ip)
277 {
278 
279 	(void)printf("%d %d\n", ip->win.ws_row, ip->win.ws_col);
280 }
281 
282 void
283 f_speed(struct info *ip)
284 {
285 
286 	(void)printf("%lu\n", (u_long)cfgetospeed(&ip->t));
287 }
288 
289 void
290 f_tty(struct info *ip)
291 {
292 	int tmp;
293 
294 	tmp = TTYDISC;
295 	if (ioctl(ip->fd, TIOCSETD, &tmp) < 0)
296 		err(1, "TIOCSETD");
297 }
298