1 /* $OpenBSD: key.c,v 1.18 2019/06/28 13:35:00 deraadt Exp $ */
2 /* $NetBSD: key.c,v 1.11 1995/09/07 06:57:11 jtc Exp $ */
3
4 /*-
5 * Copyright (c) 1991, 1993, 1994
6 * The Regents of the University of California. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33 #include <sys/types.h>
34 #include <sys/ioctl.h>
35
36 #include <err.h>
37 #include <errno.h>
38 #include <limits.h>
39 #include <stdio.h>
40 #include <stdlib.h>
41 #include <string.h>
42 #include <termios.h>
43
44 #include "stty.h"
45 #include "extern.h"
46
47 __BEGIN_DECLS
48 void f_all(struct info *);
49 void f_cbreak(struct info *);
50 void f_columns(struct info *);
51 void f_dec(struct info *);
52 void f_ek(struct info *);
53 void f_everything(struct info *);
54 void f_extproc(struct info *);
55 void f_ispeed(struct info *);
56 void f_lcase(struct info *);
57 void f_nl(struct info *);
58 void f_ospeed(struct info *);
59 void f_raw(struct info *);
60 void f_rows(struct info *);
61 void f_sane(struct info *);
62 void f_size(struct info *);
63 void f_speed(struct info *);
64 void f_ostart(struct info *);
65 void f_ostop(struct info *);
66 void f_tty(struct info *);
67 __END_DECLS
68
69 static struct key {
70 char *name; /* name */
71 void (*f)(struct info *); /* function */
72 #define F_NEEDARG 0x01 /* needs an argument */
73 #define F_OFFOK 0x02 /* can turn off */
74 int flags;
75 } keys[] = {
76 { "all", f_all, 0 },
77 { "cbreak", f_cbreak, F_OFFOK },
78 { "cols", f_columns, F_NEEDARG },
79 { "columns", f_columns, F_NEEDARG },
80 { "cooked", f_sane, 0 },
81 { "dec", f_dec, 0 },
82 { "ek", f_ek, 0 },
83 { "everything", f_everything, 0 },
84 { "extproc", f_extproc, F_OFFOK },
85 { "ispeed", f_ispeed, F_NEEDARG },
86 { "lcase", f_lcase, 0 },
87 { "new", f_tty, 0 },
88 { "nl", f_nl, F_OFFOK },
89 { "old", f_tty, 0 },
90 { "ospeed", f_ospeed, F_NEEDARG },
91 { "ostart", f_ostart, 0 },
92 { "ostop", f_ostop, 0 },
93 { "raw", f_raw, F_OFFOK },
94 { "rows", f_rows, F_NEEDARG },
95 { "sane", f_sane, 0 },
96 { "size", f_size, 0 },
97 { "speed", f_speed, 0 },
98 { "tty", f_tty, 0 },
99 };
100
101 static int
c_key(const void * a,const void * b)102 c_key(const void *a, const void *b)
103 {
104
105 return (strcmp(((struct key *)a)->name, ((struct key *)b)->name));
106 }
107
108 int
ksearch(char *** argvp,struct info * ip)109 ksearch(char ***argvp, struct info *ip)
110 {
111 char *name;
112 struct key *kp, tmp;
113
114 name = **argvp;
115 if (*name == '-') {
116 ip->off = 1;
117 ++name;
118 } else
119 ip->off = 0;
120
121 tmp.name = name;
122 if (!(kp = (struct key *)bsearch(&tmp, keys,
123 sizeof(keys)/sizeof(struct key), sizeof(struct key), c_key)))
124 return (0);
125 if (!(kp->flags & F_OFFOK) && ip->off) {
126 warnx("illegal option -- -%s", name);
127 usage();
128 }
129 if (kp->flags & F_NEEDARG && !(ip->arg = *++*argvp)) {
130 warnx("option requires an argument -- %s", name);
131 usage();
132 }
133 kp->f(ip);
134 return (1);
135 }
136
137 void
f_all(struct info * ip)138 f_all(struct info *ip)
139 {
140 print(&ip->t, &ip->win, ip->ldisc, BSD);
141 }
142
143 void
f_cbreak(struct info * ip)144 f_cbreak(struct info *ip)
145 {
146
147 if (ip->off)
148 f_sane(ip);
149 else {
150 ip->t.c_iflag |= BRKINT|IXON|IMAXBEL;
151 ip->t.c_oflag |= OPOST;
152 ip->t.c_lflag |= ISIG|IEXTEN;
153 ip->t.c_lflag &= ~ICANON;
154 ip->set = 1;
155 }
156 }
157
158 void
f_columns(struct info * ip)159 f_columns(struct info *ip)
160 {
161 const char *error;
162
163 ip->win.ws_col = strtonum(ip->arg, 0, USHRT_MAX, &error);
164 if (error)
165 err(1, "cols %s", ip->arg);
166 ip->wset = 1;
167 }
168
169 void
f_dec(struct info * ip)170 f_dec(struct info *ip)
171 {
172
173 ip->t.c_cc[VERASE] = (u_char)0177;
174 ip->t.c_cc[VKILL] = CTRL('u');
175 ip->t.c_cc[VINTR] = CTRL('c');
176 ip->t.c_lflag &= ~ECHOPRT;
177 ip->t.c_lflag |= ECHOE|ECHOKE|ECHOCTL;
178 ip->t.c_iflag &= ~IXANY;
179 ip->set = 1;
180 }
181
182 void
f_ek(struct info * ip)183 f_ek(struct info *ip)
184 {
185
186 ip->t.c_cc[VERASE] = CERASE;
187 ip->t.c_cc[VKILL] = CKILL;
188 ip->set = 1;
189 }
190
191 void
f_everything(struct info * ip)192 f_everything(struct info *ip)
193 {
194
195 print(&ip->t, &ip->win, ip->ldisc, BSD);
196 }
197
198 void
f_extproc(struct info * ip)199 f_extproc(struct info *ip)
200 {
201
202 if (ip->off) {
203 int tmp = 0;
204 (void)ioctl(ip->fd, TIOCEXT, &tmp);
205 } else {
206 int tmp = 1;
207 (void)ioctl(ip->fd, TIOCEXT, &tmp);
208 }
209 ip->set = 1;
210 }
211
212 void
f_ispeed(struct info * ip)213 f_ispeed(struct info *ip)
214 {
215 const char *errstr;
216 speed_t speed;
217
218 speed = strtonum(ip->arg, 0, UINT_MAX, &errstr);
219 if (errstr)
220 err(1, "ispeed %s", ip->arg);
221 cfsetispeed(&ip->t, speed);
222 ip->set = 1;
223 }
224
225 void
f_lcase(struct info * ip)226 f_lcase(struct info *ip)
227 {
228 if (ip->off) {
229 ip->t.c_iflag &= ~IUCLC;
230 ip->t.c_oflag &= ~OLCUC;
231 ip->t.c_lflag &= ~XCASE;
232 } else {
233 ip->t.c_iflag |= IUCLC;
234 ip->t.c_oflag |= OLCUC;
235 ip->t.c_lflag |= XCASE;
236 }
237 ip->set = 1;
238 }
239
240 void
f_nl(struct info * ip)241 f_nl(struct info *ip)
242 {
243
244 if (ip->off) {
245 ip->t.c_iflag |= ICRNL;
246 ip->t.c_oflag |= ONLCR;
247 } else {
248 ip->t.c_iflag &= ~ICRNL;
249 ip->t.c_oflag &= ~ONLCR;
250 }
251 ip->set = 1;
252 }
253
254 void
f_ospeed(struct info * ip)255 f_ospeed(struct info *ip)
256 {
257 const char *errstr;
258 speed_t speed;
259
260 speed = strtonum(ip->arg, 0, UINT_MAX, &errstr);
261 if (errstr)
262 err(1, "ospeed %s", ip->arg);
263 cfsetospeed(&ip->t, speed);
264 ip->set = 1;
265 }
266
267 void
f_raw(struct info * ip)268 f_raw(struct info *ip)
269 {
270
271 if (ip->off)
272 f_sane(ip);
273 else {
274 cfmakeraw(&ip->t);
275 ip->t.c_cflag &= ~(CSIZE|PARENB);
276 ip->t.c_cflag |= CS8;
277 ip->set = 1;
278 }
279 }
280
281 void
f_rows(struct info * ip)282 f_rows(struct info *ip)
283 {
284 const char *error;
285
286 ip->win.ws_row = strtonum(ip->arg, 0, USHRT_MAX, &error);
287 if (error)
288 err(1, "rows %s", ip->arg);
289 ip->wset = 1;
290 }
291
292 void
f_sane(struct info * ip)293 f_sane(struct info *ip)
294 {
295
296 ip->t.c_cflag = TTYDEF_CFLAG | (ip->t.c_cflag & (CLOCAL|CRTSCTS));
297 ip->t.c_iflag = TTYDEF_IFLAG;
298 ip->t.c_iflag |= ICRNL;
299 /* preserve user-preference flags in lflag */
300 #define LKEEP (ECHOKE|ECHOE|ECHOK|ECHOPRT|ECHOCTL|ALTWERASE|TOSTOP|NOFLSH)
301 ip->t.c_lflag = TTYDEF_LFLAG | (ip->t.c_lflag & LKEEP);
302 ip->t.c_oflag = TTYDEF_OFLAG;
303 ip->set = 1;
304 }
305
306 void
f_size(struct info * ip)307 f_size(struct info *ip)
308 {
309
310 (void)printf("%d %d\n", ip->win.ws_row, ip->win.ws_col);
311 }
312
313 void
f_speed(struct info * ip)314 f_speed(struct info *ip)
315 {
316
317 (void)printf("%d\n", cfgetospeed(&ip->t));
318 }
319
320 void
f_tty(struct info * ip)321 f_tty(struct info *ip)
322 {
323 int tmp;
324
325 tmp = TTYDISC;
326 if (ioctl(ip->fd, TIOCSETD, &tmp) == -1)
327 err(1, "TIOCSETD");
328 }
329
330 void
f_ostart(struct info * ip)331 f_ostart(struct info *ip)
332 {
333 if (ioctl(ip->fd, TIOCSTART) == -1)
334 err(1, "TIOCSTART");
335 }
336
337 void
f_ostop(struct info * ip)338 f_ostop(struct info *ip)
339 {
340 if (ioctl(ip->fd, TIOCSTOP) == -1)
341 err(1, "TIOCSTOP");
342 }
343