1/*	$NetBSD: key.c,v 1.6 2003/08/07 11:25:27 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
35static char sccsid[] = "@(#)key.c	8.3 (Berkeley) 4/2/94";
36#else
37__RCSID("$NetBSD: key.c,v 1.6 2003/08/07 11:25:27 agc Exp $");
38#endif
39#endif /* not lint */
40
41#include <sys/param.h>
42#include <sys/types.h>
43
44#include <errno.h>
45#include <stdlib.h>
46#include <stdio.h>
47#include <string.h>
48#include <syslog.h>
49#include <dirent.h>
50#include <termios.h>
51
52#include "lp.h"
53#include "extern.h"
54
55__BEGIN_DECLS
56static int
57	c_key(const void *, const void *);
58void	f_cbreak(struct info *);
59void	f_columns(struct info *);
60void	f_dec(struct info *);
61void	f_extproc(struct info *);
62void	f_ispeed(struct info *);
63void	f_nl(struct info *);
64void	f_ospeed(struct info *);
65void	f_raw(struct info *);
66void	f_rows(struct info *);
67void	f_sane(struct info *);
68void	f_tty(struct info *);
69__END_DECLS
70
71static struct key {
72	const char *name;			/* name */
73	void (*f)(struct info *);		/* function */
74#define	F_NEEDARG	0x01			/* needs an argument */
75#define	F_OFFOK		0x02			/* can turn off */
76	int flags;
77} const keys[] = {
78	{ "cbreak",	f_cbreak,	F_OFFOK },
79	{ "cols",	f_columns,	F_NEEDARG },
80	{ "columns",	f_columns,	F_NEEDARG },
81	{ "cooked", 	f_sane,		0 },
82	{ "dec",	f_dec,		0 },
83	{ "extproc",	f_extproc,	F_OFFOK },
84	{ "ispeed",	f_ispeed,	F_NEEDARG },
85	{ "new",	f_tty,		0 },
86	{ "nl",		f_nl,		F_OFFOK },
87	{ "old",	f_tty,		0 },
88	{ "ospeed",	f_ospeed,	F_NEEDARG },
89	{ "raw",	f_raw,		F_OFFOK },
90	{ "rows",	f_rows,		F_NEEDARG },
91	{ "sane",	f_sane,		0 },
92	{ "tty",	f_tty,		0 },
93};
94
95static int
96c_key(const void *a, const void *b)
97{
98
99        return (strcmp(((const struct key *)a)->name,
100	    ((const struct key *)b)->name));
101}
102
103int
104ksearch(char ***argvp, struct info *ip)
105{
106	char *name;
107	struct key *kp, tmp;
108
109	name = **argvp;
110	if (*name == '-') {
111		ip->off = 1;
112		++name;
113	} else
114		ip->off = 0;
115
116	tmp.name = name;
117	if (!(kp = (struct key *)bsearch(&tmp, keys,
118	    sizeof(keys)/sizeof(struct key), sizeof(struct key), c_key)))
119		return (0);
120	if (!(kp->flags & F_OFFOK) && ip->off) {
121		syslog(LOG_INFO, "%s: illegal option: %s", printer, name);
122		return (1);
123	}
124	if (kp->flags & F_NEEDARG && !(ip->arg = *++*argvp)) {
125		syslog(LOG_INFO, "%s: option requires an argument: %s",
126		       printer, name);
127		return (1);
128	}
129	kp->f(ip);
130	return (1);
131}
132
133void
134f_cbreak(struct info *ip)
135{
136
137	if (ip->off)
138		f_sane(ip);
139	else {
140		ip->t.c_iflag |= BRKINT|IXON|IMAXBEL;
141		ip->t.c_oflag |= OPOST;
142		ip->t.c_lflag |= ISIG|IEXTEN;
143		ip->t.c_lflag &= ~ICANON;
144		ip->set = 1;
145	}
146}
147
148void
149f_columns(struct info *ip)
150{
151
152	ip->win.ws_col = atoi(ip->arg);
153	ip->wset = 1;
154}
155
156void
157f_dec(struct info *ip)
158{
159
160	ip->t.c_cc[VERASE] = (u_char)0177;
161	ip->t.c_cc[VKILL] = CTRL('u');
162	ip->t.c_cc[VINTR] = CTRL('c');
163	ip->t.c_lflag &= ~ECHOPRT;
164	ip->t.c_lflag |= ECHOE|ECHOKE|ECHOCTL;
165	ip->t.c_iflag &= ~IXANY;
166	ip->set = 1;
167}
168
169void
170f_extproc(struct info *ip)
171{
172
173	if (ip->set) {
174		int tmp = 1;
175		(void)ioctl(ip->fd, TIOCEXT, &tmp);
176	} else {
177		int tmp = 0;
178		(void)ioctl(ip->fd, TIOCEXT, &tmp);
179	}
180}
181
182void
183f_ispeed(struct info *ip)
184{
185
186	cfsetispeed(&ip->t, atoi(ip->arg));
187	ip->set = 1;
188}
189
190void
191f_nl(struct info *ip)
192{
193
194	if (ip->off) {
195		ip->t.c_iflag |= ICRNL;
196		ip->t.c_oflag |= ONLCR;
197	} else {
198		ip->t.c_iflag &= ~ICRNL;
199		ip->t.c_oflag &= ~ONLCR;
200	}
201	ip->set = 1;
202}
203
204void
205f_ospeed(struct info *ip)
206{
207
208	cfsetospeed(&ip->t, atoi(ip->arg));
209	ip->set = 1;
210}
211
212void
213f_raw(struct info *ip)
214{
215
216	if (ip->off)
217		f_sane(ip);
218	else {
219		cfmakeraw(&ip->t);
220		ip->t.c_cflag &= ~(CSIZE|PARENB);
221		ip->t.c_cflag |= CS8;
222		ip->set = 1;
223	}
224}
225
226void
227f_rows(struct info *ip)
228{
229
230	ip->win.ws_row = atoi(ip->arg);
231	ip->wset = 1;
232}
233
234void
235f_sane(struct info *ip)
236{
237
238	ip->t.c_cflag = TTYDEF_CFLAG | (ip->t.c_cflag & (CLOCAL|CRTSCTS|CDTRCTS));
239	ip->t.c_iflag = TTYDEF_IFLAG;
240	ip->t.c_iflag |= ICRNL;
241	/* preserve user-preference flags in lflag */
242#define	LKEEP	(ECHOKE|ECHOE|ECHOK|ECHOPRT|ECHOCTL|ALTWERASE|TOSTOP|NOFLSH)
243	ip->t.c_lflag = TTYDEF_LFLAG | (ip->t.c_lflag & LKEEP);
244	ip->t.c_oflag = TTYDEF_OFLAG;
245	ip->set = 1;
246}
247
248void
249f_tty(struct info *ip)
250{
251	int tmp;
252
253	tmp = TTYDISC;
254	if (ioctl(0, TIOCSETD, &tmp) < 0)
255		syslog(LOG_ERR, "%s: ioctl(TIOCSETD): %m", printer);
256}
257