1/* $NetBSD: stty.c,v 1.21.20.1 2012/06/28 16:12:07 riz Exp $ */
2
3/*-
4 * Copyright (c) 1989, 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__COPYRIGHT("@(#) Copyright (c) 1989, 1991, 1993, 1994\
35 The Regents of the University of California.  All rights reserved.");
36#endif /* not lint */
37
38#ifndef lint
39#if 0
40static char sccsid[] = "@(#)stty.c	8.3 (Berkeley) 4/2/94";
41#else
42__RCSID("$NetBSD: stty.c,v 1.21.20.1 2012/06/28 16:12:07 riz Exp $");
43#endif
44#endif /* not lint */
45
46#include <sys/types.h>
47
48#include <ctype.h>
49#include <err.h>
50#include <errno.h>
51#include <fcntl.h>
52#include <locale.h>
53#include <stdio.h>
54#include <stdlib.h>
55#include <string.h>
56#include <unistd.h>
57
58#include "stty.h"
59#include "extern.h"
60
61int main(int, char *[]);
62
63int
64main(int argc, char *argv[])
65{
66	struct info i;
67	enum FMT fmt;
68	int ch;
69
70	setprogname(argv[0]);
71	(void)setlocale(LC_ALL, "");
72
73	fmt = STTY_NOTSET;
74	i.fd = STDIN_FILENO;
75
76	opterr = 0;
77	while (optind < argc &&
78	    strspn(argv[optind], "-aefg") == strlen(argv[optind]) &&
79	    (ch = getopt(argc, argv, "aef:g")) != -1)
80		switch(ch) {
81		case 'a':		/* undocumented: POSIX compatibility */
82			fmt = STTY_POSIX;
83			break;
84		case 'e':
85			fmt = STTY_BSD;
86			break;
87		case 'f':
88			if ((i.fd = open(optarg, O_RDONLY | O_NONBLOCK)) < 0)
89				err(1, "%s", optarg);
90			break;
91		case 'g':
92			fmt = STTY_GFLAG;
93			break;
94		case '?':
95		default:
96			goto args;
97		}
98
99args:	argc -= optind;
100	argv += optind;
101
102	if (ioctl(i.fd, TIOCGETD, &i.ldisc) < 0)
103		err(1, "TIOCGETD");
104	if (tcgetattr(i.fd, &i.t) < 0)
105		err(1, "tcgetattr");
106	if (ioctl(i.fd, TIOCGWINSZ, &i.win) < 0)
107		warn("TIOCGWINSZ");
108
109	switch(fmt) {
110	case STTY_NOTSET:
111		if (*argv)
112			break;
113		/* FALLTHROUGH */
114	case STTY_BSD:
115	case STTY_POSIX:
116		print(&i.t, &i.win, i.ldisc, fmt);
117		break;
118	case STTY_GFLAG:
119		gprint(&i.t);
120		break;
121	}
122
123	for (i.set = i.wset = 0; *argv; ++argv) {
124		if (ksearch(&argv, &i))
125			continue;
126
127		if (csearch(&argv, &i))
128			continue;
129
130		if (msearch(&argv, &i))
131			continue;
132
133		if (isdigit((unsigned char)**argv)) {
134			int speed;
135
136			speed = atoi(*argv);
137			cfsetospeed(&i.t, speed);
138			cfsetispeed(&i.t, speed);
139			i.set = 1;
140			continue;
141		}
142
143		if (!strncmp(*argv, "gfmt1", sizeof("gfmt1") - 1)) {
144			gread(&i.t, *argv + sizeof("gfmt1") - 1);
145			i.set = 1;
146			continue;
147		}
148
149		warnx("illegal option -- %s", *argv);
150		usage();
151	}
152
153	if (i.set && tcsetattr(i.fd, 0, &i.t) < 0)
154		err(1, "tcsetattr");
155	if (i.wset && ioctl(i.fd, TIOCSWINSZ, &i.win) < 0)
156		warn("TIOCSWINSZ");
157	exit(0);
158	/* NOTREACHED */
159}
160
161void
162usage(void)
163{
164
165	(void)fprintf(stderr, "usage: %s [-a|-e|-g] [-f file] [operand ...]\n", getprogname());
166	exit(1);
167	/* NOTREACHED */
168}
169