1/*-
2 * Copyright (c) 1989, 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. Neither the name of the University nor the names of its contributors
14 *    may be used to endorse or promote products derived from this software
15 *    without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30#include <sys/types.h>
31
32#include <ctype.h>
33#include <err.h>
34#include <fcntl.h>
35#include <limits.h>
36#include <stdio.h>
37#include <stdlib.h>
38#include <string.h>
39#include <unistd.h>
40
41#include "stty.h"
42#include "extern.h"
43
44int
45main(int argc, char *argv[])
46{
47	struct info i;
48	enum FMT fmt;
49	int ch;
50	const char *file, *errstr = NULL;
51
52	fmt = NOTSET;
53	i.fd = STDIN_FILENO;
54	file = "stdin";
55
56	opterr = 0;
57	while (optind < argc &&
58	    strspn(argv[optind], "-aefg") == strlen(argv[optind]) &&
59	    (ch = getopt(argc, argv, "aef:g")) != -1)
60		switch(ch) {
61		case 'a':		/* undocumented: POSIX compatibility */
62			fmt = POSIX;
63			break;
64		case 'e':
65			fmt = BSD;
66			break;
67		case 'f':
68			if ((i.fd = open(optarg, O_RDONLY | O_NONBLOCK)) < 0)
69				err(1, "%s", optarg);
70			file = optarg;
71			break;
72		case 'g':
73			fmt = GFLAG;
74			break;
75		case '?':
76		default:
77			goto args;
78		}
79
80args:	argc -= optind;
81	argv += optind;
82
83	if (tcgetattr(i.fd, &i.t) < 0)
84		errx(1, "%s isn't a terminal", file);
85	if (ioctl(i.fd, TIOCGETD, &i.ldisc) < 0)
86		err(1, "TIOCGETD");
87	if (ioctl(i.fd, TIOCGWINSZ, &i.win) < 0)
88		warn("TIOCGWINSZ");
89
90	checkredirect();			/* conversion aid */
91
92	switch(fmt) {
93	case NOTSET:
94		if (*argv)
95			break;
96		/* FALLTHROUGH */
97	case BSD:
98	case POSIX:
99		print(&i.t, &i.win, i.ldisc, fmt);
100		break;
101	case GFLAG:
102		gprint(&i.t, &i.win, i.ldisc);
103		break;
104	}
105
106	for (i.set = i.wset = 0; *argv; ++argv) {
107		if (ksearch(&argv, &i))
108			continue;
109
110		if (csearch(&argv, &i))
111			continue;
112
113		if (msearch(&argv, &i))
114			continue;
115
116		if (isdigit(**argv)) {
117			speed_t speed;
118
119			speed = strtonum(*argv, 0, UINT_MAX, &errstr);
120			if (errstr)
121				err(1, "speed");
122			cfsetospeed(&i.t, speed);
123			cfsetispeed(&i.t, speed);
124			i.set = 1;
125			continue;
126		}
127
128		if (!strncmp(*argv, "gfmt1", sizeof("gfmt1") - 1)) {
129			gread(&i.t, *argv + sizeof("gfmt1") - 1);
130			i.set = 1;
131			continue;
132		}
133
134		warnx("illegal option -- %s", *argv);
135		usage();
136	}
137
138	if (i.set && tcsetattr(i.fd, 0, &i.t) < 0)
139		err(1, "tcsetattr");
140	if (i.wset && ioctl(i.fd, TIOCSWINSZ, &i.win) < 0)
141		warn("TIOCSWINSZ");
142	exit(0);
143}
144
145void
146usage(void)
147{
148
149	(void)fprintf(stderr,
150	    "usage: stty [-a | -e | -g] [-f file] [arguments]\n");
151	exit (1);
152}
153