1 /* $OpenBSD: stty.c,v 1.20 2016/07/23 08:57:18 bluhm Exp $ */ 2 /* $NetBSD: stty.c,v 1.11 1995/03/21 09:11:30 cgd Exp $ */ 3 4 /*- 5 * Copyright (c) 1989, 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 <ctype.h> 37 #include <err.h> 38 #include <errno.h> 39 #include <fcntl.h> 40 #include <limits.h> 41 #include <stdio.h> 42 #include <stdlib.h> 43 #include <string.h> 44 #include <termios.h> 45 #include <unistd.h> 46 47 #include "stty.h" 48 #include "extern.h" 49 50 int 51 main(int argc, char *argv[]) 52 { 53 struct info i; 54 enum FMT fmt; 55 int ch; 56 57 fmt = NOTSET; 58 i.fd = STDIN_FILENO; 59 60 opterr = 0; 61 while (optind < argc && 62 strspn(argv[optind], "-aefg") == strlen(argv[optind]) && 63 (ch = getopt(argc, argv, "aef:g")) != -1) 64 switch(ch) { 65 case 'a': 66 fmt = POSIX; 67 break; 68 case 'e': 69 fmt = BSD; 70 break; 71 case 'f': 72 if ((i.fd = open(optarg, O_RDONLY | O_NONBLOCK)) < 0) 73 err(1, "%s", optarg); 74 break; 75 case 'g': 76 fmt = GFLAG; 77 break; 78 default: 79 goto args; 80 } 81 82 args: argc -= optind; 83 argv += optind; 84 85 if (ioctl(i.fd, TIOCGETD, &i.ldisc) < 0 ) 86 err(1, "TIOCGETD"); 87 88 if (tcgetattr(i.fd, &i.t) < 0) 89 errx(1, "not a terminal"); 90 if (ioctl(i.fd, TIOCGWINSZ, &i.win) < 0) 91 warn("TIOCGWINSZ"); 92 93 switch(fmt) { 94 case NOTSET: 95 if (*argv) 96 break; 97 /* FALLTHROUGH */ 98 case BSD: 99 case POSIX: 100 if (*argv) 101 errx(1, "either display or modify"); 102 if (pledge("stdio", NULL) == -1) 103 err(1, "pledge"); 104 print(&i.t, &i.win, i.ldisc, fmt); 105 break; 106 case GFLAG: 107 if (*argv) 108 errx(1, "either display or modify"); 109 if (pledge("stdio", NULL) == -1) 110 err(1, "pledge"); 111 gprint(&i.t, &i.win, i.ldisc); 112 break; 113 } 114 115 /* 116 * Cannot pledge, because of "extproc", "ostart" and "ostop" 117 */ 118 119 for (i.set = i.wset = 0; *argv; ++argv) { 120 if (ksearch(&argv, &i)) 121 continue; 122 123 if (csearch(&argv, &i)) 124 continue; 125 126 if (msearch(&argv, &i)) 127 continue; 128 129 if (isdigit((unsigned char)**argv)) { 130 const char *error; 131 int speed; 132 133 speed = strtonum(*argv, 0, INT_MAX, &error); 134 if (error) 135 err(1, "%s", *argv); 136 cfsetospeed(&i.t, speed); 137 cfsetispeed(&i.t, speed); 138 i.set = 1; 139 continue; 140 } 141 142 if (!strncmp(*argv, "gfmt1", sizeof("gfmt1") - 1)) { 143 gread(&i.t, *argv + sizeof("gfmt1") - 1); 144 i.set = 1; 145 continue; 146 } 147 148 warnx("illegal option -- %s", *argv); 149 usage(); 150 } 151 152 if (i.set && tcsetattr(i.fd, 0, &i.t) < 0) 153 err(1, "tcsetattr"); 154 if (i.wset && ioctl(i.fd, TIOCSWINSZ, &i.win) < 0) 155 warn("TIOCSWINSZ"); 156 return (0); 157 } 158 159 void 160 usage(void) 161 { 162 fprintf(stderr, "usage: %s [-a | -e | -g] [-f file] [operands]\n", 163 __progname); 164 exit (1); 165 } 166