bin/stty/stty.c

   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. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  *
  33  * @(#) Copyright (c) 1989, 1991, 1993, 1994 The Regents of the University of California.  All rights reserved.
  34  * @(#)stty.c   8.3 (Berkeley) 4/2/94
  35  * $FreeBSD: src/bin/stty/stty.c,v 1.13.2.2 2001/07/04 22:40:00 kris Exp $
  36  * $DragonFly: src/bin/stty/stty.c,v 1.5 2004/11/07 20:54:52 eirikn Exp $
  37  */
  38
  39 #include <sys/types.h>
  40
  41 #include <ctype.h>
  42 #include <err.h>
  43 #include <errno.h>
  44 #include <fcntl.h>
  45 #include <stdio.h>
  46 #include <stdlib.h>
  47 #include <string.h>
  48 #include <unistd.h>
  49
  50 #include "stty.h"
  51 #include "extern.h"
  52
  53 int main (int, char *[]);
  54
  55 int
  56 main(int argc, char **argv)
  57 {
  58         struct info i;
  59         enum FMT fmt;
  60         int ch;
  61
  62         fmt = NOTSET;
  63         i.fd = STDIN_FILENO;
  64
  65         opterr = 0;
  66         while (optind < argc &&
  67             strspn(argv[optind], "-aefg") == strlen(argv[optind]) &&
  68             (ch = getopt(argc, argv, "aef:g")) != -1)
  69                 switch(ch) {
  70                 case 'a':               /* undocumented: POSIX compatibility */
  71                         fmt = POSIX;
  72                         break;
  73                 case 'e':
  74                         fmt = BSD;
  75                         break;
  76                 case 'f':
  77                         if ((i.fd = open(optarg, O_RDONLY | O_NONBLOCK)) < 0)
  78                                 err(1, "%s", optarg);
  79                         break;
  80                 case 'g':
  81                         fmt = GFLAG;
  82                         break;
  83                 case '?':
  84                 default:
  85                         goto args;
  86                 }
  87
  88 args:   argc -= optind;
  89         argv += optind;
  90
  91         if (tcgetattr(i.fd, &i.t) < 0)
  92                 errx(1, "stdin isn't a terminal");
  93         if (ioctl(i.fd, TIOCGETD, &i.ldisc) < 0)
  94                 err(1, "TIOCGETD");
  95         if (ioctl(i.fd, TIOCGWINSZ, &i.win) < 0)
  96                 warn("TIOCGWINSZ");
  97
  98         checkredirect();                        /* conversion aid */
  99
 100         switch(fmt) {
 101         case NOTSET:
 102                 if (*argv)
 103                         break;
 104                 /* FALLTHROUGH */
 105         case BSD:
 106         case POSIX:
 107                 print(&i.t, &i.win, i.ldisc, fmt);
 108                 break;
 109         case GFLAG:
 110                 gprint(&i.t, &i.win, i.ldisc);
 111                 break;
 112         }
 113
 114         for (i.set = i.wset = 0; *argv; ++argv) {
 115                 if (ksearch(&argv, &i))
 116                         continue;
 117
 118                 if (csearch(&argv, &i))
 119                         continue;
 120
 121                 if (msearch(&argv, &i))
 122                         continue;
 123
 124                 if (isdigit(**argv)) {
 125                         speed_t speed;
 126
 127                         speed = atoi(*argv);
 128                         cfsetospeed(&i.t, speed);
 129                         cfsetispeed(&i.t, speed);
 130                         i.set = 1;
 131                         continue;
 132                 }
 133
 134                 if (!strncmp(*argv, "gfmt1", sizeof("gfmt1") - 1)) {
 135                         gread(&i.t, *argv + sizeof("gfmt1") - 1);
 136                         i.set = 1;
 137                         continue;
 138                 }
 139
 140                 warnx("illegal option -- %s", *argv);
 141                 usage();
 142         }
 143
 144         if (i.set && tcsetattr(i.fd, 0, &i.t) < 0)
 145                 err(1, "tcsetattr");
 146         if (i.wset && ioctl(i.fd, TIOCSWINSZ, &i.win) < 0)
 147                 warn("TIOCSWINSZ");
 148         exit(0);
 149 }
 150
 151 void
 152 usage(void)
 153 {
 154
 155         fprintf(stderr, "usage: stty [-a|-e|-g] [-f file] [options]\n");
 156         exit (1);
 157 }