Home | History | Annotate | Line # | Download | only in sti
sti.c revision 1.6 
      1 /*	$NetBSD: sti.c,v 1.6 2005/11/11 15:08:40 peter Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2005 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Christos Zoulas.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *        This product includes software developed by the NetBSD
     21  *        Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 #include <sys/cdefs.h>
     39 __RCSID("$NetBSD: sti.c,v 1.6 2005/11/11 15:08:40 peter Exp $");
     40 
     41 #include <sys/param.h>
     42 #include <sys/ioctl.h>
     43 #include <ctype.h>
     44 #include <stdio.h>
     45 #include <string.h>
     46 #include <stdlib.h>
     47 #include <unistd.h>
     48 #include <fcntl.h>
     49 #include <err.h>
     50 #include <vis.h>
     51 #include <errno.h>
     52 
     53 static int
     54 unescape(const char **pp, int *state)
     55 {
     56 	char ch, out;
     57 
     58 	while ((ch = *(*pp)++) != '\0') {
     59 		switch(unvis(&out, ch, state, 0)) {
     60 		case 0:
     61 		case UNVIS_NOCHAR:
     62 		        break;
     63 		case UNVIS_VALID:
     64 			return out;
     65 		case UNVIS_VALIDPUSH:
     66 		        (*pp)--;
     67 			return out;
     68 		case UNVIS_SYNBAD:
     69 			errno = EILSEQ;
     70 			return -1;
     71 		}
     72 	}
     73 	if (unvis(&out, '\0', state, UNVIS_END) == UNVIS_VALID)
     74 		return out;
     75 	errno = ENODATA;
     76 	return -1;
     77 }
     78 
     79 static void
     80 sti(int fd, int c)
     81 {
     82 	char ch = c;
     83 
     84 	if (ioctl(fd, TIOCSTI, &ch) == -1)
     85 		err(1, "Cannot simulate terminal input");
     86 }
     87 
     88 static void
     89 sendstr(int fd, const char *str)
     90 {
     91 	int c, state = 0;
     92 	const char *ptr = str;
     93 
     94 	while ((c = unescape(&ptr, &state)) != -1)
     95 		sti(fd, c);
     96 
     97 	if (c == -1 && errno != ENODATA)
     98 		warn("Cannot decode `%s'", str);
     99 }
    100 
    101 int
    102 main(int argc, char *argv[])
    103 {
    104 	const char *tty;
    105 	char ttydev[MAXPATHLEN];
    106 	int fd;
    107 
    108 	setprogname(*argv);
    109 
    110 	if (argc < 2) {
    111 		(void)fprintf(stderr, "Usage: %s <tty> [arg ...]\n",
    112 		    getprogname());
    113 		return 1;
    114 	}
    115 
    116 	argc--;
    117 	argv++;
    118 
    119 	tty = *argv++;
    120 	argc--;
    121 
    122 	if (strncmp(tty, "/dev/", 5) == 0)
    123 		(void)snprintf(ttydev, sizeof(ttydev), "%s", tty);
    124 	else if (strncmp(tty, "tty", 3) == 0 || strncmp(tty, "pty", 3) == 0 ||
    125 	    strncmp(tty, "pts/", 4) == 0)
    126 		(void)snprintf(ttydev, sizeof(ttydev), "/dev/%s", tty);
    127 	else if (isdigit((unsigned char)*tty))
    128 		(void)snprintf(ttydev, sizeof(ttydev), "/dev/pts/%s", tty);
    129 	else
    130 		(void)snprintf(ttydev, sizeof(ttydev), "/dev/tty%s", tty);
    131 
    132 	if ((fd = open(ttydev, O_RDWR)) == -1)
    133 		err(1, "Cannot open `%s'", ttydev);
    134 
    135 	if (argc == 0) {
    136 		char *line;
    137 		while ((line = fparseln(stdin, NULL, NULL, NULL, 0)) != NULL) {
    138 			sendstr(fd, line);
    139 			free(line);
    140 		}
    141 	} else {
    142 		for (; argc--; argv++) {
    143 			sendstr(fd, *argv);
    144 			if (argc != 0)
    145 				sti(fd, ' ');
    146 		}
    147 	}
    148 
    149 	(void)close(fd);
    150 	return 0;
    151 }
    152