FreeBSD-5.3/usr.bin/tset/tset.c
/*-
* Copyright (c) 1980, 1991, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: src/usr.bin/tset/tset.c,v 1.19 2002/09/04 23:29:07 dwmalone Exp $");
#ifndef lint
static const char copyright[] =
"@(#) Copyright (c) 1980, 1991, 1993\n\
The Regents of the University of California. All rights reserved.\n";
#endif
#ifndef lint
static const char sccsid[] = "@(#)tset.c 8.1 (Berkeley) 6/9/93";
#endif
#include <sys/types.h>
#include <sys/ioctl.h>
#include <ctype.h>
#include <err.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <termios.h>
#include <unistd.h>
#include "extern.h"
void obsolete(char *[]);
void report(const char *, int, u_int);
void usage(void);
struct termios mode, oldmode;
int erasech; /* new erase character */
int intrchar; /* new interrupt character */
int isreset; /* invoked as reset */
int killch; /* new kill character */
int Lines, Columns; /* window size */
speed_t Ospeed;
int
main(int argc, char *argv[])
{
#ifdef TIOCGWINSZ
struct winsize win;
#endif
int ch, noinit, noset, quiet, Sflag, sflag, showterm, usingupper;
char *p, *tcapbuf;
const char *ttype;
if (tcgetattr(STDERR_FILENO, &mode) < 0)
err(1, "standard error");
oldmode = mode;
Ospeed = cfgetospeed(&mode);
if ((p = strrchr(*argv, '/')))
++p;
else
p = *argv;
usingupper = isupper(*p);
if (!strcasecmp(p, "reset")) {
isreset = 1;
reset_mode();
}
obsolete(argv);
noinit = noset = quiet = Sflag = sflag = showterm = 0;
while ((ch = getopt(argc, argv, "-a:d:e:Ii:k:m:np:QSrs")) != -1) {
switch (ch) {
case '-': /* display term only */
noset = 1;
break;
case 'a': /* OBSOLETE: map identifier to type */
add_mapping("arpanet", optarg);
break;
case 'd': /* OBSOLETE: map identifier to type */
add_mapping("dialup", optarg);
break;
case 'e': /* erase character */
erasech = optarg[0] == '^' && optarg[1] != '\0' ?
optarg[1] == '?' ? '\177' : CTRL(optarg[1]) :
optarg[0];
break;
case 'I': /* no initialization strings */
noinit = 1;
break;
case 'i': /* interrupt character */
intrchar = optarg[0] == '^' && optarg[1] != '\0' ?
optarg[1] == '?' ? '\177' : CTRL(optarg[1]) :
optarg[0];
break;
case 'k': /* kill character */
killch = optarg[0] == '^' && optarg[1] != '\0' ?
optarg[1] == '?' ? '\177' : CTRL(optarg[1]) :
optarg[0];
break;
case 'm': /* map identifier to type */
add_mapping(NULL, optarg);
break;
case 'n': /* OBSOLETE: set new tty driver */
break;
case 'p': /* OBSOLETE: map identifier to type */
add_mapping("plugboard", optarg);
break;
case 'Q': /* don't output control key settings */
quiet = 1;
break;
case 'S': /* output TERM/TERMCAP strings */
Sflag = 1;
break;
case 'r': /* display term on stderr */
showterm = 1;
break;
case 's': /* output TERM/TERMCAP strings */
sflag = 1;
break;
case '?':
default:
usage();
}
}
argc -= optind;
argv += optind;
if (argc > 1)
usage();
ttype = get_termcap_entry(*argv, &tcapbuf);
if (!noset) {
Columns = tgetnum("co");
Lines = tgetnum("li");
#ifdef TIOCGWINSZ
/* Set window size */
(void)ioctl(STDERR_FILENO, TIOCGWINSZ, &win);
if (win.ws_row == 0 && win.ws_col == 0 &&
Lines > 0 && Columns > 0) {
win.ws_row = Lines;
win.ws_col = Columns;
(void)ioctl(STDERR_FILENO, TIOCSWINSZ, &win);
}
#endif
set_control_chars();
set_conversions(usingupper);
if (!noinit)
set_init();
/* Set the modes if they've changed. */
if (memcmp(&mode, &oldmode, sizeof(mode)))
tcsetattr(STDERR_FILENO, TCSADRAIN, &mode);
}
if (noset)
(void)printf("%s\n", ttype);
else {
if (showterm)
(void)fprintf(stderr, "Terminal type is %s.\n", ttype);
/*
* If erase, kill and interrupt characters could have been
* modified and not -Q, display the changes.
*/
if (!quiet) {
report("Erase", VERASE, CERASE);
report("Kill", VKILL, CKILL);
report("Interrupt", VINTR, CINTR);
}
}
if (Sflag) {
(void)printf("%s ", ttype);
if (strlen(tcapbuf) > 0)
wrtermcap(tcapbuf);
}
if (sflag) {
/*
* Figure out what shell we're using. A hack, we look for an
* environmental variable SHELL ending in "csh".
*/
if ((p = getenv("SHELL")) &&
!strcmp(p + strlen(p) - 3, "csh")) {
printf("set noglob;\nsetenv TERM %s;\n", ttype);
if (strlen(tcapbuf) > 0) {
printf("setenv TERMCAP '");
wrtermcap(tcapbuf);
printf("';\n");
}
printf("unset noglob;\n");
} else {
printf("TERM=%s;\n", ttype);
if (strlen(tcapbuf) > 0) {
printf("TERMCAP='");
wrtermcap(tcapbuf);
printf("';\nexport TERMCAP;\n");
}
printf("export TERM;\n");
}
}
exit(0);
}
/*
* Tell the user if a control key has been changed from the default value.
*/
void
report(const char *name, int which, u_int def)
{
u_int old, new;
new = mode.c_cc[which];
old = oldmode.c_cc[which];
if (old == new && old == def)
return;
(void)fprintf(stderr, "%s %s ", name, old == new ? "is" : "set to");
if (new == 010)
(void)fprintf(stderr, "backspace.\n");
else if (new == 0177)
(void)fprintf(stderr, "delete.\n");
else if (new < 040) {
new ^= 0100;
(void)fprintf(stderr, "control-%c (^%c).\n", new, new);
} else
(void)fprintf(stderr, "%c.\n", new);
}
/*
* Convert the obsolete argument form into something that getopt can handle.
* This means that -e, -i and -k get default arguments supplied for them.
*/
void
obsolete(char *argv[])
{
for (; *argv; ++argv) {
if (argv[0][0] != '-' || (argv[1] && argv[1][0] != '-') ||
(argv[0][1] != 'e' && argv[0][1] != 'i' && argv[0][1] != 'k') ||
argv[0][2] != '\0')
continue;
switch(argv[0][1]) {
case 'e':
argv[0] = strdup("-e^H");
break;
case 'i':
argv[0] = strdup("-i^C");
break;
case 'k':
argv[0] = strdup("-k^U");
break;
}
}
}
void
usage(void)
{
(void)fprintf(stderr, "%s\n%s\n",
"usage: tset [-IQrSs] [-] [-e ch] [-i ch] [-k ch] [-m mapping] [terminal]",
" reset [-IQrSs] [-] [-e ch] [-i ch] [-k ch] [-m mapping] [terminal]");
exit(1);
}