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/* terminal.c -- set and restore the terminal for vlock
*
* This program is copyright (C) 1994 Michael K. Johnson, and is free
* software which is freely distributable under the terms of the
* GNU public license, included as the file COPYING in this
* distribution. It is NOT public domain software, and any
* redistribution not permitted by the GNU Public License is
* expressly forbidden without prior written permission from
* the author.
*
*/
/* RCS log:
* $Log: terminal.c,v $
* Revision 1.7 1996/05/17 02:50:54 johnsonm
* Thinkos fixed. Include file paths updated.
*
* Revision 1.6 1994/07/03 13:10:06 johnsonm
* Allow setting terminal state back and forth on echo, but keep ignoring sig,
* based on an argument.
*
* Revision 1.5 1994/07/03 12:31:26 johnsonm
* Don't restore signals when restoring the terminal state! Let other code
* do that later, when the correct password has been entered.
*
* Revision 1.4 1994/07/03 12:25:26 johnsonm
* Only get old terminal characteristics the first time.
*
* Revision 1.3 1994/03/23 17:01:01 johnsonm
* Added support for non-vt ttys.
*
* Revision 1.2 1994/03/17 18:22:08 johnsonm
* Removed spurious printf.
*
* Revision 1.1 1994/03/15 18:27:33 johnsonm
* Initial revision
*
*
*/
#include <stdio.h>
#include <unistd.h>
#include <termios.h>
#include <sys/ioctl.h>
#include <sys/vt.h>
#include "vlock.h"
static char rcsid[] = "$Id: terminal.c,v 1.7 1996/05/17 02:50:54 johnsonm Exp johnsonm $";
void set_terminal(int print) {
static struct termios term;
static int already=0;
if (!already) {
tcgetattr(STDIN_FILENO, &oterm);
term=oterm;
term.c_iflag &= ~BRKINT;
term.c_iflag |= IGNBRK;
term.c_lflag &= ~ISIG;
already=1;
}
if (print)
term.c_lflag |= (ECHO & ECHOCTL);
else
term.c_lflag &= ~(ECHO | ECHOCTL);
tcsetattr(STDIN_FILENO, TCSANOW, &term);
}
void restore_terminal(void) {
if (is_vt) {
ioctl(vfd, VT_SETMODE, &ovtm);
}
tcsetattr(STDIN_FILENO, TCSANOW, &oterm);
}
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