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/*
* Copyright (C) 2014-2023 Firejail Authors
*
* This file is part of firejail project
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "fnettrace.h"
#include <termios.h>
static struct termios tlocal; // startup terminal setting
static struct termios twait; // no wait on key press
static int tset = 0;
void terminal_restore(void) {
if (tset)
tcsetattr(0, TCSANOW, &tlocal);
}
void terminal_handler(int s) {
// Remove unused parameter warning
(void)s;
terminal_restore();
_exit(0);
}
void terminal_set(void) {
if (tset == 0) {
tcgetattr(0, &twait); // get current terminal attributes; 0 is the file descriptor for stdin
memcpy(&tlocal, &twait, sizeof(tlocal));
twait.c_lflag &= ~ICANON; // disable canonical mode
twait.c_lflag &= ~ECHO; // no echo
twait.c_cc[VMIN] = 1; // wait until at least one keystroke available
twait.c_cc[VTIME] = 0; // no timeout
tset = 1;
}
tcsetattr(0, TCSANOW, &twait);
}
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