/*

    Terminal Mixer - multi-point multi-user access to terminal applications

    Copyright (C) 2007  Lluís Batlle i Rossell

    Please find the license in the provided COPYING file.

*/

#include <sys/types.h>

#include <unistd.h>

#include <errno.h>

#include <fcntl.h>

#include <string.h>

#include <stdlib.h>

#include <stdio.h>

#include <sys/ioctl.h>

#include <termios.h>

#include "main.h"

static int is_tios_saved = 0;

static struct termios saved_tios;

void prepare_user_terminal()

{

    int res;

    struct termios tios;

    res = tcgetattr(1, &tios);

    if (res == -1)

        error("tcgetatttr");

    memcpy(&saved_tios, &tios, sizeof(struct termios));

    is_tios_saved = 1;

    cfmakeraw(&tios);

    tios.c_lflag &= ~ECHO;

    res = tcsetattr(0, TCSANOW, &tios);

    if (res == -1)

        error("tcsetatttr");

}

void restore_user_terminal()

{

    int res;

    res = tcsetattr(0, TCSANOW, &saved_tios);

    if (res == -1)

    {

        /* cannot call error(), because it calls finish(), then

         * restore_user_terminal() */

        fprintf(stderr,"tcsetatttr failed: %s", strerror(errno));

        exit(-1);

    }

}

void finish(int ret)

{

    if (is_tios_saved)

        restore_user_terminal();

    exit(ret);

}