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/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2006
* 2007, 2008, 2009, 2010, 2011, 2012, 2013 Free Software Foundation, Inc.
*
* GRUB 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 3 of the License, or
* (at your option) any later version.
*
* GRUB 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 GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#include <grub/crypto.h>
#include <grub/mm.h>
#include <grub/term.h>
#include <termios.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
int
grub_password_get (char buf[], unsigned buf_size)
{
FILE *in;
struct termios s, t;
int tty_changed = 0;
char *ptr;
grub_refresh ();
/* Disable echoing. Based on glibc. */
in = fopen ("/dev/tty", "w+c");
if (in == NULL)
in = stdin;
if (tcgetattr (fileno (in), &t) == 0)
{
/* Save the old one. */
s = t;
/* Tricky, tricky. */
t.c_lflag &= ~(ECHO|ISIG);
tty_changed = (tcsetattr (fileno (in), TCSAFLUSH, &t) == 0);
}
else
tty_changed = 0;
grub_memset (buf, 0, buf_size);
if (!fgets (buf, buf_size, stdin))
{
if (in != stdin)
fclose (in);
return 0;
}
ptr = buf + strlen (buf) - 1;
while (buf <= ptr && (*ptr == '\n' || *ptr == '\r'))
*ptr-- = 0;
/* Restore the original setting. */
if (tty_changed)
(void) tcsetattr (fileno (in), TCSAFLUSH, &s);
grub_xputs ("\n");
grub_refresh ();
if (in != stdin)
fclose (in);
return 1;
}
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