| /* |
| * 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; |
| } |