1 | /* Reading passphrases manually. |
2 | Copyright (C) 1991-2022 Free Software Foundation, Inc. |
3 | |
4 | This program is free software; you can redistribute it and/or |
5 | modify it under the terms of the GNU General Public License |
6 | as published by the Free Software Foundation; either version 2 |
7 | of the License, or (at your option) any later version. |
8 | |
9 | This program is distributed in the hope that it will be useful, |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
12 | GNU General Public License for more details. |
13 | |
14 | You should have received a copy of the GNU General Public License |
15 | along with this program; if not, see <https://www.gnu.org/licenses/>. |
16 | */ |
17 | |
18 | #include <termios.h> |
19 | #include <stdio.h> |
20 | |
21 | ssize_t |
22 | my_getpass (char **lineptr, size_t *n, FILE *stream) |
23 | { |
24 | struct termios old, new; |
25 | int nread; |
26 | |
27 | /* Turn echoing off and fail if we can't. */ |
28 | if (tcgetattr (fd: fileno (stream), termios_p: &old) != 0) |
29 | return -1; |
30 | new = old; |
31 | new.c_lflag &= ~ECHO; |
32 | if (tcsetattr (fileno (stream), TCSAFLUSH, &new) != 0) |
33 | return -1; |
34 | |
35 | /* Read the passphrase */ |
36 | nread = getline (lineptr: lineptr, n: n, stream: stream); |
37 | |
38 | /* Restore terminal. */ |
39 | (void) tcsetattr (fileno (stream), TCSAFLUSH, &old); |
40 | |
41 | return nread; |
42 | } |
43 | |