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
21ssize_t
22my_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

source code of glibc/manual/examples/mygetpass.c