diff options
Diffstat (limited to 'misc/getpass.c')
-rw-r--r-- | misc/getpass.c | 124 |
1 files changed, 0 insertions, 124 deletions
diff --git a/misc/getpass.c b/misc/getpass.c deleted file mode 100644 index 89c783fe20..0000000000 --- a/misc/getpass.c +++ /dev/null @@ -1,124 +0,0 @@ -/* Copyright (C) 1992-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library 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 - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - <http://www.gnu.org/licenses/>. */ - -#include <stdio.h> -#include <stdio_ext.h> -#include <string.h> /* For string function builtin redirect. */ -#include <termios.h> -#include <unistd.h> - -#include <wchar.h> -#define flockfile(s) _IO_flockfile (s) -#define funlockfile(s) _IO_funlockfile (s) -#include <libc-lock.h> - -/* It is desirable to use this bit on systems that have it. - The only bit of terminal state we want to twiddle is echoing, which is - done in software; there is no need to change the state of the terminal - hardware. */ - -#ifndef TCSASOFT -#define TCSASOFT 0 -#endif - -static void -call_fclose (void *arg) -{ - if (arg != NULL) - fclose (arg); -} - -char * -getpass (const char *prompt) -{ - FILE *in, *out; - struct termios s, t; - int tty_changed; - static char *buf; - static size_t bufsize; - ssize_t nread; - - /* Try to write to and read from the terminal if we can. - If we can't open the terminal, use stderr and stdin. */ - - in = fopen ("/dev/tty", "w+ce"); - if (in == NULL) - { - in = stdin; - out = stderr; - } - else - { - /* We do the locking ourselves. */ - __fsetlocking (in, FSETLOCKING_BYCALLER); - - out = in; - } - - /* Make sure the stream we opened is closed even if the thread is - canceled. */ - __libc_cleanup_push (call_fclose, in == out ? in : NULL); - - flockfile (out); - - /* Turn echoing off if it is on now. */ - - 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|TCSASOFT, &t) == 0); - } - else - tty_changed = 0; - - /* Write the prompt. */ - __fxprintf (out, "%s", prompt); - __fflush_unlocked (out); - - /* Read the password. */ - nread = __getline (&buf, &bufsize, in); - if (buf != NULL) - { - if (nread < 0) - buf[0] = '\0'; - else if (buf[nread - 1] == '\n') - { - /* Remove the newline. */ - buf[nread - 1] = '\0'; - if (tty_changed) - /* Write the newline that was not echoed. */ - __fxprintf (out, "\n"); - } - } - - /* Restore the original setting. */ - if (tty_changed) - (void) tcsetattr (fileno (in), TCSAFLUSH|TCSASOFT, &s); - - funlockfile (out); - - __libc_cleanup_pop (0); - - if (in != stdin) - /* We opened the terminal; now close it. */ - fclose (in); - - return buf; -} |