mirror of
git://git.gnupg.org/gnupg.git
synced 2024-11-08 21:18:51 +01:00
91 lines
2.4 KiB
C
91 lines
2.4 KiB
C
/* passphrase.c - Get a passphrase
|
|
* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004,
|
|
* 2005, 2006, 2007, 2009, 2011 Free Software Foundation, Inc.
|
|
*
|
|
* This file is part of GnuPG.
|
|
*
|
|
* GnuPG 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.
|
|
*
|
|
* GnuPG 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 this program; if not, see <https://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <config.h>
|
|
#include <unistd.h>
|
|
|
|
#include "passphrase.h"
|
|
#include "gpgsm.h"
|
|
#include "../common/shareddefs.h"
|
|
#include "../common/ttyio.h"
|
|
|
|
static char *fd_passwd = NULL;
|
|
|
|
int
|
|
have_static_passphrase ()
|
|
{
|
|
return (!!fd_passwd
|
|
&& (opt.batch || opt.pinentry_mode == PINENTRY_MODE_LOOPBACK));
|
|
}
|
|
|
|
/* Return a static passphrase. The returned value is only valid as
|
|
long as no other passphrase related function is called. NULL may
|
|
be returned if no passphrase has been set; better use
|
|
have_static_passphrase first. */
|
|
const char *
|
|
get_static_passphrase (void)
|
|
{
|
|
return fd_passwd;
|
|
}
|
|
|
|
void
|
|
read_passphrase_from_fd (int fd)
|
|
{
|
|
int i, len;
|
|
char *pw;
|
|
|
|
if (!opt.batch && opt.pinentry_mode != PINENTRY_MODE_LOOPBACK)
|
|
{ /* Not used but we have to do a dummy read, so that it won't end
|
|
up at the begin of the message if the quite usual trick to
|
|
prepend the passphtrase to the message is used. */
|
|
char buf[1];
|
|
|
|
while (!(read (fd, buf, 1) != 1 || *buf == '\n'))
|
|
;
|
|
*buf = 0;
|
|
return;
|
|
}
|
|
|
|
for (pw = NULL, i = len = 100; ; i++)
|
|
{
|
|
if (i >= len-1)
|
|
{
|
|
char *pw2 = pw;
|
|
len += 100;
|
|
pw = xmalloc_secure (len);
|
|
if (pw2)
|
|
{
|
|
memcpy (pw, pw2, i);
|
|
xfree (pw2);
|
|
}
|
|
else
|
|
i = 0;
|
|
}
|
|
if (read (fd, pw+i, 1) != 1 || pw[i] == '\n')
|
|
break;
|
|
}
|
|
pw[i] = 0;
|
|
if (!opt.batch && opt.pinentry_mode != PINENTRY_MODE_LOOPBACK)
|
|
tty_printf("\b\b\b \n" );
|
|
|
|
xfree (fd_passwd);
|
|
fd_passwd = pw;
|
|
}
|