mirror of
https://github.com/sheumann/hush.git
synced 2024-11-05 06:07:00 +00:00
79 lines
2.7 KiB
C
79 lines
2.7 KiB
C
/* vi: set sw=4 ts=4: */
|
|
/*
|
|
* Copyright 1989 - 1991, Julianne Frances Haugh <jockgrrl@austin.rr.com>
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of Julianne F. Haugh nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY JULIE HAUGH AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL JULIE HAUGH OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <errno.h>
|
|
#include <unistd.h>
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
#include <syslog.h>
|
|
#include <ctype.h>
|
|
#include <crypt.h>
|
|
|
|
#include "libbb.h"
|
|
|
|
|
|
|
|
/* Ask the user for a password.
|
|
Return 1 if the user gives the correct password for entry PW,
|
|
0 if not. Return 1 without asking for a password if run by UID 0
|
|
or if PW has an empty password. */
|
|
|
|
int correct_password ( const struct passwd *pw )
|
|
{
|
|
char *unencrypted, *encrypted, *correct;
|
|
|
|
#ifdef CONFIG_FEATURE_SHADOWPASSWDS
|
|
if (( strcmp ( pw-> pw_passwd, "x" ) == 0 ) || ( strcmp ( pw-> pw_passwd, "*" ) == 0 )) {
|
|
struct spwd *sp = getspnam ( pw-> pw_name );
|
|
|
|
if ( !sp )
|
|
bb_error_msg_and_die ( "no valid shadow password" );
|
|
|
|
correct = sp-> sp_pwdp;
|
|
}
|
|
else
|
|
#endif
|
|
correct = pw-> pw_passwd;
|
|
|
|
if ( correct == 0 || correct[0] == '\0' )
|
|
return 1;
|
|
|
|
unencrypted = getpass ( "Password: " );
|
|
if ( !unencrypted )
|
|
{
|
|
fputs ( "getpass: cannot open /dev/tty\n", stderr );
|
|
return 0;
|
|
}
|
|
encrypted = crypt ( unencrypted, correct );
|
|
memset ( unencrypted, 0, bb_strlen ( unencrypted ));
|
|
return ( strcmp ( encrypted, correct ) == 0 ) ? 1 : 0;
|
|
}
|