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/* ==== pwd_internal.c ============================================================
* Copyright (c) 1993, 1994 by Chris Provenzano, proven@mit.edu
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Chris Provenzano.
* 4. The name of Chris Provenzano may not be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY CHRIS PROVENZANO ``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 CHRIS PROVENZANO 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.
*
* Description : Thread-safe password hacking functions.
*
* 1.00 95/02/08 snl
* -Started coding this file.
*/
#include <pthread.h>
#include <stdlib.h>
#include <stdio.h>
#include <pwd.h>
#include <unistd.h>
#include "pwd_internal.h"
static pthread_once_t __pw_init = PTHREAD_ONCE_INIT;
static pthread_key_t __pw_key;
void
_pw_null_cleanup(void *junkola)
{
pwf_context_t *x = (pwf_context_t *)junkola;
if (x) {
if (x->pwf) {
fclose(x->pwf);
x->pwf = 0;
}
#ifdef DBM_PWD_SUPPORT
if (x->pw_db) {
dbm_close(x->pw_db);
x->pw_db = 0;
}
#endif /* DBM_PWD_SUPPORT */
free((void *)x);
}
}
void
_pw_create_key()
{
if (pthread_key_create(&__pw_key, _pw_null_cleanup)) {
PANIC();
}
}
pwf_context_t *
_pw_get_data()
{
pwf_context_t *_data;
pthread_once(&__pw_init, _pw_create_key);
_data = (pwf_context_t *)pthread_getspecific(__pw_key);
if (!_data) {
_data = (pwf_context_t *)malloc(sizeof(pwf_context_t));
if (_data) {
_data->pwf = 0;
_data->line[0] = '\0';
_data->pw_stayopen = 0;
_data->pw_file = "/etc/passwd";
#ifdef DBM_PWD_SUPPORT
_data->pw_db = 0;
#endif /* DBM_PWD_SUPPORT */
pthread_setspecific(__pw_key, (void *)_data);
}
}
return _data;
}
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