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97 lines
3 KiB
C
97 lines
3 KiB
C
/* ==== pwd_internal.c ============================================================
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* Copyright (c) 1993, 1994 by Chris Provenzano, proven@mit.edu
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Chris Provenzano.
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* 4. The name of Chris Provenzano may not be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY CHRIS PROVENZANO ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL CHRIS PROVENZANO BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* Description : Thread-safe password hacking functions.
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*
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* 1.00 95/02/08 snl
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* -Started coding this file.
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*/
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#include <pthread.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <pwd.h>
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#include <unistd.h>
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#include "pwd_internal.h"
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static pthread_once_t __pw_init = PTHREAD_ONCE_INIT;
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static pthread_key_t __pw_key;
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void
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_pw_null_cleanup(void *junkola)
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{
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pwf_context_t *x = (pwf_context_t *)junkola;
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if (x) {
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if (x->pwf) {
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fclose(x->pwf);
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x->pwf = 0;
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}
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#ifdef DBM_PWD_SUPPORT
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if (x->pw_db) {
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dbm_close(x->pw_db);
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x->pw_db = 0;
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}
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#endif /* DBM_PWD_SUPPORT */
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free((void *)x);
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}
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}
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void
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_pw_create_key()
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{
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if (pthread_key_create(&__pw_key, _pw_null_cleanup)) {
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PANIC();
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}
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}
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pwf_context_t *
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_pw_get_data()
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{
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pwf_context_t *_data;
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pthread_once(&__pw_init, _pw_create_key);
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_data = (pwf_context_t *)pthread_getspecific(__pw_key);
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if (!_data) {
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_data = (pwf_context_t *)malloc(sizeof(pwf_context_t));
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if (_data) {
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_data->pwf = 0;
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_data->line[0] = '\0';
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_data->pw_stayopen = 0;
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_data->pw_file = "/etc/passwd";
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#ifdef DBM_PWD_SUPPORT
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_data->pw_db = 0;
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#endif /* DBM_PWD_SUPPORT */
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pthread_setspecific(__pw_key, (void *)_data);
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}
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}
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return _data;
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}
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