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      1 /*	$NetBSD: openpam_free_envlist.c,v 1.4 2023/06/30 21:46:20 christos Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2005-2011 Dag-Erling Smrgrav
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. The name of the author may not be used to endorse or promote products
     16  *    derived from this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     23  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     24  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     25  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     27  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     28  */
     29 
     30 #ifdef HAVE_CONFIG_H
     31 # include "config.h"
     32 #endif
     33 
     34 #include <sys/cdefs.h>
     35 __RCSID("$NetBSD: openpam_free_envlist.c,v 1.4 2023/06/30 21:46:20 christos Exp $");
     36 
     37 #include <stdlib.h>
     38 
     39 #include <security/pam_appl.h>
     40 
     41 #include "openpam_impl.h"
     42 
     43 /*
     44  * OpenPAM extension
     45  *
     46  * Free an environment list
     47  */
     48 
     49 void
     50 openpam_free_envlist(char **envlist)
     51 {
     52 	char **env;
     53 
     54 	ENTER();
     55 	if (envlist == NULL)
     56 		RETURNV();
     57 	for (env = envlist; *env != NULL; ++env)
     58 		FREE(*env);
     59 	FREE(envlist);
     60 	RETURNV();
     61 }
     62 
     63 /*
     64  * Error codes:
     65  */
     66 
     67 /**
     68  * The =openpam_free_envlist function is a convenience function which
     69  * frees all the environment variables in an environment list, and the
     70  * list itself.
     71  * It is suitable for freeing the return value from =pam_getenvlist.
     72  *
     73  * AUTHOR DES
     74  */
     75