pam_getenv.c revision 1.3 
1/*	$NetBSD: pam_getenv.c,v 1.3 2017/05/06 19:50:10 christos Exp $	*/
2
3/*-
4 * Copyright (c) 2002-2003 Networks Associates Technology, Inc.
5 * Copyright (c) 2004-2017 Dag-Erling Sm��rgrav
6 * All rights reserved.
7 *
8 * This software was developed for the FreeBSD Project by ThinkSec AS and
9 * Network Associates Laboratories, the Security Research Division of
10 * Network Associates, Inc.  under DARPA/SPAWAR contract N66001-01-C-8035
11 * ("CBOSS"), as part of the DARPA CHATS research program.
12 *
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
15 * are met:
16 * 1. Redistributions of source code must retain the above copyright
17 *    notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 *    notice, this list of conditions and the following disclaimer in the
20 *    documentation and/or other materials provided with the distribution.
21 * 3. The name of the author may not be used to endorse or promote
22 *    products derived from this software without specific prior written
23 *    permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * SUCH DAMAGE.
36 *
37 * $OpenPAM: pam_getenv.c 938 2017-04-30 21:34:42Z des $
38 */
39
40#ifdef HAVE_CONFIG_H
41# include "config.h"
42#endif
43
44#include <sys/cdefs.h>
45__RCSID("$NetBSD: pam_getenv.c,v 1.3 2017/05/06 19:50:10 christos Exp $");
46
47#include <errno.h>
48#include <stdlib.h>
49#include <string.h>
50
51#include <security/pam_appl.h>
52
53#include "openpam_impl.h"
54
55/*
56 * XSSO 4.2.1
57 * XSSO 6 page 44
58 *
59 * Retrieve the value of a PAM environment variable
60 */
61
62const char *
63pam_getenv(pam_handle_t *pamh,
64	const char *name)
65{
66	char *str;
67	int i;
68
69	ENTERS(name);
70	if (strchr(name, '=') != NULL) {
71		errno = EINVAL;
72		RETURNS(NULL);
73	}
74	if ((i = openpam_findenv(pamh, name, strlen(name))) < 0)
75		RETURNS(NULL);
76	if ((str = strchr(pamh->env[i], '=')) == NULL)
77		RETURNS("");
78	RETURNS(str);
79}
80
81/**
82 * The =pam_getenv function returns the value of an environment variable.
83 * Its semantics are similar to those of =getenv, but it accesses the PAM
84 * context's environment list instead of the application's.
85 *
86 * >pam_getenvlist
87 * >pam_putenv
88 * >pam_setenv
89 */
90