source: openpam/trunk/lib/libpam/pam_getenv.c @ 914

Last change on this file since 914 was 914, checked in by Dag-Erling Smørgrav, 4 years ago

In pam_*env(3), set errno as the corresponding POSIX functions would.

  • Property svn:eol-style set to native
  • Property svn:keywords set to Id
File size: 2.7 KB
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1/*-
2 * Copyright (c) 2002-2003 Networks Associates Technology, Inc.
3 * Copyright (c) 2004-2011 Dag-Erling Smørgrav
4 * All rights reserved.
5 *
6 * This software was developed for the FreeBSD Project by ThinkSec AS and
7 * Network Associates Laboratories, the Security Research Division of
8 * Network Associates, Inc.  under DARPA/SPAWAR contract N66001-01-C-8035
9 * ("CBOSS"), as part of the DARPA CHATS research program.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 *    notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 *    notice, this list of conditions and the following disclaimer in the
18 *    documentation and/or other materials provided with the distribution.
19 * 3. The name of the author may not be used to endorse or promote
20 *    products derived from this software without specific prior written
21 *    permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 *
35 * $Id: pam_getenv.c 914 2017-01-21 15:15:29Z des $
36 */
37
38#ifdef HAVE_CONFIG_H
39# include "config.h"
40#endif
41
42#include <errno.h>
43#include <stdlib.h>
44#include <string.h>
45
46#include <security/pam_appl.h>
47
48#include "openpam_impl.h"
49
50/*
51 * XSSO 4.2.1
52 * XSSO 6 page 44
53 *
54 * Retrieve the value of a PAM environment variable
55 */
56
57const char *
58pam_getenv(pam_handle_t *pamh,
59        const char *name)
60{
61        char *str;
62        int i;
63
64        ENTERS(name);
65        if (strchr(name, '=') != NULL) {
66                errno = EINVAL;
67                RETURNS(NULL);
68        }
69        if ((i = openpam_findenv(pamh, name, strlen(name))) < 0)
70                RETURNS(NULL);
71        if ((str = strchr(pamh->env[i], '=')) == NULL)
72                RETURNS("");
73        RETURNS(str);
74}
75
76/**
77 * The =pam_getenv function returns the value of an environment variable.
78 * Its semantics are similar to those of =getenv, but it accesses the PAM
79 * context's environment list instead of the application's.
80 *
81 * >pam_getenvlist
82 * >pam_putenv
83 * >pam_setenv
84 */
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