source: openpam/trunk/lib/pam_putenv.c @ 417

Last change on this file since 417 was 417, checked in by des, 7 years ago

Update copyright, and coincidentially root out the last remaining vestige
of iso-8859-1 in favor of utf-8.

  • Property svn:keywords set to Id
File size: 3.3 KB
Line 
1/*-
2 * Copyright (c) 2002-2003 Networks Associates Technology, Inc.
3 * Copyright (c) 2004-2008 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 * $Id$
36 */
37
38#ifdef HAVE_CONFIG_H
39# include "config.h"
40#endif
41
42#include <stdlib.h>
43#include <string.h>
44
45#include <security/pam_appl.h>
46
47#include "openpam_impl.h"
48
49/*
50 * XSSO 4.2.1
51 * XSSO 6 page 56
52 *
53 * Set the value of an environment variable
54 */
55
56int
57pam_putenv(pam_handle_t *pamh,
58        const char *namevalue)
59{
60        char **env, *p;
61        int i;
62
63        ENTER();
64        if (pamh == NULL)
65                RETURNC(PAM_SYSTEM_ERR);
66
67        /* sanity checks */
68        if (namevalue == NULL || (p = strchr(namevalue, '=')) == NULL)
69                RETURNC(PAM_SYSTEM_ERR);
70
71        /* see if the variable is already in the environment */
72        if ((i = openpam_findenv(pamh, namevalue, p - namevalue)) >= 0) {
73                if ((p = strdup(namevalue)) == NULL)
74                        RETURNC(PAM_BUF_ERR);
75                FREE(pamh->env[i]);
76                pamh->env[i] = p;
77                RETURNC(PAM_SUCCESS);
78        }
79
80        /* grow the environment list if necessary */
81        if (pamh->env_count == pamh->env_size) {
82                env = realloc(pamh->env,
83                    sizeof(char *) * (pamh->env_size * 2 + 1));
84                if (env == NULL)
85                        RETURNC(PAM_BUF_ERR);
86                pamh->env = env;
87                pamh->env_size = pamh->env_size * 2 + 1;
88        }
89
90        /* add the variable at the end */
91        if ((pamh->env[pamh->env_count] = strdup(namevalue)) == NULL)
92                RETURNC(PAM_BUF_ERR);
93        ++pamh->env_count;
94        RETURNC(PAM_SUCCESS);
95}
96
97/*
98 * Error codes:
99 *
100 *      PAM_SYSTEM_ERR
101 *      PAM_BUF_ERR
102 */
103
104/**
105 * The =pam_putenv function sets a environment variable.
106 * Its semantics are similar to those of =putenv, but it modifies the PAM
107 * context's environment list instead of the application's.
108 *
109 * >pam_getenv
110 * >pam_getenvlist
111 * >pam_setenv
112 */
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