source: openpam/trunk/lib/pam_putenv.c @ 62

Last change on this file since 62 was 16, checked in by Dag-Erling Smørgrav, 19 years ago

Whitespace cleanup + keyword expansion sweep.

Sponsored by: DARPA, NAI Labs

  • Property svn:keywords set to Id LastChangedRevision HeadURL LastChangedDate LastChangedBy
File size: 2.8 KB
Line 
1/*-
2 * Copyright (c) 2002 Networks Associates Technologies, Inc.
3 * All rights reserved.
4 *
5 * This software was developed for the FreeBSD Project by ThinkSec AS and
6 * NAI Labs, the Security Research Division of Network Associates, Inc.
7 * under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the
8 * DARPA CHATS research program.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 * 3. The name of the author may not be used to endorse or promote
19 *    products derived from this software without specific prior written
20 *    permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
34 * $Id: pam_putenv.c 16 2002-02-01 22:20:07Z des $
35 */
36
37#include <stdlib.h>
38#include <string.h>
39
40#include <security/pam_appl.h>
41
42#include "openpam_impl.h"
43
44/*
45 * XSSO 4.2.1
46 * XSSO 6 page 56
47 *
48 * Set the value of an environment variable
49 */
50
51int
52pam_putenv(pam_handle_t *pamh,
53        const char *namevalue)
54{
55        char **env, *p;
56        int i;
57
58        if (pamh == NULL)
59                return (PAM_SYSTEM_ERR);
60
61        /* sanity checks */
62        if (namevalue == NULL || (p = strchr(namevalue, '=')) == NULL)
63                return (PAM_SYSTEM_ERR);
64
65        /* see if the variable is already in the environment */
66        if ((i = openpam_findenv(pamh, namevalue, p - namevalue)) != -1) {
67                if ((p = strdup(namevalue)) == NULL)
68                        return (PAM_BUF_ERR);
69                free(pamh->env[i]);
70                pamh->env[i] = p;
71                return (PAM_SUCCESS);
72        }
73
74        /* grow the environment list if necessary */
75        if (pamh->env_count == pamh->env_size) {
76                env = realloc(pamh->env, pamh->env_size * 2 + 1);
77                if (env == NULL)
78                        return (PAM_BUF_ERR);
79                pamh->env = env;
80                pamh->env_size = pamh->env_size * 2 + 1;
81        }
82
83        /* add the variable at the end */
84        if ((pamh->env[pamh->env_count] = strdup(namevalue)) == NULL)
85                return (PAM_BUF_ERR);
86        ++pamh->env_count;
87        return (PAM_SUCCESS);
88}
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