source: openpam/trunk/lib/libpam/pam_setenv.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: 3.0 KB
Line 
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_setenv.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 <stdio.h>
45#include <string.h>
46
47#include <security/pam_appl.h>
48
49#include "openpam_impl.h"
50#include "openpam_asprintf.h"
51
52/*
53 * OpenPAM extension
54 *
55 * Set the value of an environment variable
56 * Mirrors setenv(3)
57 */
58
59int
60pam_setenv(pam_handle_t *pamh,
61        const char *name,
62        const char *value,
63        int overwrite)
64{
65        char *env;
66        int r;
67
68        ENTER();
69
70        /* sanity checks */
71        if (*name == '\0' || strchr(name, '=') != NULL) {
72                errno = EINVAL;
73                RETURNC(PAM_SYSTEM_ERR);
74        }
75
76        /* is it already there? */
77        if (!overwrite && openpam_findenv(pamh, name, strlen(name)) >= 0)
78                RETURNC(PAM_SUCCESS);
79
80        /* set it... */
81        if (asprintf(&env, "%s=%s", name, value) < 0)
82                RETURNC(PAM_BUF_ERR);
83        r = pam_putenv(pamh, env);
84        FREE(env);
85        RETURNC(r);
86}
87
88/*
89 * Error codes:
90 *
91 *      =pam_putenv
92 *      PAM_SYSTEM_ERR
93 *      PAM_BUF_ERR
94 */
95
96/**
97 * The =pam_setenv function sets an environment variable.
98 * Its semantics are similar to those of =setenv, but it modifies the PAM
99 * context's environment list instead of the application's.
100 *
101 * >pam_getenv
102 * >pam_getenvlist
103 * >pam_putenv
104 */
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