source: openpam/trunk/lib/pam_setenv.c @ 200

Last change on this file since 200 was 187, checked in by Dag-Erling Smørgrav, 18 years ago

Instrument entry and exit points.

File size: 2.9 KB
Line 
1/*-
2 * Copyright (c) 2002 Networks Associates Technology, Inc.
3 * All rights reserved.
4 *
5 * This software was developed for the FreeBSD Project by ThinkSec AS and
6 * Network Associates Laboratories, the Security Research Division of
7 * Network Associates, Inc.  under DARPA/SPAWAR contract N66001-01-C-8035
8 * ("CBOSS"), as part of the 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 * $P4: //depot/projects/openpam/lib/pam_setenv.c#8 $
35 */
36
37#include <stdlib.h>
38#include <stdio.h>
39#include <string.h>
40
41#include <security/pam_appl.h>
42
43#include "openpam_impl.h"
44
45/*
46 * OpenPAM extension
47 *
48 * Set the value of an environment variable
49 * Mirrors setenv(3)
50 */
51
52int
53pam_setenv(pam_handle_t *pamh,
54        const char *name,
55        const char *value,
56        int overwrite)
57{
58        char *env;
59        int r;
60
61        ENTER();
62        if (pamh == NULL)
63                RETURNC(PAM_SYSTEM_ERR);
64
65        /* sanity checks */
66        if (name == NULL || value == NULL || strchr(name, '=') != NULL)
67                RETURNC(PAM_SYSTEM_ERR);
68
69        /* is it already there? */
70        if (!overwrite && openpam_findenv(pamh, name, strlen(name)) != -1)
71                RETURNC(PAM_SUCCESS);
72
73        /* set it... */
74        if ((env = malloc(strlen(name) + strlen(value) + 2)) == NULL)
75                RETURNC(PAM_BUF_ERR);
76        sprintf(env, "%s=%s", name, value);
77        r = pam_putenv(pamh, env);
78        free(env);
79        RETURNC(r);
80}
81
82/*
83 * Error codes:
84 *
85 *      =pam_putenv
86 *      PAM_SYSTEM_ERR
87 *      PAM_BUF_ERR
88 */
89
90/**
91 * The =pam_setenv function sets a environment variable.
92 * Its semantics are similar to those of =setenv, but it modifies the PAM
93 * context's environment list instead of the application's.
94 *
95 * >pam_getenv
96 * >pam_getenvlist
97 * >pam_putenv
98 */
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