1/*	$NetBSD: pam_get_data.c,v 1.2 2011/12/25 22:27:56 christos Exp $	*/
2
3/*-
4 * Copyright (c) 2002-2003 Networks Associates Technology, Inc.
5 * Copyright (c) 2004-2011 Dag-Erling Smørgrav
6 * All rights reserved.
7 *
8 * This software was developed for the FreeBSD Project by ThinkSec AS and
9 * Network Associates Laboratories, the Security Research Division of
10 * Network Associates, Inc.  under DARPA/SPAWAR contract N66001-01-C-8035
11 * ("CBOSS"), as part of the DARPA CHATS research program.
12 *
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
15 * are met:
16 * 1. Redistributions of source code must retain the above copyright
17 *    notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 *    notice, this list of conditions and the following disclaimer in the
20 *    documentation and/or other materials provided with the distribution.
21 * 3. The name of the author may not be used to endorse or promote
22 *    products derived from this software without specific prior written
23 *    permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * SUCH DAMAGE.
36 *
37 * Id: pam_get_data.c 444 2011-10-22 01:03:23Z des
38 */
39
40#ifdef HAVE_CONFIG_H
41# include "config.h"
42#endif
43
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 43
53 *
54 * Get module information
55 */
56
57int
58pam_get_data(const pam_handle_t *pamh,
59	const char *module_data_name,
60	const void **data)
61{
62	pam_data_t *dp;
63
64	ENTERS(module_data_name);
65	if (pamh == NULL)
66		RETURNC(PAM_SYSTEM_ERR);
67	for (dp = pamh->module_data; dp != NULL; dp = dp->next) {
68		if (strcmp(dp->name, module_data_name) == 0) {
69			*data = (void *)dp->data;
70			RETURNC(PAM_SUCCESS);
71		}
72	}
73	RETURNC(PAM_NO_MODULE_DATA);
74	/*NOTREACHED*/
75}
76
77/*
78 * Error codes:
79 *
80 *	PAM_SYSTEM_ERR
81 *	PAM_NO_MODULE_DATA
82 */
83
84/**
85 * The =pam_get_data function looks up the opaque object associated with
86 * the string specified by the =module_data_name argument, in the PAM
87 * context specified by the =pamh argument.
88 * A pointer to the object is stored in the location pointed to by the
89 * =data argument.
90 * If =pam_get_data fails, the =data argument is untouched.
91 *
92 * This function and its counterpart =pam_set_data are useful for managing
93 * data that are meaningful only to a particular service module.
94 */
95