pam_get_data.c revision 115619 
1/*-
2 * Copyright (c) 2002-2003 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_get_data.c#12 $
35 */
36
37#include <string.h>
38
39#include <security/pam_appl.h>
40
41#include "openpam_impl.h"
42
43/*
44 * XSSO 4.2.1
45 * XSSO 6 page 43
46 *
47 * Get module information
48 */
49
50int
51pam_get_data(pam_handle_t *pamh,
52	const char *module_data_name,
53	const void **data)
54{
55	pam_data_t *dp;
56
57	ENTERS(module_data_name);
58	if (pamh == NULL)
59		RETURNC(PAM_SYSTEM_ERR);
60	for (dp = pamh->module_data; dp != NULL; dp = dp->next)
61		if (strcmp(dp->name, module_data_name) == 0) {
62			*data = dp->data;
63			RETURNC(PAM_SUCCESS);
64		}
65	RETURNC(PAM_NO_MODULE_DATA);
66}
67
68/*
69 * Error codes:
70 *
71 *	PAM_SYSTEM_ERR
72 *	PAM_NO_MODULE_DATA
73 */
74
75/**
76 * The =pam_get_data function looks up the opaque object associated with
77 * the string specified by the =module_data_name argument, in the PAM
78 * context specified by the =pamh argument.
79 * A pointer to the object is stored in the location pointed to by the
80 * =data argument.
81 *
82 * This function and its counterpart =pam_set_data are useful for managing
83 * data that are meaningful only to a particular service module.
84 */
85