pam_get_data.c revision 125647 
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#13 $
35 */
36
37#include <stdint.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 43
47 *
48 * Get module information
49 */
50
51int
52pam_get_data(pam_handle_t *pamh,
53	const char *module_data_name,
54	void **data)
55{
56	pam_data_t *dp;
57
58	ENTERS(module_data_name);
59	if (pamh == NULL)
60		RETURNC(PAM_SYSTEM_ERR);
61	for (dp = pamh->module_data; dp != NULL; dp = dp->next) {
62		if (strcmp(dp->name, module_data_name) == 0) {
63			*data = (void *)(intptr_t)dp->data;
64			RETURNC(PAM_SUCCESS);
65		}
66	}
67	RETURNC(PAM_NO_MODULE_DATA);
68}
69
70/*
71 * Error codes:
72 *
73 *	PAM_SYSTEM_ERR
74 *	PAM_NO_MODULE_DATA
75 */
76
77/**
78 * The =pam_get_data function looks up the opaque object associated with
79 * the string specified by the =module_data_name argument, in the PAM
80 * context specified by the =pamh argument.
81 * A pointer to the object is stored in the location pointed to by the
82 * =data argument.
83 *
84 * This function and its counterpart =pam_set_data are useful for managing
85 * data that are meaningful only to a particular service module.
86 */
87