1/*-
2 * Copyright (c) 2002-2003 Networks Associates Technology, Inc.
3 * Copyright (c) 2004-2011 Dag-Erling Sm��rgrav
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_set_data.c 648 2013-03-05 17:54:27Z des $
36 */
37
38#ifdef HAVE_CONFIG_H
39# include "config.h"
40#endif
41
42#include <stdlib.h>
43#include <string.h>
44
45#include <security/pam_appl.h>
46
47#include "openpam_impl.h"
48
49/*
50 * XSSO 4.2.1
51 * XSSO 6 page 59
52 *
53 * Set module information
54 */
55
56int
57pam_set_data(pam_handle_t *pamh,
58	const char *module_data_name,
59	void *data,
60	void (*cleanup)(pam_handle_t *pamh,
61		void *data,
62		int pam_end_status))
63{
64	pam_data_t *dp;
65
66	ENTERS(module_data_name);
67	if (pamh == NULL)
68		RETURNC(PAM_SYSTEM_ERR);
69	for (dp = pamh->module_data; dp != NULL; dp = dp->next) {
70		if (strcmp(dp->name, module_data_name) == 0) {
71			if (dp->cleanup)
72				(dp->cleanup)(pamh, dp->data, PAM_SUCCESS);
73			dp->data = data;
74			dp->cleanup = cleanup;
75			RETURNC(PAM_SUCCESS);
76		}
77	}
78	if ((dp = malloc(sizeof *dp)) == NULL)
79		RETURNC(PAM_BUF_ERR);
80	if ((dp->name = strdup(module_data_name)) == NULL) {
81		FREE(dp);
82		RETURNC(PAM_BUF_ERR);
83	}
84	dp->data = data;
85	dp->cleanup = cleanup;
86	dp->next = pamh->module_data;
87	pamh->module_data = dp;
88	RETURNC(PAM_SUCCESS);
89}
90
91/*
92 * Error codes:
93 *
94 *	PAM_SYSTEM_ERR
95 *	PAM_BUF_ERR
96 */
97
98/**
99 * The =pam_set_data function associates a pointer to an opaque object
100 * with an arbitrary string specified by the =module_data_name argument,
101 * in the PAM context specified by the =pamh argument.
102 *
103 * If not =NULL, the =cleanup argument should point to a function
104 * responsible for releasing the resources associated with the object.
105 *
106 * This function and its counterpart =pam_get_data are useful for managing
107 * data that are meaningful only to a particular service module.
108 */
109