1/*-
2 * Copyright (c) 2002-2003 Networks Associates Technology, Inc.
3 * Copyright (c) 2004-2007 Dag-Erling Smørgrav
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_item.c 408 2007-12-21 11:36:24Z des $
36 */
37
38#include <sys/param.h>
39
40#include <stdlib.h>
41#include <string.h>
42
43#include <security/pam_appl.h>
44
45#include "openpam_impl.h"
46
47/*
48 * XSSO 4.2.1
49 * XSSO 6 page 60
50 *
51 * Set authentication information
52 */
53
54int
55pam_set_item(pam_handle_t *pamh,
56	int item_type,
57	const void *item)
58{
59	void **slot, *tmp;
60	size_t nsize, osize;
61
62	ENTERI(item_type);
63	if (pamh == NULL)
64		RETURNC(PAM_SYSTEM_ERR);
65	slot = &pamh->item[item_type];
66	osize = nsize = 0;
67	switch (item_type) {
68	case PAM_SERVICE:
69	case PAM_USER:
70	case PAM_AUTHTOK:
71	case PAM_OLDAUTHTOK:
72	case PAM_TTY:
73	case PAM_RHOST:
74	case PAM_RUSER:
75	case PAM_USER_PROMPT:
76	case PAM_AUTHTOK_PROMPT:
77	case PAM_OLDAUTHTOK_PROMPT:
78		if (*slot != NULL)
79			osize = strlen(*slot) + 1;
80		if (item != NULL)
81			nsize = strlen(item) + 1;
82		break;
83	case PAM_REPOSITORY:
84		osize = nsize = sizeof(struct pam_repository);
85		break;
86	case PAM_CONV:
87		osize = nsize = sizeof(struct pam_conv);
88		break;
89	default:
90		RETURNC(PAM_SYMBOL_ERR);
91	}
92	if (*slot != NULL) {
93		memset(*slot, 0xd0, osize);
94		FREE(*slot);
95	}
96	if (item != NULL) {
97		if ((tmp = malloc(nsize)) == NULL)
98			RETURNC(PAM_BUF_ERR);
99		memcpy(tmp, item, nsize);
100	} else {
101		tmp = NULL;
102	}
103	*slot = tmp;
104	RETURNC(PAM_SUCCESS);
105}
106
107/*
108 * Error codes:
109 *
110 *	PAM_SYMBOL_ERR
111 *	PAM_SYSTEM_ERR
112 *	PAM_BUF_ERR
113 */
114
115/**
116 * The =pam_set_item function sets the item specified by the =item_type
117 * argument to a copy of the object pointed to by the =item argument.
118 * The item is stored in the PAM context specified by the =pamh argument.
119 * See =pam_get_item for a list of recognized item types.
120 */
121