1/*-
2 * Copyright (c) 2002-2003 Networks Associates Technology, Inc.
3 * Copyright (c) 2004-2017 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
36#ifdef HAVE_CONFIG_H
37# include "config.h"
38#endif
39
40#include <sys/param.h>
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 60
52 *
53 * Set authentication information
54 */
55
56int
57pam_set_item(pam_handle_t *pamh,
58	int item_type,
59	const void *item)
60{
61	void **slot;
62	size_t nsize, osize;
63
64	ENTERI(item_type);
65	slot = &pamh->item[item_type];
66	osize = nsize = 0;
67	switch (item_type) {
68	case PAM_SERVICE:
69		/* set once only, by pam_start() */
70		if (*slot != NULL && item != NULL)
71			RETURNC(PAM_BAD_ITEM);
72		/* fall through */
73	case PAM_USER:
74	case PAM_AUTHTOK:
75	case PAM_OLDAUTHTOK:
76	case PAM_TTY:
77	case PAM_RHOST:
78	case PAM_RUSER:
79	case PAM_USER_PROMPT:
80	case PAM_AUTHTOK_PROMPT:
81	case PAM_OLDAUTHTOK_PROMPT:
82	case PAM_HOST:
83		if (*slot != NULL)
84			osize = strlen(*slot) + 1;
85		if (item != NULL)
86			nsize = strlen(item) + 1;
87		break;
88	case PAM_REPOSITORY:
89		osize = nsize = sizeof(struct pam_repository);
90		break;
91	case PAM_CONV:
92		osize = nsize = sizeof(struct pam_conv);
93		break;
94	default:
95		RETURNC(PAM_BAD_ITEM);
96	}
97	if (*slot != NULL) {
98		memset(*slot, 0xd0, osize);
99		FREE(*slot);
100	}
101	if (item != NULL) {
102		if ((*slot = malloc(nsize)) == NULL)
103			RETURNC(PAM_BUF_ERR);
104		memcpy(*slot, item, nsize);
105	} else {
106		*slot = NULL;
107	}
108	RETURNC(PAM_SUCCESS);
109}
110
111/*
112 * Error codes:
113 *
114 *	PAM_BAD_ITEM
115 *	PAM_BUF_ERR
116 */
117
118/**
119 * The =pam_set_item function sets the item specified by the =item_type
120 * argument to a copy of the object pointed to by the =item argument.
121 * The item is stored in the PAM context specified by the =pamh argument.
122 * See =pam_get_item for a list of recognized item types.
123 */
124