1 /*-
2 * Copyright (c) 2002-2003 Networks Associates Technology, Inc.
3 * Copyright (c) 2004-2011 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 648 2013-03-05 17:54:27Z des $
36 */
37
38 #ifdef HAVE_CONFIG_H
39 # include "config.h"
40 #endif
41
42 #include <sys/param.h>
43
44 #include <stdlib.h>
45 #include <string.h>
46
47 #include <security/pam_appl.h>
48
49 #include "openpam_impl.h"
50
51 /*
52 * XSSO 4.2.1
53 * XSSO 6 page 60
54 *
55 * Set authentication information
56 */
57
58 int
pam_set_item(pam_handle_t * pamh,int item_type,const void * item)59 pam_set_item(pam_handle_t *pamh,
60 int item_type,
61 const void *item)
62 {
63 void **slot, *tmp;
64 size_t nsize, osize;
65
66 ENTERI(item_type);
67 if (pamh == NULL)
68 RETURNC(PAM_SYSTEM_ERR);
69 slot = &pamh->item[item_type];
70 osize = nsize = 0;
71 switch (item_type) {
72 case PAM_SERVICE:
73 /* set once only, by pam_start() */
74 if (*slot != NULL)
75 RETURNC(PAM_SYSTEM_ERR);
76 /* fall through */
77 case PAM_USER:
78 case PAM_AUTHTOK:
79 case PAM_OLDAUTHTOK:
80 case PAM_TTY:
81 case PAM_RHOST:
82 case PAM_RUSER:
83 case PAM_USER_PROMPT:
84 case PAM_AUTHTOK_PROMPT:
85 case PAM_OLDAUTHTOK_PROMPT:
86 case PAM_HOST:
87 if (*slot != NULL)
88 osize = strlen(*slot) + 1;
89 if (item != NULL)
90 nsize = strlen(item) + 1;
91 break;
92 case PAM_REPOSITORY:
93 osize = nsize = sizeof(struct pam_repository);
94 break;
95 case PAM_CONV:
96 osize = nsize = sizeof(struct pam_conv);
97 break;
98 default:
99 RETURNC(PAM_SYMBOL_ERR);
100 }
101 if (*slot != NULL) {
102 memset(*slot, 0xd0, osize);
103 FREE(*slot);
104 }
105 if (item != NULL) {
106 if ((tmp = malloc(nsize)) == NULL)
107 RETURNC(PAM_BUF_ERR);
108 memcpy(tmp, item, nsize);
109 } else {
110 tmp = NULL;
111 }
112 *slot = tmp;
113 RETURNC(PAM_SUCCESS);
114 }
115
116 /*
117 * Error codes:
118 *
119 * PAM_SYMBOL_ERR
120 * PAM_SYSTEM_ERR
121 * PAM_BUF_ERR
122 */
123
124 /**
125 * The =pam_set_item function sets the item specified by the =item_type
126 * argument to a copy of the object pointed to by the =item argument.
127 * The item is stored in the PAM context specified by the =pamh argument.
128 * See =pam_get_item for a list of recognized item types.
129 */
130