1 /*-
2 * Copyright (c) 2002-2003 Networks Associates Technology, Inc.
3 * Copyright (c) 2004-2017 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
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
56 int
pam_set_item(pam_handle_t * pamh,int item_type,const void * item)57 pam_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