1 /* $NetBSD: pam_set_data.c,v 1.4 2023/06/30 21:46:21 christos Exp $ */
2
3 /*-
4 * Copyright (c) 2002-2003 Networks Associates Technology, Inc.
5 * Copyright (c) 2004-2017 Dag-Erling Smørgrav
6 * All rights reserved.
7 *
8 * This software was developed for the FreeBSD Project by ThinkSec AS and
9 * Network Associates Laboratories, the Security Research Division of
10 * Network Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035
11 * ("CBOSS"), as part of the DARPA CHATS research program.
12 *
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
15 * are met:
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. The name of the author may not be used to endorse or promote
22 * products derived from this software without specific prior written
23 * permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * SUCH DAMAGE.
36 */
37
38 #ifdef HAVE_CONFIG_H
39 # include "config.h"
40 #endif
41
42 #include <sys/cdefs.h>
43 __RCSID("$NetBSD: pam_set_data.c,v 1.4 2023/06/30 21:46:21 christos Exp $");
44
45 #include <stdlib.h>
46 #include <string.h>
47
48 #include <security/pam_appl.h>
49
50 #include "openpam_impl.h"
51
52 /*
53 * XSSO 4.2.1
54 * XSSO 6 page 59
55 *
56 * Set module information
57 */
58
59 int
pam_set_data(pam_handle_t * pamh,const char * module_data_name,void * data,void (* cleanup)(pam_handle_t * pamh,void * data,int pam_end_status))60 pam_set_data(pam_handle_t *pamh,
61 const char *module_data_name,
62 void *data,
63 void (*cleanup)(pam_handle_t *pamh,
64 void *data,
65 int pam_end_status))
66 {
67 pam_data_t *dp;
68
69 ENTERS(module_data_name);
70 for (dp = pamh->module_data; dp != NULL; dp = dp->next) {
71 if (strcmp(dp->name, module_data_name) == 0) {
72 if (dp->cleanup)
73 (dp->cleanup)(pamh, dp->data, PAM_SUCCESS);
74 dp->data = data;
75 dp->cleanup = cleanup;
76 RETURNC(PAM_SUCCESS);
77 }
78 }
79 if ((dp = malloc(sizeof *dp)) == NULL)
80 RETURNC(PAM_BUF_ERR);
81 if ((dp->name = strdup(module_data_name)) == NULL) {
82 FREE(dp);
83 RETURNC(PAM_BUF_ERR);
84 }
85 dp->data = data;
86 dp->cleanup = cleanup;
87 dp->next = pamh->module_data;
88 pamh->module_data = dp;
89 RETURNC(PAM_SUCCESS);
90 }
91
92 /*
93 * Error codes:
94 *
95 * PAM_SYSTEM_ERR
96 * PAM_BUF_ERR
97 */
98
99 /**
100 * The =pam_set_data function associates a pointer to an opaque object
101 * with an arbitrary string specified by the =module_data_name argument,
102 * in the PAM context specified by the =pamh argument.
103 *
104 * If not =NULL, the =cleanup argument should point to a function
105 * responsible for releasing the resources associated with the object.
106 *
107 * This function and its counterpart =pam_get_data are useful for managing
108 * data that are meaningful only to a particular service module.
109 *
110 * >openpam_free_data
111 */
112