1 /* $NetBSD: pam_end.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_end.c,v 1.4 2023/06/30 21:46:21 christos Exp $");
44
45 #include <stdlib.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 42
54 *
55 * Terminate the PAM transaction
56 */
57
58 int
pam_end(pam_handle_t * pamh,int status)59 pam_end(pam_handle_t *pamh,
60 int status)
61 {
62 pam_data_t *dp;
63 int i;
64
65 ENTER();
66 if (pamh == NULL)
67 RETURNC(PAM_BAD_HANDLE);
68
69 /* clear module data */
70 while ((dp = pamh->module_data) != NULL) {
71 if (dp->cleanup)
72 (dp->cleanup)(pamh, dp->data, status);
73 pamh->module_data = dp->next;
74 FREE(dp->name);
75 FREE(dp);
76 }
77
78 /* clear environment */
79 while (pamh->env_count) {
80 --pamh->env_count;
81 FREE(pamh->env[pamh->env_count]);
82 }
83 FREE(pamh->env);
84
85 /* clear chains */
86 openpam_clear_chains(pamh->chains);
87
88 /* clear items */
89 for (i = 0; i < PAM_NUM_ITEMS; ++i)
90 pam_set_item(pamh, i, NULL);
91
92 FREE(pamh);
93
94 RETURNC(PAM_SUCCESS);
95 }
96
97 /*
98 * Error codes:
99 *
100 * PAM_BAD_HANDLE
101 */
102
103 /**
104 * The =pam_end function terminates a PAM transaction and destroys the
105 * corresponding PAM context, releasing all resources allocated to it.
106 *
107 * The =status argument should be set to the error code returned by the
108 * last API call before the call to =pam_end.
109 */
110