1 /* $NetBSD: pam_chauthtok.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_chauthtok.c,v 1.4 2023/06/30 21:46:21 christos Exp $");
44
45 #include <sys/param.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 38
54 *
55 * Perform password related functions within the PAM framework
56 */
57
58 int
pam_chauthtok(pam_handle_t * pamh,int flags)59 pam_chauthtok(pam_handle_t *pamh,
60 int flags)
61 {
62 int r;
63
64 ENTER();
65 if (flags & ~(PAM_SILENT|PAM_CHANGE_EXPIRED_AUTHTOK))
66 RETURNC(PAM_BAD_CONSTANT);
67 r = openpam_dispatch(pamh, PAM_SM_CHAUTHTOK,
68 flags | PAM_PRELIM_CHECK);
69 if (r == PAM_SUCCESS)
70 r = openpam_dispatch(pamh, PAM_SM_CHAUTHTOK,
71 flags | PAM_UPDATE_AUTHTOK);
72 pam_set_item(pamh, PAM_OLDAUTHTOK, NULL);
73 pam_set_item(pamh, PAM_AUTHTOK, NULL);
74 RETURNC(r);
75 }
76
77 /*
78 * Error codes:
79 *
80 * =openpam_dispatch
81 * =pam_sm_chauthtok
82 * !PAM_IGNORE
83 * PAM_BAD_CONSTANT
84 */
85
86 /**
87 * The =pam_chauthtok function attempts to change the authentication token
88 * for the user associated with the pam context specified by the =pamh
89 * argument.
90 *
91 * The =flags argument is the binary or of zero or more of the following
92 * values:
93 *
94 * =PAM_SILENT:
95 * Do not emit any messages.
96 * =PAM_CHANGE_EXPIRED_AUTHTOK:
97 * Change only those authentication tokens that have expired.
98 *
99 * If any other bits are set, =pam_chauthtok will return =PAM_BAD_CONSTANT.
100 */
101