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 <security/pam_appl.h>
43
44 #include "openpam_impl.h"
45
46 /*
47 * XSSO 4.2.1
48 * XSSO 6 page 38
49 *
50 * Perform password related functions within the PAM framework
51 */
52
53 int
pam_chauthtok(pam_handle_t * pamh,int flags)54 pam_chauthtok(pam_handle_t *pamh,
55 int flags)
56 {
57 int r;
58
59 ENTER();
60 if (flags & ~(PAM_SILENT|PAM_CHANGE_EXPIRED_AUTHTOK))
61 RETURNC(PAM_BAD_CONSTANT);
62 r = openpam_dispatch(pamh, PAM_SM_CHAUTHTOK,
63 flags | PAM_PRELIM_CHECK);
64 if (r == PAM_SUCCESS)
65 r = openpam_dispatch(pamh, PAM_SM_CHAUTHTOK,
66 flags | PAM_UPDATE_AUTHTOK);
67 pam_set_item(pamh, PAM_OLDAUTHTOK, NULL);
68 pam_set_item(pamh, PAM_AUTHTOK, NULL);
69 RETURNC(r);
70 }
71
72 /*
73 * Error codes:
74 *
75 * =openpam_dispatch
76 * =pam_sm_chauthtok
77 * !PAM_IGNORE
78 * PAM_BAD_CONSTANT
79 */
80
81 /**
82 * The =pam_chauthtok function attempts to change the authentication token
83 * for the user associated with the pam context specified by the =pamh
84 * argument.
85 *
86 * The =flags argument is the binary or of zero or more of the following
87 * values:
88 *
89 * =PAM_SILENT:
90 * Do not emit any messages.
91 * =PAM_CHANGE_EXPIRED_AUTHTOK:
92 * Change only those authentication tokens that have expired.
93 *
94 * If any other bits are set, =pam_chauthtok will return =PAM_BAD_CONSTANT.
95 */
96