1/*-
2 * Copyright (c) 2002-2003 Networks Associates Technology, Inc.
3 * Copyright (c) 2004-2007 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 * $Id: pam_chauthtok.c 408 2007-12-21 11:36:24Z des $
36 */
37
38#include <sys/param.h>
39
40#include <security/pam_appl.h>
41
42#include "openpam_impl.h"
43
44/*
45 * XSSO 4.2.1
46 * XSSO 6 page 38
47 *
48 * Perform password related functions within the PAM framework
49 */
50
51int
52pam_chauthtok(pam_handle_t *pamh,
53	int flags)
54{
55	int r;
56
57	ENTER();
58	if (flags & ~(PAM_SILENT|PAM_CHANGE_EXPIRED_AUTHTOK))
59		RETURNC(PAM_SYMBOL_ERR);
60	r = openpam_dispatch(pamh, PAM_SM_CHAUTHTOK,
61	    flags | PAM_PRELIM_CHECK);
62	if (r == PAM_SUCCESS)
63		r = openpam_dispatch(pamh, PAM_SM_CHAUTHTOK,
64		    flags | PAM_UPDATE_AUTHTOK);
65	pam_set_item(pamh, PAM_OLDAUTHTOK, NULL);
66	pam_set_item(pamh, PAM_AUTHTOK, NULL);
67	RETURNC(r);
68}
69
70/*
71 * Error codes:
72 *
73 *	=openpam_dispatch
74 *	=pam_sm_chauthtok
75 *	!PAM_IGNORE
76 *	PAM_SYMBOL_ERR
77 */
78
79/**
80 * The =pam_chauthtok function attempts to change the authentication token
81 * for the user associated with the pam context specified by the =pamh
82 * argument.
83 *
84 * The =flags argument is the binary or of zero or more of the following
85 * values:
86 *
87 *	=PAM_SILENT:
88 *		Do not emit any messages.
89 *	=PAM_CHANGE_EXPIRED_AUTHTOK:
90 *		Change only those authentication tokens that have expired.
91 *
92 * If any other bits are set, =pam_chauthtok will return =PAM_SYMBOL_ERR.
93 */
94