source: openpam/trunk/lib/pam_authenticate.c @ 435

Last change on this file since 435 was 435, checked in by Dag-Erling Smørgrav, 9 years ago

Update copyright dates.

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1/*-
2 * Copyright (c) 2002-2003 Networks Associates Technology, Inc.
3 * Copyright (c) 2004-2010 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_authenticate.c 435 2010-03-10 11:38:49Z des $
36 */
37
38#ifdef HAVE_CONFIG_H
39# include "config.h"
40#endif
41
42#include <sys/param.h>
43
44#include <security/pam_appl.h>
45
46#include "openpam_impl.h"
47
48/*
49 * XSSO 4.2.1
50 * XSSO 6 page 34
51 *
52 * Perform authentication within the PAM framework
53 */
54
55int
56pam_authenticate(pam_handle_t *pamh,
57        int flags)
58{
59        int r;
60
61        ENTER();
62        if (flags & ~(PAM_SILENT|PAM_DISALLOW_NULL_AUTHTOK))
63                RETURNC(PAM_SYMBOL_ERR);
64        r = openpam_dispatch(pamh, PAM_SM_AUTHENTICATE, flags);
65        pam_set_item(pamh, PAM_AUTHTOK, NULL);
66        RETURNC(r);
67}
68
69/*
70 * Error codes:
71 *
72 *      =openpam_dispatch
73 *      =pam_sm_authenticate
74 *      !PAM_IGNORE
75 *      PAM_SYMBOL_ERR
76 */
77
78/**
79 * The =pam_authenticate function attempts to authenticate the user
80 * associated with the pam context specified by the =pamh argument.
81 *
82 * The application is free to call =pam_authenticate as many times as it
83 * wishes, but some modules may maintain an internal retry counter and
84 * return =PAM_MAXTRIES when it exceeds some preset or hardcoded limit.
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_DISALLOW_NULL_AUTHTOK:
92 *              Fail if the user's authentication token is null.
93 *
94 * If any other bits are set, =pam_authenticate will return
95 * =PAM_SYMBOL_ERR.
96 */
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