2 * Copyright (c) 2002-2003 Networks Associates Technology, Inc.
5 * This software was developed for the FreeBSD Project by ThinkSec AS and
6 * Network Associates Laboratories, the Security Research Division of
7 * Network Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035
8 * ("CBOSS"), as part of the DARPA CHATS research program.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. The name of the author may not be used to endorse or promote
19 * products derived from this software without specific prior written
22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * $P4: //depot/projects/openpam/lib/pam_authenticate.c#15 $
37 #include <sys/param.h>
39 #include <security/pam_appl.h>
41 #include "openpam_impl.h"
47 * Perform authentication within the PAM framework
51 pam_authenticate(pam_handle_t *pamh,
57 if (flags & ~(PAM_SILENT|PAM_DISALLOW_NULL_AUTHTOK))
58 RETURNC(PAM_SYMBOL_ERR);
59 r = openpam_dispatch(pamh, PAM_SM_AUTHENTICATE, flags);
60 pam_set_item(pamh, PAM_AUTHTOK, NULL);
68 * =pam_sm_authenticate
74 * The =pam_authenticate function attempts to authenticate the user
75 * associated with the pam context specified by the =pamh argument.
77 * The application is free to call =pam_authenticate as many times as it
78 * wishes, but some modules may maintain an internal retry counter and
79 * return =PAM_MAXTRIES when it exceeds some preset or hardcoded limit.
81 * The =flags argument is the binary or of zero or more of the following
85 * Do not emit any messages.
86 * =PAM_DISALLOW_NULL_AUTHTOK:
87 * Fail if the user's authentication token is null.
89 * If any other bits are set, =pam_authenticate will return