1/*	$NetBSD: auth2-passwd.c,v 1.2 2009/06/07 22:38:46 christos Exp $	*/
2/* $OpenBSD: auth2-passwd.c,v 1.9 2006/08/03 03:34:41 deraadt Exp $ */
3/*
4 * Copyright (c) 2000 Markus Friedl.  All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#include "includes.h"
28__RCSID("$NetBSD: auth2-passwd.c,v 1.2 2009/06/07 22:38:46 christos Exp $");
29#include <sys/types.h>
30
31#include <string.h>
32#include <stdarg.h>
33
34#include "xmalloc.h"
35#include "packet.h"
36#include "log.h"
37#include "key.h"
38#include "hostfile.h"
39#include "auth.h"
40#include "buffer.h"
41#ifdef GSSAPI
42#include "ssh-gss.h"
43#endif
44#include "monitor_wrap.h"
45#include "servconf.h"
46
47/* import */
48extern ServerOptions options;
49
50static int
51userauth_passwd(Authctxt *authctxt)
52{
53	char *password, *newpass;
54	int authenticated = 0;
55	int change;
56	u_int len, newlen;
57
58	change = packet_get_char();
59	password = packet_get_string(&len);
60	if (change) {
61		/* discard new password from packet */
62		newpass = packet_get_string(&newlen);
63		memset(newpass, 0, newlen);
64		xfree(newpass);
65	}
66	packet_check_eom();
67
68	if (change)
69		logit("password change not supported");
70	else if (PRIVSEP(auth_password(authctxt, password)) == 1)
71		authenticated = 1;
72	memset(password, 0, len);
73	xfree(password);
74	return authenticated;
75}
76
77Authmethod method_passwd = {
78	"password",
79	userauth_passwd,
80	&options.password_authentication
81};
82