auth2-passwd.c revision 146998 
1/*
2 * Copyright (c) 2000 Markus Friedl.  All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
14 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
15 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
16 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
17 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
18 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
19 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
20 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23 */
24
25#include "includes.h"
26RCSID("$OpenBSD: auth2-passwd.c,v 1.5 2003/12/31 00:24:50 dtucker Exp $");
27
28#include "xmalloc.h"
29#include "packet.h"
30#include "log.h"
31#include "auth.h"
32#include "monitor_wrap.h"
33#include "servconf.h"
34
35/* import */
36extern ServerOptions options;
37
38static int
39userauth_passwd(Authctxt *authctxt)
40{
41	char *password, *newpass;
42	int authenticated = 0;
43	int change;
44	u_int len, newlen;
45
46	change = packet_get_char();
47	password = packet_get_string(&len);
48	if (change) {
49		/* discard new password from packet */
50		newpass = packet_get_string(&newlen);
51		memset(newpass, 0, newlen);
52		xfree(newpass);
53	}
54	packet_check_eom();
55
56	if (change)
57		logit("password change not supported");
58	else if (PRIVSEP(auth_password(authctxt, password)) == 1)
59		authenticated = 1;
60#ifdef HAVE_CYGWIN
61	if (check_nt_auth(1, authctxt->pw) == 0)
62		authenticated = 0;
63#endif
64	memset(password, 0, len);
65	xfree(password);
66	return authenticated;
67}
68
69Authmethod method_passwd = {
70	"password",
71	userauth_passwd,
72	&options.password_authentication
73};
74