blob: 21bc5047dbb8c586c6a2f43b80c463809e1e3f44 [file] [log] [blame]
Darren Tuckera627d422013-06-02 07:31:17 +10001/* $OpenBSD: auth2-passwd.c,v 1.10 2013/05/17 00:13:13 djm Exp $ */
Ben Lindstrom855bf3a2002-06-06 20:27:55 +00002/*
3 * Copyright (c) 2000 Markus Friedl. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "includes.h"
Ben Lindstrom855bf3a2002-06-06 20:27:55 +000027
Damien Millerd7834352006-08-05 12:39:39 +100028#include <sys/types.h>
29
Damien Millere3476ed2006-07-24 14:13:33 +100030#include <string.h>
Damien Millerd7834352006-08-05 12:39:39 +100031#include <stdarg.h>
Damien Millere3476ed2006-07-24 14:13:33 +100032
Ben Lindstrom855bf3a2002-06-06 20:27:55 +000033#include "xmalloc.h"
34#include "packet.h"
35#include "log.h"
Damien Millerd7834352006-08-05 12:39:39 +100036#include "key.h"
37#include "hostfile.h"
Ben Lindstrom855bf3a2002-06-06 20:27:55 +000038#include "auth.h"
Damien Millerd7834352006-08-05 12:39:39 +100039#include "buffer.h"
40#ifdef GSSAPI
41#include "ssh-gss.h"
42#endif
Ben Lindstrom855bf3a2002-06-06 20:27:55 +000043#include "monitor_wrap.h"
44#include "servconf.h"
45
46/* import */
47extern ServerOptions options;
48
49static int
50userauth_passwd(Authctxt *authctxt)
51{
Darren Tuckerea287062003-12-31 11:43:24 +110052 char *password, *newpass;
Ben Lindstrom855bf3a2002-06-06 20:27:55 +000053 int authenticated = 0;
54 int change;
Darren Tuckerea287062003-12-31 11:43:24 +110055 u_int len, newlen;
56
Ben Lindstrom855bf3a2002-06-06 20:27:55 +000057 change = packet_get_char();
Darren Tuckerea287062003-12-31 11:43:24 +110058 password = packet_get_string(&len);
59 if (change) {
60 /* discard new password from packet */
61 newpass = packet_get_string(&newlen);
62 memset(newpass, 0, newlen);
Darren Tuckera627d422013-06-02 07:31:17 +100063 free(newpass);
Darren Tuckerea287062003-12-31 11:43:24 +110064 }
65 packet_check_eom();
66
Ben Lindstrom855bf3a2002-06-06 20:27:55 +000067 if (change)
Damien Miller996acd22003-04-09 20:59:48 +100068 logit("password change not supported");
Damien Miller47656792004-09-11 22:42:09 +100069 else if (PRIVSEP(auth_password(authctxt, password)) == 1)
Ben Lindstrom855bf3a2002-06-06 20:27:55 +000070 authenticated = 1;
Ben Lindstrom855bf3a2002-06-06 20:27:55 +000071 memset(password, 0, len);
Darren Tuckera627d422013-06-02 07:31:17 +100072 free(password);
Ben Lindstrom855bf3a2002-06-06 20:27:55 +000073 return authenticated;
74}
75
76Authmethod method_passwd = {
77 "password",
78 userauth_passwd,
79 &options.password_authentication
80};