blob: c8c6c74a934752750513f231f09513e381d33597 [file] [log] [blame]
Damien Millerbda3eca2010-06-26 10:01:33 +10001/* $OpenBSD: auth2-none.c,v 1.16 2010/06/25 08:46:17 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"
Damien Millerf17883e2006-03-15 11:45:54 +110027
28#include <sys/types.h>
29#include <sys/stat.h>
Darren Tucker1a3d6e72006-08-05 18:46:47 +100030#include <sys/uio.h>
Ben Lindstrom855bf3a2002-06-06 20:27:55 +000031
Damien Miller57cf6382006-07-10 21:13:46 +100032#include <fcntl.h>
Damien Millerded319c2006-09-01 15:38:36 +100033#include <stdarg.h>
Damien Miller4890e532007-09-17 11:57:38 +100034#include <string.h>
Darren Tucker4230a5d2008-07-02 22:56:09 +100035#include <unistd.h>
Damien Miller57cf6382006-07-10 21:13:46 +100036
Darren Tucker4230a5d2008-07-02 22:56:09 +100037#include "atomicio.h"
Ben Lindstrom855bf3a2002-06-06 20:27:55 +000038#include "xmalloc.h"
Damien Millerd7834352006-08-05 12:39:39 +100039#include "key.h"
40#include "hostfile.h"
41#include "auth.h"
Ben Lindstrom855bf3a2002-06-06 20:27:55 +000042#include "packet.h"
43#include "log.h"
Damien Millerd7834352006-08-05 12:39:39 +100044#include "buffer.h"
Ben Lindstrom855bf3a2002-06-06 20:27:55 +000045#include "servconf.h"
Ben Lindstrom855bf3a2002-06-06 20:27:55 +000046#include "compat.h"
47#include "ssh2.h"
Damien Millerd7834352006-08-05 12:39:39 +100048#ifdef GSSAPI
49#include "ssh-gss.h"
50#endif
Ben Lindstrom855bf3a2002-06-06 20:27:55 +000051#include "monitor_wrap.h"
52
53/* import */
54extern ServerOptions options;
55
56/* "none" is allowed only one time */
57static int none_enabled = 1;
58
Ben Lindstrom855bf3a2002-06-06 20:27:55 +000059static int
60userauth_none(Authctxt *authctxt)
61{
62 none_enabled = 0;
63 packet_check_eom();
Damien Millerbda3eca2010-06-26 10:01:33 +100064 if (options.permit_empty_passwd && options.password_authentication)
Darren Tucker4b609662003-08-03 00:05:01 +100065 return (PRIVSEP(auth_password(authctxt, "")));
66 return (0);
Ben Lindstrom855bf3a2002-06-06 20:27:55 +000067}
68
69Authmethod method_none = {
70 "none",
71 userauth_none,
72 &none_enabled
73};