1 /* $OpenBSD: auth2-none.c,v 1.12 2006/08/03 03:34:41 deraadt Exp $ */
3 * Copyright (c) 2000 Markus Friedl. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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.
28 #include <sys/types.h>
48 #include "monitor_wrap.h"
51 extern ServerOptions options;
53 /* "none" is allowed only one time */
54 static int none_enabled = 1;
57 auth2_read_banner(void)
64 if ((fd = open(options.banner, O_RDONLY)) == -1)
66 if (fstat(fd, &st) == -1) {
70 if (st.st_size > 1*1024*1024) {
75 len = (size_t)st.st_size; /* truncate */
76 banner = xmalloc(len + 1);
77 n = atomicio(read, fd, banner, len);
90 userauth_send_banner(const char *msg)
92 if (datafellows & SSH_BUG_BANNER)
95 packet_start(SSH2_MSG_USERAUTH_BANNER);
96 packet_put_cstring(msg);
97 packet_put_cstring(""); /* language, unused */
99 debug("%s: sent", __func__);
103 userauth_banner(void)
107 if (options.banner == NULL || (datafellows & SSH_BUG_BANNER))
110 if ((banner = PRIVSEP(auth2_read_banner())) == NULL)
112 userauth_send_banner(banner);
120 userauth_none(Authctxt *authctxt)
126 if (check_nt_auth(1, authctxt->pw) == 0)
129 if (options.password_authentication)
130 return (PRIVSEP(auth_password(authctxt, "")));
134 Authmethod method_none = {