2 * Copyright (c) 2000 Markus Friedl. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
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.
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.
26 RCSID("$OpenBSD: auth2-none.c,v 1.7 2004/05/11 19:01:43 deraadt Exp $");
36 #include "monitor_wrap.h"
39 extern ServerOptions options;
41 /* "none" is allowed only one time */
42 static int none_enabled = 1;
45 auth2_read_banner(void)
52 if ((fd = open(options.banner, O_RDONLY)) == -1)
54 if (fstat(fd, &st) == -1) {
58 if (st.st_size > 1*1024*1024) {
63 len = (size_t)st.st_size; /* truncate */
64 banner = xmalloc(len + 1);
65 n = atomicio(read, fd, banner, len);
78 userauth_send_banner(const char *msg)
80 if (datafellows & SSH_BUG_BANNER)
83 packet_start(SSH2_MSG_USERAUTH_BANNER);
84 packet_put_cstring(msg);
85 packet_put_cstring(""); /* language, unused */
87 debug("%s: sent", __func__);
95 if (options.banner == NULL || (datafellows & SSH_BUG_BANNER))
98 if ((banner = PRIVSEP(auth2_read_banner())) == NULL)
100 userauth_send_banner(banner);
108 userauth_none(Authctxt *authctxt)
114 if (check_nt_auth(1, authctxt->pw) == 0)
117 if (options.password_authentication)
118 return (PRIVSEP(auth_password(authctxt, "")));
122 Authmethod method_none = {