1 /* $OpenBSD: auth2-none.c,v 1.14 2007/08/23 03:22:16 djm 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>
51 #include "monitor_wrap.h"
54 extern ServerOptions options;
56 /* "none" is allowed only one time */
57 static int none_enabled = 1;
60 auth2_read_banner(void)
67 if ((fd = open(options.banner, O_RDONLY)) == -1)
69 if (fstat(fd, &st) == -1) {
73 if (st.st_size > 1*1024*1024) {
78 len = (size_t)st.st_size; /* truncate */
79 banner = xmalloc(len + 1);
80 n = atomicio(read, fd, banner, len);
93 userauth_send_banner(const char *msg)
95 if (datafellows & SSH_BUG_BANNER)
98 packet_start(SSH2_MSG_USERAUTH_BANNER);
99 packet_put_cstring(msg);
100 packet_put_cstring(""); /* language, unused */
102 debug("%s: sent", __func__);
106 userauth_banner(void)
110 if (options.banner == NULL ||
111 strcasecmp(options.banner, "none") == 0 ||
112 (datafellows & SSH_BUG_BANNER) != 0)
115 if ((banner = PRIVSEP(auth2_read_banner())) == NULL)
117 userauth_send_banner(banner);
125 userauth_none(Authctxt *authctxt)
131 if (check_nt_auth(1, authctxt->pw) == 0)
134 if (options.password_authentication)
135 return (PRIVSEP(auth_password(authctxt, "")));
139 Authmethod method_none = {