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- /* $OpenBSD: auth2-none.c,v 1.25 2023/03/05 05:34:09 dtucker Exp $ */
- /*
- * Copyright (c) 2000 Markus Friedl. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
- #include "includes.h"
-
- #include <sys/types.h>
- #include <sys/stat.h>
- #include <sys/uio.h>
-
- #include <fcntl.h>
- #include <string.h>
- #include <unistd.h>
- #include <stdarg.h>
- #include <stdio.h>
-
- #include "atomicio.h"
- #include "xmalloc.h"
- #include "sshkey.h"
- #include "hostfile.h"
- #include "auth.h"
- #include "packet.h"
- #include "log.h"
- #include "misc.h"
- #include "servconf.h"
- #include "ssh2.h"
- #include "ssherr.h"
- #ifdef GSSAPI
- #include "ssh-gss.h"
- #endif
- #include "monitor_wrap.h"
-
- /* import */
- extern ServerOptions options;
-
- /* "none" is allowed only one time */
- static int none_enabled = 1;
-
- static int
- userauth_none(struct ssh *ssh, const char *method)
- {
- int r;
-
- none_enabled = 0;
- if ((r = sshpkt_get_end(ssh)) != 0)
- fatal_fr(r, "parse packet");
- if (options.permit_empty_passwd && options.password_authentication)
- return (PRIVSEP(auth_password(ssh, "")));
- return (0);
- }
-
- Authmethod method_none = {
- "none",
- NULL,
- userauth_none,
- &none_enabled
- };
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