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/* $OpenBSD: auth2-passwd.c,v 1.14 2017/05/30 14:29:59 markus 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 <sys/types.h>
#include <string.h>
#include <stdarg.h>
#include "packet.h"
#include "ssherr.h"
#include "log.h"
#include "sshkey.h"
#include "hostfile.h"
#include "auth.h"
#include "buffer.h"
#ifdef GSSAPI
#include "ssh-gss.h"
#endif
#include "monitor_wrap.h"
#include "misc.h"
#include "servconf.h"
/* import */
extern ServerOptions options;
static int
userauth_passwd(struct ssh *ssh)
{
char *password;
int authenticated = 0, r;
u_char change;
size_t len;
if ((r = sshpkt_get_u8(ssh, &change)) != 0 ||
(r = sshpkt_get_cstring(ssh, &password, &len)) != 0 ||
(change && (r = sshpkt_get_cstring(ssh, NULL, NULL)) != 0) ||
(r = sshpkt_get_end(ssh)) != 0)
fatal("%s: %s", __func__, ssh_err(r));
if (change)
logit("password change not supported");
else if (PRIVSEP(auth_password(ssh->authctxt, password)) == 1)
authenticated = 1;
explicit_bzero(password, len);
free(password);
return authenticated;
}
Authmethod method_passwd = {
"password",
userauth_passwd,
&options.password_authentication
};
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