[openssh.git] / auth2-passwd.c

/* $OpenBSD: auth2-passwd.c,v 1.9 2006/08/03 03:34:41 deraadt 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 <string.h>
#include <stdarg.h>

#include "xmalloc.h"
#include "packet.h"
#include "log.h"
#include "key.h"
#include "hostfile.h"
#include "auth.h"
#include "buffer.h"
#ifdef GSSAPI
#include "ssh-gss.h"
#endif
#include "monitor_wrap.h"
#include "servconf.h"

/* import */
extern ServerOptions options;

static int
userauth_passwd(Authctxt *authctxt)
{
	char *password, *newpass;
	int authenticated = 0;
	int change;
	u_int len, newlen;

	change = packet_get_char();
	password = packet_get_string(&len);
	if (change) {
		/* discard new password from packet */
		newpass = packet_get_string(&newlen);
		memset(newpass, 0, newlen);
		xfree(newpass);
	}
	packet_check_eom();

	if (change)
		logit("password change not supported");
	else if (PRIVSEP(auth_password(authctxt, password)) == 1)
		authenticated = 1;
	memset(password, 0, len);
	xfree(password);
	return authenticated;
}

Authmethod method_passwd = {
	"password",
	userauth_passwd,
	&options.password_authentication
};
Commit	Line	Data
31652869	1	/* $OpenBSD: auth2-passwd.c,v 1.9 2006/08/03 03:34:41 deraadt Exp $ */
013eab17	2	/*
	3	* Copyright (c) 2000 Markus Friedl. All rights reserved.
	4	*
	5	* Redistribution and use in source and binary forms, with or without
	6	* modification, are permitted provided that the following conditions
	7	* are met:
	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.
	13	*
	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.
	24	*/
	25
	26	#include "includes.h"
013eab17	27
31652869	28	#include <sys/types.h>
31652869	29
00146caa	30	#include <string.h>
31652869	31	#include <stdarg.h>
00146caa	32
013eab17	33	#include "xmalloc.h"
	34	#include "packet.h"
	35	#include "log.h"
31652869	36	#include "key.h"
31652869	37	#include "hostfile.h"
013eab17	38	#include "auth.h"
31652869	39	#include "buffer.h"
	40	#ifdef GSSAPI
	41	#include "ssh-gss.h"
	42	#endif
013eab17	43	#include "monitor_wrap.h"
	44	#include "servconf.h"
	45
	46	/* import */
	47	extern ServerOptions options;
	48
	49	static int
	50	userauth_passwd(Authctxt *authctxt)
	51	{
b0ca6225	52	char password, newpass;
013eab17	53	int authenticated = 0;
013eab17	54	int change;
b0ca6225	55	u_int len, newlen;
b0ca6225	56
013eab17	57	change = packet_get_char();
013eab17	58	password = packet_get_string(&len);
b0ca6225	59	if (change) {
	60	/* discard new password from packet */
	61	newpass = packet_get_string(&newlen);
	62	memset(newpass, 0, newlen);
	63	xfree(newpass);
	64	}
013eab17	65	packet_check_eom();
b0ca6225	66
	67	if (change)
	68	logit("password change not supported");
73b1ee82	69	else if (PRIVSEP(auth_password(authctxt, password)) == 1)
73b1ee82	70	authenticated = 1;
013eab17	71	memset(password, 0, len);
	72	xfree(password);
	73	return authenticated;
	74	}
	75
	76	Authmethod method_passwd = {
	77	"password",
	78	userauth_passwd,
	79	&options.password_authentication
	80	};