/*

 * CDDL HEADER START

 *

 * The contents of this file are subject to the terms of the

 * Common Development and Distribution License (the "License").

 * You may not use this file except in compliance with the License.

 *

 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE

 * or http://www.opensolaris.org/os/licensing.

 * See the License for the specific language governing permissions

 * and limitations under the License.

 *

 * When distributing Covered Code, include this CDDL HEADER in each

 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.

 * If applicable, add the following below this CDDL HEADER, with the

 * fields enclosed by brackets "[]" replaced with your own identifying

 * information: Portions Copyright [yyyy] [name of copyright owner]

 *

 * CDDL HEADER END

 */

/*

 * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.

 * Use is subject to license terms.

 */

/*

 * NT Token library (kernel/user)

 */

#ifdef _KERNEL

#include <sys/types.h>

#include <sys/cmn_err.h>

#include <sys/kmem.h>

#else /* _KERNEL */

#include <stdlib.h>

#include <strings.h>

#include <syslog.h>

#endif /* _KERNEL */

#include <smbsrv/string.h>

#include <smbsrv/smb_token.h>

#include <smbsrv/smb_xdr.h>

/*

 * smb_token_query_privilege

 *

 * Find out if the specified privilege is enable in the given

 * access token.

 */

int

smb_token_query_privilege(smb_token_t *token, int priv_id)

{

	smb_privset_t *privset;

	int i;

	if ((token == NULL) || (token->tkn_privileges == NULL))

		return (0);

	privset = token->tkn_privileges;

	for (i = 0; privset->priv_cnt; i++) {

		if (privset->priv[i].luid.lo_part == priv_id) {

			if (privset->priv[i].attrs == SE_PRIVILEGE_ENABLED)

				return (1);

			else

				return (0);

		}

	}

	return (0);

}

#ifndef _KERNEL

/*

 * smb_token_mkselfrel

 *

 * encode: structure -> flat buffer (buffer size)

 * Pre-condition: obj is non-null.

 */

uint8_t *

smb_token_mkselfrel(smb_token_t *obj, uint32_t *len)

{

	uint8_t *buf;

	XDR xdrs;

	if (!obj) {

		syslog(LOG_ERR, "smb_token_mkselfrel: invalid parameter");

		return (NULL);

	}

	*len = xdr_sizeof(xdr_smb_token_t, obj);

	buf = (uint8_t *)malloc(*len);

	if (!buf) {

		syslog(LOG_ERR, "smb_token_mkselfrel: resource shortage");

		return (NULL);

	}

	xdrmem_create(&xdrs, (const caddr_t)buf, *len, XDR_ENCODE);

	if (!xdr_smb_token_t(&xdrs, obj)) {

		syslog(LOG_ERR, "smb_token_mkselfrel: XDR encode error");

		*len = 0;

		free(buf);

		buf = NULL;

	}

	xdr_destroy(&xdrs);

	return (buf);

}

/*

 * netr_client_mkabsolute

 *

 * decode: flat buffer -> structure

 */

netr_client_t *

netr_client_mkabsolute(uint8_t *buf, uint32_t len)

{

	netr_client_t *obj;

	XDR xdrs;

	xdrmem_create(&xdrs, (const caddr_t)buf, len, XDR_DECODE);

	obj = (netr_client_t *)malloc(sizeof (netr_client_t));

	if (!obj) {

		syslog(LOG_ERR, "netr_client_mkabsolute: resource shortage");

		xdr_destroy(&xdrs);

		return (NULL);

	}

	bzero(obj, sizeof (netr_client_t));

	if (!xdr_netr_client_t(&xdrs, obj)) {

		syslog(LOG_ERR, "netr_client_mkabsolute: XDR decode error");

		free(obj);

		obj = NULL;

	}

	xdr_destroy(&xdrs);

	return (obj);

}

void

netr_client_xfree(netr_client_t *clnt)

{

	xdr_free(xdr_netr_client_t, (char *)clnt);

	free(clnt);

}

#else /* _KERNEL */

/*

 * smb_token_mkabsolute

 *

 * decode: flat buffer -> structure

 */

smb_token_t *

smb_token_mkabsolute(uint8_t *buf, uint32_t len)

{

	smb_token_t *obj;

	XDR xdrs;

	xdrmem_create(&xdrs, (const caddr_t)buf, len, XDR_DECODE);

	obj = kmem_zalloc(sizeof (smb_token_t), KM_SLEEP);

	if (!xdr_smb_token_t(&xdrs, obj)) {

		cmn_err(CE_NOTE, "smb_token_mkabsolute: XDR decode error");

		kmem_free(obj, sizeof (smb_token_t));

		obj = NULL;

	}

	xdr_destroy(&xdrs);

	return (obj);

}

/*

 * netr_client_mkselfrel

 *

 * encode: structure -> flat buffer (buffer size)

 * Pre-condition: obj is non-null.

 */

uint8_t *

netr_client_mkselfrel(netr_client_t *obj, uint32_t *len)

{

	uint8_t *buf;

	XDR xdrs;

	*len = xdr_sizeof(xdr_netr_client_t, obj);

	buf = kmem_alloc(*len, KM_SLEEP);

	xdrmem_create(&xdrs, (const caddr_t)buf, *len, XDR_ENCODE);

	if (!xdr_netr_client_t(&xdrs, obj)) {

		cmn_err(CE_NOTE, "netr_client_mkselfrel: XDR encode error");

		kmem_free(buf, *len);

		*len = 0;

		buf = NULL;

	}

	xdr_destroy(&xdrs);

	return (buf);

}

void

smb_token_free(smb_token_t *token)

{

	if (!token)

		return;

	/*

	 * deallocate any pointer field of an access token object

	 * using xdr_free since they are created by the XDR decode

	 * operation.

	 */

	xdr_free(xdr_smb_token_t, (char *)token);

	kmem_free(token, sizeof (smb_token_t));

}

#endif /* _KERNEL */