path: root/source3/libmsrpc/libmsrpc_internal.c

/* 
 *  Unix SMB/CIFS implementation.
 *  MS-RPC client internal functions
 *  Copyright (C) Chris Nicholls              2005.
 *  
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *  
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *  
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */


#include "libmsrpc.h"
#include "libmsrpc_internal.h"

char *cac_unistr_to_str( TALLOC_CTX * mem_ctx, uint16 * src, int num_bytes );
char *talloc_unistr2_to_ascii( TALLOC_CTX * mem_ctx, UNISTR2 str );
char *cac_unistr_ascii( TALLOC_CTX * mem_ctx, UNISTR src );

/*used to get a struct rpc_pipe_client* to be passed into rpccli* calls*/
struct rpc_pipe_client *cac_GetPipe( CacServerHandle * hnd, int pi_idx )
{
	SMBCSRV *srv = NULL;
	struct rpc_pipe_client *pipe_hnd = NULL;

	if ( !hnd ) {
		return NULL;
	}

	if ( hnd->_internal.pipes[pi_idx] == False ) {
		hnd->status = NT_STATUS_INVALID_HANDLE;
		return NULL;
	}

	srv = cac_GetServer( hnd );
	if ( !srv ) {
		hnd->status = NT_STATUS_INVALID_CONNECTION;
		return NULL;
	}

	pipe_hnd = srv->cli->pipe_list;

	while ( pipe_hnd != NULL && pipe_hnd->pipe_idx != pi_idx ) {
		pipe_hnd = pipe_hnd->next;
	}

	return pipe_hnd;
}

/*takes a string like HKEY_LOCAL_MACHINE\HARDWARE\ACPI and returns the reg_type code and then a pointer to the start of the path (HARDWARE)*/
int cac_ParseRegPath( char *path, uint32 * reg_type, char **key_name )
{

	if ( !path )
		return CAC_FAILURE;

	if ( strncmp( path, "HKLM", 4 ) == 0 ) {
		*reg_type = HKEY_LOCAL_MACHINE;
		*key_name = ( path[4] == '\\' ) ? path + 5 : NULL;
	} else if ( strncmp( path, "HKEY_LOCAL_MACHINE", 18 ) == 0 ) {
		*reg_type = HKEY_LOCAL_MACHINE;
		*key_name = ( path[18] == '\\' ) ? path + 19 : NULL;
	} else if ( strncmp( path, "HKCR", 4 ) == 0 ) {
		*reg_type = HKEY_CLASSES_ROOT;
		*key_name = ( path[4] == '\\' ) ? path + 5 : NULL;
	} else if ( strncmp( path, "HKEY_CLASSES_ROOT", 17 ) == 0 ) {
		*reg_type = HKEY_CLASSES_ROOT;
		*key_name = ( path[17] == '\\' ) ? path + 18 : NULL;
	} else if ( strncmp( path, "HKU", 3 ) == 0 ) {
		*reg_type = HKEY_USERS;
		*key_name = ( path[3] == '\\' ) ? path + 4 : NULL;
	} else if ( strncmp( path, "HKEY_USERS", 10 ) == 0 ) {
		*reg_type = HKEY_USERS;
		*key_name = ( path[10] == '\\' ) ? path + 11 : NULL;
	} else if ( strncmp( path, "HKPD", 4 ) == 0 ) {
		*reg_type = HKEY_PERFORMANCE_DATA;
		*key_name = ( path[4] == '\\' ) ? path + 5 : NULL;
	} else if ( strncmp( path, "HKEY_PERFORMANCE_DATA", 21 ) == 0 ) {
		*reg_type = HKEY_PERFORMANCE_DATA;
		*key_name = ( path[21] == '\\' ) ? path + 22 : NULL;
	} else {
		return CAC_FAILURE;
	}

	return CAC_SUCCESS;
}



RPC_DATA_BLOB *cac_MakeRpcDataBlob( TALLOC_CTX * mem_ctx, uint32 data_type,
				    REG_VALUE_DATA data )
{
	RPC_DATA_BLOB *blob = NULL;
	int i;
	uint32 size = 0;
	uint8 *multi = NULL;
	uint32 multi_idx = 0;

	blob = talloc( mem_ctx, RPC_DATA_BLOB );

	if ( !blob ) {
		errno = ENOMEM;
		return NULL;
	}

	switch ( data_type ) {
	case REG_SZ:
		init_rpc_blob_str( blob, data.reg_sz,
				   strlen( data.reg_sz ) + 1 );
		break;

	case REG_EXPAND_SZ:
		init_rpc_blob_str( blob, data.reg_expand_sz,
				   strlen( data.reg_sz ) + 1 );
		break;

	case REG_BINARY:
		init_rpc_blob_bytes( blob, data.reg_binary.data,
				     data.reg_binary.data_length );
		break;

	case REG_DWORD:
		init_rpc_blob_uint32( blob, data.reg_dword );
		break;

	case REG_DWORD_BIG_ENDIAN:
		init_rpc_blob_uint32( blob, data.reg_dword_be );
		break;

	case REG_MULTI_SZ:
		/*need to find the size */
		for ( i = 0; i < data.reg_multi_sz.num_strings; i++ ) {
			size += strlen( data.reg_multi_sz.strings[i] ) + 1;
		}

	 /**need a whole bunch of unicode strings in a row (seperated by null characters), with an extra null-character on the end*/

		multi = TALLOC_ZERO_ARRAY( mem_ctx, uint8, ( size + 1 ) * 2 );	/*size +1 for the extra null character */
		if ( !multi ) {
			errno = ENOMEM;
			break;
		}

		/*do it using rpcstr_push() */
		multi_idx = 0;
		for ( i = 0; i < data.reg_multi_sz.num_strings; i++ ) {
			size_t len =
				strlen( data.reg_multi_sz.strings[i] ) + 1;

			rpcstr_push( ( multi + multi_idx ),
				     data.reg_multi_sz.strings[i], len * 2,
				     STR_TERMINATE );

			/* x2 becuase it is a uint8 buffer */
			multi_idx += len * 2;
		}

		/*now initialize the buffer as binary data */
		init_rpc_blob_bytes( blob, multi, ( size + 1 ) * 2 );

		break;

	default:
		TALLOC_FREE( blob );
		blob = NULL;
		return NULL;
	}

	if ( !( blob->buffer ) ) {
		TALLOC_FREE( blob );
		return NULL;
	}

	return blob;
}

/*turns a string in a uint16 array to a char array*/
char *cac_unistr_to_str( TALLOC_CTX * mem_ctx, uint16 * src, int num_bytes )
{
	char *buf;

	int i = 0;

	uint32 str_len = 0;

	/*don't allocate more space than we need */
	while ( ( str_len ) < num_bytes / 2 && src[str_len] != 0x0000 )
		str_len++;

	/*need room for a '\0' */
	str_len++;

	buf = talloc_array( mem_ctx, char, str_len );

	if ( !buf ) {
		return NULL;
	}

	for ( i = 0; i < num_bytes / 2; i++ ) {
		buf[i] = ( ( char * ) src )[2 * i];
	}

	buf[str_len - 1] = '\0';

	return buf;
}

REG_VALUE_DATA *cac_MakeRegValueData( TALLOC_CTX * mem_ctx, uint32 data_type,
				      REGVAL_BUFFER buf )
{
	REG_VALUE_DATA *data;

	uint32 i;

	/*all of the following used for MULTI_SZ data */
	uint32 size = 0;
	uint32 len = 0;
	uint32 multi_idx = 0;
	uint32 num_strings = 0;
	char **strings = NULL;

	data = talloc( mem_ctx, REG_VALUE_DATA );
	if ( !data ) {
		errno = ENOMEM;
		return NULL;
	}

	switch ( data_type ) {
	case REG_SZ:
		data->reg_sz =
			cac_unistr_to_str( mem_ctx, buf.buffer, buf.buf_len );
		if ( !data->reg_sz ) {
			TALLOC_FREE( data );
			errno = ENOMEM;
			data = NULL;
		}

		break;

	case REG_EXPAND_SZ:
		data->reg_expand_sz =
			cac_unistr_to_str( mem_ctx, buf.buffer, buf.buf_len );

		if ( !data->reg_expand_sz ) {
			TALLOC_FREE( data );
			errno = ENOMEM;
			data = NULL;
		}

		break;

	case REG_BINARY:
		size = buf.buf_len;

		data->reg_binary.data_length = size;

		data->reg_binary.data =
			( uint8 * ) talloc_memdup( mem_ctx, buf.buffer,
						   size );
		if ( !data->reg_binary.data ) {
			TALLOC_FREE( data );
			errno = ENOMEM;
			data = NULL;
		}
		break;

	case REG_DWORD:
		data->reg_dword = *( ( uint32 * ) buf.buffer );
		break;

	case REG_DWORD_BIG_ENDIAN:
		data->reg_dword_be = *( ( uint32 * ) buf.buffer );
		break;

	case REG_MULTI_SZ:
		size = buf.buf_len;

		/*find out how many strings there are. size is # of bytes and we want to work uint16 */
		for ( i = 0; i < ( size / 2 - 1 ); i++ ) {
			if ( buf.buffer[i] == 0x0000 )
				num_strings++;

			/*buffer is suppsed to be terminated with \0\0, but it might not be */
			if ( buf.buffer[i] == 0x0000
			     && buf.buffer[i + 1] == 0x0000 )
				break;
		}

		strings = talloc_array( mem_ctx, char *, num_strings );

		if ( !strings ) {
			errno = ENOMEM;
			TALLOC_FREE( data );
			break;
		}

		if ( num_strings == 0 )	/*then our work here is done */
			break;

		for ( i = 0; i < num_strings; i++ ) {
			/*find out how many characters are in this string */
			len = 0;
			/*make sure we don't go past the end of the buffer and keep looping until we have a uni \0 */
			while ( multi_idx + len < size / 2
				&& buf.buffer[multi_idx + len] != 0x0000 )
				len++;

			/*stay aware of the \0\0 */
			len++;

			strings[i] = TALLOC_ZERO_ARRAY( mem_ctx, char, len );

			/*pull out the unicode string */
			rpcstr_pull( strings[i], ( buf.buffer + multi_idx ),
				     len, -1, STR_TERMINATE );

			/*keep track of where we are in the bigger array */
			multi_idx += len;
		}

		data->reg_multi_sz.num_strings = num_strings;
		data->reg_multi_sz.strings = strings;

		break;

	default:
		TALLOC_FREE( data );
		data = NULL;
	}

	return data;
}

SAM_USERINFO_CTR *cac_MakeUserInfoCtr( TALLOC_CTX * mem_ctx,
				       CacUserInfo * info )
{
	SAM_USERINFO_CTR *ctr = NULL;

	/*the flags we are 'setting'- include/passdb.h */
	uint32 flags =
		ACCT_USERNAME | ACCT_FULL_NAME | ACCT_PRIMARY_GID |
		ACCT_DESCRIPTION | ACCT_COMMENT | ACCT_HOME_DIR |
		ACCT_HOME_DRIVE | ACCT_LOGON_SCRIPT | ACCT_PROFILE |
		ACCT_WORKSTATIONS | ACCT_FLAGS;

	NTTIME logon_time;
	NTTIME logoff_time;
	NTTIME kickoff_time;
	NTTIME pass_last_set_time;
	NTTIME pass_can_change_time;
	NTTIME pass_must_change_time;

	UNISTR2 user_name;
	UNISTR2 full_name;
	UNISTR2 home_dir;
	UNISTR2 dir_drive;
	UNISTR2 log_scr;
	UNISTR2 prof_path;
	UNISTR2 desc;
	UNISTR2 wkstas;
	UNISTR2 mung_dial;
	UNISTR2 unk;

	ctr = talloc( mem_ctx, SAM_USERINFO_CTR );
	if ( !ctr )
		return NULL;

	ZERO_STRUCTP( ctr->info.id23 );

	ctr->info.id21 = talloc( mem_ctx, SAM_USER_INFO_21 );
	if ( !ctr->info.id21 )
		return NULL;

	ctr->switch_value = 21;

	ZERO_STRUCTP( ctr->info.id21 );

	unix_to_nt_time( &logon_time, info->logon_time );
	unix_to_nt_time( &logoff_time, info->logoff_time );
	unix_to_nt_time( &kickoff_time, info->kickoff_time );
	unix_to_nt_time( &pass_last_set_time, info->pass_last_set_time );
	unix_to_nt_time( &pass_can_change_time, info->pass_can_change_time );
	unix_to_nt_time( &pass_must_change_time,
			 info->pass_must_change_time );

	/*initialize the strings */
	init_unistr2( &user_name, info->username, UNI_STR_TERMINATE );
	init_unistr2( &full_name, info->full_name, UNI_STR_TERMINATE );
	init_unistr2( &home_dir, info->home_dir, UNI_STR_TERMINATE );
	init_unistr2( &dir_drive, info->home_drive, UNI_STR_TERMINATE );
	init_unistr2( &log_scr, info->logon_script, UNI_STR_TERMINATE );
	init_unistr2( &prof_path, info->profile_path, UNI_STR_TERMINATE );
	init_unistr2( &desc, info->description, UNI_STR_TERMINATE );
	init_unistr2( &wkstas, info->workstations, UNI_STR_TERMINATE );
	init_unistr2( &unk, "\0", UNI_STR_TERMINATE );
	init_unistr2( &mung_dial, info->dial, UNI_STR_TERMINATE );

	/*manually set passmustchange */
	ctr->info.id21->passmustchange =
		( info->pass_must_change ) ? 0x01 : 0x00;

	init_sam_user_info21W( ctr->info.id21, &logon_time, &logoff_time, &kickoff_time, &pass_last_set_time, &pass_can_change_time, &pass_must_change_time, &user_name, &full_name, &home_dir, &dir_drive, &log_scr, &prof_path, &desc, &wkstas, &unk, &mung_dial, info->lm_password, info->nt_password, info->rid, info->group_rid, info->acb_mask, flags, 168,	/*logon divs */
			       info->logon_hours,
			       info->bad_passwd_count, info->logon_count );

	return ctr;

}

char *talloc_unistr2_to_ascii( TALLOC_CTX * mem_ctx, UNISTR2 str )
{
	char *buf = NULL;

	if ( !mem_ctx )
		return NULL;

	buf = talloc_array( mem_ctx, char, ( str.uni_str_len + 1 ) );
	if ( !buf )
		return NULL;

	unistr2_to_ascii( buf, &str, str.uni_str_len + 1 );

	return buf;
}

CacUserInfo *cac_MakeUserInfo( TALLOC_CTX * mem_ctx, SAM_USERINFO_CTR * ctr )
{
	CacUserInfo *info = NULL;
	SAM_USER_INFO_21 *id21 = NULL;

	if ( !ctr || ctr->switch_value != 21 )
		return NULL;

	info = talloc( mem_ctx, CacUserInfo );
	if ( !info )
		return NULL;

	id21 = ctr->info.id21;

	ZERO_STRUCTP( info );

	info->logon_time = nt_time_to_unix( id21->logon_time );
	info->logoff_time = nt_time_to_unix( id21->logoff_time );
	info->kickoff_time = nt_time_to_unix( id21->kickoff_time );
	info->pass_last_set_time =
		nt_time_to_unix( id21->pass_last_set_time );
	info->pass_can_change_time =
		nt_time_to_unix( id21->pass_can_change_time );
	info->pass_must_change_time =
		nt_time_to_unix( id21->pass_must_change_time );

	info->username =
		talloc_unistr2_to_ascii( mem_ctx, id21->uni_user_name );
	if ( !info->username )
		return NULL;

	info->full_name =
		talloc_unistr2_to_ascii( mem_ctx, id21->uni_full_name );
	if ( !info->full_name )
		return NULL;

	info->home_dir =
		talloc_unistr2_to_ascii( mem_ctx, id21->uni_home_dir );
	if ( !info->home_dir )
		return NULL;

	info->home_drive =
		talloc_unistr2_to_ascii( mem_ctx, id21->uni_dir_drive );
	if ( !info->home_drive )
		return NULL;

	info->logon_script =
		talloc_unistr2_to_ascii( mem_ctx, id21->uni_logon_script );
	if ( !info->logon_script )
		return NULL;

	info->profile_path =
		talloc_unistr2_to_ascii( mem_ctx, id21->uni_profile_path );
	if ( !info->profile_path )
		return NULL;

	info->description =
		talloc_unistr2_to_ascii( mem_ctx, id21->uni_acct_desc );
	if ( !info->description )
		return NULL;

	info->workstations =
		talloc_unistr2_to_ascii( mem_ctx, id21->uni_workstations );
	if ( !info->workstations )
		return NULL;

	info->dial =
		talloc_unistr2_to_ascii( mem_ctx, id21->uni_munged_dial );
	if ( !info->dial )
		return NULL;

	info->rid = id21->user_rid;
	info->group_rid = id21->group_rid;
	info->acb_mask = id21->acb_info;
	info->bad_passwd_count = id21->bad_password_count;
	info->logon_count = id21->logon_count;

	memcpy( info->nt_password, id21->nt_pwd, 8 );
	memcpy( info->lm_password, id21->lm_pwd, 8 );

	info->logon_hours =
		( LOGON_HRS * ) talloc_memdup( mem_ctx, &( id21->logon_hrs ),
					       sizeof( LOGON_HRS ) );
	if ( !info->logon_hours )
		return NULL;

	info->pass_must_change = ( id21->passmustchange ) ? True : False;

	return info;
}

CacGroupInfo *cac_MakeGroupInfo( TALLOC_CTX * mem_ctx, GROUP_INFO_CTR * ctr )
{
	CacGroupInfo *info = NULL;

	if ( !mem_ctx || !ctr || ctr->switch_value1 != 1 )
		return NULL;

	info = talloc( mem_ctx, CacGroupInfo );
	if ( !info )
		return NULL;

	info->name =
		talloc_unistr2_to_ascii( mem_ctx,
					 ctr->group.info1.uni_acct_name );
	if ( !info->name )
		return NULL;

	info->description =
		talloc_unistr2_to_ascii( mem_ctx,
					 ctr->group.info1.uni_acct_desc );
	if ( !info->description )
		return NULL;

	info->num_members = ctr->group.info1.num_members;

	return info;
}

GROUP_INFO_CTR *cac_MakeGroupInfoCtr( TALLOC_CTX * mem_ctx,
				      CacGroupInfo * info )
{
	GROUP_INFO_CTR *ctr = NULL;

	if ( !mem_ctx || !info )
		return NULL;

	ctr = talloc( mem_ctx, GROUP_INFO_CTR );
	if ( !ctr )
		return NULL;

	ctr->switch_value1 = 1;

	init_samr_group_info1( &( ctr->group.info1 ), info->name,
			       info->description, info->num_members );

	return ctr;
}

CacAliasInfo *cac_MakeAliasInfo( TALLOC_CTX * mem_ctx, ALIAS_INFO_CTR ctr )
{
	CacGroupInfo *info = NULL;

	if ( !mem_ctx || ctr.level != 1 )
		return NULL;

	info = talloc( mem_ctx, CacAliasInfo );
	if ( !info )
		return NULL;

	info->name =
		talloc_unistr2_to_ascii( mem_ctx,
					 *( ctr.alias.info1.name.string ) );
	if ( !info->name )
		return NULL;

	info->description =
		talloc_unistr2_to_ascii( mem_ctx,
					 *( ctr.alias.info1.description.
					    string ) );
	if ( !info->name )
		return NULL;

	info->num_members = ctr.alias.info1.num_member;

	return info;
}

ALIAS_INFO_CTR *cac_MakeAliasInfoCtr( TALLOC_CTX * mem_ctx,
				      CacAliasInfo * info )
{
	ALIAS_INFO_CTR *ctr = NULL;

	if ( !mem_ctx || !info )
		return NULL;

	ctr = talloc( mem_ctx, ALIAS_INFO_CTR );
	if ( !ctr )
		return NULL;

	ctr->level = 1;

	init_samr_alias_info1( &( ctr->alias.info1 ), info->name,
			       info->num_members, info->description );

	return ctr;
}

CacDomainInfo *cac_MakeDomainInfo( TALLOC_CTX * mem_ctx,
				   SAM_UNK_INFO_1 * info1,
				   SAM_UNK_INFO_2 * info2,
				   SAM_UNK_INFO_12 * info12 )
{
	CacDomainInfo *info = NULL;

	if ( !mem_ctx || !info1 || !info2 || !info12 )
		return NULL;

	info = talloc( mem_ctx, CacDomainInfo );
	if ( !info )
		return NULL;

	info->min_pass_length = info1->min_length_password;
	info->pass_history = info1->password_history;

	cac_InitCacTime( &( info->expire ), info1->expire );
	cac_InitCacTime( &( info->min_pass_age ), info1->min_passwordage );

	info->server_role = info2->server_role;
	info->num_users = info2->num_domain_usrs;
	info->num_domain_groups = info2->num_domain_grps;
	info->num_local_groups = info2->num_local_grps;

	/*if these have been ZERO'd out we need to know. uni_str_len will be 0 */
	if ( info2->uni_comment.uni_str_len == 0 ) {
		info->comment = talloc_strdup( mem_ctx, "\0" );
	} else {
		info->comment =
			talloc_unistr2_to_ascii( mem_ctx,
						 info2->uni_comment );
	}

	if ( info2->uni_domain.uni_str_len == 0 ) {
		info->domain_name = talloc_strdup( mem_ctx, "\0" );
	} else {
		info->domain_name =
			talloc_unistr2_to_ascii( mem_ctx, info2->uni_domain );
	}

	if ( info2->uni_server.uni_str_len == 0 ) {
		info->server_name = talloc_strdup( mem_ctx, "\0" );
	} else {
		info->server_name =
			talloc_unistr2_to_ascii( mem_ctx, info2->uni_server );
	}


	cac_InitCacTime( &( info->lockout_duration ), info12->duration );
	cac_InitCacTime( &( info->lockout_reset ), info12->reset_count );
	info->num_bad_attempts = info12->bad_attempt_lockout;

	return info;
}

char *cac_unistr_ascii( TALLOC_CTX * mem_ctx, UNISTR src )
{
	char *buf;
	uint32 len;

	if ( !mem_ctx || !src.buffer )
		return NULL;

	len = unistrlen( src.buffer ) + 1;

	buf = TALLOC_ZERO_ARRAY( mem_ctx, char, len );
	if ( !buf )
		return NULL;

	rpcstr_pull( buf, src.buffer, len, -1, STR_TERMINATE );

	return buf;
}

CacService *cac_MakeServiceArray( TALLOC_CTX * mem_ctx,
				  ENUM_SERVICES_STATUS * svc,
				  uint32 num_services )
{
	int i;
	CacService *services = NULL;

	if ( !mem_ctx || !svc )
		return NULL;

	services = TALLOC_ZERO_ARRAY( mem_ctx, CacService, num_services );
	if ( !services )
		return NULL;

	for ( i = 0; i < num_services; i++ ) {
		services[i].service_name =
			cac_unistr_ascii( mem_ctx, svc[i].servicename );
		services[i].display_name =
			cac_unistr_ascii( mem_ctx, svc[i].displayname );

		if ( !services[i].service_name || !services[i].display_name )
			return NULL;

		services[i].status = svc[i].status;
	}

	return services;
}

int cac_InitCacServiceConfig( TALLOC_CTX * mem_ctx, SERVICE_CONFIG * src,
			      CacServiceConfig * dest )
{
	if ( !src || !dest )
		return CAC_FAILURE;

	dest->exe_path =
		talloc_unistr2_to_ascii( mem_ctx, *src->executablepath );
	if ( !dest->exe_path )
		return CAC_FAILURE;

	dest->load_order_group =
		talloc_unistr2_to_ascii( mem_ctx, *src->loadordergroup );
	if ( !dest->load_order_group )
		return CAC_FAILURE;

	dest->dependencies =
		talloc_unistr2_to_ascii( mem_ctx, *src->dependencies );
	if ( !dest->dependencies )
		return CAC_FAILURE;

	dest->start_name =
		talloc_unistr2_to_ascii( mem_ctx, *src->startname );
	if ( !dest->start_name )
		return CAC_FAILURE;

	dest->display_name =
		talloc_unistr2_to_ascii( mem_ctx, *src->displayname );
	if ( !dest->display_name )
		return CAC_FAILURE;

	dest->type = src->service_type;
	dest->start_type = src->start_type;
	dest->error_control = src->error_control;
	dest->tag_id = src->tag_id;

	return CAC_SUCCESS;
}