/*
 * http_activesync.c
 *
 * Copyright (C) 2009-2011 by ipoque GmbH
 * Copyright (C) 2011-15 - ntop.org
 *
 * This file is part of nDPI, an open source deep packet inspection
 * library based on the OpenDPI and PACE technology by ipoque GmbH
 *
 * nDPI is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * nDPI 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with nDPI.  If not, see <http://www.gnu.org/licenses/>.
 *
 */



#include "ndpi_protocols.h"
#ifdef NDPI_PROTOCOL_HTTP_APPLICATION_ACTIVESYNC
static void ndpi_int_activesync_add_connection(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow)
{
	ndpi_int_add_connection(ndpi_struct, flow, NDPI_PROTOCOL_HTTP_APPLICATION_ACTIVESYNC, NDPI_CORRELATED_PROTOCOL);
}

void ndpi_search_activesync(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow)
{
	struct ndpi_packet_struct *packet = &flow->packet;
	
	if (packet->tcp != NULL) {

		if (packet->payload_packet_len > 150
			&& ((memcmp(packet->payload, "OPTIONS /Microsoft-Server-ActiveSync?", 37) == 0)
				|| (memcmp(packet->payload, "POST /Microsoft-Server-ActiveSync?", 34) == 0))) {
			ndpi_int_activesync_add_connection(ndpi_struct, flow);
			NDPI_LOG(NDPI_PROTOCOL_HTTP_APPLICATION_ACTIVESYNC, ndpi_struct, NDPI_LOG_DEBUG,
					" flow marked as ActiveSync \n");
			return;
		}
	}

	NDPI_LOG(NDPI_PROTOCOL_HTTP_APPLICATION_ACTIVESYNC, ndpi_struct, NDPI_LOG_DEBUG, "exclude activesync\n");
	NDPI_ADD_PROTOCOL_TO_BITMASK(flow->excluded_protocol_bitmask, NDPI_PROTOCOL_HTTP_APPLICATION_ACTIVESYNC);

}
#endif