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/*
* Copyright 2016 Anton Tananaev (anton.tananaev@gmail.com)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.traccar.protocol;
import org.jboss.netty.buffer.ChannelBuffer;
import org.jboss.netty.buffer.ChannelBuffers;
import org.jboss.netty.channel.Channel;
import org.traccar.BaseProtocolDecoder;
import org.traccar.DeviceSession;
import org.traccar.helper.DateBuilder;
import org.traccar.model.Position;
import java.net.SocketAddress;
public class SmokeyProtocolDecoder extends BaseProtocolDecoder {
public SmokeyProtocolDecoder(SmokeyProtocol protocol) {
super(protocol);
}
@Override
protected Object decode(
Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
ChannelBuffer buf = (ChannelBuffer) msg;
buf.skipBytes(2); // header
buf.readUnsignedByte(); // protocol version
String id = ChannelBuffers.hexDump(buf.readBytes(8));
DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, id);
if (deviceSession == null) {
return null;
}
int type = buf.readUnsignedByte();
if (type == 0) {
if (channel != null) {
// TODO send ack
}
Position position = new Position();
position.setProtocol(getProtocolName());
position.setDeviceId(deviceSession.getDeviceId());
position.set(Position.KEY_STATUS, buf.readUnsignedByte());
DateBuilder dateBuilder = new DateBuilder()
.setDate(2000, 1, 1).addSeconds(buf.readUnsignedInt());
getLastLocation(position, dateBuilder.getDate());
position.set(Position.KEY_INDEX, buf.readUnsignedByte());
buf.readUnsignedShort(); // task / parameter number
buf.readUnsignedShort(); // length
// data
return position;
}
return null;
}
}
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