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package org.traccar.protocol;
import org.jboss.netty.bootstrap.ServerBootstrap;
import org.jboss.netty.buffer.ChannelBuffer;
import org.jboss.netty.buffer.ChannelBuffers;
import org.jboss.netty.channel.ChannelPipeline;
import org.traccar.BaseProtocol;
import org.traccar.TrackerServer;
import org.traccar.database.ActiveDevice;
import org.traccar.helper.Crc;
import org.traccar.http.commands.CommandType;
import org.traccar.http.commands.NoParameterCommand;
import org.traccar.protocol.commands.CommandTemplate;
import java.util.List;
import java.util.Map;
public class Gt06Protocol extends BaseProtocol {
public Gt06Protocol() {
super("gt06");
}
@Override
protected void loadCommandsTemplates(Map<CommandType, CommandTemplate> templates) {
templates.put(CommandType.STOP_ENGINE, new Gt06CommandTemplate("DYD#"));
templates.put(CommandType.RESUME_ENGINE, new Gt06CommandTemplate("HFYD#"));
}
@Override
public void addTrackerServersTo(List<TrackerServer> serverList) {
serverList.add(new TrackerServer(new ServerBootstrap(), this.getName()) {
@Override
protected void addSpecificHandlers(ChannelPipeline pipeline) {
pipeline.addLast("frameDecoder", new Gt06FrameDecoder());
pipeline.addLast("objectDecoder", new Gt06ProtocolDecoder(Gt06Protocol.this));
}
});
}
class Gt06CommandTemplate implements CommandTemplate<NoParameterCommand> {
private String commandContent;
public Gt06CommandTemplate(String commandContent) {
this.commandContent = commandContent;
}
@Override
public Object applyTo(ActiveDevice activeDevice, NoParameterCommand command) {
int serverFlagBit = 0x0;
int commandLength = serverFlagBit + commandContent.length();
int packetLength = 0x80 /*Protocol Number */ + commandContent.length() /* Information Content */ + 2 /*Information Serial Number */+ 2 /*Error Check */;
int informationSerialNumber = 1;
ChannelBuffer response = ChannelBuffers.directBuffer(10);
response.writeBytes(new byte[]{0x78, 0x78}); // Start Bit
response.writeByte(packetLength); // Packet Length
response.writeByte(0x80); // Protocol Number
// Information Content
response.writeByte(commandLength); // Length of command
response.writeByte(serverFlagBit); // Server Flag Bit
response.writeBytes(commandContent.getBytes()); // Command Content
response.writeBytes(new byte[]{0x00, 0x02}); // Language
response.writeShort(informationSerialNumber); // Information Serial Number
int crc = Crc.crc16Ccitt(response.toByteBuffer(2, response.writerIndex()));
response.writeShort(crc); // Error Check
response.writeBytes(new byte[] {0x0D, 0x0A}); // Stop Bit
return response;
}
}
}
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