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/*
* Copyright 2013 - 2017 Anton Tananaev (anton@traccar.org)
*
* 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.channel.Channel;
import org.traccar.BaseProtocolDecoder;
import org.traccar.DeviceSession;
import org.traccar.helper.Checksum;
import org.traccar.helper.DateBuilder;
import org.traccar.helper.Parser;
import org.traccar.helper.PatternBuilder;
import org.traccar.model.CellTower;
import org.traccar.model.Network;
import org.traccar.model.Position;
import java.net.SocketAddress;
import java.util.regex.Pattern;
public class LaipacProtocolDecoder extends BaseProtocolDecoder {
public LaipacProtocolDecoder(LaipacProtocol protocol) {
super(protocol);
}
private static final Pattern PATTERN = new PatternBuilder()
.text("$AVRMC,")
.expression("([^,]+),") // identifier
.number("(dd)(dd)(dd),") // time (hhmmss)
.expression("([AVRPavrp]),") // validity
.number("(dd)(dd.d+),") // latitude
.expression("([NS]),")
.number("(ddd)(dd.d+),") // longitude
.number("([EW]),")
.number("(d+.d+),") // speed
.number("(d+.d+),") // course
.number("(dd)(dd)(dd),") // date (ddmmyy)
.expression("([abZXTSMHFE86430]),") // event code
.number("(d+)").expression("(\\.?)").number("(d*),") // battery voltage
.number("(d+),") // current mileage
.number("(d),") // GPS on/off (1 = on, 0 = off)
.number("(d+),") // Analog port 1
.number("(d+)") // Analog port 2
.expression(",([0-9a-fA-F]{4})") // Cell 1 - Cell Net Code
.expression("([0-9a-fA-F]{4}),") // Cell 1 - Cell ID Code
.number("(d{3})") // Cell 2 - Country Code
.number("(d{3})") // Cell 2 - Operator Code
.optional(4)
.text("*")
.number("(xx)") // checksum
.compile();
@Override
protected Object decode(
Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
String sentence = (String) msg;
if (sentence.startsWith("$ECHK") && channel != null) {
channel.write(sentence + "\r\n"); // heartbeat
return null;
}
Parser parser = new Parser(PATTERN, sentence);
if (!parser.matches()) {
return null;
}
DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, parser.next());
if (deviceSession == null) {
return null;
}
Position position = new Position(getProtocolName());
position.setDeviceId(deviceSession.getDeviceId());
DateBuilder dateBuilder = new DateBuilder()
.setTime(parser.nextInt(0), parser.nextInt(0), parser.nextInt(0));
String status = parser.next();
position.setValid(status.toUpperCase().equals("A"));
position.set(Position.KEY_STATUS, status);
position.setLatitude(parser.nextCoordinate());
position.setLongitude(parser.nextCoordinate());
position.setSpeed(parser.nextDouble(0));
position.setCourse(parser.nextDouble(0));
dateBuilder.setDateReverse(parser.nextInt(0), parser.nextInt(0), parser.nextInt(0));
position.setTime(dateBuilder.getDate());
String eventCode = parser.next();
position.set(Position.KEY_ALARM, decodeAlarm(eventCode));
position.set(Position.KEY_EVENT, eventCode);
double batteryVoltage = parser.nextDouble();
if (parser.next().isEmpty()) {
parser.next();
batteryVoltage *= 0.001;
} else {
batteryVoltage += parser.nextDouble() * 0.001;
}
position.set(Position.KEY_BATTERY, batteryVoltage);
position.set(Position.KEY_ODOMETER, parser.nextDouble());
position.set(Position.KEY_GPS, parser.nextInt());
position.set(Position.PREFIX_ADC + 1, parser.nextDouble() * 0.001);
position.set(Position.PREFIX_ADC + 2, parser.nextDouble() * 0.001);
String lac = parser.next();
String cid = parser.next();
String mcc = parser.next();
String mnc = parser.next();
if (lac != null
&& cid != null
&& mcc != null
&& mnc != null) {
position.setNetwork(new Network(CellTower.from(Integer.parseInt(mcc), Integer.parseInt(mnc),
Integer.parseInt(lac, 16), Long.parseLong(cid, 16))));
}
String checksum = parser.next();
if (channel != null) {
if (eventCode.equals("3")) {
channel.write("$AVCFG,00000000,d*31\r\n");
} else if (eventCode.equals("X") || eventCode.equals("4")) {
channel.write("$AVCFG,00000000,x*2D\r\n");
} else if (eventCode.equals("Z")) {
channel.write("$AVCFG,00000000,z*2F\r\n");
} else if (Character.isLowerCase(status.charAt(0))) {
String response = "$EAVACK," + eventCode + "," + checksum;
response += Checksum.nmea(response);
response += "\r\n";
channel.write(response);
}
}
return position;
}
private String decodeAlarm(String event) {
switch (event)
{
case "Z":
return Position.ALARM_LOW_BATTERY;
case "X":
return Position.ALARM_GEOFENCE_ENTER;
case "T":
return Position.ALARM_TAMPERING;
case "H":
return Position.ALARM_POWER_OFF;
case "8":
return Position.ALARM_SHOCK;
case "7":
case "4":
return Position.ALARM_GEOFENCE_EXIT;
case "6":
return Position.ALARM_OVERSPEED;
case "3":
return Position.ALARM_SOS;
default:
return null;
}
}
}
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