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/*
* Copyright 2018 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 io.netty.channel.Channel;
import org.traccar.BaseProtocolDecoder;
import org.traccar.DeviceSession;
import org.traccar.NetworkMessage;
import org.traccar.Protocol;
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.text.SimpleDateFormat;
import java.util.Date;
import java.util.regex.Pattern;
public class Pt60ProtocolDecoder extends BaseProtocolDecoder {
public Pt60ProtocolDecoder(Protocol protocol) {
super(protocol);
}
public static final int MSG_G_TRACK = 6;
public static final int MSG_G_STEP_COUNT = 13;
public static final int MSG_G_HEART_RATE = 14;
public static final int MSG_B_POSITION = 1;
private static final Pattern PATTERN = new PatternBuilder()
.expression("@(.)#@[,|]") // header
.number("V?dd[,|]") // protocol version
.number("(d+)[,|]") // type
.number("(d+)[,|]") // imei
.number("d+[,|]") // imsi
.groupBegin()
.expression("[^,|]+[,|]").optional() // firmware version
.number("[01][,|]") // state
.number("d+[,|]") // battery
.groupEnd("?")
.number("(dddd)(dd)(dd)") // date (yyyymmdd)
.number("(dd)(dd)(dd)[,|]") // time (hhmmss)
.expression("(.*)") // data
.expression("[,|]")
.compile();
private void sendResponse(Channel channel, SocketAddress remoteAddress, String format, int type, String imei) {
if (channel != null) {
String message;
String time = new SimpleDateFormat("yyyyMMddHHmmss").format(new Date());
if (format.equals("G")) {
message = String.format("@G#@,V01,38,%s,@R#@", time);
} else {
message = String.format("@B#@|01|%03d|%s|0|%s|@E#@", type + 1, imei, time);
}
channel.writeAndFlush(new NetworkMessage(message, remoteAddress));
}
}
@Override
protected Object decode(
Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
Parser parser = new Parser(PATTERN, (String) msg);
if (!parser.matches()) {
return null;
}
String format = parser.next();
int type = parser.nextInt();
String imei = parser.next();
DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, imei);
if (deviceSession == null) {
return null;
}
sendResponse(channel, remoteAddress, format, type, imei);
if (format.equals("G")) {
if (type != MSG_G_TRACK && type != MSG_G_STEP_COUNT && type != MSG_G_HEART_RATE) {
return null;
}
Position position = new Position(getProtocolName());
position.setDeviceId(deviceSession.getDeviceId());
position.setDeviceTime(parser.nextDateTime());
String[] values = parser.next().split(",");
if (type == MSG_G_TRACK) {
position.setValid(true);
position.setFixTime(position.getDeviceTime());
String[] coordinates = values[0].split(";");
position.setLatitude(Double.parseDouble(coordinates[0]));
position.setLongitude(Double.parseDouble(coordinates[1]));
} else {
getLastLocation(position, position.getDeviceTime());
switch (type) {
case MSG_G_STEP_COUNT:
position.set(Position.KEY_STEPS, Integer.parseInt(values[0]));
break;
case MSG_G_HEART_RATE:
position.set(Position.KEY_HEART_RATE, Integer.parseInt(values[0]));
position.set(Position.KEY_BATTERY, Integer.parseInt(values[1]));
break;
default:
break;
}
}
return position;
} else {
if (type != MSG_B_POSITION) {
return null;
}
Position position = new Position(getProtocolName());
position.setDeviceId(deviceSession.getDeviceId());
position.setDeviceTime(parser.nextDateTime());
String[] values = parser.next().split("\\|");
if (Integer.parseInt(values[values.length - 1]) == 2) {
getLastLocation(position, position.getDeviceTime());
Network network = new Network();
for (int i = 0; i < values.length - 1; i++) {
String[] cellValues = values[i].split(",");
CellTower tower = new CellTower();
tower.setCellId(Long.parseLong(cellValues[0]));
tower.setLocationAreaCode(Integer.parseInt(cellValues[1]));
tower.setMobileNetworkCode(Integer.parseInt(cellValues[2]));
tower.setMobileCountryCode(Integer.parseInt(cellValues[3]));
tower.setSignalStrength(Integer.parseInt(cellValues[4]));
network.addCellTower(tower);
}
position.setNetwork(network);
} else {
position.setValid(true);
position.setFixTime(position.getDeviceTime());
position.setLatitude(Double.parseDouble(values[0]));
position.setLongitude(Double.parseDouble(values[1]));
}
return position;
}
}
}
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