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/*
* Copyright 2021 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 io.netty.handler.codec.http.FullHttpRequest;
import io.netty.handler.codec.http.HttpResponseStatus;
import org.traccar.BaseHttpProtocolDecoder;
import org.traccar.session.DeviceSession;
import org.traccar.Protocol;
import org.traccar.helper.DateUtil;
import org.traccar.model.Position;
import jakarta.json.Json;
import jakarta.json.JsonObject;
import java.io.StringReader;
import java.net.SocketAddress;
import java.nio.charset.StandardCharsets;
public class LacakProtocolDecoder extends BaseHttpProtocolDecoder {
public LacakProtocolDecoder(Protocol protocol) {
super(protocol);
}
@Override
protected Object decode(
Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
FullHttpRequest request = (FullHttpRequest) msg;
JsonObject root = Json.createReader(
new StringReader(request.content().toString(StandardCharsets.US_ASCII))).readObject();
DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, root.getString("device_id"));
if (deviceSession == null) {
sendResponse(channel, HttpResponseStatus.BAD_REQUEST);
return null;
}
Position position = new Position(getProtocolName());
position.setDeviceId(deviceSession.getDeviceId());
JsonObject location = root.getJsonObject("location");
position.setTime(DateUtil.parseDate(location.getString("timestamp")));
if (location.containsKey("coords")) {
JsonObject coordinates = location.getJsonObject("coords");
position.setLatitude(coordinates.getJsonNumber("latitude").doubleValue());
position.setLongitude(coordinates.getJsonNumber("longitude").doubleValue());
position.setAccuracy(coordinates.getJsonNumber("accuracy").doubleValue());
position.setSpeed(coordinates.getJsonNumber("speed").doubleValue());
position.setCourse(coordinates.getJsonNumber("heading").doubleValue());
position.setAltitude(coordinates.getJsonNumber("altitude").doubleValue());
}
if (location.containsKey("event")) {
position.set(Position.KEY_EVENT, location.getString("event"));
}
if (location.containsKey("is_moving")) {
position.set(Position.KEY_MOTION, location.getBoolean("is_moving"));
}
if (location.containsKey("odometer")) {
position.set(Position.KEY_ODOMETER, location.getInt("odometer"));
}
if (location.containsKey("mock")) {
position.set("mock", location.getBoolean("mock"));
}
if (location.containsKey("activity")) {
position.set("activity", location.getJsonObject("activity").getString("type"));
}
if (location.containsKey("battery")) {
JsonObject battery = location.getJsonObject("battery");
position.set(Position.KEY_BATTERY_LEVEL, (int) (battery.getJsonNumber("level").doubleValue() * 100));
position.set(Position.KEY_CHARGE, battery.getBoolean("is_charging"));
}
sendResponse(channel, HttpResponseStatus.OK);
return position;
}
}
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