/* * Copyright 2017 - 2022 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.UnitsConverter; import org.traccar.model.Position; import javax.json.Json; import javax.json.JsonArray; import javax.json.JsonNumber; import javax.json.JsonObject; import javax.json.JsonString; import javax.json.JsonValue; import java.io.StringReader; import java.net.SocketAddress; import java.nio.charset.StandardCharsets; import java.util.Date; import java.util.LinkedList; import java.util.List; import java.util.Map; public class FlespiProtocolDecoder extends BaseHttpProtocolDecoder { public FlespiProtocolDecoder(Protocol protocol) { super(protocol); } @Override protected Object decode( Channel channel, SocketAddress remoteAddress, Object msg) throws Exception { FullHttpRequest request = (FullHttpRequest) msg; JsonArray result = Json.createReader(new StringReader(request.content().toString(StandardCharsets.UTF_8))) .readArray(); List<Position> positions = new LinkedList<>(); for (int i = 0; i < result.size(); i++) { JsonObject message = result.getJsonObject(i); JsonString identifier = message.getJsonString("ident"); if (identifier == null) { continue; } DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, identifier.getString()); if (deviceSession == null) { continue; } Position position = new Position(getProtocolName()); position.setDeviceId(deviceSession.getDeviceId()); position.setValid(true); decodePosition(message, position); positions.add(position); } sendResponse(channel, HttpResponseStatus.OK); return positions; } private void decodePosition(JsonObject object, Position position) { for (Map.Entry<String, JsonValue> param : object.entrySet()) { String paramName = param.getKey(); JsonValue paramValue = param.getValue(); int index = -1; if (paramName.contains("#")) { String[] parts = paramName.split("#"); paramName = parts[0]; index = Integer.parseInt(parts[1]); } if (!decodeParam(paramName, index, paramValue, position)) { decodeUnknownParam(param.getKey(), param.getValue(), position); } } if (position.getLatitude() == 0 && position.getLongitude() == 0) { getLastLocation(position, position.getDeviceTime()); } } private boolean decodeParam(String name, int index, JsonValue value, Position position) { switch (name) { case "timestamp": position.setTime(new Date(((JsonNumber) value).longValue() * 1000)); return true; case "position.latitude": position.setLatitude(((JsonNumber) value).doubleValue()); return true; case "position.longitude": position.setLongitude(((JsonNumber) value).doubleValue()); return true; case "position.speed": position.setSpeed(UnitsConverter.knotsFromKph(((JsonNumber) value).doubleValue())); return true; case "position.direction": position.setCourse(((JsonNumber) value).doubleValue()); return true; case "position.altitude": position.setAltitude(((JsonNumber) value).doubleValue()); return true; case "position.satellites": position.set(Position.KEY_SATELLITES, ((JsonNumber) value).intValue()); return true; case "position.valid": position.setValid(value == JsonValue.TRUE); return true; case "position.hdop": position.set(Position.KEY_HDOP, ((JsonNumber) value).doubleValue()); return true; case "position.pdop": position.set(Position.KEY_PDOP, ((JsonNumber) value).doubleValue()); return true; case "din": case "dout": if (name.equals("din")) { position.set(Position.KEY_INPUT, ((JsonNumber) value).intValue()); } else { position.set(Position.KEY_OUTPUT, ((JsonNumber) value).intValue()); } return true; case "gps.vehicle.mileage": position.set(Position.KEY_ODOMETER, ((JsonNumber) value).doubleValue()); return true; case "external.powersource.voltage": position.set(Position.KEY_POWER, ((JsonNumber) value).doubleValue()); return true; case "battery.voltage": position.set(Position.KEY_BATTERY, ((JsonNumber) value).doubleValue()); return true; case "fuel.level": case "can.fuel.level": position.set(Position.KEY_FUEL_LEVEL, ((JsonNumber) value).doubleValue()); return true; case "engine.rpm": case "can.engine.rpm": position.set(Position.KEY_RPM, ((JsonNumber) value).doubleValue()); return true; case "can.engine.temperature": position.set(Position.PREFIX_TEMP + Math.max(index, 0), ((JsonNumber) value).doubleValue()); return true; case "engine.ignition.status": position.set(Position.KEY_IGNITION, value == JsonValue.TRUE); return true; case "movement.status": position.set(Position.KEY_MOTION, value == JsonValue.TRUE); return true; case "device.temperature": position.set(Position.KEY_DEVICE_TEMP, ((JsonNumber) value).doubleValue()); return true; case "ibutton.code": position.set(Position.KEY_DRIVER_UNIQUE_ID, ((JsonString) value).getString()); return true; case "vehicle.vin": position.set(Position.KEY_VIN, ((JsonString) value).getString()); return true; case "alarm.event.trigger": if (value == JsonValue.TRUE) { position.set(Position.KEY_ALARM, Position.ALARM_GENERAL); } return true; case "towing.event.trigger": case "towing.alarm.status": if (value == JsonValue.TRUE) { position.set(Position.KEY_ALARM, Position.ALARM_TOW); } return true; case "geofence.event.enter": if (value == JsonValue.TRUE) { position.set(Position.KEY_ALARM, Position.ALARM_GEOFENCE_ENTER); } return true; case "geofence.event.exit": if (value == JsonValue.TRUE) { position.set(Position.KEY_ALARM, Position.ALARM_GEOFENCE_EXIT); } return true; case "shock.event.trigger": if (value == JsonValue.TRUE) { position.set(Position.KEY_ALARM, Position.ALARM_VIBRATION); } return true; case "overspeeding.event.trigger": if (value == JsonValue.TRUE) { position.set(Position.KEY_ALARM, Position.ALARM_OVERSPEED); } return true; case "harsh.acceleration.event.trigger": if (value == JsonValue.TRUE) { position.set(Position.KEY_ALARM, Position.ALARM_ACCELERATION); } return true; case "harsh.braking.event.trigger": if (value == JsonValue.TRUE) { position.set(Position.KEY_ALARM, Position.ALARM_BRAKING); } return true; case "harsh.cornering.event.trigger": if (value == JsonValue.TRUE) { position.set(Position.KEY_ALARM, Position.ALARM_CORNERING); } return true; case "gnss.antenna.cut.status": if (value == JsonValue.TRUE) { position.set(Position.KEY_ALARM, Position.ALARM_GPS_ANTENNA_CUT); } return true; case "gsm.jamming.event.trigger": if (value == JsonValue.TRUE) { position.set(Position.KEY_ALARM, Position.ALARM_JAMMING); } return true; case "hood.open.status": if (value == JsonValue.TRUE) { position.set(Position.KEY_ALARM, Position.ALARM_BONNET); } return true; case "custom.wln_accel_max": position.set("maxAcceleration", ((JsonNumber) value).doubleValue()); return true; case "custom.wln_brk_max": position.set("maxBraking", ((JsonNumber) value).doubleValue()); return true; case "custom.wln_crn_max": position.set("maxCornering", ((JsonNumber) value).doubleValue()); return true; default: return false; } } private void decodeUnknownParam(String name, JsonValue value, Position position) { if (value instanceof JsonNumber) { if (((JsonNumber) value).isIntegral()) { position.set(name, ((JsonNumber) value).longValue()); } else { position.set(name, ((JsonNumber) value).doubleValue()); } position.set(name, ((JsonNumber) value).doubleValue()); } else if (value instanceof JsonString) { position.set(name, ((JsonString) value).getString()); } else if (value == JsonValue.TRUE || value == JsonValue.FALSE) { position.set(name, value == JsonValue.TRUE); } } }