/* * Copyright 2017 - 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.DeviceSession; import org.traccar.Protocol; import org.traccar.helper.BitUtil; import org.traccar.helper.UnitsConverter; import org.traccar.model.Position; import javax.json.Json; import javax.json.JsonArray; import javax.json.JsonObject; import java.io.StringReader; import java.net.SocketAddress; import java.nio.charset.StandardCharsets; import java.text.DateFormat; import java.text.ParseException; import java.text.SimpleDateFormat; import java.time.OffsetDateTime; import java.util.Collection; import java.util.Date; import java.util.LinkedList; import java.util.List; import java.util.TimeZone; public class DmtHttpProtocolDecoder extends BaseHttpProtocolDecoder { public DmtHttpProtocolDecoder(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(); Object result; if (root.containsKey("device")) { result = decodeEdge(channel, remoteAddress, root); } else { result = decodeTraditional(channel, remoteAddress, root); } sendResponse(channel, result != null ? HttpResponseStatus.OK : HttpResponseStatus.BAD_REQUEST); return result; } private Collection<Position> decodeTraditional( Channel channel, SocketAddress remoteAddress, JsonObject root) throws ParseException { DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); dateFormat.setTimeZone(TimeZone.getTimeZone("UTC")); DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, root.getString("IMEI")); if (deviceSession == null) { return null; } List<Position> positions = new LinkedList<>(); JsonArray records = root.getJsonArray("Records"); for (int i = 0; i < records.size(); i++) { Position position = new Position(getProtocolName()); position.setDeviceId(deviceSession.getDeviceId()); JsonObject record = records.getJsonObject(i); position.set(Position.KEY_INDEX, record.getInt("SeqNo")); position.set(Position.KEY_EVENT, record.getInt("Reason")); position.setDeviceTime(dateFormat.parse(record.getString("DateUTC"))); JsonArray fields = record.getJsonArray("Fields"); for (int j = 0; j < fields.size(); j++) { JsonObject field = fields.getJsonObject(j); switch (field.getInt("FType")) { case 0: position.setFixTime(dateFormat.parse(field.getString("GpsUTC"))); position.setLatitude(field.getJsonNumber("Lat").doubleValue()); position.setLongitude(field.getJsonNumber("Long").doubleValue()); position.setAltitude(field.getInt("Alt")); position.setSpeed(UnitsConverter.knotsFromCps(field.getInt("Spd"))); position.setCourse(field.getInt("Head")); position.setAccuracy(field.getInt("PosAcc")); position.setValid(field.getInt("GpsStat") > 0); break; case 2: int input = field.getInt("DIn"); int output = field.getInt("DOut"); position.set(Position.KEY_IGNITION, BitUtil.check(input, 0)); position.set(Position.KEY_INPUT, input); position.set(Position.KEY_OUTPUT, output); position.set(Position.KEY_STATUS, field.getInt("DevStat")); break; case 6: JsonObject adc = field.getJsonObject("AnalogueData"); if (adc.containsKey("1")) { position.set(Position.KEY_BATTERY, adc.getInt("1") * 0.001); } if (adc.containsKey("2")) { position.set(Position.KEY_POWER, adc.getInt("2") * 0.01); } if (adc.containsKey("3")) { position.set(Position.KEY_DEVICE_TEMP, adc.getInt("3") * 0.01); } if (adc.containsKey("4")) { position.set(Position.KEY_RSSI, adc.getInt("4")); } if (adc.containsKey("5")) { position.set("solarPower", adc.getInt("5") * 0.001); } break; default: break; } } positions.add(position); } return positions; } private Position decodeEdge( Channel channel, SocketAddress remoteAddress, JsonObject root) { JsonObject device = root.getJsonObject("device"); DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, device.getString("imei")); if (deviceSession == null) { return null; } Position position = new Position(getProtocolName()); position.setDeviceId(deviceSession.getDeviceId()); Date time = new Date(OffsetDateTime.parse(root.getString("date")).toInstant().toEpochMilli()); if (root.containsKey("lat") && root.containsKey("lng")) { position.setValid(true); position.setTime(time); position.setLatitude(root.getJsonNumber("lat").doubleValue()); position.setLongitude(root.getJsonNumber("lng").doubleValue()); position.setAccuracy(root.getJsonNumber("posAcc").doubleValue()); } else { getLastLocation(position, time); } position.set(Position.KEY_INDEX, root.getInt("sqn")); position.set(Position.KEY_EVENT, root.getInt("reason")); if (root.containsKey("analogues")) { JsonArray analogues = root.getJsonArray("analogues"); for (int i = 0; i < analogues.size(); i++) { JsonObject adc = analogues.getJsonObject(i); position.set(Position.PREFIX_ADC + adc.getInt("id"), adc.getInt("val")); } } if (root.containsKey("inputs")) { int input = root.getInt("inputs"); position.set(Position.KEY_IGNITION, BitUtil.check(input, 0)); position.set(Position.KEY_INPUT, input); } if (root.containsKey("outputs")) { position.set(Position.KEY_OUTPUT, root.getInt("outputs")); } if (root.containsKey("status")) { position.set(Position.KEY_STATUS, root.getInt("status")); } if (root.containsKey("counters")) { JsonArray counters = root.getJsonArray("counters"); for (int i = 0; i < counters.size(); i++) { JsonObject counter = counters.getJsonObject(i); switch (counter.getInt("id")) { case 0: position.set(Position.KEY_BATTERY, counter.getInt("val") * 0.001); break; case 1: position.set(Position.KEY_BATTERY_LEVEL, counter.getInt("val") * 0.01); break; default: position.set("counter" + counter.getInt("id"), counter.getInt("val")); break; } } } return position; } }