/* * Copyright 2012 - 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.buffer.ByteBuf; import io.netty.buffer.Unpooled; import io.netty.channel.Channel; import org.traccar.BaseProtocolDecoder; import org.traccar.Context; import org.traccar.DeviceSession; import org.traccar.NetworkMessage; import org.traccar.helper.Checksum; import org.traccar.helper.Parser; import org.traccar.helper.PatternBuilder; import org.traccar.helper.UnitsConverter; import org.traccar.model.CellTower; import org.traccar.model.Network; import org.traccar.model.Position; import java.net.SocketAddress; import java.nio.charset.StandardCharsets; import java.util.Date; import java.util.LinkedList; import java.util.List; import java.util.regex.Pattern; public class MeitrackProtocolDecoder extends BaseProtocolDecoder { private ByteBuf photo; public MeitrackProtocolDecoder(MeitrackProtocol protocol) { super(protocol); } private static final Pattern PATTERN = new PatternBuilder() .text("$$").expression(".") // flag .number("d+,") // length .number("(d+),") // imei .number("xxx,") // command .number("d+,").optional() .number("(d+),") // event .number("(-?d+.d+),") // latitude .number("(-?d+.d+),") // longitude .number("(dd)(dd)(dd)") // date (yymmdd) .number("(dd)(dd)(dd),") // time (hhmmss) .number("([AV]),") // validity .number("(d+),") // satellites .number("(d+),") // rssi .number("(d+.?d*),") // speed .number("(d+),") // course .number("(d+.?d*),") // hdop .number("(-?d+),") // altitude .number("(d+),") // odometer .number("(d+),") // runtime .number("(d+)|") // mcc .number("(d+)|") // mnc .number("(x+)|") // lac .number("(x+),") // cid .number("(x+),") // state .number("(x+)?|") // adc1 .number("(x+)?|") // adc2 .number("(x+)?|") // adc3 .number("(x+)|") // battery .number("(x+)?,") // power .groupBegin() .expression("([^,]+)?,").optional() // event specific .expression("[^,]*,") // reserved .number("(d+)?,") // protocol .number("(x{4})?") // fuel .groupBegin() .number(",(x{6}(?:|x{6})*)?") // temperature .groupBegin() .number(",(d+)") // data count .expression(",([^*]*)") // data .groupEnd("?") .groupEnd("?") .or() .any() .groupEnd() .text("*") .number("xx") .text("\r\n").optional() .compile(); private String decodeAlarm(int event) { switch (event) { case 1: return Position.ALARM_SOS; case 17: return Position.ALARM_LOW_BATTERY; case 18: return Position.ALARM_LOW_POWER; case 19: return Position.ALARM_OVERSPEED; case 20: return Position.ALARM_GEOFENCE_ENTER; case 21: return Position.ALARM_GEOFENCE_EXIT; case 22: return Position.ALARM_POWER_RESTORED; case 23: return Position.ALARM_POWER_CUT; case 36: return Position.ALARM_TOW; case 44: return Position.ALARM_JAMMING; case 78: return Position.ALARM_ACCIDENT; case 90: case 91: return Position.ALARM_CORNERING; case 129: return Position.ALARM_BRAKING; case 130: return Position.ALARM_ACCELERATION; case 135: return Position.ALARM_FATIGUE_DRIVING; default: return null; } } private Position decodeRegular(Channel channel, SocketAddress remoteAddress, ByteBuf buf) { Parser parser = new Parser(PATTERN, buf.toString(StandardCharsets.US_ASCII)); if (!parser.matches()) { return null; } Position position = new Position(getProtocolName()); DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, parser.next()); if (deviceSession == null) { return null; } position.setDeviceId(deviceSession.getDeviceId()); int event = parser.nextInt(0); position.set(Position.KEY_EVENT, event); position.set(Position.KEY_ALARM, decodeAlarm(event)); position.setLatitude(parser.nextDouble(0)); position.setLongitude(parser.nextDouble(0)); position.setTime(parser.nextDateTime()); position.setValid(parser.next().equals("A")); position.set(Position.KEY_SATELLITES, parser.nextInt()); int rssi = parser.nextInt(0); position.setSpeed(UnitsConverter.knotsFromKph(parser.nextDouble(0))); position.setCourse(parser.nextDouble(0)); position.set(Position.KEY_HDOP, parser.nextDouble()); position.setAltitude(parser.nextDouble(0)); position.set(Position.KEY_ODOMETER, parser.nextInt(0)); position.set("runtime", parser.next()); position.setNetwork(new Network(CellTower.from( parser.nextInt(0), parser.nextInt(0), parser.nextHexInt(0), parser.nextHexInt(0), rssi))); position.set(Position.KEY_STATUS, parser.next()); for (int i = 1; i <= 3; i++) { if (parser.hasNext()) { position.set(Position.PREFIX_ADC + i, parser.nextHexInt(0)); } } String deviceModel = Context.getIdentityManager().getById(deviceSession.getDeviceId()).getModel(); if (deviceModel == null) { deviceModel = ""; } switch (deviceModel.toUpperCase()) { case "MVT340": case "MVT380": position.set(Position.KEY_BATTERY, parser.nextHexInt(0) * 3.0 * 2.0 / 1024.0); position.set(Position.KEY_POWER, parser.nextHexInt(0) * 3.0 * 16.0 / 1024.0); break; case "MT90": position.set(Position.KEY_BATTERY, parser.nextHexInt(0) * 3.3 * 2.0 / 4096.0); position.set(Position.KEY_POWER, parser.nextHexInt(0)); break; case "T1": case "T3": case "MVT100": case "MVT600": case "MVT800": case "TC68": case "TC68S": position.set(Position.KEY_BATTERY, parser.nextHexInt(0) * 3.3 * 2.0 / 4096.0); position.set(Position.KEY_POWER, parser.nextHexInt(0) * 3.3 * 16.0 / 4096.0); break; case "T311": case "T322X": case "T333": case "T355": position.set(Position.KEY_BATTERY, parser.nextHexInt(0) / 100.0); position.set(Position.KEY_POWER, parser.nextHexInt(0) / 100.0); break; default: position.set(Position.KEY_BATTERY, parser.nextHexInt(0)); position.set(Position.KEY_POWER, parser.nextHexInt(0)); break; } String eventData = parser.next(); if (eventData != null && !eventData.isEmpty()) { switch (event) { case 37: position.set(Position.KEY_DRIVER_UNIQUE_ID, eventData); break; default: position.set("eventData", eventData); break; } } int protocol = parser.nextInt(0); if (parser.hasNext()) { String fuel = parser.next(); position.set(Position.KEY_FUEL_LEVEL, Integer.parseInt(fuel.substring(0, 2), 16) + Integer.parseInt(fuel.substring(2), 16) * 0.01); } if (parser.hasNext()) { for (String temp : parser.next().split("\\|")) { int index = Integer.parseInt(temp.substring(0, 2), 16); if (protocol >= 3) { double value = (short) Integer.parseInt(temp.substring(2), 16); position.set(Position.PREFIX_TEMP + index, value * 0.01); } else { double value = Byte.parseByte(temp.substring(2, 4), 16); value += (value < 0 ? -0.01 : 0.01) * Integer.parseInt(temp.substring(4), 16); position.set(Position.PREFIX_TEMP + index, value); } } } if (parser.hasNext(2)) { parser.nextInt(); // count decodeDataFields(position, parser.next().split(",")); } return position; } private void decodeDataFields(Position position, String[] values) { if (values.length > 1 && !values[1].isEmpty()) { position.set("tempData", values[1]); } if (values.length > 5 && !values[5].isEmpty()) { String[] data = values[5].split("\\|"); boolean started = data[0].charAt(1) == '0'; position.set("taximeterOn", started); position.set("taximeterStart", data[1]); if (data.length > 2) { position.set("taximeterEnd", data[2]); position.set("taximeterDistance", Integer.parseInt(data[3])); position.set("taximeterFare", Integer.parseInt(data[4])); position.set("taximeterTrip", data[5]); position.set("taximeterWait", data[6]); } } } private List<Position> decodeBinaryC(Channel channel, SocketAddress remoteAddress, ByteBuf buf) { List<Position> positions = new LinkedList<>(); String flag = buf.toString(2, 1, StandardCharsets.US_ASCII); int index = buf.indexOf(buf.readerIndex(), buf.writerIndex(), (byte) ','); String imei = buf.toString(index + 1, 15, StandardCharsets.US_ASCII); DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, imei); if (deviceSession == null) { return null; } buf.skipBytes(index + 1 + 15 + 1 + 3 + 1 + 2 + 2 + 4); while (buf.readableBytes() >= 0x34) { Position position = new Position(getProtocolName()); position.setDeviceId(deviceSession.getDeviceId()); position.set(Position.KEY_EVENT, buf.readUnsignedByte()); position.setLatitude(buf.readIntLE() * 0.000001); position.setLongitude(buf.readIntLE() * 0.000001); position.setTime(new Date((946684800 + buf.readUnsignedIntLE()) * 1000)); // 946684800 = 2000-01-01 position.setValid(buf.readUnsignedByte() == 1); position.set(Position.KEY_SATELLITES, buf.readUnsignedByte()); int rssi = buf.readUnsignedByte(); position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedShortLE())); position.setCourse(buf.readUnsignedShortLE()); position.set(Position.KEY_HDOP, buf.readUnsignedShortLE() * 0.1); position.setAltitude(buf.readUnsignedShortLE()); position.set(Position.KEY_ODOMETER, buf.readUnsignedIntLE()); position.set("runtime", buf.readUnsignedIntLE()); position.setNetwork(new Network(CellTower.from( buf.readUnsignedShortLE(), buf.readUnsignedShortLE(), buf.readUnsignedShortLE(), buf.readUnsignedShortLE(), rssi))); position.set(Position.KEY_STATUS, buf.readUnsignedShortLE()); position.set(Position.PREFIX_ADC + 1, buf.readUnsignedShortLE()); position.set(Position.KEY_BATTERY, buf.readUnsignedShortLE() * 0.01); position.set(Position.KEY_POWER, buf.readUnsignedShortLE()); buf.readUnsignedIntLE(); // geo-fence positions.add(position); } if (channel != null) { StringBuilder command = new StringBuilder("@@"); command.append(flag).append(27 + positions.size() / 10).append(","); command.append(imei).append(",CCC,").append(positions.size()).append("*"); int checksum = 0; for (int i = 0; i < command.length(); i += 1) { checksum += command.charAt(i); } command.append(String.format("%02x", checksum & 0xff).toUpperCase()); command.append("\r\n"); channel.writeAndFlush(new NetworkMessage(command.toString(), remoteAddress)); // delete processed data } return positions; } private List<Position> decodeBinaryE(Channel channel, SocketAddress remoteAddress, ByteBuf buf) { List<Position> positions = new LinkedList<>(); buf.readerIndex(buf.indexOf(buf.readerIndex(), buf.writerIndex(), (byte) ',') + 1); String imei = buf.readSlice(15).toString(StandardCharsets.US_ASCII); buf.skipBytes(1 + 3 + 1); DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, imei); if (deviceSession == null) { return null; } buf.readUnsignedIntLE(); // remaining cache int count = buf.readUnsignedShortLE(); for (int i = 0; i < count; i++) { Position position = new Position(getProtocolName()); position.setDeviceId(deviceSession.getDeviceId()); buf.readUnsignedShortLE(); // length buf.readUnsignedShortLE(); // index int paramCount = buf.readUnsignedByte(); for (int j = 0; j < paramCount; j++) { int id = buf.readUnsignedByte(); switch (id) { case 0x01: position.set(Position.KEY_EVENT, buf.readUnsignedByte()); break; case 0x05: position.setValid(buf.readUnsignedByte() > 0); break; case 0x06: position.set(Position.KEY_SATELLITES, buf.readUnsignedByte()); break; case 0x07: position.set(Position.KEY_RSSI, buf.readUnsignedByte()); break; default: buf.readUnsignedByte(); break; } } paramCount = buf.readUnsignedByte(); for (int j = 0; j < paramCount; j++) { int id = buf.readUnsignedByte(); switch (id) { case 0x08: position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedShortLE())); break; case 0x09: position.setCourse(buf.readUnsignedShortLE()); break; case 0x0B: position.setAltitude(buf.readShortLE()); break; case 0x19: position.set(Position.KEY_BATTERY, buf.readUnsignedShortLE() * 0.01); break; case 0x1A: position.set(Position.KEY_POWER, buf.readUnsignedShortLE() * 0.01); break; default: buf.readUnsignedShortLE(); break; } } paramCount = buf.readUnsignedByte(); for (int j = 0; j < paramCount; j++) { int id = buf.readUnsignedByte(); switch (id) { case 0x02: position.setLatitude(buf.readIntLE() * 0.000001); break; case 0x03: position.setLongitude(buf.readIntLE() * 0.000001); break; case 0x04: position.setTime(new Date((946684800 + buf.readUnsignedIntLE()) * 1000)); // 2000-01-01 break; case 0x0D: position.set("runtime", buf.readUnsignedIntLE()); break; default: buf.readUnsignedIntLE(); break; } } paramCount = buf.readUnsignedByte(); for (int j = 0; j < paramCount; j++) { buf.readUnsignedByte(); // id buf.skipBytes(buf.readUnsignedByte()); // value } positions.add(position); } return positions; } private void requestPhotoPacket(Channel channel, SocketAddress socketAddress, String imei, String file, int index) { if (channel != null) { String content = "D00," + file + "," + index; int length = 1 + imei.length() + 1 + content.length() + 5; String response = String.format("@@O%02d,%s,%s*", length, imei, content); response += Checksum.sum(response) + "\r\n"; channel.writeAndFlush(new NetworkMessage(response, socketAddress)); } } @Override protected Object decode( Channel channel, SocketAddress remoteAddress, Object msg) throws Exception { ByteBuf buf = (ByteBuf) msg; int index = buf.indexOf(buf.readerIndex(), buf.writerIndex(), (byte) ','); String imei = buf.toString(index + 1, 15, StandardCharsets.US_ASCII); index = buf.indexOf(index + 1, buf.writerIndex(), (byte) ','); String type = buf.toString(index + 1, 3, StandardCharsets.US_ASCII); switch (type) { case "D00": if (photo == null) { photo = Unpooled.buffer(); } index = index + 1 + type.length() + 1; int endIndex = buf.indexOf(index, buf.writerIndex(), (byte) ','); String file = buf.toString(index, endIndex - index, StandardCharsets.US_ASCII); index = endIndex + 1; endIndex = buf.indexOf(index, buf.writerIndex(), (byte) ','); int total = Integer.parseInt(buf.toString(index, endIndex - index, StandardCharsets.US_ASCII)); index = endIndex + 1; endIndex = buf.indexOf(index, buf.writerIndex(), (byte) ','); int current = Integer.parseInt(buf.toString(index, endIndex - index, StandardCharsets.US_ASCII)); buf.readerIndex(endIndex + 1); photo.writeBytes(buf.readSlice(buf.readableBytes() - 1 - 2 - 2)); if (current == total - 1) { Position position = new Position(getProtocolName()); position.setDeviceId(getDeviceSession(channel, remoteAddress, imei).getDeviceId()); getLastLocation(position, null); position.set(Position.KEY_IMAGE, Context.getMediaManager().writeFile(imei, photo, "jpg")); photo.release(); photo = null; return position; } else { if ((current + 1) % 8 == 0) { requestPhotoPacket(channel, remoteAddress, imei, file, current + 1); } return null; } case "D03": photo = Unpooled.buffer(); requestPhotoPacket(channel, remoteAddress, imei, "camera_picture.jpg", 0); return null; case "CCC": return decodeBinaryC(channel, remoteAddress, buf); case "CCE": return decodeBinaryE(channel, remoteAddress, buf); default: return decodeRegular(channel, remoteAddress, buf); } } }