/* * Copyright 2015 - 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.buffer.ByteBuf; import io.netty.buffer.ByteBufUtil; import io.netty.buffer.Unpooled; import io.netty.channel.Channel; import org.traccar.BaseProtocolDecoder; import org.traccar.session.DeviceSession; import org.traccar.NetworkMessage; import org.traccar.Protocol; import org.traccar.helper.BcdUtil; import org.traccar.helper.BitUtil; import org.traccar.helper.Checksum; import org.traccar.helper.DateBuilder; 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.text.DateFormat; import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.Date; import java.util.LinkedList; import java.util.List; import java.util.TimeZone; public class HuabaoProtocolDecoder extends BaseProtocolDecoder { public HuabaoProtocolDecoder(Protocol protocol) { super(protocol); } public static final int MSG_GENERAL_RESPONSE = 0x8001; public static final int MSG_GENERAL_RESPONSE_2 = 0x4401; public static final int MSG_HEARTBEAT = 0x0002; public static final int MSG_HEARTBEAT_2 = 0x0506; public static final int MSG_TERMINAL_REGISTER = 0x0100; public static final int MSG_TERMINAL_REGISTER_RESPONSE = 0x8100; public static final int MSG_TERMINAL_CONTROL = 0x8105; public static final int MSG_TERMINAL_AUTH = 0x0102; public static final int MSG_LOCATION_REPORT = 0x0200; public static final int MSG_LOCATION_BATCH_2 = 0x0210; public static final int MSG_ACCELERATION = 0x2070; public static final int MSG_LOCATION_REPORT_2 = 0x5501; public static final int MSG_LOCATION_REPORT_BLIND = 0x5502; public static final int MSG_LOCATION_BATCH = 0x0704; public static final int MSG_OIL_CONTROL = 0XA006; public static final int MSG_TIME_SYNC_REQUEST = 0x0109; public static final int MSG_TIME_SYNC_RESPONSE = 0x8109; public static final int MSG_PHOTO = 0x8888; public static final int MSG_TRANSPARENT = 0x0900; public static final int RESULT_SUCCESS = 0; public static ByteBuf formatMessage(int type, ByteBuf id, boolean shortIndex, ByteBuf data) { ByteBuf buf = Unpooled.buffer(); buf.writeByte(0x7e); buf.writeShort(type); buf.writeShort(data.readableBytes()); buf.writeBytes(id); if (shortIndex) { buf.writeByte(1); } else { buf.writeShort(0); } buf.writeBytes(data); data.release(); buf.writeByte(Checksum.xor(buf.nioBuffer(1, buf.readableBytes() - 1))); buf.writeByte(0x7e); return buf; } private void sendGeneralResponse( Channel channel, SocketAddress remoteAddress, ByteBuf id, int type, int index) { if (channel != null) { ByteBuf response = Unpooled.buffer(); response.writeShort(index); response.writeShort(type); response.writeByte(RESULT_SUCCESS); channel.writeAndFlush(new NetworkMessage( formatMessage(MSG_GENERAL_RESPONSE, id, false, response), remoteAddress)); } } private void sendGeneralResponse2( Channel channel, SocketAddress remoteAddress, ByteBuf id, int type) { if (channel != null) { ByteBuf response = Unpooled.buffer(); response.writeShort(type); response.writeByte(RESULT_SUCCESS); channel.writeAndFlush(new NetworkMessage( formatMessage(MSG_GENERAL_RESPONSE_2, id, true, response), remoteAddress)); } } private String decodeAlarm(long value) { if (BitUtil.check(value, 0)) { return Position.ALARM_SOS; } if (BitUtil.check(value, 1)) { return Position.ALARM_OVERSPEED; } if (BitUtil.check(value, 5)) { return Position.ALARM_GPS_ANTENNA_CUT; } if (BitUtil.check(value, 4) || BitUtil.check(value, 9) || BitUtil.check(value, 10) || BitUtil.check(value, 11)) { return Position.ALARM_FAULT; } if (BitUtil.check(value, 7) || BitUtil.check(value, 18)) { return Position.ALARM_LOW_BATTERY; } if (BitUtil.check(value, 8)) { return Position.ALARM_POWER_OFF; } if (BitUtil.check(value, 17)) { return Position.ALARM_TAMPERING; } if (BitUtil.check(value, 20)) { return Position.ALARM_GEOFENCE; } if (BitUtil.check(value, 28)) { return Position.ALARM_MOVEMENT; } if (BitUtil.check(value, 29)) { return Position.ALARM_ACCIDENT; } return null; } private int readSignedWord(ByteBuf buf) { int value = buf.readUnsignedShort(); return BitUtil.check(value, 15) ? -BitUtil.to(value, 15) : BitUtil.to(value, 15); } private Date readDate(ByteBuf buf, TimeZone timeZone) { DateBuilder dateBuilder = new DateBuilder(timeZone) .setYear(BcdUtil.readInteger(buf, 2)) .setMonth(BcdUtil.readInteger(buf, 2)) .setDay(BcdUtil.readInteger(buf, 2)) .setHour(BcdUtil.readInteger(buf, 2)) .setMinute(BcdUtil.readInteger(buf, 2)) .setSecond(BcdUtil.readInteger(buf, 2)); return dateBuilder.getDate(); } private String decodeId(ByteBuf id) { String serial = ByteBufUtil.hexDump(id); if (serial.matches("[0-9]+")) { return serial; } else { long imei = id.getUnsignedShort(0); imei = (imei << 32) + id.getUnsignedInt(2); return String.valueOf(imei) + Checksum.luhn(imei); } } @Override protected Object decode( Channel channel, SocketAddress remoteAddress, Object msg) throws Exception { ByteBuf buf = (ByteBuf) msg; if (buf.getByte(buf.readerIndex()) == '(') { String sentence = buf.toString(StandardCharsets.US_ASCII); if (sentence.contains("BASE,2")) { DateFormat dateFormat = new SimpleDateFormat("yyyyMMddHHmmss"); dateFormat.setTimeZone(TimeZone.getTimeZone("UTC")); String response = sentence.replace("TIME", dateFormat.format(new Date())); if (channel != null) { channel.writeAndFlush(new NetworkMessage( Unpooled.copiedBuffer(response, StandardCharsets.US_ASCII), remoteAddress)); } return null; } else { return decodeResult(channel, remoteAddress, sentence); } } buf.readUnsignedByte(); // start marker int type = buf.readUnsignedShort(); int attribute = buf.readUnsignedShort(); ByteBuf id = buf.readSlice(6); // phone number int index; if (type == MSG_LOCATION_REPORT_2 || type == MSG_LOCATION_REPORT_BLIND) { index = buf.readUnsignedByte(); } else { index = buf.readUnsignedShort(); } DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, decodeId(id)); if (deviceSession == null) { return null; } if (!deviceSession.contains(DeviceSession.KEY_TIMEZONE)) { deviceSession.set(DeviceSession.KEY_TIMEZONE, getTimeZone(deviceSession.getDeviceId(), "GMT+8")); } if (type == MSG_TERMINAL_REGISTER) { if (channel != null) { ByteBuf response = Unpooled.buffer(); response.writeShort(index); response.writeByte(RESULT_SUCCESS); response.writeBytes(decodeId(id).getBytes(StandardCharsets.US_ASCII)); channel.writeAndFlush(new NetworkMessage( formatMessage(MSG_TERMINAL_REGISTER_RESPONSE, id, false, response), remoteAddress)); } } else if (type == MSG_TERMINAL_AUTH || type == MSG_HEARTBEAT || type == MSG_HEARTBEAT_2 || type == MSG_PHOTO) { sendGeneralResponse(channel, remoteAddress, id, type, index); } else if (type == MSG_LOCATION_REPORT) { sendGeneralResponse(channel, remoteAddress, id, type, index); return decodeLocation(deviceSession, buf); } else if (type == MSG_LOCATION_REPORT_2 || type == MSG_LOCATION_REPORT_BLIND) { if (BitUtil.check(attribute, 15)) { sendGeneralResponse2(channel, remoteAddress, id, type); } return decodeLocation2(deviceSession, buf, type); } else if (type == MSG_LOCATION_BATCH || type == MSG_LOCATION_BATCH_2) { sendGeneralResponse(channel, remoteAddress, id, type, index); return decodeLocationBatch(deviceSession, buf, type); } else if (type == MSG_TIME_SYNC_REQUEST) { if (channel != null) { Calendar calendar = Calendar.getInstance(TimeZone.getTimeZone("UTC")); ByteBuf response = Unpooled.buffer(); response.writeShort(calendar.get(Calendar.YEAR)); response.writeByte(calendar.get(Calendar.MONTH) + 1); response.writeByte(calendar.get(Calendar.DAY_OF_MONTH)); response.writeByte(calendar.get(Calendar.HOUR_OF_DAY)); response.writeByte(calendar.get(Calendar.MINUTE)); response.writeByte(calendar.get(Calendar.SECOND)); channel.writeAndFlush(new NetworkMessage( formatMessage(MSG_TERMINAL_REGISTER_RESPONSE, id, false, response), remoteAddress)); } } else if (type == MSG_ACCELERATION) { Position position = new Position(getProtocolName()); position.setDeviceId(deviceSession.getDeviceId()); getLastLocation(position, null); StringBuilder data = new StringBuilder("["); while (buf.readableBytes() > 2) { buf.skipBytes(6); // time if (data.length() > 1) { data.append(","); } data.append("["); data.append(readSignedWord(buf)); data.append(","); data.append(readSignedWord(buf)); data.append(","); data.append(readSignedWord(buf)); data.append("]"); } data.append("]"); position.set(Position.KEY_G_SENSOR, data.toString()); return position; } else if (type == MSG_TRANSPARENT) { sendGeneralResponse(channel, remoteAddress, id, type, index); return decodeTransparent(deviceSession, buf); } return null; } private Position decodeResult(Channel channel, SocketAddress remoteAddress, String sentence) { DeviceSession deviceSession = getDeviceSession(channel, remoteAddress); if (deviceSession != null) { Position position = new Position(getProtocolName()); position.setDeviceId(deviceSession.getDeviceId()); getLastLocation(position, null); position.set(Position.KEY_RESULT, sentence); return position; } return null; } private void decodeExtension(Position position, ByteBuf buf, int endIndex) { while (buf.readerIndex() < endIndex) { int type = buf.readUnsignedByte(); int length = buf.readUnsignedByte(); switch (type) { case 0x01: position.set(Position.KEY_ODOMETER, buf.readUnsignedInt() * 100L); break; case 0x02: position.set(Position.KEY_FUEL_LEVEL, buf.readUnsignedShort() * 0.1); break; case 0x03: position.set(Position.KEY_OBD_SPEED, buf.readUnsignedShort() * 0.1); break; case 0x80: position.set(Position.KEY_OBD_SPEED, buf.readUnsignedByte()); break; case 0x81: position.set(Position.KEY_RPM, buf.readUnsignedShort()); break; case 0x82: position.set(Position.KEY_POWER, buf.readUnsignedShort() * 0.1); break; case 0x83: position.set(Position.KEY_ENGINE_LOAD, buf.readUnsignedByte()); break; case 0x84: position.set(Position.KEY_COOLANT_TEMP, buf.readUnsignedByte() - 40); break; case 0x85: position.set(Position.KEY_FUEL_CONSUMPTION, buf.readUnsignedShort()); break; case 0x86: position.set("intakeTemp", buf.readUnsignedByte() - 40); break; case 0x87: position.set("intakeFlow", buf.readUnsignedShort()); break; case 0x88: position.set("intakePressure", buf.readUnsignedByte()); break; case 0x89: position.set(Position.KEY_THROTTLE, buf.readUnsignedByte()); break; case 0x8B: position.set(Position.KEY_VIN, buf.readCharSequence(17, StandardCharsets.US_ASCII).toString()); break; case 0x8C: position.set(Position.KEY_OBD_ODOMETER, buf.readUnsignedInt() * 100L); break; case 0x8D: position.set(Position.KEY_ODOMETER_TRIP, buf.readUnsignedShort() * 1000L); break; case 0x8E: position.set(Position.KEY_FUEL_LEVEL, buf.readUnsignedByte()); break; case 0xA0: String codes = buf.readCharSequence(length, StandardCharsets.US_ASCII).toString(); position.set(Position.KEY_DTCS, codes.replace(',', ' ')); break; case 0xCC: position.set(Position.KEY_ICCID, buf.readCharSequence(20, StandardCharsets.US_ASCII).toString()); break; default: buf.skipBytes(length); break; } } } private void decodeCoordinates(Position position, ByteBuf buf) { int status = buf.readInt(); position.set(Position.KEY_IGNITION, BitUtil.check(status, 0)); position.set(Position.KEY_BLOCKED, BitUtil.check(status, 10)); position.set(Position.KEY_CHARGE, BitUtil.check(status, 26)); position.setValid(BitUtil.check(status, 1)); double lat = buf.readUnsignedInt() * 0.000001; double lon = buf.readUnsignedInt() * 0.000001; if (BitUtil.check(status, 2)) { position.setLatitude(-lat); } else { position.setLatitude(lat); } if (BitUtil.check(status, 3)) { position.setLongitude(-lon); } else { position.setLongitude(lon); } } private double decodeCustomDouble(ByteBuf buf) { int b1 = buf.readByte(); int b2 = buf.readUnsignedByte(); int sign = b1 != 0 ? b1 / Math.abs(b1) : 1; return sign * (Math.abs(b1) + b2 / 255.0); } private Position decodeLocation(DeviceSession deviceSession, ByteBuf buf) { Position position = new Position(getProtocolName()); position.setDeviceId(deviceSession.getDeviceId()); position.set(Position.KEY_ALARM, decodeAlarm(buf.readUnsignedInt())); decodeCoordinates(position, buf); position.setAltitude(buf.readShort()); position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedShort() * 0.1)); position.setCourse(buf.readUnsignedShort()); position.setTime(readDate(buf, deviceSession.get(DeviceSession.KEY_TIMEZONE))); if (buf.readableBytes() == 20) { buf.skipBytes(4); // remaining battery and mileage position.set(Position.KEY_ODOMETER, buf.readUnsignedInt() * 1000); position.set(Position.KEY_BATTERY, buf.readUnsignedShort() * 0.1); buf.readUnsignedInt(); // area id position.set(Position.KEY_RSSI, buf.readUnsignedByte()); buf.skipBytes(3); // reserved return position; } while (buf.readableBytes() > 2) { int subtype = buf.readUnsignedByte(); int length = buf.readUnsignedByte(); int endIndex = buf.readerIndex() + length; switch (subtype) { case 0x01: position.set(Position.KEY_ODOMETER, buf.readUnsignedInt() * 100); break; case 0x02: position.set(Position.KEY_FUEL_LEVEL, buf.readUnsignedShort() * 0.1); break; case 0x2b: position.set(Position.KEY_FUEL_CONSUMPTION, buf.readUnsignedInt()); break; case 0x30: position.set(Position.KEY_RSSI, buf.readUnsignedByte()); break; case 0x31: position.set(Position.KEY_SATELLITES, buf.readUnsignedByte()); break; case 0x33: String sentence = buf.readCharSequence(length, StandardCharsets.US_ASCII).toString(); if (sentence.startsWith("*M00")) { String lockStatus = sentence.substring(8, 8 + 7); position.set(Position.KEY_BATTERY, Integer.parseInt(lockStatus.substring(2, 5)) * 0.01); } break; case 0x80: buf.readUnsignedByte(); // content endIndex = buf.writerIndex() - 2; decodeExtension(position, buf, endIndex); break; case 0x91: position.set(Position.KEY_BATTERY, buf.readUnsignedShort() * 0.1); position.set(Position.KEY_RPM, buf.readUnsignedShort()); position.set(Position.KEY_OBD_SPEED, buf.readUnsignedByte()); position.set(Position.KEY_THROTTLE, buf.readUnsignedByte() * 100 / 255); position.set(Position.KEY_ENGINE_LOAD, buf.readUnsignedByte() * 100 / 255); position.set(Position.KEY_COOLANT_TEMP, buf.readUnsignedByte() - 40); buf.readUnsignedShort(); position.set(Position.KEY_FUEL_CONSUMPTION, buf.readUnsignedShort() * 0.01); buf.readUnsignedShort(); buf.readUnsignedInt(); buf.readUnsignedShort(); position.set(Position.KEY_FUEL_USED, buf.readUnsignedShort() * 0.01); break; case 0x94: if (length > 0) { position.set( Position.KEY_VIN, buf.readCharSequence(length, StandardCharsets.US_ASCII).toString()); } break; case 0xA7: position.set(Position.PREFIX_ADC + 1, buf.readUnsignedShort()); position.set(Position.PREFIX_ADC + 2, buf.readUnsignedShort()); break; case 0xAC: position.set(Position.KEY_ODOMETER, buf.readUnsignedInt()); break; case 0xD0: long userStatus = buf.readUnsignedInt(); if (BitUtil.check(userStatus, 3)) { position.set(Position.KEY_ALARM, Position.ALARM_VIBRATION); } break; case 0xD3: position.set(Position.KEY_POWER, buf.readUnsignedShort() * 0.1); break; case 0xD4: position.set(Position.KEY_BATTERY_LEVEL, buf.readUnsignedByte()); break; case 0xD5: if (length == 2) { position.set(Position.KEY_BATTERY, buf.readUnsignedShort() * 0.01); } else { int count = buf.readUnsignedByte(); for (int i = 1; i <= count; i++) { position.set("lock" + i + "Id", ByteBufUtil.hexDump(buf.readSlice(5))); position.set("lock" + i + "Card", ByteBufUtil.hexDump(buf.readSlice(5))); position.set("lock" + i + "Battery", buf.readUnsignedByte()); int status = buf.readUnsignedShort(); position.set("lock" + i + "Locked", !BitUtil.check(status, 5)); } } break; case 0xDA: buf.readUnsignedShort(); // string cut count int deviceStatus = buf.readUnsignedByte(); position.set("string", BitUtil.check(deviceStatus, 0)); position.set(Position.KEY_MOTION, BitUtil.check(deviceStatus, 2)); position.set("cover", BitUtil.check(deviceStatus, 3)); break; case 0xE6: while (buf.readerIndex() < endIndex) { int sensorIndex = buf.readUnsignedByte(); buf.skipBytes(6); // mac position.set(Position.PREFIX_TEMP + sensorIndex, decodeCustomDouble(buf)); position.set("humidity" + sensorIndex, decodeCustomDouble(buf)); } break; case 0xEB: if (buf.getUnsignedShort(buf.readerIndex()) > 200) { Network network = new Network(); int mcc = buf.readUnsignedShort(); int mnc = buf.readUnsignedByte(); while (buf.readerIndex() < endIndex) { network.addCellTower(CellTower.from( mcc, mnc, buf.readUnsignedShort(), buf.readUnsignedShort(), buf.readUnsignedByte())); } position.setNetwork(network); } else { while (buf.readerIndex() < endIndex) { int extendedLength = buf.readUnsignedShort(); int extendedType = buf.readUnsignedShort(); switch (extendedType) { case 0x0001: position.set("fuel1", buf.readUnsignedShort() * 0.1); buf.readUnsignedByte(); // unused break; case 0x0023: position.set("fuel2", Double.parseDouble( buf.readCharSequence(6, StandardCharsets.US_ASCII).toString())); break; case 0x00CE: position.set(Position.KEY_POWER, buf.readUnsignedShort() * 0.01); break; case 0x00D8: Network network = new Network(); network.addCellTower(CellTower.from( buf.readUnsignedShort(), buf.readUnsignedByte(), buf.readUnsignedShort(), buf.readUnsignedInt())); position.setNetwork(network); break; case 0xE1: position.set(Position.KEY_BATTERY_LEVEL, buf.readUnsignedByte()); break; default: buf.skipBytes(extendedLength - 2); break; } } } break; case 0xED: String license = buf.readCharSequence(length, StandardCharsets.US_ASCII).toString().trim(); position.set("driverLicense", license); break; case 0xEE: position.set(Position.KEY_RSSI, buf.readUnsignedByte()); position.set(Position.KEY_POWER, buf.readUnsignedShort() * 0.001); position.set(Position.KEY_BATTERY, buf.readUnsignedShort() * 0.001); position.set(Position.KEY_SATELLITES, buf.readUnsignedByte()); break; case 0xF3: while (buf.readerIndex() < endIndex) { int extendedType = buf.readUnsignedShort(); int extendedLength = buf.readUnsignedByte(); switch (extendedType) { case 0x0002: position.set(Position.KEY_OBD_SPEED, buf.readUnsignedShort() * 0.1); break; case 0x0003: position.set(Position.KEY_RPM, buf.readUnsignedShort()); break; case 0x0004: position.set(Position.KEY_POWER, buf.readUnsignedShort() * 0.001); break; case 0x0005: position.set(Position.KEY_OBD_ODOMETER, buf.readUnsignedInt() * 100); break; case 0x0007: position.set(Position.KEY_FUEL_CONSUMPTION, buf.readUnsignedShort() * 0.1); break; case 0x0008: position.set(Position.KEY_ENGINE_LOAD, buf.readUnsignedShort() * 0.1); break; case 0x0009: position.set(Position.KEY_COOLANT_TEMP, buf.readUnsignedShort() - 40); break; case 0x000B: position.set("intakePressure", buf.readUnsignedShort()); break; case 0x000C: position.set("intakeTemp", buf.readUnsignedShort() - 40); break; case 0x000D: position.set("intakeFlow", buf.readUnsignedShort()); break; case 0x000E: position.set(Position.KEY_THROTTLE, buf.readUnsignedShort() * 100 / 255); break; case 0x0050: position.set(Position.KEY_VIN, buf.readSlice(17).toString(StandardCharsets.US_ASCII)); break; case 0x0100: position.set(Position.KEY_ODOMETER_TRIP, buf.readUnsignedShort() * 0.1); break; case 0x0102: position.set("tripFuel", buf.readUnsignedShort() * 0.1); break; case 0x0112: position.set("hardAccelerationCount", buf.readUnsignedShort()); break; case 0x0113: position.set("hardDecelerationCount", buf.readUnsignedShort()); break; case 0x0114: position.set("hardCorneringCount", buf.readUnsignedShort()); break; default: buf.skipBytes(extendedLength); break; } } break; case 0xFE: if (length == 1) { position.set(Position.KEY_BATTERY_LEVEL, buf.readUnsignedByte()); } else { int mark = buf.readUnsignedByte(); if (mark == 0x7C) { while (buf.readerIndex() < endIndex) { int extendedType = buf.readUnsignedByte(); int extendedLength = buf.readUnsignedByte(); switch (extendedType) { case 0x01: long alarms = buf.readUnsignedInt(); if (BitUtil.check(alarms, 0)) { position.set(Position.KEY_ALARM, Position.ALARM_ACCELERATION); } if (BitUtil.check(alarms, 1)) { position.set(Position.KEY_ALARM, Position.ALARM_BRAKING); } if (BitUtil.check(alarms, 2)) { position.set(Position.KEY_ALARM, Position.ALARM_CORNERING); } if (BitUtil.check(alarms, 3)) { position.set(Position.KEY_ALARM, Position.ALARM_ACCIDENT); } if (BitUtil.check(alarms, 4)) { position.set(Position.KEY_ALARM, Position.ALARM_TAMPERING); } break; default: buf.skipBytes(extendedLength); break; } } } position.set(Position.KEY_BATTERY_LEVEL, buf.readUnsignedByte()); } break; default: break; } buf.readerIndex(endIndex); } return position; } private Position decodeLocation2(DeviceSession deviceSession, ByteBuf buf, int type) { Position position = new Position(getProtocolName()); position.setDeviceId(deviceSession.getDeviceId()); Jt600ProtocolDecoder.decodeBinaryLocation(buf, position); position.setValid(type != MSG_LOCATION_REPORT_BLIND); position.set(Position.KEY_RSSI, buf.readUnsignedByte()); position.set(Position.KEY_SATELLITES, buf.readUnsignedByte()); position.set(Position.KEY_ODOMETER, buf.readUnsignedInt() * 1000L); int battery = buf.readUnsignedByte(); if (battery <= 100) { position.set(Position.KEY_BATTERY_LEVEL, battery); } else if (battery == 0xAA) { position.set(Position.KEY_CHARGE, true); } position.setNetwork(new Network(CellTower.fromCidLac( getConfig(), buf.readUnsignedInt(), buf.readUnsignedShort()))); int product = buf.readUnsignedByte(); int status = buf.readUnsignedShort(); int alarm = buf.readUnsignedShort(); if (product == 1 || product == 2) { if (BitUtil.check(alarm, 0)) { position.set(Position.KEY_ALARM, Position.ALARM_LOW_POWER); } } else if (product == 3) { position.set(Position.KEY_BLOCKED, BitUtil.check(status, 5)); if (BitUtil.check(alarm, 1)) { position.set(Position.KEY_ALARM, Position.ALARM_LOW_POWER); } if (BitUtil.check(alarm, 2)) { position.set(Position.KEY_ALARM, Position.ALARM_VIBRATION); } if (BitUtil.check(alarm, 3)) { position.set(Position.KEY_ALARM, Position.ALARM_LOW_BATTERY); } } position.set(Position.KEY_STATUS, status); while (buf.readableBytes() > 2) { int id = buf.readUnsignedByte(); int length = buf.readUnsignedByte(); switch (id) { case 0x02: position.setAltitude(buf.readShort()); break; case 0x0C: int x = buf.readUnsignedShort(); if (x > 0x8000) { x -= 0x10000; } int y = buf.readUnsignedShort(); if (y > 0x8000) { y -= 0x10000; } int z = buf.readUnsignedShort(); if (z > 0x8000) { z -= 0x10000; } position.set("tilt", String.format("[%d,%d,%d]", x, y, z)); break; default: buf.skipBytes(length); break; } } return position; } private List decodeLocationBatch(DeviceSession deviceSession, ByteBuf buf, int type) { List positions = new LinkedList<>(); int locationType = 0; if (type == MSG_LOCATION_BATCH) { buf.readUnsignedShort(); // count locationType = buf.readUnsignedByte(); } while (buf.readableBytes() > 2) { int length = type == MSG_LOCATION_BATCH_2 ? buf.readUnsignedByte() : buf.readUnsignedShort(); ByteBuf fragment = buf.readSlice(length); Position position = decodeLocation(deviceSession, fragment); if (locationType > 0) { position.set(Position.KEY_ARCHIVE, true); } positions.add(position); } return positions; } private Position decodeTransparent(DeviceSession deviceSession, ByteBuf buf) { int type = buf.readUnsignedByte(); if (type == 0xF0) { Position position = new Position(getProtocolName()); position.setDeviceId(deviceSession.getDeviceId()); Date time = readDate(buf, deviceSession.get(DeviceSession.KEY_TIMEZONE)); if (buf.readUnsignedByte() > 0) { position.set(Position.KEY_ARCHIVE, true); } buf.readUnsignedByte(); // vehicle type int count; int subtype = buf.readUnsignedByte(); switch (subtype) { case 0x01: count = buf.readUnsignedByte(); for (int i = 0; i < count; i++) { int id = buf.readUnsignedShort(); int length = buf.readUnsignedByte(); switch (id) { case 0x0102: case 0x0528: case 0x0546: position.set(Position.KEY_ODOMETER, buf.readUnsignedInt() * 100); break; case 0x0103: position.set(Position.KEY_FUEL_LEVEL, buf.readUnsignedInt() * 0.01); break; case 0x052A: position.set(Position.KEY_FUEL_LEVEL, buf.readUnsignedShort() * 0.01); break; case 0x0105: case 0x052C: position.set(Position.KEY_FUEL_USED, buf.readUnsignedInt() * 0.01); break; case 0x014A: case 0x0537: case 0x0538: case 0x0539: position.set(Position.KEY_FUEL_CONSUMPTION, buf.readUnsignedShort() * 0.01); break; default: switch (length) { case 1: position.set(Position.PREFIX_IO + id, buf.readUnsignedByte()); break; case 2: position.set(Position.PREFIX_IO + id, buf.readUnsignedShort()); break; case 4: position.set(Position.PREFIX_IO + id, buf.readUnsignedInt()); break; default: buf.skipBytes(length); break; } break; } } decodeCoordinates(position, buf); position.setTime(time); break; case 0x03: count = buf.readUnsignedByte(); for (int i = 0; i < count; i++) { int id = buf.readUnsignedByte(); int length = buf.readUnsignedByte(); switch (id) { case 0x1A: position.set(Position.KEY_ALARM, Position.ALARM_ACCELERATION); break; case 0x1B: position.set(Position.KEY_ALARM, Position.ALARM_BRAKING); break; case 0x1C: position.set(Position.KEY_ALARM, Position.ALARM_CORNERING); break; case 0x1D: case 0x1E: case 0x1F: position.set(Position.KEY_ALARM, Position.ALARM_LANE_CHANGE); break; case 0x23: position.set(Position.KEY_ALARM, Position.ALARM_FATIGUE_DRIVING); break; default: break; } buf.skipBytes(length); } decodeCoordinates(position, buf); position.setTime(time); break; case 0x0B: if (buf.readUnsignedByte() > 0) { position.set(Position.KEY_VIN, buf.readCharSequence(17, StandardCharsets.US_ASCII).toString()); } getLastLocation(position, time); break; default: return null; } return position; } return null; } }