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authorAnton Tananaev <anton.tananaev@gmail.com>2019-03-31 22:35:39 -0700
committerAnton Tananaev <anton.tananaev@gmail.com>2019-03-31 22:35:39 -0700
commit59416923dcb3a756eaf532cc4259f2f6625c0762 (patch)
tree9082dae6616deac8fda432b7bfd80e4a52b6d9dc /src/main/java/org/traccar/protocol/Gt06ProtocolDecoder.java
parent79a129dd6327d932133d6b9a50190d3f4927bff9 (diff)
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Convert project to gradle
Diffstat (limited to 'src/main/java/org/traccar/protocol/Gt06ProtocolDecoder.java')
-rw-r--r--src/main/java/org/traccar/protocol/Gt06ProtocolDecoder.java929
1 files changed, 929 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/protocol/Gt06ProtocolDecoder.java b/src/main/java/org/traccar/protocol/Gt06ProtocolDecoder.java
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+++ b/src/main/java/org/traccar/protocol/Gt06ProtocolDecoder.java
@@ -0,0 +1,929 @@
+/*
+ * Copyright 2012 - 2019 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.Context;
+import org.traccar.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.Parser;
+import org.traccar.helper.PatternBuilder;
+import org.traccar.helper.UnitsConverter;
+import org.traccar.model.CellTower;
+import org.traccar.model.Device;
+import org.traccar.model.Network;
+import org.traccar.model.Position;
+import org.traccar.model.WifiAccessPoint;
+
+import java.net.SocketAddress;
+import java.nio.charset.StandardCharsets;
+import java.util.Calendar;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.TimeZone;
+import java.util.regex.Pattern;
+
+public class Gt06ProtocolDecoder extends BaseProtocolDecoder {
+
+ private final Map<Integer, ByteBuf> photos = new HashMap<>();
+
+ public Gt06ProtocolDecoder(Protocol protocol) {
+ super(protocol);
+ }
+
+ public static final int MSG_LOGIN = 0x01;
+ public static final int MSG_GPS = 0x10;
+ public static final int MSG_LBS = 0x11;
+ public static final int MSG_GPS_LBS_1 = 0x12;
+ public static final int MSG_GPS_LBS_2 = 0x22;
+ public static final int MSG_STATUS = 0x13;
+ public static final int MSG_SATELLITE = 0x14;
+ public static final int MSG_STRING = 0x15;
+ public static final int MSG_GPS_LBS_STATUS_1 = 0x16;
+ public static final int MSG_WIFI = 0x17;
+ public static final int MSG_GPS_LBS_STATUS_2 = 0x26;
+ public static final int MSG_GPS_LBS_STATUS_3 = 0x27;
+ public static final int MSG_LBS_MULTIPLE = 0x28;
+ public static final int MSG_LBS_WIFI = 0x2C;
+ public static final int MSG_LBS_EXTEND = 0x18;
+ public static final int MSG_LBS_STATUS = 0x19;
+ public static final int MSG_GPS_PHONE = 0x1A;
+ public static final int MSG_GPS_LBS_EXTEND = 0x1E;
+ public static final int MSG_HEARTBEAT = 0x23;
+ public static final int MSG_ADDRESS_REQUEST = 0x2A;
+ public static final int MSG_ADDRESS_RESPONSE = 0x97;
+ public static final int MSG_AZ735_GPS = 0x32;
+ public static final int MSG_AZ735_ALARM = 0x33;
+ public static final int MSG_X1_GPS = 0x34;
+ public static final int MSG_X1_PHOTO_INFO = 0x35;
+ public static final int MSG_X1_PHOTO_DATA = 0x36;
+ public static final int MSG_WIFI_2 = 0x69;
+ public static final int MSG_COMMAND_0 = 0x80;
+ public static final int MSG_COMMAND_1 = 0x81;
+ public static final int MSG_COMMAND_2 = 0x82;
+ public static final int MSG_TIME_REQUEST = 0x8A;
+ public static final int MSG_INFO = 0x94;
+ public static final int MSG_STRING_INFO = 0x21;
+ public static final int MSG_GPS_2 = 0xA0;
+ public static final int MSG_LBS_2 = 0xA1;
+ public static final int MSG_WIFI_3 = 0xA2;
+ public static final int MSG_FENCE_SINGLE = 0xA3;
+ public static final int MSG_FENCE_MULTI = 0xA4;
+ public static final int MSG_LBS_ALARM = 0xA5;
+ public static final int MSG_LBS_ADDRESS = 0xA7;
+ public static final int MSG_OBD = 0x8C;
+ public static final int MSG_DTC = 0x65;
+ public static final int MSG_PID = 0x66;
+
+ private static boolean isSupported(int type) {
+ return hasGps(type) || hasLbs(type) || hasStatus(type);
+ }
+
+ private static boolean hasGps(int type) {
+ switch (type) {
+ case MSG_GPS:
+ case MSG_GPS_LBS_1:
+ case MSG_GPS_LBS_2:
+ case MSG_GPS_LBS_STATUS_1:
+ case MSG_GPS_LBS_STATUS_2:
+ case MSG_GPS_LBS_STATUS_3:
+ case MSG_GPS_PHONE:
+ case MSG_GPS_LBS_EXTEND:
+ case MSG_GPS_2:
+ case MSG_FENCE_SINGLE:
+ case MSG_FENCE_MULTI:
+ return true;
+ default:
+ return false;
+ }
+ }
+
+ private static boolean hasLbs(int type) {
+ switch (type) {
+ case MSG_LBS:
+ case MSG_LBS_STATUS:
+ case MSG_GPS_LBS_1:
+ case MSG_GPS_LBS_2:
+ case MSG_GPS_LBS_STATUS_1:
+ case MSG_GPS_LBS_STATUS_2:
+ case MSG_GPS_LBS_STATUS_3:
+ case MSG_GPS_2:
+ case MSG_FENCE_SINGLE:
+ case MSG_FENCE_MULTI:
+ case MSG_LBS_ALARM:
+ case MSG_LBS_ADDRESS:
+ return true;
+ default:
+ return false;
+ }
+ }
+
+ private static boolean hasStatus(int type) {
+ switch (type) {
+ case MSG_STATUS:
+ case MSG_LBS_STATUS:
+ case MSG_GPS_LBS_STATUS_1:
+ case MSG_GPS_LBS_STATUS_2:
+ case MSG_GPS_LBS_STATUS_3:
+ return true;
+ default:
+ return false;
+ }
+ }
+
+ private static boolean hasLanguage(int type) {
+ switch (type) {
+ case MSG_GPS_PHONE:
+ case MSG_HEARTBEAT:
+ case MSG_GPS_LBS_STATUS_3:
+ case MSG_LBS_MULTIPLE:
+ case MSG_LBS_2:
+ case MSG_FENCE_MULTI:
+ return true;
+ default:
+ return false;
+ }
+ }
+
+ private void sendResponse(Channel channel, boolean extended, int type, int index, ByteBuf content) {
+ if (channel != null) {
+ ByteBuf response = Unpooled.buffer();
+ int length = 5 + (content != null ? content.readableBytes() : 0);
+ if (extended) {
+ response.writeShort(0x7979);
+ response.writeShort(length);
+ } else {
+ response.writeShort(0x7878);
+ response.writeByte(length);
+ }
+ response.writeByte(type);
+ if (content != null) {
+ response.writeBytes(content);
+ content.release();
+ }
+ response.writeShort(index);
+ response.writeShort(Checksum.crc16(Checksum.CRC16_X25,
+ response.nioBuffer(2, response.writerIndex() - 2)));
+ response.writeByte('\r'); response.writeByte('\n'); // ending
+ channel.writeAndFlush(new NetworkMessage(response, channel.remoteAddress()));
+ }
+ }
+
+ private void sendPhotoRequest(Channel channel, int pictureId) {
+ ByteBuf photo = photos.get(pictureId);
+ ByteBuf content = Unpooled.buffer();
+ content.writeInt(pictureId);
+ content.writeInt(photo.writerIndex());
+ content.writeShort(Math.min(photo.writableBytes(), 1024));
+ sendResponse(channel, false, MSG_X1_PHOTO_DATA, 0, content);
+ }
+
+ private boolean decodeGps(Position position, ByteBuf buf, boolean hasLength, TimeZone timezone) {
+
+ DateBuilder dateBuilder = new DateBuilder(timezone)
+ .setDate(buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte())
+ .setTime(buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte());
+ position.setTime(dateBuilder.getDate());
+
+ if (hasLength && buf.readUnsignedByte() == 0) {
+ return false;
+ }
+
+ position.set(Position.KEY_SATELLITES, BitUtil.to(buf.readUnsignedByte(), 4));
+
+ double latitude = buf.readUnsignedInt() / 60.0 / 30000.0;
+ double longitude = buf.readUnsignedInt() / 60.0 / 30000.0;
+ position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedByte()));
+
+ int flags = buf.readUnsignedShort();
+ position.setCourse(BitUtil.to(flags, 10));
+ position.setValid(BitUtil.check(flags, 12));
+
+ if (!BitUtil.check(flags, 10)) {
+ latitude = -latitude;
+ }
+ if (BitUtil.check(flags, 11)) {
+ longitude = -longitude;
+ }
+
+ position.setLatitude(latitude);
+ position.setLongitude(longitude);
+
+ if (BitUtil.check(flags, 14)) {
+ position.set(Position.KEY_IGNITION, BitUtil.check(flags, 15));
+ }
+
+ return true;
+ }
+
+ private boolean decodeLbs(Position position, ByteBuf buf, boolean hasLength) {
+
+ int length = 0;
+ if (hasLength) {
+ length = buf.readUnsignedByte();
+ if (length == 0) {
+ return false;
+ }
+ }
+
+ int mcc = buf.readUnsignedShort();
+ int mnc = BitUtil.check(mcc, 15) ? buf.readUnsignedShort() : buf.readUnsignedByte();
+
+ position.setNetwork(new Network(CellTower.from(
+ BitUtil.to(mcc, 15), mnc, buf.readUnsignedShort(), buf.readUnsignedMedium())));
+
+ if (length > 9) {
+ buf.skipBytes(length - 9);
+ }
+
+ return true;
+ }
+
+ private boolean decodeStatus(Position position, ByteBuf buf) {
+
+ int status = buf.readUnsignedByte();
+
+ position.set(Position.KEY_STATUS, status);
+ position.set(Position.KEY_IGNITION, BitUtil.check(status, 1));
+ position.set(Position.KEY_CHARGE, BitUtil.check(status, 2));
+ position.set(Position.KEY_BLOCKED, BitUtil.check(status, 7));
+
+ switch (BitUtil.between(status, 3, 6)) {
+ case 1:
+ position.set(Position.KEY_ALARM, Position.ALARM_SHOCK);
+ break;
+ case 2:
+ position.set(Position.KEY_ALARM, Position.ALARM_POWER_CUT);
+ break;
+ case 3:
+ position.set(Position.KEY_ALARM, Position.ALARM_LOW_BATTERY);
+ break;
+ case 4:
+ position.set(Position.KEY_ALARM, Position.ALARM_SOS);
+ break;
+ case 7:
+ position.set(Position.KEY_ALARM, Position.ALARM_REMOVING);
+ break;
+ default:
+ break;
+ }
+
+ position.set(Position.KEY_BATTERY_LEVEL, buf.readUnsignedByte() * 100 / 6);
+ position.set(Position.KEY_RSSI, buf.readUnsignedByte());
+ position.set(Position.KEY_ALARM, decodeAlarm(buf.readUnsignedByte()));
+
+ return true;
+ }
+
+ private String decodeAlarm(short value) {
+ switch (value) {
+ case 0x01:
+ return Position.ALARM_SOS;
+ case 0x02:
+ return Position.ALARM_POWER_CUT;
+ case 0x03:
+ case 0x09:
+ return Position.ALARM_VIBRATION;
+ case 0x04:
+ return Position.ALARM_GEOFENCE_ENTER;
+ case 0x05:
+ return Position.ALARM_GEOFENCE_EXIT;
+ case 0x06:
+ return Position.ALARM_OVERSPEED;
+ case 0x0E:
+ case 0x0F:
+ return Position.ALARM_LOW_BATTERY;
+ case 0x11:
+ return Position.ALARM_POWER_OFF;
+ case 0x13:
+ return Position.ALARM_TAMPERING;
+ case 0x14:
+ return Position.ALARM_DOOR;
+ case 0x29:
+ return Position.ALARM_ACCELERATION;
+ case 0x30:
+ return Position.ALARM_BRAKING;
+ case 0x2A:
+ case 0x2B:
+ return Position.ALARM_CORNERING;
+ case 0x2C:
+ return Position.ALARM_ACCIDENT;
+ case 0x23:
+ return Position.ALARM_FALL_DOWN;
+ default:
+ return null;
+ }
+ }
+
+ private static final Pattern PATTERN_FUEL = new PatternBuilder()
+ .text("!AIOIL,")
+ .number("d+,") // device address
+ .number("d+.d+,") // output value
+ .number("(d+.d+),") // temperature
+ .expression("[^,]+,") // version
+ .number("dd") // back wave
+ .number("d") // software status code
+ .number("d,") // hardware status code
+ .number("(d+.d+),") // measured value
+ .expression("[01],") // movement status
+ .number("d+,") // excited wave times
+ .number("xx") // checksum
+ .compile();
+
+ private Position decodeFuelData(Position position, String sentence) {
+ Parser parser = new Parser(PATTERN_FUEL, sentence);
+ if (!parser.matches()) {
+ return null;
+ }
+
+ position.set(Position.PREFIX_TEMP + 1, parser.nextDouble(0));
+ position.set(Position.KEY_FUEL_LEVEL, parser.nextDouble(0));
+
+ return position;
+ }
+
+ private static final Pattern PATTERN_LOCATION = new PatternBuilder()
+ .text("Current position!")
+ .number("Lat:([NS])(d+.d+),") // latitude
+ .number("Lon:([EW])(d+.d+),") // longitude
+ .text("Course:").number("(d+.d+),") // course
+ .text("Speed:").number("(d+.d+),") // speed
+ .text("DateTime:")
+ .number("(dddd)-(dd)-(dd) +") // date
+ .number("(dd):(dd):(dd)") // time
+ .compile();
+
+ private Position decodeLocationString(Position position, String sentence) {
+ Parser parser = new Parser(PATTERN_LOCATION, sentence);
+ if (!parser.matches()) {
+ return null;
+ }
+
+ position.setValid(true);
+ position.setLatitude(parser.nextCoordinate(Parser.CoordinateFormat.HEM_DEG));
+ position.setLongitude(parser.nextCoordinate(Parser.CoordinateFormat.HEM_DEG));
+ position.setCourse(parser.nextDouble());
+ position.setSpeed(parser.nextDouble());
+ position.setTime(parser.nextDateTime(Parser.DateTimeFormat.YMD_HMS));
+
+ return position;
+ }
+
+ private Object decodeBasic(Channel channel, SocketAddress remoteAddress, ByteBuf buf) {
+
+ int length = buf.readUnsignedByte();
+ int dataLength = length - 5;
+ int type = buf.readUnsignedByte();
+
+ DeviceSession deviceSession = null;
+ if (type != MSG_LOGIN) {
+ deviceSession = getDeviceSession(channel, remoteAddress);
+ if (deviceSession == null) {
+ return null;
+ }
+ if (deviceSession.getTimeZone() == null) {
+ deviceSession.setTimeZone(getTimeZone(deviceSession.getDeviceId()));
+ }
+ }
+
+ if (type == MSG_LOGIN) {
+
+ String imei = ByteBufUtil.hexDump(buf.readSlice(8)).substring(1);
+ buf.readUnsignedShort(); // type
+
+ deviceSession = getDeviceSession(channel, remoteAddress, imei);
+ if (deviceSession != null && deviceSession.getTimeZone() == null) {
+ deviceSession.setTimeZone(getTimeZone(deviceSession.getDeviceId()));
+ }
+
+ if (dataLength > 10) {
+ int extensionBits = buf.readUnsignedShort();
+ int hours = (extensionBits >> 4) / 100;
+ int minutes = (extensionBits >> 4) % 100;
+ int offset = (hours * 60 + minutes) * 60;
+ if ((extensionBits & 0x8) != 0) {
+ offset = -offset;
+ }
+ if (deviceSession != null) {
+ TimeZone timeZone = deviceSession.getTimeZone();
+ if (timeZone.getRawOffset() == 0) {
+ timeZone.setRawOffset(offset * 1000);
+ deviceSession.setTimeZone(timeZone);
+ }
+ }
+
+ }
+
+ if (deviceSession != null) {
+ sendResponse(channel, false, type, buf.getShort(buf.writerIndex() - 6), null);
+ }
+
+ } else if (type == MSG_HEARTBEAT) {
+
+ Position position = new Position(getProtocolName());
+ position.setDeviceId(deviceSession.getDeviceId());
+
+ getLastLocation(position, null);
+
+ int status = buf.readUnsignedByte();
+ position.set(Position.KEY_ARMED, BitUtil.check(status, 0));
+ position.set(Position.KEY_IGNITION, BitUtil.check(status, 1));
+ position.set(Position.KEY_CHARGE, BitUtil.check(status, 2));
+
+ if (buf.readableBytes() >= 2 + 6) {
+ position.set(Position.KEY_BATTERY, buf.readUnsignedShort() * 0.01);
+ }
+ if (buf.readableBytes() >= 1 + 6) {
+ position.set(Position.KEY_RSSI, buf.readUnsignedByte());
+ }
+
+ sendResponse(channel, false, type, buf.getShort(buf.writerIndex() - 6), null);
+
+ return position;
+
+ } else if (type == MSG_ADDRESS_REQUEST) {
+
+ String response = "NA&&NA&&0##";
+ ByteBuf content = Unpooled.buffer();
+ content.writeByte(response.length());
+ content.writeInt(0);
+ content.writeBytes(response.getBytes(StandardCharsets.US_ASCII));
+ sendResponse(channel, true, MSG_ADDRESS_RESPONSE, 0, content);
+
+ } else if (type == MSG_TIME_REQUEST) {
+
+ Calendar calendar = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
+ ByteBuf content = Unpooled.buffer();
+ content.writeByte(calendar.get(Calendar.YEAR) - 2000);
+ content.writeByte(calendar.get(Calendar.MONTH) + 1);
+ content.writeByte(calendar.get(Calendar.DAY_OF_MONTH));
+ content.writeByte(calendar.get(Calendar.HOUR_OF_DAY));
+ content.writeByte(calendar.get(Calendar.MINUTE));
+ content.writeByte(calendar.get(Calendar.SECOND));
+ sendResponse(channel, false, MSG_TIME_REQUEST, 0, content);
+
+ } else if (type == MSG_X1_GPS || type == MSG_X1_PHOTO_INFO) {
+
+ return decodeX1(channel, buf, deviceSession, type);
+
+ } else if (type == MSG_WIFI || type == MSG_WIFI_2) {
+
+ return decodeWifi(channel, buf, deviceSession, type);
+
+ } else if (type == MSG_INFO) {
+
+ Position position = new Position(getProtocolName());
+ position.setDeviceId(deviceSession.getDeviceId());
+
+ getLastLocation(position, null);
+
+ position.set(Position.KEY_POWER, buf.readShort() * 0.01);
+
+ return position;
+
+ } else {
+
+ return decodeBasicOther(channel, buf, deviceSession, type, dataLength);
+
+ }
+
+ return null;
+ }
+
+ private Object decodeX1(Channel channel, ByteBuf buf, DeviceSession deviceSession, int type) {
+
+ if (type == MSG_X1_GPS) {
+
+ Position position = new Position(getProtocolName());
+ position.setDeviceId(deviceSession.getDeviceId());
+
+ buf.readUnsignedInt(); // data and alarm
+
+ decodeGps(position, buf, false, deviceSession.getTimeZone());
+
+ buf.readUnsignedShort(); // terminal info
+
+ position.set(Position.KEY_ODOMETER, buf.readUnsignedInt());
+
+ position.setNetwork(new Network(CellTower.from(
+ buf.readUnsignedShort(), buf.readUnsignedByte(),
+ buf.readUnsignedShort(), buf.readUnsignedInt())));
+
+ long driverId = buf.readUnsignedInt();
+ if (driverId > 0) {
+ position.set(Position.KEY_DRIVER_UNIQUE_ID, String.valueOf(driverId));
+ }
+
+ position.set(Position.KEY_BATTERY, buf.readUnsignedShort() * 0.01);
+ position.set(Position.KEY_POWER, buf.readUnsignedShort() * 0.01);
+
+ return position;
+
+ } else if (type == MSG_X1_PHOTO_INFO) {
+
+ buf.skipBytes(6); // time
+ buf.readUnsignedByte(); // fix status
+ buf.readUnsignedInt(); // latitude
+ buf.readUnsignedInt(); // longitude
+ buf.readUnsignedByte(); // camera id
+ buf.readUnsignedByte(); // photo source
+ buf.readUnsignedByte(); // picture format
+
+ ByteBuf photo = Unpooled.buffer(buf.readInt());
+ int pictureId = buf.readInt();
+ photos.put(pictureId, photo);
+ sendPhotoRequest(channel, pictureId);
+
+ }
+
+ return null;
+ }
+
+ private Object decodeWifi(Channel channel, ByteBuf buf, DeviceSession deviceSession, int type) {
+
+ Position position = new Position(getProtocolName());
+ position.setDeviceId(deviceSession.getDeviceId());
+
+ ByteBuf time = buf.readSlice(6);
+ DateBuilder dateBuilder = new DateBuilder()
+ .setYear(BcdUtil.readInteger(time, 2))
+ .setMonth(BcdUtil.readInteger(time, 2))
+ .setDay(BcdUtil.readInteger(time, 2))
+ .setHour(BcdUtil.readInteger(time, 2))
+ .setMinute(BcdUtil.readInteger(time, 2))
+ .setSecond(BcdUtil.readInteger(time, 2));
+ getLastLocation(position, dateBuilder.getDate());
+
+ Network network = new Network();
+
+ int wifiCount = buf.getByte(2);
+ for (int i = 0; i < wifiCount; i++) {
+ String mac = String.format("%02x:%02x:%02x:%02x:%02x:%02x",
+ buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte(),
+ buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte());
+ network.addWifiAccessPoint(WifiAccessPoint.from(mac, buf.readUnsignedByte()));
+ }
+
+ int cellCount = buf.readUnsignedByte();
+ int mcc = buf.readUnsignedShort();
+ int mnc = buf.readUnsignedByte();
+ for (int i = 0; i < cellCount; i++) {
+ network.addCellTower(CellTower.from(
+ mcc, mnc, buf.readUnsignedShort(), buf.readUnsignedShort(), buf.readUnsignedByte()));
+ }
+
+ position.setNetwork(network);
+
+ if (channel != null) {
+ ByteBuf response = Unpooled.buffer();
+ response.writeShort(0x7878);
+ response.writeByte(0);
+ response.writeByte(type);
+ response.writeBytes(time.resetReaderIndex());
+ response.writeByte('\r');
+ response.writeByte('\n');
+ channel.writeAndFlush(new NetworkMessage(response, channel.remoteAddress()));
+ }
+
+ return position;
+ }
+
+ private Object decodeBasicOther(Channel channel, ByteBuf buf,
+ DeviceSession deviceSession, int type, int dataLength) {
+
+ Position position = new Position(getProtocolName());
+ position.setDeviceId(deviceSession.getDeviceId());
+
+ if (type == MSG_LBS_MULTIPLE || type == MSG_LBS_EXTEND || type == MSG_LBS_WIFI
+ || type == MSG_LBS_2 || type == MSG_WIFI_3) {
+
+ boolean longFormat = type == MSG_LBS_2 || type == MSG_WIFI_3;
+
+ DateBuilder dateBuilder = new DateBuilder(deviceSession.getTimeZone())
+ .setDate(buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte())
+ .setTime(buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte());
+
+ getLastLocation(position, dateBuilder.getDate());
+
+ int mcc = buf.readUnsignedShort();
+ int mnc = BitUtil.check(mcc, 15) ? buf.readUnsignedShort() : buf.readUnsignedByte();
+ Network network = new Network();
+ for (int i = 0; i < 7; i++) {
+ int lac = longFormat ? buf.readInt() : buf.readUnsignedShort();
+ int cid = longFormat ? (int) buf.readLong() : buf.readUnsignedMedium();
+ int rssi = -buf.readUnsignedByte();
+ if (lac > 0) {
+ network.addCellTower(CellTower.from(BitUtil.to(mcc, 15), mnc, lac, cid, rssi));
+ }
+ }
+
+ buf.readUnsignedByte(); // time leads
+
+ if (type != MSG_LBS_MULTIPLE && type != MSG_LBS_2) {
+ int wifiCount = buf.readUnsignedByte();
+ for (int i = 0; i < wifiCount; i++) {
+ String mac = ByteBufUtil.hexDump(buf.readSlice(6)).replaceAll("(..)", "$1:");
+ network.addWifiAccessPoint(WifiAccessPoint.from(
+ mac.substring(0, mac.length() - 1), buf.readUnsignedByte()));
+ }
+ }
+
+ position.setNetwork(network);
+
+ } else if (type == MSG_STRING) {
+
+ getLastLocation(position, null);
+
+ int commandLength = buf.readUnsignedByte();
+
+ if (commandLength > 0) {
+ buf.readUnsignedByte(); // server flag (reserved)
+ position.set(Position.KEY_RESULT,
+ buf.readSlice(commandLength - 1).toString(StandardCharsets.US_ASCII));
+ }
+
+ } else if (isSupported(type)) {
+
+ if (hasGps(type)) {
+ decodeGps(position, buf, false, deviceSession.getTimeZone());
+ } else {
+ getLastLocation(position, null);
+ }
+
+ if (hasLbs(type)) {
+ decodeLbs(position, buf, hasStatus(type));
+ }
+
+ if (hasStatus(type)) {
+ decodeStatus(position, buf);
+ }
+
+ if (type == MSG_GPS_LBS_1 && buf.readableBytes() == 2 + 6) {
+ int mask = buf.readUnsignedShort();
+ position.set(Position.KEY_IGNITION, BitUtil.check(mask, 8 + 7));
+ position.set(Position.PREFIX_IN + 2, BitUtil.check(mask, 8 + 6));
+ if (BitUtil.check(mask, 8 + 4)) {
+ int value = BitUtil.to(mask, 8 + 1);
+ if (BitUtil.check(mask, 8 + 1)) {
+ value = -value;
+ }
+ position.set(Position.PREFIX_TEMP + 1, value);
+ } else {
+ int value = BitUtil.to(mask, 8 + 2);
+ if (BitUtil.check(mask, 8 + 5)) {
+ position.set(Position.PREFIX_ADC + 1, value);
+ } else {
+ position.set(Position.PREFIX_ADC + 1, value * 0.1);
+ }
+ }
+ }
+
+ if (type == MSG_GPS_LBS_1 && buf.readableBytes() == 4 + 6) {
+ position.set(Position.KEY_ODOMETER, buf.readUnsignedInt());
+ }
+
+ if (type == MSG_GPS_LBS_2 && buf.readableBytes() == 3 + 6) {
+ position.set(Position.KEY_IGNITION, buf.readUnsignedByte() > 0);
+ position.set(Position.KEY_EVENT, buf.readUnsignedByte()); // reason
+ position.set(Position.KEY_ARCHIVE, buf.readUnsignedByte() > 0);
+ }
+
+ } else {
+
+ if (dataLength > 0) {
+ buf.skipBytes(dataLength);
+ }
+ if (type != MSG_COMMAND_0 && type != MSG_COMMAND_1 && type != MSG_COMMAND_2) {
+ sendResponse(channel, false, type, buf.getShort(buf.writerIndex() - 6), null);
+ }
+ return null;
+
+ }
+
+ if (hasLanguage(type)) {
+ buf.readUnsignedShort();
+ }
+
+ if (type == MSG_GPS_LBS_STATUS_3 || type == MSG_FENCE_MULTI) {
+ position.set(Position.KEY_GEOFENCE, buf.readUnsignedByte());
+ }
+
+ sendResponse(channel, false, type, buf.getShort(buf.writerIndex() - 6), null);
+
+ return position;
+ }
+
+ private Object decodeExtended(Channel channel, SocketAddress remoteAddress, ByteBuf buf) {
+
+ DeviceSession deviceSession = getDeviceSession(channel, remoteAddress);
+ if (deviceSession == null) {
+ return null;
+ }
+
+ if (deviceSession.getTimeZone() == null) {
+ deviceSession.setTimeZone(getTimeZone(deviceSession.getDeviceId()));
+ }
+
+ Position position = new Position(getProtocolName());
+ position.setDeviceId(deviceSession.getDeviceId());
+
+ buf.readUnsignedShort(); // length
+ int type = buf.readUnsignedByte();
+
+ if (type == MSG_STRING_INFO) {
+
+ buf.readUnsignedInt(); // server flag
+ String data;
+ if (buf.readUnsignedByte() == 1) {
+ data = buf.readSlice(buf.readableBytes() - 6).toString(StandardCharsets.US_ASCII);
+ } else {
+ data = buf.readSlice(buf.readableBytes() - 6).toString(StandardCharsets.UTF_16BE);
+ }
+
+ if (decodeLocationString(position, data) == null) {
+ getLastLocation(position, null);
+ position.set(Position.KEY_RESULT, data);
+ }
+
+ return position;
+
+ } else if (type == MSG_INFO) {
+
+ int subType = buf.readUnsignedByte();
+
+ getLastLocation(position, null);
+
+ if (subType == 0x00) {
+ position.set(Position.KEY_POWER, buf.readUnsignedShort() * 0.01);
+ return position;
+ } else if (subType == 0x05) {
+ int flags = buf.readUnsignedByte();
+ position.set(Position.KEY_DOOR, BitUtil.check(flags, 0));
+ position.set(Position.PREFIX_IO + 1, BitUtil.check(flags, 2));
+ return position;
+ } else if (subType == 0x0a) {
+ buf.skipBytes(8); // imei
+ buf.skipBytes(8); // imsi
+ position.set("iccid", ByteBufUtil.hexDump(buf.readSlice(8)));
+ return position;
+ } else if (subType == 0x0d) {
+ if (buf.getByte(buf.readerIndex()) != '!') {
+ buf.skipBytes(6);
+ }
+ return decodeFuelData(position, buf.toString(
+ buf.readerIndex(), buf.readableBytes() - 4 - 2, StandardCharsets.US_ASCII));
+ }
+
+ } else if (type == MSG_X1_PHOTO_DATA) {
+
+ int pictureId = buf.readInt();
+
+ ByteBuf photo = photos.get(pictureId);
+
+ buf.readUnsignedInt(); // offset
+ buf.readBytes(photo, buf.readUnsignedShort());
+
+ if (photo.writableBytes() > 0) {
+ sendPhotoRequest(channel, pictureId);
+ } else {
+ Device device = Context.getDeviceManager().getById(deviceSession.getDeviceId());
+ position.set(
+ Position.KEY_IMAGE, Context.getMediaManager().writeFile(device.getUniqueId(), photo, "jpg"));
+ photos.remove(pictureId).release();
+ }
+
+ } else if (type == MSG_AZ735_GPS || type == MSG_AZ735_ALARM) {
+
+ if (!decodeGps(position, buf, true, deviceSession.getTimeZone())) {
+ getLastLocation(position, position.getDeviceTime());
+ }
+
+ if (decodeLbs(position, buf, true)) {
+ position.set(Position.KEY_RSSI, buf.readUnsignedByte());
+ }
+
+ buf.skipBytes(buf.readUnsignedByte()); // additional cell towers
+ buf.skipBytes(buf.readUnsignedByte()); // wifi access point
+
+ int status = buf.readUnsignedByte();
+ position.set(Position.KEY_STATUS, status);
+
+ if (type == MSG_AZ735_ALARM) {
+ switch (status) {
+ case 0xA0:
+ position.set(Position.KEY_ARMED, true);
+ break;
+ case 0xA1:
+ position.set(Position.KEY_ARMED, false);
+ break;
+ case 0xA2:
+ case 0xA3:
+ position.set(Position.KEY_ALARM, Position.ALARM_LOW_BATTERY);
+ break;
+ case 0xA4:
+ position.set(Position.KEY_ALARM, Position.ALARM_GENERAL);
+ break;
+ case 0xA5:
+ position.set(Position.KEY_ALARM, Position.ALARM_DOOR);
+ break;
+ default:
+ break;
+ }
+ }
+
+ buf.skipBytes(buf.readUnsignedByte()); // reserved extension
+
+ sendResponse(channel, true, type, buf.getShort(buf.writerIndex() - 6), null);
+
+ return position;
+
+ } else if (type == MSG_OBD) {
+
+ DateBuilder dateBuilder = new DateBuilder(deviceSession.getTimeZone())
+ .setDate(buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte())
+ .setTime(buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte());
+
+ getLastLocation(position, dateBuilder.getDate());
+
+ position.set(Position.KEY_IGNITION, buf.readUnsignedByte() > 0);
+
+ String data = buf.readCharSequence(buf.readableBytes() - 18, StandardCharsets.US_ASCII).toString();
+ for (String pair : data.split(",")) {
+ String[] values = pair.split("=");
+ switch (Integer.parseInt(values[0].substring(0, 2), 16)) {
+ case 40:
+ position.set(Position.KEY_ODOMETER, Integer.parseInt(values[1], 16) * 0.01);
+ break;
+ case 43:
+ position.set(Position.KEY_FUEL_LEVEL, Integer.parseInt(values[1], 16) * 0.01);
+ break;
+ case 45:
+ position.set(Position.KEY_COOLANT_TEMP, Integer.parseInt(values[1], 16) * 0.01);
+ break;
+ case 53:
+ position.set(Position.KEY_OBD_SPEED, Integer.parseInt(values[1], 16) * 0.01);
+ break;
+ case 54:
+ position.set(Position.KEY_RPM, Integer.parseInt(values[1], 16) * 0.01);
+ break;
+ case 71:
+ position.set(Position.KEY_FUEL_USED, Integer.parseInt(values[1], 16) * 0.01);
+ break;
+ case 73:
+ position.set(Position.KEY_HOURS, Integer.parseInt(values[1], 16) * 0.01);
+ break;
+ case 74:
+ position.set(Position.KEY_VIN, values[1]);
+ break;
+ default:
+ break;
+ }
+ }
+
+ return position;
+
+ }
+
+ return null;
+ }
+
+ @Override
+ protected Object decode(
+ Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+ ByteBuf buf = (ByteBuf) msg;
+
+ int header = buf.readShort();
+
+ if (header == 0x7878) {
+ return decodeBasic(channel, remoteAddress, buf);
+ } else if (header == 0x7979) {
+ return decodeExtended(channel, remoteAddress, buf);
+ }
+
+ return null;
+ }
+
+}