/* * Copyright 2012 - 2017 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 org.jboss.netty.buffer.ChannelBuffer; import org.jboss.netty.buffer.ChannelBuffers; import org.jboss.netty.channel.Channel; import org.traccar.BaseProtocolDecoder; import org.traccar.DeviceSession; import org.traccar.helper.BcdUtil; import org.traccar.helper.BitBuffer; import org.traccar.helper.BitUtil; 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.Network; import org.traccar.model.Position; import java.net.SocketAddress; import java.nio.charset.StandardCharsets; import java.util.LinkedList; import java.util.List; import java.util.regex.Pattern; public class Jt600ProtocolDecoder extends BaseProtocolDecoder { public Jt600ProtocolDecoder(Jt600Protocol protocol) { super(protocol); } private static double convertCoordinate(int raw) { int degrees = raw / 1000000; double minutes = (raw % 1000000) / 10000.0; return degrees + minutes / 60; } private List<Position> decodeBinary(ChannelBuffer buf, Channel channel, SocketAddress remoteAddress) { List<Position> positions = new LinkedList<>(); buf.readByte(); // header boolean longFormat = buf.getUnsignedByte(buf.readerIndex()) == 0x75; String id = String.valueOf(Long.parseLong(ChannelBuffers.hexDump(buf.readBytes(5)))); DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, id); if (deviceSession == null) { return null; } int protocolVersion = 0; if (longFormat) { protocolVersion = buf.readUnsignedByte(); } int version = BitUtil.from(buf.readUnsignedByte(), 4); buf.readUnsignedShort(); // length while (buf.readableBytes() > 1) { Position position = new Position(getProtocolName()); position.setDeviceId(deviceSession.getDeviceId()); DateBuilder dateBuilder = new DateBuilder() .setDay(BcdUtil.readInteger(buf, 2)) .setMonth(BcdUtil.readInteger(buf, 2)) .setYear(BcdUtil.readInteger(buf, 2)) .setHour(BcdUtil.readInteger(buf, 2)) .setMinute(BcdUtil.readInteger(buf, 2)) .setSecond(BcdUtil.readInteger(buf, 2)); position.setTime(dateBuilder.getDate()); double latitude = convertCoordinate(BcdUtil.readInteger(buf, 8)); double longitude = convertCoordinate(BcdUtil.readInteger(buf, 9)); byte flags = buf.readByte(); position.setValid((flags & 0x1) == 0x1); if ((flags & 0x2) == 0) { latitude = -latitude; } position.setLatitude(latitude); if ((flags & 0x4) == 0) { longitude = -longitude; } position.setLongitude(longitude); position.setSpeed(BcdUtil.readInteger(buf, 2)); position.setCourse(buf.readUnsignedByte() * 2.0); if (longFormat) { position.set(Position.KEY_ODOMETER, buf.readUnsignedInt() * 1000); position.set(Position.KEY_SATELLITES, buf.readUnsignedByte()); buf.readUnsignedInt(); // vehicle id combined position.set(Position.KEY_STATUS, buf.readUnsignedShort()); int battery = buf.readUnsignedByte(); if (battery == 0xff) { position.set(Position.KEY_CHARGE, true); } else { position.set(Position.KEY_BATTERY_LEVEL, battery); } CellTower cellTower = CellTower.fromCidLac(buf.readUnsignedShort(), buf.readUnsignedShort()); cellTower.setSignalStrength((int) buf.readUnsignedByte()); position.setNetwork(new Network(cellTower)); if (protocolVersion == 0x17) { buf.readUnsignedByte(); // geofence id buf.skipBytes(3); // reserved } } else if (version == 1) { position.set(Position.KEY_SATELLITES, buf.readUnsignedByte()); position.set(Position.KEY_POWER, buf.readUnsignedByte()); buf.readByte(); // other flags and sensors position.setAltitude(buf.readUnsignedShort()); int cid = buf.readUnsignedShort(); int lac = buf.readUnsignedShort(); int rssi = buf.readUnsignedByte(); if (cid != 0 && lac != 0) { CellTower cellTower = CellTower.fromCidLac(cid, lac); cellTower.setSignalStrength(rssi); position.setNetwork(new Network(cellTower)); } else { position.set(Position.KEY_RSSI, rssi); } } else if (version == 2) { int fuel = buf.readUnsignedByte() << 8; position.set(Position.KEY_STATUS, buf.readUnsignedInt()); position.set(Position.KEY_ODOMETER, buf.readUnsignedInt() * 1000); fuel += buf.readUnsignedByte(); position.set(Position.KEY_FUEL_LEVEL, fuel); } else if (version == 3) { BitBuffer bitBuffer = new BitBuffer(buf); position.set("fuel1", bitBuffer.readUnsigned(12)); position.set("fuel2", bitBuffer.readUnsigned(12)); position.set("fuel3", bitBuffer.readUnsigned(12)); position.set(Position.KEY_ODOMETER, bitBuffer.readUnsigned(20) * 1000); int status = bitBuffer.readUnsigned(24); position.set(Position.KEY_IGNITION, BitUtil.check(status, 0)); position.set(Position.KEY_STATUS, status); } positions.add(position); } buf.readUnsignedByte(); // index return positions; } private static final Pattern PATTERN_W01 = new PatternBuilder() .text("(") .number("(d+),") // id .text("W01,") // type .number("(ddd)(dd.dddd),") // longitude .expression("([EW]),") .number("(dd)(dd.dddd),") // latitude .expression("([NS]),") .expression("([AV]),") // validity .number("(dd)(dd)(dd),") // date (ddmmyy) .number("(dd)(dd)(dd),") // time (hhmmss) .number("(d+),") // speed .number("(d+),") // course .number("(d+),") // power .number("(d+),") // gps signal .number("(d+),") // gsm signal .number("(d+),") // alert type .any() .compile(); private Position decodeW01(String sentence, Channel channel, SocketAddress remoteAddress) { Parser parser = new Parser(PATTERN_W01, sentence); if (!parser.matches()) { return null; } DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, parser.next()); if (deviceSession == null) { return null; } Position position = new Position(getProtocolName()); position.setDeviceId(deviceSession.getDeviceId()); position.setLongitude(parser.nextCoordinate()); position.setLatitude(parser.nextCoordinate()); position.setValid(parser.next().equals("A")); position.setTime(parser.nextDateTime(Parser.DateTimeFormat.DMY_HMS)); position.setSpeed(UnitsConverter.knotsFromKph(parser.nextDouble(0))); position.setCourse(parser.nextDouble(0)); position.set(Position.KEY_POWER, parser.nextDouble(0)); position.set(Position.KEY_GPS, parser.nextInt(0)); position.set(Position.KEY_RSSI, parser.nextInt(0)); position.set("alertType", parser.nextInt(0)); return position; } private static final Pattern PATTERN_U01 = new PatternBuilder() .text("(") .number("(d+),") // id .number("(Udd),") // type .number("d+,").optional() // alarm .number("(dd)(dd)(dd),") // date (ddmmyy) .number("(dd)(dd)(dd),") // time (hhmmss) .expression("([TF]),") // validity .number("(d+.d+),([NS]),") // latitude .number("(d+.d+),([EW]),") // longitude .number("(d+.?d*),") // speed .number("(d+),") // course .number("(d+),") // satellites .number("(d+)%,") // battery .expression("([01]+),") // status .number("(d+),") // cid .number("(d+),") // lac .number("(d+),") // gsm signal .number("(d+),") // odometer .number("(d+)") // serial number .number(",(xx)").optional() // checksum .any() .compile(); private Position decodeU01(String sentence, Channel channel, SocketAddress remoteAddress) { Parser parser = new Parser(PATTERN_U01, sentence); if (!parser.matches()) { return null; } DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, parser.next()); if (deviceSession == null) { return null; } String type = parser.next(); Position position = new Position(getProtocolName()); position.setDeviceId(deviceSession.getDeviceId()); position.setTime(parser.nextDateTime(Parser.DateTimeFormat.DMY_HMS)); position.setValid(parser.next().equals("T")); position.setLatitude(parser.nextCoordinate(Parser.CoordinateFormat.DEG_HEM)); position.setLongitude(parser.nextCoordinate(Parser.CoordinateFormat.DEG_HEM)); position.setSpeed(UnitsConverter.knotsFromMph(parser.nextDouble(0))); position.setCourse(parser.nextDouble(0)); position.set(Position.KEY_SATELLITES, parser.nextInt(0)); position.set(Position.KEY_BATTERY_LEVEL, parser.nextInt(0)); position.set(Position.KEY_STATUS, parser.nextBinInt(0)); CellTower cellTower = CellTower.fromCidLac(parser.nextInt(0), parser.nextInt(0)); cellTower.setSignalStrength(parser.nextInt(0)); position.setNetwork(new Network(cellTower)); position.set(Position.KEY_ODOMETER, parser.nextLong(0) * 1000); position.set(Position.KEY_INDEX, parser.nextInt(0)); if (channel != null) { if (type.equals("U01") || type.equals("U02") || type.equals("U03")) { channel.write("(S39)"); } else if (type.equals("U06")) { channel.write("(S20)"); } } return position; } @Override protected Object decode( Channel channel, SocketAddress remoteAddress, Object msg) throws Exception { ChannelBuffer buf = (ChannelBuffer) msg; char first = (char) buf.getByte(0); if (first == '$') { return decodeBinary(buf, channel, remoteAddress); } else if (first == '(') { String sentence = buf.toString(StandardCharsets.US_ASCII); if (sentence.contains("W01")) { return decodeW01(sentence, channel, remoteAddress); } else { return decodeU01(sentence, channel, remoteAddress); } } return null; } }