/* * 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.channel.Channel; import org.traccar.BaseProtocolDecoder; import org.traccar.Context; import org.traccar.DeviceSession; import org.traccar.helper.BitUtil; 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 org.traccar.model.WifiAccessPoint; import java.net.SocketAddress; import java.util.LinkedList; import java.util.List; import java.util.regex.Matcher; import java.util.regex.Pattern; public class Gl200ProtocolDecoder extends BaseProtocolDecoder { private boolean ignoreFixTime; public Gl200ProtocolDecoder(Gl200Protocol protocol) { super(protocol); ignoreFixTime = Context.getConfig().getBoolean(getProtocolName() + ".ignoreFixTime"); } private static final Pattern PATTERN_ACK = new PatternBuilder() .text("+ACK:GT") .expression("...,") // type .number("([0-9A-Z]{2}xxxx),") // protocol version .number("(d{15}|x{14}),") // imei .any().text(",") .number("(dddd)(dd)(dd)") // date (yyyymmdd) .number("(dd)(dd)(dd),") // time (hhmmss) .number("(xxxx)") // counter .text("$").optional() .compile(); private static final Pattern PATTERN_INF = new PatternBuilder() .text("+").expression("(?:RESP|BUFF):GTINF,") .number("[0-9A-Z]{2}xxxx,") // protocol version .number("(d{15}|x{14}),") // imei .expression("(?:[0-9A-Z]{17},)?") // vin .expression("(?:[^,]+)?,") // device name .number("(xx),") // state .expression("(?:[0-9F]{20})?,") // iccid .number("d{1,2},") .number("d{1,2},") .expression("[01],") // external power .number("([d.]+)?,") // odometer or external power .number("d*,") // backup battery or lightness .number("(d+.d+),") // battery .expression("([01]),") // charging .number("(?:d),") // led .number("(?:d)?,") // gps on need .number("(?:d)?,") // gps antenna type .number("(?:d),").optional() // gps antenna state .number("d{14},") // last fix time .groupBegin() .number("(d+),") // battery percentage .expression("[01]?,") // flash type .number("(-?[d.]+)?,,,") // temperature .or() .expression("(?:[01])?,").optional() // pin15 mode .number("(d+)?,") // adc1 .number("(d+)?,").optional() // adc2 .number("(xx)?,") // digital input .number("(xx)?,") // digital output .number("[-+]dddd,") // timezone .expression("[01],") // daylight saving .groupEnd() .number("(dddd)(dd)(dd)") // date (yyyymmdd) .number("(dd)(dd)(dd),") // time (hhmmss) .number("(xxxx)") // counter .text("$").optional() .compile(); private static final Pattern PATTERN_VER = new PatternBuilder() .text("+").expression("(?:RESP|BUFF):GTVER,") .number("[0-9A-Z]{2}xxxx,") // protocol version .number("(d{15}|x{14}),") // imei .expression("[^,]*,") // device name .expression("([^,]*),") // device type .number("(xxxx),") // firmware version .number("(xxxx),") // hardware version .number("(dddd)(dd)(dd)") // date (yyyymmdd) .number("(dd)(dd)(dd),") // time (hhmmss) .number("(xxxx)") // counter .text("$").optional() .compile(); private static final Pattern PATTERN_LOCATION = new PatternBuilder() .number("(d{1,2})?,") // hdop .number("(d{1,3}.d)?,") // speed .number("(d{1,3})?,") // course .number("(-?d{1,5}.d)?,") // altitude .number("(-?d{1,3}.d{6})?,") // longitude .number("(-?d{1,2}.d{6})?,") // latitude .number("(dddd)(dd)(dd)") // date (yyyymmdd) .number("(dd)(dd)(dd)").optional(2) // time (hhmmss) .text(",") .number("(d+)?,") // mcc .number("(d+)?,") // mnc .groupBegin() .number("(d+),") // lac .number("(d+),") // cid .or() .number("(x+)?,") // lac .number("(x+)?,") // cid .groupEnd() .number("(?:d+|(d+.d))?,") // odometer .compile(); private static final Pattern PATTERN_OBD = new PatternBuilder() .text("+RESP:GTOBD,") .number("[0-9A-Z]{2}xxxx,") // protocol version .number("(d{15}|x{14}),") // imei .expression("(?:[0-9A-Z]{17})?,") // vin .expression("[^,]{0,20},") // device name .expression("[01],") // report type .number("x{1,8},") // report mask .expression("(?:[0-9A-Z]{17})?,") // vin .number("[01],") // obd connect .number("(?:d{1,5})?,") // obd voltage .number("(?:x{8})?,") // support pids .number("(d{1,5})?,") // engine rpm .number("(d{1,3})?,") // speed .number("(-?d{1,3})?,") // coolant temp .number("(d+.?d*|Inf|NaN)?,") // fuel consumption .number("(d{1,5})?,") // dtcs cleared distance .number("(?:d{1,5})?,") .expression("([01])?,") // obd connect .number("(d{1,3})?,") // number of dtcs .number("(x*),") // dtcs .number("(d{1,3})?,") // throttle .number("(?:d{1,3})?,") // engine load .number("(d{1,3})?,") // fuel level .expression("(?:[0-9A],)?") // obd protocol .number("(d+),") // odometer .expression(PATTERN_LOCATION.pattern()) .number("(d{1,7}.d)?,") // odometer .number("(dddd)(dd)(dd)") // date (yyyymmdd) .number("(dd)(dd)(dd)").optional(2) // time (hhmmss) .text(",") .number("(xxxx)") // count number .text("$").optional() .compile(); private static final Pattern PATTERN_FRI = new PatternBuilder() .text("+").expression("(?:RESP|BUFF):GTFRI,") .number("(?:[0-9A-Z]{2}xxxx)?,") // protocol version .number("(d{15}|x{14}),") // imei .expression("(?:([0-9A-Z]{17}),)?") // vin .expression("[^,]*,") // device name .number("(d+)?,") // power .number("d{1,2},") // report type .number("d{1,2},") // count .expression("((?:") .expression(PATTERN_LOCATION.pattern()) .expression(")+)") .groupBegin() .number("(d{1,7}.d)?,").optional() // odometer .number("(d{1,3})?,") // battery .or() .number("(d{1,7}.d)?,") // odometer .number("(d{5}:dd:dd)?,") // hour meter .number("(x+)?,") // adc 1 .number("(x+)?,") // adc 2 .number("(d{1,3})?,") // battery .number("(?:(xx)(xx)(xx))?,") // device status .number("(d+)?,") // rpm .number("(?:d+.?d*|Inf|NaN)?,") // fuel consumption .number("(d+)?,") // fuel level .groupEnd() .number("(dddd)(dd)(dd)") // date (yyyymmdd) .number("(dd)(dd)(dd)").optional(2) // time (hhmmss) .text(",") .number("(xxxx)") // count number .text("$").optional() .compile(); private static final Pattern PATTERN_ERI = new PatternBuilder() .text("+").expression("(?:RESP|BUFF):GTERI,") .number("(?:[0-9A-Z]{2}xxxx)?,") // protocol version .number("(d{15}|x{14}),") // imei .expression("[^,]*,") // device name .number("x{8},") // mask .number("(d+)?,") // power .number("d{1,2},") // report type .number("d{1,2},") // count .expression("((?:") .expression(PATTERN_LOCATION.pattern()) .expression(")+)") .number("(d{1,7}.d)?,") // odometer .number("(d{5}:dd:dd)?,") // hour meter .number("(x+)?,") // adc 1 .number("(x+)?,") // adc 2 .number("(d{1,3})?,") // battery .number("(?:(xx)(xx)(xx))?,") // device status .any() .number("(dddd)(dd)(dd)") // date (yyyymmdd) .number("(dd)(dd)(dd)").optional(2) // time (hhmmss) .text(",") .number("(xxxx)") // count number .text("$").optional() .compile(); private static final Pattern PATTERN_IGN = new PatternBuilder() .text("+").expression("(?:RESP|BUFF):GTIG[NF],") .number("(?:[0-9A-Z]{2}xxxx)?,") // protocol version .number("(d{15}|x{14}),") // imei .expression("[^,]*,") // device name .number("d+,") // ignition off duration .expression(PATTERN_LOCATION.pattern()) .number("(d{5}:dd:dd)?,") // hour meter .number("(d{1,7}.d)?,") // odometer .number("(dddd)(dd)(dd)") // date (yyyymmdd) .number("(dd)(dd)(dd)").optional(2) // time (hhmmss) .text(",") .number("(xxxx)") // count number .text("$").optional() .compile(); private static final Pattern PATTERN_IDA = new PatternBuilder() .text("+RESP:GTIDA,") .number("(?:[0-9A-Z]{2}xxxx)?,") // protocol version .number("(d{15}|x{14}),") // imei .expression("[^,]*,,") // device name .number("([^,]+),") // rfid .expression("[01],") // report type .number("1,") // count .expression(PATTERN_LOCATION.pattern()) .number("(d+.d),") // odometer .text(",,,,") .number("(dddd)(dd)(dd)") // date (yyyymmdd) .number("(dd)(dd)(dd)").optional(2) // time (hhmmss) .text(",") .number("(xxxx)") // count number .text("$").optional() .compile(); private static final Pattern PATTERN_WIF = new PatternBuilder() .text("+RESP:GTWIF,") .number("(?:[0-9A-Z]{2}xxxx)?,") // protocol version .number("(d{15}|x{14}),") // imei .expression("[^,]*,") // device name .number("(d+),") // count .number("((?:x{12},-?d+,,,,)+),,,,") // wifi .number("(d{1,3}),") // battery .number("(dddd)(dd)(dd)") // date (yyyymmdd) .number("(dd)(dd)(dd)").optional(2) // time (hhmmss) .text(",") .number("(xxxx)") // count number .text("$").optional() .compile(); private static final Pattern PATTERN_GSM = new PatternBuilder() .text("+RESP:GTGSM,") .number("(?:[0-9A-Z]{2}xxxx)?,") // protocol version .number("(d{15}|x{14}),") // imei .expression("(?:STR|CTN|NMR|RTL),") // fix type .expression("(.*)") // cells .number("(dddd)(dd)(dd)") // date (yyyymmdd) .number("(dd)(dd)(dd)").optional(2) // time (hhmmss) .text(",") .number("(xxxx)") // count number .text("$").optional() .compile(); private static final Pattern PATTERN = new PatternBuilder() .text("+").expression("(?:RESP|BUFF):GT...,") .number("(?:[0-9A-Z]{2}xxxx)?,") // protocol version .number("(d{15}|x{14}),") // imei .expression("[^,]*,") // device name .number("d*,") .number("(d{1,2}),") // report type .number("d{1,2},") // count .expression(PATTERN_LOCATION.pattern()) .groupBegin() .number("(d{1,7}.d)?,").optional() // odometer .number("(d{1,3})?,") // battery .or() .number("(d{1,7}.d)?,") // odometer .groupEnd() .number("(dddd)(dd)(dd)") // date (yyyymmdd) .number("(dd)(dd)(dd)") // time (hhmmss) .text(",") .number("(xxxx)") // count number .text("$").optional() .compile(); private static final Pattern PATTERN_BASIC = new PatternBuilder() .text("+").expression("(?:RESP|BUFF)").text(":") .expression("GT...,") .number("(?:[0-9A-Z]{2}xxxx)?,") // protocol version .number("(d{15}|x{14}),") // imei .any() .number("(d{1,2})?,") // hdop .number("(d{1,3}.d)?,") // speed .number("(d{1,3})?,") // course .number("(-?d{1,5}.d)?,") // altitude .number("(-?d{1,3}.d{6})?,") // longitude .number("(-?d{1,2}.d{6})?,") // latitude .number("(dddd)(dd)(dd)") // date (yyyymmdd) .number("(dd)(dd)(dd)").optional(2) // time (hhmmss) .text(",") .number("(d+),") // mcc .number("(d+),") // mnc .number("(x+),") // lac .number("(x+),").optional(4) // cell .any() .number("(dddd)(dd)(dd)") // date (yyyymmdd) .number("(dd)(dd)(dd)").optional(2) // time (hhmmss) .text(",") .number("(xxxx)") // count number .text("$").optional() .compile(); private Object decodeAck(Channel channel, SocketAddress remoteAddress, String sentence, String type) { Parser parser = new Parser(PATTERN_ACK, sentence); if (parser.matches()) { String protocolVersion = parser.next(); DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, parser.next()); if (deviceSession == null) { return null; } if (type.equals("HBD")) { if (channel != null) { parser.skip(6); channel.write("+SACK:GTHBD," + protocolVersion + "," + parser.next() + "$", remoteAddress); } } else { Position position = new Position(); position.setProtocol(getProtocolName()); position.setDeviceId(deviceSession.getDeviceId()); getLastLocation(position, parser.nextDateTime()); position.setValid(false); position.set(Position.KEY_RESULT, "Command " + type + " accepted"); return position; } } return null; } private Position initPosition(Parser parser, Channel channel, SocketAddress remoteAddress) { if (parser.matches()) { DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, parser.next()); if (deviceSession != null) { Position position = new Position(); position.setProtocol(getProtocolName()); position.setDeviceId(deviceSession.getDeviceId()); return position; } } return null; } private void decodeDeviceTime(Position position, Parser parser) { if (parser.hasNext(6)) { if (ignoreFixTime) { position.setTime(parser.nextDateTime()); } else { position.setDeviceTime(parser.nextDateTime()); } } } private Object decodeInf(Channel channel, SocketAddress remoteAddress, String sentence) { Parser parser = new Parser(PATTERN_INF, sentence); Position position = initPosition(parser, channel, remoteAddress); if (position == null) { return null; } position.set(Position.KEY_STATUS, parser.next()); parser.next(); // odometer or external power position.set(Position.KEY_BATTERY, parser.nextDouble(0)); position.set(Position.KEY_CHARGE, parser.nextInt(0) == 1); if (parser.hasNext()) { position.set(Position.KEY_BATTERY, parser.next() + "%"); } position.set(Position.PREFIX_TEMP + 1, parser.next()); position.set(Position.PREFIX_ADC + 1, parser.next()); position.set(Position.PREFIX_ADC + 2, parser.next()); position.set(Position.KEY_INPUT, parser.next()); position.set(Position.KEY_OUTPUT, parser.next()); getLastLocation(position, parser.nextDateTime()); position.set(Position.KEY_INDEX, parser.nextHexInt(0)); return position; } private Object decodeVer(Channel channel, SocketAddress remoteAddress, String sentence) { Parser parser = new Parser(PATTERN_VER, sentence); Position position = initPosition(parser, channel, remoteAddress); if (position == null) { return null; } position.set("deviceType", parser.next()); position.set(Position.KEY_VERSION_FW, parser.nextHexInt(0)); position.set(Position.KEY_VERSION_HW, parser.nextHexInt(0)); getLastLocation(position, parser.nextDateTime()); return position; } private void decodeLocation(Position position, Parser parser) { int hdop = parser.nextInt(0); position.setValid(hdop > 0); position.set(Position.KEY_HDOP, hdop); position.setSpeed(UnitsConverter.knotsFromKph(parser.nextDouble(0))); position.setCourse(parser.nextDouble(0)); position.setAltitude(parser.nextDouble(0)); if (parser.hasNext(8)) { position.setValid(true); position.setLongitude(parser.nextDouble(0)); position.setLatitude(parser.nextDouble(0)); position.setTime(parser.nextDateTime()); } else { getLastLocation(position, null); } if (parser.hasNext(6)) { int mcc = parser.nextInt(0); int mnc = parser.nextInt(0); if (parser.hasNext(2)) { position.setNetwork(new Network(CellTower.from(mcc, mnc, parser.nextInt(0), parser.nextInt(0)))); } if (parser.hasNext(2)) { position.setNetwork(new Network(CellTower.from(mcc, mnc, parser.nextHexInt(0), parser.nextHexInt(0)))); } } position.set(Position.KEY_ODOMETER, parser.nextDouble(0) * 1000); } private Object decodeObd(Channel channel, SocketAddress remoteAddress, String sentence) { Parser parser = new Parser(PATTERN_OBD, sentence); Position position = initPosition(parser, channel, remoteAddress); if (position == null) { return null; } position.set(Position.KEY_RPM, parser.nextInt(0)); position.set(Position.KEY_OBD_SPEED, parser.nextInt(0)); position.set(Position.PREFIX_TEMP + 1, parser.nextInt(0)); position.set(Position.KEY_FUEL_CONSUMPTION, parser.next()); position.set("dtcsClearedDistance", parser.nextInt(0)); position.set("odbConnect", parser.nextInt(0) == 1); position.set("dtcsNumber", parser.nextInt(0)); position.set("dtcsCodes", parser.next()); position.set(Position.KEY_THROTTLE, parser.nextInt(0)); position.set(Position.KEY_FUEL_LEVEL, parser.nextInt(0)); position.set(Position.KEY_OBD_ODOMETER, parser.nextInt(0) * 1000); decodeLocation(position, parser); position.set(Position.KEY_ODOMETER, parser.nextDouble(0) * 1000); decodeDeviceTime(position, parser); return position; } private void decodeStatus(Position position, Parser parser) { if (parser.hasNext(3)) { int ignition = parser.nextHexInt(0); if (BitUtil.check(ignition, 4)) { position.set(Position.KEY_IGNITION, false); } else if (BitUtil.check(ignition, 5)) { position.set(Position.KEY_IGNITION, true); } position.set(Position.KEY_INPUT, parser.nextHexInt(0)); position.set(Position.KEY_OUTPUT, parser.nextHexInt(0)); } } private Object decodeFri(Channel channel, SocketAddress remoteAddress, String sentence) { Parser parser = new Parser(PATTERN_FRI, sentence); if (!parser.matches()) { return null; } DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, parser.next()); if (deviceSession == null) { return null; } LinkedList positions = new LinkedList<>(); String vin = parser.next(); int power = parser.nextInt(0); Parser itemParser = new Parser(PATTERN_LOCATION, parser.next()); while (itemParser.find()) { Position position = new Position(); position.setProtocol(getProtocolName()); position.setDeviceId(deviceSession.getDeviceId()); position.set(Position.KEY_VIN, vin); decodeLocation(position, itemParser); positions.add(position); } Position position = positions.getLast(); decodeLocation(position, parser); // power value only on some devices if (power > 10) { position.set(Position.KEY_POWER, power); } position.set(Position.KEY_ODOMETER, parser.nextDouble(0) * 1000); position.set(Position.KEY_BATTERY, parser.next()); position.set(Position.KEY_ODOMETER, parser.nextDouble(0) * 1000); position.set(Position.KEY_HOURS, parser.next()); position.set(Position.PREFIX_ADC + 1, parser.next()); position.set(Position.PREFIX_ADC + 2, parser.next()); position.set(Position.KEY_BATTERY, parser.next()); decodeStatus(position, parser); position.set(Position.KEY_RPM, parser.nextInt(0)); position.set(Position.KEY_FUEL_LEVEL, parser.nextInt(0)); decodeDeviceTime(position, parser); return positions; } private Object decodeEri(Channel channel, SocketAddress remoteAddress, String sentence) { Parser parser = new Parser(PATTERN_ERI, sentence); if (!parser.matches()) { return null; } DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, parser.next()); if (deviceSession == null) { return null; } LinkedList positions = new LinkedList<>(); int power = parser.nextInt(0); Parser itemParser = new Parser(PATTERN_LOCATION, parser.next()); while (itemParser.find()) { Position position = new Position(); position.setProtocol(getProtocolName()); position.setDeviceId(deviceSession.getDeviceId()); decodeLocation(position, itemParser); positions.add(position); } Position position = positions.getLast(); decodeLocation(position, parser); position.set(Position.KEY_POWER, power); position.set(Position.KEY_ODOMETER, parser.nextDouble(0) * 1000); position.set(Position.KEY_HOURS, parser.next()); position.set(Position.PREFIX_ADC + 1, parser.next()); position.set(Position.PREFIX_ADC + 2, parser.next()); position.set(Position.KEY_BATTERY, parser.next()); decodeStatus(position, parser); decodeDeviceTime(position, parser); return positions; } private Object decodeIgn(Channel channel, SocketAddress remoteAddress, String sentence) { Parser parser = new Parser(PATTERN_IGN, sentence); Position position = initPosition(parser, channel, remoteAddress); if (position == null) { return null; } decodeLocation(position, parser); position.set(Position.KEY_HOURS, parser.next()); position.set(Position.KEY_ODOMETER, parser.nextDouble(0) * 1000); decodeDeviceTime(position, parser); return position; } private Object decodeIda(Channel channel, SocketAddress remoteAddress, String sentence) { Parser parser = new Parser(PATTERN_IDA, sentence); Position position = initPosition(parser, channel, remoteAddress); if (position == null) { return null; } position.set(Position.KEY_RFID, parser.next()); decodeLocation(position, parser); position.set(Position.KEY_ODOMETER, parser.nextDouble(0) * 1000); decodeDeviceTime(position, parser); return position; } private Object decodeWif(Channel channel, SocketAddress remoteAddress, String sentence) { Parser parser = new Parser(PATTERN_WIF, sentence); Position position = initPosition(parser, channel, remoteAddress); if (position == null) { return null; } getLastLocation(position, null); Network network = new Network(); parser.nextInt(0); // count Matcher matcher = Pattern.compile("([0-9a-fA-F]{12}),(-?\\d+),,,,").matcher(parser.next()); while (matcher.find()) { String mac = matcher.group(1).replaceAll("(..)", "$1:"); network.addWifiAccessPoint(WifiAccessPoint.from( mac.substring(0, mac.length() - 1), Integer.parseInt(matcher.group(2)))); } position.setNetwork(network); position.set(Position.KEY_BATTERY, parser.nextInt(0)); return position; } private Object decodeGsm(Channel channel, SocketAddress remoteAddress, String sentence) { Parser parser = new Parser(PATTERN_GSM, sentence); Position position = initPosition(parser, channel, remoteAddress); if (position == null) { return null; } getLastLocation(position, null); Network network = new Network(); String[] data = parser.next().split(","); for (int i = 0; i < 6; i++) { if (!data[i * 6].isEmpty()) { network.addCellTower(CellTower.from( Integer.parseInt(data[i * 6]), Integer.parseInt(data[i * 6 + 1]), Integer.parseInt(data[i * 6 + 2], 16), Integer.parseInt(data[i * 6 + 3], 16), Integer.parseInt(data[i * 6 + 4]))); } } position.setNetwork(network); return position; } private Object decodeOther(Channel channel, SocketAddress remoteAddress, String sentence, String type) { Parser parser = new Parser(PATTERN, sentence); Position position = initPosition(parser, channel, remoteAddress); if (position == null) { return null; } int reportType = parser.nextInt(0); if (type.equals("NMR")) { position.set(Position.KEY_MOTION, reportType); } else if (type.equals("SOS")) { position.set(Position.KEY_ALARM, Position.ALARM_SOS); } decodeLocation(position, parser); position.set(Position.KEY_ODOMETER, parser.nextDouble(0) * 1000); position.set(Position.KEY_BATTERY, parser.next()); position.set(Position.KEY_ODOMETER, parser.nextDouble(0) * 1000); decodeDeviceTime(position, parser); if (Context.getConfig().getBoolean(getProtocolName() + ".ack") && channel != null) { channel.write("+SACK:" + parser.next() + "$", remoteAddress); } return position; } private Object decodeBasic(Channel channel, SocketAddress remoteAddress, String sentence, String type) { Parser parser = new Parser(PATTERN_BASIC, sentence); Position position = initPosition(parser, channel, remoteAddress); if (position == null) { return null; } int hdop = parser.nextInt(0); position.setValid(hdop > 0); position.set(Position.KEY_HDOP, hdop); position.setSpeed(UnitsConverter.knotsFromKph(parser.nextDouble(0))); position.setCourse(parser.nextDouble(0)); position.setAltitude(parser.nextDouble(0)); if (parser.hasNext(2)) { position.setLongitude(parser.nextDouble(0)); position.setLatitude(parser.nextDouble(0)); } else { getLastLocation(position, null); } if (parser.hasNext(6)) { position.setTime(parser.nextDateTime()); } if (parser.hasNext(4)) { position.setNetwork(new Network(CellTower.from( parser.nextInt(0), parser.nextInt(0), parser.nextHexInt(0), parser.nextHexInt(0)))); } decodeDeviceTime(position, parser); switch (type) { case "BPL": position.set(Position.KEY_ALARM, Position.ALARM_LOW_BATTERY); break; case "TEM": position.set(Position.KEY_ALARM, Position.ALARM_TEMPERATURE); break; case "JDR": case "JDS": position.set(Position.KEY_ALARM, Position.ALARM_JAMMING); break; default: break; } return position; } @Override protected Object decode( Channel channel, SocketAddress remoteAddress, Object msg) throws Exception { String sentence = (String) msg; int typeIndex = sentence.indexOf(":GT"); if (typeIndex < 0) { return null; } Object result; String type = sentence.substring(typeIndex + 3, typeIndex + 6); if (sentence.startsWith("+ACK")) { result = decodeAck(channel, remoteAddress, sentence, type); } else { switch (type) { case "INF": result = decodeInf(channel, remoteAddress, sentence); break; case "OBD": result = decodeObd(channel, remoteAddress, sentence); break; case "FRI": result = decodeFri(channel, remoteAddress, sentence); break; case "ERI": result = decodeEri(channel, remoteAddress, sentence); break; case "IGN": case "IGF": result = decodeIgn(channel, remoteAddress, sentence); break; case "IDA": result = decodeIda(channel, remoteAddress, sentence); break; case "WIF": result = decodeWif(channel, remoteAddress, sentence); break; case "GSM": result = decodeGsm(channel, remoteAddress, sentence); break; case "VER": result = decodeVer(channel, remoteAddress, sentence); break; default: result = decodeOther(channel, remoteAddress, sentence, type); break; } if (result == null) { result = decodeBasic(channel, remoteAddress, sentence, type); } if (result != null) { if (result instanceof Position) { ((Position) result).set(Position.KEY_TYPE, type); } else { for (Position p : (List) result) { p.set(Position.KEY_TYPE, type); } } } } return result; } }