/* * Copyright 2012 - 2016 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.DateBuilder; import org.traccar.helper.Parser; import org.traccar.helper.PatternBuilder; import org.traccar.model.Position; import org.traccar.helper.UnitsConverter; import java.net.SocketAddress; import java.util.regex.Pattern; public class XexunProtocolDecoder extends BaseProtocolDecoder { private final boolean full; public XexunProtocolDecoder(XexunProtocol protocol, boolean full) { super(protocol); this.full = full; } private static final Pattern PATTERN_BASIC = new PatternBuilder() .expression("G[PN]RMC,") .number("(?:(dd)(dd)(dd))?.?d*,") // time (hhmmss) .expression("([AV]),") // validity .number("(d*?)(d?d.d+),([NS]),") // latitude .number("(d*?)(d?d.d+),([EW])?,") // longitude .number("(d+.?d*),") // speed .number("(d+.?d*)?,") // course .number("(?:(dd)(dd)(dd))?,") // date (ddmmyy) .expression("[^*]*").text("*") .number("xx") // checksum .expression("\\r\\n").optional() .expression(",([FL]),") // signal .expression("([^,]*),").optional() // alarm .any() .number("imei:(d+),") // imei .compile(); private static final Pattern PATTERN_FULL = new PatternBuilder() .any() .number("(d+),") // serial .expression("([^,]+)?,") // phone number .expression(PATTERN_BASIC.pattern()) .number("(d+),") // satellites .number("(-?d+.d+)?,") // altitude .number("[FL]:(d+.d+)V") // power .any() .compile(); private String decodeAlarm(String value) { if (value != null) { switch (value) { case "help me!": return Position.ALARM_SOS; case "low battery": return Position.ALARM_LOW_BATTERY; case "move!": case "moved!": return Position.ALARM_MOVEMENT; default: break; } } return null; } @Override protected Object decode( Channel channel, SocketAddress remoteAddress, Object msg) throws Exception { Pattern pattern = PATTERN_BASIC; if (full) { pattern = PATTERN_FULL; } Parser parser = new Parser(pattern, (String) msg); if (!parser.matches()) { return null; } Position position = new Position(); position.setProtocol(getProtocolName()); if (full) { position.set("serial", parser.next()); position.set("number", parser.next()); } DateBuilder dateBuilder = new DateBuilder() .setTime(parser.nextInt(0), parser.nextInt(0), parser.nextInt(0)); position.setValid(parser.next().equals("A")); position.setLatitude(parser.nextCoordinate()); position.setLongitude(parser.nextCoordinate()); switch (Context.getConfig().getString(getProtocolName() + ".speed", "kn")) { case "kmh": position.setSpeed(UnitsConverter.knotsFromKph(parser.nextDouble(0))); break; default: position.setSpeed(parser.nextDouble(0)); break; } position.setCourse(parser.nextDouble(0)); dateBuilder.setDateReverse(parser.nextInt(0), parser.nextInt(0), parser.nextInt(0)); position.setTime(dateBuilder.getDate()); position.set("signal", parser.next()); position.set(Position.KEY_ALARM, decodeAlarm(parser.next())); DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, parser.next()); if (deviceSession == null) { return null; } position.setDeviceId(deviceSession.getDeviceId()); if (full) { position.set(Position.KEY_SATELLITES, parser.next().replaceFirst("^0*(?![\\.$])", "")); position.setAltitude(parser.nextDouble(0)); position.set(Position.KEY_POWER, parser.nextDouble(0)); } return position; } }