/* * Copyright 2013 - 2014 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.helper.UnitsConverter; import org.traccar.model.Position; import java.net.SocketAddress; import java.util.regex.Pattern; public class GlobalSatProtocolDecoder extends BaseProtocolDecoder { private String format0; private String format1; public GlobalSatProtocolDecoder(GlobalSatProtocol protocol) { super(protocol); format0 = Context.getConfig().getString(getProtocolName() + ".format0", "TSPRXAB27GHKLMnaicz*U!"); format1 = Context.getConfig().getString(getProtocolName() + ".format1", "SARY*U!"); } public void setFormat0(String format) { format0 = format; } public void setFormat1(String format) { format1 = format; } private Position decodeOriginal(Channel channel, SocketAddress remoteAddress, String sentence) { if (channel != null) { channel.write("ACK\r"); } String format; if (sentence.startsWith("GSr")) { format = format0; } else if (sentence.startsWith("GSh")) { format = format1; } else { return null; } // Check that message contains required parameters if (!format.contains("B") || !format.contains("S") || !(format.contains("1") || format.contains("2") || format.contains("3")) || !(format.contains("6") || format.contains("7") || format.contains("8"))) { return null; } if (format.contains("*")) { format = format.substring(0, format.indexOf('*')); sentence = sentence.substring(0, sentence.indexOf('*')); } String[] values = sentence.split(","); Position position = new Position(); position.setProtocol(getProtocolName()); for (int formatIndex = 0, valueIndex = 1; formatIndex < format.length() && valueIndex < values.length; formatIndex++) { String value = values[valueIndex]; switch (format.charAt(formatIndex)) { case 'S': DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, value); if (deviceSession == null) { return null; } position.setDeviceId(deviceSession.getDeviceId()); break; case 'A': if (value.isEmpty()) { position.setValid(false); } else { position.setValid(Integer.parseInt(value) != 1); } break; case 'B': DateBuilder dateBuilder = new DateBuilder() .setDay(Integer.parseInt(value.substring(0, 2))) .setMonth(Integer.parseInt(value.substring(2, 4))) .setYear(Integer.parseInt(value.substring(4))); value = values[++valueIndex]; dateBuilder .setHour(Integer.parseInt(value.substring(0, 2))) .setMinute(Integer.parseInt(value.substring(2, 4))) .setSecond(Integer.parseInt(value.substring(4))); position.setTime(dateBuilder.getDate()); break; case 'C': valueIndex += 1; break; case '1': double longitude = Double.parseDouble(value.substring(1)); if (value.charAt(0) == 'W') { longitude = -longitude; } position.setLongitude(longitude); break; case '2': longitude = Double.parseDouble(value.substring(4)) / 60; longitude += Integer.parseInt(value.substring(1, 4)); if (value.charAt(0) == 'W') { longitude = -longitude; } position.setLongitude(longitude); break; case '3': position.setLongitude(Double.parseDouble(value) * 0.000001); break; case '6': double latitude = Double.parseDouble(value.substring(1)); if (value.charAt(0) == 'S') { latitude = -latitude; } position.setLatitude(latitude); break; case '7': latitude = Double.parseDouble(value.substring(3)) / 60; latitude += Integer.parseInt(value.substring(1, 3)); if (value.charAt(0) == 'S') { latitude = -latitude; } position.setLatitude(latitude); break; case '8': position.setLatitude(Double.parseDouble(value) * 0.000001); break; case 'G': position.setAltitude(Double.parseDouble(value)); break; case 'H': position.setSpeed(Double.parseDouble(value)); break; case 'I': position.setSpeed(UnitsConverter.knotsFromKph(Double.parseDouble(value))); break; case 'J': position.setSpeed(UnitsConverter.knotsFromMph(Double.parseDouble(value))); break; case 'K': position.setCourse(Double.parseDouble(value)); break; case 'N': if (value.endsWith("mV")) { position.set(Position.KEY_BATTERY, Integer.parseInt(value.substring(0, value.length() - 2)) / 1000.0); } else { position.set(Position.KEY_BATTERY_LEVEL, Integer.parseInt(value)); } break; default: // Unsupported break; } valueIndex += 1; } return position; } private static final Pattern PATTERN = new PatternBuilder() .text("$") .number("(d+),") // imei .number("d+,") // mode .number("(d+),") // fix .number("(dd)(dd)(dd),") // date (ddmmyy) .number("(dd)(dd)(dd),") // time (hhmmss) .expression("([EW])") .number("(ddd)(dd.d+),") // longitude (dddmm.mmmm) .expression("([NS])") .number("(dd)(dd.d+),") // latitude (ddmm.mmmm) .number("(d+.?d*),") // altitude .number("(d+.?d*),") // speed .number("(d+.?d*)?,") // course .number("(d+)[,*]") // satellites .number("(d+.?d*)") // hdop .compile(); private Position decodeAlternative(Channel channel, SocketAddress remoteAddress, String sentence) { Parser parser = new Parser(PATTERN, sentence); if (!parser.matches()) { return null; } Position position = new Position(); position.setProtocol(getProtocolName()); DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, parser.next()); if (deviceSession == null) { return null; } position.setDeviceId(deviceSession.getDeviceId()); position.setValid(!parser.next().equals("1")); position.setTime(parser.nextDateTime(Parser.DateTimeFormat.DMY_HMS)); position.setLongitude(parser.nextCoordinate(Parser.CoordinateFormat.HEM_DEG_MIN)); position.setLatitude(parser.nextCoordinate(Parser.CoordinateFormat.HEM_DEG_MIN)); position.setAltitude(parser.nextDouble(0)); position.setSpeed(parser.nextDouble(0)); position.setCourse(parser.nextDouble(0)); position.set(Position.KEY_SATELLITES, parser.nextInt(0)); position.set(Position.KEY_HDOP, parser.next()); return position; } @Override protected Object decode( Channel channel, SocketAddress remoteAddress, Object msg) throws Exception { String sentence = (String) msg; if (sentence.startsWith("GS")) { return decodeOriginal(channel, remoteAddress, sentence); } else if (sentence.startsWith("$")) { return decodeAlternative(channel, remoteAddress, sentence); } return null; } }