/* * Copyright 2012 Anton Tananaev (anton.tananaev@gmail.com) * * 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 java.util.Calendar; import java.util.TimeZone; import java.util.regex.Matcher; import java.util.regex.Pattern; import org.jboss.netty.channel.Channel; import org.jboss.netty.channel.ChannelHandlerContext; import org.traccar.BaseProtocolDecoder; import org.traccar.ServerManager; import org.traccar.helper.Log; import org.traccar.model.Position; /** * TR20 tracker protocol decoder */ public class Tr20ProtocolDecoder extends BaseProtocolDecoder { /** * Initialize */ public Tr20ProtocolDecoder(ServerManager serverManager) { super(serverManager); } static private Pattern patternPing = Pattern.compile( "\\%\\%[^,]+,(\\d+)"); //%%TR-10,A,050916070549,N2240.8887E11359.2994,0,000,NA,D3800000,150,CFG:resend| //%%123456789012345,A,120101121800,N6000.0000E13000.0000,0,000,0,01034802,150,[Message] static private Pattern patternData = Pattern.compile( "\\%\\%" + "([^,]+)," + // Id "([AL])," + // Validity "(\\d{2})(\\d{2})(\\d{2})" + // Date (YYMMDD) "(\\d{2})(\\d{2})(\\d{2})," + // Time (HHMMSS) "([NS])" + "(\\d{2})(\\d{2}\\.\\d+)" + // Latitude (DDMM.MMMM) "([EW])" + "(\\d{3})(\\d{2}\\.\\d+)," + // Longitude (DDDMM.MMMM) "(\\d+)," + // Speed "(\\d+)," + // Course ".*"); /** * Decode message */ protected Object decode( ChannelHandlerContext ctx, Channel channel, Object msg) throws Exception { String sentence = (String) msg; // Keep alive message Matcher parser = patternPing.matcher(sentence); if (parser.matches()) { // Send response if (channel != null) { channel.write("&&" + parser.group(1) + "\r\n"); } } else { // Data message parse parser = patternData.matcher(sentence); // Unknown message if (!parser.matches()) { return null; } // Create new position Position position = new Position(); StringBuilder extendedInfo = new StringBuilder("<protocol>tr20</protocol>"); Integer index = 1; // Get device by id String id = parser.group(index++); try { position.setDeviceId(getDataManager().getDeviceByImei(id).getId()); } catch(Exception error) { Log.warning("Unknown device - " + id); return null; } // Validity position.setValid(parser.group(index++).compareTo("A") == 0 ? true : false); // Time Calendar time = Calendar.getInstance(TimeZone.getTimeZone("UTC")); time.clear(); time.set(Calendar.YEAR, 2000 + Integer.parseInt(parser.group(index++))); time.set(Calendar.MONTH, Integer.parseInt(parser.group(index++)) - 1); time.set(Calendar.DAY_OF_MONTH, Integer.parseInt(parser.group(index++))); time.set(Calendar.HOUR, Integer.parseInt(parser.group(index++))); time.set(Calendar.MINUTE, Integer.parseInt(parser.group(index++))); time.set(Calendar.SECOND, Integer.parseInt(parser.group(index++))); position.setTime(time.getTime()); // Latitude int hemisphere = 1; if (parser.group(index++).compareTo("S") == 0) hemisphere = -1; Double latitude = Double.valueOf(parser.group(index++)); latitude += Double.valueOf(parser.group(index++)) / 60; position.setLatitude(latitude * hemisphere); // Longitude hemisphere = 1; if (parser.group(index++).compareTo("W") == 0) hemisphere = -1; Double lonlitude = Double.valueOf(parser.group(index++)); lonlitude += Double.valueOf(parser.group(index++)) / 60; position.setLongitude(lonlitude * hemisphere); // Speed position.setSpeed(Double.valueOf(parser.group(index++))); // Course position.setCourse(Double.valueOf(parser.group(index++))); // Altitude position.setAltitude(0.0); // Extended info position.setExtendedInfo(extendedInfo.toString()); return position; } return null; } }