/* * Copyright 2013 - 2014 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.Properties; 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.database.DataManager; import org.traccar.helper.Log; import org.traccar.model.ExtendedInfoFormatter; import org.traccar.model.Position; public class MegastekProtocolDecoder extends BaseProtocolDecoder { public MegastekProtocolDecoder(DataManager dataManager, String protocol, Properties properties) { super(dataManager, protocol, properties); } private static final Pattern patternGPRMC = Pattern.compile( "\\$GPRMC," + "(\\d{2})(\\d{2})(\\d{2})\\.\\d+," + // Time (HHMMSS.SSS) "([AV])," + // Validity "(\\d+)(\\d{2}\\.\\d+)," + // Latitude (DDMM.MMMM) "([NS])," + "(\\d+)(\\d{2}\\.\\d+)," + // Longitude (DDDMM.MMMM) "([EW])," + "(\\d+\\.\\d+)?," + // Speed "(\\d+\\.\\d+)?," + // Course "(\\d{2})(\\d{2})(\\d{2})" + // Date (DDMMYY) "[^\\*]+\\*[0-9a-fA-F]{2}"); // Checksum //F,,imei:123456789012345,0/6,,Battery=100%,,0,,,5856,78A3;24 private static final Pattern patternSimple = Pattern.compile( "[FL]," + // Flag "([^,]*)," + // Alarm "imei:(\\d+)," + // IMEI "(\\d+/?\\d*)?," + // Satellites "(\\d+\\.\\d+)?," + // Altitude "Battery=(\\d+)%,," + // Battery "(\\d)?," + // Charger "(\\d+)?," + // MCC "(\\d+)?," + // MNC "(\\p{XDigit}{4},\\p{XDigit}{4});" + // Location code ".+"); // Checksum private static final Pattern patternAlternative = Pattern.compile( "(\\d+)," + // MCC "(\\d+)," + // MNC "(\\p{XDigit}{4},\\p{XDigit}{4})," + // Location code "(\\d+)," + // GSM signal "(\\d+)," + // Battery "(\\d+)," + // Flags "(\\d+)," + // Inputs "(?:(\\d+),)?" + // Outputs "(\\d\\.?\\d*)," + // ADC 1 "(?:(\\d\\.\\d{2})," + // ADC 2 "(\\d\\.\\d{2}),)?" + // ADC 3 "([^;]+);" + // Alarm ".*"); // Checksum private boolean parseGPRMC(String gprmc, Position position) { // Parse message Matcher parser = patternGPRMC.matcher(gprmc); if (!parser.matches()) { return false; } int index = 1; // Time Calendar time = Calendar.getInstance(TimeZone.getTimeZone("UTC")); time.clear(); time.set(Calendar.HOUR_OF_DAY, Integer.valueOf(parser.group(index++))); time.set(Calendar.MINUTE, Integer.valueOf(parser.group(index++))); time.set(Calendar.SECOND, Integer.valueOf(parser.group(index++))); // Validity position.setValid(parser.group(index++).compareTo("A") == 0); // Latitude Double latitude = Double.valueOf(parser.group(index++)); latitude += Double.valueOf(parser.group(index++)) / 60; if (parser.group(index++).compareTo("S") == 0) latitude = -latitude; position.setLatitude(latitude); // Longitude Double longitude = Double.valueOf(parser.group(index++)); longitude += Double.valueOf(parser.group(index++)) / 60; if (parser.group(index++).compareTo("W") == 0) longitude = -longitude; position.setLongitude(longitude); // Speed String speed = parser.group(index++); if (speed != null) { position.setSpeed(Double.valueOf(speed)); } else { position.setSpeed(0.0); } // Course String course = parser.group(index++); if (course != null) { position.setCourse(Double.valueOf(course)); } else { position.setCourse(0.0); } // Date time.set(Calendar.DAY_OF_MONTH, Integer.valueOf(parser.group(index++))); time.set(Calendar.MONTH, Integer.valueOf(parser.group(index++)) - 1); time.set(Calendar.YEAR, 2000 + Integer.valueOf(parser.group(index++))); position.setTime(time.getTime()); return true; } @Override protected Object decode( ChannelHandlerContext ctx, Channel channel, Object msg) throws Exception { String sentence = (String) msg; // Detect type boolean simple = (sentence.charAt(3) == ',' || sentence.charAt(6) == ','); // Split message String id; String gprmc; String status; if (simple) { int beginIndex = sentence.indexOf(',') + 1; int endIndex = sentence.indexOf(',', beginIndex); id = sentence.substring(beginIndex, endIndex); beginIndex = endIndex + 1; endIndex = sentence.indexOf('*', beginIndex) + 3; gprmc = sentence.substring(beginIndex, endIndex); beginIndex = endIndex + 1; status = sentence.substring(beginIndex); } else { int beginIndex = 3; int endIndex = beginIndex + 16; id = sentence.substring(beginIndex, endIndex).trim(); beginIndex = endIndex + 2; endIndex = sentence.indexOf('*', beginIndex) + 3; gprmc = sentence.substring(beginIndex, endIndex); beginIndex = endIndex + 1; status = sentence.substring(beginIndex); } // Create new position Position position = new Position(); ExtendedInfoFormatter extendedInfo = new ExtendedInfoFormatter(getProtocol()); // Parse location data if (!parseGPRMC(gprmc, position)) { return null; } if (simple) { // Parse status Matcher parser = patternSimple.matcher(status); if (!parser.matches()) { return null; } int index = 1; // Alarm extendedInfo.set("alarm", parser.group(index++)); // IMEI String imei = parser.group(index++); try { position.setDeviceId(getDataManager().getDeviceByImei(imei).getId()); } catch(Exception firstError) { try { position.setDeviceId(getDataManager().getDeviceByImei(id).getId()); } catch(Exception secondError) { Log.warning("Unknown device - " + imei + " (id - " + id + ")"); return null; } } // Satellites extendedInfo.set("satellites", parser.group(index++)); // Altitude String altitude = parser.group(index++); if (altitude != null) { position.setAltitude(Double.valueOf(altitude)); } else { position.setAltitude(0.0); } // Battery extendedInfo.set("power", Double.valueOf(parser.group(index++))); // Charger String charger = parser.group(index++); if (charger != null) { extendedInfo.set("charger", Integer.valueOf(charger) == 1); } extendedInfo.set("mcc", parser.group(index++)); extendedInfo.set("mnc", parser.group(index++)); extendedInfo.set("lac", parser.group(index++)); } else { // Parse status Matcher parser = patternAlternative.matcher(status); if (!parser.matches()) { return null; } int index = 1; // Altitude position.setAltitude(0.0); try { position.setDeviceId(getDataManager().getDeviceByImei(id).getId()); } catch(Exception error) { Log.warning("Unknown device - " + id); return null; } extendedInfo.set("mcc", parser.group(index++)); extendedInfo.set("mnc", parser.group(index++)); extendedInfo.set("lac", parser.group(index++)); extendedInfo.set("gsm", parser.group(index++)); // Battery extendedInfo.set("battery", Double.valueOf(parser.group(index++))); extendedInfo.set("flags", parser.group(index++)); extendedInfo.set("input", parser.group(index++)); extendedInfo.set("output", parser.group(index++)); extendedInfo.set("adc1", parser.group(index++)); extendedInfo.set("adc2", parser.group(index++)); extendedInfo.set("adc3", parser.group(index++)); extendedInfo.set("alarm", parser.group(index++)); } position.setExtendedInfo(extendedInfo.toString()); return position; } }