/*
* Copyright 2012 - 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 T55ProtocolDecoder extends BaseProtocolDecoder {
private Long deviceId;
public T55ProtocolDecoder(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{2})(\\d{2}\\.\\d+)," + // Latitude (DDMM.MMMM)
"([NS])," +
"(\\d{3})(\\d{2}\\.\\d+)," + // Longitude (DDDMM.MMMM)
"([EW])," +
"(\\d+\\.?\\d*)?," + // Speed
"(\\d+\\.?\\d*)?," + // Course
"(\\d{2})(\\d{2})(\\d{2})" + // Date (DDMMYY)
".+");
private static final Pattern patternGPGGA = Pattern.compile(
"\\$GPGGA," +
"(\\d{2})(\\d{2})(\\d{2})\\.?\\d*," + // Time
"(\\d{2})(\\d{2}\\.\\d+)," + // Latitude
"([NS])," +
"(\\d{3})(\\d{2}\\.\\d+)," + // Longitude
"([EW])," +
".+");
private static final Pattern patternGPRMA = Pattern.compile(
"\\$GPRMA," +
"([AV])," + // Validity
"(\\d{2})(\\d{2}\\.\\d+)," + // Latitude
"([NS])," +
"(\\d{3})(\\d{2}\\.\\d+)," + // Longitude
"([EW]),,," +
"(\\d+\\.?\\d*)?," + // Speed
"(\\d+\\.?\\d*)?," + // Course
".+");
private static final Pattern patternTRCCR = Pattern.compile(
"\\$TRCCR," +
"(\\d{4})(\\d{2})(\\d{2})" + // Date (YYYYMMDD)
"(\\d{2})(\\d{2})(\\d{2})\\.?\\d*," + // Time (HHMMSS.SSS)
"([AV])," + // Validity
"(-?\\d+\\.\\d+)," + // Latitude
"(-?\\d+\\.\\d+)," + // Longitude
"(\\d+\\.\\d+)," + // Speed
"(\\d+\\.\\d+)," + // Course
"(-?\\d+\\.\\d+)," + // Altitude
"(\\d+\\.?\\d*)," + // Battery
".+");
private void identify(String id) {
try {
deviceId = getDataManager().getDeviceByImei(id).getId();
} catch(Exception error) {
Log.warning("Unknown device - " + id);
}
}
@Override
protected Object decode(
ChannelHandlerContext ctx, Channel channel, Object msg)
throws Exception {
String sentence = (String) msg;
if (!sentence.startsWith("$") && sentence.contains("$")) {
int index = sentence.indexOf("$");
identify(sentence.substring(0, index));
sentence = sentence.substring(index);
}
// Identification
if (sentence.startsWith("$PGID")) {
identify(sentence.substring(6, sentence.length() - 3));
}
// Identification
else if (sentence.startsWith("$PCPTI")) {
identify(sentence.substring(7, sentence.indexOf(",", 7)));
}
// Identification
else if (sentence.startsWith("IMEI")) {
identify(sentence.substring(5, sentence.length()));
}
// Identification
else if (sentence.startsWith("$GPFID")) {
identify(sentence.substring(6, sentence.length()));
}
// Identification
else if (Character.isDigit(sentence.charAt(0)) & sentence.length() == 15) {
identify(sentence);
}
// Location
else if (sentence.startsWith("$GPRMC") && deviceId != null) {
// Send response
if (channel != null) {
channel.write("OK1\r\n");
}
// Parse message
Matcher parser = patternGPRMC.matcher(sentence);
if (!parser.matches()) {
return null;
}
// Create new position
Position position = new Position();
ExtendedInfoFormatter extendedInfo = new ExtendedInfoFormatter(getProtocol());
position.setDeviceId(deviceId);
Integer index = 1;
// Time
Calendar time = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
time.clear();
time.set(Calendar.HOUR_OF_DAY, Integer.valueOf(parser.group(index++)));
time.set(Calendar.MINUTE, Integer.valueOf(parser.group(index++)));
time.set(Calendar.SECOND, Integer.valueOf(parser.group(index++)));
// Validity
position.setValid(parser.group(index++).compareTo("A") == 0);
// Latitude
Double latitude = Double.valueOf(parser.group(index++));
latitude += Double.valueOf(parser.group(index++)) / 60;
if (parser.group(index++).compareTo("S") == 0) latitude = -latitude;
position.setLatitude(latitude);
// Longitude
Double longitude = Double.valueOf(parser.group(index++));
longitude += Double.valueOf(parser.group(index++)) / 60;
if (parser.group(index++).compareTo("W") == 0) longitude = -longitude;
position.setLongitude(longitude);
// Speed
String speed = parser.group(index++);
if (speed != null) {
position.setSpeed(Double.valueOf(speed));
} else {
position.setSpeed(0.0);
}
// Course
String course = parser.group(index++);
if (course != null) {
position.setCourse(Double.valueOf(course));
} else {
position.setCourse(0.0);
}
// Date
time.set(Calendar.DAY_OF_MONTH, Integer.valueOf(parser.group(index++)));
time.set(Calendar.MONTH, Integer.valueOf(parser.group(index++)) - 1);
time.set(Calendar.YEAR, 2000 + Integer.valueOf(parser.group(index++)));
position.setTime(time.getTime());
// Altitude
position.setAltitude(0.0);
position.setExtendedInfo(extendedInfo.toString());
return position;
}
// Location
else if (sentence.startsWith("$GPGGA") && deviceId != null) {
// Parse message
Matcher parser = patternGPGGA.matcher(sentence);
if (!parser.matches()) {
return null;
}
// Create new position
Position position = new Position();
ExtendedInfoFormatter extendedInfo = new ExtendedInfoFormatter(getProtocol());
position.setDeviceId(deviceId);
Integer index = 1;
// Time
Calendar time = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
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++)));
time.set(Calendar.MILLISECOND, 0);
position.setTime(time.getTime());
// Validity
position.setValid(true);
// 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
position.setSpeed(0.0);
// Course
position.setCourse(0.0);
// Altitude
position.setAltitude(0.0);
position.setExtendedInfo(extendedInfo.toString());
return position;
}
// Location
else if (sentence.startsWith("$GPRMA") && deviceId != null) {
// Parse message
Matcher parser = patternGPRMA.matcher(sentence);
if (!parser.matches()) {
return null;
}
// Create new position
Position position = new Position();
ExtendedInfoFormatter extendedInfo = new ExtendedInfoFormatter(getProtocol());
position.setDeviceId(deviceId);
Integer index = 1;
// Time
position.setTime(Calendar.getInstance(TimeZone.getTimeZone("UTC")).getTime());
// Validity
position.setValid(parser.group(index++).compareTo("A") == 0);
// Latitude
Double latitude = Double.valueOf(parser.group(index++));
latitude += Double.valueOf(parser.group(index++)) / 60;
if (parser.group(index++).compareTo("S") == 0) latitude = -latitude;
position.setLatitude(latitude);
// Longitude
Double longitude = Double.valueOf(parser.group(index++));
longitude += Double.valueOf(parser.group(index++)) / 60;
if (parser.group(index++).compareTo("W") == 0) longitude = -longitude;
position.setLongitude(longitude);
// Speed
String speed = parser.group(index++);
if (speed != null) {
position.setSpeed(Double.valueOf(speed));
} else {
position.setSpeed(0.0);
}
// Course
String course = parser.group(index++);
if (course != null) {
position.setCourse(Double.valueOf(course));
} else {
position.setCourse(0.0);
}
// Altitude
position.setAltitude(0.0);
position.setExtendedInfo(extendedInfo.toString());
return position;
}
// Location
else if (sentence.startsWith("$TRCCR") && deviceId != null) {
// Parse message
Matcher parser = patternTRCCR.matcher(sentence);
if (!parser.matches()) {
return null;
}
// Create new position
Position position = new Position();
ExtendedInfoFormatter extendedInfo = new ExtendedInfoFormatter(getProtocol());
position.setDeviceId(deviceId);
Integer index = 1;
// Time
Calendar time = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
time.clear();
time.set(Calendar.YEAR, Integer.valueOf(parser.group(index++)));
time.set(Calendar.MONTH, Integer.valueOf(parser.group(index++)) - 1);
time.set(Calendar.DAY_OF_MONTH, Integer.valueOf(parser.group(index++)));
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++)));
position.setTime(time.getTime());
// Validity
position.setValid(parser.group(index++).compareTo("A") == 0);
// Location
position.setLatitude(Double.valueOf(parser.group(index++)));
position.setLongitude(Double.valueOf(parser.group(index++)));
position.setSpeed(Double.valueOf(parser.group(index++)));
position.setCourse(Double.valueOf(parser.group(index++)));
position.setAltitude(Double.valueOf(parser.group(index++)));
// Battery
extendedInfo.set("battery", parser.group(index++));
position.setExtendedInfo(extendedInfo.toString());
return position;
}
return null;
}
}