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/*
* Copyright 2013 - 2015 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.net.SocketAddress;
import java.util.regex.Pattern;
import org.jboss.netty.channel.Channel;
import org.traccar.BaseProtocolDecoder;
import org.traccar.helper.DateBuilder;
import org.traccar.helper.Parser;
import org.traccar.helper.PatternBuilder;
import org.traccar.model.Event;
import org.traccar.model.Position;
public class MegastekProtocolDecoder extends BaseProtocolDecoder {
public MegastekProtocolDecoder(MegastekProtocol protocol) {
super(protocol);
}
private static final Pattern PATTERN_GPRMC = new PatternBuilder()
.text("$GPRMC,")
.number("(dd)(dd)(dd).d+,") // time
.expression("([AV]),") // validity
.number("(d+)(dd.d+),([NS]),") // latitude
.number("(d+)(dd.d+),([EW]),") // longitude
.number("(d+.d+)?,") // speed
.number("(d+.d+)?,") // course
.number("(dd)(dd)(dd)") // date (ddmmyy)
.any() // checksum
.compile();
private static final Pattern PATTERN_SIMPLE = new PatternBuilder()
.expression("[FL],") // flag
.expression("([^,]*),") // alarm
.number("imei:(d+),") // imei
.number("(d+/?d*)?,") // satellites
.number("(d+.d+)?,") // altitude
.number("Battery=(d+)%,,") // battery
.number("(d)?,") // charger
.number("(d+)?,") // mcc
.number("(d+)?,") // mnc
.number("(xxxx,xxxx);") // location code
.any() // checksum
.compile();
private static final Pattern PATTERN_ALTERNATIVE = new PatternBuilder()
.number("(d+),") // mcc
.number("(d+),") // mnc
.number("(xxxx,xxxx),") // location code
.number("(d+),") // gsm signal
.number("(d+),") // battery
.number("(d+),") // flags
.number("(d+),") // inputs
.number("(?:(d+),)?") // outputs
.number("(d.?d*),") // adc 1
.groupBegin()
.number("(d.dd),") // adc 2
.number("(d.dd),") // adc 3
.groupEnd("?")
.expression("([^;]+);") // alarm
.any() // checksum
.compile();
private boolean parseLocation(String location, Position position) {
Parser parser = new Parser(PATTERN_GPRMC, location);
if (!parser.matches()) {
return false;
}
DateBuilder dateBuilder = new DateBuilder()
.setTime(parser.nextInt(), parser.nextInt(), parser.nextInt());
position.setValid(parser.next().equals("A"));
position.setLatitude(parser.nextCoordinate());
position.setLongitude(parser.nextCoordinate());
position.setSpeed(parser.nextDouble());
position.setCourse(parser.nextDouble());
dateBuilder.setDateReverse(parser.nextInt(), parser.nextInt(), parser.nextInt());
position.setTime(dateBuilder.getDate());
return true;
}
private Position decodeOld(Channel channel, String sentence) {
// Detect type
boolean simple = sentence.charAt(3) == ',' || sentence.charAt(6) == ',';
// Split message
String id;
String location;
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);
if (endIndex != -1) {
endIndex += 3;
} else {
endIndex = sentence.length();
}
location = sentence.substring(beginIndex, endIndex);
beginIndex = endIndex + 1;
if (beginIndex > sentence.length()) {
beginIndex = endIndex;
}
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;
location = sentence.substring(beginIndex, endIndex);
beginIndex = endIndex + 1;
status = sentence.substring(beginIndex);
}
Position position = new Position();
position.setProtocol(getProtocolName());
if (!parseLocation(location, position)) {
return null;
}
if (simple) {
Parser parser = new Parser(PATTERN_SIMPLE, status);
if (parser.matches()) {
position.set(Event.KEY_ALARM, parser.next());
if (!identify(parser.next(), channel, null, false) && !identify(id, channel)) {
return null;
}
position.setDeviceId(getDeviceId());
position.set(Event.KEY_SATELLITES, parser.next());
position.setAltitude(parser.nextDouble());
position.set(Event.KEY_POWER, parser.nextDouble());
String charger = parser.next();
if (charger != null) {
position.set(Event.KEY_CHARGE, Integer.parseInt(charger) == 1);
}
position.set(Event.KEY_MCC, parser.next());
position.set(Event.KEY_MNC, parser.next());
position.set(Event.KEY_LAC, parser.next());
} else {
if (!identify(id, channel)) {
return null;
}
position.setDeviceId(getDeviceId());
}
} else {
Parser parser = new Parser(PATTERN_ALTERNATIVE, status);
if (parser.matches()) {
if (!identify(id, channel)) {
return null;
}
position.setDeviceId(getDeviceId());
position.set(Event.KEY_MCC, parser.next());
position.set(Event.KEY_MNC, parser.next());
position.set(Event.KEY_LAC, parser.next());
position.set(Event.KEY_GSM, parser.next());
position.set(Event.KEY_BATTERY, Double.parseDouble(parser.next()));
position.set(Event.KEY_FLAGS, parser.next());
position.set(Event.KEY_INPUT, parser.next());
position.set(Event.KEY_OUTPUT, parser.next());
position.set(Event.PREFIX_ADC + 1, parser.next());
position.set(Event.PREFIX_ADC + 2, parser.next());
position.set(Event.PREFIX_ADC + 3, parser.next());
position.set(Event.KEY_ALARM, parser.next());
}
}
return position;
}
private static final Pattern PATTERN_NEW = new PatternBuilder()
.text("$MGV")
.number("ddd,")
.number("(d+),") // imei
.expression("[^,]*,") // name
.expression("([RS]),")
.number("(dd)(dd)(dd),") // date (ddmmyy)
.number("(dd)(dd)(dd),") // time
.expression("([AV]),") // validity
.number("(d+)(dd.d+),([NS]),") // latitude
.number("(d+)(dd.d+),([EW]),") // longitude
.number("dd,")
.number("(dd),") // satellites
.number("dd,")
.number("(d+.d+),") // hdop
.number("(d+.d+),") // speed
.number("(d+.d+),") // course
.number("(d+.d+),") // altitude
.number("(d+.d+),") // odometer
.number("(d+),") // mcc
.number("(d+),") // mnc
.number("(xxxx,xxxx),") // cell
.number("(d+)?,") // gsm
.expression("([01]+),") // input
.expression("([01]+),") // output
.number("(d+),") // adc1
.number("(d+),") // adc2
.number("(d+),") // adc3
.groupBegin()
.number("(-?d+.?d*)") // temperature 1
.or().text(" ")
.groupEnd().text(",")
.groupBegin()
.number("(-?d+.?d*)") // temperature 2
.or().text(" ")
.groupEnd().text(",")
.number("(d+)?,,") // rfid
.number("(d+)?,") // battery
.expression("([^,]*);") // alert
.any()
.compile();
private Position decodeNew(Channel channel, String sentence) {
Parser parser = new Parser(PATTERN_NEW, sentence);
if (!parser.matches()) {
return null;
}
Position position = new Position();
position.setProtocol(getProtocolName());
if (!identify(parser.next(), channel)) {
return null;
}
position.setDeviceId(getDeviceId());
if (parser.next().equals("S")) {
position.set(Event.KEY_ARCHIVE, true);
}
DateBuilder dateBuilder = new DateBuilder()
.setDateReverse(parser.nextInt(), parser.nextInt(), parser.nextInt())
.setTime(parser.nextInt(), parser.nextInt(), parser.nextInt());
position.setTime(dateBuilder.getDate());
position.setValid(parser.next().equals("A"));
position.setLatitude(parser.nextCoordinate());
position.setLongitude(parser.nextCoordinate());
position.set(Event.KEY_SATELLITES, parser.nextInt());
position.set(Event.KEY_HDOP, parser.nextDouble());
position.setSpeed(parser.nextDouble());
position.setCourse(parser.nextDouble());
position.setAltitude(parser.nextDouble());
position.set(Event.KEY_ODOMETER, parser.nextDouble());
position.set(Event.KEY_MCC, parser.nextInt());
position.set(Event.KEY_MNC, parser.nextInt());
position.set(Event.KEY_CID, parser.next());
String gsm = parser.next();
if (gsm != null) {
position.set(Event.KEY_GSM, Integer.parseInt(gsm));
}
position.set(Event.KEY_INPUT, parser.nextInt(2));
position.set(Event.KEY_OUTPUT, parser.nextInt(2));
for (int i = 1; i <= 3; i++) {
position.set(Event.PREFIX_ADC + i, parser.nextInt());
}
for (int i = 1; i <= 2; i++) {
String adc = parser.next();
if (adc != null) {
position.set(Event.PREFIX_TEMP + i, Double.parseDouble(adc));
}
}
position.set(Event.KEY_RFID, parser.next());
String battery = parser.next();
if (battery != null) {
position.set(Event.KEY_BATTERY, Integer.parseInt(battery));
}
position.set(Event.KEY_ALARM, parser.next());
return position;
}
@Override
protected Object decode(
Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
String sentence = (String) msg;
if (sentence.startsWith("$MG")) {
return decodeNew(channel, sentence);
} else {
return decodeOld(channel, sentence);
}
}
}
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