/*
* Copyright 2013 - 2016 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.DeviceSession;
import org.traccar.helper.DateBuilder;
import org.traccar.helper.Parser;
import org.traccar.helper.PatternBuilder;
import org.traccar.model.CellTower;
import org.traccar.model.Network;
import org.traccar.model.Position;
import java.net.SocketAddress;
import java.util.regex.Pattern;
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).(ddd),") // time (hhmmss.sss)
.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),") // lac
.number("(xxxx);") // cid
.any() // checksum
.compile();
private static final Pattern PATTERN_ALTERNATIVE = new PatternBuilder()
.number("(d+),") // mcc
.number("(d+),") // mnc
.number("(xxxx),") // lac
.number("(xxxx),") // cid
.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(0), parser.nextInt(0), parser.nextInt(0), parser.nextInt(0));
position.setValid(parser.next().equals("A"));
position.setLatitude(parser.nextCoordinate());
position.setLongitude(parser.nextCoordinate());
position.setSpeed(parser.nextDouble(0));
position.setCourse(parser.nextDouble(0));
dateBuilder.setDateReverse(parser.nextInt(0), parser.nextInt(0), parser.nextInt(0));
position.setTime(dateBuilder.getDate());
return true;
}
private Position decodeOld(Channel channel, SocketAddress remoteAddress, 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(Position.KEY_ALARM, decodeAlarm(parser.next()));
DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, parser.next(), id);
if (deviceSession == null) {
return null;
}
position.setDeviceId(deviceSession.getDeviceId());
position.set(Position.KEY_SATELLITES, parser.next());
position.setAltitude(parser.nextDouble(0));
position.set(Position.KEY_POWER, parser.nextDouble(0));
String charger = parser.next();
if (charger != null) {
position.set(Position.KEY_CHARGE, Integer.parseInt(charger) == 1);
}
if (parser.hasNext(4)) {
position.setNetwork(new Network(CellTower.from(
parser.nextInt(0), parser.nextInt(0), parser.nextHexInt(0), parser.nextHexInt(0))));
}
} else {
DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, id);
if (deviceSession == null) {
return null;
}
position.setDeviceId(deviceSession.getDeviceId());
}
} else {
Parser parser = new Parser(PATTERN_ALTERNATIVE, status);
if (parser.matches()) {
DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, id);
if (deviceSession == null) {
return null;
}
position.setDeviceId(deviceSession.getDeviceId());
position.setNetwork(new Network(CellTower.from(parser.nextInt(0), parser.nextInt(0),
parser.nextHexInt(0), parser.nextHexInt(0), parser.nextInt(0))));
position.set(Position.KEY_BATTERY, Double.parseDouble(parser.next()));
position.set(Position.KEY_FLAGS, parser.next());
position.set(Position.KEY_INPUT, parser.next());
position.set(Position.KEY_OUTPUT, parser.next());
position.set(Position.PREFIX_ADC + 1, parser.next());
position.set(Position.PREFIX_ADC + 2, parser.next());
position.set(Position.PREFIX_ADC + 3, parser.next());
position.set(Position.KEY_ALARM, decodeAlarm(parser.next()));
}
}
return position;
}
private static final Pattern PATTERN_NEW = new PatternBuilder()
.number("dddd").optional()
.text("$MGV")
.number("ddd,")
.number("(d+),") // imei
.expression("[^,]*,") // name
.expression("([RS]),")
.number("(dd)(dd)(dd),") // date (ddmmyy)
.number("(dd)(dd)(dd),") // time (hhmmss)
.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),") // lac
.number("(xxxx),") // cid
.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*,")
.number("(d+)?,") // battery
.expression("([^,]*);") // alert
.any()
.compile();
private Position decodeNew(Channel channel, SocketAddress remoteAddress, String sentence) {
Parser parser = new Parser(PATTERN_NEW, 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());
if (parser.next().equals("S")) {
position.set(Position.KEY_ARCHIVE, true);
}
position.setTime(parser.nextDateTime(Parser.DateTimeFormat.DMY_HMS));
position.setValid(parser.next().equals("A"));
position.setLatitude(parser.nextCoordinate());
position.setLongitude(parser.nextCoordinate());
position.set(Position.KEY_SATELLITES, parser.nextInt(0));
position.set(Position.KEY_HDOP, parser.nextDouble(0));
position.setSpeed(parser.nextDouble(0));
position.setCourse(parser.nextDouble(0));
position.setAltitude(parser.nextDouble(0));
if (parser.hasNext()) {
position.set(Position.KEY_ODOMETER, parser.nextDouble(0) * 1000);
}
position.setNetwork(new Network(CellTower.from(
parser.nextInt(0), parser.nextInt(0), parser.nextHexInt(0), parser.nextHexInt(0), parser.nextInt(0))));
position.set(Position.KEY_INPUT, parser.nextBinInt(0));
position.set(Position.KEY_OUTPUT, parser.nextBinInt(0));
for (int i = 1; i <= 3; i++) {
position.set(Position.PREFIX_ADC + i, parser.nextInt(0));
}
for (int i = 1; i <= 2; i++) {
String adc = parser.next();
if (adc != null) {
position.set(Position.PREFIX_TEMP + i, Double.parseDouble(adc));
}
}
position.set(Position.KEY_RFID, parser.next());
String battery = parser.next();
if (battery != null) {
position.set(Position.KEY_BATTERY, Integer.parseInt(battery));
}
position.set(Position.KEY_ALARM, decodeAlarm(parser.next()));
return position;
}
private String decodeAlarm(String value) {
switch (value) {
case "SOS":
case "Help":
return Position.ALARM_SOS;
case "Over Speed":
case "OverSpeed":
return Position.ALARM_OVERSPEED;
case "LowSpeed":
return Position.ALARM_LOW_SPEED;
case "Low Battery":
case "LowBattery":
return Position.ALARM_LOW_BATTERY;
case "VIB":
return Position.ALARM_VIBRATION;
case "Move in":
case "Geo in":
case "Geo1 in":
case "Geo2 in":
return Position.ALARM_GEOFENCE_ENTER;
case "Move out":
case "Geo out":
case "Geo1 out":
case "Geo2 out":
return Position.ALARM_GEOFENCE_EXIT;
default:
return null;
}
}
@Override
protected Object decode(
Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
String sentence = (String) msg;
if (sentence.contains("$MG")) {
return decodeNew(channel, remoteAddress, sentence);
} else {
return decodeOld(channel, remoteAddress, sentence);
}
}
}