/*
* Copyright 2015 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.Parser;
import org.traccar.helper.PatternBuilder;
import org.traccar.helper.UnitsConverter;
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 FlextrackProtocolDecoder extends BaseProtocolDecoder {
public FlextrackProtocolDecoder(FlextrackProtocol protocol) {
super(protocol);
}
private static final Pattern PATTERN_LOGON = new PatternBuilder()
.number("(-?d+),") // index
.text("LOGON,")
.number("(d+),") // node id
.number("(d+)") // iccid
.compile();
private static final Pattern PATTERN = new PatternBuilder()
.number("(-?d+),") // index
.text("UNITSTAT,")
.number("(dddd)(dd)(dd),") // date (yyyymmdd)
.number("(dd)(dd)(dd),") // time (hhmmss)
.number("d+,") // node id
.number("([NS])(d+).(d+.d+),") // latitude
.number("([EW])(d+).(d+.d+),") // longitude
.number("(d+),") // speed
.number("(d+),") // course
.number("(d+),") // satellites
.number("(d+),") // battery
.number("(-?d+),") // gsm
.number("(x+),") // state
.number("(ddd)") // mcc
.number("(dd),") // mnc
.number("(-?d+),") // altitude
.number("(d+),") // hdop
.number("(x+),") // cell
.number("d+,") // gps fix time
.number("(x+),") // lac
.number("(d+)") // odometer
.compile();
private void sendAcknowledgement(Channel channel, String index) {
if (channel != null) {
channel.write(index + ",ACK\r");
}
}
@Override
protected Object decode(
Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
String sentence = (String) msg;
if (sentence.contains("LOGON")) {
Parser parser = new Parser(PATTERN_LOGON, sentence);
if (!parser.matches()) {
return null;
}
sendAcknowledgement(channel, parser.next());
String id = parser.next();
String iccid = parser.next();
getDeviceSession(channel, remoteAddress, iccid, id);
} else if (sentence.contains("UNITSTAT")) {
DeviceSession deviceSession = getDeviceSession(channel, remoteAddress);
if (deviceSession == null) {
return null;
}
Parser parser = new Parser(PATTERN, sentence);
if (!parser.matches()) {
return null;
}
Position position = new Position();
position.setProtocol(getProtocolName());
position.setDeviceId(deviceSession.getDeviceId());
sendAcknowledgement(channel, parser.next());
position.setTime(parser.nextDateTime());
position.setValid(true);
position.setLatitude(parser.nextCoordinate(Parser.CoordinateFormat.HEM_DEG_MIN));
position.setLongitude(parser.nextCoordinate(Parser.CoordinateFormat.HEM_DEG_MIN));
position.setSpeed(UnitsConverter.knotsFromKph(parser.nextInt(0)));
position.setCourse(parser.nextInt(0));
position.set(Position.KEY_SATELLITES, parser.nextInt(0));
position.set(Position.KEY_BATTERY, parser.nextInt(0));
int rssi = parser.nextInt(0);
position.set(Position.KEY_STATUS, parser.nextHexInt(0));
int mcc = parser.nextInt(0);
int mnc = parser.nextInt(0);
position.setAltitude(parser.nextInt(0));
position.set(Position.KEY_HDOP, parser.nextInt(0) * 0.1);
position.setNetwork(new Network(CellTower.from(
mcc, mnc, parser.nextHexInt(0), parser.nextHexInt(0), rssi)));
position.set(Position.KEY_ODOMETER, parser.nextInt(0));
return position;
}
return null;
}
}