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/*
* Copyright 2017 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.Context;
import org.traccar.DeviceSession;
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.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.TimeZone;
import java.util.regex.Pattern;
public class StarLinkProtocolDecoder extends BaseProtocolDecoder {
private String[] dataTags;
private DateFormat dateFormat;
public StarLinkProtocolDecoder(StarLinkProtocol protocol) {
super(protocol);
String format = Context.getConfig().getString(
getProtocolName() + ".format", "#EDT#,#EID#,#PDT#,#LAT#,#LONG#,#SPD#,#HEAD#,#ODO#,"
+ "#IN1#,#IN2#,#IN3#,#IN4#,#OUT1#,#OUT2#,#OUT3#,#OUT4#,#LAC#,#CID#,#VIN#,#VBAT#,#DEST#,#IGN#,#ENG#");
dataTags = format.split(",");
dateFormat = new SimpleDateFormat(
Context.getConfig().getString(getProtocolName() + ".dateFormat", "yyMMddHHmmss"));
dateFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
}
private static final Pattern PATTERN = new PatternBuilder()
.expression(".") // protocol head
.text("SLU") // message head
.number("(x{6}|d{15}),") // id
.number("(d+),") // type
.number("(d+),") // index
.expression("(.+)") // data
.text("*")
.number("xx") // checksum
.compile();
public static final int MSG_EVENT_REPORT = 6;
private double parseCoordinate(String value) {
int minutesIndex = value.indexOf('.') - 2;
double result = Double.parseDouble(value.substring(1, minutesIndex));
result += Double.parseDouble(value.substring(minutesIndex)) / 60;
return value.charAt(0) == '+' ? result : -result;
}
@Override
protected Object decode(
Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
Parser parser = new Parser(PATTERN, (String) msg);
if (!parser.matches()) {
return null;
}
DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, parser.next());
if (deviceSession == null) {
return null;
}
int type = parser.nextInt();
if (type != MSG_EVENT_REPORT) {
return null;
}
Position position = new Position();
position.setProtocol(getProtocolName());
position.setDeviceId(deviceSession.getDeviceId());
position.set(Position.KEY_INDEX, parser.nextInt());
String[] data = parser.next().split(",");
Integer lac = null, cid = null;
for (int i = 0; i < Math.min(data.length, dataTags.length); i++) {
switch (dataTags[i]) {
case "#EDT#":
position.setDeviceTime(dateFormat.parse(data[i]));
break;
case "EID":
position.set(Position.KEY_EVENT, data[i]);
break;
case "#PDT#":
position.setFixTime(dateFormat.parse(data[i]));
break;
case "#LAT#":
position.setLatitude(parseCoordinate(data[i]));
break;
case "#LONG#":
position.setLongitude(parseCoordinate(data[i]));
break;
case "#SPD#":
position.setSpeed(Double.parseDouble(data[i]));
break;
case "#HEAD#":
position.setCourse(Integer.parseInt(data[i]));
break;
case "#ODO#":
position.set(Position.KEY_ODOMETER, Integer.parseInt(data[i]));
break;
case "#IN1#":
position.set(Position.PREFIX_IN + 1, Integer.parseInt(data[i]));
break;
case "#IN2#":
position.set(Position.PREFIX_IN + 2, Integer.parseInt(data[i]));
break;
case "#IN3#":
position.set(Position.PREFIX_IN + 3, Integer.parseInt(data[i]));
break;
case "#IN4#":
position.set(Position.PREFIX_IN + 4, Integer.parseInt(data[i]));
break;
case "#OUT1#":
position.set(Position.PREFIX_OUT + 1, Integer.parseInt(data[i]));
break;
case "#OUT2#":
position.set(Position.PREFIX_OUT + 2, Integer.parseInt(data[i]));
break;
case "#OUT3#":
position.set(Position.PREFIX_OUT + 3, Integer.parseInt(data[i]));
break;
case "#OUT4#":
position.set(Position.PREFIX_OUT + 4, Integer.parseInt(data[i]));
break;
case "#LAC#":
lac = Integer.parseInt(data[i]);
break;
case "#CID#":
cid = Integer.parseInt(data[i]);
break;
case "#VIN#":
position.set(Position.KEY_POWER, Double.parseDouble(data[i]));
break;
case "#VBAT#":
position.set(Position.KEY_BATTERY, Double.parseDouble(data[i]));
break;
case "#DEST#":
position.set("destination", data[i]);
break;
case "#IGN#":
position.set(Position.KEY_IGNITION, data[i].equals("1"));
break;
case "#ENG#":
position.set("engine", data[i].equals("1"));
break;
default:
break;
}
}
if (lac != null && cid != null) {
position.setNetwork(new Network(CellTower.fromLacCid(lac, cid)));
}
return position;
}
}
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