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/*
* Copyright 2018 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 io.netty.channel.Channel;
import org.traccar.BaseProtocolDecoder;
import org.traccar.DeviceSession;
import org.traccar.NetworkMessage;
import org.traccar.Protocol;
import org.traccar.helper.DateBuilder;
import org.traccar.helper.Parser;
import org.traccar.helper.PatternBuilder;
import org.traccar.model.Command;
import org.traccar.model.Position;
import java.net.SocketAddress;
import java.util.regex.Pattern;
public class Xrb28ProtocolDecoder extends BaseProtocolDecoder {
private String pendingCommand;
public void setPendingCommand(String pendingCommand) {
this.pendingCommand = pendingCommand;
}
public Xrb28ProtocolDecoder(Protocol protocol) {
super(protocol);
}
private static final Pattern PATTERN = new PatternBuilder()
.text("*")
.expression("....,")
.expression("..,") // vendor
.number("d{15},") // imei
.expression("..,") // type
.number("0,") // reserved
.number("(dd)(dd)(dd).d+,") // time (hhmmss)
.expression("([AV]),") // validity
.number("(dd)(dd.d+),") // latitude
.expression("([NS]),")
.number("(d{2,3})(dd.d+),") // longitude
.expression("([EW]),")
.number("(d+),") // satellites
.number("(d+.d+),") // hdop
.number("(dd)(dd)(dd),") // date (ddmmyy)
.number("(-?d+.?d*),") // altitude
.expression(".,") // height unit
.expression(".#") // mode
.compile();
@Override
protected Object decode(
Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
String sentence = (String) msg;
DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, sentence.substring(9, 24));
if (deviceSession == null) {
return null;
}
String type = sentence.substring(25, 27);
if (channel != null) {
if (type.matches("L0|L1|W0|E1")) {
channel.write(new NetworkMessage(
sentence.substring(0, 27).replace("SCOR", "SCOS") + "#\n",
remoteAddress));
} else if (type.equals("R0") && pendingCommand != null) {
String command = pendingCommand.equals(Command.TYPE_ALARM_ARM) ? "L1," : "L0,";
channel.write(new NetworkMessage(
sentence.substring(0, 25).replace("SCOR", "SCOS") + command + sentence.substring(30) + "\n",
remoteAddress));
pendingCommand = null;
}
}
Parser parser = new Parser(PATTERN, sentence);
if (!parser.matches()) {
return null;
}
Position position = new Position(getProtocolName());
position.setDeviceId(deviceSession.getDeviceId());
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.set(Position.KEY_SATELLITES, parser.nextInt());
position.set(Position.KEY_HDOP, parser.nextDouble());
dateBuilder.setDateReverse(parser.nextInt(), parser.nextInt(), parser.nextInt());
position.setTime(dateBuilder.getDate());
position.setAltitude(parser.nextDouble());
return position;
}
}
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