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/*
* Copyright 2023 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.Protocol;
import org.traccar.helper.BitUtil;
import org.traccar.helper.Parser;
import org.traccar.helper.PatternBuilder;
import org.traccar.model.Position;
import org.traccar.session.DeviceSession;
import java.net.SocketAddress;
import java.util.regex.Pattern;
public class NtoProtocolDecoder extends BaseProtocolDecoder {
public NtoProtocolDecoder(Protocol protocol) {
super(protocol);
}
private static final Pattern PATTERN = new PatternBuilder()
.text("^NB,") // manufacturer
.number("(d+),") // imei
.expression("(...),") // type
.number("(dd)(dd)(dd),") // date (ddmmyy)
.number("(dd)(dd)(dd),") // time (hhmmss)
.expression("([AVM]),") // validity
.number("([NS]),(dd)(dd.d+),") // latitude
.number("([EW]),(ddd)(dd.d+),") // longitude
.number("(d+.?d*),") // speed
.number("(d+),") // course
.number("(x+),") // status
.any()
.compile();
@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;
}
Position position = new Position(getProtocolName());
position.setDeviceId(deviceSession.getDeviceId());
position.set(Position.KEY_TYPE, parser.next());
position.setTime(parser.nextDateTime(Parser.DateTimeFormat.DMY_HMS));
position.setValid(parser.next().equals("A"));
position.setLatitude(parser.nextCoordinate(Parser.CoordinateFormat.HEM_DEG_MIN));
position.setLongitude(parser.nextCoordinate(Parser.CoordinateFormat.HEM_DEG_MIN));
position.setSpeed(parser.nextDouble());
position.setCourse(parser.nextInt());
long status = parser.nextHexLong();
position.set(Position.KEY_STATUS, status);
position.set(Position.KEY_ALARM, BitUtil.check(status, 1) ? Position.ALARM_JAMMING : null);
position.set(Position.KEY_ALARM, BitUtil.check(status, 3 * 8 + 1) ? Position.ALARM_POWER_CUT : null);
position.set(Position.KEY_ALARM, BitUtil.check(status, 3 * 8 + 2) ? Position.ALARM_OVERSPEED : null);
position.set(Position.KEY_ALARM, BitUtil.check(status, 3 * 8 + 3) ? Position.ALARM_VIBRATION : null);
position.set(Position.KEY_ALARM, BitUtil.check(status, 3 * 8 + 4) ? Position.ALARM_GEOFENCE_ENTER : null);
position.set(Position.KEY_ALARM, BitUtil.check(status, 3 * 8 + 5) ? Position.ALARM_GEOFENCE_EXIT : null);
position.set(Position.KEY_ALARM, BitUtil.check(status, 4 * 8) ? Position.ALARM_LOW_BATTERY : null);
position.set(Position.KEY_ALARM, BitUtil.check(status, 4 * 8 + 4) ? Position.ALARM_DOOR : null);
return position;
}
}
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