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/*
* Copyright 2022 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.Parser;
import org.traccar.helper.PatternBuilder;
import org.traccar.helper.UnitsConverter;
import org.traccar.model.Position;
import org.traccar.session.DeviceSession;
import java.net.SocketAddress;
import java.util.regex.Pattern;
public class BstplProtocolDecoder extends BaseProtocolDecoder {
public BstplProtocolDecoder(Protocol protocol) {
super(protocol);
}
private static final Pattern PATTERN = new PatternBuilder()
.text("BSTPL$") // header
.number("(d),") // type
.expression("([^,]+),") // device id
.expression("([AV]),") // validity
.number("(dd)(dd)(dd),") // date (ddmmyy)
.number("(dd)(dd)(dd),") // time (hhmmss)
.number("(d+.d+),([0NS]),") // latitude
.number("(d+.d+),([0EW]),") // longitude
.number("(d+),") // speed
.number("(d+),") // odometer
.number("(d+),") // course
.number("(d+),") // satellites
.number("([01]),") // box open
.number("(d+),") // rssi
.number("([01]),") // charge
.number("([01]),") // ignition
.number("([01]),") // engine
.number("([01]),") // locked
.number("(d+.d+),") // adc
.number("d+,") // reserved
.number("(d+.d+),") // battery
.expression("([^,]+),") // firmware
.number("([^,]+),") // iccid
.number("(d+.d+)") // power
.compile();
private String decodeAlarm(int value) {
return switch (value) {
case 4 -> Position.ALARM_LOW_BATTERY;
case 5 -> Position.ALARM_ACCELERATION;
case 6 -> Position.ALARM_BRAKING;
case 7 -> Position.ALARM_OVERSPEED;
case 9 -> Position.ALARM_SOS;
default -> null;
};
}
@Override
protected Object decode(
Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
Parser parser = new Parser(PATTERN, (String) msg);
if (!parser.matches()) {
return null;
}
int type = parser.nextInt();
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_ALARM, decodeAlarm(type));
position.setValid(parser.next().equals("A"));
position.setTime(parser.nextDateTime(Parser.DateTimeFormat.DMY_HMS));
position.setLatitude(parser.nextCoordinate(Parser.CoordinateFormat.DEG_HEM));
position.setLongitude(parser.nextCoordinate(Parser.CoordinateFormat.DEG_HEM));
position.setSpeed(UnitsConverter.knotsFromKph(parser.nextInt()));
position.set(Position.KEY_ODOMETER, parser.nextInt() * 1000L);
position.setCourse(parser.nextInt());
position.set(Position.KEY_SATELLITES, parser.nextInt());
boolean boxOpen = parser.nextInt() > 0;
if (type == 8 && boxOpen) {
position.set(Position.KEY_ALARM, Position.ALARM_TAMPERING);
}
position.set("boxOpen", boxOpen);
position.set(Position.KEY_RSSI, parser.nextInt());
boolean charge = parser.nextInt() > 0;
if (type == 3) {
position.set(Position.KEY_ALARM, charge ? Position.ALARM_POWER_RESTORED : Position.ALARM_POWER_CUT);
}
position.set(Position.KEY_CHARGE, charge);
position.set(Position.KEY_IGNITION, parser.nextInt() > 0);
position.set("engine", parser.nextInt() > 0);
position.set(Position.KEY_BLOCKED, parser.nextInt() > 0);
position.set(Position.PREFIX_ADC + 1, parser.nextDouble());
position.set(Position.KEY_BATTERY, parser.nextDouble());
position.set(Position.KEY_ICCID, parser.next());
position.set(Position.KEY_POWER, parser.nextDouble());
return position;
}
}
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