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/*
* Copyright 2021 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.session.DeviceSession;
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 java.net.SocketAddress;
import java.util.regex.Pattern;
public class JidoProtocolDecoder extends BaseProtocolDecoder {
public JidoProtocolDecoder(Protocol protocol) {
super(protocol);
}
private static final Pattern PATTERN = new PatternBuilder()
.text("*")
.number("(d+),") // imei
.number("(d+),") // command
.expression("([AV]),").optional() // validity
.number("(dd)(dd)(dd),") // date (ddmmyy)
.number("(dd)(dd)(dd),") // time (hhmmss)
.number("(d+)(dd.d+),") // latitude
.expression("([NS]),")
.number("(d+)(dd.d+),") // longitude
.expression("([EW]),")
.groupBegin()
.number("(d+),") // speed
.number("(d+),") // odometer
.number("(d+),") // course
.number("(-?d+),") // altitude
.number("(d+),") // satellites
.number("d+,") // gsm 1
.number("d+,") // gsm 2
.number("([01]),") // charging
.number("(d+),") // battery level
.expression("([YKN]),") // mode
.number("([01]),") // lock
.number("[^,]+,") // accelerometer x
.number("[^,]+,") // accelerometer y
.number("[^,]+,") // accelerometer z
.or()
.expression("[^,]*,") // data
.groupEnd()
.number("xx") // checksum
.compile();
private String decodeAlarm(int type) {
switch (type) {
case 3:
return Position.ALARM_LOW_BATTERY;
case 4:
return Position.ALARM_TAMPERING;
default:
return 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;
}
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(parser.nextInt()));
if (parser.hasNext()) {
position.setValid(parser.next().equals("A"));
} else {
position.setValid(true);
}
position.setTime(parser.nextDateTime(Parser.DateTimeFormat.DMY_HMS));
position.setLatitude(parser.nextCoordinate());
position.setLongitude(parser.nextCoordinate());
if (parser.hasNext(9)) {
position.setSpeed(UnitsConverter.knotsFromKph(parser.nextInt()));
position.set(Position.KEY_ODOMETER, parser.nextInt());
position.setCourse(parser.nextInt());
position.setAltitude(parser.nextInt());
position.set(Position.KEY_SATELLITES, parser.nextInt());
position.set(Position.KEY_CHARGE, parser.nextInt() > 0);
position.set(Position.KEY_BATTERY_LEVEL, parser.nextInt());
position.set("mode", parser.next());
position.set(Position.KEY_BLOCKED, parser.nextInt() > 0);
}
return position;
}
}
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