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/*
* Copyright 2016 - 2024 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.buffer.ByteBuf;
import io.netty.buffer.ByteBufUtil;
import io.netty.buffer.Unpooled;
import io.netty.channel.Channel;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.traccar.BaseProtocolDecoder;
import org.traccar.session.DeviceSession;
import org.traccar.NetworkMessage;
import org.traccar.Protocol;
import org.traccar.helper.BitUtil;
import org.traccar.helper.DateBuilder;
import org.traccar.helper.UnitsConverter;
import org.traccar.model.Position;
import java.net.SocketAddress;
import java.nio.charset.StandardCharsets;
import java.util.Date;
import java.util.LinkedList;
import java.util.List;
public class AstraProtocolDecoder extends BaseProtocolDecoder {
private static final Logger LOGGER = LoggerFactory.getLogger(AstraProtocolDecoder.class);
public AstraProtocolDecoder(Protocol protocol) {
super(protocol);
}
public static final int MSG_HEARTBEAT = 0x1A;
public static final int MSG_DATA = 0x10;
@Override
protected Object decode(
Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
ByteBuf buf = (ByteBuf) msg;
byte protocol = buf.readByte();
buf.readUnsignedShort(); // length
if (channel != null) {
channel.writeAndFlush(new NetworkMessage(Unpooled.wrappedBuffer(new byte[] {0x06}), remoteAddress));
}
return switch (protocol) {
case 'K' -> decodeK(channel, remoteAddress, buf);
case 'X' -> decodeX(channel, remoteAddress, buf);
default -> null;
};
}
private String readImei(ByteBuf buf) {
return String.format("%08d", buf.readUnsignedInt()) + String.format("%07d", buf.readUnsignedMedium());
}
private Date readTime(ByteBuf buf) {
DateBuilder dateBuilder = new DateBuilder()
.setDate(1980, 1, 6).addMillis(buf.readUnsignedInt() * 1000L);
return dateBuilder.getDate();
}
private Object decodeK(Channel channel, SocketAddress remoteAddress, ByteBuf buf) {
DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, readImei(buf));
if (deviceSession == null) {
return null;
}
List<Position> positions = new LinkedList<>();
while (buf.readableBytes() > 2) {
Position position = new Position(getProtocolName());
position.setDeviceId(deviceSession.getDeviceId());
buf.readUnsignedByte(); // index
position.setValid(true);
position.setLatitude(buf.readInt() * 0.000001);
position.setLongitude(buf.readInt() * 0.000001);
position.setTime(readTime(buf));
position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedByte() * 2));
position.setCourse(buf.readUnsignedByte() * 2);
int reason = buf.readUnsignedMedium();
position.set(Position.KEY_EVENT, reason);
int status = buf.readUnsignedShort();
position.set(Position.KEY_STATUS, status);
position.set(Position.PREFIX_IO + 1, buf.readUnsignedByte());
position.set(Position.PREFIX_ADC + 1, buf.readUnsignedByte());
position.set(Position.KEY_BATTERY, buf.readUnsignedByte());
position.set(Position.KEY_POWER, buf.readUnsignedByte());
buf.readUnsignedByte(); // max journey speed
buf.skipBytes(6); // accelerometer
position.set(Position.KEY_ODOMETER_TRIP, buf.readUnsignedShort());
buf.readUnsignedShort(); // journey idle time
position.setAltitude(buf.readUnsignedByte() * 20);
int quality = buf.readUnsignedByte();
position.set(Position.KEY_SATELLITES, quality & 0xf);
position.set(Position.KEY_RSSI, quality >> 4);
buf.readUnsignedByte(); // geofence events
if (BitUtil.check(status, 8)) {
position.set(Position.KEY_DRIVER_UNIQUE_ID, buf.readSlice(7).toString(StandardCharsets.US_ASCII));
position.set(Position.KEY_ODOMETER, buf.readUnsignedMedium() * 1000);
position.set(Position.KEY_HOURS, UnitsConverter.msFromHours(buf.readUnsignedShort()));
}
if (BitUtil.check(status, 6)) {
LOGGER.warn("Extension data is not supported");
return position;
}
positions.add(position);
}
return positions;
}
private Object decodeX(Channel channel, SocketAddress remoteAddress, ByteBuf buf) {
int count = buf.readUnsignedByte();
DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, readImei(buf));
if (deviceSession == null) {
return null;
}
List<Position> positions = new LinkedList<>();
for (int i = 0; i < count; i++) {
Position position = new Position(getProtocolName());
position.setDeviceId(deviceSession.getDeviceId());
position.set(Position.KEY_INDEX, buf.readUnsignedByte());
long mask = ((long) buf.readUnsignedShort() << 32) + buf.readUnsignedInt();
position.setDeviceTime(readTime(buf));
position.set(Position.KEY_EVENT, buf.readUnsignedInt());
position.set(Position.KEY_STATUS, buf.readUnsignedShort());
if ((mask & 1L) > 0) {
position.set(Position.KEY_POWER, buf.readUnsignedByte() * 0.2);
position.set(Position.KEY_BATTERY_LEVEL, buf.readUnsignedByte());
}
if ((mask & 2L) > 0) {
position.setValid(true);
position.setFixTime(readTime(buf));
position.setLatitude(buf.readInt() * 0.000001);
position.setLongitude(buf.readInt() * 0.000001);
position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedByte() * 2));
buf.readUnsignedByte(); // max speed since last report
position.setCourse(buf.readUnsignedByte() * 2);
position.setAltitude(buf.readUnsignedByte() * 20);
position.set(Position.KEY_ODOMETER_TRIP, buf.readUnsignedShort() * 100);
} else {
getLastLocation(position, position.getDeviceTime());
}
if ((mask & 4L) > 0) {
buf.readUnsignedShort(); // states
buf.readUnsignedShort(); // changes mask
}
if ((mask & 8L) > 0) {
buf.readUnsignedShort(); // adc1
buf.readUnsignedShort(); // adc2
}
if ((mask & 16L) > 0) {
position.set("xMax", buf.readByte());
position.set("xMin", buf.readByte());
position.set("yMax", buf.readByte());
position.set("yMin", buf.readByte());
position.set("zMax", buf.readByte());
position.set("zMin", buf.readByte());
position.set("idleHours", buf.readUnsignedShort());
}
if ((mask & 32L) > 0) {
int value = buf.readUnsignedByte();
position.set(Position.KEY_SATELLITES, BitUtil.to(value, 4));
position.set(Position.KEY_RSSI, BitUtil.from(value, 4));
}
if ((mask & 64L) > 0) {
buf.readUnsignedShort(); // mcc
buf.readUnsignedShort(); // mnc
}
if ((mask & 128L) > 0) {
buf.readUnsignedByte(); // geofences
}
if ((mask & 256L) > 0) {
buf.readUnsignedByte(); // source
buf.readLong(); // driver id
}
if ((mask & 512L) > 0) {
buf.readUnsignedByte(); // source
buf.skipBytes(10); // trailer id
buf.readUnsignedByte(); // status
}
if ((mask & 1024L) > 0) {
position.set("axleWeight", buf.readUnsignedShort());
}
if ((mask & 2048L) > 0) {
position.set(Position.KEY_ODOMETER, buf.readUnsignedMedium() * 1000);
position.set(Position.KEY_HOURS, buf.readUnsignedShort() * 3_600_000);
}
if ((mask & 4096L) > 0) {
position.set("wheelSpeedMax", buf.readUnsignedByte());
position.set("wheelSpeedAvg", buf.readUnsignedByte());
position.set("rpmMax", buf.readUnsignedByte() * 32);
position.set("rpmAvg", buf.readUnsignedByte() * 32);
position.set("acceleratorMax", buf.readUnsignedByte());
position.set("acceleratorAvg", buf.readUnsignedByte());
position.set("engineLoadMax", buf.readUnsignedByte());
position.set("engineLoadAvg", buf.readUnsignedByte());
position.set(Position.KEY_ODOMETER_TRIP, buf.readUnsignedShort() * 100);
position.set(Position.KEY_COOLANT_TEMP, buf.readByte() + 40);
position.set("fmsStatus", buf.readUnsignedShort());
position.set("fmsEvents", buf.readUnsignedShort());
position.set(Position.KEY_FUEL_LEVEL, buf.readUnsignedByte());
position.set(Position.KEY_FUEL_USED, buf.readUnsignedInt() * 0.5);
}
if ((mask & 8192L) > 0) {
position.set("wheelSpeedMax", buf.readUnsignedByte());
position.set("wheelSpeedAvg", buf.readUnsignedByte());
position.set("rpmMax", buf.readUnsignedByte() * 32);
position.set("rpmAvg", buf.readUnsignedByte() * 32);
position.set("acceleratorMax", buf.readUnsignedByte());
position.set("acceleratorAvg", buf.readUnsignedByte());
position.set("engineLoadMax", buf.readUnsignedByte());
position.set("engineLoadAvg", buf.readUnsignedByte());
position.set(Position.KEY_ODOMETER_TRIP, buf.readUnsignedShort() * 100);
position.set(Position.KEY_COOLANT_TEMP, buf.readByte() + 40);
position.set("obdStatus", buf.readUnsignedShort());
position.set("obdEvents", buf.readUnsignedShort());
position.set(Position.KEY_FUEL_LEVEL, buf.readUnsignedByte());
position.set(Position.KEY_FUEL_USED, buf.readUnsignedShort() * 0.1);
}
if ((mask & 16384L) > 0) {
for (int j = 1; j <= 5; j++) {
position.set("dtc" + j, buf.readCharSequence(5, StandardCharsets.US_ASCII).toString());
}
}
if ((mask & 32768L) > 0) {
position.set(Position.KEY_ODOMETER, buf.readUnsignedMedium() * 1000);
position.set(Position.KEY_HOURS, buf.readUnsignedShort() * 3_600_000);
position.set("axleWeight", buf.readUnsignedShort());
position.set("tripFuelUsed", buf.readUnsignedShort() * 0.1);
position.set("tripCruise", buf.readUnsignedShort());
position.set(Position.KEY_ODOMETER_SERVICE, buf.readUnsignedShort() * 5);
}
if ((mask & 65536L) > 0) {
position.set(Position.KEY_ODOMETER, buf.readUnsignedMedium() * 1000);
position.set(Position.KEY_HOURS, buf.readUnsignedShort() * 3_600_000);
buf.readUnsignedShort(); // time with mil on
buf.readUnsignedShort(); // distance with mil on
}
if ((mask & 131072L) > 0) {
for (int j = 1; j <= 6; j++) {
position.set(Position.PREFIX_TEMP + j, buf.readShort() * 0.1);
}
for (int j = 1; j <= 3; j++) {
position.set("setpoint" + j, buf.readByte() * 0.5);
}
buf.readUnsignedByte(); // refrigerator fuel level
buf.readUnsignedShort(); // refrigerator total engine hours
buf.readUnsignedShort(); // refrigerator total standby hours
buf.readUnsignedShort(); // refrigerator status
buf.readUnsignedMedium(); // alarm flags
}
if ((mask & 262144L) > 0) {
for (int j = 1; j <= 4; j++) {
position.set(Position.PREFIX_TEMP + j, (buf.readUnsignedShort() - 550) * 0.1);
}
}
if ((mask & 524288L) > 0) {
position.set("alarmCount", buf.readUnsignedByte());
position.set("alarmQueue", ByteBufUtil.hexDump(buf.readSlice(16)));
}
if ((mask & 4294967296L) > 0) {
for (int j = 1; j <= 6; j++) {
position.set("sensor" + j, buf.readUnsignedMedium());
}
}
positions.add(position);
}
return positions;
}
}
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