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/*
* Copyright 2015 - 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.buffer.ByteBuf;
import io.netty.buffer.ByteBufUtil;
import io.netty.channel.Channel;
import org.traccar.BaseProtocolDecoder;
import org.traccar.DeviceSession;
import org.traccar.Protocol;
import org.traccar.helper.BitUtil;
import org.traccar.helper.DateBuilder;
import org.traccar.model.CellTower;
import org.traccar.model.Network;
import org.traccar.model.Position;
import java.net.SocketAddress;
public class TzoneProtocolDecoder extends BaseProtocolDecoder {
public TzoneProtocolDecoder(Protocol protocol) {
super(protocol);
}
private String decodeAlarm(Short value) {
switch (value) {
case 0x01:
return Position.ALARM_SOS;
case 0x10:
return Position.ALARM_LOW_BATTERY;
case 0x11:
return Position.ALARM_OVERSPEED;
case 0x14:
return Position.ALARM_BRAKING;
case 0x15:
return Position.ALARM_ACCELERATION;
case 0x30:
return Position.ALARM_PARKING;
case 0x42:
return Position.ALARM_GEOFENCE_EXIT;
case 0x43:
return Position.ALARM_GEOFENCE_ENTER;
default:
return null;
}
}
private boolean decodeGps(Position position, ByteBuf buf, int hardware) {
int blockLength = buf.readUnsignedShort();
int blockEnd = buf.readerIndex() + blockLength;
if (blockLength < 22) {
return false;
}
position.set(Position.KEY_SATELLITES, buf.readUnsignedByte());
double lat;
double lon;
if (hardware == 0x10A || hardware == 0x10B) {
lat = buf.readUnsignedInt() / 600000.0;
lon = buf.readUnsignedInt() / 600000.0;
} else {
lat = buf.readUnsignedInt() / 100000.0 / 60.0;
lon = buf.readUnsignedInt() / 100000.0 / 60.0;
}
position.setFixTime(new DateBuilder()
.setDate(buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte())
.setTime(buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte()).getDate());
position.setSpeed(buf.readUnsignedShort() * 0.01);
position.set(Position.KEY_ODOMETER, buf.readUnsignedMedium());
int flags = buf.readUnsignedShort();
position.setCourse(BitUtil.to(flags, 9));
if (!BitUtil.check(flags, 10)) {
lat = -lat;
}
position.setLatitude(lat);
if (BitUtil.check(flags, 9)) {
lon = -lon;
}
position.setLongitude(lon);
position.setValid(BitUtil.check(flags, 11));
buf.readerIndex(blockEnd);
return true;
}
private void decodeCards(Position position, ByteBuf buf) {
int index = 1;
for (int i = 0; i < 4; i++) {
int blockLength = buf.readUnsignedShort();
int blockEnd = buf.readerIndex() + blockLength;
if (blockLength > 0) {
int count = buf.readUnsignedByte();
for (int j = 0; j < count; j++) {
int length = buf.readUnsignedByte();
boolean odd = length % 2 != 0;
if (odd) {
length += 1;
}
String num = ByteBufUtil.hexDump(buf.readSlice(length / 2));
if (odd) {
num = num.substring(1);
}
position.set("card" + index, num);
}
}
buf.readerIndex(blockEnd);
}
}
private void decodePassengers(Position position, ByteBuf buf) {
int blockLength = buf.readUnsignedShort();
int blockEnd = buf.readerIndex() + blockLength;
if (blockLength > 0) {
position.set("passengersOn", buf.readUnsignedMedium());
position.set("passengersOff", buf.readUnsignedMedium());
}
buf.readerIndex(blockEnd);
}
private void decodeTags(Position position, ByteBuf buf) {
int blockLength = buf.readUnsignedShort();
int blockEnd = buf.readerIndex() + blockLength;
if (blockLength > 0) {
buf.readUnsignedByte(); // tag type
int count = buf.readUnsignedByte();
int tagLength = buf.readUnsignedByte();
for (int i = 1; i <= count; i++) {
int tagEnd = buf.readerIndex() + tagLength;
buf.readUnsignedByte(); // status
buf.readUnsignedShortLE(); // battery voltage
position.set(Position.PREFIX_TEMP + i, (buf.readShortLE() & 0x3fff) * 0.1);
buf.readUnsignedByte(); // humidity
buf.readUnsignedByte(); // rssi
buf.readerIndex(tagEnd);
}
}
buf.readerIndex(blockEnd);
}
@Override
protected Object decode(
Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
ByteBuf buf = (ByteBuf) msg;
buf.skipBytes(2); // header
buf.readUnsignedShort(); // length
if (buf.readUnsignedShort() != 0x2424) {
return null;
}
int hardware = buf.readUnsignedShort();
long firmware = buf.readUnsignedInt();
String imei = ByteBufUtil.hexDump(buf.readSlice(8)).substring(1);
DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, imei);
if (deviceSession == null) {
return null;
}
Position position = new Position(getProtocolName());
position.setDeviceId(deviceSession.getDeviceId());
position.set(Position.KEY_VERSION_HW, hardware);
position.set(Position.KEY_VERSION_FW, firmware);
position.setDeviceTime(new DateBuilder()
.setDate(buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte())
.setTime(buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte()).getDate());
// GPS info
if (hardware == 0x406 || !decodeGps(position, buf, hardware)) {
getLastLocation(position, position.getDeviceTime());
}
// LBS info
int blockLength = buf.readUnsignedShort();
int blockEnd = buf.readerIndex() + blockLength;
if (blockLength > 0 && (hardware == 0x10A || hardware == 0x10B || hardware == 0x406)) {
position.setNetwork(new Network(
CellTower.fromLacCid(buf.readUnsignedShort(), buf.readUnsignedShort())));
}
buf.readerIndex(blockEnd);
// Status info
blockLength = buf.readUnsignedShort();
blockEnd = buf.readerIndex() + blockLength;
if (blockLength >= 13) {
position.set(Position.KEY_ALARM, decodeAlarm(buf.readUnsignedByte()));
position.set("terminalInfo", buf.readUnsignedByte());
int status = buf.readUnsignedByte();
position.set(Position.PREFIX_OUT + 1, BitUtil.check(status, 0));
position.set(Position.PREFIX_OUT + 2, BitUtil.check(status, 1));
status = buf.readUnsignedByte();
position.set(Position.PREFIX_IN + 1, BitUtil.check(status, 4));
if (BitUtil.check(status, 0)) {
position.set(Position.KEY_ALARM, Position.ALARM_SOS);
}
position.set(Position.KEY_RSSI, buf.readUnsignedByte());
position.set("gsmStatus", buf.readUnsignedByte());
position.set(Position.KEY_BATTERY, buf.readUnsignedShort());
position.set(Position.KEY_POWER, buf.readUnsignedShort());
position.set(Position.PREFIX_ADC + 1, buf.readUnsignedShort());
position.set(Position.PREFIX_ADC + 2, buf.readUnsignedShort());
}
if (blockLength >= 15) {
position.set(Position.PREFIX_TEMP + 1, buf.readUnsignedShort());
}
buf.readerIndex(blockEnd);
if (hardware == 0x10B) {
decodeCards(position, buf);
buf.skipBytes(buf.readUnsignedShort()); // temperature
buf.skipBytes(buf.readUnsignedShort()); // lock
decodePassengers(position, buf);
}
if (hardware == 0x406) {
decodeTags(position, buf);
}
return position;
}
}
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