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/*
* Copyright 2013 - 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.Unpooled;
import io.netty.channel.Channel;
import org.traccar.BaseProtocolDecoder;
import org.traccar.DeviceSession;
import org.traccar.helper.DataConverter;
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 RuptelaProtocolDecoder extends BaseProtocolDecoder {
public RuptelaProtocolDecoder(RuptelaProtocol protocol) {
super(protocol);
}
public static final int MSG_RECORDS = 1;
public static final int MSG_DEVICE_CONFIGURATION = 2;
public static final int MSG_DEVICE_VERSION = 3;
public static final int MSG_FIRMWARE_UPDATE = 4;
public static final int MSG_SET_CONNECTION = 5;
public static final int MSG_SET_ODOMETER = 6;
public static final int MSG_SMS_VIA_GPRS_RESPONSE = 7;
public static final int MSG_SMS_VIA_GPRS = 8;
public static final int MSG_DTCS = 9;
public static final int MSG_SET_IO = 17;
public static final int MSG_EXTENDED_RECORDS = 68;
private Position decodeCommandResponse(DeviceSession deviceSession, int type, ByteBuf buf) {
Position position = new Position(getProtocolName());
position.setDeviceId(deviceSession.getDeviceId());
getLastLocation(position, null);
position.set(Position.KEY_TYPE, type);
switch (type) {
case MSG_DEVICE_CONFIGURATION:
case MSG_DEVICE_VERSION:
case MSG_FIRMWARE_UPDATE:
case MSG_SMS_VIA_GPRS_RESPONSE:
position.set(Position.KEY_RESULT,
buf.toString(buf.readerIndex(), buf.readableBytes() - 2, StandardCharsets.US_ASCII).trim());
return position;
case MSG_SET_IO:
position.set(Position.KEY_RESULT,
String.valueOf(buf.readUnsignedByte()));
return position;
default:
return null;
}
}
private long readValue(ByteBuf buf, int length, boolean signed) {
switch (length) {
case 1:
return signed ? buf.readByte() : buf.readUnsignedByte();
case 2:
return signed ? buf.readShort() : buf.readUnsignedShort();
case 4:
return signed ? buf.readInt() : buf.readUnsignedInt();
default:
return buf.readLong();
}
}
private void decodeParameter(Position position, int id, ByteBuf buf, int length) {
switch (id) {
case 2:
case 3:
case 4:
position.set("di" + (id - 1), readValue(buf, length, false));
break;
case 5:
position.set(Position.KEY_IGNITION, readValue(buf, length, false) == 1);
break;
case 74:
position.set(Position.PREFIX_TEMP + 3, readValue(buf, length, true) * 0.1);
break;
case 78:
case 79:
case 80:
position.set(Position.PREFIX_TEMP + (id - 78), readValue(buf, length, true) * 0.1);
break;
default:
position.set(Position.PREFIX_IO + id, readValue(buf, length, false));
break;
}
}
@Override
protected Object decode(
Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
ByteBuf buf = (ByteBuf) msg;
buf.readUnsignedShort(); // data length
String imei = String.format("%015d", buf.readLong());
DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, imei);
if (deviceSession == null) {
return null;
}
int type = buf.readUnsignedByte();
if (type == MSG_RECORDS || type == MSG_EXTENDED_RECORDS) {
List<Position> positions = new LinkedList<>();
buf.readUnsignedByte(); // records left
int count = buf.readUnsignedByte();
for (int i = 0; i < count; i++) {
Position position = new Position(getProtocolName());
position.setDeviceId(deviceSession.getDeviceId());
position.setTime(new Date(buf.readUnsignedInt() * 1000));
buf.readUnsignedByte(); // timestamp extension
if (type == MSG_EXTENDED_RECORDS) {
buf.readUnsignedByte(); // record extension
}
buf.readUnsignedByte(); // priority (reserved)
position.setValid(true);
position.setLongitude(buf.readInt() / 10000000.0);
position.setLatitude(buf.readInt() / 10000000.0);
position.setAltitude(buf.readUnsignedShort() / 10.0);
position.setCourse(buf.readUnsignedShort() / 100.0);
position.set(Position.KEY_SATELLITES, buf.readUnsignedByte());
position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedShort()));
position.set(Position.KEY_HDOP, buf.readUnsignedByte() / 10.0);
if (type == MSG_EXTENDED_RECORDS) {
position.set(Position.KEY_EVENT, buf.readUnsignedShort());
} else {
position.set(Position.KEY_EVENT, buf.readUnsignedByte());
}
// Read 1 byte data
int cnt = buf.readUnsignedByte();
for (int j = 0; j < cnt; j++) {
int id = type == MSG_EXTENDED_RECORDS ? buf.readUnsignedShort() : buf.readUnsignedByte();
decodeParameter(position, id, buf, 1);
}
// Read 2 byte data
cnt = buf.readUnsignedByte();
for (int j = 0; j < cnt; j++) {
int id = type == MSG_EXTENDED_RECORDS ? buf.readUnsignedShort() : buf.readUnsignedByte();
decodeParameter(position, id, buf, 2);
}
// Read 4 byte data
cnt = buf.readUnsignedByte();
for (int j = 0; j < cnt; j++) {
int id = type == MSG_EXTENDED_RECORDS ? buf.readUnsignedShort() : buf.readUnsignedByte();
decodeParameter(position, id, buf, 4);
}
// Read 8 byte data
cnt = buf.readUnsignedByte();
for (int j = 0; j < cnt; j++) {
int id = type == MSG_EXTENDED_RECORDS ? buf.readUnsignedShort() : buf.readUnsignedByte();
decodeParameter(position, id, buf, 8);
}
positions.add(position);
}
if (channel != null) {
channel.write(Unpooled.wrappedBuffer(DataConverter.parseHex("0002640113bc")));
}
return positions;
} else if (type == MSG_DTCS) {
List<Position> positions = new LinkedList<>();
int count = buf.readUnsignedByte();
for (int i = 0; i < count; i++) {
Position position = new Position(getProtocolName());
position.setDeviceId(deviceSession.getDeviceId());
buf.readUnsignedByte(); // reserved
position.setTime(new Date(buf.readUnsignedInt() * 1000));
position.setValid(true);
position.setLongitude(buf.readInt() / 10000000.0);
position.setLatitude(buf.readInt() / 10000000.0);
if (buf.readUnsignedByte() == 2) {
position.set(Position.KEY_ARCHIVE, true);
}
position.set(Position.KEY_DTCS, buf.readBytes(5).toString(StandardCharsets.US_ASCII));
positions.add(position);
}
if (channel != null) {
channel.write(Unpooled.wrappedBuffer(DataConverter.parseHex("00026d01c4a4")));
}
return positions;
} else {
return decodeCommandResponse(deviceSession, type, buf);
}
}
}
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