/* * Copyright 2014 - 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.NetworkMessage; import org.traccar.Protocol; import org.traccar.helper.DateBuilder; import org.traccar.model.Position; import java.net.SocketAddress; import java.util.LinkedList; import java.util.List; public class OrionProtocolDecoder extends BaseProtocolDecoder { public OrionProtocolDecoder(Protocol protocol) { super(protocol); } public static final int MSG_USERLOG = 0; public static final int MSG_SYSLOG = 3; private static void sendResponse(Channel channel, ByteBuf buf) { if (channel != null) { ByteBuf response = Unpooled.buffer(4); response.writeByte('*'); response.writeShort(buf.getUnsignedShort(buf.writerIndex() - 2)); response.writeByte(buf.getUnsignedByte(buf.writerIndex() - 3)); channel.writeAndFlush(new NetworkMessage(response, channel.remoteAddress())); } } private static double convertCoordinate(int raw) { int degrees = raw / 1000000; double minutes = (raw % 1000000) / 10000.0; return degrees + minutes / 60; } @Override protected Object decode( Channel channel, SocketAddress remoteAddress, Object msg) throws Exception { ByteBuf buf = (ByteBuf) msg; buf.skipBytes(2); // header int type = buf.readUnsignedByte() & 0x0f; if (type == MSG_USERLOG) { int header = buf.readUnsignedByte(); if ((header & 0x40) != 0) { sendResponse(channel, buf); } DeviceSession deviceSession = getDeviceSession( channel, remoteAddress, String.valueOf(buf.readUnsignedInt())); if (deviceSession == null) { return null; } List<Position> positions = new LinkedList<>(); for (int i = 0; i < (header & 0x0f); i++) { Position position = new Position(getProtocolName()); position.setDeviceId(deviceSession.getDeviceId()); position.set(Position.KEY_EVENT, buf.readUnsignedByte()); buf.readUnsignedByte(); // length position.set(Position.KEY_FLAGS, buf.readUnsignedShortLE()); position.setLatitude(convertCoordinate(buf.readIntLE())); position.setLongitude(convertCoordinate(buf.readIntLE())); position.setAltitude(buf.readShortLE() / 10.0); position.setCourse(buf.readUnsignedShortLE()); position.setSpeed(buf.readUnsignedShortLE() * 0.0539957); DateBuilder dateBuilder = new DateBuilder() .setDate(buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte()) .setTime(buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte()); position.setTime(dateBuilder.getDate()); int satellites = buf.readUnsignedByte(); position.setValid(satellites >= 3); position.set(Position.KEY_SATELLITES, satellites); positions.add(position); } return positions; } return null; } }