/* * Copyright 2013 - 2016 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 org.jboss.netty.buffer.ChannelBuffer; import org.jboss.netty.buffer.ChannelBuffers; import org.jboss.netty.channel.Channel; import org.traccar.BaseProtocolDecoder; import org.traccar.DeviceSession; import org.traccar.helper.UnitsConverter; import org.traccar.model.Position; import java.net.SocketAddress; 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_EXTENDED_RECORDS = 68; public static final int MSG_SMS_VIA_GPRS = 108; @Override protected Object decode( Channel channel, SocketAddress remoteAddress, Object msg) throws Exception { ChannelBuffer buf = (ChannelBuffer) 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(); position.setProtocol(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) { buf.readUnsignedShort(); // event } else { buf.readUnsignedByte(); // event } // 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(); position.set(Position.PREFIX_IO + id, buf.readUnsignedByte()); } // Read 2 byte data cnt = buf.readUnsignedByte(); for (int j = 0; j < cnt; j++) { int id = type == MSG_EXTENDED_RECORDS ? buf.readUnsignedShort() : buf.readUnsignedByte(); position.set(Position.PREFIX_IO + id, buf.readUnsignedShort()); } // Read 4 byte data cnt = buf.readUnsignedByte(); for (int j = 0; j < cnt; j++) { int id = type == MSG_EXTENDED_RECORDS ? buf.readUnsignedShort() : buf.readUnsignedByte(); position.set(Position.PREFIX_IO + id, buf.readUnsignedInt()); } // Read 8 byte data cnt = buf.readUnsignedByte(); for (int j = 0; j < cnt; j++) { int id = type == MSG_EXTENDED_RECORDS ? buf.readUnsignedShort() : buf.readUnsignedByte(); position.set(Position.PREFIX_IO + id, buf.readLong()); } positions.add(position); } if (channel != null) { byte[] response = {0x00, 0x02, 0x64, 0x01, 0x13, (byte) 0xbc}; channel.write(ChannelBuffers.wrappedBuffer(response)); // acknowledgement } return positions; } return null; } }