/* * Copyright 2014 - 2017 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.BitUtil; import org.traccar.helper.UnitsConverter; import org.traccar.model.CellTower; import org.traccar.model.Network; import org.traccar.model.Position; import java.net.SocketAddress; import java.util.Date; public class EelinkProtocolDecoder extends BaseProtocolDecoder { public EelinkProtocolDecoder(EelinkProtocol protocol) { super(protocol); } public static final int MSG_LOGIN = 0x01; public static final int MSG_GPS = 0x02; public static final int MSG_HEARTBEAT = 0x03; public static final int MSG_ALARM = 0x04; public static final int MSG_STATE = 0x05; public static final int MSG_SMS = 0x06; public static final int MSG_OBD = 0x07; public static final int MSG_DOWNLINK = 0x80; public static final int MSG_DATA = 0x81; public static final int MSG_NORMAL = 0x12; public static final int MSG_WARNING = 0x14; public static final int MSG_REPORT = 0x15; public static final int MSG_COMMAND = 0x16; public static final int MSG_OBD_DATA = 0x17; public static final int MSG_OBD_BODY = 0x18; public static final int MSG_OBD_CODE = 0x19; public static final int MSG_CAMERA_INFO = 0x1E; public static final int MSG_CAMERA_DATA = 0x1F; private void sendResponse(Channel channel, int type, int index) { if (channel != null) { ChannelBuffer response = ChannelBuffers.buffer(7); response.writeByte(0x67); response.writeByte(0x67); // header response.writeByte(type); response.writeShort(2); // length response.writeShort(index); channel.write(response); } } private String decodeAlarm(Short value) { switch (value) { case 0x01: return Position.ALARM_POWER_OFF; case 0x02: return Position.ALARM_SOS; case 0x03: return Position.ALARM_LOW_BATTERY; case 0x04: return Position.ALARM_VIBRATION; case 0x08: case 0x09: return Position.ALARM_GPS_ANTENNA_CUT; case 0x81: return Position.ALARM_LOW_SPEED; case 0x82: return Position.ALARM_OVERSPEED; case 0x83: return Position.ALARM_GEOFENCE_ENTER; case 0x84: return Position.ALARM_GEOFENCE_EXIT; case 0x85: return Position.ALARM_ACCIDENT; case 0x86: return Position.ALARM_FALL_DOWN; default: return null; } } private Position decodeOld(DeviceSession deviceSession, ChannelBuffer buf, int type, int index) { Position position = new Position(); position.setDeviceId(deviceSession.getDeviceId()); position.setProtocol(getProtocolName()); position.set(Position.KEY_INDEX, index); position.setTime(new Date(buf.readUnsignedInt() * 1000)); position.setLatitude(buf.readInt() / 1800000.0); position.setLongitude(buf.readInt() / 1800000.0); position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedByte())); position.setCourse(buf.readUnsignedShort()); position.setNetwork(new Network(CellTower.from( buf.readUnsignedShort(), buf.readUnsignedShort(), buf.readUnsignedShort(), buf.readUnsignedMedium()))); position.setValid((buf.readUnsignedByte() & 0x01) != 0); if (type == MSG_ALARM) { position.set(Position.KEY_ALARM, decodeAlarm(buf.readUnsignedByte())); } if (buf.readableBytes() >= 2 * 5) { int status = buf.readUnsignedShort(); if (BitUtil.check(status, 1)) { position.set(Position.KEY_IGNITION, BitUtil.check(status, 2)); } if (BitUtil.check(status, 7)) { position.set(Position.KEY_CHARGE, BitUtil.check(status, 8)); } position.set(Position.KEY_STATUS, status); position.set(Position.KEY_BATTERY, buf.readUnsignedShort() * 0.001); position.set(Position.KEY_RSSI, buf.readUnsignedShort()); position.set(Position.PREFIX_ADC + 1, buf.readUnsignedShort()); position.set(Position.PREFIX_ADC + 2, buf.readUnsignedShort()); } return position; } private Position decodeNew(DeviceSession deviceSession, ChannelBuffer buf, int index) { Position position = new Position(); position.setDeviceId(deviceSession.getDeviceId()); position.setProtocol(getProtocolName()); position.set(Position.KEY_INDEX, index); position.setTime(new Date(buf.readUnsignedInt() * 1000)); int flags = buf.readUnsignedByte(); if (BitUtil.check(flags, 0)) { position.setLatitude(buf.readInt() / 1800000.0); position.setLongitude(buf.readInt() / 1800000.0); position.setAltitude(buf.readShort()); position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedShort())); position.setCourse(buf.readUnsignedShort()); position.set(Position.KEY_SATELLITES, buf.readUnsignedByte()); } if (BitUtil.check(flags, 1)) { position.setNetwork(new Network(CellTower.from( buf.readUnsignedShort(), buf.readUnsignedShort(), buf.readUnsignedShort(), buf.readUnsignedInt(), buf.readUnsignedByte()))); } if (BitUtil.check(flags, 2)) { buf.skipBytes(7); // bsid1 } if (BitUtil.check(flags, 3)) { buf.skipBytes(7); // bsid2 } if (BitUtil.check(flags, 4)) { buf.skipBytes(7); // bss0 } if (BitUtil.check(flags, 5)) { buf.skipBytes(7); // bss1 } if (BitUtil.check(flags, 6)) { buf.skipBytes(7); // bss2 } return position; } @Override protected Object decode( Channel channel, SocketAddress remoteAddress, Object msg) throws Exception { ChannelBuffer buf = (ChannelBuffer) msg; buf.skipBytes(2); // header int type = buf.readUnsignedByte(); buf.readShort(); // length int index = buf.readUnsignedShort(); if (type != MSG_GPS && type != MSG_DATA) { sendResponse(channel, type, index); } if (type == MSG_LOGIN) { getDeviceSession(channel, remoteAddress, ChannelBuffers.hexDump(buf.readBytes(8)).substring(1)); } else { DeviceSession deviceSession = getDeviceSession(channel, remoteAddress); if (deviceSession == null) { return null; } if (type == MSG_GPS || type == MSG_ALARM || type == MSG_STATE || type == MSG_SMS) { return decodeOld(deviceSession, buf, type, index); } else if (type >= MSG_NORMAL && type <= MSG_OBD_CODE) { return decodeNew(deviceSession, buf, index); } } return null; } }