diff options
Diffstat (limited to 'src/org/traccar/protocol/EelinkProtocolDecoder.java')
| -rw-r--r-- | src/org/traccar/protocol/EelinkProtocolDecoder.java | 200 |
1 files changed, 200 insertions, 0 deletions
diff --git a/src/org/traccar/protocol/EelinkProtocolDecoder.java b/src/org/traccar/protocol/EelinkProtocolDecoder.java new file mode 100644 index 000000000..6c3230050 --- /dev/null +++ b/src/org/traccar/protocol/EelinkProtocolDecoder.java @@ -0,0 +1,200 @@ +/* + * Copyright 2014 Anton Tananaev (anton.tananaev@gmail.com) + * + * 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 java.util.Calendar; +import java.util.Date; +import java.util.TimeZone; +import org.jboss.netty.buffer.ChannelBuffer; +import org.jboss.netty.buffer.ChannelBuffers; +import org.jboss.netty.channel.Channel; +import org.jboss.netty.channel.ChannelHandlerContext; +import org.traccar.BaseProtocolDecoder; +import org.traccar.ServerManager; +import org.traccar.helper.ChannelBufferTools; +import org.traccar.helper.Crc; +import org.traccar.helper.Log; +import org.traccar.model.ExtendedInfoFormatter; +import org.traccar.model.Position; + +public class EelinkProtocolDecoder extends BaseProtocolDecoder { + + public EelinkProtocolDecoder(ServerManager serverManager) { + super(serverManager); + } + + private String readImei(ChannelBuffer buf) { + int b = buf.readUnsignedByte(); + StringBuilder imei = new StringBuilder(); + imei.append(b & 0x0F); + for (int i = 0; i < 7; i++) { + b = buf.readUnsignedByte(); + imei.append((b & 0xF0) >> 4); + imei.append(b & 0x0F); + } + return imei.toString(); + } + + private static final int MSG_LOGIN = 0x01; + private static final int MSG_GPS = 0x02; + private static final int MSG_HEARTBEAT = 0x03; + private static final int MSG_ALARM = 0x04; + private static final int MSG_STATE = 0x05; + private static final int MSG_SMS = 0x06; + private static final int MSG_OBD = 0x07; + private static final int MSG_INTERACTIVE = 0x80; + private static final int MSG_DATA = 0x81; + + private Long deviceId; + + 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); + } + } + + @Override + protected Object decode( + ChannelHandlerContext ctx, Channel channel, 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) { + String imei = ChannelBufferTools.readHexString(buf, 16).substring(1); + try { + deviceId = getDataManager().getDeviceByImei(imei).getId(); + } catch(Exception error) { + Log.warning("Unknown device - " + imei); + } + } + + else if (type == MSG_GPS || + type == MSG_ALARM || + type == MSG_STATE || + type == MSG_SMS) { + + // Create new position + Position position = new Position(); + position.setDeviceId(deviceId); + + ExtendedInfoFormatter extendedInfo = new ExtendedInfoFormatter("eelink"); + extendedInfo.set("index", index); + + // Location + position.setTime(new Date(buf.readUnsignedInt() * 1000)); + position.setLatitude(buf.readInt() / 1800000.0); + position.setLatitude(buf.readInt() / 1800000.0); + position.setSpeed(buf.readUnsignedByte() * 0.539957); + position.setCourse((double) buf.readUnsignedShort()); + position.setAltitude(0.0); + + // Cell + extendedInfo.set("cell", ChannelBufferTools.readHexString(buf, 18)); + + // Validity + position.setValid((buf.readUnsignedByte() & 0x01) != 0); + + if (type == MSG_ALARM) { + extendedInfo.set("alarm", buf.readUnsignedByte()); + } + + if (type == MSG_STATE) { + extendedInfo.set("status", buf.readUnsignedByte()); + } + + return position; + } + + /* + if (type == MSG_HEARTBEAT) { + if (channel != null) { + byte[] response = {0x54, 0x68, 0x1A, 0x0D, 0x0A}; + channel.write(ChannelBuffers.wrappedBuffer(response)); + } + } + + else if (type == MSG_DATA) { + + // Create new position + Position position = new Position(); + ExtendedInfoFormatter extendedInfo = new ExtendedInfoFormatter("gt02"); + extendedInfo.set("index", index); + + // Get device id + try { + position.setDeviceId(getDataManager().getDeviceByImei(imei).getId()); + } catch(Exception error) { + Log.warning("Unknown device - " + imei); + } + + // Date and time + Calendar time = Calendar.getInstance(TimeZone.getTimeZone("UTC")); + time.clear(); + time.set(Calendar.YEAR, 2000 + buf.readUnsignedByte()); + time.set(Calendar.MONTH, buf.readUnsignedByte() - 1); + time.set(Calendar.DAY_OF_MONTH, buf.readUnsignedByte()); + time.set(Calendar.HOUR_OF_DAY, buf.readUnsignedByte()); + time.set(Calendar.MINUTE, buf.readUnsignedByte()); + time.set(Calendar.SECOND, buf.readUnsignedByte()); + position.setTime(time.getTime()); + + // Latitude + double latitude = buf.readUnsignedInt() / (60.0 * 30000.0); + + // Longitude + double longitude = buf.readUnsignedInt() / (60.0 * 30000.0); + + // Speed + position.setSpeed((double) buf.readUnsignedByte()); + + // Course + position.setCourse((double) buf.readUnsignedShort()); + + buf.skipBytes(3); // reserved + + // Flags + long flags = buf.readUnsignedInt(); + position.setValid((flags & 0x1) == 0x1); + if ((flags & 0x2) == 0) latitude = -latitude; + if ((flags & 0x4) == 0) longitude = -longitude; + + position.setLatitude(latitude); + position.setLongitude(longitude); + position.setAltitude(0.0); + + position.setExtendedInfo(extendedInfo.toString()); + return position; + }*/ + + return null; + } + +} |