From 7291f66746f9d18387afb523818906a2ee635b82 Mon Sep 17 00:00:00 2001 From: Anton Tananaev Date: Fri, 25 Jan 2019 23:05:30 -0800 Subject: Implement Satsol Sat-Lite protocol --- src/org/traccar/protocol/SatsolProtocol.java | 37 ++++++++ .../traccar/protocol/SatsolProtocolDecoder.java | 104 +++++++++++++++++++++ 2 files changed, 141 insertions(+) create mode 100644 src/org/traccar/protocol/SatsolProtocol.java create mode 100644 src/org/traccar/protocol/SatsolProtocolDecoder.java (limited to 'src') diff --git a/src/org/traccar/protocol/SatsolProtocol.java b/src/org/traccar/protocol/SatsolProtocol.java new file mode 100644 index 000000000..cd8f33b96 --- /dev/null +++ b/src/org/traccar/protocol/SatsolProtocol.java @@ -0,0 +1,37 @@ +/* + * Copyright 2019 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.handler.codec.LengthFieldBasedFrameDecoder; +import org.traccar.BaseProtocol; +import org.traccar.PipelineBuilder; +import org.traccar.TrackerServer; + +import java.nio.ByteOrder; + +public class SatsolProtocol extends BaseProtocol { + + public SatsolProtocol() { + addServer(new TrackerServer(false, getName()) { + @Override + protected void addProtocolHandlers(PipelineBuilder pipeline) { + pipeline.addLast(new LengthFieldBasedFrameDecoder(ByteOrder.BIG_ENDIAN, 1400, 8, 2, 0, 0, true)); + pipeline.addLast(new SatsolProtocolDecoder(SatsolProtocol.this)); + } + }); + } + +} diff --git a/src/org/traccar/protocol/SatsolProtocolDecoder.java b/src/org/traccar/protocol/SatsolProtocolDecoder.java new file mode 100644 index 000000000..e9e8e4c56 --- /dev/null +++ b/src/org/traccar/protocol/SatsolProtocolDecoder.java @@ -0,0 +1,104 @@ +/* + * Copyright 2019 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.BitUtil; +import org.traccar.helper.Checksum; +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 SatsolProtocolDecoder extends BaseProtocolDecoder { + + public SatsolProtocolDecoder(Protocol protocol) { + super(protocol); + } + + @Override + protected Object decode( + Channel channel, SocketAddress remoteAddress, Object msg) throws Exception { + + ByteBuf buf = (ByteBuf) msg; + + buf.readUnsignedShortLE(); // checksum + buf.readUnsignedShortLE(); // preamble + long id = buf.readUnsignedIntLE(); + buf.readUnsignedShortLE(); // length + + DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, String.valueOf(id)); + if (deviceSession == null) { + return null; + } + + List positions = new LinkedList<>(); + + while (buf.isReadable()) { + + buf.readUnsignedShortLE(); // checksum + buf.readUnsignedShortLE(); // checksum + buf.readUnsignedShortLE(); // type + int length = buf.readUnsignedShortLE(); + + Position position = new Position(getProtocolName()); + position.setDeviceId(deviceSession.getDeviceId()); + + position.setTime(new Date(buf.readUnsignedIntLE() * 1000)); + position.setLongitude(buf.readUnsignedIntLE() * 0.000001); + position.setLatitude(buf.readUnsignedIntLE() * 0.000001); + position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedShortLE())); + position.setAltitude(buf.readShortLE()); + position.setCourse(buf.readUnsignedShortLE()); + position.setValid(buf.readUnsignedByte() > 0); + + position.set(Position.KEY_SATELLITES, buf.readUnsignedByte()); + position.set(Position.KEY_EVENT, buf.readUnsignedByte()); + + if (BitUtil.check(buf.readUnsignedByte(), 0)) { + position.set(Position.KEY_ARCHIVE, true); + } + + positions.add(position); + + buf.skipBytes(length); + + } + + if (channel != null) { + ByteBuf response = Unpooled.buffer(); + buf.writeShortLE(0); + buf.writeShortLE(0x4CBF); // preamble + buf.writeIntLE((int) id); + buf.writeShortLE(0); + buf.setShortLE(0, Checksum.crc16( + Checksum.CRC16_CCITT_FALSE, response.nioBuffer(2, response.readableBytes() - 2))); + channel.writeAndFlush(new NetworkMessage(response, remoteAddress)); + } + + return positions; + } + +} -- cgit v1.2.3