From 455ee3287248ba8d5e479399b4e39e8956c99bec Mon Sep 17 00:00:00 2001 From: Anton Tananaev Date: Wed, 3 Jun 2020 23:42:43 -0700 Subject: Implement Niot protocol --- .../java/org/traccar/protocol/NiotProtocol.java | 35 +++++++ .../org/traccar/protocol/NiotProtocolDecoder.java | 102 +++++++++++++++++++++ 2 files changed, 137 insertions(+) create mode 100644 src/main/java/org/traccar/protocol/NiotProtocol.java create mode 100644 src/main/java/org/traccar/protocol/NiotProtocolDecoder.java (limited to 'src/main/java/org/traccar/protocol') diff --git a/src/main/java/org/traccar/protocol/NiotProtocol.java b/src/main/java/org/traccar/protocol/NiotProtocol.java new file mode 100644 index 000000000..b57b18a3a --- /dev/null +++ b/src/main/java/org/traccar/protocol/NiotProtocol.java @@ -0,0 +1,35 @@ +/* + * Copyright 2020 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; + +public class NiotProtocol extends BaseProtocol { + + public NiotProtocol() { + addServer(new TrackerServer(false, getName()) { + @Override + protected void addProtocolHandlers(PipelineBuilder pipeline) { + pipeline.addLast(new LengthFieldBasedFrameDecoder(1024, 3, 2)); + pipeline.addLast(new NiotProtocolDecoder(NiotProtocol.this)); + } + }); + } + +} diff --git a/src/main/java/org/traccar/protocol/NiotProtocolDecoder.java b/src/main/java/org/traccar/protocol/NiotProtocolDecoder.java new file mode 100644 index 000000000..81b6efc91 --- /dev/null +++ b/src/main/java/org/traccar/protocol/NiotProtocolDecoder.java @@ -0,0 +1,102 @@ +/* + * Copyright 2020 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.ByteBufUtil; +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.BcdUtil; +import org.traccar.helper.Checksum; +import org.traccar.helper.DateBuilder; +import org.traccar.helper.UnitsConverter; +import org.traccar.model.Position; + +import java.net.SocketAddress; + +public class NiotProtocolDecoder extends BaseProtocolDecoder { + + public NiotProtocolDecoder(Protocol protocol) { + super(protocol); + } + + public static final int MSG_RESPONSE = 0x21; + public static final int MSG_POSITION_DATA = 0x80; + + private void sendResponse(Channel channel, SocketAddress remoteAddress, int type, int checksum) { + if (channel != null) { + ByteBuf response = Unpooled.buffer(); + response.writeShort(0x5858); // header + response.writeByte(MSG_RESPONSE); + response.writeShort(5); // length + response.writeByte(checksum); + response.writeByte(type); + response.writeByte(0); // subtype + response.writeByte(Checksum.xor(response.nioBuffer(2, response.writerIndex()))); + response.writeByte(0x0D); + channel.writeAndFlush(new NetworkMessage(response, remoteAddress)); + } + } + + @Override + protected Object decode( + Channel channel, SocketAddress remoteAddress, Object msg) throws Exception { + + ByteBuf buf = (ByteBuf) msg; + + buf.skipBytes(2); // header + int type = buf.readUnsignedByte(); + buf.readUnsignedShort(); // length + + String imei = ByteBufUtil.hexDump(buf.readSlice(8)).substring(1); + + sendResponse(channel, remoteAddress, type, buf.getByte(buf.writerIndex() - 2)); + + if (type == MSG_POSITION_DATA) { + + Position position = new Position(getProtocolName()); + + DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, imei); + if (deviceSession == null) { + return null; + } + position.setDeviceId(deviceSession.getDeviceId()); + + DateBuilder dateBuilder = new DateBuilder() + .setYear(BcdUtil.readInteger(buf, 2)) + .setMonth(BcdUtil.readInteger(buf, 2)) + .setDay(BcdUtil.readInteger(buf, 2)) + .setHour(BcdUtil.readInteger(buf, 2)) + .setMinute(BcdUtil.readInteger(buf, 2)) + .setSecond(BcdUtil.readInteger(buf, 2)); + position.setTime(dateBuilder.getDate()); + + position.setLatitude(BcdUtil.readCoordinate(buf)); + position.setLongitude(BcdUtil.readCoordinate(buf)); + position.setSpeed(UnitsConverter.knotsFromKph(BcdUtil.readInteger(buf, 4))); + position.setCourse(BcdUtil.readInteger(buf, 4)); + + return position; + } + + return null; + } + +} -- cgit v1.2.3