From 19f170b8c147935c8df4044a4fa3b6456baad6c7 Mon Sep 17 00:00:00 2001 From: Anton Tananaev Date: Thu, 23 Dec 2021 23:00:47 -0800 Subject: Add Digital Systems DSF22 protocol --- .../org/traccar/protocol/Dsf22FrameDecoder.java | 44 +++++++++++ .../java/org/traccar/protocol/Dsf22Protocol.java | 40 ++++++++++ .../org/traccar/protocol/Dsf22ProtocolDecoder.java | 90 ++++++++++++++++++++++ 3 files changed, 174 insertions(+) create mode 100644 src/main/java/org/traccar/protocol/Dsf22FrameDecoder.java create mode 100644 src/main/java/org/traccar/protocol/Dsf22Protocol.java create mode 100644 src/main/java/org/traccar/protocol/Dsf22ProtocolDecoder.java (limited to 'src/main/java') diff --git a/src/main/java/org/traccar/protocol/Dsf22FrameDecoder.java b/src/main/java/org/traccar/protocol/Dsf22FrameDecoder.java new file mode 100644 index 000000000..388c97f85 --- /dev/null +++ b/src/main/java/org/traccar/protocol/Dsf22FrameDecoder.java @@ -0,0 +1,44 @@ +/* + * Copyright 2021 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.channel.Channel; +import io.netty.channel.ChannelHandlerContext; +import org.traccar.BaseFrameDecoder; + +public class Dsf22FrameDecoder extends BaseFrameDecoder { + + @Override + protected Object decode( + ChannelHandlerContext ctx, Channel channel, ByteBuf buf) throws Exception { + + if (buf.readableBytes() < 21) { + return null; + } + + int count = buf.getUnsignedByte(buf.readerIndex() + 4); + + int length = 2 + 2 + 1 + count * (4 + 4 + 4 + 1 + 2 + 1); + + if (buf.readableBytes() >= length) { + return buf.readRetainedSlice(length); + } else { + return null; + } + } + +} diff --git a/src/main/java/org/traccar/protocol/Dsf22Protocol.java b/src/main/java/org/traccar/protocol/Dsf22Protocol.java new file mode 100644 index 000000000..bffc3e419 --- /dev/null +++ b/src/main/java/org/traccar/protocol/Dsf22Protocol.java @@ -0,0 +1,40 @@ +/* + * Copyright 2021 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.traccar.BaseProtocol; +import org.traccar.PipelineBuilder; +import org.traccar.TrackerServer; + +public class Dsf22Protocol extends BaseProtocol { + + public Dsf22Protocol() { + addServer(new TrackerServer(false, getName()) { + @Override + protected void addProtocolHandlers(PipelineBuilder pipeline) { + pipeline.addLast(new Dsf22FrameDecoder()); + pipeline.addLast(new Dsf22ProtocolDecoder(Dsf22Protocol.this)); + } + }); + addServer(new TrackerServer(true, getName()) { + @Override + protected void addProtocolHandlers(PipelineBuilder pipeline) { + pipeline.addLast(new Dsf22ProtocolDecoder(Dsf22Protocol.this)); + } + }); + } + +} diff --git a/src/main/java/org/traccar/protocol/Dsf22ProtocolDecoder.java b/src/main/java/org/traccar/protocol/Dsf22ProtocolDecoder.java new file mode 100644 index 000000000..d5a9df7bc --- /dev/null +++ b/src/main/java/org/traccar/protocol/Dsf22ProtocolDecoder.java @@ -0,0 +1,90 @@ +/* + * Copyright 2021 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.BitUtil; +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 Dsf22ProtocolDecoder extends BaseProtocolDecoder { + + public Dsf22ProtocolDecoder(Protocol protocol) { + super(protocol); + } + + @Override + protected Object decode( + Channel channel, SocketAddress remoteAddress, Object msg) throws Exception { + + ByteBuf buf = (ByteBuf) msg; + + buf.skipBytes(2); // header + + String id = ByteBufUtil.hexDump(buf.readSlice(2)); + DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, id); + if (deviceSession == null) { + return null; + } + + List positions = new LinkedList<>(); + int count = buf.readUnsignedByte(); + + for (int i = 0; i < count; i++) { + + Position position = new Position(getProtocolName()); + position.setDeviceId(deviceSession.getDeviceId()); + + position.setValid(true); + position.setLatitude(buf.readInt()); + position.setLongitude(buf.readInt()); + position.setTime(new Date(946684800000L + buf.readUnsignedInt())); + position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedByte())); + + position.set(Position.KEY_FUEL_LEVEL, buf.readUnsignedShort() * 0.001); + + int status = buf.readUnsignedByte(); + position.set(Position.KEY_IGNITION, BitUtil.check(status, 0)); + position.set(Position.PREFIX_IN + 1, BitUtil.check(status, 1)); + position.set(Position.PREFIX_OUT + 1, BitUtil.check(status, 4)); + position.set(Position.KEY_ALARM, BitUtil.check(status, 6) ? Position.ALARM_JAMMING : null); + position.set(Position.KEY_STATUS, status); + + positions.add(position); + + } + + if (channel != null) { + byte[] response = {0x01}; + channel.writeAndFlush(new NetworkMessage(Unpooled.wrappedBuffer(response), remoteAddress)); + } + + return positions; + } + +} -- cgit v1.2.3