From f8ad64b0dc20c3612bf76ad029d852fc390ceb2f Mon Sep 17 00:00:00 2001 From: Anton Tananaev Date: Fri, 26 May 2017 06:34:39 +1200 Subject: Implement GPS056 protocol --- src/org/traccar/protocol/Gps056FrameDecoder.java | 43 +++++++ src/org/traccar/protocol/Gps056Protocol.java | 43 +++++++ .../traccar/protocol/Gps056ProtocolDecoder.java | 135 +++++++++++++++++++++ 3 files changed, 221 insertions(+) create mode 100644 src/org/traccar/protocol/Gps056FrameDecoder.java create mode 100644 src/org/traccar/protocol/Gps056Protocol.java create mode 100644 src/org/traccar/protocol/Gps056ProtocolDecoder.java (limited to 'src/org') diff --git a/src/org/traccar/protocol/Gps056FrameDecoder.java b/src/org/traccar/protocol/Gps056FrameDecoder.java new file mode 100644 index 000000000..7adfddd07 --- /dev/null +++ b/src/org/traccar/protocol/Gps056FrameDecoder.java @@ -0,0 +1,43 @@ +/* + * Copyright 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.channel.Channel; +import org.jboss.netty.channel.ChannelHandlerContext; +import org.jboss.netty.handler.codec.frame.FrameDecoder; + +import java.nio.charset.StandardCharsets; + +public class Gps056FrameDecoder extends FrameDecoder { + + private static final int MESSAGE_HEADER = 4; + + @Override + protected Object decode( + ChannelHandlerContext ctx, Channel channel, ChannelBuffer buf) throws Exception { + + if (buf.readableBytes() >= MESSAGE_HEADER) { + int length = Integer.parseInt(buf.toString(2, 2, StandardCharsets.US_ASCII)) + 5; + if (buf.readableBytes() >= length) { + return buf.readBytes(length); + } + } + + return null; + } + +} diff --git a/src/org/traccar/protocol/Gps056Protocol.java b/src/org/traccar/protocol/Gps056Protocol.java new file mode 100644 index 000000000..62d185cfc --- /dev/null +++ b/src/org/traccar/protocol/Gps056Protocol.java @@ -0,0 +1,43 @@ +/* + * Copyright 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.bootstrap.ServerBootstrap; +import org.jboss.netty.channel.ChannelPipeline; +import org.traccar.BaseProtocol; +import org.traccar.CharacterDelimiterFrameDecoder; +import org.traccar.TrackerServer; + +import java.util.List; + +public class Gps056Protocol extends BaseProtocol { + + public Gps056Protocol() { + super("gps056"); + } + + @Override + public void initTrackerServers(List serverList) { + serverList.add(new TrackerServer(new ServerBootstrap(), getName()) { + @Override + protected void addSpecificHandlers(ChannelPipeline pipeline) { + pipeline.addLast("frameDecoder", new Gps056FrameDecoder()); + pipeline.addLast("objectDecoder", new Gps056ProtocolDecoder(Gps056Protocol.this)); + } + }); + } + +} diff --git a/src/org/traccar/protocol/Gps056ProtocolDecoder.java b/src/org/traccar/protocol/Gps056ProtocolDecoder.java new file mode 100644 index 000000000..2d4f6479a --- /dev/null +++ b/src/org/traccar/protocol/Gps056ProtocolDecoder.java @@ -0,0 +1,135 @@ +/* + * Copyright 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.*; +import org.traccar.model.Position; + +import java.net.SocketAddress; +import java.nio.charset.StandardCharsets; + +public class Gps056ProtocolDecoder extends BaseProtocolDecoder { + + public Gps056ProtocolDecoder(Gps056Protocol protocol) { + super(protocol); + } + + private static void sendResponse(Channel channel, String type, String imei, ChannelBuffer content) { + if (channel != null) { + ChannelBuffer response = ChannelBuffers.dynamicBuffer(); + String header = "*" + type + imei; + response.writeBytes(header.getBytes(StandardCharsets.US_ASCII)); + if (content != null) { + response.writeBytes(content); + } + response.writeByte('#'); + channel.write(response); + } + } + + private static double decodeCoordinate(ChannelBuffer buf) { + double degrees = buf.getUnsignedShort(buf.readerIndex()) / 100; + double minutes = buf.readUnsignedShort() % 100 + buf.readUnsignedShort() * 0.0001; + degrees += minutes / 60; + byte hemisphere = buf.readByte(); + if (hemisphere == 'S' || hemisphere == 'W') { + degrees = -degrees; + } + return degrees; + } + + private static void decodeStatus(ChannelBuffer buf, Position position) { + + position.set(Position.KEY_INPUT, buf.readUnsignedByte()); + position.set(Position.KEY_OUTPUT, buf.readUnsignedByte()); + + position.set(Position.PREFIX_ADC + 1, ChannelBuffers.swapShort(buf.readShort()) * 5.06); // mV + + position.set(Position.KEY_SATELLITES, buf.readUnsignedByte()); + position.set(Position.KEY_RSSI, buf.readUnsignedByte()); + + } + + @Override + protected Object decode( + Channel channel, SocketAddress remoteAddress, Object msg) throws Exception { + + ChannelBuffer buf = (ChannelBuffer) msg; + + buf.skipBytes(2); // header + buf.skipBytes(2); // length + + String type = buf.readBytes(7).toString(StandardCharsets.US_ASCII); + String imei = buf.readBytes(15).toString(StandardCharsets.US_ASCII); + + DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, imei); + if (deviceSession == null) { + return null; + } + + if (type.startsWith("LOGN")) { + + sendResponse(channel, "LGSA" + type.substring(4), imei, + ChannelBuffers.copiedBuffer("1", StandardCharsets.US_ASCII)); + + } else if (type.startsWith("GPSL")) { + + Position position = new Position(); + position.setProtocol(getProtocolName()); + position.setDeviceId(deviceSession.getDeviceId()); + + DateBuilder dateBuilder = new DateBuilder() + .setDateReverse(buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte()) + .setTime(buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte()); + + position.setValid(true); + position.setTime(dateBuilder.getDate()); + position.setLatitude(decodeCoordinate(buf)); + position.setLongitude(decodeCoordinate(buf)); + position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedByte())); + position.setCourse(buf.readUnsignedShort()); + + decodeStatus(buf, position); + + sendResponse(channel, "GPSA" + type.substring(4), imei, buf.readBytes(2)); + + return position; + + } else if (type.startsWith("SYNC")) { + + Position position = new Position(); + position.setProtocol(getProtocolName()); + position.setDeviceId(deviceSession.getDeviceId()); + + getLastLocation(position, null); + + decodeStatus(buf, position); + + sendResponse(channel, "SYSA" + type.substring(4), imei, null); + + return position; + + } + + return null; + } + +} -- cgit v1.2.3