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authorAnton Tananaev <anton@traccar.org>2024-04-13 08:33:12 -0700
committerAnton Tananaev <anton@traccar.org>2024-04-13 08:33:12 -0700
commit9af6b90e51ff8e2a35fcf52381b9800e508a3edd (patch)
tree0fc6d823a54a0670425899d15fd4c0afb84c7064 /src/main
parent725d738de64bd7df7ec05786baf6590c15a105b9 (diff)
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Implement KR Binary v4 protocol
Diffstat (limited to 'src/main')
-rw-r--r--src/main/java/org/traccar/protocol/SnapperProtocol.java40
-rw-r--r--src/main/java/org/traccar/protocol/SnapperProtocolDecoder.java180
2 files changed, 220 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/protocol/SnapperProtocol.java b/src/main/java/org/traccar/protocol/SnapperProtocol.java
new file mode 100644
index 000000000..2e294eac6
--- /dev/null
+++ b/src/main/java/org/traccar/protocol/SnapperProtocol.java
@@ -0,0 +1,40 @@
+/*
+ * Copyright 2024 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 jakarta.inject.Inject;
+import org.traccar.BaseProtocol;
+import org.traccar.PipelineBuilder;
+import org.traccar.TrackerServer;
+import org.traccar.config.Config;
+
+import java.nio.ByteOrder;
+
+public class SnapperProtocol extends BaseProtocol {
+
+ @Inject
+ public SnapperProtocol(Config config) {
+ addServer(new TrackerServer(config, getName(), false) {
+ @Override
+ protected void addProtocolHandlers(PipelineBuilder pipeline, Config config) {
+ pipeline.addLast(new LengthFieldBasedFrameDecoder(ByteOrder.LITTLE_ENDIAN, 1024, 12, 4, 9, 0, true));
+ pipeline.addLast(new SnapperProtocolDecoder(SnapperProtocol.this));
+ }
+ });
+ }
+
+}
diff --git a/src/main/java/org/traccar/protocol/SnapperProtocolDecoder.java b/src/main/java/org/traccar/protocol/SnapperProtocolDecoder.java
new file mode 100644
index 000000000..3119e347e
--- /dev/null
+++ b/src/main/java/org/traccar/protocol/SnapperProtocolDecoder.java
@@ -0,0 +1,180 @@
+/*
+ * Copyright 2024 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 jakarta.json.Json;
+import jakarta.json.JsonObject;
+import org.traccar.BaseProtocolDecoder;
+import org.traccar.NetworkMessage;
+import org.traccar.Protocol;
+import org.traccar.helper.BitUtil;
+import org.traccar.helper.Checksum;
+import org.traccar.model.Position;
+import org.traccar.session.DeviceSession;
+
+import java.io.StringReader;
+import java.net.SocketAddress;
+import java.nio.ByteBuffer;
+import java.nio.charset.StandardCharsets;
+import java.text.DateFormat;
+import java.text.SimpleDateFormat;
+import java.util.TimeZone;
+
+public class SnapperProtocolDecoder extends BaseProtocolDecoder {
+
+ public SnapperProtocolDecoder(Protocol protocol) {
+ super(protocol);
+ }
+
+ public static final int MSG_HELLO = 0x01;
+ public static final int MSG_SENDING_START = 0x02;
+ public static final int MSG_SENDING_FINISH = 0x03;
+ public static final int MSG_SEND_EVENTS = 0x21;
+ public static final int MSG_SEND_TECH_INFO = 0x23;
+ public static final int MSG_UPDATE_CMS_NUM = 0x24;
+ public static final int MSG_SEND_SYSTEM_INFO = 0x26;
+ public static final int MSG_SEND_USER_PHONE_NUMBERS = 0x31;
+ public static final int MSG_SEND_GPS_DATA = 0x32;
+ public static final int MSG_SEND_LBS_DATA = 0x33;
+ public static final int MSG_SEND_SYSTEM_STATUS = 0x34;
+ public static final int MSG_SEND_TRANSIT_SETTINGS = 0x35;
+ public static final int MSG_GET_SETTINGS = 0x36;
+ public static final int MSG_SEND_CONCATENATED_PACKET = 0x37;
+ public static final int MSG_SEND_DEBUG_INFO = 0x38;
+
+ private void sendResponse(
+ Channel channel, SocketAddress remoteAddress, int index, int type, String answer) {
+
+ if (channel != null) {
+ ByteBuf response = Unpooled.buffer();
+ response.writeByte('K');
+ response.writeByte(3); // protocol version
+ response.writeIntLE(0); // reserved
+ response.writeIntLE(0); // reserved
+ response.writeShortLE(0); // encryption
+ response.writeIntLE(answer.length());
+ response.writeShortLE(index);
+ response.writeByte(Checksum.sum(ByteBuffer.wrap(answer.getBytes(StandardCharsets.US_ASCII))));
+ response.writeByte(type);
+ response.writeCharSequence(answer, StandardCharsets.US_ASCII);
+ channel.writeAndFlush(new NetworkMessage(response, remoteAddress));
+ }
+ }
+
+ @Override
+ protected Object decode(
+ Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+ ByteBuf buf = (ByteBuf) msg;
+
+ buf.readUnsignedByte(); // header
+ buf.readUnsignedByte(); // protocol version
+ buf.readUnsignedIntLE(); // system bonus identifier
+
+ String serialNumber = String.valueOf(buf.readUnsignedIntLE());
+ DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, serialNumber);
+ if (deviceSession == null) {
+ return null;
+ }
+
+ buf.readUnsignedShortLE(); // encryption
+ buf.readUnsignedIntLE(); // length
+ buf.readUnsignedByte(); // flags
+ buf.readUnsignedMediumLE(); // reserved
+ int index = buf.readUnsignedShortLE();
+ buf.readUnsignedByte(); // checksum
+ int type = buf.readUnsignedShortLE();
+
+ if (type == MSG_HELLO) {
+ sendResponse(channel, remoteAddress, index, type, "hello");
+ } else {
+ sendResponse(channel, remoteAddress, index, type, "OK");
+ }
+
+ Position position = new Position(getProtocolName());
+ position.setDeviceId(deviceSession.getDeviceId());
+
+ if (type == MSG_SEND_EVENTS) {
+
+ position.set(Position.KEY_EVENT, buf.readUnsignedByte());
+ buf.readUnsignedByte(); // info 1
+ buf.readUnsignedByte(); // info 2
+ getLastLocation(position, null); // TODO read timestamp
+ return position;
+
+ } else if (type == MSG_SEND_TECH_INFO) {
+
+ buf.readUnsignedByte(); // index
+ int subtype = buf.readUnsignedByte();
+ switch (subtype) {
+ case 0x00:
+ position.set(Position.KEY_POWER, buf.readUnsignedByte() * 0.1);
+ position.set(Position.KEY_DEVICE_TEMP, buf.readByte());
+ position.set(Position.KEY_RSSI, buf.readUnsignedByte());
+ break;
+ case 0x01:
+ position.set("interiorTemp", buf.readByte());
+ position.set("engineTemp", buf.readByte());
+ default:
+ break;
+ }
+ getLastLocation(position, null);
+ return position;
+
+ } else if (type == MSG_SEND_GPS_DATA) {
+
+ String content = buf.readCharSequence(buf.readableBytes(), StandardCharsets.US_ASCII).toString();
+ JsonObject json = Json.createReader(new StringReader(content)).readObject();
+
+ //{"f":"DE","t":"092304.01","d":"110813","la":"5117.6370",
+ // "lo":"01655.3959","a":"00166.6","s":"","c":"","sv":"08","p":"01.6"}
+
+ DateFormat dateFormat = new SimpleDateFormat("ddMMyyHHmmss.SS");
+ dateFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
+ position.setTime(dateFormat.parse(json.getString("d") + json.getString("t")));
+
+ String lat = json.getString("la");
+ position.setLatitude(Integer.parseInt(lat.substring(0, 2)) + Double.parseDouble(lat.substring(2)) / 60);
+ String lon = json.getString("lo");
+ position.setLongitude(Integer.parseInt(lon.substring(0, 3)) + Double.parseDouble(lon.substring(3)) / 60);
+
+ int flags = Integer.parseInt(json.getString("f"));
+ position.setValid(BitUtil.check(flags, 1));
+ if (!BitUtil.check(flags, 6)) {
+ position.setLatitude(-position.getLatitude());
+ }
+ if (!BitUtil.check(flags, 7)) {
+ position.setLongitude(-position.getLongitude());
+ }
+
+ position.setAltitude(Double.parseDouble(json.getString("a")));
+ position.setSpeed(Double.parseDouble(json.getString("s")));
+ position.setCourse(Double.parseDouble(json.getString("c")));
+
+ position.set(Position.KEY_SATELLITES, Integer.parseInt(json.getString("sv")));
+
+ return position;
+
+ }
+
+
+ return null;
+ }
+
+}