From 040792aac03882874bffc6d2252e6380b07a3c9f Mon Sep 17 00:00:00 2001
From: Anton Tananaev <anton.tananaev@gmail.com>
Date: Mon, 17 May 2021 22:29:41 -0700
Subject: Start UUX protocol implementation

---
 .../org/traccar/protocol/UuxProtocolDecoder.java   | 94 ++++++++++++++++++++++
 1 file changed, 94 insertions(+)
 create mode 100644 src/main/java/org/traccar/protocol/UuxProtocolDecoder.java

(limited to 'src/main/java/org/traccar/protocol/UuxProtocolDecoder.java')

diff --git a/src/main/java/org/traccar/protocol/UuxProtocolDecoder.java b/src/main/java/org/traccar/protocol/UuxProtocolDecoder.java
new file mode 100644
index 000000000..8c00a8860
--- /dev/null
+++ b/src/main/java/org/traccar/protocol/UuxProtocolDecoder.java
@@ -0,0 +1,94 @@
+/*
+ * 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.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.DateBuilder;
+import org.traccar.model.Position;
+
+import java.net.SocketAddress;
+import java.nio.charset.StandardCharsets;
+import java.util.Calendar;
+
+public class UuxProtocolDecoder extends BaseProtocolDecoder {
+
+    public UuxProtocolDecoder(Protocol protocol) {
+        super(protocol);
+    }
+
+    public static final int MSG_IMMOBILIZER = 0x9E;
+    public static final int MSG_ACK = 0xD0;
+    public static final int MSG_NACK = 0xF0;
+
+    private void sendResponse(Channel channel, int productCode, int protocolVersion, int type) {
+        if (channel != null) {
+            ByteBuf response = Unpooled.buffer();
+            response.writeShort(productCode);
+            response.writeByte(protocolVersion);
+            response.writeByte(1); // length
+            response.writeByte(type);
+            channel.writeAndFlush(new NetworkMessage(response, channel.remoteAddress()));
+        }
+    }
+
+    @Override
+    protected Object decode(
+            Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+        ByteBuf buf = (ByteBuf) msg;
+
+        int productCode = buf.readUnsignedShort();
+        int protocolVersion = buf.readUnsignedByte();
+        buf.readUnsignedByte(); // length
+        int type = buf.readUnsignedByte();
+
+        String vehicleId = buf.readCharSequence(10, StandardCharsets.US_ASCII).toString();
+        DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, vehicleId);
+        if (deviceSession == null) {
+            sendResponse(channel, productCode, protocolVersion, MSG_NACK);
+            return null;
+        }
+
+        if (type == MSG_IMMOBILIZER) {
+
+            Position position = new Position(getProtocolName());
+            position.setDeviceId(deviceSession.getDeviceId());
+
+            DateBuilder dateBuilder = new DateBuilder()
+                    .setDate(Calendar.getInstance().get(Calendar.YEAR), buf.readUnsignedByte(), buf.readUnsignedByte())
+                    .setTime(buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte());
+
+            getLastLocation(position, dateBuilder.getDate());
+
+            position.set("companyId", buf.readCharSequence(6, StandardCharsets.US_ASCII).toString());
+            position.set("tripId", buf.readUnsignedShort());
+
+            return position;
+
+        }
+
+        sendResponse(channel, productCode, protocolVersion, MSG_ACK);
+
+        return null;
+    }
+
+}
-- 
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