Implement Naviset protocol

setup/default.xml

@@ -270,5 +270,6 @@
     <entry key='mictrack.port'>5191</entry>
     <entry key='plugin.port'>5192</entry>
     <entry key='leafspy.port'>5193</entry>
+    <entry key='naviset.port'>5194</entry>
 
 </properties>

src/main/java/org/traccar/protocol/NavisetFrameDecoder.java

@@ -0,0 +1,39 @@
+/*
+ * Copyright 2019 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;
+import org.traccar.helper.BitUtil;
+
+public class NavisetFrameDecoder extends BaseFrameDecoder {
+
+    @Override
+    protected Object decode(
+            ChannelHandlerContext ctx, Channel channel, ByteBuf buf) throws Exception {
+
+        int length = 2 + BitUtil.to(buf.getUnsignedShortLE(buf.readerIndex()), 12) + 2;
+
+        if (buf.readableBytes() >= length) {
+            return buf.readRetainedSlice(length);
+        }
+
+        return null;
+    }
+
+}

src/main/java/org/traccar/protocol/NavisetProtocol.java

@@ -0,0 +1,34 @@
+/*
+ * Copyright 2019 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 NavisetProtocol extends BaseProtocol {
+
+    public NavisetProtocol() {
+        addServer(new TrackerServer(false, getName()) {
+            @Override
+            protected void addProtocolHandlers(PipelineBuilder pipeline) {
+                pipeline.addLast(new NavisetFrameDecoder());
+                pipeline.addLast(new NavisetProtocolDecoder(NavisetProtocol.this));
+            }
+        });
+    }
+
+}

src/main/java/org/traccar/protocol/NavisetProtocolDecoder.java

@@ -0,0 +1,94 @@
+/*
+ * Copyright 2019 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.BitUtil;
+import org.traccar.helper.UnitsConverter;
+import org.traccar.model.Position;
+
+import java.net.SocketAddress;
+import java.nio.charset.StandardCharsets;
+import java.util.Date;
+
+public class NavisetProtocolDecoder extends BaseProtocolDecoder {
+
+    public NavisetProtocolDecoder(Protocol protocol) {
+        super(protocol);
+    }
+
+    public static final int MSG_HEADER = 0b00;
+    public static final int MSG_DATA = 0b01;
+    public static final int MSG_RESPONSE = 0b10;
+    public static final int MSG_RESERVE = 0b11;
+
+    @Override
+    protected Object decode(
+            Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+        ByteBuf buf = (ByteBuf) msg;
+
+        if (channel != null) {
+            ByteBuf response = Unpooled.buffer();
+            response.writeByte(0x01);
+            response.writeShortLE(buf.getUnsignedShortLE(buf.writerIndex() - 2));
+            channel.writeAndFlush(new NetworkMessage(response, channel.remoteAddress()));
+        }
+
+        int length = buf.readUnsignedShortLE();
+        BitUtil.between(length, 12, 14); // version
+        int type = BitUtil.between(length, 14, 16);
+        buf.readUnsignedShortLE(); // device number
+
+        if (type == MSG_HEADER) {
+
+            getDeviceSession(channel, remoteAddress, buf.readCharSequence(15, StandardCharsets.US_ASCII).toString());
+
+        } else if (type == MSG_DATA) {
+
+            DeviceSession deviceSession = getDeviceSession(channel, remoteAddress);
+            if (deviceSession == null) {
+                return null;
+            }
+
+            Position position = new Position(getProtocolName());
+            position.setDeviceId(deviceSession.getDeviceId());
+
+            buf.readUnsignedByte(); // mask
+            position.set(Position.KEY_INDEX, buf.readUnsignedShortLE());
+            position.set(Position.KEY_STATUS, buf.readUnsignedByte());
+
+            position.setValid(true);
+            position.setTime(new Date(buf.readUnsignedIntLE() * 1000));
+            position.setLatitude(buf.readUnsignedIntLE() * 0.000001);
+            position.setLongitude(buf.readUnsignedIntLE() * 0.000001);
+            position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedShortLE() * 0.1));
+
+            // additional data
+
+            return position;
+        }
+
+        return null;
+    }
+
+}

src/test/java/org/traccar/protocol/NavisetFrameDecoderTest.java

@@ -0,0 +1,19 @@
+package org.traccar.protocol;
+
+import org.junit.Test;
+import org.traccar.ProtocolTest;
+
+public class NavisetFrameDecoderTest extends ProtocolTest {
+
+    @Test
+    public void testDecode() throws Exception {
+
+        NavisetFrameDecoder decoder = new NavisetFrameDecoder();
+
+        verifyFrame(
+                binary("1310e4073836383230343030353935383436362a060716"),
+                decoder.decode(null, null, binary("1310e4073836383230343030353935383436362a060716")));
+
+    }
+
+}

src/test/java/org/traccar/protocol/NavisetProtocolDecoderTest.java

@@ -0,0 +1,18 @@
+package org.traccar.protocol;
+
+import org.junit.Test;
+import org.traccar.ProtocolTest;
+
+public class NavisetProtocolDecoderTest extends ProtocolTest {
+
+    @Test
+    public void testDecode() throws Exception {
+
+        NavisetProtocolDecoder decoder = new NavisetProtocolDecoder(null);
+
+        verifyNull(decoder, binary(
+                "1310e4073836383230343030353935383436362a060716"));
+
+    }
+
+}