Support Teltonika Dualcam protocol

5 files changed, 257 insertions, 0 deletions

diff --git a/src/main/java/org/traccar/protocol/DualcamFrameDecoder.java b/src/main/java/org/traccar/protocol/DualcamFrameDecoder.java
new file mode 100644
index 000000000..312d43f19
--- /dev/null
+++ b/src/main/java/org/traccar/protocol/DualcamFrameDecoder.java
@@ -0,0 +1,49 @@
+/*
+ * 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 DualcamFrameDecoder extends BaseFrameDecoder {
+
+    private static final int MESSAGE_MINIMUM_LENGTH = 4;
+
+    @Override
+    protected Object decode(
+            ChannelHandlerContext ctx, Channel channel, ByteBuf buf) throws Exception {
+
+        if (buf.readableBytes() < MESSAGE_MINIMUM_LENGTH) {
+            return null;
+        }
+
+        int length;
+        if (buf.getUnsignedShort(buf.readerIndex()) == 0) {
+            length = 16;
+        } else {
+            length = 4 + buf.getUnsignedShort(buf.readerIndex() + 2);
+        }
+
+        if (buf.readableBytes() >= length) {
+            return buf.readRetainedSlice(length);
+        }
+
+        return null;
+    }
+
+}
diff --git a/src/main/java/org/traccar/protocol/DualcamProtocol.java b/src/main/java/org/traccar/protocol/DualcamProtocol.java
new file mode 100644
index 000000000..9f8d6778e
--- /dev/null
+++ b/src/main/java/org/traccar/protocol/DualcamProtocol.java
@@ -0,0 +1,34 @@
+/*
+ * 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 DualcamProtocol extends BaseProtocol {
+
+    public DualcamProtocol() {
+        addServer(new TrackerServer(false, getName()) {
+            @Override
+            protected void addProtocolHandlers(PipelineBuilder pipeline) {
+                pipeline.addLast(new DualcamProtocolDecoder(DualcamProtocol.this));
+                pipeline.addLast(new DishaProtocolDecoder(DualcamProtocol.this));
+            }
+        });
+    }
+
+}
diff --git a/src/main/java/org/traccar/protocol/DualcamProtocolDecoder.java b/src/main/java/org/traccar/protocol/DualcamProtocolDecoder.java
new file mode 100644
index 000000000..4647e287c
--- /dev/null
+++ b/src/main/java/org/traccar/protocol/DualcamProtocolDecoder.java
@@ -0,0 +1,124 @@
+/*
+ * 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.Context;
+import org.traccar.DeviceSession;
+import org.traccar.NetworkMessage;
+import org.traccar.Protocol;
+import org.traccar.helper.BitUtil;
+import org.traccar.model.Position;
+
+import java.net.SocketAddress;
+import java.nio.charset.StandardCharsets;
+
+public class DualcamProtocolDecoder extends BaseProtocolDecoder {
+
+    public DualcamProtocolDecoder(Protocol protocol) {
+        super(protocol);
+    }
+
+    public static final int MSG_INIT = 0;
+    public static final int MSG_START = 1;
+    public static final int MSG_RESUME = 2;
+    public static final int MSG_SYNC = 3;
+    public static final int MSG_DATA = 4;
+    public static final int MSG_COMPLETE = 5;
+    public static final int MSG_FILE_REQUEST = 8;
+    public static final int MSG_INIT_REQUEST = 9;
+
+    private String uniqueId;
+    private int packetCount;
+    private int currentPacket;
+    private ByteBuf photo;
+
+    @Override
+    protected Object decode(
+            Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+        ByteBuf buf = (ByteBuf) msg;
+
+        int type = buf.readUnsignedShort();
+
+        switch (type) {
+            case MSG_INIT:
+                buf.readUnsignedShort(); // protocol id
+                uniqueId = String.valueOf(buf.readLong());
+                DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, uniqueId);
+                long settings = buf.readUnsignedInt();
+                if (channel != null && deviceSession != null) {
+                    if (BitUtil.check(settings, 26)) {
+                        ByteBuf response = Unpooled.buffer();
+                        response.writeShort(MSG_FILE_REQUEST);
+                        String file = "%photof";
+                        response.writeShort(file.length());
+                        response.writeCharSequence(file, StandardCharsets.US_ASCII);
+                        channel.writeAndFlush(new NetworkMessage(response, remoteAddress));
+                    } else {
+                        ByteBuf response = Unpooled.buffer();
+                        response.writeShort(MSG_COMPLETE);
+                        channel.writeAndFlush(new NetworkMessage(response, remoteAddress));
+                    }
+                }
+                break;
+            case MSG_START:
+                buf.readUnsignedShort(); // length
+                packetCount = buf.readInt();
+                currentPacket = 1;
+                photo = Unpooled.buffer();
+                if (channel != null) {
+                    ByteBuf response = Unpooled.buffer();
+                    response.writeShort(MSG_RESUME);
+                    response.writeShort(4);
+                    response.writeInt(currentPacket);
+                    channel.writeAndFlush(new NetworkMessage(response, remoteAddress));
+                }
+                break;
+            case MSG_DATA:
+                buf.readUnsignedShort(); // length
+                photo.writeBytes(buf, buf.readableBytes());
+                if (currentPacket == packetCount) {
+                    deviceSession = getDeviceSession(channel, remoteAddress);
+                    Position position = new Position(getProtocolName());
+                    position.setDeviceId(deviceSession.getDeviceId());
+                    getLastLocation(position, null);
+                    try {
+                        position.set(Position.KEY_IMAGE, Context.getMediaManager().writeFile(uniqueId, photo, "jpg"));
+                    } finally {
+                        photo.release();
+                        photo = null;
+                    }
+                    if (channel != null) {
+                        ByteBuf response = Unpooled.buffer();
+                        response.writeShort(MSG_INIT_REQUEST);
+                        channel.writeAndFlush(new NetworkMessage(response, remoteAddress));
+                    }
+                } else {
+                    currentPacket += 1;
+                }
+                break;
+            default:
+                break;
+        }
+
+        return null;
+    }
+
+}
diff --git a/src/test/java/org/traccar/protocol/DualcamFrameDecoderTest.java b/src/test/java/org/traccar/protocol/DualcamFrameDecoderTest.java
new file mode 100644
index 000000000..46f32a8ae
--- /dev/null
+++ b/src/test/java/org/traccar/protocol/DualcamFrameDecoderTest.java
@@ -0,0 +1,23 @@
+package org.traccar.protocol;
+
+import org.junit.Test;
+import org.traccar.ProtocolTest;
+
+public class DualcamFrameDecoderTest extends ProtocolTest {
+
+    @Test
+    public void testDecode() throws Exception {
+
+        var decoder = new DualcamFrameDecoder();
+
+        verifyFrame(
+                binary("000000050001403a4abaa31444000400"),
+                decoder.decode(null, null, binary("000000050001403a4abaa31444000400")));
+
+        verifyFrame(
+                binary("00010006000000110000"),
+                decoder.decode(null, null, binary("00010006000000110000")));
+
+    }
+
+}
diff --git a/src/test/java/org/traccar/protocol/DualcamProtocolDecoderTest.java b/src/test/java/org/traccar/protocol/DualcamProtocolDecoderTest.java
new file mode 100644
index 000000000..3dd11bdf7
--- /dev/null
+++ b/src/test/java/org/traccar/protocol/DualcamProtocolDecoderTest.java
@@ -0,0 +1,27 @@
+package org.traccar.protocol;
+
+import org.junit.Test;
+import org.traccar.ProtocolTest;
+
+public class DualcamProtocolDecoderTest extends ProtocolTest {
+
+    @Test
+    public void testDecode() throws Exception {
+
+        var decoder = new DualcamProtocolDecoder(null);
+
+        verifyNull(decoder, binary(
+                "000000050001403a4abaa31444000400"));
+
+        verifyNull(decoder, binary(
+                "00010006000000110000"));
+
+        verifyNull(decoder, binary(
+                "0003000400000001"));
+
+        verifyNull(decoder, binary(
+                "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"));
+
+    }
+
+}