1 files changed, 82 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/protocol/CellocatorProtocolEncoder.java b/src/main/java/org/traccar/protocol/CellocatorProtocolEncoder.java
new file mode 100644
index 000000000..76fa67686
--- /dev/null
+++ b/src/main/java/org/traccar/protocol/CellocatorProtocolEncoder.java
@@ -0,0 +1,82 @@
+/*
+ * Copyright 2017 - 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 org.traccar.BaseProtocolEncoder;
+import org.traccar.model.Command;
+import org.traccar.Protocol;
+
+public class CellocatorProtocolEncoder extends BaseProtocolEncoder {
+
+    public CellocatorProtocolEncoder(Protocol protocol) {
+        super(protocol);
+    }
+
+    public static ByteBuf encodeContent(int type, int uniqueId, int packetNumber, ByteBuf content) {
+
+        ByteBuf buf = Unpooled.buffer();
+        buf.writeByte('M');
+        buf.writeByte('C');
+        buf.writeByte('G');
+        buf.writeByte('P');
+        buf.writeByte(type);
+        buf.writeIntLE(uniqueId);
+        buf.writeByte(packetNumber);
+        buf.writeIntLE(0); // authentication code
+        buf.writeBytes(content);
+
+        byte checksum = 0;
+        for (int i = 4; i < buf.writerIndex(); i++) {
+            checksum += buf.getByte(i);
+        }
+        buf.writeByte(checksum);
+
+        return buf;
+    }
+
+    private ByteBuf encodeCommand(long deviceId, int command, int data1, int data2) {
+
+        ByteBuf content = Unpooled.buffer();
+        content.writeByte(command);
+        content.writeByte(command);
+        content.writeByte(data1);
+        content.writeByte(data1);
+        content.writeByte(data2);
+        content.writeByte(data2);
+        content.writeIntLE(0); // command specific data
+
+        ByteBuf buf = encodeContent(0, Integer.parseInt(getUniqueId(deviceId)), 0, content);
+        content.release();
+
+        return buf;
+    }
+
+    @Override
+    protected Object encodeCommand(Command command) {
+
+        switch (command.getType()) {
+            case Command.TYPE_OUTPUT_CONTROL:
+                int data = Integer.parseInt(command.getString(Command.KEY_DATA)) << 4
+                        + command.getInteger(Command.KEY_INDEX);
+                return encodeCommand(command.getDeviceId(), 0x03, data, 0);
+            default:
+                return null;
+        }
+    }
+
+}