Merge pull request #4912 from stefanclark/Xexun2Encoder

Implement Xexun2 encoder

1 files changed, 70 insertions, 0 deletions

diff --git a/src/main/java/org/traccar/protocol/Xexun2ProtocolEncoder.java b/src/main/java/org/traccar/protocol/Xexun2ProtocolEncoder.java
new file mode 100644
index 000000000..8f3fa5672
--- /dev/null
+++ b/src/main/java/org/traccar/protocol/Xexun2ProtocolEncoder.java
@@ -0,0 +1,70 @@
+/*
+ * Copyright 2022 Stefan Clark (stefan@stefanclark.co.uk)
+ *
+ * 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.helper.Checksum;
+import org.traccar.helper.DataConverter;
+import org.traccar.model.Command;
+import org.traccar.Protocol;
+
+import java.nio.charset.StandardCharsets;
+
+public class Xexun2ProtocolEncoder extends BaseProtocolEncoder {
+
+    public Xexun2ProtocolEncoder(Protocol protocol) {
+        super(protocol);
+    }
+
+    private static ByteBuf encodeContent(String uniqueId, String content) {
+        ByteBuf buf = Unpooled.buffer();
+
+        ByteBuf message = Unpooled.copiedBuffer(content.getBytes(StandardCharsets.US_ASCII));
+
+        buf.writeShort(Xexun2ProtocolDecoder.FLAG);
+        buf.writeShort(Xexun2ProtocolDecoder.MSG_COMMAND);
+        buf.writeShort(1); // index
+        buf.writeBytes(DataConverter.parseHex(uniqueId + "0"));
+        buf.writeShort(message.readableBytes());
+        buf.writeShort(Checksum.ip(message.nioBuffer()));
+        buf.writeBytes(message);
+        buf.writeShort(Xexun2ProtocolDecoder.FLAG);
+
+        return buf;
+    }
+
+    @Override
+    protected Object encodeCommand(Command command) {
+        String uniqueId = getUniqueId(command.getDeviceId());
+
+        switch (command.getType()) {
+            case Command.TYPE_CUSTOM:
+                return encodeContent(uniqueId, command.getString(Command.KEY_DATA));
+            case Command.TYPE_POSITION_PERIODIC:
+                return encodeContent(uniqueId,
+                    String.format("tracking_send=%1$d,%1$d", command.getInteger(Command.KEY_FREQUENCY)));
+            case Command.TYPE_POWER_OFF:
+                return encodeContent(uniqueId, "of=1");
+            case Command.TYPE_REBOOT_DEVICE:
+                return encodeContent(uniqueId, "reset");
+            default:
+                return null;
+        }
+    }
+
+}