1 files changed, 73 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/protocol/RuptelaProtocolEncoder.java b/src/main/java/org/traccar/protocol/RuptelaProtocolEncoder.java
new file mode 100644
index 000000000..4242584c9
--- /dev/null
+++ b/src/main/java/org/traccar/protocol/RuptelaProtocolEncoder.java
@@ -0,0 +1,73 @@
+/*
+ * Copyright 2016 - 2018 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.helper.Checksum;
+import org.traccar.model.Command;
+
+import java.nio.charset.StandardCharsets;
+
+public class RuptelaProtocolEncoder extends BaseProtocolEncoder {
+
+    private ByteBuf encodeContent(int type, ByteBuf content) {
+
+        ByteBuf buf = Unpooled.buffer();
+
+        buf.writeShort(1 + content.readableBytes());
+        buf.writeByte(100 + type);
+        buf.writeBytes(content);
+        buf.writeShort(Checksum.crc16(Checksum.CRC16_KERMIT, buf.nioBuffer(2, buf.writerIndex() - 2)));
+
+        return buf;
+    }
+
+    @Override
+    protected Object encodeCommand(Command command) {
+
+        ByteBuf content = Unpooled.buffer();
+
+        switch (command.getType()) {
+            case Command.TYPE_CUSTOM:
+                content.writeBytes(command.getString(Command.KEY_DATA).getBytes(StandardCharsets.US_ASCII));
+                return encodeContent(RuptelaProtocolDecoder.MSG_SMS_VIA_GPRS, content);
+            case Command.TYPE_CONFIGURATION:
+                content.writeBytes((command.getString(Command.KEY_DATA) + "\r\n").getBytes(StandardCharsets.US_ASCII));
+                return encodeContent(RuptelaProtocolDecoder.MSG_DEVICE_CONFIGURATION, content);
+            case Command.TYPE_GET_VERSION:
+                return encodeContent(RuptelaProtocolDecoder.MSG_DEVICE_VERSION, content);
+            case Command.TYPE_FIRMWARE_UPDATE:
+                content.writeBytes("|FU_STRT*\r\n".getBytes(StandardCharsets.US_ASCII));
+                return encodeContent(RuptelaProtocolDecoder.MSG_FIRMWARE_UPDATE, content);
+            case Command.TYPE_OUTPUT_CONTROL:
+                content.writeInt(command.getInteger(Command.KEY_INDEX));
+                content.writeInt(Integer.parseInt(command.getString(Command.KEY_DATA)));
+                return encodeContent(RuptelaProtocolDecoder.MSG_SET_IO, content);
+            case Command.TYPE_SET_CONNECTION:
+                String c = command.getString(Command.KEY_SERVER) + "," + command.getInteger(Command.KEY_PORT) + ",TCP";
+                content.writeBytes(c.getBytes(StandardCharsets.US_ASCII));
+                return encodeContent(RuptelaProtocolDecoder.MSG_SET_CONNECTION, content);
+            case Command.TYPE_SET_ODOMETER:
+                content.writeInt(Integer.parseInt(command.getString(Command.KEY_DATA)));
+                return encodeContent(RuptelaProtocolDecoder.MSG_SET_ODOMETER, content);
+            default:
+                return null;
+        }
+    }
+
+}