1 files changed, 73 insertions, 0 deletions
diff --git a/src/org/traccar/protocol/CastelProtocolEncoder.java b/src/org/traccar/protocol/CastelProtocolEncoder.java
new file mode 100644
index 000000000..7ba33ca6d
--- /dev/null
+++ b/src/org/traccar/protocol/CastelProtocolEncoder.java
@@ -0,0 +1,73 @@
+/*
+ * Copyright 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 org.jboss.netty.buffer.ChannelBuffer;
+import org.jboss.netty.buffer.ChannelBuffers;
+import org.traccar.BaseProtocolEncoder;
+import org.traccar.Context;
+import org.traccar.helper.Checksum;
+import org.traccar.helper.Log;
+import org.traccar.model.Command;
+
+import java.nio.ByteOrder;
+import java.nio.charset.StandardCharsets;
+
+public class CastelProtocolEncoder extends BaseProtocolEncoder {
+
+    private ChannelBuffer encodeContent(long deviceId, short type, ChannelBuffer content) {
+        ChannelBuffer buf = ChannelBuffers.dynamicBuffer(ByteOrder.LITTLE_ENDIAN, 0);
+        String uniqueId = Context.getIdentityManager().getById(deviceId).getUniqueId();
+
+        buf.writeByte('@');
+        buf.writeByte('@');
+
+        buf.writeShort(2 + 2 + 1 + 20 + content.readableBytes()); // length
+
+        buf.writeByte(4); // protocol version
+
+        buf.writeBytes(uniqueId.getBytes(StandardCharsets.US_ASCII));
+        buf.writeZero(20 - uniqueId.length());
+
+        buf.writeShort(ChannelBuffers.swapShort(type));
+        buf.writeBytes(content);
+
+        buf.writeShort(Checksum.crc16(Checksum.CRC16_X25, buf.toByteBuffer()));
+
+        buf.writeByte('\r');
+        buf.writeByte('\n');
+
+        return buf;
+    }
+
+    @Override
+    protected Object encodeCommand(Command command) {
+        ChannelBuffer content = ChannelBuffers.dynamicBuffer(ByteOrder.LITTLE_ENDIAN, 0);
+        switch (command.getType()) {
+            case Command.TYPE_ENGINE_STOP:
+                content.writeByte(1);
+                return encodeContent(command.getDeviceId(), CastelProtocolDecoder.MSG_CC_PETROL_CONTROL, content);
+            case Command.TYPE_ENGINE_RESUME:
+                content.writeByte(0);
+                return encodeContent(command.getDeviceId(), CastelProtocolDecoder.MSG_CC_PETROL_CONTROL, content);
+            default:
+                Log.warning(new UnsupportedOperationException(command.getType()));
+                break;
+        }
+        return null;
+    }
+
+}