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-rw-r--r--src/org/traccar/protocol/CastelProtocolEncoder.java73
1 files changed, 73 insertions, 0 deletions
diff --git a/src/org/traccar/protocol/CastelProtocolEncoder.java b/src/org/traccar/protocol/CastelProtocolEncoder.java
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+++ b/src/org/traccar/protocol/CastelProtocolEncoder.java
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+/*
+ * 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;
+ }
+
+}