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/*
* Copyright 2016 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.StringProtocolEncoder;
import org.traccar.helper.Log;
import org.traccar.model.Command;
import java.nio.charset.StandardCharsets;
public class EnforaProtocolEncoder extends StringProtocolEncoder {
private ChannelBuffer encodeContent(String content) {
ChannelBuffer buf = ChannelBuffers.dynamicBuffer();
byte[] contentBytes = content.getBytes();
buf.writeByte(0x00); // Byte 0 Length
buf.writeByte(contentBytes.length + 6); // Byte 1 Length
buf.writeByte(0x00); // Byte 2 Api Number Sequence
buf.writeByte(0x00); // Byte 3 Api Number Sequence
buf.writeByte(0x04); // Byte 4 Command Type 4 AT Command
buf.writeByte(0x00); // Byte 5 API Optional Header
// Byte 6+m AT Command
buf.writeBytes(content.getBytes(StandardCharsets.UTF_8));
return buf;
}
@Override
protected Object encodeCommand(Command command) {
initDevicePassword(command, "");
switch (command.getType()) {
case Command.TYPE_CUSTOM:
return encodeContent(command.getString(Command.KEY_DATA));
case Command.TYPE_ENGINE_STOP:
return encodeContent("AT$IOGP3=1");
case Command.TYPE_ENGINE_RESUME:
return encodeContent("AT$IOGP3=0");
default:
Log.warning(new UnsupportedOperationException(command.getType()));
break;
}
return null;
}
}
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