RpcDecoder.h

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/* Copyright 2013-2019 Homegear GmbH
 *
 * libhomegear-base is free software: you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 * 
 * libhomegear-base is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with libhomegear-base.  If not, see
 * <http://www.gnu.org/licenses/>.
 * 
 * In addition, as a special exception, the copyright holders give
 * permission to link the code of portions of this program with the
 * OpenSSL library under certain conditions as described in each
 * individual source file, and distribute linked combinations
 * including the two.
 * You must obey the GNU Lesser General Public License in all respects
 * for all of the code used other than OpenSSL.  If you modify
 * file(s) with this exception, you may extend this exception to your
 * version of the file(s), but you are not obligated to do so.  If you
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*/

#ifndef RPCDECODER_H_
#define RPCDECODER_H_

#include "../Variable.h"
#include "../Exception.h"
#include "BinaryDecoder.h"
#include "RpcHeader.h"

#include <memory>
#include <vector>
#include <cstring>
#include <cmath>

namespace BaseLib {

class SharedObjects;

namespace Rpc {

class RpcDecoderException : public BaseLib::Exception {
 public:
  explicit RpcDecoderException(std::string message) : BaseLib::Exception(message) {}
};

class RpcDecoder {
 public:
  RpcDecoder();
  explicit RpcDecoder(bool ansi, bool setInteger32 = true);

  explicit RpcDecoder(BaseLib::SharedObjects *baseLib);

  RpcDecoder(BaseLib::SharedObjects *baseLib, bool ansi, bool setInteger32 = true);
  ~RpcDecoder() = default;

  std::shared_ptr<RpcHeader> decodeHeader(const std::vector<char> &packet);
  std::shared_ptr<RpcHeader> decodeHeader(const std::vector<uint8_t> &packet);
  std::shared_ptr<std::vector<std::shared_ptr<Variable>>> decodeRequest(const std::vector<char> &packet, std::string &methodName);
  std::shared_ptr<std::vector<std::shared_ptr<Variable>>> decodeRequest(const std::vector<uint8_t> &packet, std::string &methodName);
  std::shared_ptr<Variable> decodeResponse(const std::vector<char> &packet, uint32_t offset = 0);
  std::shared_ptr<Variable> decodeResponse(const std::vector<uint8_t> &packet, uint32_t offset = 0);
 private:
  bool _ansi = false;
  std::unique_ptr<BinaryDecoder> _decoder;
  bool _setInteger32 = true;

  std::shared_ptr<Variable> decodeParameter(const std::vector<char> &packet, uint32_t &position);
  std::shared_ptr<Variable> decodeParameter(const std::vector<uint8_t> &packet, uint32_t &position);
  VariableType decodeType(const std::vector<char> &packet, uint32_t &position);
  VariableType decodeType(const std::vector<uint8_t> &packet, uint32_t &position);
  std::shared_ptr<Array> decodeArray(const std::vector<char> &packet, uint32_t &position);
  std::shared_ptr<Array> decodeArray(const std::vector<uint8_t> &packet, uint32_t &position);
  std::shared_ptr<Struct> decodeStruct(const std::vector<char> &packet, uint32_t &position);
  std::shared_ptr<Struct> decodeStruct(const std::vector<uint8_t> &packet, uint32_t &position);
};
}
}
#endif