// Copyright (c) 2005-2021 Jay Berkenbilt

// Copyright (c) 2022-2025 Jay Berkenbilt and Manfred Holger

//

// This file is part of qpdf.

//

// 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.

//

// Versions of qpdf prior to version 7 were released under the terms

// of version 2.0 of the Artistic License. At your option, you may

// continue to consider qpdf to be licensed under those terms. Please

// see the manual for additional information.

#ifndef RANDOMDATAPROVIDER_HH

#define RANDOMDATAPROVIDER_HH

#include <qpdf/DLL.h>

#include <cstring> // for size_t

class QPDF_DLL_CLASS RandomDataProvider

{

  public:

    virtual ~RandomDataProvider() = default;

    virtual void provideRandomData(unsigned char* data, size_t len) = 0;

  protected:

    QPDF_DLL_PRIVATE

    RandomDataProvider() = default;

  private:

    RandomDataProvider(RandomDataProvider const&) = delete;

    RandomDataProvider& operator=(RandomDataProvider const&) = delete;

};

#endif // RANDOMDATAPROVIDER_HH