openssl-helper.hpp

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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2013-2019 Regents of the University of California.
 *
 * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
 *
 * ndn-cxx library 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.
 *
 * ndn-cxx library 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 copies of the GNU General Public License and GNU Lesser
 * General Public License along with ndn-cxx, e.g., in COPYING.md file.  If not, see
 * <http://www.gnu.org/licenses/>.
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 * See AUTHORS.md for complete list of ndn-cxx authors and contributors.
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#ifndef NDN_CXX_SECURITY_IMPL_OPENSSL_HELPER_HPP
#define NDN_CXX_SECURITY_IMPL_OPENSSL_HELPER_HPP
 
#include "ndn-cxx/security/impl/openssl.hpp"
#include "ndn-cxx/security/security-common.hpp"
 
namespace ndn {
namespace security {
namespace detail {
 
NDN_CXX_NODISCARD const EVP_MD*
digestAlgorithmToEvpMd(DigestAlgorithm algo);
 
NDN_CXX_NODISCARD int
getEvpPkeyType(EVP_PKEY* key);
 
class EvpMdCtx : noncopyable
{
public:
  EvpMdCtx();
 
  ~EvpMdCtx();
 
  operator EVP_MD_CTX*() const
  {
    return m_ctx;
  }
 
private:
  EVP_MD_CTX* m_ctx;
};
 
class EvpPkeyCtx : noncopyable
{
public:
  explicit
  EvpPkeyCtx(EVP_PKEY* key);
 
  explicit
  EvpPkeyCtx(int id);
 
  ~EvpPkeyCtx();
 
  operator EVP_PKEY_CTX*() const
  {
    return m_ctx;
  }
 
private:
  EVP_PKEY_CTX* m_ctx;
};
 
class Bio : noncopyable
{
public:
#if OPENSSL_VERSION_NUMBER < 0x1010000fL
  using MethodPtr = BIO_METHOD*;
#else
  using MethodPtr = const BIO_METHOD*;
#endif // OPENSSL_VERSION_NUMBER < 0x1010000fL
 
  explicit
  Bio(MethodPtr method);
 
  ~Bio();
 
  operator BIO*() const
  {
    return m_bio;
  }
 
  NDN_CXX_NODISCARD bool
  read(uint8_t* buf, size_t buflen) const noexcept;
 
  NDN_CXX_NODISCARD bool
  write(const uint8_t* buf, size_t buflen) noexcept;
 
private:
  BIO* m_bio;
};
 
} // namespace detail
} // namespace security
} // namespace ndn
 
#endif // NDN_CXX_SECURITY_IMPL_OPENSSL_HELPER_HPP