ssl/detail/password_callback.hpp

0001 //
0002 // ssl/detail/password_callback.hpp
0003 // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
0004 //
0005 // Copyright (c) 2003-2023 Christopher M. Kohlhoff (chris at kohlhoff dot com)
0006 //
0007 // Distributed under the Boost Software License, Version 1.0. (See accompanying
0008 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
0009 //
0010
0011 #ifndef BOOST_ASIO_SSL_DETAIL_PASSWORD_CALLBACK_HPP
0012 #define BOOST_ASIO_SSL_DETAIL_PASSWORD_CALLBACK_HPP
0013
0014 #if defined(_MSC_VER) && (_MSC_VER >= 1200)
0015 # pragma once
0016 #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
0017
0018 #include <boost/asio/detail/config.hpp>
0019
0020 #include <cstddef>
0021 #include <string>
0022 #include <boost/asio/ssl/context_base.hpp>
0023
0024 #include <boost/asio/detail/push_options.hpp>
0025
0026 namespace boost {
0027 namespace asio {
0028 namespace ssl {
0029 namespace detail {
0030
0031 class password_callback_base
0032 {
0033 public:
0034   virtual ~password_callback_base()
0035   {
0036   }
0037
0038   virtual std::string call(std::size_t size,
0039       context_base::password_purpose purpose) = 0;
0040 };
0041
0042 template <typename PasswordCallback>
0043 class password_callback : public password_callback_base
0044 {
0045 public:
0046   explicit password_callback(PasswordCallback callback)
0047     : callback_(callback)
0048   {
0049   }
0050
0051   virtual std::string call(std::size_t size,
0052       context_base::password_purpose purpose)
0053   {
0054     return callback_(size, purpose);
0055   }
0056
0057 private:
0058   PasswordCallback callback_;
0059 };
0060
0061 } // namespace detail
0062 } // namespace ssl
0063 } // namespace asio
0064 } // namespace boost
0065
0066 #include <boost/asio/detail/pop_options.hpp>
0067
0068 #endif // BOOST_ASIO_SSL_DETAIL_PASSWORD_CALLBACK_HPP