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-rw-r--r--lib/asio/ssl/detail/engine.hpp160
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diff --git a/lib/asio/ssl/detail/engine.hpp b/lib/asio/ssl/detail/engine.hpp
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-//
-// ssl/detail/engine.hpp
-// ~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#ifndef ASIO_SSL_DETAIL_ENGINE_HPP
-#define ASIO_SSL_DETAIL_ENGINE_HPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-
-#include "asio/buffer.hpp"
-#include "asio/detail/static_mutex.hpp"
-#include "asio/ssl/detail/openssl_types.hpp"
-#include "asio/ssl/detail/verify_callback.hpp"
-#include "asio/ssl/stream_base.hpp"
-#include "asio/ssl/verify_mode.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace ssl {
-namespace detail {
-
-class engine
-{
-public:
- enum want
- {
- // Returned by functions to indicate that the engine wants input. The input
- // buffer should be updated to point to the data. The engine then needs to
- // be called again to retry the operation.
- want_input_and_retry = -2,
-
- // Returned by functions to indicate that the engine wants to write output.
- // The output buffer points to the data to be written. The engine then
- // needs to be called again to retry the operation.
- want_output_and_retry = -1,
-
- // Returned by functions to indicate that the engine doesn't need input or
- // output.
- want_nothing = 0,
-
- // Returned by functions to indicate that the engine wants to write output.
- // The output buffer points to the data to be written. After that the
- // operation is complete, and the engine does not need to be called again.
- want_output = 1
- };
-
- // Construct a new engine for the specified context.
- ASIO_DECL explicit engine(SSL_CTX* context);
-
- // Destructor.
- ASIO_DECL ~engine();
-
- // Get the underlying implementation in the native type.
- ASIO_DECL SSL* native_handle();
-
- // Set the peer verification mode.
- ASIO_DECL asio::error_code set_verify_mode(
- verify_mode v, asio::error_code& ec);
-
- // Set the peer verification depth.
- ASIO_DECL asio::error_code set_verify_depth(
- int depth, asio::error_code& ec);
-
- // Set a peer certificate verification callback.
- ASIO_DECL asio::error_code set_verify_callback(
- verify_callback_base* callback, asio::error_code& ec);
-
- // Perform an SSL handshake using either SSL_connect (client-side) or
- // SSL_accept (server-side).
- ASIO_DECL want handshake(
- stream_base::handshake_type type, asio::error_code& ec);
-
- // Perform a graceful shutdown of the SSL session.
- ASIO_DECL want shutdown(asio::error_code& ec);
-
- // Write bytes to the SSL session.
- ASIO_DECL want write(const asio::const_buffer& data,
- asio::error_code& ec, std::size_t& bytes_transferred);
-
- // Read bytes from the SSL session.
- ASIO_DECL want read(const asio::mutable_buffer& data,
- asio::error_code& ec, std::size_t& bytes_transferred);
-
- // Get output data to be written to the transport.
- ASIO_DECL asio::mutable_buffer get_output(
- const asio::mutable_buffer& data);
-
- // Put input data that was read from the transport.
- ASIO_DECL asio::const_buffer put_input(
- const asio::const_buffer& data);
-
- // Map an error::eof code returned by the underlying transport according to
- // the type and state of the SSL session. Returns a const reference to the
- // error code object, suitable for passing to a completion handler.
- ASIO_DECL const asio::error_code& map_error_code(
- asio::error_code& ec) const;
-
-private:
- // Disallow copying and assignment.
- engine(const engine&);
- engine& operator=(const engine&);
-
- // Callback used when the SSL implementation wants to verify a certificate.
- ASIO_DECL static int verify_callback_function(
- int preverified, X509_STORE_CTX* ctx);
-
-#if (OPENSSL_VERSION_NUMBER < 0x10000000L)
- // The SSL_accept function may not be thread safe. This mutex is used to
- // protect all calls to the SSL_accept function.
- ASIO_DECL static asio::detail::static_mutex& accept_mutex();
-#endif // (OPENSSL_VERSION_NUMBER < 0x10000000L)
-
- // Perform one operation. Returns >= 0 on success or error, want_read if the
- // operation needs more input, or want_write if it needs to write some output
- // before the operation can complete.
- ASIO_DECL want perform(int (engine::* op)(void*, std::size_t),
- void* data, std::size_t length, asio::error_code& ec,
- std::size_t* bytes_transferred);
-
- // Adapt the SSL_accept function to the signature needed for perform().
- ASIO_DECL int do_accept(void*, std::size_t);
-
- // Adapt the SSL_connect function to the signature needed for perform().
- ASIO_DECL int do_connect(void*, std::size_t);
-
- // Adapt the SSL_shutdown function to the signature needed for perform().
- ASIO_DECL int do_shutdown(void*, std::size_t);
-
- // Adapt the SSL_read function to the signature needed for perform().
- ASIO_DECL int do_read(void* data, std::size_t length);
-
- // Adapt the SSL_write function to the signature needed for perform().
- ASIO_DECL int do_write(void* data, std::size_t length);
-
- SSL* ssl_;
- BIO* ext_bio_;
-};
-
-} // namespace detail
-} // namespace ssl
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#if defined(ASIO_HEADER_ONLY)
-# include "asio/ssl/detail/impl/engine.ipp"
-#endif // defined(ASIO_HEADER_ONLY)
-
-#endif // ASIO_SSL_DETAIL_ENGINE_HPP