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-rw-r--r--3rdparty/asio/include/asio/ssl/detail/impl/engine.ipp377
1 files changed, 377 insertions, 0 deletions
diff --git a/3rdparty/asio/include/asio/ssl/detail/impl/engine.ipp b/3rdparty/asio/include/asio/ssl/detail/impl/engine.ipp
new file mode 100644
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+++ b/3rdparty/asio/include/asio/ssl/detail/impl/engine.ipp
@@ -0,0 +1,377 @@
+//
+// ssl/detail/impl/engine.ipp
+// ~~~~~~~~~~~~~~~~~~~~~~~~~~
+//
+// Copyright (c) 2003-2024 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_IMPL_ENGINE_IPP
+#define ASIO_SSL_DETAIL_IMPL_ENGINE_IPP
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1200)
+# pragma once
+#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
+
+#include "asio/detail/config.hpp"
+
+#include "asio/detail/throw_error.hpp"
+#include "asio/error.hpp"
+#include "asio/ssl/detail/engine.hpp"
+#include "asio/ssl/error.hpp"
+#include "asio/ssl/verify_context.hpp"
+
+#include "asio/detail/push_options.hpp"
+
+namespace asio {
+namespace ssl {
+namespace detail {
+
+engine::engine(SSL_CTX* context)
+ : ssl_(::SSL_new(context))
+{
+ if (!ssl_)
+ {
+ asio::error_code ec(
+ static_cast<int>(::ERR_get_error()),
+ asio::error::get_ssl_category());
+ asio::detail::throw_error(ec, "engine");
+ }
+
+#if (OPENSSL_VERSION_NUMBER < 0x10000000L)
+ accept_mutex().init();
+#endif // (OPENSSL_VERSION_NUMBER < 0x10000000L)
+
+ ::SSL_set_mode(ssl_, SSL_MODE_ENABLE_PARTIAL_WRITE);
+ ::SSL_set_mode(ssl_, SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER);
+#if defined(SSL_MODE_RELEASE_BUFFERS)
+ ::SSL_set_mode(ssl_, SSL_MODE_RELEASE_BUFFERS);
+#endif // defined(SSL_MODE_RELEASE_BUFFERS)
+
+ ::BIO* int_bio = 0;
+ ::BIO_new_bio_pair(&int_bio, 0, &ext_bio_, 0);
+ ::SSL_set_bio(ssl_, int_bio, int_bio);
+}
+
+engine::engine(SSL* ssl_impl)
+ : ssl_(ssl_impl)
+{
+#if (OPENSSL_VERSION_NUMBER < 0x10000000L)
+ accept_mutex().init();
+#endif // (OPENSSL_VERSION_NUMBER < 0x10000000L)
+
+ ::SSL_set_mode(ssl_, SSL_MODE_ENABLE_PARTIAL_WRITE);
+ ::SSL_set_mode(ssl_, SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER);
+#if defined(SSL_MODE_RELEASE_BUFFERS)
+ ::SSL_set_mode(ssl_, SSL_MODE_RELEASE_BUFFERS);
+#endif // defined(SSL_MODE_RELEASE_BUFFERS)
+
+ ::BIO* int_bio = 0;
+ ::BIO_new_bio_pair(&int_bio, 0, &ext_bio_, 0);
+ ::SSL_set_bio(ssl_, int_bio, int_bio);
+}
+
+engine::engine(engine&& other) noexcept
+ : ssl_(other.ssl_),
+ ext_bio_(other.ext_bio_)
+{
+ other.ssl_ = 0;
+ other.ext_bio_ = 0;
+}
+
+engine::~engine()
+{
+ if (ssl_ && SSL_get_app_data(ssl_))
+ {
+ delete static_cast<verify_callback_base*>(SSL_get_app_data(ssl_));
+ SSL_set_app_data(ssl_, 0);
+ }
+
+ if (ext_bio_)
+ ::BIO_free(ext_bio_);
+
+ if (ssl_)
+ ::SSL_free(ssl_);
+}
+
+engine& engine::operator=(engine&& other) noexcept
+{
+ if (this != &other)
+ {
+ ssl_ = other.ssl_;
+ ext_bio_ = other.ext_bio_;
+ other.ssl_ = 0;
+ other.ext_bio_ = 0;
+ }
+ return *this;
+}
+
+SSL* engine::native_handle()
+{
+ return ssl_;
+}
+
+asio::error_code engine::set_verify_mode(
+ verify_mode v, asio::error_code& ec)
+{
+ ::SSL_set_verify(ssl_, v, ::SSL_get_verify_callback(ssl_));
+
+ ec = asio::error_code();
+ return ec;
+}
+
+asio::error_code engine::set_verify_depth(
+ int depth, asio::error_code& ec)
+{
+ ::SSL_set_verify_depth(ssl_, depth);
+
+ ec = asio::error_code();
+ return ec;
+}
+
+asio::error_code engine::set_verify_callback(
+ verify_callback_base* callback, asio::error_code& ec)
+{
+ if (SSL_get_app_data(ssl_))
+ delete static_cast<verify_callback_base*>(SSL_get_app_data(ssl_));
+
+ SSL_set_app_data(ssl_, callback);
+
+ ::SSL_set_verify(ssl_, ::SSL_get_verify_mode(ssl_),
+ &engine::verify_callback_function);
+
+ ec = asio::error_code();
+ return ec;
+}
+
+int engine::verify_callback_function(int preverified, X509_STORE_CTX* ctx)
+{
+ if (ctx)
+ {
+ if (SSL* ssl = static_cast<SSL*>(
+ ::X509_STORE_CTX_get_ex_data(
+ ctx, ::SSL_get_ex_data_X509_STORE_CTX_idx())))
+ {
+ if (SSL_get_app_data(ssl))
+ {
+ verify_callback_base* callback =
+ static_cast<verify_callback_base*>(
+ SSL_get_app_data(ssl));
+
+ verify_context verify_ctx(ctx);
+ return callback->call(preverified != 0, verify_ctx) ? 1 : 0;
+ }
+ }
+ }
+
+ return 0;
+}
+
+engine::want engine::handshake(
+ stream_base::handshake_type type, asio::error_code& ec)
+{
+ return perform((type == asio::ssl::stream_base::client)
+ ? &engine::do_connect : &engine::do_accept, 0, 0, ec, 0);
+}
+
+engine::want engine::shutdown(asio::error_code& ec)
+{
+ return perform(&engine::do_shutdown, 0, 0, ec, 0);
+}
+
+engine::want engine::write(const asio::const_buffer& data,
+ asio::error_code& ec, std::size_t& bytes_transferred)
+{
+ if (data.size() == 0)
+ {
+ ec = asio::error_code();
+ return engine::want_nothing;
+ }
+
+ return perform(&engine::do_write,
+ const_cast<void*>(data.data()),
+ data.size(), ec, &bytes_transferred);
+}
+
+engine::want engine::read(const asio::mutable_buffer& data,
+ asio::error_code& ec, std::size_t& bytes_transferred)
+{
+ if (data.size() == 0)
+ {
+ ec = asio::error_code();
+ return engine::want_nothing;
+ }
+
+ return perform(&engine::do_read, data.data(),
+ data.size(), ec, &bytes_transferred);
+}
+
+asio::mutable_buffer engine::get_output(
+ const asio::mutable_buffer& data)
+{
+ int length = ::BIO_read(ext_bio_,
+ data.data(), static_cast<int>(data.size()));
+
+ return asio::buffer(data,
+ length > 0 ? static_cast<std::size_t>(length) : 0);
+}
+
+asio::const_buffer engine::put_input(
+ const asio::const_buffer& data)
+{
+ int length = ::BIO_write(ext_bio_,
+ data.data(), static_cast<int>(data.size()));
+
+ return asio::buffer(data +
+ (length > 0 ? static_cast<std::size_t>(length) : 0));
+}
+
+const asio::error_code& engine::map_error_code(
+ asio::error_code& ec) const
+{
+ // We only want to map the error::eof code.
+ if (ec != asio::error::eof)
+ return ec;
+
+ // If there's data yet to be read, it's an error.
+ if (BIO_wpending(ext_bio_))
+ {
+ ec = asio::ssl::error::stream_truncated;
+ return ec;
+ }
+
+ // SSL v2 doesn't provide a protocol-level shutdown, so an eof on the
+ // underlying transport is passed through.
+#if (OPENSSL_VERSION_NUMBER < 0x10100000L)
+ if (SSL_version(ssl_) == SSL2_VERSION)
+ return ec;
+#endif // (OPENSSL_VERSION_NUMBER < 0x10100000L)
+
+ // Otherwise, the peer should have negotiated a proper shutdown.
+ if ((::SSL_get_shutdown(ssl_) & SSL_RECEIVED_SHUTDOWN) == 0)
+ {
+ ec = asio::ssl::error::stream_truncated;
+ }
+
+ return ec;
+}
+
+#if (OPENSSL_VERSION_NUMBER < 0x10000000L)
+asio::detail::static_mutex& engine::accept_mutex()
+{
+ static asio::detail::static_mutex mutex = ASIO_STATIC_MUTEX_INIT;
+ return mutex;
+}
+#endif // (OPENSSL_VERSION_NUMBER < 0x10000000L)
+
+engine::want engine::perform(int (engine::* op)(void*, std::size_t),
+ void* data, std::size_t length, asio::error_code& ec,
+ std::size_t* bytes_transferred)
+{
+ std::size_t pending_output_before = ::BIO_ctrl_pending(ext_bio_);
+ ::ERR_clear_error();
+ int result = (this->*op)(data, length);
+ int ssl_error = ::SSL_get_error(ssl_, result);
+ int sys_error = static_cast<int>(::ERR_get_error());
+ std::size_t pending_output_after = ::BIO_ctrl_pending(ext_bio_);
+
+ if (ssl_error == SSL_ERROR_SSL)
+ {
+ ec = asio::error_code(sys_error,
+ asio::error::get_ssl_category());
+ return pending_output_after > pending_output_before
+ ? want_output : want_nothing;
+ }
+
+ if (ssl_error == SSL_ERROR_SYSCALL)
+ {
+ if (sys_error == 0)
+ {
+ ec = asio::ssl::error::unspecified_system_error;
+ }
+ else
+ {
+ ec = asio::error_code(sys_error,
+ asio::error::get_ssl_category());
+ }
+ return pending_output_after > pending_output_before
+ ? want_output : want_nothing;
+ }
+
+ if (result > 0 && bytes_transferred)
+ *bytes_transferred = static_cast<std::size_t>(result);
+
+ if (ssl_error == SSL_ERROR_WANT_WRITE)
+ {
+ ec = asio::error_code();
+ return want_output_and_retry;
+ }
+ else if (pending_output_after > pending_output_before)
+ {
+ ec = asio::error_code();
+ return result > 0 ? want_output : want_output_and_retry;
+ }
+ else if (ssl_error == SSL_ERROR_WANT_READ)
+ {
+ ec = asio::error_code();
+ return want_input_and_retry;
+ }
+ else if (ssl_error == SSL_ERROR_ZERO_RETURN)
+ {
+ ec = asio::error::eof;
+ return want_nothing;
+ }
+ else if (ssl_error == SSL_ERROR_NONE)
+ {
+ ec = asio::error_code();
+ return want_nothing;
+ }
+ else
+ {
+ ec = asio::ssl::error::unexpected_result;
+ return want_nothing;
+ }
+}
+
+int engine::do_accept(void*, std::size_t)
+{
+#if (OPENSSL_VERSION_NUMBER < 0x10000000L)
+ asio::detail::static_mutex::scoped_lock lock(accept_mutex());
+#endif // (OPENSSL_VERSION_NUMBER < 0x10000000L)
+ return ::SSL_accept(ssl_);
+}
+
+int engine::do_connect(void*, std::size_t)
+{
+ return ::SSL_connect(ssl_);
+}
+
+int engine::do_shutdown(void*, std::size_t)
+{
+ int result = ::SSL_shutdown(ssl_);
+ if (result == 0)
+ result = ::SSL_shutdown(ssl_);
+ return result;
+}
+
+int engine::do_read(void* data, std::size_t length)
+{
+ return ::SSL_read(ssl_, data,
+ length < INT_MAX ? static_cast<int>(length) : INT_MAX);
+}
+
+int engine::do_write(void* data, std::size_t length)
+{
+ return ::SSL_write(ssl_, data,
+ length < INT_MAX ? static_cast<int>(length) : INT_MAX);
+}
+
+} // namespace detail
+} // namespace ssl
+} // namespace asio
+
+#include "asio/detail/pop_options.hpp"
+
+#endif // ASIO_SSL_DETAIL_IMPL_ENGINE_IPP