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//
// ssl/detail/impl/openssl_init.ipp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2005 Voipster / Indrek dot Juhani at voipster dot com
// Copyright (c) 2005-2012 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 BOOST_ASIO_SSL_DETAIL_IMPL_OPENSSL_INIT_IPP
#define BOOST_ASIO_SSL_DETAIL_IMPL_OPENSSL_INIT_IPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include <boost/asio/detail/config.hpp>
#include <vector>
#include <boost/assert.hpp>
#include <boost/asio/detail/mutex.hpp>
#include <boost/asio/detail/tss_ptr.hpp>
#include <boost/asio/ssl/detail/openssl_init.hpp>
#include <boost/asio/ssl/detail/openssl_types.hpp>
#include <boost/asio/detail/push_options.hpp>
namespace boost {
namespace asio {
namespace ssl {
namespace detail {
class openssl_init_base::do_init
{
public:
do_init()
{
::SSL_library_init();
::SSL_load_error_strings();
::OpenSSL_add_all_algorithms();
mutexes_.resize(::CRYPTO_num_locks());
for (size_t i = 0; i < mutexes_.size(); ++i)
mutexes_[i].reset(new boost::asio::detail::mutex);
::CRYPTO_set_locking_callback(&do_init::openssl_locking_func);
::CRYPTO_set_id_callback(&do_init::openssl_id_func);
}
~do_init()
{
::CRYPTO_set_id_callback(0);
::CRYPTO_set_locking_callback(0);
::ERR_free_strings();
::ERR_remove_state(0);
::EVP_cleanup();
::CRYPTO_cleanup_all_ex_data();
::CONF_modules_unload(1);
#if !defined(OPENSSL_NO_ENGINE)
::ENGINE_cleanup();
#endif // !defined(OPENSSL_NO_ENGINE)
}
private:
static unsigned long openssl_id_func()
{
#if defined(BOOST_WINDOWS) || defined(__CYGWIN__)
return ::GetCurrentThreadId();
#else // defined(BOOST_WINDOWS) || defined(__CYGWIN__)
void* id = instance()->thread_id_;
if (id == 0)
instance()->thread_id_ = id = &id; // Ugh.
BOOST_ASSERT(sizeof(unsigned long) >= sizeof(void*));
return reinterpret_cast<unsigned long>(id);
#endif // defined(BOOST_WINDOWS) || defined(__CYGWIN__)
}
static void openssl_locking_func(int mode, int n,
const char* /*file*/, int /*line*/)
{
if (mode & CRYPTO_LOCK)
instance()->mutexes_[n]->lock();
else
instance()->mutexes_[n]->unlock();
}
// Mutexes to be used in locking callbacks.
std::vector<boost::asio::detail::shared_ptr<
boost::asio::detail::mutex> > mutexes_;
#if !defined(BOOST_WINDOWS) && !defined(__CYGWIN__)
// The thread identifiers to be used by openssl.
boost::asio::detail::tss_ptr<void> thread_id_;
#endif // !defined(BOOST_WINDOWS) && !defined(__CYGWIN__)
};
boost::asio::detail::shared_ptr<openssl_init_base::do_init>
openssl_init_base::instance()
{
static boost::asio::detail::shared_ptr<do_init> init(new do_init);
return init;
}
} // namespace detail
} // namespace ssl
} // namespace asio
} // namespace boost
#include <boost/asio/detail/pop_options.hpp>
#endif // BOOST_ASIO_SSL_DETAIL_IMPL_OPENSSL_INIT_IPP
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