Chris@16: //
Chris@16: // ssl/detail/impl/openssl_init.ipp
Chris@16: // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Chris@16: //
Chris@16: // Copyright (c) 2005 Voipster / Indrek dot Juhani at voipster dot com
Chris@101: // Copyright (c) 2005-2015 Christopher M. Kohlhoff (chris at kohlhoff dot com)
Chris@16: //
Chris@16: // Distributed under the Boost Software License, Version 1.0. (See accompanying
Chris@16: // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
Chris@16: //
Chris@16: 
Chris@16: #ifndef BOOST_ASIO_SSL_DETAIL_IMPL_OPENSSL_INIT_IPP
Chris@16: #define BOOST_ASIO_SSL_DETAIL_IMPL_OPENSSL_INIT_IPP
Chris@16: 
Chris@16: #if defined(_MSC_VER) && (_MSC_VER >= 1200)
Chris@16: # pragma once
Chris@16: #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
Chris@16: 
Chris@16: #include <boost/asio/detail/config.hpp>
Chris@16: #include <vector>
Chris@16: #include <boost/asio/detail/assert.hpp>
Chris@16: #include <boost/asio/detail/mutex.hpp>
Chris@16: #include <boost/asio/detail/tss_ptr.hpp>
Chris@16: #include <boost/asio/ssl/detail/openssl_init.hpp>
Chris@16: #include <boost/asio/ssl/detail/openssl_types.hpp>
Chris@16: 
Chris@16: #include <boost/asio/detail/push_options.hpp>
Chris@16: 
Chris@16: namespace boost {
Chris@16: namespace asio {
Chris@16: namespace ssl {
Chris@16: namespace detail {
Chris@16: 
Chris@16: class openssl_init_base::do_init
Chris@16: {
Chris@16: public:
Chris@16:   do_init()
Chris@16:   {
Chris@16:     ::SSL_library_init();
Chris@16:     ::SSL_load_error_strings();        
Chris@16:     ::OpenSSL_add_all_algorithms();
Chris@16: 
Chris@16:     mutexes_.resize(::CRYPTO_num_locks());
Chris@16:     for (size_t i = 0; i < mutexes_.size(); ++i)
Chris@16:       mutexes_[i].reset(new boost::asio::detail::mutex);
Chris@16:     ::CRYPTO_set_locking_callback(&do_init::openssl_locking_func);
Chris@16:     ::CRYPTO_set_id_callback(&do_init::openssl_id_func);
Chris@16: 
Chris@16: #if !defined(SSL_OP_NO_COMPRESSION) \
Chris@16:   && (OPENSSL_VERSION_NUMBER >= 0x00908000L)
Chris@16:     null_compression_methods_ = sk_SSL_COMP_new_null();
Chris@16: #endif // !defined(SSL_OP_NO_COMPRESSION)
Chris@16:        // && (OPENSSL_VERSION_NUMBER >= 0x00908000L)
Chris@16:   }
Chris@16: 
Chris@16:   ~do_init()
Chris@16:   {
Chris@16: #if !defined(SSL_OP_NO_COMPRESSION) \
Chris@16:   && (OPENSSL_VERSION_NUMBER >= 0x00908000L)
Chris@16:     sk_SSL_COMP_free(null_compression_methods_);
Chris@16: #endif // !defined(SSL_OP_NO_COMPRESSION)
Chris@16:        // && (OPENSSL_VERSION_NUMBER >= 0x00908000L)
Chris@16: 
Chris@16:     ::CRYPTO_set_id_callback(0);
Chris@16:     ::CRYPTO_set_locking_callback(0);
Chris@16:     ::ERR_free_strings();
Chris@101: #if (OPENSSL_VERSION_NUMBER >= 0x10000000L)
Chris@101:     ::ERR_remove_thread_state(NULL);
Chris@101: #else // (OPENSSL_VERSION_NUMBER >= 0x10000000L)
Chris@16:     ::ERR_remove_state(0);
Chris@101: #endif // (OPENSSL_VERSION_NUMBER >= 0x10000000L)
Chris@16:     ::EVP_cleanup();
Chris@16:     ::CRYPTO_cleanup_all_ex_data();
Chris@16:     ::CONF_modules_unload(1);
Chris@16: #if !defined(OPENSSL_NO_ENGINE)
Chris@16:     ::ENGINE_cleanup();
Chris@16: #endif // !defined(OPENSSL_NO_ENGINE)
Chris@16:   }
Chris@16: 
Chris@16: #if !defined(SSL_OP_NO_COMPRESSION) \
Chris@16:   && (OPENSSL_VERSION_NUMBER >= 0x00908000L)
Chris@16:   STACK_OF(SSL_COMP)* get_null_compression_methods() const
Chris@16:   {
Chris@16:     return null_compression_methods_;
Chris@16:   }
Chris@16: #endif // !defined(SSL_OP_NO_COMPRESSION)
Chris@16:        // && (OPENSSL_VERSION_NUMBER >= 0x00908000L)
Chris@16: 
Chris@16: private:
Chris@16:   static unsigned long openssl_id_func()
Chris@16:   {
Chris@16: #if defined(BOOST_ASIO_WINDOWS) || defined(__CYGWIN__)
Chris@16:     return ::GetCurrentThreadId();
Chris@16: #else // defined(BOOST_ASIO_WINDOWS) || defined(__CYGWIN__)
Chris@16:     void* id = instance()->thread_id_;
Chris@16:     if (id == 0)
Chris@16:       instance()->thread_id_ = id = &id; // Ugh.
Chris@16:     BOOST_ASIO_ASSERT(sizeof(unsigned long) >= sizeof(void*));
Chris@16:     return reinterpret_cast<unsigned long>(id);
Chris@16: #endif // defined(BOOST_ASIO_WINDOWS) || defined(__CYGWIN__)
Chris@16:   }
Chris@16: 
Chris@16:   static void openssl_locking_func(int mode, int n, 
Chris@16:     const char* /*file*/, int /*line*/)
Chris@16:   {
Chris@16:     if (mode & CRYPTO_LOCK)
Chris@16:       instance()->mutexes_[n]->lock();
Chris@16:     else
Chris@16:       instance()->mutexes_[n]->unlock();
Chris@16:   }
Chris@16: 
Chris@16:   // Mutexes to be used in locking callbacks.
Chris@16:   std::vector<boost::asio::detail::shared_ptr<
Chris@16:         boost::asio::detail::mutex> > mutexes_;
Chris@16: 
Chris@16: #if !defined(BOOST_ASIO_WINDOWS) && !defined(__CYGWIN__)
Chris@16:   // The thread identifiers to be used by openssl.
Chris@16:   boost::asio::detail::tss_ptr<void> thread_id_;
Chris@16: #endif // !defined(BOOST_ASIO_WINDOWS) && !defined(__CYGWIN__)
Chris@16: 
Chris@16: #if !defined(SSL_OP_NO_COMPRESSION) \
Chris@16:   && (OPENSSL_VERSION_NUMBER >= 0x00908000L)
Chris@16:   STACK_OF(SSL_COMP)* null_compression_methods_;
Chris@16: #endif // !defined(SSL_OP_NO_COMPRESSION)
Chris@16:        // && (OPENSSL_VERSION_NUMBER >= 0x00908000L)
Chris@16: };
Chris@16: 
Chris@16: boost::asio::detail::shared_ptr<openssl_init_base::do_init>
Chris@16: openssl_init_base::instance()
Chris@16: {
Chris@16:   static boost::asio::detail::shared_ptr<do_init> init(new do_init);
Chris@16:   return init;
Chris@16: }
Chris@16: 
Chris@16: #if !defined(SSL_OP_NO_COMPRESSION) \
Chris@16:   && (OPENSSL_VERSION_NUMBER >= 0x00908000L)
Chris@16: STACK_OF(SSL_COMP)* openssl_init_base::get_null_compression_methods()
Chris@16: {
Chris@16:   return instance()->get_null_compression_methods();
Chris@16: }
Chris@16: #endif // !defined(SSL_OP_NO_COMPRESSION)
Chris@16:        // && (OPENSSL_VERSION_NUMBER >= 0x00908000L)
Chris@16: 
Chris@16: } // namespace detail
Chris@16: } // namespace ssl
Chris@16: } // namespace asio
Chris@16: } // namespace boost
Chris@16: 
Chris@16: #include <boost/asio/detail/pop_options.hpp>
Chris@16: 
Chris@16: #endif // BOOST_ASIO_SSL_DETAIL_IMPL_OPENSSL_INIT_IPP