add boost on mac

macx64/include/boost/uuid/detail/random_provider_wincrypt.ipp

@@ -0,0 +1,109 @@
+/* boost uuid/detail/random_provider_wincrypt implementation
+*
+* Copyright Jens Maurer 2000
+* Copyright 2007 Andy Tompkins.
+* Copyright Steven Watanabe 2010-2011
+* Copyright 2017 James E. King III
+*
+* 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)
+*
+* $Id$
+*/
+
+#include <cstddef>
+#include <boost/config.hpp>
+#include <boost/core/ignore_unused.hpp>
+#include <boost/move/core.hpp>
+#include <boost/numeric/conversion/cast.hpp>
+#include <boost/winapi/crypt.hpp>
+#include <boost/winapi/get_last_error.hpp>
+#include <boost/throw_exception.hpp>
+
+#if defined(BOOST_UUID_FORCE_AUTO_LINK) || (!defined(BOOST_ALL_NO_LIB) && !defined(BOOST_UUID_RANDOM_PROVIDER_NO_LIB))
+#   if defined(_WIN32_WCE)
+#      define BOOST_LIB_NAME "coredll"
+#   else
+#      define BOOST_LIB_NAME "advapi32"
+#   endif
+#   define BOOST_AUTO_LINK_NOMANGLE
+#   include <boost/config/auto_link.hpp>
+#   undef BOOST_AUTO_LINK_NOMANGLE
+#endif
+
+namespace boost {
+namespace uuids {
+namespace detail {
+
+class random_provider_base
+{
+    BOOST_MOVABLE_BUT_NOT_COPYABLE(random_provider_base)
+
+public:
+    random_provider_base()
+        : hProv_(0)
+    {
+        boost::winapi::BOOL_ res = boost::winapi::CryptAcquireContextW(
+            &hProv_,
+            NULL,
+            NULL,
+            boost::winapi::PROV_RSA_FULL_,
+            boost::winapi::CRYPT_VERIFYCONTEXT_ | boost::winapi::CRYPT_SILENT_);
+        if (BOOST_UNLIKELY(!res))
+        {
+            boost::winapi::DWORD_ err = boost::winapi::GetLastError();
+            BOOST_THROW_EXCEPTION(entropy_error(err, "CryptAcquireContext"));
+        }
+    }
+
+    random_provider_base(BOOST_RV_REF(random_provider_base) that) BOOST_NOEXCEPT : hProv_(that.hProv_)
+    {
+        that.hProv_ = 0;
+    }
+
+    random_provider_base& operator= (BOOST_RV_REF(random_provider_base) that) BOOST_NOEXCEPT
+    {
+        destroy();
+        hProv_ = that.hProv_;
+        that.hProv_ = 0;
+        return *this;
+    }
+
+    ~random_provider_base() BOOST_NOEXCEPT
+    {
+        destroy();
+    }
+
+    //! Obtain entropy and place it into a memory location
+    //! \param[in]  buf  the location to write entropy
+    //! \param[in]  siz  the number of bytes to acquire
+    void get_random_bytes(void *buf, std::size_t siz)
+    {
+        boost::winapi::BOOL_ res = boost::winapi::CryptGenRandom(
+            hProv_,
+            boost::numeric_cast<boost::winapi::DWORD_>(siz),
+            static_cast<boost::winapi::BYTE_ *>(buf));
+        if (BOOST_UNLIKELY(!res))
+        {
+            boost::winapi::DWORD_ err = boost::winapi::GetLastError();
+            BOOST_THROW_EXCEPTION(entropy_error(err, "CryptGenRandom"));
+        }
+    }
+
+private:
+    void destroy() BOOST_NOEXCEPT
+    {
+        if (hProv_)
+        {
+            boost::ignore_unused(boost::winapi::CryptReleaseContext(hProv_, 0));
+        }
+    }
+
+private:
+    boost::winapi::HCRYPTPROV_ hProv_;
+};
+
+} // detail
+} // uuids
+} // boost