[MacOSX] Manage older OpenSSL API (needed for OSX 10.6) and probably older linuxes

=== modified file 'boost/asio/ssl/impl/context.ipp'

--- boost/asio/ssl/impl/context.ipp	2013-12-30 14:53:15 +0000

+++ boost/asio/ssl/impl/context.ipp	2013-12-30 19:08:01 +0000

@@ -236,19 +236,27 @@

 boost::system::error_code context::clear_options(

     context::options o, boost::system::error_code& ec)

 {

-#if !defined(SSL_OP_NO_COMPRESSION)

+#if (OPENSSL_VERSION_NUMBER >= 0x009080DFL) \

+  && (OPENSSL_VERSION_NUMBER != 0x00909000L)

+# if !defined(SSL_OP_NO_COMPRESSION)

   if ((o & context::no_compression) != 0)

   {

-#if (OPENSSL_VERSION_NUMBER >= 0x00908000L)

+# if (OPENSSL_VERSION_NUMBER >= 0x00908000L)

     handle_->comp_methods = SSL_COMP_get_compression_methods();

-#endif // (OPENSSL_VERSION_NUMBER >= 0x00908000L)

+# endif // (OPENSSL_VERSION_NUMBER >= 0x00908000L)

     o ^= context::no_compression;

   }

-#endif // !defined(SSL_OP_NO_COMPRESSION)

+# endif // !defined(SSL_OP_NO_COMPRESSION)

   ::SSL_CTX_clear_options(handle_, o);

   ec = boost::system::error_code();

+#else // (OPENSSL_VERSION_NUMBER >= 0x009080DFL)

+      //   && (OPENSSL_VERSION_NUMBER != 0x00909000L)

+  (void)o;

+  ec = boost::asio::error::operation_not_supported;

+#endif // (OPENSSL_VERSION_NUMBER >= 0x009080DFL)

+       //   && (OPENSSL_VERSION_NUMBER != 0x00909000L)

   return ec;

 }

@@ -428,7 +436,8 @@

   if (format == context_base::asn1)

   {

-    if (::SSL_CTX_use_certificate_ASN1(handle_, buffer_size(certificate),

+    if (::SSL_CTX_use_certificate_ASN1(handle_,

+          static_cast<int>(buffer_size(certificate)),

           buffer_cast<const unsigned char*>(certificate)) == 1)

     {

       ec = boost::system::error_code();

@@ -929,7 +938,7 @@

 {

   return ::BIO_new_mem_buf(

       const_cast<void*>(buffer_cast<const void*>(b)),

-      buffer_size(b));

+      static_cast<int>(buffer_size(b)));

 }

 #endif // !defined(BOOST_ASIO_ENABLE_OLD_SSL)