Added optional code for older OpenSSL library versions.

CMakeLists.txt

@@ -31,19 +31,31 @@ include(cmake/CheckPlatform.cmake)
 
 check_deps()
 check_dirs()
+find_package(OpenSSL)
 find_package(Valgrind)
 find_package(MySQLClient)
 find_package(MySQL)
 find_package(Pandoc)
 find_package(TCMalloc)
 find_package(Jemalloc)
+find_package(CURL) 
 # You can find the variables set by this in the FindCURL.cmake file
 # which is a default module in CMake.
-find_package(CURL) 
+
 if(NOT CURL_FOUND)
   message(FATAL_ERROR "Failed to locate dependency: libcurl")
 endif()
 
+if(NOT OPENSSL_FOUND)
+  message(FATAL_ERROR "Failed to locate dependency: OpenSSL")
+else()
+  if(OPENSSL_VERSION VERSION_LESS 1 AND NOT FORCE_OPENSSL100)
+    add_definitions("-DOPENSSL_0_9")
+  else()
+    add_definitions("-DOPENSSL_1_0")
+  endif()
+endif()
+
 set(CMAKE_INSTALL_RPATH ${CMAKE_INSTALL_RPATH}:${CMAKE_INSTALL_PREFIX}/${MAXSCALE_LIBDIR})
 
 # Make sure the release notes for this release are present if it is a stable one

server/core/gateway.c

@@ -263,6 +263,15 @@ static void ssl_free_dynlock(struct CRYPTO_dynlock_value * n,const char* file, i
     free(n);
 }
 
+/**
+ * The thread ID callback function for OpenSSL dynamic locks.
+ * @param id Id to modify
+ */
+static void maxscale_ssl_id(CRYPTO_THREADID* id)
+{
+    CRYPTO_THREADID_set_numeric(id,pthread_self());
+}
+
 /**
  * Handler for SIGHUP signal. Reload the configuration for the
  * gateway.
@@ -1459,8 +1468,11 @@ int main(int argc, char **argv)
 	CRYPTO_set_dynlock_create_callback(ssl_create_dynlock);
 	CRYPTO_set_dynlock_destroy_callback(ssl_free_dynlock);
 	CRYPTO_set_dynlock_lock_callback(ssl_lock_dynlock);
+#ifdef OPENSSL_1_0
+	CRYPTO_THREADID_set_callback(maxscale_ssl_id);
+#else
 	CRYPTO_set_id_callback(pthread_self);
-
+#endif
 	/* register exit function for embedded MySQL library */
         l = atexit(libmysqld_done);