1 files changed, 53 insertions, 0 deletions
diff --git a/src/utils/dyn_load/dyn_load.cpp b/src/utils/dyn_load/dyn_load.cpp
new file mode 100644
index 000000000..621737d0c
--- /dev/null
+++ b/src/utils/dyn_load/dyn_load.cpp
@@ -0,0 +1,53 @@
+/**
+* Dynamically Loaded Object
+* (C) 2010 Jack Lloyd
+*
+* Distributed under the terms of the Botan license
+*/
+
+#include <botan/internal/dyn_load.h>
+#include <botan/build.h>
+#include <stdexcept>
+
+#if defined(BOTAN_TARGET_OS_HAS_DLOPEN)
+  #include <dlfcn.h>
+#endif
+
+namespace Botan {
+
+Dynamically_Loaded_Library::Dynamically_Loaded_Library(
+   const std::string& library) :
+   lib_name(library), lib(0)
+   {
+#if defined(BOTAN_TARGET_OS_HAS_DLOPEN)
+   lib = ::dlopen(lib_name.c_str(), RTLD_LAZY);
+
+   if(!lib)
+      throw std::runtime_error("Failed to load engine " + lib_name);
+#endif
+
+   }
+
+Dynamically_Loaded_Library::~Dynamically_Loaded_Library()
+   {
+#if defined(BOTAN_TARGET_OS_HAS_DLOPEN)
+   ::dlclose(lib);
+#endif
+   }
+
+void* Dynamically_Loaded_Library::resolve_symbol(const std::string& symbol)
+   {
+   void* addr = 0;
+
+#if defined(BOTAN_TARGET_OS_HAS_DLOPEN)
+   addr = ::dlsym(lib, symbol.c_str());
+#endif
+
+   if(!addr)
+      throw std::runtime_error("Failed to resolve symbol " + symbol +
+                               " in " + lib_name);
+
+   return addr;
+   }
+
+}