add PKCS#11 support

1 files changed, 79 insertions, 0 deletions

diff --git a/src/lib/prov/pkcs11/p11_module.h b/src/lib/prov/pkcs11/p11_module.h
new file mode 100644
index 000000000..990458a4d
--- /dev/null
+++ b/src/lib/prov/pkcs11/p11_module.h
@@ -0,0 +1,79 @@
+/*
+* PKCS#11 Module
+* (C) 2016 Daniel Neus, Sirrix AG
+* (C) 2016 Philipp Weber, Sirrix AG
+*
+* Botan is released under the Simplified BSD License (see license.txt)
+*/
+
+#ifndef BOTAN_P11_MODULE_H__
+#define BOTAN_P11_MODULE_H__
+
+#include <string>
+#include <memory>
+
+#include <botan/p11.h>
+#include <botan/dyn_load.h>
+
+namespace Botan {
+namespace PKCS11 {
+
+/**
+* Loads the PKCS#11 shared library
+* Calls C_Initialize on load and C_Finalize on destruction
+*/
+class BOTAN_DLL Module final
+   {
+   public:
+      /**
+      * Loads the shared library and calls C_Initialize
+      * @param file_path the path to the PKCS#11 shared library
+      * @param init_args flags to use for `C_Initialize`
+      */
+      Module(const std::string& file_path, C_InitializeArgs init_args = { nullptr, nullptr, nullptr, nullptr, static_cast< CK_FLAGS >(Flag::OsLockingOk), nullptr });
+
+/* Microsoft Visual Studio <= 2013 does not support default generated move special member functions.
+   Everything else we target should support it */
+#if !defined( _MSC_VER ) || ( _MSC_VER >= 1900 )
+      Module(Module&& other) = default;
+      Module& operator=(Module&& other) = default;
+#endif
+
+      // Dtor calls C_Finalize(). A copy could be deleted while the origin still exists
+      // Furthermore std::unique_ptr member -> not copyable
+      Module(const Module& other) = delete;
+      Module& operator=(const Module& other) = delete;
+
+      /// Calls C_Finalize()
+      ~Module() BOTAN_NOEXCEPT;
+
+      /**
+      * Reloads the module and reinitializes it
+      * @param init_args flags to use for `C_Initialize`
+      */
+      void reload(C_InitializeArgs init_args = { nullptr, nullptr, nullptr, nullptr, static_cast< CK_FLAGS >(Flag::OsLockingOk), nullptr });
+
+      inline LowLevel* operator->() const
+         {
+         return m_low_level.get();
+         }
+
+      /// @return general information about Cryptoki
+      inline Info get_info() const
+         {
+         Info info;
+         m_low_level->C_GetInfo(&info);
+         return info;
+         }
+
+   private:
+      const std::string m_file_path;
+      FunctionListPtr m_func_list = nullptr;
+      std::unique_ptr<Dynamically_Loaded_Library> m_library = nullptr;
+      std::unique_ptr<LowLevel> m_low_level = nullptr;
+   };
+
+}
+}
+
+#endif