Bug 1570501 - Add AES-CMAC implementation to freebl, r=mt

Differential Revision: https://phabricator.services.mozilla.com/D40120

1 files changed, 33 insertions, 0 deletions

diff --git a/cpputil/freebl_scoped_ptrs.h b/cpputil/freebl_scoped_ptrs.h
new file mode 100644
index 000000000..2f21ca903
--- /dev/null
+++ b/cpputil/freebl_scoped_ptrs.h
@@ -0,0 +1,33 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef freebl_scoped_ptrs_h__
+#define freebl_scoped_ptrs_h__
+
+#include <memory>
+#include "blapi.h"
+
+struct ScopedDelete {
+  void operator()(CMACContext* ctx) { CMAC_Destroy(ctx, PR_TRUE); }
+};
+
+template <class T>
+struct ScopedMaybeDelete {
+  void operator()(T* ptr) {
+    if (ptr) {
+      ScopedDelete del;
+      del(ptr);
+    }
+  }
+};
+
+#define SCOPED(x) typedef std::unique_ptr<x, ScopedMaybeDelete<x> > Scoped##x
+
+SCOPED(CMACContext);
+
+#undef SCOPED
+
+#endif  // freebl_scoped_ptrs_h__