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-rw-r--r--dom/media/PrincipalHandle.h62
1 files changed, 62 insertions, 0 deletions
diff --git a/dom/media/PrincipalHandle.h b/dom/media/PrincipalHandle.h
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+++ b/dom/media/PrincipalHandle.h
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+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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 DOM_MEDIA_PRINCIPALHANDLE_H_
+#define DOM_MEDIA_PRINCIPALHANDLE_H_
+
+#include "nsIPrincipal.h"
+#include "nsProxyRelease.h"
+
+namespace mozilla {
+/**
+ * The level of privacy of a principal as considered by RTCPeerConnection.
+ */
+enum class PrincipalPrivacy : uint8_t { Private, NonPrivate };
+
+/**
+ * We pass the principal through the MediaTrackGraph by wrapping it in a thread
+ * safe nsMainThreadPtrHandle, since it cannot be used directly off the main
+ * thread. We can compare two PrincipalHandles to each other on any thread, but
+ * they can only be created and converted back to nsIPrincipal* on main thread.
+ */
+typedef nsMainThreadPtrHandle<nsIPrincipal> PrincipalHandle;
+
+inline PrincipalHandle MakePrincipalHandle(nsIPrincipal* aPrincipal) {
+ RefPtr<nsMainThreadPtrHolder<nsIPrincipal>> holder =
+ new nsMainThreadPtrHolder<nsIPrincipal>(
+ "MakePrincipalHandle::nsIPrincipal", aPrincipal);
+ return PrincipalHandle(holder);
+}
+
+#define PRINCIPAL_HANDLE_NONE nullptr
+
+inline nsIPrincipal* GetPrincipalFromHandle(
+ const PrincipalHandle& aPrincipalHandle) {
+ MOZ_ASSERT(NS_IsMainThread());
+ return aPrincipalHandle.get();
+}
+
+inline bool PrincipalHandleMatches(const PrincipalHandle& aPrincipalHandle,
+ nsIPrincipal* aOther) {
+ if (!aOther) {
+ return false;
+ }
+
+ nsIPrincipal* principal = GetPrincipalFromHandle(aPrincipalHandle);
+ if (!principal) {
+ return false;
+ }
+
+ bool result;
+ if (NS_FAILED(principal->Equals(aOther, &result))) {
+ NS_ERROR("Principal check failed");
+ return false;
+ }
+
+ return result;
+}
+} // namespace mozilla
+
+#endif // DOM_MEDIA_PRINCIPALHANDLE_H_