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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 {
/**
* 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_