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-rw-r--r--sync/engine/cryptographer_provider.h64
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diff --git a/sync/engine/cryptographer_provider.h b/sync/engine/cryptographer_provider.h
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--- a/sync/engine/cryptographer_provider.h
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-// Copyright 2014 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef SYNC_ENGINE_CRYPTOGRAPHER_PROVIDER_H_
-#define SYNC_ENGINE_CRYPTOGRAPHER_PROVIDER_H_
-
-#include "base/memory/scoped_ptr.h"
-#include "sync/base/sync_export.h"
-
-namespace syncer {
-
-class Cryptographer;
-class ScopedCryptographerRef;
-class ScopedCryptographerInternal;
-
-// An interface for providing clients with a ScopedCryptographerRef.
-//
-// Used to expose the syncable::Directory's cryptographer to clients that
-// would otherwise not have access to the Directory.
-class SYNC_EXPORT_PRIVATE CryptographerProvider {
- public:
- CryptographerProvider();
- virtual ~CryptographerProvider();
-
- virtual bool InitScopedCryptographerRef(ScopedCryptographerRef* scoped) = 0;
-};
-
-// A concrete class representing a reference to a cryptographer.
-//
-// Access to the cryptographer is lost when this class goes out of scope.
-class SYNC_EXPORT_PRIVATE ScopedCryptographerRef {
- public:
- ScopedCryptographerRef();
- ~ScopedCryptographerRef();
-
- bool Initialize(ScopedCryptographerInternal* impl);
- bool IsValid() const;
- Cryptographer* Get() const;
-
- private:
- scoped_ptr<ScopedCryptographerInternal> scoped_cryptographer_internal_;
-
- DISALLOW_COPY_AND_ASSIGN(ScopedCryptographerRef);
-};
-
-// An interface class used in the implementation of the ScopedCryptographerRef.
-//
-// We use this class to allow different implementations of
-// CryptographerProvider to implement InitScopedCryptographer in different
-// ways. The ScopedCryptographerRef itself must be stack-allocated, so it
-// can't vary depending on which kind of CryptographerProvider is used to
-// intialize it.
-class SYNC_EXPORT_PRIVATE ScopedCryptographerInternal {
- public:
- ScopedCryptographerInternal();
- virtual ~ScopedCryptographerInternal();
-
- virtual Cryptographer* Get() const = 0;
-};
-
-} // namespace syncer
-
-#endif // SYNC_ENGINE_CRYPTOGRAPHER_PROVIDER_H_