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47 lines
1.4 KiB
C
47 lines
1.4 KiB
C
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// Copyright 2024 The Chromium Authors
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef CRYPTO_SCOPED_LACONTEXT_H_
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#define CRYPTO_SCOPED_LACONTEXT_H_
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#if defined(__OBJC__)
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#import <LocalAuthentication/LocalAuthentication.h>
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#endif // defined(__OBJC__)
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#include <memory>
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#include "crypto/crypto_export.h"
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namespace crypto {
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// ScopedLAContext can hold an `LAContext` and is safe to pass around from C++.
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// ScopedLAContext functions as a unique pointer. The UI can create one with an
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// authenticated LAContext, then pass it down to the platform.
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class CRYPTO_EXPORT ScopedLAContext {
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public:
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#if defined(__OBJC__)
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// Takes ownership of |lacontext|.
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explicit ScopedLAContext(LAContext* lacontext);
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#endif // defined(__OBJC__)
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~ScopedLAContext();
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ScopedLAContext(ScopedLAContext&) = delete;
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ScopedLAContext(ScopedLAContext&&);
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ScopedLAContext& operator=(const ScopedLAContext&) = delete;
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ScopedLAContext& operator=(ScopedLAContext&&);
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#if defined(__OBJC__)
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// release returns the last `LAContext` passed on construction and drops its
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// reference to it. It is invalid to to call release more than once.
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LAContext* release();
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#endif // defined(__OBJC__)
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private:
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struct ObjCStorage;
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std::unique_ptr<ObjCStorage> storage_;
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};
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} // namespace crypto
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#endif // CRYPTO_SCOPED_LACONTEXT_H_
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