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// Copyright (c) 2011 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.
#include "crypto/capi_util.h"
#include "base/basictypes.h"
#include "base/memory/singleton.h"
#include "base/synchronization/lock.h"
namespace {
class CAPIUtilSingleton {
public:
static CAPIUtilSingleton* GetInstance() {
return Singleton<CAPIUtilSingleton>::get();
}
// Returns a lock to guard calls to CryptAcquireContext with
// CRYPT_DELETEKEYSET or CRYPT_NEWKEYSET.
base::Lock& acquire_context_lock() {
return acquire_context_lock_;
}
private:
friend class Singleton<CAPIUtilSingleton>;
friend struct DefaultSingletonTraits<CAPIUtilSingleton>;
CAPIUtilSingleton() {}
base::Lock acquire_context_lock_;
DISALLOW_COPY_AND_ASSIGN(CAPIUtilSingleton);
};
} // namespace
namespace crypto {
BOOL CryptAcquireContextLocked(HCRYPTPROV* prov,
LPCWSTR container,
LPCWSTR provider,
DWORD prov_type,
DWORD flags) {
base::AutoLock lock(CAPIUtilSingleton::GetInstance()->acquire_context_lock());
return CryptAcquireContext(prov, container, provider, prov_type, flags);
}
} // namespace crypto
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