1ddb351dbec246cf1fab5ec20d2d5520909041de1Kristian Monsen// Copyright (c) 2011 The Chromium Authors. All rights reserved. 2c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch// Use of this source code is governed by a BSD-style license that can be 3c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch// found in the LICENSE file. 4c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 5ddb351dbec246cf1fab5ec20d2d5520909041de1Kristian Monsen#include "crypto/capi_util.h" 6c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 7c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include "base/basictypes.h" 8ddb351dbec246cf1fab5ec20d2d5520909041de1Kristian Monsen#include "base/memory/singleton.h" 972a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen#include "base/synchronization/lock.h" 10c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 11c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochnamespace { 12c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 13c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochclass CAPIUtilSingleton { 14c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch public: 15c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch static CAPIUtilSingleton* GetInstance() { 16c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch return Singleton<CAPIUtilSingleton>::get(); 17c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 18c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 19c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Returns a lock to guard calls to CryptAcquireContext with 20c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // CRYPT_DELETEKEYSET or CRYPT_NEWKEYSET. 2172a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen base::Lock& acquire_context_lock() { 22c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch return acquire_context_lock_; 23c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 24c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 25c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch private: 26c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch friend class Singleton<CAPIUtilSingleton>; 27c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch friend struct DefaultSingletonTraits<CAPIUtilSingleton>; 28c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 29c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch CAPIUtilSingleton() {} 30c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 3172a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen base::Lock acquire_context_lock_; 32c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 33c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch DISALLOW_COPY_AND_ASSIGN(CAPIUtilSingleton); 34c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch}; 35c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 36c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} // namespace 37c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 38ddb351dbec246cf1fab5ec20d2d5520909041de1Kristian Monsennamespace crypto { 39c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 40c407dc5cd9bdc5668497f21b26b09d988ab439deBen MurdochBOOL CryptAcquireContextLocked(HCRYPTPROV* prov, 41731df977c0511bca2206b5f333555b1205ff1f43Iain Merrick LPCWSTR container, 42731df977c0511bca2206b5f333555b1205ff1f43Iain Merrick LPCWSTR provider, 43c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch DWORD prov_type, 44ddb351dbec246cf1fab5ec20d2d5520909041de1Kristian Monsen DWORD flags) { 4572a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen base::AutoLock lock(CAPIUtilSingleton::GetInstance()->acquire_context_lock()); 46c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch return CryptAcquireContext(prov, container, provider, prov_type, flags); 47c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 48c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 49ddb351dbec246cf1fab5ec20d2d5520909041de1Kristian Monsen} // namespace crypto 50