1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "crypto/capi_util.h" 6 7 #include "base/basictypes.h" 8 #include "base/memory/singleton.h" 9 #include "base/synchronization/lock.h" 10 11 namespace { 12 13 class CAPIUtilSingleton { 14 public: 15 static CAPIUtilSingleton* GetInstance() { 16 return Singleton<CAPIUtilSingleton>::get(); 17 } 18 19 // Returns a lock to guard calls to CryptAcquireContext with 20 // CRYPT_DELETEKEYSET or CRYPT_NEWKEYSET. 21 base::Lock& acquire_context_lock() { 22 return acquire_context_lock_; 23 } 24 25 private: 26 friend class Singleton<CAPIUtilSingleton>; 27 friend struct DefaultSingletonTraits<CAPIUtilSingleton>; 28 29 CAPIUtilSingleton() {} 30 31 base::Lock acquire_context_lock_; 32 33 DISALLOW_COPY_AND_ASSIGN(CAPIUtilSingleton); 34 }; 35 36 } // namespace 37 38 namespace crypto { 39 40 BOOL CryptAcquireContextLocked(HCRYPTPROV* prov, 41 LPCWSTR container, 42 LPCWSTR provider, 43 DWORD prov_type, 44 DWORD flags) { 45 base::AutoLock lock(CAPIUtilSingleton::GetInstance()->acquire_context_lock()); 46 return CryptAcquireContext(prov, container, provider, prov_type, flags); 47 } 48 49 void* WINAPI CryptAlloc(size_t size) { 50 return malloc(size); 51 } 52 53 void WINAPI CryptFree(void* p) { 54 free(p); 55 } 56 57 } // namespace crypto 58
