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| 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 #ifndef CRYPTO_CSSM_INIT_H_ |
| 6 #define CRYPTO_CSSM_INIT_H_ |
| 7 #pragma once |
| 8 |
| 9 #include <Security/cssm.h> |
| 10 |
| 11 #include "base/basictypes.h" |
| 12 |
| 13 namespace crypto { |
| 14 |
| 15 // Initialize CSSM if it isn't already initialized. This must be called before |
| 16 // any other CSSM functions. This function is thread-safe, and CSSM will only |
| 17 // ever be initialized once. CSSM will be properly shut down on program exit. |
| 18 void EnsureCSSMInit(); |
| 19 |
| 20 // Returns the shared CSP handle used by CSSM functions. |
| 21 CSSM_CSP_HANDLE GetSharedCSPHandle(); |
| 22 |
| 23 // Returns the shared CL handle used by CSSM functions. |
| 24 CSSM_CL_HANDLE GetSharedCLHandle(); |
| 25 |
| 26 // Returns the shared TP handle used by CSSM functions. |
| 27 CSSM_TP_HANDLE GetSharedTPHandle(); |
| 28 |
| 29 // Set of pointers to memory function wrappers that are required for CSSM |
| 30 extern const CSSM_API_MEMORY_FUNCS kCssmMemoryFunctions; |
| 31 |
| 32 // Utility function to log an error message including the error name. |
| 33 void LogCSSMError(const char *function_name, CSSM_RETURN err); |
| 34 |
| 35 // Utility functions to allocate and release CSSM memory. |
| 36 void* CSSMMalloc(CSSM_SIZE size); |
| 37 void CSSMFree(void* ptr); |
| 38 |
| 39 // Wrapper class for CSSM_DATA type. This should only be used when using the |
| 40 // CL/TP/CSP handles from above, since that's the only time we're guaranteed (or |
| 41 // supposed to be guaranteed) that our memory management functions will be used. |
| 42 // Apple's Sec* APIs manage their own memory so it shouldn't be used for those. |
| 43 // The constructor initializes data_ to zero and the destructor releases the |
| 44 // data properly. |
| 45 class ScopedCSSMData { |
| 46 public: |
| 47 ScopedCSSMData(); |
| 48 ~ScopedCSSMData(); |
| 49 operator CSSM_DATA*() { return &data_; } |
| 50 CSSM_DATA* operator ->() { return &data_; } |
| 51 |
| 52 private: |
| 53 CSSM_DATA data_; |
| 54 |
| 55 DISALLOW_COPY_AND_ASSIGN(ScopedCSSMData); |
| 56 }; |
| 57 |
| 58 } // namespace crypto |
| 59 |
| 60 #endif // CRYPTO_CSSM_INIT_H_ |
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