Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 1 | // Copyright (c) 2012 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 | |
| 8 | #include <Security/cssm.h> |
| 9 | |
| 10 | #include "base/basictypes.h" |
| 11 | #include "crypto/crypto_export.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 | CRYPTO_EXPORT void EnsureCSSMInit(); |
| 19 | |
| 20 | // Returns the shared CSP handle used by CSSM functions. |
| 21 | CRYPTO_EXPORT CSSM_CSP_HANDLE GetSharedCSPHandle(); |
| 22 | |
| 23 | // Returns the shared CL handle used by CSSM functions. |
| 24 | CRYPTO_EXPORT CSSM_CL_HANDLE GetSharedCLHandle(); |
| 25 | |
| 26 | // Returns the shared TP handle used by CSSM functions. |
| 27 | CRYPTO_EXPORT 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 | CRYPTO_EXPORT 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 | CRYPTO_EXPORT 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_ |