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| 1 // Copyright 2016 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_AUTO_CBB_H_ |
| 6 #define CRYPTO_AUTO_CBB_H_ |
| 7 |
| 8 #include <openssl/bytestring.h> |
| 9 |
| 10 #include "base/macros.h" |
| 11 |
| 12 namespace crypto { |
| 13 |
| 14 // AutoCBB is a wrapper over OpenSSL's CBB type that automatically releases |
| 15 // resources when going out of scope. |
| 16 class AutoCBB { |
| 17 public: |
| 18 AutoCBB() { CBB_zero(&cbb_); } |
| 19 ~AutoCBB() { CBB_cleanup(&cbb_); } |
| 20 |
| 21 CBB* get() { return &cbb_; } |
| 22 |
| 23 void Reset() { |
| 24 CBB_cleanup(&cbb_); |
| 25 CBB_zero(&cbb_); |
| 26 } |
| 27 |
| 28 private: |
| 29 CBB cbb_; |
| 30 DISALLOW_COPY_AND_ASSIGN(AutoCBB); |
| 31 }; |
| 32 |
| 33 } // namespace crypto |
| 34 |
| 35 #endif // CRYPTO_AUTO_CBB_H_ |
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