Luis Hector Chavez | e5b2c6f | 2017-07-26 17:33:47 +0000 | [diff] [blame] | 1 | // Copyright 2014 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_SCOPED_OPENSSL_TYPES_H_ |
| 6 | #define CRYPTO_SCOPED_OPENSSL_TYPES_H_ |
| 7 | |
| 8 | #include <openssl/bio.h> |
| 9 | #include <openssl/bn.h> |
| 10 | #include <openssl/dsa.h> |
| 11 | #include <openssl/ec.h> |
| 12 | #include <openssl/ecdsa.h> |
| 13 | #include <openssl/evp.h> |
| 14 | #ifdef OPENSSL_IS_BORINGSSL |
| 15 | #include <openssl/mem.h> |
| 16 | #endif |
| 17 | #include <openssl/rsa.h> |
| 18 | #include <stdint.h> |
| 19 | |
| 20 | #include <memory> |
| 21 | |
| 22 | namespace crypto { |
| 23 | |
| 24 | // Simplistic helper that wraps a call to a deleter function. In a C++11 world, |
| 25 | // this would be std::function<>. An alternative would be to re-use |
| 26 | // base::internal::RunnableAdapter<>, but that's far too heavy weight. |
| 27 | template <typename Type, void (*Destroyer)(Type*)> |
| 28 | struct OpenSSLDestroyer { |
| 29 | void operator()(Type* ptr) const { Destroyer(ptr); } |
| 30 | }; |
| 31 | |
| 32 | template <typename PointerType, void (*Destroyer)(PointerType*)> |
| 33 | using ScopedOpenSSL = |
| 34 | std::unique_ptr<PointerType, OpenSSLDestroyer<PointerType, Destroyer>>; |
| 35 | |
| 36 | struct OpenSSLFree { |
| 37 | void operator()(uint8_t* ptr) const { OPENSSL_free(ptr); } |
| 38 | }; |
| 39 | |
| 40 | // Several typedefs are provided for crypto-specific primitives, for |
| 41 | // short-hand and prevalence. Note that OpenSSL types related to X.509 are |
| 42 | // intentionally not included, as crypto/ does not generally deal with |
| 43 | // certificates or PKI. |
| 44 | using ScopedBIGNUM = ScopedOpenSSL<BIGNUM, BN_free>; |
| 45 | using ScopedEC_Key = ScopedOpenSSL<EC_KEY, EC_KEY_free>; |
| 46 | using ScopedBIO = ScopedOpenSSL<BIO, BIO_free_all>; |
| 47 | using ScopedDSA = ScopedOpenSSL<DSA, DSA_free>; |
| 48 | using ScopedECDSA_SIG = ScopedOpenSSL<ECDSA_SIG, ECDSA_SIG_free>; |
| 49 | using ScopedEC_GROUP = ScopedOpenSSL<EC_GROUP, EC_GROUP_free>; |
| 50 | using ScopedEC_KEY = ScopedOpenSSL<EC_KEY, EC_KEY_free>; |
| 51 | using ScopedEC_POINT = ScopedOpenSSL<EC_POINT, EC_POINT_free>; |
| 52 | using ScopedEVP_MD_CTX = ScopedOpenSSL<EVP_MD_CTX, EVP_MD_CTX_destroy>; |
| 53 | using ScopedEVP_PKEY = ScopedOpenSSL<EVP_PKEY, EVP_PKEY_free>; |
| 54 | using ScopedEVP_PKEY_CTX = ScopedOpenSSL<EVP_PKEY_CTX, EVP_PKEY_CTX_free>; |
| 55 | using ScopedRSA = ScopedOpenSSL<RSA, RSA_free>; |
| 56 | |
| 57 | // The bytes must have been allocated with OPENSSL_malloc. |
| 58 | using ScopedOpenSSLBytes = std::unique_ptr<uint8_t, OpenSSLFree>; |
| 59 | |
| 60 | } // namespace crypto |
| 61 | |
| 62 | #endif // CRYPTO_SCOPED_OPENSSL_TYPES_H_ |