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 #include <openssl/rsa.h> 15 16 #include "base/memory/scoped_ptr.h" 17 18 namespace crypto { 19 20 // Simplistic helper that wraps a call to a deleter function. In a C++11 world, 21 // this would be std::function<>. An alternative would be to re-use 22 // base::internal::RunnableAdapter<>, but that's far too heavy weight. 23 template <typename Type, void (*Destroyer)(Type*)> 24 struct OpenSSLDestroyer { 25 void operator()(Type* ptr) const { Destroyer(ptr); } 26 }; 27 28 template <typename PointerType, void (*Destroyer)(PointerType*)> 29 struct ScopedOpenSSL { 30 typedef scoped_ptr<PointerType, OpenSSLDestroyer<PointerType, Destroyer> > 31 Type; 32 }; 33 34 struct OpenSSLFree { 35 void operator()(uint8_t* ptr) const { OPENSSL_free(ptr); } 36 }; 37 38 // Several typedefs are provided for crypto-specific primitives, for 39 // short-hand and prevalence. Note that OpenSSL types related to X.509 are 40 // intentionally not included, as crypto/ does not generally deal with 41 // certificates or PKI. 42 typedef ScopedOpenSSL<BIGNUM, BN_free>::Type ScopedBIGNUM; 43 typedef ScopedOpenSSL<EC_KEY, EC_KEY_free>::Type ScopedEC_KEY; 44 typedef ScopedOpenSSL<BIO, BIO_free_all>::Type ScopedBIO; 45 typedef ScopedOpenSSL<DSA, DSA_free>::Type ScopedDSA; 46 typedef ScopedOpenSSL<ECDSA_SIG, ECDSA_SIG_free>::Type ScopedECDSA_SIG; 47 typedef ScopedOpenSSL<EC_KEY, EC_KEY_free>::Type ScopedEC_KEY; 48 typedef ScopedOpenSSL<EVP_MD_CTX, EVP_MD_CTX_destroy>::Type ScopedEVP_MD_CTX; 49 typedef ScopedOpenSSL<EVP_PKEY, EVP_PKEY_free>::Type ScopedEVP_PKEY; 50 typedef ScopedOpenSSL<EVP_PKEY_CTX, EVP_PKEY_CTX_free>::Type ScopedEVP_PKEY_CTX; 51 typedef ScopedOpenSSL<RSA, RSA_free>::Type ScopedRSA; 52 53 // The bytes must have been allocated with OPENSSL_malloc. 54 typedef scoped_ptr<uint8_t, OpenSSLFree> ScopedOpenSSLBytes; 55 56 } // namespace crypto 57 58 #endif // CRYPTO_SCOPED_OPENSSL_TYPES_H_ 59
