A local copy of OpenSSL from GitHub
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/*
* Copyright 1998-2001 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#ifndef OSSL_TEST_SHIM_INCLUDE_OPENSSL_BASE_H
#define OSSL_TEST_SHIM_INCLUDE_OPENSSL_BASE_H
/* Needed for DH functions */
#include "internal/deprecated.h"
/* Needed for BORINGSSL_MAKE_DELETER */
# include <openssl/bio.h>
# include <openssl/evp.h>
# include <openssl/dh.h>
# include <openssl/x509.h>
# include <openssl/ssl.h>
# define OPENSSL_ARRAY_SIZE(array) (sizeof(array) / sizeof((array)[0]))
extern "C++" {
#include <memory>
namespace bssl {
namespace internal {
template <typename T>
struct DeleterImpl {};
template <typename T>
struct Deleter {
void operator()(T *ptr) {
// Rather than specialize Deleter for each type, we specialize
// DeleterImpl. This allows bssl::UniquePtr<T> to be used while only
// including base.h as long as the destructor is not emitted. This matches
// std::unique_ptr's behavior on forward-declared types.
//
// DeleterImpl itself is specialized in the corresponding module's header
// and must be included to release an object. If not included, the compiler
// will error that DeleterImpl<T> does not have a method Free.
DeleterImpl<T>::Free(ptr);
}
};
template <typename T, typename CleanupRet, void (*init)(T *),
CleanupRet (*cleanup)(T *)>
class StackAllocated {
public:
StackAllocated() { init(&ctx_); }
~StackAllocated() { cleanup(&ctx_); }
StackAllocated(const StackAllocated<T, CleanupRet, init, cleanup> &) = delete;
T& operator=(const StackAllocated<T, CleanupRet, init, cleanup> &) = delete;
T *get() { return &ctx_; }
const T *get() const { return &ctx_; }
void Reset() {
cleanup(&ctx_);
init(&ctx_);
}
private:
T ctx_;
};
} // namespace internal
#define BORINGSSL_MAKE_DELETER(type, deleter) \
namespace internal { \
template <> \
struct DeleterImpl<type> { \
static void Free(type *ptr) { deleter(ptr); } \
}; \
}
// This makes a unique_ptr to STACK_OF(type) that owns all elements on the
// stack, i.e. it uses sk_pop_free() to clean up.
#define BORINGSSL_MAKE_STACK_DELETER(type, deleter) \
namespace internal { \
template <> \
struct DeleterImpl<STACK_OF(type)> { \
static void Free(STACK_OF(type) *ptr) { \
sk_##type##_pop_free(ptr, deleter); \
} \
}; \
}
// Holds ownership of heap-allocated BoringSSL structures. Sample usage:
// bssl::UniquePtr<BIO> rsa(RSA_new());
// bssl::UniquePtr<BIO> bio(BIO_new(BIO_s_mem()));
template <typename T>
using UniquePtr = std::unique_ptr<T, internal::Deleter<T>>;
BORINGSSL_MAKE_DELETER(BIO, BIO_free)
BORINGSSL_MAKE_DELETER(EVP_PKEY, EVP_PKEY_free)
BORINGSSL_MAKE_DELETER(DH, DH_free)
BORINGSSL_MAKE_DELETER(X509, X509_free)
BORINGSSL_MAKE_DELETER(SSL, SSL_free)
BORINGSSL_MAKE_DELETER(SSL_CTX, SSL_CTX_free)
BORINGSSL_MAKE_DELETER(SSL_SESSION, SSL_SESSION_free)
} // namespace bssl
} /* extern C++ */
#endif /* OSSL_TEST_SHIM_INCLUDE_OPENSSL_BASE_H */