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/*
* Copyright 2018 The WebRTC Project Authors. All rights reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#ifndef RTC_BASE_OPENSSL_UTILITY_H_
#define RTC_BASE_OPENSSL_UTILITY_H_
#include <openssl/ossl_typ.h>
#include <string>
#include "absl/strings/string_view.h"
namespace rtc {
// The openssl namespace holds static helper methods. All methods related
// to OpenSSL that are commonly used and don't require global state should be
// placed here.
namespace openssl {
#ifdef OPENSSL_IS_BORINGSSL
// Does minimal parsing of a certificate (only verifying the presence of major
// fields), primarily for the purpose of extracting the relevant out
// parameters. Any that the caller is uninterested in can be null.
bool ParseCertificate(CRYPTO_BUFFER* cert_buffer,
CBS* signature_algorithm_oid,
int64_t* expiration_time);
#endif
// Verifies that the hostname provided matches that in the peer certificate
// attached to this SSL state.
// TODO(crbug.com/webrtc/11710): When OS certificate verification is available,
// skip compiling this as it adds a dependency on OpenSSL X509 objects, which we
// are trying to avoid in favor of CRYPTO_BUFFERs (see crbug.com/webrtc/11410).
bool VerifyPeerCertMatchesHost(SSL* ssl, absl::string_view host);
// Logs all the errors in the OpenSSL errror queue from the current thread. A
// prefix can be provided for context.
void LogSSLErrors(absl::string_view prefix);
#ifndef WEBRTC_EXCLUDE_BUILT_IN_SSL_ROOT_CERTS
// Attempt to add the certificates from the loader into the SSL_CTX. False is
// returned only if there are no certificates returned from the loader or none
// of them can be added to the TrustStore for the provided context.
bool LoadBuiltinSSLRootCertificates(SSL_CTX* ssl_ctx);
#endif // WEBRTC_EXCLUDE_BUILT_IN_SSL_ROOT_CERTS
#ifdef OPENSSL_IS_BORINGSSL
CRYPTO_BUFFER_POOL* GetBufferPool();
#endif
} // namespace openssl
} // namespace rtc
#endif // RTC_BASE_OPENSSL_UTILITY_H_
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