| // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "crypto/openssl_util.h" |
| |
| #include <stddef.h> |
| #include <stdint.h> |
| |
| #include <string> |
| |
| #include "base/logging.h" |
| #include "base/strings/string_piece.h" |
| #include "third_party/boringssl/src/include/openssl/crypto.h" |
| #include "third_party/boringssl/src/include/openssl/err.h" |
| |
| namespace crypto { |
| |
| namespace { |
| |
| // Callback routine for OpenSSL to print error messages. |str| is a |
| // NULL-terminated string of length |len| containing diagnostic information |
| // such as the library, function and reason for the error, the file and line |
| // where the error originated, plus potentially any context-specific |
| // information about the error. |context| contains a pointer to user-supplied |
| // data, which is currently unused. |
| // If this callback returns a value <= 0, OpenSSL will stop processing the |
| // error queue and return, otherwise it will continue calling this function |
| // until all errors have been removed from the queue. |
| int OpenSSLErrorCallback(const char* str, size_t len, void* context) { |
| DVLOG(1) << "\t" << base::StringPiece(str, len); |
| return 1; |
| } |
| |
| } // namespace |
| |
| void EnsureOpenSSLInit() { |
| // CRYPTO_library_init may be safely called concurrently. |
| CRYPTO_library_init(); |
| } |
| |
| void ClearOpenSSLERRStack(const tracked_objects::Location& location) { |
| if (DCHECK_IS_ON() && VLOG_IS_ON(1)) { |
| uint32_t error_num = ERR_peek_error(); |
| if (error_num == 0) |
| return; |
| |
| std::string message; |
| location.Write(true, true, &message); |
| DVLOG(1) << "OpenSSL ERR_get_error stack from " << message; |
| ERR_print_errors_cb(&OpenSSLErrorCallback, NULL); |
| } else { |
| ERR_clear_error(); |
| } |
| } |
| |
| } // namespace crypto |