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- // 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 base::Location& location) {
- if (DCHECK_IS_ON() && VLOG_IS_ON(1)) {
- uint32_t error_num = ERR_peek_error();
- if (error_num == 0)
- return;
- DVLOG(1) << "OpenSSL ERR_get_error stack from " << location.ToString();
- ERR_print_errors_cb(&OpenSSLErrorCallback, NULL);
- } else {
- ERR_clear_error();
- }
- }
- } // namespace crypto
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