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