chromium/third_party/blink/renderer/platform/wtf/text/base64.cc

/*
   Copyright (C) 2000-2001 Dawit Alemayehu <[email protected]>
   Copyright (C) 2006 Alexey Proskuryakov <[email protected]>
   Copyright (C) 2007, 2008 Apple Inc. All rights reserved.
   Copyright (C) 2010 Patrick Gansterer <[email protected]>

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU Lesser General Public License (LGPL)
   version 2 as published by the Free Software Foundation.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU Library General Public
   License along with this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
   USA.

   This code is based on the java implementation in HTTPClient
   package by Ronald Tschalaer Copyright (C) 1996-1999.
*/

#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/351564777): Remove this and convert code to safer constructs.
#pragma allow_unsafe_buffers
#endif

#include "third_party/blink/renderer/platform/wtf/text/base64.h"

#include <limits.h>

#include "third_party/blink/renderer/platform/wtf/text/string_buffer.h"
#include "third_party/blink/renderer/platform/wtf/text/string_utf8_adaptor.h"
#include "third_party/modp_b64/modp_b64.h"

namespace WTF {

namespace {

// https://infra.spec.whatwg.org/#ascii-whitespace
// Matches the definition of IsHTMLSpace in html_parser_idioms.h.
template <typename CharType>
bool IsAsciiWhitespace(CharType character) { … }

ModpDecodePolicy GetModpPolicy(Base64DecodePolicy policy) { … }

// Invokes modp_b64 without stripping whitespace.
bool Base64DecodeRaw(const StringView& in,
                     Vector<char>& out,
                     Base64DecodePolicy policy) { … }

}  // namespace

String Base64Encode(base::span<const uint8_t> data) { … }

void Base64Encode(base::span<const uint8_t> data, Vector<char>& out) { … }

bool Base64Decode(const StringView& in,
                  Vector<char>& out,
                  Base64DecodePolicy policy) { … }

bool Base64UnpaddedURLDecode(const String& in, Vector<char>& out) { … }

String Base64URLEncode(const char* data, unsigned length) { … }

String NormalizeToBase64(const String& encoding) { … }

}  // namespace WTF