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/*
* Copyright (C) 2006 Alexey Proskuryakov <ap@webkit.org>
* Copyright (C) 2010 Patrick Gansterer <paroga@paroga.com>
* Copyright (C) 2013, 2016 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef Base64_h
#define Base64_h
#include <wtf/Vector.h>
#include <wtf/text/CString.h>
#include <wtf/text/WTFString.h>
namespace WTF {
enum Base64EncodePolicy {
Base64DoNotInsertLFs,
Base64InsertLFs,
Base64URLPolicy // No padding, no LFs.
};
enum Base64DecodeOptions {
Base64Default = 0,
Base64ValidatePadding = 1 << 0,
Base64IgnoreSpacesAndNewLines = 1 << 1,
};
class SignedOrUnsignedCharVectorAdapter {
public:
SignedOrUnsignedCharVectorAdapter(Vector<char>& vector) { m_vector.c = &vector; }
SignedOrUnsignedCharVectorAdapter(Vector<uint8_t>& vector) { m_vector.u = &vector; }
operator Vector<char>&() { return *m_vector.c; }
void clear() { m_vector.c->clear(); }
private:
union {
Vector<char>* c;
Vector<uint8_t>* u;
} m_vector;
};
class ConstSignedOrUnsignedCharVectorAdapter {
public:
ConstSignedOrUnsignedCharVectorAdapter(const Vector<char>& vector) { m_vector.c = &vector; }
ConstSignedOrUnsignedCharVectorAdapter(const Vector<uint8_t>& vector) { m_vector.u = &vector; }
operator const Vector<char>&() { return *m_vector.c; }
const char* data() const { return m_vector.c->data(); }
size_t size() const { return m_vector.c->size(); }
private:
union {
const Vector<char>* c;
const Vector<uint8_t>* u;
} m_vector;
};
WTF_EXPORT_PRIVATE void base64Encode(const void*, unsigned, Vector<char>&, Base64EncodePolicy = Base64DoNotInsertLFs);
void base64Encode(ConstSignedOrUnsignedCharVectorAdapter, Vector<char>&, Base64EncodePolicy = Base64DoNotInsertLFs);
void base64Encode(const CString&, Vector<char>&, Base64EncodePolicy = Base64DoNotInsertLFs);
WTF_EXPORT_PRIVATE String base64Encode(const void*, unsigned, Base64EncodePolicy = Base64DoNotInsertLFs);
String base64Encode(ConstSignedOrUnsignedCharVectorAdapter, Base64EncodePolicy = Base64DoNotInsertLFs);
String base64Encode(const CString&, Base64EncodePolicy = Base64DoNotInsertLFs);
WTF_EXPORT_PRIVATE bool base64Decode(const String&, SignedOrUnsignedCharVectorAdapter, unsigned options = Base64Default);
WTF_EXPORT_PRIVATE bool base64Decode(const Vector<char>&, SignedOrUnsignedCharVectorAdapter, unsigned options = Base64Default);
WTF_EXPORT_PRIVATE bool base64Decode(const char*, unsigned, SignedOrUnsignedCharVectorAdapter, unsigned options = Base64Default);
inline void base64Encode(ConstSignedOrUnsignedCharVectorAdapter in, Vector<char>& out, Base64EncodePolicy policy)
{
base64Encode(in.data(), in.size(), out, policy);
}
inline void base64Encode(const CString& in, Vector<char>& out, Base64EncodePolicy policy)
{
base64Encode(in.data(), in.length(), out, policy);
}
inline String base64Encode(ConstSignedOrUnsignedCharVectorAdapter in, Base64EncodePolicy policy)
{
return base64Encode(in.data(), in.size(), policy);
}
inline String base64Encode(const CString& in, Base64EncodePolicy policy)
{
return base64Encode(in.data(), in.length(), policy);
}
// ======================================================================================
// All the same functions modified for base64url, as defined in RFC 4648.
// This format uses '-' and '_' instead of '+' and '/' respectively.
// ======================================================================================
WTF_EXPORT_PRIVATE void base64URLEncode(const void*, unsigned, Vector<char>&);
void base64URLEncode(ConstSignedOrUnsignedCharVectorAdapter, Vector<char>&);
void base64URLEncode(const CString&, Vector<char>&);
WTF_EXPORT_PRIVATE String base64URLEncode(const void*, unsigned);
String base64URLEncode(ConstSignedOrUnsignedCharVectorAdapter);
String base64URLEncode(const CString&);
WTF_EXPORT_PRIVATE bool base64URLDecode(const String&, SignedOrUnsignedCharVectorAdapter);
WTF_EXPORT_PRIVATE bool base64URLDecode(const Vector<char>&, SignedOrUnsignedCharVectorAdapter);
WTF_EXPORT_PRIVATE bool base64URLDecode(const char*, unsigned, SignedOrUnsignedCharVectorAdapter);
inline void base64URLEncode(ConstSignedOrUnsignedCharVectorAdapter in, Vector<char>& out)
{
base64URLEncode(in.data(), in.size(), out);
}
inline void base64URLEncode(const CString& in, Vector<char>& out)
{
base64URLEncode(in.data(), in.length(), out);
}
inline String base64URLEncode(ConstSignedOrUnsignedCharVectorAdapter in)
{
return base64URLEncode(in.data(), in.size());
}
inline String base64URLEncode(const CString& in)
{
return base64URLEncode(in.data(), in.length());
}
} // namespace WTF
using WTF::Base64EncodePolicy;
using WTF::Base64DoNotInsertLFs;
using WTF::Base64InsertLFs;
using WTF::Base64ValidatePadding;
using WTF::Base64IgnoreSpacesAndNewLines;
using WTF::base64Encode;
using WTF::base64Decode;
using WTF::base64URLDecode;
#endif // Base64_h
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