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/*
* Copyright (C) 2023 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. AND ITS CONTRIBUTORS ``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 ITS 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.
*/
#include "config.h"
#include "StorageUtilities.h"
#include "ClientOrigin.h"
#include "WebCorePersistentCoders.h"
#include <pal/crypto/CryptoDigest.h>
#include <wtf/FileSystem.h>
#include <wtf/Scope.h>
#include <wtf/persistence/PersistentCoders.h>
#include <wtf/text/Base64.h>
#if ASSERT_ENABLED
#include <wtf/RunLoop.h>
#endif
namespace WebCore {
namespace StorageUtilities {
std::optional<ClientOrigin> readOriginFromFile(const String& filePath)
{
ASSERT(!RunLoop::isMain());
if (filePath.isEmpty() || !FileSystem::fileExists(filePath))
return std::nullopt;
auto originFileHandle = FileSystem::openFile(filePath, FileSystem::FileOpenMode::Read);
auto closeFile = makeScopeExit([&] {
FileSystem::closeFile(originFileHandle);
});
if (!FileSystem::isHandleValid(originFileHandle))
return std::nullopt;
auto originContent = FileSystem::readEntireFile(originFileHandle);
if (!originContent)
return std::nullopt;
WTF::Persistence::Decoder decoder(originContent->span());
std::optional<ClientOrigin> origin;
decoder >> origin;
return origin;
}
bool writeOriginToFile(const String& filePath, const ClientOrigin& origin)
{
if (filePath.isEmpty() || FileSystem::fileExists(filePath))
return false;
FileSystem::makeAllDirectories(FileSystem::parentPath(filePath));
auto originFileHandle = FileSystem::openFile(filePath, FileSystem::FileOpenMode::ReadWrite);
auto closeFile = makeScopeExit([&] {
FileSystem::closeFile(originFileHandle);
});
if (!FileSystem::isHandleValid(originFileHandle)) {
LOG_ERROR("writeOriginToFile: Failed to open origin file '%s'", filePath.utf8().data());
return false;
}
WTF::Persistence::Encoder encoder;
encoder << origin;
FileSystem::writeToFile(originFileHandle, encoder.span());
return true;
}
String encodeSecurityOriginForFileName(FileSystem::Salt salt, const SecurityOriginData& origin)
{
auto crypto = PAL::CryptoDigest::create(PAL::CryptoDigest::Algorithm::SHA_256);
auto originString = origin.toString().utf8();
crypto->addBytes(byteCast<uint8_t>(originString.span()));
crypto->addBytes(salt);
return base64URLEncodeToString(crypto->computeHash());
}
} // namespace StorageUtilities
} // namespace WebCore
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