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/*
* Copyright (C) 2017 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 "DOMCacheEngine.h"
#include "CacheQueryOptions.h"
#include "CrossOriginAccessControl.h"
#include "Exception.h"
#include "HTTPParsers.h"
#include "ScriptExecutionContext.h"
#include <wtf/text/MakeString.h>
namespace WebCore {
namespace DOMCacheEngine {
Exception convertToException(Error error)
{
switch (error) {
case Error::NotImplemented:
return Exception { ExceptionCode::NotSupportedError, "Not implemented"_s };
case Error::ReadDisk:
return Exception { ExceptionCode::TypeError, "Failed reading data from the file system"_s };
case Error::WriteDisk:
return Exception { ExceptionCode::TypeError, "Failed writing data to the file system"_s };
case Error::QuotaExceeded:
return Exception { ExceptionCode::QuotaExceededError, "Quota exceeded"_s };
case Error::Internal:
return Exception { ExceptionCode::TypeError, "Internal error"_s };
case Error::Stopped:
return Exception { ExceptionCode::TypeError, "Context is stopped"_s };
case Error::CORP:
return Exception { ExceptionCode::TypeError, "Cross-Origin-Resource-Policy failure"_s };
}
ASSERT_NOT_REACHED();
return Exception { ExceptionCode::TypeError, "Connection stopped"_s };
}
Exception convertToExceptionAndLog(ScriptExecutionContext* context, Error error)
{
auto exception = convertToException(error);
if (context)
context->addConsoleMessage(MessageSource::JS, MessageLevel::Error, makeString("Cache API operation failed: "_s, exception.message()));
return exception;
}
static inline bool matchURLs(const ResourceRequest& request, const URL& cachedURL, const CacheQueryOptions& options)
{
ASSERT(options.ignoreMethod || request.httpMethod() == "GET"_s);
URL requestURL = request.url();
URL cachedRequestURL = cachedURL;
if (options.ignoreSearch) {
requestURL.setQuery({ });
cachedRequestURL.setQuery({ });
}
return equalIgnoringFragmentIdentifier(requestURL, cachedRequestURL);
}
bool queryCacheMatch(const ResourceRequest& request, const ResourceRequest& cachedRequest, const ResourceResponse& cachedResponse, const CacheQueryOptions& options)
{
if (!matchURLs(request, cachedRequest.url(), options))
return false;
if (options.ignoreVary)
return true;
String varyValue = cachedResponse.httpHeaderField(WebCore::HTTPHeaderName::Vary);
if (varyValue.isNull())
return true;
bool isVarying = false;
varyValue.split(',', [&](StringView view) {
if (isVarying)
return;
auto nameView = view.trim(isASCIIWhitespaceWithoutFF<UChar>);
if (nameView == "*"_s) {
isVarying = true;
return;
}
isVarying = cachedRequest.httpHeaderField(nameView) != request.httpHeaderField(nameView);
});
return !isVarying;
}
bool queryCacheMatch(const ResourceRequest& request, const URL& url, bool hasVaryStar, const HashMap<String, String>& varyHeaders, const CacheQueryOptions& options)
{
if (!matchURLs(request, url, options))
return false;
if (options.ignoreVary)
return true;
if (hasVaryStar)
return false;
for (const auto& pair : varyHeaders) {
if (pair.value != request.httpHeaderField(pair.key))
return false;
}
return true;
}
ResponseBody isolatedResponseBody(const ResponseBody& body)
{
return WTF::switchOn(body, [](const Ref<FormData>& formData) -> ResponseBody {
return formData->isolatedCopy();
}, [](const Ref<SharedBuffer>& buffer) -> ResponseBody {
return buffer.copyRef(); // SharedBuffer are immutable and can be returned as-is.
}, [](const std::nullptr_t&) -> ResponseBody {
return DOMCacheEngine::ResponseBody { };
});
}
ResponseBody copyResponseBody(const ResponseBody& body)
{
return WTF::switchOn(body, [](const Ref<FormData>& formData) -> ResponseBody {
return formData.copyRef();
}, [](const Ref<SharedBuffer>& buffer) -> ResponseBody {
return buffer.copyRef();
}, [](const std::nullptr_t&) -> ResponseBody {
return DOMCacheEngine::ResponseBody { };
});
}
Record Record::copy() const
{
return Record { identifier, updateResponseCounter, requestHeadersGuard, request, options, referrer, responseHeadersGuard, response, copyResponseBody(responseBody), responseBodySize };
}
CrossThreadRecord toCrossThreadRecord(Record&& record)
{
return CrossThreadRecord {
record.identifier,
record.updateResponseCounter,
record.requestHeadersGuard,
WTFMove(record.request).isolatedCopy(),
WTFMove(record.options).isolatedCopy(),
WTFMove(record.referrer).isolatedCopy(),
record.responseHeadersGuard,
record.response.crossThreadData(),
isolatedResponseBody(record.responseBody),
record.responseBodySize
};
}
Record fromCrossThreadRecord(CrossThreadRecord&& record)
{
return Record {
record.identifier,
record.updateResponseCounter,
record.requestHeadersGuard,
WTFMove(record.request),
WTFMove(record.options),
WTFMove(record.referrer),
record.responseHeadersGuard,
ResourceResponse::fromCrossThreadData(WTFMove(record.response)),
WTFMove(record.responseBody),
record.responseBodySize
};
}
CrossThreadRecord CrossThreadRecord::isolatedCopy() &&
{
return CrossThreadRecord {
identifier,
updateResponseCounter,
requestHeadersGuard,
WTFMove(request).isolatedCopy(),
WTFMove(options).isolatedCopy(),
WTFMove(referrer).isolatedCopy(),
responseHeadersGuard,
WTFMove(response).isolatedCopy(),
isolatedResponseBody(responseBody),
responseBodySize
};
}
} // namespace DOMCacheEngine
} // namespace WebCore
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