DOMCacheEngine.cpp [plain text]
#include "config.h"
#include "DOMCacheEngine.h"
#include "CacheQueryOptions.h"
#include "Exception.h"
#include "HTTPParsers.h"
namespace WebCore {
namespace DOMCacheEngine {
static inline Exception errorToException(Error error)
{
switch (error) {
case Error::NotImplemented:
return Exception { NotSupportedError, ASCIILiteral("Not implemented") };
case Error::ReadDisk:
return Exception { TypeError, ASCIILiteral("Failed reading data from the file system") };
case Error::WriteDisk:
return Exception { TypeError, ASCIILiteral("Failed writing data to the file system") };
case Error::QuotaExceeded:
return Exception { QuotaExceededError, ASCIILiteral("Quota exceeded") };
default:
return Exception { TypeError, ASCIILiteral("Internal error") };
}
}
Exception convertToExceptionAndLog(ScriptExecutionContext* context, Error error)
{
auto exception = errorToException(error);
if (context)
context->addConsoleMessage(MessageSource::JS, MessageLevel::Error, makeString("Cache API operation failed: ", exception.message()));
return exception;
}
static inline bool matchURLs(const ResourceRequest& request, const URL& cachedURL, const CacheQueryOptions& options)
{
ASSERT(options.ignoreMethod || request.httpMethod() == "GET");
URL requestURL = request.url();
URL cachedRequestURL = cachedURL;
if (options.ignoreSearch) {
if (requestURL.hasQuery())
requestURL.setQuery({ });
if (cachedRequestURL.hasQuery())
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(',', false, [&](StringView view) {
if (isVarying)
return;
auto nameView = stripLeadingAndTrailingHTTPSpaces(view);
if (nameView == "*") {
isVarying = true;
return;
}
auto name = nameView.toString();
isVarying = cachedRequest.httpHeaderField(name) != request.httpHeaderField(name);
});
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) {
return formData->isolatedCopy();
}, [](const Ref<SharedBuffer>& buffer) {
return buffer->copy();
}, [](const std::nullptr_t&) {
return DOMCacheEngine::ResponseBody { };
});
}
ResponseBody copyResponseBody(const ResponseBody& body)
{
return WTF::switchOn(body, [](const Ref<FormData>& formData) {
return formData.copyRef();
}, [](const Ref<SharedBuffer>& buffer) {
return buffer.copyRef();
}, [](const std::nullptr_t&) {
return DOMCacheEngine::ResponseBody { };
});
}
Record Record::copy() const
{
return Record { identifier, updateResponseCounter, requestHeadersGuard, request, options, referrer, responseHeadersGuard, response, copyResponseBody(responseBody), responseBodySize };
}
static inline CacheInfo isolateCacheInfo(const CacheInfo& info)
{
return CacheInfo { info.identifier, info.name.isolatedCopy() };
}
CacheInfos CacheInfos::isolatedCopy()
{
return { WTF::map(infos, isolateCacheInfo), updateCounter };
}
}
}