FetchResponseData* FetchResponseData::createCORSFilteredResponse(
const HTTPHeaderSet& exposedHeaders) const {
DCHECK_EQ(m_type, DefaultType);
// "A CORS filtered response is a filtered response whose type is |CORS|,
// header list excludes all headers in internal response's header list,
// except those whose name is either one of `Cache-Control`,
// `Content-Language`, `Content-Type`, `Expires`, `Last-Modified`, and
// `Pragma`, and except those whose name is one of the values resulting from
// parsing `Access-Control-Expose-Headers` in internal response's header
// list."
FetchResponseData* response =
new FetchResponseData(CORSType, m_status, m_statusMessage);
response->setURLList(m_urlList);
for (size_t i = 0; i < m_headerList->size(); ++i) {
const FetchHeaderList::Header* header = m_headerList->list()[i].get();
const String& name = header->first;
const bool explicitlyExposed = exposedHeaders.contains(name);
if (isOnAccessControlResponseHeaderWhitelist(name) ||
(explicitlyExposed &&
!FetchUtils::isForbiddenResponseHeaderName(name))) {
if (explicitlyExposed)
response->m_corsExposedHeaderNames.add(name);
response->m_headerList->append(name, header->second);
}
}
response->m_buffer = m_buffer;
response->m_mimeType = m_mimeType;
response->m_internalResponse = const_cast<FetchResponseData*>(this);
return response;
}
FetchResponseData* FetchResponseData::clone(ScriptState* scriptState) {
FetchResponseData* newResponse = create();
newResponse->m_type = m_type;
if (m_terminationReason) {
newResponse->m_terminationReason = WTF::wrapUnique(new TerminationReason);
*newResponse->m_terminationReason = *m_terminationReason;
}
newResponse->setURLList(m_urlList);
newResponse->m_status = m_status;
newResponse->m_statusMessage = m_statusMessage;
newResponse->m_headerList = m_headerList->clone();
newResponse->m_mimeType = m_mimeType;
newResponse->m_responseTime = m_responseTime;
newResponse->m_cacheStorageCacheName = m_cacheStorageCacheName;
newResponse->m_corsExposedHeaderNames = m_corsExposedHeaderNames;
switch (m_type) {
case BasicType:
case CORSType:
ASSERT(m_internalResponse);
ASSERT(m_buffer == m_internalResponse->m_buffer);
ASSERT(m_internalResponse->m_type == DefaultType);
newResponse->m_internalResponse = m_internalResponse->clone(scriptState);
m_buffer = m_internalResponse->m_buffer;
newResponse->m_buffer = newResponse->m_internalResponse->m_buffer;
break;
case DefaultType: {
ASSERT(!m_internalResponse);
if (m_buffer) {
BodyStreamBuffer* new1 = nullptr;
BodyStreamBuffer* new2 = nullptr;
m_buffer->tee(&new1, &new2);
m_buffer = new1;
newResponse->m_buffer = new2;
}
break;
}
case ErrorType:
ASSERT(!m_internalResponse);
ASSERT(!m_buffer);
break;
case OpaqueType:
case OpaqueRedirectType:
ASSERT(m_internalResponse);
ASSERT(!m_buffer);
ASSERT(m_internalResponse->m_type == DefaultType);
newResponse->m_internalResponse = m_internalResponse->clone(scriptState);
break;
}
return newResponse;
}
FetchResponseData* FetchResponseData::createOpaqueRedirectFilteredResponse()
const {
DCHECK_EQ(m_type, DefaultType);
// "An opaque filtered response is a filtered response whose type is
// 'opaqueredirect', status is 0, status message is the empty byte sequence,
// header list is the empty list, body is null, and cache state is 'none'."
//
// https://fetch.spec.whatwg.org/#concept-filtered-response-opaque-redirect
FetchResponseData* response =
new FetchResponseData(OpaqueRedirectType, 0, "");
response->setURLList(m_urlList);
response->m_internalResponse = const_cast<FetchResponseData*>(this);
return response;
}
FetchResponseData* FetchResponseData::createBasicFilteredResponse() const {
DCHECK_EQ(m_type, DefaultType);
// "A basic filtered response is a filtered response whose type is |basic|,
// header list excludes any headers in internal response's header list whose
// name is `Set-Cookie` or `Set-Cookie2`."
FetchResponseData* response =
new FetchResponseData(BasicType, m_status, m_statusMessage);
response->setURLList(m_urlList);
for (size_t i = 0; i < m_headerList->size(); ++i) {
const FetchHeaderList::Header* header = m_headerList->list()[i].get();
if (FetchUtils::isForbiddenResponseHeaderName(header->first))
continue;
response->m_headerList->append(header->first, header->second);
}
response->m_buffer = m_buffer;
response->m_mimeType = m_mimeType;
response->m_internalResponse = const_cast<FetchResponseData*>(this);
return response;
}