void SubresourceLoader::willSendRequestInternal(ResourceRequest& newRequest, const ResourceResponse& redirectResponse)
{
// Store the previous URL because the call to ResourceLoader::willSendRequest will modify it.
URL previousURL = request().url();
Ref<SubresourceLoader> protectedThis(*this);
if (!newRequest.url().isValid()) {
cancel(cannotShowURLError());
return;
}
ASSERT(!newRequest.isNull());
if (!redirectResponse.isNull()) {
if (options().redirect != FetchOptions::Redirect::Follow) {
if (options().redirect == FetchOptions::Redirect::Error) {
cancel();
return;
}
ResourceResponse opaqueRedirectedResponse;
opaqueRedirectedResponse.setType(ResourceResponse::Type::Opaqueredirect);
m_resource->responseReceived(opaqueRedirectedResponse);
didFinishLoading(currentTime());
return;
}
// CachedResources are keyed off their original request URL.
// Requesting the same original URL a second time can redirect to a unique second resource.
// Therefore, if a redirect to a different destination URL occurs, we should no longer consider this a revalidation of the first resource.
// Doing so would have us reusing the resource from the first request if the second request's revalidation succeeds.
if (newRequest.isConditional() && m_resource->resourceToRevalidate() && newRequest.url() != m_resource->resourceToRevalidate()->response().url()) {
newRequest.makeUnconditional();
MemoryCache::singleton().revalidationFailed(*m_resource);
if (m_frame && m_frame->page())
m_frame->page()->diagnosticLoggingClient().logDiagnosticMessageWithResult(DiagnosticLoggingKeys::cachedResourceRevalidationKey(), emptyString(), DiagnosticLoggingResultFail, ShouldSample::Yes);
}
if (!m_documentLoader->cachedResourceLoader().canRequest(m_resource->type(), newRequest.url(), options(), false /* forPreload */, true /* didReceiveRedirectResponse */)) {
cancel();
return;
}
if (!checkRedirectionCrossOriginAccessControl(request(), redirectResponse, newRequest)) {
cancel();
return;
}
if (m_resource->isImage() && m_documentLoader->cachedResourceLoader().shouldDeferImageLoad(newRequest.url())) {
cancel();
return;
}
m_resource->redirectReceived(newRequest, redirectResponse);
}
if (newRequest.isNull() || reachedTerminalState())
return;
ResourceLoader::willSendRequestInternal(newRequest, redirectResponse);
if (newRequest.isNull())
cancel();
ResourceLoadObserver::sharedObserver().logSubresourceLoading(m_frame.get(), newRequest, redirectResponse);
}
void SubresourceLoader::willSendRequestInternal(ResourceRequest& newRequest, const ResourceResponse& redirectResponse)
{
// Store the previous URL because the call to ResourceLoader::willSendRequest will modify it.
URL previousURL = request().url();
Ref<SubresourceLoader> protectedThis(*this);
if (!newRequest.url().isValid()) {
cancel(cannotShowURLError());
return;
}
if (newRequest.requester() != ResourceRequestBase::Requester::Main)
ResourceLoadObserver::sharedObserver().logSubresourceLoading(m_frame.get(), newRequest, redirectResponse);
ASSERT(!newRequest.isNull());
if (!redirectResponse.isNull()) {
if (options().redirect != FetchOptions::Redirect::Follow) {
if (options().redirect == FetchOptions::Redirect::Error) {
cancel();
return;
}
ResourceResponse opaqueRedirectedResponse;
opaqueRedirectedResponse.setURL(redirectResponse.url());
opaqueRedirectedResponse.setType(ResourceResponse::Type::Opaqueredirect);
m_resource->responseReceived(opaqueRedirectedResponse);
didFinishLoading(currentTime());
return;
} else if (m_redirectCount++ >= options().maxRedirectCount) {
cancel(ResourceError(String(), 0, request().url(), ASCIILiteral("Too many redirections"), ResourceError::Type::General));
return;
}
// CachedResources are keyed off their original request URL.
// Requesting the same original URL a second time can redirect to a unique second resource.
// Therefore, if a redirect to a different destination URL occurs, we should no longer consider this a revalidation of the first resource.
// Doing so would have us reusing the resource from the first request if the second request's revalidation succeeds.
if (newRequest.isConditional() && m_resource->resourceToRevalidate() && newRequest.url() != m_resource->resourceToRevalidate()->response().url()) {
newRequest.makeUnconditional();
MemoryCache::singleton().revalidationFailed(*m_resource);
if (m_frame && m_frame->page())
m_frame->page()->diagnosticLoggingClient().logDiagnosticMessageWithResult(DiagnosticLoggingKeys::cachedResourceRevalidationKey(), emptyString(), DiagnosticLoggingResultFail, ShouldSample::Yes);
}
if (!m_documentLoader->cachedResourceLoader().updateRequestAfterRedirection(m_resource->type(), newRequest, options())) {
cancel();
return;
}
String errorDescription;
if (!checkRedirectionCrossOriginAccessControl(request(), redirectResponse, newRequest, errorDescription)) {
String errorMessage = "Cross-origin redirection to " + newRequest.url().string() + " denied by Cross-Origin Resource Sharing policy: " + errorDescription;
if (m_frame && m_frame->document())
m_frame->document()->addConsoleMessage(MessageSource::Security, MessageLevel::Error, errorMessage);
cancel(ResourceError(String(), 0, request().url(), errorMessage, ResourceError::Type::AccessControl));
return;
}
if (m_resource->isImage() && m_documentLoader->cachedResourceLoader().shouldDeferImageLoad(newRequest.url())) {
cancel();
return;
}
m_loadTiming.addRedirect(redirectResponse.url(), newRequest.url());
m_resource->redirectReceived(newRequest, redirectResponse);
}
if (newRequest.isNull() || reachedTerminalState())
return;
ResourceLoader::willSendRequestInternal(newRequest, redirectResponse);
if (newRequest.isNull()) {
cancel();
return;
}
if (m_resource->type() == CachedResource::MainResource && !redirectResponse.isNull())
m_documentLoader->willContinueMainResourceLoadAfterRedirect(newRequest);
}
