void ApplicationCacheGroup::manifestNotFound()
{
makeObsolete();
postListenerTask(ApplicationCacheHost::OBSOLETE_EVENT, m_associatedDocumentLoaders);
postListenerTask(ApplicationCacheHost::ERROR_EVENT, m_pendingMasterResourceLoaders);
stopLoading();
ASSERT(m_pendingEntries.isEmpty());
m_manifestResource = 0;
while (!m_pendingMasterResourceLoaders.isEmpty()) {
HashSet<DocumentLoader*>::iterator it = m_pendingMasterResourceLoaders.begin();
ASSERT((*it)->applicationCacheHost()->candidateApplicationCacheGroup() == this);
ASSERT(!(*it)->applicationCacheHost()->applicationCache());
(*it)->applicationCacheHost()->setCandidateApplicationCacheGroup(0);
m_pendingMasterResourceLoaders.remove(it);
}
m_downloadingPendingMasterResourceLoadersCount = 0;
setUpdateStatus(Idle);
m_frame = 0;
if (m_caches.isEmpty()) {
ASSERT(m_associatedDocumentLoaders.isEmpty());
ASSERT(!m_cacheBeingUpdated);
delete this;
}
}
void ApplicationCacheGroup::failedLoadingMainResource(DocumentLoader* loader)
{
ASSERT(m_pendingMasterResourceLoaders.contains(loader));
ASSERT(m_completionType == None || m_pendingEntries.isEmpty());
switch (m_completionType) {
case None:
// The main resource finished loading before the manifest was ready. It will be handled via dispatchMainResources() later.
return;
case NoUpdate:
ASSERT(!m_cacheBeingUpdated);
// The manifest didn't change, and we have a relevant cache - but the main resource download failed mid-way, so it cannot be stored to the cache,
// and the loader does not get associated to it. If there are other main resources being downloaded for this cache group, they may still succeed.
postListenerTask(ApplicationCacheHost::ERROR_EVENT, loader);
break;
case Failure:
// Cache update failed, too.
ASSERT(!m_cacheBeingUpdated); // Already cleared out by stopLoading().
ASSERT(!loader->applicationCacheHost()->applicationCache() || loader->applicationCacheHost()->applicationCache() == m_cacheBeingUpdated);
loader->applicationCacheHost()->setApplicationCache(0); // Will unset candidate, too.
m_associatedDocumentLoaders.remove(loader);
postListenerTask(ApplicationCacheHost::ERROR_EVENT, loader);
break;
case Completed:
// The cache manifest didn't list this main resource, and all cache entries were already updated successfully - but the main resource failed to load,
// so it cannot be stored to the cache. If there are other main resources being downloaded for this cache group, they may still succeed.
ASSERT(m_associatedDocumentLoaders.contains(loader));
ASSERT(loader->applicationCacheHost()->applicationCache() == m_cacheBeingUpdated);
ASSERT(!loader->applicationCacheHost()->candidateApplicationCacheGroup());
m_associatedDocumentLoaders.remove(loader);
loader->applicationCacheHost()->setApplicationCache(0);
postListenerTask(ApplicationCacheHost::ERROR_EVENT, loader);
break;
}
ASSERT(m_downloadingPendingMasterResourceLoadersCount > 0);
m_downloadingPendingMasterResourceLoadersCount--;
checkIfLoadIsComplete();
}
void ApplicationCacheGroup::finishedLoadingMainResource(DocumentLoader* loader)
{
ASSERT(m_pendingMasterResourceLoaders.contains(loader));
ASSERT(m_completionType == None || m_pendingEntries.isEmpty());
URL url = loader->url();
if (url.hasFragmentIdentifier())
url.removeFragmentIdentifier();
switch (m_completionType) {
case None:
// The main resource finished loading before the manifest was ready. It will be handled via dispatchMainResources() later.
return;
case NoUpdate:
ASSERT(!m_cacheBeingUpdated);
associateDocumentLoaderWithCache(loader, m_newestCache.get());
if (ApplicationCacheResource* resource = m_newestCache->resourceForURL(url)) {
if (!(resource->type() & ApplicationCacheResource::Master)) {
resource->addType(ApplicationCacheResource::Master);
ASSERT(!resource->storageID());
}
} else {
RefPtr<ResourceBuffer> buffer = loader->mainResourceData();
m_newestCache->addResource(ApplicationCacheResource::create(url, loader->response(), ApplicationCacheResource::Master, buffer ? buffer->sharedBuffer() : 0));
}
break;
case Failure:
// Cache update has been a failure, so there is no reason to keep the document associated with the incomplete cache
// (its main resource was not cached yet, so it is likely that the application changed significantly server-side).
ASSERT(!m_cacheBeingUpdated); // Already cleared out by stopLoading().
loader->applicationCacheHost()->setApplicationCache(0); // Will unset candidate, too.
m_associatedDocumentLoaders.remove(loader);
postListenerTask(ApplicationCacheHost::ERROR_EVENT, loader);
break;
case Completed:
ASSERT(m_associatedDocumentLoaders.contains(loader));
if (ApplicationCacheResource* resource = m_cacheBeingUpdated->resourceForURL(url)) {
if (!(resource->type() & ApplicationCacheResource::Master)) {
resource->addType(ApplicationCacheResource::Master);
ASSERT(!resource->storageID());
}
} else {
RefPtr<ResourceBuffer> buffer = loader->mainResourceData();
m_cacheBeingUpdated->addResource(ApplicationCacheResource::create(url, loader->response(), ApplicationCacheResource::Master, buffer ? buffer->sharedBuffer() : 0));
}
// The "cached" event will be posted to all associated documents once update is complete.
break;
}
ASSERT(m_downloadingPendingMasterResourceLoadersCount > 0);
m_downloadingPendingMasterResourceLoadersCount--;
checkIfLoadIsComplete();
}
void ApplicationCacheGroup::selectCacheWithoutManifestURL(Frame* frame)
{
if (!frame->settings().offlineWebApplicationCacheEnabled())
return;
DocumentLoader* documentLoader = frame->loader().documentLoader();
ASSERT(!documentLoader->applicationCacheHost()->applicationCache());
// Don't access anything on disk if private browsing is enabled.
if (frame->page()->usesEphemeralSession() || !frame->document()->securityOrigin()->canAccessApplicationCache(frame->tree().top().document()->securityOrigin())) {
postListenerTask(ApplicationCacheHost::CHECKING_EVENT, documentLoader);
postListenerTask(ApplicationCacheHost::ERROR_EVENT, documentLoader);
return;
}
ApplicationCache* mainResourceCache = documentLoader->applicationCacheHost()->mainResourceApplicationCache();
if (mainResourceCache) {
mainResourceCache->group()->associateDocumentLoaderWithCache(documentLoader, mainResourceCache);
mainResourceCache->group()->update(frame, ApplicationCacheUpdateWithBrowsingContext);
}
}
void ApplicationCacheGroup::startLoadingEntry()
{
ASSERT(m_cacheBeingUpdated);
if (m_pendingEntries.isEmpty()) {
m_completionType = Completed;
deliverDelayedMainResources();
return;
}
EntryMap::const_iterator it = m_pendingEntries.begin();
postListenerTask(ApplicationCacheHost::PROGRESS_EVENT, m_progressTotal, m_progressDone, m_associatedDocumentLoaders);
m_progressDone++;
ASSERT(!m_currentHandle);
m_currentHandle = createResourceHandle(URL(ParsedURLString, it->key), m_newestCache ? m_newestCache->resourceForURL(it->key) : 0);
}
void ApplicationCacheGroup::update(Frame* frame, ApplicationCacheUpdateOption updateOption)
{
if (m_updateStatus == Checking || m_updateStatus == Downloading) {
if (updateOption == ApplicationCacheUpdateWithBrowsingContext) {
postListenerTask(ApplicationCacheHost::CHECKING_EVENT, frame->loader().documentLoader());
if (m_updateStatus == Downloading)
postListenerTask(ApplicationCacheHost::DOWNLOADING_EVENT, frame->loader().documentLoader());
}
return;
}
// Don't change anything on disk if private browsing is enabled.
if (frame->settings().privateBrowsingEnabled()) {
ASSERT(m_pendingMasterResourceLoaders.isEmpty());
ASSERT(m_pendingEntries.isEmpty());
ASSERT(!m_cacheBeingUpdated);
postListenerTask(ApplicationCacheHost::CHECKING_EVENT, frame->loader().documentLoader());
postListenerTask(ApplicationCacheHost::NOUPDATE_EVENT, frame->loader().documentLoader());
return;
}
ASSERT(!m_frame);
m_frame = frame;
setUpdateStatus(Checking);
postListenerTask(ApplicationCacheHost::CHECKING_EVENT, m_associatedDocumentLoaders);
if (!m_newestCache) {
ASSERT(updateOption == ApplicationCacheUpdateWithBrowsingContext);
postListenerTask(ApplicationCacheHost::CHECKING_EVENT, frame->loader().documentLoader());
}
ASSERT(!m_manifestHandle);
ASSERT(!m_manifestResource);
ASSERT(!m_currentHandle);
ASSERT(!m_currentResource);
ASSERT(m_completionType == None);
// FIXME: Handle defer loading
m_manifestHandle = createResourceHandle(m_manifestURL, m_newestCache ? m_newestCache->manifestResource() : 0);
}
void ApplicationCacheGroup::update(Frame* frame, ApplicationCacheUpdateOption updateOption)
{
if (m_updateStatus == Checking || m_updateStatus == Downloading) {
if (updateOption == ApplicationCacheUpdateWithBrowsingContext) {
postListenerTask(ApplicationCacheHost::CHECKING_EVENT, frame->loader().documentLoader());
if (m_updateStatus == Downloading)
postListenerTask(ApplicationCacheHost::DOWNLOADING_EVENT, frame->loader().documentLoader());
}
return;
}
// Don't access anything on disk if private browsing is enabled.
if (frame->page()->usesEphemeralSession() || !frame->document()->securityOrigin()->canAccessApplicationCache(frame->tree().top().document()->securityOrigin())) {
ASSERT(m_pendingMasterResourceLoaders.isEmpty());
ASSERT(m_pendingEntries.isEmpty());
ASSERT(!m_cacheBeingUpdated);
postListenerTask(ApplicationCacheHost::CHECKING_EVENT, frame->loader().documentLoader());
postListenerTask(ApplicationCacheHost::ERROR_EVENT, frame->loader().documentLoader());
return;
}
ASSERT(!m_frame);
m_frame = frame;
setUpdateStatus(Checking);
postListenerTask(ApplicationCacheHost::CHECKING_EVENT, m_associatedDocumentLoaders);
if (!m_newestCache) {
ASSERT(updateOption == ApplicationCacheUpdateWithBrowsingContext);
postListenerTask(ApplicationCacheHost::CHECKING_EVENT, frame->loader().documentLoader());
}
ASSERT(!m_manifestHandle);
ASSERT(!m_manifestResource);
ASSERT(!m_currentHandle);
ASSERT(!m_currentResource);
ASSERT(m_completionType == None);
// FIXME: Handle defer loading
m_manifestHandle = createResourceHandle(m_manifestURL, m_newestCache ? m_newestCache->manifestResource() : 0);
}
void ApplicationCacheGroup::checkIfLoadIsComplete()
{
if (m_manifestHandle || !m_pendingEntries.isEmpty() || m_downloadingPendingMasterResourceLoadersCount)
return;
// We're done, all resources have finished downloading (successfully or not).
bool isUpgradeAttempt = m_newestCache;
switch (m_completionType) {
case None:
ASSERT_NOT_REACHED();
return;
case NoUpdate:
ASSERT(isUpgradeAttempt);
ASSERT(!m_cacheBeingUpdated);
// The storage could have been manually emptied by the user.
if (!m_storageID)
cacheStorage().storeNewestCache(this);
postListenerTask(ApplicationCacheHost::NOUPDATE_EVENT, m_associatedDocumentLoaders);
break;
case Failure:
ASSERT(!m_cacheBeingUpdated);
postListenerTask(ApplicationCacheHost::ERROR_EVENT, m_associatedDocumentLoaders);
if (m_caches.isEmpty()) {
ASSERT(m_associatedDocumentLoaders.isEmpty());
delete this;
return;
}
break;
case Completed: {
// FIXME: Fetch the resource from manifest URL again, and check whether it is identical to the one used for update (in case the application was upgraded server-side in the meanwhile). (<rdar://problem/6467625>)
ASSERT(m_cacheBeingUpdated);
if (m_manifestResource)
m_cacheBeingUpdated->setManifestResource(m_manifestResource.release());
else {
// We can get here as a result of retrying the Complete step, following
// a failure of the cache storage to save the newest cache due to hitting
// the maximum size. In such a case, m_manifestResource may be 0, as
// the manifest was already set on the newest cache object.
ASSERT(cacheStorage().isMaximumSizeReached() && m_calledReachedMaxAppCacheSize);
}
RefPtr<ApplicationCache> oldNewestCache = (m_newestCache == m_cacheBeingUpdated) ? RefPtr<ApplicationCache>() : m_newestCache;
// If we exceeded the origin quota while downloading we can request a quota
// increase now, before we attempt to store the cache.
int64_t totalSpaceNeeded;
if (!cacheStorage().checkOriginQuota(this, oldNewestCache.get(), m_cacheBeingUpdated.get(), totalSpaceNeeded))
didReachOriginQuota(totalSpaceNeeded);
ApplicationCacheStorage::FailureReason failureReason;
setNewestCache(m_cacheBeingUpdated.release());
if (cacheStorage().storeNewestCache(this, oldNewestCache.get(), failureReason)) {
// New cache stored, now remove the old cache.
if (oldNewestCache)
cacheStorage().remove(oldNewestCache.get());
// Fire the final progress event.
ASSERT(m_progressDone == m_progressTotal);
postListenerTask(ApplicationCacheHost::PROGRESS_EVENT, m_progressTotal, m_progressDone, m_associatedDocumentLoaders);
// Fire the success event.
postListenerTask(isUpgradeAttempt ? ApplicationCacheHost::UPDATEREADY_EVENT : ApplicationCacheHost::CACHED_EVENT, m_associatedDocumentLoaders);
// It is clear that the origin quota was not reached, so clear the flag if it was set.
m_originQuotaExceededPreviously = false;
} else {
if (failureReason == ApplicationCacheStorage::OriginQuotaReached) {
// We ran out of space for this origin. Fall down to the normal error handling
// after recording this state.
m_originQuotaExceededPreviously = true;
m_frame->document()->addConsoleMessage(OtherMessageSource, ErrorMessageLevel, "Application Cache update failed, because size quota was exceeded.");
}
if (failureReason == ApplicationCacheStorage::TotalQuotaReached && !m_calledReachedMaxAppCacheSize) {
// FIXME: Should this be handled more like Origin Quotas? Does this fail properly?
// We ran out of space. All the changes in the cache storage have
// been rolled back. We roll back to the previous state in here,
// as well, call the chrome client asynchronously and retry to
// save the new cache.
// Save a reference to the new cache.
m_cacheBeingUpdated = m_newestCache.release();
if (oldNewestCache) {
// Reinstate the oldNewestCache.
setNewestCache(oldNewestCache.release());
}
scheduleReachedMaxAppCacheSizeCallback();
return;
}
// Run the "cache failure steps"
// Fire the error events to all pending master entries, as well any other cache hosts
// currently associated with a cache in this group.
postListenerTask(ApplicationCacheHost::ERROR_EVENT, m_associatedDocumentLoaders);
// Disassociate the pending master entries from the failed new cache. Note that
// all other loaders in the m_associatedDocumentLoaders are still associated with
// some other cache in this group. They are not associated with the failed new cache.
// Need to copy loaders, because the cache group may be destroyed at the end of iteration.
Vector<DocumentLoader*> loaders;
copyToVector(m_pendingMasterResourceLoaders, loaders);
size_t count = loaders.size();
for (size_t i = 0; i != count; ++i)
disassociateDocumentLoader(loaders[i]); // This can delete this group.
// Reinstate the oldNewestCache, if there was one.
if (oldNewestCache) {
// This will discard the failed new cache.
setNewestCache(oldNewestCache.release());
} else {
// We must have been deleted by the last call to disassociateDocumentLoader().
return;
}
}
break;
}
}
// Empty cache group's list of pending master entries.
m_pendingMasterResourceLoaders.clear();
m_completionType = None;
setUpdateStatus(Idle);
m_frame = 0;
m_availableSpaceInQuota = ApplicationCacheStorage::unknownQuota();
m_calledReachedMaxAppCacheSize = false;
}
void ApplicationCacheGroup::didFinishLoadingManifest()
{
bool isUpgradeAttempt = m_newestCache;
if (!isUpgradeAttempt && !m_manifestResource) {
// The server returned 304 Not Modified even though we didn't send a conditional request.
m_frame->document()->addConsoleMessage(OtherMessageSource, ErrorMessageLevel, "Application Cache manifest could not be fetched because of an unexpected 304 Not Modified server response.");
cacheUpdateFailed();
return;
}
m_manifestHandle = 0;
// Check if the manifest was not modified.
if (isUpgradeAttempt) {
ApplicationCacheResource* newestManifest = m_newestCache->manifestResource();
ASSERT(newestManifest);
if (!m_manifestResource || // The resource will be null if HTTP response was 304 Not Modified.
(newestManifest->data()->size() == m_manifestResource->data()->size() && !memcmp(newestManifest->data()->data(), m_manifestResource->data()->data(), newestManifest->data()->size()))) {
m_completionType = NoUpdate;
m_manifestResource = 0;
deliverDelayedMainResources();
return;
}
}
Manifest manifest;
if (!parseManifest(m_manifestURL, m_manifestResource->data()->data(), m_manifestResource->data()->size(), manifest)) {
// At the time of this writing, lack of "CACHE MANIFEST" signature is the only reason for parseManifest to fail.
m_frame->document()->addConsoleMessage(OtherMessageSource, ErrorMessageLevel, "Application Cache manifest could not be parsed. Does it start with CACHE MANIFEST?");
cacheUpdateFailed();
return;
}
ASSERT(!m_cacheBeingUpdated);
m_cacheBeingUpdated = ApplicationCache::create();
m_cacheBeingUpdated->setGroup(this);
HashSet<DocumentLoader*>::const_iterator masterEnd = m_pendingMasterResourceLoaders.end();
for (HashSet<DocumentLoader*>::const_iterator iter = m_pendingMasterResourceLoaders.begin(); iter != masterEnd; ++iter)
associateDocumentLoaderWithCache(*iter, m_cacheBeingUpdated.get());
// We have the manifest, now download the resources.
setUpdateStatus(Downloading);
postListenerTask(ApplicationCacheHost::DOWNLOADING_EVENT, m_associatedDocumentLoaders);
ASSERT(m_pendingEntries.isEmpty());
if (isUpgradeAttempt) {
ApplicationCache::ResourceMap::const_iterator end = m_newestCache->end();
for (ApplicationCache::ResourceMap::const_iterator it = m_newestCache->begin(); it != end; ++it) {
unsigned type = it->value->type();
if (type & ApplicationCacheResource::Master)
addEntry(it->key, type);
}
}
HashSet<String>::const_iterator end = manifest.explicitURLs.end();
for (HashSet<String>::const_iterator it = manifest.explicitURLs.begin(); it != end; ++it)
addEntry(*it, ApplicationCacheResource::Explicit);
size_t fallbackCount = manifest.fallbackURLs.size();
for (size_t i = 0; i < fallbackCount; ++i)
addEntry(manifest.fallbackURLs[i].second, ApplicationCacheResource::Fallback);
m_cacheBeingUpdated->setOnlineWhitelist(manifest.onlineWhitelistedURLs);
m_cacheBeingUpdated->setFallbackURLs(manifest.fallbackURLs);
m_cacheBeingUpdated->setAllowsAllNetworkRequests(manifest.allowAllNetworkRequests);
m_progressTotal = m_pendingEntries.size();
m_progressDone = 0;
recalculateAvailableSpaceInQuota();
startLoadingEntry();
}
void ApplicationCacheGroup::didFinishLoadingManifest()
{
bool isUpgradeAttempt = m_newestCache;
if (!isUpgradeAttempt && !m_manifestResource) {
// The server returned 304 Not Modified even though we didn't send a conditional request.
cacheUpdateFailed();
return;
}
m_manifestHandle = 0;
// Check if the manifest was not modified.
if (isUpgradeAttempt) {
ApplicationCacheResource* newestManifest = m_newestCache->manifestResource();
ASSERT(newestManifest);
if (!m_manifestResource || // The resource will be null if HTTP response was 304 Not Modified.
(newestManifest->data()->size() == m_manifestResource->data()->size() && !memcmp(newestManifest->data()->data(), m_manifestResource->data()->data(), newestManifest->data()->size()))) {
m_completionType = NoUpdate;
m_manifestResource = 0;
deliverDelayedMainResources();
return;
}
}
Manifest manifest;
if (!parseManifest(m_manifestURL, m_manifestResource->data()->data(), m_manifestResource->data()->size(), manifest)) {
cacheUpdateFailed();
return;
}
ASSERT(!m_cacheBeingUpdated);
m_cacheBeingUpdated = ApplicationCache::create();
m_cacheBeingUpdated->setGroup(this);
HashSet<DocumentLoader*>::const_iterator masterEnd = m_pendingMasterResourceLoaders.end();
for (HashSet<DocumentLoader*>::const_iterator iter = m_pendingMasterResourceLoaders.begin(); iter != masterEnd; ++iter)
associateDocumentLoaderWithCache(*iter, m_cacheBeingUpdated.get());
// We have the manifest, now download the resources.
setUpdateStatus(Downloading);
postListenerTask(ApplicationCacheHost::DOWNLOADING_EVENT, m_associatedDocumentLoaders);
ASSERT(m_pendingEntries.isEmpty());
if (isUpgradeAttempt) {
ApplicationCache::ResourceMap::const_iterator end = m_newestCache->end();
for (ApplicationCache::ResourceMap::const_iterator it = m_newestCache->begin(); it != end; ++it) {
unsigned type = it->second->type();
if (type & ApplicationCacheResource::Master)
addEntry(it->first, type);
}
}
HashSet<String>::const_iterator end = manifest.explicitURLs.end();
for (HashSet<String>::const_iterator it = manifest.explicitURLs.begin(); it != end; ++it)
addEntry(*it, ApplicationCacheResource::Explicit);
size_t fallbackCount = manifest.fallbackURLs.size();
for (size_t i = 0; i < fallbackCount; ++i)
addEntry(manifest.fallbackURLs[i].second, ApplicationCacheResource::Fallback);
m_cacheBeingUpdated->setOnlineWhitelist(manifest.onlineWhitelistedURLs);
m_cacheBeingUpdated->setFallbackURLs(manifest.fallbackURLs);
m_cacheBeingUpdated->setAllowsAllNetworkRequests(manifest.allowAllNetworkRequests);
m_progressTotal = m_pendingEntries.size();
m_progressDone = 0;
startLoadingEntry();
}
void ApplicationCacheGroup::postListenerTask(ApplicationCacheHost::EventID eventID, int progressTotal, int progressDone, const HashSet<DocumentLoader*>& loaderSet)
{
HashSet<DocumentLoader*>::const_iterator loaderSetEnd = loaderSet.end();
for (HashSet<DocumentLoader*>::const_iterator iter = loaderSet.begin(); iter != loaderSetEnd; ++iter)
postListenerTask(eventID, progressTotal, progressDone, *iter);
}
void ApplicationCacheGroup::didFinishLoadingManifest()
{
bool isUpgradeAttempt = m_newestCache;
if (!isUpgradeAttempt && !m_manifestResource) {
// The server returned 304 Not Modified even though we didn't send a conditional request.
m_frame->document()->addConsoleMessage(MessageSource::AppCache, MessageLevel::Error, ASCIILiteral("Application Cache manifest could not be fetched because of an unexpected 304 Not Modified server response."));
cacheUpdateFailed();
return;
}
m_manifestHandle = nullptr;
// Check if the manifest was not modified.
if (isUpgradeAttempt) {
ApplicationCacheResource* newestManifest = m_newestCache->manifestResource();
ASSERT(newestManifest);
if (!m_manifestResource || // The resource will be null if HTTP response was 304 Not Modified.
(newestManifest->data().size() == m_manifestResource->data().size() && !memcmp(newestManifest->data().data(), m_manifestResource->data().data(), newestManifest->data().size()))) {
m_completionType = NoUpdate;
m_manifestResource = nullptr;
deliverDelayedMainResources();
return;
}
}
Manifest manifest;
if (!parseManifest(m_manifestURL, m_manifestResource->data().data(), m_manifestResource->data().size(), manifest)) {
// At the time of this writing, lack of "CACHE MANIFEST" signature is the only reason for parseManifest to fail.
m_frame->document()->addConsoleMessage(MessageSource::AppCache, MessageLevel::Error, ASCIILiteral("Application Cache manifest could not be parsed. Does it start with CACHE MANIFEST?"));
cacheUpdateFailed();
return;
}
ASSERT(!m_cacheBeingUpdated);
m_cacheBeingUpdated = ApplicationCache::create();
m_cacheBeingUpdated->setGroup(this);
for (auto& loader : m_pendingMasterResourceLoaders)
associateDocumentLoaderWithCache(loader, m_cacheBeingUpdated.get());
// We have the manifest, now download the resources.
setUpdateStatus(Downloading);
postListenerTask(ApplicationCacheHost::DOWNLOADING_EVENT, m_associatedDocumentLoaders);
ASSERT(m_pendingEntries.isEmpty());
if (isUpgradeAttempt) {
for (const auto& urlAndResource : m_newestCache->resources()) {
unsigned type = urlAndResource.value->type();
if (type & ApplicationCacheResource::Master)
addEntry(urlAndResource.key, type);
}
}
for (const auto& explicitURL : manifest.explicitURLs)
addEntry(explicitURL, ApplicationCacheResource::Explicit);
for (auto& fallbackURL : manifest.fallbackURLs)
addEntry(fallbackURL.second, ApplicationCacheResource::Fallback);
m_cacheBeingUpdated->setOnlineWhitelist(manifest.onlineWhitelistedURLs);
m_cacheBeingUpdated->setFallbackURLs(manifest.fallbackURLs);
m_cacheBeingUpdated->setAllowsAllNetworkRequests(manifest.allowAllNetworkRequests);
m_progressTotal = m_pendingEntries.size();
m_progressDone = 0;
recalculateAvailableSpaceInQuota();
startLoadingEntry();
}
void ApplicationCacheGroup::selectCache(Frame* frame, const URL& passedManifestURL)
{
ASSERT(frame && frame->page());
if (!frame->settings().offlineWebApplicationCacheEnabled())
return;
DocumentLoader* documentLoader = frame->loader().documentLoader();
ASSERT(!documentLoader->applicationCacheHost()->applicationCache());
if (passedManifestURL.isNull()) {
selectCacheWithoutManifestURL(frame);
return;
}
// Don't access anything on disk if private browsing is enabled.
if (frame->page()->usesEphemeralSession() || !frame->document()->securityOrigin()->canAccessApplicationCache(frame->tree().top().document()->securityOrigin())) {
postListenerTask(ApplicationCacheHost::CHECKING_EVENT, documentLoader);
postListenerTask(ApplicationCacheHost::ERROR_EVENT, documentLoader);
return;
}
URL manifestURL(passedManifestURL);
if (manifestURL.hasFragmentIdentifier())
manifestURL.removeFragmentIdentifier();
ApplicationCache* mainResourceCache = documentLoader->applicationCacheHost()->mainResourceApplicationCache();
if (mainResourceCache) {
if (manifestURL == mainResourceCache->group()->m_manifestURL) {
// The cache may have gotten obsoleted after we've loaded from it, but before we parsed the document and saw cache manifest.
if (mainResourceCache->group()->isObsolete())
return;
mainResourceCache->group()->associateDocumentLoaderWithCache(documentLoader, mainResourceCache);
mainResourceCache->group()->update(frame, ApplicationCacheUpdateWithBrowsingContext);
} else {
// The main resource was loaded from cache, so the cache must have an entry for it. Mark it as foreign.
URL resourceURL(documentLoader->responseURL());
if (resourceURL.hasFragmentIdentifier())
resourceURL.removeFragmentIdentifier();
ApplicationCacheResource* resource = mainResourceCache->resourceForURL(resourceURL);
bool inStorage = resource->storageID();
resource->addType(ApplicationCacheResource::Foreign);
if (inStorage)
frame->page()->applicationCacheStorage().storeUpdatedType(resource, mainResourceCache);
// Restart the current navigation from the top of the navigation algorithm, undoing any changes that were made
// as part of the initial load.
// The navigation will not result in the same resource being loaded, because "foreign" entries are never picked during navigation.
frame->navigationScheduler().scheduleLocationChange(frame->document(), frame->document()->securityOrigin(), documentLoader->url(), frame->loader().referrer());
}
return;
}
// The resource was loaded from the network, check if it is a HTTP/HTTPS GET.
const ResourceRequest& request = frame->loader().activeDocumentLoader()->request();
if (!ApplicationCache::requestIsHTTPOrHTTPSGet(request))
return;
// Check that the resource URL has the same scheme/host/port as the manifest URL.
if (!protocolHostAndPortAreEqual(manifestURL, request.url()))
return;
ApplicationCacheGroup* group = frame->page()->applicationCacheStorage().findOrCreateCacheGroup(manifestURL);
documentLoader->applicationCacheHost()->setCandidateApplicationCacheGroup(group);
group->m_pendingMasterResourceLoaders.add(documentLoader);
group->m_downloadingPendingMasterResourceLoadersCount++;
ASSERT(!group->m_cacheBeingUpdated || group->m_updateStatus != Idle);
group->update(frame, ApplicationCacheUpdateWithBrowsingContext);
}
void ApplicationCacheGroup::postListenerTask(ApplicationCacheHost::EventID eventID, int progressTotal, int progressDone, const HashSet<DocumentLoader*>& loaderSet)
{
for (auto& loader : loaderSet)
postListenerTask(eventID, progressTotal, progressDone, loader);
}
