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Diffstat (limited to 'uriloader/base/nsDocLoader.cpp')
| -rw-r--r-- | uriloader/base/nsDocLoader.cpp | 1588 |
1 files changed, 1588 insertions, 0 deletions
diff --git a/uriloader/base/nsDocLoader.cpp b/uriloader/base/nsDocLoader.cpp new file mode 100644 index 0000000000..fe72a2715d --- /dev/null +++ b/uriloader/base/nsDocLoader.cpp @@ -0,0 +1,1588 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#include "nspr.h" +#include "mozilla/dom/BrowserChild.h" +#include "mozilla/dom/Document.h" +#include "mozilla/BasicEvents.h" +#include "mozilla/Components.h" +#include "mozilla/EventDispatcher.h" +#include "mozilla/Logging.h" +#include "mozilla/IntegerPrintfMacros.h" +#include "mozilla/PresShell.h" + +#include "nsDocLoader.h" +#include "nsDocShell.h" +#include "nsLoadGroup.h" +#include "nsNetUtil.h" +#include "nsIHttpChannel.h" +#include "nsIWebNavigation.h" +#include "nsIWebProgressListener2.h" + +#include "nsString.h" + +#include "nsCOMPtr.h" +#include "nscore.h" +#include "nsIWeakReferenceUtils.h" +#include "nsQueryObject.h" + +#include "nsPIDOMWindow.h" + +#include "nsIStringBundle.h" + +#include "nsIDocShell.h" +#include "mozilla/dom/Document.h" +#include "mozilla/dom/DocGroup.h" +#include "nsPresContext.h" +#include "nsIAsyncVerifyRedirectCallback.h" +#include "nsIBrowserDOMWindow.h" +#include "mozilla/ThrottledEventQueue.h" +using namespace mozilla; +using mozilla::DebugOnly; +using mozilla::eLoad; +using mozilla::EventDispatcher; +using mozilla::LogLevel; +using mozilla::WidgetEvent; +using mozilla::dom::BrowserChild; +using mozilla::dom::BrowsingContext; +using mozilla::dom::Document; + +// +// Log module for nsIDocumentLoader logging... +// +// To enable logging (see mozilla/Logging.h for full details): +// +// set MOZ_LOG=DocLoader:5 +// set MOZ_LOG_FILE=debug.log +// +// this enables LogLevel::Debug level information and places all output in +// the file 'debug.log'. +// +mozilla::LazyLogModule gDocLoaderLog("DocLoader"); + +#if defined(DEBUG) +void GetURIStringFromRequest(nsIRequest* request, nsACString& name) { + if (request) + request->GetName(name); + else + name.AssignLiteral("???"); +} +#endif /* DEBUG */ + +void nsDocLoader::RequestInfoHashInitEntry(PLDHashEntryHdr* entry, + const void* key) { + // Initialize the entry with placement new + new (entry) nsRequestInfo(key); +} + +void nsDocLoader::RequestInfoHashClearEntry(PLDHashTable* table, + PLDHashEntryHdr* entry) { + nsRequestInfo* info = static_cast<nsRequestInfo*>(entry); + info->~nsRequestInfo(); +} + +// this is used for mListenerInfoList.Contains() +template <> +class nsDefaultComparator<nsDocLoader::nsListenerInfo, + nsIWebProgressListener*> { + public: + bool Equals(const nsDocLoader::nsListenerInfo& aInfo, + nsIWebProgressListener* const& aListener) const { + nsCOMPtr<nsIWebProgressListener> listener = + do_QueryReferent(aInfo.mWeakListener); + return aListener == listener; + } +}; + +/* static */ const PLDHashTableOps nsDocLoader::sRequestInfoHashOps = { + PLDHashTable::HashVoidPtrKeyStub, PLDHashTable::MatchEntryStub, + PLDHashTable::MoveEntryStub, nsDocLoader::RequestInfoHashClearEntry, + nsDocLoader::RequestInfoHashInitEntry}; + +nsDocLoader::nsDocLoader(bool aNotifyAboutBackgroundRequests) + : mParent(nullptr), + mProgressStateFlags(0), + mCurrentSelfProgress(0), + mMaxSelfProgress(0), + mCurrentTotalProgress(0), + mMaxTotalProgress(0), + mRequestInfoHash(&sRequestInfoHashOps, sizeof(nsRequestInfo)), + mCompletedTotalProgress(0), + mIsLoadingDocument(false), + mIsRestoringDocument(false), + mDontFlushLayout(false), + mIsFlushingLayout(false), + mDocumentOpenedButNotLoaded(false), + mNotifyAboutBackgroundRequests(aNotifyAboutBackgroundRequests) { + ClearInternalProgress(); + + MOZ_LOG(gDocLoaderLog, LogLevel::Debug, ("DocLoader:%p: created.\n", this)); +} + +nsresult nsDocLoader::SetDocLoaderParent(nsDocLoader* aParent) { + mParent = aParent; + return NS_OK; +} + +nsresult nsDocLoader::Init() { + RefPtr<net::nsLoadGroup> loadGroup = new net::nsLoadGroup(); + nsresult rv = loadGroup->Init(); + if (NS_FAILED(rv)) return rv; + + loadGroup->SetGroupObserver(this, mNotifyAboutBackgroundRequests); + + mLoadGroup = loadGroup; + + MOZ_LOG(gDocLoaderLog, LogLevel::Debug, + ("DocLoader:%p: load group %p.\n", this, mLoadGroup.get())); + + return NS_OK; +} + +nsresult nsDocLoader::InitWithBrowsingContext( + BrowsingContext* aBrowsingContext) { + RefPtr<net::nsLoadGroup> loadGroup = new net::nsLoadGroup(); + if (!aBrowsingContext->GetRequestContextId()) { + return NS_ERROR_NOT_AVAILABLE; + } + nsresult rv = loadGroup->InitWithRequestContextId( + aBrowsingContext->GetRequestContextId()); + if (NS_FAILED(rv)) return rv; + + loadGroup->SetGroupObserver(this, mNotifyAboutBackgroundRequests); + + mLoadGroup = loadGroup; + + MOZ_LOG(gDocLoaderLog, LogLevel::Debug, + ("DocLoader:%p: load group %p.\n", this, mLoadGroup.get())); + + return NS_OK; +} + +nsDocLoader::~nsDocLoader() { + /* + |ClearWeakReferences()| here is intended to prevent people holding + weak references from re-entering this destructor since |QueryReferent()| + will |AddRef()| me, and the subsequent |Release()| will try to destroy me. + At this point there should be only weak references remaining (otherwise, we + wouldn't be getting destroyed). + + An alternative would be incrementing our refcount (consider it a + compressed flag saying "Don't re-destroy."). I haven't yet decided which + is better. [scc] + */ + // XXXbz now that NS_IMPL_RELEASE stabilizes by setting refcount to 1, is + // this needed? + ClearWeakReferences(); + + Destroy(); + + MOZ_LOG(gDocLoaderLog, LogLevel::Debug, ("DocLoader:%p: deleted.\n", this)); +} + +/* + * Implementation of ISupports methods... + */ +NS_IMPL_CYCLE_COLLECTING_ADDREF(nsDocLoader) +NS_IMPL_CYCLE_COLLECTING_RELEASE(nsDocLoader) + +NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsDocLoader) + NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIDocumentLoader) + NS_INTERFACE_MAP_ENTRY(nsIRequestObserver) + NS_INTERFACE_MAP_ENTRY(nsIDocumentLoader) + NS_INTERFACE_MAP_ENTRY(nsISupportsWeakReference) + NS_INTERFACE_MAP_ENTRY(nsIWebProgress) + NS_INTERFACE_MAP_ENTRY(nsIProgressEventSink) + NS_INTERFACE_MAP_ENTRY(nsIInterfaceRequestor) + NS_INTERFACE_MAP_ENTRY(nsIChannelEventSink) + NS_INTERFACE_MAP_ENTRY(nsISupportsPriority) + NS_INTERFACE_MAP_ENTRY_CONCRETE(nsDocLoader) +NS_INTERFACE_MAP_END + +NS_IMPL_CYCLE_COLLECTION_WEAK(nsDocLoader, mChildrenInOnload) + +/* + * Implementation of nsIInterfaceRequestor methods... + */ +NS_IMETHODIMP nsDocLoader::GetInterface(const nsIID& aIID, void** aSink) { + nsresult rv = NS_ERROR_NO_INTERFACE; + + NS_ENSURE_ARG_POINTER(aSink); + + if (aIID.Equals(NS_GET_IID(nsILoadGroup))) { + *aSink = mLoadGroup; + NS_IF_ADDREF((nsISupports*)*aSink); + rv = NS_OK; + } else { + rv = QueryInterface(aIID, aSink); + } + + return rv; +} + +/* static */ +already_AddRefed<nsDocLoader> nsDocLoader::GetAsDocLoader( + nsISupports* aSupports) { + RefPtr<nsDocLoader> ret = do_QueryObject(aSupports); + return ret.forget(); +} + +/* static */ +nsresult nsDocLoader::AddDocLoaderAsChildOfRoot(nsDocLoader* aDocLoader) { + nsCOMPtr<nsIDocumentLoader> docLoaderService = + components::DocLoader::Service(); + NS_ENSURE_TRUE(docLoaderService, NS_ERROR_UNEXPECTED); + + RefPtr<nsDocLoader> rootDocLoader = GetAsDocLoader(docLoaderService); + NS_ENSURE_TRUE(rootDocLoader, NS_ERROR_UNEXPECTED); + + return rootDocLoader->AddChildLoader(aDocLoader); +} + +// TODO: Convert this to MOZ_CAN_RUN_SCRIPT (bug 1415230) +MOZ_CAN_RUN_SCRIPT_BOUNDARY NS_IMETHODIMP nsDocLoader::Stop(void) { + nsresult rv = NS_OK; + + MOZ_LOG(gDocLoaderLog, LogLevel::Debug, + ("DocLoader:%p: Stop() called\n", this)); + + NS_OBSERVER_ARRAY_NOTIFY_XPCOM_OBSERVERS(mChildList, Stop, ()); + + if (mLoadGroup) { + rv = mLoadGroup->CancelWithReason(NS_BINDING_ABORTED, + "nsDocLoader::Stop"_ns); + } + + // Don't report that we're flushing layout so IsBusy returns false after a + // Stop call. + mIsFlushingLayout = false; + + // Clear out mChildrenInOnload. We're not going to fire our onload + // anyway at this point, and there's no issue with mChildrenInOnload + // after this, since mDocumentRequest will be null after the + // DocLoaderIsEmpty() call. + mChildrenInOnload.Clear(); + nsCOMPtr<nsIDocShell> ds = do_QueryInterface(GetAsSupports(this)); + Document* doc = ds ? ds->GetExtantDocument() : nullptr; + if (doc) { + doc->ClearOOPChildrenLoading(); + } + + // Make sure to call DocLoaderIsEmpty now so that we reset mDocumentRequest, + // etc, as needed. We could be getting into here from a subframe onload, in + // which case the call to DocLoaderIsEmpty() is coming but hasn't quite + // happened yet, Canceling the loadgroup did nothing (because it was already + // empty), and we're about to start a new load (which is what triggered this + // Stop() call). + + // XXXbz If the child frame loadgroups were requests in mLoadgroup, I suspect + // we wouldn't need the call here.... + + NS_ASSERTION(!IsBusy(), "Shouldn't be busy here"); + + // If Cancelling the load group only had pending subresource requests, then + // the group status will still be success, and we would fire the load event. + // We want to avoid that when we're aborting the load, so override the status + // with an explicit NS_BINDING_ABORTED value. + DocLoaderIsEmpty(false, Some(NS_BINDING_ABORTED)); + + return rv; +} + +bool nsDocLoader::IsBusy() { + nsresult rv; + + // + // A document loader is busy if either: + // + // 1. One of its children is in the middle of an onload handler. Note that + // the handler may have already removed this child from mChildList! + // 2. It is currently loading a document and either has parts of it still + // loading, or has a busy child docloader. + // 3. It's currently flushing layout in DocLoaderIsEmpty(). + // + + nsCOMPtr<nsIDocShell> ds = do_QueryInterface(GetAsSupports(this)); + Document* doc = ds ? ds->GetExtantDocument() : nullptr; + if (!mChildrenInOnload.IsEmpty() || (doc && doc->HasOOPChildrenLoading()) || + mIsFlushingLayout) { + return true; + } + + /* Is this document loader busy? */ + if (!IsBlockingLoadEvent()) { + return false; + } + + // Check if any in-process sub-document is awaiting its 'load' event: + bool busy; + rv = mLoadGroup->IsPending(&busy); + if (NS_FAILED(rv)) { + return false; + } + if (busy) { + return true; + } + + /* check its child document loaders... */ + uint32_t count = mChildList.Length(); + for (uint32_t i = 0; i < count; i++) { + nsIDocumentLoader* loader = ChildAt(i); + // This is a safe cast, because we only put nsDocLoader objects into the + // array + if (loader && static_cast<nsDocLoader*>(loader)->IsBusy()) { + return true; + } + } + + return false; +} + +NS_IMETHODIMP +nsDocLoader::GetContainer(nsISupports** aResult) { + NS_ADDREF(*aResult = static_cast<nsIDocumentLoader*>(this)); + + return NS_OK; +} + +NS_IMETHODIMP +nsDocLoader::GetLoadGroup(nsILoadGroup** aResult) { + nsresult rv = NS_OK; + + if (nullptr == aResult) { + rv = NS_ERROR_NULL_POINTER; + } else { + *aResult = mLoadGroup; + NS_IF_ADDREF(*aResult); + } + return rv; +} + +void nsDocLoader::Destroy() { + Stop(); + + // Remove the document loader from the parent list of loaders... + if (mParent) { + DebugOnly<nsresult> rv = mParent->RemoveChildLoader(this); + NS_WARNING_ASSERTION(NS_SUCCEEDED(rv), "RemoveChildLoader failed"); + } + + // Release all the information about network requests... + ClearRequestInfoHash(); + + mListenerInfoList.Clear(); + mListenerInfoList.Compact(); + + mDocumentRequest = nullptr; + + if (mLoadGroup) mLoadGroup->SetGroupObserver(nullptr); + + DestroyChildren(); +} + +void nsDocLoader::DestroyChildren() { + uint32_t count = mChildList.Length(); + // if the doc loader still has children...we need to enumerate the + // children and make them null out their back ptr to the parent doc + // loader + for (uint32_t i = 0; i < count; i++) { + nsIDocumentLoader* loader = ChildAt(i); + + if (loader) { + // This is a safe cast, as we only put nsDocLoader objects into the + // array + DebugOnly<nsresult> rv = + static_cast<nsDocLoader*>(loader)->SetDocLoaderParent(nullptr); + NS_WARNING_ASSERTION(NS_SUCCEEDED(rv), "SetDocLoaderParent failed"); + } + } + mChildList.Clear(); +} + +NS_IMETHODIMP +nsDocLoader::OnStartRequest(nsIRequest* request) { + // called each time a request is added to the group. + + // Some docloaders deal with background requests in their OnStartRequest + // override, but here we don't want to do anything with them, so return early. + nsLoadFlags loadFlags = 0; + request->GetLoadFlags(&loadFlags); + if (loadFlags & nsIRequest::LOAD_BACKGROUND) { + return NS_OK; + } + + if (MOZ_LOG_TEST(gDocLoaderLog, LogLevel::Debug)) { + nsAutoCString name; + request->GetName(name); + + uint32_t count = 0; + if (mLoadGroup) mLoadGroup->GetActiveCount(&count); + + MOZ_LOG(gDocLoaderLog, LogLevel::Debug, + ("DocLoader:%p: OnStartRequest[%p](%s) mIsLoadingDocument=%s, %u " + "active URLs", + this, request, name.get(), (mIsLoadingDocument ? "true" : "false"), + count)); + } + + bool justStartedLoading = false; + + if (!mIsLoadingDocument && (loadFlags & nsIChannel::LOAD_DOCUMENT_URI)) { + justStartedLoading = true; + mIsLoadingDocument = true; + mDocumentOpenedButNotLoaded = false; + ClearInternalProgress(); // only clear our progress if we are starting a + // new load.... + } + + // + // Create a new nsRequestInfo for the request that is starting to + // load... + // + AddRequestInfo(request); + + // + // Only fire a doStartDocumentLoad(...) if the document loader + // has initiated a load... Otherwise, this notification has + // resulted from a request being added to the load group. + // + if (mIsLoadingDocument) { + if (loadFlags & nsIChannel::LOAD_DOCUMENT_URI) { + // + // Make sure that the document channel is null at this point... + // (unless its been redirected) + // + NS_ASSERTION( + (loadFlags & nsIChannel::LOAD_REPLACE) || !(mDocumentRequest.get()), + "Overwriting an existing document channel!"); + + // This request is associated with the entire document... + mDocumentRequest = request; + mLoadGroup->SetDefaultLoadRequest(request); + + // Only fire the start document load notification for the first + // document URI... Do not fire it again for redirections + // + if (justStartedLoading) { + // Update the progress status state + mProgressStateFlags = nsIWebProgressListener::STATE_START; + + // Fire the start document load notification + doStartDocumentLoad(); + return NS_OK; + } + } + } + + NS_ASSERTION(!mIsLoadingDocument || mDocumentRequest, + "mDocumentRequest MUST be set for the duration of a page load!"); + + // This is the only way to catch document request start event after a redirect + // has occured without changing inherited Firefox behaviour significantly. + // Problem description: + // The combination of |STATE_START + STATE_IS_DOCUMENT| is only sent for + // initial request (see |doStartDocumentLoad| call above). + // And |STATE_REDIRECTING + STATE_IS_DOCUMENT| is sent with old channel, which + // makes it impossible to filter by destination URL (see + // |AsyncOnChannelRedirect| implementation). + // Fixing any of those bugs may cause unpredictable consequences in any part + // of the browser, so we just add a custom flag for this exact situation. + int32_t extraFlags = 0; + if (mIsLoadingDocument && !justStartedLoading && + (loadFlags & nsIChannel::LOAD_DOCUMENT_URI) && + (loadFlags & nsIChannel::LOAD_REPLACE)) { + extraFlags = nsIWebProgressListener::STATE_IS_REDIRECTED_DOCUMENT; + } + doStartURLLoad(request, extraFlags); + + return NS_OK; +} + +// TODO: Convert this to MOZ_CAN_RUN_SCRIPT (bug 1415230) +MOZ_CAN_RUN_SCRIPT_BOUNDARY NS_IMETHODIMP +nsDocLoader::OnStopRequest(nsIRequest* aRequest, nsresult aStatus) { + // Some docloaders deal with background requests in their OnStopRequest + // override, but here we don't want to do anything with them, so return early. + nsLoadFlags lf = 0; + aRequest->GetLoadFlags(&lf); + if (lf & nsIRequest::LOAD_BACKGROUND) { + return NS_OK; + } + + nsresult rv = NS_OK; + + if (MOZ_LOG_TEST(gDocLoaderLog, LogLevel::Debug)) { + nsAutoCString name; + aRequest->GetName(name); + + uint32_t count = 0; + if (mLoadGroup) mLoadGroup->GetActiveCount(&count); + + MOZ_LOG(gDocLoaderLog, LogLevel::Debug, + ("DocLoader:%p: OnStopRequest[%p](%s) status=%" PRIx32 + " mIsLoadingDocument=%s, mDocumentOpenedButNotLoaded=%s," + " %u active URLs", + this, aRequest, name.get(), static_cast<uint32_t>(aStatus), + (mIsLoadingDocument ? "true" : "false"), + (mDocumentOpenedButNotLoaded ? "true" : "false"), count)); + } + + bool fireTransferring = false; + + // + // Set the Maximum progress to the same value as the current progress. + // Since the URI has finished loading, all the data is there. Also, + // this will allow a more accurate estimation of the max progress (in case + // the old value was unknown ie. -1) + // + nsRequestInfo* info = GetRequestInfo(aRequest); + if (info) { + // Null out mLastStatus now so we don't find it when looking for + // status from now on. This destroys the nsStatusInfo and hence + // removes it from our list. + info->mLastStatus = nullptr; + + int64_t oldMax = info->mMaxProgress; + + info->mMaxProgress = info->mCurrentProgress; + + // + // If a request whose content-length was previously unknown has just + // finished loading, then use this new data to try to calculate a + // mMaxSelfProgress... + // + if ((oldMax < int64_t(0)) && (mMaxSelfProgress < int64_t(0))) { + mMaxSelfProgress = CalculateMaxProgress(); + } + + // As we know the total progress of this request now, save it to be part + // of CalculateMaxProgress() result. We need to remove the info from the + // hash, see bug 480713. + mCompletedTotalProgress += info->mMaxProgress; + + // + // Determine whether a STATE_TRANSFERRING notification should be + // 'synthesized'. + // + // If nsRequestInfo::mMaxProgress (as stored in oldMax) and + // nsRequestInfo::mCurrentProgress are both 0, then the + // STATE_TRANSFERRING notification has not been fired yet... + // + if ((oldMax == 0) && (info->mCurrentProgress == 0)) { + nsCOMPtr<nsIChannel> channel(do_QueryInterface(aRequest)); + + // Only fire a TRANSFERRING notification if the request is also a + // channel -- data transfer requires a nsIChannel! + // + if (channel) { + if (NS_SUCCEEDED(aStatus)) { + fireTransferring = true; + } + // + // If the request failed (for any reason other than being + // redirected or retargeted), the TRANSFERRING notification can + // still be fired if a HTTP connection was established to a server. + // + else if (aStatus != NS_BINDING_REDIRECTED && + aStatus != NS_BINDING_RETARGETED) { + // + // Only if the load has been targeted (see bug 268483)... + // + if (lf & nsIChannel::LOAD_TARGETED) { + nsCOMPtr<nsIHttpChannel> httpChannel(do_QueryInterface(aRequest)); + if (httpChannel) { + uint32_t responseCode; + rv = httpChannel->GetResponseStatus(&responseCode); + if (NS_SUCCEEDED(rv)) { + // + // A valid server status indicates that a connection was + // established to the server... So, fire the notification + // even though a failure occurred later... + // + fireTransferring = true; + } + } + } + } + } + } + } + + if (fireTransferring) { + // Send a STATE_TRANSFERRING notification for the request. + int32_t flags; + + flags = nsIWebProgressListener::STATE_TRANSFERRING | + nsIWebProgressListener::STATE_IS_REQUEST; + // + // Move the WebProgress into the STATE_TRANSFERRING state if necessary... + // + if (mProgressStateFlags & nsIWebProgressListener::STATE_START) { + mProgressStateFlags = nsIWebProgressListener::STATE_TRANSFERRING; + + // Send STATE_TRANSFERRING for the document too... + flags |= nsIWebProgressListener::STATE_IS_DOCUMENT; + } + + FireOnStateChange(this, aRequest, flags, NS_OK); + } + + // + // Fire the OnStateChange(...) notification for stop request + // + doStopURLLoad(aRequest, aStatus); + + // Clear this request out of the hash to avoid bypass of FireOnStateChange + // when address of the request is reused. + RemoveRequestInfo(aRequest); + + // For the special case where the current document is an initial about:blank + // document, we may still have subframes loading, and keeping the DocLoader + // busy. In that case, if we have an error, we won't show it until those + // frames finish loading, which is nonsensical. So stop any subframe loads + // now. + if (NS_FAILED(aStatus) && aStatus != NS_BINDING_ABORTED && + aStatus != NS_BINDING_REDIRECTED && aStatus != NS_BINDING_RETARGETED) { + if (RefPtr<Document> doc = do_GetInterface(GetAsSupports(this))) { + if (doc->IsInitialDocument()) { + NS_OBSERVER_ARRAY_NOTIFY_XPCOM_OBSERVERS(mChildList, Stop, ()); + } + } + } + + // + // Only fire the DocLoaderIsEmpty(...) if we may need to fire onload. + // + if (IsBlockingLoadEvent()) { + nsCOMPtr<nsIDocShell> ds = + do_QueryInterface(static_cast<nsIRequestObserver*>(this)); + bool doNotFlushLayout = false; + if (ds) { + // Don't do unexpected layout flushes while we're in process of restoring + // a document from the bfcache. + ds->GetRestoringDocument(&doNotFlushLayout); + } + DocLoaderIsEmpty(!doNotFlushLayout); + } + + return NS_OK; +} + +nsresult nsDocLoader::RemoveChildLoader(nsDocLoader* aChild) { + nsresult rv = mChildList.RemoveElement(aChild) ? NS_OK : NS_ERROR_FAILURE; + if (NS_SUCCEEDED(rv)) { + rv = aChild->SetDocLoaderParent(nullptr); + } + return rv; +} + +nsresult nsDocLoader::AddChildLoader(nsDocLoader* aChild) { + mChildList.AppendElement(aChild); + return aChild->SetDocLoaderParent(this); +} + +NS_IMETHODIMP nsDocLoader::GetDocumentChannel(nsIChannel** aChannel) { + if (!mDocumentRequest) { + *aChannel = nullptr; + return NS_OK; + } + + return CallQueryInterface(mDocumentRequest, aChannel); +} + +void nsDocLoader::DocLoaderIsEmpty(bool aFlushLayout, + const Maybe<nsresult>& aOverrideStatus) { + if (IsBlockingLoadEvent()) { + /* In the unimagineably rude circumstance that onload event handlers + triggered by this function actually kill the window ... ok, it's + not unimagineable; it's happened ... this deathgrip keeps this object + alive long enough to survive this function call. */ + nsCOMPtr<nsIDocumentLoader> kungFuDeathGrip(this); + + // Don't flush layout if we're still busy. + if (IsBusy()) { + return; + } + + NS_ASSERTION(!mIsFlushingLayout, "Someone screwed up"); + // We may not have a document request if we are in a + // document.open() situation. + NS_ASSERTION(mDocumentRequest || mDocumentOpenedButNotLoaded, + "No Document Request!"); + + // The load group for this DocumentLoader is idle. Flush if we need to. + if (aFlushLayout && !mDontFlushLayout) { + nsCOMPtr<Document> doc = do_GetInterface(GetAsSupports(this)); + if (doc) { + // We start loads from style resolution, so we need to flush out style + // no matter what. If we have user fonts, we also need to flush layout, + // since the reflow is what starts font loads. + mozilla::FlushType flushType = mozilla::FlushType::Style; + // Be safe in case this presshell is in teardown now + doc->FlushUserFontSet(); + if (doc->GetUserFontSet()) { + flushType = mozilla::FlushType::Layout; + } + mDontFlushLayout = mIsFlushingLayout = true; + doc->FlushPendingNotifications(flushType); + mDontFlushLayout = mIsFlushingLayout = false; + } + } + + // And now check whether we're really busy; that might have changed with + // the layout flush. + // + // Note, mDocumentRequest can be null while mDocumentOpenedButNotLoaded is + // false if the flushing above re-entered this method. + if (IsBusy() || (!mDocumentRequest && !mDocumentOpenedButNotLoaded)) { + return; + } + + if (mDocumentRequest) { + // Clear out our request info hash, now that our load really is done and + // we don't need it anymore to CalculateMaxProgress(). + ClearInternalProgress(); + + MOZ_LOG(gDocLoaderLog, LogLevel::Debug, + ("DocLoader:%p: Is now idle...\n", this)); + + nsCOMPtr<nsIRequest> docRequest = mDocumentRequest; + + mDocumentRequest = nullptr; + mIsLoadingDocument = false; + + // Update the progress status state - the document is done + mProgressStateFlags = nsIWebProgressListener::STATE_STOP; + + nsresult loadGroupStatus = NS_OK; + if (aOverrideStatus) { + loadGroupStatus = *aOverrideStatus; + } else { + mLoadGroup->GetStatus(&loadGroupStatus); + } + + // + // New code to break the circular reference between + // the load group and the docloader... + // + mLoadGroup->SetDefaultLoadRequest(nullptr); + + // Take a ref to our parent now so that we can call ChildDoneWithOnload() + // on it even if our onload handler removes us from the docloader tree. + RefPtr<nsDocLoader> parent = mParent; + + // Note that if calling ChildEnteringOnload() on the parent returns false + // then calling our onload handler is not safe. That can only happen on + // OOM, so that's ok. + if (!parent || parent->ChildEnteringOnload(this)) { + // Do nothing with our state after firing the + // OnEndDocumentLoad(...). The document loader may be loading a *new* + // document - if LoadDocument() was called from a handler! + // + doStopDocumentLoad(docRequest, loadGroupStatus); + + NotifyDoneWithOnload(parent); + } + } else { + MOZ_ASSERT(mDocumentOpenedButNotLoaded); + mDocumentOpenedButNotLoaded = false; + + // Make sure we do the ChildEnteringOnload/ChildDoneWithOnload even if we + // plan to skip firing our own load event, because otherwise we might + // never end up firing our parent's load event. + RefPtr<nsDocLoader> parent = mParent; + if (!parent || parent->ChildEnteringOnload(this)) { + nsresult loadGroupStatus = NS_OK; + mLoadGroup->GetStatus(&loadGroupStatus); + // Make sure we're not canceling the loadgroup. If we are, then just + // like the normal navigation case we should not fire a load event. + if (NS_SUCCEEDED(loadGroupStatus) || + loadGroupStatus == NS_ERROR_PARSED_DATA_CACHED) { + // Can "doc" or "window" ever come back null here? Our state machine + // is complicated enough I wouldn't bet against it... + if (nsCOMPtr<Document> doc = do_GetInterface(GetAsSupports(this))) { + doc->SetReadyStateInternal(Document::READYSTATE_COMPLETE, + /* updateTimingInformation = */ false); + doc->StopDocumentLoad(); + + nsCOMPtr<nsPIDOMWindowOuter> window = doc->GetWindow(); + if (window && !doc->SkipLoadEventAfterClose()) { + MOZ_LOG(gDocLoaderLog, LogLevel::Debug, + ("DocLoader:%p: Firing load event for document.open\n", + this)); + + // This is a very cut-down version of + // nsDocumentViewer::LoadComplete that doesn't do various things + // that are not relevant here because this wasn't an actual + // navigation. + WidgetEvent event(true, eLoad); + event.mFlags.mBubbles = false; + event.mFlags.mCancelable = false; + // Dispatching to |window|, but using |document| as the target, + // per spec. + event.mTarget = doc; + nsEventStatus unused = nsEventStatus_eIgnore; + doc->SetLoadEventFiring(true); + // MOZ_KnownLive due to bug 1506441 + EventDispatcher::Dispatch( + MOZ_KnownLive(nsGlobalWindowOuter::Cast(window)), nullptr, + &event, nullptr, &unused); + doc->SetLoadEventFiring(false); + + // Now unsuppress painting on the presshell, if we + // haven't done that yet. + RefPtr<PresShell> presShell = doc->GetPresShell(); + if (presShell && !presShell->IsDestroying()) { + presShell->UnsuppressPainting(); + + if (!presShell->IsDestroying()) { + presShell->LoadComplete(); + } + } + } + } + } + NotifyDoneWithOnload(parent); + } + } + } +} + +void nsDocLoader::NotifyDoneWithOnload(nsDocLoader* aParent) { + if (aParent) { + // In-process parent: + aParent->ChildDoneWithOnload(this); + } + nsCOMPtr<nsIDocShell> docShell = do_QueryInterface(this); + if (!docShell) { + return; + } + BrowsingContext* bc = nsDocShell::Cast(docShell)->GetBrowsingContext(); + if (bc->IsContentSubframe() && !bc->GetParentWindowContext()->IsInProcess()) { + if (BrowserChild* browserChild = BrowserChild::GetFrom(docShell)) { + mozilla::Unused << browserChild->SendMaybeFireEmbedderLoadEvents( + dom::EmbedderElementEventType::NoEvent); + } + } +} + +void nsDocLoader::doStartDocumentLoad(void) { +#if defined(DEBUG) + nsAutoCString buffer; + + GetURIStringFromRequest(mDocumentRequest, buffer); + MOZ_LOG( + gDocLoaderLog, LogLevel::Debug, + ("DocLoader:%p: ++ Firing OnStateChange for start document load (...)." + "\tURI: %s \n", + this, buffer.get())); +#endif /* DEBUG */ + + // Fire an OnStatus(...) notification STATE_START. This indicates + // that the document represented by mDocumentRequest has started to + // load... + FireOnStateChange(this, mDocumentRequest, + nsIWebProgressListener::STATE_START | + nsIWebProgressListener::STATE_IS_DOCUMENT | + nsIWebProgressListener::STATE_IS_REQUEST | + nsIWebProgressListener::STATE_IS_WINDOW | + nsIWebProgressListener::STATE_IS_NETWORK, + NS_OK); +} + +void nsDocLoader::doStartURLLoad(nsIRequest* request, int32_t aExtraFlags) { +#if defined(DEBUG) + nsAutoCString buffer; + + GetURIStringFromRequest(request, buffer); + MOZ_LOG(gDocLoaderLog, LogLevel::Debug, + ("DocLoader:%p: ++ Firing OnStateChange start url load (...)." + "\tURI: %s\n", + this, buffer.get())); +#endif /* DEBUG */ + + FireOnStateChange(this, request, + nsIWebProgressListener::STATE_START | + nsIWebProgressListener::STATE_IS_REQUEST | aExtraFlags, + NS_OK); +} + +void nsDocLoader::doStopURLLoad(nsIRequest* request, nsresult aStatus) { +#if defined(DEBUG) + nsAutoCString buffer; + + GetURIStringFromRequest(request, buffer); + MOZ_LOG(gDocLoaderLog, LogLevel::Debug, + ("DocLoader:%p: ++ Firing OnStateChange for end url load (...)." + "\tURI: %s status=%" PRIx32 "\n", + this, buffer.get(), static_cast<uint32_t>(aStatus))); +#endif /* DEBUG */ + + FireOnStateChange(this, request, + nsIWebProgressListener::STATE_STOP | + nsIWebProgressListener::STATE_IS_REQUEST, + aStatus); + + // Fire a status change message for the most recent unfinished + // request to make sure that the displayed status is not outdated. + if (!mStatusInfoList.isEmpty()) { + nsStatusInfo* statusInfo = mStatusInfoList.getFirst(); + FireOnStatusChange(this, statusInfo->mRequest, statusInfo->mStatusCode, + statusInfo->mStatusMessage.get()); + } +} + +void nsDocLoader::doStopDocumentLoad(nsIRequest* request, nsresult aStatus) { +#if defined(DEBUG) + nsAutoCString buffer; + + GetURIStringFromRequest(request, buffer); + MOZ_LOG(gDocLoaderLog, LogLevel::Debug, + ("DocLoader:%p: ++ Firing OnStateChange for end document load (...)." + "\tURI: %s Status=%" PRIx32 "\n", + this, buffer.get(), static_cast<uint32_t>(aStatus))); +#endif /* DEBUG */ + + // Firing STATE_STOP|STATE_IS_DOCUMENT will fire onload handlers. + // Grab our parent chain before doing that so we can still dispatch + // STATE_STOP|STATE_IS_WINDW_STATE_IS_NETWORK to them all, even if + // the onload handlers rearrange the docshell tree. + WebProgressList list; + GatherAncestorWebProgresses(list); + + // + // Fire an OnStateChange(...) notification indicating the the + // current document has finished loading... + // + int32_t flags = nsIWebProgressListener::STATE_STOP | + nsIWebProgressListener::STATE_IS_DOCUMENT; + for (uint32_t i = 0; i < list.Length(); ++i) { + list[i]->DoFireOnStateChange(this, request, flags, aStatus); + } + + // + // Fire a final OnStateChange(...) notification indicating the the + // current document has finished loading... + // + flags = nsIWebProgressListener::STATE_STOP | + nsIWebProgressListener::STATE_IS_WINDOW | + nsIWebProgressListener::STATE_IS_NETWORK; + for (uint32_t i = 0; i < list.Length(); ++i) { + list[i]->DoFireOnStateChange(this, request, flags, aStatus); + } +} + +//////////////////////////////////////////////////////////////////////////////////// +// The following section contains support for nsIWebProgress and related stuff +//////////////////////////////////////////////////////////////////////////////////// + +NS_IMETHODIMP +nsDocLoader::AddProgressListener(nsIWebProgressListener* aListener, + uint32_t aNotifyMask) { + if (mListenerInfoList.Contains(aListener)) { + // The listener is already registered! + return NS_ERROR_FAILURE; + } + + nsWeakPtr listener = do_GetWeakReference(aListener); + if (!listener) { + return NS_ERROR_INVALID_ARG; + } + + mListenerInfoList.AppendElement(nsListenerInfo(listener, aNotifyMask)); + return NS_OK; +} + +NS_IMETHODIMP +nsDocLoader::RemoveProgressListener(nsIWebProgressListener* aListener) { + return mListenerInfoList.RemoveElement(aListener) ? NS_OK : NS_ERROR_FAILURE; +} + +NS_IMETHODIMP +nsDocLoader::GetBrowsingContextXPCOM(BrowsingContext** aResult) { + *aResult = nullptr; + return NS_OK; +} + +BrowsingContext* nsDocLoader::GetBrowsingContext() { return nullptr; } + +NS_IMETHODIMP +nsDocLoader::GetDOMWindow(mozIDOMWindowProxy** aResult) { + return CallGetInterface(this, aResult); +} + +NS_IMETHODIMP +nsDocLoader::GetIsTopLevel(bool* aResult) { + nsCOMPtr<nsIDocShell> docShell = do_QueryInterface(this); + *aResult = docShell && docShell->GetBrowsingContext()->IsTop(); + return NS_OK; +} + +NS_IMETHODIMP +nsDocLoader::GetIsLoadingDocument(bool* aIsLoadingDocument) { + *aIsLoadingDocument = mIsLoadingDocument; + + return NS_OK; +} + +NS_IMETHODIMP +nsDocLoader::GetLoadType(uint32_t* aLoadType) { + *aLoadType = 0; + + return NS_ERROR_NOT_IMPLEMENTED; +} + +NS_IMETHODIMP +nsDocLoader::GetTarget(nsIEventTarget** aTarget) { + nsCOMPtr<nsIEventTarget> target = GetMainThreadSerialEventTarget(); + target.forget(aTarget); + return NS_OK; +} + +NS_IMETHODIMP +nsDocLoader::SetTarget(nsIEventTarget* aTarget) { + return NS_ERROR_NOT_IMPLEMENTED; +} + +int64_t nsDocLoader::GetMaxTotalProgress() { + int64_t newMaxTotal = 0; + + uint32_t count = mChildList.Length(); + for (uint32_t i = 0; i < count; i++) { + int64_t individualProgress = 0; + nsIDocumentLoader* docloader = ChildAt(i); + if (docloader) { + // Cast is safe since all children are nsDocLoader too + individualProgress = ((nsDocLoader*)docloader)->GetMaxTotalProgress(); + } + if (individualProgress < int64_t(0)) // if one of the elements doesn't know + // it's size then none of them do + { + newMaxTotal = int64_t(-1); + break; + } else + newMaxTotal += individualProgress; + } + + int64_t progress = -1; + if (mMaxSelfProgress >= int64_t(0) && newMaxTotal >= int64_t(0)) + progress = newMaxTotal + mMaxSelfProgress; + + return progress; +} + +//////////////////////////////////////////////////////////////////////////////////// +// The following section contains support for nsIProgressEventSink which is used +// to pass progress and status between the actual request and the doc loader. +// The doc loader then turns around and makes the right web progress calls based +// on this information. +//////////////////////////////////////////////////////////////////////////////////// + +NS_IMETHODIMP nsDocLoader::OnProgress(nsIRequest* aRequest, int64_t aProgress, + int64_t aProgressMax) { + int64_t progressDelta = 0; + + // + // Update the RequestInfo entry with the new progress data + // + if (nsRequestInfo* info = GetRequestInfo(aRequest)) { + // Update info->mCurrentProgress before we call FireOnStateChange, + // since that can make the "info" pointer invalid. + int64_t oldCurrentProgress = info->mCurrentProgress; + progressDelta = aProgress - oldCurrentProgress; + info->mCurrentProgress = aProgress; + + // suppress sending STATE_TRANSFERRING if this is upload progress (see bug + // 240053) + if (!info->mUploading && (int64_t(0) == oldCurrentProgress) && + (int64_t(0) == info->mMaxProgress)) { + // + // If we receive an OnProgress event from a toplevel channel that the URI + // Loader has not yet targeted, then we must suppress the event. This is + // necessary to ensure that webprogresslisteners do not get confused when + // the channel is finally targeted. See bug 257308. + // + nsLoadFlags lf = 0; + aRequest->GetLoadFlags(&lf); + if ((lf & nsIChannel::LOAD_DOCUMENT_URI) && + !(lf & nsIChannel::LOAD_TARGETED)) { + MOZ_LOG( + gDocLoaderLog, LogLevel::Debug, + ("DocLoader:%p Ignoring OnProgress while load is not targeted\n", + this)); + return NS_OK; + } + + // + // This is the first progress notification for the entry. If + // (aMaxProgress != -1) then the content-length of the data is known, + // so update mMaxSelfProgress... Otherwise, set it to -1 to indicate + // that the content-length is no longer known. + // + if (aProgressMax != -1) { + mMaxSelfProgress += aProgressMax; + info->mMaxProgress = aProgressMax; + } else { + mMaxSelfProgress = int64_t(-1); + info->mMaxProgress = int64_t(-1); + } + + // Send a STATE_TRANSFERRING notification for the request. + int32_t flags; + + flags = nsIWebProgressListener::STATE_TRANSFERRING | + nsIWebProgressListener::STATE_IS_REQUEST; + // + // Move the WebProgress into the STATE_TRANSFERRING state if necessary... + // + if (mProgressStateFlags & nsIWebProgressListener::STATE_START) { + mProgressStateFlags = nsIWebProgressListener::STATE_TRANSFERRING; + + // Send STATE_TRANSFERRING for the document too... + flags |= nsIWebProgressListener::STATE_IS_DOCUMENT; + } + + FireOnStateChange(this, aRequest, flags, NS_OK); + } + + // Update our overall current progress count. + mCurrentSelfProgress += progressDelta; + } + // + // The request is not part of the load group, so ignore its progress + // information... + // + else { +#if defined(DEBUG) + nsAutoCString buffer; + + GetURIStringFromRequest(aRequest, buffer); + MOZ_LOG( + gDocLoaderLog, LogLevel::Debug, + ("DocLoader:%p OOPS - No Request Info for: %s\n", this, buffer.get())); +#endif /* DEBUG */ + + return NS_OK; + } + + // + // Fire progress notifications out to any registered nsIWebProgressListeners + // + FireOnProgressChange(this, aRequest, aProgress, aProgressMax, progressDelta, + mCurrentTotalProgress, mMaxTotalProgress); + + return NS_OK; +} + +NS_IMETHODIMP nsDocLoader::OnStatus(nsIRequest* aRequest, nsresult aStatus, + const char16_t* aStatusArg) { + // + // Fire progress notifications out to any registered nsIWebProgressListeners + // + if (aStatus != NS_OK) { + // Remember the current status for this request + nsRequestInfo* info; + info = GetRequestInfo(aRequest); + if (info) { + bool uploading = (aStatus == NS_NET_STATUS_WRITING || + aStatus == NS_NET_STATUS_SENDING_TO); + // If switching from uploading to downloading (or vice versa), then we + // need to reset our progress counts. This is designed with HTTP form + // submission in mind, where an upload is performed followed by download + // of possibly several documents. + if (info->mUploading != uploading) { + mCurrentSelfProgress = mMaxSelfProgress = 0; + mCurrentTotalProgress = mMaxTotalProgress = 0; + mCompletedTotalProgress = 0; + info->mUploading = uploading; + info->mCurrentProgress = 0; + info->mMaxProgress = 0; + } + } + + nsCOMPtr<nsIStringBundleService> sbs = + mozilla::components::StringBundle::Service(); + if (!sbs) return NS_ERROR_FAILURE; + nsAutoString msg; + nsresult rv = sbs->FormatStatusMessage(aStatus, aStatusArg, msg); + if (NS_FAILED(rv)) return rv; + + // Keep around the message. In case a request finishes, we need to make sure + // to send the status message of another request to our user to that we + // don't display, for example, "Transferring" messages for requests that are + // already done. + if (info) { + if (!info->mLastStatus) { + info->mLastStatus = MakeUnique<nsStatusInfo>(aRequest); + } else { + // We're going to move it to the front of the list, so remove + // it from wherever it is now. + info->mLastStatus->remove(); + } + info->mLastStatus->mStatusMessage = msg; + info->mLastStatus->mStatusCode = aStatus; + // Put the info at the front of the list + mStatusInfoList.insertFront(info->mLastStatus.get()); + } + FireOnStatusChange(this, aRequest, aStatus, msg.get()); + } + return NS_OK; +} + +void nsDocLoader::ClearInternalProgress() { + ClearRequestInfoHash(); + + mCurrentSelfProgress = mMaxSelfProgress = 0; + mCurrentTotalProgress = mMaxTotalProgress = 0; + mCompletedTotalProgress = 0; + + mProgressStateFlags = nsIWebProgressListener::STATE_STOP; +} + +/** + * |_code| is executed for every listener matching |_flag| + * |listener| should be used inside |_code| as the nsIWebProgressListener var. + */ +#define NOTIFY_LISTENERS(_flag, _code) \ + PR_BEGIN_MACRO \ + nsCOMPtr<nsIWebProgressListener> listener; \ + ListenerArray::BackwardIterator iter(mListenerInfoList); \ + while (iter.HasMore()) { \ + nsListenerInfo& info = iter.GetNext(); \ + if (!(info.mNotifyMask & (_flag))) { \ + continue; \ + } \ + listener = do_QueryReferent(info.mWeakListener); \ + if (!listener) { \ + iter.Remove(); \ + continue; \ + } \ + _code \ + } \ + mListenerInfoList.Compact(); \ + PR_END_MACRO + +void nsDocLoader::FireOnProgressChange(nsDocLoader* aLoadInitiator, + nsIRequest* request, int64_t aProgress, + int64_t aProgressMax, + int64_t aProgressDelta, + int64_t aTotalProgress, + int64_t aMaxTotalProgress) { + if (mIsLoadingDocument) { + mCurrentTotalProgress += aProgressDelta; + mMaxTotalProgress = GetMaxTotalProgress(); + + aTotalProgress = mCurrentTotalProgress; + aMaxTotalProgress = mMaxTotalProgress; + } + +#if defined(DEBUG) + nsAutoCString buffer; + + GetURIStringFromRequest(request, buffer); + MOZ_LOG(gDocLoaderLog, LogLevel::Debug, + ("DocLoader:%p: Progress (%s): curSelf: %" PRId64 " maxSelf: %" PRId64 + " curTotal: %" PRId64 " maxTotal %" PRId64 "\n", + this, buffer.get(), aProgress, aProgressMax, aTotalProgress, + aMaxTotalProgress)); +#endif /* DEBUG */ + + NOTIFY_LISTENERS( + nsIWebProgress::NOTIFY_PROGRESS, + // XXX truncates 64-bit to 32-bit + listener->OnProgressChange(aLoadInitiator, request, int32_t(aProgress), + int32_t(aProgressMax), int32_t(aTotalProgress), + int32_t(aMaxTotalProgress));); + + // Pass the notification up to the parent... + if (mParent) { + mParent->FireOnProgressChange(aLoadInitiator, request, aProgress, + aProgressMax, aProgressDelta, aTotalProgress, + aMaxTotalProgress); + } +} + +void nsDocLoader::GatherAncestorWebProgresses(WebProgressList& aList) { + for (nsDocLoader* loader = this; loader; loader = loader->mParent) { + aList.AppendElement(loader); + } +} + +void nsDocLoader::FireOnStateChange(nsIWebProgress* aProgress, + nsIRequest* aRequest, int32_t aStateFlags, + nsresult aStatus) { + WebProgressList list; + GatherAncestorWebProgresses(list); + for (uint32_t i = 0; i < list.Length(); ++i) { + list[i]->DoFireOnStateChange(aProgress, aRequest, aStateFlags, aStatus); + } +} + +void nsDocLoader::DoFireOnStateChange(nsIWebProgress* const aProgress, + nsIRequest* const aRequest, + int32_t& aStateFlags, + const nsresult aStatus) { + // + // Remove the STATE_IS_NETWORK bit if necessary. + // + // The rule is to remove this bit, if the notification has been passed + // up from a child WebProgress, and the current WebProgress is already + // active... + // + if (mIsLoadingDocument && + (aStateFlags & nsIWebProgressListener::STATE_IS_NETWORK) && + (this != aProgress)) { + aStateFlags &= ~nsIWebProgressListener::STATE_IS_NETWORK; + } + + // Add the STATE_RESTORING bit if necessary. + if (mIsRestoringDocument) + aStateFlags |= nsIWebProgressListener::STATE_RESTORING; + +#if defined(DEBUG) + nsAutoCString buffer; + + GetURIStringFromRequest(aRequest, buffer); + MOZ_LOG(gDocLoaderLog, LogLevel::Debug, + ("DocLoader:%p: Status (%s): code: %x\n", this, buffer.get(), + aStateFlags)); +#endif /* DEBUG */ + + NS_ASSERTION(aRequest, + "Firing OnStateChange(...) notification with a NULL request!"); + + NOTIFY_LISTENERS( + ((aStateFlags >> 16) & nsIWebProgress::NOTIFY_STATE_ALL), + listener->OnStateChange(aProgress, aRequest, aStateFlags, aStatus);); +} + +void nsDocLoader::FireOnLocationChange(nsIWebProgress* aWebProgress, + nsIRequest* aRequest, nsIURI* aUri, + uint32_t aFlags) { + NOTIFY_LISTENERS( + nsIWebProgress::NOTIFY_LOCATION, + MOZ_LOG(gDocLoaderLog, LogLevel::Debug, + ("DocLoader [%p] calling %p->OnLocationChange to %s %x", this, + listener.get(), aUri->GetSpecOrDefault().get(), aFlags)); + listener->OnLocationChange(aWebProgress, aRequest, aUri, aFlags);); + + // Pass the notification up to the parent... + if (mParent) { + mParent->FireOnLocationChange(aWebProgress, aRequest, aUri, aFlags); + } +} + +void nsDocLoader::FireOnStatusChange(nsIWebProgress* aWebProgress, + nsIRequest* aRequest, nsresult aStatus, + const char16_t* aMessage) { + NOTIFY_LISTENERS( + nsIWebProgress::NOTIFY_STATUS, + listener->OnStatusChange(aWebProgress, aRequest, aStatus, aMessage);); + + // Pass the notification up to the parent... + if (mParent) { + mParent->FireOnStatusChange(aWebProgress, aRequest, aStatus, aMessage); + } +} + +bool nsDocLoader::RefreshAttempted(nsIWebProgress* aWebProgress, nsIURI* aURI, + uint32_t aDelay, bool aSameURI) { + /* + * Returns true if the refresh may proceed, + * false if the refresh should be blocked. + */ + bool allowRefresh = true; + + NOTIFY_LISTENERS( + nsIWebProgress::NOTIFY_REFRESH, + nsCOMPtr<nsIWebProgressListener2> listener2 = + do_QueryReferent(info.mWeakListener); + if (!listener2) continue; + + bool listenerAllowedRefresh; + nsresult listenerRV = listener2->OnRefreshAttempted( + aWebProgress, aURI, aDelay, aSameURI, &listenerAllowedRefresh); + if (NS_FAILED(listenerRV)) continue; + + allowRefresh = allowRefresh && listenerAllowedRefresh;); + + // Pass the notification up to the parent... + if (mParent) { + allowRefresh = allowRefresh && mParent->RefreshAttempted(aWebProgress, aURI, + aDelay, aSameURI); + } + + return allowRefresh; +} + +nsresult nsDocLoader::AddRequestInfo(nsIRequest* aRequest) { + if (!mRequestInfoHash.Add(aRequest, mozilla::fallible)) { + return NS_ERROR_OUT_OF_MEMORY; + } + + return NS_OK; +} + +void nsDocLoader::RemoveRequestInfo(nsIRequest* aRequest) { + mRequestInfoHash.Remove(aRequest); +} + +nsDocLoader::nsRequestInfo* nsDocLoader::GetRequestInfo( + nsIRequest* aRequest) const { + return static_cast<nsRequestInfo*>(mRequestInfoHash.Search(aRequest)); +} + +void nsDocLoader::ClearRequestInfoHash(void) { mRequestInfoHash.Clear(); } + +int64_t nsDocLoader::CalculateMaxProgress() { + int64_t max = mCompletedTotalProgress; + for (auto iter = mRequestInfoHash.Iter(); !iter.Done(); iter.Next()) { + auto info = static_cast<const nsRequestInfo*>(iter.Get()); + + if (info->mMaxProgress < info->mCurrentProgress) { + return int64_t(-1); + } + max += info->mMaxProgress; + } + return max; +} + +NS_IMETHODIMP nsDocLoader::AsyncOnChannelRedirect( + nsIChannel* aOldChannel, nsIChannel* aNewChannel, uint32_t aFlags, + nsIAsyncVerifyRedirectCallback* cb) { + if (aOldChannel) { + nsLoadFlags loadFlags = 0; + int32_t stateFlags = nsIWebProgressListener::STATE_REDIRECTING | + nsIWebProgressListener::STATE_IS_REQUEST; + + aOldChannel->GetLoadFlags(&loadFlags); + // If the document channel is being redirected, then indicate that the + // document is being redirected in the notification... + if (loadFlags & nsIChannel::LOAD_DOCUMENT_URI) { + stateFlags |= nsIWebProgressListener::STATE_IS_DOCUMENT; + +#if defined(DEBUG) + // We only set mDocumentRequest in OnStartRequest(), but its possible + // to get a redirect before that for service worker interception. + if (mDocumentRequest) { + nsCOMPtr<nsIRequest> request(aOldChannel); + NS_ASSERTION(request == mDocumentRequest, "Wrong Document Channel"); + } +#endif /* DEBUG */ + } + + OnRedirectStateChange(aOldChannel, aNewChannel, aFlags, stateFlags); + FireOnStateChange(this, aOldChannel, stateFlags, NS_OK); + } + + cb->OnRedirectVerifyCallback(NS_OK); + return NS_OK; +} + +void nsDocLoader::OnSecurityChange(nsISupports* aContext, uint32_t aState) { + // + // Fire progress notifications out to any registered nsIWebProgressListeners. + // + + nsCOMPtr<nsIRequest> request = do_QueryInterface(aContext); + nsIWebProgress* webProgress = static_cast<nsIWebProgress*>(this); + + NOTIFY_LISTENERS(nsIWebProgress::NOTIFY_SECURITY, + listener->OnSecurityChange(webProgress, request, aState);); + + // Pass the notification up to the parent... + if (mParent) { + mParent->OnSecurityChange(aContext, aState); + } +} + +/* + * Implementation of nsISupportsPriority methods... + * + * The priority of the DocLoader _is_ the priority of its LoadGroup. + * + * XXX(darin): Once we start storing loadgroups in loadgroups, this code will + * go away. + */ + +NS_IMETHODIMP nsDocLoader::GetPriority(int32_t* aPriority) { + nsCOMPtr<nsISupportsPriority> p = do_QueryInterface(mLoadGroup); + if (p) return p->GetPriority(aPriority); + + *aPriority = 0; + return NS_OK; +} + +NS_IMETHODIMP nsDocLoader::SetPriority(int32_t aPriority) { + MOZ_LOG(gDocLoaderLog, LogLevel::Debug, + ("DocLoader:%p: SetPriority(%d) called\n", this, aPriority)); + + nsCOMPtr<nsISupportsPriority> p = do_QueryInterface(mLoadGroup); + if (p) p->SetPriority(aPriority); + + NS_OBSERVER_ARRAY_NOTIFY_XPCOM_OBSERVERS(mChildList, SetPriority, + (aPriority)); + + return NS_OK; +} + +NS_IMETHODIMP nsDocLoader::AdjustPriority(int32_t aDelta) { + MOZ_LOG(gDocLoaderLog, LogLevel::Debug, + ("DocLoader:%p: AdjustPriority(%d) called\n", this, aDelta)); + + nsCOMPtr<nsISupportsPriority> p = do_QueryInterface(mLoadGroup); + if (p) p->AdjustPriority(aDelta); + + NS_OBSERVER_ARRAY_NOTIFY_XPCOM_OBSERVERS(mChildList, AdjustPriority, + (aDelta)); + + return NS_OK; +} + +NS_IMETHODIMP +nsDocLoader::GetDocumentRequest(nsIRequest** aRequest) { + NS_IF_ADDREF(*aRequest = mDocumentRequest); + return NS_OK; +} + +#if 0 +void nsDocLoader::DumpChannelInfo() +{ + nsChannelInfo *info; + int32_t i, count; + int32_t current=0, max=0; + + + printf("==== DocLoader=%x\n", this); + + count = mChannelInfoList.Count(); + for(i=0; i<count; i++) { + info = (nsChannelInfo *)mChannelInfoList.ElementAt(i); + +# if defined(DEBUG) + nsAutoCString buffer; + nsresult rv = NS_OK; + if (info->mURI) { + rv = info->mURI->GetSpec(buffer); + } + + printf(" [%d] current=%d max=%d [%s]\n", i, + info->mCurrentProgress, + info->mMaxProgress, buffer.get()); +# endif /* DEBUG */ + + current += info->mCurrentProgress; + if (max >= 0) { + if (info->mMaxProgress < info->mCurrentProgress) { + max = -1; + } else { + max += info->mMaxProgress; + } + } + } + + printf("\nCurrent=%d Total=%d\n====\n", current, max); +} +#endif /* 0 */ |