/*
* Copyright (C) 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
* Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
* Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
* Copyright (C) 2008 Alp Toker <alp@atoker.com>
* Copyright (C) Research In Motion Limited 2009. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "FrameLoader.h"
#include "ApplicationCacheHost.h"
#if ENABLE(ARCHIVE) // ANDROID extension: disabled to reduce code size
#include "Archive.h"
#include "ArchiveFactory.h"
#endif
#include "BackForwardList.h"
#include "CString.h"
#include "Cache.h"
#include "CachedPage.h"
#include "Chrome.h"
#include "DOMImplementation.h"
#include "DOMWindow.h"
#include "DocLoader.h"
#include "Document.h"
#include "DocumentLoader.h"
#include "Editor.h"
#include "EditorClient.h"
#include "Element.h"
#include "Event.h"
#include "EventNames.h"
#include "FloatRect.h"
#include "FormState.h"
#include "Frame.h"
#include "FrameLoadRequest.h"
#include "FrameLoaderClient.h"
#include "FrameTree.h"
#include "FrameView.h"
#include "HTMLAnchorElement.h"
#include "HTMLAppletElement.h"
#include "HTMLFormElement.h"
#include "HTMLFrameElement.h"
#include "HTMLNames.h"
#include "HTMLObjectElement.h"
#include "HTTPParsers.h"
#include "HistoryItem.h"
#include "IconDatabase.h"
#include "IconLoader.h"
#include "InspectorController.h"
#include "Logging.h"
#include "MIMETypeRegistry.h"
#include "MainResourceLoader.h"
#include "Page.h"
#include "PageCache.h"
#include "PageGroup.h"
#include "PageTransitionEvent.h"
#include "PlaceholderDocument.h"
#include "PluginData.h"
#include "PluginDatabase.h"
#include "PluginDocument.h"
#include "ProgressTracker.h"
#include "RenderPart.h"
#include "RenderView.h"
#include "RenderWidget.h"
#include "ResourceHandle.h"
#include "ResourceRequest.h"
#include "ScriptController.h"
#include "ScriptSourceCode.h"
#include "ScriptString.h"
#include "ScriptValue.h"
#include "SecurityOrigin.h"
#include "SegmentedString.h"
#include "Settings.h"
#if ENABLE(SHARED_WORKERS)
#include "SharedWorkerRepository.h"
#endif
#include "TextResourceDecoder.h"
#include "WindowFeatures.h"
#include "XMLHttpRequest.h"
#include "XMLTokenizer.h"
#include "XSSAuditor.h"
#include <wtf/CurrentTime.h>
#include <wtf/StdLibExtras.h>
#if ENABLE(SVG)
#include "SVGDocument.h"
#include "SVGLocatable.h"
#include "SVGNames.h"
#include "SVGPreserveAspectRatio.h"
#include "SVGSVGElement.h"
#include "SVGViewElement.h"
#include "SVGViewSpec.h"
#endif
#ifdef ANDROID_INSTRUMENT
#include "TimeCounter.h"
#include "RenderArena.h"
#endif
namespace WebCore {
#if ENABLE(SVG)
using namespace SVGNames;
#endif
using namespace HTMLNames;
#if ENABLE(XHTMLMP)
static const char defaultAcceptHeader[] = "application/xml,application/vnd.wap.xhtml+xml,application/xhtml+xml;profile='http://www.wapforum.org/xhtml',text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5";
#else
static const char defaultAcceptHeader[] = "application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5";
#endif
static double storedTimeOfLastCompletedLoad;
bool isBackForwardLoadType(FrameLoadType type)
{
switch (type) {
case FrameLoadTypeStandard:
case FrameLoadTypeReload:
case FrameLoadTypeReloadFromOrigin:
case FrameLoadTypeSame:
case FrameLoadTypeRedirectWithLockedBackForwardList:
case FrameLoadTypeReplace:
return false;
case FrameLoadTypeBack:
case FrameLoadTypeBackWMLDeckNotAccessible:
case FrameLoadTypeForward:
case FrameLoadTypeIndexedBackForward:
return true;
}
ASSERT_NOT_REACHED();
return false;
}
static int numRequests(Document* document)
{
if (!document)
return 0;
return document->docLoader()->requestCount();
}
static inline bool canReferToParentFrameEncoding(const Frame* frame, const Frame* parentFrame)
{
return parentFrame && parentFrame->document()->securityOrigin()->canAccess(frame->document()->securityOrigin());
}
FrameLoader::FrameLoader(Frame* frame, FrameLoaderClient* client)
: m_frame(frame)
, m_client(client)
, m_policyChecker(frame)
, m_history(frame)
, m_notifer(frame)
, m_state(FrameStateCommittedPage)
, m_loadType(FrameLoadTypeStandard)
, m_delegateIsHandlingProvisionalLoadError(false)
, m_firstLayoutDone(false)
, m_quickRedirectComing(false)
, m_sentRedirectNotification(false)
, m_inStopAllLoaders(false)
, m_isExecutingJavaScriptFormAction(false)
, m_didCallImplicitClose(false)
, m_wasUnloadEventEmitted(false)
, m_unloadEventBeingDispatched(false)
, m_isComplete(false)
, m_isLoadingMainResource(false)
, m_needsClear(false)
, m_receivedData(false)
, m_encodingWasChosenByUser(false)
, m_containsPlugIns(false)
, m_checkTimer(this, &FrameLoader::checkTimerFired)
, m_shouldCallCheckCompleted(false)
, m_shouldCallCheckLoadComplete(false)
, m_opener(0)
, m_creatingInitialEmptyDocument(false)
, m_isDisplayingInitialEmptyDocument(false)
, m_committedFirstRealDocumentLoad(false)
, m_didPerformFirstNavigation(false)
, m_loadingFromCachedPage(false)
, m_suppressOpenerInNewFrame(false)
, m_sandboxFlags(SandboxAll)
#ifndef NDEBUG
, m_didDispatchDidCommitLoad(false)
#endif
{
}
FrameLoader::~FrameLoader()
{
setOpener(0);
HashSet<Frame*>::iterator end = m_openedFrames.end();
for (HashSet<Frame*>::iterator it = m_openedFrames.begin(); it != end; ++it)
(*it)->loader()->m_opener = 0;
m_client->frameLoaderDestroyed();
}
void FrameLoader::init()
{
// this somewhat odd set of steps is needed to give the frame an initial empty document
m_isDisplayingInitialEmptyDocument = false;
m_creatingInitialEmptyDocument = true;
setPolicyDocumentLoader(m_client->createDocumentLoader(ResourceRequest(KURL(ParsedURLString, "")), SubstituteData()).get());
setProvisionalDocumentLoader(m_policyDocumentLoader.get());
setState(FrameStateProvisional);
m_provisionalDocumentLoader->setResponse(ResourceResponse(KURL(), "text/html", 0, String(), String()));
m_provisionalDocumentLoader->finishedLoading();
begin(KURL(), false);
end();
m_frame->document()->cancelParsing();
m_creatingInitialEmptyDocument = false;
m_didCallImplicitClose = true;
// Propagate sandbox attributes to this Frameloader and its descendants.
updateSandboxFlags();
}
void FrameLoader::setDefersLoading(bool defers)
{
if (m_documentLoader)
m_documentLoader->setDefersLoading(defers);
if (m_provisionalDocumentLoader)
m_provisionalDocumentLoader->setDefersLoading(defers);
if (m_policyDocumentLoader)
m_policyDocumentLoader->setDefersLoading(defers);
if (!defers) {
m_frame->redirectScheduler()->startTimer();
startCheckCompleteTimer();
}
}
Frame* FrameLoader::createWindow(FrameLoader* frameLoaderForFrameLookup, const FrameLoadRequest& request, const WindowFeatures& features, bool& created)
{
ASSERT(!features.dialog || request.frameName().isEmpty());
if (!request.frameName().isEmpty() && request.frameName() != "_blank") {
Frame* frame = frameLoaderForFrameLookup->frame()->tree()->find(request.frameName());
if (frame && shouldAllowNavigation(frame)) {
if (!request.resourceRequest().url().isEmpty())
frame->loader()->loadFrameRequest(request, false, false, 0, 0, SendReferrer);
if (Page* page = frame->page())
#ifdef ANDROID_USER_GESTURE
page->chrome()->focus(isProcessingUserGesture());
#else
page->chrome()->focus();
#endif
created = false;
return frame;
}
}
// FIXME: Setting the referrer should be the caller's responsibility.
FrameLoadRequest requestWithReferrer = request;
requestWithReferrer.resourceRequest().setHTTPReferrer(m_outgoingReferrer);
addHTTPOriginIfNeeded(requestWithReferrer.resourceRequest(), outgoingOrigin());
Page* oldPage = m_frame->page();
if (!oldPage)
return 0;
Page* page = oldPage->chrome()->createWindow(m_frame, requestWithReferrer, features);
if (!page)
return 0;
Frame* frame = page->mainFrame();
if (request.frameName() != "_blank")
frame->tree()->setName(request.frameName());
page->chrome()->setToolbarsVisible(features.toolBarVisible || features.locationBarVisible);
page->chrome()->setStatusbarVisible(features.statusBarVisible);
page->chrome()->setScrollbarsVisible(features.scrollbarsVisible);
page->chrome()->setMenubarVisible(features.menuBarVisible);
page->chrome()->setResizable(features.resizable);
// 'x' and 'y' specify the location of the window, while 'width' and 'height'
// specify the size of the page. We can only resize the window, so
// adjust for the difference between the window size and the page size.
FloatRect windowRect = page->chrome()->windowRect();
FloatSize pageSize = page->chrome()->pageRect().size();
if (features.xSet)
windowRect.setX(features.x);
if (features.ySet)
windowRect.setY(features.y);
if (features.widthSet)
windowRect.setWidth(features.width + (windowRect.width() - pageSize.width()));
if (features.heightSet)
windowRect.setHeight(features.height + (windowRect.height() - pageSize.height()));
page->chrome()->setWindowRect(windowRect);
page->chrome()->show();
created = true;
return frame;
}
bool FrameLoader::canHandleRequest(const ResourceRequest& request)
{
return m_client->canHandleRequest(request);
}
void FrameLoader::changeLocation(const KURL& url, const String& referrer, bool lockHistory, bool lockBackForwardList, bool userGesture, bool refresh)
{
RefPtr<Frame> protect(m_frame);
ResourceRequest request(url, referrer, refresh ? ReloadIgnoringCacheData : UseProtocolCachePolicy);
#ifdef ANDROID_USER_GESTURE
request.setUserGesture(userGesture);
#endif
if (m_frame->script()->executeIfJavaScriptURL(request.url(), userGesture))
return;
urlSelected(request, "_self", 0, lockHistory, lockBackForwardList, userGesture, SendReferrer);
}
void FrameLoader::urlSelected(const ResourceRequest& request, const String& passedTarget, PassRefPtr<Event> triggeringEvent, bool lockHistory, bool lockBackForwardList, bool userGesture, ReferrerPolicy referrerPolicy)
{
ASSERT(!m_suppressOpenerInNewFrame);
if (m_frame->script()->executeIfJavaScriptURL(request.url(), userGesture, false))
return;
String target = passedTarget;
if (target.isEmpty())
target = m_frame->document()->baseTarget();
FrameLoadRequest frameRequest(request, target);
if (referrerPolicy == NoReferrer)
m_suppressOpenerInNewFrame = true;
else if (frameRequest.resourceRequest().httpReferrer().isEmpty())
frameRequest.resourceRequest().setHTTPReferrer(m_outgoingReferrer);
addHTTPOriginIfNeeded(frameRequest.resourceRequest(), outgoingOrigin());
loadFrameRequest(frameRequest, lockHistory, lockBackForwardList, triggeringEvent, 0, referrerPolicy);
m_suppressOpenerInNewFrame = false;
}
bool FrameLoader::requestFrame(HTMLFrameOwnerElement* ownerElement, const String& urlString, const AtomicString& frameName)
{
// Support for <frame src="javascript:string">
KURL scriptURL;
KURL url;
if (protocolIsJavaScript(urlString)) {
scriptURL = completeURL(urlString); // completeURL() encodes the URL.
url = blankURL();
} else
url = completeURL(urlString);
Frame* frame = ownerElement->contentFrame();
if (frame)
frame->redirectScheduler()->scheduleLocationChange(url.string(), m_outgoingReferrer, true, true, isProcessingUserGesture());
else
frame = loadSubframe(ownerElement, url, frameName, m_outgoingReferrer);
if (!frame)
return false;
if (!scriptURL.isEmpty())
frame->script()->executeIfJavaScriptURL(scriptURL);
return true;
}
Frame* FrameLoader::loadSubframe(HTMLFrameOwnerElement* ownerElement, const KURL& url, const String& name, const String& referrer)
{
bool allowsScrolling = true;
int marginWidth = -1;
int marginHeight = -1;
if (ownerElement->hasTagName(frameTag) || ownerElement->hasTagName(iframeTag)) {
HTMLFrameElementBase* o = static_cast<HTMLFrameElementBase*>(ownerElement);
allowsScrolling = o->scrollingMode() != ScrollbarAlwaysOff;
marginWidth = o->getMarginWidth();
marginHeight = o->getMarginHeight();
}
if (!SecurityOrigin::canLoad(url, referrer, 0)) {
FrameLoader::reportLocalLoadFailed(m_frame, url.string());
return 0;
}
bool hideReferrer = SecurityOrigin::shouldHideReferrer(url, referrer);
RefPtr<Frame> frame = m_client->createFrame(url, name, ownerElement, hideReferrer ? String() : referrer, allowsScrolling, marginWidth, marginHeight);
if (!frame) {
checkCallImplicitClose();
return 0;
}
// All new frames will have m_isComplete set to true at this point due to synchronously loading
// an empty document in FrameLoader::init(). But many frames will now be starting an
// asynchronous load of url, so we set m_isComplete to false and then check if the load is
// actually completed below. (Note that we set m_isComplete to false even for synchronous
// loads, so that checkCompleted() below won't bail early.)
// FIXME: Can we remove this entirely? m_isComplete normally gets set to false when a load is committed.
frame->loader()->m_isComplete = false;
RenderObject* renderer = ownerElement->renderer();
FrameView* view = frame->view();
if (renderer && renderer->isWidget() && view)
toRenderWidget(renderer)->setWidget(view);
checkCallImplicitClose();
// Some loads are performed synchronously (e.g., about:blank and loads
// cancelled by returning a null ResourceRequest from requestFromDelegate).
// In these cases, the synchronous load would have finished
// before we could connect the signals, so make sure to send the
// completed() signal for the child by hand and mark the load as being
// complete.
// FIXME: In this case the Frame will have finished loading before
// it's being added to the child list. It would be a good idea to
// create the child first, then invoke the loader separately.
if (frame->loader()->state() == FrameStateComplete)
frame->loader()->checkCompleted();
return frame.get();
}
void FrameLoader::submitForm(const char* action, const String& url, PassRefPtr<FormData> formData,
const String& target, const String& contentType, const String& boundary,
bool lockHistory, PassRefPtr<Event> event, PassRefPtr<FormState> formState)
{
ASSERT(action);
ASSERT(strcmp(action, "GET") == 0 || strcmp(action, "POST") == 0);
ASSERT(formData);
ASSERT(formState);
ASSERT(formState->sourceFrame() == m_frame);
if (!m_frame->page())
return;
KURL u = completeURL(url.isNull() ? "" : url);
if (u.isEmpty())
return;
if (isDocumentSandboxed(SandboxForms))
return;
if (protocolIsJavaScript(u)) {
m_isExecutingJavaScriptFormAction = true;
m_frame->script()->executeIfJavaScriptURL(u, false, false);
m_isExecutingJavaScriptFormAction = false;
return;
}
FrameLoadRequest frameRequest;
#ifdef ANDROID_USER_GESTURE
frameRequest.resourceRequest().setUserGesture(isProcessingUserGesture());
#endif
String targetOrBaseTarget = target.isEmpty() ? m_frame->document()->baseTarget() : target;
Frame* targetFrame = findFrameForNavigation(targetOrBaseTarget);
if (!targetFrame) {
targetFrame = m_frame;
frameRequest.setFrameName(targetOrBaseTarget);
}
if (!targetFrame->page())
return;
// FIXME: We'd like to remove this altogether and fix the multiple form submission issue another way.
// We do not want to submit more than one form from the same page, nor do we want to submit a single
// form more than once. This flag prevents these from happening; not sure how other browsers prevent this.
// The flag is reset in each time we start handle a new mouse or key down event, and
// also in setView since this part may get reused for a page from the back/forward cache.
// The form multi-submit logic here is only needed when we are submitting a form that affects this frame.
// FIXME: Frame targeting is only one of the ways the submission could end up doing something other
// than replacing this frame's content, so this check is flawed. On the other hand, the check is hardly
// needed any more now that we reset m_submittedFormURL on each mouse or key down event.
if (m_frame->tree()->isDescendantOf(targetFrame)) {
if (m_submittedFormURL == u)
return;
m_submittedFormURL = u;
}
formData->generateFiles(m_frame->page()->chrome()->client());
if (!m_outgoingReferrer.isEmpty())
frameRequest.resourceRequest().setHTTPReferrer(m_outgoingReferrer);
if (strcmp(action, "GET") == 0)
u.setQuery(formData->flattenToString());
else {
frameRequest.resourceRequest().setHTTPMethod("POST");
frameRequest.resourceRequest().setHTTPBody(formData);
// construct some user headers if necessary
if (contentType.isNull() || contentType == "application/x-www-form-urlencoded")
frameRequest.resourceRequest().setHTTPContentType(contentType);
else // contentType must be "multipart/form-data"
frameRequest.resourceRequest().setHTTPContentType(contentType + "; boundary=" + boundary);
}
frameRequest.resourceRequest().setURL(u);
addHTTPOriginIfNeeded(frameRequest.resourceRequest(), outgoingOrigin());
targetFrame->redirectScheduler()->scheduleFormSubmission(frameRequest, lockHistory, event, formState);
}
void FrameLoader::stopLoading(UnloadEventPolicy unloadEventPolicy, DatabasePolicy databasePolicy)
{
if (m_frame->document() && m_frame->document()->tokenizer())
m_frame->document()->tokenizer()->stopParsing();
if (unloadEventPolicy != UnloadEventPolicyNone) {
if (m_frame->document()) {
if (m_didCallImplicitClose && !m_wasUnloadEventEmitted) {
Node* currentFocusedNode = m_frame->document()->focusedNode();
if (currentFocusedNode)
currentFocusedNode->aboutToUnload();
m_unloadEventBeingDispatched = true;
if (m_frame->domWindow()) {
if (unloadEventPolicy == UnloadEventPolicyUnloadAndPageHide)
m_frame->domWindow()->dispatchEvent(PageTransitionEvent::create(eventNames().pagehideEvent, m_frame->document()->inPageCache()), m_frame->document());
if (!m_frame->document()->inPageCache())
m_frame->domWindow()->dispatchEvent(Event::create(eventNames().unloadEvent, false, false), m_frame->domWindow()->document());
}
m_unloadEventBeingDispatched = false;
if (m_frame->document())
m_frame->document()->updateStyleIfNeeded();
m_wasUnloadEventEmitted = true;
}
}
// Dispatching the unload event could have made m_frame->document() null.
if (m_frame->document() && !m_frame->document()->inPageCache()) {
// Don't remove event listeners from a transitional empty document (see bug 28716 for more information).
bool keepEventListeners = m_isDisplayingInitialEmptyDocument && m_provisionalDocumentLoader
&& m_frame->document()->securityOrigin()->isSecureTransitionTo(m_provisionalDocumentLoader->url());
if (!keepEventListeners)
m_frame->document()->removeAllEventListeners();
}
}
m_isComplete = true; // to avoid calling completed() in finishedParsing()
m_isLoadingMainResource = false;
m_didCallImplicitClose = true; // don't want that one either
if (m_frame->document() && m_frame->document()->parsing()) {
finishedParsing();
m_frame->document()->setParsing(false);
}
m_workingURL = KURL();
if (Document* doc = m_frame->document()) {
if (DocLoader* docLoader = doc->docLoader())
cache()->loader()->cancelRequests(docLoader);
#if ENABLE(DATABASE)
if (databasePolicy == DatabasePolicyStop)
doc->stopDatabases(0);
#else
UNUSED_PARAM(databasePolicy);
#endif
}
// tell all subframes to stop as well
for (Frame* child = m_frame->tree()->firstChild(); child; child = child->tree()->nextSibling())
child->loader()->stopLoading(unloadEventPolicy);
m_frame->redirectScheduler()->cancel();
}
void FrameLoader::stop()
{
// http://bugs.webkit.org/show_bug.cgi?id=10854
// The frame's last ref may be removed and it will be deleted by checkCompleted().
RefPtr<Frame> protector(m_frame);
if (m_frame->document()->tokenizer())
m_frame->document()->tokenizer()->stopParsing();
m_frame->document()->finishParsing();
if (m_iconLoader)
m_iconLoader->stopLoading();
}
bool FrameLoader::closeURL()
{
history()->saveDocumentState();
// Should only send the pagehide event here if the current document exists and has not been placed in the page cache.
Document* currentDocument = m_frame->document();
stopLoading(currentDocument && !currentDocument->inPageCache() ? UnloadEventPolicyUnloadAndPageHide : UnloadEventPolicyUnloadOnly);
m_frame->editor()->clearUndoRedoOperations();
return true;
}
KURL FrameLoader::iconURL()
{
// If this isn't a top level frame, return nothing
if (m_frame->tree() && m_frame->tree()->parent())
return KURL();
// If we have an iconURL from a Link element, return that
if (!m_frame->document()->iconURL().isEmpty())
return KURL(ParsedURLString, m_frame->document()->iconURL());
// Don't return a favicon iconURL unless we're http or https
if (!m_URL.protocolInHTTPFamily())
return KURL();
KURL url;
bool couldSetProtocol = url.setProtocol(m_URL.protocol());
ASSERT_UNUSED(couldSetProtocol, couldSetProtocol);
url.setHost(m_URL.host());
if (m_URL.hasPort())
url.setPort(m_URL.port());
url.setPath("/favicon.ico");
return url;
}
bool FrameLoader::didOpenURL(const KURL& url)
{
if (m_frame->redirectScheduler()->redirectScheduledDuringLoad()) {
// A redirect was scheduled before the document was created.
// This can happen when one frame changes another frame's location.
return false;
}
m_frame->redirectScheduler()->cancel();
m_frame->editor()->clearLastEditCommand();
m_isComplete = false;
m_isLoadingMainResource = true;
m_didCallImplicitClose = false;
// If we are still in the process of initializing an empty document then
// its frame is not in a consistent state for rendering, so avoid setJSStatusBarText
// since it may cause clients to attempt to render the frame.
if (!m_creatingInitialEmptyDocument) {
m_frame->setJSStatusBarText(String());
m_frame->setJSDefaultStatusBarText(String());
}
m_URL = url;
if (m_URL.protocolInHTTPFamily() && !m_URL.host().isEmpty() && m_URL.path().isEmpty())
m_URL.setPath("/");
m_workingURL = m_URL;
started();
return true;
}
void FrameLoader::didExplicitOpen()
{
m_isComplete = false;
m_didCallImplicitClose = false;
// Calling document.open counts as committing the first real document load.
m_committedFirstRealDocumentLoad = true;
// Prevent window.open(url) -- eg window.open("about:blank") -- from blowing away results
// from a subsequent window.document.open / window.document.write call.
// Canceling redirection here works for all cases because document.open
// implicitly precedes document.write.
m_frame->redirectScheduler()->cancel();
if (m_frame->document()->url() != blankURL())
m_URL = m_frame->document()->url();
}
void FrameLoader::cancelAndClear()
{
m_frame->redirectScheduler()->cancel();
if (!m_isComplete)
closeURL();
clear(false);
m_frame->script()->updatePlatformScriptObjects();
}
void FrameLoader::replaceDocument(const String& html)
{
stopAllLoaders();
begin(m_URL, true, m_frame->document()->securityOrigin());
write(html);
end();
}
void FrameLoader::clear(bool clearWindowProperties, bool clearScriptObjects, bool clearFrameView)
{
m_frame->editor()->clear();
if (!m_needsClear)
return;
m_needsClear = false;
if (!m_frame->document()->inPageCache()) {
m_frame->document()->cancelParsing();
m_frame->document()->stopActiveDOMObjects();
if (m_frame->document()->attached()) {
m_frame->document()->willRemove();
m_frame->document()->detach();
m_frame->document()->removeFocusedNodeOfSubtree(m_frame->document());
}
}
// Do this after detaching the document so that the unload event works.
if (clearWindowProperties) {
m_frame->clearDOMWindow();
m_frame->script()->clearWindowShell();
}
m_frame->selection()->clear();
m_frame->eventHandler()->clear();
if (clearFrameView && m_frame->view())
m_frame->view()->clear();
m_frame->setSelectionGranularity(CharacterGranularity);
// Do not drop the document before the ScriptController and view are cleared
// as some destructors might still try to access the document.
m_frame->setDocument(0);
m_decoder = 0;
m_containsPlugIns = false;
if (clearScriptObjects)
m_frame->script()->clearScriptObjects();
m_frame->redirectScheduler()->clear();
m_checkTimer.stop();
m_shouldCallCheckCompleted = false;
m_shouldCallCheckLoadComplete = false;
m_receivedData = false;
m_isDisplayingInitialEmptyDocument = false;
if (!m_encodingWasChosenByUser)
m_encoding = String();
}
void FrameLoader::receivedFirstData()
{
begin(m_workingURL, false);
dispatchDidCommitLoad();
dispatchDidClearWindowObjectsInAllWorlds();
if (m_documentLoader) {
String ptitle = m_documentLoader->title();
// If we have a title let the WebView know about it.
if (!ptitle.isNull())
m_client->dispatchDidReceiveTitle(ptitle);
}
m_workingURL = KURL();
double delay;
String url;
if (!m_documentLoader)
return;
if (m_frame->inViewSourceMode())
return;
if (!parseHTTPRefresh(m_documentLoader->response().httpHeaderField("Refresh"), false, delay, url))
return;
if (url.isEmpty())
url = m_URL.string();
else
url = m_frame->document()->completeURL(url).string();
m_frame->redirectScheduler()->scheduleRedirect(delay, url);
}
const String& FrameLoader::responseMIMEType() const
{
return m_responseMIMEType;
}
void FrameLoader::setResponseMIMEType(const String& type)
{
m_responseMIMEType = type;
}
void FrameLoader::begin()
{
begin(KURL());
}
void FrameLoader::begin(const KURL& url, bool dispatch, SecurityOrigin* origin)
{
// We need to take a reference to the security origin because |clear|
// might destroy the document that owns it.
RefPtr<SecurityOrigin> forcedSecurityOrigin = origin;
RefPtr<Document> document;
// Create a new document before clearing the frame, because it may need to inherit an aliased security context.
if (!m_isDisplayingInitialEmptyDocument && m_client->shouldUsePluginDocument(m_responseMIMEType))
document = PluginDocument::create(m_frame);
else if (!m_client->hasHTMLView())
document = PlaceholderDocument::create(m_frame);
else
document = DOMImplementation::createDocument(m_responseMIMEType, m_frame, m_frame->inViewSourceMode());
bool resetScripting = !(m_isDisplayingInitialEmptyDocument && m_frame->document()->securityOrigin()->isSecureTransitionTo(url));
clear(resetScripting, resetScripting);
if (resetScripting)
m_frame->script()->updatePlatformScriptObjects();
m_needsClear = true;
m_isComplete = false;
m_didCallImplicitClose = false;
m_isLoadingMainResource = true;
m_isDisplayingInitialEmptyDocument = m_creatingInitialEmptyDocument;
KURL ref(url);
ref.setUser(String());
ref.setPass(String());
ref.removeFragmentIdentifier();
m_outgoingReferrer = ref.string();
m_URL = url;
document->setURL(m_URL);
m_frame->setDocument(document);
if (m_pendingStateObject) {
document->statePopped(m_pendingStateObject.get());
m_pendingStateObject.clear();
}
if (m_decoder)
document->setDecoder(m_decoder.get());
if (forcedSecurityOrigin)
document->setSecurityOrigin(forcedSecurityOrigin.get());
m_frame->domWindow()->setURL(document->url());
m_frame->domWindow()->setSecurityOrigin(document->securityOrigin());
if (dispatch)
dispatchDidClearWindowObjectsInAllWorlds();
updateFirstPartyForCookies();
Settings* settings = document->settings();
document->docLoader()->setAutoLoadImages(settings && settings->loadsImagesAutomatically());
#ifdef ANDROID_BLOCK_NETWORK_IMAGE
document->docLoader()->setBlockNetworkImage(settings && settings->blockNetworkImage());
#endif
if (m_documentLoader) {
String dnsPrefetchControl = m_documentLoader->response().httpHeaderField("X-DNS-Prefetch-Control");
if (!dnsPrefetchControl.isEmpty())
document->parseDNSPrefetchControlHeader(dnsPrefetchControl);
}
history()->restoreDocumentState();
document->implicitOpen();
if (m_frame->view() && m_client->hasHTMLView())
m_frame->view()->setContentsSize(IntSize());
}
void FrameLoader::write(const char* str, int len, bool flush)
{
if (len == 0 && !flush)
return;
if (len == -1)
len = strlen(str);
Tokenizer* tokenizer = m_frame->document()->tokenizer();
if (tokenizer && tokenizer->wantsRawData()) {
if (len > 0)
tokenizer->writeRawData(str, len);
return;
}
if (!m_decoder) {
if (Settings* settings = m_frame->settings()) {
m_decoder = TextResourceDecoder::create(m_responseMIMEType,
settings->defaultTextEncodingName(),
settings->usesEncodingDetector());
Frame* parentFrame = m_frame->tree()->parent();
// Set the hint encoding to the parent frame encoding only if
// the parent and the current frames share the security origin.
// We impose this condition because somebody can make a child frame
// containing a carefully crafted html/javascript in one encoding
// that can be mistaken for hintEncoding (or related encoding) by
// an auto detector. When interpreted in the latter, it could be
// an attack vector.
// FIXME: This might be too cautious for non-7bit-encodings and
// we may consider relaxing this later after testing.
if (canReferToParentFrameEncoding(m_frame, parentFrame))
m_decoder->setHintEncoding(parentFrame->document()->decoder());
} else
m_decoder = TextResourceDecoder::create(m_responseMIMEType, String());
Frame* parentFrame = m_frame->tree()->parent();
if (m_encoding.isEmpty()) {
if (canReferToParentFrameEncoding(m_frame, parentFrame))
m_decoder->setEncoding(parentFrame->document()->inputEncoding(), TextResourceDecoder::EncodingFromParentFrame);
} else {
m_decoder->setEncoding(m_encoding,
m_encodingWasChosenByUser ? TextResourceDecoder::UserChosenEncoding : TextResourceDecoder::EncodingFromHTTPHeader);
}
m_frame->document()->setDecoder(m_decoder.get());
}
String decoded = m_decoder->decode(str, len);
if (flush)
decoded += m_decoder->flush();
if (decoded.isEmpty())
return;
if (!m_receivedData) {
m_receivedData = true;
if (m_decoder->encoding().usesVisualOrdering())
m_frame->document()->setVisuallyOrdered();
m_frame->document()->recalcStyle(Node::Force);
}
if (tokenizer) {
ASSERT(!tokenizer->wantsRawData());
tokenizer->write(decoded, true);
}
}
void FrameLoader::write(const String& str)
{
if (str.isNull())
return;
if (!m_receivedData) {
m_receivedData = true;
m_frame->document()->setParseMode(Document::Strict);
}
if (Tokenizer* tokenizer = m_frame->document()->tokenizer())
tokenizer->write(str, true);
}
void FrameLoader::end()
{
m_isLoadingMainResource = false;
endIfNotLoadingMainResource();
}
void FrameLoader::endIfNotLoadingMainResource()
{
if (m_isLoadingMainResource || !m_frame->page() || !m_frame->document())
return;
// http://bugs.webkit.org/show_bug.cgi?id=10854
// The frame's last ref may be removed and it can be deleted by checkCompleted(),
// so we'll add a protective refcount
RefPtr<Frame> protector(m_frame);
// make sure nothing's left in there
write(0, 0, true);
m_frame->document()->finishParsing();
}
void FrameLoader::iconLoadDecisionAvailable()
{
if (!m_mayLoadIconLater)
return;
LOG(IconDatabase, "FrameLoader %p was told a load decision is available for its icon", this);
startIconLoader();
m_mayLoadIconLater = false;
}
void FrameLoader::startIconLoader()
{
// FIXME: We kick off the icon loader when the frame is done receiving its main resource.
// But we should instead do it when we're done parsing the head element.
if (!isLoadingMainFrame())
return;
if (!iconDatabase() || !iconDatabase()->isEnabled())
return;
KURL url(iconURL());
String urlString(url.string());
if (urlString.isEmpty())
return;
// If we're not reloading and the icon database doesn't say to load now then bail before we actually start the load
if (loadType() != FrameLoadTypeReload && loadType() != FrameLoadTypeReloadFromOrigin) {
IconLoadDecision decision = iconDatabase()->loadDecisionForIconURL(urlString, m_documentLoader.get());
if (decision == IconLoadNo) {
LOG(IconDatabase, "FrameLoader::startIconLoader() - Told not to load this icon, committing iconURL %s to database for pageURL mapping", urlString.ascii().data());
commitIconURLToIconDatabase(url);
// We were told not to load this icon - that means this icon is already known by the database
// If the icon data hasn't been read in from disk yet, kick off the read of the icon from the database to make sure someone
// has done it. This is after registering for the notification so the WebView can call the appropriate delegate method.
// Otherwise if the icon data *is* available, notify the delegate
if (!iconDatabase()->iconDataKnownForIconURL(urlString)) {
LOG(IconDatabase, "Told not to load icon %s but icon data is not yet available - registering for notification and requesting load from disk", urlString.ascii().data());
m_client->registerForIconNotification();
iconDatabase()->iconForPageURL(m_URL.string(), IntSize(0, 0));
iconDatabase()->iconForPageURL(originalRequestURL().string(), IntSize(0, 0));
} else
m_client->dispatchDidReceiveIcon();
return;
}
if (decision == IconLoadUnknown) {
// In this case, we may end up loading the icon later, but we still want to commit the icon url mapping to the database
// just in case we don't end up loading later - if we commit the mapping a second time after the load, that's no big deal
// We also tell the client to register for the notification that the icon is received now so it isn't missed in case the
// icon is later read in from disk
LOG(IconDatabase, "FrameLoader %p might load icon %s later", this, urlString.ascii().data());
m_mayLoadIconLater = true;
m_client->registerForIconNotification();
commitIconURLToIconDatabase(url);
return;
}
}
// People who want to avoid loading images generally want to avoid loading all images.
// Now that we've accounted for URL mapping, avoid starting the network load if images aren't set to display automatically.
Settings* settings = m_frame->settings();
if (settings && !settings->loadsImagesAutomatically())
return;
// This is either a reload or the icon database said "yes, load the icon", so kick off the load!
if (!m_iconLoader)
m_iconLoader.set(IconLoader::create(m_frame).release());
m_iconLoader->startLoading();
}
void FrameLoader::commitIconURLToIconDatabase(const KURL& icon)
{
ASSERT(iconDatabase());
LOG(IconDatabase, "Committing iconURL %s to database for pageURLs %s and %s", icon.string().ascii().data(), m_URL.string().ascii().data(), originalRequestURL().string().ascii().data());
iconDatabase()->setIconURLForPageURL(icon.string(), m_URL.string());
iconDatabase()->setIconURLForPageURL(icon.string(), originalRequestURL().string());
}
void FrameLoader::finishedParsing()
{
if (m_creatingInitialEmptyDocument)
return;
m_frame->injectUserScripts(InjectAtDocumentEnd);
// This can be called from the Frame's destructor, in which case we shouldn't protect ourselves
// because doing so will cause us to re-enter the destructor when protector goes out of scope.
// Null-checking the FrameView indicates whether or not we're in the destructor.
RefPtr<Frame> protector = m_frame->view() ? m_frame : 0;
m_client->dispatchDidFinishDocumentLoad();
checkCompleted();
if (!m_frame->view())
return; // We are being destroyed by something checkCompleted called.
// Check if the scrollbars are really needed for the content.
// If not, remove them, relayout, and repaint.
m_frame->view()->restoreScrollbar();
m_frame->view()->scrollToFragment(m_URL);
}
void FrameLoader::loadDone()
{
checkCompleted();
}
bool FrameLoader::allChildrenAreComplete() const
{
for (Frame* child = m_frame->tree()->firstChild(); child; child = child->tree()->nextSibling()) {
if (!child->loader()->m_isComplete)
return false;
}
return true;
}
bool FrameLoader::allAncestorsAreComplete() const
{
for (Frame* ancestor = m_frame; ancestor; ancestor = ancestor->tree()->parent()) {
if (!ancestor->loader()->m_isComplete)
return false;
}
return true;
}
void FrameLoader::checkCompleted()
{
m_shouldCallCheckCompleted = false;
if (m_frame->view())
m_frame->view()->checkStopDelayingDeferredRepaints();
// Any frame that hasn't completed yet?
if (!allChildrenAreComplete())
return;
// Have we completed before?
if (m_isComplete)
return;
// Are we still parsing?
if (m_frame->document()->parsing())
return;
// Still waiting for images/scripts?
if (numRequests(m_frame->document()))
return;
// OK, completed.
m_isComplete = true;
RefPtr<Frame> protect(m_frame);
checkCallImplicitClose(); // if we didn't do it before
m_frame->redirectScheduler()->startTimer();
completed();
if (m_frame->page())
checkLoadComplete();
}
void FrameLoader::checkTimerFired(Timer<FrameLoader>*)
{
if (Page* page = m_frame->page()) {
if (page->defersLoading())
return;
}
if (m_shouldCallCheckCompleted)
checkCompleted();
if (m_shouldCallCheckLoadComplete)
checkLoadComplete();
}
void FrameLoader::startCheckCompleteTimer()
{
if (!(m_shouldCallCheckCompleted || m_shouldCallCheckLoadComplete))
return;
if (m_checkTimer.isActive())
return;
m_checkTimer.startOneShot(0);
}
void FrameLoader::scheduleCheckCompleted()
{
m_shouldCallCheckCompleted = true;
startCheckCompleteTimer();
}
void FrameLoader::scheduleCheckLoadComplete()
{
m_shouldCallCheckLoadComplete = true;
startCheckCompleteTimer();
}
void FrameLoader::checkCallImplicitClose()
{
if (m_didCallImplicitClose || m_frame->document()->parsing())
return;
if (!allChildrenAreComplete())
return; // still got a frame running -> too early
m_didCallImplicitClose = true;
m_wasUnloadEventEmitted = false;
m_frame->document()->implicitClose();
}
KURL FrameLoader::baseURL() const
{
ASSERT(m_frame->document());
return m_frame->document()->baseURL();
}
KURL FrameLoader::completeURL(const String& url)
{
ASSERT(m_frame->document());
return m_frame->document()->completeURL(url);
}
void FrameLoader::loadURLIntoChildFrame(const KURL& url, const String& referer, Frame* childFrame)
{
ASSERT(childFrame);
HistoryItem* parentItem = history()->currentItem();
FrameLoadType loadType = this->loadType();
FrameLoadType childLoadType = FrameLoadTypeRedirectWithLockedBackForwardList;
KURL workingURL = url;
// If we're moving in the back/forward list, we might want to replace the content
// of this child frame with whatever was there at that point.
if (parentItem && parentItem->children().size() && isBackForwardLoadType(loadType)) {
HistoryItem* childItem = parentItem->childItemWithTarget(childFrame->tree()->name());
if (childItem) {
// Use the original URL to ensure we get all the side-effects, such as
// onLoad handlers, of any redirects that happened. An example of where
// this is needed is Radar 3213556.
workingURL = KURL(ParsedURLString, childItem->originalURLString());
childLoadType = loadType;
childFrame->loader()->history()->setProvisionalItem(childItem);
}
}
#if ENABLE(ARCHIVE) // ANDROID extension: disabled to reduce code size
RefPtr<Archive> subframeArchive = activeDocumentLoader()->popArchiveForSubframe(childFrame->tree()->name());
if (subframeArchive)
childFrame->loader()->loadArchive(subframeArchive.release());
else
#endif
#ifdef ANDROID_USER_GESTURE
childFrame->loader()->loadURL(workingURL, referer, String(), false, childLoadType, 0, 0, false);
#else
childFrame->loader()->loadURL(workingURL, referer, String(), false, childLoadType, 0, 0);
#endif
}
#if ENABLE(ARCHIVE) // ANDROID extension: disabled to reduce code size
void FrameLoader::loadArchive(PassRefPtr<Archive> prpArchive)
{
RefPtr<Archive> archive = prpArchive;
ArchiveResource* mainResource = archive->mainResource();
ASSERT(mainResource);
if (!mainResource)
return;
SubstituteData substituteData(mainResource->data(), mainResource->mimeType(), mainResource->textEncoding(), KURL());
ResourceRequest request(mainResource->url());
#if PLATFORM(MAC)
request.applyWebArchiveHackForMail();
#endif
RefPtr<DocumentLoader> documentLoader = m_client->createDocumentLoader(request, substituteData);
documentLoader->addAllArchiveResources(archive.get());
load(documentLoader.get());
}
#endif
String FrameLoader::encoding() const
{
if (m_encodingWasChosenByUser && !m_encoding.isEmpty())
return m_encoding;
if (m_decoder && m_decoder->encoding().isValid())
return m_decoder->encoding().name();
Settings* settings = m_frame->settings();
return settings ? settings->defaultTextEncodingName() : String();
}
bool FrameLoader::requestObject(RenderPart* renderer, const String& url, const AtomicString& frameName,
const String& mimeType, const Vector<String>& paramNames, const Vector<String>& paramValues)
{
if (url.isEmpty() && mimeType.isEmpty())
return false;
if (!m_frame->script()->xssAuditor()->canLoadObject(url)) {
// It is unsafe to honor the request for this object.
return false;
}
KURL completedURL;
if (!url.isEmpty())
completedURL = completeURL(url);
bool useFallback;
if (shouldUsePlugin(completedURL, mimeType, renderer->hasFallbackContent(), useFallback)) {
Settings* settings = m_frame->settings();
if (!m_client->allowPlugins(settings && settings->arePluginsEnabled())
|| (!settings->isJavaEnabled() && MIMETypeRegistry::isJavaAppletMIMEType(mimeType)))
return false;
if (isDocumentSandboxed(SandboxPlugins))
return false;
return loadPlugin(renderer, completedURL, mimeType, paramNames, paramValues, useFallback);
}
ASSERT(renderer->node()->hasTagName(objectTag) || renderer->node()->hasTagName(embedTag));
HTMLPlugInElement* element = static_cast<HTMLPlugInElement*>(renderer->node());
// If the plug-in element already contains a subframe, requestFrame will re-use it. Otherwise,
// it will create a new frame and set it as the RenderPart's widget, causing what was previously
// in the widget to be torn down.
return requestFrame(element, completedURL, frameName);
}
bool FrameLoader::shouldUsePlugin(const KURL& url, const String& mimeType, bool hasFallback, bool& useFallback)
{
if (m_client->shouldUsePluginDocument(mimeType)) {
useFallback = false;
return true;
}
// Allow other plug-ins to win over QuickTime because if the user has installed a plug-in that
// can handle TIFF (which QuickTime can also handle) they probably intended to override QT.
if (m_frame->page() && (mimeType == "image/tiff" || mimeType == "image/tif" || mimeType == "image/x-tiff")) {
const PluginData* pluginData = m_frame->page()->pluginData();
String pluginName = pluginData ? pluginData->pluginNameForMimeType(mimeType) : String();
if (!pluginName.isEmpty() && !pluginName.contains("QuickTime", false))
return true;
}
ObjectContentType objectType = m_client->objectContentType(url, mimeType);
// If an object's content can't be handled and it has no fallback, let
// it be handled as a plugin to show the broken plugin icon.
useFallback = objectType == ObjectContentNone && hasFallback;
return objectType == ObjectContentNone || objectType == ObjectContentNetscapePlugin || objectType == ObjectContentOtherPlugin;
}
ObjectContentType FrameLoader::defaultObjectContentType(const KURL& url, const String& mimeTypeIn)
{
String mimeType = mimeTypeIn;
// We don't use MIMETypeRegistry::getMIMETypeForPath() because it returns "application/octet-stream" upon failure
if (mimeType.isEmpty())
mimeType = MIMETypeRegistry::getMIMETypeForExtension(url.path().substring(url.path().reverseFind('.') + 1));
if (mimeType.isEmpty())
return ObjectContentFrame; // Go ahead and hope that we can display the content.
if (MIMETypeRegistry::isSupportedImageMIMEType(mimeType))
return WebCore::ObjectContentImage;
#if !PLATFORM(MAC) && !PLATFORM(CHROMIUM) // Mac has no PluginDatabase, nor does Chromium
if (PluginDatabase::installedPlugins()->isMIMETypeRegistered(mimeType))
return WebCore::ObjectContentNetscapePlugin;
#endif
if (MIMETypeRegistry::isSupportedNonImageMIMEType(mimeType))
return WebCore::ObjectContentFrame;
return WebCore::ObjectContentNone;
}
static HTMLPlugInElement* toPlugInElement(Node* node)
{
if (!node)
return 0;
#if ENABLE(PLUGIN_PROXY_FOR_VIDEO)
ASSERT(node->hasTagName(objectTag) || node->hasTagName(embedTag)
|| node->hasTagName(videoTag) || node->hasTagName(audioTag)
|| node->hasTagName(appletTag));
#else
ASSERT(node->hasTagName(objectTag) || node->hasTagName(embedTag)
|| node->hasTagName(appletTag));
#endif
return static_cast<HTMLPlugInElement*>(node);
}
bool FrameLoader::loadPlugin(RenderPart* renderer, const KURL& url, const String& mimeType,
const Vector<String>& paramNames, const Vector<String>& paramValues, bool useFallback)
{
RefPtr<Widget> widget;
if (renderer && !useFallback) {
HTMLPlugInElement* element = toPlugInElement(renderer->node());
if (!SecurityOrigin::canLoad(url, String(), frame()->document())) {
FrameLoader::reportLocalLoadFailed(m_frame, url.string());
return false;
}
checkIfRunInsecureContent(m_frame->document()->securityOrigin(), url);
widget = m_client->createPlugin(IntSize(renderer->contentWidth(), renderer->contentHeight()),
element, url, paramNames, paramValues, mimeType,
m_frame->document()->isPluginDocument() && !m_containsPlugIns);
if (widget) {
renderer->setWidget(widget);
m_containsPlugIns = true;
}
}
return widget != 0;
}
String FrameLoader::outgoingReferrer() const
{
return m_outgoingReferrer;
}
String FrameLoader::outgoingOrigin() const
{
return m_frame->document()->securityOrigin()->toString();
}
bool FrameLoader::isMixedContent(SecurityOrigin* context, const KURL& url)
{
if (context->protocol() != "https")
return false; // We only care about HTTPS security origins.
if (!url.isValid() || url.protocolIs("https") || url.protocolIs("about") || url.protocolIs("data"))
return false; // Loading these protocols is secure.
return true;
}
void FrameLoader::checkIfDisplayInsecureContent(SecurityOrigin* context, const KURL& url)
{
if (!isMixedContent(context, url))
return;
String message = String::format("The page at %s displayed insecure content from %s.\n",
m_URL.string().utf8().data(), url.string().utf8().data());
m_frame->domWindow()->console()->addMessage(HTMLMessageSource, LogMessageType, WarningMessageLevel, message, 1, String());
m_client->didDisplayInsecureContent();
}
void FrameLoader::checkIfRunInsecureContent(SecurityOrigin* context, const KURL& url)
{
if (!isMixedContent(context, url))
return;
String message = String::format("The page at %s ran insecure content from %s.\n",
m_URL.string().utf8().data(), url.string().utf8().data());
m_frame->domWindow()->console()->addMessage(HTMLMessageSource, LogMessageType, WarningMessageLevel, message, 1, String());
m_client->didRunInsecureContent(context);
}
Frame* FrameLoader::opener()
{
return m_opener;
}
void FrameLoader::setOpener(Frame* opener)
{
if (m_opener)
m_opener->loader()->m_openedFrames.remove(m_frame);
if (opener)
opener->loader()->m_openedFrames.add(m_frame);
m_opener = opener;
if (m_frame->document()) {
m_frame->document()->initSecurityContext();
m_frame->domWindow()->setSecurityOrigin(m_frame->document()->securityOrigin());
}
}
void FrameLoader::handleFallbackContent()
{
HTMLFrameOwnerElement* owner = m_frame->ownerElement();
if (!owner || !owner->hasTagName(objectTag))
return;
static_cast<HTMLObjectElement*>(owner)->renderFallbackContent();
}
void FrameLoader::provisionalLoadStarted()
{
#ifdef ANDROID_INSTRUMENT
if (!m_frame->tree()->parent())
android::TimeCounter::reset();
#endif
m_firstLayoutDone = false;
m_frame->redirectScheduler()->cancel(true);
m_client->provisionalLoadStarted();
}
bool FrameLoader::isProcessingUserGesture()
{
Frame* frame = m_frame->tree()->top();
if (!frame->script()->canExecuteScripts())
return true; // If JavaScript is disabled, a user gesture must have initiated the navigation.
return frame->script()->processingUserGesture(mainThreadNormalWorld()); // FIXME: Use pageIsProcessingUserGesture.
}
void FrameLoader::resetMultipleFormSubmissionProtection()
{
m_submittedFormURL = KURL();
}
void FrameLoader::setEncoding(const String& name, bool userChosen)
{
if (!m_workingURL.isEmpty())
receivedFirstData();
m_encoding = name;
m_encodingWasChosenByUser = userChosen;
}
void FrameLoader::addData(const char* bytes, int length)
{
ASSERT(m_workingURL.isEmpty());
ASSERT(m_frame->document());
ASSERT(m_frame->document()->parsing());
write(bytes, length);
}
#if ENABLE(WML)
static inline bool frameContainsWMLContent(Frame* frame)
{
Document* document = frame ? frame->document() : 0;
if (!document)
return false;
return document->containsWMLContent() || document->isWMLDocument();
}
#endif
bool FrameLoader::canCachePageContainingThisFrame()
{
for (Frame* child = m_frame->tree()->firstChild(); child; child = child->tree()->nextSibling()) {
if (!child->loader()->canCachePageContainingThisFrame())
return false;
}
return m_documentLoader
&& m_documentLoader->mainDocumentError().isNull()
// FIXME: If we ever change this so that frames with plug-ins will be cached,
// we need to make sure that we don't cache frames that have outstanding NPObjects
// (objects created by the plug-in). Since there is no way to pause/resume a Netscape plug-in,
// they would need to be destroyed and then recreated, and there is no way that we can recreate
// the right NPObjects. See <rdar://problem/5197041> for more information.
&& !m_containsPlugIns
&& !m_URL.protocolIs("https")
&& (!m_frame->domWindow() || !m_frame->domWindow()->hasEventListeners(eventNames().unloadEvent))
#if ENABLE(DATABASE)
&& !m_frame->document()->hasOpenDatabases()
#endif
#if ENABLE(SHARED_WORKERS)
&& !SharedWorkerRepository::hasSharedWorkers(m_frame->document())
#endif
&& !m_frame->document()->usingGeolocation()
&& history()->currentItem()
&& !m_quickRedirectComing
&& !m_documentLoader->isLoadingInAPISense()
&& !m_documentLoader->isStopping()
&& m_frame->document()->canSuspendActiveDOMObjects()
#if ENABLE(OFFLINE_WEB_APPLICATIONS)
// FIXME: We should investigating caching frames that have an associated
// application cache. <rdar://problem/5917899> tracks that work.
&& m_documentLoader->applicationCacheHost()->canCacheInPageCache()
#endif
#if ENABLE(WML)
&& !frameContainsWMLContent(m_frame)
#endif
&& m_client->canCachePage()
;
}
bool FrameLoader::canCachePage()
{
#ifndef NDEBUG
logCanCachePageDecision();
#endif
// Cache the page, if possible.
// Don't write to the cache if in the middle of a redirect, since we will want to
// store the final page we end up on.
// No point writing to the cache on a reload or loadSame, since we will just write
// over it again when we leave that page.
// FIXME: <rdar://problem/4886592> - We should work out the complexities of caching pages with frames as they
// are the most interesting pages on the web, and often those that would benefit the most from caching!
FrameLoadType loadType = this->loadType();
return !m_frame->tree()->parent()
&& canCachePageContainingThisFrame()
&& m_frame->page()
&& m_frame->page()->backForwardList()->enabled()
&& m_frame->page()->backForwardList()->capacity() > 0
&& m_frame->page()->settings()->usesPageCache()
&& loadType != FrameLoadTypeReload
&& loadType != FrameLoadTypeReloadFromOrigin
&& loadType != FrameLoadTypeSame
;
}
#ifndef NDEBUG
static String& pageCacheLogPrefix(int indentLevel)
{
static int previousIndent = -1;
DEFINE_STATIC_LOCAL(String, prefix, ());
if (indentLevel != previousIndent) {
previousIndent = indentLevel;
prefix.truncate(0);
for (int i = 0; i < previousIndent; ++i)
prefix += " ";
}
return prefix;
}
static void pageCacheLog(const String& prefix, const String& message)
{
LOG(PageCache, "%s%s", prefix.utf8().data(), message.utf8().data());
}
#define PCLOG(...) pageCacheLog(pageCacheLogPrefix(indentLevel), String::format(__VA_ARGS__))
void FrameLoader::logCanCachePageDecision()
{
// Only bother logging for main frames that have actually loaded and have content.
if (m_creatingInitialEmptyDocument)
return;
KURL currentURL = m_documentLoader ? m_documentLoader->url() : KURL();
if (currentURL.isEmpty())
return;
int indentLevel = 0;
PCLOG("--------\n Determining if page can be cached:");
bool cannotCache = !logCanCacheFrameDecision(1);
FrameLoadType loadType = this->loadType();
do {
if (m_frame->tree()->parent())
{ PCLOG(" -Frame has a parent frame"); cannotCache = true; }
if (!m_frame->page()) {
PCLOG(" -There is no Page object");
cannotCache = true;
break;
}
if (!m_frame->page()->backForwardList()->enabled())
{ PCLOG(" -The back/forward list is disabled"); cannotCache = true; }
if (!(m_frame->page()->backForwardList()->capacity() > 0))
{ PCLOG(" -The back/forward list has a 0 capacity"); cannotCache = true; }
if (!m_frame->page()->settings()->usesPageCache())
{ PCLOG(" -Page settings says b/f cache disabled"); cannotCache = true; }
if (loadType == FrameLoadTypeReload)
{ PCLOG(" -Load type is: Reload"); cannotCache = true; }
if (loadType == FrameLoadTypeReloadFromOrigin)
{ PCLOG(" -Load type is: Reload from origin"); cannotCache = true; }
if (loadType == FrameLoadTypeSame)
{ PCLOG(" -Load type is: Same"); cannotCache = true; }
} while (false);
PCLOG(cannotCache ? " Page CANNOT be cached\n--------" : " Page CAN be cached\n--------");
}
bool FrameLoader::logCanCacheFrameDecision(int indentLevel)
{
// Only bother logging for frames that have actually loaded and have content.
if (m_creatingInitialEmptyDocument)
return false;
KURL currentURL = m_documentLoader ? m_documentLoader->url() : KURL();
if (currentURL.isEmpty())
return false;
PCLOG("+---");
KURL newURL = m_provisionalDocumentLoader ? m_provisionalDocumentLoader->url() : KURL();
if (!newURL.isEmpty())
PCLOG(" Determining if frame can be cached navigating from (%s) to (%s):", currentURL.string().utf8().data(), newURL.string().utf8().data());
else
PCLOG(" Determining if subframe with URL (%s) can be cached:", currentURL.string().utf8().data());
bool cannotCache = false;
do {
if (!m_documentLoader) {
PCLOG(" -There is no DocumentLoader object");
cannotCache = true;
break;
}
if (!m_documentLoader->mainDocumentError().isNull())
{ PCLOG(" -Main document has an error"); cannotCache = true; }
if (m_containsPlugIns)
{ PCLOG(" -Frame contains plugins"); cannotCache = true; }
if (m_URL.protocolIs("https"))
{ PCLOG(" -Frame is HTTPS"); cannotCache = true; }
if (m_frame->domWindow() && m_frame->domWindow()->hasEventListeners(eventNames().unloadEvent))
{ PCLOG(" -Frame has an unload event listener"); cannotCache = true; }
#if ENABLE(DATABASE)
if (m_frame->document()->hasOpenDatabases())
{ PCLOG(" -Frame has open database handles"); cannotCache = true; }
#endif
#if ENABLE(SHARED_WORKERS)
if (SharedWorkerRepository::hasSharedWorkers(m_frame->document()))
{ PCLOG(" -Frame has associated SharedWorkers"); cannotCache = true; }
#endif
if (m_frame->document()->usingGeolocation())
{ PCLOG(" -Frame uses Geolocation"); cannotCache = true; }
if (!history()->currentItem())
{ PCLOG(" -No current history item"); cannotCache = true; }
if (m_quickRedirectComing)
{ PCLOG(" -Quick redirect is coming"); cannotCache = true; }
if (m_documentLoader->isLoadingInAPISense())
{ PCLOG(" -DocumentLoader is still loading in API sense"); cannotCache = true; }
if (m_documentLoader->isStopping())
{ PCLOG(" -DocumentLoader is in the middle of stopping"); cannotCache = true; }
if (!m_frame->document()->canSuspendActiveDOMObjects())
{ PCLOG(" -The document cannot suspect its active DOM Objects"); cannotCache = true; }
#if ENABLE(OFFLINE_WEB_APPLICATIONS)
if (!m_documentLoader->applicationCacheHost()->canCacheInPageCache())
{ PCLOG(" -The DocumentLoader uses an application cache"); cannotCache = true; }
#endif
if (!m_client->canCachePage())
{ PCLOG(" -The client says this frame cannot be cached"); cannotCache = true; }
} while (false);
for (Frame* child = m_frame->tree()->firstChild(); child; child = child->tree()->nextSibling())
if (!child->loader()->logCanCacheFrameDecision(indentLevel + 1))
cannotCache = true;
PCLOG(cannotCache ? " Frame CANNOT be cached" : " Frame CAN be cached");
PCLOG("+---");
return !cannotCache;
}
#endif
void FrameLoader::updateFirstPartyForCookies()
{
if (m_frame->tree()->parent())
setFirstPartyForCookies(m_frame->tree()->parent()->document()->firstPartyForCookies());
else
setFirstPartyForCookies(m_URL);
}
void FrameLoader::setFirstPartyForCookies(const KURL& url)
{
m_frame->document()->setFirstPartyForCookies(url);
for (Frame* child = m_frame->tree()->firstChild(); child; child = child->tree()->nextSibling())
child->loader()->setFirstPartyForCookies(url);
}
// This does the same kind of work that didOpenURL does, except it relies on the fact
// that a higher level already checked that the URLs match and the scrolling is the right thing to do.
void FrameLoader::loadInSameDocument(const KURL& url, SerializedScriptValue* stateObject, bool isNewNavigation)
{
// If we have a state object, we cannot also be a new navigation.
ASSERT(!stateObject || (stateObject && !isNewNavigation));
// Update the data source's request with the new URL to fake the URL change
m_frame->document()->setURL(url);
documentLoader()->replaceRequestURLForSameDocumentNavigation(url);
if (isNewNavigation && !shouldTreatURLAsSameAsCurrent(url) && !stateObject) {
// NB: must happen after replaceRequestURLForSameDocumentNavigation(), since we add
// based on the current request. Must also happen before we openURL and displace the
// scroll position, since adding the BF item will save away scroll state.
// NB2: If we were loading a long, slow doc, and the user anchor nav'ed before
// it was done, currItem is now set the that slow doc, and prevItem is whatever was
// before it. Adding the b/f item will bump the slow doc down to prevItem, even
// though its load is not yet done. I think this all works out OK, for one because
// we have already saved away the scroll and doc state for the long slow load,
// but it's not an obvious case.
history()->updateBackForwardListForFragmentScroll();
}
bool hashChange = equalIgnoringFragmentIdentifier(url, m_URL) && url.fragmentIdentifier() != m_URL.fragmentIdentifier();
m_URL = url;
history()->updateForSameDocumentNavigation();
// If we were in the autoscroll/panScroll mode we want to stop it before following the link to the anchor
if (hashChange)
m_frame->eventHandler()->stopAutoscrollTimer();
// It's important to model this as a load that starts and immediately finishes.
// Otherwise, the parent frame may think we never finished loading.
started();
if (hashChange) {
if (FrameView* view = m_frame->view())
view->scrollToFragment(m_URL);
}
m_isComplete = false;
checkCompleted();
if (isNewNavigation) {
// This will clear previousItem from the rest of the frame tree that didn't
// doing any loading. We need to make a pass on this now, since for anchor nav
// we'll not go through a real load and reach Completed state.
checkLoadComplete();
}
if (stateObject) {
m_frame->document()->statePopped(stateObject);
m_client->dispatchDidPopStateWithinPage();
}
if (hashChange) {
m_frame->document()->dispatchWindowEvent(Event::create(eventNames().hashchangeEvent, false, false));
m_client->dispatchDidChangeLocationWithinPage();
}
// FrameLoaderClient::didFinishLoad() tells the internal load delegate the load finished with no error
m_client->didFinishLoad();
}
bool FrameLoader::isComplete() const
{
return m_isComplete;
}
void FrameLoader::completed()
{
RefPtr<Frame> protect(m_frame);
for (Frame* descendant = m_frame->tree()->traverseNext(m_frame); descendant; descendant = descendant->tree()->traverseNext(m_frame))
descendant->redirectScheduler()->startTimer();
if (Frame* parent = m_frame->tree()->parent())
parent->loader()->checkCompleted();
if (m_frame->view())
m_frame->view()->maintainScrollPositionAtAnchor(0);
}
void FrameLoader::started()
{
for (Frame* frame = m_frame; frame; frame = frame->tree()->parent())
frame->loader()->m_isComplete = false;
}
bool FrameLoader::containsPlugins() const
{
return m_containsPlugIns;
}
void FrameLoader::prepareForLoadStart()
{
if (Page* page = m_frame->page())
page->progress()->progressStarted(m_frame);
m_client->dispatchDidStartProvisionalLoad();
}
void FrameLoader::setupForReplace()
{
setState(FrameStateProvisional);
m_provisionalDocumentLoader = m_documentLoader;
m_documentLoader = 0;
detachChildren();
}
void FrameLoader::setupForReplaceByMIMEType(const String& newMIMEType)
{
activeDocumentLoader()->setupForReplaceByMIMEType(newMIMEType);
}
// This is a hack to allow keep navigation to http/https feeds working. To remove this
// we need to introduce new API akin to registerURLSchemeAsLocal, that registers a
// protocols navigation policy.
static bool isFeedWithNestedProtocolInHTTPFamily(const KURL& url)
{
const String& urlString = url.string();
if (!urlString.startsWith("feed", false))
return false;
return urlString.startsWith("feed://", false)
|| urlString.startsWith("feed:http:", false) || urlString.startsWith("feed:https:", false)
|| urlString.startsWith("feeds:http:", false) || urlString.startsWith("feeds:https:", false)
|| urlString.startsWith("feedsearch:http:", false) || urlString.startsWith("feedsearch:https:", false);
}
void FrameLoader::loadFrameRequest(const FrameLoadRequest& request, bool lockHistory, bool lockBackForwardList,
PassRefPtr<Event> event, PassRefPtr<FormState> formState, ReferrerPolicy referrerPolicy)
{
KURL url = request.resourceRequest().url();
String referrer;
String argsReferrer = request.resourceRequest().httpReferrer();
if (!argsReferrer.isEmpty())
referrer = argsReferrer;
else
referrer = m_outgoingReferrer;
ASSERT(frame()->document());
if (SecurityOrigin::shouldTreatURLAsLocal(url.string()) && !isFeedWithNestedProtocolInHTTPFamily(url)) {
if (!SecurityOrigin::canLoad(url, String(), frame()->document()) && !SecurityOrigin::canLoad(url, referrer, 0)) {
FrameLoader::reportLocalLoadFailed(m_frame, url.string());
return;
}
}
if (SecurityOrigin::shouldHideReferrer(url, referrer) || referrerPolicy == NoReferrer)
referrer = String();
FrameLoadType loadType;
if (request.resourceRequest().cachePolicy() == ReloadIgnoringCacheData)
loadType = FrameLoadTypeReload;
else if (lockBackForwardList)
loadType = FrameLoadTypeRedirectWithLockedBackForwardList;
else
loadType = FrameLoadTypeStandard;
#ifdef ANDROID_USER_GESTURE
if (request.resourceRequest().httpMethod() == "POST")
loadPostRequest(request.resourceRequest(), referrer, request.frameName(), lockHistory, loadType, event, formState.get(), request.resourceRequest().getUserGesture());
else
loadURL(request.resourceRequest().url(), referrer, request.frameName(), lockHistory, loadType, event, formState.get(), request.resourceRequest().getUserGesture());
#else
if (request.resourceRequest().httpMethod() == "POST")
loadPostRequest(request.resourceRequest(), referrer, request.frameName(), lockHistory, loadType, event, formState.get());
else
loadURL(request.resourceRequest().url(), referrer, request.frameName(), lockHistory, loadType, event, formState.get());
#endif
// FIXME: It's possible this targetFrame will not be the same frame that was targeted by the actual
// load if frame names have changed.
Frame* sourceFrame = formState ? formState->sourceFrame() : m_frame;
Frame* targetFrame = sourceFrame->loader()->findFrameForNavigation(request.frameName());
if (targetFrame && targetFrame != sourceFrame) {
if (Page* page = targetFrame->page())
#ifdef ANDROID_USER_GESTURE
page->chrome()->focus(request.resourceRequest().getUserGesture());
#else
page->chrome()->focus();
#endif
}
}
#ifdef ANDROID_USER_GESTURE
void FrameLoader::loadURL(const KURL& newURL, const String& referrer, const String& frameName, bool lockHistory, FrameLoadType newLoadType,
PassRefPtr<Event> event, PassRefPtr<FormState> prpFormState, bool userGesture)
#else
void FrameLoader::loadURL(const KURL& newURL, const String& referrer, const String& frameName, bool lockHistory, FrameLoadType newLoadType,
PassRefPtr<Event> event, PassRefPtr<FormState> prpFormState)
#endif
{
RefPtr<FormState> formState = prpFormState;
bool isFormSubmission = formState;
ResourceRequest request(newURL);
#ifdef ANDROID_USER_GESTURE
request.setUserGesture(userGesture);
#endif
if (!referrer.isEmpty()) {
request.setHTTPReferrer(referrer);
RefPtr<SecurityOrigin> referrerOrigin = SecurityOrigin::createFromString(referrer);
addHTTPOriginIfNeeded(request, referrerOrigin->toString());
}
addExtraFieldsToRequest(request, newLoadType, true, event || isFormSubmission);
if (newLoadType == FrameLoadTypeReload || newLoadType == FrameLoadTypeReloadFromOrigin)
request.setCachePolicy(ReloadIgnoringCacheData);
ASSERT(newLoadType != FrameLoadTypeSame);
// The search for a target frame is done earlier in the case of form submission.
Frame* targetFrame = isFormSubmission ? 0 : findFrameForNavigation(frameName);
if (targetFrame && targetFrame != m_frame) {
#ifdef ANDROID_USER_GESTURE
targetFrame->loader()->loadURL(newURL, referrer, String(), lockHistory, newLoadType, event, formState.release(), userGesture);
#else
targetFrame->loader()->loadURL(newURL, referrer, String(), lockHistory, newLoadType, event, formState.release());
#endif
return;
}
if (m_unloadEventBeingDispatched)
return;
NavigationAction action(newURL, newLoadType, isFormSubmission, event);
if (!targetFrame && !frameName.isEmpty()) {
policyChecker()->checkNewWindowPolicy(action, FrameLoader::callContinueLoadAfterNewWindowPolicy,
request, formState.release(), frameName, this);
return;
}
RefPtr<DocumentLoader> oldDocumentLoader = m_documentLoader;
bool sameURL = shouldTreatURLAsSameAsCurrent(newURL);
// Make sure to do scroll to anchor processing even if the URL is
// exactly the same so pages with '#' links and DHTML side effects
// work properly.
if (shouldScrollToAnchor(isFormSubmission, newLoadType, newURL)) {
oldDocumentLoader->setTriggeringAction(action);
policyChecker()->stopCheck();
policyChecker()->setLoadType(newLoadType);
policyChecker()->checkNavigationPolicy(request, oldDocumentLoader.get(), formState.release(),
callContinueFragmentScrollAfterNavigationPolicy, this);
} else {
// must grab this now, since this load may stop the previous load and clear this flag
bool isRedirect = m_quickRedirectComing;
loadWithNavigationAction(request, action, lockHistory, newLoadType, formState.release());
if (isRedirect) {
m_quickRedirectComing = false;
if (m_provisionalDocumentLoader)
m_provisionalDocumentLoader->setIsClientRedirect(true);
} else if (sameURL)
// Example of this case are sites that reload the same URL with a different cookie
// driving the generated content, or a master frame with links that drive a target
// frame, where the user has clicked on the same link repeatedly.
m_loadType = FrameLoadTypeSame;
}
}
void FrameLoader::load(const ResourceRequest& request, bool lockHistory)
{
load(request, SubstituteData(), lockHistory);
}
void FrameLoader::load(const ResourceRequest& request, const SubstituteData& substituteData, bool lockHistory)
{
if (m_inStopAllLoaders)
return;
// FIXME: is this the right place to reset loadType? Perhaps this should be done after loading is finished or aborted.
m_loadType = FrameLoadTypeStandard;
RefPtr<DocumentLoader> loader = m_client->createDocumentLoader(request, substituteData);
if (lockHistory && m_documentLoader)
loader->setClientRedirectSourceForHistory(m_documentLoader->didCreateGlobalHistoryEntry() ? m_documentLoader->urlForHistory() : m_documentLoader->clientRedirectSourceForHistory());
load(loader.get());
}
void FrameLoader::load(const ResourceRequest& request, const String& frameName, bool lockHistory)
{
if (frameName.isEmpty()) {
load(request, lockHistory);
return;
}
Frame* frame = findFrameForNavigation(frameName);
if (frame) {
frame->loader()->load(request, lockHistory);
return;
}
policyChecker()->checkNewWindowPolicy(NavigationAction(request.url(), NavigationTypeOther), FrameLoader::callContinueLoadAfterNewWindowPolicy, request, 0, frameName, this);
}
void FrameLoader::loadWithNavigationAction(const ResourceRequest& request, const NavigationAction& action, bool lockHistory, FrameLoadType type, PassRefPtr<FormState> formState)
{
RefPtr<DocumentLoader> loader = m_client->createDocumentLoader(request, SubstituteData());
if (lockHistory && m_documentLoader)
loader->setClientRedirectSourceForHistory(m_documentLoader->didCreateGlobalHistoryEntry() ? m_documentLoader->urlForHistory() : m_documentLoader->clientRedirectSourceForHistory());
loader->setTriggeringAction(action);
if (m_documentLoader)
loader->setOverrideEncoding(m_documentLoader->overrideEncoding());
loadWithDocumentLoader(loader.get(), type, formState);
}
void FrameLoader::load(DocumentLoader* newDocumentLoader)
{
ResourceRequest& r = newDocumentLoader->request();
addExtraFieldsToMainResourceRequest(r);
FrameLoadType type;
if (shouldTreatURLAsSameAsCurrent(newDocumentLoader->originalRequest().url())) {
r.setCachePolicy(ReloadIgnoringCacheData);
type = FrameLoadTypeSame;
} else
type = FrameLoadTypeStandard;
if (m_documentLoader)
newDocumentLoader->setOverrideEncoding(m_documentLoader->overrideEncoding());
// When we loading alternate content for an unreachable URL that we're
// visiting in the history list, we treat it as a reload so the history list
// is appropriately maintained.
//
// FIXME: This seems like a dangerous overloading of the meaning of "FrameLoadTypeReload" ...
// shouldn't a more explicit type of reload be defined, that means roughly
// "load without affecting history" ?
if (shouldReloadToHandleUnreachableURL(newDocumentLoader)) {
ASSERT(type == FrameLoadTypeStandard);
type = FrameLoadTypeReload;
}
loadWithDocumentLoader(newDocumentLoader, type, 0);
}
void FrameLoader::loadWithDocumentLoader(DocumentLoader* loader, FrameLoadType type, PassRefPtr<FormState> prpFormState)
{
ASSERT(m_client->hasWebView());
// Unfortunately the view must be non-nil, this is ultimately due
// to parser requiring a FrameView. We should fix this dependency.
ASSERT(m_frame->view());
if (m_unloadEventBeingDispatched)
return;
policyChecker()->setLoadType(type);
RefPtr<FormState> formState = prpFormState;
bool isFormSubmission = formState;
const KURL& newURL = loader->request().url();
if (shouldScrollToAnchor(isFormSubmission, policyChecker()->loadType(), newURL)) {
RefPtr<DocumentLoader> oldDocumentLoader = m_documentLoader;
NavigationAction action(newURL, policyChecker()->loadType(), isFormSubmission);
oldDocumentLoader->setTriggeringAction(action);
policyChecker()->stopCheck();
policyChecker()->checkNavigationPolicy(loader->request(), oldDocumentLoader.get(), formState,
callContinueFragmentScrollAfterNavigationPolicy, this);
} else {
if (Frame* parent = m_frame->tree()->parent())
loader->setOverrideEncoding(parent->loader()->documentLoader()->overrideEncoding());
policyChecker()->stopCheck();
setPolicyDocumentLoader(loader);
if (loader->triggeringAction().isEmpty())
loader->setTriggeringAction(NavigationAction(newURL, policyChecker()->loadType(), isFormSubmission));
if (Element* ownerElement = m_frame->document()->ownerElement()) {
if (!ownerElement->dispatchBeforeLoadEvent(loader->request().url().string())) {
continueLoadAfterNavigationPolicy(loader->request(), formState, false);
return;
}
}
policyChecker()->checkNavigationPolicy(loader->request(), loader, formState,
callContinueLoadAfterNavigationPolicy, this);
}
}
void FrameLoader::reportLocalLoadFailed(Frame* frame, const String& url)
{
ASSERT(!url.isEmpty());
if (!frame)
return;
frame->domWindow()->console()->addMessage(JSMessageSource, LogMessageType, ErrorMessageLevel, "Not allowed to load local resource: " + url, 0, String());
}
const ResourceRequest& FrameLoader::initialRequest() const
{
return activeDocumentLoader()->originalRequest();
}
void FrameLoader::receivedData(const char* data, int length)
{
activeDocumentLoader()->receivedData(data, length);
}
bool FrameLoader::willLoadMediaElementURL(KURL& url)
{
ResourceRequest request(url);
unsigned long identifier;
ResourceError error;
requestFromDelegate(request, identifier, error);
notifier()->sendRemainingDelegateMessages(m_documentLoader.get(), identifier, ResourceResponse(url, String(), -1, String(), String()), -1, error);
url = request.url();
return error.isNull();
}
ResourceError FrameLoader::interruptionForPolicyChangeError(const ResourceRequest& request)
{
return m_client->interruptForPolicyChangeError(request);
}
bool FrameLoader::shouldReloadToHandleUnreachableURL(DocumentLoader* docLoader)
{
KURL unreachableURL = docLoader->unreachableURL();
if (unreachableURL.isEmpty())
return false;
if (!isBackForwardLoadType(policyChecker()->loadType()))
return false;
// We only treat unreachableURLs specially during the delegate callbacks
// for provisional load errors and navigation policy decisions. The former
// case handles well-formed URLs that can't be loaded, and the latter
// case handles malformed URLs and unknown schemes. Loading alternate content
// at other times behaves like a standard load.
DocumentLoader* compareDocumentLoader = 0;
if (policyChecker()->delegateIsDecidingNavigationPolicy() || policyChecker()->delegateIsHandlingUnimplementablePolicy())
compareDocumentLoader = m_policyDocumentLoader.get();
else if (m_delegateIsHandlingProvisionalLoadError)
compareDocumentLoader = m_provisionalDocumentLoader.get();
return compareDocumentLoader && unreachableURL == compareDocumentLoader->request().url();
}
void FrameLoader::reloadWithOverrideEncoding(const String& encoding)
{
if (!m_documentLoader)
return;
ResourceRequest request = m_documentLoader->request();
KURL unreachableURL = m_documentLoader->unreachableURL();
if (!unreachableURL.isEmpty())
request.setURL(unreachableURL);
request.setCachePolicy(ReturnCacheDataElseLoad);
RefPtr<DocumentLoader> loader = m_client->createDocumentLoader(request, SubstituteData());
setPolicyDocumentLoader(loader.get());
loader->setOverrideEncoding(encoding);
loadWithDocumentLoader(loader.get(), FrameLoadTypeReload, 0);
}
void FrameLoader::reload(bool endToEndReload)
{
if (!m_documentLoader)
return;
// If a window is created by javascript, its main frame can have an empty but non-nil URL.
// Reloading in this case will lose the current contents (see 4151001).
if (m_documentLoader->request().url().isEmpty())
return;
ResourceRequest initialRequest = m_documentLoader->request();
// Replace error-page URL with the URL we were trying to reach.
KURL unreachableURL = m_documentLoader->unreachableURL();
if (!unreachableURL.isEmpty())
initialRequest.setURL(unreachableURL);
// Create a new document loader for the reload, this will become m_documentLoader eventually,
// but first it has to be the "policy" document loader, and then the "provisional" document loader.
RefPtr<DocumentLoader> loader = m_client->createDocumentLoader(initialRequest, SubstituteData());
ResourceRequest& request = loader->request();
// FIXME: We don't have a mechanism to revalidate the main resource without reloading at the moment.
request.setCachePolicy(ReloadIgnoringCacheData);
// If we're about to re-post, set up action so the application can warn the user.
if (request.httpMethod() == "POST")
loader->setTriggeringAction(NavigationAction(request.url(), NavigationTypeFormResubmitted));
loader->setOverrideEncoding(m_documentLoader->overrideEncoding());
loadWithDocumentLoader(loader.get(), endToEndReload ? FrameLoadTypeReloadFromOrigin : FrameLoadTypeReload, 0);
}
static bool canAccessAncestor(const SecurityOrigin* activeSecurityOrigin, Frame* targetFrame)
{
// targetFrame can be NULL when we're trying to navigate a top-level frame
// that has a NULL opener.
if (!targetFrame)
return false;
for (Frame* ancestorFrame = targetFrame; ancestorFrame; ancestorFrame = ancestorFrame->tree()->parent()) {
Document* ancestorDocument = ancestorFrame->document();
if (!ancestorDocument)
return true;
const SecurityOrigin* ancestorSecurityOrigin = ancestorDocument->securityOrigin();
if (activeSecurityOrigin->canAccess(ancestorSecurityOrigin))
return true;
}
return false;
}
bool FrameLoader::shouldAllowNavigation(Frame* targetFrame) const
{
// The navigation change is safe if the active frame is:
// - in the same security origin as the target or one of the target's
// ancestors.
//
// Or the target frame is:
// - a top-level frame in the frame hierarchy and the active frame can
// navigate the target frame's opener per above or it is the opener of
// the target frame.
if (!targetFrame)
return true;
// Performance optimization.
if (m_frame == targetFrame)
return true;
// A sandboxed frame can only navigate itself and its descendants.
if (isDocumentSandboxed(SandboxNavigation) && !targetFrame->tree()->isDescendantOf(m_frame))
return false;
// Let a frame navigate the top-level window that contains it. This is
// important to allow because it lets a site "frame-bust" (escape from a
// frame created by another web site).
if (targetFrame == m_frame->tree()->top())
return true;
// Let a frame navigate its opener if the opener is a top-level window.
if (!targetFrame->tree()->parent() && m_frame->loader()->opener() == targetFrame)
return true;
Document* activeDocument = m_frame->document();
ASSERT(activeDocument);
const SecurityOrigin* activeSecurityOrigin = activeDocument->securityOrigin();
// For top-level windows, check the opener.
if (!targetFrame->tree()->parent() && canAccessAncestor(activeSecurityOrigin, targetFrame->loader()->opener()))
return true;
// In general, check the frame's ancestors.
if (canAccessAncestor(activeSecurityOrigin, targetFrame))
return true;
Settings* settings = targetFrame->settings();
if (settings && !settings->privateBrowsingEnabled()) {
Document* targetDocument = targetFrame->document();
// FIXME: this error message should contain more specifics of why the navigation change is not allowed.
String message = String::format("Unsafe JavaScript attempt to initiate a navigation change for frame with URL %s from frame with URL %s.\n",
targetDocument->url().string().utf8().data(), activeDocument->url().string().utf8().data());
// FIXME: should we print to the console of the activeFrame as well?
targetFrame->domWindow()->console()->addMessage(JSMessageSource, LogMessageType, ErrorMessageLevel, message, 1, String());
}
return false;
}
void FrameLoader::stopLoadingSubframes()
{
for (RefPtr<Frame> child = m_frame->tree()->firstChild(); child; child = child->tree()->nextSibling())
child->loader()->stopAllLoaders();
}
void FrameLoader::stopAllLoaders(DatabasePolicy databasePolicy)
{
ASSERT(!m_frame->document() || !m_frame->document()->inPageCache());
if (m_unloadEventBeingDispatched)
return;
// If this method is called from within this method, infinite recursion can occur (3442218). Avoid this.
if (m_inStopAllLoaders)
return;
m_inStopAllLoaders = true;
policyChecker()->stopCheck();
stopLoadingSubframes();
if (m_provisionalDocumentLoader)
m_provisionalDocumentLoader->stopLoading(databasePolicy);
if (m_documentLoader)
m_documentLoader->stopLoading(databasePolicy);
setProvisionalDocumentLoader(0);
#if ENABLE(ARCHIVE) // ANDROID extension: disabled to reduce code size
if (m_documentLoader)
m_documentLoader->clearArchiveResources();
#endif
m_checkTimer.stop();
m_inStopAllLoaders = false;
}
void FrameLoader::stopForUserCancel(bool deferCheckLoadComplete)
{
stopAllLoaders();
if (deferCheckLoadComplete)
scheduleCheckLoadComplete();
else if (m_frame->page())
checkLoadComplete();
}
DocumentLoader* FrameLoader::activeDocumentLoader() const
{
if (m_state == FrameStateProvisional)
return m_provisionalDocumentLoader.get();
return m_documentLoader.get();
}
bool FrameLoader::isLoading() const
{
DocumentLoader* docLoader = activeDocumentLoader();
if (!docLoader)
return false;
return docLoader->isLoadingMainResource() || docLoader->isLoadingSubresources() || docLoader->isLoadingPlugIns();
}
bool FrameLoader::frameHasLoaded() const
{
return m_committedFirstRealDocumentLoad || (m_provisionalDocumentLoader && !m_creatingInitialEmptyDocument);
}
void FrameLoader::setDocumentLoader(DocumentLoader* loader)
{
if (!loader && !m_documentLoader)
return;
ASSERT(loader != m_documentLoader);
ASSERT(!loader || loader->frameLoader() == this);
m_client->prepareForDataSourceReplacement();
detachChildren();
if (m_documentLoader)
m_documentLoader->detachFromFrame();
m_documentLoader = loader;
}
void FrameLoader::setPolicyDocumentLoader(DocumentLoader* loader)
{
if (m_policyDocumentLoader == loader)
return;
ASSERT(m_frame);
if (loader)
loader->setFrame(m_frame);
if (m_policyDocumentLoader
&& m_policyDocumentLoader != m_provisionalDocumentLoader
&& m_policyDocumentLoader != m_documentLoader)
m_policyDocumentLoader->detachFromFrame();
m_policyDocumentLoader = loader;
}
void FrameLoader::setProvisionalDocumentLoader(DocumentLoader* loader)
{
ASSERT(!loader || !m_provisionalDocumentLoader);
ASSERT(!loader || loader->frameLoader() == this);
if (m_provisionalDocumentLoader && m_provisionalDocumentLoader != m_documentLoader)
m_provisionalDocumentLoader->detachFromFrame();
m_provisionalDocumentLoader = loader;
}
double FrameLoader::timeOfLastCompletedLoad()
{
return storedTimeOfLastCompletedLoad;
}
void FrameLoader::setState(FrameState newState)
{
m_state = newState;
if (newState == FrameStateProvisional)
provisionalLoadStarted();
else if (newState == FrameStateComplete) {
frameLoadCompleted();
storedTimeOfLastCompletedLoad = currentTime();
if (m_documentLoader)
m_documentLoader->stopRecordingResponses();
}
}
void FrameLoader::clearProvisionalLoad()
{
setProvisionalDocumentLoader(0);
if (Page* page = m_frame->page())
page->progress()->progressCompleted(m_frame);
setState(FrameStateComplete);
}
void FrameLoader::markLoadComplete()
{
setState(FrameStateComplete);
}
void FrameLoader::commitProvisionalLoad(PassRefPtr<CachedPage> prpCachedPage)
{
RefPtr<CachedPage> cachedPage = prpCachedPage;
RefPtr<DocumentLoader> pdl = m_provisionalDocumentLoader;
LOG(PageCache, "WebCoreLoading %s: About to commit provisional load from previous URL '%s' to new URL '%s'", m_frame->tree()->name().string().utf8().data(), m_URL.string().utf8().data(),
pdl ? pdl->url().string().utf8().data() : "<no provisional DocumentLoader>");
// Check to see if we need to cache the page we are navigating away from into the back/forward cache.
// We are doing this here because we know for sure that a new page is about to be loaded.
cachePageForHistoryItem(history()->currentItem());
if (m_loadType != FrameLoadTypeReplace)
closeOldDataSources();
if (!cachedPage && !m_creatingInitialEmptyDocument)
m_client->makeRepresentation(pdl.get());
transitionToCommitted(cachedPage);
// Call clientRedirectCancelledOrFinished() here so that the frame load delegate is notified that the redirect's
// status has changed, if there was a redirect. The frame load delegate may have saved some state about
// the redirect in its -webView:willPerformClientRedirectToURL:delay:fireDate:forFrame:. Since we are
// just about to commit a new page, there cannot possibly be a pending redirect at this point.
if (m_sentRedirectNotification)
clientRedirectCancelledOrFinished(false);
if (cachedPage && cachedPage->document())
open(*cachedPage);
else {
KURL url = pdl->substituteData().responseURL();
if (url.isEmpty())
url = pdl->url();
if (url.isEmpty())
url = pdl->responseURL();
if (url.isEmpty())
url = blankURL();
didOpenURL(url);
}
LOG(Loading, "WebCoreLoading %s: Finished committing provisional load to URL %s", m_frame->tree()->name().string().utf8().data(), m_URL.string().utf8().data());
if (m_loadType == FrameLoadTypeStandard && m_documentLoader->isClientRedirect())
history()->updateForClientRedirect();
if (m_loadingFromCachedPage) {
m_frame->document()->documentDidBecomeActive();
// Force a layout to update view size and thereby update scrollbars.
m_frame->view()->forceLayout();
const ResponseVector& responses = m_documentLoader->responses();
size_t count = responses.size();
for (size_t i = 0; i < count; i++) {
const ResourceResponse& response = responses[i];
// FIXME: If the WebKit client changes or cancels the request, this is not respected.
ResourceError error;
unsigned long identifier;
ResourceRequest request(response.url());
requestFromDelegate(request, identifier, error);
// FIXME: If we get a resource with more than 2B bytes, this code won't do the right thing.
// However, with today's computers and networking speeds, this won't happen in practice.
// Could be an issue with a giant local file.
notifier()->sendRemainingDelegateMessages(m_documentLoader.get(), identifier, response, static_cast<int>(response.expectedContentLength()), error);
}
pageCache()->remove(history()->currentItem());
m_documentLoader->setPrimaryLoadComplete(true);
// FIXME: Why only this frame and not parent frames?
checkLoadCompleteForThisFrame();
}
}
void FrameLoader::transitionToCommitted(PassRefPtr<CachedPage> cachedPage)
{
ASSERT(m_client->hasWebView());
ASSERT(m_state == FrameStateProvisional);
if (m_state != FrameStateProvisional)
return;
m_client->setCopiesOnScroll();
history()->updateForCommit();
// The call to closeURL() invokes the unload event handler, which can execute arbitrary
// JavaScript. If the script initiates a new load, we need to abandon the current load,
// or the two will stomp each other.
DocumentLoader* pdl = m_provisionalDocumentLoader.get();
if (m_documentLoader)
closeURL();
if (pdl != m_provisionalDocumentLoader)
return;
// Nothing else can interupt this commit - set the Provisional->Committed transition in stone
if (m_documentLoader)
m_documentLoader->stopLoadingSubresources();
if (m_documentLoader)
m_documentLoader->stopLoadingPlugIns();
setDocumentLoader(m_provisionalDocumentLoader.get());
setProvisionalDocumentLoader(0);
setState(FrameStateCommittedPage);
// Handle adding the URL to the back/forward list.
DocumentLoader* dl = m_documentLoader.get();
String ptitle = dl->title();
switch (m_loadType) {
case FrameLoadTypeForward:
case FrameLoadTypeBack:
case FrameLoadTypeBackWMLDeckNotAccessible:
case FrameLoadTypeIndexedBackForward:
if (Page* page = m_frame->page()) {
if (page->backForwardList()) {
history()->updateForBackForwardNavigation();
if (history()->currentItem())
m_pendingStateObject = history()->currentItem()->stateObject();
// Create a document view for this document, or used the cached view.
if (cachedPage) {
DocumentLoader* cachedDocumentLoader = cachedPage->documentLoader();
ASSERT(cachedDocumentLoader);
cachedDocumentLoader->setFrame(m_frame);
m_client->transitionToCommittedFromCachedFrame(cachedPage->cachedMainFrame());
} else
m_client->transitionToCommittedForNewPage();
}
}
break;
case FrameLoadTypeReload:
case FrameLoadTypeReloadFromOrigin:
case FrameLoadTypeSame:
case FrameLoadTypeReplace:
history()->updateForReload();
m_client->transitionToCommittedForNewPage();
break;
case FrameLoadTypeStandard:
history()->updateForStandardLoad();
#ifndef BUILDING_ON_TIGER
// This code was originally added for a Leopard performance imporvement. We decided to
// ifdef it to fix correctness issues on Tiger documented in <rdar://problem/5441823>.
if (m_frame->view())
m_frame->view()->setScrollbarsSuppressed(true);
#endif
m_client->transitionToCommittedForNewPage();
break;
case FrameLoadTypeRedirectWithLockedBackForwardList:
history()->updateForRedirectWithLockedBackForwardList();
m_client->transitionToCommittedForNewPage();
break;
// FIXME Remove this check when dummy ds is removed (whatever "dummy ds" is).
// An exception should be thrown if we're in the FrameLoadTypeUninitialized state.
default:
ASSERT_NOT_REACHED();
}
m_responseMIMEType = dl->responseMIMEType();
// Tell the client we've committed this URL.
ASSERT(m_frame->view());
if (m_creatingInitialEmptyDocument)
return;
m_committedFirstRealDocumentLoad = true;
if (!m_client->hasHTMLView())
receivedFirstData();
else if (cachedPage) {
// For non-cached HTML pages, these methods are called in receivedFirstData().
dispatchDidCommitLoad();
// If we have a title let the WebView know about it.
if (!ptitle.isNull())
m_client->dispatchDidReceiveTitle(ptitle);
}
}
void FrameLoader::clientRedirectCancelledOrFinished(bool cancelWithLoadInProgress)
{
// Note that -webView:didCancelClientRedirectForFrame: is called on the frame load delegate even if
// the redirect succeeded. We should either rename this API, or add a new method, like
// -webView:didFinishClientRedirectForFrame:
m_client->dispatchDidCancelClientRedirect();
if (!cancelWithLoadInProgress)
m_quickRedirectComing = false;
m_sentRedirectNotification = false;
}
void FrameLoader::clientRedirected(const KURL& url, double seconds, double fireDate, bool lockBackForwardList)
{
m_client->dispatchWillPerformClientRedirect(url, seconds, fireDate);
// Remember that we sent a redirect notification to the frame load delegate so that when we commit
// the next provisional load, we can send a corresponding -webView:didCancelClientRedirectForFrame:
m_sentRedirectNotification = true;
// If a "quick" redirect comes in, we set a special mode so we treat the next
// load as part of the original navigation. If we don't have a document loader, we have
// no "original" load on which to base a redirect, so we treat the redirect as a normal load.
// Loads triggered by JavaScript form submissions never count as quick redirects.
m_quickRedirectComing = lockBackForwardList && m_documentLoader && !m_isExecutingJavaScriptFormAction;
}
bool FrameLoader::shouldReload(const KURL& currentURL, const KURL& destinationURL)
{
#if ENABLE(WML)
// All WML decks are supposed to be reloaded, even within the same URL fragment
if (frameContainsWMLContent(m_frame))
return true;
#endif
// This function implements the rule: "Don't reload if navigating by fragment within
// the same URL, but do reload if going to a new URL or to the same URL with no
// fragment identifier at all."
if (!destinationURL.hasFragmentIdentifier())
return true;
return !equalIgnoringFragmentIdentifier(currentURL, destinationURL);
}
void FrameLoader::closeOldDataSources()
{
// FIXME: Is it important for this traversal to be postorder instead of preorder?
// If so, add helpers for postorder traversal, and use them. If not, then lets not
// use a recursive algorithm here.
for (Frame* child = m_frame->tree()->firstChild(); child; child = child->tree()->nextSibling())
child->loader()->closeOldDataSources();
if (m_documentLoader)
m_client->dispatchWillClose();
m_client->setMainFrameDocumentReady(false); // stop giving out the actual DOMDocument to observers
}
void FrameLoader::open(CachedPage& cachedPage)
{
ASSERT(!m_frame->tree()->parent());
ASSERT(m_frame->page());
ASSERT(m_frame->page()->mainFrame() == m_frame);
m_frame->redirectScheduler()->cancel();
// We still have to close the previous part page.
closeURL();
// Delete old status bar messages (if it _was_ activated on last URL).
if (m_frame->script()->canExecuteScripts()) {
m_frame->setJSStatusBarText(String());
m_frame->setJSDefaultStatusBarText(String());
}
cachedPage.restore(m_frame->page());
checkCompleted();
}
void FrameLoader::open(CachedFrameBase& cachedFrame)
{
m_isComplete = false;
// Don't re-emit the load event.
m_didCallImplicitClose = true;
KURL url = cachedFrame.url();
if (url.protocolInHTTPFamily() && !url.host().isEmpty() && url.path().isEmpty())
url.setPath("/");
m_URL = url;
m_workingURL = url;
started();
clear(true, true, cachedFrame.isMainFrame());
Document* document = cachedFrame.document();
ASSERT(document);
document->setInPageCache(false);
m_needsClear = true;
m_isComplete = false;
m_didCallImplicitClose = false;
m_outgoingReferrer = url.string();
FrameView* view = cachedFrame.view();
// When navigating to a CachedFrame its FrameView should never be null. If it is we'll crash in creative ways downstream.
ASSERT(view);
view->setWasScrolledByUser(false);
// Use the current ScrollView's frame rect.
if (m_frame->view())
view->setFrameRect(m_frame->view()->frameRect());
m_frame->setView(view);
m_frame->setDocument(document);
m_frame->setDOMWindow(cachedFrame.domWindow());
m_frame->domWindow()->setURL(document->url());
m_frame->domWindow()->setSecurityOrigin(document->securityOrigin());
m_decoder = document->decoder();
updateFirstPartyForCookies();
cachedFrame.restore();
}
bool FrameLoader::isStopping() const
{
return activeDocumentLoader()->isStopping();
}
void FrameLoader::finishedLoading()
{
// Retain because the stop may release the last reference to it.
RefPtr<Frame> protect(m_frame);
RefPtr<DocumentLoader> dl = activeDocumentLoader();
dl->finishedLoading();
if (!dl->mainDocumentError().isNull() || !dl->frameLoader())
return;
dl->setPrimaryLoadComplete(true);
m_client->dispatchDidLoadMainResource(dl.get());
checkLoadComplete();
}
bool FrameLoader::isHostedByObjectElement() const
{
HTMLFrameOwnerElement* owner = m_frame->ownerElement();
return owner && owner->hasTagName(objectTag);
}
bool FrameLoader::isLoadingMainFrame() const
{
Page* page = m_frame->page();
return page && m_frame == page->mainFrame();
}
bool FrameLoader::canShowMIMEType(const String& MIMEType) const
{
return m_client->canShowMIMEType(MIMEType);
}
bool FrameLoader::representationExistsForURLScheme(const String& URLScheme)
{
return m_client->representationExistsForURLScheme(URLScheme);
}
String FrameLoader::generatedMIMETypeForURLScheme(const String& URLScheme)
{
return m_client->generatedMIMETypeForURLScheme(URLScheme);
}
void FrameLoader::didReceiveServerRedirectForProvisionalLoadForFrame()
{
m_client->dispatchDidReceiveServerRedirectForProvisionalLoad();
}
void FrameLoader::finishedLoadingDocument(DocumentLoader* loader)
{
// FIXME: Platforms shouldn't differ here!
#if PLATFORM(WIN) || PLATFORM(CHROMIUM) || defined(ANDROID)
if (m_creatingInitialEmptyDocument)
return;
#endif
#if ENABLE(ARCHIVE) // ANDROID extension: disabled to reduce code size
// If loading a webarchive, run through webarchive machinery
const String& responseMIMEType = loader->responseMIMEType();
// FIXME: Mac's FrameLoaderClient::finishedLoading() method does work that is required even with Archive loads
// so we still need to call it. Other platforms should only call finishLoading for non-archive loads
// That work should be factored out so this #ifdef can be removed
#if PLATFORM(MAC)
m_client->finishedLoading(loader);
if (!ArchiveFactory::isArchiveMimeType(responseMIMEType))
return;
#else
if (!ArchiveFactory::isArchiveMimeType(responseMIMEType)) {
m_client->finishedLoading(loader);
return;
}
#endif
RefPtr<Archive> archive(ArchiveFactory::create(loader->mainResourceData().get(), responseMIMEType));
if (!archive)
return;
loader->addAllArchiveResources(archive.get());
ArchiveResource* mainResource = archive->mainResource();
loader->setParsedArchiveData(mainResource->data());
m_responseMIMEType = mainResource->mimeType();
closeURL();
didOpenURL(mainResource->url());
String userChosenEncoding = documentLoader()->overrideEncoding();
bool encodingIsUserChosen = !userChosenEncoding.isNull();
setEncoding(encodingIsUserChosen ? userChosenEncoding : mainResource->textEncoding(), encodingIsUserChosen);
ASSERT(m_frame->document());
addData(mainResource->data()->data(), mainResource->data()->size());
#else
m_client->finishedLoading(loader);
#endif // ARCHIVE
}
bool FrameLoader::isReplacing() const
{
return m_loadType == FrameLoadTypeReplace;
}
void FrameLoader::setReplacing()
{
m_loadType = FrameLoadTypeReplace;
}
void FrameLoader::revertToProvisional(DocumentLoader* loader)
{
m_client->revertToProvisionalState(loader);
}
bool FrameLoader::subframeIsLoading() const
{
// It's most likely that the last added frame is the last to load so we walk backwards.
for (Frame* child = m_frame->tree()->lastChild(); child; child = child->tree()->previousSibling()) {
FrameLoader* childLoader = child->loader();
DocumentLoader* documentLoader = childLoader->documentLoader();
if (documentLoader && documentLoader->isLoadingInAPISense())
return true;
documentLoader = childLoader->provisionalDocumentLoader();
if (documentLoader && documentLoader->isLoadingInAPISense())
return true;
}
return false;
}
void FrameLoader::willChangeTitle(DocumentLoader* loader)
{
m_client->willChangeTitle(loader);
}
FrameLoadType FrameLoader::loadType() const
{
return m_loadType;
}
CachePolicy FrameLoader::subresourceCachePolicy() const
{
if (m_isComplete)
return CachePolicyVerify;
if (m_loadType == FrameLoadTypeReloadFromOrigin)
return CachePolicyReload;
if (Frame* parentFrame = m_frame->tree()->parent()) {
CachePolicy parentCachePolicy = parentFrame->loader()->subresourceCachePolicy();
if (parentCachePolicy != CachePolicyVerify)
return parentCachePolicy;
}
// FIXME: POST documents are always Reloads, but their subresources should still be Revalidate.
// If we bring the CachePolicy.h and ResourceRequest cache policy enums in sync with each other and
// remember "Revalidate" in ResourceRequests, we can remove this "POST" check and return either "Reload"
// or "Revalidate" if the DocumentLoader was requested with either.
const ResourceRequest& request(documentLoader()->request());
if (request.cachePolicy() == ReloadIgnoringCacheData && !equalIgnoringCase(request.httpMethod(), "post"))
return CachePolicyRevalidate;
if (m_loadType == FrameLoadTypeReload)
return CachePolicyRevalidate;
if (request.cachePolicy() == ReturnCacheDataElseLoad)
return CachePolicyAllowStale;
return CachePolicyVerify;
}
void FrameLoader::checkLoadCompleteForThisFrame()
{
ASSERT(m_client->hasWebView());
switch (m_state) {
case FrameStateProvisional: {
if (m_delegateIsHandlingProvisionalLoadError)
return;
RefPtr<DocumentLoader> pdl = m_provisionalDocumentLoader;
if (!pdl)
return;
// If we've received any errors we may be stuck in the provisional state and actually complete.
const ResourceError& error = pdl->mainDocumentError();
if (error.isNull())
return;
// Check all children first.
RefPtr<HistoryItem> item;
if (Page* page = m_frame->page())
if (isBackForwardLoadType(loadType()) && m_frame == page->mainFrame())
item = history()->currentItem();
bool shouldReset = true;
if (!(pdl->isLoadingInAPISense() && !pdl->isStopping())) {
m_delegateIsHandlingProvisionalLoadError = true;
m_client->dispatchDidFailProvisionalLoad(error);
m_delegateIsHandlingProvisionalLoadError = false;
// FIXME: can stopping loading here possibly have any effect, if isLoading is false,
// which it must be to be in this branch of the if? And is it OK to just do a full-on
// stopAllLoaders instead of stopLoadingSubframes?
stopLoadingSubframes();
pdl->stopLoading();
// If we're in the middle of loading multipart data, we need to restore the document loader.
if (isReplacing() && !m_documentLoader.get())
setDocumentLoader(m_provisionalDocumentLoader.get());
// Finish resetting the load state, but only if another load hasn't been started by the
// delegate callback.
if (pdl == m_provisionalDocumentLoader)
clearProvisionalLoad();
else if (activeDocumentLoader()) {
KURL unreachableURL = activeDocumentLoader()->unreachableURL();
if (!unreachableURL.isEmpty() && unreachableURL == pdl->request().url())
shouldReset = false;
}
}
if (shouldReset && item)
if (Page* page = m_frame->page()) {
page->backForwardList()->goToItem(item.get());
Settings* settings = m_frame->settings();
page->setGlobalHistoryItem((!settings || settings->privateBrowsingEnabled()) ? 0 : item.get());
}
return;
}
case FrameStateCommittedPage: {
DocumentLoader* dl = m_documentLoader.get();
if (!dl || (dl->isLoadingInAPISense() && !dl->isStopping()))
return;
markLoadComplete();
// FIXME: Is this subsequent work important if we already navigated away?
// Maybe there are bugs because of that, or extra work we can skip because
// the new page is ready.
m_client->forceLayoutForNonHTML();
// If the user had a scroll point, scroll to it, overriding the anchor point if any.
if (Page* page = m_frame->page())
if ((isBackForwardLoadType(m_loadType) || m_loadType == FrameLoadTypeReload || m_loadType == FrameLoadTypeReloadFromOrigin) && page->backForwardList())
history()->restoreScrollPositionAndViewState();
if (m_creatingInitialEmptyDocument || !m_committedFirstRealDocumentLoad)
return;
const ResourceError& error = dl->mainDocumentError();
#ifndef NDEBUG
m_didDispatchDidCommitLoad = false;
#endif
if (!error.isNull())
m_client->dispatchDidFailLoad(error);
else
m_client->dispatchDidFinishLoad();
if (Page* page = m_frame->page())
page->progress()->progressCompleted(m_frame);
#ifdef ANDROID_INSTRUMENT
if (!m_frame->tree()->parent() && m_frame->document()->renderArena())
android::TimeCounter::report(m_URL, cache()->getLiveSize(), cache()->getDeadSize(),
m_frame->document()->renderArena()->reportPoolSize());
#endif
return;
}
case FrameStateComplete:
frameLoadCompleted();
return;
}
ASSERT_NOT_REACHED();
}
void FrameLoader::continueLoadAfterWillSubmitForm()
{
if (!m_provisionalDocumentLoader)
return;
// DocumentLoader calls back to our prepareForLoadStart
m_provisionalDocumentLoader->prepareForLoadStart();
// The load might be cancelled inside of prepareForLoadStart(), nulling out the m_provisionalDocumentLoader,
// so we need to null check it again.
if (!m_provisionalDocumentLoader)
return;
DocumentLoader* activeDocLoader = activeDocumentLoader();
if (activeDocLoader && activeDocLoader->isLoadingMainResource())
return;
m_loadingFromCachedPage = false;
unsigned long identifier = 0;
if (Page* page = m_frame->page()) {
identifier = page->progress()->createUniqueIdentifier();
notifier()->assignIdentifierToInitialRequest(identifier, m_provisionalDocumentLoader.get(), m_provisionalDocumentLoader->originalRequest());
}
if (!m_provisionalDocumentLoader->startLoadingMainResource(identifier))
m_provisionalDocumentLoader->updateLoading();
}
void FrameLoader::didFirstLayout()
{
if (Page* page = m_frame->page())
if (isBackForwardLoadType(m_loadType) && page->backForwardList())
history()->restoreScrollPositionAndViewState();
m_firstLayoutDone = true;
m_client->dispatchDidFirstLayout();
}
void FrameLoader::didFirstVisuallyNonEmptyLayout()
{
m_client->dispatchDidFirstVisuallyNonEmptyLayout();
}
void FrameLoader::frameLoadCompleted()
{
// Note: Can be called multiple times.
m_client->frameLoadCompleted();
history()->updateForFrameLoadCompleted();
// After a canceled provisional load, firstLayoutDone is false.
// Reset it to true if we're displaying a page.
if (m_documentLoader)
m_firstLayoutDone = true;
}
bool FrameLoader::firstLayoutDone() const
{
return m_firstLayoutDone;
}
void FrameLoader::detachChildren()
{
// FIXME: Is it really necessary to do this in reverse order?
Frame* previous;
for (Frame* child = m_frame->tree()->lastChild(); child; child = previous) {
previous = child->tree()->previousSibling();
child->loader()->detachFromParent();
}
}
void FrameLoader::closeAndRemoveChild(Frame* child)
{
child->tree()->detachFromParent();
child->setView(0);
if (child->ownerElement() && child->page())
child->page()->decrementFrameCount();
child->pageDestroyed();
m_frame->tree()->removeChild(child);
}
void FrameLoader::recursiveCheckLoadComplete()
{
Vector<RefPtr<Frame>, 10> frames;
for (RefPtr<Frame> frame = m_frame->tree()->firstChild(); frame; frame = frame->tree()->nextSibling())
frames.append(frame);
unsigned size = frames.size();
for (unsigned i = 0; i < size; i++)
frames[i]->loader()->recursiveCheckLoadComplete();
checkLoadCompleteForThisFrame();
}
// Called every time a resource is completely loaded, or an error is received.
void FrameLoader::checkLoadComplete()
{
ASSERT(m_client->hasWebView());
m_shouldCallCheckLoadComplete = false;
// FIXME: Always traversing the entire frame tree is a bit inefficient, but
// is currently needed in order to null out the previous history item for all frames.
if (Page* page = m_frame->page())
page->mainFrame()->loader()->recursiveCheckLoadComplete();
}
int FrameLoader::numPendingOrLoadingRequests(bool recurse) const
{
if (!recurse)
return numRequests(m_frame->document());
int count = 0;
for (Frame* frame = m_frame; frame; frame = frame->tree()->traverseNext(m_frame))
count += numRequests(frame->document());
return count;
}
String FrameLoader::userAgent(const KURL& url) const
{
return m_client->userAgent(url);
}
void FrameLoader::tokenizerProcessedData()
{
checkCompleted();
}
void FrameLoader::handledOnloadEvents()
{
m_client->dispatchDidHandleOnloadEvents();
#if ENABLE(OFFLINE_WEB_APPLICATIONS)
if (documentLoader())
documentLoader()->applicationCacheHost()->stopDeferringEvents();
#endif
}
void FrameLoader::frameDetached()
{
stopAllLoaders();
m_frame->document()->stopActiveDOMObjects();
detachFromParent();
}
void FrameLoader::detachFromParent()
{
RefPtr<Frame> protect(m_frame);
closeURL();
stopAllLoaders();
history()->saveScrollPositionAndViewStateToItem(history()->currentItem());
detachChildren();
#if ENABLE(INSPECTOR)
if (Page* page = m_frame->page())
page->inspectorController()->frameDetachedFromParent(m_frame);
#endif
detachViewsAndDocumentLoader();
if (Frame* parent = m_frame->tree()->parent()) {
parent->loader()->closeAndRemoveChild(m_frame);
parent->loader()->scheduleCheckCompleted();
} else {
m_frame->setView(0);
m_frame->pageDestroyed();
}
}
void FrameLoader::detachViewsAndDocumentLoader()
{
m_client->detachedFromParent2();
setDocumentLoader(0);
m_client->detachedFromParent3();
}
void FrameLoader::addExtraFieldsToSubresourceRequest(ResourceRequest& request)
{
addExtraFieldsToRequest(request, m_loadType, false, false);
}
void FrameLoader::addExtraFieldsToMainResourceRequest(ResourceRequest& request)
{
addExtraFieldsToRequest(request, m_loadType, true, false);
}
void FrameLoader::addExtraFieldsToRequest(ResourceRequest& request, FrameLoadType loadType, bool mainResource, bool cookiePolicyURLFromRequest)
{
// Don't set the cookie policy URL if it's already been set.
// But make sure to set it on all requests, as it has significance beyond the cookie policy for all protocols (<rdar://problem/6616664>).
if (request.firstPartyForCookies().isEmpty()) {
if (mainResource && (isLoadingMainFrame() || cookiePolicyURLFromRequest))
request.setFirstPartyForCookies(request.url());
else if (Document* document = m_frame->document())
request.setFirstPartyForCookies(document->firstPartyForCookies());
}
// The remaining modifications are only necessary for HTTP and HTTPS.
if (!request.url().isEmpty() && !request.url().protocolInHTTPFamily())
return;
applyUserAgent(request);
if (loadType == FrameLoadTypeReload) {
request.setCachePolicy(ReloadIgnoringCacheData);
request.setHTTPHeaderField("Cache-Control", "max-age=0");
} else if (loadType == FrameLoadTypeReloadFromOrigin) {
request.setCachePolicy(ReloadIgnoringCacheData);
request.setHTTPHeaderField("Cache-Control", "no-cache");
request.setHTTPHeaderField("Pragma", "no-cache");
} else if (isBackForwardLoadType(loadType) && !request.url().protocolIs("https"))
request.setCachePolicy(ReturnCacheDataElseLoad);
if (mainResource)
request.setHTTPAccept(defaultAcceptHeader);
// Make sure we send the Origin header.
addHTTPOriginIfNeeded(request, String());
// Always try UTF-8. If that fails, try frame encoding (if any) and then the default.
// For a newly opened frame with an empty URL, encoding() should not be used, because this methods asks decoder, which uses ISO-8859-1.
Settings* settings = m_frame->settings();
request.setResponseContentDispositionEncodingFallbackArray("UTF-8", m_URL.isEmpty() ? m_encoding : encoding(), settings ? settings->defaultTextEncodingName() : String());
}
void FrameLoader::addHTTPOriginIfNeeded(ResourceRequest& request, String origin)
{
if (!request.httpOrigin().isEmpty())
return; // Request already has an Origin header.
// Don't send an Origin header for GET or HEAD to avoid privacy issues.
// For example, if an intranet page has a hyperlink to an external web
// site, we don't want to include the Origin of the request because it
// will leak the internal host name. Similar privacy concerns have lead
// to the widespread suppression of the Referer header at the network
// layer.
if (request.httpMethod() == "GET" || request.httpMethod() == "HEAD")
return;
// For non-GET and non-HEAD methods, always send an Origin header so the
// server knows we support this feature.
if (origin.isEmpty()) {
// If we don't know what origin header to attach, we attach the value
// for an empty origin.
origin = SecurityOrigin::createEmpty()->toString();
}
request.setHTTPOrigin(origin);
}
void FrameLoader::committedLoad(DocumentLoader* loader, const char* data, int length)
{
#if ENABLE(ARCHIVE) // ANDROID extension: disabled to reduce code size
if (ArchiveFactory::isArchiveMimeType(loader->response().mimeType()))
return;
#endif
m_client->committedLoad(loader, data, length);
}
#ifdef ANDROID_USER_GESTURE
void FrameLoader::loadPostRequest(const ResourceRequest& inRequest, const String& referrer, const String& frameName, bool lockHistory, FrameLoadType loadType, PassRefPtr<Event> event, PassRefPtr<FormState> prpFormState, bool userGesture)
#else
void FrameLoader::loadPostRequest(const ResourceRequest& inRequest, const String& referrer, const String& frameName, bool lockHistory, FrameLoadType loadType, PassRefPtr<Event> event, PassRefPtr<FormState> prpFormState)
#endif
{
RefPtr<FormState> formState = prpFormState;
// When posting, use the NSURLRequestReloadIgnoringCacheData load flag.
// This prevents a potential bug which may cause a page with a form that uses itself
// as an action to be returned from the cache without submitting.
// FIXME: Where's the code that implements what the comment above says?
// Previously when this method was reached, the original FrameLoadRequest had been deconstructed to build a
// bunch of parameters that would come in here and then be built back up to a ResourceRequest. In case
// any caller depends on the immutability of the original ResourceRequest, I'm rebuilding a ResourceRequest
// from scratch as it did all along.
const KURL& url = inRequest.url();
RefPtr<FormData> formData = inRequest.httpBody();
const String& contentType = inRequest.httpContentType();
String origin = inRequest.httpOrigin();
ResourceRequest workingResourceRequest(url);
#ifdef ANDROID_USER_GESTURE
workingResourceRequest.setUserGesture(userGesture);
#endif
if (!referrer.isEmpty())
workingResourceRequest.setHTTPReferrer(referrer);
workingResourceRequest.setHTTPOrigin(origin);
workingResourceRequest.setHTTPMethod("POST");
workingResourceRequest.setHTTPBody(formData);
workingResourceRequest.setHTTPContentType(contentType);
addExtraFieldsToRequest(workingResourceRequest, loadType, true, true);
NavigationAction action(url, loadType, true, event);
if (!frameName.isEmpty()) {
// The search for a target frame is done earlier in the case of form submission.
if (Frame* targetFrame = formState ? 0 : findFrameForNavigation(frameName))
targetFrame->loader()->loadWithNavigationAction(workingResourceRequest, action, lockHistory, loadType, formState.release());
else
policyChecker()->checkNewWindowPolicy(action, FrameLoader::callContinueLoadAfterNewWindowPolicy, workingResourceRequest, formState.release(), frameName, this);
} else
loadWithNavigationAction(workingResourceRequest, action, lockHistory, loadType, formState.release());
}
unsigned long FrameLoader::loadResourceSynchronously(const ResourceRequest& request, StoredCredentials storedCredentials, ResourceError& error, ResourceResponse& response, Vector<char>& data)
{
String referrer = m_outgoingReferrer;
if (SecurityOrigin::shouldHideReferrer(request.url(), referrer))
referrer = String();
ResourceRequest initialRequest = request;
initialRequest.setTimeoutInterval(10);
// Use the original request's cache policy for two reasons:
// 1. For POST requests, we mutate the cache policy for the main resource,
// but we do not want this to apply to subresources
// 2. Delegates that modify the cache policy using willSendRequest: should
// not affect any other resources. Such changes need to be done
// per request.
if (initialRequest.isConditional())
initialRequest.setCachePolicy(ReloadIgnoringCacheData);
else
initialRequest.setCachePolicy(originalRequest().cachePolicy());
if (!referrer.isEmpty())
initialRequest.setHTTPReferrer(referrer);
addHTTPOriginIfNeeded(initialRequest, outgoingOrigin());
if (Page* page = m_frame->page())
initialRequest.setFirstPartyForCookies(page->mainFrame()->loader()->documentLoader()->request().url());
initialRequest.setHTTPUserAgent(client()->userAgent(request.url()));
unsigned long identifier = 0;
ResourceRequest newRequest(initialRequest);
requestFromDelegate(newRequest, identifier, error);
if (error.isNull()) {
ASSERT(!newRequest.isNull());
#if ENABLE(OFFLINE_WEB_APPLICATIONS)
if (!documentLoader()->applicationCacheHost()->maybeLoadSynchronously(newRequest, error, response, data)) {
#endif
ResourceHandle::loadResourceSynchronously(newRequest, storedCredentials, error, response, data, m_frame);
#if ENABLE(OFFLINE_WEB_APPLICATIONS)
documentLoader()->applicationCacheHost()->maybeLoadFallbackSynchronously(newRequest, error, response, data);
}
#endif
}
notifier()->sendRemainingDelegateMessages(m_documentLoader.get(), identifier, response, data.size(), error);
return identifier;
}
const ResourceRequest& FrameLoader::originalRequest() const
{
return activeDocumentLoader()->originalRequestCopy();
}
void FrameLoader::receivedMainResourceError(const ResourceError& error, bool isComplete)
{
// Retain because the stop may release the last reference to it.
RefPtr<Frame> protect(m_frame);
RefPtr<DocumentLoader> loader = activeDocumentLoader();
if (isComplete) {
// FIXME: Don't want to do this if an entirely new load is going, so should check
// that both data sources on the frame are either this or nil.
stop();
if (m_client->shouldFallBack(error))
handleFallbackContent();
}
if (m_state == FrameStateProvisional && m_provisionalDocumentLoader) {
if (m_submittedFormURL == m_provisionalDocumentLoader->originalRequestCopy().url())
m_submittedFormURL = KURL();
// We might have made a page cache item, but now we're bailing out due to an error before we ever
// transitioned to the new page (before WebFrameState == commit). The goal here is to restore any state
// so that the existing view (that wenever got far enough to replace) can continue being used.
history()->invalidateCurrentItemCachedPage();
// Call clientRedirectCancelledOrFinished here so that the frame load delegate is notified that the redirect's
// status has changed, if there was a redirect. The frame load delegate may have saved some state about
// the redirect in its -webView:willPerformClientRedirectToURL:delay:fireDate:forFrame:. Since we are definitely
// not going to use this provisional resource, as it was cancelled, notify the frame load delegate that the redirect
// has ended.
if (m_sentRedirectNotification)
clientRedirectCancelledOrFinished(false);
}
loader->mainReceivedError(error, isComplete);
}
void FrameLoader::callContinueFragmentScrollAfterNavigationPolicy(void* argument,
const ResourceRequest& request, PassRefPtr<FormState>, bool shouldContinue)
{
FrameLoader* loader = static_cast<FrameLoader*>(argument);
loader->continueFragmentScrollAfterNavigationPolicy(request, shouldContinue);
}
void FrameLoader::continueFragmentScrollAfterNavigationPolicy(const ResourceRequest& request, bool shouldContinue)
{
m_quickRedirectComing = false;
if (!shouldContinue)
return;
bool isRedirect = m_quickRedirectComing || policyChecker()->loadType() == FrameLoadTypeRedirectWithLockedBackForwardList;
loadInSameDocument(request.url(), 0, !isRedirect);
}
bool FrameLoader::shouldScrollToAnchor(bool isFormSubmission, FrameLoadType loadType, const KURL& url)
{
// Should we do anchor navigation within the existing content?
// We don't do this if we are submitting a form, explicitly reloading,
// currently displaying a frameset, or if the URL does not have a fragment.
// These rules were originally based on what KHTML was doing in KHTMLPart::openURL.
// FIXME: What about load types other than Standard and Reload?
return !isFormSubmission
&& loadType != FrameLoadTypeReload
&& loadType != FrameLoadTypeReloadFromOrigin
&& loadType != FrameLoadTypeSame
&& !shouldReload(this->url(), url)
// We don't want to just scroll if a link from within a
// frameset is trying to reload the frameset into _top.
&& !m_frame->document()->isFrameSet();
}
void FrameLoader::callContinueLoadAfterNavigationPolicy(void* argument,
const ResourceRequest& request, PassRefPtr<FormState> formState, bool shouldContinue)
{
FrameLoader* loader = static_cast<FrameLoader*>(argument);
loader->continueLoadAfterNavigationPolicy(request, formState, shouldContinue);
}
void FrameLoader::continueLoadAfterNavigationPolicy(const ResourceRequest&, PassRefPtr<FormState> formState, bool shouldContinue)
{
// If we loaded an alternate page to replace an unreachableURL, we'll get in here with a
// nil policyDataSource because loading the alternate page will have passed
// through this method already, nested; otherwise, policyDataSource should still be set.
ASSERT(m_policyDocumentLoader || !m_provisionalDocumentLoader->unreachableURL().isEmpty());
bool isTargetItem = history()->provisionalItem() ? history()->provisionalItem()->isTargetItem() : false;
// Two reasons we can't continue:
// 1) Navigation policy delegate said we can't so request is nil. A primary case of this
// is the user responding Cancel to the form repost nag sheet.
// 2) User responded Cancel to an alert popped up by the before unload event handler.
// The "before unload" event handler runs only for the main frame.
bool canContinue = shouldContinue && (!isLoadingMainFrame() || m_frame->shouldClose());
if (!canContinue) {
// If we were waiting for a quick redirect, but the policy delegate decided to ignore it, then we
// need to report that the client redirect was cancelled.
if (m_quickRedirectComing)
clientRedirectCancelledOrFinished(false);
setPolicyDocumentLoader(0);
// If the navigation request came from the back/forward menu, and we punt on it, we have the
// problem that we have optimistically moved the b/f cursor already, so move it back. For sanity,
// we only do this when punting a navigation for the target frame or top-level frame.
if ((isTargetItem || isLoadingMainFrame()) && isBackForwardLoadType(policyChecker()->loadType()))
if (Page* page = m_frame->page()) {
Frame* mainFrame = page->mainFrame();
if (HistoryItem* resetItem = mainFrame->loader()->history()->currentItem()) {
page->backForwardList()->goToItem(resetItem);
Settings* settings = m_frame->settings();
page->setGlobalHistoryItem((!settings || settings->privateBrowsingEnabled()) ? 0 : resetItem);
}
}
return;
}
FrameLoadType type = policyChecker()->loadType();
stopAllLoaders();
// <rdar://problem/6250856> - In certain circumstances on pages with multiple frames, stopAllLoaders()
// might detach the current FrameLoader, in which case we should bail on this newly defunct load.
if (!m_frame->page())
return;
#if ENABLE(JAVASCRIPT_DEBUGGER) && ENABLE(INSPECTOR) && USE(JSC)
if (Page* page = m_frame->page()) {
if (page->mainFrame() == m_frame)
page->inspectorController()->resumeDebugger();
}
#endif
setProvisionalDocumentLoader(m_policyDocumentLoader.get());
m_loadType = type;
setState(FrameStateProvisional);
setPolicyDocumentLoader(0);
if (isBackForwardLoadType(type) && loadProvisionalItemFromCachedPage())
return;
if (formState)
m_client->dispatchWillSubmitForm(&PolicyChecker::continueLoadAfterWillSubmitForm, formState);
else
continueLoadAfterWillSubmitForm();
}
void FrameLoader::callContinueLoadAfterNewWindowPolicy(void* argument,
const ResourceRequest& request, PassRefPtr<FormState> formState, const String& frameName, bool shouldContinue)
{
FrameLoader* loader = static_cast<FrameLoader*>(argument);
loader->continueLoadAfterNewWindowPolicy(request, formState, frameName, shouldContinue);
}
void FrameLoader::continueLoadAfterNewWindowPolicy(const ResourceRequest& request,
PassRefPtr<FormState> formState, const String& frameName, bool shouldContinue)
{
if (!shouldContinue)
return;
RefPtr<Frame> frame = m_frame;
RefPtr<Frame> mainFrame = m_client->dispatchCreatePage();
if (!mainFrame)
return;
if (frameName != "_blank")
mainFrame->tree()->setName(frameName);
mainFrame->page()->setOpenedByDOM();
mainFrame->loader()->m_client->dispatchShow();
if (!m_suppressOpenerInNewFrame)
mainFrame->loader()->setOpener(frame.get());
mainFrame->loader()->loadWithNavigationAction(request, NavigationAction(), false, FrameLoadTypeStandard, formState);
}
void FrameLoader::requestFromDelegate(ResourceRequest& request, unsigned long& identifier, ResourceError& error)
{
ASSERT(!request.isNull());
identifier = 0;
if (Page* page = m_frame->page()) {
identifier = page->progress()->createUniqueIdentifier();
notifier()->assignIdentifierToInitialRequest(identifier, m_documentLoader.get(), request);
}
ResourceRequest newRequest(request);
notifier()->dispatchWillSendRequest(m_documentLoader.get(), identifier, newRequest, ResourceResponse());
if (newRequest.isNull())
error = cancelledError(request);
else
error = ResourceError();
request = newRequest;
}
void FrameLoader::loadedResourceFromMemoryCache(const CachedResource* resource)
{
Page* page = m_frame->page();
if (!page)
return;
#if ENABLE(INSPECTOR)
page->inspectorController()->didLoadResourceFromMemoryCache(m_documentLoader.get(), resource);
#endif
if (!resource->sendResourceLoadCallbacks() || m_documentLoader->haveToldClientAboutLoad(resource->url()))
return;
if (!page->areMemoryCacheClientCallsEnabled()) {
m_documentLoader->recordMemoryCacheLoadForFutureClientNotification(resource->url());
m_documentLoader->didTellClientAboutLoad(resource->url());
return;
}
ResourceRequest request(resource->url());
if (m_client->dispatchDidLoadResourceFromMemoryCache(m_documentLoader.get(), request, resource->response(), resource->encodedSize())) {
m_documentLoader->didTellClientAboutLoad(resource->url());
return;
}
unsigned long identifier;
ResourceError error;
requestFromDelegate(request, identifier, error);
notifier()->sendRemainingDelegateMessages(m_documentLoader.get(), identifier, resource->response(), resource->encodedSize(), error);
}
void FrameLoader::applyUserAgent(ResourceRequest& request)
{
String userAgent = client()->userAgent(request.url());
ASSERT(!userAgent.isNull());
request.setHTTPUserAgent(userAgent);
}
bool FrameLoader::shouldInterruptLoadForXFrameOptions(const String& content, const KURL& url)
{
Frame* topFrame = m_frame->tree()->top();
if (m_frame == topFrame)
return false;
if (equalIgnoringCase(content, "deny"))
return true;
if (equalIgnoringCase(content, "sameorigin")) {
RefPtr<SecurityOrigin> origin = SecurityOrigin::create(url);
if (!origin->isSameSchemeHostPort(topFrame->document()->securityOrigin()))
return true;
}
return false;
}
bool FrameLoader::loadProvisionalItemFromCachedPage()
{
RefPtr<CachedPage> cachedPage = pageCache()->get(history()->provisionalItem());
if (!cachedPage || !cachedPage->document())
return false;
DocumentLoader *provisionalLoader = provisionalDocumentLoader();
LOG(PageCache, "WebCorePageCache: FrameLoader %p loading provisional DocumentLoader %p with URL '%s' from CachedPage %p", this, provisionalLoader, provisionalLoader->url().string().utf8().data(), cachedPage.get());
provisionalLoader->prepareForLoadStart();
m_loadingFromCachedPage = true;
provisionalLoader->setCommitted(true);
commitProvisionalLoad(cachedPage);
return true;
}
void FrameLoader::cachePageForHistoryItem(HistoryItem* item)
{
if (!canCachePage() || item->isInPageCache())
return;
pageHidden();
if (Page* page = m_frame->page()) {
RefPtr<CachedPage> cachedPage = CachedPage::create(page);
pageCache()->add(item, cachedPage.release());
}
}
void FrameLoader::pageHidden()
{
m_unloadEventBeingDispatched = true;
if (m_frame->domWindow())
m_frame->domWindow()->dispatchEvent(PageTransitionEvent::create(eventNames().pagehideEvent, true), m_frame->document());
m_unloadEventBeingDispatched = false;
// Send pagehide event for subframes as well
for (Frame* child = m_frame->tree()->firstChild(); child; child = child->tree()->nextSibling())
child->loader()->pageHidden();
}
bool FrameLoader::shouldTreatURLAsSameAsCurrent(const KURL& url) const
{
if (!history()->currentItem())
return false;
return url == history()->currentItem()->url() || url == history()->currentItem()->originalURL();
}
void FrameLoader::checkDidPerformFirstNavigation()
{
Page* page = m_frame->page();
if (!page)
return;
if (!m_didPerformFirstNavigation && page->backForwardList()->entries().size() == 1) {
m_didPerformFirstNavigation = true;
m_client->didPerformFirstNavigation();
}
}
Frame* FrameLoader::findFrameForNavigation(const AtomicString& name)
{
Frame* frame = m_frame->tree()->find(name);
if (!shouldAllowNavigation(frame))
return 0;
return frame;
}
void FrameLoader::navigateWithinDocument(HistoryItem* item)
{
ASSERT(item->documentSequenceNumber() == history()->currentItem()->documentSequenceNumber());
// Save user view state to the current history item here since we don't do a normal load.
// FIXME: Does form state need to be saved here too?
history()->saveScrollPositionAndViewStateToItem(history()->currentItem());
if (FrameView* view = m_frame->view())
view->setWasScrolledByUser(false);
history()->setCurrentItem(item);
// loadInSameDocument() actually changes the URL and notifies load delegates of a "fake" load
loadInSameDocument(item->url(), item->stateObject(), false);
// Restore user view state from the current history item here since we don't do a normal load.
history()->restoreScrollPositionAndViewState();
}
// FIXME: This function should really be split into a couple pieces, some of
// which should be methods of HistoryController and some of which should be
// methods of FrameLoader.
void FrameLoader::navigateToDifferentDocument(HistoryItem* item, FrameLoadType loadType)
{
// Remember this item so we can traverse any child items as child frames load
history()->setProvisionalItem(item);
// Check if we'll be using the page cache. We only use the page cache
// if one exists and it is less than _backForwardCacheExpirationInterval
// seconds old. If the cache is expired it gets flushed here.
if (RefPtr<CachedPage> cachedPage = pageCache()->get(item)) {
// FIXME: 1800 should not be hardcoded, it should come from
// WebKitBackForwardCacheExpirationIntervalKey in WebKit.
// Or we should remove WebKitBackForwardCacheExpirationIntervalKey.
if (currentTime() - cachedPage->timeStamp() <= 1800) {
loadWithDocumentLoader(cachedPage->documentLoader(), loadType, 0);
return;
}
LOG(PageCache, "Not restoring page for %s from back/forward cache because cache entry has expired", history()->provisionalItem()->url().string().ascii().data());
pageCache()->remove(item);
}
KURL itemURL = item->url();
KURL itemOriginalURL = item->originalURL();
KURL currentURL;
if (documentLoader())
currentURL = documentLoader()->url();
RefPtr<FormData> formData = item->formData();
bool addedExtraFields = false;
ResourceRequest request(itemURL);
if (!item->referrer().isNull())
request.setHTTPReferrer(item->referrer());
// If this was a repost that failed the page cache, we might try to repost the form.
NavigationAction action;
if (formData) {
formData->generateFiles(m_frame->page()->chrome()->client());
request.setHTTPMethod("POST");
request.setHTTPBody(formData);
request.setHTTPContentType(item->formContentType());
RefPtr<SecurityOrigin> securityOrigin = SecurityOrigin::createFromString(item->referrer());
addHTTPOriginIfNeeded(request, securityOrigin->toString());
// Make sure to add extra fields to the request after the Origin header is added for the FormData case.
// See https://bugs.webkit.org/show_bug.cgi?id=22194 for more discussion.
addExtraFieldsToRequest(request, m_loadType, true, formData);
addedExtraFields = true;
// FIXME: Slight hack to test if the NSURL cache contains the page we're going to.
// We want to know this before talking to the policy delegate, since it affects whether
// we show the DoYouReallyWantToRepost nag.
//
// This trick has a small bug (3123893) where we might find a cache hit, but then
// have the item vanish when we try to use it in the ensuing nav. This should be
// extremely rare, but in that case the user will get an error on the navigation.
if (ResourceHandle::willLoadFromCache(request, m_frame))
action = NavigationAction(itemURL, loadType, false);
else {
request.setCachePolicy(ReloadIgnoringCacheData);
action = NavigationAction(itemURL, NavigationTypeFormResubmitted);
}
} else {
switch (loadType) {
case FrameLoadTypeReload:
case FrameLoadTypeReloadFromOrigin:
request.setCachePolicy(ReloadIgnoringCacheData);
break;
case FrameLoadTypeBack:
case FrameLoadTypeBackWMLDeckNotAccessible:
case FrameLoadTypeForward:
case FrameLoadTypeIndexedBackForward:
if (!itemURL.protocolIs("https"))
request.setCachePolicy(ReturnCacheDataElseLoad);
break;
case FrameLoadTypeStandard:
case FrameLoadTypeRedirectWithLockedBackForwardList:
break;
case FrameLoadTypeSame:
default:
ASSERT_NOT_REACHED();
}
action = NavigationAction(itemOriginalURL, loadType, false);
}
if (!addedExtraFields)
addExtraFieldsToRequest(request, m_loadType, true, formData);
loadWithNavigationAction(request, action, false, loadType, 0);
}
// Loads content into this frame, as specified by history item
void FrameLoader::loadItem(HistoryItem* item, FrameLoadType loadType)
{
// We do same-document navigation in the following cases:
// - The HistoryItem has a history state object
// - Navigating to an anchor within the page, with no form data stored on the target item or the current history entry,
// and the URLs in the frame tree match the history item for fragment scrolling.
HistoryItem* currentItem = history()->currentItem();
bool sameDocumentNavigation = (!item->formData() && !(currentItem && currentItem->formData()) && history()->urlsMatchItem(item))
|| (currentItem && item->documentSequenceNumber() == currentItem->documentSequenceNumber());
#if ENABLE(WML)
// All WML decks should go through the real load mechanism, not the scroll-to-anchor code
// FIXME: Why do WML decks have this different behavior?
// Are WML decks incompatible with HTML5 pushState/replaceState which require inter-document history navigations?
// Should this new API be disabled for WML pages, or does WML need to update their mechanism to act like normal loads?
// If scroll-to-anchor navigations were broken for WML and required them to have different loading behavior, then
// state object loads are certainly also broken for them.
if (frameContainsWMLContent(m_frame))
sameDocumentNavigation = false;
#endif
if (sameDocumentNavigation)
navigateWithinDocument(item);
else
navigateToDifferentDocument(item, loadType);
}
void FrameLoader::setMainDocumentError(DocumentLoader* loader, const ResourceError& error)
{
m_client->setMainDocumentError(loader, error);
}
void FrameLoader::mainReceivedCompleteError(DocumentLoader* loader, const ResourceError&)
{
loader->setPrimaryLoadComplete(true);
m_client->dispatchDidLoadMainResource(activeDocumentLoader());
checkCompleted();
if (m_frame->page())
checkLoadComplete();
}
void FrameLoader::mainReceivedError(const ResourceError& error, bool isComplete)
{
activeDocumentLoader()->mainReceivedError(error, isComplete);
}
ResourceError FrameLoader::cancelledError(const ResourceRequest& request) const
{
ResourceError error = m_client->cancelledError(request);
error.setIsCancellation(true);
return error;
}
ResourceError FrameLoader::blockedError(const ResourceRequest& request) const
{
return m_client->blockedError(request);
}
ResourceError FrameLoader::cannotShowURLError(const ResourceRequest& request) const
{
return m_client->cannotShowURLError(request);
}
ResourceError FrameLoader::fileDoesNotExistError(const ResourceResponse& response) const
{
return m_client->fileDoesNotExistError(response);
}
bool FrameLoader::shouldUseCredentialStorage(ResourceLoader* loader)
{
return m_client->shouldUseCredentialStorage(loader->documentLoader(), loader->identifier());
}
void FrameLoader::setTitle(const String& title)
{
documentLoader()->setTitle(title);
}
KURL FrameLoader::originalRequestURL() const
{
return activeDocumentLoader()->originalRequest().url();
}
String FrameLoader::referrer() const
{
return documentLoader()->request().httpReferrer();
}
void FrameLoader::dispatchDocumentElementAvailable()
{
m_frame->injectUserScripts(InjectAtDocumentStart);
m_client->documentElementAvailable();
}
void FrameLoader::dispatchDidClearWindowObjectsInAllWorlds()
{
if (!m_frame->script()->canExecuteScripts())
return;
Vector<DOMWrapperWorld*> worlds;
ScriptController::getAllWorlds(worlds);
for (size_t i = 0; i < worlds.size(); ++i)
dispatchDidClearWindowObjectInWorld(worlds[i]);
}
void FrameLoader::dispatchDidClearWindowObjectInWorld(DOMWrapperWorld* world)
{
if (!m_frame->script()->canExecuteScripts() || !m_frame->script()->existingWindowShell(world))
return;
m_client->dispatchDidClearWindowObjectInWorld(world);
#if ENABLE(INSPECTOR)
if (world != mainThreadNormalWorld())
return;
if (Page* page = m_frame->page()) {
if (InspectorController* inspector = page->inspectorController())
inspector->inspectedWindowScriptObjectCleared(m_frame);
if (InspectorController* inspector = page->parentInspectorController())
inspector->windowScriptObjectAvailable();
}
#endif
}
void FrameLoader::updateSandboxFlags()
{
SandboxFlags flags = SandboxNone;
if (Frame* parentFrame = m_frame->tree()->parent())
flags |= parentFrame->loader()->sandboxFlags();
if (HTMLFrameOwnerElement* ownerElement = m_frame->ownerElement())
flags |= ownerElement->sandboxFlags();
if (m_sandboxFlags == flags)
return;
m_sandboxFlags = flags;
for (Frame* child = m_frame->tree()->firstChild(); child; child = child->tree()->nextSibling())
child->loader()->updateSandboxFlags();
}
bool FrameLoader::isDocumentSandboxed(SandboxFlags mask) const
{
return m_frame->document() && m_frame->document()->securityOrigin()->isSandboxed(mask);
}
PassRefPtr<Widget> FrameLoader::createJavaAppletWidget(const IntSize& size, HTMLAppletElement* element, const HashMap<String, String>& args)
{
String baseURLString;
String codeBaseURLString;
Vector<String> paramNames;
Vector<String> paramValues;
HashMap<String, String>::const_iterator end = args.end();
for (HashMap<String, String>::const_iterator it = args.begin(); it != end; ++it) {
if (equalIgnoringCase(it->first, "baseurl"))
baseURLString = it->second;
else if (equalIgnoringCase(it->first, "codebase"))
codeBaseURLString = it->second;
paramNames.append(it->first);
paramValues.append(it->second);
}
if (!codeBaseURLString.isEmpty()) {
KURL codeBaseURL = completeURL(codeBaseURLString);
if (!SecurityOrigin::canLoad(codeBaseURL, String(), element->document())) {
FrameLoader::reportLocalLoadFailed(m_frame, codeBaseURL.string());
return 0;
}
}
if (baseURLString.isEmpty())
baseURLString = m_frame->document()->baseURL().string();
KURL baseURL = completeURL(baseURLString);
RefPtr<Widget> widget = m_client->createJavaAppletWidget(size, element, baseURL, paramNames, paramValues);
if (!widget)
return 0;
m_containsPlugIns = true;
return widget;
}
void FrameLoader::didChangeTitle(DocumentLoader* loader)
{
m_client->didChangeTitle(loader);
if (loader == m_documentLoader) {
// Must update the entries in the back-forward list too.
history()->setCurrentItemTitle(loader->title());
// This must go through the WebFrame because it has the right notion of the current b/f item.
m_client->setTitle(loader->title(), loader->urlForHistory());
m_client->setMainFrameDocumentReady(true); // update observers with new DOMDocument
m_client->dispatchDidReceiveTitle(loader->title());
}
}
void FrameLoader::dispatchDidCommitLoad()
{
if (m_creatingInitialEmptyDocument)
return;
#ifndef NDEBUG
m_didDispatchDidCommitLoad = true;
#endif
m_client->dispatchDidCommitLoad();
#if ENABLE(INSPECTOR)
if (Page* page = m_frame->page())
page->inspectorController()->didCommitLoad(m_documentLoader.get());
#endif
}
void FrameLoader::tellClientAboutPastMemoryCacheLoads()
{
ASSERT(m_frame->page());
ASSERT(m_frame->page()->areMemoryCacheClientCallsEnabled());
if (!m_documentLoader)
return;
Vector<String> pastLoads;
m_documentLoader->takeMemoryCacheLoadsForClientNotification(pastLoads);
size_t size = pastLoads.size();
for (size_t i = 0; i < size; ++i) {
CachedResource* resource = cache()->resourceForURL(pastLoads[i]);
// FIXME: These loads, loaded from cache, but now gone from the cache by the time
// Page::setMemoryCacheClientCallsEnabled(true) is called, will not be seen by the client.
// Consider if there's some efficient way of remembering enough to deliver this client call.
// We have the URL, but not the rest of the response or the length.
if (!resource)
continue;
ResourceRequest request(resource->url());
m_client->dispatchDidLoadResourceFromMemoryCache(m_documentLoader.get(), request, resource->response(), resource->encodedSize());
}
}
bool FrameLoaderClient::hasHTMLView() const
{
return true;
}
} // namespace WebCore