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<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/245347">245347</a></dd>
<dt>Author</dt> <dd>alancoon@apple.com</dd>
<dt>Date</dt> <dd>2019-05-15 14:44:39 -0700 (Wed, 15 May 2019)</dd>
</dl>
<h3>Log Message</h3>
<pre>Cherry-pick <a href="http://trac.webkit.org/projects/webkit/changeset/243820">r243820</a>. rdar://problem/50753921
Crash in HTMLCanvasElement::createContext2d after the element got adopted to a new document
https://bugs.webkit.org/show_bug.cgi?id=196527
Reviewed by Antti Koivisto.
We need to update CanvasBase::m_scriptExecutionContext when HTMLCanvasElement moves from
one document to another. Fixed the bug by making CanvasBase::scriptExecutionContext make
a virtual function call instead of directly storing a raw pointer. In HTMLCanvasElement,
we use Node::scriptExecutionContext(). Use ContextDestructionObserver in CustomPaintCanvas
and OffscreenCanvas instead of a raw pointer.
Unfortunately, no new tests since there is no reproducible test case.
* html/CanvasBase.cpp:
(WebCore::CanvasBase::CanvasBase):
* html/CanvasBase.h:
(WebCore::CanvasBase::scriptExecutionContext const):
* html/CustomPaintCanvas.cpp:
(WebCore::CustomPaintCanvas::CustomPaintCanvas):
* html/CustomPaintCanvas.h:
* html/HTMLCanvasElement.cpp:
(WebCore::HTMLCanvasElement::HTMLCanvasElement):
* html/HTMLCanvasElement.h:
* html/OffscreenCanvas.cpp:
(WebCore::OffscreenCanvas::OffscreenCanvas):
* html/OffscreenCanvas.h:
git-svn-id: https://svn.webkit.org/repository/webkit/trunk@243820 268f45cc-cd09-0410-ab3c-d52691b4dbfc</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#branchessafari607branchSourceWebCoreChangeLog">branches/safari-607-branch/Source/WebCore/ChangeLog</a></li>
<li><a href="#branchessafari607branchSourceWebCorehtmlCanvasBasecpp">branches/safari-607-branch/Source/WebCore/html/CanvasBase.cpp</a></li>
<li><a href="#branchessafari607branchSourceWebCorehtmlCanvasBaseh">branches/safari-607-branch/Source/WebCore/html/CanvasBase.h</a></li>
<li><a href="#branchessafari607branchSourceWebCorehtmlCustomPaintCanvascpp">branches/safari-607-branch/Source/WebCore/html/CustomPaintCanvas.cpp</a></li>
<li><a href="#branchessafari607branchSourceWebCorehtmlCustomPaintCanvash">branches/safari-607-branch/Source/WebCore/html/CustomPaintCanvas.h</a></li>
<li><a href="#branchessafari607branchSourceWebCorehtmlHTMLCanvasElementcpp">branches/safari-607-branch/Source/WebCore/html/HTMLCanvasElement.cpp</a></li>
<li><a href="#branchessafari607branchSourceWebCorehtmlHTMLCanvasElementh">branches/safari-607-branch/Source/WebCore/html/HTMLCanvasElement.h</a></li>
<li><a href="#branchessafari607branchSourceWebCorehtmlOffscreenCanvascpp">branches/safari-607-branch/Source/WebCore/html/OffscreenCanvas.cpp</a></li>
<li><a href="#branchessafari607branchSourceWebCorehtmlOffscreenCanvash">branches/safari-607-branch/Source/WebCore/html/OffscreenCanvas.h</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="branchessafari607branchSourceWebCoreChangeLog"></a>
<div class="modfile"><h4>Modified: branches/safari-607-branch/Source/WebCore/ChangeLog (245346 => 245347)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-607-branch/Source/WebCore/ChangeLog 2019-05-15 21:44:36 UTC (rev 245346)
+++ branches/safari-607-branch/Source/WebCore/ChangeLog 2019-05-15 21:44:39 UTC (rev 245347)
</span><span class="lines">@@ -1,5 +1,68 @@
</span><span class="cx"> 2019-05-14 Kocsen Chung <kocsen_chung@apple.com>
</span><span class="cx">
</span><ins>+ Cherry-pick r243820. rdar://problem/50753921
+
+ Crash in HTMLCanvasElement::createContext2d after the element got adopted to a new document
+ https://bugs.webkit.org/show_bug.cgi?id=196527
+
+ Reviewed by Antti Koivisto.
+
+ We need to update CanvasBase::m_scriptExecutionContext when HTMLCanvasElement moves from
+ one document to another. Fixed the bug by making CanvasBase::scriptExecutionContext make
+ a virtual function call instead of directly storing a raw pointer. In HTMLCanvasElement,
+ we use Node::scriptExecutionContext(). Use ContextDestructionObserver in CustomPaintCanvas
+ and OffscreenCanvas instead of a raw pointer.
+
+ Unfortunately, no new tests since there is no reproducible test case.
+
+ * html/CanvasBase.cpp:
+ (WebCore::CanvasBase::CanvasBase):
+ * html/CanvasBase.h:
+ (WebCore::CanvasBase::scriptExecutionContext const):
+ * html/CustomPaintCanvas.cpp:
+ (WebCore::CustomPaintCanvas::CustomPaintCanvas):
+ * html/CustomPaintCanvas.h:
+ * html/HTMLCanvasElement.cpp:
+ (WebCore::HTMLCanvasElement::HTMLCanvasElement):
+ * html/HTMLCanvasElement.h:
+ * html/OffscreenCanvas.cpp:
+ (WebCore::OffscreenCanvas::OffscreenCanvas):
+ * html/OffscreenCanvas.h:
+
+
+ git-svn-id: https://svn.webkit.org/repository/webkit/trunk@243820 268f45cc-cd09-0410-ab3c-d52691b4dbfc
+
+ 2019-04-02 Ryosuke Niwa <rniwa@webkit.org>
+
+ Crash in HTMLCanvasElement::createContext2d after the element got adopted to a new document
+ https://bugs.webkit.org/show_bug.cgi?id=196527
+
+ Reviewed by Antti Koivisto.
+
+ We need to update CanvasBase::m_scriptExecutionContext when HTMLCanvasElement moves from
+ one document to another. Fixed the bug by making CanvasBase::scriptExecutionContext make
+ a virtual function call instead of directly storing a raw pointer. In HTMLCanvasElement,
+ we use Node::scriptExecutionContext(). Use ContextDestructionObserver in CustomPaintCanvas
+ and OffscreenCanvas instead of a raw pointer.
+
+ Unfortunately, no new tests since there is no reproducible test case.
+
+ * html/CanvasBase.cpp:
+ (WebCore::CanvasBase::CanvasBase):
+ * html/CanvasBase.h:
+ (WebCore::CanvasBase::scriptExecutionContext const):
+ * html/CustomPaintCanvas.cpp:
+ (WebCore::CustomPaintCanvas::CustomPaintCanvas):
+ * html/CustomPaintCanvas.h:
+ * html/HTMLCanvasElement.cpp:
+ (WebCore::HTMLCanvasElement::HTMLCanvasElement):
+ * html/HTMLCanvasElement.h:
+ * html/OffscreenCanvas.cpp:
+ (WebCore::OffscreenCanvas::OffscreenCanvas):
+ * html/OffscreenCanvas.h:
+
+2019-05-14 Kocsen Chung <kocsen_chung@apple.com>
+
</ins><span class="cx"> Cherry-pick r239742. rdar://problem/50753925
</span><span class="cx">
</span><span class="cx"> Prevent cross-site top-level navigations from third-party iframes
</span></span></pre></div>
<a id="branchessafari607branchSourceWebCorehtmlCanvasBasecpp"></a>
<div class="modfile"><h4>Modified: branches/safari-607-branch/Source/WebCore/html/CanvasBase.cpp (245346 => 245347)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-607-branch/Source/WebCore/html/CanvasBase.cpp 2019-05-15 21:44:36 UTC (rev 245346)
+++ branches/safari-607-branch/Source/WebCore/html/CanvasBase.cpp 2019-05-15 21:44:39 UTC (rev 245347)
</span><span class="lines">@@ -34,8 +34,7 @@
</span><span class="cx">
</span><span class="cx"> namespace WebCore {
</span><span class="cx">
</span><del>-CanvasBase::CanvasBase(ScriptExecutionContext* scriptExecutionContext)
- : m_scriptExecutionContext(scriptExecutionContext)
</del><ins>+CanvasBase::CanvasBase()
</ins><span class="cx"> {
</span><span class="cx"> }
</span><span class="cx">
</span></span></pre></div>
<a id="branchessafari607branchSourceWebCorehtmlCanvasBaseh"></a>
<div class="modfile"><h4>Modified: branches/safari-607-branch/Source/WebCore/html/CanvasBase.h (245346 => 245347)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-607-branch/Source/WebCore/html/CanvasBase.h 2019-05-15 21:44:36 UTC (rev 245346)
+++ branches/safari-607-branch/Source/WebCore/html/CanvasBase.h 2019-05-15 21:44:39 UTC (rev 245347)
</span><span class="lines">@@ -74,7 +74,7 @@
</span><span class="cx"> bool originClean() const { return m_originClean; }
</span><span class="cx">
</span><span class="cx"> virtual SecurityOrigin* securityOrigin() const { return nullptr; }
</span><del>- ScriptExecutionContext* scriptExecutionContext() const { return m_scriptExecutionContext; }
</del><ins>+ ScriptExecutionContext* scriptExecutionContext() const { return canvasBaseScriptExecutionContext(); }
</ins><span class="cx">
</span><span class="cx"> CanvasRenderingContext* renderingContext() const;
</span><span class="cx">
</span><span class="lines">@@ -98,8 +98,10 @@
</span><span class="cx"> bool callTracingActive() const;
</span><span class="cx">
</span><span class="cx"> protected:
</span><del>- CanvasBase(ScriptExecutionContext*);
</del><ins>+ CanvasBase();
</ins><span class="cx">
</span><ins>+ virtual ScriptExecutionContext* canvasBaseScriptExecutionContext() const = 0;
+
</ins><span class="cx"> std::unique_ptr<CanvasRenderingContext> m_context;
</span><span class="cx">
</span><span class="cx"> private:
</span><span class="lines">@@ -107,7 +109,6 @@
</span><span class="cx"> #ifndef NDEBUG
</span><span class="cx"> bool m_didNotifyObserversCanvasDestroyed { false };
</span><span class="cx"> #endif
</span><del>- ScriptExecutionContext* m_scriptExecutionContext;
</del><span class="cx"> HashSet<CanvasObserver*> m_observers;
</span><span class="cx"> };
</span><span class="cx">
</span></span></pre></div>
<a id="branchessafari607branchSourceWebCorehtmlCustomPaintCanvascpp"></a>
<div class="modfile"><h4>Modified: branches/safari-607-branch/Source/WebCore/html/CustomPaintCanvas.cpp (245346 => 245347)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-607-branch/Source/WebCore/html/CustomPaintCanvas.cpp 2019-05-15 21:44:36 UTC (rev 245346)
+++ branches/safari-607-branch/Source/WebCore/html/CustomPaintCanvas.cpp 2019-05-15 21:44:39 UTC (rev 245347)
</span><span class="lines">@@ -39,7 +39,7 @@
</span><span class="cx"> }
</span><span class="cx">
</span><span class="cx"> CustomPaintCanvas::CustomPaintCanvas(ScriptExecutionContext& context, unsigned width, unsigned height)
</span><del>- : CanvasBase(&context)
</del><ins>+ : ContextDestructionObserver(&context)
</ins><span class="cx"> , m_size(width, height)
</span><span class="cx"> {
</span><span class="cx"> }
</span></span></pre></div>
<a id="branchessafari607branchSourceWebCorehtmlCustomPaintCanvash"></a>
<div class="modfile"><h4>Modified: branches/safari-607-branch/Source/WebCore/html/CustomPaintCanvas.h (245346 => 245347)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-607-branch/Source/WebCore/html/CustomPaintCanvas.h 2019-05-15 21:44:36 UTC (rev 245346)
+++ branches/safari-607-branch/Source/WebCore/html/CustomPaintCanvas.h 2019-05-15 21:44:39 UTC (rev 245347)
</span><span class="lines">@@ -44,7 +44,7 @@
</span><span class="cx"> class ImageBitmap;
</span><span class="cx"> class PaintRenderingContext2D;
</span><span class="cx">
</span><del>-class CustomPaintCanvas final : public RefCounted<CustomPaintCanvas>, public CanvasBase {
</del><ins>+class CustomPaintCanvas final : public RefCounted<CustomPaintCanvas>, public CanvasBase, private ContextDestructionObserver {
</ins><span class="cx"> WTF_MAKE_FAST_ALLOCATED;
</span><span class="cx"> public:
</span><span class="cx">
</span><span class="lines">@@ -80,6 +80,7 @@
</span><span class="cx">
</span><span class="cx"> void refCanvasBase() final { ref(); }
</span><span class="cx"> void derefCanvasBase() final { deref(); }
</span><ins>+ ScriptExecutionContext* canvasBaseScriptExecutionContext() const final { return ContextDestructionObserver::scriptExecutionContext(); }
</ins><span class="cx">
</span><span class="cx"> mutable GraphicsContext* m_destinationGraphicsContext = nullptr;
</span><span class="cx"> mutable IntSize m_size;
</span></span></pre></div>
<a id="branchessafari607branchSourceWebCorehtmlHTMLCanvasElementcpp"></a>
<div class="modfile"><h4>Modified: branches/safari-607-branch/Source/WebCore/html/HTMLCanvasElement.cpp (245346 => 245347)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-607-branch/Source/WebCore/html/HTMLCanvasElement.cpp 2019-05-15 21:44:36 UTC (rev 245346)
+++ branches/safari-607-branch/Source/WebCore/html/HTMLCanvasElement.cpp 2019-05-15 21:44:39 UTC (rev 245347)
</span><span class="lines">@@ -120,7 +120,6 @@
</span><span class="cx">
</span><span class="cx"> HTMLCanvasElement::HTMLCanvasElement(const QualifiedName& tagName, Document& document)
</span><span class="cx"> : HTMLElement(tagName, document)
</span><del>- , CanvasBase(&document)
</del><span class="cx"> , m_size(defaultWidth, defaultHeight)
</span><span class="cx"> {
</span><span class="cx"> ASSERT(hasTagName(canvasTag));
</span></span></pre></div>
<a id="branchessafari607branchSourceWebCorehtmlHTMLCanvasElementh"></a>
<div class="modfile"><h4>Modified: branches/safari-607-branch/Source/WebCore/html/HTMLCanvasElement.h (245346 => 245347)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-607-branch/Source/WebCore/html/HTMLCanvasElement.h 2019-05-15 21:44:36 UTC (rev 245346)
+++ branches/safari-607-branch/Source/WebCore/html/HTMLCanvasElement.h 2019-05-15 21:44:39 UTC (rev 245347)
</span><span class="lines">@@ -185,6 +185,8 @@
</span><span class="cx"> void refCanvasBase() final { HTMLElement::ref(); }
</span><span class="cx"> void derefCanvasBase() final { HTMLElement::deref(); }
</span><span class="cx">
</span><ins>+ ScriptExecutionContext* canvasBaseScriptExecutionContext() const final { return HTMLElement::scriptExecutionContext(); }
+
</ins><span class="cx"> FloatRect m_dirtyRect;
</span><span class="cx"> mutable IntSize m_size;
</span><span class="cx">
</span></span></pre></div>
<a id="branchessafari607branchSourceWebCorehtmlOffscreenCanvascpp"></a>
<div class="modfile"><h4>Modified: branches/safari-607-branch/Source/WebCore/html/OffscreenCanvas.cpp (245346 => 245347)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-607-branch/Source/WebCore/html/OffscreenCanvas.cpp 2019-05-15 21:44:36 UTC (rev 245346)
+++ branches/safari-607-branch/Source/WebCore/html/OffscreenCanvas.cpp 2019-05-15 21:44:39 UTC (rev 245347)
</span><span class="lines">@@ -38,7 +38,7 @@
</span><span class="cx"> }
</span><span class="cx">
</span><span class="cx"> OffscreenCanvas::OffscreenCanvas(ScriptExecutionContext& context, unsigned width, unsigned height)
</span><del>- : CanvasBase(&context)
</del><ins>+ : ContextDestructionObserver(&context)
</ins><span class="cx"> , m_size(width, height)
</span><span class="cx"> {
</span><span class="cx"> }
</span></span></pre></div>
<a id="branchessafari607branchSourceWebCorehtmlOffscreenCanvash"></a>
<div class="modfile"><h4>Modified: branches/safari-607-branch/Source/WebCore/html/OffscreenCanvas.h (245346 => 245347)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-607-branch/Source/WebCore/html/OffscreenCanvas.h 2019-05-15 21:44:36 UTC (rev 245346)
+++ branches/safari-607-branch/Source/WebCore/html/OffscreenCanvas.h 2019-05-15 21:44:39 UTC (rev 245347)
</span><span class="lines">@@ -45,7 +45,7 @@
</span><span class="cx"> using OffscreenRenderingContext = RefPtr<WebGLRenderingContext>;
</span><span class="cx"> #endif
</span><span class="cx">
</span><del>-class OffscreenCanvas final : public RefCounted<OffscreenCanvas>, public CanvasBase, public EventTargetWithInlineData {
</del><ins>+class OffscreenCanvas final : public RefCounted<OffscreenCanvas>, public CanvasBase, public EventTargetWithInlineData, private ContextDestructionObserver {
</ins><span class="cx"> WTF_MAKE_FAST_ALLOCATED;
</span><span class="cx"> public:
</span><span class="cx">
</span><span class="lines">@@ -94,7 +94,8 @@
</span><span class="cx">
</span><span class="cx"> bool isOffscreenCanvas() const final { return true; }
</span><span class="cx">
</span><del>- ScriptExecutionContext* scriptExecutionContext() const final { return CanvasBase::scriptExecutionContext(); }
</del><ins>+ ScriptExecutionContext* scriptExecutionContext() const final { return ContextDestructionObserver::scriptExecutionContext(); }
+ ScriptExecutionContext* canvasBaseScriptExecutionContext() const final { return ContextDestructionObserver::scriptExecutionContext(); }
</ins><span class="cx">
</span><span class="cx"> EventTargetInterface eventTargetInterface() const final { return OffscreenCanvasEventTargetInterfaceType; }
</span><span class="cx"> void refEventTarget() final { ref(); }
</span></span></pre>
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