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<div id="msg">
<dl class="meta">
<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/165339">165339</a></dd>
<dt>Author</dt> <dd>oliver@apple.com</dd>
<dt>Date</dt> <dd>2014-03-08 14:29:00 -0800 (Sat, 08 Mar 2014)</dd>
</dl>

<h3>Log Message</h3>
<pre>SerializedScriptValue may move Identifiers between worlds
https://bugs.webkit.org/show_bug.cgi?id=129979

Reviewed by Andreas Kling.

Source/WebCore:

Test: fast/workers/worker-copy-shared-blob-url.html

Don't use Strings to store blob URLs as String's may be Identifiers
and they can only exist in one world/thread at a time.

* Modules/indexeddb/IDBObjectStore.cpp:
(WebCore::IDBObjectStore::put):
* bindings/js/SerializedScriptValue.cpp:
(WebCore::CloneDeserializer::deserializeString):
(WebCore::SerializedScriptValue::addBlobURL):
(WebCore::SerializedScriptValue::SerializedScriptValue):
* bindings/js/SerializedScriptValue.h:

LayoutTests:

Add test cases

* fast/workers/resources/worker-copy-shared-blob-url-worker.js: Added.
(count.0.onmessage):
* fast/workers/worker-copy-shared-blob-url-expected.txt: Added.
* fast/workers/worker-copy-shared-blob-url.html: Added.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkLayoutTestsChangeLog">trunk/LayoutTests/ChangeLog</a></li>
<li><a href="#trunkSourceWebCoreChangeLog">trunk/Source/WebCore/ChangeLog</a></li>
<li><a href="#trunkSourceWebCoreModulesindexeddbIDBObjectStorecpp">trunk/Source/WebCore/Modules/indexeddb/IDBObjectStore.cpp</a></li>
<li><a href="#trunkSourceWebCorebindingsjsSerializedScriptValuecpp">trunk/Source/WebCore/bindings/js/SerializedScriptValue.cpp</a></li>
<li><a href="#trunkSourceWebCorebindingsjsSerializedScriptValueh">trunk/Source/WebCore/bindings/js/SerializedScriptValue.h</a></li>
</ul>

<h3>Added Paths</h3>
<ul>
<li><a href="#trunkLayoutTestsfastworkersresourcesworkercopysharedbloburlworkerjs">trunk/LayoutTests/fast/workers/resources/worker-copy-shared-blob-url-worker.js</a></li>
<li><a href="#trunkLayoutTestsfastworkersworkercopysharedbloburlexpectedtxt">trunk/LayoutTests/fast/workers/worker-copy-shared-blob-url-expected.txt</a></li>
<li><a href="#trunkLayoutTestsfastworkersworkercopysharedbloburlhtml">trunk/LayoutTests/fast/workers/worker-copy-shared-blob-url.html</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkLayoutTestsChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/LayoutTests/ChangeLog (165338 => 165339)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/ChangeLog        2014-03-08 22:14:47 UTC (rev 165338)
+++ trunk/LayoutTests/ChangeLog        2014-03-08 22:29:00 UTC (rev 165339)
</span><span class="lines">@@ -1,3 +1,17 @@
</span><ins>+2014-03-08  Oliver Hunt  &lt;oliver@apple.com&gt;
+
+        SerializedScriptValue may move Identifiers between worlds
+        https://bugs.webkit.org/show_bug.cgi?id=129979
+
+        Reviewed by Andreas Kling.
+
+        Add test cases
+
+        * fast/workers/resources/worker-copy-shared-blob-url-worker.js: Added.
+        (count.0.onmessage):
+        * fast/workers/worker-copy-shared-blob-url-expected.txt: Added.
+        * fast/workers/worker-copy-shared-blob-url.html: Added.
+
</ins><span class="cx"> 2014-03-08  Martin Robinson  &lt;mrobinson@igalia.com&gt;
</span><span class="cx"> 
</span><span class="cx">         Lots of cleanups for the GTK+ TestExpectations
</span></span></pre></div>
<a id="trunkLayoutTestsfastworkersresourcesworkercopysharedbloburlworkerjs"></a>
<div class="addfile"><h4>Added: trunk/LayoutTests/fast/workers/resources/worker-copy-shared-blob-url-worker.js (0 => 165339)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/fast/workers/resources/worker-copy-shared-blob-url-worker.js                                (rev 0)
+++ trunk/LayoutTests/fast/workers/resources/worker-copy-shared-blob-url-worker.js        2014-03-08 22:29:00 UTC (rev 165339)
</span><span class="lines">@@ -0,0 +1,19 @@
</span><ins>+object = null;
+count = 0
+onmessage = function(message) {
+    try {
+        if (!object)
+            object = {[message.data.filename]: message.data.filename};
+        if (count++ == 10) {
+            object = null;
+            for (var i = 0; i &lt; 1000; i++)
+                object = {} + &quot;&quot; + i
+            object = null;
+            count = 0;
+        }
+        postMessage(message.data);
+    } catch(e) {
+        postMessage(message.data);
+    }
+}
+
</ins></span></pre></div>
<a id="trunkLayoutTestsfastworkersworkercopysharedbloburlexpectedtxt"></a>
<div class="addfile"><h4>Added: trunk/LayoutTests/fast/workers/worker-copy-shared-blob-url-expected.txt (0 => 165339)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/fast/workers/worker-copy-shared-blob-url-expected.txt                                (rev 0)
+++ trunk/LayoutTests/fast/workers/worker-copy-shared-blob-url-expected.txt        2014-03-08 22:29:00 UTC (rev 165339)
</span><span class="lines">@@ -0,0 +1,1504 @@
</span><ins>+
+Test result of transferring a file and filename between worker and main page. Should print a series of PASS messages, followed with DONE.
+
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+
</ins></span></pre></div>
<a id="trunkLayoutTestsfastworkersworkercopysharedbloburlhtml"></a>
<div class="addfile"><h4>Added: trunk/LayoutTests/fast/workers/worker-copy-shared-blob-url.html (0 => 165339)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/fast/workers/worker-copy-shared-blob-url.html                                (rev 0)
+++ trunk/LayoutTests/fast/workers/worker-copy-shared-blob-url.html        2014-03-08 22:29:00 UTC (rev 165339)
</span><span class="lines">@@ -0,0 +1,58 @@
</span><ins>+&lt;!DOCTYPE html&gt;
+&lt;html&gt;
+&lt;head&gt;
+&lt;script src=&quot;../../resources/js-test-pre.js&quot;&gt;&lt;/script&gt;
+&lt;/head&gt;
+&lt;body&gt;
+&lt;input id=&quot;fileinput&quot; type=&quot;file&quot; multiple onchange=&quot;test()&quot;&gt;
+&lt;p&gt;Test result of transferring a file and filename between worker and main page. Should print a series of PASS messages, followed with DONE.&lt;/p&gt;
+&lt;pre id=&quot;result&quot;&gt;&lt;/pre&gt;
+&lt;script&gt;
+function log(message)
+{
+    if (window.testRunner)
+        messages += message + &quot;\n&quot;;
+    else
+        document.getElementById(&quot;result&quot;).innerHTML += message + &quot;&lt;br&gt;&quot;;
+}
+
+if (window.testRunner) {
+    testRunner.dumpAsText();
+    testRunner.waitUntilDone();
+}
+
+var worker = new Worker(&quot;resources/worker-copy-shared-blob-url-worker.js&quot;)
+var messageCount = 0;
+var messages = &quot;&quot;;
+worker.onmessage = function (message) {
+    try {
+        log(message.data.file)
+        log(message.data.file.name)
+        log(message.data[file.name].name)
+        if (!--messageCount &amp;&amp; window.testRunner) {
+            document.getElementById(&quot;result&quot;).innerText += messages
+            testRunner.notifyDone();
+        }
+    } catch (e) {
+        document.getElementById(&quot;result&quot;).innerText += e
+        testRunner.notifyDone();
+    }
+}
+file = null;
+function test()
+{
+    file = document.getElementById(&quot;fileinput&quot;).files[0]
+    for (messageCount = 0; messageCount &lt; 500; messageCount++)
+        worker.postMessage({[file.name]: file, file: file})
+}
+&lt;/script&gt;
+
+&lt;script&gt;
+
+if (window.testRunner) {
+    eventSender.beginDragWithFiles([&quot;worker-copy-shared-blob-urls.html&quot;]);
+    eventSender.mouseMoveTo(10, 10);
+    eventSender.mouseUp();
+}
+
+&lt;/script&gt;
</ins><span class="cx">\ No newline at end of file
</span></span></pre></div>
<a id="trunkSourceWebCoreChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/ChangeLog (165338 => 165339)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/ChangeLog        2014-03-08 22:14:47 UTC (rev 165338)
+++ trunk/Source/WebCore/ChangeLog        2014-03-08 22:29:00 UTC (rev 165339)
</span><span class="lines">@@ -1,3 +1,23 @@
</span><ins>+2014-03-08  Oliver Hunt  &lt;oliver@apple.com&gt;
+
+        SerializedScriptValue may move Identifiers between worlds
+        https://bugs.webkit.org/show_bug.cgi?id=129979
+
+        Reviewed by Andreas Kling.
+
+        Test: fast/workers/worker-copy-shared-blob-url.html
+
+        Don't use Strings to store blob URLs as String's may be Identifiers
+        and they can only exist in one world/thread at a time.
+
+        * Modules/indexeddb/IDBObjectStore.cpp:
+        (WebCore::IDBObjectStore::put):
+        * bindings/js/SerializedScriptValue.cpp:
+        (WebCore::CloneDeserializer::deserializeString):
+        (WebCore::SerializedScriptValue::addBlobURL):
+        (WebCore::SerializedScriptValue::SerializedScriptValue):
+        * bindings/js/SerializedScriptValue.h:
+
</ins><span class="cx"> 2014-03-07  Timothy Hatcher  &lt;timothy@apple.com&gt;
</span><span class="cx"> 
</span><span class="cx">         Load source maps and their resources asynchronously.
</span></span></pre></div>
<a id="trunkSourceWebCoreModulesindexeddbIDBObjectStorecpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/Modules/indexeddb/IDBObjectStore.cpp (165338 => 165339)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/Modules/indexeddb/IDBObjectStore.cpp        2014-03-08 22:14:47 UTC (rev 165338)
+++ trunk/Source/WebCore/Modules/indexeddb/IDBObjectStore.cpp        2014-03-08 22:29:00 UTC (rev 165339)
</span><span class="lines">@@ -147,7 +147,7 @@
</span><span class="cx">     if (state-&gt;hadException())
</span><span class="cx">         return nullptr;
</span><span class="cx"> 
</span><del>-    if (serializedValue-&gt;blobURLs().size() &gt; 0) {
</del><ins>+    if (serializedValue-&gt;hasBlobURLs()) {
</ins><span class="cx">         // FIXME: Add Blob/File/FileList support
</span><span class="cx">         ec = IDBDatabaseException::DataCloneError;
</span><span class="cx">         return nullptr;
</span></span></pre></div>
<a id="trunkSourceWebCorebindingsjsSerializedScriptValuecpp"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/bindings/js/SerializedScriptValue.cpp (165338 => 165339)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/bindings/js/SerializedScriptValue.cpp        2014-03-08 22:14:47 UTC (rev 165338)
+++ trunk/Source/WebCore/bindings/js/SerializedScriptValue.cpp        2014-03-08 22:29:00 UTC (rev 165339)
</span><span class="lines">@@ -1412,6 +1412,8 @@
</span><span class="cx"> public:
</span><span class="cx">     static String deserializeString(const Vector&lt;uint8_t&gt;&amp; buffer)
</span><span class="cx">     {
</span><ins>+        if (buffer.isEmpty())
+            return String();
</ins><span class="cx">         const uint8_t* ptr = buffer.begin();
</span><span class="cx">         const uint8_t* end = buffer.end();
</span><span class="cx">         uint32_t version;
</span><span class="lines">@@ -2505,8 +2507,15 @@
</span><span class="cx">     return std::make_pair(JSValue(), ValidationError);
</span><span class="cx"> }
</span><span class="cx"> 
</span><ins>+void SerializedScriptValue::addBlobURL(const String&amp; string)
+{
+    m_blobURLs.append(Vector&lt;uint16_t&gt;());
+    m_blobURLs.last().reserveCapacity(string.length());
+    for (size_t i = 0; i &lt; string.length(); i++)
+        m_blobURLs.last().append(string.characterAt(i));
+    m_blobURLs.last().resize(m_blobURLs.last().size());
+}
</ins><span class="cx"> 
</span><del>-
</del><span class="cx"> SerializedScriptValue::~SerializedScriptValue()
</span><span class="cx"> {
</span><span class="cx"> }
</span><span class="lines">@@ -2524,14 +2533,16 @@
</span><span class="cx"> SerializedScriptValue::SerializedScriptValue(Vector&lt;uint8_t&gt;&amp; buffer, Vector&lt;String&gt;&amp; blobURLs)
</span><span class="cx"> {
</span><span class="cx">     m_data.swap(buffer);
</span><del>-    m_blobURLs.swap(blobURLs);
</del><ins>+    for (auto&amp; string : blobURLs)
+        addBlobURL(string);
</ins><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> SerializedScriptValue::SerializedScriptValue(Vector&lt;uint8_t&gt;&amp; buffer, Vector&lt;String&gt;&amp; blobURLs, PassOwnPtr&lt;ArrayBufferContentsArray&gt; arrayBufferContentsArray)
</span><span class="cx">     : m_arrayBufferContentsArray(arrayBufferContentsArray)
</span><span class="cx"> {
</span><span class="cx">     m_data.swap(buffer);
</span><del>-    m_blobURLs.swap(blobURLs);
</del><ins>+    for (auto&amp; string : blobURLs)
+        addBlobURL(string);
</ins><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> PassOwnPtr&lt;SerializedScriptValue::ArrayBufferContentsArray&gt; SerializedScriptValue::transferArrayBuffers(
</span></span></pre></div>
<a id="trunkSourceWebCorebindingsjsSerializedScriptValueh"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/bindings/js/SerializedScriptValue.h (165338 => 165339)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/bindings/js/SerializedScriptValue.h        2014-03-08 22:14:47 UTC (rev 165338)
+++ trunk/Source/WebCore/bindings/js/SerializedScriptValue.h        2014-03-08 22:29:00 UTC (rev 165339)
</span><span class="lines">@@ -88,7 +88,8 @@
</span><span class="cx">     JSValueRef deserialize(JSContextRef, JSValueRef* exception);
</span><span class="cx"> 
</span><span class="cx">     const Vector&lt;uint8_t&gt;&amp; data() const { return m_data; }
</span><del>-    const Vector&lt;String&gt;&amp; blobURLs() const { return m_blobURLs; }
</del><ins>+    bool hasBlobURLs() const { return !m_blobURLs.isEmpty(); }
+    void blobURLs(Vector&lt;String&gt;&amp;) const;
</ins><span class="cx"> 
</span><span class="cx"> #if ENABLE(INDEXED_DATABASE)
</span><span class="cx">     // FIXME: Get rid of these. The only caller immediately deserializes the result, so it's a very roundabout way to create a JSValue.
</span><span class="lines">@@ -109,6 +110,7 @@
</span><span class="cx">     static void maybeThrowExceptionIfSerializationFailed(JSC::ExecState*, SerializationReturnCode);
</span><span class="cx">     static bool serializationDidCompleteSuccessfully(SerializationReturnCode);
</span><span class="cx">     static PassOwnPtr&lt;ArrayBufferContentsArray&gt; transferArrayBuffers(JSC::ExecState*, ArrayBufferArray&amp;, SerializationReturnCode&amp;);
</span><ins>+    void addBlobURL(const String&amp;);
</ins><span class="cx"> 
</span><span class="cx">     SerializedScriptValue(const Vector&lt;unsigned char&gt;&amp;);
</span><span class="cx">     SerializedScriptValue(Vector&lt;unsigned char&gt;&amp;);
</span><span class="lines">@@ -117,7 +119,7 @@
</span><span class="cx"> 
</span><span class="cx">     Vector&lt;unsigned char&gt; m_data;
</span><span class="cx">     OwnPtr&lt;ArrayBufferContentsArray&gt; m_arrayBufferContentsArray;
</span><del>-    Vector&lt;String&gt; m_blobURLs;
</del><ins>+    Vector&lt;Vector&lt;uint16_t&gt;&gt; m_blobURLs;
</ins><span class="cx"> };
</span><span class="cx"> 
</span><span class="cx"> }
</span></span></pre>
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