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<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/192877">192877</a></dd>
<dt>Author</dt> <dd>youenn.fablet@crf.canon.fr</dd>
<dt>Date</dt> <dd>2015-12-01 02:14:04 -0800 (Tue, 01 Dec 2015)</dd>
</dl>
<h3>Log Message</h3>
<pre>[Streams API] teeReadableStream should not directly use stream.getReader()
https://bugs.webkit.org/show_bug.cgi?id=151487
Reviewed by Darin Adler.
Source/WebCore:
Covered by added test.
* Modules/streams/ReadableStreamInternals.js:
(teeReadableStream): Create a @ReadableStreamReader instead of calling getReader() which may be disrupted by user scripts.
LayoutTests:
Adding non-regression test.
* streams/streams-promises-expected.txt:
* streams/streams-promises.html:</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkLayoutTestsChangeLog">trunk/LayoutTests/ChangeLog</a></li>
<li><a href="#trunkLayoutTestsstreamsstreamspromisesexpectedtxt">trunk/LayoutTests/streams/streams-promises-expected.txt</a></li>
<li><a href="#trunkLayoutTestsstreamsstreamspromiseshtml">trunk/LayoutTests/streams/streams-promises.html</a></li>
<li><a href="#trunkSourceWebCoreChangeLog">trunk/Source/WebCore/ChangeLog</a></li>
<li><a href="#trunkSourceWebCoreModulesstreamsReadableStreamInternalsjs">trunk/Source/WebCore/Modules/streams/ReadableStreamInternals.js</a></li>
</ul>
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<div id="patch">
<h3>Diff</h3>
<a id="trunkLayoutTestsChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/LayoutTests/ChangeLog (192876 => 192877)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/ChangeLog 2015-12-01 09:46:12 UTC (rev 192876)
+++ trunk/LayoutTests/ChangeLog 2015-12-01 10:14:04 UTC (rev 192877)
</span><span class="lines">@@ -1,3 +1,15 @@
</span><ins>+2015-12-01 Youenn Fablet <youenn.fablet@crf.canon.fr>
+
+ [Streams API] teeReadableStream should not directly use stream.getReader()
+ https://bugs.webkit.org/show_bug.cgi?id=151487
+
+ Reviewed by Darin Adler.
+
+ Adding non-regression test.
+
+ * streams/streams-promises-expected.txt:
+ * streams/streams-promises.html:
+
</ins><span class="cx"> 2015-12-01 Skachkov Oleksandr <gskachkov@gmail.com>
</span><span class="cx">
</span><span class="cx"> [ES6] "super" and "this" should be lexically bound inside an arrow function and should live in a JSLexicalEnvironment
</span></span></pre></div>
<a id="trunkLayoutTestsstreamsstreamspromisesexpectedtxt"></a>
<div class="modfile"><h4>Modified: trunk/LayoutTests/streams/streams-promises-expected.txt (192876 => 192877)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/streams/streams-promises-expected.txt 2015-12-01 09:46:12 UTC (rev 192876)
+++ trunk/LayoutTests/streams/streams-promises-expected.txt 2015-12-01 10:14:04 UTC (rev 192877)
</span><span class="lines">@@ -7,4 +7,5 @@
</span><span class="cx"> PASS Streams and promises: replace catch method in Promise prototype
</span><span class="cx"> PASS Streams and promises: replace then method in promise object
</span><span class="cx"> PASS Streams should not directly use Number and related methods
</span><ins>+PASS Streams should not directly use ReadableStream public APIs
</ins><span class="cx">
</span></span></pre></div>
<a id="trunkLayoutTestsstreamsstreamspromiseshtml"></a>
<div class="modfile"><h4>Modified: trunk/LayoutTests/streams/streams-promises.html (192876 => 192877)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/LayoutTests/streams/streams-promises.html 2015-12-01 09:46:12 UTC (rev 192876)
+++ trunk/LayoutTests/streams/streams-promises.html 2015-12-01 10:14:04 UTC (rev 192877)
</span><span class="lines">@@ -115,4 +115,14 @@
</span><span class="cx"> Number.isFinite = NumberIsFiniteBackup;
</span><span class="cx"> }
</span><span class="cx"> }, 'Streams should not directly use Number and related methods');
</span><ins>+test(function() {
+ const ReadableStreamGetReaderBackup = ReadableStream.prototype.getReader;
+
+ try {
+ ReadableStream.prototype.getReader = function() { assert_unreached("streams should not use this ReadableStream.getReader method"); };
+ new ReadableStream().tee();
+ } finally {
+ ReadableStream.prototype.getReader = ReadableStreamGetReaderBackup;
+ }
+}, 'Streams should not directly use ReadableStream public APIs');
</ins><span class="cx"> </script>
</span></span></pre></div>
<a id="trunkSourceWebCoreChangeLog"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/ChangeLog (192876 => 192877)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/ChangeLog 2015-12-01 09:46:12 UTC (rev 192876)
+++ trunk/Source/WebCore/ChangeLog 2015-12-01 10:14:04 UTC (rev 192877)
</span><span class="lines">@@ -1,5 +1,17 @@
</span><span class="cx"> 2015-12-01 Youenn Fablet <youenn.fablet@crf.canon.fr>
</span><span class="cx">
</span><ins>+ [Streams API] teeReadableStream should not directly use stream.getReader()
+ https://bugs.webkit.org/show_bug.cgi?id=151487
+
+ Reviewed by Darin Adler.
+
+ Covered by added test.
+
+ * Modules/streams/ReadableStreamInternals.js:
+ (teeReadableStream): Create a @ReadableStreamReader instead of calling getReader() which may be disrupted by user scripts.
+
+2015-12-01 Youenn Fablet <youenn.fablet@crf.canon.fr>
+
</ins><span class="cx"> [Streams API] streams should not directly use Number and related methods
</span><span class="cx"> https://bugs.webkit.org/show_bug.cgi?id=151499
</span><span class="cx">
</span></span></pre></div>
<a id="trunkSourceWebCoreModulesstreamsReadableStreamInternalsjs"></a>
<div class="modfile"><h4>Modified: trunk/Source/WebCore/Modules/streams/ReadableStreamInternals.js (192876 => 192877)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/Source/WebCore/Modules/streams/ReadableStreamInternals.js 2015-12-01 09:46:12 UTC (rev 192876)
+++ trunk/Source/WebCore/Modules/streams/ReadableStreamInternals.js 2015-12-01 10:14:04 UTC (rev 192877)
</span><span class="lines">@@ -73,7 +73,7 @@
</span><span class="cx"> @assert(@isReadableStream(stream));
</span><span class="cx"> @assert(typeof(shouldClone) === "boolean");
</span><span class="cx">
</span><del>- const reader = stream.getReader();
</del><ins>+ const reader = new @ReadableStreamReader(stream);
</ins><span class="cx">
</span><span class="cx"> const teeState = {
</span><span class="cx"> closedOrErrored: false,
</span></span></pre>
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