Title: [201835] trunk
Revision
201835
Author
cdu...@apple.com
Date
2016-06-08 15:14:55 -0700 (Wed, 08 Jun 2016)

Log Message

First parameter to MessagePort / DedicatedWorkerGlobalScope.postMessage() should be mandatory
https://bugs.webkit.org/show_bug.cgi?id=158540

Reviewed by Geoffrey Garen.

Source/WebCore:

First parameter to MessagePort / DedicatedWorkerGlobalScope.postMessage() should be mandatory:
- https://html.spec.whatwg.org/multipage/comms.html#messageport
- https://html.spec.whatwg.org/multipage/workers.html#dedicated-workers-and-the-dedicatedworkerglobalscope-interface

Previously, WebKit send a bogus MessageEvent whose data attribute is undefined. This would
cause a testharness error when running the following W3C test:
- http://w3c-test.org/workers/interfaces.worker

Firefox and Chrome already correctly throw in this case. Our Window.postMessage() API is also
already throwing in this case.

Test: fast/workers/postMessage-missing-parameter.html

* bindings/js/JSMessagePortCustom.h:
(WebCore::handlePostMessage):

LayoutTests:

Add test coverage.

* fast/files/workers/inline-worker-via-blob-url.html:
* fast/workers/postMessage-missing-parameter-expected.txt: Added.
* fast/workers/postMessage-missing-parameter.html: Added.
* fast/workers/worker-messageport-expected.txt:
* fast/workers/worker-messageport.html:

Modified Paths

Added Paths

Diff

Modified: trunk/LayoutTests/ChangeLog (201834 => 201835)


--- trunk/LayoutTests/ChangeLog	2016-06-08 21:49:32 UTC (rev 201834)
+++ trunk/LayoutTests/ChangeLog	2016-06-08 22:14:55 UTC (rev 201835)
@@ -1,3 +1,18 @@
+2016-06-08  Chris Dumez  <cdu...@apple.com>
+
+        First parameter to MessagePort / DedicatedWorkerGlobalScope.postMessage() should be mandatory
+        https://bugs.webkit.org/show_bug.cgi?id=158540
+
+        Reviewed by Geoffrey Garen.
+
+        Add test coverage.
+
+        * fast/files/workers/inline-worker-via-blob-url.html:
+        * fast/workers/postMessage-missing-parameter-expected.txt: Added.
+        * fast/workers/postMessage-missing-parameter.html: Added.
+        * fast/workers/worker-messageport-expected.txt:
+        * fast/workers/worker-messageport.html:
+
 2016-06-08  Nan Wang  <n_w...@apple.com>
 
         For keyboard users, activating a fragment URL should transfer focus and caret to the destination

Modified: trunk/LayoutTests/fast/files/workers/inline-worker-via-blob-url.html (201834 => 201835)


--- trunk/LayoutTests/fast/files/workers/inline-worker-via-blob-url.html	2016-06-08 21:49:32 UTC (rev 201834)
+++ trunk/LayoutTests/fast/files/workers/inline-worker-via-blob-url.html	2016-06-08 22:14:55 UTC (rev 201835)
@@ -23,7 +23,7 @@
         if (testRunner.notifyDone)
             testRunner.notifyDone();
     };
-    worker.postMessage();
+    worker.postMessage("message");
 }
 
 if (window.testRunner) {

Added: trunk/LayoutTests/fast/workers/postMessage-missing-parameter-expected.txt (0 => 201835)


--- trunk/LayoutTests/fast/workers/postMessage-missing-parameter-expected.txt	                        (rev 0)
+++ trunk/LayoutTests/fast/workers/postMessage-missing-parameter-expected.txt	2016-06-08 22:14:55 UTC (rev 201835)
@@ -0,0 +1,10 @@
+Tests that calling DedicatedWorkerGlobalScope.postMessage() without parameter throws an exception
+
+On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
+
+
+postMessage(): TypeError: Not enough arguments
+PASS successfullyParsed is true
+
+TEST COMPLETE
+

Added: trunk/LayoutTests/fast/workers/postMessage-missing-parameter.html (0 => 201835)


--- trunk/LayoutTests/fast/workers/postMessage-missing-parameter.html	                        (rev 0)
+++ trunk/LayoutTests/fast/workers/postMessage-missing-parameter.html	2016-06-08 22:14:55 UTC (rev 201835)
@@ -0,0 +1,22 @@
+<!DOCTYPE html>
+<script src=""
+<script src=""
+<script>
+
+var jsTestIsAsync = true;
+
+description('Tests that calling DedicatedWorkerGlobalScope.postMessage() without parameter throws an exception');
+
+var worker = createWorker();
+worker.postMessage("eval postMessage()");
+worker.postMessage("eval DONE");
+
+worker._onmessage_ = function(evt) {
+    if (!/DONE/.test(evt.data))
+        debug(evt.data.replace(new RegExp("/.*LayoutTests"), "<...>"));
+    else
+        finishJSTest();
+};
+
+</script>
+<script src=""

Modified: trunk/LayoutTests/fast/workers/worker-messageport-expected.txt (201834 => 201835)


--- trunk/LayoutTests/fast/workers/worker-messageport-expected.txt	2016-06-08 21:49:32 UTC (rev 201834)
+++ trunk/LayoutTests/fast/workers/worker-messageport-expected.txt	2016-06-08 22:14:55 UTC (rev 201835)
@@ -4,6 +4,7 @@
 PASS: Received message port
 PASS: Received response from Worker via MessagePort
 PASS: Got port from worker
+PASS: Calling MessagePort.postMessage() without parameter threw exception: TypeError: Not enough arguments
 PASS: Received final response from worker
 PASS: Got 1000 messages
 DONE

Modified: trunk/LayoutTests/fast/workers/worker-messageport.html (201834 => 201835)


--- trunk/LayoutTests/fast/workers/worker-messageport.html	2016-06-08 21:49:32 UTC (rev 201834)
+++ trunk/LayoutTests/fast/workers/worker-messageport.html	2016-06-08 22:14:55 UTC (rev 201835)
@@ -51,6 +51,13 @@
             log("FAIL: Got the wrong number of ports from worker: " + evt.ports.length);
         } else {
             log("PASS: Got port from worker");
+            try {
+                // Missing parameter, should throw.
+                evt.ports[0].postMessage();
+                log("FAIL: Calling MessagePort.postMessage() without parameter did not throw.");
+            } catch (e) {
+                log("PASS: Calling MessagePort.postMessage() without parameter threw exception: " + e);
+            }
             evt.ports[0].postMessage("ping");
             evt.ports[0]._onmessage_ = function(evt) {
                 if (evt.data == "pong") {

Modified: trunk/Source/WebCore/ChangeLog (201834 => 201835)


--- trunk/Source/WebCore/ChangeLog	2016-06-08 21:49:32 UTC (rev 201834)
+++ trunk/Source/WebCore/ChangeLog	2016-06-08 22:14:55 UTC (rev 201835)
@@ -1,3 +1,26 @@
+2016-06-08  Chris Dumez  <cdu...@apple.com>
+
+        First parameter to MessagePort / DedicatedWorkerGlobalScope.postMessage() should be mandatory
+        https://bugs.webkit.org/show_bug.cgi?id=158540
+
+        Reviewed by Geoffrey Garen.
+
+        First parameter to MessagePort / DedicatedWorkerGlobalScope.postMessage() should be mandatory:
+        - https://html.spec.whatwg.org/multipage/comms.html#messageport
+        - https://html.spec.whatwg.org/multipage/workers.html#dedicated-workers-and-the-dedicatedworkerglobalscope-interface
+
+        Previously, WebKit send a bogus MessageEvent whose data attribute is undefined. This would
+        cause a testharness error when running the following W3C test:
+        - http://w3c-test.org/workers/interfaces.worker
+
+        Firefox and Chrome already correctly throw in this case. Our Window.postMessage() API is also
+        already throwing in this case.
+
+        Test: fast/workers/postMessage-missing-parameter.html
+
+        * bindings/js/JSMessagePortCustom.h:
+        (WebCore::handlePostMessage):
+
 2016-06-08  Gavin Barraclough  <barraclo...@apple.com>
 
         Remove removeDirect

Modified: trunk/Source/WebCore/bindings/js/JSMessagePortCustom.h (201834 => 201835)


--- trunk/Source/WebCore/bindings/js/JSMessagePortCustom.h	2016-06-08 21:49:32 UTC (rev 201834)
+++ trunk/Source/WebCore/bindings/js/JSMessagePortCustom.h	2016-06-08 22:14:55 UTC (rev 201835)
@@ -32,6 +32,7 @@
 #define JSMessagePortCustom_h
 
 #include "MessagePort.h"
+#include <runtime/Error.h>
 #include <runtime/JSCInlines.h>
 #include <runtime/JSCJSValue.h>
 #include <wtf/Forward.h>
@@ -49,10 +50,13 @@
     template <typename T>
     inline JSC::JSValue handlePostMessage(JSC::ExecState& state, T* impl)
     {
+        if (UNLIKELY(state.argumentCount() < 1))
+            return state.vm().throwException(&state, createNotEnoughArgumentsError(&state));
+
         MessagePortArray portArray;
         ArrayBufferArray arrayBufferArray;
         fillMessagePortArray(state, state.argument(1), portArray, arrayBufferArray);
-        RefPtr<SerializedScriptValue> message = SerializedScriptValue::create(&state, state.argument(0), &portArray, &arrayBufferArray);
+        RefPtr<SerializedScriptValue> message = SerializedScriptValue::create(&state, state.uncheckedArgument(0), &portArray, &arrayBufferArray);
         if (state.hadException())
             return JSC::jsUndefined();
 
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