Fire window.onerror for uncaught IndexedDB errors

Source/modules/indexeddb/IDBRequest.cpp

 /*
  * Copyright (C) 2010 Google Inc. 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
@@ skipping 13 matching lines @@
  * 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 "modules/indexeddb/IDBRequest.h"
 
 #include "bindings/core/v8/ExceptionState.h"
 #include "bindings/core/v8/ExceptionStatePlaceholder.h"
+#include "bindings/core/v8/ScriptCallStackFactory.h"
 #include "bindings/modules/v8/IDBBindingUtilities.h"
 #include "core/dom/ExecutionContext.h"
+#include "core/events/ErrorEvent.h"
 #include "core/events/EventQueue.h"
+#include "core/inspector/ScriptCallFrame.h"
+#include "core/inspector/ScriptCallStack.h"
 #include "modules/indexeddb/IDBCursorWithValue.h"
 #include "modules/indexeddb/IDBDatabase.h"
 #include "modules/indexeddb/IDBEventDispatcher.h"
 #include "modules/indexeddb/IDBTracing.h"
 #include "platform/SharedBuffer.h"
 #include "public/platform/WebBlobInfo.h"
 
 using blink::WebIDBCursor;
 
 namespace WebCore {
@@ skipping 18 matching lines @@
     , m_source(source)
     , m_hasPendingActivity(true)
     , m_cursorType(IndexedDB::CursorKeyAndValue)
     , m_cursorDirection(blink::WebIDBCursorDirectionNext)
     , m_pendingCursor(nullptr)
     , m_didFireUpgradeNeededEvent(false)
     , m_preventPropagation(false)
     , m_resultDirty(true)
 {
     ScriptWrappable::init(this);
+
+    m_creationStackTrace = createScriptCallStack(ScriptCallStack::maxCallStackSizeToCapture, false);
+    ASSERT(m_creationStackTrace && m_creationStackTrace->size());
 }
 
 IDBRequest::~IDBRequest()
 {
     ASSERT(m_readyState == DONE || m_readyState == EarlyDeath || !executionContext());
     handleBlobAcks();
 }
 
 void IDBRequest::trace(Visitor* visitor)
 {
     visitor->trace(m_transaction);
     visitor->trace(m_source);
     visitor->trace(m_result);
     visitor->trace(m_error);
 #if ENABLE(OILPAN)
     visitor->trace(m_enqueuedEvents);
 #endif
     visitor->trace(m_pendingCursor);
     visitor->trace(m_cursorKey);
     visitor->trace(m_cursorPrimaryKey);
+    visitor->trace(m_creationStackTrace);
     EventTargetWithInlineData::trace(visitor);
 }
 
 ScriptValue IDBRequest::result(ExceptionState& exceptionState)
 {
     if (m_readyState != DONE) {
         exceptionState.throwDOMException(InvalidStateError, IDBDatabase::requestNotFinishedErrorMessage);
         return ScriptValue();
     }
     if (m_contextStopped || !executionContext())
@@ skipping 381 matching lines @@
     }
 
     if (cursorToNotify)
         cursorToNotify->postSuccessHandlerCallback();
 
     // An upgradeneeded event will always be followed by a success or error event, so must
     // be kept alive.
     if (m_readyState == DONE && event->type() != EventTypeNames::upgradeneeded)
         m_hasPendingActivity = false;
 
+    if (!m_preventPropagation && dontPreventDefault && event->type() == EventTypeNames::error) {

[haraken, 2014/07/02 23:25:39]

Let's add a comment what this is doing.

+        const ScriptCallFrame& frame = m_creationStackTrace->at(0);
+        const AccessControlStatus corsStatus = NotSharableCrossOrigin;
+        RefPtrWillBeRawPtr<ErrorEvent> errorEvent;
+        if (executionContext()->shouldSanitizeScriptError(frame.sourceURL(), corsStatus)) {
+            errorEvent = ErrorEvent::createSanitizedError(&m_scriptState->world());
+        } else {
+            String message = m_error->name() + ": " + m_error->message();
+            errorEvent = ErrorEvent::create(message, frame.sourceURL(), frame.lineNumber(), frame.columnNumber(), &m_scriptState->world());
+        }
+        executionContext()->reportException(errorEvent, m_creationStackTrace, corsStatus);
+    }
+
     return dontPreventDefault;
 }
 
 void IDBRequest::uncaughtExceptionInEventHandler()
 {
     if (m_transaction && !m_requestAborted) {
         m_transaction->setError(DOMError::create(AbortError, "Uncaught exception in event handler."));
         m_transaction->abort(IGNORE_EXCEPTION);
     }
 }
@@ skipping 34 matching lines @@
 
 void IDBRequest::dequeueEvent(Event* event)
 {
     for (size_t i = 0; i < m_enqueuedEvents.size(); ++i) {
         if (m_enqueuedEvents[i].get() == event)
             m_enqueuedEvents.remove(i);
     }
 }
 
 } // namespace WebCore