Issue #1442 - Part 16 - Report stream errors during consumption. https://bugzilla.mozilla.org/show_bug.cgi?id=1128959

dom/base/nsContentUtils.cpp

@@ -39,6 +39,8 @@
 #include "mozilla/dom/ContentChild.h"
 #include "mozilla/dom/CustomElementRegistry.h"
 #include "mozilla/dom/DocumentFragment.h"
+#include "mozilla/dom/DOMException.h"
+#include "mozilla/dom/DOMExceptionBinding.h"
 #include "mozilla/dom/DOMTypes.h"
 #include "mozilla/dom/Element.h"
 #include "mozilla/dom/FileSystemSecurity.h"
@@ -10081,3 +10083,72 @@ void nsContentUtils::StructuredClone(JSContext* aCx,
   nsTArray<RefPtr<MessagePort>> ports = holder.TakeTransferredPorts();
   Unused << ports;
 }
+
+/* static */ void
+nsContentUtils::ExtractErrorValues(JSContext* aCx,
+                                   JS::Handle<JS::Value> aValue,
+                                   nsACString& aSourceSpecOut,
+                                   uint32_t* aLineOut,
+                                   uint32_t* aColumnOut,
+                                   nsString& aMessageOut)
+{
+  MOZ_ASSERT(aLineOut);
+  MOZ_ASSERT(aColumnOut);
+
+  if (aValue.isObject()) {
+    JS::Rooted<JSObject*> obj(aCx, &aValue.toObject());
+    RefPtr<dom::DOMException> domException;
+
+    // Try to process as an Error object.  Use the file/line/column values
+    // from the Error as they will be more specific to the root cause of
+    // the problem.
+    JSErrorReport* err = obj ? JS_ErrorFromException(aCx, obj) : nullptr;
+    if (err) {
+      // Use xpc to extract the error message only.  We don't actually send
+      // this report anywhere.
+      RefPtr<xpc::ErrorReport> report = new xpc::ErrorReport();
+      report->Init(err,
+                   "<unknown>", // toString result
+                   false,       // chrome
+                   0);          // window ID
+
+      if (!report->mFileName.IsEmpty()) {
+        CopyUTF16toUTF8(report->mFileName, aSourceSpecOut);
+        *aLineOut = report->mLineNumber;
+        *aColumnOut = report->mColumn;
+      }
+      aMessageOut.Assign(report->mErrorMsg);
+    }
+
+    // Next, try to unwrap the rejection value as a DOMException.
+    else if(NS_SUCCEEDED(UNWRAP_OBJECT(DOMException, obj, domException))) {
+
+      nsAutoString filename;
+      domException->GetFilename(aCx, filename);
+      if (!filename.IsEmpty()) {
+        CopyUTF16toUTF8(filename, aSourceSpecOut);
+        *aLineOut = domException->LineNumber(aCx);
+        *aColumnOut = domException->ColumnNumber();
+      }
+
+      domException->GetName(aMessageOut);
+      aMessageOut.AppendLiteral(": ");
+
+      nsAutoString message;
+      domException->GetMessageMoz(message);
+      aMessageOut.Append(message);
+    }
+  }
+
+  // If we could not unwrap a specific error type, then perform default safe
+  // string conversions on primitives.  Objects will result in "[Object]"
+  // unfortunately.
+  if (aMessageOut.IsEmpty()) {
+    nsAutoJSString jsString;
+    if (jsString.init(aCx, aValue)) {
+      aMessageOut = jsString;
+    } else {
+      JS_ClearPendingException(aCx);
+    }
+  }
+}

dom/base/nsContentUtils.h

@@ -1010,6 +1010,10 @@ public:
 
   static bool PrefetchEnabled(nsIDocShell* aDocShell);
 
+  static void ExtractErrorValues(JSContext* aCx, JS::Handle<JS::Value> aValue,
+                                 nsACString& aSourceSpecOut, uint32_t *aLineOut,
+                                 uint32_t *aColumnOut, nsString& aMessageOut);
+
   static nsresult CalculateBufferSizeForImage(const uint32_t& aStride,
                                               const mozilla::gfx::IntSize& aImageSize,
                                               const mozilla::gfx::SurfaceFormat& aFormat,

dom/fetch/Fetch.h

@@ -209,7 +209,7 @@ public:
   // reporting way.
   //
   // Exceptions generated when reading from the ReadableStream are directly sent
- // to the Console (NOTE FOR THE REVIEWER: this is part of patch 16)
+  // to the Console.
   void
   SetBodyUsed(JSContext* aCx, ErrorResult& aRv);
 

dom/fetch/FetchStreamReader.cpp

@@ -7,6 +7,9 @@
 #include "FetchStreamReader.h"
 #include "InternalResponse.h"
 #include "mozilla/dom/PromiseBinding.h"
+#include "nsContentUtils.h"
+#include "nsIScriptError.h"
+#include "nsPIDOMWindow.h"
 
 namespace mozilla {
 namespace dom {
@@ -296,8 +299,56 @@ void
 FetchStreamReader::RejectedCallback(JSContext* aCx,
                                     JS::Handle<JS::Value> aValue)
 {
+  ReportErrorToConsole(aCx, aValue);
   CloseAndRelease(NS_ERROR_FAILURE);
 }
 
+void
+FetchStreamReader::ReportErrorToConsole(JSContext* aCx,
+                                        JS::Handle<JS::Value> aValue)
+{
+  nsCString sourceSpec;
+  uint32_t line = 0;
+  uint32_t column = 0;
+  nsString valueString;
+
+  nsContentUtils::ExtractErrorValues(aCx, aValue, sourceSpec, &line,
+                                     &column, valueString);
+
+  nsTArray<nsString> params;
+  params.AppendElement(valueString);
+
+  RefPtr<ConsoleReportCollector> reporter = new ConsoleReportCollector();
+  reporter->AddConsoleReport(nsIScriptError::errorFlag,
+                             NS_LITERAL_CSTRING("ReadableStreamReader.read"),
+                             nsContentUtils::eDOM_PROPERTIES,
+                             sourceSpec, line, column,
+                             NS_LITERAL_CSTRING("ReadableStreamReadingFailed"),
+                             params);
+
+  uint64_t innerWindowId = 0;
+
+  if (NS_IsMainThread()) {
+    nsCOMPtr<nsPIDOMWindowInner> window = do_QueryInterface(mGlobal);
+    if (window) {
+      innerWindowId = window->WindowID();
+    }
+    reporter->FlushReportsByWindowId(innerWindowId);
+    return;
+  }
+
+  WorkerPrivate* workerPrivate = GetWorkerPrivateFromContext(aCx);
+  if (workerPrivate) {
+    innerWindowId = workerPrivate->WindowID();
+  }
+
+  RefPtr<Runnable> r = NS_NewRunnableFunction(
+    [reporter, innerWindowId] () {
+      reporter->FlushReportsByWindowId(innerWindowId);
+    });
+
+  workerPrivate->DispatchToMainThread(r.forget());
+}
+
 } // dom namespace
 } // mozilla namespace

dom/fetch/FetchStreamReader.h

@@ -55,6 +55,9 @@ private:
   nsresult
   WriteBuffer();
 
+  void
+  ReportErrorToConsole(JSContext* aCx, JS::Handle<JS::Value> aValue);
+
   nsCOMPtr<nsIGlobalObject> mGlobal;
   nsCOMPtr<nsIEventTarget> mOwningEventTarget;
 

dom/workers/ServiceWorkerEvents.cpp

@@ -6,6 +6,7 @@
 #include "ServiceWorkerEvents.h"
 
 #include "nsAutoPtr.h"
+#include "nsContentUtils.h"
 #include "nsIConsoleReportCollector.h"
 #include "nsIHttpChannelInternal.h"
 #include "nsINetworkInterceptController.h"
@@ -30,8 +31,6 @@
 #include "mozilla/Move.h"
 #include "mozilla/Preferences.h"
 #include "mozilla/dom/BodyUtil.h"
-#include "mozilla/dom/DOMException.h"
-#include "mozilla/dom/DOMExceptionBinding.h"
 #include "mozilla/dom/EncodingUtils.h"
 #include "mozilla/dom/FetchEventBinding.h"
 #include "mozilla/dom/MessagePort.h"
@@ -404,76 +403,6 @@ void RespondWithCopyComplete(void* aClosure, nsresult aStatus)
   MOZ_ALWAYS_SUCCEEDS(NS_DispatchToMainThread(event));
 }
 
-namespace {
-
-void
-ExtractErrorValues(JSContext* aCx, JS::Handle<JS::Value> aValue,
-                  nsACString& aSourceSpecOut, uint32_t *aLineOut,
-                  uint32_t *aColumnOut, nsString& aMessageOut)
-{
-  MOZ_ASSERT(aLineOut);
-  MOZ_ASSERT(aColumnOut);
-
-  if (aValue.isObject()) {
-    JS::Rooted<JSObject*> obj(aCx, &aValue.toObject());
-    RefPtr<DOMException> domException;
-
-    // Try to process as an Error object.  Use the file/line/column values
-    // from the Error as they will be more specific to the root cause of
-    // the problem.
-    JSErrorReport* err = obj ? JS_ErrorFromException(aCx, obj) : nullptr;
-    if (err) {
-      // Use xpc to extract the error message only.  We don't actually send
-      // this report anywhere.
-      RefPtr<xpc::ErrorReport> report = new xpc::ErrorReport();
-      report->Init(err,
-                   "<unknown>", // toString result
-                   false,       // chrome
-                   0);          // window ID
-
-      if (!report->mFileName.IsEmpty()) {
-        CopyUTF16toUTF8(report->mFileName, aSourceSpecOut);
-        *aLineOut = report->mLineNumber;
-        *aColumnOut = report->mColumn;
-      }
-      aMessageOut.Assign(report->mErrorMsg);
-    }
-
-    // Next, try to unwrap the rejection value as a DOMException.
-    else if(NS_SUCCEEDED(UNWRAP_OBJECT(DOMException, obj, domException))) {
-
-      nsAutoString filename;
-      domException->GetFilename(aCx, filename);
-      if (!filename.IsEmpty()) {
-        CopyUTF16toUTF8(filename, aSourceSpecOut);
-        *aLineOut = domException->LineNumber(aCx);
-        *aColumnOut = domException->ColumnNumber();
-      }
-
-      domException->GetName(aMessageOut);
-      aMessageOut.AppendLiteral(": ");
-
-      nsAutoString message;
-      domException->GetMessageMoz(message);
-      aMessageOut.Append(message);
-    }
-  }
-
-  // If we could not unwrap a specific error type, then perform default safe
-  // string conversions on primitives.  Objects will result in "[Object]"
-  // unfortunately.
-  if (aMessageOut.IsEmpty()) {
-    nsAutoJSString jsString;
-    if (jsString.init(aCx, aValue)) {
-      aMessageOut = jsString;
-    } else {
-      JS_ClearPendingException(aCx);
-    }
-  }
-}
-
-} // anonymous namespace
-
 class MOZ_STACK_CLASS AutoCancel
 {
   RefPtr<RespondWithHandler> mOwner;
@@ -595,7 +524,8 @@ RespondWithHandler::ResolvedCallback(JSContext* aCx, JS::Handle<JS::Value> aValu
     uint32_t line = 0;
     uint32_t column = 0;
     nsString valueString;
-    ExtractErrorValues(aCx, aValue, sourceSpec, &line, &column, valueString);
+    nsContentUtils::ExtractErrorValues(aCx, aValue, sourceSpec, &line, &column,
+                                       valueString);
 
     autoCancel.SetCancelMessageAndLocation(sourceSpec, line, column,
                                            NS_LITERAL_CSTRING("InterceptedNonResponseWithURL"),
@@ -610,7 +540,8 @@ RespondWithHandler::ResolvedCallback(JSContext* aCx, JS::Handle<JS::Value> aValu
     uint32_t line = 0;
     uint32_t column = 0;
     nsString valueString;
-    ExtractErrorValues(aCx, aValue, sourceSpec, &line, &column, valueString);
+    nsContentUtils::ExtractErrorValues(aCx, aValue, sourceSpec, &line, &column,
+                                       valueString);
 
     autoCancel.SetCancelMessageAndLocation(sourceSpec, line, column,
                                            NS_LITERAL_CSTRING("InterceptedNonResponseWithURL"),
@@ -758,7 +689,8 @@ RespondWithHandler::RejectedCallback(JSContext* aCx, JS::Handle<JS::Value> aValu
   uint32_t column = mRespondWithColumnNumber;
   nsString valueString;
 
-  ExtractErrorValues(aCx, aValue, sourceSpec, &line, &column, valueString);
+  nsContentUtils::ExtractErrorValues(aCx, aValue, sourceSpec, &line, &column,
+                                     valueString);
 
   ::AsyncLog(mInterceptedChannel, sourceSpec, line, column,
              NS_LITERAL_CSTRING("InterceptionRejectedResponseWithURL"),
@@ -896,7 +828,8 @@ public:
     nsCString spec;
     uint32_t line = 0;
     uint32_t column = 0;
-    ExtractErrorValues(aCx, aValue, spec, &line, &column, mRejectValue);
+    nsContentUtils::ExtractErrorValues(aCx, aValue, spec, &line, &column,
+                                       mRejectValue);
 
     // only use the extracted location if we found one
     if (!spec.IsEmpty()) {