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-rw-r--r--dom/canvas/ImageBitmap.cpp101
1 files changed, 58 insertions, 43 deletions
diff --git a/dom/canvas/ImageBitmap.cpp b/dom/canvas/ImageBitmap.cpp
index e45cdfc6f..6efe1b318 100644
--- a/dom/canvas/ImageBitmap.cpp
+++ b/dom/canvas/ImageBitmap.cpp
@@ -351,29 +351,27 @@ CheckSecurityForHTMLElements(const nsLayoutUtils::SurfaceFromElementResult& aRes
*/
template<class HTMLElementType>
static already_AddRefed<SourceSurface>
-GetSurfaceFromElement(nsIGlobalObject* aGlobal, HTMLElementType& aElement, ErrorResult& aRv)
+GetSurfaceFromElement(nsIGlobalObject* aGlobal, HTMLElementType& aElement,
+ bool* aWriteOnly, ErrorResult& aRv)
{
nsLayoutUtils::SurfaceFromElementResult res =
nsLayoutUtils::SurfaceFromElement(&aElement, nsLayoutUtils::SFE_WANT_FIRST_FRAME);
- // check origin-clean
- if (!CheckSecurityForHTMLElements(res)) {
- aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
- return nullptr;
- }
-
RefPtr<SourceSurface> surface = res.GetSourceSurface();
if (NS_WARN_IF(!surface)) {
- aRv.Throw(NS_ERROR_NOT_AVAILABLE);
+ aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
return nullptr;
}
+
+ // Check origin-clean and pass back
+ *aWriteOnly = !CheckSecurityForHTMLElements(res);
return surface.forget();
}
/*
- * The specification doesn't allow to create an ImegeBitmap from a vector image.
+ * The specification doesn't allow to create an ImageBitmap from a vector image.
* This function is used to check if the given HTMLImageElement contains a
* raster image.
*/
@@ -398,7 +396,7 @@ HasRasterImage(HTMLImageElement& aImageEl)
}
ImageBitmap::ImageBitmap(nsIGlobalObject* aGlobal, layers::Image* aData,
- bool aIsPremultipliedAlpha /* = true */)
+ bool aWriteOnly, bool aIsPremultipliedAlpha /* = true */)
: mParent(aGlobal)
, mData(aData)
, mSurface(nullptr)
@@ -406,6 +404,7 @@ ImageBitmap::ImageBitmap(nsIGlobalObject* aGlobal, layers::Image* aData,
, mPictureRect(0, 0, aData->GetSize().width, aData->GetSize().height)
, mIsPremultipliedAlpha(aIsPremultipliedAlpha)
, mIsCroppingAreaOutSideOfSourceImage(false)
+ , mWriteOnly(aWriteOnly)
{
MOZ_ASSERT(aData, "aData is null in ImageBitmap constructor.");
}
@@ -698,6 +697,7 @@ ImageBitmap::ToCloneData() const
RefPtr<SourceSurface> surface = mData->GetAsSourceSurface();
result->mSurface = surface->GetDataSurface();
MOZ_ASSERT(result->mSurface);
+ result->mWriteOnly = mWriteOnly;
return Move(result);
}
@@ -708,7 +708,7 @@ ImageBitmap::CreateFromCloneData(nsIGlobalObject* aGlobal,
{
RefPtr<layers::Image> data = CreateImageFromSurface(aData->mSurface);
- RefPtr<ImageBitmap> ret = new ImageBitmap(aGlobal, data,
+ RefPtr<ImageBitmap> ret = new ImageBitmap(aGlobal, data, aData->mWriteOnly,
aData->mIsPremultipliedAlpha);
ret->mIsCroppingAreaOutSideOfSourceImage =
@@ -724,11 +724,8 @@ ImageBitmap::CreateFromOffscreenCanvas(nsIGlobalObject* aGlobal,
OffscreenCanvas& aOffscreenCanvas,
ErrorResult& aRv)
{
- // Check origin-clean.
- if (aOffscreenCanvas.IsWriteOnly()) {
- aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
- return nullptr;
- }
+ // Check origin-clean
+ bool writeOnly = aOffscreenCanvas.IsWriteOnly();
nsLayoutUtils::SurfaceFromElementResult res =
nsLayoutUtils::SurfaceFromOffscreenCanvas(&aOffscreenCanvas,
@@ -744,7 +741,7 @@ ImageBitmap::CreateFromOffscreenCanvas(nsIGlobalObject* aGlobal,
RefPtr<layers::Image> data =
CreateImageFromSurface(surface);
- RefPtr<ImageBitmap> ret = new ImageBitmap(aGlobal, data);
+ RefPtr<ImageBitmap> ret = new ImageBitmap(aGlobal, data, writeOnly);
return ret.forget();
}
@@ -757,16 +754,19 @@ ImageBitmap::CreateInternal(nsIGlobalObject* aGlobal, HTMLImageElement& aImageEl
aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
return nullptr;
}
-
+
// Check if the image element is a bitmap (e.g. it's a vector graphic) or not.
if (!HasRasterImage(aImageEl)) {
aRv.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
return nullptr;
}
+ bool writeOnly = true;
+
// Get the SourceSurface out from the image element and then do security
// checking.
- RefPtr<SourceSurface> surface = GetSurfaceFromElement(aGlobal, aImageEl, aRv);
+ RefPtr<SourceSurface> surface = GetSurfaceFromElement(aGlobal, aImageEl,
+ &writeOnly, aRv);
if (NS_WARN_IF(aRv.Failed())) {
return nullptr;
@@ -780,7 +780,7 @@ ImageBitmap::CreateInternal(nsIGlobalObject* aGlobal, HTMLImageElement& aImageEl
return nullptr;
}
- RefPtr<ImageBitmap> ret = new ImageBitmap(aGlobal, data);
+ RefPtr<ImageBitmap> ret = new ImageBitmap(aGlobal, data, writeOnly);
// Set the picture rectangle.
if (ret && aCropRect.isSome()) {
@@ -812,13 +812,13 @@ ImageBitmap::CreateInternal(nsIGlobalObject* aGlobal, HTMLVideoElement& aVideoEl
return nullptr;
}
+ bool writeOnly = true;
+
// Check security.
nsCOMPtr<nsIPrincipal> principal = aVideoEl.GetCurrentVideoPrincipal();
bool CORSUsed = aVideoEl.GetCORSMode() != CORS_NONE;
- if (!CheckSecurityForHTMLElements(false, CORSUsed, principal)) {
- aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
- return nullptr;
- }
+
+ writeOnly = !CheckSecurityForHTMLElements(false, CORSUsed, principal);
// Create ImageBitmap.
ImageContainer *container = aVideoEl.GetImageContainer();
@@ -834,7 +834,7 @@ ImageBitmap::CreateInternal(nsIGlobalObject* aGlobal, HTMLVideoElement& aVideoEl
aRv.Throw(NS_ERROR_NOT_AVAILABLE);
return nullptr;
}
- RefPtr<ImageBitmap> ret = new ImageBitmap(aGlobal, data);
+ RefPtr<ImageBitmap> ret = new ImageBitmap(aGlobal, data, writeOnly);
// Set the picture rectangle.
if (ret && aCropRect.isSome()) {
@@ -856,12 +856,18 @@ ImageBitmap::CreateInternal(nsIGlobalObject* aGlobal, HTMLCanvasElement& aCanvas
return nullptr;
}
- RefPtr<SourceSurface> surface = GetSurfaceFromElement(aGlobal, aCanvasEl, aRv);
+ bool writeOnly = true;
+
+ RefPtr<SourceSurface> surface = GetSurfaceFromElement(aGlobal, aCanvasEl, &writeOnly, aRv);
if (NS_WARN_IF(aRv.Failed())) {
return nullptr;
}
+ if (!writeOnly) {
+ writeOnly = aCanvasEl.IsWriteOnly();
+ }
+
// Crop the source surface if needed.
RefPtr<SourceSurface> croppedSurface;
IntRect cropRect = aCropRect.valueOr(IntRect());
@@ -874,8 +880,7 @@ ImageBitmap::CreateInternal(nsIGlobalObject* aGlobal, HTMLCanvasElement& aCanvas
aCropRect.isSome()) {
// The _surface_ must be a DataSourceSurface.
MOZ_ASSERT(surface->GetType() == SurfaceType::DATA,
- "The snapshot SourceSurface from WebGL rendering contest is not \
- DataSourceSurface.");
+ "The snapshot SourceSurface from WebGL rendering contest is not DataSourceSurface.");
RefPtr<DataSourceSurface> dataSurface = surface->GetDataSurface();
croppedSurface = CropAndCopyDataSourceSurface(dataSurface, cropRect);
cropRect.MoveTo(0, 0);
@@ -897,7 +902,7 @@ ImageBitmap::CreateInternal(nsIGlobalObject* aGlobal, HTMLCanvasElement& aCanvas
return nullptr;
}
- RefPtr<ImageBitmap> ret = new ImageBitmap(aGlobal, data);
+ RefPtr<ImageBitmap> ret = new ImageBitmap(aGlobal, data, writeOnly);
// Set the picture rectangle.
if (ret && aCropRect.isSome()) {
@@ -958,9 +963,12 @@ ImageBitmap::CreateInternal(nsIGlobalObject* aGlobal, ImageData& aImageData,
return nullptr;
}
- // Create an ImageBimtap.
+ // Create an ImageBitmap.
// ImageData's underlying data is not alpha-premultiplied.
- RefPtr<ImageBitmap> ret = new ImageBitmap(aGlobal, data, false);
+ RefPtr<ImageBitmap> ret = new ImageBitmap(aGlobal,
+ data,
+ false /* write-only */,
+ false /* alpha-premult */);
// The cropping information has been handled in the CreateImageFromRawData()
// function.
@@ -975,11 +983,8 @@ ImageBitmap::CreateInternal(nsIGlobalObject* aGlobal, ImageData& aImageData,
ImageBitmap::CreateInternal(nsIGlobalObject* aGlobal, CanvasRenderingContext2D& aCanvasCtx,
const Maybe<IntRect>& aCropRect, ErrorResult& aRv)
{
- // Check origin-clean.
- if (aCanvasCtx.GetCanvas()->IsWriteOnly()) {
- aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
- return nullptr;
- }
+ // Check origin-clean
+ bool writeOnly = aCanvasCtx.GetCanvas()->IsWriteOnly() || aCanvasCtx.IsWriteOnly();
RefPtr<SourceSurface> surface = aCanvasCtx.GetSurfaceSnapshot();
@@ -1001,7 +1006,7 @@ ImageBitmap::CreateInternal(nsIGlobalObject* aGlobal, CanvasRenderingContext2D&
return nullptr;
}
- RefPtr<ImageBitmap> ret = new ImageBitmap(aGlobal, data);
+ RefPtr<ImageBitmap> ret = new ImageBitmap(aGlobal, data, writeOnly);
// Set the picture rectangle.
if (ret && aCropRect.isSome()) {
@@ -1024,7 +1029,10 @@ ImageBitmap::CreateInternal(nsIGlobalObject* aGlobal, ImageBitmap& aImageBitmap,
}
RefPtr<layers::Image> data = aImageBitmap.mData;
- RefPtr<ImageBitmap> ret = new ImageBitmap(aGlobal, data, aImageBitmap.mIsPremultipliedAlpha);
+ RefPtr<ImageBitmap> ret = new ImageBitmap(aGlobal,
+ data,
+ aImageBitmap.mWriteOnly,
+ aImageBitmap.mIsPremultipliedAlpha);
// Set the picture rectangle.
if (ret && aCropRect.isSome()) {
@@ -1295,7 +1303,7 @@ private:
}
// Create ImageBitmap object.
- RefPtr<ImageBitmap> imageBitmap = new ImageBitmap(mGlobalObject, data);
+ RefPtr<ImageBitmap> imageBitmap = new ImageBitmap(mGlobalObject, data, false /* write-only */);
// Set mIsCroppingAreaOutSideOfSourceImage.
imageBitmap->SetIsCroppingAreaOutSideOfSourceImage(sourceSize, originalCropRect);
@@ -1391,7 +1399,7 @@ private:
}
// Create ImageBitmap object.
- RefPtr<ImageBitmap> imageBitmap = new ImageBitmap(mGlobalObject, data);
+ RefPtr<ImageBitmap> imageBitmap = new ImageBitmap(mGlobalObject, data, false /* write-only */);
// Set mIsCroppingAreaOutSideOfSourceImage.
imageBitmap->SetIsCroppingAreaOutSideOfSourceImage(sourceSize, originalCropRect);
@@ -1486,14 +1494,19 @@ ImageBitmap::ReadStructuredClone(JSContext* aCx,
uint32_t picRectHeight_;
uint32_t isPremultipliedAlpha_;
uint32_t isCroppingAreaOutSideOfSourceImage_;
+ uint32_t writeOnly;
+ uint32_t dummy;
if (!JS_ReadUint32Pair(aReader, &picRectX_, &picRectY_) ||
!JS_ReadUint32Pair(aReader, &picRectWidth_, &picRectHeight_) ||
!JS_ReadUint32Pair(aReader, &isPremultipliedAlpha_,
- &isCroppingAreaOutSideOfSourceImage_)) {
+ &isCroppingAreaOutSideOfSourceImage_) ||
+ !JS_ReadUint32Pair(aReader, &writeOnly, &dummy)) {
return nullptr;
}
+ MOZ_ASSERT(dummy == 0);
+
int32_t picRectX = BitwiseCast<int32_t>(picRectX_);
int32_t picRectY = BitwiseCast<int32_t>(picRectY_);
int32_t picRectWidth = BitwiseCast<int32_t>(picRectWidth_);
@@ -1512,7 +1525,7 @@ ImageBitmap::ReadStructuredClone(JSContext* aCx,
{
RefPtr<layers::Image> img = CreateImageFromSurface(aClonedSurfaces[aIndex]);
RefPtr<ImageBitmap> imageBitmap =
- new ImageBitmap(aParent, img, isPremultipliedAlpha_);
+ new ImageBitmap(aParent, img, !!writeOnly, isPremultipliedAlpha_);
imageBitmap->mIsCroppingAreaOutSideOfSourceImage =
isCroppingAreaOutSideOfSourceImage_;
@@ -1547,6 +1560,7 @@ ImageBitmap::WriteStructuredClone(JSStructuredCloneWriter* aWriter,
const uint32_t picRectHeight = BitwiseCast<uint32_t>(aImageBitmap->mPictureRect.height);
const uint32_t isPremultipliedAlpha = aImageBitmap->mIsPremultipliedAlpha ? 1 : 0;
const uint32_t isCroppingAreaOutSideOfSourceImage = aImageBitmap->mIsCroppingAreaOutSideOfSourceImage ? 1 : 0;
+ const uint32_t isWriteOnly = aImageBitmap->mWriteOnly ? 1 : 0;
// Indexing the cloned surfaces and send the index to the receiver.
uint32_t index = aClonedSurfaces.Length();
@@ -1555,7 +1569,8 @@ ImageBitmap::WriteStructuredClone(JSStructuredCloneWriter* aWriter,
NS_WARN_IF(!JS_WriteUint32Pair(aWriter, picRectX, picRectY)) ||
NS_WARN_IF(!JS_WriteUint32Pair(aWriter, picRectWidth, picRectHeight)) ||
NS_WARN_IF(!JS_WriteUint32Pair(aWriter, isPremultipliedAlpha,
- isCroppingAreaOutSideOfSourceImage))) {
+ isCroppingAreaOutSideOfSourceImage)) ||
+ NS_WARN_IF(!JS_WriteUint32Pair(aWriter, isWriteOnly, 0))) {
return false;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 12:15:52 +0000