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-rw-r--r--dom/canvas/CanvasRenderingContext2D.cpp17
-rw-r--r--dom/canvas/CanvasRenderingContext2D.h14
-rw-r--r--dom/canvas/ImageBitmap.cpp101
-rw-r--r--dom/canvas/ImageBitmap.h12
-rw-r--r--dom/canvas/ImageBitmapRenderingContext.cpp5
-rw-r--r--dom/canvas/WebGLContext.h3
-rw-r--r--dom/canvas/WebGLTextureUpload.cpp22
-rw-r--r--dom/canvas/test/test_imagebitmap.html23
-rw-r--r--dom/html/HTMLCanvasElement.cpp2
-rw-r--r--dom/html/HTMLCanvasElement.h4
10 files changed, 143 insertions, 60 deletions
diff --git a/dom/canvas/CanvasRenderingContext2D.cpp b/dom/canvas/CanvasRenderingContext2D.cpp
index b60ab239d..a750c69b0 100644
--- a/dom/canvas/CanvasRenderingContext2D.cpp
+++ b/dom/canvas/CanvasRenderingContext2D.cpp
@@ -1105,6 +1105,7 @@ CanvasRenderingContext2D::CanvasRenderingContext2D(layers::LayersBackend aCompos
, mIsCapturedFrameInvalid(false)
, mPathTransformWillUpdate(false)
, mInvalidateCount(0)
+ , mWriteOnly(false) // == !origin-clean
{
sNumLivingContexts++;
@@ -2562,7 +2563,8 @@ CanvasRenderingContext2D::CreatePattern(const CanvasImageSource& aSource,
// nullptr and set CORSUsed to true for passing the security check in
// CanvasUtils::DoDrawImageSecurityCheck().
RefPtr<CanvasPattern> pat =
- new CanvasPattern(this, srcSurf, repeatMode, nullptr, false, true);
+ new CanvasPattern(this, srcSurf, repeatMode, nullptr,
+ imgBitmap.IsWriteOnly(), true);
return pat.forget();
}
@@ -4952,6 +4954,10 @@ CanvasRenderingContext2D::DrawImage(const CanvasImageSource& aImage,
aError.Throw(NS_ERROR_DOM_INVALID_STATE_ERR);
return;
}
+
+ if (canvas->IsWriteOnly()) {
+ SetWriteOnly();
+ }
} else if (aImage.IsImageBitmap()) {
ImageBitmap& imageBitmap = aImage.GetAsImageBitmap();
srcSurf = imageBitmap.PrepareForDrawTarget(mTarget);
@@ -4960,6 +4966,10 @@ CanvasRenderingContext2D::DrawImage(const CanvasImageSource& aImage,
return;
}
+ if (imageBitmap.IsWriteOnly()) {
+ SetWriteOnly();
+ }
+
imgSize = gfx::IntSize(imageBitmap.Width(), imageBitmap.Height());
}
else {
@@ -5674,9 +5684,8 @@ CanvasRenderingContext2D::GetImageData(JSContext* aCx, double aSx,
// Check only if we have a canvas element; if we were created with a docshell,
// then it's special internal use.
- if (mCanvasElement && mCanvasElement->IsWriteOnly() &&
- !nsContentUtils::IsCallerChrome())
- {
+ if (IsWriteOnly() ||
+ (mCanvasElement && mCanvasElement->IsWriteOnly() && !nsContentUtils::IsCallerChrome())) {
// XXX ERRMSG we need to report an error to developers here! (bug 329026)
aError.Throw(NS_ERROR_DOM_SECURITY_ERR);
return nullptr;
diff --git a/dom/canvas/CanvasRenderingContext2D.h b/dom/canvas/CanvasRenderingContext2D.h
index 848b3ee08..46758ec88 100644
--- a/dom/canvas/CanvasRenderingContext2D.h
+++ b/dom/canvas/CanvasRenderingContext2D.h
@@ -40,6 +40,7 @@ class SourceSurface;
namespace dom {
class HTMLImageElementOrSVGImageElementOrHTMLCanvasElementOrHTMLVideoElementOrImageBitmap;
typedef HTMLImageElementOrSVGImageElementOrHTMLCanvasElementOrHTMLVideoElementOrImageBitmap CanvasImageSource;
+class ImageBitmap;
class ImageData;
class StringOrCanvasGradientOrCanvasPattern;
class OwningStringOrCanvasGradientOrCanvasPattern;
@@ -1151,6 +1152,19 @@ protected:
friend struct CanvasBidiProcessor;
friend class CanvasDrawObserver;
+ friend class ImageBitmap;
+
+ // For the origin-clean algorithm (mWriteOnly == !origin-clean)
+ // See https://html.spec.whatwg.org/multipage/imagebitmap-and-animations.html
+ void SetWriteOnly() {
+ mWriteOnly = true;
+ }
+
+ bool IsWriteOnly() const {
+ return mWriteOnly;
+ }
+
+ bool mWriteOnly;
};
} // namespace dom
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;
}
diff --git a/dom/canvas/ImageBitmap.h b/dom/canvas/ImageBitmap.h
index 2119c6bda..25084b6ac 100644
--- a/dom/canvas/ImageBitmap.h
+++ b/dom/canvas/ImageBitmap.h
@@ -65,6 +65,7 @@ struct ImageBitmapCloneData final
gfx::IntRect mPictureRect;
bool mIsPremultipliedAlpha;
bool mIsCroppingAreaOutSideOfSourceImage;
+ bool mWriteOnly;
};
/*
@@ -161,6 +162,10 @@ public:
template<typename T>
friend class MapDataIntoBufferSource;
+ bool IsWriteOnly() const {
+ return mWriteOnly;
+ }
+
// Mozilla Extensions
ImageBitmapFormat
FindOptimalFormat(const Optional<Sequence<ImageBitmapFormat>>& aPossibleFormats,
@@ -197,6 +202,7 @@ protected:
* CreateInternal(from ImageData) method.
*/
ImageBitmap(nsIGlobalObject* aGlobal, layers::Image* aData,
+ bool aWriteOnly,
bool aIsPremultipliedAlpha = true);
virtual ~ImageBitmap();
@@ -280,6 +286,12 @@ protected:
*/
bool mIsCroppingAreaOutSideOfSourceImage;
+ /*
+ * Write-Only flag is set to true if this image has been generated from a
+ * cross-origin source. This is the opposite of what is called 'origin-clean'
+ * in the spec.
+ */
+ bool mWriteOnly;
};
} // namespace dom
diff --git a/dom/canvas/ImageBitmapRenderingContext.cpp b/dom/canvas/ImageBitmapRenderingContext.cpp
index 8f5074554..ad313906a 100644
--- a/dom/canvas/ImageBitmapRenderingContext.cpp
+++ b/dom/canvas/ImageBitmapRenderingContext.cpp
@@ -63,6 +63,11 @@ ImageBitmapRenderingContext::TransferFromImageBitmap(ImageBitmap& aImageBitmap)
if (!mImage) {
return;
}
+
+ // Check if ImageBitmap is tainted, and if so flag the canvas tainted too.
+ if (aImageBitmap.IsWriteOnly() && mCanvasElement) {
+ mCanvasElement->SetWriteOnly();
+ }
Redraw(gfxRect(0, 0, mWidth, mHeight));
}
diff --git a/dom/canvas/WebGLContext.h b/dom/canvas/WebGLContext.h
index 3ec307b00..8a20237ff 100644
--- a/dom/canvas/WebGLContext.h
+++ b/dom/canvas/WebGLContext.h
@@ -275,8 +275,9 @@ struct TexImageSourceAdapter final : public TexImageSource
mPboOffset = pboOffset;
}
- TexImageSourceAdapter(const dom::ImageBitmap* imageBitmap, ErrorResult*) {
+ TexImageSourceAdapter(const dom::ImageBitmap* imageBitmap, ErrorResult* out_error) {
mImageBitmap = imageBitmap;
+ mOut_error = out_error;
}
TexImageSourceAdapter(const dom::ImageData* imageData, ErrorResult*) {
diff --git a/dom/canvas/WebGLTextureUpload.cpp b/dom/canvas/WebGLTextureUpload.cpp
index 612d5889d..3839b5d5e 100644
--- a/dom/canvas/WebGLTextureUpload.cpp
+++ b/dom/canvas/WebGLTextureUpload.cpp
@@ -12,6 +12,7 @@
#include "GLBlitHelper.h"
#include "GLContext.h"
#include "mozilla/gfx/2D.h"
+#include "mozilla/dom/HTMLCanvasElement.h"
#include "mozilla/dom/HTMLVideoElement.h"
#include "mozilla/dom/ImageBitmap.h"
#include "mozilla/dom/ImageData.h"
@@ -214,9 +215,18 @@ FromPboOffset(WebGLContext* webgl, const char* funcName, TexImageTarget target,
static UniquePtr<webgl::TexUnpackBlob>
FromImageBitmap(WebGLContext* webgl, const char* funcName, TexImageTarget target,
uint32_t width, uint32_t height, uint32_t depth,
- const dom::ImageBitmap& imageBitmap)
+ const dom::ImageBitmap& imageBitmap, ErrorResult* aRv)
{
+ if (imageBitmap.IsWriteOnly()) {
+ aRv->Throw(NS_ERROR_DOM_SECURITY_ERR);
+ return nullptr;
+ }
+
UniquePtr<dom::ImageBitmapCloneData> cloneData = Move(imageBitmap.ToCloneData());
+ if (!cloneData) {
+ return nullptr;
+ }
+
const RefPtr<gfx::DataSourceSurface> surf = cloneData->mSurface;
////
@@ -293,6 +303,14 @@ WebGLContext::FromDomElem(const char* funcName, TexImageTarget target, uint32_t
uint32_t height, uint32_t depth, const dom::Element& elem,
ErrorResult* const out_error)
{
+ if (elem.IsHTMLElement(nsGkAtoms::canvas)) {
+ const dom::HTMLCanvasElement* canvas = static_cast<const dom::HTMLCanvasElement*>(&elem);
+ if (canvas->IsWriteOnly()) {
+ out_error->Throw(NS_ERROR_DOM_SECURITY_ERR);
+ return nullptr;
+ }
+ }
+
uint32_t flags = nsLayoutUtils::SFE_WANT_IMAGE_SURFACE |
nsLayoutUtils::SFE_USE_ELEMENT_SIZE_IF_VECTOR;
@@ -412,7 +430,7 @@ WebGLContext::From(const char* funcName, TexImageTarget target, GLsizei rawWidth
if (src.mImageBitmap) {
return FromImageBitmap(this, funcName, target, width, height, depth,
- *(src.mImageBitmap));
+ *(src.mImageBitmap), src.mOut_error);
}
if (src.mImageData) {
diff --git a/dom/canvas/test/test_imagebitmap.html b/dom/canvas/test/test_imagebitmap.html
index b3d3c08ad..3b74970ac 100644
--- a/dom/canvas/test/test_imagebitmap.html
+++ b/dom/canvas/test/test_imagebitmap.html
@@ -270,13 +270,22 @@ function testSecurityErrors() {
}
function checkPromiseFailedWithSecurityError(p) {
- return p.then( function(reason) { ok(false, "Did not get SecurityError with unclean source. ImageBitmap was created successfully."); },
- function(reason) { if (reason == "SecurityError: The operation is insecure.") {
- ok(true, reason);
- }
- else {
- ok(false, "Did not get SecurityError with unclean source. Error Message: " + reason);
- }});
+ return p.then(imageBitmap => {
+ ok(!!imageBitmap, "ImageBitmaps are always created");
+ const context = document.createElement("canvas").getContext("2d");
+ context.drawImage(imageBitmap, 0, 0);
+ try {
+ context.getImageData(0, 0, 1, 1);
+ ok(false, "Did not get SecurityError with unclean source. ImageBitmap was created successfully.");
+ } catch (ex) {
+ if (ex == "SecurityError: The operation is insecure.") {
+ ok(true, ex);
+ }
+ else {
+ ok(false, "Did not get SecurityError with unclean source. Error Message: " + ex);
+ }
+ }
+ });
}
return Promise.all([
diff --git a/dom/html/HTMLCanvasElement.cpp b/dom/html/HTMLCanvasElement.cpp
index 527135a80..a01795d9e 100644
--- a/dom/html/HTMLCanvasElement.cpp
+++ b/dom/html/HTMLCanvasElement.cpp
@@ -1000,7 +1000,7 @@ HTMLCanvasElement::GetSize()
}
bool
-HTMLCanvasElement::IsWriteOnly()
+HTMLCanvasElement::IsWriteOnly() const
{
return mWriteOnly;
}
diff --git a/dom/html/HTMLCanvasElement.h b/dom/html/HTMLCanvasElement.h
index 746fab198..e77db6ff1 100644
--- a/dom/html/HTMLCanvasElement.h
+++ b/dom/html/HTMLCanvasElement.h
@@ -224,9 +224,9 @@ public:
nsIntSize GetSize();
/**
- * Determine whether the canvas is write-only.
+ * Determine whether the canvas is write-only (tainted).
*/
- bool IsWriteOnly();
+ bool IsWriteOnly() const;
/**
* Force the canvas to be write-only.
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-27 23:21:41 +0000