security-and-privacy/CanvasBlocker
security-and-privacy/CanvasBlocker
1
0
Fork 0
mirror of https://github.com/kkapsner/CanvasBlocker synced 2024-12-22 12:50:36 +01:00
Code Releases Activity

Respect RFP in offscreenToBlobCallback

Browse Source 
Fixes #644
This commit is contained in:
kkapsner 2023-04-07 17:35:57 +02:00
parent 3b08fdaf9b
commit 269574ae17
1 changed files with 7 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
lib/modifiedCanvasAPI.js
View File

@ -258,7 +258,6 @@
const {prefs, notify, window, original} = check; const {prefs, notify, window, original} = check;
if (canvasSizeShouldBeFaked(this, prefs)){ if (canvasSizeShouldBeFaked(this, prefs)){
try { try {
const options = args[0];
const canvas = window.document.createElement("canvas"); const canvas = window.document.createElement("canvas");
canvas.width = this.width; canvas.width = this.width;
canvas.height = this.height; canvas.height = this.height;
@ -268,9 +267,13 @@
if (fakeCanvas !== canvas){ if (fakeCanvas !== canvas){
notify("fakedReadout"); notify("fakedReadout");
} }
return new window.Promise(function(resolve){
fakeCanvas.toBlob(resolve, options && options.type, options && options.quality); const fakeContext = getContext(window, fakeCanvas);
}); const {imageData} = getImageData(window, fakeContext);
const fakeOffscreenCanvas = new window.OffscreenCanvas(this.width, this.height);
const offscreenContext = fakeOffscreenCanvas.getContext("2d");
offscreenContext.putImageData(imageData, 0, 0);
return original.call(fakeOffscreenCanvas, ...args);
} }
catch (error){ catch (error){
logging.warning("Error while faking:", error); logging.warning("Error while faking:", error);