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| (Empty) | |
| 1 <!DOCTYPE html> |
| 2 <html> |
| 3 <body> |
| 4 <canvas id='output' width='200' height='400'></canvas> |
| 5 <script src="/js-test-resources/js-test.js"></script> |
| 6 <script id='myWorker' type='text/worker'> |
| 7 self.onmessage = function(e) { |
| 8 var aCanvas = new OffscreenCanvas(200, 400); |
| 9 var ctx = aCanvas.getContext('2d'); |
| 10 |
| 11 // Draw a tainted imagebitmap into OffscreenCanvas 2d |
| 12 ctx.drawImage(e.data, 0, 0, 10, 10); |
| 13 |
| 14 var image = aCanvas.transferToImageBitmap(); |
| 15 self.postMessage(image, [image]); |
| 16 }; |
| 17 </script> |
| 18 <script> |
| 19 description("The taintedness of the imagebitmap drawn to OffscrenCanvas must be
transfered"); |
| 20 |
| 21 window.jsTestIsAsync = true; |
| 22 |
| 23 function shouldBeTainted(imageBitmap) { |
| 24 var canvas = document.createElement("canvas"); |
| 25 canvas.width = 10; |
| 26 canvas.height = 10; |
| 27 var context = canvas.getContext("2d"); |
| 28 context.drawImage(imageBitmap, 0, 0, 10, 10); |
| 29 try { |
| 30 var imageData = context.getImageData(0, 0, 10, 10); |
| 31 testFailed("ImageBitmap is not tainted."); |
| 32 } catch (e) { |
| 33 testPassed("ImageBitmap is tainted. Threw error: " + e); |
| 34 } |
| 35 } |
| 36 |
| 37 var blob = new Blob([document.getElementById('myWorker').textContent]); |
| 38 var worker = new Worker(URL.createObjectURL(blob)); |
| 39 worker.addEventListener('message', msg => { |
| 40 shouldBeTainted(msg.data); |
| 41 finishJSTest(); |
| 42 }); |
| 43 |
| 44 var image = document.createElement('img'); |
| 45 image.src = 'http://localhost:8080/security/resources/abe.png'; |
| 46 image.addEventListener('load', function() { |
| 47 createImageBitmap(image, 0, 0, 10, 10).then( |
| 48 function(imagebitmap) { |
| 49 // Post the tainted imagebitmap to worker |
| 50 worker.postMessage(imagebitmap, [imagebitmap]); |
| 51 }, |
| 52 function(e) { |
| 53 testFailed("Image rejected unexpectedly. "); |
| 54 debug(e); |
| 55 } |
| 56 ); |
| 57 }); |
| 58 |
| 59 </script> |
| 60 </body> |
| 61 </html> |
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Chromium Code Reviews
Issue 1928043002:
Add drawImage() originClean() getSecurityOrigin() to OffscreenCanvas (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master