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<pre id="console"></pre>
<script>
if (window.testRunner) {
    testRunner.dumpAsText();
    testRunner.waitUntilDone();
}

log = function(msg)
{
    document.getElementById('console').appendChild(document.createTextNode(msg + "\n"));
}

testTexImage2D = function(gl, source, description)
{
    description = "Calling texImage2D() with an untainted " + description;
    try {
        gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, source);
        log("PASS: " + description + " was allowed");
    } catch (e) {
        log("FAIL: " + description + " was not allowed: Threw error: " + e + ".");
    }
}

testReadPixels = function(gl, description)
{
    description = "Calling readPixels() from a canvas tainted by a " + description;
    try {
        var pixels = new Uint8Array(4);
        gl.readPixels(0, 0, 1, 1, gl.RGBA, gl.UNSIGNED_BYTE, pixels);
        log("PASS: " + description + " was allowed.");
    } catch (e) {
        log("FAIL: " + description + " was not allowed - Threw error: " + e + ".");
    }
}

testToDataURL = function(canvas, description)
{
    description = "Calling toDataURL() on a canvas CORS-untainted by a " + description;
    try {
        var dataURL = canvas.toDataURL();
        log("PASS: " + description + " was allowed.");
    } catch (e) {
        log("FAIL: " + description + " was not allowed - Threw error: " + e + ".");
    }
}

test = function(canvas, description)
{
    testReadPixels(canvas.getContext("webgl"), description);
    testToDataURL(canvas, description);
}

testResource = function (resource, resourceType, continuation)
{
    log("");
    log("Testing " + resourceType + "...");

    var canvas = document.createElement("canvas");
    canvas.width = 100;
    canvas.height = 100;
    var gl = canvas.getContext("webgl");

    // Control tests
    log("Untainted canvas:");
    try {
        var pixels = new Uint8Array(4);
        gl.readPixels(0, 0, 1, 1, gl.RGBA, gl.UNSIGNED_BYTE, pixels);
        log("PASS: Calling readPixels() from an untainted canvas was allowed.");
    } catch (e) {
        log("FAIL: Calling readPixels() from an untainted canvas was not allowed: Threw error: " + e + ".");
    }
    try {
        var dataURL = canvas.toDataURL();
        log("PASS: Calling toDataURL() on an untainted canvas was allowed.");
    } catch (e) {
        log("FAIL: Calling toDataURL() on an untainted canvas was not allowed: Threw error: " + e + ".");
    }

    log("");
    log("Tainted canvas:");
    // Test reading from a canvas after uploading a remote resource as a texture
    var texture = gl.createTexture();
    gl.bindTexture(gl.TEXTURE_2D, texture);
    testTexImage2D(gl, resource, resourceType);

    test(canvas, "remote " + resourceType);

    // Now test reading from a canvas after uploading a tainted canvas onto it
    var dirtyCanvas = document.createElement("canvas");
    dirtyCanvas.width = 100;
    dirtyCanvas.height = 100;
    var dirtyContext = dirtyCanvas.getContext("2d");
    dirtyContext.drawImage(resource, 0, 0, 100, 100);
    testTexImage2D(gl, dirtyCanvas, "canvas");

    test(canvas, "CORS-untained canvas");

    continuation();
}

finishUp = function ()
{
    if (window.testRunner)
        testRunner.notifyDone();
}

testImage = function ()
{
    var image = new Image();
    image.onload = testResource.bind(null, image, "image", testVideo);
    image.crossOrigin = "use-credentials";
    image.src = "http://localhost:8000/security/resources/abe-allow-credentials.php";
}

testVideo = function ()
{
    var video = document.createElement('video');
    video.oncanplay = testResource.bind(null, video, "video", finishUp);
    video.crossOrigin = "use-credentials";
    var name = "../../media/resources/test.ogv";
    var type = "video/ogg";
    video.src = "http://localhost:8000/security/resources/video-cross-origin-allow.php?with_credentials&name=" + name + "&type=" + type;
}

finishUp = function ()
{
    log("DONE");
    if (window.testRunner)
        testRunner.notifyDone();
}

testImage();
</script>
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