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<!DOCTYPE html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<body>
<script>
function readableURL(url) {
return url.replace(/\n/g, "\\n").replace(/\r/g, "\\r").replace(/\t/g, "\\t");
}
var should_load = [
`/images/green-1x1.png`,
`/images/gre\nen-1x1.png`,
`/images/gre\ten-1x1.png`,
`/images/gre\ren-1x1.png`,
`/images/green-1x1.png?img=<`,
`/images/green-1x1.png?img=<`,
`/images/green-1x1.png?img=%3C`,
`/images/gr\neen-1x1.png?img=%3C`,
`/images/gr\reen-1x1.png?img=%3C`,
`/images/gr\teen-1x1.png?img=%3C`,
`/images/green-1x1.png?img= `,
`/images/gr\neen-1x1.png?img= `,
`/images/gr\reen-1x1.png?img= `,
`/images/gr\teen-1x1.png?img= `,
];
should_load.forEach(url => async_test(t => {
fetch(url)
.then(t.step_func_done(r => {
assert_equals(r.status, 200);
}))
.catch(t.unreached_func("Fetch should succeed."));
}, "Fetch: " + readableURL(url)));
var should_block = [
`/images/gre\nen-1x1.png?img=<`,
`/images/gre\ren-1x1.png?img=<`,
`/images/gre\ten-1x1.png?img=<`,
`/images/green-1x1.png?<\n=block`,
`/images/green-1x1.png?<\r=block`,
`/images/green-1x1.png?<\t=block`,
];
should_block.forEach(url => async_test(t => {
fetch(url)
.then(t.unreached_func("Fetch should fail."))
.catch(t.step_func_done());
}, "Fetch: " + readableURL(url)));
// For each of the following tests, we'll inject a frame containing the HTML we'd like to poke at
// as a `srcdoc` attribute. Because we're injecting markup via `srcdoc`, we need to entity-escape
// the content we'd like to treat as "raw" (e.g. `\n` => ` `, `<` => `<`), and
// double-escape the "escaped" content.
var rawBrace = "<";
var escapedBrace = "&lt;";
var rawNewline = " ";
var escapedNewline = "&#10;";
function appendFrameAndGetElement(test, frame) {
return new Promise((resolve, reject) => {
frame.onload = test.step_func(_ => {
frame.onload = null;
resolve(frame.contentDocument.querySelector('#dangling'));
});
document.body.appendChild(frame);
});
}
function assert_img_loaded(test, frame) {
appendFrameAndGetElement(test, frame)
.then(test.step_func_done(img => {
assert_equals(img.naturalHeight, 1, "Height");
frame.remove();
}));
}
function assert_img_not_loaded(test, frame) {
appendFrameAndGetElement(test, frame)
.then(test.step_func_done(img => {
assert_equals(img.naturalHeight, 0, "Height");
assert_equals(img.naturalWidth, 0, "Width");
}));
}
function createFrame(markup) {
var i = document.createElement('iframe');
i.srcdoc = `${markup}sekrit`;
return i;
}
// The following resources should not be blocked, as their URLs do not contain both a `\n` and `<`
// character in the body of the URL.
var should_load = [
// Brace alone doesn't block:
`<img id="dangling" src="/images/green-1x1.png?img=${rawBrace}b">`,
// Newline alone doesn't block:
`<img id="dangling" src="/images/green-1x1.png?img=${rawNewline}b">`,
// Entity-escaped characters don't trigger blocking:
`<img id="dangling" src="/images/green-1x1.png?img=${escapedNewline}b">`,
`<img id="dangling" src="/images/green-1x1.png?img=${escapedBrace}b">`,
`<img id="dangling" src="/images/green-1x1.png?img=${escapedNewline}b${escapedBrace}c">`,
// Leading and trailing whitespace is stripped:
`
<img id="dangling" src="
/images/green-1x1.png?img=
">
`,
`
<img id="dangling" src="
/images/green-1x1.png?img=${escapedBrace}
">
`,
`
<img id="dangling" src="
/images/green-1x1.png?img=${escapedNewline}
">
`,
];
should_load.forEach(markup => {
async_test(t => {
var i = createFrame(`${markup} <element attr="" another=''>`);
assert_img_loaded(t, i);
}, readableURL(markup));
});
// The following resources should be blocked, as their URLs contain both `\n` and `<` characters:
var should_block = [
`<img id="dangling" src="/images/green-1x1.png?img=${rawNewline}${rawBrace}b">`,
`<img id="dangling" src="/images/green-1x1.png?img=${rawBrace}${rawNewline}b">`,
`
<img id="dangling" src="/images/green-1x1.png?img=
${rawBrace}
${rawNewline}b
">
`,
];
should_block.forEach(markup => {
async_test(t => {
var i = createFrame(`${markup}`);
assert_img_not_loaded(t, i);
}, readableURL(markup));
});
</script>
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