forked from mirrors/gecko-dev
5843a639d6
Automatic update from web-platform-tests [WPT] Evaluation and CSP + script text content modification Both evaluation and CSP should use the text at the time of #prepare-a-script. Bug: https://github.com/whatwg/html/issues/7882 Change-Id: I5ba39170a52155473ff3ae7e4845b7f91d6ccf31 Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3621689 Reviewed-by: Domenic Denicola <domenic@chromium.org> Commit-Queue: Hiroshige Hayashizaki <hiroshige@chromium.org> Cr-Commit-Position: refs/heads/main@{#1002405} -- wpt-commits: 464a7f038e55b17daab1e43beebdab13aa960dd3 wpt-pr: 33903
52 lines
2.1 KiB
HTML
52 lines
2.1 KiB
HTML
<!doctype html>
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<head>
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<meta charset=utf-8>
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<title>Modify HTMLScriptElement's text after #prepare-a-script that violates CSP</title>
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<link rel=help href="https://html.spec.whatwg.org/multipage/scripting.html#prepare-a-script">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<meta http-equiv="content-security-policy" content="script-src
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'nonce-allow'
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'sha256-2+5xh6b9uuIi4GaJtmHWtgR2nwRXJpBtMY4nVaOBpfc='
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">
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<!-- The hash is that of the original content of `script0`. -->
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<script nonce="allow">
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window.t = async_test("Modify inline script element's text " +
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"after prepare-a-script before evaluation (CSP)");
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const updatedText =
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't.unreached_func("CSP check was done against the original text but the updated text was evaluated")();';
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function changeScriptText() {
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document.querySelector('#script0').textContent = updatedText;
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}
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t.step_timeout(changeScriptText, 500);
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</script>
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<!-- This is "a style sheet that is blocking scripts" and thus ... -->
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<link rel="stylesheet" href="/common/slow.py?pipe=trickle(d1)"></link>
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<!-- This inline script becomes a parser-blocking script, and thus
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the step_timeout is evaluated after script0 is inserted into DOM,
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prepare-a-script'ed, but before its evaluation. -->
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<script id="script0">
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t.step(() => {
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// When this is evaluated after the stylesheet is loaded,
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// script0's textContent is modified by the async script above,
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// but the evaluated script is still the original script here,
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// not what is overwritten, because "child text content" is taken in
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// #prepare-a-script and passed to "creating a classic script".
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var s = document.getElementById('script0');
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assert_equals(s.textContent, updatedText,
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"<script>'s textContent should be already modified");
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t.done();
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});
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</script>
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<script nonce="allow">
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// If this makes the test fail, it indicates `script0` (the original or updated
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// text) was not evaluated, probably blocked by CSP that was checked against the
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// updated text.
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t.unreached_func("CSP check was done against the updated text")();
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</script>
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