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LibWeb: Make default document readiness be "complete"

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This is required by mini Cloudflare invisible challenges, as it will
only run if the readyState is not "loading". If it is "loading", then
it waits for readystatechange to check that it's not "loading" anymore.

Initial about:blank iframes do not go through the full navigation and
thus don't go through HTMLParser::the_end, which sets the ready state
to something other than "loading". Therefore, the challenge would never
run, as readyState would never change.

Seen on https://discord.com/login
This commit is contained in:
Luke Wilde 2024-11-15 16:17:10 +00:00 committed by Jelle Raaijmakers
parent 4203b7823f
commit f638f84185
Notes: github-actions[bot] 2024-11-20 15:24:30 +00:00 
Author: https://github.com/Lubrsi
Commit: https://github.com/LadybirdBrowser/ladybird/commit/f638f841859
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/2363
4 changed files with 28 additions and 13 deletions
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8
Libraries/LibWeb/DOM/Document.h
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@ -823,7 +823,13 @@ private:
GC::Ptr<Document> m_associated_inert_template_document;
GC::Ptr<Document> m_appropriate_template_contents_owner_document;
HTML::DocumentReadyState m_readiness { HTML::DocumentReadyState::Loading };
// https://html.spec.whatwg.org/multipage/dom.html#current-document-readiness
// Each Document has a current document readiness, a string, initially "complete".
// Spec Note: For Document objects created via the create and initialize a Document object algorithm, this will be
// immediately reset to "loading" before any script can observe the value of document.readyState.
// This default applies to other cases such as initial about:blank Documents or Documents without a
// browsing context.
HTML::DocumentReadyState m_readiness { HTML::DocumentReadyState::Complete };
String m_content_type { "application/xml"_string };
Optional<String> m_pragma_set_default_language;
Optional<String> m_encoding;

5
Tests/LibWeb/Text/expected/HTML/document-readyState-is-initially-complete.txt Normal file
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@ -0,0 +1,5 @@
readyState of 'new Document()' should be 'complete': 'complete'
readyState of 'document.implementation.createHTMLDocument()' should be 'complete': 'complete'
readyState of 'document.implementation.createDocument()' should be 'complete': 'complete'
FIXME: readyState of 'new DOMParser().parseFromString('', 'text/html')' should be 'complete': 'interactive'
readyState of 'iframe.contentDocument' of initial about:blank iframe should be 'complete': 'complete'

10
Tests/LibWeb/Text/input/HTML/Window-postMessage.html
View file

@ -127,21 +127,11 @@
globalThis.doneCallback = done;
const blobIframeLoadPromise = new Promise(resolve => {
if (blobIframe.contentDocument.readyState === "complete") {
resolve();
}
else {
blobIframe.onload = () => resolve();
}
});
const srcdocIframeLoadPromise = new Promise(resolve => {
if (iframe.contentDocument.readyState === "complete") {
resolve()
}
else {
iframe.onload = () => resolve();
}
});
Promise.all([blobIframeLoadPromise, srcdocIframeLoadPromise]).then(() => {

14
Tests/LibWeb/Text/input/HTML/document-readyState-is-initially-complete.html Normal file
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@ -0,0 +1,14 @@
<!DOCTYPE html>
<script src="../include.js"></script>
<script>
test(() => {
println(`readyState of 'new Document()' should be 'complete': '${new Document().readyState}'`);
println(`readyState of 'document.implementation.createHTMLDocument()' should be 'complete': '${document.implementation.createHTMLDocument().readyState}'`);
println(`readyState of 'document.implementation.createDocument()' should be 'complete': '${document.implementation.createDocument('http://www.w3.org/1999/xhtml', '').readyState}'`);
println(`FIXME: readyState of 'new DOMParser().parseFromString('', 'text/html')' should be 'complete': '${new DOMParser().parseFromString('', 'text/html').readyState}'`);
const iframe = document.createElement("iframe");
document.body.appendChild(iframe);
println(`readyState of 'iframe.contentDocument' of initial about:blank iframe should be 'complete': '${iframe.contentDocument.readyState}'`);
});
</script>