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LibURL+Everywhere: Only percent decode URL paths when actually needed

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Web specs do not return through javascript percent decoded URL path
components - but we were doing this in a number of places due to the
default behaviour of URL::serialize_path.

Since percent encoded URL paths may not contain valid UTF-8 - this was
resulting in us crashing in these places.

For example - on an HTMLAnchorElement when retrieving the pathname for
the URL of:

http://ladybird.org/foo%C2%91%91

To fix this make the URL class only return the percent encoded
serialized path, matching the URL spec. When the decoded path is
required instead explicitly call URL::percent_decode.

This fixes a crash running WPT URL tests for the anchor element on:

https://wpt.live/url/a-element.html
This commit is contained in:
Shannon Booth 2024-08-05 16:55:39 +12:00 • committed by Andreas Kling
commit cc55732332
Notes: github-actions[bot] 2024-08-05 07:59:02 +00:00
18 changed files with 38 additions and 38 deletions
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2
Userland/Libraries/LibWeb/Loader/Resource.cpp
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@ -102,7 +102,7 @@ void Resource::did_load(Badge<ResourceLoader>, ReadonlyBytes data, HTTP::HeaderM
if (content_type_options.value_or("").equals_ignoring_ascii_case("nosniff"sv)) {
m_mime_type = "text/plain";
} else {
m_mime_type = Core::guess_mime_type_based_on_filename(url().serialize_path());
m_mime_type = Core::guess_mime_type_based_on_filename(URL::percent_decode(url().serialize_path()));
}
}