Implement trusted types url setter (#36596)

We now check the sink of script.src for trusted types. This is the first
attribute that we check, other sinks will be implemented in follow-up
changes.

The algorithms currently hardcode various parts. That's because I need
to refactor a couple of algorithms already present in TrustedTypePolicy.
They use callbacks at the moment, which made sense for their initial
use. However, for these new algorithms they don't work. Therefore, I
will align them with the specification by taking in an enum. However,
since that's a bigger refactoring, I left that out of this PR (which is
already quite big).

The other trusted types support (createScript and createHTML) will also
be implemented separately.

Part of #36258

---------

Signed-off-by: Tim van der Lippe <tvanderlippe@gmail.com>
Signed-off-by: Tim van der Lippe <TimvdLippe@users.noreply.github.com>
Co-authored-by: Josh Matthews <josh@joshmatthews.net>
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Tim van der Lippe 2025-04-21 08:56:40 +02:00 committed by GitHub
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commit 6bb087e381
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27 changed files with 233 additions and 74 deletions

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@ -1,6 +1,3 @@
[style-blocked.html]
[Violated directive is script-src-elem.]
expected: FAIL
[document.styleSheets should contain an item for the blocked CSS.]
expected: FAIL