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script: Implement document's active sandboxing flag set (#39079)

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Implements document's active sandboxing flags. These are currently
populated only from CSP-derived sandboxing flags for a new document,
when defined in the CSP.

Testing: 1 new pass, and some new wpt's are added to test points in the
spec where these flags influence behaviour.

Signed-off-by: Shane Handley <shanehandley@fastmail.com>
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shanehandley 2025-09-05 15:02:23 +10:00 • committed by GitHub
parent f722419861
commit 989c0d8994
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10 changed files with 156 additions and 15 deletions
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13
components/script/dom/html/htmlformelement.rs
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@ -6,6 +6,7 @@ use std::borrow::ToOwned;
use std::cell::Cell;
use constellation_traits::{LoadData, LoadOrigin, NavigationHistoryBehavior};
use content_security_policy::sandboxing_directive::SandboxingFlagSet;
use dom_struct::dom_struct;
use encoding_rs::{Encoding, UTF_8};
use headers::{ContentType, HeaderMapExt};
@ -739,10 +740,18 @@ impl HTMLFormElement {
if self.constructing_entry_list.get() {
return;
}
// Step 3
// Step 3. Let form document be form's node document.
let doc = self.owner_document();
// Step 4. If form document's active sandboxing flag set has its sandboxed forms browsing
// context flag set, then return.
if doc.has_active_sandboxing_flag(SandboxingFlagSet::SANDBOXED_FORMS_BROWSING_CONTEXT_FLAG)
{
return;
}
let base = doc.base_url();
// TODO: Handle browsing contexts (Step 4, 5)
// TODO: Handle browsing contexts (Step 5)
// Step 6
if submit_method_flag == SubmittedFrom::NotFromForm {
// Step 6.1