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Correct event_target for CSP violations (#36887)

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All logic is implemented in `report_csp_violations` to avoid
pulling in various element-logic into SecurityManager.

Update the `icon-blocked.sub.html` WPT test to ensure that
the document is the correct target (verified in Firefox and Chrome).

Fixes #36806

Signed-off-by: Tim van der Lippe <tvanderlippe@gmail.com>
This commit is contained in:
Tim van der Lippe 2025-05-08 12:46:31 +02:00 • committed by GitHub
parent f3f4cc5500
commit b6b80d4f6f
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GPG key ID: B5690EEEBB952194
56 changed files with 167 additions and 193 deletions
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46
components/script/dom/globalscope.rs
View file

@ -106,6 +106,7 @@ use crate::dom::crypto::Crypto;
use crate::dom::dedicatedworkerglobalscope::{
DedicatedWorkerControlMsg, DedicatedWorkerGlobalScope,
};
use crate::dom::element::Element;
use crate::dom::errorevent::ErrorEvent;
use crate::dom::event::{Event, EventBubbles, EventCancelable, EventStatus};
use crate::dom::eventsource::EventSource;
@ -115,6 +116,7 @@ use crate::dom::htmlscriptelement::{ScriptId, SourceCode};
use crate::dom::imagebitmap::ImageBitmap;
use crate::dom::messageevent::MessageEvent;
use crate::dom::messageport::MessagePort;
use crate::dom::node::Node;
use crate::dom::paintworkletglobalscope::PaintWorkletGlobalScope;
use crate::dom::performance::Performance;
use crate::dom::performanceobserver::VALID_ENTRY_TYPES;
@ -2930,7 +2932,7 @@ impl GlobalScope {
let (is_js_evaluation_allowed, violations) = csp_list.is_js_evaluation_allowed(source);
self.report_csp_violations(violations);
self.report_csp_violations(violations, None);
is_js_evaluation_allowed == CheckResult::Allowed
}
@ -2957,7 +2959,7 @@ impl GlobalScope {
let (result, violations) =
csp_list.should_navigation_request_be_blocked(&request, NavigationCheckType::Other);
self.report_csp_violations(violations);
self.report_csp_violations(violations, None);
result == CheckResult::Blocked
}
@ -3444,8 +3446,13 @@ impl GlobalScope {
unreachable!();
}
/// <https://www.w3.org/TR/CSP/#report-violation>
#[allow(unsafe_code)]
pub(crate) fn report_csp_violations(&self, violations: Vec<Violation>) {
pub(crate) fn report_csp_violations(
&self,
violations: Vec<Violation>,
element: Option<&Element>,
) {
let scripted_caller =
unsafe { describe_scripted_caller(*GlobalScope::get_cx()) }.unwrap_or_default();
for violation in violations {
@ -3471,7 +3478,38 @@ impl GlobalScope {
.line_number(scripted_caller.line)
.column_number(scripted_caller.col + 1)
.build(self);
let task = CSPViolationReportTask::new(self, report);
// Step 1: Let global be violation’s global object.
// We use `self` as `global`;
// Step 2: Let target be violation’s element.
let target = element.and_then(|event_target| {
// Step 3.1: If target is not null, and global is a Window,
// and target’s shadow-including root is not global’s associated Document, set target to null.
if let Some(window) = self.downcast::<Window>() {
if !window
.Document()
.upcast::<Node>()
.is_shadow_including_inclusive_ancestor_of(event_target.upcast())
{
return None;
}
}
Some(event_target)
});
let target = match target {
// Step 3.2: If target is null:
None => {
// Step 3.2.2: If target is a Window, set target to target’s associated Document.
if let Some(window) = self.downcast::<Window>() {
Trusted::new(window.Document().upcast())
} else {
// Step 3.2.1: Set target to violation’s global object.
Trusted::new(self.upcast())
}
},
Some(event_target) => Trusted::new(event_target.upcast()),
};
// Step 3: Queue a task to run the following steps:
let task = CSPViolationReportTask::new(Trusted::new(self), target, report);
self.task_manager()
.dom_manipulation_task_source()
.queue(task);