Implement initial version of ReportingObserver (#37905)

The specification moved around lately with how it defines its reports
and report bodies. They became dictionaries, but are currently missing
some fields [1].

Most tests won't be passing yet, since the `Reporting-Endpoints` header
isn't used yet. In fact, the specification leaves it up to the browser
to figure out when to run this task [2]. I am not sure if there some
background scheduling we can do here.

Confirmed with content-security-policy/reporting-api/
report-to-directive-allowed-in-meta.https.sub.html that the callback is
invoked. The test doesn't pass, since
the `describe_scripted_caller` is empty for HTML elements. Thus the
`source_file` is empty, whereas it should be equivalent to the current
document URL.

Part of #37328

Signed-off-by: Tim van der Lippe <tvanderlippe@gmail.com>

[1]: https://github.com/w3c/reporting/issues/286
[2]: https://w3c.github.io/reporting/#report-delivery

components/script/dom/csppolicyviolationreport.rs

@@ -7,11 +7,14 @@ use serde::Serialize;
 use servo_url::ServoUrl;
 
 use crate::conversions::Convert;
+use crate::dom::bindings::codegen::Bindings::CSPViolationReportBodyBinding::CSPViolationReportBody;
 use crate::dom::bindings::codegen::Bindings::EventBinding::EventInit;
+use crate::dom::bindings::codegen::Bindings::ReportingObserverBinding::ReportBody;
 use crate::dom::bindings::codegen::Bindings::SecurityPolicyViolationEventBinding::{
     SecurityPolicyViolationEventDisposition, SecurityPolicyViolationEventInit,
 };
 use crate::dom::globalscope::GlobalScope;
+use crate::dom::reportingobserver::ReportingObserver;
 
 #[derive(Clone, Debug, Serialize)]
 #[serde(rename_all = "camelCase")]
@@ -77,6 +80,28 @@ impl Convert<SecurityPolicyViolationEventInit> for SecurityPolicyViolationReport
     }
 }
 
+impl Convert<CSPViolationReportBody> for SecurityPolicyViolationReport {
+    fn convert(self) -> CSPViolationReportBody {
+        CSPViolationReportBody {
+            sample: self.sample.map(|s| s.into()),
+            blockedURL: Some(self.blocked_url.into()),
+            // TODO(37328): Why does /content-security-policy/reporting-api/
+            // report-to-directive-allowed-in-meta.https.sub.html expect this to be
+            // empty, yet the spec expects us to copy referrer from SecurityPolicyViolationReport
+            referrer: Some("".to_owned().into()),
+            statusCode: self.status_code,
+            documentURL: self.document_url.into(),
+            sourceFile: Some(self.source_file.into()),
+            effectiveDirective: self.effective_directive.into(),
+            lineNumber: Some(self.line_number),
+            columnNumber: Some(self.column_number),
+            originalPolicy: self.original_policy.into(),
+            disposition: self.disposition,
+            parent: ReportBody::empty(),
+        }
+    }
+}
+
 /// <https://www.w3.org/TR/CSP/#deprecated-serialize-violation>
 impl From<SecurityPolicyViolationReport> for CSPReportUriViolationReportBody {
     fn from(value: SecurityPolicyViolationReport) -> Self {
@@ -101,7 +126,7 @@ impl From<SecurityPolicyViolationReport> for CSPReportUriViolationReportBody {
             // Step 2.1. Set body["source-file'] to the result of
             // executing § 5.4 Strip URL for use in reports on violation’s source file.
             converted.source_file = ServoUrl::parse(&value.source_file)
-                .map(strip_url_for_reports)
+                .map(ReportingObserver::strip_url_for_reports)
                 .ok();
             // Step 2.2. Set body["line-number"] to violation’s line number.
             converted.line_number = Some(value.line_number);
@@ -187,15 +212,15 @@ impl CSPViolationReportBuilder {
         SecurityPolicyViolationReport {
             violated_directive: self.effective_directive.clone(),
             effective_directive: self.effective_directive.clone(),
-            document_url: strip_url_for_reports(global.get_url()),
+            document_url: ReportingObserver::strip_url_for_reports(global.get_url()),
             disposition: match self.report_only {
                 true => SecurityPolicyViolationEventDisposition::Report,
                 false => SecurityPolicyViolationEventDisposition::Enforce,
             },
             // https://w3c.github.io/webappsec-csp/#violation-referrer
             referrer: match global.get_referrer() {
-                Referrer::Client(url) => strip_url_for_reports(url),
-                Referrer::ReferrerUrl(url) => strip_url_for_reports(url),
+                Referrer::Client(url) => ReportingObserver::strip_url_for_reports(url),
+                Referrer::ReferrerUrl(url) => ReportingObserver::strip_url_for_reports(url),
                 _ => "".to_owned(),
             },
             sample: self.sample,
@@ -218,20 +243,3 @@ fn serialize_disposition<S: serde::Serializer>(
         SecurityPolicyViolationEventDisposition::Enforce => serializer.serialize_str("enforce"),
     }
 }
-
-/// <https://w3c.github.io/webappsec-csp/#strip-url-for-use-in-reports>
-fn strip_url_for_reports(mut url: ServoUrl) -> String {
-    let scheme = url.scheme();
-    // > Step 1: If url’s scheme is not an HTTP(S) scheme, then return url’s scheme.
-    if scheme != "https" && scheme != "http" {
-        return scheme.to_owned();
-    }
-    // > Step 2: Set url’s fragment to the empty string.
-    url.set_fragment(None);
-    // > Step 3: Set url’s username to the empty string.
-    let _ = url.set_username("");
-    // > Step 4: Set url’s password to the empty string.
-    let _ = url.set_password(None);
-    // > Step 5: Return the result of executing the URL serializer on url.
-    url.into_string()
-}

components/script/dom/globalscope.rs

@@ -76,6 +76,7 @@ use crate::dom::bindings::codegen::Bindings::NotificationBinding::NotificationPe
 use crate::dom::bindings::codegen::Bindings::PermissionStatusBinding::{
     PermissionName, PermissionState,
 };
+use crate::dom::bindings::codegen::Bindings::ReportingObserverBinding::Report;
 use crate::dom::bindings::codegen::Bindings::VoidFunctionBinding::VoidFunction;
 use crate::dom::bindings::codegen::Bindings::WindowBinding::WindowMethods;
 use crate::dom::bindings::codegen::Bindings::WorkerGlobalScopeBinding::WorkerGlobalScopeMethods;
@@ -109,6 +110,7 @@ use crate::dom::performance::Performance;
 use crate::dom::performanceobserver::VALID_ENTRY_TYPES;
 use crate::dom::promise::Promise;
 use crate::dom::readablestream::{CrossRealmTransformReadable, ReadableStream};
+use crate::dom::reportingobserver::ReportingObserver;
 use crate::dom::serviceworker::ServiceWorker;
 use crate::dom::serviceworkerregistration::ServiceWorkerRegistration;
 use crate::dom::trustedtypepolicyfactory::TrustedTypePolicyFactory;
@@ -3332,6 +3334,56 @@ impl GlobalScope {
         unreachable!();
     }
 
+    pub(crate) fn append_reporting_observer(&self, reporting_observer: &ReportingObserver) {
+        if let Some(window) = self.downcast::<Window>() {
+            return window.append_reporting_observer(DomRoot::from_ref(reporting_observer));
+        }
+        if let Some(worker) = self.downcast::<WorkerGlobalScope>() {
+            return worker.append_reporting_observer(DomRoot::from_ref(reporting_observer));
+        }
+        unreachable!();
+    }
+
+    pub(crate) fn remove_reporting_observer(&self, reporting_observer: &ReportingObserver) {
+        if let Some(window) = self.downcast::<Window>() {
+            return window.remove_reporting_observer(reporting_observer);
+        }
+        if let Some(worker) = self.downcast::<WorkerGlobalScope>() {
+            return worker.remove_reporting_observer(reporting_observer);
+        }
+        unreachable!();
+    }
+
+    pub(crate) fn registered_reporting_observers(&self) -> Vec<DomRoot<ReportingObserver>> {
+        if let Some(window) = self.downcast::<Window>() {
+            return window.registered_reporting_observers();
+        }
+        if let Some(worker) = self.downcast::<WorkerGlobalScope>() {
+            return worker.registered_reporting_observers();
+        }
+        unreachable!();
+    }
+
+    pub(crate) fn append_report(&self, report: Report) {
+        if let Some(window) = self.downcast::<Window>() {
+            return window.append_report(report);
+        }
+        if let Some(worker) = self.downcast::<WorkerGlobalScope>() {
+            return worker.append_report(report);
+        }
+        unreachable!();
+    }
+
+    pub(crate) fn buffered_reports(&self) -> Vec<Report> {
+        if let Some(window) = self.downcast::<Window>() {
+            return window.buffered_reports();
+        }
+        if let Some(worker) = self.downcast::<WorkerGlobalScope>() {
+            return worker.buffered_reports();
+        }
+        unreachable!();
+    }
+
     pub(crate) fn import_map(&self) -> Ref<'_, ImportMap> {
         self.import_map.borrow()
     }

components/script/dom/mod.rs

@@ -517,6 +517,7 @@ pub(crate) mod readablestreambyobrequest;
 pub(crate) mod readablestreamdefaultcontroller;
 pub(crate) mod readablestreamdefaultreader;
 pub(crate) mod readablestreamgenericreader;
+pub(crate) mod reportingobserver;
 pub(crate) mod request;
 pub(crate) mod resizeobserver;
 pub(crate) mod resizeobserverentry;

components/script/dom/reportingobserver.rs

@@ -0,0 +1,278 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+use std::cell::RefCell;
+use std::rc::Rc;
+use std::time::{SystemTime, UNIX_EPOCH};
+
+use dom_struct::dom_struct;
+use js::rust::HandleObject;
+use script_bindings::str::DOMString;
+use servo_url::ServoUrl;
+
+use crate::dom::bindings::callback::ExceptionHandling;
+use crate::dom::bindings::cell::DomRefCell;
+use crate::dom::bindings::codegen::Bindings::CSPViolationReportBodyBinding::CSPViolationReportBody;
+use crate::dom::bindings::codegen::Bindings::ReportingObserverBinding::{
+    Report, ReportList, ReportingObserverCallback, ReportingObserverMethods,
+    ReportingObserverOptions,
+};
+use crate::dom::bindings::num::Finite;
+use crate::dom::bindings::refcounted::Trusted;
+use crate::dom::bindings::reflector::{DomGlobal, Reflector, reflect_dom_object_with_proto};
+use crate::dom::bindings::root::DomRoot;
+use crate::dom::globalscope::GlobalScope;
+use crate::script_runtime::CanGc;
+
+#[dom_struct]
+pub(crate) struct ReportingObserver {
+    reflector_: Reflector,
+
+    #[ignore_malloc_size_of = "Rc has unclear ownership"]
+    callback: Rc<ReportingObserverCallback>,
+    buffered: RefCell<bool>,
+    types: DomRefCell<Vec<DOMString>>,
+    report_queue: DomRefCell<Vec<Report>>,
+}
+
+impl ReportingObserver {
+    fn new_inherited(
+        callback: Rc<ReportingObserverCallback>,
+        options: &ReportingObserverOptions,
+    ) -> Self {
+        Self {
+            reflector_: Reflector::new(),
+            callback,
+            buffered: RefCell::new(options.buffered),
+            types: DomRefCell::new(options.types.clone().unwrap_or_default()),
+            report_queue: Default::default(),
+        }
+    }
+
+    #[cfg_attr(crown, allow(crown::unrooted_must_root))]
+    pub(crate) fn new_with_proto(
+        callback: Rc<ReportingObserverCallback>,
+        options: &ReportingObserverOptions,
+        global: &GlobalScope,
+        proto: Option<HandleObject>,
+        can_gc: CanGc,
+    ) -> DomRoot<Self> {
+        reflect_dom_object_with_proto(
+            Box::new(Self::new_inherited(callback, options)),
+            global,
+            proto,
+            can_gc,
+        )
+    }
+
+    fn report_is_visible_to_reporting_observers(report: &Report) -> bool {
+        match report.type_.str() {
+            // https://w3c.github.io/webappsec-csp/#reporting
+            "csp-violation" => true,
+            _ => false,
+        }
+    }
+
+    /// <https://w3c.github.io/reporting/#add-report>
+    fn add_report_to_observer(&self, report: &Report) {
+        // Step 1. If report’s type is not visible to ReportingObservers, return.
+        if !Self::report_is_visible_to_reporting_observers(report) {
+            return;
+        }
+        // Step 2. If observer’s options has a non-empty types member which does not contain report’s type, return.
+        let types = self.types.borrow();
+        if !types.is_empty() && !types.contains(&report.type_) {
+            return;
+        }
+        // Step 3. Create a new Report r with type initialized to report’s type,
+        // url initialized to report’s url, and body initialized to report’s body.
+        let report = Report {
+            type_: report.type_.clone(),
+            url: report.url.clone(),
+            body: report.body.clone(),
+            destination: report.destination.clone(),
+            attempts: report.attempts,
+            timestamp: report.timestamp,
+        };
+        // Step 4. Append r to observer’s report queue.
+        self.report_queue.borrow_mut().push(report);
+        // Step 5. If the size of observer’s report queue is 1:
+        if self.report_queue.borrow().len() == 1 {
+            // Step 5.1. Let global be observer’s relevant global object.
+            let global = self.global();
+            // Step 5.2. Queue a task to § 4.4 Invoke reporting observers with notify list
+            // with a copy of global’s registered reporting observer list.
+            let observers_global = Trusted::new(&*global);
+            global.task_manager().dom_manipulation_task_source().queue(
+                task!(notify_reporting_observers: move || {
+                    Self::invoke_reporting_observers_with_notify_list(
+                        observers_global.root().registered_reporting_observers()
+                    );
+                }),
+            );
+        }
+    }
+
+    /// <https://w3c.github.io/reporting/#notify-observers>
+    pub(crate) fn notify_reporting_observers_on_scope(global: &GlobalScope, report: &Report) {
+        // Step 1. For each ReportingObserver observer registered with scope,
+        // execute § 4.3 Add report to observer on report and observer.
+        for observer in global.registered_reporting_observers().iter() {
+            observer.add_report_to_observer(report);
+        }
+        // Step 2. Append report to scope’s report buffer.
+        global.append_report(report.clone());
+        // Step 3. Let type be report’s type.
+        // TODO(37328)
+        // Step 4. If scope’s report buffer now contains more than 100 reports with
+        // type equal to type, remove the earliest item with type equal to type in the report buffer.
+        // TODO(37328)
+    }
+
+    /// <https://w3c.github.io/reporting/#invoke-observers>
+    fn invoke_reporting_observers_with_notify_list(notify_list: Vec<DomRoot<ReportingObserver>>) {
+        // Step 1. For each ReportingObserver observer in notify list:
+        for observer in notify_list.iter() {
+            // Step 1.1. If observer’s report queue is empty, then continue.
+            if observer.report_queue.borrow().is_empty() {
+                continue;
+            }
+            // Step 1.2. Let reports be a copy of observer’s report queue
+            // Step 1.3. Empty observer’s report queue
+            let reports = std::mem::take(&mut *observer.report_queue.borrow_mut());
+            // Step 1.4. Invoke observer’s callback with « reports, observer » and "report",
+            // and with observer as the callback this value.
+            let _ = observer.callback.Call_(
+                &**observer,
+                reports,
+                observer,
+                ExceptionHandling::Report,
+                CanGc::note(),
+            );
+        }
+    }
+
+    /// <https://w3c.github.io/reporting/#generate-a-report>
+    fn generate_a_report(
+        global: &GlobalScope,
+        type_: DOMString,
+        url: Option<ServoUrl>,
+        body: Option<CSPViolationReportBody>,
+        destination: DOMString,
+    ) -> Report {
+        // Step 2. If url was not provided by the caller, let url be settings’s creation URL.
+        let url = url.unwrap_or(global.creation_url().clone());
+        // Step 3. Set url’s username to the empty string, and its password to null.
+        // Step 4. Set report’s url to the result of executing the URL serializer
+        // on url with the exclude fragment flag set.
+        let url = Self::strip_url_for_reports(url).into();
+        // Step 1. Let report be a new report object with its values initialized as follows:
+        // Step 5. Return report.
+        Report {
+            type_,
+            url,
+            body,
+            destination,
+            timestamp: Finite::wrap(
+                SystemTime::now()
+                    .duration_since(UNIX_EPOCH)
+                    .unwrap_or_default()
+                    .as_millis() as f64,
+            ),
+            attempts: 0,
+        }
+    }
+
+    /// <https://w3c.github.io/reporting/#generate-and-queue-a-report>
+    pub(crate) fn generate_and_queue_a_report(
+        global: &GlobalScope,
+        type_: DOMString,
+        body: Option<CSPViolationReportBody>,
+        destination: DOMString,
+    ) {
+        // Step 1. Let settings be context’s relevant settings object.
+        // Step 2. Let report be the result of running generate a report with data, type, destination and settings.
+        let report = Self::generate_a_report(global, type_, None, body, destination);
+        // Step 3. If settings is given, then
+        // Step 3.1. Let scope be settings’s global object.
+        // Step 3.2. If scope is an object implementing WindowOrWorkerGlobalScope, then
+        // execute § 4.2 Notify reporting observers on scope with report with scope and report.
+        Self::notify_reporting_observers_on_scope(global, &report);
+        // Step 4. Append report to context’s reports.
+        global.append_report(report);
+    }
+
+    /// <https://w3c.github.io/webappsec-csp/#strip-url-for-use-in-reports>
+    pub(crate) fn strip_url_for_reports(mut url: ServoUrl) -> String {
+        let scheme = url.scheme();
+        // Step 1: If url’s scheme is not an HTTP(S) scheme, then return url’s scheme.
+        if scheme != "https" && scheme != "http" {
+            return scheme.to_owned();
+        }
+        // Step 2: Set url’s fragment to the empty string.
+        url.set_fragment(None);
+        // Step 3: Set url’s username to the empty string.
+        let _ = url.set_username("");
+        // Step 4: Set url’s password to the empty string.
+        let _ = url.set_password(None);
+        // Step 5: Return the result of executing the URL serializer on url.
+        url.into_string()
+    }
+}
+
+impl ReportingObserverMethods<crate::DomTypeHolder> for ReportingObserver {
+    /// <https://w3c.github.io/reporting/#dom-reportingobserver-reportingobserver>
+    fn Constructor(
+        global: &GlobalScope,
+        proto: Option<HandleObject>,
+        can_gc: CanGc,
+        callback: Rc<ReportingObserverCallback>,
+        options: &ReportingObserverOptions,
+    ) -> DomRoot<ReportingObserver> {
+        // Step 1. Create a new ReportingObserver object observer.
+        // Step 2. Set observer’s callback to callback.
+        // Step 3. Set observer’s options to options.
+        // Step 4. Return observer.
+        ReportingObserver::new_with_proto(callback, options, global, proto, can_gc)
+    }
+
+    /// <https://w3c.github.io/reporting/#dom-reportingobserver-observe>
+    fn Observe(&self) {
+        // Step 1. Let global be the be the relevant global object of this.
+        let global = &self.global();
+        // Step 2. Append this to the global’s registered reporting observer list.
+        global.append_reporting_observer(self);
+        // Step 3. If this’s buffered option is false, return.
+        if !*self.buffered.borrow() {
+            return;
+        }
+        // Step 4. Set this’s buffered option to false.
+        *self.buffered.borrow_mut() = false;
+        // Step 5.For each report in global’s report buffer, queue a task to
+        // execute § 4.3 Add report to observer with report and this.
+        for report in global.buffered_reports() {
+            // TODO(37328): Figure out how to put this in a task
+            self.add_report_to_observer(&report);
+        }
+    }
+
+    /// <https://w3c.github.io/reporting/#dom-reportingobserver-disconnect>
+    fn Disconnect(&self) {
+        // Step 1. If this is not registered, return.
+        // Skipped, as this is handled in `remove_reporting_observer`
+
+        // Step 2. Let global be the relevant global object of this.
+        let global = &self.global();
+        // Step 3. Remove this from global’s registered reporting observer list.
+        global.remove_reporting_observer(self);
+    }
+
+    /// <https://w3c.github.io/reporting/#dom-reportingobserver-takerecords>
+    fn TakeRecords(&self) -> ReportList {
+        // Step 1. Let reports be a copy of this’s report queue.
+        // Step 2. Empty this’s report queue.
+        // Step 3. Return reports.
+        std::mem::take(&mut *self.report_queue.borrow_mut())
+    }
+}

components/script/dom/window.rs

@@ -102,6 +102,7 @@ use crate::dom::bindings::codegen::Bindings::ImageBitmapBinding::{
     ImageBitmapOptions, ImageBitmapSource,
 };
 use crate::dom::bindings::codegen::Bindings::MediaQueryListBinding::MediaQueryList_Binding::MediaQueryListMethods;
+use crate::dom::bindings::codegen::Bindings::ReportingObserverBinding::Report;
 use crate::dom::bindings::codegen::Bindings::RequestBinding::RequestInit;
 use crate::dom::bindings::codegen::Bindings::VoidFunctionBinding::VoidFunction;
 use crate::dom::bindings::codegen::Bindings::WindowBinding::{
@@ -146,6 +147,7 @@ use crate::dom::navigator::Navigator;
 use crate::dom::node::{Node, NodeDamage, NodeTraits, from_untrusted_node_address};
 use crate::dom::performance::Performance;
 use crate::dom::promise::Promise;
+use crate::dom::reportingobserver::ReportingObserver;
 use crate::dom::screen::Screen;
 use crate::dom::selection::Selection;
 use crate::dom::shadowroot::ShadowRoot;
@@ -398,6 +400,12 @@ pub(crate) struct Window {
 
     /// <https://dom.spec.whatwg.org/#window-current-event>
     current_event: DomRefCell<Option<Dom<Event>>>,
+
+    /// <https://w3c.github.io/reporting/#windoworworkerglobalscope-registered-reporting-observer-list>
+    reporting_observer_list: DomRefCell<Vec<DomRoot<ReportingObserver>>>,
+
+    /// <https://w3c.github.io/reporting/#windoworworkerglobalscope-reports>
+    report_list: DomRefCell<Vec<Report>>,
 }
 
 impl Window {
@@ -502,6 +510,35 @@ impl Window {
         self.window_proxy.get().unwrap()
     }
 
+    pub(crate) fn append_reporting_observer(&self, reporting_observer: DomRoot<ReportingObserver>) {
+        self.reporting_observer_list
+            .borrow_mut()
+            .push(reporting_observer);
+    }
+
+    pub(crate) fn remove_reporting_observer(&self, reporting_observer: &ReportingObserver) {
+        if let Some(index) = self
+            .reporting_observer_list
+            .borrow()
+            .iter()
+            .position(|observer| &**observer == reporting_observer)
+        {
+            self.reporting_observer_list.borrow_mut().remove(index);
+        }
+    }
+
+    pub(crate) fn registered_reporting_observers(&self) -> Vec<DomRoot<ReportingObserver>> {
+        self.reporting_observer_list.borrow().clone()
+    }
+
+    pub(crate) fn append_report(&self, report: Report) {
+        self.report_list.borrow_mut().push(report);
+    }
+
+    pub(crate) fn buffered_reports(&self) -> Vec<Report> {
+        self.report_list.borrow().clone()
+    }
+
     /// Returns the window proxy if it has not been discarded.
     /// <https://html.spec.whatwg.org/multipage/#a-browsing-context-is-discarded>
     pub(crate) fn undiscarded_window_proxy(&self) -> Option<DomRoot<WindowProxy>> {
@@ -3106,6 +3143,8 @@ impl Window {
             current_event: DomRefCell::new(None),
             theme: Cell::new(theme),
             trusted_types: Default::default(),
+            reporting_observer_list: Default::default(),
+            report_list: Default::default(),
         });
 
         unsafe {

components/script/dom/workerglobalscope.rs

@@ -36,6 +36,7 @@ use crate::dom::bindings::cell::{DomRefCell, Ref};
 use crate::dom::bindings::codegen::Bindings::ImageBitmapBinding::{
     ImageBitmapOptions, ImageBitmapSource,
 };
+use crate::dom::bindings::codegen::Bindings::ReportingObserverBinding::Report;
 use crate::dom::bindings::codegen::Bindings::RequestBinding::RequestInit;
 use crate::dom::bindings::codegen::Bindings::VoidFunctionBinding::VoidFunction;
 use crate::dom::bindings::codegen::Bindings::WorkerBinding::WorkerType;
@@ -56,6 +57,7 @@ use crate::dom::globalscope::GlobalScope;
 use crate::dom::idbfactory::IDBFactory;
 use crate::dom::performance::Performance;
 use crate::dom::promise::Promise;
+use crate::dom::reportingobserver::ReportingObserver;
 use crate::dom::trustedscripturl::TrustedScriptURL;
 use crate::dom::trustedtypepolicyfactory::TrustedTypePolicyFactory;
 use crate::dom::types::ImageBitmap;
@@ -139,6 +141,12 @@ pub(crate) struct WorkerGlobalScope {
 
     #[no_trace]
     insecure_requests_policy: InsecureRequestsPolicy,
+
+    /// <https://w3c.github.io/reporting/#windoworworkerglobalscope-registered-reporting-observer-list>
+    reporting_observer_list: DomRefCell<Vec<DomRoot<ReportingObserver>>>,
+
+    /// <https://w3c.github.io/reporting/#windoworworkerglobalscope-reports>
+    report_list: DomRefCell<Vec<Report>>,
 }
 
 impl WorkerGlobalScope {
@@ -196,6 +204,8 @@ impl WorkerGlobalScope {
             timer_scheduler: RefCell::default(),
             insecure_requests_policy,
             trusted_types: Default::default(),
+            reporting_observer_list: Default::default(),
+            report_list: Default::default(),
         }
     }
 
@@ -259,6 +269,35 @@ impl WorkerGlobalScope {
         self.policy_container.borrow_mut().set_csp_list(csp_list);
     }
 
+    pub(crate) fn append_reporting_observer(&self, reporting_observer: DomRoot<ReportingObserver>) {
+        self.reporting_observer_list
+            .borrow_mut()
+            .push(reporting_observer);
+    }
+
+    pub(crate) fn remove_reporting_observer(&self, reporting_observer: &ReportingObserver) {
+        if let Some(index) = self
+            .reporting_observer_list
+            .borrow()
+            .iter()
+            .position(|observer| &**observer == reporting_observer)
+        {
+            self.reporting_observer_list.borrow_mut().remove(index);
+        }
+    }
+
+    pub(crate) fn registered_reporting_observers(&self) -> Vec<DomRoot<ReportingObserver>> {
+        self.reporting_observer_list.borrow().clone()
+    }
+
+    pub(crate) fn append_report(&self, report: Report) {
+        self.report_list.borrow_mut().push(report);
+    }
+
+    pub(crate) fn buffered_reports(&self) -> Vec<Report> {
+        self.report_list.borrow().clone()
+    }
+
     /// Get a mutable reference to the [`TimerScheduler`] for this [`ServiceWorkerGlobalScope`].
     pub(crate) fn timer_scheduler(&self) -> RefMut<TimerScheduler> {
         self.timer_scheduler.borrow_mut()

components/script/security_manager.rs

@@ -26,6 +26,7 @@ use crate::dom::csppolicyviolationreport::{
 use crate::dom::event::{Event, EventBubbles, EventCancelable, EventComposed};
 use crate::dom::eventtarget::EventTarget;
 use crate::dom::performanceresourcetiming::InitiatorType;
+use crate::dom::reportingobserver::ReportingObserver;
 use crate::dom::securitypolicyviolationevent::SecurityPolicyViolationEvent;
 use crate::dom::types::GlobalScope;
 use crate::fetch::create_a_potential_cors_request;
@@ -156,6 +157,24 @@ impl TaskOnce for CSPViolationReportTask {
         {
             self.post_csp_violation_to_report_uri(report_uri_directive);
         }
+        // Step 3.5. If violation’s policy’s directive set contains a directive named "report-to" directive:
+        if let Some(report_to_directive) = self
+            .violation_policy
+            .directive_set
+            .iter()
+            .find(|directive| directive.name == "report-to")
+        {
+            // Step 3.5.1. Let body be a new CSPViolationReportBody, initialized as follows:
+            let body = self.violation_report.clone().convert();
+            // Step 3.5.2. Let settings object be violation’s global object’s relevant settings object.
+            // Step 3.5.3. Generate and queue a report with the following arguments:
+            ReportingObserver::generate_and_queue_a_report(
+                &self.global.root(),
+                "csp-violation".into(),
+                Some(body),
+                report_to_directive.value.join(" ").into(),
+            )
+        }
     }
 }
 

components/script_bindings/codegen/Bindings.conf

@@ -799,6 +799,10 @@ Dictionaries = {
     'derives': ['Clone', 'Copy'],
 },
 
+'CSPViolationReportBody': {
+    'derives': ['Clone', 'MallocSizeOf'],
+},
+
 'FontFaceDescriptors': {
     'derives': ['Clone', 'MallocSizeOf']
 },
@@ -831,6 +835,14 @@ Dictionaries = {
     'derives': ['Clone'],
 },
 
+'Report': {
+    'derives': ['Clone', 'MallocSizeOf'],
+},
+
+'ReportBody': {
+    'derives': ['Clone', 'MallocSizeOf'],
+},
+
 'StereoPannerOptions': {
     'derives': ['Clone', 'Copy'],
 },

components/script_bindings/webidls/CSPViolationReportBody.webidl

@@ -0,0 +1,19 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+// https://w3c.github.io/webappsec-csp/#dictdef-cspviolationreportbody
+
+dictionary CSPViolationReportBody : ReportBody {
+  required USVString documentURL;
+  USVString referrer;
+  USVString blockedURL;
+  required DOMString effectiveDirective;
+  required DOMString originalPolicy;
+  USVString sourceFile;
+  DOMString sample;
+  required SecurityPolicyViolationEventDisposition disposition;
+  required unsigned short statusCode;
+  unsigned long lineNumber;
+  unsigned long columnNumber;
+};

components/script_bindings/webidls/ReportingObserver.webidl

@@ -0,0 +1,35 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+// https://w3c.github.io/reporting/#interface-reporting-observer
+
+dictionary ReportBody {
+};
+
+dictionary Report {
+  required DOMString type;
+  required DOMString url;
+  required DOMString destination;
+  required double timestamp;
+  required long attempts;
+  // TODO(37328): Change this to parent class ReportBody
+  CSPViolationReportBody body;
+};
+
+[Exposed=(Window,Worker)]
+interface ReportingObserver {
+  constructor(ReportingObserverCallback callback, optional ReportingObserverOptions options = {});
+  undefined observe();
+  undefined disconnect();
+  ReportList takeRecords();
+};
+
+callback ReportingObserverCallback = undefined (sequence<Report> reports, ReportingObserver observer);
+
+dictionary ReportingObserverOptions {
+  sequence<DOMString> types;
+  boolean buffered = false;
+};
+
+typedef sequence<Report> ReportList;

tests/wpt/meta/content-security-policy/reporting/post-redirect-stacktrace.https.html.ini

@@ -1,5 +1,5 @@
 [post-redirect-stacktrace.https.html]
-  expected: ERROR
+  expected: TIMEOUT
   [StackTrace do not leak cross-origin post-redirect URL]
     expected: FAIL
 

tests/wpt/meta/fetch/stale-while-revalidate/revalidate-not-blocked-by-csp.html.ini

@@ -1,4 +0,0 @@
-[revalidate-not-blocked-by-csp.html]
-  [Request revalidation aren't blocked by CSP]
-    expected: FAIL
-

tests/wpt/meta/html/document-isolation-policy/reporting-subresource-corp.tentative.https.html.ini

@@ -1,9 +1,10 @@
 [reporting-subresource-corp.tentative.https.html]
+  expected: TIMEOUT
   [[document\] blocked due to DIP]
-    expected: FAIL
+    expected: TIMEOUT
 
   [[document\] blocked during redirect]
-    expected: FAIL
+    expected: NOTRUN
 
   [destination: script]
     expected: FAIL
@@ -12,22 +13,22 @@
     expected: FAIL
 
   [[dedicated worker\] blocked due to DIP]
-    expected: FAIL
+    expected: NOTRUN
 
   [[dedicated worker\] blocked during redirect]
-    expected: FAIL
+    expected: NOTRUN
 
   [[shared worker\] same-origin]
-    expected: FAIL
+    expected: NOTRUN
 
   [[shared worker\] blocked by CORP: same-origin]
     expected: FAIL
 
   [[shared worker\] blocked due to DIP]
-    expected: FAIL
+    expected: NOTRUN
 
   [[shared worker\] blocked during redirect]
-    expected: FAIL
+    expected: NOTRUN
 
   [[between service worker and page\] same-origin]
     expected: FAIL
@@ -42,10 +43,13 @@
     expected: FAIL
 
   [[document with service worker\] same-origin]
-    expected: FAIL
+    expected: NOTRUN
 
   [[document with service worker\] blocked due to DIP]
-    expected: FAIL
+    expected: NOTRUN
 
   [[document with service worker\] blocked during redirect]
-    expected: FAIL
+    expected: NOTRUN
+
+  [[dedicated worker\] same-origin]
+    expected: NOTRUN

tests/wpt/meta/reporting/document-reporting-bypass-report-to.https.sub.html.ini

@@ -1,6 +1,7 @@
 [document-reporting-bypass-report-to.https.sub.html]
+  expected: TIMEOUT
   [document policy violation observed]
-    expected: FAIL
+    expected: TIMEOUT
 
   [Only the Reporting-Endpoints configured endpoint received reports.]
-    expected: FAIL
+    expected: NOTRUN

tests/wpt/meta/reporting/document-reporting-named-endpoints.https.sub.html.ini

@@ -1,9 +1,7 @@
 [document-reporting-named-endpoints.https.sub.html]
-  [csp violation report observed]
-    expected: FAIL
-
+  expected: TIMEOUT
   [document policy violation observed]
-    expected: FAIL
+    expected: TIMEOUT
 
   [Reporting endpoints received reports.]
-    expected: FAIL
+    expected: NOTRUN

tests/wpt/meta/reporting/document-reporting-override-endpoint.https.sub.html.ini

@@ -1,6 +1,7 @@
 [document-reporting-override-endpoint.https.sub.html]
+  expected: TIMEOUT
   [document policy violation observed]
-    expected: FAIL
+    expected: TIMEOUT
 
   [Only the second reporting endpoint received reports.]
-    expected: FAIL
+    expected: NOTRUN

tests/wpt/meta/reporting/idlharness.any.js.ini

@@ -50,33 +50,6 @@
   [Report interface: attribute body]
     expected: FAIL
 
-  [ReportingObserver interface: existence and properties of interface object]
-    expected: FAIL
-
-  [ReportingObserver interface object length]
-    expected: FAIL
-
-  [ReportingObserver interface object name]
-    expected: FAIL
-
-  [ReportingObserver interface: existence and properties of interface prototype object]
-    expected: FAIL
-
-  [ReportingObserver interface: existence and properties of interface prototype object's "constructor" property]
-    expected: FAIL
-
-  [ReportingObserver interface: existence and properties of interface prototype object's @@unscopables property]
-    expected: FAIL
-
-  [ReportingObserver interface: operation observe()]
-    expected: FAIL
-
-  [ReportingObserver interface: operation disconnect()]
-    expected: FAIL
-
-  [ReportingObserver interface: operation takeRecords()]
-    expected: FAIL
-
 
 [idlharness.any.worker.html]
   [ReportBody interface: existence and properties of interface object]
@@ -129,30 +102,3 @@
 
   [Report interface: attribute body]
     expected: FAIL
-
-  [ReportingObserver interface: existence and properties of interface object]
-    expected: FAIL
-
-  [ReportingObserver interface object length]
-    expected: FAIL
-
-  [ReportingObserver interface object name]
-    expected: FAIL
-
-  [ReportingObserver interface: existence and properties of interface prototype object]
-    expected: FAIL
-
-  [ReportingObserver interface: existence and properties of interface prototype object's "constructor" property]
-    expected: FAIL
-
-  [ReportingObserver interface: existence and properties of interface prototype object's @@unscopables property]
-    expected: FAIL
-
-  [ReportingObserver interface: operation observe()]
-    expected: FAIL
-
-  [ReportingObserver interface: operation disconnect()]
-    expected: FAIL
-
-  [ReportingObserver interface: operation takeRecords()]
-    expected: FAIL

tests/wpt/mozilla/meta/MANIFEST.json

@@ -13640,14 +13640,14 @@
      ]
     ],
     "interfaces.https.html": [
-     "eee8c799727b91e00b512795756b693a5f121f86",
+     "8a9345525360e7a7ce69e84e394b65a4cbc0ab34",
      [
       null,
       {}
      ]
     ],
     "interfaces.worker.js": [
-     "e86f34f261442aeaa7074c525fb4b1206219769d",
+     "f217fd8fb6b46144bc3576a081cc6ce5db3129d5",
      [
       "mozilla/interfaces.worker.html",
       {}

tests/wpt/mozilla/tests/mozilla/interfaces.https.html

@@ -293,6 +293,7 @@ test_interfaces([
   "ReadableStreamBYOBReader",
   "ReadableByteStreamController",
   "ReadableStreamBYOBRequest",
+  "ReportingObserver",
   "Request",
   "ResizeObserver",
   "ResizeObserverEntry",

tests/wpt/mozilla/tests/mozilla/interfaces.worker.js

@@ -103,6 +103,7 @@ test_interfaces([
   "ReadableStreamBYOBReader",
   "ReadableByteStreamController",
   "ReadableStreamBYOBRequest",
+  "ReportingObserver",
   "Request",
   "Response",
   "SecurityPolicyViolationEvent",