mirror of
https://github.com/servo/servo.git
synced 2025-08-03 04:30:10 +01:00
Allow browsing contexts to resolve to cross-origin windows.
This commit is contained in:
parent
4a0b730caf
commit
e8d765557f
11 changed files with 598 additions and 16 deletions
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@ -3,13 +3,17 @@
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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use dom::bindings::conversions::{ToJSValConvertible, root_from_handleobject};
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use dom::bindings::error::{Error, throw_dom_exception};
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use dom::bindings::inheritance::Castable;
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use dom::bindings::js::{JS, Root, RootedReference};
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use dom::bindings::proxyhandler::{fill_property_descriptor, get_property_descriptor};
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use dom::bindings::reflector::{DomObject, Reflector};
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use dom::bindings::trace::JSTraceable;
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use dom::bindings::utils::WindowProxyHandler;
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use dom::bindings::utils::get_array_index_from_id;
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use dom::dissimilaroriginwindow::DissimilarOriginWindow;
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use dom::element::Element;
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use dom::globalscope::GlobalScope;
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use dom::window::Window;
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use js::JSCLASS_IS_GLOBAL;
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use js::glue::{CreateWrapperProxyHandler, ProxyTraps, NewWindowProxy};
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@ -18,12 +22,13 @@ use js::jsapi::{Handle, HandleId, HandleObject, HandleValue};
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use js::jsapi::{JSAutoCompartment, JSContext, JSErrNum, JSFreeOp, JSObject};
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use js::jsapi::{JSPROP_READONLY, JSTracer, JS_DefinePropertyById};
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use js::jsapi::{JS_ForwardGetPropertyTo, JS_ForwardSetPropertyTo};
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use js::jsapi::{JS_GetOwnPropertyDescriptorById, JS_HasPropertyById};
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use js::jsapi::{JS_TransplantObject, SetWindowProxy};
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use js::jsapi::{JS_GetOwnPropertyDescriptorById, JS_HasPropertyById, JS_HasOwnPropertyById};
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use js::jsapi::{JS_IsExceptionPending, JS_TransplantObject, SetWindowProxy};
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use js::jsapi::{MutableHandle, MutableHandleObject, MutableHandleValue};
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use js::jsapi::{ObjectOpResult, PropertyDescriptor};
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use js::jsval::{UndefinedValue, PrivateValue};
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use js::rust::get_object_class;
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use msg::constellation_msg::PipelineId;
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use std::cell::Cell;
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use std::ptr;
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@ -39,6 +44,13 @@ pub struct BrowsingContext {
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/// changes Window.
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reflector: Reflector,
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/// The pipeline id of the currently active document.
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/// May be None, when the currently active document is in another script thread.
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/// We do not try to keep the pipeline id for documents in other threads,
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/// as this would require the constellation notifying many script threads about
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/// the change, which could be expensive.
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currently_active: Cell<Option<PipelineId>>,
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/// Has this browsing context been discarded?
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discarded: Cell<bool>,
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@ -47,9 +59,10 @@ pub struct BrowsingContext {
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}
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impl BrowsingContext {
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pub fn new_inherited(frame_element: Option<&Element>) -> BrowsingContext {
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pub fn new_inherited(currently_active: PipelineId, frame_element: Option<&Element>) -> BrowsingContext {
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BrowsingContext {
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reflector: Reflector::new(),
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currently_active: Cell::new(Some(currently_active)),
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discarded: Cell::new(false),
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frame_element: frame_element.map(JS::from_ref),
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}
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@ -72,7 +85,8 @@ impl BrowsingContext {
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assert!(!window_proxy.is_null());
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// Create a new browsing context.
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let mut browsing_context = box BrowsingContext::new_inherited(frame_element);
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let currently_active = window.global().pipeline_id();
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let mut browsing_context = box BrowsingContext::new_inherited(currently_active, frame_element);
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// The window proxy owns the browsing context.
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// When we finalize the window proxy, it drops the browsing context it owns.
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@ -104,10 +118,10 @@ impl BrowsingContext {
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/// Change the Window that this browsing context's WindowProxy resolves to.
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// TODO: support setting the window proxy to a dummy value,
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// to handle the case when the active document is in another script thread.
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pub fn set_window_proxy(&self, window: &Window) {
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fn set_window_proxy(&self, window: &GlobalScope, traps: &ProxyTraps) {
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unsafe {
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debug!("Setting window proxy of {:p}.", self);
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let WindowProxyHandler(handler) = window.windowproxy_handler();
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let handler = CreateWrapperProxyHandler(traps);
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assert!(!handler.is_null());
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let cx = window.get_cx();
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@ -144,6 +158,22 @@ impl BrowsingContext {
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}
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}
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pub fn set_currently_active(&self, window: &Window) {
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let globalscope = window.upcast();
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self.set_window_proxy(&*globalscope, &PROXY_HANDLER);
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self.currently_active.set(Some(globalscope.pipeline_id()));
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}
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pub fn unset_currently_active(&self) {
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let window = DissimilarOriginWindow::new(self);
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self.set_window_proxy(&*window.upcast(), &XORIGIN_PROXY_HANDLER);
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self.currently_active.set(None);
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}
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pub fn currently_active(&self) -> Option<PipelineId> {
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self.currently_active.get()
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}
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pub fn window_proxy(&self) -> *mut JSObject {
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let window_proxy = self.reflector.get_jsobject();
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assert!(!window_proxy.get().is_null());
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@ -332,6 +362,145 @@ static PROXY_HANDLER: ProxyTraps = ProxyTraps {
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isConstructor: None,
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};
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#[allow(unsafe_code)]
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pub fn new_window_proxy_handler() -> WindowProxyHandler {
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unsafe {
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WindowProxyHandler(CreateWrapperProxyHandler(&PROXY_HANDLER))
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}
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}
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// The proxy traps for cross-origin windows.
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// These traps often throw security errors, and only pass on calls to methods
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// defined in the DissimilarOriginWindow IDL.
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#[allow(unsafe_code)]
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unsafe fn throw_security_error(cx: *mut JSContext) -> bool {
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if !JS_IsExceptionPending(cx) {
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let global = GlobalScope::from_context(cx);
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throw_dom_exception(cx, &*global, Error::Security);
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}
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false
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}
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#[allow(unsafe_code)]
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unsafe extern "C" fn has_xorigin(cx: *mut JSContext,
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proxy: HandleObject,
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id: HandleId,
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bp: *mut bool)
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-> bool
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{
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rooted!(in(cx) let target = GetProxyPrivate(*proxy.ptr).to_object());
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let mut found = false;
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JS_HasOwnPropertyById(cx, target.handle(), id, &mut found);
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if found {
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*bp = true;
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true
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} else {
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throw_security_error(cx)
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}
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}
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#[allow(unsafe_code)]
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unsafe extern "C" fn get_xorigin(cx: *mut JSContext,
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proxy: HandleObject,
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receiver: HandleValue,
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id: HandleId,
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vp: MutableHandleValue)
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-> bool
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{
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let mut found = false;
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has_xorigin(cx, proxy, id, &mut found);
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found && get(cx, proxy, receiver, id, vp)
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}
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#[allow(unsafe_code)]
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unsafe extern "C" fn set_xorigin(cx: *mut JSContext,
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_: HandleObject,
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_: HandleId,
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_: HandleValue,
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_: HandleValue,
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_: *mut ObjectOpResult)
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-> bool
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{
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throw_security_error(cx)
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}
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#[allow(unsafe_code)]
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unsafe extern "C" fn delete_xorigin(cx: *mut JSContext,
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_: HandleObject,
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_: HandleId,
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_: *mut ObjectOpResult)
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-> bool
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{
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throw_security_error(cx)
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}
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#[allow(unsafe_code)]
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unsafe extern "C" fn getOwnPropertyDescriptor_xorigin(cx: *mut JSContext,
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proxy: HandleObject,
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id: HandleId,
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desc: MutableHandle<PropertyDescriptor>)
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-> bool
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{
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let mut found = false;
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has_xorigin(cx, proxy, id, &mut found);
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found && getOwnPropertyDescriptor(cx, proxy, id, desc)
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}
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#[allow(unsafe_code)]
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unsafe extern "C" fn defineProperty_xorigin(cx: *mut JSContext,
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_: HandleObject,
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_: HandleId,
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_: Handle<PropertyDescriptor>,
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_: *mut ObjectOpResult)
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-> bool
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{
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throw_security_error(cx)
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}
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#[allow(unsafe_code)]
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unsafe extern "C" fn preventExtensions_xorigin(cx: *mut JSContext,
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_: HandleObject,
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_: *mut ObjectOpResult)
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-> bool
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{
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throw_security_error(cx)
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}
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static XORIGIN_PROXY_HANDLER: ProxyTraps = ProxyTraps {
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enter: None,
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getOwnPropertyDescriptor: Some(getOwnPropertyDescriptor_xorigin),
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defineProperty: Some(defineProperty_xorigin),
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ownPropertyKeys: None,
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delete_: Some(delete_xorigin),
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enumerate: None,
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getPrototypeIfOrdinary: None,
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preventExtensions: Some(preventExtensions_xorigin),
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isExtensible: None,
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has: Some(has_xorigin),
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get: Some(get_xorigin),
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set: Some(set_xorigin),
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call: None,
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construct: None,
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getPropertyDescriptor: Some(getOwnPropertyDescriptor_xorigin),
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hasOwn: Some(has_xorigin),
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getOwnEnumerablePropertyKeys: None,
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nativeCall: None,
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hasInstance: None,
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objectClassIs: None,
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className: None,
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fun_toString: None,
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boxedValue_unbox: None,
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defaultValue: None,
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trace: Some(trace),
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finalize: Some(finalize),
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objectMoved: None,
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isCallable: None,
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isConstructor: None,
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};
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// How WindowProxy objects are garbage collected.
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#[allow(unsafe_code)]
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unsafe extern fn finalize(_fop: *mut JSFreeOp, obj: *mut JSObject) {
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let this = GetProxyExtra(obj, 0).to_private() as *mut BrowsingContext;
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@ -354,9 +523,3 @@ unsafe extern fn trace(trc: *mut JSTracer, obj: *mut JSObject) {
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(*this).trace(trc);
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}
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#[allow(unsafe_code)]
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pub fn new_window_proxy_handler() -> WindowProxyHandler {
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unsafe {
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WindowProxyHandler(CreateWrapperProxyHandler(&PROXY_HANDLER))
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}
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}
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80
components/script/dom/dissimilaroriginlocation.rs
Normal file
80
components/script/dom/dissimilaroriginlocation.rs
Normal file
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@ -0,0 +1,80 @@
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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use dom::bindings::codegen::Bindings::DissimilarOriginLocationBinding;
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use dom::bindings::codegen::Bindings::DissimilarOriginLocationBinding::DissimilarOriginLocationMethods;
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use dom::bindings::error::{Error, ErrorResult, Fallible};
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use dom::bindings::js::{JS, Root};
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use dom::bindings::reflector::Reflector;
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use dom::bindings::reflector::reflect_dom_object;
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use dom::bindings::str::DOMString;
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use dom::bindings::str::USVString;
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use dom::dissimilaroriginwindow::DissimilarOriginWindow;
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/// Represents a dissimilar-origin `Location` that exists in another script thread.
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///
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/// Since the `Location` is in a different script thread, we cannot access it
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/// directly, but some of its accessors (for example setting `location.href`)
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/// still need to function.
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#[dom_struct]
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pub struct DissimilarOriginLocation {
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/// The reflector. Once we have XOWs, this will have a cross-origin
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/// wrapper placed around it.
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reflector: Reflector,
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/// The window associated with this location.
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window: JS<DissimilarOriginWindow>,
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}
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impl DissimilarOriginLocation {
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#[allow(unrooted_must_root)]
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fn new_inherited(window: &DissimilarOriginWindow) -> DissimilarOriginLocation {
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DissimilarOriginLocation {
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reflector: Reflector::new(),
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window: JS::from_ref(window),
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}
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}
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pub fn new(window: &DissimilarOriginWindow) -> Root<DissimilarOriginLocation> {
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reflect_dom_object(box DissimilarOriginLocation::new_inherited(window),
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window,
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DissimilarOriginLocationBinding::Wrap)
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}
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}
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impl DissimilarOriginLocationMethods for DissimilarOriginLocation {
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// https://html.spec.whatwg.org/multipage/#dom-location-href
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fn GetHref(&self) -> Fallible<USVString> {
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Err(Error::Security)
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}
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// https://html.spec.whatwg.org/multipage/#dom-location-href
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fn SetHref(&self, _: USVString) -> ErrorResult {
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// TODO: setting href on a cross-origin window should succeed?
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Err(Error::Security)
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}
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// https://html.spec.whatwg.org/multipage/#dom-location-assign
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fn Assign(&self, _: USVString) -> Fallible<()> {
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// TODO: setting href on a cross-origin window should succeed?
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Err(Error::Security)
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}
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// https://html.spec.whatwg.org/multipage/#dom-location-replace
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fn Replace(&self, _: USVString) -> Fallible<()> {
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// TODO: replacing href on a cross-origin window should succeed?
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Err(Error::Security)
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}
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// https://html.spec.whatwg.org/multipage/#dom-location-reload
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fn Reload(&self) -> Fallible<()> {
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Err(Error::Security)
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}
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// https://html.spec.whatwg.org/multipage/#dom-location-href
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fn Stringifier(&self) -> Fallible<DOMString> {
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Err(Error::Security)
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}
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}
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140
components/script/dom/dissimilaroriginwindow.rs
Normal file
140
components/script/dom/dissimilaroriginwindow.rs
Normal file
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@ -0,0 +1,140 @@
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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use dom::bindings::codegen::Bindings::DissimilarOriginWindowBinding;
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use dom::bindings::codegen::Bindings::DissimilarOriginWindowBinding::DissimilarOriginWindowMethods;
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use dom::bindings::js::{JS, MutNullableJS, Root};
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use dom::bindings::reflector::DomObject;
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use dom::bindings::str::DOMString;
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use dom::browsingcontext::BrowsingContext;
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use dom::dissimilaroriginlocation::DissimilarOriginLocation;
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use dom::globalscope::GlobalScope;
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use ipc_channel::ipc;
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use js::jsapi::{JSContext, HandleValue};
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use js::jsval::{JSVal, UndefinedValue};
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use msg::constellation_msg::PipelineId;
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/// Represents a dissimilar-origin `Window` that exists in another script thread.
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///
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/// Since the `Window` is in a different script thread, we cannot access it
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/// directly, but some of its accessors (for example `window.parent`)
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/// still need to function.
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///
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/// In `browsingcontext.rs`, we create a custom window proxy for these windows,
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/// that throws security exceptions for most accessors. This is not a replacement
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/// for XOWs, but provides belt-and-braces security.
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#[dom_struct]
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pub struct DissimilarOriginWindow {
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/// The global for this window.
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globalscope: GlobalScope,
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/// The browsing context this window is part of.
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browsing_context: JS<BrowsingContext>,
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/// The location of this window, initialized lazily.
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location: MutNullableJS<DissimilarOriginLocation>,
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}
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impl DissimilarOriginWindow {
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#[allow(unsafe_code)]
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pub fn new(browsing_context: &BrowsingContext) -> Root<DissimilarOriginWindow> {
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let globalscope = browsing_context.global();
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let cx = globalscope.get_cx();
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// Any timer events fired on this window are ignored.
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let (timer_event_chan, _) = ipc::channel().unwrap();
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let win = box DissimilarOriginWindow {
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globalscope: GlobalScope::new_inherited(PipelineId::new(),
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globalscope.devtools_chan().cloned(),
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globalscope.mem_profiler_chan().clone(),
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globalscope.time_profiler_chan().clone(),
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globalscope.constellation_chan().clone(),
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globalscope.scheduler_chan().clone(),
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globalscope.resource_threads().clone(),
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timer_event_chan),
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browsing_context: JS::from_ref(browsing_context),
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location: MutNullableJS::new(None),
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};
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unsafe { DissimilarOriginWindowBinding::Wrap(cx, win) }
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}
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}
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impl DissimilarOriginWindowMethods for DissimilarOriginWindow {
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// https://html.spec.whatwg.org/multipage/#dom-window
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fn Window(&self) -> Root<BrowsingContext> {
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Root::from_ref(&*self.browsing_context)
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}
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// https://html.spec.whatwg.org/multipage/#dom-self
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fn Self_(&self) -> Root<BrowsingContext> {
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Root::from_ref(&*self.browsing_context)
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}
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// https://html.spec.whatwg.org/multipage/#dom-frames
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fn Frames(&self) -> Root<BrowsingContext> {
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Root::from_ref(&*self.browsing_context)
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}
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// https://html.spec.whatwg.org/multipage/#dom-parent
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fn GetParent(&self) -> Option<Root<BrowsingContext>> {
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// TODO: implement window.parent correctly for x-origin windows.
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Some(Root::from_ref(&*self.browsing_context))
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}
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// https://html.spec.whatwg.org/multipage/#dom-top
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fn GetTop(&self) -> Option<Root<BrowsingContext>> {
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// TODO: implement window.top correctly for x-origin windows.
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Some(Root::from_ref(&*self.browsing_context))
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}
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// https://html.spec.whatwg.org/multipage/#dom-length
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fn Length(&self) -> u32 {
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// TODO: Implement x-origin length
|
||||
0
|
||||
}
|
||||
|
||||
// https://html.spec.whatwg.org/multipage/#dom-window-close
|
||||
fn Close(&self) {
|
||||
// TODO: Implement x-origin close
|
||||
}
|
||||
|
||||
// https://html.spec.whatwg.org/multipage/#dom-window-closed
|
||||
fn Closed(&self) -> bool {
|
||||
// TODO: Implement x-origin close
|
||||
false
|
||||
}
|
||||
|
||||
#[allow(unsafe_code)]
|
||||
// https://html.spec.whatwg.org/multipage/#dom-window-postmessage
|
||||
unsafe fn PostMessage(&self, _: *mut JSContext, _: HandleValue, _: DOMString) {
|
||||
// TODO: Implement x-origin postMessage
|
||||
}
|
||||
|
||||
#[allow(unsafe_code)]
|
||||
// https://html.spec.whatwg.org/multipage/#dom-opener
|
||||
unsafe fn Opener(&self, _: *mut JSContext) -> JSVal {
|
||||
// TODO: Implement x-origin opener
|
||||
UndefinedValue()
|
||||
}
|
||||
|
||||
#[allow(unsafe_code)]
|
||||
// https://html.spec.whatwg.org/multipage/#dom-opener
|
||||
unsafe fn SetOpener(&self, _: *mut JSContext, _: HandleValue) {
|
||||
// TODO: Implement x-origin opener
|
||||
}
|
||||
|
||||
// https://html.spec.whatwg.org/multipage/#dom-window-blur
|
||||
fn Blur(&self) {
|
||||
// TODO: Implement x-origin blur
|
||||
}
|
||||
|
||||
// https://html.spec.whatwg.org/multipage/#dom-focus
|
||||
fn Focus(&self) {
|
||||
// TODO: Implement x-origin focus
|
||||
}
|
||||
|
||||
// https://html.spec.whatwg.org/multipage/#dom-location
|
||||
fn Location(&self) -> Root<DissimilarOriginLocation> {
|
||||
self.location.or_init(|| DissimilarOriginLocation::new(self))
|
||||
}
|
||||
}
|
|
@ -258,6 +258,8 @@ pub mod csssupportsrule;
|
|||
pub mod cssviewportrule;
|
||||
pub mod customevent;
|
||||
pub mod dedicatedworkerglobalscope;
|
||||
pub mod dissimilaroriginlocation;
|
||||
pub mod dissimilaroriginwindow;
|
||||
pub mod document;
|
||||
pub mod documentfragment;
|
||||
pub mod documenttype;
|
||||
|
|
|
@ -0,0 +1,25 @@
|
|||
/* 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 http://mozilla.org/MPL/2.0/. */
|
||||
|
||||
|
||||
// This is a Servo-specific interface, used to represent locations
|
||||
// that are not similar-origin, so live in another script thread.
|
||||
// It is based on the interface for Window, but only contains the
|
||||
// accessors that do not throw security exceptions when called
|
||||
// cross-origin.
|
||||
//
|
||||
// Note that similar-origin locations are kept in the same script
|
||||
// thread, so this mechanism cannot be relied upon as the only
|
||||
// way to enforce security policy.
|
||||
|
||||
// https://html.spec.whatwg.org/multipage/#location
|
||||
[Unforgeable, NoInterfaceObject] interface DissimilarOriginLocation {
|
||||
[Throws] attribute USVString href;
|
||||
[Throws] void assign(USVString url);
|
||||
[Throws] void replace(USVString url);
|
||||
[Throws] void reload();
|
||||
[Throws] stringifier;
|
||||
|
||||
// TODO: finish this interface
|
||||
};
|
32
components/script/dom/webidls/DissimilarOriginWindow.webidl
Normal file
32
components/script/dom/webidls/DissimilarOriginWindow.webidl
Normal file
|
@ -0,0 +1,32 @@
|
|||
/* 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 http://mozilla.org/MPL/2.0/. */
|
||||
|
||||
// This is a Servo-specific interface, used to represent windows
|
||||
// that are not similar-origin, so live in another script thread.
|
||||
// It is based on the interface for Window, but only contains the
|
||||
// accessors that do not throw security exceptions when called
|
||||
// cross-origin.
|
||||
//
|
||||
// Note that similar-origin windows are kept in the same script
|
||||
// thread, so this mechanism cannot be relied upon as the only
|
||||
// way to enforce security policy.
|
||||
|
||||
// https://html.spec.whatwg.org/multipage/#window
|
||||
[Global, NoInterfaceObject]
|
||||
interface DissimilarOriginWindow : GlobalScope {
|
||||
[Unforgeable] readonly attribute WindowProxy window;
|
||||
[BinaryName="Self_", Replaceable] readonly attribute WindowProxy self;
|
||||
[Unforgeable] readonly attribute WindowProxy? parent;
|
||||
[Unforgeable] readonly attribute WindowProxy? top;
|
||||
[Replaceable] readonly attribute WindowProxy frames;
|
||||
[Replaceable] readonly attribute unsigned long length;
|
||||
[Unforgeable] readonly attribute DissimilarOriginLocation location;
|
||||
|
||||
void close();
|
||||
readonly attribute boolean closed;
|
||||
void postMessage(any message, DOMString targetOrigin);
|
||||
attribute any opener;
|
||||
void blur();
|
||||
void focus();
|
||||
};
|
|
@ -1514,7 +1514,10 @@ impl Window {
|
|||
// Suspend timer events.
|
||||
self.upcast::<GlobalScope>().suspend();
|
||||
|
||||
// TODO: set the window proxy to resolve to an object which throws security errors. #15233
|
||||
// Set the window proxy to be a cross-origin window.
|
||||
if self.browsing_context().currently_active() == Some(self.global().pipeline_id()) {
|
||||
self.browsing_context().unset_currently_active();
|
||||
}
|
||||
|
||||
// A hint to the JS runtime that now would be a good time to
|
||||
// GC any unreachable objects generated by user script,
|
||||
|
@ -1528,7 +1531,7 @@ impl Window {
|
|||
self.upcast::<GlobalScope>().resume();
|
||||
|
||||
// Set the window proxy to be this object.
|
||||
self.browsing_context().set_window_proxy(&self);
|
||||
self.browsing_context().set_currently_active(self);
|
||||
|
||||
// Push the document title to the compositor since we are
|
||||
// activating this document due to a navigation.
|
||||
|
|
Loading…
Add table
Add a link
Reference in a new issue