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Make methods storing layout-originating nodes unsafe.

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This commit is contained in:
Josh Matthews 2017-05-10 18:20:31 -04:00
parent 2ca80a800f
commit b0bf2b4bad
4 changed files with 39 additions and 22 deletions
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26
components/script/dom/document.rs
View file

@ -826,6 +826,7 @@ impl Document {
}
}
#[allow(unsafe_code)]
pub fn handle_mouse_event(&self,
js_runtime: *mut JSRuntime,
button: MouseButton,
@ -841,7 +842,9 @@ impl Document {
let node = match self.window.hit_test_query(client_point, false) {
Some(node_address) => {
debug!("node address is {:?}", node_address);
node::from_untrusted_node_address(js_runtime, node_address)
unsafe {
node::from_untrusted_node_address(js_runtime, node_address)
}
},
None => return,
};
@ -988,13 +991,16 @@ impl Document {
*self.last_click_info.borrow_mut() = Some((now, click_pos));
}
#[allow(unsafe_code)]
pub fn handle_touchpad_pressure_event(&self,
js_runtime: *mut JSRuntime,
client_point: Point2D<f32>,
pressure: f32,
phase_now: TouchpadPressurePhase) {
let node = match self.window.hit_test_query(client_point, false) {
Some(node_address) => node::from_untrusted_node_address(js_runtime, node_address),
Some(node_address) => unsafe {
node::from_untrusted_node_address(js_runtime, node_address)
},
None => return
};
@ -1089,6 +1095,7 @@ impl Document {
event.fire(target);
}
#[allow(unsafe_code)]
pub fn handle_mouse_move_event(&self,
js_runtime: *mut JSRuntime,
client_point: Option<Point2D<f32>>,
@ -1104,7 +1111,7 @@ impl Document {
};
let maybe_new_target = self.window.hit_test_query(client_point, true).and_then(|address| {
let node = node::from_untrusted_node_address(js_runtime, address);
let node = unsafe { node::from_untrusted_node_address(js_runtime, address) };
node.inclusive_ancestors()
.filter_map(Root::downcast::<Element>)
.next()
@ -1186,6 +1193,7 @@ impl Document {
ReflowReason::MouseEvent);
}
#[allow(unsafe_code)]
pub fn handle_touch_event(&self,
js_runtime: *mut JSRuntime,
event_type: TouchEventType,
@ -1202,7 +1210,9 @@ impl Document {
};
let node = match self.window.hit_test_query(point, false) {
Some(node_address) => node::from_untrusted_node_address(js_runtime, node_address),
Some(node_address) => unsafe {
node::from_untrusted_node_address(js_runtime, node_address)
},
None => return TouchEventResult::Processed(false),
};
let el = match node.downcast::<Element>() {
@ -3480,7 +3490,9 @@ impl DocumentMethods for Document {
Some(untrusted_node_address) => {
let js_runtime = unsafe { JS_GetRuntime(window.get_cx()) };
let node = node::from_untrusted_node_address(js_runtime, untrusted_node_address);
let node = unsafe {
node::from_untrusted_node_address(js_runtime, untrusted_node_address)
};
let parent_node = node.GetParentNode().unwrap();
let element_ref = node.downcast::<Element>().unwrap_or_else(|| {
parent_node.downcast::<Element>().unwrap()
@ -3515,7 +3527,9 @@ impl DocumentMethods for Document {
// Step 1 and Step 3
let mut elements: Vec<Root<Element>> = self.nodes_from_point(point).iter()
.flat_map(|&untrusted_node_address| {
let node = node::from_untrusted_node_address(js_runtime, untrusted_node_address);
let node = unsafe {
node::from_untrusted_node_address(js_runtime, untrusted_node_address)
};
Root::downcast::<Element>(node)
}).collect();

18
components/script/dom/node.rs
View file

@ -927,20 +927,18 @@ fn first_node_not_in<I>(mut nodes: I, not_in: &[NodeOrString]) -> Option<Root<No
/// If the given untrusted node address represents a valid DOM node in the given runtime,
/// returns it.
#[allow(unsafe_code)]
pub fn from_untrusted_node_address(_runtime: *mut JSRuntime, candidate: UntrustedNodeAddress)
pub unsafe fn from_untrusted_node_address(_runtime: *mut JSRuntime, candidate: UntrustedNodeAddress)
-> Root<Node> {
unsafe {
// https://github.com/servo/servo/issues/6383
let candidate: uintptr_t = mem::transmute(candidate.0);
// https://github.com/servo/servo/issues/6383
let candidate: uintptr_t = mem::transmute(candidate.0);
// let object: *mut JSObject = jsfriendapi::bindgen::JS_GetAddressableObject(runtime,
// candidate);
let object: *mut JSObject = mem::transmute(candidate);
if object.is_null() {
panic!("Attempted to create a `JS<Node>` from an invalid pointer!")
}
let boxed_node = conversions::private_from_object(object) as *const Node;
Root::from_ref(&*boxed_node)
let object: *mut JSObject = mem::transmute(candidate);
if object.is_null() {
panic!("Attempted to create a `JS<Node>` from an invalid pointer!")
}
let boxed_node = conversions::private_from_object(object) as *const Node;
Root::from_ref(&*boxed_node)
}
#[allow(unsafe_code)]

9
components/script/dom/window.rs
View file

@ -1241,7 +1241,7 @@ impl Window {
let id = image.id;
let js_runtime = self.js_runtime.borrow();
let js_runtime = js_runtime.as_ref().unwrap();
let node = from_untrusted_node_address(js_runtime.rt(), image.node);
let node = unsafe { from_untrusted_node_address(js_runtime.rt(), image.node) };
if let PendingImageState::Unrequested(ref url) = image.state {
fetch_image_for_layout(url.clone(), &*node, id, self.image_cache.clone());
@ -1261,7 +1261,9 @@ impl Window {
}
}
ScriptThread::note_newly_transitioning_nodes(complete.newly_transitioning_nodes);
unsafe {
ScriptThread::note_newly_transitioning_nodes(complete.newly_transitioning_nodes);
}
true
}
@ -1457,6 +1459,7 @@ impl Window {
DOMString::from(resolved)
}
#[allow(unsafe_code)]
pub fn offset_parent_query(&self, node: TrustedNodeAddress) -> (Option<Root<Element>>, Rect<Au>) {
if !self.reflow(ReflowGoal::ForScriptQuery,
ReflowQueryType::OffsetParentQuery(node),
@ -1468,7 +1471,7 @@ impl Window {
let js_runtime = self.js_runtime.borrow();
let js_runtime = js_runtime.as_ref().unwrap();
let element = response.node_address.and_then(|parent_node_address| {
let node = from_untrusted_node_address(js_runtime.rt(), parent_node_address);
let node = unsafe { from_untrusted_node_address(js_runtime.rt(), parent_node_address) };
Root::downcast(node)
});
(element, response.rect)