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script: Make set_dictionary_property a safe function (#39191)

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Makes `set_dictionary_property` safe.

Testing: Changes are internal, this shouldn't affect behavior.
Fixes: #39128

Signed-off-by: lumiscosity <averyrudelphe@gmail.com>
This commit is contained in:
lumiscosity 2025-09-07 13:56:20 +02:00 • committed by GitHub
parent af8723c0b1
commit 088d16d634
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GPG key ID: B5690EEEBB952194
4 changed files with 13 additions and 20 deletions
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12
components/script/dom/messageport.rs
View file

@ -222,16 +222,12 @@ impl MessagePort {
type_.safe_to_jsval(cx, type_string.handle_mut());
// Perform ! CreateDataProperty(message, "type", type).
unsafe {
set_dictionary_property(*cx, message.handle(), "type", type_string.handle())
.expect("Setting the message type should not fail.");
}
set_dictionary_property(cx, message.handle(), "type", type_string.handle())
.expect("Setting the message type should not fail.");
// Perform ! CreateDataProperty(message, "value", value).
unsafe {
set_dictionary_property(*cx, message.handle(), "value", value)
.expect("Setting the message value should not fail.");
}
set_dictionary_property(cx, message.handle(), "value", value)
.expect("Setting the message value should not fail.");
// Let targetPort be the port with which port is entangled, if any; otherwise let it be null.
// Done in `global.post_messageport_msg`.

6
components/script/indexed_db.rs
View file

@ -236,10 +236,8 @@ pub(crate) fn evaluate_key_path_on_value(
// Step 1.3.4. Let p be ! ToString(i).
// Step 1.3.5. Let status be CreateDataProperty(result, p, key).
// Step 1.3.6. Assert: status is true.
unsafe {
set_dictionary_property(*cx, result.handle(), &i.to_string(), key.handle())
.map_err(|_| Error::JSFailed)?;
}
set_dictionary_property(cx, result.handle(), &i.to_string(), key.handle())
.map_err(|_| Error::JSFailed)?;
// Step 1.3.7. Increase i by 1.
// Done by for loop with enumerate()

2
components/script_bindings/codegen/codegen.py
View file

@ -7545,7 +7545,7 @@ impl{self.generic} Clone for {self.makeClassName(self.dictionary)}{self.genericS
insertion = (
f"rooted!(in(cx) let mut {varName}_js = UndefinedValue());\n"
f"{varName}.to_jsval(cx, {varName}_js.handle_mut());\n"
f'set_dictionary_property(cx, obj.handle(), "{dictionaryName}", {varName}_js.handle()).unwrap();')
f'set_dictionary_property(SafeJSContext::from_ptr(cx), obj.handle(), "{dictionaryName}", {varName}_js.handle()).unwrap();')
return CGGeneric(insertion)
def memberInsert(memberInfo: tuple[IDLArgument, JSToNativeConversionInfo]) -> CGThing:

13
components/script_bindings/utils.rs
View file

@ -290,12 +290,9 @@ pub unsafe fn get_dictionary_property(
/// Set the property with name `property` from `object`.
/// Returns `Err(())` on JSAPI failure, or null object,
/// and Ok(()) otherwise
///
/// # Safety
/// `cx` must point to a valid, non-null JSContext.
#[allow(clippy::result_unit_err)]
pub unsafe fn set_dictionary_property(
cx: *mut JSContext,
pub fn set_dictionary_property(
cx: SafeJSContext,
object: HandleObject,
property: &str,
value: HandleValue,
@ -305,8 +302,10 @@ pub unsafe fn set_dictionary_property(
}
let property = CString::new(property).unwrap();
if !JS_SetProperty(cx, object, property.as_ptr(), value) {
return Err(());
unsafe {
if !JS_SetProperty(*cx, object, property.as_ptr(), value) {
return Err(());
}
}
Ok(())