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LibWeb: Implement the CrossOriginGet AO

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This commit is contained in:
Linus Groh 2022-03-05 22:47:56 +01:00
parent c7b977547d
commit 245ec99813
Notes: sideshowbarker 2024-07-17 17:51:39 +09:00 
Author: https://github.com/linusg
Commit: https://github.com/SerenityOS/serenity/commit/245ec99813
Pull-request: https://github.com/SerenityOS/serenity/pull/12919
Reviewed-by: https://github.com/awesomekling ✅
2 changed files with 31 additions and 0 deletions
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29
Userland/Libraries/LibWeb/Bindings/CrossOriginAbstractOperations.cpp
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@ -166,4 +166,33 @@ Optional<JS::PropertyDescriptor> cross_origin_get_own_property_helper(Variant<Lo
return {};
}
// 7.2.3.5 CrossOriginGet ( O, P, Receiver ), https://html.spec.whatwg.org/multipage/browsers.html#crossoriginget-(-o,-p,-receiver-)
JS::ThrowCompletionOr<JS::Value> cross_origin_get(JS::GlobalObject& global_object, JS::Object const& object, JS::PropertyKey const& property_key, JS::Value receiver)
{
auto& vm = global_object.vm();
// 1. Let desc be ? O.[[GetOwnProperty]](P).
auto descriptor = TRY(object.internal_get_own_property(property_key));
// 2. Assert: desc is not undefined.
VERIFY(descriptor.has_value());
// 3. If IsDataDescriptor(desc) is true, then return desc.[[Value]].
if (descriptor->is_data_descriptor())
return descriptor->value;
// 4. Assert: IsAccessorDescriptor(desc) is true.
VERIFY(descriptor->is_accessor_descriptor());
// 5. Let getter be desc.[[Get]].
auto& getter = descriptor->get;
// 6. If getter is undefined, then throw a "SecurityError" DOMException.
if (!getter.has_value())
return vm.throw_completion<DOMExceptionWrapper>(global_object, DOM::SecurityError::create(String::formatted("Can't get property '{}' on cross-origin object", property_key)));
// 7. Return ? Call(getter, Receiver).
return JS::call(global_object, *getter, receiver);
}
}

2
Userland/Libraries/LibWeb/Bindings/CrossOriginAbstractOperations.h
View file

@ -31,6 +31,8 @@ Vector<CrossOriginProperty> cross_origin_properties(Variant<LocationObject const
JS::ThrowCompletionOr<JS::PropertyDescriptor> cross_origin_property_fallback(JS::GlobalObject&, JS::PropertyKey const&);
bool is_platform_object_same_origin(JS::Object const&);
Optional<JS::PropertyDescriptor> cross_origin_get_own_property_helper(Variant<LocationObject*, WindowObject*> const&, JS::PropertyKey const&);
JS::ThrowCompletionOr<JS::Value> cross_origin_get(JS::GlobalObject&, JS::Object const&, JS::PropertyKey const&, JS::Value receiver);
JS::ThrowCompletionOr<bool> cross_origin_set(JS::GlobalObject&, JS::Object&, JS::PropertyKey const&, JS::Value, JS::Value receiver);
}