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LibWeb/IDB: Implement check_that_a_key_could_be_injected_into_a_value

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stelar7 2025-04-11 10:54:23 +02:00
parent fa838b8dcb
commit 945a231947
2 changed files with 36 additions and 0 deletions
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35
Libraries/LibWeb/IndexedDB/Internal/Algorithms.cpp
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@ -990,4 +990,39 @@ WebIDL::ExceptionOr<ErrorOr<GC::Ref<Key>>> extract_a_key_from_a_value_using_a_ke
return multi_entry ? TRY(convert_a_value_to_a_multi_entry_key(realm, r)) : TRY(convert_a_value_to_a_key(realm, r));
}
// https://w3c.github.io/IndexedDB/#check-that-a-key-could-be-injected-into-a-value
bool check_that_a_key_could_be_injected_into_a_value(JS::Realm& realm, JS::Value value, KeyPath const& key_path)
{
// NOTE: The key paths used in this section are always strings and never sequences
// 1. Let identifiers be the result of strictly splitting keyPath on U+002E FULL STOP characters (.).
auto identifiers = MUST(key_path.get<String>().split('.'));
// 2. Assert: identifiers is not empty.
VERIFY(!identifiers.is_empty());
// 3. Remove the last item of identifiers.
identifiers.take_last();
// 4. For each remaining identifier of identifiers, if any:
for (auto const& identifier : identifiers) {
// 1. If value is not an Object or an Array, return false.
if (!(value.is_object() || MUST(value.is_array(realm.vm()))))
return false;
// 2. Let hop be ! HasOwnProperty(value, identifier).
auto hop = MUST(value.as_object().has_own_property(identifier));
// 3. If hop is false, return true.
if (!hop)
return true;
// 4. Let value be ! Get(value, identifier).
value = MUST(value.as_object().get(identifier));
}
// 5. Return true if value is an Object or an Array, or false otherwise.
return value.is_object() || MUST(value.is_array(realm.vm()));
}
}

1
Libraries/LibWeb/IndexedDB/Internal/Algorithms.h
View file

@ -32,5 +32,6 @@ WebIDL::ExceptionOr<JS::Value> clone_in_realm(JS::Realm&, JS::Value, GC::Ref<IDB
WebIDL::ExceptionOr<ErrorOr<GC::Ref<Key>>> convert_a_value_to_a_multi_entry_key(JS::Realm&, JS::Value);
WebIDL::ExceptionOr<ErrorOr<JS::Value>> evaluate_key_path_on_a_value(JS::Realm&, JS::Value, KeyPath const&);
WebIDL::ExceptionOr<ErrorOr<GC::Ref<Key>>> extract_a_key_from_a_value_using_a_key_path(JS::Realm&, JS::Value, KeyPath const&, bool = false);
bool check_that_a_key_could_be_injected_into_a_value(JS::Realm&, JS::Value, KeyPath const&);
}