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LibWeb: Refuse to fill float array with random values

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This passes an additional test in WPT:
WebCryptoAPI/getRandomValues.any
This commit is contained in:
Ben Wiederhake 2024-10-28 04:00:57 +01:00 • committed by Jelle Raaijmakers
commit 4a6ce210b0
Notes: github-actions[bot] 2024-10-28 09:43:17 +00:00
1 changed files with 4 additions and 0 deletions
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4
Userland/Libraries/LibWeb/Crypto/Crypto.cpp
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@ -51,6 +51,10 @@ WebIDL::ExceptionOr<JS::Handle<WebIDL::ArrayBufferView>> Crypto::get_random_valu
return WebIDL::TypeMismatchError::create(realm(), "array must be one of Int8Array, Uint8Array, Uint8ClampedArray, Int16Array, Uint16Array, Int32Array, Uint32Array, BigInt64Array, or BigUint64Array"_string);
auto const& typed_array = *array->bufferable_object().get<JS::NonnullGCPtr<JS::TypedArrayBase>>();
// Still need to exclude Float32Array, and potential future siblings like Float16Array:
if (!typed_array.element_name().is_one_of("Int8Array", "Uint8Array", "Uint8ClampedArray", "Int16Array", "Uint16Array", "Int32Array", "Uint32Array", "BigInt64Array", "BigUint64Array"))
return WebIDL::TypeMismatchError::create(realm(), "array must be one of Int8Array, Uint8Array, Uint8ClampedArray, Int16Array, Uint16Array, Int32Array, Uint32Array, BigInt64Array, or BigUint64Array"_string);
auto typed_array_record = JS::make_typed_array_with_buffer_witness_record(typed_array, JS::ArrayBuffer::Order::SeqCst);
// IMPLEMENTATION DEFINED: If the viewed array buffer is out-of-bounds, throw a InvalidStateError and terminate the algorithm.