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LibWeb: Extract deserialization logic for {,object} primitives
To avoid differing logic for deserializing similar types, move the logic into separate helpers. Also, adds security checks like VERIFY to avoid reading past the end of the serialized data. If we try to read past the end of the serialized data, either our program logic is wrong or our serialized data has somehow been corrupted. Therefore, at least currently, it is better to crash by VERIFYing.
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2 changed files with 76 additions and 30 deletions
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@ -70,6 +70,15 @@ WebIDL::ExceptionOr<void> serialize_array_buffer(JS::VM& vm, Vector<u32>& vector
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template<OneOf<JS::TypedArrayBase, JS::DataView> ViewType>
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WebIDL::ExceptionOr<void> serialize_viewed_array_buffer(JS::VM& vm, Vector<u32>& vector, ViewType const& view, bool for_storage, SerializationMemory& memory);
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bool deserialize_boolean_primitive(ReadonlySpan<u32> const& serialized, size_t& position);
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double deserialize_number_primitive(ReadonlySpan<u32> const& serialized, size_t& position);
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JS::NonnullGCPtr<JS::BooleanObject> deserialize_boolean_object(JS::Realm& realm, ReadonlySpan<u32> const& serialized, size_t& position);
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JS::NonnullGCPtr<JS::NumberObject> deserialize_number_object(JS::Realm& realm, ReadonlySpan<u32> const& serialized, size_t& position);
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WebIDL::ExceptionOr<JS::NonnullGCPtr<JS::BigIntObject>> deserialize_big_int_object(JS::Realm& realm, ReadonlySpan<u32> const& serialized, size_t& position);
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WebIDL::ExceptionOr<JS::NonnullGCPtr<JS::StringObject>> deserialize_string_object(JS::Realm& realm, ReadonlySpan<u32> const& serialized, size_t& position);
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JS::NonnullGCPtr<JS::Date> deserialize_date_object(JS::Realm& realm, ReadonlySpan<u32> const& serialized, size_t& position);
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WebIDL::ExceptionOr<JS::NonnullGCPtr<JS::RegExpObject>> deserialize_reg_exp_object(JS::Realm& realm, ReadonlySpan<u32> const& serialized, size_t& position);
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WebIDL::ExceptionOr<ByteBuffer> deserialize_bytes(JS::VM& vm, ReadonlySpan<u32> vector, size_t& position);
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WebIDL::ExceptionOr<String> deserialize_string(JS::VM& vm, ReadonlySpan<u32> vector, size_t& position);
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WebIDL::ExceptionOr<JS::NonnullGCPtr<JS::PrimitiveString>> deserialize_string_primitive(JS::VM& vm, ReadonlySpan<u32> vector, size_t& position);
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