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LibWeb: Limit HTMLInputElement.size to allowed values

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Attempting to set `HTMLInputElement.size` to 0 via IDL now throws an
IndexSizeError DOMException. Attempting to set it to a value larger
than 2147483647 results in it being set to the default value.
This commit is contained in:
Tim Ledbetter
2024-11-28 14:33:53 +00:00
committed by Andreas Kling
parent 08812a1f88
commit ae0c87c747
4 changed files with 26 additions and 5 deletions
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10
Libraries/LibWeb/HTML/HTMLInputElement.cpp
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@@ -1861,19 +1861,23 @@ WebIDL::ExceptionOr<void> HTMLInputElement::set_min_length(WebIDL::Long value)
}
// https://html.spec.whatwg.org/multipage/input.html#the-size-attribute
unsigned HTMLInputElement::size() const
WebIDL::UnsignedLong HTMLInputElement::size() const
{
// The size attribute, if specified, must have a value that is a valid non-negative integer greater than zero.
// The size IDL attribute is limited to only positive numbers and has a default value of 20.
if (auto size_string = get_attribute(HTML::AttributeNames::size); size_string.has_value()) {
if (auto size = parse_non_negative_integer(*size_string); size.has_value() && size.value() != 0)
if (auto size = parse_non_negative_integer(*size_string); size.has_value() && *size != 0 && *size <= 2147483647)
return *size;
}
return 20;
}
WebIDL::ExceptionOr<void> HTMLInputElement::set_size(unsigned value)
WebIDL::ExceptionOr<void> HTMLInputElement::set_size(WebIDL::UnsignedLong value)
{
if (value == 0)
return WebIDL::IndexSizeError::create(realm(), "Size must be greater than zero"_string);
if (value > 2147483647)
value = 20;
return set_attribute(HTML::AttributeNames::size, String::number(value));
}