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LibWeb: Limit HTMLTextAreaElement attributes to allowed values

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If `HTMLTextAreaElement.rows` or `HTMLTextAreaElement.cols`
is set to a value larger than 2147483647, then it should be set to its
default value.
This commit is contained in:
Tim Ledbetter 2024-11-26 21:14:32 +00:00 • committed by Andreas Kling
parent a8719a706b
commit 7fe3bf07e2
Notes: github-actions[bot] 2024-11-27 10:03:52 +00:00
3 changed files with 42 additions and 2 deletions
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10
Libraries/LibWeb/HTML/HTMLTextAreaElement.cpp
View file

@ -293,7 +293,7 @@ unsigned HTMLTextAreaElement::cols() const
{
// The cols and rows attributes are limited to only positive numbers with fallback. The cols IDL attribute's default value is 20.
if (auto cols_string = get_attribute(HTML::AttributeNames::cols); cols_string.has_value()) {
if (auto cols = parse_non_negative_integer(*cols_string); cols.has_value() && *cols > 0)
if (auto cols = parse_non_negative_integer(*cols_string); cols.has_value() && *cols > 0 && *cols <= 2147483647)
return *cols;
}
return 20;
@ -301,6 +301,9 @@ unsigned HTMLTextAreaElement::cols() const
WebIDL::ExceptionOr<void> HTMLTextAreaElement::set_cols(unsigned cols)
{
if (cols > 2147483647)
cols = 20;
return set_attribute(HTML::AttributeNames::cols, String::number(cols));
}
@ -309,7 +312,7 @@ unsigned HTMLTextAreaElement::rows() const
{
// The cols and rows attributes are limited to only positive numbers with fallback. The rows IDL attribute's default value is 2.
if (auto rows_string = get_attribute(HTML::AttributeNames::rows); rows_string.has_value()) {
if (auto rows = parse_non_negative_integer(*rows_string); rows.has_value() && *rows > 0)
if (auto rows = parse_non_negative_integer(*rows_string); rows.has_value() && *rows > 0 && *rows <= 2147483647)
return *rows;
}
return 2;
@ -317,6 +320,9 @@ unsigned HTMLTextAreaElement::rows() const
WebIDL::ExceptionOr<void> HTMLTextAreaElement::set_rows(unsigned rows)
{
if (rows > 2147483647)
rows = 2;
return set_attribute(HTML::AttributeNames::rows, String::number(rows));
}

32
Tests/LibWeb/Text/expected/HTML/unsigned-long-reflection.txt
View file

@ -46,3 +46,35 @@ marquee.getAttribute("scrolldelay") after marquee.setAttribute("scrollDelay", "4
marquee.scrollDelay after marquee.setAttribute("scrolldelay", "4294967295"): 85
marquee.getAttribute("scrolldelay") after marquee.scrollDelay = 4294967295: 85
marquee.scrollDelay after marquee.scrollDelay = 4294967295: 85
textarea.getAttribute("rows") after textarea.setAttribute("rows", "1"): 1
textarea.rows after textarea.setAttribute("rows", "1"): 1
textarea.getAttribute("rows") after textarea.rows = 1: 1
textarea.rows after textarea.rows = 1: 1
textarea.getAttribute("rows") after textarea.setAttribute("rows", "2147483647"): 2147483647
textarea.rows after textarea.setAttribute("rows", "2147483647"): 2147483647
textarea.getAttribute("rows") after textarea.rows = 2147483647: 2147483647
textarea.rows after textarea.rows = 2147483647: 2147483647
textarea.getAttribute("rows") after textarea.setAttribute("rows", "2147483648"): 2147483648
textarea.rows after textarea.setAttribute("rows", "2147483648"): 2
textarea.getAttribute("rows") after textarea.rows = 2147483648: 2
textarea.rows after textarea.rows = 2147483648: 2
textarea.getAttribute("rows") after textarea.setAttribute("rows", "4294967295"): 4294967295
textarea.rows after textarea.setAttribute("rows", "4294967295"): 2
textarea.getAttribute("rows") after textarea.rows = 4294967295: 2
textarea.rows after textarea.rows = 4294967295: 2
textarea.getAttribute("cols") after textarea.setAttribute("cols", "1"): 1
textarea.cols after textarea.setAttribute("cols", "1"): 1
textarea.getAttribute("cols") after textarea.cols = 1: 1
textarea.cols after textarea.cols = 1: 1
textarea.getAttribute("cols") after textarea.setAttribute("cols", "2147483647"): 2147483647
textarea.cols after textarea.setAttribute("cols", "2147483647"): 2147483647
textarea.getAttribute("cols") after textarea.cols = 2147483647: 2147483647
textarea.cols after textarea.cols = 2147483647: 2147483647
textarea.getAttribute("cols") after textarea.setAttribute("cols", "2147483648"): 2147483648
textarea.cols after textarea.setAttribute("cols", "2147483648"): 20
textarea.getAttribute("cols") after textarea.cols = 2147483648: 20
textarea.cols after textarea.cols = 2147483648: 20
textarea.getAttribute("cols") after textarea.setAttribute("cols", "4294967295"): 4294967295
textarea.cols after textarea.setAttribute("cols", "4294967295"): 20
textarea.getAttribute("cols") after textarea.cols = 4294967295: 20
textarea.cols after textarea.cols = 4294967295: 20

2
Tests/LibWeb/Text/input/HTML/unsigned-long-reflection.html
View file

@ -25,5 +25,7 @@
testProperty("img", "hspace", (img) => img.hspace, (img, value) => img.hspace = value);
testProperty("marquee", "scrollAmount", (marquee) => marquee.scrollAmount, (marquee, value) => marquee.scrollAmount = value);
testProperty("marquee", "scrollDelay", (marquee) => marquee.scrollDelay, (marquee, value) => marquee.scrollDelay = value);
testProperty("textarea", "rows", (textarea) => textarea.rows, (textarea, value) => textarea.rows = value);
testProperty("textarea", "cols", (textarea) => textarea.cols, (textarea, value) => textarea.cols = value);
});
</script>