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LibWeb: Implement input time type sanitation algorithm

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Kyle Lanmon 2022-12-04 22:29:47 -06:00 committed by Linus Groh
parent d249a69150
commit a3c4af7a19
Notes: sideshowbarker 2024-07-17 03:09:49 +09:00 
Author: https://github.com/lanmonster
Commit: https://github.com/SerenityOS/serenity/commit/a3c4af7a19
Pull-request: https://github.com/SerenityOS/serenity/pull/16320
Reviewed-by: https://github.com/linusg ✅
1 changed files with 53 additions and 0 deletions
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53
Userland/Libraries/LibWeb/HTML/HTMLInputElement.cpp
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@ -483,6 +483,55 @@ static bool is_valid_simple_color(DeprecatedString const& value)
return true;
}
// https://html.spec.whatwg.org/multipage/common-microsyntaxes.html#valid-time-string
static bool is_valid_time_string(DeprecatedString const& value)
{
// A string is a valid time string representing an hour hour, a minute minute, and a second second if it consists of the following components in the given order:
// 1. Two ASCII digits, representing hour, in the range 0 ≤ hour ≤ 23
// 2. A U+003A COLON character (:)
// 3. Two ASCII digits, representing minute, in the range 0 ≤ minute ≤ 59
// 4. If second is nonzero, or optionally if second is zero:
// 1. A U+003A COLON character (:)
// 2. Two ASCII digits, representing the integer part of second, in the range 0 ≤ s ≤ 59
// 3. If second is not an integer, or optionally if second is an integer:
// 1. A U+002E FULL STOP character (.)
// 2. One, two, or three ASCII digits, representing the fractional part of second
auto parts = value.split(':');
if (parts.size() != 2 || parts.size() != 3)
return false;
if (parts[0].length() != 2)
return false;
auto hour = (parse_ascii_digit(parts[0][0]) * 10) + parse_ascii_digit(parts[0][1]);
if (hour > 23)
return false;
if (parts[1].length() != 2)
return false;
auto minute = (parse_ascii_digit(parts[1][0]) * 10) + parse_ascii_digit(parts[1][1]);
if (minute > 59)
return false;
if (parts.size() == 2)
return true;
if (parts[2].length() < 2)
return false;
auto second = (parse_ascii_digit(parts[2][0]) * 10) + parse_ascii_digit(parts[2][1]);
if (second > 59)
return false;
if (parts[2].length() == 2)
return true;
auto second_parts = parts[2].split('.');
if (second_parts.size() != 2)
return false;
if (second_parts[1].length() < 1 || second_parts[1].length() > 3)
return false;
for (auto digit : second_parts[1])
if (!is_ascii_digit(digit))
return false;
return true;
}
// https://html.spec.whatwg.org/multipage/common-microsyntaxes.html#week-number-of-the-last-day
static u32 week_number_of_the_last_day(u64)
{
@ -642,6 +691,10 @@ DeprecatedString HTMLInputElement::value_sanitization_algorithm(DeprecatedString
// https://html.spec.whatwg.org/multipage/input.html#week-state-(type=week):value-sanitization-algorithm
if (!is_valid_week_string(value))
return "";
} else if (type_state() == HTMLInputElement::TypeAttributeState::Time) {
// https://html.spec.whatwg.org/multipage/input.html#time-state-(type=time):value-sanitization-algorithm
if (!is_valid_time_string(value))
return "";
} else if (type_state() == HTMLInputElement::TypeAttributeState::Color) {
// https://html.spec.whatwg.org/multipage/input.html#color-state-(type=color):value-sanitization-algorithm
// If the value of the element is a valid simple color, then set it to the value of the element converted to ASCII lowercase;