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Docs: Add a @since note and description to wp_kses_attr() for new attribute-related KSES options:

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* Support for an array of allowed values for attributes.
* Support for required attributes.

Follow-up to [51963].

See #54261.
Built from https://develop.svn.wordpress.org/trunk@52234


git-svn-id: http://core.svn.wordpress.org/trunk@51826 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
Sergey Biryukov 2021-11-23 18:39:00 +00:00
parent f02e2e6265
commit 86cd872c29
2 changed files with 17 additions and 6 deletions
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21
wp-includes/kses.php
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@ -1142,7 +1142,17 @@ function wp_kses_split2( $string, $allowed_html, $allowed_protocols ) {
* is to check if the tag has a closing XHTML slash, and if it does, it puts one * is to check if the tag has a closing XHTML slash, and if it does, it puts one
* in the returned code as well. * in the returned code as well.
* *
* An array of allowed values can be defined for attributes. If the attribute value
* doesn't fall into the list, the attribute will be removed from the tag.
*
* Attributes can be marked as required. If a required attribute is not present,
* KSES will remove all attributes from the tag. As KSES doesn't match opening and
* closing tags, it's not possible to safely remove the tag itself, the safest
* fallback is to strip all attributes from the tag, instead.
*
* @since 1.0.0 * @since 1.0.0
* @since 5.9.0 Added support for an array of allowed values for attributes.
* Added support for required attributes.
* *
* @param string $element HTML element/tag. * @param string $element HTML element/tag.
* @param string $attr HTML attributes from HTML element to closing HTML element tag. * @param string $attr HTML attributes from HTML element to closing HTML element tag.
@ -1180,16 +1190,17 @@ function wp_kses_attr( $element, $attr, $allowed_html, $allowed_protocols ) {
} }
); );
// If a required attribute check fails, we can return nothing for a self-closing tag, /*
// but for a non-self-closing tag the best option is to return the element with attributes, * If a required attribute check fails, we can return nothing for a self-closing tag,
// as KSES doesn't handle matching the relevant closing tag. * but for a non-self-closing tag the best option is to return the element with attributes,
* as KSES doesn't handle matching the relevant closing tag.
*/
$stripped_tag = ''; $stripped_tag = '';
if ( empty( $xhtml_slash ) ) { if ( empty( $xhtml_slash ) ) {
$stripped_tag = "<$element>"; $stripped_tag = "<$element>";
} }
// Go through $attrarr, and save the allowed attributes for this element // Go through $attrarr, and save the allowed attributes for this element in $attr2.
// in $attr2.
$attr2 = ''; $attr2 = '';
foreach ( $attrarr as $arreach ) { foreach ( $attrarr as $arreach ) {
// Check if this attribute is required. // Check if this attribute is required.

2
wp-includes/version.php
View File

@ -16,7 +16,7 @@
* *
* @global string $wp_version * @global string $wp_version
*/ */
$wp_version = '5.9-alpha-52233'; $wp_version = '5.9-alpha-52234';
/** /**
* Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema. * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.