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<title>[52968] trunk: KSES: Allow `lang`, `xml:lang`, `dir` attributes globally.</title>
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<dt style="float: left; width: 6em; font-weight: bold">Revision</dt> <dd><a style="font-weight: bold" href="https://core.trac.wordpress.org/changeset/52968">52968</a><script type="application/ld+json">{"@context":"http://schema.org","@type":"EmailMessage","description":"Review this Commit","action":{"@type":"ViewAction","url":"https://core.trac.wordpress.org/changeset/52968","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>peterwilsoncc</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2022-03-21 00:11:08 +0000 (Mon, 21 Mar 2022)</dd>
</dl>
<pre style='padding-left: 1em; margin: 2em 0; border-left: 2px solid #ccc; line-height: 1.25; font-size: 105%; font-family: sans-serif'>KSES: Allow `lang`, `xml:lang`, `dir` attributes globally.
Globally permit the `lang`, `xml:lang`, and `dir` attributes on all elements rather than a subset in accordance with the HTML specification.
Props upsuper, SergeyBiryukov, mukesh27, audrasjb.
Fixes <a href="https://core.trac.wordpress.org/ticket/54699">#54699</a>.</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunksrcwpincludesksesphp">trunk/src/wp-includes/kses.php</a></li>
<li><a href="#trunktestsphpunittestsksesphp">trunk/tests/phpunit/tests/kses.php</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunksrcwpincludesksesphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/wp-includes/kses.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-includes/kses.php 2022-03-20 17:37:21 UTC (rev 52967)
+++ trunk/src/wp-includes/kses.php 2022-03-21 00:11:08 UTC (rev 52968)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -81,16 +81,10 @@
</span><span class="cx" style="display: block; padding: 0 10px"> 'target' => true,
</span><span class="cx" style="display: block; padding: 0 10px"> ),
</span><span class="cx" style="display: block; padding: 0 10px"> 'article' => array(
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- 'align' => true,
- 'dir' => true,
- 'lang' => true,
- 'xml:lang' => true,
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ 'align' => true,
</ins><span class="cx" style="display: block; padding: 0 10px"> ),
</span><span class="cx" style="display: block; padding: 0 10px"> 'aside' => array(
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- 'align' => true,
- 'dir' => true,
- 'lang' => true,
- 'xml:lang' => true,
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ 'align' => true,
</ins><span class="cx" style="display: block; padding: 0 10px"> ),
</span><span class="cx" style="display: block; padding: 0 10px"> 'audio' => array(
</span><span class="cx" style="display: block; padding: 0 10px"> 'autoplay' => true,
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -101,14 +95,10 @@
</span><span class="cx" style="display: block; padding: 0 10px"> 'src' => true,
</span><span class="cx" style="display: block; padding: 0 10px"> ),
</span><span class="cx" style="display: block; padding: 0 10px"> 'b' => array(),
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- 'bdo' => array(
- 'dir' => true,
- ),
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ 'bdo' => array(),
</ins><span class="cx" style="display: block; padding: 0 10px"> 'big' => array(),
</span><span class="cx" style="display: block; padding: 0 10px"> 'blockquote' => array(
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- 'cite' => true,
- 'lang' => true,
- 'xml:lang' => true,
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ 'cite' => true,
</ins><span class="cx" style="display: block; padding: 0 10px"> ),
</span><span class="cx" style="display: block; padding: 0 10px"> 'br' => array(),
</span><span class="cx" style="display: block; padding: 0 10px"> 'button' => array(
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -120,10 +110,7 @@
</span><span class="cx" style="display: block; padding: 0 10px"> 'caption' => array(
</span><span class="cx" style="display: block; padding: 0 10px"> 'align' => true,
</span><span class="cx" style="display: block; padding: 0 10px"> ),
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- 'cite' => array(
- 'dir' => true,
- 'lang' => true,
- ),
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ 'cite' => array(),
</ins><span class="cx" style="display: block; padding: 0 10px"> 'code' => array(),
</span><span class="cx" style="display: block; padding: 0 10px"> 'col' => array(
</span><span class="cx" style="display: block; padding: 0 10px"> 'align' => true,
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -130,7 +117,6 @@
</span><span class="cx" style="display: block; padding: 0 10px"> 'char' => true,
</span><span class="cx" style="display: block; padding: 0 10px"> 'charoff' => true,
</span><span class="cx" style="display: block; padding: 0 10px"> 'span' => true,
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- 'dir' => true,
</del><span class="cx" style="display: block; padding: 0 10px"> 'valign' => true,
</span><span class="cx" style="display: block; padding: 0 10px"> 'width' => true,
</span><span class="cx" style="display: block; padding: 0 10px"> ),
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -148,17 +134,11 @@
</span><span class="cx" style="display: block; padding: 0 10px"> 'dd' => array(),
</span><span class="cx" style="display: block; padding: 0 10px"> 'dfn' => array(),
</span><span class="cx" style="display: block; padding: 0 10px"> 'details' => array(
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- 'align' => true,
- 'dir' => true,
- 'lang' => true,
- 'open' => true,
- 'xml:lang' => true,
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ 'align' => true,
+ 'open' => true,
</ins><span class="cx" style="display: block; padding: 0 10px"> ),
</span><span class="cx" style="display: block; padding: 0 10px"> 'div' => array(
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- 'align' => true,
- 'dir' => true,
- 'lang' => true,
- 'xml:lang' => true,
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ 'align' => true,
</ins><span class="cx" style="display: block; padding: 0 10px"> ),
</span><span class="cx" style="display: block; padding: 0 10px"> 'dl' => array(),
</span><span class="cx" style="display: block; padding: 0 10px"> 'dt' => array(),
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -165,16 +145,10 @@
</span><span class="cx" style="display: block; padding: 0 10px"> 'em' => array(),
</span><span class="cx" style="display: block; padding: 0 10px"> 'fieldset' => array(),
</span><span class="cx" style="display: block; padding: 0 10px"> 'figure' => array(
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- 'align' => true,
- 'dir' => true,
- 'lang' => true,
- 'xml:lang' => true,
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ 'align' => true,
</ins><span class="cx" style="display: block; padding: 0 10px"> ),
</span><span class="cx" style="display: block; padding: 0 10px"> 'figcaption' => array(
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- 'align' => true,
- 'dir' => true,
- 'lang' => true,
- 'xml:lang' => true,
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ 'align' => true,
</ins><span class="cx" style="display: block; padding: 0 10px"> ),
</span><span class="cx" style="display: block; padding: 0 10px"> 'font' => array(
</span><span class="cx" style="display: block; padding: 0 10px"> 'color' => true,
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -182,10 +156,7 @@
</span><span class="cx" style="display: block; padding: 0 10px"> 'size' => true,
</span><span class="cx" style="display: block; padding: 0 10px"> ),
</span><span class="cx" style="display: block; padding: 0 10px"> 'footer' => array(
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- 'align' => true,
- 'dir' => true,
- 'lang' => true,
- 'xml:lang' => true,
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ 'align' => true,
</ins><span class="cx" style="display: block; padding: 0 10px"> ),
</span><span class="cx" style="display: block; padding: 0 10px"> 'h1' => array(
</span><span class="cx" style="display: block; padding: 0 10px"> 'align' => true,
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -206,16 +177,10 @@
</span><span class="cx" style="display: block; padding: 0 10px"> 'align' => true,
</span><span class="cx" style="display: block; padding: 0 10px"> ),
</span><span class="cx" style="display: block; padding: 0 10px"> 'header' => array(
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- 'align' => true,
- 'dir' => true,
- 'lang' => true,
- 'xml:lang' => true,
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ 'align' => true,
</ins><span class="cx" style="display: block; padding: 0 10px"> ),
</span><span class="cx" style="display: block; padding: 0 10px"> 'hgroup' => array(
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- 'align' => true,
- 'dir' => true,
- 'lang' => true,
- 'xml:lang' => true,
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ 'align' => true,
</ins><span class="cx" style="display: block; padding: 0 10px"> ),
</span><span class="cx" style="display: block; padding: 0 10px"> 'hr' => array(
</span><span class="cx" style="display: block; padding: 0 10px"> 'align' => true,
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -253,10 +218,7 @@
</span><span class="cx" style="display: block; padding: 0 10px"> 'value' => true,
</span><span class="cx" style="display: block; padding: 0 10px"> ),
</span><span class="cx" style="display: block; padding: 0 10px"> 'main' => array(
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- 'align' => true,
- 'dir' => true,
- 'lang' => true,
- 'xml:lang' => true,
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ 'align' => true,
</ins><span class="cx" style="display: block; padding: 0 10px"> ),
</span><span class="cx" style="display: block; padding: 0 10px"> 'map' => array(
</span><span class="cx" style="display: block; padding: 0 10px"> 'name' => true,
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -266,10 +228,7 @@
</span><span class="cx" style="display: block; padding: 0 10px"> 'type' => true,
</span><span class="cx" style="display: block; padding: 0 10px"> ),
</span><span class="cx" style="display: block; padding: 0 10px"> 'nav' => array(
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- 'align' => true,
- 'dir' => true,
- 'lang' => true,
- 'xml:lang' => true,
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ 'align' => true,
</ins><span class="cx" style="display: block; padding: 0 10px"> ),
</span><span class="cx" style="display: block; padding: 0 10px"> 'object' => array(
</span><span class="cx" style="display: block; padding: 0 10px"> 'data' => array(
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -282,10 +241,7 @@
</span><span class="cx" style="display: block; padding: 0 10px"> ),
</span><span class="cx" style="display: block; padding: 0 10px"> ),
</span><span class="cx" style="display: block; padding: 0 10px"> 'p' => array(
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- 'align' => true,
- 'dir' => true,
- 'lang' => true,
- 'xml:lang' => true,
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ 'align' => true,
</ins><span class="cx" style="display: block; padding: 0 10px"> ),
</span><span class="cx" style="display: block; padding: 0 10px"> 'pre' => array(
</span><span class="cx" style="display: block; padding: 0 10px"> 'width' => true,
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -296,16 +252,10 @@
</span><span class="cx" style="display: block; padding: 0 10px"> 's' => array(),
</span><span class="cx" style="display: block; padding: 0 10px"> 'samp' => array(),
</span><span class="cx" style="display: block; padding: 0 10px"> 'span' => array(
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- 'dir' => true,
- 'align' => true,
- 'lang' => true,
- 'xml:lang' => true,
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ 'align' => true,
</ins><span class="cx" style="display: block; padding: 0 10px"> ),
</span><span class="cx" style="display: block; padding: 0 10px"> 'section' => array(
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- 'align' => true,
- 'dir' => true,
- 'lang' => true,
- 'xml:lang' => true,
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ 'align' => true,
</ins><span class="cx" style="display: block; padding: 0 10px"> ),
</span><span class="cx" style="display: block; padding: 0 10px"> 'small' => array(),
</span><span class="cx" style="display: block; padding: 0 10px"> 'strike' => array(),
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -312,10 +262,7 @@
</span><span class="cx" style="display: block; padding: 0 10px"> 'strong' => array(),
</span><span class="cx" style="display: block; padding: 0 10px"> 'sub' => array(),
</span><span class="cx" style="display: block; padding: 0 10px"> 'summary' => array(
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- 'align' => true,
- 'dir' => true,
- 'lang' => true,
- 'xml:lang' => true,
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ 'align' => true,
</ins><span class="cx" style="display: block; padding: 0 10px"> ),
</span><span class="cx" style="display: block; padding: 0 10px"> 'sup' => array(),
</span><span class="cx" style="display: block; padding: 0 10px"> 'table' => array(
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -324,7 +271,6 @@
</span><span class="cx" style="display: block; padding: 0 10px"> 'border' => true,
</span><span class="cx" style="display: block; padding: 0 10px"> 'cellpadding' => true,
</span><span class="cx" style="display: block; padding: 0 10px"> 'cellspacing' => true,
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- 'dir' => true,
</del><span class="cx" style="display: block; padding: 0 10px"> 'rules' => true,
</span><span class="cx" style="display: block; padding: 0 10px"> 'summary' => true,
</span><span class="cx" style="display: block; padding: 0 10px"> 'width' => true,
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -343,7 +289,6 @@
</span><span class="cx" style="display: block; padding: 0 10px"> 'char' => true,
</span><span class="cx" style="display: block; padding: 0 10px"> 'charoff' => true,
</span><span class="cx" style="display: block; padding: 0 10px"> 'colspan' => true,
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- 'dir' => true,
</del><span class="cx" style="display: block; padding: 0 10px"> 'headers' => true,
</span><span class="cx" style="display: block; padding: 0 10px"> 'height' => true,
</span><span class="cx" style="display: block; padding: 0 10px"> 'nowrap' => true,
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -1237,7 +1182,7 @@
</span><span class="cx" style="display: block; padding: 0 10px"> * Determines whether an attribute is allowed.
</span><span class="cx" style="display: block; padding: 0 10px"> *
</span><span class="cx" style="display: block; padding: 0 10px"> * @since 4.2.3
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- * @since 5.0.0 Add support for `data-*` wildcard attributes.
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ * @since 5.0.0 Added support for `data-*` wildcard attributes.
</ins><span class="cx" style="display: block; padding: 0 10px"> *
</span><span class="cx" style="display: block; padding: 0 10px"> * @param string $name The attribute name. Passed by reference. Returns empty string when not allowed.
</span><span class="cx" style="display: block; padding: 0 10px"> * @param string $value The attribute value. Passed by reference. Returns a filtered value.
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -1271,7 +1216,9 @@
</span><span class="cx" style="display: block; padding: 0 10px"> * Note: the attribute name should only contain `A-Za-z0-9_-` chars,
</span><span class="cx" style="display: block; padding: 0 10px"> * double hyphens `--` are not accepted by WordPress.
</span><span class="cx" style="display: block; padding: 0 10px"> */
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- if ( strpos( $name_low, 'data-' ) === 0 && ! empty( $allowed_attr['data-*'] ) && preg_match( '/^data(?:-[a-z0-9_]+)+$/', $name_low, $match ) ) {
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ if ( strpos( $name_low, 'data-' ) === 0 && ! empty( $allowed_attr['data-*'] )
+ && preg_match( '/^data(?:-[a-z0-9_]+)+$/', $name_low, $match )
+ ) {
</ins><span class="cx" style="display: block; padding: 0 10px"> /*
</span><span class="cx" style="display: block; padding: 0 10px"> * Add the whole attribute name to the allowed attributes and set any restrictions
</span><span class="cx" style="display: block; padding: 0 10px"> * for the `data-*` attribute values for the current element.
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -2552,7 +2499,9 @@
</span><span class="cx" style="display: block; padding: 0 10px"> * Helper function to add global attributes to a tag in the allowed HTML list.
</span><span class="cx" style="display: block; padding: 0 10px"> *
</span><span class="cx" style="display: block; padding: 0 10px"> * @since 3.5.0
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- * @since 5.0.0 Add support for `data-*` wildcard attributes.
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ * @since 5.0.0 Added support for `data-*` wildcard attributes.
+ * @since 6.0.0 Added `dir`, `lang`, and `xml:lang` to global attributes.
+ *
</ins><span class="cx" style="display: block; padding: 0 10px"> * @access private
</span><span class="cx" style="display: block; padding: 0 10px"> * @ignore
</span><span class="cx" style="display: block; padding: 0 10px"> *
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -2567,11 +2516,14 @@
</span><span class="cx" style="display: block; padding: 0 10px"> 'aria-labelledby' => true,
</span><span class="cx" style="display: block; padding: 0 10px"> 'aria-hidden' => true,
</span><span class="cx" style="display: block; padding: 0 10px"> 'class' => true,
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ 'data-*' => true,
+ 'dir' => true,
</ins><span class="cx" style="display: block; padding: 0 10px"> 'id' => true,
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ 'lang' => true,
</ins><span class="cx" style="display: block; padding: 0 10px"> 'style' => true,
</span><span class="cx" style="display: block; padding: 0 10px"> 'title' => true,
</span><span class="cx" style="display: block; padding: 0 10px"> 'role' => true,
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- 'data-*' => true,
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ 'xml:lang' => true,
</ins><span class="cx" style="display: block; padding: 0 10px"> );
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> if ( true === $value ) {
</span></span></pre></div>
<a id="trunktestsphpunittestsksesphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/tests/phpunit/tests/kses.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/tests/phpunit/tests/kses.php 2022-03-20 17:37:21 UTC (rev 52967)
+++ trunk/tests/phpunit/tests/kses.php 2022-03-21 00:11:08 UTC (rev 52968)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -494,9 +494,12 @@
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> foreach ( $tags as $tag ) {
</span><span class="cx" style="display: block; padding: 0 10px"> $this->assertTrue( $tag['class'] );
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ $this->assertTrue( $tag['dir'] );
</ins><span class="cx" style="display: block; padding: 0 10px"> $this->assertTrue( $tag['id'] );
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ $this->assertTrue( $tag['lang'] );
</ins><span class="cx" style="display: block; padding: 0 10px"> $this->assertTrue( $tag['style'] );
</span><span class="cx" style="display: block; padding: 0 10px"> $this->assertTrue( $tag['title'] );
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ $this->assertTrue( $tag['xml:lang'] );
</ins><span class="cx" style="display: block; padding: 0 10px"> }
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> $this->assertSame( $allowedtags, wp_kses_allowed_html( 'data' ) );
</span></span></pre>
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