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<title>[56848] branches/6.3/src/wp-includes/default-filters.php: Editor: Harden the display of footnotes.</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/56848">56848</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/56848","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>audrasjb</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2023-10-12 13:51:19 +0000 (Thu, 12 Oct 2023)</dd>
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<pre style='padding-left: 1em; margin: 2em 0; border-left: 2px solid #ccc; line-height: 1.25; font-size: 105%; font-family: sans-serif'>Editor: Harden the display of footnotes.
Props jorgefilipecosta, peterwilsoncc, costdev, xknown, jorbin, desrosj.
Merges <a href="https://core.trac.wordpress.org/changeset/56839">[56839]</a> and <a href="https://core.trac.wordpress.org/changeset/56845">[56845]</a> to branch 6.3.</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#branches63srcwpincludesblocksphp">branches/6.3/src/wp-includes/blocks.php</a></li>
<li><a href="#branches63srcwpincludesdefaultfiltersphp">branches/6.3/src/wp-includes/default-filters.php</a></li>
</ul>
<h3>Property Changed</h3>
<ul>
<li><a href="#branches63">branches/6.3/</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<span class="cx" style="display: block; padding: 0 10px">Index: branches/6.3
</span><span class="cx" style="display: block; padding: 0 10px">===================================================================
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">--- branches/6.3 2023-10-12 13:33:20 UTC (rev 56847)
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+++ branches/6.3 2023-10-12 13:51:19 UTC (rev 56848)
</ins><a id="branches63"></a>
<div class="propset"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Property changes: branches/6.3</h4>
<pre class="diff"><span>
</span></pre></div>
<a id="svnmergeinfo"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: svn:mergeinfo</h4></div>
<span class="cx" style="display: block; padding: 0 10px"> /branches/5.0:43681-43682,43684-43688,43719-43720,43723,43726-43727,43729-43731,43734-43744,43747,43751-43754,43758,43760-43765,43767-43770,43772,43774-43781,43783,43785,43790-43806,43808-43821,43825,43828,43830-43834,43836-43843,43846-43863,43867-43889,43891-43894,43897-43905,43908-43909,43911-43929,43931-43942,43946-43947,43949-43956,43959-43964,43967-43969,43988,43994,44014,44017,44047,44183,44185,44187-44206,44208-44213,44231-44232,44235,44248,44284,44287-44288
</span><span class="cx" style="display: block; padding: 0 10px"> /branches/5.5:49373-49379,49381
</span><span class="cx" style="display: block; padding: 0 10px"> /branches/5.8:51889
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-/trunk:56268,56272,56277,56279,56282,56284,56287,56290-56292,56296,56298,56300,56302,56308-56309,56311,56315,56320,56327,56329,56332,56335,56337,56339,56341,56350,56358,56365,56381,56386,56401,56417,56422,56459,56461,56463,56490-56491,56502-56503,56524-56525,56527,56529,56550,56577,56622,56757,56778,56783,56785,56833-56838
</del><span class="cx" style="display: block; padding: 0 10px">\ No newline at end of property
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+/trunk:56268,56272,56277,56279,56282,56284,56287,56290-56292,56296,56298,56300,56302,56308-56309,56311,56315,56320,56327,56329,56332,56335,56337,56339,56341,56350,56358,56365,56381,56386,56401,56417,56422,56459,56461,56463,56490-56491,56502-56503,56524-56525,56527,56529,56550,56577,56622,56757,56778,56783,56785,56833-56839,56845
</ins><span class="cx" style="display: block; padding: 0 10px">\ No newline at end of property
</span><a id="branches63srcwpincludesblocksphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/6.3/src/wp-includes/blocks.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/6.3/src/wp-includes/blocks.php 2023-10-12 13:33:20 UTC (rev 56847)
+++ branches/6.3/src/wp-includes/blocks.php 2023-10-12 13:51:19 UTC (rev 56848)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -1602,3 +1602,85 @@
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span><span class="cx" style="display: block; padding: 0 10px"> return null;
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
+/**
+ * Strips all HTML from the content of footnotes, and sanitizes the ID.
+ * This function expects slashed data on the footnotes content.
+ *
+ * @access private
+ * @since 6.3.2
+ *
+ * @param string $footnotes JSON encoded string of an array containing the content and ID of each footnote.
+ * @return string Filtered content without any HTML on the footnote content and with the sanitized id.
+ */
+function _wp_filter_post_meta_footnotes( $footnotes ) {
+ $footnotes_decoded = json_decode( $footnotes, true );
+ if ( ! is_array( $footnotes_decoded ) ) {
+ return '';
+ }
+ $footnotes_sanitized = array();
+ foreach ( $footnotes_decoded as $footnote ) {
+ if ( ! empty( $footnote['content'] ) && ! empty( $footnote['id'] ) ) {
+ $footnotes_sanitized[] = array(
+ 'id' => sanitize_key( $footnote['id'] ),
+ 'content' => wp_unslash( wp_filter_post_kses( wp_slash( $footnote['content'] ) ) ),
+ );
+ }
+ }
+ return wp_json_encode( $footnotes_sanitized );
+}
+
+/**
+ * Adds the filters to filter footnotes meta field.
+ *
+ * @access private
+ * @since 6.3.2
+ */
+function _wp_footnotes_kses_init_filters() {
+ add_filter( 'sanitize_post_meta_footnotes', '_wp_filter_post_meta_footnotes' );
+}
+
+/**
+ * Removes the filters that filter footnotes meta field.
+ *
+ * @access private
+ * @since 6.3.2
+ */
+function _wp_footnotes_remove_filters() {
+ remove_filter( 'sanitize_post_meta_footnotes', '_wp_filter_post_meta_footnotes' );
+}
+
+/**
+ * Registers the filter of footnotes meta field if the user does not have unfiltered_html capability.
+ *
+ * @access private
+ * @since 6.3.2
+ */
+function _wp_footnotes_kses_init() {
+ _wp_footnotes_remove_filters();
+ if ( ! current_user_can( 'unfiltered_html' ) ) {
+ _wp_footnotes_kses_init_filters();
+ }
+}
+
+/**
+ * Initializes footnotes meta field filters when imported data should be filtered.
+ *
+ * This filter is the last being executed on force_filtered_html_on_import.
+ * If the input of the filter is true it means we are in an import situation and should
+ * enable kses, independently of the user capabilities.
+ * So in that case we call _wp_footnotes_kses_init_filters;
+ *
+ * @access private
+ * @since 6.3.2
+ *
+ * @param string $arg Input argument of the filter.
+ * @return string Input argument of the filter.
+ */
+function _wp_footnotes_force_filtered_html_on_import_filter( $arg ) {
+ // force_filtered_html_on_import is true we need to init the global styles kses filters.
+ if ( $arg ) {
+ _wp_footnotes_kses_init_filters();
+ }
+ return $arg;
+}
</ins></span></pre></div>
<a id="branches63srcwpincludesdefaultfiltersphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/6.3/src/wp-includes/default-filters.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/6.3/src/wp-includes/default-filters.php 2023-10-12 13:33:20 UTC (rev 56847)
+++ branches/6.3/src/wp-includes/default-filters.php 2023-10-12 13:51:19 UTC (rev 56848)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -616,6 +616,15 @@
</span><span class="cx" style="display: block; padding: 0 10px"> add_action( 'wp_footer', 'wp_maybe_inline_styles', 1 ); // Run for late-loaded styles in the footer.
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> /*
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ * Block specific actions and filters.
+ */
+
+// Footnotes Block.
+add_action( 'init', '_wp_footnotes_kses_init' );
+add_action( 'set_current_user', '_wp_footnotes_kses_init' );
+add_filter( 'force_filtered_html_on_import', '_wp_footnotes_force_filtered_html_on_import_filter', 999 );
+
+/*
</ins><span class="cx" style="display: block; padding: 0 10px"> * Disable "Post Attributes" for wp_navigation post type. The attributes are
</span><span class="cx" style="display: block; padding: 0 10px"> * also conditionally enabled when a site has custom templates. Block Theme
</span><span class="cx" style="display: block; padding: 0 10px"> * templates can be available for every post type.
</span></span></pre>
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