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<title>[52467] branches/5.6/src/wp-includes: Grouped backports to the 5.6 branch.</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/52467">52467</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/52467","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>desrosj</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2022-01-06 17:55:41 +0000 (Thu, 06 Jan 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'>Grouped backports to the 5.6 branch.

- Query: Improve sanitization within `WP_Tax_Query`.
- Query: Improve sanitization within `WP_Meta_Query`.
- Upgrade/Install: Avoid using `unserialize()` unnecessarily.
- Formatting: Correctly encode ASCII characters in post slugs.

Merges [52454-52457] to the 5.6 branch.
Props vortfu, dd32, ehtis, zieladam, whyisjake, xknown, peterwilsoncc, desrosj, iandunn.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#branches56srcwpadminincludesupgradephp">branches/5.6/src/wp-admin/includes/upgrade.php</a></li>
<li><a href="#branches56srcwpincludesclasswpmetaqueryphp">branches/5.6/src/wp-includes/class-wp-meta-query.php</a></li>
<li><a href="#branches56srcwpincludesclasswptaxqueryphp">branches/5.6/src/wp-includes/class-wp-tax-query.php</a></li>
<li><a href="#branches56srcwpincludesformattingphp">branches/5.6/src/wp-includes/formatting.php</a></li>
<li><a href="#branches56srcwpincludespostphp">branches/5.6/src/wp-includes/post.php</a></li>
</ul>

<h3>Property Changed</h3>
<ul>
<li><a href="#branches56">branches/5.6/</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<span class="cx" style="display: block; padding: 0 10px">Index: branches/5.6
</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/5.6 2022-01-06 17:54:57 UTC (rev 52466)
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+++ branches/5.6  2022-01-06 17:55:41 UTC (rev 52467)
</ins><a id="branches56"></a>
<div class="propset"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Property changes: branches/5.6</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/4.9:43557,43622
</span><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><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-/trunk:49645,49649-49651,49668,49673-49674,49677,49681,49685,49691,49702-49705,49708-49710,49713,49716,49718,49720,49722,49725-49726,49731,49736-49737,49739,49741,49744,49746,49751-49752,49759,49761-49764,49770,49772,49774,49779,49781-49784,49786,49791,49793-49795,49798-49801,49803-49805,49807,49823,49825-49826,49836,49838,49854,49860,49864-49866,49870,49872-49873,49876,49911,49913,49917,49919-49922,49938,49951-49952,49979,50003,50006,50035,50037,50039,50041,50049,50051,50053,50055,50058,50126,50176,50185,50192,50232,50267-50268,50285,50298-50299,50355,50379,50387,50413,50416,50432,50435-50436,50441-50446,50473-50474,50476,50479,50485-50487,50545,50579,50590,50592,50598,50670,50714,50717,50799,50940-50941,50984-50985,51426,51559-51560,51740,51810-51813,51828,51883
</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:49645,49649-49651,49668,49673-49674,49677,49681,49685,49691,49702-49705,49708-49710,49713,49716,49718,49720,49722,49725-49726,49731,49736-49737,49739,49741,49744,49746,49751-49752,49759,49761-49764,49770,49772,49774,49779,49781-49784,49786,49791,49793-49795,49798-49801,49803-49805,49807,49823,49825-49826,49836,49838,49854,49860,49864-49866,49870,49872-49873,49876,49911,49913,49917,49919-49922,49938,49951-49952,49979,50003,50006,50035,50037,50039,50041,50049,50051,50053,50055,50058,50126,50176,50185,50192,50232,50267-50268,50285,50298-50299,50355,50379,50387,50413,50416,50432,50435-50436,50441-50446,50473-50474,50476,50479,50485-50487,50545,50579,50590,50592,50598,50670,50714,50717,50799,50940-50941,50984-50985,51426,51559-51560,51740,51810-51813,51828,51883,52454-52457
</ins><span class="cx" style="display: block; padding: 0 10px">\ No newline at end of property
</span><a id="branches56srcwpadminincludesupgradephp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/5.6/src/wp-admin/includes/upgrade.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/5.6/src/wp-admin/includes/upgrade.php    2022-01-06 17:54:57 UTC (rev 52466)
+++ branches/5.6/src/wp-admin/includes/upgrade.php      2022-01-06 17:55:41 UTC (rev 52467)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -1658,8 +1658,8 @@
</span><span class="cx" style="display: block; padding: 0 10px">                $start = 0;
</span><span class="cx" style="display: block; padding: 0 10px">                while ( $rows = $wpdb->get_results( "SELECT option_name, option_value FROM $wpdb->options ORDER BY option_id LIMIT $start, 20" ) ) {
</span><span class="cx" style="display: block; padding: 0 10px">                        foreach ( $rows as $row ) {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                $value = $row->option_value;
-                               if ( ! @unserialize( $value ) ) {
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                         $value = maybe_unserialize( $row->option_value );
+                               if ( $value === $row->option_value ) {
</ins><span class="cx" style="display: block; padding: 0 10px">                                         $value = stripslashes( $value );
</span><span class="cx" style="display: block; padding: 0 10px">                                }
</span><span class="cx" style="display: block; padding: 0 10px">                                if ( $value !== $row->option_value ) {
</span></span></pre></div>
<a id="branches56srcwpincludesclasswpmetaqueryphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/5.6/src/wp-includes/class-wp-meta-query.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/5.6/src/wp-includes/class-wp-meta-query.php      2022-01-06 17:54:57 UTC (rev 52466)
+++ branches/5.6/src/wp-includes/class-wp-meta-query.php        2022-01-06 17:55:41 UTC (rev 52467)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -812,7 +812,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">                        $clause_compare  = strtoupper( $clause['compare'] );
</span><span class="cx" style="display: block; padding: 0 10px">                        $sibling_compare = strtoupper( $sibling['compare'] );
</span><span class="cx" style="display: block; padding: 0 10px">                        if ( in_array( $clause_compare, $compatible_compares, true ) && in_array( $sibling_compare, $compatible_compares, true ) ) {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                $alias = $sibling['alias'];
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                         $alias = preg_replace( '/\W/', '_', $sibling['alias'] );
</ins><span class="cx" style="display: block; padding: 0 10px">                                 break;
</span><span class="cx" style="display: block; padding: 0 10px">                        }
</span><span class="cx" style="display: block; padding: 0 10px">                }
</span></span></pre></div>
<a id="branches56srcwpincludesclasswptaxqueryphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/5.6/src/wp-includes/class-wp-tax-query.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/5.6/src/wp-includes/class-wp-tax-query.php       2022-01-06 17:54:57 UTC (rev 52466)
+++ branches/5.6/src/wp-includes/class-wp-tax-query.php 2022-01-06 17:55:41 UTC (rev 52467)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -527,7 +527,7 @@
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                        // The sibling must both have compatible operator to share its alias.
</span><span class="cx" style="display: block; padding: 0 10px">                        if ( in_array( strtoupper( $sibling['operator'] ), $compatible_operators, true ) ) {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                $alias = $sibling['alias'];
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                         $alias = preg_replace( '/\W/', '_', $sibling['alias'] );
</ins><span class="cx" style="display: block; padding: 0 10px">                                 break;
</span><span class="cx" style="display: block; padding: 0 10px">                        }
</span><span class="cx" style="display: block; padding: 0 10px">                }
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -556,7 +556,11 @@
</span><span class="cx" style="display: block; padding: 0 10px">                        return;
</span><span class="cx" style="display: block; padding: 0 10px">                }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                $query['terms'] = array_unique( (array) $query['terms'] );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         if ( 'slug' === $query['field'] || 'name' === $query['field'] ) {
+                       $query['terms'] = array_unique( (array) $query['terms'] );
+               } else {
+                       $query['terms'] = wp_parse_id_list( $query['terms'] );
+               }
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                if ( is_taxonomy_hierarchical( $query['taxonomy'] ) && $query['include_children'] ) {
</span><span class="cx" style="display: block; padding: 0 10px">                        $this->transform_query( $query, 'term_id' );
</span></span></pre></div>
<a id="branches56srcwpincludesformattingphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/5.6/src/wp-includes/formatting.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/5.6/src/wp-includes/formatting.php       2022-01-06 17:54:57 UTC (rev 52466)
+++ branches/5.6/src/wp-includes/formatting.php 2022-01-06 17:55:41 UTC (rev 52467)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -1138,12 +1138,14 @@
</span><span class="cx" style="display: block; padding: 0 10px">  * Encode the Unicode values to be used in the URI.
</span><span class="cx" style="display: block; padding: 0 10px">  *
</span><span class="cx" style="display: block; padding: 0 10px">  * @since 1.5.0
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ * @since 5.8.3 Added the `encode_ascii_characters` parameter.
</ins><span class="cx" style="display: block; padding: 0 10px">  *
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- * @param string $utf8_string
- * @param int    $length Max  length of the string
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ * @param string $utf8_string             String to encode.
+ * @param int    $length                  Max length of the string
+ * @param bool   $encode_ascii_characters Whether to encode ascii characters such as < " '
</ins><span class="cx" style="display: block; padding: 0 10px">  * @return string String with Unicode encoded for URI.
</span><span class="cx" style="display: block; padding: 0 10px">  */
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-function utf8_uri_encode( $utf8_string, $length = 0 ) {
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+function utf8_uri_encode( $utf8_string, $length = 0, $encode_ascii_characters = false ) {
</ins><span class="cx" style="display: block; padding: 0 10px">         $unicode        = '';
</span><span class="cx" style="display: block; padding: 0 10px">        $values         = array();
</span><span class="cx" style="display: block; padding: 0 10px">        $num_octets     = 1;
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -1158,11 +1160,14 @@
</span><span class="cx" style="display: block; padding: 0 10px">                $value = ord( $utf8_string[ $i ] );
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                if ( $value < 128 ) {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                        if ( $length && ( $unicode_length >= $length ) ) {
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                 $char                = chr( $value );
+                       $encoded_char        = $encode_ascii_characters ? rawurlencode( $char ) : $char;
+                       $encoded_char_length = strlen( $encoded_char );
+                       if ( $length && ( $unicode_length + $encoded_char_length ) > $length ) {
</ins><span class="cx" style="display: block; padding: 0 10px">                                 break;
</span><span class="cx" style="display: block; padding: 0 10px">                        }
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                        $unicode .= chr( $value );
-                       $unicode_length++;
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                 $unicode        .= $encoded_char;
+                       $unicode_length += $encoded_char_length;
</ins><span class="cx" style="display: block; padding: 0 10px">                 } else {
</span><span class="cx" style="display: block; padding: 0 10px">                        if ( count( $values ) == 0 ) {
</span><span class="cx" style="display: block; padding: 0 10px">                                if ( $value < 224 ) {
</span></span></pre></div>
<a id="branches56srcwpincludespostphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/5.6/src/wp-includes/post.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/5.6/src/wp-includes/post.php     2022-01-06 17:54:57 UTC (rev 52466)
+++ branches/5.6/src/wp-includes/post.php       2022-01-06 17:55:41 UTC (rev 52467)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -4728,7 +4728,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">                if ( $decoded_slug === $slug ) {
</span><span class="cx" style="display: block; padding: 0 10px">                        $slug = substr( $slug, 0, $length );
</span><span class="cx" style="display: block; padding: 0 10px">                } else {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                        $slug = utf8_uri_encode( $decoded_slug, $length );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                 $slug = utf8_uri_encode( $decoded_slug, $length, 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"> 
</span></span></pre>
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