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<title>[56851] branches/4.2/src: Grouped backports to the 4.2 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/56851">56851</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/56851","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>davidbaumwald</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2023-10-12 14:25:18 +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'>Grouped backports to the 4.2 branch.
- Comments: Prevent users who can not see a post from seeing comments on it.
- Shortcodes: Restrict ajax handler for media shortcode.
- Prevent unintended behavior when certain objects are unserialized.
Merges <a href="https://core.trac.wordpress.org/changeset/56835">[56835]</a>, <a href="https://core.trac.wordpress.org/changeset/56836">[56836]</a>, and <a href="https://core.trac.wordpress.org/changeset/56838">[56838]</a> to the 4.1 branch.
Props xknown, jorbin, joehoyle, peterwilsoncc, ehtis, tykoted, antpb.</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#branches42srcwpadminincludesajaxactionsphp">branches/4.2/src/wp-admin/includes/ajax-actions.php</a></li>
<li><a href="#branches42srcwpadminincludesclasswpcommentslisttablephp">branches/4.2/src/wp-admin/includes/class-wp-comments-list-table.php</a></li>
<li><a href="#branches42srcwpadminincludesclasswplisttablephp">branches/4.2/src/wp-admin/includes/class-wp-list-table.php</a></li>
<li><a href="#branches42srcwpadminincludesdashboardphp">branches/4.2/src/wp-admin/includes/dashboard.php</a></li>
<li><a href="#branches42srcwpincludesclasswpthemephp">branches/4.2/src/wp-includes/class-wp-theme.php</a></li>
<li><a href="#branches42srcwpincludesmediaphp">branches/4.2/src/wp-includes/media.php</a></li>
<li><a href="#branches42srcwpincludesshortcodesphp">branches/4.2/src/wp-includes/shortcodes.php</a></li>
</ul>
</div>
<div id="patch">
<h3>Diff</h3>
<a id="branches42srcwpadminincludesajaxactionsphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/4.2/src/wp-admin/includes/ajax-actions.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/4.2/src/wp-admin/includes/ajax-actions.php 2023-10-12 14:21:47 UTC (rev 56850)
+++ branches/4.2/src/wp-admin/includes/ajax-actions.php 2023-10-12 14:25:18 UTC (rev 56851)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -2799,6 +2799,22 @@
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> $shortcode = wp_unslash( $_POST['shortcode'] );
</span><span class="cx" style="display: block; padding: 0 10px">
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ // Only process previews for media related shortcodes:
+ $found_shortcodes = get_shortcode_tags_in_content( $shortcode );
+ $media_shortcodes = array(
+ 'audio',
+ 'embed',
+ 'playlist',
+ 'video',
+ 'gallery',
+ );
+
+ $other_shortcodes = array_diff( $found_shortcodes, $media_shortcodes );
+
+ if ( ! empty( $other_shortcodes ) ) {
+ wp_send_json_error();
+ }
+
</ins><span class="cx" style="display: block; padding: 0 10px"> if ( ! empty( $_POST['post_ID'] ) ) {
</span><span class="cx" style="display: block; padding: 0 10px"> $post = get_post( (int) $_POST['post_ID'] );
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -2805,7 +2821,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> // the embed shortcode requires a post
</span><span class="cx" style="display: block; padding: 0 10px"> if ( ! $post || ! current_user_can( 'edit_post', $post->ID ) ) {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- if ( 'embed' === $shortcode ) {
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ if ( in_array( 'embed', $found_shortcodes, true ) ) {
</ins><span class="cx" style="display: block; padding: 0 10px"> wp_send_json_error();
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span><span class="cx" style="display: block; padding: 0 10px"> } else {
</span></span></pre></div>
<a id="branches42srcwpadminincludesclasswpcommentslisttablephp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/4.2/src/wp-admin/includes/class-wp-comments-list-table.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/4.2/src/wp-admin/includes/class-wp-comments-list-table.php 2023-10-12 14:21:47 UTC (rev 56850)
+++ branches/4.2/src/wp-admin/includes/class-wp-comments-list-table.php 2023-10-12 14:25:18 UTC (rev 56851)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -370,6 +370,19 @@
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> $this->user_can = current_user_can( 'edit_comment', $comment->comment_ID );
</span><span class="cx" style="display: block; padding: 0 10px">
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ $edit_post_cap = $post ? 'edit_post' : 'edit_posts';
+ if (
+ current_user_can( $edit_post_cap, $comment->comment_post_ID ) ||
+ (
+ empty( $post->post_password ) &&
+ current_user_can( 'read_post', $comment->comment_post_ID )
+ )
+ ) {
+ // The user has access to the post
+ } else {
+ return false;
+ }
+
</ins><span class="cx" style="display: block; padding: 0 10px"> echo "<tr id='comment-$comment->comment_ID' class='$the_comment_class'>";
</span><span class="cx" style="display: block; padding: 0 10px"> $this->single_row_columns( $comment );
</span><span class="cx" style="display: block; padding: 0 10px"> echo "</tr>\n";
</span></span></pre></div>
<a id="branches42srcwpadminincludesclasswplisttablephp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/4.2/src/wp-admin/includes/class-wp-list-table.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/4.2/src/wp-admin/includes/class-wp-list-table.php 2023-10-12 14:21:47 UTC (rev 56850)
+++ branches/4.2/src/wp-admin/includes/class-wp-list-table.php 2023-10-12 14:25:18 UTC (rev 56851)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -609,6 +609,20 @@
</span><span class="cx" style="display: block; padding: 0 10px"> protected function comments_bubble( $post_id, $pending_comments ) {
</span><span class="cx" style="display: block; padding: 0 10px"> $pending_phrase = sprintf( __( '%s pending' ), number_format( $pending_comments ) );
</span><span class="cx" style="display: block; padding: 0 10px">
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ $post_object = get_post( $post_id );
+ $edit_post_cap = $post_object ? 'edit_post' : 'edit_posts';
+ if (
+ current_user_can( $edit_post_cap, $post_id ) ||
+ (
+ empty( $post_object->post_password ) &&
+ current_user_can( 'read_post', $post_id )
+ )
+ ) {
+ // The user has access to the post and thus can see comments
+ } else {
+ return false;
+ }
+
</ins><span class="cx" style="display: block; padding: 0 10px"> if ( $pending_comments )
</span><span class="cx" style="display: block; padding: 0 10px"> echo '<strong>';
</span><span class="cx" style="display: block; padding: 0 10px">
</span></span></pre></div>
<a id="branches42srcwpadminincludesdashboardphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/4.2/src/wp-admin/includes/dashboard.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/4.2/src/wp-admin/includes/dashboard.php 2023-10-12 14:21:47 UTC (rev 56850)
+++ branches/4.2/src/wp-admin/includes/dashboard.php 2023-10-12 14:25:18 UTC (rev 56851)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -786,8 +786,18 @@
</span><span class="cx" style="display: block; padding: 0 10px"> echo '<h4>' . __( 'Comments' ) . '</h4>';
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> echo '<div id="the-comment-list" data-wp-lists="list:comment">';
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- foreach ( $comments as $comment )
- _wp_dashboard_recent_comments_row( $comment );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ foreach ( $comments as $comment ) {
+ $comment_post = get_post( $comment->comment_post_ID );
+ if (
+ current_user_can( 'edit_post', $comment->comment_post_ID ) ||
+ (
+ empty( $comment_post->post_password ) &&
+ current_user_can( 'read_post', $comment->comment_post_ID )
+ )
+ ) {
+ _wp_dashboard_recent_comments_row( $comment );
+ }
+ }
</ins><span class="cx" style="display: block; padding: 0 10px"> echo '</div>';
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> if ( current_user_can('edit_posts') )
</span></span></pre></div>
<a id="branches42srcwpincludesclasswpthemephp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/4.2/src/wp-includes/class-wp-theme.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/4.2/src/wp-includes/class-wp-theme.php 2023-10-12 14:21:47 UTC (rev 56850)
+++ branches/4.2/src/wp-includes/class-wp-theme.php 2023-10-12 14:25:18 UTC (rev 56851)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -477,6 +477,28 @@
</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"> /**
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ * Perform reinitialization tasks.
+ *
+ * Prevents a callback from being injected during unserialization of an object.
+ *
+ * @return void
+ */
+ public function __wakeup() {
+ if ( $this->parent && ! $this->parent instanceof self ) {
+ throw new UnexpectedValueException();
+ }
+ if ( $this->headers && ! is_array( $this->headers ) ) {
+ throw new UnexpectedValueException();
+ }
+ foreach ( $this->headers as $value ) {
+ if ( ! is_string( $value ) ) {
+ throw new UnexpectedValueException();
+ }
+ }
+ $this->headers_sanitized = array();
+ }
+
+ /**
</ins><span class="cx" style="display: block; padding: 0 10px"> * Adds theme data to cache.
</span><span class="cx" style="display: block; padding: 0 10px"> *
</span><span class="cx" style="display: block; padding: 0 10px"> * Cache entries keyed by the theme and the type of data.
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -1235,4 +1257,16 @@
</span><span class="cx" style="display: block; padding: 0 10px"> // Don't mark up; Do translate.
</span><span class="cx" style="display: block; padding: 0 10px"> return strnatcasecmp( $a->display( 'Name', false, true ), $b->display( 'Name', false, true ) );
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
+ private static function _check_headers_property_has_correct_type( $headers ) {
+ if ( ! is_array( $headers ) ) {
+ return false;
+ }
+ foreach ( $headers as $key => $value ) {
+ if ( ! is_string( $key ) || ! is_string( $value ) ) {
+ return false;
+ }
+ }
+ return true;
+ }
</ins><span class="cx" style="display: block; padding: 0 10px"> }
</span></span></pre></div>
<a id="branches42srcwpincludesmediaphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/4.2/src/wp-includes/media.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/4.2/src/wp-includes/media.php 2023-10-12 14:21:47 UTC (rev 56850)
+++ branches/4.2/src/wp-includes/media.php 2023-10-12 14:25:18 UTC (rev 56851)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -1010,11 +1010,24 @@
</span><span class="cx" style="display: block; padding: 0 10px"> $attachments[$val->ID] = $_attachments[$key];
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span><span class="cx" style="display: block; padding: 0 10px"> } elseif ( ! empty( $atts['exclude'] ) ) {
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ $post_parent_id = $id;
</ins><span class="cx" style="display: block; padding: 0 10px"> $attachments = get_children( array( 'post_parent' => $id, 'exclude' => $atts['exclude'], 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => $atts['order'], 'orderby' => $atts['orderby'] ) );
</span><span class="cx" style="display: block; padding: 0 10px"> } else {
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ $post_parent_id = $id;
</ins><span class="cx" style="display: block; padding: 0 10px"> $attachments = get_children( array( 'post_parent' => $id, 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => $atts['order'], 'orderby' => $atts['orderby'] ) );
</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">+ if ( ! empty( $post_parent_id ) ) {
+ $post_parent = get_post( $post_parent_id );
+
+ // terminate the shortcode execution if user cannot read the post or password-protected
+ if (
+ ( ! is_post_publicly_viewable( $post_parent->ID ) && ! current_user_can( 'read_post', $post_parent->ID ) )
+ || post_password_required( $post_parent ) ) {
+ return '';
+ }
+ }
+
</ins><span class="cx" style="display: block; padding: 0 10px"> if ( empty( $attachments ) ) {
</span><span class="cx" style="display: block; padding: 0 10px"> return '';
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -1305,6 +1318,15 @@
</span><span class="cx" style="display: block; padding: 0 10px"> $attachments = get_children( $args );
</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">+ if ( ! empty( $args['post_parent'] ) ) {
+ $post_parent = get_post( $id );
+
+ // terminate the shortcode execution if user cannot read the post or password-protected
+ if ( ! current_user_can( 'read_post', $post_parent->ID ) || post_password_required( $post_parent ) ) {
+ return '';
+ }
+ }
+
</ins><span class="cx" style="display: block; padding: 0 10px"> if ( empty( $attachments ) ) {
</span><span class="cx" style="display: block; padding: 0 10px"> return '';
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span></span></pre></div>
<a id="branches42srcwpincludesshortcodesphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: branches/4.2/src/wp-includes/shortcodes.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- branches/4.2/src/wp-includes/shortcodes.php 2023-10-12 14:21:47 UTC (rev 56850)
+++ branches/4.2/src/wp-includes/shortcodes.php 2023-10-12 14:25:18 UTC (rev 56851)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -173,8 +173,46 @@
</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"> /**
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- * Search content for shortcodes and filter shortcodes through their hooks.
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ * Returns a list of registered shortcode names found in the given content.
</ins><span class="cx" style="display: block; padding: 0 10px"> *
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ * Example usage:
+ *
+ * get_shortcode_tags_in_content( '[audio src="file.mp3"][/audio] [foo] [gallery ids="1,2,3"]' );
+ * // array( 'audio', 'gallery' )
+ *
+ * @since 6.3.2
+ *
+ * @param string $content The content to check.
+ * @return string[] An array of registered shortcode names found in the content.
+ */
+function get_shortcode_tags_in_content( $content ) {
+ if ( false === strpos( $content, '[' ) ) {
+ return array();
+ }
+
+ preg_match_all( '/' . get_shortcode_regex() . '/', $content, $matches, PREG_SET_ORDER );
+ if ( empty( $matches ) ) {
+ return array();
+ }
+
+ $tags = array();
+ foreach ( $matches as $shortcode ) {
+ $tags[] = $shortcode[2];
+
+ if ( ! empty( $shortcode[5] ) ) {
+ $deep_tags = get_shortcode_tags_in_content( $shortcode[5] );
+ if ( ! empty( $deep_tags ) ) {
+ $tags = array_merge( $tags, $deep_tags );
+ }
+ }
+ }
+
+ return $tags;
+}
+
+/**
+ * Searches content for shortcodes and filter shortcodes through their hooks.
+ *
</ins><span class="cx" style="display: block; padding: 0 10px"> * If there are no shortcode tags defined, then the content will be returned
</span><span class="cx" style="display: block; padding: 0 10px"> * without any filtering. This might cause issues when plugins are disabled but
</span><span class="cx" style="display: block; padding: 0 10px"> * the shortcode will still show up in the post or content.
</span></span></pre>
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