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<title>[47887] trunk/src: Comments: Ensure that unmoderated comments won't be search indexed.</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/47887">47887</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/47887","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>whyisjake</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2020-06-02 20:10:02 +0000 (Tue, 02 Jun 2020)</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'>Comments: Ensure that unmoderated comments won't be search indexed.

After a comment is submitted, only allow a brief window where the comment is live on the site. 

Fixes <a href="https://core.trac.wordpress.org/ticket/49956">#49956</a>.
Props: jonkolbert, ayeshrajans, Asif2BD, peterwilsoncc, imath, audrasjb, jonoaldersonwp, whyisjake.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunksrcwpcommentspostphp">trunk/src/wp-comments-post.php</a></li>
<li><a href="#trunksrcwpincludesclasswalkercommentphp">trunk/src/wp-includes/class-walker-comment.php</a></li>
<li><a href="#trunksrcwpincludesclasswpcommentqueryphp">trunk/src/wp-includes/class-wp-comment-query.php</a></li>
<li><a href="#trunksrcwpincludesclasswpphp">trunk/src/wp-includes/class-wp.php</a></li>
<li><a href="#trunksrcwpincludescommentphp">trunk/src/wp-includes/comment.php</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunksrcwpcommentspostphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/wp-comments-post.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-comments-post.php    2020-06-02 17:03:06 UTC (rev 47886)
+++ trunk/src/wp-comments-post.php      2020-06-02 20:10:02 UTC (rev 47887)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -56,8 +56,8 @@
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px"> $location = empty( $_POST['redirect_to'] ) ? get_comment_link( $comment ) : $_POST['redirect_to'] . '#comment-' . $comment->comment_ID;
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-// Add specific query arguments to display the awaiting moderation message.
-if ( 'unapproved' === wp_get_comment_status( $comment ) && ! empty( $comment->comment_author_email ) ) {
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+// If user didn't consent to cookies, add specific query arguments to display the awaiting moderation message.
+if ( ! $cookies_consent && 'unapproved' === wp_get_comment_status( $comment ) && ! empty( $comment->comment_author_email ) ) {
</ins><span class="cx" style="display: block; padding: 0 10px">         $location = add_query_arg(
</span><span class="cx" style="display: block; padding: 0 10px">                array(
</span><span class="cx" style="display: block; padding: 0 10px">                        'unapproved'      => $comment->comment_ID,
</span></span></pre></div>
<a id="trunksrcwpincludesclasswalkercommentphp"></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/class-walker-comment.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-includes/class-walker-comment.php    2020-06-02 17:03:06 UTC (rev 47886)
+++ trunk/src/wp-includes/class-walker-comment.php      2020-06-02 20:10:02 UTC (rev 47887)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -181,6 +181,10 @@
</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><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                if ( 'comment' === $comment->comment_type ) {
+                       add_filter( 'comment_text', array( $this, 'comment_text' ), 40, 2 );
+               }
+
</ins><span class="cx" style="display: block; padding: 0 10px">                 if ( ( 'pingback' === $comment->comment_type || 'trackback' === $comment->comment_type ) && $args['short_ping'] ) {
</span><span class="cx" style="display: block; padding: 0 10px">                        ob_start();
</span><span class="cx" style="display: block; padding: 0 10px">                        $this->ping( $comment, $depth, $args );
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -194,6 +198,10 @@
</span><span class="cx" style="display: block; padding: 0 10px">                        $this->comment( $comment, $depth, $args );
</span><span class="cx" style="display: block; padding: 0 10px">                        $output .= ob_get_clean();
</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 ( 'comment' === $comment->comment_type ) {
+                       remove_filter( 'comment_text', array( $this, 'comment_text' ), 40, 2 );
+               }
</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 class="lines" style="display: block; padding: 0 10px; color: #888">@@ -245,6 +253,26 @@
</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">+         * Remove links from the pending comment's text if the commenter has not consent to the comment cookie.
+        *
+        * @since 5.4.2
+        *
+        * @param string          $comment_text Text of the current comment.
+        * @param WP_Comment|null $comment      The comment object.
+        * @return string                       Text of the current comment.
+        */
+       function comment_text( $comment_text, $comment ) {
+               $commenter          = wp_get_current_commenter();
+               $show_pending_links = ! empty( $commenter['comment_author'] );
+
+               if ( '0' == $comment->comment_approved && ! $show_pending_links ) {
+                       return wp_kses( $comment_text, array() );
+               }
+
+               return $comment_text;
+       }
+
+       /**
</ins><span class="cx" style="display: block; padding: 0 10px">          * Outputs a single comment.
</span><span class="cx" style="display: block; padding: 0 10px">         *
</span><span class="cx" style="display: block; padding: 0 10px">         * @since 3.6.0
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -264,7 +292,8 @@
</span><span class="cx" style="display: block; padding: 0 10px">                        $add_below = 'div-comment';
</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">-                $commenter = wp_get_current_commenter();
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         $commenter          = wp_get_current_commenter();
+               $show_pending_links = isset( $commenter['comment_author'] ) && $commenter['comment_author'];
</ins><span class="cx" style="display: block; padding: 0 10px">                 if ( $commenter['comment_author_email'] ) {
</span><span class="cx" style="display: block; padding: 0 10px">                        $moderation_note = __( 'Your comment is awaiting moderation.' );
</span><span class="cx" style="display: block; padding: 0 10px">                } else {
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -279,14 +308,19 @@
</span><span class="cx" style="display: block; padding: 0 10px">                <div class="comment-author vcard">
</span><span class="cx" style="display: block; padding: 0 10px">                        <?php
</span><span class="cx" style="display: block; padding: 0 10px">                        if ( 0 != $args['avatar_size'] ) {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                echo get_avatar( $comment, $args['avatar_size'] );}
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                         echo get_avatar( $comment, $args['avatar_size'] );
+                       }
</ins><span class="cx" style="display: block; padding: 0 10px">                         ?>
</span><span class="cx" style="display: block; padding: 0 10px">                        <?php
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                printf(
-                                       /* translators: %s: Comment author link. */
-                                       __( '%s <span class="says">says:</span>' ),
-                                       sprintf( '<cite class="fn">%s</cite>', get_comment_author_link( $comment ) )
-                               );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                 $comment_author = get_comment_author_link( $comment );
+                       if ( '0' == $comment->comment_approved && ! $show_pending_links ) {
+                               $comment_author = get_comment_author( $comment );
+                       }
+                       printf(
+                               /* translators: %s: Comment author link. */
+                               __( '%s <span class="says">says:</span>' ),
+                               sprintf( '<cite class="fn">%s</cite>', $comment_author )
+                       );
</ins><span class="cx" style="display: block; padding: 0 10px">                         ?>
</span><span class="cx" style="display: block; padding: 0 10px">                </div>
</span><span class="cx" style="display: block; padding: 0 10px">                <?php if ( '0' == $comment->comment_approved ) : ?>
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -354,7 +388,8 @@
</span><span class="cx" style="display: block; padding: 0 10px">        protected function html5_comment( $comment, $depth, $args ) {
</span><span class="cx" style="display: block; padding: 0 10px">                $tag = ( 'div' === $args['style'] ) ? 'div' : 'li';
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                $commenter = wp_get_current_commenter();
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         $commenter          = wp_get_current_commenter();
+               $show_pending_links = ! empty( $commenter['comment_author'] );
</ins><span class="cx" style="display: block; padding: 0 10px">                 if ( $commenter['comment_author_email'] ) {
</span><span class="cx" style="display: block; padding: 0 10px">                        $moderation_note = __( 'Your comment is awaiting moderation.' );
</span><span class="cx" style="display: block; padding: 0 10px">                } else {
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -372,11 +407,15 @@
</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">                                                <?php
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                                        printf(
-                                                               /* translators: %s: Comment author link. */
-                                                               __( '%s <span class="says">says:</span>' ),
-                                                               sprintf( '<b class="fn">%s</b>', get_comment_author_link( $comment ) )
-                                                       );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                                         $comment_author = get_comment_author_link( $comment );
+                                               if ( '0' == $comment->comment_approved && ! $show_pending_links ) {
+                                                       $comment_author = get_comment_author( $comment );
+                                               }
+                                               printf(
+                                                       /* translators: %s: Comment author link. */
+                                                       __( '%s <span class="says">says:</span>' ),
+                                                       sprintf( '<b class="fn">%s</b>', $comment_author )
+                                               );
</ins><span class="cx" style="display: block; padding: 0 10px">                                                 ?>
</span><span class="cx" style="display: block; padding: 0 10px">                                        </div><!-- .comment-author -->
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -402,18 +441,20 @@
</span><span class="cx" style="display: block; padding: 0 10px">                                </div><!-- .comment-content -->
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                                <?php
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                comment_reply_link(
-                                       array_merge(
-                                               $args,
-                                               array(
-                                                       'add_below' => 'div-comment',
-                                                       'depth'     => $depth,
-                                                       'max_depth' => $args['max_depth'],
-                                                       'before'    => '<div class="reply">',
-                                                       'after'     => '</div>',
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                         if ( '1' == $comment->comment_approved || $show_pending_links ) {
+                                       comment_reply_link(
+                                               array_merge(
+                                                       $args,
+                                                       array(
+                                                               'add_below' => 'div-comment',
+                                                               'depth'     => $depth,
+                                                               'max_depth' => $args['max_depth'],
+                                                               'before'    => '<div class="reply">',
+                                                               'after'     => '</div>',
+                                                       )
</ins><span class="cx" style="display: block; padding: 0 10px">                                                 )
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                        )
-                               );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                                 );
+                               }
</ins><span class="cx" style="display: block; padding: 0 10px">                                 ?>
</span><span class="cx" style="display: block; padding: 0 10px">                        </article><!-- .comment-body -->
</span><span class="cx" style="display: block; padding: 0 10px">                <?php
</span></span></pre></div>
<a id="trunksrcwpincludesclasswpcommentqueryphp"></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/class-wp-comment-query.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-includes/class-wp-comment-query.php  2020-06-02 17:03:06 UTC (rev 47886)
+++ trunk/src/wp-includes/class-wp-comment-query.php    2020-06-02 20:10:02 UTC (rev 47887)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -553,10 +553,15 @@
</span><span class="cx" style="display: block; padding: 0 10px">                                // Numeric values are assumed to be user ids.
</span><span class="cx" style="display: block; padding: 0 10px">                                if ( is_numeric( $unapproved_identifier ) ) {
</span><span class="cx" style="display: block; padding: 0 10px">                                        $approved_clauses[] = $wpdb->prepare( "( user_id = %d AND comment_approved = '0' )", $unapproved_identifier );
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                         } else {
</ins><span class="cx" style="display: block; padding: 0 10px">                                         // Otherwise we match against email addresses.
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                } else {
-                                       $approved_clauses[] = $wpdb->prepare( "( comment_author_email = %s AND comment_approved = '0' )", $unapproved_identifier );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                                 if ( ! empty( $_GET['unapproved'] ) && ! empty( $_GET['moderation-hash'] ) ) {
+                                               // Only include requested comment.
+                                               $approved_clauses[] = $wpdb->prepare( "( comment_author_email = %s AND comment_approved = '0' AND comment_ID = %d )", $unapproved_identifier, (int) $_GET['unapproved'] );
+                                       } else {
+                                               // Include all of the author's unapproved comments.
+                                               $approved_clauses[] = $wpdb->prepare( "( comment_author_email = %s AND comment_approved = '0' )", $unapproved_identifier );
+                                       }
</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></div>
<a id="trunksrcwpincludesclasswpphp"></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/class-wp.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-includes/class-wp.php        2020-06-02 17:03:06 UTC (rev 47886)
+++ trunk/src/wp-includes/class-wp.php  2020-06-02 20:10:02 UTC (rev 47887)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -404,6 +404,10 @@
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                if ( is_user_logged_in() ) {
</span><span class="cx" style="display: block; padding: 0 10px">                        $headers = array_merge( $headers, wp_get_nocache_headers() );
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                } elseif ( ! empty( $_GET['unapproved'] ) && ! empty( $_GET['moderation-hash'] ) ) {
+                       // Unmoderated comments are only visible for one minute via the moderation hash.
+                       $headers['Expires']       = gmdate( 'D, d M Y H:i:s', time() + MINUTE_IN_SECONDS );
+                       $headers['Cache-Control'] = 'max-age=60, must-revalidate';
</ins><span class="cx" style="display: block; padding: 0 10px">                 }
</span><span class="cx" style="display: block; padding: 0 10px">                if ( ! empty( $this->query_vars['error'] ) ) {
</span><span class="cx" style="display: block; padding: 0 10px">                        $status = (int) $this->query_vars['error'];
</span></span></pre></div>
<a id="trunksrcwpincludescommentphp"></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/comment.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-includes/comment.php 2020-06-02 17:03:06 UTC (rev 47886)
+++ trunk/src/wp-includes/comment.php   2020-06-02 20:10:02 UTC (rev 47887)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -1852,7 +1852,12 @@
</span><span class="cx" style="display: block; padding: 0 10px">                $comment    = get_comment( $comment_id );
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                if ( $comment && hash_equals( $_GET['moderation-hash'], wp_hash( $comment->comment_date_gmt ) ) ) {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                        $commenter_email = $comment->comment_author_email;
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                 // The comment will only be viewable by the comment author for 1 minute.
+                       $comment_preview_expires = strtotime( $comment->comment_date_gmt . '+1 minute' );
+
+                       if ( time() < $comment_preview_expires ) {
+                               $commenter_email = $comment->comment_author_email;
+                       }
</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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