Ticket #43442: 43442.2.diff

src/wp-includes/comment.php

@@ -3278 +3278 @@
 /**
  * Registers the personal data exporter for comments
  *
+ * @since 4.9.6
+ *
  * @param array   $exporters   An array of personal data exporters.
  * @return array  An array of personal data exporters.
  */
@@ -3375 +3377 @@
                 'done' => $done,
         );
 }
+
+/**
+ * Registers the personal data eraser for comments
+ *
+ * @since 4.9.6
+ *
+ * @param array   $erasers   An array of personal data erasers.
+ * @return array  An array of personal data erasers.
+ */
+function wp_register_comment_personal_data_eraser( $erasers ) {
+        $erasers[] = array(
+                'eraser_friendly_name' => __( 'WordPress Comments' ),
+                'callback'             => 'wp_comments_personal_data_eraser',
+        );
+
+        return $erasers;
+}
+
+/**
+ * Erases personal data associated with an email address from the comments table.
+ *
+ * @since 4.9.6
+ *
+ * @param string  $email_address The comment author email address.
+ * @param int     $page          Comment page.
+ * @return array
+ */
+function wp_comments_personal_data_eraser( $email_address, $page = 1 ) {
+
+        // Limit us to 500 comments at a time to avoid timing out
+        $number = 500;
+        $page = (int) $page;
+
+        $comments = get_comments(
+                array(
+                        'author_email'       => $email_address,
+                        'number'             => $number,
+                        'paged'              => $page,
+                        'order_by'           => 'comment_ID',
+                        'order'              => 'ASC',
+                        'include_unapproved' => true,
+                )
+        );
+
+        // TODO - use anonymization functions for author, author email and IP
+        // from 43545 when they become available
+        foreach ( (array) $comments as $comment ) {
+                $anonymized_comment = array();
+                $anonymized_comment['comment_ID']           = $comment->comment_ID;
+                $anonymized_comment['comment_agent']        = '';
+                $anonymized_comment['comment_author']       = __( 'Anonymous' );
+                $anonymized_comment['comment_author_email'] = '';
+                $anonymized_comment['comment_author_IP']    = '0.0.0.0';
+                $anonymized_comment['comment_author_url']   = '';
+                $anonymized_comment['user_id']              = 0;
+                wp_update_comment( $anonymized_comment );
+        }
+
+        $done = count( $comments ) < $number;
+
+        return array(
+                'num_items_removed' => count( $comments ),
+                'num_items_retained' => 0,
+                'messages' => array(),
+                'done' => $done,
+        );
+}

src/wp-includes/default-filters.php

@@ -329 +329 @@
 add_action( 'do_robots', 'do_robots' );
 add_action( 'set_comment_cookies', 'wp_set_comment_cookies', 10, 3 );
 add_filter( 'wp_privacy_personal_data_exporters', 'wp_register_comment_personal_data_exporter', 10 );
+add_filter( 'wp_privacy_personal_data_erasers', 'wp_register_comment_personal_data_eraser', 10 );
 add_action( 'sanitize_comment_cookies', 'sanitize_comment_cookies' );
 add_action( 'admin_print_scripts', 'print_emoji_detection_script' );
 add_action( 'admin_print_scripts', 'print_head_scripts', 20 );