diff options
Diffstat (limited to 'plugins/jetpack/vendor/automattic/jetpack-sync/src/modules/class-comments.php')
| -rw-r--r-- | plugins/jetpack/vendor/automattic/jetpack-sync/src/modules/class-comments.php | 411 |
1 files changed, 411 insertions, 0 deletions
diff --git a/plugins/jetpack/vendor/automattic/jetpack-sync/src/modules/class-comments.php b/plugins/jetpack/vendor/automattic/jetpack-sync/src/modules/class-comments.php new file mode 100644 index 00000000..e956748c --- /dev/null +++ b/plugins/jetpack/vendor/automattic/jetpack-sync/src/modules/class-comments.php @@ -0,0 +1,411 @@ +<?php +/** + * Comments sync module. + * + * @package automattic/jetpack-sync + */ + +namespace Automattic\Jetpack\Sync\Modules; + +use Automattic\Jetpack\Sync\Settings; + +/** + * Class to handle sync for comments. + */ +class Comments extends Module { + /** + * Sync module name. + * + * @access public + * + * @return string + */ + public function name() { + return 'comments'; + } + + /** + * The id field in the database. + * + * @access public + * + * @return string + */ + public function id_field() { + return 'comment_ID'; + } + + /** + * The table in the database. + * + * @access public + * + * @return string + */ + public function table_name() { + return 'comments'; + } + + /** + * Retrieve a comment by its ID. + * + * @access public + * + * @param string $object_type Type of the sync object. + * @param int $id ID of the sync object. + * @return \WP_Comment|bool Filtered \WP_Comment object, or false if the object is not a comment. + */ + public function get_object_by_id( $object_type, $id ) { + $comment_id = intval( $id ); + if ( 'comment' === $object_type ) { + $comment = get_comment( $comment_id ); + if ( $comment ) { + return $this->filter_comment( $comment ); + } + } + + return false; + } + + /** + * Initialize comments action listeners. + * Also responsible for initializing comment meta listeners. + * + * @access public + * + * @param callable $callable Action handler callable. + */ + public function init_listeners( $callable ) { + add_action( 'wp_insert_comment', $callable, 10, 2 ); + add_action( 'deleted_comment', $callable ); + add_action( 'trashed_comment', $callable ); + add_action( 'spammed_comment', $callable ); + add_action( 'trashed_post_comments', $callable, 10, 2 ); + add_action( 'untrash_post_comments', $callable ); + add_action( 'comment_approved_to_unapproved', $callable ); + add_action( 'comment_unapproved_to_approved', $callable ); + add_action( 'jetpack_modified_comment_contents', $callable, 10, 2 ); + add_action( 'untrashed_comment', $callable, 10, 2 ); + add_action( 'unspammed_comment', $callable, 10, 2 ); + add_filter( 'wp_update_comment_data', array( $this, 'handle_comment_contents_modification' ), 10, 3 ); + add_filter( 'jetpack_sync_before_enqueue_wp_insert_comment', array( $this, 'only_allow_white_listed_comment_types' ) ); + + /** + * Even though it's messy, we implement these hooks because + * the edit_comment hook doesn't include the data + * so this saves us a DB read for every comment event. + */ + foreach ( $this->get_whitelisted_comment_types() as $comment_type ) { + foreach ( array( 'unapproved', 'approved' ) as $comment_status ) { + $comment_action_name = "comment_{$comment_status}_{$comment_type}"; + add_action( $comment_action_name, $callable, 10, 2 ); + } + } + + // Listen for meta changes. + $this->init_listeners_for_meta_type( 'comment', $callable ); + $this->init_meta_whitelist_handler( 'comment', array( $this, 'filter_meta' ) ); + } + + /** + * Handler for any comment content updates. + * + * @access public + * + * @param array $new_comment The new, processed comment data. + * @param array $old_comment The old, unslashed comment data. + * @param array $new_comment_with_slashes The new, raw comment data. + * @return array The new, processed comment data. + */ + public function handle_comment_contents_modification( $new_comment, $old_comment, $new_comment_with_slashes ) { + $changes = array(); + $content_fields = array( + 'comment_author', + 'comment_author_email', + 'comment_author_url', + 'comment_content', + ); + foreach ( $content_fields as $field ) { + if ( $new_comment_with_slashes[ $field ] !== $old_comment[ $field ] ) { + $changes[ $field ] = array( $new_comment[ $field ], $old_comment[ $field ] ); + } + } + + if ( ! empty( $changes ) ) { + /** + * Signals to the sync listener that this comment's contents were modified and a sync action + * reflecting the change(s) to the content should be sent + * + * @since 4.9.0 + * + * @param int $new_comment['comment_ID'] ID of comment whose content was modified + * @param mixed $changes Array of changed comment fields with before and after values + */ + do_action( 'jetpack_modified_comment_contents', $new_comment['comment_ID'], $changes ); + } + return $new_comment; + } + + /** + * Initialize comments action listeners for full sync. + * + * @access public + * + * @param callable $callable Action handler callable. + */ + public function init_full_sync_listeners( $callable ) { + add_action( 'jetpack_full_sync_comments', $callable ); // Also send comments meta. + } + + /** + * Gets a filtered list of comment types that sync can hook into. + * + * @access public + * + * @return array Defaults to [ '', 'trackback', 'pingback' ]. + */ + public function get_whitelisted_comment_types() { + /** + * Comment types present in this list will sync their status changes to WordPress.com. + * + * @since 7.6.0 + * + * @param array A list of comment types. + */ + return apply_filters( + 'jetpack_sync_whitelisted_comment_types', + array( '', 'trackback', 'pingback' ) + ); + } + + /** + * Prevents any comment types that are not in the whitelist from being enqueued and sent to WordPress.com. + * + * @param array $args Arguments passed to wp_insert_comment. + * + * @return bool or array $args Arguments passed to wp_insert_comment + */ + public function only_allow_white_listed_comment_types( $args ) { + $comment = $args[1]; + + if ( ! in_array( $comment->comment_type, $this->get_whitelisted_comment_types(), true ) ) { + return false; + } + + return $args; + } + + /** + * Initialize the module in the sender. + * + * @access public + */ + public function init_before_send() { + add_filter( 'jetpack_sync_before_send_wp_insert_comment', array( $this, 'expand_wp_insert_comment' ) ); + + foreach ( $this->get_whitelisted_comment_types() as $comment_type ) { + foreach ( array( 'unapproved', 'approved' ) as $comment_status ) { + $comment_action_name = "comment_{$comment_status}_{$comment_type}"; + add_filter( + 'jetpack_sync_before_send_' . $comment_action_name, + array( + $this, + 'expand_wp_insert_comment', + ) + ); + } + } + + // Full sync. + add_filter( 'jetpack_sync_before_send_jetpack_full_sync_comments', array( $this, 'expand_comment_ids' ) ); + } + + /** + * Enqueue the comments actions for full sync. + * + * @access public + * + * @param array $config Full sync configuration for this sync module. + * @param int $max_items_to_enqueue Maximum number of items to enqueue. + * @param boolean $state True if full sync has finished enqueueing this module, false otherwise. + * @return array Number of actions enqueued, and next module state. + */ + public function enqueue_full_sync_actions( $config, $max_items_to_enqueue, $state ) { + global $wpdb; + return $this->enqueue_all_ids_as_action( 'jetpack_full_sync_comments', $wpdb->comments, 'comment_ID', $this->get_where_sql( $config ), $max_items_to_enqueue, $state ); + } + + /** + * Retrieve an estimated number of actions that will be enqueued. + * + * @access public + * + * @param array $config Full sync configuration for this sync module. + * @return int Number of items yet to be enqueued. + */ + public function estimate_full_sync_actions( $config ) { + global $wpdb; + + $query = "SELECT count(*) FROM $wpdb->comments"; + + $where_sql = $this->get_where_sql( $config ); + if ( $where_sql ) { + $query .= ' WHERE ' . $where_sql; + } + + // TODO: Call $wpdb->prepare on the following query. + // phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared + $count = $wpdb->get_var( $query ); + + return (int) ceil( $count / self::ARRAY_CHUNK_SIZE ); + } + + /** + * Retrieve the WHERE SQL clause based on the module config. + * + * @access public + * + * @param array $config Full sync configuration for this sync module. + * @return string WHERE SQL clause, or `null` if no comments are specified in the module config. + */ + public function get_where_sql( $config ) { + if ( is_array( $config ) ) { + return 'comment_ID IN (' . implode( ',', array_map( 'intval', $config ) ) . ')'; + } + + return null; + } + + /** + * Retrieve the actions that will be sent for this module during a full sync. + * + * @access public + * + * @return array Full sync actions of this module. + */ + public function get_full_sync_actions() { + return array( 'jetpack_full_sync_comments' ); + } + + /** + * Count all the actions that are going to be sent. + * + * @access public + * + * @param array $action_names Names of all the actions that will be sent. + * @return int Number of actions. + */ + public function count_full_sync_actions( $action_names ) { + return $this->count_actions( $action_names, array( 'jetpack_full_sync_comments' ) ); + } + + /** + * Expand the comment status change before the data is serialized and sent to the server. + * + * @access public + * @todo This is not used currently - let's implement it. + * + * @param array $args The hook parameters. + * @return array The expanded hook parameters. + */ + public function expand_wp_comment_status_change( $args ) { + return array( $args[0], $this->filter_comment( $args[1] ) ); + } + + /** + * Expand the comment creation before the data is serialized and sent to the server. + * + * @access public + * + * @param array $args The hook parameters. + * @return array The expanded hook parameters. + */ + public function expand_wp_insert_comment( $args ) { + return array( $args[0], $this->filter_comment( $args[1] ) ); + } + + /** + * Filter a comment object to the fields we need. + * + * @access public + * + * @param \WP_Comment $comment The unfiltered comment object. + * @return \WP_Comment Filtered comment object. + */ + public function filter_comment( $comment ) { + /** + * Filters whether to prevent sending comment data to .com + * + * Passing true to the filter will prevent the comment data from being sent + * to the WordPress.com. + * Instead we pass data that will still enable us to do a checksum against the + * Jetpacks data but will prevent us from displaying the data on in the API as well as + * other services. + * + * @since 4.2.0 + * + * @param boolean false prevent post data from bing synced to WordPress.com + * @param mixed $comment WP_COMMENT object + */ + if ( apply_filters( 'jetpack_sync_prevent_sending_comment_data', false, $comment ) ) { + $blocked_comment = new \stdClass(); + $blocked_comment->comment_ID = $comment->comment_ID; + $blocked_comment->comment_date = $comment->comment_date; + $blocked_comment->comment_date_gmt = $comment->comment_date_gmt; + $blocked_comment->comment_approved = 'jetpack_sync_blocked'; + return $blocked_comment; + } + + return $comment; + } + + /** + * Whether a certain comment meta key is whitelisted for sync. + * + * @access public + * + * @param string $meta_key Comment meta key. + * @return boolean Whether the meta key is whitelisted. + */ + public function is_whitelisted_comment_meta( $meta_key ) { + return in_array( $meta_key, Settings::get_setting( 'comment_meta_whitelist' ), true ); + } + + /** + * Handler for filtering out non-whitelisted comment meta. + * + * @access public + * + * @param array $args Hook args. + * @return array|boolean False if not whitelisted, the original hook args otherwise. + */ + public function filter_meta( $args ) { + return ( $this->is_whitelisted_comment_meta( $args[2] ) ? $args : false ); + } + + /** + * Expand the comment IDs to comment objects and meta before being serialized and sent to the server. + * + * @access public + * + * @param array $args The hook parameters. + * @return array The expanded hook parameters. + */ + public function expand_comment_ids( $args ) { + list( $comment_ids, $previous_interval_end ) = $args; + $comments = get_comments( + array( + 'include_unapproved' => true, + 'comment__in' => $comment_ids, + 'orderby' => 'comment_ID', + 'order' => 'DESC', + ) + ); + + return array( + $comments, + $this->get_metadata( $comment_ids, 'comment', Settings::get_setting( 'comment_meta_whitelist' ) ), + $previous_interval_end, + ); + } +} |