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Push — update/whitelist-post-meta ( 5a35b4...5531f0 )
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Jetpack_Sync_Module_Meta::set_defaults()   A

Complexity

Conditions 1
Paths 1

Size

Total Lines 4
Code Lines 3

Duplication

Lines 0
Ratio 0 %

Importance

Changes 0
Metric Value
cc 1
eloc 3
nc 1
nop 0
dl 0
loc 4
rs 10
c 0
b 0
f 0
1
<?php
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class Jetpack_Sync_Module_Meta extends Jetpack_Sync_Module {
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	private $meta_types = array( 'post', 'comment' );
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	private $post_meta_whitelist = array();
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	public function name() {
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		return 'meta';
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	}
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	public function set_defaults() {
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		$this->post_meta_whitelist = Jetpack_Sync_Defaults::$default_whitelist_post_meta_keys;
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		$this->comment_meta_whitelist = Jetpack_Sync_Defaults::$default_whitelist_comment_meta_keys
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	}
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	/**
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	 * This implementation of get_objects_by_id() is a bit hacky since we're not passing in an array of meta IDs,
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	 * but instead an array of post or comment IDs for which to retrieve meta for. On top of that,
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	 * we also pass in an associative array where we expect there to be 'meta_key' and 'ids' keys present.
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	 *
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	 * This seemed to be required since if we have missing meta on WP.com and need to fetch it, we don't know what
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	 * the meta key is, but we do know that we have missing meta for a given post or comment.
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	 *
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	 * @param string $object_type The type of object for which we retrieve meta. Either 'post' or 'comment'
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	 * @param array $config Must include 'meta_key' and 'ids' keys
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	 *
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	 * @return array
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	 */
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	public function get_objects_by_id( $object_type, $config ) {
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		global $wpdb;
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		if ( ! in_array( $object_type, $this->meta_types ) ) {
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			return array();
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		}
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		if ( ! isset( $config['meta_key'] ) || ! isset( $config['ids'] ) || ! is_array( $config['ids'] ) ) {
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			return array();
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		}
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		$meta_key = $config['meta_key'];
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		$ids = $config['ids'];
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		if ( ! $this->is_meta_key_allowed( $meta_key ) ) {
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			return array();
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		}
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		if ( 'post' == $object_type ) {
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			$table = $wpdb->postmeta;
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			$object_id_column = 'post_id';
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		} else {
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			$table = $wpdb->commentmeta;
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			$object_id_column = 'comment_id';
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		}
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		// Sanitize so that the array only has integer values
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		$ids_string = implode( ', ', array_map( 'intval', $ids ) );
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		$metas = $wpdb->get_results(
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			$wpdb->prepare(
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				"SELECT * FROM {$table} WHERE {$object_id_column} IN ( {$ids_string} ) AND meta_key = %s",
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				$meta_key
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			)
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		);
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		$meta_objects = array();
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		foreach( (array) $metas as $meta_object ) {
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			$meta_object = (array) $meta_object;
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			$meta_objects[ $meta_object[ $object_id_column ] ] = array(
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				'meta_type' => $object_type,
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				'meta_id' => $meta_object['meta_id'],
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				'meta_key' => $meta_key,
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				'meta_value' => $meta_object['meta_value'],
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				'object_id' => $meta_object[ $object_id_column ],
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			);
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		}
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		return $meta_objects;
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	}
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	public function init_listeners( $callable ) {
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		foreach ( $this->meta_types as $meta_type ) {
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			add_action( "added_{$meta_type}_meta", $callable, 10, 4 );
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			add_action( "updated_{$meta_type}_meta", $callable, 10, 4 );
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			add_action( "deleted_{$meta_type}_meta", $callable, 10, 4 );
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			$whitelist_handler = array( $this, 'filter_meta_' . $meta_type );
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			add_filter( "jetpack_sync_before_enqueue_added_{$meta_type}_meta", $whitelist_handler );
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			add_filter( "jetpack_sync_before_enqueue_updated_{$meta_type}_meta", $whitelist_handler );
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			add_filter( "jetpack_sync_before_enqueue_deleted_{$meta_type}_meta", $whitelist_handler );
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		}
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	}
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	// POST Meta
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	function set_post_meta_whitelist( $post_meta ) {
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		$this->post_meta_whitelist = (array) $post_meta;
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	}
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	function get_post_meta_whitelist() {
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		return $this->post_meta_whitelist;
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	}
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	function is_whitelisted_post_meta( $meta_key ) {
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		return in_array( $meta_key, $this->post_meta_whitelist );
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	}
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	// Comment Meta
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	function set_comment_meta_whitelist( $comment_meta ) {
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		$this->comment_meta_whitelist = (array) $comment_meta;
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	}
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	function get_comment_meta_whitelist() {
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		return $this->comment_meta_whitelist;
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	}
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	function is_whitelisted_comment_meta( $meta_key ) {
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		return in_array( $meta_key, $this->comment_meta_whitelist );
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	}
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	function is_post_type_allowed( $post_id ) {
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		$post = get_post( $post_id );
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		return ! in_array( $post->post_type, Jetpack_Sync_Settings::get_setting( 'post_types_blacklist' ) );
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	}
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	function filter_meta_post( $args ) {
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		if ( ! $this->is_whitelisted_post_meta( $args[2] ) ) {
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			return false;
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		}
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		return ( $this->is_post_type_allowed( $args[1] ) ? $args : false );
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	}
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	function filter_meta_comment( $args ) {
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		return ( $this->is_whitelisted_comment_meta( $args[2] ) ? $args : false );
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	}
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}
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