| 1 |  |  | <?php | 
            
                                                                                                            
                            
            
                                    
            
            
                | 2 |  |  | /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 3 |  |  |  * Constants sync module. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 4 |  |  |  * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 5 |  |  |  * @package automattic/jetpack-sync | 
            
                                                                                                            
                            
            
                                    
            
            
                | 6 |  |  |  */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 7 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 8 |  |  | namespace Automattic\Jetpack\Sync\Modules; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 9 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 10 |  |  | use Automattic\Jetpack\Sync\Defaults; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 11 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 12 |  |  | /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 13 |  |  |  * Class to handle sync for constants. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 14 |  |  |  */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 15 |  |  | class Constants extends Module { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 16 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 17 |  |  | 	 * Name of the constants checksum option. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 18 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 19 |  |  | 	 * @var string | 
            
                                                                                                            
                            
            
                                    
            
            
                | 20 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 21 |  |  | 	const CONSTANTS_CHECKSUM_OPTION_NAME = 'jetpack_constants_sync_checksum'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 22 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 23 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 24 |  |  | 	 * Name of the transient for locking constants. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 25 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 26 |  |  | 	 * @var string | 
            
                                                                                                            
                            
            
                                    
            
            
                | 27 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 28 |  |  | 	const CONSTANTS_AWAIT_TRANSIENT_NAME = 'jetpack_sync_constants_await'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 29 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 30 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 31 |  |  | 	 * Sync module name. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 32 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 33 |  |  | 	 * @access public | 
            
                                                                                                            
                            
            
                                    
            
            
                | 34 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 35 |  |  | 	 * @return string | 
            
                                                                                                            
                            
            
                                    
            
            
                | 36 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 37 |  |  | 	public function name() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 38 |  |  | 		return 'constants'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 39 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 40 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 41 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 42 |  |  | 	 * Initialize constants action listeners. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 43 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 44 |  |  | 	 * @access public | 
            
                                                                                                            
                            
            
                                    
            
            
                | 45 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 46 |  |  | 	 * @param callable $callable Action handler callable. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 47 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 48 |  |  | 	public function init_listeners( $callable ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 49 |  |  | 		add_action( 'jetpack_sync_constant', $callable, 10, 2 ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 50 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 51 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 52 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 53 |  |  | 	 * Initialize constants action listeners for full sync. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 54 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 55 |  |  | 	 * @access public | 
            
                                                                                                            
                            
            
                                    
            
            
                | 56 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 57 |  |  | 	 * @param callable $callable Action handler callable. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 58 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 59 |  |  | 	public function init_full_sync_listeners( $callable ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 60 |  |  | 		add_action( 'jetpack_full_sync_constants', $callable ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 61 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 62 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 63 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 64 |  |  | 	 * Initialize the module in the sender. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 65 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 66 |  |  | 	 * @access public | 
            
                                                                                                            
                            
            
                                    
            
            
                | 67 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 68 |  |  | 	public function init_before_send() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 69 |  |  | 		add_action( 'jetpack_sync_before_send_queue_sync', array( $this, 'maybe_sync_constants' ) ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 70 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 71 |  |  | 		// Full sync. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 72 |  |  | 		add_filter( 'jetpack_sync_before_send_jetpack_full_sync_constants', array( $this, 'expand_constants' ) ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 73 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 74 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 75 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 76 |  |  | 	 * Perform module cleanup. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 77 |  |  | 	 * Deletes any transients and options that this module uses. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 78 |  |  | 	 * Usually triggered when uninstalling the plugin. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 79 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 80 |  |  | 	 * @access public | 
            
                                                                                                            
                            
            
                                    
            
            
                | 81 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 82 |  |  | 	public function reset_data() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 83 |  |  | 		delete_option( self::CONSTANTS_CHECKSUM_OPTION_NAME ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 84 |  |  | 		delete_transient( self::CONSTANTS_AWAIT_TRANSIENT_NAME ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 85 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 86 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 87 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 88 |  |  | 	 * Set the constants whitelist. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 89 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 90 |  |  | 	 * @access public | 
            
                                                                                                            
                            
            
                                    
            
            
                | 91 |  |  | 	 * @todo We don't seem to use this one. Should we remove it? | 
            
                                                                                                            
                            
            
                                    
            
            
                | 92 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 93 |  |  | 	 * @param array $constants The new constants whitelist. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 94 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 95 |  |  | 	public function set_constants_whitelist( $constants ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 96 |  |  | 		$this->constants_whitelist = $constants; | 
                            
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                | 97 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 98 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 99 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 100 |  |  | 	 * Get the constants whitelist. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 101 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 102 |  |  | 	 * @access public | 
            
                                                                                                            
                            
            
                                    
            
            
                | 103 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 104 |  |  | 	 * @return array The constants whitelist. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 105 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 106 |  |  | 	public function get_constants_whitelist() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 107 |  |  | 		return Defaults::get_constants_whitelist(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 108 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 109 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 110 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 111 |  |  | 	 * Enqueue the constants actions for full sync. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 112 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 113 |  |  | 	 * @access public | 
            
                                                                                                            
                            
            
                                    
            
            
                | 114 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 115 |  |  | 	 * @param array   $config Full sync configuration for this sync module. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 116 |  |  | 	 * @param int     $max_items_to_enqueue Maximum number of items to enqueue. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 117 |  |  | 	 * @param boolean $state True if full sync has finished enqueueing this module, false otherwise. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 118 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 119 |  |  | 	 * @return array Number of actions enqueued, and next module state. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 120 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 121 |  |  | 	public function enqueue_full_sync_actions( $config, $max_items_to_enqueue, $state ) { // phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable | 
            
                                                                                                            
                            
            
                                    
            
            
                | 122 |  |  | 		/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 123 |  |  | 		 * Tells the client to sync all constants to the server | 
            
                                                                                                            
                            
            
                                    
            
            
                | 124 |  |  | 		 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 125 |  |  | 		 * @param boolean Whether to expand constants (should always be true) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 126 |  |  | 		 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 127 |  |  | 		 * @since 4.2.0 | 
            
                                                                                                            
                            
            
                                    
            
            
                | 128 |  |  | 		 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 129 |  |  | 		do_action( 'jetpack_full_sync_constants', true ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 130 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 131 |  |  | 		// The number of actions enqueued, and next module state (true == done). | 
            
                                                                                                            
                            
            
                                    
            
            
                | 132 |  |  | 		return array( 1, true ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 133 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 134 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 135 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 136 |  |  | 	 * Send the constants actions for full sync. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 137 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 138 |  |  | 	 * @access public | 
            
                                                                                                            
                            
            
                                    
            
            
                | 139 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 140 |  |  | 	 * @param array $config Full sync configuration for this sync module. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 141 |  |  | 	 * @param int   $send_until The timestamp until the current request can send. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 142 |  |  | 	 * @param array $state This module Full Sync status. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 143 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 144 |  |  | 	 * @return array This module Full Sync status. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 145 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 146 |  |  | 	public function send_full_sync_actions( $config, $send_until, $state ) { // phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable | 
            
                                                                                                            
                            
            
                                    
            
            
                | 147 |  |  | 		// we call this instead of do_action when sending immediately. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 148 |  |  | 		$this->send_action( 'jetpack_full_sync_constants', array( true ) ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 149 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 150 |  |  | 		// The number of actions enqueued, and next module state (true == done). | 
            
                                                                                                            
                            
            
                                    
            
            
                | 151 |  |  | 		return array( 'finished' => true ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 152 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 153 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 154 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 155 |  |  | 	 * Retrieve an estimated number of actions that will be enqueued. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 156 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 157 |  |  | 	 * @access public | 
            
                                                                                                            
                            
            
                                    
            
            
                | 158 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 159 |  |  | 	 * @param array $config Full sync configuration for this sync module. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 160 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 161 |  |  | 	 * @return array Number of items yet to be enqueued. | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 162 |  |  | 	 */ | 
            
                                                                        
                            
            
                                    
            
            
                | 163 |  |  | 	public function estimate_full_sync_actions( $config ) { // phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable | 
            
                                                                        
                            
            
                                    
            
            
                | 164 |  |  | 		return 1; | 
            
                                                                        
                            
            
                                    
            
            
                | 165 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 166 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 167 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 168 |  |  | 	 * Retrieve the actions that will be sent for this module during a full sync. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 169 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 170 |  |  | 	 * @access public | 
            
                                                                                                            
                            
            
                                    
            
            
                | 171 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 172 |  |  | 	 * @return array Full sync actions of this module. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 173 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 174 |  |  | 	public function get_full_sync_actions() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 175 |  |  | 		return array( 'jetpack_full_sync_constants' ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 176 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 177 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 178 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 179 |  |  | 	 * Sync the constants if we're supposed to. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 180 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 181 |  |  | 	 * @access public | 
            
                                                                                                            
                            
            
                                    
            
            
                | 182 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 183 |  |  | 	public function maybe_sync_constants() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 184 |  |  | 		if ( get_transient( self::CONSTANTS_AWAIT_TRANSIENT_NAME ) ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 185 |  |  | 			return; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 186 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 187 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 188 |  |  | 		set_transient( self::CONSTANTS_AWAIT_TRANSIENT_NAME, microtime( true ), Defaults::$default_sync_constants_wait_time ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 189 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 190 |  |  | 		$constants = $this->get_all_constants(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 191 |  |  | 		if ( empty( $constants ) ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 192 |  |  | 			return; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 193 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 194 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 195 |  |  | 		$constants_checksums = (array) get_option( self::CONSTANTS_CHECKSUM_OPTION_NAME, array() ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 196 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 197 |  |  | 		foreach ( $constants as $name => $value ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 198 |  |  | 			$checksum = $this->get_check_sum( $value ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 199 |  |  | 			// Explicitly not using Identical comparison as get_option returns a string. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 200 |  |  | 			if ( ! $this->still_valid_checksum( $constants_checksums, $name, $checksum ) && ! is_null( $value ) ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 201 |  |  | 				/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 202 |  |  | 				 * Tells the client to sync a constant to the server | 
            
                                                                                                            
                            
            
                                    
            
            
                | 203 |  |  | 				 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 204 |  |  | 				 * @param string The name of the constant | 
            
                                                                                                            
                            
            
                                    
            
            
                | 205 |  |  | 				 * @param mixed The value of the constant | 
            
                                                                                                            
                            
            
                                    
            
            
                | 206 |  |  | 				 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 207 |  |  | 				 * @since 4.2.0 | 
            
                                                                                                            
                            
            
                                    
            
            
                | 208 |  |  | 				 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 209 |  |  | 				do_action( 'jetpack_sync_constant', $name, $value ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 210 |  |  | 				$constants_checksums[ $name ] = $checksum; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 211 |  |  | 			} else { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 212 |  |  | 				$constants_checksums[ $name ] = $checksum; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 213 |  |  | 			} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 214 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 215 |  |  | 		update_option( self::CONSTANTS_CHECKSUM_OPTION_NAME, $constants_checksums ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 216 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 217 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 218 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 219 |  |  | 	 * Retrieve all constants as per the current constants whitelist. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 220 |  |  | 	 * Public so that we don't have to store an option for each constant. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 221 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 222 |  |  | 	 * @access public | 
            
                                                                                                            
                            
            
                                    
            
            
                | 223 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 224 |  |  | 	 * @return array All constants. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 225 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 226 |  |  | 	public function get_all_constants() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 227 |  |  | 		$constants_whitelist = $this->get_constants_whitelist(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 228 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 229 |  |  | 		return array_combine( | 
            
                                                                                                            
                            
            
                                    
            
            
                | 230 |  |  | 			$constants_whitelist, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 231 |  |  | 			array_map( array( $this, 'get_constant' ), $constants_whitelist ) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 232 |  |  | 		); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 233 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 234 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 235 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 236 |  |  | 	 * Retrieve the value of a constant. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 237 |  |  | 	 * Used as a wrapper to standartize access to constants. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 238 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 239 |  |  | 	 * @access private | 
            
                                                                                                            
                            
            
                                    
            
            
                | 240 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 241 |  |  | 	 * @param string $constant Constant name. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 242 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 243 |  |  | 	 * @return mixed Return value of the constant. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 244 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 245 |  |  | 	private function get_constant( $constant ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 246 |  |  | 		return ( defined( $constant ) ) ? | 
            
                                                                                                            
                            
            
                                    
            
            
                | 247 |  |  | 			constant( $constant ) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 248 |  |  | 			: null; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 249 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 250 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 251 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 252 |  |  | 	 * Expand the constants within a hook before they are serialized and sent to the server. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 253 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 254 |  |  | 	 * @access public | 
            
                                                                                                            
                            
            
                                    
            
            
                | 255 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 256 |  |  | 	 * @param array $args The hook parameters. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 257 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 258 |  |  | 	 * @return array $args The hook parameters. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 259 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 260 |  |  | 	public function expand_constants( $args ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 261 |  |  | 		if ( $args[0] ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 262 |  |  | 			$constants           = $this->get_all_constants(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 263 |  |  | 			$constants_checksums = array(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 264 |  |  | 			foreach ( $constants as $name => $value ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 265 |  |  | 				$constants_checksums[ $name ] = $this->get_check_sum( $value ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 266 |  |  | 			} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 267 |  |  | 			update_option( self::CONSTANTS_CHECKSUM_OPTION_NAME, $constants_checksums ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 268 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 269 |  |  | 			return $constants; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 270 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 271 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 272 |  |  | 		return $args; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 273 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 274 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 275 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 276 |  |  | 	 * Return Total number of objects. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 277 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 278 |  |  | 	 * @param array $config Full Sync config. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 279 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 280 |  |  | 	 * @return int total | 
            
                                                                                                            
                            
            
                                    
            
            
                | 281 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 282 |  |  | 	public function total( $config ) { // phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable | 
            
                                                                                                            
                            
            
                                    
            
            
                | 283 |  |  | 		return count( $this->get_constants_whitelist() ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 284 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 285 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 286 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 287 |  |  | 	 * Retrieve a set of constants by their IDs. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 288 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 289 |  |  | 	 * @access public | 
            
                                                                                                            
                            
            
                                    
            
            
                | 290 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 291 |  |  | 	 * @param string $object_type Object type. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 292 |  |  | 	 * @param array  $ids         Object IDs. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 293 |  |  | 	 * @return array Array of objects. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 294 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                                                    
                                                                                                        
            
            
                | 295 |  | View Code Duplication | 	public function get_objects_by_id( $object_type, $ids ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 296 |  |  | 		if ( empty( $ids ) || empty( $object_type ) || 'constant' !== $object_type ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 297 |  |  | 			return array(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 298 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 299 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 300 |  |  | 		$objects = array(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 301 |  |  | 		foreach ( (array) $ids as $id ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 302 |  |  | 			$object = $this->get_object_by_id( $object_type, $id ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 303 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 304 |  |  | 			if ( 'all' === $id ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 305 |  |  | 				// If all was requested it contains all options and can simply be returned. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 306 |  |  | 				return $object; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 307 |  |  | 			} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 308 |  |  | 			$objects[ $id ] = $object; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 309 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 310 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 311 |  |  | 		return $objects; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 312 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 313 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 314 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 315 |  |  | 	 * Retrieve a constant by its name. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 316 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 317 |  |  | 	 * @access public | 
            
                                                                                                            
                            
            
                                    
            
            
                | 318 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 319 |  |  | 	 * @param string $object_type Type of the sync object. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 320 |  |  | 	 * @param string $id          ID of the sync object. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 321 |  |  | 	 * @return mixed              Value of Constant. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 322 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 323 |  |  | 	public function get_object_by_id( $object_type, $id ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 324 |  |  | 		if ( 'constant' === $object_type ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 325 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 326 |  |  | 			// Only whitelisted constants can be returned. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 327 |  |  | 			if ( in_array( $id, $this->get_constants_whitelist(), true ) ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 328 |  |  | 				return $this->get_constant( $id ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 329 |  |  | 			} elseif ( 'all' === $id ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 330 |  |  | 				return $this->get_all_constants(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 331 |  |  | 			} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 332 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 333 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 334 |  |  | 		return false; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 335 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 336 |  |  |  | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 337 |  |  | } | 
            
                                                        
            
                                    
            
            
                | 338 |  |  |  | 
            
                        
In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code:
Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion: