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    wp-async-request.phpnu W+A��        <?php
/**
 * WP Async Request
 *
 * @package WP-Background-Processing
 */

defined( 'ABSPATH' ) || exit;

/**
 * Abstract WP_Async_Request class.
 */
abstract class WP_Async_Request {

	/**
	 * Prefix
	 *
	 * (default value: 'wp')
	 *
	 * @var string
	 * @access protected
	 */
	protected $prefix = 'wp';

	/**
	 * Action
	 *
	 * (default value: 'async_request')
	 *
	 * @var string
	 * @access protected
	 */
	protected $action = 'async_request';

	/**
	 * Identifier
	 *
	 * @var mixed
	 * @access protected
	 */
	protected $identifier;

	/**
	 * Data
	 *
	 * (default value: array())
	 *
	 * @var array
	 * @access protected
	 */
	protected $data = array();

	/**
	 * Initiate new async request
	 */
	public function __construct() {
		$this->identifier = $this->prefix . '_' . $this->action;

		add_action( 'wp_ajax_' . $this->identifier, array( $this, 'maybe_handle' ) );
		add_action( 'wp_ajax_nopriv_' . $this->identifier, array( $this, 'maybe_handle' ) );
	}

	/**
	 * Set data used during the request
	 *
	 * @param array $data Data.
	 *
	 * @return $this
	 */
	public function data( $data ) {
		$this->data = $data;

		return $this;
	}

	/**
	 * Dispatch the async request
	 *
	 * @return array|WP_Error
	 */
	public function dispatch() {
		$url  = add_query_arg( $this->get_query_args(), $this->get_query_url() );
		$args = $this->get_post_args();

		return wp_remote_post( esc_url_raw( $url ), $args );
	}

	/**
	 * Get query args
	 *
	 * @return array
	 */
	protected function get_query_args() {
		if ( property_exists( $this, 'query_args' ) ) {
			return $this->query_args;
		}

		return array(
			'action' => $this->identifier,
			'nonce'  => wp_create_nonce( $this->identifier ),
		);
	}

	/**
	 * Get query URL
	 *
	 * @return string
	 */
	protected function get_query_url() {
		if ( property_exists( $this, 'query_url' ) ) {
			return $this->query_url;
		}

		return admin_url( 'admin-ajax.php' );
	}

	/**
	 * Get post args
	 *
	 * @return array
	 */
	protected function get_post_args() {
		if ( property_exists( $this, 'post_args' ) ) {
			return $this->post_args;
		}

		return array(
			'timeout'   => 0.01,
			'blocking'  => false,
			'body'      => $this->data,
			'cookies'   => $_COOKIE,
			'sslverify' => apply_filters( 'https_local_ssl_verify', false ),
		);
	}

	/**
	 * Maybe handle
	 *
	 * Check for correct nonce and pass to handler.
	 */
	public function maybe_handle() {
		// Don't lock up other requests while processing
		session_write_close();

		check_ajax_referer( $this->identifier, 'nonce' );

		$this->handle();

		wp_die();
	}

	/**
	 * Handle
	 *
	 * Override this method to perform any actions required
	 * during the async request.
	 */
	abstract protected function handle();

}
PK      �\�d|b�(  �(    wp-background-process.phpnu W+A��        <?php // @codingStandardsIgnoreLine.
/**
 * Abstract WP_Background_Process class.
 *
 * @package WP-Background-Processing
 * @extends WP_Async_Request
 */

defined( 'ABSPATH' ) || exit;

/**
 * Abstract WP_Background_Process class.
 */
abstract class WP_Background_Process extends WP_Async_Request {

	/**
	 * Action
	 *
	 * (default value: 'background_process')
	 *
	 * @var string
	 * @access protected
	 */
	protected $action = 'background_process';

	/**
	 * Start time of current process.
	 *
	 * (default value: 0)
	 *
	 * @var int
	 * @access protected
	 */
	protected $start_time = 0;

	/**
	 * Cron_hook_identifier
	 *
	 * @var mixed
	 * @access protected
	 */
	protected $cron_hook_identifier;

	/**
	 * Cron_interval_identifier
	 *
	 * @var mixed
	 * @access protected
	 */
	protected $cron_interval_identifier;

	/**
	 * Initiate new background process
	 */
	public function __construct() {
		parent::__construct();

		$this->cron_hook_identifier     = $this->identifier . '_cron';
		$this->cron_interval_identifier = $this->identifier . '_cron_interval';

		add_action( $this->cron_hook_identifier, array( $this, 'handle_cron_healthcheck' ) );
		add_filter( 'cron_schedules', array( $this, 'schedule_cron_healthcheck' ) );
	}

	/**
	 * Dispatch
	 *
	 * @access public
	 * @return void
	 */
	public function dispatch() {
		// Schedule the cron healthcheck.
		$this->schedule_event();

		// Perform remote post.
		return parent::dispatch();
	}

	/**
	 * Push to queue
	 *
	 * @param mixed $data Data.
	 *
	 * @return $this
	 */
	public function push_to_queue( $data ) {
		$this->data[] = $data;

		return $this;
	}

	/**
	 * Save queue
	 *
	 * @return $this
	 */
	public function save() {
		$key = $this->generate_key();

		if ( ! empty( $this->data ) ) {
			update_site_option( $key, $this->data );
		}

		return $this;
	}

	/**
	 * Update queue
	 *
	 * @param string $key Key.
	 * @param array  $data Data.
	 *
	 * @return $this
	 */
	public function update( $key, $data ) {
		if ( ! empty( $data ) ) {
			update_site_option( $key, $data );
		}

		return $this;
	}

	/**
	 * Delete queue
	 *
	 * @param string $key Key.
	 *
	 * @return $this
	 */
	public function delete( $key ) {
		delete_site_option( $key );

		return $this;
	}

	/**
	 * Generate key
	 *
	 * Generates a unique key based on microtime. Queue items are
	 * given a unique key so that they can be merged upon save.
	 *
	 * @param int $length Length.
	 *
	 * @return string
	 */
	protected function generate_key( $length = 64 ) {
		$unique  = md5( microtime() . rand() );
		$prepend = $this->identifier . '_batch_';

		return substr( $prepend . $unique, 0, $length );
	}

	/**
	 * Maybe process queue
	 *
	 * Checks whether data exists within the queue and that
	 * the process is not already running.
	 */
	public function maybe_handle() {
		// Don't lock up other requests while processing
		session_write_close();

		if ( $this->is_process_running() ) {
			// Background process already running.
			wp_die();
		}

		if ( $this->is_queue_empty() ) {
			// No data to process.
			wp_die();
		}

		check_ajax_referer( $this->identifier, 'nonce' );

		$this->handle();

		wp_die();
	}

	/**
	 * Is queue empty
	 *
	 * @return bool
	 */
	protected function is_queue_empty() {
		global $wpdb;

		$table  = $wpdb->options;
		$column = 'option_name';

		if ( is_multisite() ) {
			$table  = $wpdb->sitemeta;
			$column = 'meta_key';
		}

		$key = $this->identifier . '_batch_%';

		$count = $wpdb->get_var( $wpdb->prepare( "
			SELECT COUNT(*)
			FROM {$table}
			WHERE {$column} LIKE %s
		", $key ) );

		return ! ( $count > 0 );
	}

	/**
	 * Is process running
	 *
	 * Check whether the current process is already running
	 * in a background process.
	 */
	protected function is_process_running() {
		if ( get_site_transient( $this->identifier . '_process_lock' ) ) {
			// Process already running.
			return true;
		}

		return false;
	}

	/**
	 * Lock process
	 *
	 * Lock the process so that multiple instances can't run simultaneously.
	 * Override if applicable, but the duration should be greater than that
	 * defined in the time_exceeded() method.
	 */
	protected function lock_process() {
		$this->start_time = time(); // Set start time of current process.

		$lock_duration = ( property_exists( $this, 'queue_lock_time' ) ) ? $this->queue_lock_time : 60; // 1 minute
		$lock_duration = apply_filters( $this->identifier . '_queue_lock_time', $lock_duration );

		set_site_transient( $this->identifier . '_process_lock', microtime(), $lock_duration );
	}

	/**
	 * Unlock process
	 *
	 * Unlock the process so that other instances can spawn.
	 *
	 * @return $this
	 */
	protected function unlock_process() {
		delete_site_transient( $this->identifier . '_process_lock' );

		return $this;
	}

	/**
	 * Get batch
	 *
	 * @return stdClass Return the first batch from the queue
	 */
	protected function get_batch() {
		global $wpdb;

		$table        = $wpdb->options;
		$column       = 'option_name';
		$key_column   = 'option_id';
		$value_column = 'option_value';

		if ( is_multisite() ) {
			$table        = $wpdb->sitemeta;
			$column       = 'meta_key';
			$key_column   = 'meta_id';
			$value_column = 'meta_value';
		}

		$key = $this->identifier . '_batch_%';

		$query = $wpdb->get_row( $wpdb->prepare( "
			SELECT *
			FROM {$table}
			WHERE {$column} LIKE %s
			ORDER BY {$key_column} ASC
			LIMIT 1
		", $key ) );

		$batch       = new stdClass();
		$batch->key  = $query->$column;
		$batch->data = maybe_unserialize( $query->$value_column );

		return $batch;
	}

	/**
	 * Handle
	 *
	 * Pass each queue item to the task handler, while remaining
	 * within server memory and time limit constraints.
	 */
	protected function handle() {
		$this->lock_process();

		do {
			$batch = $this->get_batch();

			foreach ( $batch->data as $key => $value ) {
				$task = $this->task( $value );

				if ( false !== $task ) {
					$batch->data[ $key ] = $task;
				} else {
					unset( $batch->data[ $key ] );
				}

				if ( $this->time_exceeded() || $this->memory_exceeded() ) {
					// Batch limits reached.
					break;
				}
			}

			// Update or delete current batch.
			if ( ! empty( $batch->data ) ) {
				$this->update( $batch->key, $batch->data );
			} else {
				$this->delete( $batch->key );
			}
		} while ( ! $this->time_exceeded() && ! $this->memory_exceeded() && ! $this->is_queue_empty() );

		$this->unlock_process();

		// Start next batch or complete process.
		if ( ! $this->is_queue_empty() ) {
			$this->dispatch();
		} else {
			$this->complete();
		}

		wp_die();
	}

	/**
	 * Memory exceeded
	 *
	 * Ensures the batch process never exceeds 90%
	 * of the maximum WordPress memory.
	 *
	 * @return bool
	 */
	protected function memory_exceeded() {
		$memory_limit   = $this->get_memory_limit() * 0.9; // 90% of max memory
		$current_memory = memory_get_usage( true );
		$return         = false;

		if ( $current_memory >= $memory_limit ) {
			$return = true;
		}

		return apply_filters( $this->identifier . '_memory_exceeded', $return );
	}

	/**
	 * Get memory limit
	 *
	 * @return int
	 */
	protected function get_memory_limit() {
		if ( function_exists( 'ini_get' ) ) {
			$memory_limit = ini_get( 'memory_limit' );
		} else {
			// Sensible default.
			$memory_limit = '128M';
		}

		if ( ! $memory_limit || -1 === $memory_limit ) {
			// Unlimited, set to 32GB.
			$memory_limit = '32000M';
		}

		return intval( $memory_limit ) * 1024 * 1024;
	}

	/**
	 * Time exceeded.
	 *
	 * Ensures the batch never exceeds a sensible time limit.
	 * A timeout limit of 30s is common on shared hosting.
	 *
	 * @return bool
	 */
	protected function time_exceeded() {
		$finish = $this->start_time + apply_filters( $this->identifier . '_default_time_limit', 20 ); // 20 seconds
		$return = false;

		if ( time() >= $finish ) {
			$return = true;
		}

		return apply_filters( $this->identifier . '_time_exceeded', $return );
	}

	/**
	 * Complete.
	 *
	 * Override if applicable, but ensure that the below actions are
	 * performed, or, call parent::complete().
	 */
	protected function complete() {
		// Unschedule the cron healthcheck.
		$this->clear_scheduled_event();
	}

	/**
	 * Schedule cron healthcheck
	 *
	 * @access public
	 * @param mixed $schedules Schedules.
	 * @return mixed
	 */
	public function schedule_cron_healthcheck( $schedules ) {
		$interval = apply_filters( $this->identifier . '_cron_interval', 5 );

		if ( property_exists( $this, 'cron_interval' ) ) {
			$interval = apply_filters( $this->identifier . '_cron_interval', $this->cron_interval );
		}

		// Adds every 5 minutes to the existing schedules.
		$schedules[ $this->identifier . '_cron_interval' ] = array(
			'interval' => MINUTE_IN_SECONDS * $interval,
			'display'  => sprintf( __( 'Every %d minutes', 'woocommerce' ), $interval ),
		);

		return $schedules;
	}

	/**
	 * Handle cron healthcheck
	 *
	 * Restart the background process if not already running
	 * and data exists in the queue.
	 */
	public function handle_cron_healthcheck() {
		if ( $this->is_process_running() ) {
			// Background process already running.
			exit;
		}

		if ( $this->is_queue_empty() ) {
			// No data to process.
			$this->clear_scheduled_event();
			exit;
		}

		$this->handle();

		exit;
	}

	/**
	 * Schedule event
	 */
	protected function schedule_event() {
		if ( ! wp_next_scheduled( $this->cron_hook_identifier ) ) {
			wp_schedule_event( time(), $this->cron_interval_identifier, $this->cron_hook_identifier );
		}
	}

	/**
	 * Clear scheduled event
	 */
	protected function clear_scheduled_event() {
		$timestamp = wp_next_scheduled( $this->cron_hook_identifier );

		if ( $timestamp ) {
			wp_unschedule_event( $timestamp, $this->cron_hook_identifier );
		}
	}

	/**
	 * Cancel Process
	 *
	 * Stop processing queue items, clear cronjob and delete batch.
	 *
	 */
	public function cancel_process() {
		if ( ! $this->is_queue_empty() ) {
			$batch = $this->get_batch();

			$this->delete( $batch->key );

			wp_clear_scheduled_hook( $this->cron_hook_identifier );
		}

	}

	/**
	 * Task
	 *
	 * Override this method to perform any actions required on each
	 * queue item. Return the modified item for further processing
	 * in the next pass through. Or, return false to remove the
	 * item from the queue.
	 *
	 * @param mixed $item Queue item to iterate over.
	 *
	 * @return mixed
	 */
	abstract protected function task( $item );

}
PK      �\0�`W�4  �4    class-wc-eval-math.phpnu W+A��        <?php

use Automattic\Jetpack\Constants;

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

if ( ! class_exists( 'WC_Eval_Math', false ) ) {
	/**
	 * Class WC_Eval_Math. Supports basic math only (removed eval function).
	 *
	 * Based on EvalMath by Miles Kaufman Copyright (C) 2005 Miles Kaufmann http://www.twmagic.com/.
	 */
	class WC_Eval_Math {

		/**
		 * Last error.
		 *
		 * @var string
		 */
		public static $last_error = null;

		/**
		 * Variables (and constants).
		 *
		 * @var array
		 */
		public static $v = array( 'e' => 2.71, 'pi' => 3.14 );

		/**
		 * User-defined functions.
		 *
		 * @var array
		 */
		public static $f = array();

		/**
		 * Constants.
		 *
		 * @var array
		 */
		public static $vb = array( 'e', 'pi' );

		/**
		 * Built-in functions.
		 *
		 * @var array
		 */
		public static $fb = array();

		/**
		 * Evaluate maths string.
		 *
		 * @param string  $expr
		 * @return mixed
		 */
		public static function evaluate( $expr ) {
			self::$last_error = null;
			$expr = trim( $expr );
			if ( substr( $expr, -1, 1 ) == ';' ) {
				$expr = substr( $expr, 0, strlen( $expr ) -1 ); // strip semicolons at the end
			}
			// ===============
			// is it a variable assignment?
			if ( preg_match( '/^\s*([a-z]\w*)\s*=\s*(.+)$/', $expr, $matches ) ) {
				if ( in_array( $matches[1], self::$vb ) ) { // make sure we're not assigning to a constant
					return self::trigger( "cannot assign to constant '$matches[1]'" );
				}
				if ( ( $tmp = self::pfx( self::nfx( $matches[2] ) ) ) === false ) {
					return false; // get the result and make sure it's good
				}
				self::$v[ $matches[1] ] = $tmp; // if so, stick it in the variable array
				return self::$v[ $matches[1] ]; // and return the resulting value
				// ===============
				// is it a function assignment?
			} elseif ( preg_match( '/^\s*([a-z]\w*)\s*\(\s*([a-z]\w*(?:\s*,\s*[a-z]\w*)*)\s*\)\s*=\s*(.+)$/', $expr, $matches ) ) {
				$fnn = $matches[1]; // get the function name
				if ( in_array( $matches[1], self::$fb ) ) { // make sure it isn't built in
					return self::trigger( "cannot redefine built-in function '$matches[1]()'" );
				}
				$args = explode( ",", preg_replace( "/\s+/", "", $matches[2] ) ); // get the arguments
				if ( ( $stack = self::nfx( $matches[3] ) ) === false ) {
					return false; // see if it can be converted to postfix
				}
				$stack_size = count( $stack );
				for ( $i = 0; $i < $stack_size; $i++ ) { // freeze the state of the non-argument variables
					$token = $stack[ $i ];
					if ( preg_match( '/^[a-z]\w*$/', $token ) and ! in_array( $token, $args ) ) {
						if ( array_key_exists( $token, self::$v ) ) {
							$stack[ $i ] = self::$v[ $token ];
						} else {
							return self::trigger( "undefined variable '$token' in function definition" );
						}
					}
				}
				self::$f[ $fnn ] = array( 'args' => $args, 'func' => $stack );
				return true;
				// ===============
			} else {
				return self::pfx( self::nfx( $expr ) ); // straight up evaluation, woo
			}
		}

		/**
		 * Convert infix to postfix notation.
		 *
		 * @param  string $expr
		 *
		 * @return array|string
		 */
		private static function nfx( $expr ) {

			$index = 0;
			$stack = new WC_Eval_Math_Stack;
			$output = array(); // postfix form of expression, to be passed to pfx()
			$expr = trim( $expr );

			$ops   = array( '+', '-', '*', '/', '^', '_' );
			$ops_r = array( '+' => 0, '-' => 0, '*' => 0, '/' => 0, '^' => 1 ); // right-associative operator?
			$ops_p = array( '+' => 0, '-' => 0, '*' => 1, '/' => 1, '_' => 1, '^' => 2 ); // operator precedence

			$expecting_op = false; // we use this in syntax-checking the expression
			// and determining when a - is a negation
			if ( preg_match( "/[^\w\s+*^\/()\.,-]/", $expr, $matches ) ) { // make sure the characters are all good
				return self::trigger( "illegal character '{$matches[0]}'" );
			}

			while ( 1 ) { // 1 Infinite Loop ;)
				$op = substr( $expr, $index, 1 ); // get the first character at the current index
				// find out if we're currently at the beginning of a number/variable/function/parenthesis/operand
				$ex = preg_match( '/^([A-Za-z]\w*\(?|\d+(?:\.\d*)?|\.\d+|\()/', substr( $expr, $index ), $match );
				// ===============
				if ( '-' === $op and ! $expecting_op ) { // is it a negation instead of a minus?
					$stack->push( '_' ); // put a negation on the stack
					$index++;
				} elseif ( '_' === $op ) { // we have to explicitly deny this, because it's legal on the stack
					return self::trigger( "illegal character '_'" ); // but not in the input expression
					// ===============
				} elseif ( ( in_array( $op, $ops ) or $ex ) and $expecting_op ) { // are we putting an operator on the stack?
					if ( $ex ) { // are we expecting an operator but have a number/variable/function/opening parenthesis?
						$op = '*';
						$index--; // it's an implicit multiplication
					}
					// heart of the algorithm:
					while ( $stack->count > 0 and ( $o2 = $stack->last() ) and in_array( $o2, $ops ) and ( $ops_r[ $op ] ? $ops_p[ $op ] < $ops_p[ $o2 ] : $ops_p[ $op ] <= $ops_p[ $o2 ] ) ) {
						$output[] = $stack->pop(); // pop stuff off the stack into the output
					}
					// many thanks: https://en.wikipedia.org/wiki/Reverse_Polish_notation#The_algorithm_in_detail
					$stack->push( $op ); // finally put OUR operator onto the stack
					$index++;
					$expecting_op = false;
					// ===============
				} elseif ( ')' === $op && $expecting_op ) { // ready to close a parenthesis?
					while ( ( $o2 = $stack->pop() ) != '(' ) { // pop off the stack back to the last (
						if ( is_null( $o2 ) ) {
							return self::trigger( "unexpected ')'" );
						} else {
							$output[] = $o2;
						}
					}
					if ( preg_match( "/^([A-Za-z]\w*)\($/", $stack->last( 2 ), $matches ) ) { // did we just close a function?
						$fnn = $matches[1]; // get the function name
						$arg_count = $stack->pop(); // see how many arguments there were (cleverly stored on the stack, thank you)
						$output[] = $stack->pop(); // pop the function and push onto the output
						if ( in_array( $fnn, self::$fb ) ) { // check the argument count
							if ( $arg_count > 1 ) {
								return self::trigger( "too many arguments ($arg_count given, 1 expected)" );
							}
						} elseif ( array_key_exists( $fnn, self::$f ) ) {
							if ( count( self::$f[ $fnn ]['args'] ) != $arg_count ) {
								return self::trigger( "wrong number of arguments ($arg_count given, " . count( self::$f[ $fnn ]['args'] ) . " expected)" );
							}
						} else { // did we somehow push a non-function on the stack? this should never happen
							return self::trigger( "internal error" );
						}
					}
					$index++;
					// ===============
				} elseif ( ',' === $op and $expecting_op ) { // did we just finish a function argument?
					while ( ( $o2 = $stack->pop() ) != '(' ) {
						if ( is_null( $o2 ) ) {
							return self::trigger( "unexpected ','" ); // oops, never had a (
						} else {
							$output[] = $o2; // pop the argument expression stuff and push onto the output
						}
					}
					// make sure there was a function
					if ( ! preg_match( "/^([A-Za-z]\w*)\($/", $stack->last( 2 ), $matches ) ) {
						return self::trigger( "unexpected ','" );
					}
					$stack->push( $stack->pop() + 1 ); // increment the argument count
					$stack->push( '(' ); // put the ( back on, we'll need to pop back to it again
					$index++;
					$expecting_op = false;
					// ===============
				} elseif ( '(' === $op and ! $expecting_op ) {
					$stack->push( '(' ); // that was easy
					$index++;
					// ===============
				} elseif ( $ex and ! $expecting_op ) { // do we now have a function/variable/number?
					$expecting_op = true;
					$val = $match[1];
					if ( preg_match( "/^([A-Za-z]\w*)\($/", $val, $matches ) ) { // may be func, or variable w/ implicit multiplication against parentheses...
						if ( in_array( $matches[1], self::$fb ) or array_key_exists( $matches[1], self::$f ) ) { // it's a func
							$stack->push( $val );
							$stack->push( 1 );
							$stack->push( '(' );
							$expecting_op = false;
						} else { // it's a var w/ implicit multiplication
							$val = $matches[1];
							$output[] = $val;
						}
					} else { // it's a plain old var or num
						$output[] = $val;
					}
					$index += strlen( $val );
					// ===============
				} elseif ( ')' === $op ) { // miscellaneous error checking
					return self::trigger( "unexpected ')'" );
				} elseif ( in_array( $op, $ops ) and ! $expecting_op ) {
					return self::trigger( "unexpected operator '$op'" );
				} else { // I don't even want to know what you did to get here
					return self::trigger( "an unexpected error occurred" );
				}
				if ( strlen( $expr ) == $index ) {
					if ( in_array( $op, $ops ) ) { // did we end with an operator? bad.
						return self::trigger( "operator '$op' lacks operand" );
					} else {
						break;
					}
				}
				while ( substr( $expr, $index, 1 ) == ' ' ) { // step the index past whitespace (pretty much turns whitespace
					$index++;                             // into implicit multiplication if no operator is there)
				}
			}
			while ( ! is_null( $op = $stack->pop() ) ) { // pop everything off the stack and push onto output
				if ( '(' === $op ) {
					return self::trigger( "expecting ')'" ); // if there are (s on the stack, ()s were unbalanced
				}
				$output[] = $op;
			}
			return $output;
		}

		/**
		 * Evaluate postfix notation.
		 *
		 * @param  mixed $tokens
		 * @param  array $vars
		 *
		 * @return mixed
		 */
		private static function pfx( $tokens, $vars = array() ) {
			if ( false == $tokens ) {
				return false;
			}
			$stack = new WC_Eval_Math_Stack;

			foreach ( $tokens as $token ) { // nice and easy
				// if the token is a binary operator, pop two values off the stack, do the operation, and push the result back on
				if ( in_array( $token, array( '+', '-', '*', '/', '^' ) ) ) {
					if ( is_null( $op2 = $stack->pop() ) ) {
						return self::trigger( "internal error" );
					}
					if ( is_null( $op1 = $stack->pop() ) ) {
						return self::trigger( "internal error" );
					}
					switch ( $token ) {
						case '+':
							$stack->push( $op1 + $op2 );
							break;
						case '-':
							$stack->push( $op1 - $op2 );
							break;
						case '*':
							$stack->push( $op1 * $op2 );
							break;
						case '/':
							if ( 0 == $op2 ) {
								return self::trigger( 'division by zero' );
							}
							$stack->push( $op1 / $op2 );
							break;
						case '^':
							$stack->push( pow( $op1, $op2 ) );
							break;
					}
					// if the token is a unary operator, pop one value off the stack, do the operation, and push it back on
				} elseif ( '_' === $token ) {
					$stack->push( -1 * $stack->pop() );
					// if the token is a function, pop arguments off the stack, hand them to the function, and push the result back on
				} elseif ( ! preg_match( "/^([a-z]\w*)\($/", $token, $matches ) ) {
					if ( is_numeric( $token ) ) {
						$stack->push( $token );
					} elseif ( array_key_exists( $token, self::$v ) ) {
						$stack->push( self::$v[ $token ] );
					} elseif ( array_key_exists( $token, $vars ) ) {
						$stack->push( $vars[ $token ] );
					} else {
						return self::trigger( "undefined variable '$token'" );
					}
				}
			}
			// when we're out of tokens, the stack should have a single element, the final result
			if ( 1 != $stack->count ) {
				return self::trigger( "internal error" );
			}
			return $stack->pop();
		}

		/**
		 * Trigger an error, but nicely, if need be.
		 *
		 * @param  string $msg
		 *
		 * @return bool
		 */
		private static function trigger( $msg ) {
			self::$last_error = $msg;
			if ( ! Constants::is_true( 'DOING_AJAX' ) && Constants::is_true( 'WP_DEBUG' ) ) {
				echo "\nError found in:";
				self::debugPrintCallingFunction();
				trigger_error( $msg, E_USER_WARNING );
			}
			return false;
		}

		/**
		 * Prints the file name, function name, and
		 * line number which called your function
		 * (not this function, then one that  called
		 * it to begin with)
		 */
		private static function debugPrintCallingFunction() {
			$file = 'n/a';
			$func = 'n/a';
			$line = 'n/a';
			$debugTrace = debug_backtrace();
			if ( isset( $debugTrace[1] ) ) {
				$file = $debugTrace[1]['file'] ? $debugTrace[1]['file'] : 'n/a';
				$line = $debugTrace[1]['line'] ? $debugTrace[1]['line'] : 'n/a';
			}
			if ( isset( $debugTrace[2] ) ) {
				$func = $debugTrace[2]['function'] ? $debugTrace[2]['function'] : 'n/a';
			}
			echo "\n$file, $func, $line\n";
		}
	}

	/**
	 * Class WC_Eval_Math_Stack.
	 */
	class WC_Eval_Math_Stack {

		/**
		 * Stack array.
		 *
		 * @var array
		 */
		public $stack = array();

		/**
		 * Stack counter.
		 *
		 * @var integer
		 */
		public $count = 0;

		/**
		 * Push value into stack.
		 *
		 * @param  mixed $val
		 */
		public function push( $val ) {
			$this->stack[ $this->count ] = $val;
			$this->count++;
		}

		/**
		 * Pop value from stack.
		 *
		 * @return mixed
		 */
		public function pop() {
			if ( $this->count > 0 ) {
				$this->count--;
				return $this->stack[ $this->count ];
			}
			return null;
		}

		/**
		 * Get last value from stack.
		 *
		 * @param  int $n
		 *
		 * @return mixed
		 */
		public function last( $n=1 ) {
			$key = $this->count - $n;
			return array_key_exists( $key, $this->stack ) ? $this->stack[ $key ] : null;
		}
	}
}
PK      �"�\�J:b�]  �]    bfi-thumb/bfi-thumb.phpnu W+A��        <?php
/*
 * bfi_thumb - WP Image Resizer v1.3
 *
 * (c) 2013 Benjamin F. Intal / Gambit
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

/** Uses WP's Image Editor Class to resize and filter images
 *
 * @param $url    string the local image URL to manipulate
 * @param $params array the options to perform on the image. Keys and values supported:
 *                'width' int pixels
 *                'height' int pixels
 *                'opacity' int 0-100
 *                'color' string hex-color #000000-#ffffff
 *                'grayscale' bool
 *                'negate' bool
 *                'crop' bool
 *                'crop_only' bool
 *                'crop_x' bool string
 *                'crop_y' bool string
 *                'crop_width' bool string
 *                'crop_height' bool string
 *                'quality' int 1-100
 * @param $single boolean, if false then an array of data will be returned
 *
 * @return string|array containing the url of the resized modified image
 */

if ( ! defined( 'ABSPATH' ) ) exit; // Exit if accessed directly.

if ( ! defined( 'BFITHUMB_UPLOAD_DIR' ) ) {
	define( 'BFITHUMB_UPLOAD_DIR', 'elementor/thumbs' );
}

if ( ! function_exists( 'bfi_thumb' ) ) {

	function bfi_thumb( $url, $params = array(), $single = true ) {
		$class = BFI_Class_Factory::getNewestVersion( 'BFI_Thumb' );

		return call_user_func( array( $class, 'thumb' ), $url, $params, $single );
	}
}


/**
 * Class factory, this is to make sure that when multiple bfi_thumb scripts
 * are used (e.g. a plugin and a theme both use it), we always use the
 * latest version.
 */
if ( ! class_exists( 'BFI_Class_Factory' ) ) {

	class BFI_Class_Factory {

		public static $versions = array();
		public static $latestClass = array();

		public static function addClassVersion( $baseClassName, $className, $version ) {
			if ( empty( self::$versions[ $baseClassName ] ) ) {
				self::$versions[ $baseClassName ] = array();
			}
			self::$versions[ $baseClassName ][] = array(
				'class' => $className,
				'version' => $version,
			);
		}

		public static function getNewestVersion( $baseClassName ) {
			if ( empty( self::$latestClass[ $baseClassName ] ) ) {
				usort( self::$versions[ $baseClassName ], array( __CLASS__, "versionCompare" ) );
				self::$latestClass[ $baseClassName ] = self::$versions[ $baseClassName ][0]['class'];
				unset( self::$versions[ $baseClassName ] );
			}

			return self::$latestClass[ $baseClassName ];
		}

		public static function versionCompare( $a, $b ) {
			return version_compare( $a['version'], $b['version'] ) == 1 ? -1 : 1;
		}
	}
}


/*
 * Change the default image editors
 */
add_filter( 'wp_image_editors', 'bfi_wp_image_editor' );

// Instead of using the default image editors, use our extended ones
if ( ! function_exists( 'bfi_wp_image_editor' ) ) {

	function bfi_wp_image_editor( $editorArray ) {
		// Make sure that we use the latest versions
		return array(
			BFI_Class_Factory::getNewestVersion( 'BFI_Image_Editor_GD' ),
			BFI_Class_Factory::getNewestVersion( 'BFI_Image_Editor_Imagick' ),
		);
	}
}


/*
 * Include the WP Image classes
 */

require_once ABSPATH . WPINC . '/class-wp-image-editor.php';
require_once ABSPATH . WPINC . '/class-wp-image-editor-imagick.php';
require_once ABSPATH . WPINC . '/class-wp-image-editor-gd.php';


/*
 * Enhanced Imagemagick Image Editor
 */


if ( ! class_exists( 'BFI_Image_Editor_Imagick_1_3' ) ) {

	BFI_Class_Factory::addClassVersion( 'BFI_Image_Editor_Imagick', 'BFI_Image_Editor_Imagick_1_3', '1.3' );

	class BFI_Image_Editor_Imagick_1_3 extends WP_Image_Editor_Imagick {

		/** Changes the opacity of the image
		 *
		 * @supports 3.5.1
		 * @access   public
		 *
		 * @param float $opacity (0.0-1.0)
		 *
		 * @return boolean|WP_Error
		 */
		public function opacity( $opacity ) {
			$opacity /= 100;

			try {
				// From: http://stackoverflow.com/questions/3538851/php-imagick-setimageopacity-destroys-transparency-and-does-nothing
				// preserves transparency
				//$this->image->setImageOpacity($opacity);
				return $this->image->evaluateImage( Imagick::EVALUATE_MULTIPLY, $opacity, Imagick::CHANNEL_ALPHA );
			} catch ( Exception $e ) {
				return new WP_Error( 'image_opacity_error', $e->getMessage() );
			}
		}

		/** Tints the image a different color
		 *
		 * @supports 3.5.1
		 * @access   public
		 *
		 * @param string hex color e.g. #ff00ff
		 *
		 * @return boolean|WP_Error
		 */
		public function colorize( $hexColor ) {
			try {
				return $this->image->colorizeImage( $hexColor, 1.0 );
			} catch ( Exception $e ) {
				return new WP_Error( 'image_colorize_error', $e->getMessage() );
			}
		}

		/** Makes the image grayscale
		 *
		 * @supports 3.5.1
		 * @access   public
		 *
		 * @return boolean|WP_Error
		 */
		public function grayscale() {
			try {
				return $this->image->modulateImage( 100, 0, 100 );
			} catch ( Exception $e ) {
				return new WP_Error( 'image_grayscale_error', $e->getMessage() );
			}
		}

		/** Negates the image
		 *
		 * @supports 3.5.1
		 * @access   public
		 *
		 * @return boolean|WP_Error
		 */
		public function negate() {
			try {
				return $this->image->negateImage( false );
			} catch ( Exception $e ) {
				return new WP_Error( 'image_negate_error', $e->getMessage() );
			}
		}
	}
}


/*
 * Enhanced GD Image Editor
 */


if ( ! class_exists( 'BFI_Image_Editor_GD_1_3' ) ) {

	BFI_Class_Factory::addClassVersion( 'BFI_Image_Editor_GD', 'BFI_Image_Editor_GD_1_3', '1.3' );

	class BFI_Image_Editor_GD_1_3 extends WP_Image_Editor_GD {

		/** Rotates current image counter-clockwise by $angle.
		 * Ported from image-edit.php
		 * Added presevation of alpha channels
		 *
		 * @since  3.5.0
		 * @access public
		 *
		 * @param float $angle
		 *
		 * @return boolean|WP_Error
		 */
		public function rotate( $angle ) {
			if ( function_exists( 'imagerotate' ) ) {
				$rotated = imagerotate( $this->image, $angle, 0 );

				// Add alpha blending
				imagealphablending( $rotated, true );
				imagesavealpha( $rotated, true );

				if ( is_resource( $rotated ) ) {
					imagedestroy( $this->image );
					$this->image = $rotated;
					$this->update_size();

					return true;
				}
			}

			return new WP_Error( 'image_rotate_error', 'Image rotate failed.', $this->file );
		}

		/** Changes the opacity of the image
		 *
		 * @supports 3.5.1
		 * @access   public
		 *
		 * @param float $opacity (0.0-1.0)
		 *
		 * @return boolean|WP_Error
		 */
		public function opacity( $opacity ) {
			$opacity /= 100;

			$filtered = $this->_opacity( $this->image, $opacity );

			if ( is_resource( $filtered ) ) {
				// imagedestroy($this->image);
				$this->image = $filtered;

				return true;
			}

			return new WP_Error( 'image_opacity_error', 'Image opacity change failed.', $this->file );
		}


		// from: http://php.net/manual/en/function.imagefilter.php
		// params: image resource id, opacity (eg. 0.0-1.0)
		protected function _opacity( $image, $opacity ) {
			if ( ! function_exists( 'imagealphablending' ) || ! function_exists( 'imagecolorat' ) || ! function_exists( 'imagecolorallocatealpha' ) || ! function_exists( 'imagesetpixel' ) ) {
				return false;
			}

			// get image width and height
			$w = imagesx( $image );
			$h = imagesy( $image );

			// turn alpha blending off
			imagealphablending( $image, false );

			// find the most opaque pixel in the image (the one with the smallest alpha value)
			$minalpha = 127;
			for ( $x = 0; $x < $w; $x++ ) {
				for ( $y = 0; $y < $h; $y++ ) {
					$alpha = ( imagecolorat( $image, $x, $y ) >> 24 ) & 0xFF;
					if ( $alpha < $minalpha ) {
						$minalpha = $alpha;
					}
				}
			}

			// loop through image pixels and modify alpha for each
			for ( $x = 0; $x < $w; $x++ ) {
				for ( $y = 0; $y < $h; $y++ ) {

					// get current alpha value (represents the TANSPARENCY!)
					$colorxy = imagecolorat( $image, $x, $y );
					$alpha = ( $colorxy >> 24 ) & 0xFF;

					// calculate new alpha
					if ( $minalpha !== 127 ) {
						$alpha = 127 + 127 * $opacity * ( $alpha - 127 ) / ( 127 - $minalpha );
					} else {
						$alpha += 127 * $opacity;
					}

					// get the color index with new alpha
					$alphacolorxy = imagecolorallocatealpha( $image, ( $colorxy >> 16 ) & 0xFF, ( $colorxy >> 8 ) & 0xFF, $colorxy & 0xFF, $alpha );

					// set pixel with the new color + opacity
					if ( ! imagesetpixel( $image, $x, $y, $alphacolorxy ) ) {
						return false;
					}
				}
			}

			imagesavealpha( $image, true );

			return $image;
		}

		/** Tints the image a different color
		 *
		 * @supports 3.5.1
		 * @access   public
		 *
		 * @param string hex color e.g. #ff00ff
		 *
		 * @return boolean|WP_Error
		 */
		public function colorize( $hexColor ) {
			if ( function_exists( 'imagefilter' ) && function_exists( 'imagesavealpha' ) && function_exists( 'imagealphablending' ) ) {

				$hexColor = preg_replace( '#^\##', '', $hexColor );
				$r = hexdec( substr( $hexColor, 0, 2 ) );
				$g = hexdec( substr( $hexColor, 2, 2 ) );
				$b = hexdec( substr( $hexColor, 2, 2 ) );

				imagealphablending( $this->image, false );
				if ( imagefilter( $this->image, IMG_FILTER_COLORIZE, $r, $g, $b, 0 ) ) {
					imagesavealpha( $this->image, true );

					return true;
				}
			}

			return new WP_Error( 'image_colorize_error', 'Image color change failed.', $this->file );
		}

		/** Makes the image grayscale
		 *
		 * @supports 3.5.1
		 * @access   public
		 *
		 * @return boolean|WP_Error
		 */
		public function grayscale() {
			if ( function_exists( 'imagefilter' ) ) {
				if ( imagefilter( $this->image, IMG_FILTER_GRAYSCALE ) ) {
					return true;
				}
			}

			return new WP_Error( 'image_grayscale_error', 'Image grayscale failed.', $this->file );
		}

		/** Negates the image
		 *
		 * @supports 3.5.1
		 * @access   public
		 *
		 * @return boolean|WP_Error
		 */
		public function negate() {
			if ( function_exists( 'imagefilter' ) ) {
				if ( imagefilter( $this->image, IMG_FILTER_NEGATE ) ) {
					return true;
				}
			}

			return new WP_Error( 'image_negate_error', 'Image negate failed.', $this->file );
		}
	}
}


/*
 * Main Class
 */
if ( ! class_exists( 'BFI_Thumb_1_3' ) ) {

	BFI_Class_Factory::addClassVersion( 'BFI_Thumb', 'BFI_Thumb_1_3', '1.3' );

	class BFI_Thumb_1_3 {

		/** Uses WP's Image Editor Class to resize and filter images
		 * Inspired by: https://github.com/sy4mil/Aqua-Resizer/blob/master/aq_resizer.php
		 *
		 * @param $url    string the local image URL to manipulate
		 * @param $params array the options to perform on the image. Keys and values supported:
		 *                'width' int pixels
		 *                'height' int pixels
		 *                'opacity' int 0-100
		 *                'color' string hex-color #000000-#ffffff
		 *                'grayscale' bool
		 *                'crop' bool
		 *                'negate' bool
		 *                'crop_only' bool
		 *                'crop_x' bool string
		 *                'crop_y' bool string
		 *                'crop_width' bool string
		 *                'crop_height' bool string
		 *                'quality' int 1-100
		 * @param $single boolean, if false then an array of data will be returned
		 *
		 * @return string|array
		 */
		public static function thumb( $url, $params = array(), $single = true ) {
			extract( $params );

			//validate inputs
			if ( ! $url ) {
				return false;
			}

			$crop_only = isset( $crop_only ) ? $crop_only : false;

			//define upload path & dir
			$upload_info = wp_upload_dir();
			$upload_dir = $upload_info['basedir'];
			$upload_url = $upload_info['baseurl'];
			$theme_url = get_template_directory_uri();
			$theme_dir = get_template_directory();

			// find the path of the image. Perform 2 checks:
			// #1 check if the image is in the uploads folder
			if ( strpos( $url, $upload_url ) !== false ) {
				$rel_path = str_replace( $upload_url, '', $url );
				$img_path = $upload_dir . $rel_path;
				// #2 check if the image is in the current theme folder
			} else if ( strpos( $url, $theme_url ) !== false ) {
				$rel_path = str_replace( $theme_url, '', $url );
				$img_path = $theme_dir . $rel_path;
			}

			// Fail if we can't find the image in our WP local directory
			if ( empty( $img_path ) ) {
				return $url;
			}

			// check if img path exists, and is an image indeed
			if ( ! @file_exists( $img_path ) || ! getimagesize( $img_path ) ) {
				return $url;
			}

			// This is the filename
			$basename = basename( $img_path );

			//get image info
			$info = pathinfo( $img_path );
			$ext = $info['extension'];
			list( $orig_w, $orig_h ) = getimagesize( $img_path );

			// support percentage dimensions. compute percentage based on
			// the original dimensions
			if ( isset( $width ) ) {
				if ( stripos( $width, '%' ) !== false ) {
					$width = (int) ( (float) str_replace( '%', '', $width ) / 100 * $orig_w );
				}
			}
			if ( isset( $height ) ) {
				if ( stripos( $height, '%' ) !== false ) {
					$height = (int) ( (float) str_replace( '%', '', $height ) / 100 * $orig_h );
				}
			}

			// The only purpose of this is to determine the final width and height
			// without performing any actual image manipulation, which will be used
			// to check whether a resize was previously done.
			if ( isset( $width ) && $crop_only === false ) {
				//get image size after cropping
				$dims = image_resize_dimensions( $orig_w, $orig_h, $width, isset( $height ) ? $height : null, isset( $crop ) ? $crop : false );
				$dst_w = $dims[4];
				$dst_h = $dims[5];
			} else if ( $crop_only === true ) {
				// we don't want a resize,
				// but only a crop in the image

				// get x position to start croping
				$src_x = ( isset( $crop_x ) ) ? $crop_x : 0;

				// get y position to start croping
				$src_y = ( isset( $crop_y ) ) ? $crop_y : 0;

				// width of the crop
				if ( isset( $crop_width ) ) {
					$src_w = $crop_width;
				} else if ( isset( $width ) ) {
					$src_w = $width;
				} else {
					$src_w = $orig_w;
				}

				// height of the crop
				if ( isset( $crop_height ) ) {
					$src_h = $crop_height;
				} else if ( isset( $height ) ) {
					$src_h = $height;
				} else {
					$src_h = $orig_h;
				}

				// set the width resize with the crop
				if ( isset( $crop_width ) && isset( $width ) ) {
					$dst_w = $width;
				} else {
					$dst_w = null;
				}

				// set the height resize with the crop
				if ( isset( $crop_height ) && isset( $height ) ) {
					$dst_h = $height;
				} else {
					$dst_h = null;
				}

				// allow percentages
				if ( isset( $dst_w ) ) {
					if ( stripos( $dst_w, '%' ) !== false ) {
						$dst_w = (int) ( (float) str_replace( '%', '', $dst_w ) / 100 * $orig_w );
					}
				}
				if ( isset( $dst_h ) ) {
					if ( stripos( $dst_h, '%' ) !== false ) {
						$dst_h = (int) ( (float) str_replace( '%', '', $dst_h ) / 100 * $orig_h );
					}
				}

				$dims = image_resize_dimensions( $src_w, $src_h, $dst_w, $dst_h, false );
				$dst_w = $dims[4];
				$dst_h = $dims[5];

				// Make the pos x and pos y work with percentages
				if ( stripos( $src_x, '%' ) !== false ) {
					$src_x = (int) ( (float) str_replace( '%', '', $width ) / 100 * $orig_w );
				}
				if ( stripos( $src_y, '%' ) !== false ) {
					$src_y = (int) ( (float) str_replace( '%', '', $height ) / 100 * $orig_h );
				}

				// allow center to position crop start
				if ( $src_x === 'center' ) {
					$src_x = ( $orig_w - $src_w ) / 2;
				}
				if ( $src_y === 'center' ) {
					$src_y = ( $orig_h - $src_h ) / 2;
				}
			}

			// create the suffix for the saved file
			// we can use this to check whether we need to create a new file or just use an existing one.
			$suffix = (string) filemtime( $img_path ) . ( isset( $width ) ? str_pad( (string) $width, 5, '0', STR_PAD_LEFT ) : '00000' ) . ( isset( $height ) ? str_pad( (string) $height, 5, '0', STR_PAD_LEFT ) : '00000' ) . ( isset( $opacity ) ? str_pad( (string) $opacity, 3, '0', STR_PAD_LEFT ) : '100' ) . ( isset( $color ) ? str_pad( preg_replace( '#^\##', '', $color ), 8, '0', STR_PAD_LEFT ) : '00000000' ) . ( isset( $grayscale ) ? ( $grayscale ? '1' : '0' ) : '0' ) . ( isset( $crop ) ? ( $crop ? '1' : '0' ) : '0' ) . ( isset( $negate ) ? ( $negate ? '1' : '0' ) : '0' ) . ( isset( $crop_only ) ? ( $crop_only ? '1' : '0' ) : '0' ) . ( isset( $src_x ) ? str_pad( (string) $src_x, 5, '0', STR_PAD_LEFT ) : '00000' ) . ( isset( $src_y ) ? str_pad( (string) $src_y, 5, '0', STR_PAD_LEFT ) : '00000' ) . ( isset( $src_w ) ? str_pad( (string) $src_w, 5, '0', STR_PAD_LEFT ) : '00000' ) . ( isset( $src_h ) ? str_pad( (string) $src_h, 5, '0', STR_PAD_LEFT ) : '00000' ) . ( isset( $dst_w ) ? str_pad( (string) $dst_w, 5, '0', STR_PAD_LEFT ) : '00000' ) . ( isset( $dst_h ) ? str_pad( (string) $dst_h, 5, '0', STR_PAD_LEFT ) : '00000' ) . ( ( isset ( $quality ) && $quality > 0 && $quality <= 100 ) ? ( $quality ? (string) $quality : '0' ) : '0' );
			$suffix = self::base_convert_arbitrary( $suffix, 10, 36 );

			// use this to check if cropped image already exists, so we can return that instead
			$dst_rel_path = str_replace( '.' . $ext, '', basename( $img_path ) );

			// If opacity is set, change the image type to png
			if ( isset( $opacity ) ) {
				$ext = 'png';
			}


			// Create the upload subdirectory, this is where
			// we store all our generated images
			if ( defined( 'BFITHUMB_UPLOAD_DIR' ) ) {
				$upload_dir .= "/" . BFITHUMB_UPLOAD_DIR;
				$upload_url .= "/" . BFITHUMB_UPLOAD_DIR;
			} else {
				$upload_dir .= "/bfi_thumb";
				$upload_url .= "/bfi_thumb";
			}
			if ( ! is_dir( $upload_dir ) ) {
				wp_mkdir_p( $upload_dir );
			}


			// desination paths and urls
			$destfilename = "{$upload_dir}/{$dst_rel_path}-{$suffix}.{$ext}";

			// The urls generated have lower case extensions regardless of the original case
			$ext = strtolower( $ext );
			$img_url = "{$upload_url}/{$dst_rel_path}-{$suffix}.{$ext}";

			// if file exists, just return it
			if ( @file_exists( $destfilename ) && getimagesize( $destfilename ) ) {
			} else {
				// perform resizing and other filters
				$editor = wp_get_image_editor( $img_path );

				if ( is_wp_error( $editor ) ) {
					return false;
				}

				/*
				 * Perform image manipulations
				 */
				if ( $crop_only === false ) {
					if ( ( isset( $width ) && $width ) || ( isset( $height ) && $height ) ) {
						if ( is_wp_error( $editor->resize( isset( $width ) ? $width : null, isset( $height ) ? $height : null, isset( $crop ) ? $crop : false ) ) ) {
							return false;
						}
					}
				} else {
					if ( is_wp_error( $editor->crop( $src_x, $src_y, $src_w, $src_h, $dst_w, $dst_h ) ) ) {
						return false;
					}
				}

				if ( isset( $negate ) ) {
					if ( $negate ) {
						if ( is_wp_error( $editor->negate() ) ) {
							return false;
						}
					}
				}

				if ( isset( $opacity ) ) {
					if ( is_wp_error( $editor->opacity( $opacity ) ) ) {
						return false;
					}
				}

				if ( isset( $grayscale ) ) {
					if ( $grayscale ) {
						if ( is_wp_error( $editor->grayscale() ) ) {
							return false;
						}
					}
				}

				if ( isset( $color ) ) {
					if ( is_wp_error( $editor->colorize( $color ) ) ) {
						return false;
					}
				}

				// set the image quality (1-100) to save this image at
				if ( isset( $quality ) && $quality > 0 && $quality <= 100 && $ext != 'png' ) {
					$editor->set_quality( $quality );
				}

				// save our new image
				$mime_type = isset( $opacity ) ? 'image/png' : null;
				$resized_file = $editor->save( $destfilename, $mime_type );
			}

			//return the output
			if ( $single ) {
				$image = $img_url;
			} else {
				//array return
				$image = array(
					0 => $img_url,
					1 => isset( $dst_w ) ? $dst_w : $orig_w,
					2 => isset( $dst_h ) ? $dst_h : $orig_h,
				);
			}

			return $image;
		}

		/** Shortens a number into a base 36 string
		 *
		 * @param $number   string a string of numbers to convert
		 * @param $fromBase starting base
		 * @param $toBase   base to convert the number to
		 *
		 * @return string base converted characters
		 */
		protected static function base_convert_arbitrary( $number, $fromBase, $toBase ) {
			$digits = '0123456789abcdefghijklmnopqrstuvwxyz';
			$length = strlen( $number );
			$result = '';

			$nibbles = array();
			for ( $i = 0; $i < $length; ++$i ) {
				$nibbles[ $i ] = strpos( $digits, $number[ $i ] );
			}

			do {
				$value = 0;
				$newlen = 0;

				for ( $i = 0; $i < $length; ++$i ) {

					$value = $value * $fromBase + $nibbles[ $i ];

					if ( $value >= $toBase ) {
						$nibbles[ $newlen++ ] = (int) ( $value / $toBase );
						$value %= $toBase;
					} else if ( $newlen > 0 ) {
						$nibbles[ $newlen++ ] = 0;
					}
				}

				$length = $newlen;
				$result = $digits[ $value ] . $result;
			} while ( $newlen != 0 );

			return $result;
		}
	}
}


// don't use the default resizer since we want to allow resizing to larger sizes (than the original one)
// Parts are copied from media.php
// Crop is always applied (just like timthumb)
// Don't use this inside the admin since sometimes images in the media library get resized
if ( ! is_admin() ) {
	add_filter( 'image_resize_dimensions', 'bfi_image_resize_dimensions', 10, 5 );
}

if ( ! function_exists( 'bfi_image_resize_dimensions' ) ) {
	function bfi_image_resize_dimensions( $payload, $orig_w, $orig_h, $dest_w, $dest_h, $crop = false ) {
		$aspect_ratio = $orig_w / $orig_h;

		$new_w = $dest_w;
		$new_h = $dest_h;

		if ( empty( $new_w ) || $new_w < 0 ) {
			$new_w = intval( $new_h * $aspect_ratio );
		}

		if ( empty( $new_h ) || $new_h < 0 ) {
			$new_h = intval( $new_w / $aspect_ratio );
		}

		$size_ratio = max( $new_w / $orig_w, $new_h / $orig_h );

		$crop_w = round( $new_w / $size_ratio );
		$crop_h = round( $new_h / $size_ratio );
		$s_x = floor( ( $orig_w - $crop_w ) / 2 );
		$s_y = floor( ( $orig_h - $crop_h ) / 2 );

		// Safe guard against super large or zero images which might cause 500 errors
		if ( $new_w > 5000 || $new_h > 5000 || $new_w <= 0 || $new_h <= 0 ) {
			return null;
		}

		// the return array matches the parameters to imagecopyresampled()
		// int dst_x, int dst_y, int src_x, int src_y, int dst_w, int dst_h, int src_w, int src_h
		return array( 0, 0, (int) $s_x, (int) $s_y, (int) $new_w, (int) $new_h, (int) $crop_w, (int) $crop_h );
	}
}


// This function allows us to latch on WP image functions such as
// the_post_thumbnail, get_image_tag and wp_get_attachment_image_src
// so that you won't have to use the function bfi_thumb in order to do resizing.
// To make this work, in the WP image functions, when specifying an
// array for the image dimensions, add a 'bfi_thumb' => true to
// the array, then add your normal $params arguments.
//
// e.g. the_post_thumbnail( array( 1024, 400, 'bfi_thumb' => true, 'grayscale' => true ) );
add_filter( 'image_downsize', 'bfi_image_downsize', 1, 3 );

if ( ! function_exists( 'bfi_image_downsize' ) ) {
	function bfi_image_downsize( $out, $id, $size ) {
		if ( ! is_array( $size ) ) {
			return false;
		}
		if ( ! array_key_exists( 'bfi_thumb', $size ) ) {
			return false;
		}
		if ( empty( $size['bfi_thumb'] ) ) {
			return false;
		}

		$img_url = wp_get_attachment_url( $id );

		$params = $size;
		$params['width'] = $size[0];
		$params['height'] = $size[1];

		$resized_img_url = bfi_thumb( $img_url, $params );

		return array( $resized_img_url, $size[0], $size[1], false );
	}
}
PK      �"�\E����*  �*  /  wp-background-process/wp-background-process.phpnu W+A��        <?php

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

/**
 * https://github.com/A5hleyRich/wp-background-processing GPL v2.0
 *
 * WP Background Process
 *
 * @package WP-Background-Processing
 */

if ( ! class_exists( 'WP_Background_Process' ) ) {

	/**
	 * Abstract WP_Background_Process class.
	 *
	 * @abstract
	 * @extends WP_Async_Request
	 */
	abstract class WP_Background_Process extends WP_Async_Request {

		/**
		 * Action
		 *
		 * (default value: 'background_process')
		 *
		 * @var string
		 * @access protected
		 */
		protected $action = 'background_process';

		/**
		 * Start time of current process.
		 *
		 * (default value: 0)
		 *
		 * @var int
		 * @access protected
		 */
		protected $start_time = 0;

		/**
		 * Cron_hook_identifier
		 *
		 * @var mixed
		 * @access protected
		 */
		protected $cron_hook_identifier;

		/**
		 * Cron_interval_identifier
		 *
		 * @var mixed
		 * @access protected
		 */
		protected $cron_interval_identifier;

		/**
		 * Initiate new background process
		 */
		public function __construct() {
			parent::__construct();

			$this->cron_hook_identifier     = $this->identifier . '_cron';
			$this->cron_interval_identifier = $this->identifier . '_cron_interval';

			add_action( $this->cron_hook_identifier, array( $this, 'handle_cron_healthcheck' ) );
			add_filter( 'cron_schedules', array( $this, 'schedule_cron_healthcheck' ) );
		}

		/**
		 * Dispatch
		 *
		 * @access public
		 * @return void
		 */
		public function dispatch() {
			// Schedule the cron healthcheck.
			$this->schedule_event();

			// Perform remote post.
			return parent::dispatch();
		}

		/**
		 * Push to queue
		 *
		 * @param mixed $data Data.
		 *
		 * @return $this
		 */
		public function push_to_queue( $data ) {
			$this->data[] = $data;

			return $this;
		}

		/**
		 * Save queue
		 *
		 * @return $this
		 */
		public function save() {
			$key = $this->generate_key();

			if ( ! empty( $this->data ) ) {
				update_site_option( $key, $this->data );
			}

			return $this;
		}

		/**
		 * Update queue
		 *
		 * @param string $key Key.
		 * @param array  $data Data.
		 *
		 * @return $this
		 */
		public function update( $key, $data ) {
			if ( ! empty( $data ) ) {
				update_site_option( $key, $data );
			}

			return $this;
		}

		/**
		 * Delete queue
		 *
		 * @param string $key Key.
		 *
		 * @return $this
		 */
		public function delete( $key ) {
			delete_site_option( $key );

			return $this;
		}

		/**
		 * Generate key
		 *
		 * Generates a unique key based on microtime. Queue items are
		 * given a unique key so that they can be merged upon save.
		 *
		 * @param int $length Length.
		 *
		 * @return string
		 */
		protected function generate_key( $length = 64 ) {
			$unique  = md5( microtime() . rand() );
			$prepend = $this->identifier . '_batch_';

			return substr( $prepend . $unique, 0, $length );
		}

		/**
		 * Maybe process queue
		 *
		 * Checks whether data exists within the queue and that
		 * the process is not already running.
		 */
		public function maybe_handle() {
			// Don't lock up other requests while processing
			session_write_close();

			if ( $this->is_process_running() ) {
				// Background process already running.
				wp_die();
			}

			if ( $this->is_queue_empty() ) {
				// No data to process.
				wp_die();
			}

			check_ajax_referer( $this->identifier, 'nonce' );

			$this->handle();

			wp_die();
		}

		/**
		 * Is queue empty
		 *
		 * @return bool
		 */
		protected function is_queue_empty() {
			global $wpdb;

			$table  = $wpdb->options;
			$column = 'option_name';

			if ( is_multisite() ) {
				$table  = $wpdb->sitemeta;
				$column = 'meta_key';
			}

			$key = $wpdb->esc_like( $this->identifier . '_batch_' ) . '%';

			$count = $wpdb->get_var( $wpdb->prepare( "
			SELECT COUNT(*)
			FROM {$table}
			WHERE {$column} LIKE %s
		", $key ) );

			return ( $count > 0 ) ? false : true;
		}

		/**
		 * Is process running
		 *
		 * Check whether the current process is already running
		 * in a background process.
		 */
		protected function is_process_running() {
			if ( get_site_transient( $this->identifier . '_process_lock' ) ) {
				// Process already running.
				return true;
			}

			return false;
		}

		/**
		 * Lock process
		 *
		 * Lock the process so that multiple instances can't run simultaneously.
		 * Override if applicable, but the duration should be greater than that
		 * defined in the time_exceeded() method.
		 */
		protected function lock_process() {
			$this->start_time = time(); // Set start time of current process.

			$lock_duration = ( property_exists( $this, 'queue_lock_time' ) ) ? $this->queue_lock_time : 60; // 1 minute
			$lock_duration = apply_filters( $this->identifier . '_queue_lock_time', $lock_duration );

			set_site_transient( $this->identifier . '_process_lock', microtime(), $lock_duration );
		}

		/**
		 * Unlock process
		 *
		 * Unlock the process so that other instances can spawn.
		 *
		 * @return $this
		 */
		protected function unlock_process() {
			delete_site_transient( $this->identifier . '_process_lock' );

			return $this;
		}

		/**
		 * Get batch
		 *
		 * @return stdClass Return the first batch from the queue
		 */
		protected function get_batch() {
			global $wpdb;

			$table        = $wpdb->options;
			$column       = 'option_name';
			$key_column   = 'option_id';
			$value_column = 'option_value';

			if ( is_multisite() ) {
				$table        = $wpdb->sitemeta;
				$column       = 'meta_key';
				$key_column   = 'meta_id';
				$value_column = 'meta_value';
			}

			$key = $wpdb->esc_like( $this->identifier . '_batch_' ) . '%';

			$query = $wpdb->get_row( $wpdb->prepare( "
			SELECT *
			FROM {$table}
			WHERE {$column} LIKE %s
			ORDER BY {$key_column} ASC
			LIMIT 1
		", $key ) );

			$batch       = new stdClass();
			$batch->key  = $query->$column;
			$batch->data = maybe_unserialize( $query->$value_column );

			return $batch;
		}

		/**
		 * Handle
		 *
		 * Pass each queue item to the task handler, while remaining
		 * within server memory and time limit constraints.
		 */
		protected function handle() {
			$this->lock_process();

			do {
				$batch = $this->get_batch();

				foreach ( $batch->data as $key => $value ) {
					$task = $this->task( $value );

					if ( false !== $task ) {
						$batch->data[ $key ] = $task;
					} else {
						unset( $batch->data[ $key ] );
					}

					if ( $this->time_exceeded() || $this->memory_exceeded() ) {
						// Batch limits reached.
						break;
					}
				}

				// Update or delete current batch.
				if ( ! empty( $batch->data ) ) {
					$this->update( $batch->key, $batch->data );
				} else {
					$this->delete( $batch->key );
				}
			} while ( ! $this->time_exceeded() && ! $this->memory_exceeded() && ! $this->is_queue_empty() );

			$this->unlock_process();

			// Start next batch or complete process.
			if ( ! $this->is_queue_empty() ) {
				$this->dispatch();
			} else {
				$this->complete();
			}

			wp_die();
		}

		/**
		 * Memory exceeded
		 *
		 * Ensures the batch process never exceeds 90%
		 * of the maximum WordPress memory.
		 *
		 * @return bool
		 */
		protected function memory_exceeded() {
			$memory_limit   = $this->get_memory_limit() * 0.9; // 90% of max memory
			$current_memory = memory_get_usage( true );
			$return         = false;

			if ( $current_memory >= $memory_limit ) {
				$return = true;
			}

			return apply_filters( $this->identifier . '_memory_exceeded', $return );
		}

		/**
		 * Get memory limit
		 *
		 * @return int
		 */
		protected function get_memory_limit() {
			if ( function_exists( 'ini_get' ) ) {
				$memory_limit = ini_get( 'memory_limit' );
			} else {
				// Sensible default.
				$memory_limit = '128M';
			}

			if ( ! $memory_limit || -1 === intval( $memory_limit ) ) {
				// Unlimited, set to 32GB.
				$memory_limit = '32000M';
			}

			return intval( $memory_limit ) * 1024 * 1024;
		}

		/**
		 * Time exceeded.
		 *
		 * Ensures the batch never exceeds a sensible time limit.
		 * A timeout limit of 30s is common on shared hosting.
		 *
		 * @return bool
		 */
		protected function time_exceeded() {
			$finish = $this->start_time + apply_filters( $this->identifier . '_default_time_limit', 20 ); // 20 seconds
			$return = false;

			if ( time() >= $finish ) {
				$return = true;
			}

			return apply_filters( $this->identifier . '_time_exceeded', $return );
		}

		/**
		 * Complete.
		 *
		 * Override if applicable, but ensure that the below actions are
		 * performed, or, call parent::complete().
		 */
		protected function complete() {
			// Unschedule the cron healthcheck.
			$this->clear_scheduled_event();
		}

		/**
		 * Schedule cron healthcheck
		 *
		 * @access public
		 * @param mixed $schedules Schedules.
		 * @return mixed
		 */
		public function schedule_cron_healthcheck( $schedules ) {
			$interval = apply_filters( $this->identifier . '_cron_interval', 5 );

			if ( property_exists( $this, 'cron_interval' ) ) {
				$interval = apply_filters( $this->identifier . '_cron_interval', $this->cron_interval );
			}

			// Adds every 5 minutes to the existing schedules.
			$schedules[ $this->identifier . '_cron_interval' ] = array(
				'interval' => MINUTE_IN_SECONDS * $interval,
				'display'  => sprintf( __( 'Every %d Minutes', 'elementor' ), $interval ),
			);

			return $schedules;
		}

		/**
		 * Handle cron healthcheck
		 *
		 * Restart the background process if not already running
		 * and data exists in the queue.
		 */
		public function handle_cron_healthcheck() {
			if ( $this->is_process_running() ) {
				// Background process already running.
				exit;
			}

			if ( $this->is_queue_empty() ) {
				// No data to process.
				$this->clear_scheduled_event();
				exit;
			}

			$this->handle();

			exit;
		}

		/**
		 * Schedule event
		 */
		protected function schedule_event() {
			if ( ! wp_next_scheduled( $this->cron_hook_identifier ) ) {
				wp_schedule_event( time(), $this->cron_interval_identifier, $this->cron_hook_identifier );
			}
		}

		/**
		 * Clear scheduled event
		 */
		protected function clear_scheduled_event() {
			$timestamp = wp_next_scheduled( $this->cron_hook_identifier );

			if ( $timestamp ) {
				wp_unschedule_event( $timestamp, $this->cron_hook_identifier );
			}
		}

		/**
		 * Cancel Process
		 *
		 * Stop processing queue items, clear cronjob and delete batch.
		 *
		 */
		public function cancel_process() {
			if ( ! $this->is_queue_empty() ) {
				$batch = $this->get_batch();

				$this->delete( $batch->key );

				wp_clear_scheduled_hook( $this->cron_hook_identifier );
			}

		}

		/**
		 * Task
		 *
		 * Override this method to perform any actions required on each
		 * queue item. Return the modified item for further processing
		 * in the next pass through. Or, return false to remove the
		 * item from the queue.
		 *
		 * @param mixed $item Queue item to iterate over.
		 *
		 * @return mixed
		 */
		abstract protected function task( $item );

	}
}
PK      �"�\j���  �  *  wp-background-process/wp-async-request.phpnu W+A��        <?php

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

/**
 * https://github.com/A5hleyRich/wp-background-processing GPL v2.0
 *
 * WP Async Request
 *
 * @package WP-Background-Processing
 */

if ( ! class_exists( 'WP_Async_Request' ) ) {

	/**
	 * Abstract WP_Async_Request class.
	 *
	 * @abstract
	 */
	abstract class WP_Async_Request {

		/**
		 * Prefix
		 *
		 * (default value: 'wp')
		 *
		 * @var string
		 * @access protected
		 */
		protected $prefix = 'wp';

		/**
		 * Action
		 *
		 * (default value: 'async_request')
		 *
		 * @var string
		 * @access protected
		 */
		protected $action = 'async_request';

		/**
		 * Identifier
		 *
		 * @var mixed
		 * @access protected
		 */
		protected $identifier;

		/**
		 * Data
		 *
		 * (default value: array())
		 *
		 * @var array
		 * @access protected
		 */
		protected $data = array();

		/**
		 * Initiate new async request
		 */
		public function __construct() {
			$this->identifier = $this->prefix . '_' . $this->action;

			add_action( 'wp_ajax_' . $this->identifier, array( $this, 'maybe_handle' ) );
			add_action( 'wp_ajax_nopriv_' . $this->identifier, array( $this, 'maybe_handle' ) );
		}

		/**
		 * Set data used during the request
		 *
		 * @param array $data Data.
		 *
		 * @return $this
		 */
		public function data( $data ) {
			$this->data = $data;

			return $this;
		}

		/**
		 * Dispatch the async request
		 *
		 * @return array|WP_Error
		 */
		public function dispatch() {
			$url  = add_query_arg( $this->get_query_args(), $this->get_query_url() );
			$args = $this->get_post_args();

			return wp_remote_post( esc_url_raw( $url ), $args );
		}

		/**
		 * Get query args
		 *
		 * @return array
		 */
		protected function get_query_args() {
			if ( property_exists( $this, 'query_args' ) ) {
				return $this->query_args;
			}

			return array(
				'action' => $this->identifier,
				'nonce'  => wp_create_nonce( $this->identifier ),
			);
		}

		/**
		 * Get query URL
		 *
		 * @return string
		 */
		protected function get_query_url() {
			if ( property_exists( $this, 'query_url' ) ) {
				return $this->query_url;
			}

			return admin_url( 'admin-ajax.php' );
		}

		/**
		 * Get post args
		 *
		 * @return array
		 */
		protected function get_post_args() {
			if ( property_exists( $this, 'post_args' ) ) {
				return $this->post_args;
			}

			return array(
				'timeout'   => 0.01,
				'blocking'  => false,
				'body'      => $this->data,
				'cookies'   => $_COOKIE,
				'sslverify' => apply_filters( 'https_local_ssl_verify', false ),
			);
		}

		/**
		 * Maybe handle
		 *
		 * Check for correct nonce and pass to handler.
		 */
		public function maybe_handle() {
			// Don't lock up other requests while processing
			session_write_close();

			check_ajax_referer( $this->identifier, 'nonce' );

			$this->handle();

			wp_die();
		}

		/**
		 * Handle
		 *
		 * Override this method to perform any actions required
		 * during the async request.
		 */
		abstract protected function handle();

	}
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