installed plugin Easy Digital Downloads version 3.1.0.3

wp-content/plugins/easy-digital-downloads/includes/libraries/wp-session.php

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+<?php
+/**
+ * WordPress session management.
+ *
+ * Standardizes WordPress session data and uses either database transients or
+ * in-memory caching for storing user session information.
+ *
+ * @package WordPress
+ * @subpackage Session
+ * @since   3.7.0
+ */
+
+// Exit if accessed directly
+defined( 'ABSPATH' ) || exit;
+
+/**
+ * Return the current cache expire setting.
+ *
+ * @return int
+ */
+function wp_session_cache_expire() {
+	$wp_session = WP_Session::get_instance();
+
+	return $wp_session->cache_expiration();
+}
+
+/**
+ * Alias of wp_session_write_close()
+ */
+function wp_session_commit() {
+	wp_session_write_close();
+}
+
+/**
+ * Load a JSON-encoded string into the current session.
+ *
+ * @param string $data
+ */
+function wp_session_decode( $data ) {
+	$wp_session = WP_Session::get_instance();
+
+	return $wp_session->json_in( $data );
+}
+
+/**
+ * Encode the current session's data as a JSON string.
+ *
+ * @return string
+ */
+function wp_session_encode() {
+	$wp_session = WP_Session::get_instance();
+
+	return $wp_session->json_out();
+}
+
+/**
+ * Regenerate the session ID.
+ *
+ * @param bool $delete_old_session
+ *
+ * @return bool
+ */
+function wp_session_regenerate_id( $delete_old_session = false ) {
+	$wp_session = WP_Session::get_instance();
+
+	$wp_session->regenerate_id( $delete_old_session );
+
+	return true;
+}
+
+/**
+ * Start new or resume existing session.
+ *
+ * Resumes an existing session based on a value sent by the _wp_session cookie.
+ *
+ * @return bool
+ */
+function wp_session_start() {
+	$wp_session = WP_Session::get_instance();
+	do_action( 'wp_session_start' );
+
+	return $wp_session->session_started();
+}
+add_action( 'plugins_loaded', 'wp_session_start' );
+
+/**
+ * Return the current session status.
+ *
+ * @return int
+ */
+function wp_session_status() {
+	$wp_session = WP_Session::get_instance();
+
+	if ( $wp_session->session_started() ) {
+		return PHP_SESSION_ACTIVE;
+	}
+
+	return PHP_SESSION_NONE;
+}
+
+/**
+ * Unset all session variables.
+ */
+function wp_session_unset() {
+	$wp_session = WP_Session::get_instance();
+
+	$wp_session->reset();
+}
+
+/**
+ * Write session data and end session
+ */
+function wp_session_write_close() {
+	$wp_session = WP_Session::get_instance();
+
+	$wp_session->write_data();
+	do_action( 'wp_session_commit' );
+}
+add_action( 'shutdown', 'wp_session_write_close' );
+
+/**
+ * Clean up expired sessions by removing data and their expiration entries from
+ * the WordPress options table.
+ *
+ * This method should never be called directly and should instead be triggered as part
+ * of a scheduled task or cron job.
+ */
+function wp_session_cleanup() {
+	global $wpdb;
+
+	if ( defined( 'WP_SETUP_CONFIG' ) ) {
+		return;
+	}
+
+	if ( ! defined( 'WP_INSTALLING' ) ) {
+		$expiration_keys = $wpdb->get_results( "SELECT option_name, option_value FROM $wpdb->options WHERE option_name LIKE '_wp_session_expires_%'" );
+
+		$now = current_time( 'timestamp' );
+		$expired_sessions = array();
+
+		foreach( $expiration_keys as $expiration ) {
+
+			// If the session has expired
+			if ( $now > intval( $expiration->option_value ) ) {
+
+				// Get the session ID by parsing the option_name
+				$session_id = substr( $expiration->option_name, 20 );
+
+				if( (int) -1 === (int) $session_id || ! preg_match( '/^[a-f0-9]{32}$/', $session_id ) ) {
+					continue;
+				}
+
+				$expired_sessions[] = $expiration->option_name;
+				$expired_sessions[] = esc_sql( "_wp_session_$session_id" );
+			}
+		}
+
+		// Delete all expired sessions in a single query
+		if ( ! empty( $expired_sessions ) ) {
+			$option_names = implode( "','", $expired_sessions );
+			$wpdb->query( "DELETE FROM $wpdb->options WHERE option_name IN ('$option_names')"  );
+		}
+	}
+
+	// Allow other plugins to hook in to the garbage collection process.
+	do_action( 'wp_session_cleanup' );
+}
+add_action( 'wp_session_garbage_collection', 'wp_session_cleanup' );
+
+/**
+ * Register the garbage collector as a twice daily event.
+ */
+function wp_session_register_garbage_collection() {
+	if ( ! wp_next_scheduled( 'wp_session_garbage_collection' ) ) {
+		wp_schedule_event( current_time( 'timestamp' ), 'twicedaily', 'wp_session_garbage_collection' );
+	}
+}
+add_action( 'wp', 'wp_session_register_garbage_collection' );