initial commit

hamrokhaanpaan/wp-content/plugins/litespeed-cache/src/preset.cls.php

@@ -0,0 +1,279 @@
+<?php
+/**
+ * The preset class.
+ *
+ * @since  5.3.0
+ */
+namespace LiteSpeed;
+
+defined('WPINC') || exit();
+
+class Preset extends Import
+{
+	protected $_summary;
+
+	const MAX_BACKUPS = 10;
+
+	const TYPE_APPLY = 'apply';
+	const TYPE_RESTORE = 'restore';
+
+	const STANDARD_DIR = LSCWP_DIR . 'data/preset';
+	const BACKUP_DIR = LITESPEED_STATIC_DIR . '/auto-backup';
+
+	/**
+	 * Returns sorted backup names
+	 *
+	 * @since  5.3.0
+	 * @access public
+	 */
+	public static function get_backups()
+	{
+		self::init_filesystem();
+		global $wp_filesystem;
+
+		$backups = array_map(
+			function ($path) {
+				return self::basename($path['name']);
+			},
+			$wp_filesystem->dirlist(self::BACKUP_DIR) ?: array()
+		);
+		rsort($backups);
+
+		return $backups;
+	}
+
+	/**
+	 * Removes extra backup files
+	 *
+	 * @since  5.3.0
+	 * @access public
+	 */
+	public static function prune_backups()
+	{
+		$backups = self::get_backups();
+		global $wp_filesystem;
+
+		foreach (array_slice($backups, self::MAX_BACKUPS) as $backup) {
+			$path = self::get_backup($backup);
+			$wp_filesystem->delete($path);
+			Debug2::debug('[Preset] Deleted old backup from ' . $backup);
+		}
+	}
+
+	/**
+	 * Returns a settings file's extensionless basename given its filesystem path
+	 *
+	 * @since  5.3.0
+	 * @access public
+	 */
+	public static function basename($path)
+	{
+		return basename($path, '.data');
+	}
+
+	/**
+	 * Returns a standard preset's path given its extensionless basename
+	 *
+	 * @since  5.3.0
+	 * @access public
+	 */
+	public static function get_standard($name)
+	{
+		return path_join(self::STANDARD_DIR, $name . '.data');
+	}
+
+	/**
+	 * Returns a backup's path given its extensionless basename
+	 *
+	 * @since  5.3.0
+	 * @access public
+	 */
+	public static function get_backup($name)
+	{
+		return path_join(self::BACKUP_DIR, $name . '.data');
+	}
+
+	/**
+	 * Initializes the global $wp_filesystem object and clears stat cache
+	 *
+	 * @since  5.3.0
+	 */
+	static function init_filesystem()
+	{
+		require_once ABSPATH . '/wp-admin/includes/file.php';
+		\WP_Filesystem();
+		clearstatcache();
+	}
+
+	/**
+	 * Init
+	 *
+	 * @since  5.3.0
+	 */
+	public function __construct()
+	{
+		Debug2::debug('[Preset] Init');
+		$this->_summary = self::get_summary();
+	}
+
+	/**
+	 * Applies a standard preset's settings given its extensionless basename
+	 *
+	 * @since  5.3.0
+	 * @access public
+	 */
+	public function apply($preset)
+	{
+		$this->make_backup($preset);
+
+		$path = self::get_standard($preset);
+		$result = $this->import_file($path) ? $preset : 'error';
+
+		$this->log($result);
+	}
+
+	/**
+	 * Restores settings from the backup file with the given timestamp, then deletes the file
+	 *
+	 * @since  5.3.0
+	 * @access public
+	 */
+	public function restore($timestamp)
+	{
+		$backups = array();
+		foreach (self::get_backups() as $backup) {
+			if (preg_match('/^backup-' . $timestamp . '(-|$)/', $backup) === 1) {
+				$backups[] = $backup;
+			}
+		}
+
+		if (empty($backups)) {
+			$this->log('error');
+			return;
+		}
+
+		$backup = $backups[0];
+		$path = self::get_backup($backup);
+
+		if (!$this->import_file($path)) {
+			$this->log('error');
+			return;
+		}
+
+		self::init_filesystem();
+		global $wp_filesystem;
+
+		$wp_filesystem->delete($path);
+		Debug2::debug('[Preset] Deleted most recent backup from ' . $backup);
+
+		$this->log('backup');
+	}
+
+	/**
+	 * Saves current settings as a backup file, then prunes extra backup files
+	 *
+	 * @since  5.3.0
+	 * @access public
+	 */
+	public function make_backup($preset)
+	{
+		$backup = 'backup-' . time() . '-before-' . $preset;
+		$data = $this->export(true);
+
+		$path = self::get_backup($backup);
+		File::save($path, $data, true);
+		Debug2::debug('[Preset] Backup saved to ' . $backup);
+
+		self::prune_backups();
+	}
+
+	/**
+	 * Tries to import from a given settings file
+	 *
+	 * @since  5.3.0
+	 */
+	function import_file($path)
+	{
+		$debug = function ($result, $name) {
+			$action = $result ? 'Applied' : 'Failed to apply';
+			Debug2::debug('[Preset] ' . $action . ' settings from ' . $name);
+			return $result;
+		};
+
+		$name = self::basename($path);
+		$contents = file_get_contents($path);
+
+		if (false === $contents) {
+			Debug2::debug('[Preset] ❌ Failed to get file contents');
+			return $debug(false, $name);
+		}
+
+		$parsed = array();
+		try {
+			// Check if the data is v4+
+			if (strpos($contents, '["_version",') === 0) {
+				$contents = explode("\n", $contents);
+				foreach ($contents as $line) {
+					$line = trim($line);
+					if (empty($line)) {
+						continue;
+					}
+					list($key, $value) = json_decode($line, true);
+					$parsed[$key] = $value;
+				}
+			} else {
+				$parsed = json_decode(base64_decode($contents), true);
+			}
+		} catch (\Exception $ex) {
+			Debug2::debug('[Preset] ❌ Failed to parse serialized data');
+			return $debug(false, $name);
+		}
+
+		if (empty($parsed)) {
+			Debug2::debug('[Preset] ❌ Nothing to apply');
+			return $debug(false, $name);
+		}
+
+		$this->cls('Conf')->update_confs($parsed);
+
+		return $debug(true, $name);
+	}
+
+	/**
+	 * Updates the log
+	 *
+	 * @since  5.3.0
+	 */
+	function log($preset)
+	{
+		$this->_summary['preset'] = $preset;
+		$this->_summary['preset_timestamp'] = time();
+		self::save_summary();
+	}
+
+	/**
+	 * Handles all request actions from main cls
+	 *
+	 * @since  5.3.0
+	 * @access public
+	 */
+	public function handler()
+	{
+		$type = Router::verify_type();
+
+		switch ($type) {
+			case self::TYPE_APPLY:
+				$this->apply(!empty($_GET['preset']) ? $_GET['preset'] : false);
+				break;
+
+			case self::TYPE_RESTORE:
+				$this->restore(!empty($_GET['timestamp']) ? $_GET['timestamp'] : false);
+				break;
+
+			default:
+				break;
+		}
+
+		Admin::redirect();
+	}
+}