/wp-content/plugins/wpforo/wpf-includes/class-cache.php

<?php

	// Exit if accessed directly

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



class wpForoCache{

	public $object;

	public $dir;

	public $lang;

	

	function __construct(){

		$this->init();

	}

	

	private function init(){

		$wp_upload_dir = wp_upload_dir();

		$uplds_dir = $wp_upload_dir['basedir']."/wpforo";

		$cache_dir = $uplds_dir . "/cache";

		if(!is_dir($uplds_dir)) wp_mkdir_p($uplds_dir);

		if(!is_dir($cache_dir)) $this->dir($cache_dir);

		$this->dir = $cache_dir;

		$this->lang = get_locale();

	}



    public function get_key( $type = 'html' ){

		if($type == 'html'){ 

			$ug = WPF()->current_user_groupid;

			return md5( preg_replace('|(.+)\#.+?$|is', '$1', $_SERVER['REQUEST_URI']) . $ug );

		}

	}

	

	private function dir( $cache_dir ){



		$dirs = array(  $cache_dir, 

						$cache_dir . '/forum', 

						$cache_dir . '/topic', 

						$cache_dir . '/post', 

						$cache_dir . '/item', 

						$cache_dir . '/item/forum', 

						$cache_dir . '/item/topic', 

						$cache_dir . '/item/post');

		

		$this->mkdir( $dirs );

	}

	

	private function mkdir( $dirs ){

		foreach( $dirs as $dir ){

			wp_mkdir_p($dir);

			wpforo_write_file( $dir . '/index.html' , '' );

			wpforo_write_file( $dir . '/.htaccess' , 'deny from all' );

		}

	}

	

	public function on( $type = 'object_cashe' ){

		if( $type == 'html_cashe' ){

			if( wpforo_feature('output-buffer') && function_exists('ob_start') ){

				return wpforo_feature( 'html_cashe');

			}

			else{

				return false;

			}

		}

		else{

			return wpforo_feature($type);

		}

	}

	

	public function get( $key, $type = 'loop', $template = NULL ){

		

		$template = ( $template ) ? $template : WPF()->current_object['template'];

		$loop_templates = array('forum', 'topic', 'post');

		if( $type == 'loop' && $template ){

			if( $this->exists($key, $template) ){

				if( in_array( $template, $loop_templates) ){

					$cache_file = $this->dir . '/' . $template . '/' . $key;

					$array = wpforo_get_file_content( $cache_file );

					return @unserialize( $array );

				}

			}

		}

	}

	

	public function get_item( $id, $type = 'post' ){

		if( $id ){ $key = $id . '_' . $this->lang;

			if( $this->exists( $key, 'item', $type )){

				$cache_file = $this->dir . '/item/' . $type . '/' . $key;

				$array = wpforo_get_file_content( $cache_file );

				return @unserialize( $array );

			}

		}

	}

	

	public function get_html(){

		$template = WPF()->current_object['template'];

		if( $template == 'forum' ){

			$key = $this->get_key();

			if( $this->exists($key, $template) ){

				$cache_file = $this->dir . '/' . $template . '/' . $key;

				$html = wpforo_get_file_content( $cache_file );

				return $this->filter($html);

			}

		}

		return false;

	}

	

	public function html( $content ){

		if(!$this->on('html_cashe')) return false;

		$template = WPF()->current_object['template'];

		if( $template == 'forum' ){

			$key = $this->get_key();

			$this->create_html( $content, $template, $key );

		}

	}

	

	public function create( $mode = 'loop', $cache = array(), $type = 'post' ){

	

		if(!$this->on('object_cashe')) return false;

		$template = WPF()->current_object['template'];

		if( $template == 'forum' ) { $this->check( $this->dir . '/item/post' ); }

		

		if( $mode == 'loop' && $template ){

			if( $template == 'forum' || $template == 'topic' || $template == 'post'){

				$cache = WPF()->forum->get_cache('forums');

				$this->create_files( $cache, $template );

				$cache = WPF()->topic->get_cache('topics');

				$this->create_files( $cache, $template );

				$cache = WPF()->post->get_cache('posts');

				$this->create_files( $cache, $template );

			}

		}

		elseif( $mode == 'item' && !empty($cache) ){

			$this->create_files( $cache, 'item', $type );

		}

	}

	

	public function create_files( $cache = array(), $template = '', $type = '' ){

		if( !empty($cache) ){

			$type = ( $type ) ? $type . '/' : '' ;

			foreach( $cache as $key => $object ){

				if($template == 'item') $key = $key . '_' . $this->lang;

				if( !$this->exists($key, $template) ){

					$object = serialize($object);

					wpforo_write_file( $this->dir . '/' . $template . '/' . $type . $key , $object );

				}

			}	

		}

	}

	

	public function create_html( $content, $template = '', $key = '' ){

		if( $content ){

			if( !$this->exists($key, $template) ){

				wpforo_write_file( $this->dir . '/' . $template . '/' . $key , $content );

			}

		}

	}



    public function create_custom( $args = array(), $items = array(), $template = 'post', $items_count  = 0 ){

        if(empty($args) || !is_array($args)) return;

        if(empty($items) || !is_array($items)) return;

        $cache = array(); $hach = serialize($args);

	    $object_key = md5( $hach . WPF()->current_user_groupid );

        $cache[$object_key]['items'] = $items;

        $cache[$object_key]['items_count'] = $items_count;

	    $this->create_files( $cache, $template );

    }



	public function filter( $html = '' ){

		//exit();

		$html = preg_replace('|<div[\s\t]*id=\"wpf\-msg\-box\"|is', '<div style="display:none;"', $html);

		return $html;

	}

	

	#################################################################################

	/**

	 * Cleans forum cache

	 *

	 * @since 1.2.1

	 *

	 * @param	integer		Item ID		(e.g.: $topicid or $postid) | (!) ID is 0 on dome actions (e.g.: delete actions)

	 * @param	string		Item Type	(e.g.: 'forum', 'topic', 'post', 'user', 'widget', etc...)

	 * @param   array		Item data as array		

	 *

	 * @return	NULL	

	 */

	 

	public function clean( $id, $template, $item = array() ){

		

		$dirs = array();

		$userid = (isset($item['userid']) && $item['userid']) ? $item['userid'] : 0;

		$postid = (isset($item['postid']) && $item['postid']) ? $item['postid'] : 0;

		$topicid = (isset($item['topicid']) && $item['topicid']) ? $item['topicid'] : 0;

		$forumid = (isset($item['forumid']) && $item['forumid']) ? $item['forumid'] : 0;

		

		if( $template == 'forum' || $template == 'forum-soft' ){

			$id = isset($id) ? $id : $forumid;

			if( $template == 'forum'){

				$dirs = array( $this->dir . '/forum', $this->dir . '/item/forum' );

			}

			if( $id ){

				$file = $this->dir . '/item/forum/' . $id . '_' . $this->lang; $this->clean_file( $file );

			}

		}

		elseif( $template == 'topic' || $template == 'topic-soft' ){

			$id = isset($id) ? $id : $topicid;

			if( $template == 'topic'){

				$dirs = array( $this->dir . '/forum', $this->dir . '/item/forum', $this->dir . '/topic', $this->dir . '/post' );

			}

			if( $template == 'topic-soft' && $forumid ){

				$file = $this->dir . '/item/forum/' . $forumid . '_' . $this->lang; $this->clean_file( $file );

			}

			if( $id ){

				$file = $this->dir . '/item/topic/' . $id . '_' . $this->lang; $this->clean_file( $file );

				$postid = (isset($item['first_postid']) && $item['first_postid']) ? $item['first_postid'] : 0;

				if( $postid ) $file = $this->dir . '/item/post/' . $postid . '_' . $this->lang; $this->clean_file( $file );

			}

            $this->clear_forum_statistic();

		}

		elseif( $template == 'post' || $template == 'post-soft' ){

			$id = isset($id) ? $id : $postid;

			if( $template == 'post'){

				$dirs = array( $this->dir . '/forum', $this->dir . '/topic', $this->dir . '/post' );

			}

			if( $forumid ){

				$file = $this->dir . '/item/forum/' . $forumid . '_' . $this->lang; $this->clean_file( $file );

			}

			if( $topicid ){

				$file = $this->dir . '/item/topic/' . $topicid . '_' . $this->lang; $this->clean_file( $file );

			}

			if( $id ){

				$file = $this->dir . '/item/post/' . $id . '_' . $this->lang; $this->clean_file( $file );

			}

            $this->clear_forum_statistic();

		}

		elseif( $template == 'user' ){

			//no cache//

		}

		elseif( $template == 'loop' ){

			$dirs = array( $this->dir . '/forum', $this->dir . '/topic', $this->dir . '/post' );

		}

		elseif( $template == 'item' ){

			$dirs = array( $this->dir . '/item/post', $this->dir . '/item/topic', $this->dir . '/item/forum' );

		}

		else{

			$dirs = array( $this->dir . '/forum', $this->dir . '/topic', $this->dir . '/post', $this->dir . '/item/post', $this->dir . '/item/topic', $this->dir . '/item/forum' );

		}

		

		if(!empty($dirs)){

			foreach( $dirs as $dir ){ 

				$this->clean_files( $dir ); 

			}

		}

		

	}

	

	public function clean_files( $directory ) {

		$directory_ns = trim( $directory, '/') . '/*';

		$directory_ws = '/' . trim( $directory, '/') . '/*';

		$glob = glob( $directory_ns ); if( empty($glob) ) $glob = glob( $directory_ws );

		foreach( $glob as $item ) {

			if( strpos($item, 'index.html') !== FALSE || strpos($item, '.htaccess') !== FALSE ) continue;

			if( !is_dir($item) ) unlink( $item );

		}

	}

	

	public function clean_file( $file ) {

		if( !is_dir($file) && file_exists($file) ) unlink( $file );

	}

	

	public function exists( $key, $template, $type = '' ){

		$type = ( $type ) ? $type . '/' : '' ;

		if( file_exists( $this->dir . '/' . $template . '/' . $type . $key ) ){

			return true;

		}

		else{

			return false;

		}

	}

	

	public function check( $directory ){

		$filecount = 0;

		if( class_exists('FilesystemIterator') && is_dir($directory) ){

			$fi = new FilesystemIterator( $directory, FilesystemIterator::SKIP_DOTS );

			$filecount = iterator_count($fi);

		}

		if( !$filecount ){

			$directory_ns = trim( $directory, '/') . '/*';

			$directory_ws = '/' . trim( $directory, '/') . '/*';

			$files = glob( $directory_ns ); 

			if( empty($files) ) $files = glob( $directory_ws );

			$filecount = count($files);

		}

		if( $filecount > 1000 ) {

			$this->clean_files( $directory );

		}

	}



	public function clear_forum_statistic(){

        WPF()->db->query("DELETE FROM `" . WPF()->db->options."` WHERE `option_name` LIKE 'wpforo_stat%'" );

    }

}