<?php

if(!defined('IN_DZZ')) {
	exit('Access Denied');
}

class dzz_app extends dzz_base{


	var $mem = null;

	var $session = null;

	var $config = array();

	var $var = array();

	var $cachelist = array();

	var $init_db = true;
	var $init_setting = true;
	var $init_user = true;
	var $init_session = true;
	var $init_cron = true;
	var $init_misc = true;
	var $init_mobile = false;

	var $initated = false;

	var $superglobal = array(
		'GLOBALS' => 1,
		'_GET' => 1,
		'_POST' => 1,
		'_REQUEST' => 1,
		'_COOKIE' => 1,
		'_SERVER' => 1,
		'_ENV' => 1,
		'_FILES' => 1,
	);

	static function &instance() {
		static $object;
		if(empty($object)) {
			$object = new self();
		}
		return $object;
	}

	public function __construct() {
		$this->_init_env();
		$this->_init_config();
		$this->_init_input();
		$this->_init_output();
	}

	public function init() {
		
		if(!$this->initated) {
			$this->_init_db();
			$this->_init_setting();
			$this->_init_user();
			$this->_init_session();
			$this->_init_cron();
			$this->_init_misc();
		}
		$this->initated = true;
	}

	private function _init_env() {
	
		error_reporting(E_ERROR);
		if(PHP_VERSION < '5.3.0') {
			set_magic_quotes_runtime(0);
		}

		define('MAGIC_QUOTES_GPC', function_exists('get_magic_quotes_gpc') && get_magic_quotes_gpc());
		define('ICONV_ENABLE', function_exists('iconv'));
		define('MB_ENABLE', function_exists('mb_convert_encoding'));
		define('EXT_OBGZIP', function_exists('ob_gzhandler'));

		define('TIMESTAMP', time());
		$this->timezone_set();

		if(!defined('DZZ_CORE_FUNCTION') && !@include(DZZ_ROOT.'./core/function/function_core.php')) {
			exit('function_core.php is missing');
		}

		if(function_exists('ini_get')) {
			$memorylimit = @ini_get('memory_limit');
			if($memorylimit && return_bytes($memorylimit) < 33554432 && function_exists('ini_set')) {
				ini_set('memory_limit', '128m');
			}
		}

		define('IS_ROBOT', checkrobot());
		

		foreach ($GLOBALS as $key => $value) {
			if (!isset($this->superglobal[$key])) {
				$GLOBALS[$key] = null; unset($GLOBALS[$key]);
			}
		}

		global $_G;
		$_G = array(
			'uid' => 0,
			'username' => '',
			'adminid' => 0,
			'groupid' => 1,
			'sid' => '',
			'formhash' => '',
			'connectguest' => 0,
			'timestamp' => TIMESTAMP,
			'starttime' => microtime(true),
			'clientip' => $this->_get_client_ip(),
			'referer' => '',
			'charset' => '',
			'gzipcompress' => '',
			'authkey' => '',
			'timenow' => array(),
			

			'PHP_SELF' => '',
			'siteurl' => '',
			'siteroot' => '',
			'siteport' => '',


			'config' => array(),
			'setting' => array(),
			'member' => array(),
			'group' => array(),
			'cookie' => array(),
			'style' => array(),
			'cache' => array(),
			'session' => array(),
			'lang' => array(),

			'rssauth' => '',

			
		);
		$_G['PHP_SELF'] = dhtmlspecialchars($this->_get_script_url());
		$_G['basescript'] = CURSCRIPT.'php';
		$_G['basefilename'] = basename($_G['PHP_SELF']);
		$sitepath = substr($_G['PHP_SELF'], 0, strrpos($_G['PHP_SELF'], '/'));
		if(defined('IN_API')) {
			$sitepath = preg_replace("/\/api\/?.*?$/i", '', $sitepath);
		} elseif(defined('IN_ARCHIVER')) {
			$sitepath = preg_replace("/\/archiver/i", '', $sitepath);
		}
		$_G['isHTTPS'] = ($_SERVER['HTTPS'] && strtolower($_SERVER['HTTPS']) != 'off') ? true : false;
		$_G['siteurl'] = dhtmlspecialchars('http'.($_G['isHTTPS'] ? 's' : '').'://'.$_SERVER['HTTP_HOST'].$sitepath.'/');

		$url = parse_url($_G['siteurl']);
		$_G['siteroot'] = isset($url['path']) ? $url['path'] : '';
		$_G['siteport'] = empty($_SERVER['SERVER_PORT']) || $_SERVER['SERVER_PORT'] == '80' || $_SERVER['SERVER_PORT'] == '443' ? '' : ':'.$_SERVER['SERVER_PORT'];

		if(defined('SUB_DIR')) {
			$_G['siteurl'] = str_replace(SUB_DIR, '/', $_G['siteurl']);
			$_G['siteroot'] = str_replace(SUB_DIR, '/', $_G['siteroot']);
		}
		$_G['browser']=helper_browser::getbrowser();
		$_G['platform']=helper_browser::getplatform();
		$this->var = & $_G;

	}

	private function _get_script_url() {
		if(!isset($this->var['PHP_SELF'])){
			$scriptName = basename($_SERVER['SCRIPT_FILENAME']);
			if(basename($_SERVER['SCRIPT_NAME']) === $scriptName) {
				$this->var['PHP_SELF'] = $_SERVER['SCRIPT_NAME'];
			} else if(basename($_SERVER['PHP_SELF']) === $scriptName) {
				$this->var['PHP_SELF'] = $_SERVER['PHP_SELF'];
			} else if(isset($_SERVER['ORIG_SCRIPT_NAME']) && basename($_SERVER['ORIG_SCRIPT_NAME']) === $scriptName) {
				$this->var['PHP_SELF'] = $_SERVER['ORIG_SCRIPT_NAME'];
			} else if(($pos = strpos($_SERVER['PHP_SELF'],'/'.$scriptName)) !== false) {
				$this->var['PHP_SELF'] = substr($_SERVER['SCRIPT_NAME'],0,$pos).'/'.$scriptName;
			} else if(isset($_SERVER['DOCUMENT_ROOT']) && strpos($_SERVER['SCRIPT_FILENAME'],$_SERVER['DOCUMENT_ROOT']) === 0) {
				$this->var['PHP_SELF'] = str_replace('\\','/',str_replace($_SERVER['DOCUMENT_ROOT'],'',$_SERVER['SCRIPT_FILENAME']));
				$this->var['PHP_SELF'][0] != '/' && $this->var['PHP_SELF'] = '/'.$this->var['PHP_SELF'];
			} else {
				system_error('request_tainting');
			}
		}
		return $this->var['PHP_SELF'];
	}

	private function _init_input() {
		if (isset($_GET['GLOBALS']) ||isset($_POST['GLOBALS']) ||  isset($_COOKIE['GLOBALS']) || isset($_FILES['GLOBALS'])) {
			system_error('request_tainting');
		}

		if(MAGIC_QUOTES_GPC) {
			$_GET = dstripslashes($_GET);
			$_POST = dstripslashes($_POST);
			$_COOKIE = dstripslashes($_COOKIE);
		}

		$prelength = strlen($this->config['cookie']['cookiepre']);
		foreach($_COOKIE as $key => $val) {
			if(substr($key, 0, $prelength) == $this->config['cookie']['cookiepre']) {
				$this->var['cookie'][substr($key, $prelength)] = $val;
			}
		}


		if($_SERVER['REQUEST_METHOD'] == 'POST' && !empty($_POST)) {
			$_GET = array_merge($_GET, $_POST);
		}

		if(isset($_GET['page'])) {
			$_GET['page'] = rawurlencode($_GET['page']);
		}
		if(isset($_GET['mod'])){
			$_GET['mod'] = (str_replace(array('<','>',".","%","'",'"','}','{',',','/','\\'),'',$_GET['mod']));
		}
		if(isset($_GET['op'])){
			$_GET['op'] = (str_replace(array('<','>',".","%","'",'"','}','{',',','/','\\'),'',$_GET['op']));
		}
		if(!(!empty($_GET['handlekey']) && preg_match('/^\w+$/', $_GET['handlekey']))) {
			unset($_GET['handlekey']);
		}

		if(!empty($this->var['config']['input']['compatible'])) {
			foreach($_GET as $k => $v) {
				$this->var['gp_'.$k] = daddslashes($v);
			}
		}

		$this->var['mod'] = empty($_GET['mod']) ? '' : dhtmlspecialchars($_GET['mod']);
		$this->var['op'] = empty($_GET['op']) ? '' : dhtmlspecialchars($_GET['op']);
		$this->var['inajax'] = empty($_GET['inajax']) ? 0 : (empty($this->var['config']['output']['ajaxvalidate']) ? 1 : ($_SERVER['REQUEST_METHOD'] == 'GET' && $_SERVER['HTTP_X_REQUESTED_WITH'] == 'XMLHttpRequest' || $_SERVER['REQUEST_METHOD'] == 'POST' ? 1 : 0));
		$this->var['page'] = empty($_GET['page']) ? 1 : max(1, intval($_GET['page']));
		$this->var['sid'] = $this->var['cookie']['sid'] = isset($this->var['cookie']['sid']) ? dhtmlspecialchars($this->var['cookie']['sid']) : '';

		if(empty($this->var['cookie']['saltkey'])) {
			$this->var['cookie']['saltkey'] = random(8);
			dsetcookie('saltkey', $this->var['cookie']['saltkey'], 86400 * 30, 1, 1);
		}
		$this->var['authkey'] = md5($this->var['config']['security']['authkey'].$this->var['cookie']['saltkey']);

	}

	private function _init_config() {

		$_config = array();
		
		@include DZZ_ROOT.'./core/config/config.php';
		
		if(empty($_config)) {
			if(!file_exists(DZZ_ROOT.'./data/install.lock')) {
				header('location: install');
				exit;
			} else {
				system_error('config_notfound');
			}
		}

		if(empty($_config['security']['authkey'])) {
			$_config['security']['authkey'] = md5($_config['cookie']['cookiepre'].$_config['db'][1]['dbname']);
		}

		if(empty($_config['debug'])) {
			define('DZZ_DEBUG', false);
			error_reporting(0);
		} elseif($_config['debug'] === 1 || $_config['debug'] === 2 || !empty($_REQUEST['debug']) && $_REQUEST['debug'] === $_config['debug']) {
			define('DZZ_DEBUG', true);
			error_reporting(E_ERROR);
			if($_config['debug'] === 2) {
				error_reporting(E_ALL);
			}
		} else {
			define('DZZ_DEBUG', false);
			error_reporting(0);
		}
		define('STATICURL', !empty($_config['output']['staticurl']) ? $_config['output']['staticurl'] : 'static/');
		$this->var['staticurl'] = STATICURL;

		$this->config = & $_config;
		$this->var['config'] = & $_config;

		if(substr($_config['cookie']['cookiepath'], 0, 1) != '/') {
			$this->var['config']['cookie']['cookiepath'] = '/'.$this->var['config']['cookie']['cookiepath'];
		}
		$this->var['config']['cookie']['cookiepre'] = $this->var['config']['cookie']['cookiepre'].substr(md5($this->var['config']['cookie']['cookiepath'].'|'.$this->var['config']['cookie']['cookiedomain']), 0, 4).'_';


	}

	private function _init_output() {

		if($this->config['security']['urlxssdefend'] && $_SERVER['REQUEST_METHOD'] == 'GET' && !empty($_SERVER['REQUEST_URI'])) {
			$this->_xss_check();
		}

		if($this->config['security']['attackevasive'] && (!defined('CURSCRIPT') || !in_array($this->var['mod'], array('seccode', 'secqaa', 'swfupload')) && !defined('DISABLEDEFENSE'))) {
			require_once libfile('function/security');
		}

		if(!empty($_SERVER['HTTP_ACCEPT_ENCODING']) && strpos($_SERVER['HTTP_ACCEPT_ENCODING'], 'gzip') === false) {
			$this->config['output']['gzip'] = false;
		}

		$allowgzip = $this->config['output']['gzip'] && empty($this->var['inajax']) && EXT_OBGZIP;
		setglobal('gzipcompress', $allowgzip);

		if(!ob_start($allowgzip ? 'ob_gzhandler' : null)) {
			ob_start();
		}

		setglobal('charset', $this->config['output']['charset']);
		define('CHARSET', $this->config['output']['charset']);
		if($this->config['output']['forceheader']) {
			@header('Content-Type: text/html; charset='.CHARSET);
		}

	}

	public function reject_robot() {
		if(IS_ROBOT) {
			exit(header("HTTP/1.1 403 Forbidden"));
		}
	}

	private function _xss_check() {
		
		static $check = array('"', '>', '<', '\'', 'CONTENT-TRANSFER-ENCODING');
      
		if($_SERVER['REQUEST_METHOD'] == 'GET' ) {
			$temp = $_SERVER['REQUEST_URI'];
		} elseif(empty ($_GET['formhash'])) {
			$temp = $_SERVER['REQUEST_URI'].file_get_contents('php://input');
		} else {
			$temp = '';
		}

		if(!empty($temp)) {
			$temp = strtoupper(urldecode(urldecode($temp)));
			foreach ($check as $str) {
				if(strpos($temp, $str) !== false) {
					system_error('request_tainting');
				}
			}
		}

		return true;
	}

	private function _get_client_ip() {
		$ip = $_SERVER['REMOTE_ADDR'];
		if (isset($_SERVER['HTTP_CLIENT_IP']) && preg_match('/^([0-9]{1,3}\.){3}[0-9]{1,3}$/', $_SERVER['HTTP_CLIENT_IP'])) {
			$ip = $_SERVER['HTTP_CLIENT_IP'];
		} elseif(isset($_SERVER['HTTP_X_FORWARDED_FOR']) AND preg_match_all('#\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}#s', $_SERVER['HTTP_X_FORWARDED_FOR'], $matches)) {
			foreach ($matches[0] AS $xip) {
				if (!preg_match('#^(10|172\.16|192\.168)\.#', $xip)) {
					$ip = $xip;
					break;
				}
			}
		}
		return $ip;
	}

	private function _init_db() {
		if($this->init_db) {
			$driver = function_exists('mysql_connect') ? 'db_driver_mysql' : 'db_driver_mysqli';
			if(getglobal('config/db/slave')) {
				$driver = function_exists('mysql_connect') ? 'db_driver_mysql_slave' : 'db_driver_mysqli_slave';
			}
			DB::init($driver, $this->config['db']);
		}
	}

	private function _init_session() {

		$sessionclose = !empty($this->var['setting']['sessionclose']);
		$this->session = $sessionclose ? new dzz_session_close() : new dzz_session();

		if($this->init_session)	{
			$this->session->init($this->var['cookie']['sid'], $this->var['clientip'], $this->var['uid']);
			$this->var['sid'] = $this->session->sid;
			$this->var['session'] = $this->session->var;

			if(!empty($this->var['sid']) && $this->var['sid'] != $this->var['cookie']['sid']) {
				dsetcookie('sid', $this->var['sid'], 86400);
			}

			if($this->session->isnew) {
				if(ipbanned($this->var['clientip'])) {
					$this->session->set('groupid', 6);
				}
			}

			if($this->session->get('groupid') == 6) {
				$this->var['member']['groupid'] = 6;
				sysmessage('user_banned');
			}

			if($this->var['uid'] && !$sessionclose && ($this->session->isnew || ($this->session->get('lastactivity') + 600) < TIMESTAMP)) {
				$this->session->set('lastactivity', TIMESTAMP);
				if($this->session->isnew) {
					if($this->var['member']['lastip'] && $this->var['member']['lastvisit']) {
						dsetcookie('lip', $this->var['member']['lastip'].','.$this->var['member']['lastvisit']);
					}
					
					C::t('user_status')->update($this->var['uid'], array('lastip' => $this->var['clientip'], 'lastvisit' => TIMESTAMP));
				}
			}
		}
	}

	private function _init_user() {
		if($this->init_user) {
			if($auth = getglobal('auth', 'cookie')) {
				$auth = daddslashes(explode("\t", authcode($auth, 'DECODE')));
			}
			list($dzz_pw, $dzz_uid) = empty($auth) || count($auth) < 2 ? array('', '') : $auth;

			if($dzz_uid) {
				$user = getuserbyuid($dzz_uid, 1);
			}
			
			if(!empty($user) && $user['password'] == $dzz_pw && ($user['status']<1 || $user['uid']==1)) {//加上判断用户是否被停用
				if(isset($user['_inarchive'])) {
					C::t('user_archive')->move_to_master($dzz_uid);
				}
				$this->var['member'] = $user;
			} else {
				$user = array();
				$this->_init_guest();
			}

			

			$this->cachelist[] = 'usergroup_'.$this->var['member']['groupid'];
			

		} else {
			$this->_init_guest();
		}
		setglobal('groupid', getglobal('groupid', 'member'));
		!empty($this->cachelist) && loadcache($this->cachelist);
		if($this->var['member'] && $this->var['group']['radminid'] == 0 && $this->var['member']['adminid'] > 0 && $this->var['member']['groupid'] != $this->var['member']['adminid'] && !empty($this->var['cache']['admingroup_'.$this->var['member']['adminid']])) {
			$this->var['group'] = array_merge($this->var['group'], $this->var['cache']['admingroup_'.$this->var['member']['adminid']]);
		}
		

		if(empty($this->var['cookie']['lastvisit'])) {
			$this->var['member']['lastvisit'] = TIMESTAMP - 3600;
			dsetcookie('lastvisit', TIMESTAMP - 3600, 86400 * 30);
		} else {
			$this->var['member']['lastvisit'] = $this->var['cookie']['lastvisit'];
		}

		setglobal('uid', getglobal('uid', 'member'));
		setglobal('username', getglobal('username', 'member'));
		setglobal('adminid', getglobal('adminid', 'member'));
		setglobal('groupid', getglobal('groupid', 'member'));
		
	}

	private function _init_guest() {
		$username = '';
		$groupid = 7;
		
		setglobal('member', array( 'uid' => 0, 'username' => $username, 'adminid' => 0, 'groupid' => $groupid, 'credits' => 0, 'timeoffset' => 9999));
	}

	private function _init_cron() {
		$ext = empty($this->config['remote']['on']) || empty($this->config['remote']['cron']) || APPTYPEID == 200;
		if($this->init_cron && $this->init_setting && $ext) {
			if($this->var['cache']['cronnextrun'] <= TIMESTAMP) {
				dzz_cron::run();
			}
		}
	}

	private function _init_misc() {
		if(!$this->init_misc) {
			return false;
		}
		lang('core');

		if($this->init_setting && $this->init_user) {
			if(!isset($this->var['member']['timeoffset']) || $this->var['member']['timeoffset'] == 9999 || $this->var['member']['timeoffset'] === '') {
				$this->var['member']['timeoffset'] = $this->var['setting']['timeoffset'];
			}
		}

		$timeoffset = $this->init_setting ? $this->var['member']['timeoffset'] : $this->var['setting']['timeoffset'];
		$this->var['timenow'] = array(
			'time' => dgmdate(TIMESTAMP),
			'offset' => $timeoffset >= 0 ? ($timeoffset == 0 ? '' : '+'.$timeoffset) : $timeoffset
		);
		$this->timezone_set($timeoffset);

		$this->var['formhash'] = formhash();
		define('FORMHASH', $this->var['formhash']);

		if($this->init_user) {
			$allowvisitflag = in_array(CURSCRIPT, array('user')) || defined('ALLOWGUEST') && ALLOWGUEST;
		
			if(isset($this->var['member']['status']) && $this->var['member']['status'] == -1 && !$allowvisitflag) {
				showmessage('user_banned');
			}
		}

		if(isset($this->var['setting']['ipaccess']) && $this->var['setting']['ipaccess'] && !ipaccess($this->var['clientip'], $this->var['setting']['ipaccess'])) {
			showmessage('user_banned');
		}

		if($this->var['setting']['bbclosed']) {
			if($this->var['member']['adminid']==1) { //系统管理员允许访问
			} elseif(in_array(CURSCRIPT, array('admin', 'user', 'api')) || defined('ALLOWGUEST') && ALLOWGUEST) {
			} else {
				$closedreason = C::t('setting')->fetch('closedreason');
				$closedreason = str_replace(':', '&#58;', $closedreason);
				dheader("Location: user.php?mod=logging&action=login");
				
			}
		}
		if(isset($this->var['setting']['nocacheheaders']) && $this->var['setting']['nocacheheaders']) {
			@header("Expires: -1");
			@header("Cache-Control: no-store, private, post-check=0, pre-check=0, max-age=0", FALSE);
			@header("Pragma: no-cache");
		}

		
		
		$lastact = TIMESTAMP."\t".dhtmlspecialchars(basename($this->var['PHP_SELF']))."\t".dhtmlspecialchars($this->var['mod']);
		dsetcookie('lastact', $lastact, 86400);
		setglobal('currenturl_encode', base64_encode('http://'.$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI']));
	}

	private function _init_setting() {
		if($this->init_setting) {
			if(empty($this->var['setting'])) {
				$this->cachelist[] = 'setting';
			}
			if(!isset($this->var['cache']['cronnextrun'])) {
				$this->cachelist[] = 'cronnextrun';
			}
		}
	
		!empty($this->cachelist) && loadcache($this->cachelist);

		if(!is_array($this->var['setting'])) {
			$this->var['setting'] = array();
		}
		if($ismobile=helper_browser::ismobile()) define('IN_MOBILE',$ismobile);
		define('VERHASH',isset($this->var['setting']['verhash'])?$this->var['setting']['verhash']:random(3));
	}

	public function timezone_set($timeoffset = 0) {
		if(function_exists('date_default_timezone_set')) {
			@date_default_timezone_set('Etc/GMT'.($timeoffset > 0 ? '-' : '+').(abs($timeoffset)));
		}
	}
}

?>