<?php
/*
+--------------------------------------------------------------------------
|   CubeCart 4
|   ========================================
|	CubeCart is a registered trade mark of Devellion Limited
|   Copyright Devellion Limited 2006. All rights reserved.
|   Devellion Limited,
|   5 Bridge Street,
|   Bishops Stortford,
|   HERTFORDSHIRE.
|   CM23 2JU
|   UNITED KINGDOM
|   http://www.devellion.com
|	UK Private Limited Company No. 5323904
|   ========================================
|   Web: http://www.cubecart.com
|   Email: info (at) cubecart (dot) com
|	License Type: CubeCart is NOT Open Source Software and Limitations Apply 
|   Licence Info: http://www.cubecart.com/site/faq/license.php
+--------------------------------------------------------------------------
|	cc_session.php
|   ========================================
|	Front Session Class
+--------------------------------------------------------------------------
*/
class session {

	var $ccUserData;
	var $ccUserBlocked = false;
	
	var $config;
	var $db;
	var $glob;
	var $ini;
	
	function session() {
	#	$this->__construct();
	#}
	
	#function __construct() {
		global $config, $db, $glob, $ini;
		
		$this->config	= $config;
		$this->db		= $db;
		$this->glob		= $glob;
		$this->ini		= $ini;
		
		if (isset($_GET[CC_SESSION_NAME])) {
			$this->set_cc_cookie(CC_SESSION_NAME, $_GET[CC_SESSION_NAME]);
		} else {
			## see if session is still in db
			$query = sprintf("SELECT sessId FROM %sCubeCart_sessions WHERE sessId=%s", $this->glob['dbprefix'], $this->db->mySQLSafe($GLOBALS[CC_SESSION_NAME]));
			
			$results = $this->db->select($query);
			
			## !empty($results[0]['sessId']) critical incase reuslts=true if session DB table has an empty sessionId!!
			if ($results && !empty($results[0]['sessId'])) {
				$data["timeLast"] = $this->db->mySQLSafe(time());
				$data["location"] = $this->db->mySQLSafe(currentPage());
				$update = $this->db->update($this->glob['dbprefix']."CubeCart_sessions", $data, "sessId=".$this->db->mySQLSafe($results[0]['sessId']));
			} else {
				$this->makeSession();
			}
		}
		
		## get all session data and store as class array
		$query = sprintf("SELECT * FROM %1\$sCubeCart_sessions LEFT JOIN %1\$sCubeCart_customer ON %1\$sCubeCart_sessions.customer_id = %1\$sCubeCart_customer.customer_id WHERE sessId = %2\$s", $this->glob['dbprefix'], $this->db->mySQLSafe($GLOBALS[CC_SESSION_NAME]));
		$result = $this->db->select($query);
		// security checks
		
		$client_ip = get_ip_address();
		
		if (!empty($result[0]['ip']) && ($result[0]['ip'] !== $client_ip || $result[0]['browser'] !== $_SERVER['HTTP_USER_AGENT'])) {
			$this->destroySession($GLOBALS[CC_SESSION_NAME]);
		}
		$this->ccUserData = $result[0];
		
		if (empty($result[0]['lang'])) {
			define("LANG_FOLDER", $this->config['defaultLang']);
		} else {
			define("LANG_FOLDER", $result[0]['lang']);
		}
		
		if (empty($result[0]['skin'])) {
			define("SKIN_FOLDER", $this->config['skinDir']);
		} else  {
			define("SKIN_FOLDER", $result[0]['skin']);
		}
	}	

	function destroySession($sessionId) {
		setcookie(CC_SESSION_NAME);
		$data["customer_id"] = '0';
		$update = $this->db->update($this->glob['dbprefix']."CubeCart_sessions", $data,"sessId=".$this->db->mySQLSafe($GLOBALS[CC_SESSION_NAME]));
		return ($update) ? true : false;
	}

	function makeSession() {
		$sessionId = $this->makeSessId();
		$this->set_cc_cookie(CC_SESSION_NAME, $sessionId);
		
		## set session global var because cookie won't show until next page load
		$GLOBALS[CC_SESSION_NAME] = $sessionId;
		
		## insert sessionId into db
		$data["sessId"] 		= 	$this->db->mySQLSafe($sessionId);		
		$timeNow 				= 	$this->db->mySQLSafe(time());
		$data["timeStart"] 		= 	$timeNow;	
		$data["timeLast"] 		= 	$timeNow;
		$data["customer_id"] 	= 	0;
		$data["ip"] 			= 	$this->db->mySQLSafe(get_ip_address());
		$data["browser"] 		= 	$this->db->mySQLSafe($_SERVER['HTTP_USER_AGENT']);
		
		$insert = $this->db->insert($this->glob['dbprefix']."CubeCart_sessions", $data);
		$this->deleteOldSessions();
	}
	
	function deleteOldSessions() {
		$expiredSessTime = time() - $this->config['sqlSessionExpiry'];
		/* Stock on add to basket possibly for future
		$this->reduce();
		*/
		## delete sessions older than time set in config file
		$delete = $this->db->delete($this->glob['dbprefix']."CubeCart_sessions", "timeLast<".$expiredSessTime);
	}

	function authenticate($user, $pass, $remember = false) {
		$user = sanitizeVar($user);
		$pass = sanitizeVar($pass);
		$query = "SELECT customer_id FROM ".$this->glob['dbprefix']."CubeCart_customer WHERE email=".$this->db->mySQLSafe($user)." AND password = ".$this->db->mySQLSafe(md5($pass))." AND type>0";
		
		$customer = $this->db->select($query);
		
		if (!$customer) {
			if ($this->db->blocker($user, $this->ini['bfattempts'], $this->ini['bftime'], false, 'f')) {
				$this->ccUserBlocked = true; 	
			}
		} else if ($customer[0]['customer_id']>0) {
		
			// remember user for as long as sessions are allowed in DB
			if ($remember == true) {
				$this->set_cc_cookie(CC_SESSION_NAME, $GLOBALS[CC_SESSION_NAME], $this->config['sqlSessionExpiry']);	
			}
			
			if ($this->db->blocker($user, $this->ini['bfattempts'], $this->ini['bftime'], true, 'f')) {
				$this->ccUserBlocked = true;
			} else {
				$data["customer_id"] = $customer[0]['customer_id'];
				$update = $this->db->update($this->glob['dbprefix']."CubeCart_sessions", $data,"sessId=".$this->db->mySQLSafe($GLOBALS[CC_SESSION_NAME]));
				
				## "login","reg","unsubscribe","forgotPass" etc..
				$redir = sanitizeVar(urldecode($_GET['redir']));
				
				## prevent phishing attacks
				if (eregi("^http://|^https://",$redir) && !eregi("^".$this->glob['storeURL']."|^".$this->config['storeURL_SSL'], $redir)) {
					die("Redirect URL not allowed!");
				}
				if (isset($_GET['redir']) && !empty($_GET['redir']) && !eregi("logout|login|forgotPass|changePass", $redir)) {
					httpredir($redir);
				} else {
					httpredir($GLOBALS['rootRel']."index.php");
				}
			}
		} else if (eregi("step1", urldecode($_GET['redir']))) {
			httpredir($GLOBALS['rootRel']."index.php?_g=co&_a=step1");	
		} 
	}
	
	
	function makeSessId() {
		session_start();
		session_regenerate_id(true);
		return session_id();
	}
	
	function get_cookie_domain($domain) {
		$cookie_domain = str_replace(array('http://', 'https://', 'www.'), '', strtolower($domain));
		$cookie_domain = explode("/", $cookie_domain);
		$cookie_domain = explode(":", $cookie_domain[0]);
		return '.'.$cookie_domain[0];
	}
	
	function set_cc_cookie($name, $value, $length = '') {
		## only set the cookie if the visitor is not a spider or search engine system is off
		if (!$this->user_is_search_engine() || $this->config['sef'] == false) {
			$expires = ($length>0) ? (time()+$length) : 0;
			setcookie($name, $value, $expires, $GLOBALS['rootRel']);
		}
	}
	
	function user_is_search_engine() {
		$user_agent = strtolower($_SERVER['HTTP_USER_AGENT']);
		$spider_flag = false;
		if (($user_agent != '') && (strtolower($user_agent) != 'null') && (strlen(trim($user_agent)) > 0)) {
			$spiders = file(CC_ROOT_DIR.'/spiders.txt');
			foreach ($spiders as $spider) {
				if (($spider != '') && (strtolower($spider) != 'null') && (strlen(trim($spider)) > 0)) {
					if (strpos($user_agent, trim($spider)) !== false) {
						$spider_flag = TRUE;
						break;
					}
				}
			}
		}
		return $spider_flag;
	}
}

?>