<?
	class acl
	{		
		public function permission_menus($permission,$access_module,$stat_id,$status)
		{																				
			$page_status = $status[$stat_id]['active'];																																
						
			$avail = false;
			
			if($page_status == 1)																																												
				$avail = self::check_acl($permission,$access_module);					
												
			return $avail;
		}
		
		public function permission($page)
		{								


			$access = $_SESSION['user']['access'];											

			$permission = $_SESSION['page'][$page]['permission'];																										

			$current_page_status = $_SESSION['page'][$page]['status'];																										

			$page_status = $_SESSION['status']['modules_sub'][$current_page_status]['active'];


			$avail = false;


			/*if($page == 'setup_templates'){
				var_dump('setup_templates');
			}*/

			if($page_status == 1)
				$avail = self::check_acl($permission,$access);					

			return $avail;
		}
	
		public function check_acl($a,$b)
		{										
			$a_length = strlen($a);
			$b_length = strlen($b);						

			if($a_length > $b_length)
				return false;
			
			if(empty($a))
				return false;

			if(empty($b))
				return false;
																
			$d = $b;			
				
			$b = substr($b,$b_length - $a_length,$b_length);
			$c = $b;			
				
			$b_length = strlen($b);
			
			if($a_length != $b_length)
				return false;
				
			$sum = "";
								
			for($i = 0; $i < $a_length; $i++)
			{
				$a_pos = substr($a,$i,1);
				$b_pos = substr($b,$i,1);			
				
				if(($a_pos == 1) && ($b_pos == $a_pos))
					$sum .= "1";
				else
					$sum .= "0";				
										
			}			
															
			if($sum != $a)
				return false;
			else
				return true;
		}		
		
		public function setup_acl($perms)
		{
			$access = 0;
			
			$perm_array = array();
			
			$max_length = 0;
			$max_value = 0;
											
			foreach($perms AS $perm)
			{
				$str_length = strlen($perm);
				
				if($str_length > $max_length)
				{
					$max_length = $str_length;
					$max_value = $perm;				
				}
			}		
			
			$new_perm = array();
	
			foreach($perms AS $perm)	
				if($perm != $max_value)
					$new_perm[] = $perm;
							
			foreach($new_perm AS $perm)
			{
				$length_perm = strlen($perm);
				$replace = $max_length - $length_perm;
				
				for($i = 0; $i < $length_perm; $i++)
				{
					$replacing = $max_value[$replace + $i ];
					
					if(($replacing != "1") && ($perm[$i] == "1"))
						$max_value[$replace + $i ] = "1";
				}
			}
			
			return $max_value;		
		}		

		public function perm_client($page)
		{					
			
						
			$access = $_SESSION['user']['access'];				
			$client_access = $_SESSION['client_info']['access'];				
			$client_access = $_SESSION['user']['access'];
			
			$a_length = strlen($access);
			$b_length = strlen($client_access);						
						
			if($a_length > $b_length)
			{	
				$difference = $a_length - $b_length;
				
				$extra = "";
				
				for($i =0 ; $i < $difference; $i++)
					$extra .= "0";
				
				$client_access = $extra.$client_access;						
			}
			else if($a_length < $b_length)
			{
				$difference = $b_length - $a_length;
				
				$extra = "";
				
				for($i =0 ; $i < $difference; $i++)
					$extra .= "0";
				
				$access = $extra.$access;				
			}

			$get_modules = "
			SELECT permission
			FROM clients_modules_sub
			WHERE page = '$page'
			LIMIT 1";
			$permission = $conn->getOne($get_modules);
							
			$client_avail = self::check_acl($permission,$client_access);					
									
			$avail = "no";
			
			if($client_avail)
			{				
				$avail = self::check_acl($permission,$access);					
			}									
			
			return $avail;	
		}																	
	}

?>