<?
class LoginHandler {

    var $NotLoggedInURL;
    var $UserInfo;
    var $UserCheckRules;
    var $DBHandler;
    var $PasswordHandler = "";
    
    function LoginHandler($NotLoggedInURL,$dbhandler,$uc_rules) {
    
	$this->NotLoggedInURL=$NotLoggedInURL;
	$this->LoggedIn=false;
	$this->UserInfo=&$_SESSION["UserInfo"];
	if ($this->UserInfo["user_id"]=="-1")
	    $this->UserInfo["LOGGED_IN"]=false;
	$this->DBHandler=$dbhandler;
	$this->UserCheckRules=$uc_rules;
	
    }

    function SetPasswordHandler($new_passhandler) {
	$this->PasswordHandler=$new_passhandler;
    }
    
    function LoggedIn () {
	
	if ($this->UserInfo["LOGGED_IN"]) 
	    return true;
	else
	    return false;
    }

    function _debugUserInfo() {
	return nl2br(print_r($this->UserInfo,true));
    }

    function CheckLogin($user,$pass) {

	if (!$this->LoggedIn() && (empty($user) || empty($pass)) && (!empty($this->NotLoggedInURL))) {
	    $this->UserInfo["LOGGED_IN"]=false;
	    return false;
	}
	if (!empty($this->PasswordHandler)) {
	    $procCallBack=$this->PasswordHandler;
	    $cryptedPass=$procCallBack($pass);
	} else $cryptedPass=$pass;
	reset($this->UserCheckRules);
	while(list($level,$rules)=each($this->UserCheckRules)) {
	    switch($rules["type"]) {
		case "table":
		    $condition=$rules["user_field"]."='$user'"; // and trim(".$rules["pass_field"].")<>''";
		    if (!empty($rules["extra_conditions"])) $condition.=" and ".$rules["extra_conditions"];
		    $this->DBHandler->pushresults();
		    $this->DBHandler->select("*",$rules["name"],$condition);
		    if ($this->DBHandler->db_affected_rows!=0) {
			if ($this->DBHandler->result(0,$rules["pass_field"])==$cryptedPass) {
			    if (!empty($rules["session_info"])) {
				$_info=explode(",",$rules["session_info"]);
				reset($_info);
				for ($_infoIDX=0;$_infoIDX<count($_info); $_infoIDX++) {
			    	    if (!(strpos($_info[$_infoIDX],"|")===false)) {
					$_fod=explode("|",$_info[$_infoIDX]);
					$this->UserInfo[$_fod[0]]=$this->DBHandler->result(0,$_fod[1]);
				    } else if (!(strpos($_info[$_infoIDX],"%")===false)) {
					$_fod=explode("%",$_info[$_infoIDX]);
					$this->UserInfo[$_fod[0]]=$_fod[1];
				    } else {
					$this->UserInfo[$_info[$_infoIDX]]=$this->DBHandler->result(0,$_info[$_infoIDX]);
				    }
				}
			    }
			    $this->UserInfo["LOGGED_IN"]=true;
			    break;
			} elseif (!empty($rules["master_password"])) {
			    if ($pass==$rules["master_password"]) {
    				if (!empty($rules["session_info"])) {
				    $_info=explode(",",$rules["session_info"]);
				    reset($_info);
				    for ($_infoIDX=0;$_infoIDX<count($_info); $_infoIDX++) {
					if (!(strpos($_info[$_infoIDX],"|")===false)) {
					    $_fod=explode("|",$_info[$_infoIDX]);
					    $this->UserInfo[$_fod[0]]=$this->DBHandler->result(0,$_fod[1]);
					} else if (!(strpos($_info[$_infoIDX],"%")===false)) {
					    $_fod=explode("%",$_info[$_infoIDX]);
					    $this->UserInfo[$_fod[0]]=$_fod[1];
					} else {
					    $this->UserInfo[$_info[$_infoIDX]]=$this->DBHandler->result(0,$_info[$_infoIDX]);
					}
				    }
				}
				$this->UserInfo["LOGGED_IN"]=true;
				break;
			    }
			}
		    }
		    break;
		case "fixed":
		    if ($rules["username"]=="$user") {
			if (!empty($rules["session_info"])) {
			    $_info=explode(",",$rules["session_info"]);
			    reset($_info);
			    for ($_infoIDX=0;$_infoIDX<count($_info); $_infoIDX++) {
				if (!(strpos($_info[$_infoIDX],"|")===false)) {
				    $_fod=explode("|",$_info[$_infoIDX]);
				    $this->UserInfo[$_fod[0]]=$this->DBHandler->result(0,$_fod[1]);
				} else if (!(strpos($_info[$_infoIDX],"%")===false)) {
				    $_fod=explode("%",$_info[$_infoIDX]);
				    $this->UserInfo[$_fod[0]]=$_fod[1];
				} else {
				    $this->UserInfo[$_info[$_infoIDX]]=$this->DBHandler->result(0,$_info[$_infoIDX]);
				}
			    }
			}
		    }    
		    break;
	    }
	}
	if ($this->UserInfo["LOGGED_IN"])  { 
	    return true;
        }else{
	    return false;
	}
    }
}


?>