Starting to move to a MVC pattern

Controller.php

@@ -0,0 +1,22 @@
+<?php
+
+/*
+ * Controller.php
+ */
+
+class Controller {
+    protected $model;
+    protected $view;
+
+    public function __construct($model, $view) {
+        $this->model = $model;
+        $this->view = $view;
+    }
+}
+
+class Auth extends Controller {
+    public $user;
+    function __construct($model, $view) {
+        parent::__construct($model, $view);
+    }
+}

Model.php

@@ -0,0 +1,63 @@
+<?php
+
+/*
+ * Models.php
+ * Contains the definition of super models and other models inherit from that
+ */
+
+namespace Model;
+
+class User {
+    private $userid;
+    private $auth;
+    private $level;
+    private $question;
+    public function __construct($userid) {
+        $this->userid = $userid;
+        $this->auth = false;
+        //fetch initially the level that's stored in DB
+        $this->level = getDBLevel();
+        $this->question = getDBQuestion();
+    }
+    public function get($key) {
+        switch($key) {
+        case 'id':          return $this->userid;
+        case 'level':       return $this->level;
+        case 'question':    return $this->question;
+        default:            return null;
+        }
+    }
+    public function grant() {
+        $this->auth = true;
+    }
+    private function getDBLevel() {
+        $userAccess = mysql_query("SELECT `to` FROM `user_level` WHERE `userid`='{$this->userid}' ORDER BY `id` DESC LIMIT 1") or die(mysql_error());
+        $userAccessArray = mysql_fetch_array($userAccess);
+        $userLevel = $userAccessArray['to'];
+        if(empty($userLevel)):
+		    //then try to find the starting level from the database
+    		$startNodeQuery = mysql_query("SELECT `value` FROM `config` WHERE `key`='start'") or die(mysql_error());
+    		$startNodeArray = mysql_fetch_assoc($startNodeQuery);
+    		if(empty($startNodeArray['value']))
+    			return 1;
+    		else
+    			return $startNodeArray['value'];
+    	endif;
+    	return $userLevel;
+    }
+    private function getDBQuestion() {
+	    $questionQuery = mysql_query("SELECT `url`,`question`,`comments`,`header` FROM `questions` WHERE `level`='{$this->level}' LIMIT 1") or die(mysql_error());
+	    $questionArray = mysql_fetch_assoc($questionQuery);
+    	$question = $questionArray['question'] . "\n" . $questionArray['comments'];
+    	return array(
+    		"question"=>$question,
+    		"header"=>$questionArray['header'],
+    		"comments"=>stripslashes_deep($questionArray['comments']),
+    		"url"=>$questionArray['url']
+    	);
+    }
+}
+
+class Page {
+    public $pageid;
+}

auth.lib.php

@@ -0,0 +1,12 @@
+<?php
+
+/*
+ * Author: Boopathi Rajaa <me@boopathi.in>
+ * Auth.lib.php
+ * A class that provides to implement custom auth logic
+ */
+
+class Auth {
+    function __construct(){
+        $this->auth = false;
+

auth.php

@@ -0,0 +1,56 @@
+<?php
+
+/*
+ * Authentication part.
+ * A function auth - returns true if authentication was successfull
+ * if not, then function error will be called.
+ */
+
+require_once('model.lib.php');
+namespace Auth {
+    function authenticate() {
+
+    }
+};
+
+class Authenticate {
+    public var $userid;
+    function __construct() {
+        $this->userid = null;
+        //call the authenticate method that returns the authenticate variable;
+        $this->authenticate = $this->authenticate(); //true or false only
+        if($this->authenticate == false)
+            $this->error();
+    }
+    function authenticate() {
+        //Write your authenticate method here
+        //Return true if authenticated. Note: It should be strictly true
+
+        //For PragyanCMS authentication
+        return this->pragyanAuth();
+    }
+    public function error() {
+        //This function ll be the callback when authenticate returns false.
+        //You may exit the program here. Not exiting is no harm either.
+        echo "Authentication Failure.";
+        return false;
+    }
+    function pragyanAuth() {
+        ini_set("session.name", "PHPSESSID");
+        ini_set("session.save_path", "/home/boopathi/tmp/sessions");
+
+        session_start();
+
+        if(!isset($_SESSION['userId'])) {
+            echo "Session not set ";
+            return false;
+        }
+        if($_SESSION['userId'] == 0 ) {
+            echo "User Id is 0";
+            return false;
+        }
+        //set the userid if everything is fine.
+        $this->userid = $_SESSION['userId'];
+        return true;
+    }
+}

index.php

@@ -13,22 +13,20 @@
 	exit(1);
 endif;
 
-ini_set("session.name","PHPSESSID");
-ini_set("session.save_path", "/var/www/html/12/cms/uploads/sessions");
-
 header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
 header("Cache-Control: no-store, no-cache, must-revalidate, max-age=0");
 header("Cache-Control: post-check=0, pre-check=0", false);
 header("Pragma: no-cache");
 
-session_start();
-//TODO:
+//Authenticate Section
+
+require_once("./auth.php");
 
-if(!isset($_SESSION['userId'])){
-	header("Location: http://www.pragyan.org/12/events/brainwork/labyrinth/play+login");
-//	$_SESSION["userid"] = rand(5, 100);
+if($auth->auth == false){
+
 }
 
+
 //Set the Constant LABYRINTH
 define("LABYRINTH_CONST", "LABYRINTH APPLICATION");