Session 클래스 수정.

- Session클래스 내에서 global setter, getter 재정의
- Session클래스에서 static 함수로 getUserID, getUserGrade 재정의
- 내부 서버에서 getUserID, getUserGrade를 쓰던 것 Session 클래스로 통일
- SESSION.php가 requireLogin 기능을 수행하던것을 Session의 static 함수로 통합

src/sammo/Session.php

@@ -1,10 +1,45 @@
 <?php
 namespace sammo;
 
-require(__dir__.'/../vendor/autoload.php');
-
-
+if(!defined('ROOT')){
+    define('ROOT', '..');
+}
 class Session {
+
+    const PROTECTED_NAMES = [
+        'ip'=>true,
+        'time'=>true, 
+        'userID'=>true, 
+        'userName'=>true, 
+        'userGrade'=>true, 
+        'writeClosed'=>true
+    ];
+
+    private $writeClosed = false;
+
+    /**
+     * @return \sammo\Session
+     */
+    public static function Instance(){
+        static $inst = null;
+        if($inst === null){
+            $inst = new Session();
+        }
+        return $inst;
+    }
+
+    /**
+     * @return \sammo\Session
+     */
+    public static function requireLogin(string $path = ROOT){
+        $session = Session::Instance();
+        if(!$session->isLoggedIn()){
+            header('Location:'.$path);
+            die();
+        }
+        return $session;
+    }
+
     public function __construct() {
         //session_cache_limiter('nocache, must_revalidate');
 
@@ -21,52 +56,91 @@ class Session {
         }
     }
 
-    public function writeClose(){
-        session_write_close();
+    /**
+     * @return \sammo\Session
+     */
+    public function setReadOnly(){
+        if(!$this->writeClosed){
+            session_write_close();
+            $this->writeClosed = true;
+        }        
+        return $this;
     }
 
     public function __set(string $name, mixed $value){
+        if(key_exists($key, self::PROTECED_NAMES)){
+            trigger_error("{$name}은 외부에서 쓰기 금지된 Session 변수입니다.", E_USER_NOTICE);
+            return;
+        }
+
+        $this->set($name, $value);        
+    }
+
+    private function set(string $name, mixed $value){
         if($value === null){
             unset($_SESSION[$name]);
         }
         else{
             $_SESSION[$name] = $value;
         }
-        
     }
 
     public function __get(string $name){
+        return $this->get($name);
+    }
+
+    private function get(string $name){
         return util::array_get($_SESSION[$name]);
     }
 
-    public function set($key, $val) {
-        $_SESSION[$key] = $val;
-    }
-
-    public function get($key) {
-        return util::array_get($_SESSION[$key]);
-    }
-
-    public function login($noMember, $idMember, $grade) {
-        $_SESSION['noMember'] = $noMember;
-        $_SESSION['p_id'] = $idMember;
-        $_SESSION['ip'] = util::get_client_ip(true);
-        $_SESSION['time'] = time();
-        $_SESSION['userGrade'] = $grade;
+    public function login(int $userID, string $userName, int $grade) {
+        $this->set('userID', $userID);
+        $this->set('userName', $userName);
+        $this->set('ip', util::get_client_ip(true));
+        $this->set('time', time());
+        $this->set('userGrade', $grade);
     }
 
     public function logout() {
-        unset($_SESSION['noMember']);
-        unset($_SESSION['p_id']);
-        unset($_SESSION['userGrade']);
+        $this->set('userID', null);
+        $this->set('userName', null);
+        $this->set('userGrade', null);
+        $this->set('time', time());
     }
 
-    public function getGrade() {
-        return $_SESSION['userGrade'];
+    /**
+     * 로그인 유저의 전역 grade를 받아옴
+     * @return int|null
+     */
+    public static function getUserGrade(bool $requireLogin = false, string $exitPath = ROOT){
+        if($requireLogin){
+            $obj = self::requireLogin($exitPath);
+        }
+        else{
+            $obj = self::Instance();
+        }
+        
+        return $obj->userGrade;
+    }
+
+    /** 
+     * 로그인한 유저의 전역 id(숫자)를 받아옴 
+     *
+     * @return int|null 
+     */
+    public static function getUserID(bool $requireLogin = false, string $exitPath = ROOT){
+        if($requireLogin){
+            $obj = self::requireLogin($exitPath);
+        }
+        else{
+            $obj = self::Instance();
+        }
+        
+        return $obj->userID;
     }
 
     public function isLoggedIn() {
-        if($this->noMember()){
+        if($this->userID){
             return true;
         }
         else{
@@ -74,10 +148,6 @@ class Session {
         }
     }
 
-    public function noMember() {
-        return $this->get('noMember');
-    }
-
     public function __destruct() {
     }
 }