From 07f5140771388c9e0c8a99b0dd2e5d950bdb173b Mon Sep 17 00:00:00 2001
From: Yuchen Pei <hi@ypei.me>
Date: Thu, 14 Oct 2021 15:16:42 +1100
Subject: moving h-source subdir out.

---
 admin/Library/Users/CheckAdmin.php | 369 +++++++++++++++++++++++++++++++++++++
 1 file changed, 369 insertions(+)
 create mode 100755 admin/Library/Users/CheckAdmin.php

(limited to 'admin/Library/Users/CheckAdmin.php')

diff --git a/admin/Library/Users/CheckAdmin.php b/admin/Library/Users/CheckAdmin.php
new file mode 100755
index 0000000..9a47b16
--- /dev/null
+++ b/admin/Library/Users/CheckAdmin.php
@@ -0,0 +1,369 @@
+<?php
+
+// All EasyGiant code is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
+// See COPYRIGHT.txt and LICENSE.txt.
+
+if (!defined('EG')) die('Direct access not allowed!');
+
+class Users_CheckAdmin {
+
+	public $status = array();
+
+	protected $_sessionsTable; //table containing all the sessions
+	protected $_usersTable;	//table containing all the users
+	protected $_groupsTable; //table containing all the groups
+	protected $_manyToManyTable; //table for many to many relationships
+	protected $_accessesTable; //table containing all the accesses to admin side
+	protected $uid = null;
+	protected $_token = null; //token used in order to defense against CSRF (cross sire request forgeries)
+	protected $_login; //login action
+	protected $_main; //main action
+	protected $_retype; //retype (the password) action
+	protected $_db; //reference to the database layer class
+	protected $_params = array(); //the parameters of the object
+
+	public function __construct($params = null) {
+		$this->_params = $params;
+
+		$this->_sessionsTable = $params['sessionsTable'];
+		$this->_usersTable = $params['usersTable'];
+		$this->_groupsTable = $params['groupsTable'];
+		$this->_manyToManyTable = $params['manyToManyTable'];
+		$this->_accessesTable = $params['accessesTable'];
+		$this->_login = Url::getRoot(null) . $params['users_controller'] . '/' . $params['users_login_action'] ;
+		$this->_main = Url::getRoot(null) . $params['panel_controller'] . '/' . $params['panel_main_action'] ;
+		$this->_retype = Url::getRoot(null) . $params['users_controller'] . '/' . $params['hijacking_action'] ;
+		$this->_db = Factory_Db::getInstance($params['database_type']);
+	}
+
+	private function acquireCookie() { #obtain cookie
+		#cookie
+		$this->uid = NULL;
+		global $_COOKIE;
+		$this->uid = isset($_COOKIE[$this->_params['cookie_name']]) ? sanitizeAlnum($_COOKIE[$this->_params['cookie_name']]) : null;
+	}
+
+	private function cleanSessions()
+	{
+		#cancello le sessioni scadute
+		$row = $this->_db->select($this->_sessionsTable,'creation_date',"uid='".$this->uid."'");
+		if ($row)
+		{
+			if ($row[0][$this->_sessionsTable]['creation_date'])
+			{
+				if($row[0][$this->_sessionsTable]['creation_date'] + $this->_params['session_expire'] <= time())
+				{
+					setcookie($this->_params['cookie_name'],'',time()-3600,$this->_params['cookie_path']);
+				}
+			}
+		}
+		$this->_db->del($this->_sessionsTable,"creation_date + " . $this->_params['session_expire'] . " <= ".time());
+	}
+
+	public function checkStatus()
+	{ #controlla se l'utente è già loggato
+		$this->acquireCookie(); #ottengo il cookie
+		$this->cleanSessions(); #elimino le sessioni vecchie
+		$row=$this->_db->select($this->_usersTable.','.$this->_sessionsTable,$this->_usersTable.'.id_user,username,token,user_agent',$this->_usersTable.".id_user=".$this->_sessionsTable.".id_user and uid='".$this->uid."'");
+		if (count($row) === 1 and $row !== false)
+		{
+			$this->status['user']=$row[0][$this->_usersTable]['username'];
+			$this->status['status']='logged';
+			$this->status['id_user']=$row[0][$this->_usersTable]['id_user'];
+			$this->status['user_agent'] = $row[0][$this->_sessionsTable]['user_agent'];
+			$this->status['token'] = $row[0][$this->_sessionsTable]['token'];
+			$this->obtainGroups();
+		} else {
+			$this->status['user']='sconosciuto';
+			$this->status['status']='not-logged';
+			$this->status['id_user']='';
+			$this->status['user_agent']='';
+			$this->status['token'] = '';
+			$this->status['groups'] = array();
+		}
+	}
+
+	public function redirect($val,$time = 3) { #fa il redirect dell'utente
+		if ($val === 'logged') {
+			header('Refresh: '.$time.';url='.$this->_main);
+			if ($time !== 0) echo "You are already logged, ".$this->status['user']."..";
+		} else if ($val === 'accepted') {
+			header('Refresh: '.$time.';url='.$this->_main);
+			if ($time !== 0) echo "Hi ".$this->status['user']."..";
+		} else if ($val === 'login-error') {
+			header('Refresh: '.$time.';url='.$this->_login);
+			if ($time !== 0) echo "Wrong username or password...";
+		} else if ($val === 'not-logged') {
+			header('Refresh: '.$time.';url='.$this->_login);
+			if ($time !== 0) echo "Limited access... sorry";
+		} else if ($val === 'not-authorized') {
+			header('Refresh: '.$time.';url='.$this->_main);
+			if ($time !== 0) echo "Your account doesn't allow you to manage this page.. sorry!";
+		} else if ($val === 'stolen') {
+			header('Refresh: '.$time.';url='.$this->_login);
+			if ($time !== 0) echo "Your session have been probably intercepted! Please login another time.";
+		} else if ($val === 'retype') {
+			header('Refresh: '.$time.';url='.$this->_retype);
+			if ($time !== 0) echo "Your session have been probably intercepted. Please type your password another time.";
+		} else if ($val === 'wait') {
+			header('Refresh: '.$time.';url='.$this->_login);
+			if ($time !== 0) echo "You have to wait ".$this->_params['time_after_failure']." seconds before you can try to login another time";
+		}
+		exit;
+	}
+
+	//obtain the group of the user
+	private function obtainGroups()
+	{
+		$tables = $this->_usersTable.','.$this->_groupsTable.','.$this->_manyToManyTable;
+		$fields = $this->_groupsTable.'.name';
+		$where = $this->_usersTable.'.id_user='.$this->_manyToManyTable.'.id_user and '.$this->_groupsTable.'.id_group='.$this->_manyToManyTable.'.id_group and '.$this->_usersTable.'.id_user='.$this->status['id_user'];
+		$groups = $this->_db->select($tables,$fields,$where);
+		$this->status['groups'] = array();
+		foreach ($groups as $group)
+		{
+			$this->status['groups'][] = $group[$this->_groupsTable]['name'];
+		}
+	}
+
+	//$groups: string with name of groups separated by comma; ex: base,root,users
+	public function checkAccess($groups)
+	{
+		$groupsArray = explode (',',$groups);
+		foreach ($this->status['groups'] as $group)
+		{
+			if (in_array($group,$groupsArray)) return true; 
+		}
+		return false;
+	}
+
+	//check that the user is logged and, if present, check the group of the user (if loggeg)
+	//$groups: comma-separated list of groups whose users can access the page
+	//$time: time before the redirect is carried out
+	public function check($groups  = null, $time = 3)
+	{
+		$this->checkStatus();
+		if (strcmp($this->status['status'],'not-logged') === 0)
+		{
+			$this->redirect('not-logged',$time);
+		}
+		else if (strcmp($this->status['status'],'logged') === 0)
+		{
+			if ($this->_params['hijacking_check'])
+			{
+				if (!$this->checkHijacking())
+				{
+					if ($this->_params['on_hijacking_event'] === 'forceout')
+					{
+						$this->logout();
+						$this->redirect('stolen',$time);
+					}
+					else if ($this->_params['on_hijacking_event'] === 'redirect')
+					{
+						$this->redirect('retype',$time);
+					}
+				}
+			}
+// 			$this->obtainGroups();
+			if (isset($groups))
+			{
+				$permission = $this->checkAccess($groups);
+				if (!$permission) $this->redirect('not-authorized',$time);
+			}
+		}
+	}
+
+	//check if someone have stolen your uid
+	private function checkHijacking()
+	{
+		if (array_key_exists('user_agent',$this->status))
+		{
+			if (strcmp($this->status['user_agent'],'') !== 0)
+			{
+				if (strcmp($this->status['user_agent'],getUserAgent()) === 0)
+				{
+					return true;
+				}
+			}
+		}
+		return false;
+	}
+
+	//check CSRF
+	//$token: token to check
+	public function checkCSRF($token)
+	{
+		if (strcmp($this->status['token'],'') !== 0)
+		{
+			if (strcmp($this->status['token'],$token) === 0)
+			{
+				return true;
+			}
+		}
+		return false;
+	}
+
+	//get an array containing all the users currently logged
+	public function getUsersLogged()
+	{
+		$usersLogged = array();
+		$data=$this->_db->select($this->_usersTable.','.$this->_sessionsTable,'DISTINCT '.$this->_usersTable.'.username',$this->_usersTable.".id_user=".$this->_sessionsTable.".id_user");
+		foreach ($data as $row)
+		{
+			$usersLogged[] = $row[$this->_usersTable]['username'];
+		}
+		return $usersLogged;
+	}
+
+	//get the password of the current user
+	public function getPassword()
+	{
+		$row=$this->_db->select($this->_usersTable,'password',"id_user=".$this->status['id_user']);
+		if ($row !== false)
+		{
+			return $row[0][$this->_usersTable]['password'];
+		}
+		else
+		{
+			return false;
+		}
+	}
+
+	private function checkPassword($user,$pwd) { #check username and password
+
+		if (!in_array($this->_params['password_hash'],Params::$allowedHashFunc))
+		{
+			throw new Exception('Error in '.__METHOD__.' : the hash func has to be '.implode(' or ',Params::$allowedHashFunc));
+		}
+		//calculate the hash of the password
+		$pwd = call_user_func($this->_params['password_hash'],$pwd);
+
+		$row=$this->_db->select($this->_usersTable,$this->_usersTable.'.id_user,username,password',"username=\"".$user."\" and password=\"".$pwd."\" and has_confirmed=0");
+		if (count($row) === 1 and $row !== false)
+		{
+			$this->status['user'] = $row[0][$this->_usersTable]['username'];
+			$this->status['status'] = 'accepted';
+			$this->status['id_user'] = $row[0][$this->_usersTable]['id_user'];
+		}
+		else
+		{
+			$this->status['user'] = 'unknown';
+			$this->status['status'] = 'login-error';
+			$this->status['id_user'] = '';
+			if ($this->_db->recordExists($this->_usersTable,'username',$user))
+			{
+				$this->_db->update($this->_usersTable,'last_failure',array(time()),'username="'.$user.'"');
+			}
+		}
+	}
+
+	//check that enough time is passed since the last failure of the user
+	private function checkLastFailure($user)
+	{
+		//current time
+		$now = time();
+		//max time
+		$max = $now - $this->_params['time_after_failure'];
+		$data = $this->_db->select($this->_usersTable,'last_failure','username="'.$user.'"');
+		if (count($data) === 1 and $data !== false)
+		{
+			if ($data[0][$this->_usersTable]['last_failure'] < $max)
+			{
+				return true;
+			}
+			return false;
+		}
+		else
+		{
+			return true;
+		}
+	}
+
+	public function login($user,$pwd)
+	{
+		$user = sanitizeAll($user);
+		$this->checkStatus();
+		//check if already logged
+		if ($this->status['status'] === 'logged')
+		{
+// 			$this->redirect('logged');
+			return 'logged';
+		}
+		else
+		{
+			if ($this->checkLastFailure($user))
+			{
+				$this->checkPassword($user,$pwd);
+				if ($this->status['status']==='accepted')
+				{
+					$this->uid = md5(randString(10).uniqid(mt_rand(),true));
+					$this->_token = md5(randString(12));
+					$userAgent = getUserAgent();
+					$this->_db->insert($this->_sessionsTable,'id_user,uid,token,creation_date,user_agent',array($this->status['id_user'],$this->uid,$this->_token,time(),$userAgent));
+					setcookie($this->_params['cookie_name'],$this->uid,0,$this->_params['cookie_path']); #magic cookie
+					$this->updateAccesses();
+					
+					$this->_db->del($this->_sessionsTable,'id_user='.$this->status['id_user'].' AND uid != "'.$this->uid.'"');
+					
+// 					$this->redirect('accepted');
+					return 'accepted';
+				}
+				else if ($this->status['status']==='login-error')
+				{
+// 					$this->redirect('login-error');
+					return 'login-error';
+				}
+			}
+			else
+			{
+// 				$this->redirect('wait');
+				return 'wait';
+			}
+		}
+// 		$this->redirect('login-error');
+		return 'login-error';
+	}
+
+	private function updateAccesses()
+	{
+		$ip=getIp(); #ip
+		$date=date('d'). "-" . date('m') . "-" . date('Y'); #date
+		$ora=date('H') . ":" . date('i'); #time
+		$values=array($ip,$date,$ora,$this->status['user']);
+		$res=$this->_db->insert($this->_accessesTable,'ip,data,ora,username',$values);
+	}
+
+	//force out an user
+	//$id: the id of the user
+	public function forceOut($id)
+	{
+		$id = (int)$id;
+		if ($this->_db->del($this->_sessionsTable,'id_user='.$id))
+		{
+			return true;
+		}
+		return false;
+	}
+
+	public function logout()
+	{
+		$this->checkStatus();
+		if ($this->status['status'] === 'logged')
+		{
+			setcookie ($this->_params['cookie_name'], "", time() - 3600,$this->_params['cookie_path']);
+			if ($this->_db->del($this->_sessionsTable,'id_user='.$this->status['id_user']))
+			{
+				return 'was-logged';
+			} 
+			else 
+			{
+				return 'error';
+			}
+		}
+		else
+		{
+			return 'not-logged';
+		}
+	}
+
+}
\ No newline at end of file
-- 
cgit v1.2.3