149 lines
3.8 KiB
PHP
149 lines
3.8 KiB
PHP
<?php
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/**
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* Holds the session handler.
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*
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* @package Sakura
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*/
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namespace Sakura;
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/**
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* User session handler.
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*
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* @package Sakura
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* @author Julian van de Groep <me@flash.moe>
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*/
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class Session
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{
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/**
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* The ID of the user this session is from.
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*
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* @var int
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*/
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public $userId = 0;
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/**
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* The ID of the session.
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*
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* @var string
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*/
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public $sessionId = "";
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/**
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* Constructor.
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*
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* @param int $userId The ID of the user.
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* @param int $sessionId The active session ID.
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*/
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public function __construct($userId, $sessionId = null)
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{
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// Check if a PHP session was already started and if not start one
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if (session_status() != PHP_SESSION_ACTIVE) {
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session_start();
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}
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// Set the supposed session data
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$this->userId = $userId;
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$this->sessionId = $sessionId;
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}
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/**
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* Destroy the active session.
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*/
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public function destroy()
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{
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// Invalidate the session key
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DB::table('sessions')
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->where('session_key', $this->sessionId)
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->where('user_id', $this->userId)
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->delete();
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// Unset userId and sessionId
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unset($this->userId);
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unset($this->sessionId);
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// Destroy the session
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session_regenerate_id(true);
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session_destroy();
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}
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/**
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* Destroy all sessions from this user.
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*/
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public function destroyAll()
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{
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// Delete all database entries with this user in it
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DB::table('sessions')
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->where('user_id', $this->userId)
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->delete();
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// Destroy this session to finish it off
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$this->destroy();
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}
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/**
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* Create a new session.
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*
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* @param boolean $permanent Is this a permanent session?
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*
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* @return string The session key.
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*/
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public function create($permanent)
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{
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// Generate session key
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$session = hash('sha256', $this->userId . base64_encode('sakura' . mt_rand(0, 99999999)) . time());
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// Insert the session into the database
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DB::table('sessions')
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->insert([
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'user_id' => $this->userId,
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'user_ip' => Net::pton(Net::ip()),
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'user_agent' => clean_string(isset($_SERVER['HTTP_USER_AGENT']) ? $_SERVER['HTTP_USER_AGENT'] : 'No user agent header.'),
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'session_key' => $session,
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'session_start' => time(),
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'session_expire' => time() + 604800,
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'session_remember' => $permanent ? '1' : '0',
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]);
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// Return the session key
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return $session;
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}
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/**
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* Validate the session.
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*
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* @return int Success indicator; 0 = false, 1 = active, 2 = permanent.
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*/
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public function validate()
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{
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// Get session from database
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$session = DB::table('sessions')
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->where('user_id', $this->userId)
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->where('session_key', $this->sessionId)
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->get();
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// Check if we actually got something in return
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if (!$session) {
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return 0;
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}
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// Check if the session expired
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if ($session[0]->session_expire < time()) {
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// ...and return false
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return 0;
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}
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/* completely removed the code for ip checking because it only worked with IPv4
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good thing is i can probably do CIDR based checking */
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// If the remember flag is set extend the session time
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if ($session[0]->session_remember) {
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DB::table('sessions')
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->where('session_id', $session[0]->session_id)
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->update(['session_expire' => time() + 604800]);
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}
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// Return 2 if the remember flag is set and return 1 if not
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return $session[0]->session_remember ? 2 : 1;
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}
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}
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