<?php /* * Copyright (c) 2010-2013 Tinyboard Development Group */ defined('TINYBOARD') or exit; // create a hash/salt pair for validate logins function mkhash($username, $password, $salt = false) { global $config; if (!$salt) { // create some sort of salt for the hash $salt = substr(base64_encode(sha1(rand() . time(), true) . $config['cookies']['salt']), 0, 15); $generated_salt = true; } // generate hash (method is not important as long as it's strong) $hash = substr(base64_encode(md5($username . $config['cookies']['salt'] . sha1($username . $password . $salt . ($config['mod']['lock_ip'] ? $_SERVER['REMOTE_ADDR'] : ''), true), true)), 0, 20); if (isset($generated_salt)) return array($hash, $salt); else return $hash; } function generate_salt() { mt_srand(microtime(true) * 100000 + memory_get_usage(true)); return md5(uniqid(mt_rand(), true)); } function login($username, $password, $makehash=true) { global $mod; // SHA1 password if ($makehash) { $password = sha1($password); } $query = prepare("SELECT `id`, `type`, `boards`, `password`, `salt` FROM ``mods`` WHERE `username` = :username"); $query->bindValue(':username', $username); $query->execute() or error(db_error($query)); if ($user = $query->fetch(PDO::FETCH_ASSOC)) { if ($user['password'] === hash('sha256', $user['salt'] . $password)) { return $mod = array( 'id' => $user['id'], 'type' => $user['type'], 'username' => $username, 'hash' => mkhash($username, $user['password']), 'boards' => explode(',', $user['boards']) ); } } return false; } function setCookies() { global $mod, $config; if (!$mod) error('setCookies() was called for a non-moderator!'); setcookie($config['cookies']['mod'], $mod['username'] . // username ':' . $mod['hash'][0] . // password ':' . $mod['hash'][1], // salt time() + $config['cookies']['expire'], $config['cookies']['jail'] ? $config['cookies']['path'] : '/', null, !empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] != 'off', $config['cookies']['httponly']); } function destroyCookies() { global $config; // Delete the cookies setcookie($config['cookies']['mod'], 'deleted', time() - $config['cookies']['expire'], $config['cookies']['jail']?$config['cookies']['path'] : '/', null, !empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] != 'off', true); } function modLog($action, $_board=null) { global $mod, $board, $config; $query = prepare("INSERT INTO ``modlogs`` VALUES (:id, :ip, :board, :time, :text)"); $query->bindValue(':id', $mod['id'], PDO::PARAM_INT); $query->bindValue(':ip', $_SERVER['REMOTE_ADDR']); $query->bindValue(':time', time(), PDO::PARAM_INT); $query->bindValue(':text', $action); if (isset($_board)) $query->bindValue(':board', $_board); elseif (isset($board)) $query->bindValue(':board', $board['uri']); else $query->bindValue(':board', null, PDO::PARAM_NULL); $query->execute() or error(db_error($query)); if ($config['syslog']) _syslog(LOG_INFO, '[mod/' . $mod['username'] . ']: ' . $action); } // Validate session if (isset($_COOKIE[$config['cookies']['mod']])) { // Should be username:hash:salt $cookie = explode(':', $_COOKIE[$config['cookies']['mod']]); if (count($cookie) != 3) { // Malformed cookies destroyCookies(); mod_login(); exit; } $query = prepare("SELECT `id`, `type`, `boards`, `password` FROM ``mods`` WHERE `username` = :username"); $query->bindValue(':username', $cookie[0]); $query->execute() or error(db_error($query)); $user = $query->fetch(PDO::FETCH_ASSOC); // validate password hash if ($cookie[1] !== mkhash($cookie[0], $user['password'], $cookie[2])) { // Malformed cookies destroyCookies(); mod_login(); exit; } $mod = array( 'id' => $user['id'], 'type' => $user['type'], 'username' => $cookie[0], 'boards' => explode(',', $user['boards']) ); } function create_pm_header() { global $mod, $config; if ($config['cache']['enabled'] && ($header = cache::get('pm_unread_' . $mod['id'])) != false) { if ($header === true) return false; return $header; } $query = prepare("SELECT `id` FROM ``pms`` WHERE `to` = :id AND `unread` = 1"); $query->bindValue(':id', $mod['id'], PDO::PARAM_INT); $query->execute() or error(db_error($query)); if ($pm = $query->fetch(PDO::FETCH_ASSOC)) $header = array('id' => $pm['id'], 'waiting' => $query->rowCount() - 1); else $header = true; if ($config['cache']['enabled']) cache::set('pm_unread_' . $mod['id'], $header); if ($header === true) return false; return $header; } function make_secure_link_token($uri) { global $mod, $config; return substr(sha1($config['cookies']['salt'] . '-' . $uri . '-' . $mod['id']), 0, 8); }