1
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<?php
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/*
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* Enano - an open-source CMS capable of wiki functions, Drupal-like sidebar blocks, and everything in between
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* Version 1.0 (Banshee)
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* Copyright (C) 2006-2007 Dan Fuhry
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* sessions.php - everything related to security and user management
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*
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* This program is Free Software; you can redistribute and/or modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
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* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for details.
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*/
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// Prepare a string for insertion into a MySQL database
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function filter($str) { return $db->escape($str); }
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/**
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* Anything and everything related to security and user management. This includes AES encryption, which is illegal in some countries.
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* Documenting the API was not easy - I hope you folks enjoy it.
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* @package Enano
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* @subpackage Session manager
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* @category security, user management, logins, etc.
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*/
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class sessionManager {
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# Variables
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/**
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* Whether we're logged in or not
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* @var bool
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*/
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var $user_logged_in = false;
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/**
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* Our current low-privilege session key
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* @var string
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*/
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var $sid;
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/**
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* Username of currently logged-in user, or IP address if not logged in
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* @var string
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*/
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var $username;
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/**
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* User ID of currently logged-in user, or -1 if not logged in
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* @var int
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*/
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var $user_id;
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/**
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* Real name of currently logged-in user, or blank if not logged in
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* @var string
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*/
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var $real_name;
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/**
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* E-mail address of currently logged-in user, or blank if not logged in
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* @var string
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*/
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var $email;
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/**
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* User level of current user
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* USER_LEVEL_GUEST: guest
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* USER_LEVEL_MEMBER: regular user
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* USER_LEVEL_CHPREF: default - pseudo-level that allows changing password and e-mail address (requires re-authentication)
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* USER_LEVEL_MOD: moderator
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* USER_LEVEL_ADMIN: administrator
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* @var int
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*/
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var $user_level;
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/**
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* High-privilege session key
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* @var string or false if not running on high-level authentication
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*/
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var $sid_super;
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/**
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* The user's theme preference, defaults to $template->default_theme
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* @var string
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*/
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var $theme;
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/**
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* The user's style preference, or style auto-detected based on theme if not logged in
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* @var string
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*/
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var $style;
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/**
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* Signature of current user - appended to comments, etc.
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* @var string
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*/
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var $signature;
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/**
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* UNIX timestamp of when we were registered, or 0 if not logged in
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* @var int
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*/
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var $reg_time;
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/**
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* MD5 hash of the current user's password, if applicable
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* @var string OR bool false
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*/
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var $password_hash;
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/**
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* The number of unread private messages this user has.
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* @var int
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*/
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var $unread_pms = 0;
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/**
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* AES key used to encrypt passwords and session key info - irreversibly destroyed when disallow_password_grab() is called
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* @var string
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*/
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var $private_key;
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/**
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* Regex that defines a valid username, minus the ^ and $, these are added later
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* @var string
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*/
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var $valid_username = '([A-Za-z0-9 \!\@\(\)-]+)';
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/**
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* What we're allowed to do as far as permissions go. This changes based on the value of the "auth" URI param.
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* @var string
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*/
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var $auth_level = -1;
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/**
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* State variable to track if a session timed out
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* @var bool
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*/
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var $sw_timed_out = false;
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/**
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* Switch to track if we're started or not.
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* @access private
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* @var bool
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*/
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var $started = false;
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/**
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* Switch to control compatibility mode (for older Enano websites being upgraded)
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* @access private
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* @var bool
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*/
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var $compat = false;
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/**
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* Our list of permission types.
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* @access private
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* @var array
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*/
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var $acl_types = Array();
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/**
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* The list of descriptions for the permission types
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* @var array
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*/
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var $acl_descs = Array();
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/**
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* A list of dependencies for ACL types.
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* @var array
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*/
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var $acl_deps = Array();
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/**
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* Our tell-all list of permissions.
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* @access private - or, preferably, protected
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* @var array
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*/
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var $perms = Array();
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/**
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* A cache variable - saved after sitewide permissions are checked but before page-specific permissions.
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* @var array
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* @access private
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*/
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var $acl_base_cache = Array();
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/**
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* Stores the scope information for ACL types.
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* @var array
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* @access private
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*/
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var $acl_scope = Array();
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/**
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* Array to track which default permissions are being used
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* @var array
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* @access private
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*/
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var $acl_defaults_used = Array();
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/**
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* Array to track group membership.
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* @var array
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*/
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var $groups = Array();
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/**
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* Associative array to track group modship.
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* @var array
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*/
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var $group_mod = Array();
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# Basic functions
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/**
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* Constructor.
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*/
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function __construct()
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{
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global $db, $session, $paths, $template, $plugins; // Common objects
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include(ENANO_ROOT.'/config.php');
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unset($dbhost, $dbname, $dbuser, $dbpasswd);
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if(isset($crypto_key))
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{
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$this->private_key = $crypto_key;
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$this->private_key = hexdecode($this->private_key);
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}
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else
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{
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if(is_writable(ENANO_ROOT.'/config.php'))
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{
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// Generate and stash a private key
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// This should only happen during an automated silent gradual migration to the new encryption platform.
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$aes = new AESCrypt(AES_BITS, AES_BLOCKSIZE);
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$this->private_key = $aes->gen_readymade_key();
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$config = file_get_contents(ENANO_ROOT.'/config.php');
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if(!$config)
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{
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die('$session->__construct(): can\'t get the contents of config.php');
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}
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$config = str_replace("?>", "\$crypto_key = '{$this->private_key}';\n?>", $config);
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// And while we're at it...
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$config = str_replace('MIDGET_INSTALLED', 'ENANO_INSTALLED', $config);
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$fh = @fopen(ENANO_ROOT.'/config.php', 'w');
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if ( !$fh )
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{
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die('$session->__construct(): Couldn\'t open config file for writing to store the private key, I tried to avoid something like this...');
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}
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fwrite($fh, $config);
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fclose($fh);
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}
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else
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{
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die_semicritical('Crypto error', '<p>No private key was found in the config file, and we can\'t generate one because we don\'t have write access to the config file. Please CHMOD config.php to 666 or 777 and reload this page.</p>');
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}
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}
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// Check for compatibility mode
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if(defined('IN_ENANO_INSTALL'))
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{
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$q = $db->sql_query('SELECT old_encryption FROM '.table_prefix.'users LIMIT 1;');
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if(!$q)
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{
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$error = mysql_error();
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if(strstr($error, "Unknown column 'old_encryption'"))
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$this->compat = true;
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else
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$db->_die('This should never happen and is a bug - the only error that was supposed to happen here didn\'t happen. (sessions.php in constructor, during compat mode check)');
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}
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$db->free_result();
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}
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}
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/**
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* PHP 4 compatible constructor.
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*/
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function sessionManager()
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{
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$this->__construct();
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}
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/**
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* Wrapper function to sanitize strings for MySQL and HTML
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* @param string $text The text to sanitize
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* @return string
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*/
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function prepare_text($text)
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{
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global $db;
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return $db->escape(htmlspecialchars($text));
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}
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/**
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* Makes a SQL query and handles error checking
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* @param string $query The SQL query to make
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* @return resource
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*/
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function sql($query)
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{
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global $db, $session, $paths, $template, $plugins; // Common objects
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$result = $db->sql_query($query);
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if(!$result)
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{
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$db->_die('The error seems to have occurred somewhere in the session management code.');
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}
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return $result;
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}
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# Session restoration and permissions
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/**
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* Initializes the basic state of things, including most user prefs, login data, cookie stuff
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*/
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function start()
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{
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global $db, $session, $paths, $template, $plugins; // Common objects
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if($this->started) return;
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$this->started = true;
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$user = false;
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if(isset($_COOKIE['sid']))
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{
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if($this->compat)
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{
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$userdata = $this->compat_validate_session($_COOKIE['sid']);
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}
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else
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{
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$userdata = $this->validate_session($_COOKIE['sid']);
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}
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if(is_array($userdata))
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{
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$data = RenderMan::strToPageID($paths->get_pageid_from_url());
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if(!$this->compat && $userdata['account_active'] != 1 && $data[1] != 'Special' && $data[1] != 'Admin')
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{
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$this->logout();
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$a = getConfig('account_activation');
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switch($a)
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{
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case 'none':
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default:
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$solution = 'Your account was most likely deactivated by an administrator. Please contact the site administration for further assistance.';
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break;
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case 'user':
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$solution = 'Please check your e-mail; you should have been sent a message with instructions on how to activate your account. If you do not receive an e-mail from this site within 24 hours, please contact the site administration for further assistance.';
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break;
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case 'admin':
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$solution = 'This website has been configured so that all user accounts must be activated by the administrator before they can be used, so your account will most likely be activated the next time the one of the administrators visits the site.';
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break;
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}
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die_semicritical('Account error', '<p>It appears that your user account has not yet been activated. '.$solution.'</p>');
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}
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$this->sid = $_COOKIE['sid'];
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$this->user_logged_in = true;
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$this->user_id = intval($userdata['user_id']);
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$this->username = $userdata['username'];
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$this->password_hash = $userdata['password'];
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$this->user_level = intval($userdata['user_level']);
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$this->real_name = $userdata['real_name'];
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$this->email = $userdata['email'];
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$this->unread_pms = $userdata['num_pms'];
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if(!$this->compat)
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{
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$this->theme = $userdata['theme'];
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$this->style = $userdata['style'];
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$this->signature = $userdata['signature'];
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$this->reg_time = $userdata['reg_time'];
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}
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// Small security risk here - it allows someone who has already authenticated as an administrator to store the "super" key in
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// the cookie. Change this to USER_LEVEL_MEMBER to override that. The same 15-minute restriction applies to this "exploit".
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$this->auth_level = $userdata['auth_level'];
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if(!isset($template->named_theme_list[$this->theme]))
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{
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if($this->compat || !is_object($template))
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{
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$this->theme = 'oxygen';
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$this->style = 'bleu';
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}
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else
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{
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$this->theme = $template->default_theme;
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$this->style = $template->default_style;
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}
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}
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$user = true;
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if(isset($_REQUEST['auth']) && !$this->sid_super)
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{
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// Now he thinks he's a moderator. Or maybe even an administrator. Let's find out if he's telling the truth.
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if($this->compat)
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{
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$key = $_REQUEST['auth'];
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$super = $this->compat_validate_session($key);
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}
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else
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{
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$key = strrev($_REQUEST['auth']);
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$super = $this->validate_session($key);
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}
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if(is_array($super))
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{
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$this->auth_level = intval($super['auth_level']);
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$this->sid_super = $_REQUEST['auth'];
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}
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}
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}
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}
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if(!$user)
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{
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//exit;
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$this->register_guest_session();
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}
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if(!$this->compat)
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{
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// init groups
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$q = $this->sql('SELECT g.group_name,g.group_id,m.is_mod FROM '.table_prefix.'groups AS g
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LEFT JOIN '.table_prefix.'group_members AS m
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ON g.group_id=m.group_id
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WHERE ( m.user_id='.$this->user_id.'
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OR g.group_name=\'Everyone\')
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' . ( enano_version() == '1.0RC1' ? '' : 'AND ( m.pending != 1 OR m.pending IS NULL )' ) . '
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ORDER BY group_id ASC;'); // Make sure "Everyone" comes first so the permissions can be overridden
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if($row = $db->fetchrow())
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{
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do {
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$this->groups[$row['group_id']] = $row['group_name'];
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$this->group_mod[$row['group_id']] = ( intval($row['is_mod']) == 1 );
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} while($row = $db->fetchrow());
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}
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else
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{
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die('No group info');
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}
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}
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$this->check_banlist();
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if ( isset ( $_GET['printable'] ) )
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{
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$this->theme = 'printable';
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$this->style = 'default';
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}
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}
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# Logins
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/**
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* Attempts to perform a login using crypto functions
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* @param string $username The username
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* @param string $aes_data The encrypted password, hex-encoded
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* @param string $aes_key The MD5 hash of the encryption key, hex-encoded
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* @param string $challenge The 256-bit MD5 challenge string - first 128 bits should be the hash, the last 128 should be the challenge salt
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* @param int $level The privilege level we're authenticating for, defaults to 0
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* @return string 'success' on success, or error string on failure
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*/
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function login_with_crypto($username, $aes_data, $aes_key, $challenge, $level = USER_LEVEL_MEMBER)
+ − 499
{
+ − 500
global $db, $session, $paths, $template, $plugins; // Common objects
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+ − 502
$privcache = $this->private_key;
+ − 503
+ − 504
// Instanciate the Rijndael encryption object
+ − 505
$aes = new AESCrypt(AES_BITS, AES_BLOCKSIZE);
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// Fetch our decryption key
+ − 508
+ − 509
$aes_key = $this->fetch_public_key($aes_key);
+ − 510
if(!$aes_key)
+ − 511
return 'Couldn\'t look up public key "'.$aes_key.'" for decryption';
+ − 512
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// Convert the key to a binary string
+ − 514
$bin_key = hexdecode($aes_key);
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+ − 516
if(strlen($bin_key) != AES_BITS / 8)
+ − 517
return 'The decryption key is the wrong length';
+ − 518
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// Decrypt our password
+ − 520
$password = $aes->decrypt($aes_data, $bin_key, ENC_HEX);
+ − 521
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// Initialize our success switch
+ − 523
$success = false;
+ − 524
+ − 525
// Select the user data from the table, and decrypt that so we can verify the password
+ − 526
$this->sql('SELECT password,old_encryption,user_id,user_level,theme,style,temp_password,temp_password_time FROM '.table_prefix.'users WHERE lcase(username)=\''.$this->prepare_text(strtolower($username)).'\';');
+ − 527
if($db->numrows() < 1)
+ − 528
return 'The username and/or password is incorrect.';
+ − 529
$row = $db->fetchrow();
+ − 530
+ − 531
// Check to see if we're logging in using a temporary password
+ − 532
+ − 533
if((intval($row['temp_password_time']) + 3600*24) > time() )
+ − 534
{
+ − 535
$temp_pass = $aes->decrypt( $row['temp_password'], $this->private_key, ENC_HEX );
+ − 536
if( $temp_pass == $password )
+ − 537
{
+ − 538
$url = makeUrlComplete('Special', 'PasswordReset/stage2/' . $row['user_id'] . '/' . $row['temp_password']);
+ − 539
+ − 540
$code = $plugins->setHook('login_password_reset');
+ − 541
foreach ( $code as $cmd )
+ − 542
{
+ − 543
eval($cmd);
+ − 544
}
+ − 545
+ − 546
redirect($url, 'Login sucessful', 'Please wait while you are transferred to the Password Reset form.');
+ − 547
exit;
+ − 548
}
+ − 549
}
+ − 550
+ − 551
if($row['old_encryption'] == 1)
+ − 552
{
+ − 553
// The user's password is stored using the obsolete and insecure MD5 algorithm, so we'll update the field with the new password
+ − 554
if(md5($password) == $row['password'])
+ − 555
{
+ − 556
$pass_stashed = $aes->encrypt($password, $this->private_key, ENC_HEX);
+ − 557
$this->sql('UPDATE '.table_prefix.'users SET password=\''.$pass_stashed.'\',old_encryption=0 WHERE user_id='.$row['user_id'].';');
+ − 558
$success = true;
+ − 559
}
+ − 560
}
+ − 561
else
+ − 562
{
+ − 563
// Our password field is up-to-date with the >=1.0RC1 encryption standards, so decrypt the password in the table and see if we have a match; if so then do challenge authentication
+ − 564
$real_pass = $aes->decrypt(hexdecode($row['password']), $this->private_key, ENC_BINARY);
+ − 565
if($password == $real_pass)
+ − 566
{
+ − 567
// Yay! We passed AES authentication, now do an MD5 challenge check to make sure we weren't spoofed
+ − 568
$chal = substr($challenge, 0, 32);
+ − 569
$salt = substr($challenge, 32, 32);
+ − 570
$correct_challenge = md5( $real_pass . $salt );
+ − 571
if($chal == $correct_challenge)
+ − 572
$success = true;
+ − 573
}
+ − 574
}
+ − 575
if($success)
+ − 576
{
+ − 577
if($level > $row['user_level'])
+ − 578
return 'You are not authorized for this level of access.';
+ − 579
+ − 580
$sess = $this->register_session(intval($row['user_id']), $username, $password, $level);
+ − 581
if($sess)
+ − 582
{
+ − 583
$this->username = $username;
+ − 584
$this->user_id = intval($row['user_id']);
+ − 585
$this->theme = $row['theme'];
+ − 586
$this->style = $row['style'];
+ − 587
+ − 588
if($level > USER_LEVEL_MEMBER)
+ − 589
$this->sql('INSERT INTO '.table_prefix.'logs(log_type,action,time_id,date_string,author,edit_summary,page_text) VALUES(\'security\', \'admin_auth_good\', '.time().', \''.date('d M Y h:i a').'\', \''.$db->escape($username).'\', \''.$db->escape($_SERVER['REMOTE_ADDR']).'\', ' . intval($level) . ')');
+ − 590
else
+ − 591
$this->sql('INSERT INTO '.table_prefix.'logs(log_type,action,time_id,date_string,author,edit_summary) VALUES(\'security\', \'auth_good\', '.time().', \''.date('d M Y h:i a').'\', \''.$db->escape($username).'\', \''.$db->escape($_SERVER['REMOTE_ADDR']).'\')');
+ − 592
+ − 593
$code = $plugins->setHook('login_success');
+ − 594
foreach ( $code as $cmd )
+ − 595
{
+ − 596
eval($cmd);
+ − 597
}
+ − 598
return 'success';
+ − 599
}
+ − 600
else
+ − 601
return 'Your login credentials were correct, but an internal error occurred while registering the session key in the database.';
+ − 602
}
+ − 603
else
+ − 604
{
+ − 605
if($level > USER_LEVEL_MEMBER)
+ − 606
$this->sql('INSERT INTO '.table_prefix.'logs(log_type,action,time_id,date_string,author,edit_summary,page_text) VALUES(\'security\', \'admin_auth_bad\', '.time().', \''.date('d M Y h:i a').'\', \''.$db->escape($username).'\', \''.$db->escape($_SERVER['REMOTE_ADDR']).'\', ' . intval($level) . ')');
+ − 607
else
+ − 608
$this->sql('INSERT INTO '.table_prefix.'logs(log_type,action,time_id,date_string,author,edit_summary) VALUES(\'security\', \'auth_bad\', '.time().', \''.date('d M Y h:i a').'\', \''.$db->escape($username).'\', \''.$db->escape($_SERVER['REMOTE_ADDR']).'\')');
+ − 609
+ − 610
return 'The username and/or password is incorrect.';
+ − 611
}
+ − 612
}
+ − 613
+ − 614
/**
+ − 615
* Attempts to login without using crypto stuff, mainly for use when the other side doesn't like Javascript
+ − 616
* This method of authentication is inherently insecure, there's really nothing we can do about it except hope and pray that everyone moves to Firefox
+ − 617
* Technically it still uses crypto, but it only decrypts the password already stored, which is (obviously) required for authentication
+ − 618
* @param string $username The username
+ − 619
* @param string $password The password -OR- the MD5 hash of the password if $already_md5ed is true
+ − 620
* @param bool $already_md5ed This should be set to true if $password is an MD5 hash, and should be false if it's plaintext. Defaults to false.
+ − 621
* @param int $level The privilege level we're authenticating for, defaults to 0
+ − 622
*/
+ − 623
+ − 624
function login_without_crypto($username, $password, $already_md5ed = false, $level = USER_LEVEL_MEMBER)
+ − 625
{
+ − 626
global $db, $session, $paths, $template, $plugins; // Common objects
+ − 627
+ − 628
$pass_hashed = ( $already_md5ed ) ? $password : md5($password);
+ − 629
+ − 630
// Perhaps we're upgrading Enano?
+ − 631
if($this->compat)
+ − 632
{
+ − 633
return $this->login_compat($username, $pass_hashed, $level);
+ − 634
}
+ − 635
+ − 636
// Instanciate the Rijndael encryption object
+ − 637
$aes = new AESCrypt(AES_BITS, AES_BLOCKSIZE);
+ − 638
+ − 639
// Initialize our success switch
+ − 640
$success = false;
+ − 641
+ − 642
// Retrieve the real password from the database
+ − 643
$this->sql('SELECT password,old_encryption,user_id,user_level,temp_password,temp_password_time FROM '.table_prefix.'users WHERE lcase(username)=\''.$this->prepare_text(strtolower($username)).'\';');
+ − 644
if($db->numrows() < 1)
+ − 645
return 'The username and/or password is incorrect.';
+ − 646
$row = $db->fetchrow();
+ − 647
+ − 648
// Check to see if we're logging in using a temporary password
+ − 649
+ − 650
if((intval($row['temp_password_time']) + 3600*24) > time() )
+ − 651
{
+ − 652
$temp_pass = $aes->decrypt( $row['temp_password'], $this->private_key, ENC_HEX );
+ − 653
if( md5($temp_pass) == $pass_hashed )
+ − 654
{
+ − 655
$code = $plugins->setHook('login_password_reset');
+ − 656
foreach ( $code as $cmd )
+ − 657
{
+ − 658
eval($cmd);
+ − 659
}
+ − 660
+ − 661
header('Location: ' . makeUrlComplete('Special', 'PasswordReset/stage2/' . $row['user_id'] . '/' . $row['temp_password']) );
+ − 662
+ − 663
exit;
+ − 664
}
+ − 665
}
+ − 666
+ − 667
if($row['old_encryption'] == 1)
+ − 668
{
+ − 669
// The user's password is stored using the obsolete and insecure MD5 algorithm - we'll update the field with the new password
+ − 670
if($pass_hashed == $row['password'] && !$already_md5ed)
+ − 671
{
+ − 672
$pass_stashed = $aes->encrypt($password, $this->private_key, ENC_HEX);
+ − 673
$this->sql('UPDATE '.table_prefix.'users SET password=\''.$pass_stashed.'\',old_encryption=0 WHERE user_id='.$row['user_id'].';');
+ − 674
$success = true;
+ − 675
}
+ − 676
elseif($pass_hashed == $row['password'] && $already_md5ed)
+ − 677
{
+ − 678
// We don't have the real password so don't bother with encrypting it, just call it success and get out of here
+ − 679
$success = true;
+ − 680
}
+ − 681
}
+ − 682
else
+ − 683
{
+ − 684
// Our password field is up-to-date with the >=1.0RC1 encryption standards, so decrypt the password in the table and see if we have a match
+ − 685
$real_pass = $aes->decrypt($row['password'], $this->private_key);
+ − 686
if($pass_hashed == md5($real_pass))
+ − 687
{
+ − 688
$success = true;
+ − 689
}
+ − 690
}
+ − 691
if($success)
+ − 692
{
+ − 693
if((int)$level > (int)$row['user_level'])
+ − 694
return 'You are not authorized for this level of access.';
+ − 695
$sess = $this->register_session(intval($row['user_id']), $username, $real_pass, $level);
+ − 696
if($sess)
+ − 697
{
+ − 698
if($level > USER_LEVEL_MEMBER)
+ − 699
$this->sql('INSERT INTO '.table_prefix.'logs(log_type,action,time_id,date_string,author,edit_summary,page_text) VALUES(\'security\', \'admin_auth_good\', '.time().', \''.date('d M Y h:i a').'\', \''.$db->escape($username).'\', \''.$db->escape($_SERVER['REMOTE_ADDR']).'\', ' . intval($level) . ')');
+ − 700
else
+ − 701
$this->sql('INSERT INTO '.table_prefix.'logs(log_type,action,time_id,date_string,author,edit_summary) VALUES(\'security\', \'auth_good\', '.time().', \''.date('d M Y h:i a').'\', \''.$db->escape($username).'\', \''.$db->escape($_SERVER['REMOTE_ADDR']).'\')');
+ − 702
+ − 703
$code = $plugins->setHook('login_success');
+ − 704
foreach ( $code as $cmd )
+ − 705
{
+ − 706
eval($cmd);
+ − 707
}
+ − 708
return 'success';
+ − 709
}
+ − 710
else
+ − 711
return 'Your login credentials were correct, but an internal error occured while registering the session key in the database.';
+ − 712
}
+ − 713
else
+ − 714
{
+ − 715
if($level > USER_LEVEL_MEMBER)
+ − 716
$this->sql('INSERT INTO '.table_prefix.'logs(log_type,action,time_id,date_string,author,edit_summary,page_text) VALUES(\'security\', \'admin_auth_bad\', '.time().', \''.date('d M Y h:i a').'\', \''.$db->escape($username).'\', \''.$db->escape($_SERVER['REMOTE_ADDR']).'\', ' . intval($level) . ')');
+ − 717
else
+ − 718
$this->sql('INSERT INTO '.table_prefix.'logs(log_type,action,time_id,date_string,author,edit_summary) VALUES(\'security\', \'auth_bad\', '.time().', \''.date('d M Y h:i a').'\', \''.$db->escape($username).'\', \''.$db->escape($_SERVER['REMOTE_ADDR']).'\')');
+ − 719
+ − 720
return 'The username and/or password is incorrect.';
+ − 721
}
+ − 722
}
+ − 723
+ − 724
/**
+ − 725
* Attempts to log in using the old table structure and algorithm.
+ − 726
* @param string $username
+ − 727
* @param string $password This should be an MD5 hash
+ − 728
* @return string 'success' if successful, or error message on failure
+ − 729
*/
+ − 730
+ − 731
function login_compat($username, $password, $level = 0)
+ − 732
{
+ − 733
global $db, $session, $paths, $template, $plugins; // Common objects
+ − 734
$pass_hashed =& $password;
+ − 735
$this->sql('SELECT password,user_id,user_level FROM '.table_prefix.'users WHERE username=\''.$this->prepare_text($username).'\';');
+ − 736
if($db->numrows() < 1)
+ − 737
return 'The username and/or password is incorrect.';
+ − 738
$row = $db->fetchrow();
+ − 739
if($row['password'] == $password)
+ − 740
{
+ − 741
if((int)$level > (int)$row['user_level'])
+ − 742
return 'You are not authorized for this level of access.';
+ − 743
$sess = $this->register_session_compat(intval($row['user_id']), $username, $password, $level);
+ − 744
if($sess)
+ − 745
return 'success';
+ − 746
else
+ − 747
return 'Your login credentials were correct, but an internal error occured while registering the session key in the database.';
+ − 748
}
+ − 749
else
+ − 750
{
+ − 751
return 'The username and/or password is incorrect.';
+ − 752
}
+ − 753
}
+ − 754
+ − 755
/**
+ − 756
* Registers a session key in the database. This function *ASSUMES* that the username and password have already been validated!
+ − 757
* Basically the session key is a base64-encoded cookie (encrypted with the site's private key) that says "u=[username];p=[sha1 of password]"
+ − 758
* @param int $user_id
+ − 759
* @param string $username
+ − 760
* @param string $password
+ − 761
* @param int $level The level of access to grant, defaults to USER_LEVEL_MEMBER
+ − 762
* @return bool
+ − 763
*/
+ − 764
+ − 765
function register_session($user_id, $username, $password, $level = USER_LEVEL_MEMBER)
+ − 766
{
+ − 767
$salt = md5(microtime() . mt_rand());
+ − 768
$passha1 = sha1($password);
+ − 769
$session_key = "u=$username;p=$passha1;s=$salt";
+ − 770
$aes = new AESCrypt(AES_BITS, AES_BLOCKSIZE);
+ − 771
$session_key = $aes->encrypt($session_key, $this->private_key, ENC_HEX);
+ − 772
if($level > USER_LEVEL_MEMBER)
+ − 773
{
+ − 774
$hexkey = strrev($session_key);
+ − 775
$this->sid_super = $hexkey;
+ − 776
$_GET['auth'] = $hexkey;
+ − 777
}
+ − 778
else
+ − 779
{
+ − 780
setcookie( 'sid', $session_key, time()+315360000, scriptPath.'/' );
+ − 781
$_COOKIE['sid'] = $session_key;
+ − 782
}
+ − 783
$keyhash = md5($session_key);
+ − 784
$ip = ip2hex($_SERVER['REMOTE_ADDR']);
+ − 785
if(!$ip)
+ − 786
die('$session->register_session: Remote-Addr was spoofed');
+ − 787
$time = time();
+ − 788
if(!is_int($user_id))
+ − 789
die('Somehow an SQL injection attempt crawled into our session registrar! (1)');
+ − 790
if(!is_int($level))
+ − 791
die('Somehow an SQL injection attempt crawled into our session registrar! (2)');
+ − 792
+ − 793
$query = $this->sql('INSERT INTO '.table_prefix.'session_keys(session_key, salt, user_id, auth_level, source_ip, time) VALUES(\''.$keyhash.'\', \''.$salt.'\', '.$user_id.', '.$level.', \''.$ip.'\', '.$time.');');
+ − 794
return true;
+ − 795
}
+ − 796
+ − 797
/**
+ − 798
* Identical to register_session in nature, but uses the old login/table structure. DO NOT use this.
+ − 799
* @see sessionManager::register_session()
+ − 800
* @access private
+ − 801
*/
+ − 802
+ − 803
function register_session_compat($user_id, $username, $password, $level = 0)
+ − 804
{
+ − 805
$salt = md5(microtime() . mt_rand());
+ − 806
$thekey = md5($password . $salt);
+ − 807
if($level > 0)
+ − 808
{
+ − 809
$this->sid_super = $thekey;
+ − 810
}
+ − 811
else
+ − 812
{
+ − 813
setcookie( 'sid', $thekey, time()+315360000, scriptPath.'/' );
+ − 814
$_COOKIE['sid'] = $thekey;
+ − 815
}
+ − 816
$ip = ip2hex($_SERVER['REMOTE_ADDR']);
+ − 817
if(!$ip)
+ − 818
die('$session->register_session: Remote-Addr was spoofed');
+ − 819
$time = time();
+ − 820
if(!is_int($user_id))
+ − 821
die('Somehow an SQL injection attempt crawled into our session registrar! (1)');
+ − 822
if(!is_int($level))
+ − 823
die('Somehow an SQL injection attempt crawled into our session registrar! (2)');
+ − 824
$query = $this->sql('INSERT INTO '.table_prefix.'session_keys(session_key, salt, user_id, auth_level, source_ip, time) VALUES(\''.$thekey.'\', \''.$salt.'\', '.$user_id.', '.$level.', \''.$ip.'\', '.$time.');');
+ − 825
return true;
+ − 826
}
+ − 827
+ − 828
/**
+ − 829
* Creates/restores a guest session
+ − 830
* @todo implement real session management for guests
+ − 831
*/
+ − 832
+ − 833
function register_guest_session()
+ − 834
{
+ − 835
global $db, $session, $paths, $template, $plugins; // Common objects
+ − 836
$this->username = $_SERVER['REMOTE_ADDR'];
+ − 837
$this->user_level = USER_LEVEL_GUEST;
+ − 838
if($this->compat || defined('IN_ENANO_INSTALL'))
+ − 839
{
+ − 840
$this->theme = 'oxygen';
+ − 841
$this->style = 'bleu';
+ − 842
}
+ − 843
else
+ − 844
{
+ − 845
$this->theme = ( isset($_GET['theme']) && isset($template->named_theme_list[$_GET['theme']])) ? $_GET['theme'] : $template->default_theme;
+ − 846
$this->style = ( isset($_GET['style']) && file_exists(ENANO_ROOT.'/themes/'.$this->theme . '/css/'.$_GET['style'].'.css' )) ? $_GET['style'] : substr($template->named_theme_list[$this->theme]['default_style'], 0, strlen($template->named_theme_list[$this->theme]['default_style'])-4);
+ − 847
}
+ − 848
$this->user_id = 1;
+ − 849
}
+ − 850
+ − 851
/**
+ − 852
* Validates a session key, and returns the userdata associated with the key or false
+ − 853
* @param string $key The session key to validate
+ − 854
* @return array Keys are 'user_id', 'username', 'email', 'real_name', 'user_level', 'theme', 'style', 'signature', 'reg_time', 'account_active', 'activation_key', and 'auth_level' or bool false if validation failed. The key 'auth_level' is the maximum authorization level that this key provides.
+ − 855
*/
+ − 856
+ − 857
function validate_session($key)
+ − 858
{
+ − 859
global $db, $session, $paths, $template, $plugins; // Common objects
+ − 860
$aes = new AESCrypt(AES_BITS, AES_BLOCKSIZE, true);
+ − 861
$decrypted_key = $aes->decrypt($key, $this->private_key, ENC_HEX);
+ − 862
+ − 863
if ( !$decrypted_key )
+ − 864
{
+ − 865
die_semicritical('AES encryption error', '<p>Something went wrong during the AES decryption process.</p><pre>'.print_r($decrypted_key, true).'</pre>');
+ − 866
}
+ − 867
+ − 868
$n = preg_match('/^u='.$this->valid_username.';p=([A-Fa-f0-9]+?);s=([A-Fa-f0-9]+?)$/', $decrypted_key, $keydata);
+ − 869
if($n < 1)
+ − 870
{
+ − 871
// echo '(debug) $session->validate_session: Key does not match regex<br />Decrypted key: '.$decrypted_key;
+ − 872
return false;
+ − 873
}
+ − 874
$keyhash = md5($key);
+ − 875
$salt = $db->escape($keydata[3]);
+ − 876
$query = $this->sql('SELECT u.user_id AS uid,u.username,u.password,u.email,u.real_name,u.user_level,u.theme,u.style,u.signature,u.reg_time,u.account_active,u.activation_key,k.source_ip,k.time,k.auth_level,COUNT(p.message_id) AS num_pms,x.* FROM '.table_prefix.'session_keys AS k
+ − 877
LEFT JOIN '.table_prefix.'users AS u
+ − 878
ON ( u.user_id=k.user_id )
+ − 879
LEFT JOIN '.table_prefix.'users_extra AS x
+ − 880
ON ( u.user_id=x.user_id OR x.user_id IS NULL )
+ − 881
LEFT JOIN '.table_prefix.'privmsgs AS p
+ − 882
ON ( p.message_to=u.username AND p.message_read=0 )
+ − 883
WHERE k.session_key=\''.$keyhash.'\'
+ − 884
AND k.salt=\''.$salt.'\'
+ − 885
GROUP BY u.user_id;');
+ − 886
if($db->numrows() < 1)
+ − 887
{
+ − 888
// echo '(debug) $session->validate_session: Key was not found in database<br />';
+ − 889
return false;
+ − 890
}
+ − 891
$row = $db->fetchrow();
+ − 892
$row['user_id'] =& $row['uid'];
+ − 893
$ip = ip2hex($_SERVER['REMOTE_ADDR']);
+ − 894
if($row['auth_level'] > $row['user_level'])
+ − 895
{
+ − 896
// Failed authorization check
+ − 897
// echo '(debug) $session->validate_session: access to this auth level denied<br />';
+ − 898
return false;
+ − 899
}
+ − 900
if($ip != $row['source_ip'])
+ − 901
{
+ − 902
// Failed IP address check
+ − 903
// echo '(debug) $session->validate_session: IP address mismatch<br />';
+ − 904
return false;
+ − 905
}
+ − 906
+ − 907
// Do the password validation
+ − 908
$real_pass = $aes->decrypt($row['password'], $this->private_key, ENC_HEX);
+ − 909
+ − 910
//die('<pre>'.print_r($keydata, true).'</pre>');
+ − 911
if(sha1($real_pass) != $keydata[2])
+ − 912
{
+ − 913
// Failed password check
+ − 914
// echo '(debug) $session->validate_session: encrypted password is wrong<br />Real password: '.$real_pass.'<br />Real hash: '.sha1($real_pass).'<br />User hash: '.$keydata[2];
+ − 915
return false;
+ − 916
}
+ − 917
+ − 918
$time_now = time();
+ − 919
$time_key = $row['time'] + 900;
+ − 920
if($time_now > $time_key && $row['auth_level'] > USER_LEVEL_MEMBER)
+ − 921
{
+ − 922
// Session timed out
+ − 923
// echo '(debug) $session->validate_session: super session timed out<br />';
+ − 924
$this->sw_timed_out = true;
+ − 925
return false;
+ − 926
}
+ − 927
+ − 928
// If this is an elevated-access session key, update the time
+ − 929
if( $row['auth_level'] > USER_LEVEL_MEMBER )
+ − 930
{
+ − 931
$this->sql('UPDATE '.table_prefix.'session_keys SET time='.time().' WHERE session_key=\''.$keyhash.'\';');
+ − 932
}
+ − 933
+ − 934
$row['password'] = md5($real_pass);
+ − 935
return $row;
+ − 936
}
+ − 937
+ − 938
/**
+ − 939
* Validates a session key, and returns the userdata associated with the key or false. Optimized for compatibility with the old MD5-based auth system.
+ − 940
* @param string $key The session key to validate
+ − 941
* @return array Keys are 'user_id', 'username', 'email', 'real_name', 'user_level', 'theme', 'style', 'signature', 'reg_time', 'account_active', 'activation_key', and 'auth_level' or bool false if validation failed. The key 'auth_level' is the maximum authorization level that this key provides.
+ − 942
*/
+ − 943
+ − 944
function compat_validate_session($key)
+ − 945
{
+ − 946
global $db, $session, $paths, $template, $plugins; // Common objects
+ − 947
$key = $db->escape($key);
+ − 948
+ − 949
$query = $this->sql('SELECT u.user_id,u.username,u.password,u.email,u.real_name,u.user_level,k.source_ip,k.salt,k.time,k.auth_level FROM '.table_prefix.'session_keys AS k
+ − 950
LEFT JOIN '.table_prefix.'users AS u
+ − 951
ON u.user_id=k.user_id
+ − 952
WHERE k.session_key=\''.$key.'\';');
+ − 953
if($db->numrows() < 1)
+ − 954
{
+ − 955
// echo '(debug) $session->validate_session: Key '.$key.' was not found in database<br />';
+ − 956
return false;
+ − 957
}
+ − 958
$row = $db->fetchrow();
+ − 959
$ip = ip2hex($_SERVER['REMOTE_ADDR']);
+ − 960
if($row['auth_level'] > $row['user_level'])
+ − 961
{
+ − 962
// Failed authorization check
+ − 963
// echo '(debug) $session->validate_session: user not authorized for this access level';
+ − 964
return false;
+ − 965
}
+ − 966
if($ip != $row['source_ip'])
+ − 967
{
+ − 968
// Failed IP address check
+ − 969
// echo '(debug) $session->validate_session: IP address mismatch; IP in table: '.$row['source_ip'].'; reported IP: '.$ip.'';
+ − 970
return false;
+ − 971
}
+ − 972
+ − 973
// Do the password validation
+ − 974
$real_key = md5($row['password'] . $row['salt']);
+ − 975
+ − 976
//die('<pre>'.print_r($keydata, true).'</pre>');
+ − 977
if($real_key != $key)
+ − 978
{
+ − 979
// Failed password check
+ − 980
// echo '(debug) $session->validate_session: supplied password is wrong<br />Real key: '.$real_key.'<br />User key: '.$key;
+ − 981
return false;
+ − 982
}
+ − 983
+ − 984
$time_now = time();
+ − 985
$time_key = $row['time'] + 900;
+ − 986
if($time_now > $time_key && $row['auth_level'] >= 1)
+ − 987
{
+ − 988
$this->sw_timed_out = true;
+ − 989
// Session timed out
+ − 990
// echo '(debug) $session->validate_session: super session timed out<br />';
+ − 991
return false;
+ − 992
}
+ − 993
+ − 994
return $row;
+ − 995
}
+ − 996
+ − 997
/**
+ − 998
* Demotes us to one less than the specified auth level. AKA destroys elevated authentication and/or logs out the user, depending on $level
+ − 999
* @param int $level How low we should go - USER_LEVEL_MEMBER means demote to USER_LEVEL_GUEST, and anything more powerful than USER_LEVEL_MEMBER means demote to USER_LEVEL_MEMBER
+ − 1000
* @return string 'success' if successful, or error on failure
+ − 1001
*/
+ − 1002
+ − 1003
function logout($level = USER_LEVEL_MEMBER)
+ − 1004
{
+ − 1005
global $db, $session, $paths, $template, $plugins; // Common objects
+ − 1006
$ou = $this->username;
+ − 1007
$oid = $this->user_id;
+ − 1008
if($level > USER_LEVEL_CHPREF)
+ − 1009
{
+ − 1010
$aes = new AESCrypt(AES_BITS, AES_BLOCKSIZE);
+ − 1011
if(!$this->user_logged_in || $this->auth_level < USER_LEVEL_MOD) return 'success';
+ − 1012
// Destroy elevated privileges
+ − 1013
$keyhash = md5(strrev($this->sid_super));
+ − 1014
$this->sql('DELETE FROM '.table_prefix.'session_keys WHERE session_key=\''.$keyhash.'\' AND user_id=\'' . $this->user_id . '\';');
+ − 1015
$this->sid_super = false;
+ − 1016
$this->auth_level = USER_LEVEL_MEMBER;
+ − 1017
}
+ − 1018
else
+ − 1019
{
+ − 1020
if($this->user_logged_in)
+ − 1021
{
+ − 1022
// Completely destroy our session
+ − 1023
if($this->auth_level > USER_LEVEL_CHPREF)
+ − 1024
{
+ − 1025
$this->logout(USER_LEVEL_ADMIN);
+ − 1026
}
+ − 1027
$this->sql('DELETE FROM '.table_prefix.'session_keys WHERE session_key=\''.md5($this->sid).'\';');
+ − 1028
setcookie( 'sid', '', time()-(3600*24), scriptPath.'/' );
+ − 1029
}
+ − 1030
}
+ − 1031
$code = $plugins->setHook('logout_success'); // , Array('level'=>$level,'old_username'=>$ou,'old_user_id'=>$oid));
+ − 1032
foreach ( $code as $cmd )
+ − 1033
{
+ − 1034
eval($cmd);
+ − 1035
}
+ − 1036
return 'success';
+ − 1037
}
+ − 1038
+ − 1039
# Miscellaneous stuff
+ − 1040
+ − 1041
/**
+ − 1042
* Appends the high-privilege session key to the URL if we are authorized to do high-privilege stuff
+ − 1043
* @param string $url The URL to add session data to
+ − 1044
* @return string
+ − 1045
*/
+ − 1046
+ − 1047
function append_sid($url)
+ − 1048
{
+ − 1049
$sep = ( strstr($url, '?') ) ? '&' : '?';
+ − 1050
if ( $this->sid_super )
+ − 1051
{
+ − 1052
$url = $url . $sep . 'auth=' . urlencode($this->sid_super);
+ − 1053
// echo($this->sid_super.'<br/>');
+ − 1054
}
+ − 1055
return $url;
+ − 1056
}
+ − 1057
+ − 1058
/**
+ − 1059
* Grabs the user's password MD5
+ − 1060
* @return string, or bool false if access denied
+ − 1061
*/
+ − 1062
+ − 1063
function grab_password_hash()
+ − 1064
{
+ − 1065
if(!$this->password_hash) return false;
+ − 1066
return $this->password_hash;
+ − 1067
}
+ − 1068
+ − 1069
/**
+ − 1070
* Destroys the user's password MD5 in memory
+ − 1071
*/
+ − 1072
+ − 1073
function disallow_password_grab()
+ − 1074
{
+ − 1075
$this->password_hash = false;
+ − 1076
return false;
+ − 1077
}
+ − 1078
+ − 1079
/**
+ − 1080
* Generates an AES key and stashes it in the database
+ − 1081
* @return string Hex-encoded AES key
+ − 1082
*/
+ − 1083
+ − 1084
function rijndael_genkey()
+ − 1085
{
+ − 1086
$aes = new AESCrypt(AES_BITS, AES_BLOCKSIZE);
+ − 1087
$key = $aes->gen_readymade_key();
+ − 1088
$keys = getConfig('login_key_cache');
+ − 1089
if(is_string($keys))
+ − 1090
$keys .= $key;
+ − 1091
else
+ − 1092
$keys = $key;
+ − 1093
setConfig('login_key_cache', $keys);
+ − 1094
return $key;
+ − 1095
}
+ − 1096
+ − 1097
/**
+ − 1098
* Generate a totally random 128-bit value for MD5 challenges
+ − 1099
* @return string
+ − 1100
*/
+ − 1101
+ − 1102
function dss_rand()
+ − 1103
{
+ − 1104
$aes = new AESCrypt();
+ − 1105
$random = $aes->randkey(128);
+ − 1106
unset($aes);
+ − 1107
return md5(microtime() . $random);
+ − 1108
}
+ − 1109
+ − 1110
/**
+ − 1111
* Fetch a cached login public key using the MD5sum as an identifier. Each key can only be fetched once before it is destroyed.
+ − 1112
* @param string $md5 The MD5 sum of the key
+ − 1113
* @return string, or bool false on failure
+ − 1114
*/
+ − 1115
+ − 1116
function fetch_public_key($md5)
+ − 1117
{
+ − 1118
$keys = getConfig('login_key_cache');
+ − 1119
$keys = enano_str_split($keys, AES_BITS / 4);
+ − 1120
+ − 1121
foreach($keys as $i => $k)
+ − 1122
{
+ − 1123
if(md5($k) == $md5)
+ − 1124
{
+ − 1125
unset($keys[$i]);
+ − 1126
if(count($keys) > 0)
+ − 1127
{
+ − 1128
if ( strlen(getConfig('login_key_cache') ) > 64000 )
+ − 1129
{
+ − 1130
// This should only need to be done once every month or so for an average-size site
+ − 1131
setConfig('login_key_cache', '');
+ − 1132
}
+ − 1133
else
+ − 1134
{
+ − 1135
$keys = implode('', array_values($keys));
+ − 1136
setConfig('login_key_cache', $keys);
+ − 1137
}
+ − 1138
}
+ − 1139
else
+ − 1140
{
+ − 1141
setConfig('login_key_cache', '');
+ − 1142
}
+ − 1143
return $k;
+ − 1144
}
+ − 1145
}
+ − 1146
// Couldn't find the key...
+ − 1147
return false;
+ − 1148
}
+ − 1149
+ − 1150
/**
+ − 1151
* Adds a user to a group.
+ − 1152
* @param int User ID
+ − 1153
* @param int Group ID
+ − 1154
* @param bool Group moderator - defaults to false
+ − 1155
* @return bool True on success, false on failure
+ − 1156
*/
+ − 1157
+ − 1158
function add_user_to_group($user_id, $group_id, $is_mod = false)
+ − 1159
{
+ − 1160
global $db, $session, $paths, $template, $plugins; // Common objects
+ − 1161
+ − 1162
// Validation
+ − 1163
if ( !is_int($user_id) || !is_int($group_id) || !is_bool($is_mod) )
+ − 1164
return false;
+ − 1165
if ( $user_id < 1 || $group_id < 1 )
+ − 1166
return false;
+ − 1167
+ − 1168
$mod_switch = ( $is_mod ) ? '1' : '0';
+ − 1169
$q = $this->sql('SELECT member_id,is_mod FROM '.table_prefix.'group_members WHERE user_id=' . $user_id . ' AND group_id=' . $group_id . ';');
+ − 1170
if ( !$q )
+ − 1171
$db->_die();
+ − 1172
if ( $db->numrows() < 1 )
+ − 1173
{
+ − 1174
// User is not in group
+ − 1175
$this->sql('INSERT INTO '.table_prefix.'group_members(user_id,group_id,is_mod) VALUES(' . $user_id . ', ' . $group_id . ', ' . $mod_switch . ');');
+ − 1176
return true;
+ − 1177
}
+ − 1178
else
+ − 1179
{
+ − 1180
$row = $db->fetchrow();
+ − 1181
// Update modship status
+ − 1182
if ( strval($row['is_mod']) == $mod_switch )
+ − 1183
{
+ − 1184
// Modship unchanged
+ − 1185
return true;
+ − 1186
}
+ − 1187
else
+ − 1188
{
+ − 1189
// Modship changed
+ − 1190
$this->sql('UPDATE '.table_prefix.'group_members SET is_mod=' . $mod_switch . ' WHERE member_id=' . $row['member_id'] . ';');
+ − 1191
return true;
+ − 1192
}
+ − 1193
}
+ − 1194
return false;
+ − 1195
}
+ − 1196
+ − 1197
/**
+ − 1198
* Removes a user from a group.
+ − 1199
* @param int User ID
+ − 1200
* @param int Group ID
+ − 1201
* @return bool True on success, false on failure
+ − 1202
* @todo put a little more error checking in...
+ − 1203
*/
+ − 1204
+ − 1205
function remove_user_from_group($user_id, $group_id)
+ − 1206
{
+ − 1207
if ( !is_int($user_id) || !is_int($group_id) )
+ − 1208
return false;
+ − 1209
$this->sql('DELETE FROM '.table_prefix."group_members WHERE user_id=$user_id AND group_id=$group_id;");
+ − 1210
return true;
+ − 1211
}
+ − 1212
+ − 1213
/**
+ − 1214
* Checks the banlist to ensure that we're an allowed user. Doesn't return anything because it dies if the user is banned.
+ − 1215
*/
+ − 1216
+ − 1217
function check_banlist()
+ − 1218
{
+ − 1219
global $db, $session, $paths, $template, $plugins; // Common objects
+ − 1220
if($this->compat)
+ − 1221
$q = $this->sql('SELECT ban_id,ban_type,ban_value,is_regex FROM '.table_prefix.'banlist ORDER BY ban_type;');
+ − 1222
else
+ − 1223
$q = $this->sql('SELECT ban_id,ban_type,ban_value,is_regex,reason FROM '.table_prefix.'banlist ORDER BY ban_type;');
+ − 1224
if(!$q) $db->_die('The banlist data could not be selected.');
+ − 1225
$banned = false;
+ − 1226
while($row = $db->fetchrow())
+ − 1227
{
+ − 1228
if($this->compat)
+ − 1229
$row['reason'] = 'None available - session manager is in compatibility mode';
+ − 1230
switch($row['ban_type'])
+ − 1231
{
+ − 1232
case BAN_IP:
+ − 1233
if(intval($row['is_regex'])==1) {
+ − 1234
if(preg_match('#'.$row['ban_value'].'#i', $_SERVER['REMOTE_ADDR']))
+ − 1235
{
+ − 1236
$banned = true;
+ − 1237
$reason = $row['reason'];
+ − 1238
}
+ − 1239
}
+ − 1240
else {
+ − 1241
if($row['ban_value']==$_SERVER['REMOTE_ADDR']) { $banned = true; $reason = $row['reason']; }
+ − 1242
}
+ − 1243
break;
+ − 1244
case BAN_USER:
+ − 1245
if(intval($row['is_regex'])==1) {
+ − 1246
if(preg_match('#'.$row['ban_value'].'#i', $this->username))
+ − 1247
{
+ − 1248
$banned = true;
+ − 1249
$reason = $row['reason'];
+ − 1250
}
+ − 1251
}
+ − 1252
else {
+ − 1253
if($row['ban_value']==$this->username) { $banned = true; $reason = $row['reason']; }
+ − 1254
}
+ − 1255
break;
+ − 1256
case BAN_EMAIL:
+ − 1257
if(intval($row['is_regex'])==1) {
+ − 1258
if(preg_match('#'.$row['ban_value'].'#i', $this->email))
+ − 1259
{
+ − 1260
$banned = true;
+ − 1261
$reason = $row['reason'];
+ − 1262
}
+ − 1263
}
+ − 1264
else {
+ − 1265
if($row['ban_value']==$this->email) { $banned = true; $reason = $row['reason']; }
+ − 1266
}
+ − 1267
break;
+ − 1268
default:
+ − 1269
die('Ban error: rule "'.$row['ban_value'].'" has an invalid type ('.$row['ban_type'].')');
+ − 1270
}
+ − 1271
}
+ − 1272
if($banned && $paths->get_pageid_from_url() != $paths->nslist['Special'].'CSS')
+ − 1273
{
+ − 1274
// This guy is banned - kill the session, kill the database connection, bail out, and be pretty about it
+ − 1275
die_semicritical('Ban notice', '<div class="error-box">You have been banned from this website. Please contact the site administrator for more information.<br /><br />Reason:<br />'.$reason.'</div>');
+ − 1276
exit;
+ − 1277
}
+ − 1278
}
+ − 1279
+ − 1280
# Registration
+ − 1281
+ − 1282
/**
+ − 1283
* Registers a user. This does not perform any type of login.
+ − 1284
* @param string $username
+ − 1285
* @param string $password This should be unencrypted.
+ − 1286
* @param string $email
+ − 1287
* @param string $real_name Optional, defaults to ''.
+ − 1288
*/
+ − 1289
+ − 1290
function create_user($username, $password, $email, $real_name = '') {
+ − 1291
global $db, $session, $paths, $template, $plugins; // Common objects
+ − 1292
+ − 1293
// Initialize AES
+ − 1294
$aes = new AESCrypt(AES_BITS, AES_BLOCKSIZE);
+ − 1295
+ − 1296
if(!preg_match('#^'.$this->valid_username.'$#', $username)) return 'The username you chose contains invalid characters.';
+ − 1297
$username = $this->prepare_text($username);
+ − 1298
$email = $this->prepare_text($email);
+ − 1299
$real_name = $this->prepare_text($real_name);
+ − 1300
$password = $aes->encrypt($password, $this->private_key, ENC_HEX);
+ − 1301
+ − 1302
$nameclause = ( $real_name != '' ) ? ' OR real_name=\''.$real_name.'\'' : '';
+ − 1303
$q = $this->sql('SELECT * FROM '.table_prefix.'users WHERE lcase(username)=\''.strtolower($username).'\' OR email=\''.$email.'\''.$nameclause.';');
+ − 1304
if($db->numrows() > 0) {
+ − 1305
$r = 'The ';
+ − 1306
$i=0;
+ − 1307
$row = $db->fetchrow();
+ − 1308
// Wow! An error checker that actually speaks English with the properest grammar! :-P
+ − 1309
if($row['username'] == $username) { $r .= 'username'; $i++; }
+ − 1310
if($row['email'] == $email) { if($i) $r.=', '; $r .= 'e-mail address'; $i++; }
+ − 1311
if($row['real_name'] == $real_name && $real_name != '') { if($i) $r.=', and '; $r .= 'real name'; $i++; }
+ − 1312
$r .= ' that you entered ';
+ − 1313
$r .= ( $i == 1 ) ? 'is' : 'are';
+ − 1314
$r .= ' already in use by another user.';
+ − 1315
return $r;
+ − 1316
}
+ − 1317
+ − 1318
// Require the account to be activated?
+ − 1319
switch(getConfig('account_activation'))
+ − 1320
{
+ − 1321
case 'none':
+ − 1322
default:
+ − 1323
$active = '1';
+ − 1324
break;
+ − 1325
case 'user':
+ − 1326
$active = '0';
+ − 1327
break;
+ − 1328
case 'admin':
+ − 1329
$active = '0';
+ − 1330
break;
+ − 1331
}
+ − 1332
+ − 1333
// Generate a totally random activation key
+ − 1334
$actkey = sha1 ( microtime() . mt_rand() );
+ − 1335
+ − 1336
// We good, create the user
+ − 1337
$this->sql('INSERT INTO '.table_prefix.'users ( username, password, email, real_name, theme, style, reg_time, account_active, activation_key, user_level ) VALUES ( \''.$username.'\', \''.$password.'\', \''.$email.'\', \''.$real_name.'\', \''.$template->default_theme.'\', \''.$template->default_style.'\', '.time().', '.$active.', \''.$actkey.'\', '.USER_LEVEL_CHPREF.' )');
+ − 1338
+ − 1339
// Require the account to be activated?
+ − 1340
switch(getConfig('account_activation'))
+ − 1341
{
+ − 1342
case 'none':
+ − 1343
default:
+ − 1344
break;
+ − 1345
case 'user':
+ − 1346
$a = $this->send_activation_mail($username);
+ − 1347
if(!$a)
+ − 1348
{
+ − 1349
$this->admin_activation_request($username);
+ − 1350
return 'The activation e-mail could not be sent due to an internal error. This could possibly be due to an incorrect SMTP configuration. A request has been sent to the administrator to activate your account for you. ' . $a;
+ − 1351
}
+ − 1352
break;
+ − 1353
case 'admin':
+ − 1354
$this->admin_activation_request($username);
+ − 1355
break;
+ − 1356
}
+ − 1357
+ − 1358
// Leave some data behind for the hook
+ − 1359
$code = $plugins->setHook('user_registered'); // , Array('username'=>$username));
+ − 1360
foreach ( $code as $cmd )
+ − 1361
{
+ − 1362
eval($cmd);
+ − 1363
}
+ − 1364
+ − 1365
// $this->register_session($username, $password);
+ − 1366
return 'success';
+ − 1367
}
+ − 1368
+ − 1369
/**
+ − 1370
* Attempts to send an e-mail to the specified user with activation instructions.
+ − 1371
* @param string $u The usernamd of the user requesting activation
+ − 1372
* @return bool true on success, false on failure
+ − 1373
*/
+ − 1374
+ − 1375
function send_activation_mail($u, $actkey = false)
+ − 1376
{
+ − 1377
global $db, $session, $paths, $template, $plugins; // Common objects
+ − 1378
$q = $this->sql('SELECT username,email FROM '.table_prefix.'users WHERE user_id=1 OR user_level=' . USER_LEVEL_ADMIN . ' ORDER BY user_id ASC;');
+ − 1379
$un = $db->fetchrow();
+ − 1380
$admin_user = $un['username'];
+ − 1381
$q = $this->sql('SELECT username,activation_key,account_active,email FROM '.table_prefix.'users WHERE username=\''.$db->escape($u).'\';');
+ − 1382
$r = $db->fetchrow();
+ − 1383
if ( empty($r['email']) )
+ − 1384
$db->_die('BUG: $session->send_activation_mail(): no e-mail address in row');
+ − 1385
$message = 'Dear '.$u.',
+ − 1386
Thank you for registering on '.getConfig('site_name').'. Your account creation is almost complete. To complete the registration process, please click the following link or paste it into your web browser:
+ − 1387
+ − 1388
';
+ − 1389
if(isset($_SERVER['HTTPS'])) $prot = 'https';
+ − 1390
else $prot = 'http';
+ − 1391
if($_SERVER['SERVER_PORT'] == '80') $p = '';
+ − 1392
else $p = ':'.$_SERVER['SERVER_PORT'];
+ − 1393
$sidbak = false;
+ − 1394
if($this->sid_super)
+ − 1395
$sidbak = $this->sid_super;
+ − 1396
$this->sid_super = false;
+ − 1397
$aklink = makeUrlNS('Special', 'ActivateAccount/'.str_replace(' ', '_', $u).'/'. ( ( is_string($actkey) ) ? $actkey : $r['activation_key'] ) );
+ − 1398
if($sidbak)
+ − 1399
$this->sid_super = $sidbak;
+ − 1400
unset($sidbak);
+ − 1401
$message .= "$prot://".$_SERVER['HTTP_HOST'].$p.$aklink;
+ − 1402
$message .= "\n\nSincerely yours, \n$admin_user and the ".$_SERVER['HTTP_HOST']." administration team";
+ − 1403
error_reporting(E_ALL);
+ − 1404
dc_dump($r, 'session: about to send activation e-mail to '.$r['email']);
+ − 1405
if(getConfig('smtp_enabled') == '1')
+ − 1406
{
+ − 1407
$result = smtp_send_email($r['email'], getConfig('site_name').' website account activation', preg_replace("#(?<!\r)\n#s", "\n", $message), getConfig('contact_email'));
+ − 1408
if($result == 'success') $result = true;
+ − 1409
else { echo $result; $result = false; }
+ − 1410
} else {
+ − 1411
$result = mail($r['email'], getConfig('site_name').' website account activation', preg_replace("#(?<!\r)\n#s", "\n", $message), 'From: '.getConfig('contact_email'));
+ − 1412
}
+ − 1413
return $result;
+ − 1414
}
+ − 1415
+ − 1416
/**
+ − 1417
* Sends an e-mail to a user so they can reset their password.
+ − 1418
* @param int $user The user ID, or username if it's a string
+ − 1419
* @return bool true on success, false on failure
+ − 1420
*/
+ − 1421
+ − 1422
function mail_password_reset($user)
+ − 1423
{
+ − 1424
global $db, $session, $paths, $template, $plugins; // Common objects
+ − 1425
if(is_int($user))
+ − 1426
{
+ − 1427
$q = $this->sql('SELECT user_id,username,email FROM '.table_prefix.'users WHERE user_id='.$user.';'); // This is SAFE! This is only called if $user is an integer
+ − 1428
}
+ − 1429
elseif(is_string($user))
+ − 1430
{
+ − 1431
$q = $this->sql('SELECT user_id,username,email FROM '.table_prefix.'users WHERE username=\''.$db->escape($user).'\';');
+ − 1432
}
+ − 1433
else
+ − 1434
{
+ − 1435
return false;
+ − 1436
}
+ − 1437
+ − 1438
$row = $db->fetchrow();
+ − 1439
$temp_pass = $this->random_pass();
+ − 1440
+ − 1441
$this->register_temp_password($row['user_id'], $temp_pass);
+ − 1442
+ − 1443
$site_name = getConfig('site_name');
+ − 1444
+ − 1445
$message = "Dear {$row['username']},
+ − 1446
+ − 1447
Someone (hopefully you) on the {$site_name} website requested that a new password be created.
+ − 1448
+ − 1449
The request was sent from the IP address {$_SERVER['REMOTE_ADDR']}.
+ − 1450
+ − 1451
If you did not request the new password, then you do not need to do anything; the password will be invalidated after 24 hours.
+ − 1452
+ − 1453
If you did request this password, then please log in using the password shown below:
+ − 1454
+ − 1455
Password: {$temp_pass}
+ − 1456
+ − 1457
After you log in using this password, you will be able to reset your real password. You can only log in using this temporary password once.
+ − 1458
+ − 1459
Sincerely yours,
+ − 1460
The {$site_name} administration team
+ − 1461
";
+ − 1462
+ − 1463
if(getConfig('smtp_enabled') == '1')
+ − 1464
{
+ − 1465
$result = smtp_send_email($row['email'], getConfig('site_name').' password reset', preg_replace("#(?<!\r)\n#s", "\n", $message), getConfig('contact_email'));
+ − 1466
if($result == 'success')
+ − 1467
{
+ − 1468
$result = true;
+ − 1469
}
+ − 1470
else
+ − 1471
{
+ − 1472
echo '<p>'.$result.'</p>';
+ − 1473
$result = false;
+ − 1474
}
+ − 1475
} else {
+ − 1476
$result = mail($row['email'], getConfig('site_name').' password reset', preg_replace("#(?<!\r)\n#s", "\n", $message), 'From: '.getConfig('contact_email'));
+ − 1477
}
+ − 1478
return $result;
+ − 1479
}
+ − 1480
+ − 1481
/**
+ − 1482
* Sets the temporary password for the specified user to whatever is specified.
+ − 1483
* @param int $user_id
+ − 1484
* @param string $password
+ − 1485
* @return bool
+ − 1486
*/
+ − 1487
+ − 1488
function register_temp_password($user_id, $password)
+ − 1489
{
+ − 1490
$aes = new AESCrypt(AES_BITS, AES_BLOCKSIZE);
+ − 1491
$temp_pass = $aes->encrypt($password, $this->private_key, ENC_HEX);
+ − 1492
$this->sql('UPDATE '.table_prefix.'users SET temp_password=\'' . $temp_pass . '\',temp_password_time='.time().' WHERE user_id='.intval($user_id).';');
+ − 1493
}
+ − 1494
+ − 1495
/**
+ − 1496
* Sends a request to the admin panel to have the username $u activated.
+ − 1497
* @param string $u The username of the user requesting activation
+ − 1498
*/
+ − 1499
+ − 1500
function admin_activation_request($u)
+ − 1501
{
+ − 1502
global $db;
+ − 1503
$this->sql('INSERT INTO '.table_prefix.'logs(log_type, action, time_id, date_string, author, edit_summary) VALUES(\'admin\', \'activ_req\', '.time().', \''.date('d M Y h:i a').'\', \''.$this->username.'\', \''.$db->escape($u).'\');');
+ − 1504
}
+ − 1505
+ − 1506
/**
+ − 1507
* Activates a user account. If the action fails, a report is sent to the admin.
+ − 1508
* @param string $user The username of the user requesting activation
+ − 1509
* @param string $key The activation key
+ − 1510
*/
+ − 1511
+ − 1512
function activate_account($user, $key)
+ − 1513
{
+ − 1514
global $db, $session, $paths, $template, $plugins; // Common objects
+ − 1515
$this->sql('UPDATE '.table_prefix.'users SET account_active=1 WHERE username=\''.$db->escape($user).'\' AND activation_key=\''.$db->escape($key).'\';');
+ − 1516
$r = mysql_affected_rows();
+ − 1517
if ( $r > 0 )
+ − 1518
{
+ − 1519
$e = $this->sql('INSERT INTO '.table_prefix.'logs(log_type,action,time_id,date_string,author,edit_summary) VALUES(\'security\', \'activ_good\', '.time().', \''.date('d M Y h:i a').'\', \''.$db->escape($user).'\', \''.$_SERVER['REMOTE_ADDR'].'\')');
+ − 1520
}
+ − 1521
else
+ − 1522
{
+ − 1523
$e = $this->sql('INSERT INTO '.table_prefix.'logs(log_type,action,time_id,date_string,author,edit_summary) VALUES(\'security\', \'activ_bad\', '.time().', \''.date('d M Y h:i a').'\', \''.$db->escape($user).'\', \''.$_SERVER['REMOTE_ADDR'].'\')');
+ − 1524
}
+ − 1525
return $r;
+ − 1526
}
+ − 1527
+ − 1528
/**
+ − 1529
* For a given user level identifier (USER_LEVEL_*), returns a string describing that user level.
+ − 1530
* @param int User level
+ − 1531
* @return string
+ − 1532
*/
+ − 1533
+ − 1534
function userlevel_to_string($user_level)
+ − 1535
{
+ − 1536
switch ( $user_level )
+ − 1537
{
+ − 1538
case USER_LEVEL_GUEST:
+ − 1539
return 'Low - guest privileges';
+ − 1540
case USER_LEVEL_MEMBER:
+ − 1541
return 'Standard - normal member level';
+ − 1542
case USER_LEVEL_CHPREF:
+ − 1543
return 'Medium - user can change his/her own e-mail address and password';
+ − 1544
case USER_LEVEL_MOD:
+ − 1545
return 'High - moderator privileges';
+ − 1546
case USER_LEVEL_ADMIN:
+ − 1547
return 'Highest - administrative privileges';
+ − 1548
default:
+ − 1549
return "Unknown ($user_level)";
+ − 1550
}
+ − 1551
}
+ − 1552
+ − 1553
/**
+ − 1554
* Updates a user's information in the database. Note that any of the values except $user_id can be false if you want to preserve the old values.
+ − 1555
* @param int $user_id The user ID of the user to update - this cannot be changed
+ − 1556
* @param string $username The new username
+ − 1557
* @param string $old_pass The current password - only required if sessionManager::$user_level < USER_LEVEL_ADMIN. This should usually be an UNENCRYPTED string. This can also be an array - if it is, key 0 is treated as data AES-encrypted with key 1
+ − 1558
* @param string $password The new password
+ − 1559
* @param string $email The new e-mail address
+ − 1560
* @param string $realname The new real name
+ − 1561
* @param string $signature The updated forum/comment signature
+ − 1562
* @param int $user_level The updated user level
+ − 1563
* @return string 'success' if successful, or array of error strings on failure
+ − 1564
*/
+ − 1565
+ − 1566
function update_user($user_id, $username = false, $old_pass = false, $password = false, $email = false, $realname = false, $signature = false, $user_level = false)
+ − 1567
{
+ − 1568
global $db, $session, $paths, $template, $plugins; // Common objects
+ − 1569
+ − 1570
// Create some arrays
+ − 1571
+ − 1572
$errors = Array(); // Used to hold error strings
+ − 1573
$strs = Array(); // Sub-query statements
+ − 1574
+ − 1575
// Scan the user ID for problems
+ − 1576
if(intval($user_id) < 1) $errors[] = 'SQL injection attempt';
+ − 1577
+ − 1578
// Instanciate the AES encryption class
+ − 1579
$aes = new AESCrypt(AES_BITS, AES_BLOCKSIZE);
+ − 1580
+ − 1581
// If all of our input vars are false, then we've effectively done our job so get out of here
+ − 1582
if($username === false && $password === false && $email === false && $realname === false && $signature === false && $user_level === false)
+ − 1583
{
+ − 1584
// echo 'debug: $session->update_user(): success (no changes requested)';
+ − 1585
return 'success';
+ − 1586
}
+ − 1587
+ − 1588
// Initialize our authentication check
+ − 1589
$authed = false;
+ − 1590
+ − 1591
// Verify the inputted password
+ − 1592
if(is_string($old_pass))
+ − 1593
{
+ − 1594
$q = $this->sql('SELECT password FROM '.table_prefix.'users WHERE user_id='.$user_id.';');
+ − 1595
if($db->numrows() < 1)
+ − 1596
{
+ − 1597
$errors[] = 'The password data could not be selected for verification.';
+ − 1598
}
+ − 1599
else
+ − 1600
{
+ − 1601
$row = $db->fetchrow();
+ − 1602
$real = $aes->decrypt($row['password'], $this->private_key, ENC_HEX);
+ − 1603
if($real == $old_pass)
+ − 1604
$authed = true;
+ − 1605
}
+ − 1606
}
+ − 1607
+ − 1608
elseif(is_array($old_pass))
+ − 1609
{
+ − 1610
$old_pass = $aes->decrypt($old_pass[0], $old_pass[1]);
+ − 1611
$q = $this->sql('SELECT password FROM '.table_prefix.'users WHERE user_id='.$user_id.';');
+ − 1612
if($db->numrows() < 1)
+ − 1613
{
+ − 1614
$errors[] = 'The password data could not be selected for verification.';
+ − 1615
}
+ − 1616
else
+ − 1617
{
+ − 1618
$row = $db->fetchrow();
+ − 1619
$real = $aes->decrypt($row['password'], $this->private_key, ENC_HEX);
+ − 1620
if($real == $old_pass)
+ − 1621
$authed = true;
+ − 1622
}
+ − 1623
}
+ − 1624
+ − 1625
// Initialize our query
+ − 1626
$q = 'UPDATE '.table_prefix.'users SET ';
+ − 1627
+ − 1628
if($this->auth_level >= USER_LEVEL_ADMIN || $authed) // Need the current password in order to update the e-mail address, change the username, or reset the password
+ − 1629
{
+ − 1630
// Username
+ − 1631
if(is_string($username))
+ − 1632
{
+ − 1633
// Check the username for problems
+ − 1634
if(!preg_match('#^'.$this->valid_username.'$#', $username))
+ − 1635
$errors[] = 'The username you entered contains invalid characters.';
+ − 1636
$strs[] = 'username=\''.$db->escape($username).'\'';
+ − 1637
}
+ − 1638
// Password
+ − 1639
if(is_string($password) && strlen($password) >= 6)
+ − 1640
{
+ − 1641
// Password needs to be encrypted before being stashed
+ − 1642
$encpass = $aes->encrypt($password, $this->private_key, ENC_HEX);
+ − 1643
if(!$encpass)
+ − 1644
$errors[] = 'The password could not be encrypted due to an internal error.';
+ − 1645
$strs[] = 'password=\''.$encpass.'\'';
+ − 1646
}
+ − 1647
// E-mail addy
+ − 1648
if(is_string($email))
+ − 1649
{
+ − 1650
// I didn't write this regex.
+ − 1651
if(!preg_match('/^(?:[\w\d]+\.?)+@(?:(?:[\w\d]\-?)+\.)+\w{2,4}$/', $email))
+ − 1652
$errors[] = 'The e-mail address you entered is invalid.';
+ − 1653
$strs[] = 'email=\''.$db->escape($email).'\'';
+ − 1654
}
+ − 1655
}
+ − 1656
// Real name
+ − 1657
if(is_string($realname))
+ − 1658
{
+ − 1659
$strs[] = 'real_name=\''.$db->escape($realname).'\'';
+ − 1660
}
+ − 1661
// Forum/comment signature
+ − 1662
if(is_string($signature))
+ − 1663
{
+ − 1664
$strs[] = 'signature=\''.$db->escape($signature).'\'';
+ − 1665
}
+ − 1666
// User level
+ − 1667
if(is_int($user_level))
+ − 1668
{
+ − 1669
$strs[] = 'user_level='.$user_level;
+ − 1670
}
+ − 1671
+ − 1672
// Add our generated query to the query string
+ − 1673
$q .= implode(',', $strs);
+ − 1674
+ − 1675
// One last error check
+ − 1676
if(sizeof($strs) < 1) $errors[] = 'An internal error occured building the SQL query, this is a bug';
+ − 1677
if(sizeof($errors) > 0) return $errors;
+ − 1678
+ − 1679
// Free our temp arrays
+ − 1680
unset($strs, $errors);
+ − 1681
+ − 1682
// Finalize the query and run it
+ − 1683
$q .= ' WHERE user_id='.$user_id.';';
+ − 1684
$this->sql($q);
+ − 1685
+ − 1686
// We also need to trigger re-activation.
+ − 1687
if ( is_string($email) )
+ − 1688
{
+ − 1689
switch(getConfig('account_activation'))
+ − 1690
{
+ − 1691
case 'user':
+ − 1692
case 'admin':
+ − 1693
+ − 1694
if ( $session->user_level >= USER_LEVEL_MOD && getConfig('account_activation') == 'admin' )
+ − 1695
// Don't require re-activation by admins for admins
+ − 1696
break;
+ − 1697
+ − 1698
// retrieve username
+ − 1699
if ( !$username )
+ − 1700
{
+ − 1701
$q = $this->sql('SELECT username FROM '.table_prefix.'users WHERE user_id='.$user_id.';');
+ − 1702
if($db->numrows() < 1)
+ − 1703
{
+ − 1704
$errors[] = 'The username could not be selected.';
+ − 1705
}
+ − 1706
else
+ − 1707
{
+ − 1708
$row = $db->fetchrow();
+ − 1709
$username = $row['username'];
+ − 1710
}
+ − 1711
}
+ − 1712
if ( !$username )
+ − 1713
return $errors;
+ − 1714
+ − 1715
// Generate a totally random activation key
+ − 1716
$actkey = sha1 ( microtime() . mt_rand() );
+ − 1717
$a = $this->send_activation_mail($username, $actkey);
+ − 1718
if(!$a)
+ − 1719
{
+ − 1720
$this->admin_activation_request($username);
+ − 1721
}
+ − 1722
// Deactivate the account until e-mail is confirmed
+ − 1723
$q = $db->sql_query('UPDATE '.table_prefix.'users SET account_active=0,activation_key=\'' . $actkey . '\' WHERE user_id=' . $user_id . ';');
+ − 1724
break;
+ − 1725
}
+ − 1726
}
+ − 1727
+ − 1728
// Yay! We're done
+ − 1729
return 'success';
+ − 1730
}
+ − 1731
+ − 1732
#
+ − 1733
# Access Control Lists
+ − 1734
#
+ − 1735
+ − 1736
/**
+ − 1737
* Creates a new permission field in memory. If the permissions are set in the database, they are used. Otherwise, $default_perm is used.
+ − 1738
* @param string $acl_type An identifier for this field
+ − 1739
* @param int $default_perm Whether permission should be granted or not if it's not specified in the ACLs.
+ − 1740
* @param string $desc A human readable name for the permission type
+ − 1741
* @param array $deps The list of dependencies - this should be an array of ACL types
+ − 1742
* @param string $scope Which namespaces this field should apply to. This should be either a pipe-delimited list of namespace IDs or just "All".
+ − 1743
*/
+ − 1744
+ − 1745
function register_acl_type($acl_type, $default_perm = AUTH_DISALLOW, $desc = false, $deps = Array(), $scope = 'All')
+ − 1746
{
+ − 1747
if(isset($this->acl_types[$acl_type]))
+ − 1748
return false;
+ − 1749
else
+ − 1750
{
+ − 1751
if(!$desc)
+ − 1752
{
+ − 1753
$desc = capitalize_first_letter(str_replace('_', ' ', $acl_type));
+ − 1754
}
+ − 1755
$this->acl_types[$acl_type] = $default_perm;
+ − 1756
$this->acl_descs[$acl_type] = $desc;
+ − 1757
$this->acl_deps[$acl_type] = $deps;
+ − 1758
$this->acl_scope[$acl_type] = explode('|', $scope);
+ − 1759
}
+ − 1760
return true;
+ − 1761
}
+ − 1762
+ − 1763
/**
+ − 1764
* Tells us whether permission $type is allowed or not based on the current rules.
+ − 1765
* @param string $type The permission identifier ($acl_type passed to sessionManager::register_acl_type())
+ − 1766
* @param bool $no_deps If true, disables dependency checking
+ − 1767
* @return bool True if allowed, false if denied or if an error occured
+ − 1768
*/
+ − 1769
+ − 1770
function get_permissions($type, $no_deps = false)
+ − 1771
{
+ − 1772
global $db, $session, $paths, $template, $plugins; // Common objects
+ − 1773
if ( isset( $this->perms[$type] ) )
+ − 1774
{
+ − 1775
if ( $this->perms[$type] == AUTH_DENY )
+ − 1776
$ret = false;
+ − 1777
else if ( $this->perms[$type] == AUTH_WIKIMODE && $paths->wiki_mode )
+ − 1778
$ret = true;
+ − 1779
else if ( $this->perms[$type] == AUTH_WIKIMODE && !$paths->wiki_mode )
+ − 1780
$ret = false;
+ − 1781
else if ( $this->perms[$type] == AUTH_ALLOW )
+ − 1782
$ret = true;
+ − 1783
else if ( $this->perms[$type] == AUTH_DISALLOW )
+ − 1784
$ret = false;
+ − 1785
}
+ − 1786
else if(isset($this->acl_types[$type]))
+ − 1787
{
+ − 1788
if ( $this->acl_types[$type] == AUTH_DENY )
+ − 1789
$ret = false;
+ − 1790
else if ( $this->acl_types[$type] == AUTH_WIKIMODE && $paths->wiki_mode )
+ − 1791
$ret = true;
+ − 1792
else if ( $this->acl_types[$type] == AUTH_WIKIMODE && !$paths->wiki_mode )
+ − 1793
$ret = false;
+ − 1794
else if ( $this->acl_types[$type] == AUTH_ALLOW )
+ − 1795
$ret = true;
+ − 1796
else if ( $this->acl_types[$type] == AUTH_DISALLOW )
+ − 1797
$ret = false;
+ − 1798
}
+ − 1799
else
+ − 1800
{
+ − 1801
// ACL type is undefined
+ − 1802
trigger_error('Unknown access type "' . $type . '"', E_USER_WARNING);
+ − 1803
return false; // Be on the safe side and deny access
+ − 1804
}
+ − 1805
if ( !$no_deps )
+ − 1806
{
+ − 1807
if ( !$this->acl_check_deps($type) )
+ − 1808
return false;
+ − 1809
}
+ − 1810
return $ret;
+ − 1811
}
+ − 1812
+ − 1813
/**
+ − 1814
* Fetch the permissions that apply to the current user for the page specified. The object you get will have the get_permissions method
+ − 1815
* and several other abilities.
+ − 1816
* @param string $page_id
+ − 1817
* @param string $namespace
+ − 1818
* @return object
+ − 1819
*/
+ − 1820
+ − 1821
function fetch_page_acl($page_id, $namespace)
+ − 1822
{
+ − 1823
global $db, $session, $paths, $template, $plugins; // Common objects
+ − 1824
+ − 1825
if ( count ( $this->acl_base_cache ) < 1 )
+ − 1826
{
+ − 1827
// Permissions table not yet initialized
+ − 1828
return false;
+ − 1829
}
+ − 1830
+ − 1831
//if ( !isset( $paths->pages[$paths->nslist[$namespace] . $page_id] ) )
+ − 1832
//{
+ − 1833
// // Page does not exist
+ − 1834
// return false;
+ − 1835
//}
+ − 1836
+ − 1837
$object = new Session_ACLPageInfo( $page_id, $namespace, $this->acl_types, $this->acl_descs, $this->acl_deps, $this->acl_base_cache );
+ − 1838
+ − 1839
return $object;
+ − 1840
+ − 1841
}
+ − 1842
+ − 1843
/**
+ − 1844
* Read all of our permissions from the database and process/apply them. This should be called after the page is determined.
+ − 1845
* @access private
+ − 1846
*/
+ − 1847
+ − 1848
function init_permissions()
+ − 1849
{
+ − 1850
global $db, $session, $paths, $template, $plugins; // Common objects
+ − 1851
// Initialize the permissions list with some defaults
+ − 1852
$this->perms = $this->acl_types;
+ − 1853
$this->acl_defaults_used = $this->perms;
+ − 1854
+ − 1855
// Fetch sitewide defaults from the permissions table
+ − 1856
$bs = 'SELECT rules FROM '.table_prefix.'acl WHERE page_id IS NULL AND namespace IS NULL AND ( ';
+ − 1857
+ − 1858
$q = Array();
+ − 1859
$q[] = '( target_type='.ACL_TYPE_USER.' AND target_id='.$this->user_id.' )';
+ − 1860
if(count($this->groups) > 0)
+ − 1861
{
+ − 1862
foreach($this->groups as $g_id => $g_name)
+ − 1863
{
+ − 1864
$q[] = '( target_type='.ACL_TYPE_GROUP.' AND target_id='.intval($g_id).' )';
+ − 1865
}
+ − 1866
}
+ − 1867
$bs .= implode(' OR ', $q) . ' ) ORDER BY target_type ASC, target_id ASC;';
+ − 1868
$q = $this->sql($bs);
+ − 1869
if ( $row = $db->fetchrow() )
+ − 1870
{
+ − 1871
do {
+ − 1872
$rules = $this->string_to_perm($row['rules']);
+ − 1873
$is_everyone = ( $row['target_type'] == ACL_TYPE_GROUP && $row['target_id'] == 1 );
+ − 1874
$this->acl_merge_with_current($rules, $is_everyone);
+ − 1875
} while ( $row = $db->fetchrow() );
+ − 1876
}
+ − 1877
+ − 1878
// Eliminate types that don't apply to this namespace
+ − 1879
foreach ( $this->perms AS $i => $perm )
+ − 1880
{
+ − 1881
if ( !in_array ( $paths->namespace, $this->acl_scope[$i] ) && !in_array('All', $this->acl_scope[$i]) )
+ − 1882
{
+ − 1883
unset($this->perms[$i]);
+ − 1884
}
+ − 1885
}
+ − 1886
+ − 1887
// Cache the sitewide permissions for later use
+ − 1888
$this->acl_base_cache = $this->perms;
+ − 1889
+ − 1890
// Build a query to grab ACL info
+ − 1891
$bs = 'SELECT rules,target_type,target_id FROM '.table_prefix.'acl WHERE ( ';
+ − 1892
$q = Array();
+ − 1893
$q[] = '( target_type='.ACL_TYPE_USER.' AND target_id='.$this->user_id.' )';
+ − 1894
if(count($this->groups) > 0)
+ − 1895
{
+ − 1896
foreach($this->groups as $g_id => $g_name)
+ − 1897
{
+ − 1898
$q[] = '( target_type='.ACL_TYPE_GROUP.' AND target_id='.intval($g_id).' )';
+ − 1899
}
+ − 1900
}
+ − 1901
// The reason we're using an ORDER BY statement here is because ACL_TYPE_GROUP is less than ACL_TYPE_USER, causing the user's individual
+ − 1902
// permissions to override group permissions.
+ − 1903
$bs .= implode(' OR ', $q) . ' ) AND ( page_id=\''.$db->escape($paths->cpage['urlname_nons']).'\' AND namespace=\''.$db->escape($paths->namespace).'\' )
+ − 1904
ORDER BY target_type ASC, page_id ASC, namespace ASC;';
+ − 1905
$q = $this->sql($bs);
+ − 1906
if ( $row = $db->fetchrow() )
+ − 1907
{
+ − 1908
do {
+ − 1909
$rules = $this->string_to_perm($row['rules']);
+ − 1910
$is_everyone = ( $row['target_type'] == ACL_TYPE_GROUP && $row['target_id'] == 1 );
+ − 1911
$this->acl_merge_with_current($rules, $is_everyone);
+ − 1912
} while ( $row = $db->fetchrow() );
+ − 1913
}
+ − 1914
+ − 1915
}
+ − 1916
+ − 1917
/**
+ − 1918
* Extends the scope of a permission type.
+ − 1919
* @param string The name of the permission type
+ − 1920
* @param string The namespace(s) that should be covered. This can be either one namespace ID or a pipe-delimited list.
+ − 1921
* @param object Optional - the current $paths object, in case we're doing this from the acl_rule_init hook
+ − 1922
*/
+ − 1923
+ − 1924
function acl_extend_scope($perm_type, $namespaces, &$p_in)
+ − 1925
{
+ − 1926
global $db, $session, $paths, $template, $plugins; // Common objects
+ − 1927
$p_obj = ( is_object($p_in) ) ? $p_in : $paths;
+ − 1928
$nslist = explode('|', $namespaces);
+ − 1929
foreach ( $nslist as $i => $ns )
+ − 1930
{
+ − 1931
if ( !isset($p_obj->nslist[$ns]) )
+ − 1932
{
+ − 1933
unset($nslist[$i]);
+ − 1934
}
+ − 1935
else
+ − 1936
{
+ − 1937
$this->acl_scope[$perm_type][] = $ns;
+ − 1938
if ( isset($this->acl_types[$perm_type]) && !isset($this->perms[$perm_type]) )
+ − 1939
{
+ − 1940
$this->perms[$perm_type] = $this->acl_types[$perm_type];
+ − 1941
}
+ − 1942
}
+ − 1943
}
+ − 1944
}
+ − 1945
+ − 1946
/**
+ − 1947
* Converts a permissions field into a string for database insertion. Similar in spirit to serialize().
+ − 1948
* @param array $perms An associative array with only integers as values
+ − 1949
* @return string
+ − 1950
*/
+ − 1951
+ − 1952
function perm_to_string($perms)
+ − 1953
{
+ − 1954
$s = '';
+ − 1955
foreach($perms as $perm => $ac)
+ − 1956
{
+ − 1957
$s .= "$perm=$ac;";
+ − 1958
}
+ − 1959
return $s;
+ − 1960
}
+ − 1961
+ − 1962
/**
+ − 1963
* Converts a permissions string back to an array.
+ − 1964
* @param string $perms The result from sessionManager::perm_to_string()
+ − 1965
* @return array
+ − 1966
*/
+ − 1967
+ − 1968
function string_to_perm($perms)
+ − 1969
{
+ − 1970
$ret = Array();
+ − 1971
preg_match_all('#([a-z0-9_-]+)=([0-9]+);#i', $perms, $matches);
+ − 1972
foreach($matches[1] as $i => $t)
+ − 1973
{
+ − 1974
$ret[$t] = intval($matches[2][$i]);
+ − 1975
}
+ − 1976
return $ret;
+ − 1977
}
+ − 1978
+ − 1979
/**
+ − 1980
* Merges two ACL arrays. Both parameters should be permission list arrays. The second group takes precedence over the first, but AUTH_DENY always prevails.
+ − 1981
* @param array $perm1 The first set of permissions
+ − 1982
* @param array $perm2 The second set of permissions
+ − 1983
* @return array
+ − 1984
*/
+ − 1985
+ − 1986
function acl_merge($perm1, $perm2)
+ − 1987
{
+ − 1988
$ret = $perm1;
+ − 1989
foreach ( $perm2 as $type => $level )
+ − 1990
{
+ − 1991
if ( isset( $ret[$type] ) )
+ − 1992
{
+ − 1993
if ( $ret[$type] != AUTH_DENY )
+ − 1994
$ret[$type] = $level;
+ − 1995
}
+ − 1996
// else
+ − 1997
// {
+ − 1998
// $ret[$type] = $level;
+ − 1999
// }
+ − 2000
}
+ − 2001
return $ret;
+ − 2002
}
+ − 2003
+ − 2004
/**
+ − 2005
* Merges the ACL array sent with the current permissions table, deciding precedence based on whether defaults are in effect or not.
+ − 2006
* @param array The array to merge into the master ACL list
+ − 2007
* @param bool If true, $perm is treated as the "new default"
+ − 2008
* @param int 1 if this is a site-wide ACL, 2 if page-specific. Defaults to 2.
+ − 2009
*/
+ − 2010
+ − 2011
function acl_merge_with_current($perm, $is_everyone = false, $scope = 2)
+ − 2012
{
+ − 2013
foreach ( $this->perms as $i => $p )
+ − 2014
{
+ − 2015
if ( isset($perm[$i]) )
+ − 2016
{
+ − 2017
if ( $is_everyone && !$this->acl_defaults_used[$i] )
+ − 2018
continue;
+ − 2019
// Decide precedence
+ − 2020
if ( isset($this->acl_defaults_used[$i]) )
+ − 2021
{
+ − 2022
//echo "$i: default in use, overriding to: {$perm[$i]}<br />";
+ − 2023
// Defaults are in use, override
+ − 2024
$this->perms[$i] = $perm[$i];
+ − 2025
$this->acl_defaults_used[$i] = ( $is_everyone );
+ − 2026
}
+ − 2027
else
+ − 2028
{
+ − 2029
//echo "$i: default NOT in use";
+ − 2030
// Defaults are not in use, merge as normal
+ − 2031
if ( $this->perms[$i] != AUTH_DENY )
+ − 2032
{
+ − 2033
//echo ", but overriding";
+ − 2034
$this->perms[$i] = $perm[$i];
+ − 2035
}
+ − 2036
//echo "<br />";
+ − 2037
}
+ − 2038
}
+ − 2039
}
+ − 2040
}
+ − 2041
+ − 2042
/**
+ − 2043
* Merges two ACL arrays. Both parameters should be permission list arrays. The second group takes precedence
+ − 2044
* over the first, without exceptions. This is used to merge the hardcoded defaults with admin-specified
+ − 2045
* defaults, which take precedence.
+ − 2046
* @param array $perm1 The first set of permissions
+ − 2047
* @param array $perm2 The second set of permissions
+ − 2048
* @return array
+ − 2049
*/
+ − 2050
+ − 2051
function acl_merge_complete($perm1, $perm2)
+ − 2052
{
+ − 2053
$ret = $perm1;
+ − 2054
foreach ( $perm2 as $type => $level )
+ − 2055
{
+ − 2056
$ret[$type] = $level;
+ − 2057
}
+ − 2058
return $ret;
+ − 2059
}
+ − 2060
+ − 2061
/**
+ − 2062
* Tell us if the dependencies for a given permission are met.
+ − 2063
* @param string The ACL permission ID
+ − 2064
* @return bool
+ − 2065
*/
+ − 2066
+ − 2067
function acl_check_deps($type)
+ − 2068
{
+ − 2069
if(!isset($this->acl_deps[$type])) // This will only happen if the permissions table is hacked or improperly accessed
+ − 2070
return true;
+ − 2071
if(sizeof($this->acl_deps[$type]) < 1)
+ − 2072
return true;
+ − 2073
$deps = $this->acl_deps[$type];
+ − 2074
while(true)
+ − 2075
{
+ − 2076
$full_resolved = true;
+ − 2077
$j = sizeof($deps);
+ − 2078
for ( $i = 0; $i < $j; $i++ )
+ − 2079
{
+ − 2080
$b = $deps;
+ − 2081
$deps = array_merge($deps, $this->acl_deps[$deps[$i]]);
+ − 2082
if( $b == $deps )
+ − 2083
{
+ − 2084
break 2;
+ − 2085
}
+ − 2086
$j = sizeof($deps);
+ − 2087
}
+ − 2088
}
+ − 2089
//die('<pre>'.print_r($deps, true).'</pre>');
+ − 2090
foreach($deps as $d)
+ − 2091
{
+ − 2092
if ( !$this->get_permissions($d) )
+ − 2093
{
+ − 2094
return false;
+ − 2095
}
+ − 2096
}
+ − 2097
return true;
+ − 2098
}
+ − 2099
+ − 2100
/**
+ − 2101
* Makes a CAPTCHA code and caches the code in the database
+ − 2102
* @param int $len The length of the code, in bytes
+ − 2103
* @return string A unique identifier assigned to the code. This hash should be passed to sessionManager::getCaptcha() to retrieve the code.
+ − 2104
*/
+ − 2105
+ − 2106
function make_captcha($len = 7)
+ − 2107
{
+ − 2108
$chars = array('A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', '1', '2', '3', '4', '5', '6', '7', '8', '9');
+ − 2109
$s = '';
+ − 2110
for($i=0;$i<$len;$i++) $s .= $chars[mt_rand(0, count($chars)-1)];
+ − 2111
$hash = md5(microtime() . mt_rand());
+ − 2112
$this->sql('INSERT INTO '.table_prefix.'session_keys(session_key,salt,auth_level,source_ip,user_id) VALUES(\''.$hash.'\', \''.$s.'\', -1, \''.ip2hex($_SERVER['REMOTE_ADDR']).'\', -2);');
+ − 2113
return $hash;
+ − 2114
}
+ − 2115
+ − 2116
/**
+ − 2117
* For the given code ID, returns the correct CAPTCHA code, or false on failure
+ − 2118
* @param string $hash The unique ID assigned to the code
+ − 2119
* @return string The correct confirmation code
+ − 2120
*/
+ − 2121
+ − 2122
function get_captcha($hash)
+ − 2123
{
+ − 2124
global $db, $session, $paths, $template, $plugins; // Common objects
+ − 2125
$s = $this->sql('SELECT salt FROM '.table_prefix.'session_keys WHERE session_key=\''.$db->escape($hash).'\' AND source_ip=\''.ip2hex($_SERVER['REMOTE_ADDR']).'\';');
+ − 2126
if($db->numrows() < 1) return false;
+ − 2127
$r = $db->fetchrow();
+ − 2128
return $r['salt'];
+ − 2129
}
+ − 2130
+ − 2131
/**
+ − 2132
* Deletes all CAPTCHA codes cached in the DB for this user.
+ − 2133
*/
+ − 2134
+ − 2135
function kill_captcha()
+ − 2136
{
+ − 2137
$this->sql('DELETE FROM '.table_prefix.'session_keys WHERE user_id=-2 AND source_ip=\''.ip2hex($_SERVER['REMOTE_ADDR']).'\';');
+ − 2138
}
+ − 2139
+ − 2140
/**
+ − 2141
* Generates a random password.
+ − 2142
* @param int $length Optional - length of password
+ − 2143
* @return string
+ − 2144
*/
+ − 2145
+ − 2146
function random_pass($length = 10)
+ − 2147
{
+ − 2148
$valid_chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_+@#%&<>';
+ − 2149
$valid_chars = enano_str_split($valid_chars);
+ − 2150
$ret = '';
+ − 2151
for ( $i = 0; $i < $length; $i++ )
+ − 2152
{
+ − 2153
$ret .= $valid_chars[mt_rand(0, count($valid_chars)-1)];
+ − 2154
}
+ − 2155
return $ret;
+ − 2156
}
+ − 2157
+ − 2158
/**
+ − 2159
* Generates some Javascript that calls the AES encryption library.
+ − 2160
* @param string The name of the form
+ − 2161
* @param string The name of the password field
+ − 2162
* @param string The name of the field that switches encryption on or off
+ − 2163
* @param string The name of the field that contains the encryption key
+ − 2164
* @param string The name of the field that will contain the encrypted password
+ − 2165
* @param string The name of the field that handles MD5 challenge data
+ − 2166
* @return string
+ − 2167
*/
+ − 2168
+ − 2169
function aes_javascript($form_name, $pw_field, $use_crypt, $crypt_key, $crypt_data, $challenge)
+ − 2170
{
+ − 2171
$code = '
+ − 2172
<script type="text/javascript">
+ − 2173
disableJSONExts();
+ − 2174
str = \'\';
+ − 2175
for(i=0;i<keySizeInBits/4;i++) str+=\'0\';
+ − 2176
var key = hexToByteArray(str);
+ − 2177
var pt = hexToByteArray(str);
+ − 2178
var ct = rijndaelEncrypt(pt, key, \'ECB\');
+ − 2179
var ct = byteArrayToHex(ct);
+ − 2180
switch(keySizeInBits)
+ − 2181
{
+ − 2182
case 128:
+ − 2183
v = \'66e94bd4ef8a2c3b884cfa59ca342b2e\';
+ − 2184
break;
+ − 2185
case 192:
+ − 2186
v = \'aae06992acbf52a3e8f4a96ec9300bd7aae06992acbf52a3e8f4a96ec9300bd7\';
+ − 2187
break;
+ − 2188
case 256:
+ − 2189
v = \'dc95c078a2408989ad48a21492842087dc95c078a2408989ad48a21492842087\';
+ − 2190
break;
+ − 2191
}
+ − 2192
var testpassed = ' . ( ( isset($_GET['use_crypt']) && $_GET['use_crypt']=='0') ? 'false; // CRYPTO-AUTH DISABLED ON USER REQUEST // ' : '' ) . '( ct == v && md5_vm_test() );
+ − 2193
var frm = document.forms.'.$form_name.';
+ − 2194
if(testpassed)
+ − 2195
{
+ − 2196
frm.'.$use_crypt.'.value = \'yes\';
+ − 2197
var cryptkey = frm.'.$crypt_key.'.value;
+ − 2198
frm.'.$crypt_key.'.value = hex_md5(cryptkey);
+ − 2199
cryptkey = hexToByteArray(cryptkey);
+ − 2200
if(!cryptkey || ( ( typeof cryptkey == \'string\' || typeof cryptkey == \'object\' ) ) && cryptkey.length != keySizeInBits / 8 )
+ − 2201
{
+ − 2202
if ( frm._login ) frm._login.disabled = true;
+ − 2203
len = ( typeof cryptkey == \'string\' || typeof cryptkey == \'object\' ) ? \'\\nLen: \'+cryptkey.length : \'\';
+ − 2204
alert(\'The key is messed up\\nType: \'+typeof(cryptkey)+len);
+ − 2205
}
+ − 2206
}
+ − 2207
if(frm.username) frm.username.focus();
+ − 2208
function runEncryption()
+ − 2209
{
+ − 2210
if(testpassed)
+ − 2211
{
+ − 2212
pass = frm.'.$pw_field.'.value;
+ − 2213
chal = frm.'.$challenge.'.value;
+ − 2214
challenge = hex_md5(pass + chal) + chal;
+ − 2215
frm.'.$challenge.'.value = challenge;
+ − 2216
pass = stringToByteArray(pass);
+ − 2217
cryptstring = rijndaelEncrypt(pass, cryptkey, \'ECB\');
+ − 2218
if(!cryptstring)
+ − 2219
{
+ − 2220
return false;
+ − 2221
}
+ − 2222
cryptstring = byteArrayToHex(cryptstring);
+ − 2223
frm.'.$crypt_data.'.value = cryptstring;
+ − 2224
frm.'.$pw_field.'.value = \'\';
+ − 2225
}
+ − 2226
return false;
+ − 2227
}
+ − 2228
</script>
+ − 2229
';
+ − 2230
return $code;
+ − 2231
}
+ − 2232
+ − 2233
}
+ − 2234
+ − 2235
/**
+ − 2236
* Class used to fetch permissions for a specific page. Used internally by SessionManager.
+ − 2237
* @package Enano
+ − 2238
* @subpackage Session manager
+ − 2239
* @license http://www.gnu.org/copyleft/gpl.html
+ − 2240
* @access private
+ − 2241
*/
+ − 2242
+ − 2243
class Session_ACLPageInfo {
+ − 2244
+ − 2245
/**
+ − 2246
* The page ID of this ACL info package
+ − 2247
* @var string
+ − 2248
*/
+ − 2249
+ − 2250
var $page_id;
+ − 2251
+ − 2252
/**
+ − 2253
* The namespace of the page being checked
+ − 2254
* @var string
+ − 2255
*/
+ − 2256
+ − 2257
var $namespace;
+ − 2258
+ − 2259
/**
+ − 2260
* Our list of permission types.
+ − 2261
* @access private
+ − 2262
* @var array
+ − 2263
*/
+ − 2264
+ − 2265
var $acl_types = Array();
+ − 2266
+ − 2267
/**
+ − 2268
* The list of descriptions for the permission types
+ − 2269
* @var array
+ − 2270
*/
+ − 2271
+ − 2272
var $acl_descs = Array();
+ − 2273
+ − 2274
/**
+ − 2275
* A list of dependencies for ACL types.
+ − 2276
* @var array
+ − 2277
*/
+ − 2278
+ − 2279
var $acl_deps = Array();
+ − 2280
+ − 2281
/**
+ − 2282
* Our tell-all list of permissions.
+ − 2283
* @access private - or, preferably, protected...too bad this has to be PHP4 compatible
+ − 2284
* @var array
+ − 2285
*/
+ − 2286
+ − 2287
var $perms = Array();
+ − 2288
+ − 2289
/**
+ − 2290
* Constructor.
+ − 2291
* @param string $page_id The ID of the page to check
+ − 2292
* @param string $namespace The namespace of the page to check.
+ − 2293
* @param array $acl_types List of ACL types
+ − 2294
* @param array $acl_descs List of human-readable descriptions for permissions (associative)
+ − 2295
* @param array $acl_deps List of dependencies for permissions. For example, viewing history/diffs depends on the ability to read the page.
+ − 2296
* @param array $base What to start with - this is an attempt to reduce the number of SQL queries.
+ − 2297
*/
+ − 2298
+ − 2299
function Session_ACLPageInfo($page_id, $namespace, $acl_types, $acl_descs, $acl_deps, $base)
+ − 2300
{
+ − 2301
global $db, $session, $paths, $template, $plugins; // Common objects
+ − 2302
+ − 2303
$this->perms = $session->acl_merge_complete($acl_types, $base);
+ − 2304
$this->acl_deps = $acl_deps;
+ − 2305
$this->acl_types = $acl_types;
+ − 2306
$this->acl_descs = $acl_descs;
+ − 2307
+ − 2308
// Build a query to grab ACL info
+ − 2309
$bs = 'SELECT rules FROM '.table_prefix.'acl WHERE ( ';
+ − 2310
$q = Array();
+ − 2311
$q[] = '( target_type='.ACL_TYPE_USER.' AND target_id='.$session->user_id.' )';
+ − 2312
if(count($session->groups) > 0)
+ − 2313
{
+ − 2314
foreach($session->groups as $g_id => $g_name)
+ − 2315
{
+ − 2316
$q[] = '( target_type='.ACL_TYPE_GROUP.' AND target_id='.intval($g_id).' )';
+ − 2317
}
+ − 2318
}
+ − 2319
// The reason we're using an ORDER BY statement here is because ACL_TYPE_GROUP is less than ACL_TYPE_USER, causing the user's individual
+ − 2320
// permissions to override group permissions.
+ − 2321
$bs .= implode(' OR ', $q) . ' ) AND ( page_id=\''.$db->escape($page_id).'\' AND namespace=\''.$db->escape($namespace).'\' )
+ − 2322
ORDER BY target_type ASC, page_id ASC, namespace ASC;';
+ − 2323
$q = $session->sql($bs);
+ − 2324
if ( $row = $db->fetchrow() )
+ − 2325
{
+ − 2326
do {
+ − 2327
$rules = $session->string_to_perm($row['rules']);
+ − 2328
$this->perms = $session->acl_merge($this->perms, $rules);
+ − 2329
} while ( $row = $db->fetchrow() );
+ − 2330
}
+ − 2331
+ − 2332
$this->page_id = $page_id;
+ − 2333
$this->namespace = $namespace;
+ − 2334
}
+ − 2335
+ − 2336
/**
+ − 2337
* Tells us whether permission $type is allowed or not based on the current rules.
+ − 2338
* @param string $type The permission identifier ($acl_type passed to sessionManager::register_acl_type())
+ − 2339
* @param bool $no_deps If true, disables dependency checking
+ − 2340
* @return bool True if allowed, false if denied or if an error occured
+ − 2341
*/
+ − 2342
+ − 2343
function get_permissions($type, $no_deps = false)
+ − 2344
{
+ − 2345
global $db, $session, $paths, $template, $plugins; // Common objects
+ − 2346
if ( isset( $this->perms[$type] ) )
+ − 2347
{
+ − 2348
if ( $this->perms[$type] == AUTH_DENY )
+ − 2349
$ret = false;
+ − 2350
else if ( $this->perms[$type] == AUTH_WIKIMODE &&
+ − 2351
( isset($paths->pages[$paths->nslist[$this->namespace].$this->page_id]) &&
+ − 2352
( $paths->pages[$paths->nslist[$this->namespace].$this->page_id]['wiki_mode'] == '1' ||
+ − 2353
( $paths->pages[$paths->nslist[$this->namespace].$this->page_id]['wiki_mode'] == '2'
+ − 2354
&& getConfig('wiki_mode') == '1'
+ − 2355
) ) ) )
+ − 2356
$ret = true;
+ − 2357
else if ( $this->perms[$type] == AUTH_WIKIMODE && (
+ − 2358
!isset($paths->pages[$paths->nslist[$this->namespace].$this->page_id])
+ − 2359
|| (
+ − 2360
isset($paths->pages[$paths->nslist[$this->namespace].$this->page_id]) && (
+ − 2361
$paths->pages[$paths->nslist[$this->namespace].$this->page_id]['wiki_mode'] == '0'
+ − 2362
|| (
+ − 2363
$paths->pages[$paths->nslist[$this->namespace].$this->page_id]['wiki_mode'] == '2' && getConfig('wiki_mode') != '1'
+ − 2364
) ) ) ) )
+ − 2365
$ret = false;
+ − 2366
else if ( $this->perms[$type] == AUTH_ALLOW )
+ − 2367
$ret = true;
+ − 2368
else if ( $this->perms[$type] == AUTH_DISALLOW )
+ − 2369
$ret = false;
+ − 2370
}
+ − 2371
else if(isset($this->acl_types[$type]))
+ − 2372
{
+ − 2373
if ( $this->acl_types[$type] == AUTH_DENY )
+ − 2374
$ret = false;
+ − 2375
else if ( $this->acl_types[$type] == AUTH_WIKIMODE && $paths->wiki_mode )
+ − 2376
$ret = true;
+ − 2377
else if ( $this->acl_types[$type] == AUTH_WIKIMODE && !$paths->wiki_mode )
+ − 2378
$ret = false;
+ − 2379
else if ( $this->acl_types[$type] == AUTH_ALLOW )
+ − 2380
$ret = true;
+ − 2381
else if ( $this->acl_types[$type] == AUTH_DISALLOW )
+ − 2382
$ret = false;
+ − 2383
}
+ − 2384
else
+ − 2385
{
+ − 2386
// ACL type is undefined
+ − 2387
trigger_error('Unknown access type "' . $type . '"', E_USER_WARNING);
+ − 2388
return false; // Be on the safe side and deny access
+ − 2389
}
+ − 2390
if ( !$no_deps )
+ − 2391
{
+ − 2392
if ( !$this->acl_check_deps($type) )
+ − 2393
return false;
+ − 2394
}
+ − 2395
return $ret;
+ − 2396
}
+ − 2397
+ − 2398
/**
+ − 2399
* Tell us if the dependencies for a given permission are met.
+ − 2400
* @param string The ACL permission ID
+ − 2401
* @return bool
+ − 2402
*/
+ − 2403
+ − 2404
function acl_check_deps($type)
+ − 2405
{
+ − 2406
if(!isset($this->acl_deps[$type])) // This will only happen if the permissions table is hacked or improperly accessed
+ − 2407
return true;
+ − 2408
if(sizeof($this->acl_deps[$type]) < 1)
+ − 2409
return true;
+ − 2410
$deps = $this->acl_deps[$type];
+ − 2411
while(true)
+ − 2412
{
+ − 2413
$full_resolved = true;
+ − 2414
$j = sizeof($deps);
+ − 2415
for ( $i = 0; $i < $j; $i++ )
+ − 2416
{
+ − 2417
$b = $deps;
+ − 2418
$deps = array_merge($deps, $this->acl_deps[$deps[$i]]);
+ − 2419
if( $b == $deps )
+ − 2420
{
+ − 2421
break 2;
+ − 2422
}
+ − 2423
$j = sizeof($deps);
+ − 2424
}
+ − 2425
}
+ − 2426
//die('<pre>'.print_r($deps, true).'</pre>');
+ − 2427
foreach($deps as $d)
+ − 2428
{
+ − 2429
if ( !$this->get_permissions($d) )
+ − 2430
{
+ − 2431
return false;
+ − 2432
}
+ − 2433
}
+ − 2434
return true;
+ − 2435
}
+ − 2436
+ − 2437
}
+ − 2438
+ − 2439
?>