Blame Identity/Webenv/phpBB/3.0.4/includes/session.php

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/**
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*
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* @package phpBB3
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* @version $Id: session.php 9170 2008-12-04 12:56:12Z toonarmy $
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* @copyright (c) 2005 phpBB Group
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* @license http://opensource.org/licenses/gpl-license.php GNU Public License
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*
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*/
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/**
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* @ignore
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*/
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if (!defined('IN_PHPBB'))
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{
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	exit;
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}
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/**
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* Session class
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* @package phpBB3
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*/
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class session
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{
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	var $cookie_data = array();
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	var $page = array();
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	var $data = array();
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	var $browser = '';
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	var $forwarded_for = '';
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	var $host = '';
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	var $session_id = '';
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	var $ip = '';
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	var $load = 0;
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	var $time_now = 0;
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	var $update_session_page = true;
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	/**
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	* Extract current session page
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	*
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	* @param string $root_path current root path (phpbb_root_path)
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	*/
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	function extract_current_page($root_path)
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	{
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		$page_array = array();
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		// First of all, get the request uri...
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		$script_name = (!empty($_SERVER['PHP_SELF'])) ? $_SERVER['PHP_SELF'] : getenv('PHP_SELF');
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		$args = (!empty($_SERVER['QUERY_STRING'])) ? explode('&', $_SERVER['QUERY_STRING']) : explode('&', getenv('QUERY_STRING'));
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		// If we are unable to get the script name we use REQUEST_URI as a failover and note it within the page array for easier support...
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		if (!$script_name)
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		{
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			$script_name = (!empty($_SERVER['REQUEST_URI'])) ? $_SERVER['REQUEST_URI'] : getenv('REQUEST_URI');
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			$script_name = (($pos = strpos($script_name, '?')) !== false) ? substr($script_name, 0, $pos) : $script_name;
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			$page_array['failover'] = 1;
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		}
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		// Replace backslashes and doubled slashes (could happen on some proxy setups)
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		$script_name = str_replace(array('\\', '//'), '/', $script_name);
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		// Now, remove the sid and let us get a clean query string...
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		$use_args = array();
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		// Since some browser do not encode correctly we need to do this with some "special" characters...
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		// " -> %22, ' => %27, < -> %3C, > -> %3E
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		$find = array('"', "'", '<', '>');
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		$replace = array('%22', '%27', '%3C', '%3E');
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		foreach ($args as $key => $argument)
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		{
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			if (strpos($argument, 'sid=') === 0)
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			{
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				continue;
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			}
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			$use_args[] = str_replace($find, $replace, $argument);
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		}
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		unset($args);
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		// The following examples given are for an request uri of {path to the phpbb directory}/adm/index.php?i=10&b=2
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		// The current query string
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		$query_string = trim(implode('&', $use_args));
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		// basenamed page name (for example: index.php)
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		$page_name = basename($script_name);
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		$page_name = urlencode(htmlspecialchars($page_name));
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		// current directory within the phpBB root (for example: adm)
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		$root_dirs = explode('/', str_replace('\\', '/', phpbb_realpath($root_path)));
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		$page_dirs = explode('/', str_replace('\\', '/', phpbb_realpath('./')));
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		$intersection = array_intersect_assoc($root_dirs, $page_dirs);
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		$root_dirs = array_diff_assoc($root_dirs, $intersection);
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		$page_dirs = array_diff_assoc($page_dirs, $intersection);
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		$page_dir = str_repeat('../', sizeof($root_dirs)) . implode('/', $page_dirs);
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		if ($page_dir && substr($page_dir, -1, 1) == '/')
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		{
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			$page_dir = substr($page_dir, 0, -1);
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		}
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		// Current page from phpBB root (for example: adm/index.php?i=10&b=2)
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		$page = (($page_dir) ? $page_dir . '/' : '') . $page_name . (($query_string) ? "?$query_string" : '');
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		// The script path from the webroot to the current directory (for example: /phpBB3/adm/) : always prefixed with / and ends in /
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		$script_path = trim(str_replace('\\', '/', dirname($script_name)));
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		// The script path from the webroot to the phpBB root (for example: /phpBB3/)
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		$script_dirs = explode('/', $script_path);
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		array_splice($script_dirs, -sizeof($page_dirs));
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		$root_script_path = implode('/', $script_dirs) . (sizeof($root_dirs) ? '/' . implode('/', $root_dirs) : '');
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		// We are on the base level (phpBB root == webroot), lets adjust the variables a bit...
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		if (!$root_script_path)
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		{
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			$root_script_path = ($page_dir) ? str_replace($page_dir, '', $script_path) : $script_path;
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		}
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		$script_path .= (substr($script_path, -1, 1) == '/') ? '' : '/';
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		$root_script_path .= (substr($root_script_path, -1, 1) == '/') ? '' : '/';
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		$page_array += array(
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			'page_name'			=> $page_name,
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			'page_dir'			=> $page_dir,
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			'query_string'		=> $query_string,
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			'script_path'		=> str_replace(' ', '%20', htmlspecialchars($script_path)),
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			'root_script_path'	=> str_replace(' ', '%20', htmlspecialchars($root_script_path)),
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			'page'				=> $page,
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			'forum'				=> (isset($_REQUEST['f']) && $_REQUEST['f'] > 0) ? (int) $_REQUEST['f'] : 0,
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		);
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		return $page_array;
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	}
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	/**
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	* Get valid hostname/port. HTTP_HOST is used, SERVER_NAME if HTTP_HOST not present.
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	*/
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	function extract_current_hostname()
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	{
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		global $config;
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		// Get hostname
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		$host = (!empty($_SERVER['HTTP_HOST'])) ? $_SERVER['HTTP_HOST'] : ((!empty($_SERVER['SERVER_NAME'])) ? $_SERVER['SERVER_NAME'] : getenv('SERVER_NAME'));
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		// Should be a string and lowered
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		$host = (string) strtolower($host);
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		// If host is equal the cookie domain or the server name (if config is set), then we assume it is valid
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		if ((isset($config['cookie_domain']) && $host === $config['cookie_domain']) || (isset($config['server_name']) && $host === $config['server_name']))
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		{
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			return $host;
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		}
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		// Is the host actually a IP? If so, we use the IP... (IPv4)
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		if (long2ip(ip2long($host)) === $host)
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		{
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			return $host;
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		}
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		// Now return the hostname (this also removes any port definition). The http:// is prepended to construct a valid URL, hosts never have a scheme assigned
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		$host = @parse_url('http://' . $host);
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		$host = (!empty($host['host'])) ? $host['host'] : '';
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		// Remove any portions not removed by parse_url (#)
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		$host = str_replace('#', '', $host);
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		// If, by any means, the host is now empty, we will use a "best approach" way to guess one
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		if (empty($host))
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		{
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			if (!empty($config['server_name']))
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			{
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				$host = $config['server_name'];
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			}
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			else if (!empty($config['cookie_domain']))
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			{
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				$host = (strpos($config['cookie_domain'], '.') === 0) ? substr($config['cookie_domain'], 1) : $config['cookie_domain'];
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			}
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			else
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			{
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				// Set to OS hostname or localhost
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				$host = (function_exists('php_uname')) ? php_uname('n') : 'localhost';
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			}
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		}
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		// It may be still no valid host, but for sure only a hostname (we may further expand on the cookie domain... if set)
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		return $host;
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	}
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	/**
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	* Start session management
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	*
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	* This is where all session activity begins. We gather various pieces of
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	* information from the client and server. We test to see if a session already
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	* exists. If it does, fine and dandy. If it doesn't we'll go on to create a
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	* new one ... pretty logical heh? We also examine the system load (if we're
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	* running on a system which makes such information readily available) and
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	* halt if it's above an admin definable limit.
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	*
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	* @param bool $update_session_page if true the session page gets updated.
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	*			This can be set to circumvent certain scripts to update the users last visited page.
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	*/
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	function session_begin($update_session_page = true)
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	{
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		global $phpEx, $SID, $_SID, $_EXTRA_URL, $db, $config, $phpbb_root_path;
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		// Give us some basic information
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		$this->time_now				= time();
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		$this->cookie_data			= array('u' => 0, 'k' => '');
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		$this->update_session_page	= $update_session_page;
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		$this->browser				= (!empty($_SERVER['HTTP_USER_AGENT'])) ? htmlspecialchars((string) $_SERVER['HTTP_USER_AGENT']) : '';
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		$this->referer				= (!empty($_SERVER['HTTP_REFERER'])) ? htmlspecialchars((string) $_SERVER['HTTP_REFERER']) : '';
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		$this->forwarded_for		= (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) ? (string) $_SERVER['HTTP_X_FORWARDED_FOR'] : '';
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		$this->host					= $this->extract_current_hostname();
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		$this->page					= $this->extract_current_page($phpbb_root_path);
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		// if the forwarded for header shall be checked we have to validate its contents
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		if ($config['forwarded_for_check'])
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		{
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			$this->forwarded_for = preg_replace('#, +#', ', ', $this->forwarded_for);
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			// split the list of IPs
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			$ips = explode(', ', $this->forwarded_for);
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			foreach ($ips as $ip)
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			{
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				// check IPv4 first, the IPv6 is hopefully only going to be used very seldomly
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				if (!empty($ip) && !preg_match(get_preg_expression('ipv4'), $ip) && !preg_match(get_preg_expression('ipv6'), $ip))
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				{
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					// contains invalid data, don't use the forwarded for header
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					$this->forwarded_for = '';
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					break;
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				}
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			}
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		}
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		else
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		{
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			$this->forwarded_for = '';
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		}
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		if (isset($_COOKIE[$config['cookie_name'] . '_sid']) || isset($_COOKIE[$config['cookie_name'] . '_u']))
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		{
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			$this->cookie_data['u'] = request_var($config['cookie_name'] . '_u', 0, false, true);
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			$this->cookie_data['k'] = request_var($config['cookie_name'] . '_k', '', false, true);
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			$this->session_id 		= request_var($config['cookie_name'] . '_sid', '', false, true);
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			$SID = (defined('NEED_SID')) ? '?sid=' . $this->session_id : '?sid=';
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			$_SID = (defined('NEED_SID')) ? $this->session_id : '';
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			if (empty($this->session_id))
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			{
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				$this->session_id = $_SID = request_var('sid', '');
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				$SID = '?sid=' . $this->session_id;
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				$this->cookie_data = array('u' => 0, 'k' => '');
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			}
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		}
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		else
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		{
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			$this->session_id = $_SID = request_var('sid', '');
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			$SID = '?sid=' . $this->session_id;
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		}
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		$_EXTRA_URL = array();
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		// Why no forwarded_for et al? Well, too easily spoofed. With the results of my recent requests
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		// it's pretty clear that in the majority of cases you'll at least be left with a proxy/cache ip.
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		$this->ip = (!empty($_SERVER['REMOTE_ADDR'])) ? htmlspecialchars($_SERVER['REMOTE_ADDR']) : '';
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		$this->load = false;
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		// Load limit check (if applicable)
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		if ($config['limit_load'] || $config['limit_search_load'])
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		{
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			if ((function_exists('sys_getloadavg') && $load = sys_getloadavg()) || ($load = explode(' ', @file_get_contents('/proc/loadavg'))))
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			{
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				$this->load = array_slice($load, 0, 1);
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				$this->load = floatval($this->load[0]);
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			}
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			else
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			{
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				set_config('limit_load', '0');
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				set_config('limit_search_load', '0');
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			}
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		}
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		// Is session_id is set or session_id is set and matches the url param if required
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		if (!empty($this->session_id) && (!defined('NEED_SID') || (isset($_GET['sid']) && $this->session_id === $_GET['sid'])))
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		{
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			$sql = 'SELECT u.*, s.*
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				FROM ' . SESSIONS_TABLE . ' s, ' . USERS_TABLE . " u
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				WHERE s.session_id = '" . $db->sql_escape($this->session_id) . "'
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					AND u.user_id = s.session_user_id";
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			$result = $db->sql_query($sql);
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			$this->data = $db->sql_fetchrow($result);
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			$db->sql_freeresult($result);
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			// Did the session exist in the DB?
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			if (isset($this->data['user_id']))
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			{
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				// Validate IP length according to admin ... enforces an IP
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				// check on bots if admin requires this
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//				$quadcheck = ($config['ip_check_bot'] && $this->data['user_type'] & USER_BOT) ? 4 : $config['ip_check'];
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				if (strpos($this->ip, ':') !== false && strpos($this->data['session_ip'], ':') !== false)
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				{
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					$s_ip = short_ipv6($this->data['session_ip'], $config['ip_check']);
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					$u_ip = short_ipv6($this->ip, $config['ip_check']);
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				}
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				else
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				{
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					$s_ip = implode('.', array_slice(explode('.', $this->data['session_ip']), 0, $config['ip_check']));
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					$u_ip = implode('.', array_slice(explode('.', $this->ip), 0, $config['ip_check']));
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				}
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				$s_browser = ($config['browser_check']) ? trim(strtolower(substr($this->data['session_browser'], 0, 149))) : '';
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				$u_browser = ($config['browser_check']) ? trim(strtolower(substr($this->browser, 0, 149))) : '';
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				$s_forwarded_for = ($config['forwarded_for_check']) ? substr($this->data['session_forwarded_for'], 0, 254) : '';
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				$u_forwarded_for = ($config['forwarded_for_check']) ? substr($this->forwarded_for, 0, 254) : '';
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				// referer checks
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				// The @ before $config['referer_validation'] suppresses notices present while running the updater
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				$check_referer_path = (@$config['referer_validation'] == REFERER_VALIDATE_PATH);
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				$referer_valid = true;
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				// we assume HEAD and TRACE to be foul play and thus only whitelist GET
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				if (@$config['referer_validation'] && isset($_SERVER['REQUEST_METHOD']) && strtolower($_SERVER['REQUEST_METHOD']) !== 'get')
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				{
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					$referer_valid = $this->validate_referer($check_referer_path);
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				}
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				if ($u_ip === $s_ip && $s_browser === $u_browser && $s_forwarded_for === $u_forwarded_for && $referer_valid)
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				{
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					$session_expired = false;
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					// Check whether the session is still valid if we have one
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					$method = basename(trim($config['auth_method']));
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					include_once($phpbb_root_path . 'includes/auth/auth_' . $method . '.' . $phpEx);
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					$method = 'validate_session_' . $method;
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					if (function_exists($method))
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					{
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						if (!$method($this->data))
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						{
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							$session_expired = true;
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						}
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					}
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					if (!$session_expired)
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					{
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						// Check the session length timeframe if autologin is not enabled.
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						// Else check the autologin length... and also removing those having autologin enabled but no longer allowed board-wide.
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						if (!$this->data['session_autologin'])
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						{
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							if ($this->data['session_time'] < $this->time_now - ($config['session_length'] + 60))
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							{
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								$session_expired = true;
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							}
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						}
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						else if (!$config['allow_autologin'] || ($config['max_autologin_time'] && $this->data['session_time'] < $this->time_now - (86400 * (int) $config['max_autologin_time']) + 60))
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						{
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							$session_expired = true;
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						}
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					}
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					if (!$session_expired)
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					{
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						// Only update session DB a minute or so after last update or if page changes
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						if ($this->time_now - $this->data['session_time'] > 60 || ($this->update_session_page && $this->data['session_page'] != $this->page['page']))
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						{
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							$sql_ary = array('session_time' => $this->time_now);
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							if ($this->update_session_page)
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							{
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								$sql_ary['session_page'] = substr($this->page['page'], 0, 199);
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								$sql_ary['session_forum_id'] = $this->page['forum'];
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							}
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							$db->sql_return_on_error(true);
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							$sql = 'UPDATE ' . SESSIONS_TABLE . ' SET ' . $db->sql_build_array('UPDATE', $sql_ary) . "
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								WHERE session_id = '" . $db->sql_escape($this->session_id) . "'";
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							$result = $db->sql_query($sql);
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							$db->sql_return_on_error(false);
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							// If the database is not yet updated, there will be an error due to the session_forum_id
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							// @todo REMOVE for 3.0.2
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							if ($result === false)
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							{
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								unset($sql_ary['session_forum_id']);
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								$sql = 'UPDATE ' . SESSIONS_TABLE . ' SET ' . $db->sql_build_array('UPDATE', $sql_ary) . "
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									WHERE session_id = '" . $db->sql_escape($this->session_id) . "'";
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								$db->sql_query($sql);
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							}
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						}
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						$this->data['is_registered'] = ($this->data['user_id'] != ANONYMOUS && ($this->data['user_type'] == USER_NORMAL || $this->data['user_type'] == USER_FOUNDER)) ? true : false;
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						$this->data['is_bot'] = (!$this->data['is_registered'] && $this->data['user_id'] != ANONYMOUS) ? true : false;
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						$this->data['user_lang'] = basename($this->data['user_lang']);
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						return true;
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					}
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				}
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				else
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				{
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					// Added logging temporarly to help debug bugs...
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					if (defined('DEBUG_EXTRA') && $this->data['user_id'] != ANONYMOUS)
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					{
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						if ($referer_valid)
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						{
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							add_log('critical', 'LOG_IP_BROWSER_FORWARDED_CHECK', $u_ip, $s_ip, $u_browser, $s_browser, htmlspecialchars($u_forwarded_for), htmlspecialchars($s_forwarded_for));
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						}
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						else
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						{
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							add_log('critical', 'LOG_REFERER_INVALID', $this->referer);
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						}
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					}
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				}
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			}
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		}
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		// If we reach here then no (valid) session exists. So we'll create a new one
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		return $this->session_create();
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	}
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	/**
ef5584
	* Create a new session
ef5584
	*
ef5584
	* If upon trying to start a session we discover there is nothing existing we
ef5584
	* jump here. Additionally this method is called directly during login to regenerate
ef5584
	* the session for the specific user. In this method we carry out a number of tasks;
ef5584
	* garbage collection, (search)bot checking, banned user comparison. Basically
ef5584
	* though this method will result in a new session for a specific user.
ef5584
	*/
ef5584
	function session_create($user_id = false, $set_admin = false, $persist_login = false, $viewonline = true)
ef5584
	{
ef5584
		global $SID, $_SID, $db, $config, $cache, $phpbb_root_path, $phpEx;
ef5584
ef5584
		$this->data = array();
ef5584
ef5584
		/* Garbage collection ... remove old sessions updating user information
ef5584
		// if necessary. It means (potentially) 11 queries but only infrequently
ef5584
		if ($this->time_now > $config['session_last_gc'] + $config['session_gc'])
ef5584
		{
ef5584
			$this->session_gc();
ef5584
		}*/
ef5584
ef5584
		// Do we allow autologin on this board? No? Then override anything
ef5584
		// that may be requested here
ef5584
		if (!$config['allow_autologin'])
ef5584
		{
ef5584
			$this->cookie_data['k'] = $persist_login = false;
ef5584
		}
ef5584
ef5584
		/**
ef5584
		* Here we do a bot check, oh er saucy! No, not that kind of bot
ef5584
		* check. We loop through the list of bots defined by the admin and
ef5584
		* see if we have any useragent and/or IP matches. If we do, this is a
ef5584
		* bot, act accordingly
ef5584
		*/
ef5584
		$bot = false;
ef5584
		$active_bots = $cache->obtain_bots();
ef5584
ef5584
		foreach ($active_bots as $row)
ef5584
		{
ef5584
			if ($row['bot_agent'] && preg_match('#' . str_replace('\*', '.*?', preg_quote($row['bot_agent'], '#')) . '#i', $this->browser))
ef5584
			{
ef5584
				$bot = $row['user_id'];
ef5584
			}
ef5584
ef5584
			// If ip is supplied, we will make sure the ip is matching too...
ef5584
			if ($row['bot_ip'] && ($bot || !$row['bot_agent']))
ef5584
			{
ef5584
				// Set bot to false, then we only have to set it to true if it is matching
ef5584
				$bot = false;
ef5584
ef5584
				foreach (explode(',', $row['bot_ip']) as $bot_ip)
ef5584
				{
ef5584
					if (strpos($this->ip, $bot_ip) === 0)
ef5584
					{
ef5584
						$bot = (int) $row['user_id'];
ef5584
						break;
ef5584
					}
ef5584
				}
ef5584
			}
ef5584
ef5584
			if ($bot)
ef5584
			{
ef5584
				break;
ef5584
			}
ef5584
		}
ef5584
ef5584
		$method = basename(trim($config['auth_method']));
ef5584
		include_once($phpbb_root_path . 'includes/auth/auth_' . $method . '.' . $phpEx);
ef5584
ef5584
		$method = 'autologin_' . $method;
ef5584
		if (function_exists($method))
ef5584
		{
ef5584
			$this->data = $method();
ef5584
ef5584
			if (sizeof($this->data))
ef5584
			{
ef5584
				$this->cookie_data['k'] = '';
ef5584
				$this->cookie_data['u'] = $this->data['user_id'];
ef5584
			}
ef5584
		}
ef5584
ef5584
		// If we're presented with an autologin key we'll join against it.
ef5584
		// Else if we've been passed a user_id we'll grab data based on that
ef5584
		if (isset($this->cookie_data['k']) && $this->cookie_data['k'] && $this->cookie_data['u'] && !sizeof($this->data))
ef5584
		{
ef5584
			$sql = 'SELECT u.*
ef5584
				FROM ' . USERS_TABLE . ' u, ' . SESSIONS_KEYS_TABLE . ' k
ef5584
				WHERE u.user_id = ' . (int) $this->cookie_data['u'] . '
ef5584
					AND u.user_type IN (' . USER_NORMAL . ', ' . USER_FOUNDER . ")
ef5584
					AND k.user_id = u.user_id
ef5584
					AND k.key_id = '" . $db->sql_escape(md5($this->cookie_data['k'])) . "'";
ef5584
			$result = $db->sql_query($sql);
ef5584
			$this->data = $db->sql_fetchrow($result);
ef5584
			$db->sql_freeresult($result);
ef5584
			$bot = false;
ef5584
		}
ef5584
		else if ($user_id !== false && !sizeof($this->data))
ef5584
		{
ef5584
			$this->cookie_data['k'] = '';
ef5584
			$this->cookie_data['u'] = $user_id;
ef5584
ef5584
			$sql = 'SELECT *
ef5584
				FROM ' . USERS_TABLE . '
ef5584
				WHERE user_id = ' . (int) $this->cookie_data['u'] . '
ef5584
					AND user_type IN (' . USER_NORMAL . ', ' . USER_FOUNDER . ')';
ef5584
			$result = $db->sql_query($sql);
ef5584
			$this->data = $db->sql_fetchrow($result);
ef5584
			$db->sql_freeresult($result);
ef5584
			$bot = false;
ef5584
		}
ef5584
ef5584
		// If no data was returned one or more of the following occurred:
ef5584
		// Key didn't match one in the DB
ef5584
		// User does not exist
ef5584
		// User is inactive
ef5584
		// User is bot
ef5584
		if (!sizeof($this->data) || !is_array($this->data))
ef5584
		{
ef5584
			$this->cookie_data['k'] = '';
ef5584
			$this->cookie_data['u'] = ($bot) ? $bot : ANONYMOUS;
ef5584
ef5584
			if (!$bot)
ef5584
			{
ef5584
				$sql = 'SELECT *
ef5584
					FROM ' . USERS_TABLE . '
ef5584
					WHERE user_id = ' . (int) $this->cookie_data['u'];
ef5584
			}
ef5584
			else
ef5584
			{
ef5584
				// We give bots always the same session if it is not yet expired.
ef5584
				$sql = 'SELECT u.*, s.*
ef5584
					FROM ' . USERS_TABLE . ' u
ef5584
					LEFT JOIN ' . SESSIONS_TABLE . ' s ON (s.session_user_id = u.user_id)
ef5584
					WHERE u.user_id = ' . (int) $bot;
ef5584
			}
ef5584
ef5584
			$result = $db->sql_query($sql);
ef5584
			$this->data = $db->sql_fetchrow($result);
ef5584
			$db->sql_freeresult($result);
ef5584
		}
ef5584
ef5584
		if ($this->data['user_id'] != ANONYMOUS && !$bot)
ef5584
		{
ef5584
			$this->data['session_last_visit'] = (isset($this->data['session_time']) && $this->data['session_time']) ? $this->data['session_time'] : (($this->data['user_lastvisit']) ? $this->data['user_lastvisit'] : time());
ef5584
		}
ef5584
		else
ef5584
		{
ef5584
			$this->data['session_last_visit'] = $this->time_now;
ef5584
		}
ef5584
ef5584
		// Force user id to be integer...
ef5584
		$this->data['user_id'] = (int) $this->data['user_id'];
ef5584
ef5584
		// At this stage we should have a filled data array, defined cookie u and k data.
ef5584
		// data array should contain recent session info if we're a real user and a recent
ef5584
		// session exists in which case session_id will also be set
ef5584
ef5584
		// Is user banned? Are they excluded? Won't return on ban, exists within method
ef5584
		if ($this->data['user_type'] != USER_FOUNDER)
ef5584
		{
ef5584
			if (!$config['forwarded_for_check'])
ef5584
			{
ef5584
				$this->check_ban($this->data['user_id'], $this->ip);
ef5584
			}
ef5584
			else
ef5584
			{
ef5584
				$ips = explode(', ', $this->forwarded_for);
ef5584
				$ips[] = $this->ip;
ef5584
				$this->check_ban($this->data['user_id'], $ips);
ef5584
			}
ef5584
		}
ef5584
ef5584
		$this->data['is_registered'] = (!$bot && $this->data['user_id'] != ANONYMOUS && ($this->data['user_type'] == USER_NORMAL || $this->data['user_type'] == USER_FOUNDER)) ? true : false;
ef5584
		$this->data['is_bot'] = ($bot) ? true : false;
ef5584
ef5584
		// If our friend is a bot, we re-assign a previously assigned session
ef5584
		if ($this->data['is_bot'] && $bot == $this->data['user_id'] && $this->data['session_id'])
ef5584
		{
ef5584
			// Only assign the current session if the ip, browser and forwarded_for match...
ef5584
			if (strpos($this->ip, ':') !== false && strpos($this->data['session_ip'], ':') !== false)
ef5584
			{
ef5584
				$s_ip = short_ipv6($this->data['session_ip'], $config['ip_check']);
ef5584
				$u_ip = short_ipv6($this->ip, $config['ip_check']);
ef5584
			}
ef5584
			else
ef5584
			{
ef5584
				$s_ip = implode('.', array_slice(explode('.', $this->data['session_ip']), 0, $config['ip_check']));
ef5584
				$u_ip = implode('.', array_slice(explode('.', $this->ip), 0, $config['ip_check']));
ef5584
			}
ef5584
ef5584
			$s_browser = ($config['browser_check']) ? trim(strtolower(substr($this->data['session_browser'], 0, 149))) : '';
ef5584
			$u_browser = ($config['browser_check']) ? trim(strtolower(substr($this->browser, 0, 149))) : '';
ef5584
ef5584
			$s_forwarded_for = ($config['forwarded_for_check']) ? substr($this->data['session_forwarded_for'], 0, 254) : '';
ef5584
			$u_forwarded_for = ($config['forwarded_for_check']) ? substr($this->forwarded_for, 0, 254) : '';
ef5584
ef5584
			if ($u_ip === $s_ip && $s_browser === $u_browser && $s_forwarded_for === $u_forwarded_for)
ef5584
			{
ef5584
				$this->session_id = $this->data['session_id'];
ef5584
ef5584
				// Only update session DB a minute or so after last update or if page changes
ef5584
				if ($this->time_now - $this->data['session_time'] > 60 || ($this->update_session_page && $this->data['session_page'] != $this->page['page']))
ef5584
				{
ef5584
					$this->data['session_time'] = $this->data['session_last_visit'] = $this->time_now;
ef5584
ef5584
					$sql_ary = array('session_time' => $this->time_now, 'session_last_visit' => $this->time_now, 'session_admin' => 0);
ef5584
ef5584
					if ($this->update_session_page)
ef5584
					{
ef5584
						$sql_ary['session_page'] = substr($this->page['page'], 0, 199);
ef5584
						$sql_ary['session_forum_id'] = $this->page['forum'];
ef5584
					}
ef5584
ef5584
					$sql = 'UPDATE ' . SESSIONS_TABLE . ' SET ' . $db->sql_build_array('UPDATE', $sql_ary) . "
ef5584
						WHERE session_id = '" . $db->sql_escape($this->session_id) . "'";
ef5584
					$db->sql_query($sql);
ef5584
ef5584
					// Update the last visit time
ef5584
					$sql = 'UPDATE ' . USERS_TABLE . '
ef5584
						SET user_lastvisit = ' . (int) $this->data['session_time'] . '
ef5584
						WHERE user_id = ' . (int) $this->data['user_id'];
ef5584
					$db->sql_query($sql);
ef5584
				}
ef5584
ef5584
				$SID = '?sid=';
ef5584
				$_SID = '';
ef5584
				return true;
ef5584
			}
ef5584
			else
ef5584
			{
ef5584
				// If the ip and browser does not match make sure we only have one bot assigned to one session
ef5584
				$db->sql_query('DELETE FROM ' . SESSIONS_TABLE . ' WHERE session_user_id = ' . $this->data['user_id']);
ef5584
			}
ef5584
		}
ef5584
ef5584
		$session_autologin = (($this->cookie_data['k'] || $persist_login) && $this->data['is_registered']) ? true : false;
ef5584
		$set_admin = ($set_admin && $this->data['is_registered']) ? true : false;
ef5584
ef5584
		// Create or update the session
ef5584
		$sql_ary = array(
ef5584
			'session_user_id'		=> (int) $this->data['user_id'],
ef5584
			'session_start'			=> (int) $this->time_now,
ef5584
			'session_last_visit'	=> (int) $this->data['session_last_visit'],
ef5584
			'session_time'			=> (int) $this->time_now,
ef5584
			'session_browser'		=> (string) trim(substr($this->browser, 0, 149)),
ef5584
			'session_forwarded_for'	=> (string) $this->forwarded_for,
ef5584
			'session_ip'			=> (string) $this->ip,
ef5584
			'session_autologin'		=> ($session_autologin) ? 1 : 0,
ef5584
			'session_admin'			=> ($set_admin) ? 1 : 0,
ef5584
			'session_viewonline'	=> ($viewonline) ? 1 : 0,
ef5584
		);
ef5584
ef5584
		if ($this->update_session_page)
ef5584
		{
ef5584
			$sql_ary['session_page'] = (string) substr($this->page['page'], 0, 199);
ef5584
			$sql_ary['session_forum_id'] = $this->page['forum'];
ef5584
		}
ef5584
ef5584
		$db->sql_return_on_error(true);
ef5584
ef5584
		$sql = 'DELETE
ef5584
			FROM ' . SESSIONS_TABLE . '
ef5584
			WHERE session_id = \'' . $db->sql_escape($this->session_id) . '\'
ef5584
				AND session_user_id = ' . ANONYMOUS;
ef5584
ef5584
		if (!defined('IN_ERROR_HANDLER') && (!$this->session_id || !$db->sql_query($sql) || !$db->sql_affectedrows()))
ef5584
		{
ef5584
			// Limit new sessions in 1 minute period (if required)
ef5584
			if (empty($this->data['session_time']) && $config['active_sessions'])
ef5584
			{
ef5584
//				$db->sql_return_on_error(false);
ef5584
ef5584
				$sql = 'SELECT COUNT(session_id) AS sessions
ef5584
					FROM ' . SESSIONS_TABLE . '
ef5584
					WHERE session_time >= ' . ($this->time_now - 60);
ef5584
				$result = $db->sql_query($sql);
ef5584
				$row = $db->sql_fetchrow($result);
ef5584
				$db->sql_freeresult($result);
ef5584
ef5584
				if ((int) $row['sessions'] > (int) $config['active_sessions'])
ef5584
				{
ef5584
					header('HTTP/1.1 503 Service Unavailable');
ef5584
					trigger_error('BOARD_UNAVAILABLE');
ef5584
				}
ef5584
			}
ef5584
		}
ef5584
ef5584
		// Since we re-create the session id here, the inserted row must be unique. Therefore, we display potential errors.
ef5584
		// Commented out because it will not allow forums to update correctly
ef5584
//		$db->sql_return_on_error(false);
ef5584
ef5584
		$this->session_id = $this->data['session_id'] = md5(unique_id());
ef5584
ef5584
		$sql_ary['session_id'] = (string) $this->session_id;
ef5584
		$sql_ary['session_page'] = (string) substr($this->page['page'], 0, 199);
ef5584
		$sql_ary['session_forum_id'] = $this->page['forum'];
ef5584
ef5584
		$sql = 'INSERT INTO ' . SESSIONS_TABLE . ' ' . $db->sql_build_array('INSERT', $sql_ary);
ef5584
		$db->sql_query($sql);
ef5584
ef5584
		$db->sql_return_on_error(false);
ef5584
ef5584
		// Regenerate autologin/persistent login key
ef5584
		if ($session_autologin)
ef5584
		{
ef5584
			$this->set_login_key();
ef5584
		}
ef5584
ef5584
		// refresh data
ef5584
		$SID = '?sid=' . $this->session_id;
ef5584
		$_SID = $this->session_id;
ef5584
		$this->data = array_merge($this->data, $sql_ary);
ef5584
ef5584
		if (!$bot)
ef5584
		{
ef5584
			$cookie_expire = $this->time_now + (($config['max_autologin_time']) ? 86400 * (int) $config['max_autologin_time'] : 31536000);
ef5584
ef5584
			$this->set_cookie('u', $this->cookie_data['u'], $cookie_expire);
ef5584
			$this->set_cookie('k', $this->cookie_data['k'], $cookie_expire);
ef5584
			$this->set_cookie('sid', $this->session_id, $cookie_expire);
ef5584
ef5584
			unset($cookie_expire);
ef5584
ef5584
			$sql = 'SELECT COUNT(session_id) AS sessions
ef5584
					FROM ' . SESSIONS_TABLE . '
ef5584
					WHERE session_user_id = ' . (int) $this->data['user_id'] . '
ef5584
					AND session_time >= ' . (int) ($this->time_now - (max($config['session_length'], $config['form_token_lifetime'])));
ef5584
			$result = $db->sql_query($sql);
ef5584
			$row = $db->sql_fetchrow($result);
ef5584
			$db->sql_freeresult($result);
ef5584
ef5584
			if ((int) $row['sessions'] <= 1 || empty($this->data['user_form_salt']))
ef5584
			{
ef5584
				$this->data['user_form_salt'] = unique_id();
ef5584
				// Update the form key
ef5584
				$sql = 'UPDATE ' . USERS_TABLE . '
ef5584
					SET user_form_salt = \'' . $db->sql_escape($this->data['user_form_salt']) . '\'
ef5584
					WHERE user_id = ' . (int) $this->data['user_id'];
ef5584
				$db->sql_query($sql);
ef5584
			}
ef5584
		}
ef5584
		else
ef5584
		{
ef5584
			$this->data['session_time'] = $this->data['session_last_visit'] = $this->time_now;
ef5584
ef5584
			// Update the last visit time
ef5584
			$sql = 'UPDATE ' . USERS_TABLE . '
ef5584
				SET user_lastvisit = ' . (int) $this->data['session_time'] . '
ef5584
				WHERE user_id = ' . (int) $this->data['user_id'];
ef5584
			$db->sql_query($sql);
ef5584
ef5584
			$SID = '?sid=';
ef5584
			$_SID = '';
ef5584
		}
ef5584
ef5584
		return true;
ef5584
	}
ef5584
ef5584
	/**
ef5584
	* Kills a session
ef5584
	*
ef5584
	* This method does what it says on the tin. It will delete a pre-existing session.
ef5584
	* It resets cookie information (destroying any autologin key within that cookie data)
ef5584
	* and update the users information from the relevant session data. It will then
ef5584
	* grab guest user information.
ef5584
	*/
ef5584
	function session_kill($new_session = true)
ef5584
	{
ef5584
		global $SID, $_SID, $db, $config, $phpbb_root_path, $phpEx;
ef5584
ef5584
		$sql = 'DELETE FROM ' . SESSIONS_TABLE . "
ef5584
			WHERE session_id = '" . $db->sql_escape($this->session_id) . "'
ef5584
				AND session_user_id = " . (int) $this->data['user_id'];
ef5584
		$db->sql_query($sql);
ef5584
ef5584
		// Allow connecting logout with external auth method logout
ef5584
		$method = basename(trim($config['auth_method']));
ef5584
		include_once($phpbb_root_path . 'includes/auth/auth_' . $method . '.' . $phpEx);
ef5584
ef5584
		$method = 'logout_' . $method;
ef5584
		if (function_exists($method))
ef5584
		{
ef5584
			$method($this->data, $new_session);
ef5584
		}
ef5584
ef5584
		if ($this->data['user_id'] != ANONYMOUS)
ef5584
		{
ef5584
			// Delete existing session, update last visit info first!
ef5584
			if (!isset($this->data['session_time']))
ef5584
			{
ef5584
				$this->data['session_time'] = time();
ef5584
			}
ef5584
ef5584
			$sql = 'UPDATE ' . USERS_TABLE . '
ef5584
				SET user_lastvisit = ' . (int) $this->data['session_time'] . '
ef5584
				WHERE user_id = ' . (int) $this->data['user_id'];
ef5584
			$db->sql_query($sql);
ef5584
ef5584
			if ($this->cookie_data['k'])
ef5584
			{
ef5584
				$sql = 'DELETE FROM ' . SESSIONS_KEYS_TABLE . '
ef5584
					WHERE user_id = ' . (int) $this->data['user_id'] . "
ef5584
						AND key_id = '" . $db->sql_escape(md5($this->cookie_data['k'])) . "'";
ef5584
				$db->sql_query($sql);
ef5584
			}
ef5584
ef5584
			// Reset the data array
ef5584
			$this->data = array();
ef5584
ef5584
			$sql = 'SELECT *
ef5584
				FROM ' . USERS_TABLE . '
ef5584
				WHERE user_id = ' . ANONYMOUS;
ef5584
			$result = $db->sql_query($sql);
ef5584
			$this->data = $db->sql_fetchrow($result);
ef5584
			$db->sql_freeresult($result);
ef5584
		}
ef5584
ef5584
		$cookie_expire = $this->time_now - 31536000;
ef5584
		$this->set_cookie('u', '', $cookie_expire);
ef5584
		$this->set_cookie('k', '', $cookie_expire);
ef5584
		$this->set_cookie('sid', '', $cookie_expire);
ef5584
		unset($cookie_expire);
ef5584
ef5584
		$SID = '?sid=';
ef5584
		$this->session_id = $_SID = '';
ef5584
ef5584
		// To make sure a valid session is created we create one for the anonymous user
ef5584
		if ($new_session)
ef5584
		{
ef5584
			$this->session_create(ANONYMOUS);
ef5584
		}
ef5584
ef5584
		return true;
ef5584
	}
ef5584
ef5584
	/**
ef5584
	* Session garbage collection
ef5584
	*
ef5584
	* This looks a lot more complex than it really is. Effectively we are
ef5584
	* deleting any sessions older than an admin definable limit. Due to the
ef5584
	* way in which we maintain session data we have to ensure we update user
ef5584
	* data before those sessions are destroyed. In addition this method
ef5584
	* removes autologin key information that is older than an admin defined
ef5584
	* limit.
ef5584
	*/
ef5584
	function session_gc()
ef5584
	{
ef5584
		global $db, $config;
ef5584
ef5584
		$batch_size = 10;
ef5584
ef5584
		if (!$this->time_now)
ef5584
		{
ef5584
			$this->time_now = time();
ef5584
		}
ef5584
ef5584
		// Firstly, delete guest sessions
ef5584
		$sql = 'DELETE FROM ' . SESSIONS_TABLE . '
ef5584
			WHERE session_user_id = ' . ANONYMOUS . '
ef5584
				AND session_time < ' . (int) ($this->time_now - $config['session_length']);
ef5584
		$db->sql_query($sql);
ef5584
ef5584
		// Get expired sessions, only most recent for each user
ef5584
		$sql = 'SELECT session_user_id, session_page, MAX(session_time) AS recent_time
ef5584
			FROM ' . SESSIONS_TABLE . '
ef5584
			WHERE session_time < ' . ($this->time_now - $config['session_length']) . '
ef5584
			GROUP BY session_user_id, session_page';
ef5584
		$result = $db->sql_query_limit($sql, $batch_size);
ef5584
ef5584
		$del_user_id = array();
ef5584
		$del_sessions = 0;
ef5584
ef5584
		while ($row = $db->sql_fetchrow($result))
ef5584
		{
ef5584
			$sql = 'UPDATE ' . USERS_TABLE . '
ef5584
				SET user_lastvisit = ' . (int) $row['recent_time'] . ", user_lastpage = '" . $db->sql_escape($row['session_page']) . "'
ef5584
				WHERE user_id = " . (int) $row['session_user_id'];
ef5584
			$db->sql_query($sql);
ef5584
ef5584
			$del_user_id[] = (int) $row['session_user_id'];
ef5584
			$del_sessions++;
ef5584
		}
ef5584
		$db->sql_freeresult($result);
ef5584
ef5584
		if (sizeof($del_user_id))
ef5584
		{
ef5584
			// Delete expired sessions
ef5584
			$sql = 'DELETE FROM ' . SESSIONS_TABLE . '
ef5584
				WHERE ' . $db->sql_in_set('session_user_id', $del_user_id) . '
ef5584
					AND session_time < ' . ($this->time_now - $config['session_length']);
ef5584
			$db->sql_query($sql);
ef5584
		}
ef5584
ef5584
		if ($del_sessions < $batch_size)
ef5584
		{
ef5584
			// Less than 10 users, update gc timer ... else we want gc
ef5584
			// called again to delete other sessions
ef5584
			set_config('session_last_gc', $this->time_now, true);
ef5584
ef5584
			if ($config['max_autologin_time'])
ef5584
			{
ef5584
				$sql = 'DELETE FROM ' . SESSIONS_KEYS_TABLE . '
ef5584
					WHERE last_login < ' . (time() - (86400 * (int) $config['max_autologin_time']));
ef5584
				$db->sql_query($sql);
ef5584
			}
ef5584
			$this->confirm_gc();
ef5584
		}
ef5584
ef5584
		return;
ef5584
	}
ef5584
ef5584
	function confirm_gc($type = 0)
ef5584
	{
ef5584
		global $db, $config;
ef5584
ef5584
		$sql = 'SELECT DISTINCT c.session_id
ef5584
				FROM ' . CONFIRM_TABLE . ' c
ef5584
				LEFT JOIN ' . SESSIONS_TABLE . ' s ON (c.session_id = s.session_id)
ef5584
				WHERE s.session_id IS NULL' .
ef5584
					((empty($type)) ? '' : ' AND c.confirm_type = ' . (int) $type);
ef5584
		$result = $db->sql_query($sql);
ef5584
ef5584
		if ($row = $db->sql_fetchrow($result))
ef5584
		{
ef5584
			$sql_in = array();
ef5584
			do
ef5584
			{
ef5584
				$sql_in[] = (string) $row['session_id'];
ef5584
			}
ef5584
			while ($row = $db->sql_fetchrow($result));
ef5584
ef5584
			if (sizeof($sql_in))
ef5584
			{
ef5584
				$sql = 'DELETE FROM ' . CONFIRM_TABLE . '
ef5584
					WHERE ' . $db->sql_in_set('session_id', $sql_in);
ef5584
				$db->sql_query($sql);
ef5584
			}
ef5584
		}
ef5584
		$db->sql_freeresult($result);
ef5584
	}
ef5584
ef5584
ef5584
	/**
ef5584
	* Sets a cookie
ef5584
	*
ef5584
	* Sets a cookie of the given name with the specified data for the given length of time. If no time is specified, a session cookie will be set.
ef5584
	*
ef5584
	* @param string $name		Name of the cookie, will be automatically prefixed with the phpBB cookie name. track becomes [cookie_name]_track then.
ef5584
	* @param string $cookiedata	The data to hold within the cookie
ef5584
	* @param int $cookietime	The expiration time as UNIX timestamp. If 0 is provided, a session cookie is set.
ef5584
	*/
ef5584
	function set_cookie($name, $cookiedata, $cookietime)
ef5584
	{
ef5584
		global $config;
ef5584
ef5584
		$name_data = rawurlencode($config['cookie_name'] . '_' . $name) . '=' . rawurlencode($cookiedata);
ef5584
		$expire = gmdate('D, d-M-Y H:i:s \\G\\M\\T', $cookietime);
ef5584
		$domain = (!$config['cookie_domain'] || $config['cookie_domain'] == 'localhost' || $config['cookie_domain'] == '127.0.0.1') ? '' : '; domain=' . $config['cookie_domain'];
ef5584
ef5584
		header('Set-Cookie: ' . $name_data . (($cookietime) ? '; expires=' . $expire : '') . '; path=' . $config['cookie_path'] . $domain . ((!$config['cookie_secure']) ? '' : '; secure') . '; HttpOnly', false);
ef5584
	}
ef5584
ef5584
	/**
ef5584
	* Check for banned user
ef5584
	*
ef5584
	* Checks whether the supplied user is banned by id, ip or email. If no parameters
ef5584
	* are passed to the method pre-existing session data is used. If $return is false
ef5584
	* this routine does not return on finding a banned user, it outputs a relevant
ef5584
	* message and stops execution.
ef5584
	*
ef5584
	* @param string|array	$user_ips	Can contain a string with one IP or an array of multiple IPs
ef5584
	*/
ef5584
	function check_ban($user_id = false, $user_ips = false, $user_email = false, $return = false)
ef5584
	{
ef5584
		global $config, $db;
ef5584
ef5584
		if (defined('IN_CHECK_BAN'))
ef5584
		{
ef5584
			return;
ef5584
		}
ef5584
ef5584
		$banned = false;
ef5584
		$cache_ttl = 3600;
ef5584
		$where_sql = array();
ef5584
ef5584
		$sql = 'SELECT ban_ip, ban_userid, ban_email, ban_exclude, ban_give_reason, ban_end
ef5584
			FROM ' . BANLIST_TABLE . '
ef5584
			WHERE ';
ef5584
ef5584
		// Determine which entries to check, only return those
ef5584
		if ($user_email === false)
ef5584
		{
ef5584
			$where_sql[] = "ban_email = ''";
ef5584
		}
ef5584
ef5584
		if ($user_ips === false)
ef5584
		{
ef5584
			$where_sql[] = "(ban_ip = '' OR ban_exclude = 1)";
ef5584
		}
ef5584
ef5584
		if ($user_id === false)
ef5584
		{
ef5584
			$where_sql[] = '(ban_userid = 0 OR ban_exclude = 1)';
ef5584
		}
ef5584
		else
ef5584
		{
ef5584
			$cache_ttl = ($user_id == ANONYMOUS) ? 3600 : 0;
ef5584
			$_sql = '(ban_userid = ' . $user_id;
ef5584
ef5584
			if ($user_email !== false)
ef5584
			{
ef5584
				$_sql .= " OR ban_email <> ''";
ef5584
			}
ef5584
ef5584
			if ($user_ips !== false)
ef5584
			{
ef5584
				$_sql .= " OR ban_ip <> ''";
ef5584
			}
ef5584
ef5584
			$_sql .= ')';
ef5584
ef5584
			$where_sql[] = $_sql;
ef5584
		}
ef5584
ef5584
		$sql .= (sizeof($where_sql)) ? implode(' AND ', $where_sql) : '';
ef5584
		$result = $db->sql_query($sql, $cache_ttl);
ef5584
ef5584
		$ban_triggered_by = 'user';
ef5584
		while ($row = $db->sql_fetchrow($result))
ef5584
		{
ef5584
			if ($row['ban_end'] && $row['ban_end'] < time())
ef5584
			{
ef5584
				continue;
ef5584
			}
ef5584
ef5584
			$ip_banned = false;
ef5584
			if (!empty($row['ban_ip']))
ef5584
			{
ef5584
				if (!is_array($user_ips))
ef5584
				{
ef5584
					$ip_banned = preg_match('#^' . str_replace('\*', '.*?', preg_quote($row['ban_ip'], '#')) . '$#i', $user_ips);
ef5584
				}
ef5584
				else
ef5584
				{
ef5584
					foreach ($user_ips as $user_ip)
ef5584
					{
ef5584
						if (preg_match('#^' . str_replace('\*', '.*?', preg_quote($row['ban_ip'], '#')) . '$#i', $user_ip))
ef5584
						{
ef5584
							$ip_banned = true;
ef5584
							break;
ef5584
						}
ef5584
					}
ef5584
				}
ef5584
			}
ef5584
ef5584
			if ((!empty($row['ban_userid']) && intval($row['ban_userid']) == $user_id) ||
ef5584
				$ip_banned ||
ef5584
				(!empty($row['ban_email']) && preg_match('#^' . str_replace('\*', '.*?', preg_quote($row['ban_email'], '#')) . '$#i', $user_email)))
ef5584
			{
ef5584
				if (!empty($row['ban_exclude']))
ef5584
				{
ef5584
					$banned = false;
ef5584
					break;
ef5584
				}
ef5584
				else
ef5584
				{
ef5584
					$banned = true;
ef5584
					$ban_row = $row;
ef5584
ef5584
					if (!empty($row['ban_userid']) && intval($row['ban_userid']) == $user_id)
ef5584
					{
ef5584
						$ban_triggered_by = 'user';
ef5584
					}
ef5584
					else if ($ip_banned)
ef5584
					{
ef5584
						$ban_triggered_by = 'ip';
ef5584
					}
ef5584
					else
ef5584
					{
ef5584
						$ban_triggered_by = 'email';
ef5584
					}
ef5584
ef5584
					// Don't break. Check if there is an exclude rule for this user
ef5584
				}
ef5584
			}
ef5584
		}
ef5584
		$db->sql_freeresult($result);
ef5584
ef5584
		if ($banned && !$return)
ef5584
		{
ef5584
			global $template;
ef5584
ef5584
			// If the session is empty we need to create a valid one...
ef5584
			if (empty($this->session_id))
ef5584
			{
ef5584
				// This seems to be no longer needed? - #14971
ef5584
//				$this->session_create(ANONYMOUS);
ef5584
			}
ef5584
ef5584
			// Initiate environment ... since it won't be set at this stage
ef5584
			$this->setup();
ef5584
ef5584
			// Logout the user, banned users are unable to use the normal 'logout' link
ef5584
			if ($this->data['user_id'] != ANONYMOUS)
ef5584
			{
ef5584
				$this->session_kill();
ef5584
			}
ef5584
ef5584
			// We show a login box here to allow founders accessing the board if banned by IP
ef5584
			if (defined('IN_LOGIN') && $this->data['user_id'] == ANONYMOUS)
ef5584
			{
ef5584
				global $phpEx;
ef5584
ef5584
				$this->setup('ucp');
ef5584
				$this->data['is_registered'] = $this->data['is_bot'] = false;
ef5584
ef5584
				// Set as a precaution to allow login_box() handling this case correctly as well as this function not being executed again.
ef5584
				define('IN_CHECK_BAN', 1);
ef5584
ef5584
				login_box("index.$phpEx");
ef5584
ef5584
				// The false here is needed, else the user is able to circumvent the ban.
ef5584
				$this->session_kill(false);
ef5584
			}
ef5584
ef5584
			// Ok, we catch the case of an empty session id for the anonymous user...
ef5584
			// This can happen if the user is logging in, banned by username and the login_box() being called "again".
ef5584
			if (empty($this->session_id) && defined('IN_CHECK_BAN'))
ef5584
			{
ef5584
				$this->session_create(ANONYMOUS);
ef5584
			}
ef5584
ef5584
ef5584
			// Determine which message to output
ef5584
			$till_date = ($ban_row['ban_end']) ? $this->format_date($ban_row['ban_end']) : '';
ef5584
			$message = ($ban_row['ban_end']) ? 'BOARD_BAN_TIME' : 'BOARD_BAN_PERM';
ef5584
ef5584
			$message = sprintf($this->lang[$message], $till_date, '', '');
ef5584
			$message .= ($ban_row['ban_give_reason']) ? '

' . sprintf($this->lang['BOARD_BAN_REASON'], $ban_row['ban_give_reason']) : '';
ef5584
			$message .= '

' . $this->lang['BAN_TRIGGERED_BY_' . strtoupper($ban_triggered_by)] . '';
ef5584
ef5584
			// To circumvent session_begin returning a valid value and the check_ban() not called on second page view, we kill the session again
ef5584
			$this->session_kill(false);
ef5584
ef5584
			// A very special case... we are within the cron script which is not supposed to print out the ban message... show blank page
ef5584
			if (defined('IN_CRON'))
ef5584
			{
ef5584
				garbage_collection();
ef5584
				exit_handler();
ef5584
				exit;
ef5584
			}
ef5584
ef5584
			trigger_error($message);
ef5584
		}
ef5584
ef5584
		return ($banned && $ban_row['ban_give_reason']) ? $ban_row['ban_give_reason'] : $banned;
ef5584
	}
ef5584
ef5584
	/**
ef5584
	* Check if ip is blacklisted
ef5584
	* This should be called only where absolutly necessary
ef5584
	*
ef5584
	* Only IPv4 (rbldns does not support AAAA records/IPv6 lookups)
ef5584
	*
ef5584
	* @author satmd (from the php manual)
ef5584
	* @param string $mode register/post - spamcop for example is ommitted for posting
ef5584
	* @return false if ip is not blacklisted, else an array([checked server], [lookup])
ef5584
	*/
ef5584
	function check_dnsbl($mode, $ip = false)
ef5584
	{
ef5584
		if ($ip === false)
ef5584
		{
ef5584
			$ip = $this->ip;
ef5584
		}
ef5584
ef5584
		$dnsbl_check = array(
ef5584
			'sbl-xbl.spamhaus.org'	=> 'http://www.spamhaus.org/query/bl?ip=',
ef5584
		);
ef5584
ef5584
		if ($mode == 'register')
ef5584
		{
ef5584
			$dnsbl_check['bl.spamcop.net'] = 'http://spamcop.net/bl.shtml?';
ef5584
		}
ef5584
ef5584
		if ($ip)
ef5584
		{
ef5584
			$quads = explode('.', $ip);
ef5584
			$reverse_ip = $quads[3] . '.' . $quads[2] . '.' . $quads[1] . '.' . $quads[0];
ef5584
ef5584
			// Need to be listed on all servers...
ef5584
			$listed = true;
ef5584
			$info = array();
ef5584
ef5584
			foreach ($dnsbl_check as $dnsbl => $lookup)
ef5584
			{
ef5584
				if (phpbb_checkdnsrr($reverse_ip . '.' . $dnsbl . '.', 'A') === true)
ef5584
				{
ef5584
					$info = array($dnsbl, $lookup . $ip);
ef5584
				}
ef5584
				else
ef5584
				{
ef5584
					$listed = false;
ef5584
				}
ef5584
			}
ef5584
ef5584
			if ($listed)
ef5584
			{
ef5584
				return $info;
ef5584
			}
ef5584
		}
ef5584
ef5584
		return false;
ef5584
	}
ef5584
ef5584
	/**
ef5584
	* Check if URI is blacklisted
ef5584
	* This should be called only where absolutly necessary, for example on the submitted website field
ef5584
	* This function is not in use at the moment and is only included for testing purposes, it may not work at all!
ef5584
	* This means it is untested at the moment and therefore commented out
ef5584
	*
ef5584
	* @param string $uri URI to check
ef5584
	* @return true if uri is on blacklist, else false. Only blacklist is checked (~zero FP), no grey lists
ef5584
	function check_uribl($uri)
ef5584
	{
ef5584
		// Normally parse_url() is not intended to parse uris
ef5584
		// We need to get the top-level domain name anyway... change.
ef5584
		$uri = parse_url($uri);
ef5584
ef5584
		if ($uri === false || empty($uri['host']))
ef5584
		{
ef5584
			return false;
ef5584
		}
ef5584
ef5584
		$uri = trim($uri['host']);
ef5584
ef5584
		if ($uri)
ef5584
		{
ef5584
			// One problem here... the return parameter for the "windows" method is different from what
ef5584
			// we expect... this may render this check useless...
ef5584
			if (phpbb_checkdnsrr($uri . '.multi.uribl.com.', 'A') === true)
ef5584
			{
ef5584
				return true;
ef5584
			}
ef5584
		}
ef5584
ef5584
		return false;
ef5584
	}
ef5584
	*/
ef5584
ef5584
	/**
ef5584
	* Set/Update a persistent login key
ef5584
	*
ef5584
	* This method creates or updates a persistent session key. When a user makes
ef5584
	* use of persistent (formerly auto-) logins a key is generated and stored in the
ef5584
	* DB. When they revisit with the same key it's automatically updated in both the
ef5584
	* DB and cookie. Multiple keys may exist for each user representing different
ef5584
	* browsers or locations. As with _any_ non-secure-socket no passphrase login this
ef5584
	* remains vulnerable to exploit.
ef5584
	*/
ef5584
	function set_login_key($user_id = false, $key = false, $user_ip = false)
ef5584
	{
ef5584
		global $config, $db;
ef5584
ef5584
		$user_id = ($user_id === false) ? $this->data['user_id'] : $user_id;
ef5584
		$user_ip = ($user_ip === false) ? $this->ip : $user_ip;
ef5584
		$key = ($key === false) ? (($this->cookie_data['k']) ? $this->cookie_data['k'] : false) : $key;
ef5584
ef5584
		$key_id = unique_id(hexdec(substr($this->session_id, 0, 8)));
ef5584
ef5584
		$sql_ary = array(
ef5584
			'key_id'		=> (string) md5($key_id),
ef5584
			'last_ip'		=> (string) $this->ip,
ef5584
			'last_login'	=> (int) time()
ef5584
		);
ef5584
ef5584
		if (!$key)
ef5584
		{
ef5584
			$sql_ary += array(
ef5584
				'user_id'	=> (int) $user_id
ef5584
			);
ef5584
		}
ef5584
ef5584
		if ($key)
ef5584
		{
ef5584
			$sql = 'UPDATE ' . SESSIONS_KEYS_TABLE . '
ef5584
				SET ' . $db->sql_build_array('UPDATE', $sql_ary) . '
ef5584
				WHERE user_id = ' . (int) $user_id . "
ef5584
					AND key_id = '" . $db->sql_escape(md5($key)) . "'";
ef5584
		}
ef5584
		else
ef5584
		{
ef5584
			$sql = 'INSERT INTO ' . SESSIONS_KEYS_TABLE . ' ' . $db->sql_build_array('INSERT', $sql_ary);
ef5584
		}
ef5584
		$db->sql_query($sql);
ef5584
ef5584
		$this->cookie_data['k'] = $key_id;
ef5584
ef5584
		return false;
ef5584
	}
ef5584
ef5584
	/**
ef5584
	* Reset all login keys for the specified user
ef5584
	*
ef5584
	* This method removes all current login keys for a specified (or the current)
ef5584
	* user. It will be called on password change to render old keys unusable
ef5584
	*/
ef5584
	function reset_login_keys($user_id = false)
ef5584
	{
ef5584
		global $config, $db;
ef5584
ef5584
		$user_id = ($user_id === false) ? $this->data['user_id'] : $user_id;
ef5584
ef5584
		$sql = 'DELETE FROM ' . SESSIONS_KEYS_TABLE . '
ef5584
			WHERE user_id = ' . (int) $user_id;
ef5584
		$db->sql_query($sql);
ef5584
ef5584
		// Let's also clear any current sessions for the specified user_id
ef5584
		// If it's the current user then we'll leave this session intact
ef5584
		$sql_where = 'session_user_id = ' . (int) $user_id;
ef5584
		$sql_where .= ($user_id === $this->data['user_id']) ? " AND session_id <> '" . $db->sql_escape($this->session_id) . "'" : '';
ef5584
ef5584
		$sql = 'DELETE FROM ' . SESSIONS_TABLE . "
ef5584
			WHERE $sql_where";
ef5584
		$db->sql_query($sql);
ef5584
ef5584
		// We're changing the password of the current user and they have a key
ef5584
		// Lets regenerate it to be safe
ef5584
		if ($user_id === $this->data['user_id'] && $this->cookie_data['k'])
ef5584
		{
ef5584
			$this->set_login_key($user_id);
ef5584
		}
ef5584
	}
ef5584
ef5584
ef5584
	/**
ef5584
	* Check if the request originated from the same page.
ef5584
	* @param bool $check_script_path If true, the path will be checked as well
ef5584
	*/
ef5584
	function validate_referer($check_script_path = false)
ef5584
	{
ef5584
		// no referer - nothing to validate, user's fault for turning it off (we only check on POST; so meta can't be the reason)
ef5584
		if (empty($this->referer) || empty($this->host))
ef5584
		{
ef5584
			return true;
ef5584
		}
ef5584
ef5584
		$host = htmlspecialchars($this->host);
ef5584
		$ref = substr($this->referer, strpos($this->referer, '://') + 3);
ef5584
ef5584
		if (!(stripos($ref, $host) === 0))
ef5584
		{
ef5584
			return false;
ef5584
		}
ef5584
		else if ($check_script_path && rtrim($this->page['root_script_path'], '/') !== '')
ef5584
		{
ef5584
			$ref = substr($ref, strlen($host));
ef5584
			$server_port = (!empty($_SERVER['SERVER_PORT'])) ? (int) $_SERVER['SERVER_PORT'] : (int) getenv('SERVER_PORT');
ef5584
ef5584
			if ($server_port !== 80 && $server_port !== 443 && stripos($ref, ":$server_port") === 0)
ef5584
			{
ef5584
				$ref = substr($ref, strlen(":$server_port"));
ef5584
			}
ef5584
ef5584
			if (!(stripos(rtrim($ref, '/'), rtrim($this->page['root_script_path'], '/')) === 0))
ef5584
			{
ef5584
				return false;
ef5584
			}
ef5584
		}
ef5584
ef5584
		return true;
ef5584
	}
ef5584
ef5584
ef5584
	function unset_admin()
ef5584
	{
ef5584
		global $db;
ef5584
		$sql = 'UPDATE ' . SESSIONS_TABLE . '
ef5584
			SET session_admin = 0
ef5584
			WHERE session_id = \'' . $db->sql_escape($this->session_id) . '\'';
ef5584
		$db->sql_query($sql);
ef5584
	}
ef5584
}
ef5584
ef5584
ef5584
/**
ef5584
* Base user class
ef5584
*
ef5584
* This is the overarching class which contains (through session extend)
ef5584
* all methods utilised for user functionality during a session.
ef5584
*
ef5584
* @package phpBB3
ef5584
*/
ef5584
class user extends session
ef5584
{
ef5584
	var $lang = array();
ef5584
	var $help = array();
ef5584
	var $theme = array();
ef5584
	var $date_format;
ef5584
	var $timezone;
ef5584
	var $dst;
ef5584
ef5584
	var $lang_name = false;
ef5584
	var $lang_id = false;
ef5584
	var $lang_path;
ef5584
	var $img_lang;
ef5584
	var $img_array = array();
ef5584
ef5584
	// Able to add new option (id 7)
ef5584
	var $keyoptions = array('viewimg' => 0, 'viewflash' => 1, 'viewsmilies' => 2, 'viewsigs' => 3, 'viewavatars' => 4, 'viewcensors' => 5, 'attachsig' => 6, 'bbcode' => 8, 'smilies' => 9, 'popuppm' => 10);
ef5584
	var $keyvalues = array();
ef5584
ef5584
	/**
ef5584
	* Constructor to set the lang path
ef5584
	*/
ef5584
	function user()
ef5584
	{
ef5584
		global $phpbb_root_path;
ef5584
ef5584
		$this->lang_path = $phpbb_root_path . 'language/';
ef5584
	}
ef5584
ef5584
	/**
ef5584
	* Function to set custom language path (able to use directory outside of phpBB)
ef5584
	*
ef5584
	* @param string $lang_path New language path used.
ef5584
	* @access public
ef5584
	*/
ef5584
	function set_custom_lang_path($lang_path)
ef5584
	{
ef5584
		$this->lang_path = $lang_path;
ef5584
ef5584
		if (substr($this->lang_path, -1) != '/')
ef5584
		{
ef5584
			$this->lang_path .= '/';
ef5584
		}
ef5584
	}
ef5584
ef5584
	/**
ef5584
	* Setup basic user-specific items (style, language, ...)
ef5584
	*/
ef5584
	function setup($lang_set = false, $style = false)
ef5584
	{
ef5584
		global $db, $template, $config, $auth, $phpEx, $phpbb_root_path, $cache;
ef5584
ef5584
		if ($this->data['user_id'] != ANONYMOUS)
ef5584
		{
ef5584
			$this->lang_name = (file_exists($this->lang_path . $this->data['user_lang'] . "/common.$phpEx")) ? $this->data['user_lang'] : basename($config['default_lang']);
ef5584
ef5584
			$this->date_format = $this->data['user_dateformat'];
ef5584
			$this->timezone = $this->data['user_timezone'] * 3600;
ef5584
			$this->dst = $this->data['user_dst'] * 3600;
ef5584
		}
ef5584
		else
ef5584
		{
ef5584
			$this->lang_name = basename($config['default_lang']);
ef5584
			$this->date_format = $config['default_dateformat'];
ef5584
			$this->timezone = $config['board_timezone'] * 3600;
ef5584
			$this->dst = $config['board_dst'] * 3600;
ef5584
ef5584
			/**
ef5584
			* If a guest user is surfing, we try to guess his/her language first by obtaining the browser language
ef5584
			* If re-enabled we need to make sure only those languages installed are checked
ef5584
			* Commented out so we do not loose the code.
ef5584
ef5584
			if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE']))
ef5584
			{
ef5584
				$accept_lang_ary = explode(',', $_SERVER['HTTP_ACCEPT_LANGUAGE']);
ef5584
ef5584
				foreach ($accept_lang_ary as $accept_lang)
ef5584
				{
ef5584
					// Set correct format ... guess full xx_YY form
ef5584
					$accept_lang = substr($accept_lang, 0, 2) . '_' . strtoupper(substr($accept_lang, 3, 2));
ef5584
					$accept_lang = basename($accept_lang);
ef5584
ef5584
					if (file_exists($this->lang_path . $accept_lang . "/common.$phpEx"))
ef5584
					{
ef5584
						$this->lang_name = $config['default_lang'] = $accept_lang;
ef5584
						break;
ef5584
					}
ef5584
					else
ef5584
					{
ef5584
						// No match on xx_YY so try xx
ef5584
						$accept_lang = substr($accept_lang, 0, 2);
ef5584
						$accept_lang = basename($accept_lang);
ef5584
ef5584
						if (file_exists($this->lang_path . $accept_lang . "/common.$phpEx"))
ef5584
						{
ef5584
							$this->lang_name = $config['default_lang'] = $accept_lang;
ef5584
							break;
ef5584
						}
ef5584
					}
ef5584
				}
ef5584
			}
ef5584
			*/
ef5584
		}
ef5584
ef5584
		// We include common language file here to not load it every time a custom language file is included
ef5584
		$lang = &$this->lang;
ef5584
ef5584
		if ((@include $this->lang_path . $this->lang_name . "/common.$phpEx") === false)
ef5584
		{
ef5584
			die('Language file ' . $this->lang_path . $this->lang_name . "/common.$phpEx" . " couldn't be opened.");
ef5584
		}
ef5584
ef5584
		$this->add_lang($lang_set);
ef5584
		unset($lang_set);
ef5584
ef5584
		if (!empty($_GET['style']) && $auth->acl_get('a_styles'))
ef5584
		{
ef5584
			global $SID, $_EXTRA_URL;
ef5584
ef5584
			$style = request_var('style', 0);
ef5584
			$SID .= '&style=' . $style;
ef5584
			$_EXTRA_URL = array('style=' . $style);
ef5584
		}
ef5584
		else
ef5584
		{
ef5584
			// Set up style
ef5584
			$style = ($style) ? $style : ((!$config['override_user_style']) ? $this->data['user_style'] : $config['default_style']);
ef5584
		}
ef5584
ef5584
		$sql = 'SELECT s.style_id, t.template_storedb, t.template_path, t.template_id, t.bbcode_bitfield, t.template_inherits_id, t.template_inherit_path, c.theme_path, c.theme_name, c.theme_storedb, c.theme_id, i.imageset_path, i.imageset_id, i.imageset_name
ef5584
			FROM ' . STYLES_TABLE . ' s, ' . STYLES_TEMPLATE_TABLE . ' t, ' . STYLES_THEME_TABLE . ' c, ' . STYLES_IMAGESET_TABLE . " i
ef5584
			WHERE s.style_id = $style
ef5584
				AND t.template_id = s.template_id
ef5584
				AND c.theme_id = s.theme_id
ef5584
				AND i.imageset_id = s.imageset_id";
ef5584
		$result = $db->sql_query($sql, 3600);
ef5584
		$this->theme = $db->sql_fetchrow($result);
ef5584
		$db->sql_freeresult($result);
ef5584
ef5584
		// User has wrong style
ef5584
		if (!$this->theme && $style == $this->data['user_style'])
ef5584
		{
ef5584
			$style = $this->data['user_style'] = $config['default_style'];
ef5584
ef5584
			$sql = 'UPDATE ' . USERS_TABLE . "
ef5584
				SET user_style = $style
ef5584
				WHERE user_id = {$this->data['user_id']}";
ef5584
			$db->sql_query($sql);
ef5584
ef5584
			$sql = 'SELECT s.style_id, t.template_storedb, t.template_path, t.template_id, t.bbcode_bitfield, c.theme_path, c.theme_name, c.theme_storedb, c.theme_id, i.imageset_path, i.imageset_id, i.imageset_name
ef5584
				FROM ' . STYLES_TABLE . ' s, ' . STYLES_TEMPLATE_TABLE . ' t, ' . STYLES_THEME_TABLE . ' c, ' . STYLES_IMAGESET_TABLE . " i
ef5584
				WHERE s.style_id = $style
ef5584
					AND t.template_id = s.template_id
ef5584
					AND c.theme_id = s.theme_id
ef5584
					AND i.imageset_id = s.imageset_id";
ef5584
			$result = $db->sql_query($sql, 3600);
ef5584
			$this->theme = $db->sql_fetchrow($result);
ef5584
			$db->sql_freeresult($result);
ef5584
		}
ef5584
ef5584
		if (!$this->theme)
ef5584
		{
ef5584
			trigger_error('Could not get style data', E_USER_ERROR);
ef5584
		}
ef5584
ef5584
		// Now parse the cfg file and cache it
ef5584
		$parsed_items = $cache->obtain_cfg_items($this->theme);
ef5584
ef5584
		// We are only interested in the theme configuration for now
ef5584
		$parsed_items = $parsed_items['theme'];
ef5584
ef5584
		$check_for = array(
ef5584
			'parse_css_file'	=> (int) 0,
ef5584
			'pagination_sep'	=> (string) ', '
ef5584
		);
ef5584
ef5584
		foreach ($check_for as $key => $default_value)
ef5584
		{
ef5584
			$this->theme[$key] = (isset($parsed_items[$key])) ? $parsed_items[$key] : $default_value;
ef5584
			settype($this->theme[$key], gettype($default_value));
ef5584
ef5584
			if (is_string($default_value))
ef5584
			{
ef5584
				$this->theme[$key] = htmlspecialchars($this->theme[$key]);
ef5584
			}
ef5584
		}
ef5584
ef5584
		// If the style author specified the theme needs to be cached
ef5584
		// (because of the used paths and variables) than make sure it is the case.
ef5584
		// For example, if the theme uses language-specific images it needs to be stored in db.
ef5584
		if (!$this->theme['theme_storedb'] && $this->theme['parse_css_file'])
ef5584
		{
ef5584
			$this->theme['theme_storedb'] = 1;
ef5584
ef5584
			$stylesheet = file_get_contents("{$phpbb_root_path}styles/{$this->theme['theme_path']}/theme/stylesheet.css");
ef5584
			// Match CSS imports
ef5584
			$matches = array();
ef5584
			preg_match_all('/@import url\(["\'](.*)["\']\);/i', $stylesheet, $matches);
ef5584
ef5584
			if (sizeof($matches))
ef5584
			{
ef5584
				$content = '';
ef5584
				foreach ($matches[0] as $idx => $match)
ef5584
				{
ef5584
					if ($content = @file_get_contents("{$phpbb_root_path}styles/{$this->theme['theme_path']}/theme/" . $matches[1][$idx]))
ef5584
					{
ef5584
						$content = trim($content);
ef5584
					}
ef5584
					else
ef5584
					{
ef5584
						$content = '';
ef5584
					}
ef5584
					$stylesheet = str_replace($match, $content, $stylesheet);
ef5584
				}
ef5584
				unset($content);
ef5584
			}
ef5584
ef5584
			$stylesheet = str_replace('./', 'styles/' . $this->theme['theme_path'] . '/theme/', $stylesheet);
ef5584
ef5584
			$sql_ary = array(
ef5584
				'theme_data'	=> $stylesheet,
ef5584
				'theme_mtime'	=> time(),
ef5584
				'theme_storedb'	=> 1
ef5584
			);
ef5584
ef5584
			$sql = 'UPDATE ' . STYLES_THEME_TABLE . '
ef5584
				SET ' . $db->sql_build_array('UPDATE', $sql_ary) . '
ef5584
				WHERE theme_id = ' . $this->theme['theme_id'];
ef5584
			$db->sql_query($sql);
ef5584
ef5584
			unset($sql_ary);
ef5584
		}
ef5584
ef5584
		$template->set_template();
ef5584
ef5584
		$this->img_lang = (file_exists($phpbb_root_path . 'styles/' . $this->theme['imageset_path'] . '/imageset/' . $this->lang_name)) ? $this->lang_name : $config['default_lang'];
ef5584
ef5584
		$sql = 'SELECT image_name, image_filename, image_lang, image_height, image_width
ef5584
			FROM ' . STYLES_IMAGESET_DATA_TABLE . '
ef5584
			WHERE imageset_id = ' . $this->theme['imageset_id'] . "
ef5584
			AND image_filename <> ''
ef5584
			AND image_lang IN ('" . $db->sql_escape($this->img_lang) . "', '')";
ef5584
		$result = $db->sql_query($sql, 3600);
ef5584
ef5584
		$localised_images = false;
ef5584
		while ($row = $db->sql_fetchrow($result))
ef5584
		{
ef5584
			if ($row['image_lang'])
ef5584
			{
ef5584
				$localised_images = true;
ef5584
			}
ef5584
ef5584
			$row['image_filename'] = rawurlencode($row['image_filename']);
ef5584
			$this->img_array[$row['image_name']] = $row;
ef5584
		}
ef5584
		$db->sql_freeresult($result);
ef5584
ef5584
		// there were no localised images, try to refresh the localised imageset for the user's language
ef5584
		if (!$localised_images)
ef5584
		{
ef5584
			// Attention: this code ignores the image definition list from acp_styles and just takes everything
ef5584
			// that the config file contains
ef5584
			$sql_ary = array();
ef5584
ef5584
			$db->sql_transaction('begin');
ef5584
ef5584
			$sql = 'DELETE FROM ' . STYLES_IMAGESET_DATA_TABLE . '
ef5584
				WHERE imageset_id = ' . $this->theme['imageset_id'] . '
ef5584
					AND image_lang = \'' . $db->sql_escape($this->img_lang) . '\'';
ef5584
			$result = $db->sql_query($sql);
ef5584
ef5584
			if (@file_exists("{$phpbb_root_path}styles/{$this->theme['imageset_path']}/imageset/{$this->img_lang}/imageset.cfg"))
ef5584
			{
ef5584
				$cfg_data_imageset_data = parse_cfg_file("{$phpbb_root_path}styles/{$this->theme['imageset_path']}/imageset/{$this->img_lang}/imageset.cfg");
ef5584
				foreach ($cfg_data_imageset_data as $image_name => $value)
ef5584
				{
ef5584
					if (strpos($value, '*') !== false)
ef5584
					{
ef5584
						if (substr($value, -1, 1) === '*')
ef5584
						{
ef5584
							list($image_filename, $image_height) = explode('*', $value);
ef5584
							$image_width = 0;
ef5584
						}
ef5584
						else
ef5584
						{
ef5584
							list($image_filename, $image_height, $image_width) = explode('*', $value);
ef5584
						}
ef5584
					}
ef5584
					else
ef5584
					{
ef5584
						$image_filename = $value;
ef5584
						$image_height = $image_width = 0;
ef5584
					}
ef5584
ef5584
					if (strpos($image_name, 'img_') === 0 && $image_filename)
ef5584
					{
ef5584
						$image_name = substr($image_name, 4);
ef5584
						$sql_ary[] = array(
ef5584
							'image_name'		=> (string) $image_name,
ef5584
							'image_filename'	=> (string) $image_filename,
ef5584
							'image_height'		=> (int) $image_height,
ef5584
							'image_width'		=> (int) $image_width,
ef5584
							'imageset_id'		=> (int) $this->theme['imageset_id'],
ef5584
							'image_lang'		=> (string) $this->img_lang,
ef5584
						);
ef5584
					}
ef5584
				}
ef5584
			}
ef5584
ef5584
			if (sizeof($sql_ary))
ef5584
			{
ef5584
				$db->sql_multi_insert(STYLES_IMAGESET_DATA_TABLE, $sql_ary);
ef5584
				$db->sql_transaction('commit');
ef5584
				$cache->destroy('sql', STYLES_IMAGESET_DATA_TABLE);
ef5584
ef5584
				add_log('admin', 'LOG_IMAGESET_LANG_REFRESHED', $this->theme['imageset_name'], $this->img_lang);
ef5584
			}
ef5584
			else
ef5584
			{
ef5584
				$db->sql_transaction('commit');
ef5584
				add_log('admin', 'LOG_IMAGESET_LANG_MISSING', $this->theme['imageset_name'], $this->img_lang);
ef5584
			}
ef5584
		}
ef5584
ef5584
		// Call phpbb_user_session_handler() in case external application want to "bend" some variables or replace classes...
ef5584
		// After calling it we continue script execution...
ef5584
		phpbb_user_session_handler();
ef5584
ef5584
		// If this function got called from the error handler we are finished here.
ef5584
		if (defined('IN_ERROR_HANDLER'))
ef5584
		{
ef5584
			return;
ef5584
		}
ef5584
ef5584
		// Disable board if the install/ directory is still present
ef5584
		// For the brave development army we do not care about this, else we need to comment out this everytime we develop locally
ef5584
		if (!defined('DEBUG_EXTRA') && !defined('ADMIN_START') && !defined('IN_INSTALL') && !defined('IN_LOGIN') && file_exists($phpbb_root_path . 'install'))
ef5584
		{
ef5584
			// Adjust the message slightly according to the permissions
ef5584
			if ($auth->acl_gets('a_', 'm_') || $auth->acl_getf_global('m_'))
ef5584
			{
ef5584
				$message = 'REMOVE_INSTALL';
ef5584
			}
ef5584
			else
ef5584
			{
ef5584
				$message = (!empty($config['board_disable_msg'])) ? $config['board_disable_msg'] : 'BOARD_DISABLE';
ef5584
			}
ef5584
			trigger_error($message);
ef5584
		}
ef5584
ef5584
		// Is board disabled and user not an admin or moderator?
ef5584
		if ($config['board_disable'] && !defined('IN_LOGIN') && !$auth->acl_gets('a_', 'm_') && !$auth->acl_getf_global('m_'))
ef5584
		{
ef5584
			header('HTTP/1.1 503 Service Unavailable');
ef5584
ef5584
			$message = (!empty($config['board_disable_msg'])) ? $config['board_disable_msg'] : 'BOARD_DISABLE';
ef5584
			trigger_error($message);
ef5584
		}
ef5584
ef5584
		// Is load exceeded?
ef5584
		if ($config['limit_load'] && $this->load !== false)
ef5584
		{
ef5584
			if ($this->load > floatval($config['limit_load']) && !defined('IN_LOGIN'))
ef5584
			{
ef5584
				// Set board disabled to true to let the admins/mods get the proper notification
ef5584
				$config['board_disable'] = '1';
ef5584
ef5584
				if (!$auth->acl_gets('a_', 'm_') && !$auth->acl_getf_global('m_'))
ef5584
				{
ef5584
					header('HTTP/1.1 503 Service Unavailable');
ef5584
					trigger_error('BOARD_UNAVAILABLE');
ef5584
				}
ef5584
			}
ef5584
		}
ef5584
ef5584
		if (isset($this->data['session_viewonline']))
ef5584
		{
ef5584
			// Make sure the user is able to hide his session
ef5584
			if (!$this->data['session_viewonline'])
ef5584
			{
ef5584
				// Reset online status if not allowed to hide the session...
ef5584
				if (!$auth->acl_get('u_hideonline'))
ef5584
				{
ef5584
					$sql = 'UPDATE ' . SESSIONS_TABLE . '
ef5584
						SET session_viewonline = 1
ef5584
						WHERE session_user_id = ' . $this->data['user_id'];
ef5584
					$db->sql_query($sql);
ef5584
					$this->data['session_viewonline'] = 1;
ef5584
				}
ef5584
			}
ef5584
			else if (!$this->data['user_allow_viewonline'])
ef5584
			{
ef5584
				// the user wants to hide and is allowed to  -> cloaking device on.
ef5584
				if ($auth->acl_get('u_hideonline'))
ef5584
				{
ef5584
					$sql = 'UPDATE ' . SESSIONS_TABLE . '
ef5584
						SET session_viewonline = 0
ef5584
						WHERE session_user_id = ' . $this->data['user_id'];
ef5584
					$db->sql_query($sql);
ef5584
					$this->data['session_viewonline'] = 0;
ef5584
				}
ef5584
			}
ef5584
		}
ef5584
ef5584
ef5584
		// Does the user need to change their password? If so, redirect to the
ef5584
		// ucp profile reg_details page ... of course do not redirect if we're already in the ucp
ef5584
		if (!defined('IN_ADMIN') && !defined('ADMIN_START') && $config['chg_passforce'] && $this->data['is_registered'] && $auth->acl_get('u_chgpasswd') && $this->data['user_passchg'] < time() - ($config['chg_passforce'] * 86400))
ef5584
		{
ef5584
			if (strpos($this->page['query_string'], 'mode=reg_details') === false && $this->page['page_name'] != "ucp.$phpEx")
ef5584
			{
ef5584
				redirect(append_sid("{$phpbb_root_path}ucp.$phpEx", 'i=profile&mode=reg_details'));
ef5584
			}
ef5584
		}
ef5584
ef5584
		return;
ef5584
	}
ef5584
ef5584
	/**
ef5584
	* More advanced language substitution
ef5584
	* Function to mimic sprintf() with the possibility of using phpBB's language system to substitute nullar/singular/plural forms.
ef5584
	* Params are the language key and the parameters to be substituted.
ef5584
	* This function/functionality is inspired by SHS` and Ashe.
ef5584
	*
ef5584
	* Example call: <samp>$user->lang('NUM_POSTS_IN_QUEUE', 1);</samp>
ef5584
	*/
ef5584
	function lang()
ef5584
	{
ef5584
		$args = func_get_args();
ef5584
		$key = $args[0];
ef5584
ef5584
		if (is_array($key))
ef5584
		{
ef5584
			$lang = &$this->lang[array_shift($key)];
ef5584
ef5584
			foreach ($key as $_key)
ef5584
			{
ef5584
				$lang = &$lang[$_key];
ef5584
			}
ef5584
		}
ef5584
		else
ef5584
		{
ef5584
			$lang = &$this->lang[$key];
ef5584
		}
ef5584
ef5584
		// Return if language string does not exist
ef5584
		if (!isset($lang) || (!is_string($lang) && !is_array($lang)))
ef5584
		{
ef5584
			return $key;
ef5584
		}
ef5584
ef5584
		// If the language entry is a string, we simply mimic sprintf() behaviour
ef5584
		if (is_string($lang))
ef5584
		{
ef5584
			if (sizeof($args) == 1)
ef5584
			{
ef5584
				return $lang;
ef5584
			}
ef5584
ef5584
			// Replace key with language entry and simply pass along...
ef5584
			$args[0] = $lang;
ef5584
			return call_user_func_array('sprintf', $args);
ef5584
		}
ef5584
ef5584
		// It is an array... now handle different nullar/singular/plural forms
ef5584
		$key_found = false;
ef5584
ef5584
		// We now get the first number passed and will select the key based upon this number
ef5584
		for ($i = 1, $num_args = sizeof($args); $i < $num_args; $i++)
ef5584
		{
ef5584
			if (is_int($args[$i]))
ef5584
			{
ef5584
				$numbers = array_keys($lang);
ef5584
ef5584
				foreach ($numbers as $num)
ef5584
				{
ef5584
					if ($num > $args[$i])
ef5584
					{
ef5584
						break;
ef5584
					}
ef5584
ef5584
					$key_found = $num;
ef5584
				}
ef5584
			}
ef5584
		}
ef5584
ef5584
		// Ok, let's check if the key was found, else use the last entry (because it is mostly the plural form)
ef5584
		if ($key_found === false)
ef5584
		{
ef5584
			$numbers = array_keys($lang);
ef5584
			$key_found = end($numbers);
ef5584
		}
ef5584
ef5584
		// Use the language string we determined and pass it to sprintf()
ef5584
		$args[0] = $lang[$key_found];
ef5584
		return call_user_func_array('sprintf', $args);
ef5584
	}
ef5584
ef5584
	/**
ef5584
	* Add Language Items - use_db and use_help are assigned where needed (only use them to force inclusion)
ef5584
	*
ef5584
	* @param mixed $lang_set specifies the language entries to include
ef5584
	* @param bool $use_db internal variable for recursion, do not use
ef5584
	* @param bool $use_help internal variable for recursion, do not use
ef5584
	*
ef5584
	* Examples:
ef5584
	* 
ef5584
	* $lang_set = array('posting', 'help' => 'faq');
ef5584
	* $lang_set = array('posting', 'viewtopic', 'help' => array('bbcode', 'faq'))
ef5584
	* $lang_set = array(array('posting', 'viewtopic'), 'help' => array('bbcode', 'faq'))
ef5584
	* $lang_set = 'posting'
ef5584
	* $lang_set = array('help' => 'faq', 'db' => array('help:faq', 'posting'))
ef5584
	* 
ef5584
	*/
ef5584
	function add_lang($lang_set, $use_db = false, $use_help = false)
ef5584
	{
ef5584
		global $phpEx;
ef5584
ef5584
		if (is_array($lang_set))
ef5584
		{
ef5584
			foreach ($lang_set as $key => $lang_file)
ef5584
			{
ef5584
				// Please do not delete this line.
ef5584
				// We have to force the type here, else [array] language inclusion will not work
ef5584
				$key = (string) $key;
ef5584
ef5584
				if ($key == 'db')
ef5584
				{
ef5584
					$this->add_lang($lang_file, true, $use_help);
ef5584
				}
ef5584
				else if ($key == 'help')
ef5584
				{
ef5584
					$this->add_lang($lang_file, $use_db, true);
ef5584
				}
ef5584
				else if (!is_array($lang_file))
ef5584
				{
ef5584
					$this->set_lang($this->lang, $this->help, $lang_file, $use_db, $use_help);
ef5584
				}
ef5584
				else
ef5584
				{
ef5584
					$this->add_lang($lang_file, $use_db, $use_help);
ef5584
				}
ef5584
			}
ef5584
			unset($lang_set);
ef5584
		}
ef5584
		else if ($lang_set)
ef5584
		{
ef5584
			$this->set_lang($this->lang, $this->help, $lang_set, $use_db, $use_help);
ef5584
		}
ef5584
	}
ef5584
ef5584
	/**
ef5584
	* Set language entry (called by add_lang)
ef5584
	* @access private
ef5584
	*/
ef5584
	function set_lang(&$lang, &$help, $lang_file, $use_db = false, $use_help = false)
ef5584
	{
ef5584
		global $phpEx;
ef5584
ef5584
		// Make sure the language name is set (if the user setup did not happen it is not set)
ef5584
		if (!$this->lang_name)
ef5584
		{
ef5584
			global $config;
ef5584
			$this->lang_name = basename($config['default_lang']);
ef5584
		}
ef5584
ef5584
		// $lang == $this->lang
ef5584
		// $help == $this->help
ef5584
		// - add appropriate variables here, name them as they are used within the language file...
ef5584
		if (!$use_db)
ef5584
		{
ef5584
			if ($use_help && strpos($lang_file, '/') !== false)
ef5584
			{
ef5584
				$language_filename = $this->lang_path . $this->lang_name . '/' . substr($lang_file, 0, stripos($lang_file, '/') + 1) . 'help_' . substr($lang_file, stripos($lang_file, '/') + 1) . '.' . $phpEx;
ef5584
			}
ef5584
			else
ef5584
			{
ef5584
				$language_filename = $this->lang_path . $this->lang_name . '/' . (($use_help) ? 'help_' : '') . $lang_file . '.' . $phpEx;
ef5584
			}
ef5584
ef5584
			if ((@include $language_filename) === false)
ef5584
			{
ef5584
				trigger_error('Language file ' . $language_filename . ' couldn\'t be opened.', E_USER_ERROR);
ef5584
			}
ef5584
		}
ef5584
		else if ($use_db)
ef5584
		{
ef5584
			// Get Database Language Strings
ef5584
			// Put them into $lang if nothing is prefixed, put them into $help if help: is prefixed
ef5584
			// For example: help:faq, posting
ef5584
		}
ef5584
	}
ef5584
ef5584
	/**
ef5584
	* Format user date
ef5584
	*
ef5584
	* @param int $gmepoch unix timestamp
ef5584
	* @param string $format date format in date() notation. | used to indicate relative dates, for example |d m Y|, h:i is translated to Today, h:i.
ef5584
	* @param bool $forcedate force non-relative date format.
ef5584
	*
ef5584
	* @return mixed translated date
ef5584
	*/
ef5584
	function format_date($gmepoch, $format = false, $forcedate = false)
ef5584
	{
ef5584
		static $midnight;
ef5584
		static $date_cache;
ef5584
ef5584
		$format = (!$format) ? $this->date_format : $format;
ef5584
		$now = time();
ef5584
		$delta = $now - $gmepoch;
ef5584
ef5584
		if (!isset($date_cache[$format]))
ef5584
		{
ef5584
			// Is the user requesting a friendly date format (i.e. 'Today 12:42')?
ef5584
			$date_cache[$format] = array(
ef5584
				'is_short'		=> strpos($format, '|'),
ef5584
				'zone_offset'	=> $this->timezone + $this->dst,
ef5584
				'format_short'	=> substr($format, 0, strpos($format, '|')) . '||' . substr(strrchr($format, '|'), 1),
ef5584
				'format_long'	=> str_replace('|', '', $format),
ef5584
				'lang'			=> $this->lang['datetime'],
ef5584
			);
ef5584
ef5584
			// Short representation of month in format? Some languages use different terms for the long and short format of May
ef5584
			if ((strpos($format, '\M') === false && strpos($format, 'M') !== false) || (strpos($format, '\r') === false && strpos($format, 'r') !== false))
ef5584
			{
ef5584
				$date_cache[$format]['lang']['May'] = $this->lang['datetime']['May_short'];
ef5584
			}
ef5584
		}
ef5584
ef5584
		// Show date <= 1 hour ago as 'xx min ago'
ef5584
		// A small tolerence is given for times in the future and times in the future but in the same minute are displayed as '< than a minute ago'
ef5584
		if ($delta <= 3600 && ($delta >= -5 || (($now / 60) % 60) == (($gmepoch / 60) % 60)) && $date_cache[$format]['is_short'] !== false && !$forcedate && isset($this->lang['datetime']['AGO']))
ef5584
		{
ef5584
			return $this->lang(array('datetime', 'AGO'), max(0, (int) floor($delta / 60)));
ef5584
		}
ef5584
ef5584
		if (!$midnight)
ef5584
		{
ef5584
			list($d, $m, $y) = explode(' ', gmdate('j n Y', time() + $date_cache[$format]['zone_offset']));
ef5584
			$midnight = gmmktime(0, 0, 0, $m, $d, $y) - $date_cache[$format]['zone_offset'];
ef5584
		}
ef5584
ef5584
		if ($date_cache[$format]['is_short'] !== false && !$forcedate)
ef5584
		{
ef5584
			$day = false;
ef5584
ef5584
			if ($gmepoch > $midnight + 86400)
ef5584
			{
ef5584
				$day = 'TOMORROW';
ef5584
			}
ef5584
			else if ($gmepoch > $midnight)
ef5584
			{
ef5584
				$day = 'TODAY';
ef5584
			}
ef5584
			else if ($gmepoch > $midnight - 86400)
ef5584
			{
ef5584
				$day = 'YESTERDAY';
ef5584
			}
ef5584
ef5584
			if ($day !== false)
ef5584
			{
ef5584
				return str_replace('||', $this->lang['datetime'][$day], strtr(@gmdate($date_cache[$format]['format_short'], $gmepoch + $date_cache[$format]['zone_offset']), $date_cache[$format]['lang']));
ef5584
			}
ef5584
		}
ef5584
ef5584
		return strtr(@gmdate($date_cache[$format]['format_long'], $gmepoch + $date_cache[$format]['zone_offset']), $date_cache[$format]['lang']);
ef5584
	}
ef5584
ef5584
	/**
ef5584
	* Get language id currently used by the user
ef5584
	*/
ef5584
	function get_iso_lang_id()
ef5584
	{
ef5584
		global $config, $db;
ef5584
ef5584
		if (!empty($this->lang_id))
ef5584
		{
ef5584
			return $this->lang_id;
ef5584
		}
ef5584
ef5584
		if (!$this->lang_name)
ef5584
		{
ef5584
			$this->lang_name = $config['default_lang'];
ef5584
		}
ef5584
ef5584
		$sql = 'SELECT lang_id
ef5584
			FROM ' . LANG_TABLE . "
ef5584
			WHERE lang_iso = '" . $db->sql_escape($this->lang_name) . "'";
ef5584
		$result = $db->sql_query($sql);
ef5584
		$this->lang_id = (int) $db->sql_fetchfield('lang_id');
ef5584
		$db->sql_freeresult($result);
ef5584
ef5584
		return $this->lang_id;
ef5584
	}
ef5584
ef5584
	/**
ef5584
	* Get users profile fields
ef5584
	*/
ef5584
	function get_profile_fields($user_id)
ef5584
	{
ef5584
		global $db;
ef5584
ef5584
		if (isset($this->profile_fields))
ef5584
		{
ef5584
			return;
ef5584
		}
ef5584
ef5584
		$sql = 'SELECT *
ef5584
			FROM ' . PROFILE_FIELDS_DATA_TABLE . "
ef5584
			WHERE user_id = $user_id";
ef5584
		$result = $db->sql_query_limit($sql, 1);
ef5584
		$this->profile_fields = (!($row = $db->sql_fetchrow($result))) ? array() : $row;
ef5584
		$db->sql_freeresult($result);
ef5584
	}
ef5584
ef5584
	/**
ef5584
	* Specify/Get image
ef5584
	* $suffix is no longer used - we know it. ;) It is there for backward compatibility.
ef5584
	*/
ef5584
	function img($img, $alt = '', $width = false, $suffix = '', $type = 'full_tag')
ef5584
	{
ef5584
		static $imgs;
ef5584
		global $phpbb_root_path;
ef5584
ef5584
		$img_data = &$imgs[$img];
ef5584
ef5584
		if (empty($img_data))
ef5584
		{
ef5584
			if (!isset($this->img_array[$img]))
ef5584
			{
ef5584
				// Do not fill the image to let designers decide what to do if the image is empty
ef5584
				$img_data = '';
ef5584
				return $img_data;
ef5584
			}
ef5584
ef5584
			$img_data['src'] = $phpbb_root_path . 'styles/' . $this->theme['imageset_path'] . '/imageset/' . ($this->img_array[$img]['image_lang'] ? $this->img_array[$img]['image_lang'] .'/' : '') . $this->img_array[$img]['image_filename'];
ef5584
			$img_data['width'] = $this->img_array[$img]['image_width'];
ef5584
			$img_data['height'] = $this->img_array[$img]['image_height'];
ef5584
		}
ef5584
ef5584
		$alt = (!empty($this->lang[$alt])) ? $this->lang[$alt] : $alt;
ef5584
ef5584
		switch ($type)
ef5584
		{
ef5584
			case 'src':
ef5584
				return $img_data['src'];
ef5584
			break;
ef5584
ef5584
			case 'width':
ef5584
				return ($width === false) ? $img_data['width'] : $width;
ef5584
			break;
ef5584
ef5584
			case 'height':
ef5584
				return $img_data['height'];
ef5584
			break;
ef5584
ef5584
			default:
ef5584
				$use_width = ($width === false) ? $img_data['width'] : $width;
ef5584
ef5584
				return '' . $alt . '';
ef5584
			break;
ef5584
		}
ef5584
	}
ef5584
ef5584
	/**
ef5584
	* Get option bit field from user options
ef5584
	*/
ef5584
	function optionget($key, $data = false)
ef5584
	{
ef5584
		if (!isset($this->keyvalues[$key]))
ef5584
		{
ef5584
			$var = ($data) ? $data : $this->data['user_options'];
ef5584
			$this->keyvalues[$key] = ($var & 1 << $this->keyoptions[$key]) ? true : false;
ef5584
		}
ef5584
ef5584
		return $this->keyvalues[$key];
ef5584
	}
ef5584
ef5584
	/**
ef5584
	* Set option bit field for user options
ef5584
	*/
ef5584
	function optionset($key, $value, $data = false)
ef5584
	{
ef5584
		$var = ($data) ? $data : $this->data['user_options'];
ef5584
ef5584
		if ($value && !($var & 1 << $this->keyoptions[$key]))
ef5584
		{
ef5584
			$var += 1 << $this->keyoptions[$key];
ef5584
		}
ef5584
		else if (!$value && ($var & 1 << $this->keyoptions[$key]))
ef5584
		{
ef5584
			$var -= 1 << $this->keyoptions[$key];
ef5584
		}
ef5584
		else
ef5584
		{
ef5584
			return ($data) ? $var : false;
ef5584
		}
ef5584
ef5584
		if (!$data)
ef5584
		{
ef5584
			$this->data['user_options'] = $var;
ef5584
			return true;
ef5584
		}
ef5584
		else
ef5584
		{
ef5584
			return $var;
ef5584
		}
ef5584
	}
ef5584
}
ef5584
ef5584
?>