php-phpbb/phpBB/common.php

<?php
/**
*
* @package phpBB3
* @version $Id$
* @copyright (c) 2005 phpBB Group
* @license http://opensource.org/licenses/gpl-license.php GNU Public License
*
* Minimum Requirement: PHP 5.2.0+
*/

/**
*/
if (!defined('IN_PHPBB'))
{
	exit;
}

$starttime = explode(' ', microtime());
$starttime = $starttime[1] + $starttime[0];

// Report all errors, except notices
error_reporting(E_ALL ^ E_NOTICE);
date_default_timezone_set('UTC');

/*
* Remove variables created by register_globals from the global scope
* Thanks to Matt Kavanagh
*/
function deregister_globals()
{
	$not_unset = array(
		'GLOBALS'	=> true,
		'_GET'		=> true,
		'_POST'		=> true,
		'_COOKIE'	=> true,
		'_REQUEST'	=> true,
		'_SERVER'	=> true,
		'_SESSION'	=> true,
		'_ENV'		=> true,
		'_FILES'	=> true,
		'phpEx'		=> true,
		'phpbb_root_path'	=> true
	);

	// Not only will array_merge and array_keys give a warning if
	// a parameter is not an array, array_merge will actually fail.
	// So we check if _SESSION has been initialised.
	if (!isset($_SESSION) || !is_array($_SESSION))
	{
		$_SESSION = array();
	}

	// Merge all into one extremely huge array; unset this later
	$input = array_merge(
		array_keys($_GET),
		array_keys($_POST),
		array_keys($_COOKIE),
		array_keys($_SERVER),
		array_keys($_SESSION),
		array_keys($_ENV),
		array_keys($_FILES)
	);

	foreach ($input as $varname)
	{
		if (isset($not_unset[$varname]))
		{
			// Hacking attempt. No point in continuing unless it's a COOKIE
			if ($varname !== 'GLOBALS' || isset($_GET['GLOBALS']) || isset($_POST['GLOBALS']) || isset($_SERVER['GLOBALS']) || isset($_SESSION['GLOBALS']) || isset($_ENV['GLOBALS']) || isset($_FILES['GLOBALS']))
			{
				exit;
			}
			else
			{
				$cookie = &$_COOKIE;
				while (isset($cookie['GLOBALS']))
				{
					foreach ($cookie['GLOBALS'] as $registered_var => $value)
					{
						if (!isset($not_unset[$registered_var]))
						{
							unset($GLOBALS[$registered_var]);
						}
					}
					$cookie = &$cookie['GLOBALS'];
				}
			}
		}

		unset($GLOBALS[$varname]);
	}

	unset($input);
}

// If we are on PHP >= 6.0.0 we do not need some code
if (version_compare(PHP_VERSION, '6.0.0-dev', '>='))
{
	/**
	* @ignore
	*/
	define('STRIP', false);
}
else
{
	set_magic_quotes_runtime(0);

	// Be paranoid with passed vars
	if (@ini_get('register_globals') == '1' || strtolower(@ini_get('register_globals')) == 'on' || !function_exists('ini_get'))
	{
		deregister_globals();
	}

	define('STRIP', (get_magic_quotes_gpc()) ? true : false);
}

if (defined('IN_CRON'))
{
	@define('PHPBB_ROOT_PATH', dirname(__FILE__) . DIRECTORY_SEPARATOR);
}

if (!file_exists(PHPBB_ROOT_PATH . 'config.' . PHP_EXT))
{
	die('<p>The config.' . PHP_EXT . ' file could not be found.</p><p><a href="' . PHPBB_ROOT_PATH . 'install/index.' . PHP_EXT . '">Click here to install phpBB</a></p>');
}

require(PHPBB_ROOT_PATH . 'config.' . PHP_EXT);

if (!defined('PHPBB_INSTALLED'))
{
	// Redirect the user to the installer
	// We have to generate a full HTTP/1.1 header here since we can't guarantee to have any of the information
	// available as used by the redirect function
	$server_name = (!empty($_SERVER['HTTP_HOST'])) ? strtolower($_SERVER['HTTP_HOST']) : ((!empty($_SERVER['SERVER_NAME'])) ? $_SERVER['SERVER_NAME'] : getenv('SERVER_NAME'));
	$server_port = (!empty($_SERVER['SERVER_PORT'])) ? (int) $_SERVER['SERVER_PORT'] : (int) getenv('SERVER_PORT');
	$secure = (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == 'on') ? 1 : 0;

	$script_name = (!empty($_SERVER['PHP_SELF'])) ? $_SERVER['PHP_SELF'] : getenv('PHP_SELF');
	if (!$script_name)
	{
		$script_name = (!empty($_SERVER['REQUEST_URI'])) ? $_SERVER['REQUEST_URI'] : getenv('REQUEST_URI');
	}

	// Replace any number of consecutive backslashes and/or slashes with a single slash
	// (could happen on some proxy setups and/or Windows servers)
	$script_path = trim(dirname($script_name)) . '/install/index.' . PHP_EXT;
	$script_path = preg_replace('#[\\\\/]{2,}#', '/', $script_path);

	$url = (($secure) ? 'https://' : 'http://') . $server_name;

	if ($server_port && (($secure && $server_port <> 443) || (!$secure && $server_port <> 80)))
	{
		// HTTP HOST can carry a port number...
		if (strpos($server_name, ':') === false)
		{
			$url .= ':' . $server_port;
		}
	}

	$url .= $script_path;
	header('Location: ' . $url);
	exit;
}

if (defined('DEBUG_EXTRA'))
{
	$base_memory_usage = 0;
	if (function_exists('memory_get_usage'))
	{
		$base_memory_usage = memory_get_usage();
	}
}

// Load Extensions
if (!empty($load_extensions))
{
	$load_extensions = explode(',', $load_extensions);

	foreach ($load_extensions as $extension)
	{
		@dl(trim($extension));
	}
}

// Include files
require(PHPBB_ROOT_PATH . 'includes/acm/acm_' . $acm_type . '.' . PHP_EXT);
require(PHPBB_ROOT_PATH . 'includes/cache.' . PHP_EXT);
require(PHPBB_ROOT_PATH . 'includes/template.' . PHP_EXT);
require(PHPBB_ROOT_PATH . 'includes/session.' . PHP_EXT);
require(PHPBB_ROOT_PATH . 'includes/auth.' . PHP_EXT);

require(PHPBB_ROOT_PATH . 'includes/functions.' . PHP_EXT);
require(PHPBB_ROOT_PATH . 'includes/functions_content.' . PHP_EXT);

require(PHPBB_ROOT_PATH . 'includes/constants.' . PHP_EXT);
require(PHPBB_ROOT_PATH . 'includes/db/' . $dbms . '.' . PHP_EXT);
require(PHPBB_ROOT_PATH . 'includes/utf/utf_tools.' . PHP_EXT);

// Set PHP error handler to ours
set_error_handler(defined('PHPBB_MSG_HANDLER') ? PHPBB_MSG_HANDLER : 'msg_handler');

// Instantiate some basic classes
$user		= new user();
$auth		= new auth();
$template	= new template();
$cache		= new acm();
$db			= new $sql_db();

// Connect to DB
$db->sql_connect($dbhost, $dbuser, $dbpasswd, $dbname, $dbport, false, defined('PHPBB_DB_NEW_LINK') ? PHPBB_DB_NEW_LINK : false);

// We do not need this any longer, unset for safety purposes
unset($dbpasswd);

// Grab global variables, re-cache if necessary
$config = cache::obtain_config();

// Add own hook handler
require(PHPBB_ROOT_PATH . 'includes/hooks/index.' . PHP_EXT);
$phpbb_hook = new phpbb_hook(array('exit_handler', 'phpbb_user_session_handler', 'append_sid', array('template', 'display')));

foreach (cache::obtain_hooks() as $hook)
{
	@include(PHPBB_ROOT_PATH . 'includes/hooks/' . $hook . '.' . PHP_EXT);
}

?>