/**

*

* @package install

* @version $Id: index.php 8895 2008-09-19 16:54:03Z acydburn $

* @copyright (c) 2005 phpBB Group

* @license http://opensource.org/licenses/gpl-license.php GNU Public License

*

*/

/**#@+

* @ignore

*/

define('IN_PHPBB', true);

define('IN_INSTALL', true);

/**#@-*/

$phpbb_root_path = (defined('PHPBB_ROOT_PATH')) ? PHPBB_ROOT_PATH : './../';

$phpEx = substr(strrchr(__FILE__, '.'), 1);

// Report all errors, except notices

error_reporting(E_ALL ^ E_NOTICE);

// @todo Review this test and see if we can find out what it is which prevents PHP 4.2.x from even displaying the page with requirements on it

if (version_compare(PHP_VERSION, '4.3.3') < 0)

{

	die('You are running an unsupported PHP version. Please upgrade to PHP 4.3.3 or higher before trying to install phpBB 3.0');

}

/*

* 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')

	{

		deregister_globals();

	}

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

}

// Try to override some limits - maybe it helps some...

@set_time_limit(0);

$mem_limit = @ini_get('memory_limit');

if (!empty($mem_limit))

{

	$unit = strtolower(substr($mem_limit, -1, 1));

	$mem_limit = (int) $mem_limit;

	if ($unit == 'k')

	{

		$mem_limit = floor($mem_limit / 1024);

	}

	else if ($unit == 'g')

	{

		$mem_limit *= 1024;

	}

	else if (is_numeric($unit))

	{

		$mem_limit = floor((int) ($mem_limit . $unit) / 1048576);

	}

	$mem_limit = max(128, $mem_limit) . 'M';

}

else

{

	$mem_limit = '128M';

}

@ini_set('memory_limit', $mem_limit);

// Include essential scripts

require($phpbb_root_path . 'includes/functions.' . $phpEx);

if (file_exists($phpbb_root_path . 'includes/functions_content.' . $phpEx))

{

	require($phpbb_root_path . 'includes/functions_content.' . $phpEx);

}

include($phpbb_root_path . 'includes/auth.' . $phpEx);

include($phpbb_root_path . 'includes/session.' . $phpEx);

include($phpbb_root_path . 'includes/template.' . $phpEx);

include($phpbb_root_path . 'includes/acm/acm_file.' . $phpEx);

include($phpbb_root_path . 'includes/cache.' . $phpEx);

include($phpbb_root_path . 'includes/functions_admin.' . $phpEx);

include($phpbb_root_path . 'includes/utf/utf_tools.' . $phpEx);

require($phpbb_root_path . 'includes/functions_install.' . $phpEx);

// Try and load an appropriate language if required

$language = basename(request_var('language', ''));

if (!empty($_SERVER['HTTP_ACCEPT_LANGUAGE']) && !$language)

{

	$accept_lang_ary = explode(',', strtolower($_SERVER['HTTP_ACCEPT_LANGUAGE']));

	foreach ($accept_lang_ary as $accept_lang)

	{

		// Set correct format ... guess full xx_yy form

		$accept_lang = substr($accept_lang, 0, 2) . '_' . substr($accept_lang, 3, 2);

		if (file_exists($phpbb_root_path . 'language/' . $accept_lang))

		{

			$language = $accept_lang;

			break;

		}

		else

		{

			// No match on xx_yy so try xx

			$accept_lang = substr($accept_lang, 0, 2);

			if (file_exists($phpbb_root_path . 'language/' . $accept_lang))

			{

				$language = $accept_lang;

				break;

			}

		}

	}

}

// No appropriate language found ... so let's use the first one in the language

// dir, this may or may not be English

if (!$language)

{

	$dir = @opendir($phpbb_root_path . 'language');

	if (!$dir)

	{

		die('Unable to access the language directory');

		exit;

	}

	while (($file = readdir($dir)) !== false)

	{

		$path = $phpbb_root_path . 'language/' . $file;

		if (!is_file($path) && !is_link($path) && file_exists($path . '/iso.txt'))

		{

			$language = $file;

			break;

		}

	}

	closedir($dir);

}

if (!file_exists($phpbb_root_path . 'language/' . $language))

{

	die('No language found!');

}

// And finally, load the relevant language files

include($phpbb_root_path . 'language/' . $language . '/common.' . $phpEx);

include($phpbb_root_path . 'language/' . $language . '/acp/common.' . $phpEx);

include($phpbb_root_path . 'language/' . $language . '/acp/board.' . $phpEx);

include($phpbb_root_path . 'language/' . $language . '/install.' . $phpEx);

include($phpbb_root_path . 'language/' . $language . '/posting.' . $phpEx);

// usually we would need every single constant here - and it would be consistent. For 3.0.x, use a dirty hack... :(

// Define needed constants

define('CHMOD_ALL', 7);

define('CHMOD_READ', 4);

define('CHMOD_WRITE', 2);

define('CHMOD_EXECUTE', 1);

$mode = request_var('mode', 'overview');

$sub = request_var('sub', '');

// Set PHP error handler to ours

set_error_handler(defined('PHPBB_MSG_HANDLER') ? PHPBB_MSG_HANDLER : 'msg_handler');

$user = new user();

$auth = new auth();

$cache = new cache();

$template = new template();

// Add own hook handler, if present. :o

if (file_exists($phpbb_root_path . 'includes/hooks/index.' . $phpEx))

{

	require($phpbb_root_path . 'includes/hooks/index.' . $phpEx);

	$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 . '.' . $phpEx);

	}

}

else

{

	$phpbb_hook = false;

}

// Set some standard variables we want to force

$config = array(

	'load_tplcompile'	=> '1'

);

$template->set_custom_template('../adm/style', 'admin');

$template->assign_var('T_TEMPLATE_PATH', '../adm/style');

// the acp template is never stored in the database

$user->theme['template_storedb'] = false;

$install = new module();

$install->create('install', "index.$phpEx", $mode, $sub);

$install->load();

// Generate the page

$install->page_header();

$install->generate_navigation();

$template->set_filenames(array(

	'body' => $install->get_tpl_name())

);

$install->page_footer();

/**

* @package install

*/

class module

{

	var $id = 0;

	var $type = 'install';

	var $module_ary = array();

	var $filename;

	var $module_url = '';

	var $tpl_name = '';

	var $mode;

	var $sub;

	/**

	* Private methods, should not be overwritten

	*/

	function create($module_type, $module_url, $selected_mod = false, $selected_submod = false)

	{

		global $db, $config, $phpEx, $phpbb_root_path;

		$module = array();

		// Grab module information using Bart's "neat-o-module" system (tm)

		$dir = @opendir('.');

		if (!$dir)

		{

			$this->error('Unable to access the installation directory', __LINE__, __FILE__);

		}

		$setmodules = 1;

		while (($file = readdir($dir)) !== false)

		{

			if (preg_match('#^install_(.*?)\.' . $phpEx . '$#', $file))

			{

				include($file);

			}

		}

		closedir($dir);

		unset($setmodules);

		if (!sizeof($module))

		{

			$this->error('No installation modules found', __LINE__, __FILE__);

		}

		// Order to use and count further if modules get assigned to the same position or not having an order

		$max_module_order = 1000;

		foreach ($module as $row)

		{

			// Module order not specified or module already assigned at this position?

			if (!isset($row['module_order']) || isset($this->module_ary[$row['module_order']]))

			{

				$row['module_order'] = $max_module_order;

				$max_module_order++;

			}

			$this->module_ary[$row['module_order']]['name'] = $row['module_title'];

			$this->module_ary[$row['module_order']]['filename'] = $row['module_filename'];

			$this->module_ary[$row['module_order']]['subs'] = $row['module_subs'];

			$this->module_ary[$row['module_order']]['stages'] = $row['module_stages'];

			if (strtolower($selected_mod) == strtolower($row['module_title']))

			{

				$this->id = (int) $row['module_order'];

				$this->filename = (string) $row['module_filename'];

				$this->module_url = (string) $module_url;

				$this->mode = (string) $selected_mod;

				// Check that the sub-mode specified is valid or set a default if not

				if (is_array($row['module_subs']))

				{

					$this->sub = strtolower((in_array(strtoupper($selected_submod), $row['module_subs'])) ? $selected_submod : $row['module_subs'][0]);

				}

				else if (is_array($row['module_stages']))

				{

					$this->sub = strtolower((in_array(strtoupper($selected_submod), $row['module_stages'])) ? $selected_submod : $row['module_stages'][0]);

				}

				else

				{

					$this->sub = '';

				}

			}

		} // END foreach

	} // END create

	/**

	* Load and run the relevant module if applicable

	*/

	function load($mode = false, $run = true)

	{

		global $phpbb_root_path, $phpEx;

		if ($run)

		{

			if (!empty($mode))

			{

				$this->mode = $mode;

			}

			$module = $this->filename;

			if (!class_exists($module))

			{

				$this->error('Module "' . htmlspecialchars($module) . '" not accessible.', __LINE__, __FILE__);

			}

			$this->module = new $module($this);

			if (method_exists($this->module, 'main'))

			{

				$this->module->main($this->mode, $this->sub);

			}

		}

	}

	/**

	* Output the standard page header

	*/

	function page_header()

	{

		if (defined('HEADER_INC'))

		{

			return;

		}

		define('HEADER_INC', true);

		global $template, $lang, $stage, $phpbb_root_path;

		$template->assign_vars(array(

			'L_CHANGE'				=> $lang['CHANGE'],

			'L_INSTALL_PANEL'		=> $lang['INSTALL_PANEL'],

			'L_SELECT_LANG'			=> $lang['SELECT_LANG'],

			'L_SKIP'				=> $lang['SKIP'],

			'PAGE_TITLE'			=> $this->get_page_title(),

			'T_IMAGE_PATH'			=> $phpbb_root_path . 'adm/images/',

			'S_CONTENT_DIRECTION' 	=> $lang['DIRECTION'],

			'S_CONTENT_FLOW_BEGIN'	=> ($lang['DIRECTION'] == 'ltr') ? 'left' : 'right',

			'S_CONTENT_FLOW_END'	=> ($lang['DIRECTION'] == 'ltr') ? 'right' : 'left',

			'S_CONTENT_ENCODING' 	=> 'UTF-8',

			'S_USER_LANG'			=> $lang['USER_LANG'],

			)

		);

		header('Content-type: text/html; charset=UTF-8');

		header('Cache-Control: private, no-cache="set-cookie"');

		header('Expires: 0');

		header('Pragma: no-cache');

		return;

	}

	/**

	* Output the standard page footer

	*/

	function page_footer()

	{

		global $db, $template;

		$template->display('body');

		// Close our DB connection.

		if (!empty($db) && is_object($db))

		{

			$db->sql_close();

		}

		if (function_exists('exit_handler'))

		{

			exit_handler();

		}

	}

	/**

	* Returns desired template name

	*/

	function get_tpl_name()

	{

		return $this->module->tpl_name . '.html';

	}

	/**

	* Returns the desired page title

	*/

	function get_page_title()

	{

		global $lang;

		if (!isset($this->module->page_title))

		{

			return '';

		}

		return (isset($lang[$this->module->page_title])) ? $lang[$this->module->page_title] : $this->module->page_title;

	}

	/**

	* Generate an HTTP/1.1 header to redirect the user to another page

	* This is used during the installation when we do not have a database available to call the normal redirect function

	* @param string $page The page to redirect to relative to the installer root path

	*/

	function redirect($page)

	{

		// HTTP_HOST is having the correct browser url in most cases...

		$server_name = (!empty($_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 backslashes and doubled slashes (could happen on some proxy setups)

		$script_name = str_replace(array('\\', '//'), '/', $script_name);

		$script_path = trim(dirname($script_name));

		$url = (($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 . '/' . $page;

		header('Location: ' . $url);

		exit;

	}

	/**

	* Generate the navigation tabs

	*/

	function generate_navigation()

	{

		global $lang, $template, $phpEx, $language;

		if (is_array($this->module_ary))

		{

			@ksort($this->module_ary);

			foreach ($this->module_ary as $cat_ary)

			{

				$cat = $cat_ary['name'];

				$l_cat = (!empty($lang['CAT_' . $cat])) ? $lang['CAT_' . $cat] : preg_replace('#_#', ' ', $cat);

				$cat = strtolower($cat);

				$url = $this->module_url . "?mode=$cat&language=$language";

				if ($this->mode == $cat)

				{

					$template->assign_block_vars('t_block1', array(

						'L_TITLE'		=> $l_cat,

						'S_SELECTED'	=> true,

						'U_TITLE'		=> $url,

					));

					if (is_array($this->module_ary[$this->id]['subs']))

					{

						$subs = $this->module_ary[$this->id]['subs'];

						foreach ($subs as $option)

						{

							$l_option = (!empty($lang['SUB_' . $option])) ? $lang['SUB_' . $option] : preg_replace('#_#', ' ', $option);

							$option = strtolower($option);

							$url = $this->module_url . '?mode=' . $this->mode . "&sub=$option&language=$language";

							$template->assign_block_vars('l_block1', array(

								'L_TITLE'		=> $l_option,

								'S_SELECTED'	=> ($this->sub == $option),

								'U_TITLE'		=> $url,

							));

						}

					}

					if (is_array($this->module_ary[$this->id]['stages']))

					{

						$subs = $this->module_ary[$this->id]['stages'];

						$matched = false;

						foreach ($subs as $option)

						{

							$l_option = (!empty($lang['STAGE_' . $option])) ? $lang['STAGE_' . $option] : preg_replace('#_#', ' ', $option);

							$option = strtolower($option);

							$matched = ($this->sub == $option) ? true : $matched;

							$template->assign_block_vars('l_block2', array(

								'L_TITLE'		=> $l_option,

								'S_SELECTED'	=> ($this->sub == $option),

								'S_COMPLETE'	=> !$matched,

							));

						}

					}

				}

				else

				{

					$template->assign_block_vars('t_block1', array(

						'L_TITLE'		=> $l_cat,

						'S_SELECTED'	=> false,

						'U_TITLE'		=> $url,

					));

				}

			}

		}

	}

	/**

	* Output an error message

	* If skip is true, return and continue execution, else exit

	*/

	function error($error, $line, $file, $skip = false)

	{

		global $lang, $db, $template;

		if ($skip)

		{

			$template->assign_block_vars('checks', array(

				'S_LEGEND'	=> true,

				'LEGEND'	=> $lang['INST_ERR'],

			));

			$template->assign_block_vars('checks', array(

				'TITLE'		=> basename($file) . ' [ ' . $line . ' ]',

				'RESULT'	=> '' . $error . '',

			));

			return;

		}

		echo '';

		echo '<html xmlns="http://www.w3.org/1999/xhtml" dir="ltr">';

		echo '<head>';

		echo '<meta http-equiv="content-type" content="text/html; charset=utf-8" />';

		echo '<title>' . $lang['INST_ERR_FATAL'] . '</title>';

		echo '<link href="../adm/style/admin.css" rel="stylesheet" type="text/css" media="screen" />';

		echo '</head>';

		echo '<body id="errorpage">';

		echo '
';

		echo '	
';

		echo '	';

		echo '	
';

		echo '		
';

		echo '		
';

		echo '			';

		echo '			
';

		echo '				
' . $lang['INST_ERR_FATAL'] . '
';

		echo '		
' . $lang['INST_ERR_FATAL'] . "
\n";

		echo '		
' . basename($file) . ' [ ' . $line . " ]
\n";

		echo '		
' . $error . "
\n";

		echo '			';

		echo '			';

		echo '		';

		echo '		';

		echo '	';

		echo '	
';

		echo '		Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group';

		echo '	';

		echo '';

		echo '</body>';

		echo '</html>';

		if (!empty($db) && is_object($db))

		{

			$db->sql_close();

		}

		exit_handler();

	}

	/**

	* Output an error message for a database related problem

	* If skip is true, return and continue execution, else exit

	*/

	function db_error($error, $sql, $line, $file, $skip = false)

	{

		global $lang, $db, $template;

		if ($skip)

		{

			$template->assign_block_vars('checks', array(

				'S_LEGEND'	=> true,

				'LEGEND'	=> $lang['INST_ERR_FATAL'],

			));

			$template->assign_block_vars('checks', array(

				'TITLE'		=> basename($file) . ' [ ' . $line . ' ]',

				'RESULT'	=> '' . $error . '
» SQL:' . $sql,

			));

			return;

		}

		$template->set_filenames(array(

			'body' => 'install_error.html')

		);

		$this->page_header();

		$this->generate_navigation();

		$template->assign_vars(array(

			'MESSAGE_TITLE'		=> $lang['INST_ERR_FATAL_DB'],

			'MESSAGE_TEXT'		=> '
' . basename($file) . ' [ ' . $line . ' ]
SQL : ' . $sql . '
' . $error . '
',

		));

		// Rollback if in transaction

		if ($db->transaction)

		{

			$db->sql_transaction('rollback');

		}

		$this->page_footer();

	}

	/**

	* Generate the relevant HTML for an input field and the associated label and explanatory text

	*/

	function input_field($name, $type, $value='', $options='')

	{

		global $lang;

		$tpl_type = explode(':', $type);

		$tpl = '';