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    Current File : /home/m/e/h/meharicl/www/phpBB3/includes/functions_acp.php

    <?php
    /**
    *
    * This file is part of the phpBB Forum Software package.
    *
    * @copyright (c) phpBB Limited <https://www.phpbb.com>
    * @license GNU General Public License, version 2 (GPL-2.0)
    *
    * For full copyright and license information, please see
    * the docs/CREDITS.txt file.
    *
    */
    
    /**
    * @ignore
    */
    if (!defined('IN_PHPBB'))
    {
    	exit;
    }
    
    /**
    * Header for acp pages
    */
    function adm_page_header($page_title)
    {
    	global $config, $user, $template;
    	global $phpbb_root_path, $phpbb_admin_path, $phpEx, $SID, $_SID;
    	global $phpbb_dispatcher, $phpbb_container;
    
    	if (defined('HEADER_INC'))
    	{
    		return;
    	}
    
    	define('HEADER_INC', true);
    
    	// A listener can set this variable to `true` when it overrides this function
    	$adm_page_header_override = false;
    
    	/**
    	* Execute code and/or overwrite adm_page_header()
    	*
    	* @event core.adm_page_header
    	* @var	string	page_title			Page title
    	* @var	bool	adm_page_header_override	Shall we return instead of
    	*									running the rest of adm_page_header()
    	* @since 3.1.0-a1
    	*/
    	$vars = array('page_title', 'adm_page_header_override');
    	extract($phpbb_dispatcher->trigger_event('core.adm_page_header', compact($vars)));
    
    	if ($adm_page_header_override)
    	{
    		return;
    	}
    
    	$user->update_session_infos();
    
    	// gzip_compression
    	if ($config['gzip_compress'])
    	{
    		if (@extension_loaded('zlib') && !headers_sent())
    		{
    			ob_start('ob_gzhandler');
    		}
    	}
    
    	$template->assign_vars(array(
    		'PAGE_TITLE'			=> $page_title,
    		'USERNAME'				=> $user->data['username'],
    
    		'SID'					=> $SID,
    		'_SID'					=> $_SID,
    		'SESSION_ID'			=> $user->session_id,
    		'ROOT_PATH'				=> $phpbb_root_path,
    		'ADMIN_ROOT_PATH'		=> $phpbb_admin_path,
    
    		'U_LOGOUT'				=> append_sid("{$phpbb_root_path}ucp.$phpEx", 'mode=logout'),
    		'U_ADM_LOGOUT'			=> append_sid("{$phpbb_admin_path}index.$phpEx", 'action=admlogout'),
    		'U_ADM_INDEX'			=> append_sid("{$phpbb_admin_path}index.$phpEx"),
    		'U_INDEX'				=> append_sid("{$phpbb_root_path}index.$phpEx"),
    
    		'T_IMAGES_PATH'			=> "{$phpbb_root_path}images/",
    		'T_SMILIES_PATH'		=> "{$phpbb_root_path}{$config['smilies_path']}/",
    		'T_AVATAR_PATH'			=> "{$phpbb_root_path}{$config['avatar_path']}/",
    		'T_AVATAR_GALLERY_PATH'	=> "{$phpbb_root_path}{$config['avatar_gallery_path']}/",
    		'T_ICONS_PATH'			=> "{$phpbb_root_path}{$config['icons_path']}/",
    		'T_RANKS_PATH'			=> "{$phpbb_root_path}{$config['ranks_path']}/",
    		'T_UPLOAD_PATH'			=> "{$phpbb_root_path}{$config['upload_path']}/",
    
    		'T_FONT_AWESOME_LINK'	=> !empty($config['allow_cdn']) && !empty($config['load_font_awesome_url']) ? $config['load_font_awesome_url'] : "{$phpbb_root_path}assets/css/font-awesome.min.css?assets_version=" . $config['assets_version'],
    
    		'T_ASSETS_VERSION'		=> $config['assets_version'],
    
    		'ICON_MOVE_UP'				=> '<img src="' . htmlspecialchars($phpbb_admin_path) . 'images/icon_up.gif" alt="' . $user->lang['MOVE_UP'] . '" title="' . $user->lang['MOVE_UP'] . '" />',
    		'ICON_MOVE_UP_DISABLED'		=> '<img src="' . htmlspecialchars($phpbb_admin_path) . 'images/icon_up_disabled.gif" alt="' . $user->lang['MOVE_UP'] . '" title="' . $user->lang['MOVE_UP'] . '" />',
    		'ICON_MOVE_DOWN'			=> '<img src="' . htmlspecialchars($phpbb_admin_path) . 'images/icon_down.gif" alt="' . $user->lang['MOVE_DOWN'] . '" title="' . $user->lang['MOVE_DOWN'] . '" />',
    		'ICON_MOVE_DOWN_DISABLED'	=> '<img src="' . htmlspecialchars($phpbb_admin_path) . 'images/icon_down_disabled.gif" alt="' . $user->lang['MOVE_DOWN'] . '" title="' . $user->lang['MOVE_DOWN'] . '" />',
    		'ICON_EDIT'					=> '<img src="' . htmlspecialchars($phpbb_admin_path) . 'images/icon_edit.gif" alt="' . $user->lang['EDIT'] . '" title="' . $user->lang['EDIT'] . '" />',
    		'ICON_EDIT_DISABLED'		=> '<img src="' . htmlspecialchars($phpbb_admin_path) . 'images/icon_edit_disabled.gif" alt="' . $user->lang['EDIT'] . '" title="' . $user->lang['EDIT'] . '" />',
    		'ICON_DELETE'				=> '<img src="' . htmlspecialchars($phpbb_admin_path) . 'images/icon_delete.gif" alt="' . $user->lang['DELETE'] . '" title="' . $user->lang['DELETE'] . '" />',
    		'ICON_DELETE_DISABLED'		=> '<img src="' . htmlspecialchars($phpbb_admin_path) . 'images/icon_delete_disabled.gif" alt="' . $user->lang['DELETE'] . '" title="' . $user->lang['DELETE'] . '" />',
    		'ICON_SYNC'					=> '<img src="' . htmlspecialchars($phpbb_admin_path) . 'images/icon_sync.gif" alt="' . $user->lang['RESYNC'] . '" title="' . $user->lang['RESYNC'] . '" />',
    		'ICON_SYNC_DISABLED'		=> '<img src="' . htmlspecialchars($phpbb_admin_path) . 'images/icon_sync_disabled.gif" alt="' . $user->lang['RESYNC'] . '" title="' . $user->lang['RESYNC'] . '" />',
    
    		'S_USER_LANG'			=> $user->lang['USER_LANG'],
    		'S_CONTENT_DIRECTION'	=> $user->lang['DIRECTION'],
    		'S_CONTENT_ENCODING'	=> 'UTF-8',
    		'S_CONTENT_FLOW_BEGIN'	=> ($user->lang['DIRECTION'] == 'ltr') ? 'left' : 'right',
    		'S_CONTENT_FLOW_END'	=> ($user->lang['DIRECTION'] == 'ltr') ? 'right' : 'left',
    
    		'CONTAINER_EXCEPTION'	=> $phpbb_container->hasParameter('container_exception') ? $phpbb_container->getParameter('container_exception') : false,
    	));
    
    	// An array of http headers that phpBB will set. The following event may override these.
    	$http_headers = array(
    		// application/xhtml+xml not used because of IE
    		'Content-type' => 'text/html; charset=UTF-8',
    		'Cache-Control' => 'private, no-cache="set-cookie"',
    		'Expires' => gmdate('D, d M Y H:i:s', time()) . ' GMT',
    		'Referrer-Policy' => 'strict-origin-when-cross-origin',
    	);
    
    	/**
    	* Execute code and/or overwrite _common_ template variables after they have been assigned.
    	*
    	* @event core.adm_page_header_after
    	* @var	string	page_title			Page title
    	* @var	array	http_headers			HTTP headers that should be set by phpbb
    	*
    	* @since 3.1.0-RC3
    	*/
    	$vars = array('page_title', 'http_headers');
    	extract($phpbb_dispatcher->trigger_event('core.adm_page_header_after', compact($vars)));
    
    	foreach ($http_headers as $hname => $hval)
    	{
    		header((string) $hname . ': ' . (string) $hval);
    	}
    
    	return;
    }
    
    /**
    * Page footer for acp pages
    */
    function adm_page_footer($copyright_html = true)
    {
    	global $db, $config, $template, $user, $auth;
    	global $phpbb_root_path;
    	global $request, $phpbb_dispatcher;
    
    	// A listener can set this variable to `true` when it overrides this function
    	$adm_page_footer_override = false;
    
    	/**
    	* Execute code and/or overwrite adm_page_footer()
    	*
    	* @event core.adm_page_footer
    	* @var	bool	copyright_html			Shall we display the copyright?
    	* @var	bool	adm_page_footer_override	Shall we return instead of
    	*									running the rest of adm_page_footer()
    	* @since 3.1.0-a1
    	*/
    	$vars = array('copyright_html', 'adm_page_footer_override');
    	extract($phpbb_dispatcher->trigger_event('core.adm_page_footer', compact($vars)));
    
    	if ($adm_page_footer_override)
    	{
    		return;
    	}
    
    	phpbb_check_and_display_sql_report($request, $auth, $db);
    
    	$template->assign_vars(array(
    		'DEBUG_OUTPUT'		=> phpbb_generate_debug_output($db, $config, $auth, $user, $phpbb_dispatcher),
    		'TRANSLATION_INFO'	=> (!empty($user->lang['TRANSLATION_INFO'])) ? $user->lang['TRANSLATION_INFO'] : '',
    		'S_COPYRIGHT_HTML'	=> $copyright_html,
    		'CREDIT_LINE'		=> $user->lang('POWERED_BY', '<a href="https://www.phpbb.com/">phpBB</a>&reg; Forum Software &copy; phpBB Limited'),
    		'T_JQUERY_LINK'		=> !empty($config['allow_cdn']) && !empty($config['load_jquery_url']) ? $config['load_jquery_url'] : "{$phpbb_root_path}assets/javascript/jquery-3.5.1.min.js",
    		'S_ALLOW_CDN'		=> !empty($config['allow_cdn']),
    		'VERSION'			=> $config['version'])
    	);
    
    	$template->display('body');
    
    	garbage_collection();
    	exit_handler();
    }
    
    /**
    * Generate back link for acp pages
    */
    function adm_back_link($u_action)
    {
    	global $user;
    	return '<br /><br /><a href="' . $u_action . '">&laquo; ' . $user->lang['BACK_TO_PREV'] . '</a>';
    }
    
    /**
    * Build select field options in acp pages
    */
    function build_select($option_ary, $option_default = false)
    {
    	global $user;
    
    	$html = '';
    	foreach ($option_ary as $value => $title)
    	{
    		$selected = ($option_default !== false && $value == $option_default) ? ' selected="selected"' : '';
    		$html .= '<option value="' . $value . '"' . $selected . '>' . $user->lang[$title] . '</option>';
    	}
    
    	return $html;
    }
    
    /**
    * Build radio fields in acp pages
    */
    function h_radio($name, $input_ary, $input_default = false, $id = false, $key = false, $separator = '')
    {
    	global $user;
    
    	$html = '';
    	$id_assigned = false;
    	foreach ($input_ary as $value => $title)
    	{
    		$selected = ($input_default !== false && $value == $input_default) ? ' checked="checked"' : '';
    		$html .= '<label><input type="radio" name="' . $name . '"' . (($id && !$id_assigned) ? ' id="' . $id . '"' : '') . ' value="' . $value . '"' . $selected . (($key) ? ' accesskey="' . $key . '"' : '') . ' class="radio" /> ' . $user->lang[$title] . '</label>' . $separator;
    		$id_assigned = true;
    	}
    
    	return $html;
    }
    
    /**
    * Build configuration template for acp configuration pages
    */
    function build_cfg_template($tpl_type, $key, &$new_ary, $config_key, $vars)
    {
    	global $user, $module, $phpbb_dispatcher;
    
    	$tpl = '';
    	$name = 'config[' . $config_key . ']';
    
    	// Make sure there is no notice printed out for non-existent config options (we simply set them)
    	if (!isset($new_ary[$config_key]))
    	{
    		$new_ary[$config_key] = '';
    	}
    
    	switch ($tpl_type[0])
    	{
    		case 'password':
    			if ($new_ary[$config_key] !== '')
    			{
    				// replace passwords with asterixes
    				$new_ary[$config_key] = '********';
    			}
    		case 'text':
    		case 'url':
    		case 'email':
    		case 'tel':
    		case 'search':
    			// maxlength and size are only valid for these types and will be
    			// ignored for other input types.
    			$size = (int) $tpl_type[1];
    			$maxlength = (int) $tpl_type[2];
    
    			$tpl = '<input id="' . $key . '" type="' . $tpl_type[0] . '"' . (($size) ? ' size="' . $size . '"' : '') . ' maxlength="' . (($maxlength) ? $maxlength : 255) . '" name="' . $name . '" value="' . $new_ary[$config_key] . '"' . (($tpl_type[0] === 'password') ?  ' autocomplete="off"' : '') . ' />';
    		break;
    
    		case 'color':
    		case 'datetime':
    		case 'datetime-local':
    		case 'month':
    		case 'week':
    			$tpl = '<input id="' . $key . '" type="' . $tpl_type[0] . '" name="' . $name . '" value="' . $new_ary[$config_key] . '" />';
    		break;
    
    		case 'date':
    		case 'time':
    		case 'number':
    		case 'range':
    			$min = isset($tpl_type[1]) ? (int) $tpl_type[1] : false;
    			$max = isset($tpl_type[2]) ? (int) $tpl_type[2] : false;
    
    			$tpl = '<input id="' . $key . '" type="' . $tpl_type[0] . '"' . (( $min !== false ) ? ' min="' . $min . '"' : '') . (( $max !== false ) ? ' max="' . $max . '"' : '') . ' name="' . $name . '" value="' . $new_ary[$config_key] . '" />';
    		break;
    
    		case 'dimension':
    			$min = isset($tpl_type[1]) ? (int) $tpl_type[1] : false;
    			$max = isset($tpl_type[2]) ? (int) $tpl_type[2] : false;
    
    			$tpl = '<input id="' . $key . '" type="number"' . (( $min !== false ) ? ' min="' . $min . '"' : '') . (( $max !== false ) ? ' max="' . $max . '"' : '') . ' name="config[' . $config_key . '_width]" value="' . $new_ary[$config_key . '_width'] . '" /> x <input type="number"' . (( $min !== '' ) ? ' min="' . $min . '"' : '') . (( $max != '' ) ? ' max="' . $max . '"' : '') . ' name="config[' . $config_key . '_height]" value="' . $new_ary[$config_key . '_height'] . '" />';
    		break;
    
    		case 'textarea':
    			$rows = (int) $tpl_type[1];
    			$cols = (int) $tpl_type[2];
    
    			$tpl = '<textarea id="' . $key . '" name="' . $name . '" rows="' . $rows . '" cols="' . $cols . '">' . $new_ary[$config_key] . '</textarea>';
    		break;
    
    		case 'radio':
    			$key_yes	= ($new_ary[$config_key]) ? ' checked="checked"' : '';
    			$key_no		= (!$new_ary[$config_key]) ? ' checked="checked"' : '';
    
    			$tpl_type_cond = explode('_', $tpl_type[1]);
    			$type_no = ($tpl_type_cond[0] == 'disabled' || $tpl_type_cond[0] == 'enabled') ? false : true;
    
    			$tpl_no = '<label><input type="radio" name="' . $name . '" value="0"' . $key_no . ' class="radio" /> ' . (($type_no) ? $user->lang['NO'] : $user->lang['DISABLED']) . '</label>';
    			$tpl_yes = '<label><input type="radio" id="' . $key . '" name="' . $name . '" value="1"' . $key_yes . ' class="radio" /> ' . (($type_no) ? $user->lang['YES'] : $user->lang['ENABLED']) . '</label>';
    
    			$tpl = ($tpl_type_cond[0] == 'yes' || $tpl_type_cond[0] == 'enabled') ? $tpl_yes . $tpl_no : $tpl_no . $tpl_yes;
    		break;
    
    		case 'select':
    		case 'custom':
    
    			if (isset($vars['method']))
    			{
    				$call = array($module->module, $vars['method']);
    			}
    			else if (isset($vars['function']))
    			{
    				$call = $vars['function'];
    			}
    			else
    			{
    				break;
    			}
    
    			if (isset($vars['params']))
    			{
    				$args = array();
    				foreach ($vars['params'] as $value)
    				{
    					switch ($value)
    					{
    						case '{CONFIG_VALUE}':
    							$value = $new_ary[$config_key];
    						break;
    
    						case '{KEY}':
    							$value = $key;
    						break;
    					}
    
    					$args[] = $value;
    				}
    			}
    			else
    			{
    				$args = array($new_ary[$config_key], $key);
    			}
    
    			$return = call_user_func_array($call, $args);
    
    			if ($tpl_type[0] == 'select')
    			{
    				$size = (isset($tpl_type[1])) ? (int) $tpl_type[1] : 1;
    				$data_toggle = (!empty($tpl_type[2])) ? ' data-togglable-settings="true"' : '';
    
    				$tpl = '<select id="' . $key . '" name="' . $name . '"' . (($size > 1) ? ' size="' . $size . '"' : '') . $data_toggle . '>' . $return . '</select>';
    			}
    			else
    			{
    				$tpl = $return;
    			}
    
    		break;
    
    		default:
    		break;
    	}
    
    	if (isset($vars['append']))
    	{
    		$tpl .= $vars['append'];
    	}
    
    	$new = $new_ary;
    	/**
    	* Overwrite the html code we display for the config value
    	*
    	* @event core.build_config_template
    	* @var	array	tpl_type	Config type array:
    	*						0 => data type
    	*						1 [optional] => string: size, int: minimum
    	*						2 [optional] => string: max. length, int: maximum
    	* @var	string	key			Should be used for the id attribute in html
    	* @var	array	new			Array with the config values we display
    	* @var	string	name		Should be used for the name attribute
    	* @var	array	vars		Array with the options for the config
    	* @var	string	tpl			The resulting html code we display
    	* @since 3.1.0-a1
    	*/
    	$vars = array('tpl_type', 'key', 'new', 'name', 'vars', 'tpl');
    	extract($phpbb_dispatcher->trigger_event('core.build_config_template', compact($vars)));
    	$new_ary = $new;
    	unset($new);
    
    	return $tpl;
    }
    
    /**
    * Going through a config array and validate values, writing errors to $error. The validation method  accepts parameters separated by ':' for string and int.
    * The first parameter defines the type to be used, the second the lower bound and the third the upper bound. Only the type is required.
    */
    function validate_config_vars($config_vars, &$cfg_array, &$error)
    {
    	global $phpbb_root_path, $user, $phpbb_dispatcher, $phpbb_filesystem, $language;
    
    	$type	= 0;
    	$min	= 1;
    	$max	= 2;
    
    	foreach ($config_vars as $config_name => $config_definition)
    	{
    		if (!isset($cfg_array[$config_name]) || strpos($config_name, 'legend') !== false)
    		{
    			continue;
    		}
    
    		if (!isset($config_definition['validate']))
    		{
    			continue;
    		}
    
    		$validator = explode(':', $config_definition['validate']);
    
    		// Validate a bit. ;) (0 = type, 1 = min, 2= max)
    		switch ($validator[$type])
    		{
    			case 'url':
    			case 'csv':
    				if ($validator[$type] == 'url')
    				{
    					$cfg_array[$config_name] = trim($cfg_array[$config_name]);
    
    					if (!empty($cfg_array[$config_name]) && !preg_match('#^' . get_preg_expression('url') . '$#iu', $cfg_array[$config_name]))
    					{
    						$error[] = $language->lang('URL_INVALID', $language->lang($config_definition['lang']));
    					}
    				}
    				else if ($validator[$type] == 'csv')
    				{
    					// Validate comma separated values
    					$unfiltered_array = explode(',', $cfg_array[$config_name]);
    					$filtered_array = array_filter($unfiltered_array);
    					if (!empty($filtered_array) && count($unfiltered_array) !== count($filtered_array))
    					{
    						$error[] = $language->lang('CSV_INVALID', $language->lang($config_definition['lang']));
    					}
    
    				}
    			// no break here
    
    			case 'string':
    				$length = utf8_strlen($cfg_array[$config_name]);
    
    				// the column is a VARCHAR
    				$validator[$max] = (isset($validator[$max])) ? min(255, $validator[$max]) : 255;
    
    				if (isset($validator[$min]) && $length < $validator[$min])
    				{
    					$error[] = sprintf($user->lang['SETTING_TOO_SHORT'], $user->lang[$config_definition['lang']], $validator[$min]);
    				}
    				else if (isset($validator[$max]) && $length > $validator[2])
    				{
    					$error[] = sprintf($user->lang['SETTING_TOO_LONG'], $user->lang[$config_definition['lang']], $validator[$max]);
    				}
    			break;
    
    			case 'bool':
    				$cfg_array[$config_name] = ($cfg_array[$config_name]) ? 1 : 0;
    			break;
    
    			case 'int':
    				$cfg_array[$config_name] = (int) $cfg_array[$config_name];
    
    				if (isset($validator[$min]) && $cfg_array[$config_name] < $validator[$min])
    				{
    					$error[] = sprintf($user->lang['SETTING_TOO_LOW'], $user->lang[$config_definition['lang']], $validator[$min]);
    				}
    				else if (isset($validator[$max]) && $cfg_array[$config_name] > $validator[$max])
    				{
    					$error[] = sprintf($user->lang['SETTING_TOO_BIG'], $user->lang[$config_definition['lang']], $validator[$max]);
    				}
    
    				if (strpos($config_name, '_max') !== false)
    				{
    					// Min/max pairs of settings should ensure that min <= max
    					// Replace _max with _min to find the name of the minimum
    					// corresponding configuration variable
    					$min_name = str_replace('_max', '_min', $config_name);
    
    					if (isset($cfg_array[$min_name]) && is_numeric($cfg_array[$min_name]) && $cfg_array[$config_name] < $cfg_array[$min_name])
    					{
    						// A minimum value exists and the maximum value is less than it
    						$error[] = sprintf($user->lang['SETTING_TOO_LOW'], $user->lang[$config_definition['lang']], (int) $cfg_array[$min_name]);
    					}
    				}
    			break;
    
    			case 'email':
    				if (!preg_match('/^' . get_preg_expression('email') . '$/i', $cfg_array[$config_name]))
    				{
    					$error[] = $user->lang['EMAIL_INVALID_EMAIL'];
    				}
    			break;
    
    			// Absolute path
    			case 'script_path':
    				if (!$cfg_array[$config_name])
    				{
    					break;
    				}
    
    				$destination = str_replace('\\', '/', $cfg_array[$config_name]);
    
    				if ($destination !== '/')
    				{
    					// Adjust destination path (no trailing slash)
    					if (substr($destination, -1, 1) == '/')
    					{
    						$destination = substr($destination, 0, -1);
    					}
    
    					$destination = str_replace(array('../', './'), '', $destination);
    
    					if ($destination[0] != '/')
    					{
    						$destination = '/' . $destination;
    					}
    				}
    
    				$cfg_array[$config_name] = trim($destination);
    
    			break;
    
    			// Absolute path
    			case 'lang':
    				if (!$cfg_array[$config_name])
    				{
    					break;
    				}
    
    				$cfg_array[$config_name] = basename($cfg_array[$config_name]);
    
    				if (!file_exists($phpbb_root_path . 'language/' . $cfg_array[$config_name] . '/'))
    				{
    					$error[] = $user->lang['WRONG_DATA_LANG'];
    				}
    			break;
    
    			// Relative path (appended $phpbb_root_path)
    			case 'rpath':
    			case 'rwpath':
    				if (!$cfg_array[$config_name])
    				{
    					break;
    				}
    
    				$destination = $cfg_array[$config_name];
    
    				// Adjust destination path (no trailing slash)
    				if (substr($destination, -1, 1) == '/' || substr($destination, -1, 1) == '\\')
    				{
    					$destination = substr($destination, 0, -1);
    				}
    
    				$destination = str_replace(array('../', '..\\', './', '.\\'), '', $destination);
    				if ($destination && ($destination[0] == '/' || $destination[0] == "\\"))
    				{
    					$destination = '';
    				}
    
    				$cfg_array[$config_name] = trim($destination);
    
    			// Path being relative (still prefixed by phpbb_root_path), but with the ability to escape the root dir...
    			case 'path':
    			case 'wpath':
    
    				if (!$cfg_array[$config_name])
    				{
    					break;
    				}
    
    				$cfg_array[$config_name] = trim($cfg_array[$config_name]);
    
    				// Make sure no NUL byte is present...
    				if (strpos($cfg_array[$config_name], "\0") !== false || strpos($cfg_array[$config_name], '%00') !== false)
    				{
    					$cfg_array[$config_name] = '';
    					break;
    				}
    
    				$path = $phpbb_root_path . $cfg_array[$config_name];
    
    				if (!file_exists($path))
    				{
    					$error[] = sprintf($user->lang['DIRECTORY_DOES_NOT_EXIST'], $cfg_array[$config_name]);
    				}
    
    				if (file_exists($path) && !is_dir($path))
    				{
    					$error[] = sprintf($user->lang['DIRECTORY_NOT_DIR'], $cfg_array[$config_name]);
    				}
    
    				// Check if the path is writable
    				if ($config_definition['validate'] == 'wpath' || $config_definition['validate'] == 'rwpath')
    				{
    					if (file_exists($path) && !$phpbb_filesystem->is_writable($path))
    					{
    						$error[] = sprintf($user->lang['DIRECTORY_NOT_WRITABLE'], $cfg_array[$config_name]);
    					}
    				}
    
    			break;
    
    			default:
    				/**
    				* Validate a config value
    				*
    				* @event core.validate_config_variable
    				* @var	array	cfg_array	Array with config values
    				* @var	string	config_name	Name of the config we validate
    				* @var	array	config_definition	Array with the options for
    				*									this config
    				* @var	array	error		Array of errors, the errors should
    				*							be strings only, language keys are
    				*							not replaced afterwards
    				* @since 3.1.0-a1
    				*/
    				$vars = array('cfg_array', 'config_name', 'config_definition', 'error');
    				extract($phpbb_dispatcher->trigger_event('core.validate_config_variable', compact($vars)));
    			break;
    		}
    	}
    
    	return;
    }
    
    /**
    * Checks whatever or not a variable is OK for use in the Database
    * param mixed $value_ary An array of the form array(array('lang' => ..., 'value' => ..., 'column_type' =>))'
    * param mixed $error The error array
    */
    function validate_range($value_ary, &$error)
    {
    	global $user;
    
    	$column_types = array(
    		'BOOL'	=> array('php_type' => 'int', 		'min' => 0, 				'max' => 1),
    		'USINT'	=> array('php_type' => 'int',		'min' => 0, 				'max' => 65535),
    		'UINT'	=> array('php_type' => 'int', 		'min' => 0, 				'max' => (int) 0x7fffffff),
    		// Do not use (int) 0x80000000 - it evaluates to different
    		// values on 32-bit and 64-bit systems.
    		// Apparently -2147483648 is a float on 32-bit systems,
    		// despite fitting in an int, thus explicit cast is needed.
    		'INT'	=> array('php_type' => 'int', 		'min' => (int) -2147483648,	'max' => (int) 0x7fffffff),
    		'TINT'	=> array('php_type' => 'int',		'min' => -128,				'max' => 127),
    
    		'VCHAR'	=> array('php_type' => 'string', 	'min' => 0, 				'max' => 255),
    	);
    	foreach ($value_ary as $value)
    	{
    		$column = explode(':', $value['column_type']);
    		if (!isset($column_types[$column[0]]))
    		{
    			continue;
    		}
    		else
    		{
    			$type = $column_types[$column[0]];
    		}
    
    		switch ($type['php_type'])
    		{
    			case 'string' :
    				$max = (isset($column[1])) ? min($column[1],$type['max']) : $type['max'];
    				if (utf8_strlen($value['value']) > $max)
    				{
    					$error[] = sprintf($user->lang['SETTING_TOO_LONG'], $user->lang[$value['lang']], $max);
    				}
    			break;
    
    			case 'int':
    				$min = (isset($column[1])) ? max($column[1],$type['min']) : $type['min'];
    				$max = (isset($column[2])) ? min($column[2],$type['max']) : $type['max'];
    				if ($value['value'] < $min)
    				{
    					$error[] = sprintf($user->lang['SETTING_TOO_LOW'], $user->lang[$value['lang']], $min);
    				}
    				else if ($value['value'] > $max)
    				{
    					$error[] = sprintf($user->lang['SETTING_TOO_BIG'], $user->lang[$value['lang']], $max);
    				}
    			break;
    		}
    	}
    }
    
    /**
    * Inserts new config display_vars into an exisiting display_vars array
    * at the given position.
    *
    * @param array $display_vars An array of existing config display vars
    * @param array $add_config_vars An array of new config display vars
    * @param array $where Where to place the new config vars,
    *              before or after an exisiting config, as an array
    *              of the form: array('after' => 'config_name') or
    *              array('before' => 'config_name').
    * @return array The array of config display vars
    */
    function phpbb_insert_config_array($display_vars, $add_config_vars, $where)
    {
    	if (is_array($where) && array_key_exists(current($where), $display_vars))
    	{
    		$position = array_search(current($where), array_keys($display_vars)) + ((key($where) == 'before') ? 0 : 1);
    		$display_vars = array_merge(
    			array_slice($display_vars, 0, $position),
    			$add_config_vars,
    			array_slice($display_vars, $position)
    		);
    	}
    
    	return $display_vars;
    }