ReIMG Image Resizer

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Jaymo_sx
Registered User
Posts: 12
Joined: Wed Apr 14, 2010 12:46 pm

Re: ReIMG Image Resizer

Post by Jaymo_sx » Wed Apr 14, 2010 4:11 pm

Code: Select all

<?php
/**
*
* @package phpBB3
* @version $Id: functions.php 10172 2009-09-20 18:50:35Z acydburn $
* @copyright (c) 2005 phpBB Group
* @license http://opensource.org/licenses/gpl-license.php GNU Public License
*
*/

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

// Common global functions

/**
* set_var
*
* Set variable, used by {@link request_var the request_var function}
*
* @access private
*/
function set_var(&$result, $var, $type, $multibyte = false)
{
	settype($var, $type);
	$result = $var;

	if ($type == 'string')
	{
		$result = trim(htmlspecialchars(str_replace(array("\r\n", "\r", "\0"), array("\n", "\n", ''), $result), ENT_COMPAT, 'UTF-8'));

		if (!empty($result))
		{
			// Make sure multibyte characters are wellformed
			if ($multibyte)
			{
				if (!preg_match('/^./u', $result))
				{
					$result = '';
				}
			}
			else
			{
				// no multibyte, allow only ASCII (0-127)
				$result = preg_replace('/[\x80-\xFF]/', '?', $result);
			}
		}

		$result = (STRIP) ? stripslashes($result) : $result;
	}
}

/**
* request_var
*
* Used to get passed variable
*/
function request_var($var_name, $default, $multibyte = false, $cookie = false)
{
	if (!$cookie && isset($_COOKIE[$var_name]))
	{
		if (!isset($_GET[$var_name]) && !isset($_POST[$var_name]))
		{
			return (is_array($default)) ? array() : $default;
		}
		$_REQUEST[$var_name] = isset($_POST[$var_name]) ? $_POST[$var_name] : $_GET[$var_name];
	}

	$super_global = ($cookie) ? '_COOKIE' : '_REQUEST';
	if (!isset($GLOBALS[$super_global][$var_name]) || is_array($GLOBALS[$super_global][$var_name]) != is_array($default))
	{
		return (is_array($default)) ? array() : $default;
	}

	$var = $GLOBALS[$super_global][$var_name];
	if (!is_array($default))
	{
		$type = gettype($default);
	}
	else
	{
		list($key_type, $type) = each($default);
		$type = gettype($type);
		$key_type = gettype($key_type);
		if ($type == 'array')
		{
			reset($default);
			$default = current($default);
			list($sub_key_type, $sub_type) = each($default);
			$sub_type = gettype($sub_type);
			$sub_type = ($sub_type == 'array') ? 'NULL' : $sub_type;
			$sub_key_type = gettype($sub_key_type);
		}
	}

	if (is_array($var))
	{
		$_var = $var;
		$var = array();

		foreach ($_var as $k => $v)
		{
			set_var($k, $k, $key_type);
			if ($type == 'array' && is_array($v))
			{
				foreach ($v as $_k => $_v)
				{
					if (is_array($_v))
					{
						$_v = null;
					}
					set_var($_k, $_k, $sub_key_type);
					set_var($var[$k][$_k], $_v, $sub_type, $multibyte);
				}
			}
			else
			{
				if ($type == 'array' || is_array($v))
				{
					$v = null;
				}
				set_var($var[$k], $v, $type, $multibyte);
			}
		}
	}
	else
	{
		set_var($var, $var, $type, $multibyte);
	}

	return $var;
}

/**
* Set config value. Creates missing config entry.
*/
function set_config($config_name, $config_value, $is_dynamic = false)
{
	global $db, $cache, $config;

	$sql = 'UPDATE ' . CONFIG_TABLE . "
		SET config_value = '" . $db->sql_escape($config_value) . "'
		WHERE config_name = '" . $db->sql_escape($config_name) . "'";
	$db->sql_query($sql);

	if (!$db->sql_affectedrows() && !isset($config[$config_name]))
	{
		$sql = 'INSERT INTO ' . CONFIG_TABLE . ' ' . $db->sql_build_array('INSERT', array(
			'config_name'	=> $config_name,
			'config_value'	=> $config_value,
			'is_dynamic'	=> ($is_dynamic) ? 1 : 0));
		$db->sql_query($sql);
	}

	$config[$config_name] = $config_value;

	if (!$is_dynamic)
	{
		$cache->destroy('config');
	}
}

/**
* Set dynamic config value with arithmetic operation.
*/
function set_config_count($config_name, $increment, $is_dynamic = false)
{
	global $db, $cache;

	switch ($db->sql_layer)
	{
		case 'firebird':
			$sql_update = 'CAST(CAST(config_value as integer) + ' . (int) $increment . ' as VARCHAR(255))';
		break;

		case 'postgres':
			$sql_update = 'int4(config_value) + ' . (int) $increment;
		break;

		// MySQL, SQlite, mssql, mssql_odbc, oracle
		default:
			$sql_update = 'config_value + ' . (int) $increment;
		break;
	}

	$db->sql_query('UPDATE ' . CONFIG_TABLE . ' SET config_value = ' . $sql_update . " WHERE config_name = '" . $db->sql_escape($config_name) . "'");

	if (!$is_dynamic)
	{
		$cache->destroy('config');
	}
}

/**
* Generates an alphanumeric random string of given length
*/
function gen_rand_string($num_chars = 8)
{
	$rand_str = unique_id();
	$rand_str = str_replace('0', 'Z', strtoupper(base_convert($rand_str, 16, 35)));

	return substr($rand_str, 0, $num_chars);
}

/**
* Return unique id
* @param string $extra additional entropy
*/
function unique_id($extra = 'c')
{
	static $dss_seeded = false;
	global $config;

	$val = $config['rand_seed'] . microtime();
	$val = md5($val);
	$config['rand_seed'] = md5($config['rand_seed'] . $val . $extra);

	if ($dss_seeded !== true && ($config['rand_seed_last_update'] < time() - rand(1,10)))
	{
		set_config('rand_seed', $config['rand_seed'], true);
		set_config('rand_seed_last_update', time(), true);
		$dss_seeded = true;
	}

	return substr($val, 4, 16);
}

/**
* Return formatted string for filesizes
*
* @param int	$value			filesize in bytes
* @param bool	$string_only	true if language string should be returned
* @param array	$allowed_units	only allow these units (data array indexes)
*
* @return mixed					data array if $string_only is false
* @author bantu
*/
function get_formatted_filesize($value, $string_only = true, $allowed_units = false)
{
	global $user;

	$available_units = array(
		'gb' => array(
			'min' 		=> 1073741824, // pow(2, 30)
			'index'		=> 3,
			'si_unit'	=> 'GB',
			'iec_unit'	=> 'GIB',
		),
		'mb' => array(
			'min'		=> 1048576, // pow(2, 20)
			'index'		=> 2,
			'si_unit'	=> 'MB',
			'iec_unit'	=> 'MIB',
		),
		'kb' => array(
			'min'		=> 1024, // pow(2, 10)
			'index'		=> 1,
			'si_unit'	=> 'KB',
			'iec_unit'	=> 'KIB',
		),
		'b' => array(
			'min'		=> 0,
			'index'		=> 0,
			'si_unit'	=> 'BYTES', // Language index
			'iec_unit'	=> 'BYTES',  // Language index
		),
	);

	foreach ($available_units as $si_identifier => $unit_info)
	{
		if (!empty($allowed_units) && $si_identifier != 'b' && !in_array($si_identifier, $allowed_units))
		{
			continue;
		}

		if ($value >= $unit_info['min'])
		{
			$unit_info['si_identifier'] = $si_identifier;

			break;
		}
	}
	unset($available_units);

	for ($i = 0; $i < $unit_info['index']; $i++)
	{
		$value /= 1024;
	}
	$value = round($value, 2);

	// Lookup units in language dictionary
	$unit_info['si_unit'] = (isset($user->lang[$unit_info['si_unit']])) ? $user->lang[$unit_info['si_unit']] : $unit_info['si_unit'];
	$unit_info['iec_unit'] = (isset($user->lang[$unit_info['iec_unit']])) ? $user->lang[$unit_info['iec_unit']] : $unit_info['iec_unit'];

	// Default to IEC
	$unit_info['unit'] = $unit_info['iec_unit'];

	if (!$string_only)
	{
		$unit_info['value'] = $value;

		return $unit_info;
	}

	return $value  . ' ' . $unit_info['unit'];
}

/**
* Determine whether we are approaching the maximum execution time. Should be called once
* at the beginning of the script in which it's used.
* @return	bool	Either true if the maximum execution time is nearly reached, or false
*					if some time is still left.
*/
function still_on_time($extra_time = 15)
{
	static $max_execution_time, $start_time;

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

	if (empty($max_execution_time))
	{
		$max_execution_time = (function_exists('ini_get')) ? (int) @ini_get('max_execution_time') : (int) @get_cfg_var('max_execution_time');

		// If zero, then set to something higher to not let the user catch the ten seconds barrier.
		if ($max_execution_time === 0)
		{
			$max_execution_time = 50 + $extra_time;
		}

		$max_execution_time = min(max(10, ($max_execution_time - $extra_time)), 50);

		// For debugging purposes
		// $max_execution_time = 10;

		global $starttime;
		$start_time = (empty($starttime)) ? $current_time : $starttime;
	}

	return (ceil($current_time - $start_time) < $max_execution_time) ? true : false;
}

/**
*
* @version Version 0.1 / slightly modified for phpBB 3.0.x (using $H$ as hash type identifier)
*
* Portable PHP password hashing framework.
*
* Written by Solar Designer <solar at openwall.com> in 2004-2006 and placed in
* the public domain.
*
* There's absolutely no warranty.
*
* The homepage URL for this framework is:
*
*	http://www.openwall.com/phpass/
*
* Please be sure to update the Version line if you edit this file in any way.
* It is suggested that you leave the main version number intact, but indicate
* your project name (after the slash) and add your own revision information.
*
* Please do not change the "private" password hashing method implemented in
* here, thereby making your hashes incompatible.  However, if you must, please
* change the hash type identifier (the "$P$") to something different.
*
* Obviously, since this code is in the public domain, the above are not
* requirements (there can be none), but merely suggestions.
*
*
* Hash the password
*/
function phpbb_hash($password)
{
	$itoa64 = './0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz';

	$random_state = unique_id();
	$random = '';
	$count = 6;

	if (($fh = @fopen('/dev/urandom', 'rb')))
	{
		$random = fread($fh, $count);
		fclose($fh);
	}

	if (strlen($random) < $count)
	{
		$random = '';

		for ($i = 0; $i < $count; $i += 16)
		{
			$random_state = md5(unique_id() . $random_state);
			$random .= pack('H*', md5($random_state));
		}
		$random = substr($random, 0, $count);
	}

	$hash = _hash_crypt_private($password, _hash_gensalt_private($random, $itoa64), $itoa64);

	if (strlen($hash) == 34)
	{
		return $hash;
	}

	return md5($password);
}

/**
* Check for correct password
*
* @param string $password The password in plain text
* @param string $hash The stored password hash
*
* @return bool Returns true if the password is correct, false if not.
*/
function phpbb_check_hash($password, $hash)
{
	$itoa64 = './0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz';
	if (strlen($hash) == 34)
	{
		return (_hash_crypt_private($password, $hash, $itoa64) === $hash) ? true : false;
	}

	return (md5($password) === $hash) ? true : false;
}

/**
* Generate salt for hash generation
*/
function _hash_gensalt_private($input, &$itoa64, $iteration_count_log2 = 6)
{
	if ($iteration_count_log2 < 4 || $iteration_count_log2 > 31)
	{
		$iteration_count_log2 = 8;
	}

	$output = '$H$';
	$output .= $itoa64[min($iteration_count_log2 + ((PHP_VERSION >= 5) ? 5 : 3), 30)];
	$output .= _hash_encode64($input, 6, $itoa64);

	return $output;
}

/**
* Encode hash
*/
function _hash_encode64($input, $count, &$itoa64)
{
	$output = '';
	$i = 0;

	do
	{
		$value = ord($input[$i++]);
		$output .= $itoa64[$value & 0x3f];

		if ($i < $count)
		{
			$value |= ord($input[$i]) << 8;
		}

		$output .= $itoa64[($value >> 6) & 0x3f];

		if ($i++ >= $count)
		{
			break;
		}

		if ($i < $count)
		{
			$value |= ord($input[$i]) << 16;
		}

		$output .= $itoa64[($value >> 12) & 0x3f];

		if ($i++ >= $count)
		{
			break;
		}

		$output .= $itoa64[($value >> 18) & 0x3f];
	}
	while ($i < $count);

	return $output;
}

/**
* The crypt function/replacement
*/
function _hash_crypt_private($password, $setting, &$itoa64)
{
	$output = '*';

	// Check for correct hash
	if (substr($setting, 0, 3) != '$H$')
	{
		return $output;
	}

	$count_log2 = strpos($itoa64, $setting[3]);

	if ($count_log2 < 7 || $count_log2 > 30)
	{
		return $output;
	}

	$count = 1 << $count_log2;
	$salt = substr($setting, 4, 8);

	if (strlen($salt) != 8)
	{
		return $output;
	}

	/**
	* We're kind of forced to use MD5 here since it's the only
	* cryptographic primitive available in all versions of PHP
	* currently in use.  To implement our own low-level crypto
	* in PHP would result in much worse performance and
	* consequently in lower iteration counts and hashes that are
	* quicker to crack (by non-PHP code).
	*/
	if (PHP_VERSION >= 5)
	{
		$hash = md5($salt . $password, true);
		do
		{
			$hash = md5($hash . $password, true);
		}
		while (--$count);
	}
	else
	{
		$hash = pack('H*', md5($salt . $password));
		do
		{
			$hash = pack('H*', md5($hash . $password));
		}
		while (--$count);
	}

	$output = substr($setting, 0, 12);
	$output .= _hash_encode64($hash, 16, $itoa64);

	return $output;
}

/**
* Hashes an email address to a big integer
*
* @param string $email		Email address
*
* @return string			Big Integer
*/
function phpbb_email_hash($email)
{
	return crc32(strtolower($email)) . strlen($email);
}

/**
* Global function for chmodding directories and files for internal use
*
* This function determines owner and group whom the file belongs to and user and group of PHP and then set safest possible file permissions.
* The function determines owner and group from common.php file and sets the same to the provided file.
* The function uses bit fields to build the permissions.
* The function sets the appropiate execute bit on directories.
*
* Supported constants representing bit fields are:
*
* CHMOD_ALL - all permissions (7)
* CHMOD_READ - read permission (4)
* CHMOD_WRITE - write permission (2)
* CHMOD_EXECUTE - execute permission (1)
*
* NOTE: The function uses POSIX extension and fileowner()/filegroup() functions. If any of them is disabled, this function tries to build proper permissions, by calling is_readable() and is_writable() functions.
*
* @param string	$filename	The file/directory to be chmodded
* @param int	$perms		Permissions to set
*
* @return bool	true on success, otherwise false
* @author faw, phpBB Group
*/
function phpbb_chmod($filename, $perms = CHMOD_READ)
{
	static $_chmod_info;

	// Return if the file no longer exists.
	if (!file_exists($filename))
	{
		return false;
	}

	// Determine some common vars
	if (empty($_chmod_info))
	{
		if (!function_exists('fileowner') || !function_exists('filegroup'))
		{
			// No need to further determine owner/group - it is unknown
			$_chmod_info['process'] = false;
		}
		else
		{
			global $phpbb_root_path, $phpEx;

			// Determine owner/group of common.php file and the filename we want to change here
			$common_php_owner = @fileowner($phpbb_root_path . 'common.' . $phpEx);
			$common_php_group = @filegroup($phpbb_root_path . 'common.' . $phpEx);

			// And the owner and the groups PHP is running under.
			$php_uid = (function_exists('posix_getuid')) ? @posix_getuid() : false;
			$php_gids = (function_exists('posix_getgroups')) ? @posix_getgroups() : false;

			// If we are unable to get owner/group, then do not try to set them by guessing
			if (!$php_uid || empty($php_gids) || !$common_php_owner || !$common_php_group)
			{
				$_chmod_info['process'] = false;
			}
			else
			{
				$_chmod_info = array(
					'process'		=> true,
					'common_owner'	=> $common_php_owner,
					'common_group'	=> $common_php_group,
					'php_uid'		=> $php_uid,
					'php_gids'		=> $php_gids,
				);
			}
		}
	}

	if ($_chmod_info['process'])
	{
		$file_uid = @fileowner($filename);
		$file_gid = @filegroup($filename);

		// Change owner
		if (@chown($filename, $_chmod_info['common_owner']))
		{
			clearstatcache();
			$file_uid = @fileowner($filename);
		}

		// Change group
		if (@chgrp($filename, $_chmod_info['common_group']))
		{
			clearstatcache();
			$file_gid = @filegroup($filename);
		}

		// If the file_uid/gid now match the one from common.php we can process further, else we are not able to change something
		if ($file_uid != $_chmod_info['common_owner'] || $file_gid != $_chmod_info['common_group'])
		{
			$_chmod_info['process'] = false;
		}
	}

	// Still able to process?
	if ($_chmod_info['process'])
	{
		if ($file_uid == $_chmod_info['php_uid'])
		{
			$php = 'owner';
		}
		else if (in_array($file_gid, $_chmod_info['php_gids']))
		{
			$php = 'group';
		}
		else
		{
			// Since we are setting the everyone bit anyway, no need to do expensive operations
			$_chmod_info['process'] = false;
		}
	}

	// We are not able to determine or change something
	if (!$_chmod_info['process'])
	{
		$php = 'other';
	}

	// Owner always has read/write permission
	$owner = CHMOD_READ | CHMOD_WRITE;
	if (is_dir($filename))
	{
		$owner |= CHMOD_EXECUTE;

		// Only add execute bit to the permission if the dir needs to be readable
		if ($perms & CHMOD_READ)
		{
			$perms |= CHMOD_EXECUTE;
		}
	}

	switch ($php)
	{
		case 'owner':
			$result = @chmod($filename, ($owner << 6) + (0 << 3) + (0 << 0));

			clearstatcache();

			if (is_readable($filename) && is_writable($filename))
			{
				break;
			}

		case 'group':
			$result = @chmod($filename, ($owner << 6) + ($perms << 3) + (0 << 0));

			clearstatcache();

			if ((!($perms & CHMOD_READ) || is_readable($filename)) && (!($perms & CHMOD_WRITE) || is_writable($filename)))
			{
				break;
			}

		case 'other':
			$result = @chmod($filename, ($owner << 6) + ($perms << 3) + ($perms << 0));

			clearstatcache();

			if ((!($perms & CHMOD_READ) || is_readable($filename)) && (!($perms & CHMOD_WRITE) || is_writable($filename)))
			{
				break;
			}

		default:
			return false;
		break;
	}

	return $result;
}

/**
* Test if a file/directory is writable
*
* This function calls the native is_writable() when not running under
* Windows and it is not disabled.
*
* @param string $file Path to perform write test on
* @return bool True when the path is writable, otherwise false.
*/
function phpbb_is_writable($file)
{
	if (strtolower(substr(PHP_OS, 0, 3)) === 'win' || !function_exists('is_writable'))
	{
		if (file_exists($file))
		{
			// Canonicalise path to absolute path
			$file = phpbb_realpath($file);

			if (is_dir($file))
			{
				// Test directory by creating a file inside the directory
				$result = @tempnam($file, 'i_w');

				if (is_string($result) && file_exists($result))
				{
					unlink($result);

					// Ensure the file is actually in the directory (returned realpathed)
					return (strpos($result, $file) === 0) ? true : false;
				}
			}
			else
			{
				$handle = @fopen($file, 'r+');

				if (is_resource($handle))
				{
					fclose($handle);
					return true;
				}
			}
		}
		else
		{
			// file does not exist test if we can write to the directory
			$dir = dirname($file);

			if (file_exists($dir) && is_dir($dir) && phpbb_is_writable($dir))
			{
				return true;
			}
		}

		return false;
	}
	else
	{
		return is_writable($file);
	}
}

// Compatibility functions

if (!function_exists('array_combine'))
{
	/**
	* A wrapper for the PHP5 function array_combine()
	* @param array $keys contains keys for the resulting array
	* @param array $values contains values for the resulting array
	*
	* @return Returns an array by using the values from the keys array as keys and the
	* 	values from the values array as the corresponding values. Returns false if the
	* 	number of elements for each array isn't equal or if the arrays are empty.
	*/
	function array_combine($keys, $values)
	{
		$keys = array_values($keys);
		$values = array_values($values);

		$n = sizeof($keys);
		$m = sizeof($values);
		if (!$n || !$m || ($n != $m))
		{
			return false;
		}

		$combined = array();
		for ($i = 0; $i < $n; $i++)
		{
			$combined[$keys[$i]] = $values[$i];
		}
		return $combined;
	}
}

if (!function_exists('str_split'))
{
	/**
	* A wrapper for the PHP5 function str_split()
	* @param array $string contains the string to be converted
	* @param array $split_length contains the length of each chunk
	*
	* @return  Converts a string to an array. If the optional split_length parameter is specified,
	*  	the returned array will be broken down into chunks with each being split_length in length,
	*  	otherwise each chunk will be one character in length. FALSE is returned if split_length is
	*  	less than 1. If the split_length length exceeds the length of string, the entire string is
	*  	returned as the first (and only) array element.
	*/
	function str_split($string, $split_length = 1)
	{
		if ($split_length < 1)
		{
			return false;
		}
		else if ($split_length >= strlen($string))
		{
			return array($string);
		}
		else
		{
			preg_match_all('#.{1,' . $split_length . '}#s', $string, $matches);
			return $matches[0];
		}
	}
}

if (!function_exists('stripos'))
{
	/**
	* A wrapper for the PHP5 function stripos
	* Find position of first occurrence of a case-insensitive string
	*
	* @param string $haystack is the string to search in
	* @param string $needle is the string to search for
	*
	* @return mixed Returns the numeric position of the first occurrence of needle in the haystack string. Unlike strpos(), stripos() is case-insensitive.
	* Note that the needle may be a string of one or more characters.
	* If needle is not found, stripos() will return boolean FALSE.
	*/
	function stripos($haystack, $needle)
	{
		if (preg_match('#' . preg_quote($needle, '#') . '#i', $haystack, $m))
		{
			return strpos($haystack, $m[0]);
		}

		return false;
	}
}

/**
* Checks if a path ($path) is absolute or relative
*
* @param string $path Path to check absoluteness of
* @return boolean
*/
function is_absolute($path)
{
	return ($path[0] == '/' || (DIRECTORY_SEPARATOR == '\\' && preg_match('#^[a-z]:[/\\\]#i', $path))) ? true : false;
}

/**
* @author Chris Smith <chris@project-minerva.org>
* @copyright 2006 Project Minerva Team
* @param string $path The path which we should attempt to resolve.
* @return mixed
*/
function phpbb_own_realpath($path)
{
	// Now to perform funky shizzle

	// Switch to use UNIX slashes
	$path = str_replace(DIRECTORY_SEPARATOR, '/', $path);
	$path_prefix = '';

	// Determine what sort of path we have
	if (is_absolute($path))
	{
		$absolute = true;

		if ($path[0] == '/')
		{
			// Absolute path, *NIX style
			$path_prefix = '';
		}
		else
		{
			// Absolute path, Windows style
			// Remove the drive letter and colon
			$path_prefix = $path[0] . ':';
			$path = substr($path, 2);
		}
	}
	else
	{
		// Relative Path
		// Prepend the current working directory
		if (function_exists('getcwd'))
		{
			// This is the best method, hopefully it is enabled!
			$path = str_replace(DIRECTORY_SEPARATOR, '/', getcwd()) . '/' . $path;
			$absolute = true;
			if (preg_match('#^[a-z]:#i', $path))
			{
				$path_prefix = $path[0] . ':';
				$path = substr($path, 2);
			}
			else
			{
				$path_prefix = '';
			}
		}
		else if (isset($_SERVER['SCRIPT_FILENAME']) && !empty($_SERVER['SCRIPT_FILENAME']))
		{
			// Warning: If chdir() has been used this will lie!
			// Warning: This has some problems sometime (CLI can create them easily)
			$path = str_replace(DIRECTORY_SEPARATOR, '/', dirname($_SERVER['SCRIPT_FILENAME'])) . '/' . $path;
			$absolute = true;
			$path_prefix = '';
		}
		else
		{
			// We have no way of getting the absolute path, just run on using relative ones.
			$absolute = false;
			$path_prefix = '.';
		}
	}

	// Remove any repeated slashes
	$path = preg_replace('#/{2,}#', '/', $path);

	// Remove the slashes from the start and end of the path
	$path = trim($path, '/');

	// Break the string into little bits for us to nibble on
	$bits = explode('/', $path);

	// Remove any . in the path, renumber array for the loop below
	$bits = array_values(array_diff($bits, array('.')));

	// Lets get looping, run over and resolve any .. (up directory)
	for ($i = 0, $max = sizeof($bits); $i < $max; $i++)
	{
		// @todo Optimise
		if ($bits[$i] == '..' )
		{
			if (isset($bits[$i - 1]))
			{
				if ($bits[$i - 1] != '..')
				{
					// We found a .. and we are able to traverse upwards, lets do it!
					unset($bits[$i]);
					unset($bits[$i - 1]);
					$i -= 2;
					$max -= 2;
					$bits = array_values($bits);
				}
			}
			else if ($absolute) // ie. !isset($bits[$i - 1]) && $absolute
			{
				// We have an absolute path trying to descend above the root of the filesystem
				// ... Error!
				return false;
			}
		}
	}

	// Prepend the path prefix
	array_unshift($bits, $path_prefix);

	$resolved = '';

	$max = sizeof($bits) - 1;

	// Check if we are able to resolve symlinks, Windows cannot.
	$symlink_resolve = (function_exists('readlink')) ? true : false;

	foreach ($bits as $i => $bit)
	{
		if (@is_dir("$resolved/$bit") || ($i == $max && @is_file("$resolved/$bit")))
		{
			// Path Exists
			if ($symlink_resolve && is_link("$resolved/$bit") && ($link = readlink("$resolved/$bit")))
			{
				// Resolved a symlink.
				$resolved = $link . (($i == $max) ? '' : '/');
				continue;
			}
		}
		else
		{
			// Something doesn't exist here!
			// This is correct realpath() behaviour but sadly open_basedir and safe_mode make this problematic
			// return false;
		}
		$resolved .= $bit . (($i == $max) ? '' : '/');
	}

	// @todo If the file exists fine and open_basedir only has one path we should be able to prepend it
	// because we must be inside that basedir, the question is where...
	// @internal The slash in is_dir() gets around an open_basedir restriction
	if (!@file_exists($resolved) || (!is_dir($resolved . '/') && !is_file($resolved)))
	{
		return false;
	}

	// Put the slashes back to the native operating systems slashes
	$resolved = str_replace('/', DIRECTORY_SEPARATOR, $resolved);

	// Check for DIRECTORY_SEPARATOR at the end (and remove it!)
	if (substr($resolved, -1) == DIRECTORY_SEPARATOR)
	{
		return substr($resolved, 0, -1);
	}

	return $resolved; // We got here, in the end!
}

if (!function_exists('realpath'))
{
	/**
	* A wrapper for realpath
	* @ignore
	*/
	function phpbb_realpath($path)
	{
		return phpbb_own_realpath($path);
	}
}
else
{
	/**
	* A wrapper for realpath
	*/
	function phpbb_realpath($path)
	{
		$realpath = realpath($path);

		// Strangely there are provider not disabling realpath but returning strange values. :o
		// We at least try to cope with them.
		if ($realpath === $path || $realpath === false)
		{
			return phpbb_own_realpath($path);
		}

		// Check for DIRECTORY_SEPARATOR at the end (and remove it!)
		if (substr($realpath, -1) == DIRECTORY_SEPARATOR)
		{
			$realpath = substr($realpath, 0, -1);
		}

		return $realpath;
	}
}

if (!function_exists('htmlspecialchars_decode'))
{
	/**
	* A wrapper for htmlspecialchars_decode
	* @ignore
	*/
	function htmlspecialchars_decode($string, $quote_style = ENT_COMPAT)
	{
		return strtr($string, array_flip(get_html_translation_table(HTML_SPECIALCHARS, $quote_style)));
	}
}

// functions used for building option fields

/**
* Pick a language, any language ...
*/
function language_select($default = '')
{
	global $db;

	$sql = 'SELECT lang_iso, lang_local_name
		FROM ' . LANG_TABLE . '
		ORDER BY lang_english_name';
	$result = $db->sql_query($sql);

	$lang_options = '';
	while ($row = $db->sql_fetchrow($result))
	{
		$selected = ($row['lang_iso'] == $default) ? ' selected="selected"' : '';
		$lang_options .= '<option value="' . $row['lang_iso'] . '"' . $selected . '>' . $row['lang_local_name'] . '</option>';
	}
	$db->sql_freeresult($result);

	return $lang_options;
}

/**
* Pick a template/theme combo,
*/
function style_select($default = '', $all = false)
{
	global $db;

	$sql_where = (!$all) ? 'WHERE style_active = 1 ' : '';
	$sql = 'SELECT style_id, style_name
		FROM ' . STYLES_TABLE . "
		$sql_where
		ORDER BY style_name";
	$result = $db->sql_query($sql);

	$style_options = '';
	while ($row = $db->sql_fetchrow($result))
	{
		$selected = ($row['style_id'] == $default) ? ' selected="selected"' : '';
		$style_options .= '<option value="' . $row['style_id'] . '"' . $selected . '>' . $row['style_name'] . '</option>';
	}
	$db->sql_freeresult($result);

	return $style_options;
}

/**
* Pick a timezone
*/
function tz_select($default = '', $truncate = false)
{
	global $user;

	$tz_select = '';
	foreach ($user->lang['tz_zones'] as $offset => $zone)
	{
		if ($truncate)
		{
			$zone_trunc = truncate_string($zone, 50, 255, false, '...');
		}
		else
		{
			$zone_trunc = $zone;
		}

		if (is_numeric($offset))
		{
			$selected = ($offset == $default) ? ' selected="selected"' : '';
			$tz_select .= '<option title="' . $zone . '" value="' . $offset . '"' . $selected . '>' . $zone_trunc . '</option>';
		}
	}

	return $tz_select;
}

// Functions handling topic/post tracking/marking

/**
* Marks a topic/forum as read
* Marks a topic as posted to
*
* @param int $user_id can only be used with $mode == 'post'
*/
function markread($mode, $forum_id = false, $topic_id = false, $post_time = 0, $user_id = 0)
{
	global $db, $user, $config;

	if ($mode == 'all')
	{
		if ($forum_id === false || !sizeof($forum_id))
		{
			if ($config['load_db_lastread'] && $user->data['is_registered'])
			{
				// Mark all forums read (index page)
				$db->sql_query('DELETE FROM ' . TOPICS_TRACK_TABLE . " WHERE user_id = {$user->data['user_id']}");
				$db->sql_query('DELETE FROM ' . FORUMS_TRACK_TABLE . " WHERE user_id = {$user->data['user_id']}");
				$db->sql_query('UPDATE ' . USERS_TABLE . ' SET user_lastmark = ' . time() . " WHERE user_id = {$user->data['user_id']}");
			}
			else if ($config['load_anon_lastread'] || $user->data['is_registered'])
			{
				$tracking_topics = (isset($_COOKIE[$config['cookie_name'] . '_track'])) ? ((STRIP) ? stripslashes($_COOKIE[$config['cookie_name'] . '_track']) : $_COOKIE[$config['cookie_name'] . '_track']) : '';
				$tracking_topics = ($tracking_topics) ? tracking_unserialize($tracking_topics) : array();

				unset($tracking_topics['tf']);
				unset($tracking_topics['t']);
				unset($tracking_topics['f']);
				$tracking_topics['l'] = base_convert(time() - $config['board_startdate'], 10, 36);

				$user->set_cookie('track', tracking_serialize($tracking_topics), time() + 31536000);
				$_COOKIE[$config['cookie_name'] . '_track'] = (STRIP) ? addslashes(tracking_serialize($tracking_topics)) : tracking_serialize($tracking_topics);

				unset($tracking_topics);

				if ($user->data['is_registered'])
				{
					$db->sql_query('UPDATE ' . USERS_TABLE . ' SET user_lastmark = ' . time() . " WHERE user_id = {$user->data['user_id']}");
				}
			}
		}

		return;
	}
	else if ($mode == 'topics')
	{
		// Mark all topics in forums read
		if (!is_array($forum_id))
		{
			$forum_id = array($forum_id);
		}

		// Add 0 to forums array to mark global announcements correctly
		// $forum_id[] = 0;

		if ($config['load_db_lastread'] && $user->data['is_registered'])
		{
			$sql = 'DELETE FROM ' . TOPICS_TRACK_TABLE . "
				WHERE user_id = {$user->data['user_id']}
					AND " . $db->sql_in_set('forum_id', $forum_id);
			$db->sql_query($sql);

			$sql = 'SELECT forum_id
				FROM ' . FORUMS_TRACK_TABLE . "
				WHERE user_id = {$user->data['user_id']}
					AND " . $db->sql_in_set('forum_id', $forum_id);
			$result = $db->sql_query($sql);

			$sql_update = array();
			while ($row = $db->sql_fetchrow($result))
			{
				$sql_update[] = (int) $row['forum_id'];
			}
			$db->sql_freeresult($result);

			if (sizeof($sql_update))
			{
				$sql = 'UPDATE ' . FORUMS_TRACK_TABLE . '
					SET mark_time = ' . time() . "
					WHERE user_id = {$user->data['user_id']}
						AND " . $db->sql_in_set('forum_id', $sql_update);
				$db->sql_query($sql);
			}

			if ($sql_insert = array_diff($forum_id, $sql_update))
			{
				$sql_ary = array();
				foreach ($sql_insert as $f_id)
				{
					$sql_ary[] = array(
						'user_id'	=> (int) $user->data['user_id'],
						'forum_id'	=> (int) $f_id,
						'mark_time'	=> time()
					);
				}

				$db->sql_multi_insert(FORUMS_TRACK_TABLE, $sql_ary);
			}
		}
		else if ($config['load_anon_lastread'] || $user->data['is_registered'])
		{
			$tracking = (isset($_COOKIE[$config['cookie_name'] . '_track'])) ? ((STRIP) ? stripslashes($_COOKIE[$config['cookie_name'] . '_track']) : $_COOKIE[$config['cookie_name'] . '_track']) : '';
			$tracking = ($tracking) ? tracking_unserialize($tracking) : array();

			foreach ($forum_id as $f_id)
			{
				$topic_ids36 = (isset($tracking['tf'][$f_id])) ? $tracking['tf'][$f_id] : array();

				if (isset($tracking['tf'][$f_id]))
				{
					unset($tracking['tf'][$f_id]);
				}

				foreach ($topic_ids36 as $topic_id36)
				{
					unset($tracking['t'][$topic_id36]);
				}

				if (isset($tracking['f'][$f_id]))
				{
					unset($tracking['f'][$f_id]);
				}

				$tracking['f'][$f_id] = base_convert(time() - $config['board_startdate'], 10, 36);
			}

			if (isset($tracking['tf']) && empty($tracking['tf']))
			{
				unset($tracking['tf']);
			}

			$user->set_cookie('track', tracking_serialize($tracking), time() + 31536000);
			$_COOKIE[$config['cookie_name'] . '_track'] = (STRIP) ? addslashes(tracking_serialize($tracking)) : tracking_serialize($tracking);

			unset($tracking);
		}

		return;
	}
	else if ($mode == 'topic')
	{
		if ($topic_id === false || $forum_id === false)
		{
			return;
		}

		if ($config['load_db_lastread'] && $user->data['is_registered'])
		{
			$sql = 'UPDATE ' . TOPICS_TRACK_TABLE . '
				SET mark_time = ' . (($post_time) ? $post_time : time()) . "
				WHERE user_id = {$user->data['user_id']}
					AND topic_id = $topic_id";
			$db->sql_query($sql);

			// insert row
			if (!$db->sql_affectedrows())
			{
				$db->sql_return_on_error(true);

				$sql_ary = array(
					'user_id'		=> (int) $user->data['user_id'],
					'topic_id'		=> (int) $topic_id,
					'forum_id'		=> (int) $forum_id,
					'mark_time'		=> ($post_time) ? (int) $post_time : time(),
				);

				$db->sql_query('INSERT INTO ' . TOPICS_TRACK_TABLE . ' ' . $db->sql_build_array('INSERT', $sql_ary));

				$db->sql_return_on_error(false);
			}
		}
		else if ($config['load_anon_lastread'] || $user->data['is_registered'])
		{
			$tracking = (isset($_COOKIE[$config['cookie_name'] . '_track'])) ? ((STRIP) ? stripslashes($_COOKIE[$config['cookie_name'] . '_track']) : $_COOKIE[$config['cookie_name'] . '_track']) : '';
			$tracking = ($tracking) ? tracking_unserialize($tracking) : array();

			$topic_id36 = base_convert($topic_id, 10, 36);

			if (!isset($tracking['t'][$topic_id36]))
			{
				$tracking['tf'][$forum_id][$topic_id36] = true;
			}

			$post_time = ($post_time) ? $post_time : time();
			$tracking['t'][$topic_id36] = base_convert($post_time - $config['board_startdate'], 10, 36);

			// If the cookie grows larger than 10000 characters we will remove the smallest value
			// This can result in old topics being unread - but most of the time it should be accurate...
			if (isset($_COOKIE[$config['cookie_name'] . '_track']) && strlen($_COOKIE[$config['cookie_name'] . '_track']) > 10000)
			{
				//echo 'Cookie grown too large' . print_r($tracking, true);

				// We get the ten most minimum stored time offsets and its associated topic ids
				$time_keys = array();
				for ($i = 0; $i < 10 && sizeof($tracking['t']); $i++)
				{
					$min_value = min($tracking['t']);
					$m_tkey = array_search($min_value, $tracking['t']);
					unset($tracking['t'][$m_tkey]);

					$time_keys[$m_tkey] = $min_value;
				}

				// Now remove the topic ids from the array...
				foreach ($tracking['tf'] as $f_id => $topic_id_ary)
				{
					foreach ($time_keys as $m_tkey => $min_value)
					{
						if (isset($topic_id_ary[$m_tkey]))
						{
							$tracking['f'][$f_id] = $min_value;
							unset($tracking['tf'][$f_id][$m_tkey]);
						}
					}
				}

				if ($user->data['is_registered'])
				{
					$user->data['user_lastmark'] = intval(base_convert(max($time_keys) + $config['board_startdate'], 36, 10));
					$db->sql_query('UPDATE ' . USERS_TABLE . ' SET user_lastmark = ' . $user->data['user_lastmark'] . " WHERE user_id = {$user->data['user_id']}");
				}
				else
				{
					$tracking['l'] = max($time_keys);
				}
			}

			$user->set_cookie('track', tracking_serialize($tracking), time() + 31536000);
			$_COOKIE[$config['cookie_name'] . '_track'] = (STRIP) ? addslashes(tracking_serialize($tracking)) : tracking_serialize($tracking);
		}

		return;
	}
	else if ($mode == 'post')
	{
		if ($topic_id === false)
		{
			return;
		}

		$use_user_id = (!$user_id) ? $user->data['user_id'] : $user_id;

		if ($config['load_db_track'] && $use_user_id != ANONYMOUS)
		{
			$db->sql_return_on_error(true);

			$sql_ary = array(
				'user_id'		=> (int) $use_user_id,
				'topic_id'		=> (int) $topic_id,
				'topic_posted'	=> 1
			);

			$db->sql_query('INSERT INTO ' . TOPICS_POSTED_TABLE . ' ' . $db->sql_build_array('INSERT', $sql_ary));

			$db->sql_return_on_error(false);
		}

		return;
	}
}

/**
* Get topic tracking info by using already fetched info
*/
function get_topic_tracking($forum_id, $topic_ids, &$rowset, $forum_mark_time, $global_announce_list = false)
{
	global $config, $user;

	$last_read = array();

	if (!is_array($topic_ids))
	{
		$topic_ids = array($topic_ids);
	}

	foreach ($topic_ids as $topic_id)
	{
		if (!empty($rowset[$topic_id]['mark_time']))
		{
			$last_read[$topic_id] = $rowset[$topic_id]['mark_time'];
		}
	}

	$topic_ids = array_diff($topic_ids, array_keys($last_read));

	if (sizeof($topic_ids))
	{
		$mark_time = array();

		// Get global announcement info
		if ($global_announce_list && sizeof($global_announce_list))
		{
			if (!isset($forum_mark_time[0]))
			{
				global $db;

				$sql = 'SELECT mark_time
					FROM ' . FORUMS_TRACK_TABLE . "
					WHERE user_id = {$user->data['user_id']}
						AND forum_id = 0";
				$result = $db->sql_query($sql);
				$row = $db->sql_fetchrow($result);
				$db->sql_freeresult($result);

				if ($row)
				{
					$mark_time[0] = $row['mark_time'];
				}
			}
			else
			{
				if ($forum_mark_time[0] !== false)
				{
					$mark_time[0] = $forum_mark_time[0];
				}
			}
		}

		if (!empty($forum_mark_time[$forum_id]) && $forum_mark_time[$forum_id] !== false)
		{
			$mark_time[$forum_id] = $forum_mark_time[$forum_id];
		}

		$user_lastmark = (isset($mark_time[$forum_id])) ? $mark_time[$forum_id] : $user->data['user_lastmark'];

		foreach ($topic_ids as $topic_id)
		{
			if ($global_announce_list && isset($global_announce_list[$topic_id]))
			{
				$last_read[$topic_id] = (isset($mark_time[0])) ? $mark_time[0] : $user_lastmark;
			}
			else
			{
				$last_read[$topic_id] = $user_lastmark;
			}
		}
	}

	return $last_read;
}

/**
* Get topic tracking info from db (for cookie based tracking only this function is used)
*/
function get_complete_topic_tracking($forum_id, $topic_ids, $global_announce_list = false)
{
	global $config, $user;

	$last_read = array();

	if (!is_array($topic_ids))
	{
		$topic_ids = array($topic_ids);
	}

	if ($config['load_db_lastread'] && $user->data['is_registered'])
	{
		global $db;

		$sql = 'SELECT topic_id, mark_time
			FROM ' . TOPICS_TRACK_TABLE . "
			WHERE user_id = {$user->data['user_id']}
				AND " . $db->sql_in_set('topic_id', $topic_ids);
		$result = $db->sql_query($sql);

		while ($row = $db->sql_fetchrow($result))
		{
			$last_read[$row['topic_id']] = $row['mark_time'];
		}
		$db->sql_freeresult($result);

		$topic_ids = array_diff($topic_ids, array_keys($last_read));

		if (sizeof($topic_ids))
		{
			$sql = 'SELECT forum_id, mark_time
				FROM ' . FORUMS_TRACK_TABLE . "
				WHERE user_id = {$user->data['user_id']}
					AND forum_id " .
					(($global_announce_list && sizeof($global_announce_list)) ? "IN (0, $forum_id)" : "= $forum_id");
			$result = $db->sql_query($sql);

			$mark_time = array();
			while ($row = $db->sql_fetchrow($result))
			{
				$mark_time[$row['forum_id']] = $row['mark_time'];
			}
			$db->sql_freeresult($result);

			$user_lastmark = (isset($mark_time[$forum_id])) ? $mark_time[$forum_id] : $user->data['user_lastmark'];

			foreach ($topic_ids as $topic_id)
			{
				if ($global_announce_list && isset($global_announce_list[$topic_id]))
				{
					$last_read[$topic_id] = (isset($mark_time[0])) ? $mark_time[0] : $user_lastmark;
				}
				else
				{
					$last_read[$topic_id] = $user_lastmark;
				}
			}
		}
	}
	else if ($config['load_anon_lastread'] || $user->data['is_registered'])
	{
		global $tracking_topics;

		if (!isset($tracking_topics) || !sizeof($tracking_topics))
		{
			$tracking_topics = (isset($_COOKIE[$config['cookie_name'] . '_track'])) ? ((STRIP) ? stripslashes($_COOKIE[$config['cookie_name'] . '_track']) : $_COOKIE[$config['cookie_name'] . '_track']) : '';
			$tracking_topics = ($tracking_topics) ? tracking_unserialize($tracking_topics) : array();
		}

		if (!$user->data['is_registered'])
		{
			$user_lastmark = (isset($tracking_topics['l'])) ? base_convert($tracking_topics['l'], 36, 10) + $config['board_startdate'] : 0;
		}
		else
		{
			$user_lastmark = $user->data['user_lastmark'];
		}

		foreach ($topic_ids as $topic_id)
		{
			$topic_id36 = base_convert($topic_id, 10, 36);

			if (isset($tracking_topics['t'][$topic_id36]))
			{
				$last_read[$topic_id] = base_convert($tracking_topics['t'][$topic_id36], 36, 10) + $config['board_startdate'];
			}
		}

		$topic_ids = array_diff($topic_ids, array_keys($last_read));

		if (sizeof($topic_ids))
		{
			$mark_time = array();
			if ($global_announce_list && sizeof($global_announce_list))
			{
				if (isset($tracking_topics['f'][0]))
				{
					$mark_time[0] = base_convert($tracking_topics['f'][0], 36, 10) + $config['board_startdate'];
				}
			}

			if (isset($tracking_topics['f'][$forum_id]))
			{
				$mark_time[$forum_id] = base_convert($tracking_topics['f'][$forum_id], 36, 10) + $config['board_startdate'];
			}

			$user_lastmark = (isset($mark_time[$forum_id])) ? $mark_time[$forum_id] : $user_lastmark;

			foreach ($topic_ids as $topic_id)
			{
				if ($global_announce_list && isset($global_announce_list[$topic_id]))
				{
					$last_read[$topic_id] = (isset($mark_time[0])) ? $mark_time[0] : $user_lastmark;
				}
				else
				{
					$last_read[$topic_id] = $user_lastmark;
				}
			}
		}
	}

	return $last_read;
}

/**
* Get list of unread topics
*
* @param int $user_id			User ID (or false for current user)
* @param string $sql_extra		Extra WHERE SQL statement
* @param string $sql_sort		ORDER BY SQL sorting statement
* @param string $sql_limit		Limits the size of unread topics list, 0 for unlimited query
*
* @return array[int][int]		Topic ids as keys, mark_time of topic as value
*/
function get_unread_topics($user_id = false, $sql_extra = '', $sql_sort = '', $sql_limit = 1001)
{
	global $config, $db, $user;

	$user_id = ($user_id === false) ? (int) $user->data['user_id'] : (int) $user_id;

	// Data array we're going to return
	$unread_topics = array();

	if (empty($sql_sort))
	{
		$sql_sort = 'ORDER BY t.topic_last_post_time DESC';
	}

	if ($config['load_db_lastread'] && $user->data['is_registered'])
	{
		// Get list of the unread topics
		$last_mark = $user->data['user_lastmark'];

		$sql_array = array(
			'SELECT'		=> 't.topic_id, t.topic_last_post_time, tt.mark_time as topic_mark_time, ft.mark_time as forum_mark_time',

			'FROM'			=> array(TOPICS_TABLE => 't'),

			'LEFT_JOIN'		=> array(
				array(
					'FROM'	=> array(TOPICS_TRACK_TABLE => 'tt'),
					'ON'	=> "tt.user_id = $user_id AND t.topic_id = tt.topic_id",
				),
				array(
					'FROM'	=> array(FORUMS_TRACK_TABLE => 'ft'),
					'ON'	=> "ft.user_id = $user_id AND t.forum_id = ft.forum_id",
				),
			),

			'WHERE'			=> "
				(
				(tt.mark_time IS NOT NULL AND t.topic_last_post_time > tt.mark_time) OR
				(tt.mark_time IS NULL AND ft.mark_time IS NOT NULL AND t.topic_last_post_time > ft.mark_time) OR
				(tt.mark_time IS NULL AND ft.mark_time IS NULL AND t.topic_last_post_time > $last_mark)
				)
				$sql_extra
				$sql_sort",
		);

		$sql = $db->sql_build_query('SELECT', $sql_array);
		$result = $db->sql_query_limit($sql, $sql_limit);

		while ($row = $db->sql_fetchrow($result))
		{
			$topic_id = (int) $row['topic_id'];
			$unread_topics[$topic_id] = ($row['topic_mark_time']) ? (int) $row['topic_mark_time'] : (($row['forum_mark_time']) ? (int) $row['forum_mark_time'] : $last_mark);
		}
		$db->sql_freeresult($result);
	}
	else if ($config['load_anon_lastread'] || $user->data['is_registered'])
	{
		global $tracking_topics;

		if (empty($tracking_topics))
		{
			$tracking_topics = request_var($config['cookie_name'] . '_track', '', false, true);
			$tracking_topics = ($tracking_topics) ? tracking_unserialize($tracking_topics) : array();
		}

		if (!$user->data['is_registered'])
		{
			$user_lastmark = (isset($tracking_topics['l'])) ? base_convert($tracking_topics['l'], 36, 10) + $config['board_startdate'] : 0;
		}
		else
		{
			$user_lastmark = (int) $user->data['user_lastmark'];
		}

		$sql = 'SELECT t.topic_id, t.forum_id, t.topic_last_post_time
			FROM ' . TOPICS_TABLE . ' t
			WHERE t.topic_last_post_time > ' . $user_lastmark . "
			$sql_extra
			$sql_sort";
		$result = $db->sql_query_limit($sql, $sql_limit);

		while ($row = $db->sql_fetchrow($result))
		{
			$forum_id = (int) $row['forum_id'];
			$topic_id = (int) $row['topic_id'];
			$topic_id36 = base_convert($topic_id, 10, 36);

			if (isset($tracking_topics['t'][$topic_id36]))
			{
				$last_read = base_convert($tracking_topics['t'][$topic_id36], 36, 10) + $config['board_startdate'];

				if ($row['topic_last_post_time'] > $last_read)
				{
					$unread_topics[$topic_id] = $last_read;
				}
			}
			else if (isset($tracking_topics['f'][$forum_id]))
			{
				$mark_time = base_convert($tracking_topics['f'][$forum_id], 36, 10) + $config['board_startdate'];

				if ($row['topic_last_post_time'] > $mark_time)
				{
					$unread_topics[$topic_id] = $mark_time;
				}
			}
			else
			{
				$unread_topics[$topic_id] = $user_lastmark;
			}
		}
		$db->sql_freeresult($result);
	}

	return $unread_topics;
}

/**
* Check for read forums and update topic tracking info accordingly
*
* @param int $forum_id the forum id to check
* @param int $forum_last_post_time the forums last post time
* @param int $f_mark_time the forums last mark time if user is registered and load_db_lastread enabled
* @param int $mark_time_forum false if the mark time needs to be obtained, else the last users forum mark time
*
* @return true if complete forum got marked read, else false.
*/
function update_forum_tracking_info($forum_id, $forum_last_post_time, $f_mark_time = false, $mark_time_forum = false)
{
	global $db, $tracking_topics, $user, $config;

	// Determine the users last forum mark time if not given.
	if ($mark_time_forum === false)
	{
		if ($config['load_db_lastread'] && $user->data['is_registered'])
		{
			$mark_time_forum = (!empty($f_mark_time)) ? $f_mark_time : $user->data['user_lastmark'];
		}
		else if ($config['load_anon_lastread'] || $user->data['is_registered'])
		{
			$tracking_topics = (isset($_COOKIE[$config['cookie_name'] . '_track'])) ? ((STRIP) ? stripslashes($_COOKIE[$config['cookie_name'] . '_track']) : $_COOKIE[$config['cookie_name'] . '_track']) : '';
			$tracking_topics = ($tracking_topics) ? tracking_unserialize($tracking_topics) : array();

			if (!$user->data['is_registered'])
			{
				$user->data['user_lastmark'] = (isset($tracking_topics['l'])) ? (int) (base_convert($tracking_topics['l'], 36, 10) + $config['board_startdate']) : 0;
			}

			$mark_time_forum = (isset($tracking_topics['f'][$forum_id])) ? (int) (base_convert($tracking_topics['f'][$forum_id], 36, 10) + $config['board_startdate']) : $user->data['user_lastmark'];
		}
	}

	// Check the forum for any left unread topics.
	// If there are none, we mark the forum as read.
	if ($config['load_db_lastread'] && $user->data['is_registered'])
	{
		if ($mark_time_forum >= $forum_last_post_time)
		{
			// We do not need to mark read, this happened before. Therefore setting this to true
			$row = true;
		}
		else
		{
			$sql = 'SELECT t.forum_id FROM ' . TOPICS_TABLE . ' t
				LEFT JOIN ' . TOPICS_TRACK_TABLE . ' tt ON (tt.topic_id = t.topic_id AND tt.user_id = ' . $user->data['user_id'] . ')
				WHERE t.forum_id = ' . $forum_id . '
					AND t.topic_last_post_time > ' . $mark_time_forum . '
					AND t.topic_moved_id = 0
					AND (tt.topic_id IS NULL OR tt.mark_time < t.topic_last_post_time)
				GROUP BY t.forum_id';
			$result = $db->sql_query_limit($sql, 1);
			$row = $db->sql_fetchrow($result);
			$db->sql_freeresult($result);
		}
	}
	else if ($config['load_anon_lastread'] || $user->data['is_registered'])
	{
		// Get information from cookie
		$row = false;

		if (!isset($tracking_topics['tf'][$forum_id]))
		{
			// We do not need to mark read, this happened before. Therefore setting this to true
			$row = true;
		}
		else
		{
			$sql = 'SELECT topic_id
				FROM ' . TOPICS_TABLE . '
				WHERE forum_id = ' . $forum_id . '
					AND topic_last_post_time > ' . $mark_time_forum . '
					AND topic_moved_id = 0';
			$result = $db->sql_query($sql);

			$check_forum = $tracking_topics['tf'][$forum_id];
			$unread = false;

			while ($row = $db->sql_fetchrow($result))
			{
				if (!isset($check_forum[base_convert($row['topic_id'], 10, 36)]))
				{
					$unread = true;
					break;
				}
			}
			$db->sql_freeresult($result);

			$row = $unread;
		}
	}
	else
	{
		$row = true;
	}

	if (!$row)
	{
		markread('topics', $forum_id);
		return true;
	}

	return false;
}

/**
* Transform an array into a serialized format
*/
function tracking_serialize($input)
{
	$out = '';
	foreach ($input as $key => $value)
	{
		if (is_array($value))
		{
			$out .= $key . ':(' . tracking_serialize($value) . ');';
		}
		else
		{
			$out .= $key . ':' . $value . ';';
		}
	}
	return $out;
}

/**
* Transform a serialized array into an actual array
*/
function tracking_unserialize($string, $max_depth = 3)
{
	$n = strlen($string);
	if ($n > 10010)
	{
		die('Invalid data supplied');
	}
	$data = $stack = array();
	$key = '';
	$mode = 0;
	$level = &$data;
	for ($i = 0; $i < $n; ++$i)
	{
		switch ($mode)
		{
			case 0:
				switch ($string[$i])
				{
					case ':':
						$level[$key] = 0;
						$mode = 1;
					break;
					case ')':
						unset($level);
						$level = array_pop($stack);
						$mode = 3;
					break;
					default:
						$key .= $string[$i];
				}
			break;

			case 1:
				switch ($string[$i])
				{
					case '(':
						if (sizeof($stack) >= $max_depth)
						{
							die('Invalid data supplied');
						}
						$stack[] = &$level;
						$level[$key] = array();
						$level = &$level[$key];
						$key = '';
						$mode = 0;
					break;
					default:
						$level[$key] = $string[$i];
						$mode = 2;
					break;
				}
			break;

			case 2:
				switch ($string[$i])
				{
					case ')':
						unset($level);
						$level = array_pop($stack);
						$mode = 3;
					break;
					case ';':
						$key = '';
						$mode = 0;
					break;
					default:
						$level[$key] .= $string[$i];
					break;
				}
			break;

			case 3:
				switch ($string[$i])
				{
					case ')':
						unset($level);
						$level = array_pop($stack);
					break;
					case ';':
						$key = '';
						$mode = 0;
					break;
					default:
						die('Invalid data supplied');
					break;
				}
			break;
		}
	}

	if (sizeof($stack) != 0 || ($mode != 0 && $mode != 3))
	{
		die('Invalid data supplied');
	}

	return $level;
}

// Pagination functions

/**
* Pagination routine, generates page number sequence
* tpl_prefix is for using different pagination blocks at one page
*/
function generate_pagination($base_url, $num_items, $per_page, $start_item, $add_prevnext_text = false, $tpl_prefix = '')
{
	global $template, $user;

	// Make sure $per_page is a valid value
	$per_page = ($per_page <= 0) ? 1 : $per_page;

	$seperator = '<span class="page-sep">' . $user->lang['COMMA_SEPARATOR'] . '</span>';
	$total_pages = ceil($num_items / $per_page);

	if ($total_pages == 1 || !$num_items)
	{
		return false;
	}

	$on_page = floor($start_item / $per_page) + 1;
	$url_delim = (strpos($base_url, '?') === false) ? '?' : ((strpos($base_url, '?') === strlen($base_url) - 1) ? '' : '&');

	$page_string = ($on_page == 1) ? '<strong>1</strong>' : '<a href="' . $base_url . '">1</a>';

	if ($total_pages > 5)
	{
		$start_cnt = min(max(1, $on_page - 4), $total_pages - 5);
		$end_cnt = max(min($total_pages, $on_page + 4), 6);

		$page_string .= ($start_cnt > 1) ? ' ... ' : $seperator;

		for ($i = $start_cnt + 1; $i < $end_cnt; $i++)
		{
			$page_string .= ($i == $on_page) ? '<strong>' . $i . '</strong>' : '<a href="' . $base_url . "{$url_delim}start=" . (($i - 1) * $per_page) . '">' . $i . '</a>';
			if ($i < $end_cnt - 1)
			{
				$page_string .= $seperator;
			}
		}

		$page_string .= ($end_cnt < $total_pages) ? ' ... ' : $seperator;
	}
	else
	{
		$page_string .= $seperator;

		for ($i = 2; $i < $total_pages; $i++)
		{
			$page_string .= ($i == $on_page) ? '<strong>' . $i . '</strong>' : '<a href="' . $base_url . "{$url_delim}start=" . (($i - 1) * $per_page) . '">' . $i . '</a>';
			if ($i < $total_pages)
			{
				$page_string .= $seperator;
			}
		}
	}

	$page_string .= ($on_page == $total_pages) ? '<strong>' . $total_pages . '</strong>' : '<a href="' . $base_url . "{$url_delim}start=" . (($total_pages - 1) * $per_page) . '">' . $total_pages . '</a>';

	if ($add_prevnext_text)
	{
		if ($on_page != 1)
		{
			$page_string = '<a href="' . $base_url . "{$url_delim}start=" . (($on_page - 2) * $per_page) . '">' . $user->lang['PREVIOUS'] . '</a>&nbsp;&nbsp;' . $page_string;
		}

		if ($on_page != $total_pages)
		{
			$page_string .= '&nbsp;&nbsp;<a href="' . $base_url . "{$url_delim}start=" . ($on_page * $per_page) . '">' . $user->lang['NEXT'] . '</a>';
		}
	}

	$template->assign_vars(array(
		$tpl_prefix . 'BASE_URL'		=> $base_url,
		'A_' . $tpl_prefix . 'BASE_URL'	=> addslashes($base_url),
		$tpl_prefix . 'PER_PAGE'		=> $per_page,

		$tpl_prefix . 'PREVIOUS_PAGE'	=> ($on_page == 1) ? '' : $base_url . "{$url_delim}start=" . (($on_page - 2) * $per_page),
		$tpl_prefix . 'NEXT_PAGE'		=> ($on_page == $total_pages) ? '' : $base_url . "{$url_delim}start=" . ($on_page * $per_page),
		$tpl_prefix . 'TOTAL_PAGES'		=> $total_pages,
	));

	return $page_string;
}

/**
* Return current page (pagination)
*/
function on_page($num_items, $per_page, $start)
{
	global $template, $user;

	// Make sure $per_page is a valid value
	$per_page = ($per_page <= 0) ? 1 : $per_page;

	$on_page = floor($start / $per_page) + 1;

	$template->assign_vars(array(
		'ON_PAGE'		=> $on_page)
	);

	return sprintf($user->lang['PAGE_OF'], $on_page, max(ceil($num_items / $per_page), 1));
}

// Server functions (building urls, redirecting...)

/**
* Append session id to url.
* This function supports hooks.
*
* @param string $url The url the session id needs to be appended to (can have params)
* @param mixed $params String or array of additional url parameters
* @param bool $is_amp Is url using & (true) or & (false)
* @param string $session_id Possibility to use a custom session id instead of the global one
*
* Examples:
* <code>
* append_sid("{$phpbb_root_path}viewtopic.$phpEx?t=1&f=2");
* append_sid("{$phpbb_root_path}viewtopic.$phpEx", 't=1&f=2');
* append_sid("{$phpbb_root_path}viewtopic.$phpEx", 't=1&f=2', false);
* append_sid("{$phpbb_root_path}viewtopic.$phpEx", array('t' => 1, 'f' => 2));
* </code>
*
*/
function append_sid($url, $params = false, $is_amp = true, $session_id = false)
{
	global $_SID, $_EXTRA_URL, $phpbb_hook;

	// Developers using the hook function need to globalise the $_SID and $_EXTRA_URL on their own and also handle it appropiatly.
	// They could mimick most of what is within this function
	if (!empty($phpbb_hook) && $phpbb_hook->call_hook(__FUNCTION__, $url, $params, $is_amp, $session_id))
	{
		if ($phpbb_hook->hook_return(__FUNCTION__))
		{
			return $phpbb_hook->hook_return_result(__FUNCTION__);
		}
	}

	$params_is_array = is_array($params);

	// Get anchor
	$anchor = '';
	if (strpos($url, '#') !== false)
	{
		list($url, $anchor) = explode('#', $url, 2);
		$anchor = '#' . $anchor;
	}
	else if (!$params_is_array && strpos($params, '#') !== false)
	{
		list($params, $anchor) = explode('#', $params, 2);
		$anchor = '#' . $anchor;
	}

	// Handle really simple cases quickly
	if ($_SID == '' && $session_id === false && empty($_EXTRA_URL) && !$params_is_array && !$anchor)
	{
		if ($params === false)
		{
			return $url;
		}

		$url_delim = (strpos($url, '?') === false) ? '?' : (($is_amp) ? '&' : '&');
		return $url . ($params !== false ? $url_delim. $params : '');
	}

	// Assign sid if session id is not specified
	if ($session_id === false)
	{
		$session_id = $_SID;
	}

	$amp_delim = ($is_amp) ? '&' : '&';
	$url_delim = (strpos($url, '?') === false) ? '?' : $amp_delim;

	// Appending custom url parameter?
	$append_url = (!empty($_EXTRA_URL)) ? implode($amp_delim, $_EXTRA_URL) : '';

	// Use the short variant if possible ;)
	if ($params === false)
	{
		// Append session id
		if (!$session_id)
		{
			return $url . (($append_url) ? $url_delim . $append_url : '') . $anchor;
		}
		else
		{
			return $url . (($append_url) ? $url_delim . $append_url . $amp_delim : $url_delim) . 'sid=' . $session_id . $anchor;
		}
	}

	// Build string if parameters are specified as array
	if (is_array($params))
	{
		$output = array();

		foreach ($params as $key => $item)
		{
			if ($item === NULL)
			{
				continue;
			}

			if ($key == '#')
			{
				$anchor = '#' . $item;
				continue;
			}

			$output[] = $key . '=' . $item;
		}

		$params = implode($amp_delim, $output);
	}

	// Append session id and parameters (even if they are empty)
	// If parameters are empty, the developer can still append his/her parameters without caring about the delimiter
	return $url . (($append_url) ? $url_delim . $append_url . $amp_delim : $url_delim) . $params . ((!$session_id) ? '' : $amp_delim . 'sid=' . $session_id) . $anchor;
}

/**
* Generate board url (example: http://www.example.com/phpBB)
* @param bool $without_script_path if set to true the script path gets not appended (example: http://www.example.com)
*/
function generate_board_url($without_script_path = false)
{
	global $config, $user;

	$server_name = $user->host;
	$server_port = (!empty($_SERVER['SERVER_PORT'])) ? (int) $_SERVER['SERVER_PORT'] : (int) getenv('SERVER_PORT');

	// Forcing server vars is the only way to specify/override the protocol
	if ($config['force_server_vars'] || !$server_name)
	{
		$server_protocol = ($config['server_protocol']) ? $config['server_protocol'] : (($config['cookie_secure']) ? 'https://' : 'http://');
		$server_name = $config['server_name'];
		$server_port = (int) $config['server_port'];
		$script_path = $config['script_path'];

		$url = $server_protocol . $server_name;
		$cookie_secure = $config['cookie_secure'];
	}
	else
	{
		// Do not rely on cookie_secure, users seem to think that it means a secured cookie instead of an encrypted connection
		$cookie_secure = (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == 'on') ? 1 : 0;
		$url = (($cookie_secure) ? 'https://' : 'http://') . $server_name;

		$script_path = $user->page['root_script_path'];
	}

	if ($server_port && (($cookie_secure && $server_port <> 443) || (!$cookie_secure && $server_port <> 80)))
	{
		// HTTP HOST can carry a port number (we fetch $user->host, but for old versions this may be true)
		if (strpos($server_name, ':') === false)
		{
			$url .= ':' . $server_port;
		}
	}

	if (!$without_script_path)
	{
		$url .= $script_path;
	}

	// Strip / from the end
	if (substr($url, -1, 1) == '/')
	{
		$url = substr($url, 0, -1);
	}

	return $url;
}

/**
* Redirects the user to another page then exits the script nicely
* This function is intended for urls within the board. It's not meant to redirect to cross-domains.
*
* @param string $url The url to redirect to
* @param bool $return If true, do not redirect but return the sanitized URL. Default is no return.
* @param bool $disable_cd_check If true, redirect() will redirect to an external domain. If false, the redirect point to the boards url if it does not match the current domain. Default is false.
*/
function redirect($url, $return = false, $disable_cd_check = false)
{
	global $db, $cache, $config, $user, $phpbb_root_path;

	if (empty($user->lang))
	{
		$user->add_lang('common');
	}

	if (!$return)
	{
		garbage_collection();
	}

	// Make sure no &'s are in, this will break the redirect
	$url = str_replace('&', '&', $url);

	// Determine which type of redirect we need to handle...
	$url_parts = @parse_url($url);

	if ($url_parts === false)
	{
		// Malformed url, redirect to current page...
		$url = generate_board_url() . '/' . $user->page['page'];
	}
	else if (!empty($url_parts['scheme']) && !empty($url_parts['host']))
	{
		// Attention: only able to redirect within the same domain if $disable_cd_check is false (yourdomain.com -> http://www.yourdomain.com will not work)
		if (!$disable_cd_check && $url_parts['host'] !== $user->host)
		{
			$url = generate_board_url();
		}
	}
	else if ($url[0] == '/')
	{
		// Absolute uri, prepend direct url...
		$url = generate_board_url(true) . $url;
	}
	else
	{
		// Relative uri
		$pathinfo = pathinfo($url);

		// Is the uri pointing to the current directory?
		if ($pathinfo['dirname'] == '.')
		{
			$url = str_replace('./', '', $url);

			// Strip / from the beginning
			if ($url && substr($url, 0, 1) == '/')
			{
				$url = substr($url, 1);
			}

			if ($user->page['page_dir'])
			{
				$url = generate_board_url() . '/' . $user->page['page_dir'] . '/' . $url;
			}
			else
			{
				$url = generate_board_url() . '/' . $url;
			}
		}
		else
		{
			// Used ./ before, but $phpbb_root_path is working better with urls within another root path
			$root_dirs = explode('/', str_replace('\\', '/', phpbb_realpath($phpbb_root_path)));
			$page_dirs = explode('/', str_replace('\\', '/', phpbb_realpath($pathinfo['dirname'])));
			$intersection = array_intersect_assoc($root_dirs, $page_dirs);

			$root_dirs = array_diff_assoc($root_dirs, $intersection);
			$page_dirs = array_diff_assoc($page_dirs, $intersection);

			$dir = str_repeat('../', sizeof($root_dirs)) . implode('/', $page_dirs);

			// Strip / from the end
			if ($dir && substr($dir, -1, 1) == '/')
			{
				$dir = substr($dir, 0, -1);
			}

			// Strip / from the beginning
			if ($dir && substr($dir, 0, 1) == '/')
			{
				$dir = substr($dir, 1);
			}

			$url = str_replace($pathinfo['dirname'] . '/', '', $url);

			// Strip / from the beginning
			if (substr($url, 0, 1) == '/')
			{
				$url = substr($url, 1);
			}

			$url = (!empty($dir) ? $dir . '/' : '') . $url;
			$url = generate_board_url() . '/' . $url;
		}
	}

	// Make sure no linebreaks are there... to prevent http response splitting for PHP < 4.4.2
	if (strpos(urldecode($url), "\n") !== false || strpos(urldecode($url), "\r") !== false || strpos($url, ';') !== false)
	{
		trigger_error('Tried to redirect to potentially insecure url.', E_USER_ERROR);
	}

	// Now, also check the protocol and for a valid url the last time...
	$allowed_protocols = array('http', 'https', 'ftp', 'ftps');
	$url_parts = parse_url($url);

	if ($url_parts === false || empty($url_parts['scheme']) || !in_array($url_parts['scheme'], $allowed_protocols))
	{
		trigger_error('Tried to redirect to potentially insecure url.', E_USER_ERROR);
	}

	if ($return)
	{
		return $url;
	}

	// Redirect via an HTML form for PITA webservers
	if (@preg_match('#Microsoft|WebSTAR|Xitami#', getenv('SERVER_SOFTWARE')))
	{
		header('Refresh: 0; URL=' . $url);

		echo '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">';
		echo '<html xmlns="http://www.w3.org/1999/xhtml" dir="' . $user->lang['DIRECTION'] . '" lang="' . $user->lang['USER_LANG'] . '" xml:lang="' . $user->lang['USER_LANG'] . '">';
		echo '<head>';
		echo '<meta http-equiv="content-type" content="text/html; charset=utf-8" />';
		echo '<meta http-equiv="refresh" content="0; url=' . str_replace('&', '&', $url) . '" />';
		echo '<title>' . $user->lang['REDIRECT'] . '</title>';
		echo '</head>';
		echo '<body>';
		echo '<div style="text-align: center;">' . sprintf($user->lang['URL_REDIRECT'], '<a href="' . str_replace('&', '&', $url) . '">', '</a>') . '</div>';
		echo '</body>';
		echo '</html>';

		exit;
	}

	// Behave as per HTTP/1.1 spec for others
	header('Location: ' . $url);
	exit;
}

/**
* Re-Apply session id after page reloads
*/
function reapply_sid($url)
{
	global $phpEx, $phpbb_root_path;

	if ($url === "index.$phpEx")
	{
		return append_sid("index.$phpEx");
	}
	else if ($url === "{$phpbb_root_path}index.$phpEx")
	{
		return append_sid("{$phpbb_root_path}index.$phpEx");
	}

	// Remove previously added sid
	if (strpos($url, 'sid=') !== false)
	{
		// All kind of links
		$url = preg_replace('/(\?)?(&|&)?sid=[a-z0-9]+/', '', $url);
		// if the sid was the first param, make the old second as first ones
		$url = preg_replace("/$phpEx(&|&)+?/", "$phpEx?", $url);
	}

	return append_sid($url);
}

/**
* Returns url from the session/current page with an re-appended SID with optionally stripping vars from the url
*/
function build_url($strip_vars = false)
{
	global $user, $phpbb_root_path;

	// Append SID
	$redirect = append_sid($user->page['page'], false, false);

	// Add delimiter if not there...
	if (strpos($redirect, '?') === false)
	{
		$redirect .= '?';
	}

	// Strip vars...
	if ($strip_vars !== false && strpos($redirect, '?') !== false)
	{
		if (!is_array($strip_vars))
		{
			$strip_vars = array($strip_vars);
		}

		$query = $_query = array();

		$args = substr($redirect, strpos($redirect, '?') + 1);
		$args = ($args) ? explode('&', $args) : array();
		$redirect = substr($redirect, 0, strpos($redirect, '?'));

		foreach ($args as $argument)
		{
			$arguments = explode('=', $argument);
			$key = $arguments[0];
			unset($arguments[0]);

			$query[$key] = implode('=', $arguments);
		}

		// Strip the vars off
		foreach ($strip_vars as $strip)
		{
			if (isset($query[$strip]))
			{
				unset($query[$strip]);
			}
		}

		// Glue the remaining parts together... already urlencoded
		foreach ($query as $key => $value)
		{
			$_query[] = $key . '=' . $value;
		}
		$query = implode('&', $_query);

		$redirect .= ($query) ? '?' . $query : '';
	}

	// We need to be cautious here.
	// On some situations, the redirect path is an absolute URL, sometimes a relative path
	// For a relative path, let's prefix it with $phpbb_root_path to point to the correct location,
	// else we use the URL directly.
	$url_parts = @parse_url($redirect);

	// URL
	if ($url_parts !== false && !empty($url_parts['scheme']) && !empty($url_parts['host']))
	{
		return str_replace('&', '&', $redirect);
	}

	return $phpbb_root_path . str_replace('&', '&', $redirect);
}

/**
* Meta refresh assignment
* Adds META template variable with meta http tag.
*
* @param int $time Time in seconds for meta refresh tag
* @param string $url URL to redirect to. The url will go through redirect() first before the template variable is assigned
* @param bool $disable_cd_check If true, meta_refresh() will redirect to an external domain. If false, the redirect point to the boards url if it does not match the current domain. Default is false.
*/
function meta_refresh($time, $url, $disable_cd_check = false)
{
	global $template;

	$url = redirect($url, true, $disable_cd_check);
	$url = str_replace('&', '&', $url);

	// For XHTML compatibility we change back & to &
	$template->assign_vars(array(
		'META' => '<meta http-equiv="refresh" content="' . $time . ';url=' . $url . '" />')
	);

	return $url;
}

//Form validation


/**
* Add a secret hash   for use in links/GET requests
* @param string  $link_name The name of the link; has to match the name used in check_link_hash, otherwise no restrictions apply
* @return string the hash

*/
function generate_link_hash($link_name)
{
	global $user;

	if (!isset($user->data["hash_$link_name"]))
	{
		$user->data["hash_$link_name"] = substr(sha1($user->data['user_form_salt'] . $link_name), 0, 8);
	}

	return $user->data["hash_$link_name"];
}


/**
* checks a link hash - for GET requests
* @param string $token the submitted token
* @param string $link_name The name of the link
* @return boolean true if all is fine
*/
function check_link_hash($token, $link_name)
{
	return $token === generate_link_hash($link_name);
}

/**
* Add a secret token to the form (requires the S_FORM_TOKEN template variable)
* @param string  $form_name The name of the form; has to match the name used in check_form_key, otherwise no restrictions apply
*/
function add_form_key($form_name)
{
	global $config, $template, $user;

	$now = time();
	$token_sid = ($user->data['user_id'] == ANONYMOUS && !empty($config['form_token_sid_guests'])) ? $user->session_id : '';
	$token = sha1($now . $user->data['user_form_salt'] . $form_name . $token_sid);

	$s_fields = build_hidden_fields(array(
		'creation_time' => $now,
		'form_token'	=> $token,
	));

	$template->assign_vars(array(
		'S_FORM_TOKEN'	=> $s_fields,
	));
}

/**
* Check the form key. Required for all altering actions not secured by confirm_box
* @param string  $form_name The name of the form; has to match the name used in add_form_key, otherwise no restrictions apply
* @param int $timespan The maximum acceptable age for a submitted form in seconds. Defaults to the config setting.
* @param string $return_page The address for the return link
* @param bool $trigger If true, the function will triger an error when encountering an invalid form
*/
function check_form_key($form_name, $timespan = false, $return_page = '', $trigger = false)
{
	global $config, $user;

	if ($timespan === false)
	{
		// we enforce a minimum value of half a minute here.
		$timespan = ($config['form_token_lifetime'] == -1) ? -1 : max(30, $config['form_token_lifetime']);
	}

	if (isset($_POST['creation_time']) && isset($_POST['form_token']))
	{
		$creation_time	= abs(request_var('creation_time', 0));
		$token = request_var('form_token', '');

		$diff = time() - $creation_time;

		// If creation_time and the time() now is zero we can assume it was not a human doing this (the check for if ($diff)...
		if ($diff && ($diff <= $timespan || $timespan === -1))
		{
			$token_sid = ($user->data['user_id'] == ANONYMOUS && !empty($config['form_token_sid_guests'])) ? $user->session_id : '';
			$key = sha1($creation_time . $user->data['user_form_salt'] . $form_name . $token_sid);

			if ($key === $token)
			{
				return true;
			}
		}
	}

	if ($trigger)
	{
		trigger_error($user->lang['FORM_INVALID'] . $return_page);
	}

	return false;
}

// Message/Login boxes

/**
* Build Confirm box
* @param boolean $check True for checking if confirmed (without any additional parameters) and false for displaying the confirm box
* @param string $title Title/Message used for confirm box.
*		message text is _CONFIRM appended to title.
*		If title cannot be found in user->lang a default one is displayed
*		If title_CONFIRM cannot be found in user->lang the text given is used.
* @param string $hidden Hidden variables
* @param string $html_body Template used for confirm box
* @param string $u_action Custom form action
*/
function confirm_box($check, $title = '', $hidden = '', $html_body = 'confirm_body.html', $u_action = '')
{
	global $user, $template, $db;
	global $phpEx, $phpbb_root_path;

	if (isset($_POST['cancel']))
	{
		return false;
	}

	$confirm = false;
	if (isset($_POST['confirm']))
	{
		// language frontier
		if ($_POST['confirm'] === $user->lang['YES'])
		{
			$confirm = true;
		}
	}

	if ($check && $confirm)
	{
		$user_id = request_var('confirm_uid', 0);
		$session_id = request_var('sess', '');
		$confirm_key = request_var('confirm_key', '');

		if ($user_id != $user->data['user_id'] || $session_id != $user->session_id || !$confirm_key || !$user->data['user_last_confirm_key'] || $confirm_key != $user->data['user_last_confirm_key'])
		{
			return false;
		}

		// Reset user_last_confirm_key
		$sql = 'UPDATE ' . USERS_TABLE . " SET user_last_confirm_key = ''
			WHERE user_id = " . $user->data['user_id'];
		$db->sql_query($sql);

		return true;
	}
	else if ($check)
	{
		return false;
	}

	$s_hidden_fields = build_hidden_fields(array(
		'confirm_uid'	=> $user->data['user_id'],
		'sess'			=> $user->session_id,
		'sid'			=> $user->session_id,
	));

	// generate activation key
	$confirm_key = gen_rand_string(10);

	if (defined('IN_ADMIN') && isset($user->data['session_admin']) && $user->data['session_admin'])
	{
		adm_page_header((!isset($user->lang[$title])) ? $user->lang['CONFIRM'] : $user->lang[$title]);
	}
	else
	{
		page_header(((!isset($user->lang[$title])) ? $user->lang['CONFIRM'] : $user->lang[$title]), false);
	}

	$template->set_filenames(array(
		'body' => $html_body)
	);

	// If activation key already exist, we better do not re-use the key (something very strange is going on...)
	if (request_var('confirm_key', ''))
	{
		// This should not occur, therefore we cancel the operation to safe the user
		return false;
	}

	// re-add sid / transform & to & for user->page (user->page is always using &)
	$use_page = ($u_action) ? $phpbb_root_path . $u_action : $phpbb_root_path . str_replace('&', '&', $user->page['page']);
	$u_action = reapply_sid($use_page);
	$u_action .= ((strpos($u_action, '?') === false) ? '?' : '&') . 'confirm_key=' . $confirm_key;

	$template->assign_vars(array(
		'MESSAGE_TITLE'		=> (!isset($user->lang[$title])) ? $user->lang['CONFIRM'] : $user->lang[$title],
		'MESSAGE_TEXT'		=> (!isset($user->lang[$title . '_CONFIRM'])) ? $title : $user->lang[$title . '_CONFIRM'],

		'YES_VALUE'			=> $user->lang['YES'],
		'S_CONFIRM_ACTION'	=> $u_action,
		'S_HIDDEN_FIELDS'	=> $hidden . $s_hidden_fields)
	);

	$sql = 'UPDATE ' . USERS_TABLE . " SET user_last_confirm_key = '" . $db->sql_escape($confirm_key) . "'
		WHERE user_id = " . $user->data['user_id'];
	$db->sql_query($sql);

	if (defined('IN_ADMIN') && isset($user->data['session_admin']) && $user->data['session_admin'])
	{
		adm_page_footer();
	}
	else
	{
		page_footer();
	}
}

/**
* Generate login box or verify password
*/
function login_box($redirect = '', $l_explain = '', $l_success = '', $admin = false, $s_display = true)
{
	global $db, $user, $template, $auth, $phpEx, $phpbb_root_path, $config;

	if (!class_exists('phpbb_captcha_factory'))
	{
		include($phpbb_root_path . 'includes/captcha/captcha_factory.' . $phpEx);
	}

	$err = '';

	// Make sure user->setup() has been called
	if (empty($user->lang))
	{
		$user->setup();
	}

	// Print out error if user tries to authenticate as an administrator without having the privileges...
	if ($admin && !$auth->acl_get('a_'))
	{
		// Not authd
		// anonymous/inactive users are never able to go to the ACP even if they have the relevant permissions
		if ($user->data['is_registered'])
		{
			add_log('admin', 'LOG_ADMIN_AUTH_FAIL');
		}
		trigger_error('NO_AUTH_ADMIN');
	}

	if (isset($_POST['login']))
	{
		// Get credential
		if ($admin)
		{
			$credential = request_var('credential', '');

			if (strspn($credential, 'abcdef0123456789') !== strlen($credential) || strlen($credential) != 32)
			{
				if ($user->data['is_registered'])
				{
					add_log('admin', 'LOG_ADMIN_AUTH_FAIL');
				}
				trigger_error('NO_AUTH_ADMIN');
			}

			$password	= request_var('password_' . $credential, '', true);
		}
		else
		{
			$password	= request_var('password', '', true);
		}

		$username	= request_var('username', '', true);
		$autologin	= (!empty($_POST['autologin'])) ? true : false;
		$viewonline = (!empty($_POST['viewonline'])) ? 0 : 1;
		$admin 		= ($admin) ? 1 : 0;
		$viewonline = ($admin) ? $user->data['session_viewonline'] : $viewonline;

		// Check if the supplied username is equal to the one stored within the database if re-authenticating
		if ($admin && utf8_clean_string($username) != utf8_clean_string($user->data['username']))
		{
			// We log the attempt to use a different username...
			add_log('admin', 'LOG_ADMIN_AUTH_FAIL');
			trigger_error('NO_AUTH_ADMIN_USER_DIFFER');
		}

		// If authentication is successful we redirect user to previous page
		$result = $auth->login($username, $password, $autologin, $viewonline, $admin);

		// If admin authentication and login, we will log if it was a success or not...
		// We also break the operation on the first non-success login - it could be argued that the user already knows
		if ($admin)
		{
			if ($result['status'] == LOGIN_SUCCESS)
			{
				add_log('admin', 'LOG_ADMIN_AUTH_SUCCESS');
			}
			else
			{
				// Only log the failed attempt if a real user tried to.
				// anonymous/inactive users are never able to go to the ACP even if they have the relevant permissions
				if ($user->data['is_registered'])
				{
					add_log('admin', 'LOG_ADMIN_AUTH_FAIL');
				}
			}
		}

		// The result parameter is always an array, holding the relevant information...
		if ($result['status'] == LOGIN_SUCCESS)
		{
			$redirect = request_var('redirect', "{$phpbb_root_path}index.$phpEx");
			$message = ($l_success) ? $l_success : $user->lang['LOGIN_REDIRECT'];
			$l_redirect = ($admin) ? $user->lang['PROCEED_TO_ACP'] : (($redirect === "{$phpbb_root_path}index.$phpEx" || $redirect === "index.$phpEx") ? $user->lang['RETURN_INDEX'] : $user->lang['RETURN_PAGE']);

			// append/replace SID (may change during the session for AOL users)
			$redirect = reapply_sid($redirect);

			// Special case... the user is effectively banned, but we allow founders to login
			if (defined('IN_CHECK_BAN') && $result['user_row']['user_type'] != USER_FOUNDER)
			{
				return;
			}

			$redirect = meta_refresh(3, $redirect);
			trigger_error($message . '<br /><br />' . sprintf($l_redirect, '<a href="' . $redirect . '">', '</a>'));
		}

		// Something failed, determine what...
		if ($result['status'] == LOGIN_BREAK)
		{
			trigger_error($result['error_msg']);
		}

		// Special cases... determine
		switch ($result['status'])
		{
			case LOGIN_ERROR_ATTEMPTS:

				$captcha = phpbb_captcha_factory::get_instance($config['captcha_plugin']);
				$captcha->init(CONFIRM_LOGIN);
				// $captcha->reset();

				$template->assign_vars(array(
					'CAPTCHA_TEMPLATE'			=> $captcha->get_template(),
				));

				$err = $user->lang[$result['error_msg']];
			break;

			case LOGIN_ERROR_PASSWORD_CONVERT:
				$err = sprintf(
					$user->lang[$result['error_msg']],
					($config['email_enable']) ? '<a href="' . append_sid("{$phpbb_root_path}ucp.$phpEx", 'mode=sendpassword') . '">' : '',
					($config['email_enable']) ? '</a>' : '',
					($config['board_contact']) ? '<a href="mailto:' . htmlspecialchars($config['board_contact']) . '">' : '',
					($config['board_contact']) ? '</a>' : ''
				);
			break;

			// Username, password, etc...
			default:
				$err = $user->lang[$result['error_msg']];

				// Assign admin contact to some error messages
				if ($result['error_msg'] == 'LOGIN_ERROR_USERNAME' || $result['error_msg'] == 'LOGIN_ERROR_PASSWORD')
				{
					$err = (!$config['board_contact']) ? sprintf($user->lang[$result['error_msg']], '', '') : sprintf($user->lang[$result['error_msg']], '<a href="mailto:' . htmlspecialchars($config['board_contact']) . '">', '</a>');
				}

			break;
		}
	}

	// Assign credential for username/password pair
	$credential = ($admin) ? md5(unique_id()) : false;

	$s_hidden_fields = array(
		'sid'		=> $user->session_id,
	);

	if ($redirect)
	{
		$s_hidden_fields['redirect'] = $redirect;
	}

	if ($admin)
	{
		$s_hidden_fields['credential'] = $credential;
	}

	$s_hidden_fields = build_hidden_fields($s_hidden_fields);

	$template->assign_vars(array(
		'LOGIN_ERROR'		=> $err,
		'LOGIN_EXPLAIN'		=> $l_explain,

		'U_SEND_PASSWORD' 		=> ($config['email_enable']) ? append_sid("{$phpbb_root_path}ucp.$phpEx", 'mode=sendpassword') : '',
		'U_RESEND_ACTIVATION'	=> ($config['require_activation'] == USER_ACTIVATION_SELF && $config['email_enable']) ? append_sid("{$phpbb_root_path}ucp.$phpEx", 'mode=resend_act') : '',
		'U_TERMS_USE'			=> append_sid("{$phpbb_root_path}ucp.$phpEx", 'mode=terms'),
		'U_PRIVACY'				=> append_sid("{$phpbb_root_path}ucp.$phpEx", 'mode=privacy'),

		'S_DISPLAY_FULL_LOGIN'	=> ($s_display) ? true : false,
		'S_HIDDEN_FIELDS' 		=> $s_hidden_fields,

		'S_ADMIN_AUTH'			=> $admin,
		'USERNAME'				=> ($admin) ? $user->data['username'] : '',

		'USERNAME_CREDENTIAL'	=> 'username',
		'PASSWORD_CREDENTIAL'	=> ($admin) ? 'password_' . $credential : 'password',
	));

	page_header($user->lang['LOGIN'], false);

	$template->set_filenames(array(
		'body' => 'login_body.html')
	);
	make_jumpbox(append_sid("{$phpbb_root_path}viewforum.$phpEx"));

	page_footer();
}

/**
* Generate forum login box
*/
function login_forum_box($forum_data)
{
	global $db, $config, $user, $template, $phpEx;

	$password = request_var('password', '', true);

	$sql = 'SELECT forum_id
		FROM ' . FORUMS_ACCESS_TABLE . '
		WHERE forum_id = ' . $forum_data['forum_id'] . '
			AND user_id = ' . $user->data['user_id'] . "
			AND session_id = '" . $db->sql_escape($user->session_id) . "'";
	$result = $db->sql_query($sql);
	$row = $db->sql_fetchrow($result);
	$db->sql_freeresult($result);

	if ($row)
	{
		return true;
	}

	if ($password)
	{
		// Remove expired authorised sessions
		$sql = 'SELECT f.session_id
			FROM ' . FORUMS_ACCESS_TABLE . ' f
			LEFT JOIN ' . SESSIONS_TABLE . ' s ON (f.session_id = s.session_id)
			WHERE s.session_id IS NULL';
		$result = $db->sql_query($sql);

		if ($row = $db->sql_fetchrow($result))
		{
			$sql_in = array();
			do
			{
				$sql_in[] = (string) $row['session_id'];
			}
			while ($row = $db->sql_fetchrow($result));

			// Remove expired sessions
			$sql = 'DELETE FROM ' . FORUMS_ACCESS_TABLE . '
				WHERE ' . $db->sql_in_set('session_id', $sql_in);
			$db->sql_query($sql);
		}
		$db->sql_freeresult($result);

		if (phpbb_check_hash($password, $forum_data['forum_password']))
		{
			$sql_ary = array(
				'forum_id'		=> (int) $forum_data['forum_id'],
				'user_id'		=> (int) $user->data['user_id'],
				'session_id'	=> (string) $user->session_id,
			);

			$db->sql_query('INSERT INTO ' . FORUMS_ACCESS_TABLE . ' ' . $db->sql_build_array('INSERT', $sql_ary));

			return true;
		}

		$template->assign_var('LOGIN_ERROR', $user->lang['WRONG_PASSWORD']);
	}

	page_header($user->lang['LOGIN'], false);

	$template->assign_vars(array(
		'S_LOGIN_ACTION'		=> build_url(array('f')),
		'S_HIDDEN_FIELDS'		=> build_hidden_fields(array('f' => $forum_data['forum_id'])))
	);

	$template->set_filenames(array(
		'body' => 'login_forum.html')
	);

	page_footer();
}

// Little helpers

/**
* Little helper for the build_hidden_fields function
*/
function _build_hidden_fields($key, $value, $specialchar, $stripslashes)
{
	$hidden_fields = '';

	if (!is_array($value))
	{
		$value = ($stripslashes) ? stripslashes($value) : $value;
		$value = ($specialchar) ? htmlspecialchars($value, ENT_COMPAT, 'UTF-8') : $value;

		$hidden_fields .= '<input type="hidden" name="' . $key . '" value="' . $value . '" />' . "\n";
	}
	else
	{
		foreach ($value as $_key => $_value)
		{
			$_key = ($stripslashes) ? stripslashes($_key) : $_key;
			$_key = ($specialchar) ? htmlspecialchars($_key, ENT_COMPAT, 'UTF-8') : $_key;

			$hidden_fields .= _build_hidden_fields($key . '[' . $_key . ']', $_value, $specialchar, $stripslashes);
		}
	}

	return $hidden_fields;
}

/**
* Build simple hidden fields from array
*
* @param array $field_ary an array of values to build the hidden field from
* @param bool $specialchar if true, keys and values get specialchared
* @param bool $stripslashes if true, keys and values get stripslashed
*
* @return string the hidden fields
*/
function build_hidden_fields($field_ary, $specialchar = false, $stripslashes = false)
{
	$s_hidden_fields = '';

	foreach ($field_ary as $name => $vars)
	{
		$name = ($stripslashes) ? stripslashes($name) : $name;
		$name = ($specialchar) ? htmlspecialchars($name, ENT_COMPAT, 'UTF-8') : $name;

		$s_hidden_fields .= _build_hidden_fields($name, $vars, $specialchar, $stripslashes);
	}

	return $s_hidden_fields;
}

/**
* Parse cfg file
*/
function parse_cfg_file($filename, $lines = false)
{
	$parsed_items = array();

	if ($lines === false)
	{
		$lines = file($filename);
	}

	foreach ($lines as $line)
	{
		$line = trim($line);

		if (!$line || $line[0] == '#' || ($delim_pos = strpos($line, '=')) === false)
		{
			continue;
		}

		// Determine first occurrence, since in values the equal sign is allowed
		$key = strtolower(trim(substr($line, 0, $delim_pos)));
		$value = trim(substr($line, $delim_pos + 1));

		if (in_array($value, array('off', 'false', '0')))
		{
			$value = false;
		}
		else if (in_array($value, array('on', 'true', '1')))
		{
			$value = true;
		}
		else if (!trim($value))
		{
			$value = '%3';
		}
		else if (($value[0] == "'" && $value[sizeof($value) - 1] == "'") || ($value[0] == '"' && $value[sizeof($value) - 1] == '"'))
		{
			$value = substr($value, 1, sizeof($value)-2);
		}

		$parsed_items[$key] = $value;
	}

	return $parsed_items;
}

/**
* Add log event
*/
function add_log()
{
	global $db, $user;

	// In phpBB 3.1.x i want to have logging in a class to be able to control it
	// For now, we need a quite hakish approach to circumvent logging for some actions
	// @todo implement cleanly
	if (!empty($GLOBALS['skip_add_log']))
	{
		return false;
	}

	$args = func_get_args();

	$mode			= array_shift($args);
	$reportee_id	= ($mode == 'user') ? intval(array_shift($args)) : '';
	$forum_id		= ($mode == 'mod') ? intval(array_shift($args)) : '';
	$topic_id		= ($mode == 'mod') ? intval(array_shift($args)) : '';
	$action			= array_shift($args);
	$data			= (!sizeof($args)) ? '' : serialize($args);

	$sql_ary = array(
		'user_id'		=> (empty($user->data)) ? ANONYMOUS : $user->data['user_id'],
		'log_ip'		=> $user->ip,
		'log_time'		=> time(),
		'log_operation'	=> $action,
		'log_data'		=> $data,
	);

	switch ($mode)
	{
		case 'admin':
			$sql_ary['log_type'] = LOG_ADMIN;
		break;

		case 'mod':
			$sql_ary += array(
				'log_type'	=> LOG_MOD,
				'forum_id'	=> $forum_id,
				'topic_id'	=> $topic_id
			);
		break;

		case 'user':
			$sql_ary += array(
				'log_type'		=> LOG_USERS,
				'reportee_id'	=> $reportee_id
			);
		break;

		case 'critical':
			$sql_ary['log_type'] = LOG_CRITICAL;
		break;

		default:
			return false;
	}

	$db->sql_query('INSERT INTO ' . LOG_TABLE . ' ' . $db->sql_build_array('INSERT', $sql_ary));

	return $db->sql_nextid();
}

/**
* Return a nicely formatted backtrace (parts from the php manual by diz at ysagoon dot com)
*/
function get_backtrace()
{
	global $phpbb_root_path;

	$output = '<div style="font-family: monospace;">';
	$backtrace = debug_backtrace();
	$path = phpbb_realpath($phpbb_root_path);

	foreach ($backtrace as $number => $trace)
	{
		// We skip the first one, because it only shows this file/function
		if ($number == 0)
		{
			continue;
		}

		// Strip the current directory from path
		if (empty($trace['file']))
		{
			$trace['file'] = '';
		}
		else
		{
			$trace['file'] = str_replace(array($path, '\\'), array('', '/'), $trace['file']);
			$trace['file'] = substr($trace['file'], 1);
		}
		$args = array();

		// If include/require/include_once is not called, do not show arguments - they may contain sensible information
		if (!in_array($trace['function'], array('include', 'require', 'include_once')))
		{
			unset($trace['args']);
		}
		else
		{
			// Path...
			if (!empty($trace['args'][0]))
			{
				$argument = htmlspecialchars($trace['args'][0]);
				$argument = str_replace(array($path, '\\'), array('', '/'), $argument);
				$argument = substr($argument, 1);
				$args[] = "'{$argument}'";
			}
		}

		$trace['class'] = (!isset($trace['class'])) ? '' : $trace['class'];
		$trace['type'] = (!isset($trace['type'])) ? '' : $trace['type'];

		$output .= '<br />';
		$output .= '<b>FILE:</b> ' . htmlspecialchars($trace['file']) . '<br />';
		$output .= '<b>LINE:</b> ' . ((!empty($trace['line'])) ? $trace['line'] : '') . '<br />';

		$output .= '<b>CALL:</b> ' . htmlspecialchars($trace['class'] . $trace['type'] . $trace['function']) . '(' . ((sizeof($args)) ? implode(', ', $args) : '') . ')<br />';
	}
	$output .= '</div>';
	return $output;
}

/**
* This function returns a regular expression pattern for commonly used expressions
* Use with / as delimiter for email mode and # for url modes
* mode can be: email|bbcode_htm|url|url_inline|www_url|www_url_inline|relative_url|relative_url_inline|ipv4|ipv6
*/
function get_preg_expression($mode)
{
	switch ($mode)
	{
		case 'email':
			return '(?:[a-z0-9\'\.\-_\+\|]++|&)+@[a-z0-9\-]+\.(?:[a-z0-9\-]+\.)*[a-z]+';
		break;

		case 'bbcode_htm':
			return array(
				'#<!\-\- e \-\-><a href="mailto:(.*?)">.*?</a><!\-\- e \-\->#',
				'#<!\-\- l \-\-><a (?:class="[\w-]+" )?href="(.*?)(?:(&|\?)sid=[0-9a-f]{32})?">.*?</a><!\-\- l \-\->#',
				'#<!\-\- ([mw]) \-\-><a (?:class="[\w-]+" )?href="(.*?)">.*?</a><!\-\- \1 \-\->#',
				'#<!\-\- s(.*?) \-\-><img src="\{SMILIES_PATH\}\/.*? \/><!\-\- s\1 \-\->#',
				'#<!\-\- .*? \-\->
				#s',				'#<.*/**#s',
			);
		break;

		// Whoa these look impressive!
		// The code to generate the following two regular expressions which match valid IPv4/IPv6 addresses
		// can be found in the develop directory
		case 'ipv4':
			return '#^(?:(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.){3}(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])$#';
		break;

		case 'ipv6':
			return '#^(?:(?:(?:[\dA-F]{1,4}:){6}(?:[\dA-F]{1,4}:[\dA-F]{1,4}|(?:(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.){3}(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])))|(?:::(?:[\dA-F]{1,4}:){5}(?:[\dA-F]{1,4}:[\dA-F]{1,4}|(?:(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.){3}(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])))|(?:(?:[\dA-F]{1,4}:):(?:[\dA-F]{1,4}:){4}(?:[\dA-F]{1,4}:[\dA-F]{1,4}|(?:(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.){3}(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])))|(?:(?:[\dA-F]{1,4}:){1,2}:(?:[\dA-F]{1,4}:){3}(?:[\dA-F]{1,4}:[\dA-F]{1,4}|(?:(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.){3}(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])))|(?:(?:[\dA-F]{1,4}:){1,3}:(?:[\dA-F]{1,4}:){2}(?:[\dA-F]{1,4}:[\dA-F]{1,4}|(?:(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.){3}(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])))|(?:(?:[\dA-F]{1,4}:){1,4}:(?:[\dA-F]{1,4}:)(?:[\dA-F]{1,4}:[\dA-F]{1,4}|(?:(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.){3}(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])))|(?:(?:[\dA-F]{1,4}:){1,5}:(?:[\dA-F]{1,4}:[\dA-F]{1,4}|(?:(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.){3}(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])))|(?:(?:[\dA-F]{1,4}:){1,6}:[\dA-F]{1,4})|(?:(?:[\dA-F]{1,4}:){1,7}:))$#i';
		break;

		case 'url':
		case 'url_inline':
			$inline = ($mode == 'url') ? ')' : '';
			$scheme = ($mode == 'url') ? '[a-z\d+\-.]' : '[a-z\d+]'; // avoid automatic parsing of "word" in "last word.http://...
			// generated with regex generation file in the develop folder
			return "[a-z]$scheme*:/{2}(?:(?:[a-z0-9\-._~!$&'($inline*+,;=:@|]+|%[\dA-F]{2})+|[0-9.]+|\[[a-z0-9.]+:[a-z0-9.]+:[a-z0-9.:]+\])(?::\d*)?(?:/(?:[a-z0-9\-._~!$&'($inline*+,;=:@|]+|%[\dA-F]{2})*)*(?:\?(?:[a-z0-9\-._~!$&'($inline*+,;=:@/?|]+|%[\dA-F]{2})*)?(?:\#(?:[a-z0-9\-._~!$&'($inline*+,;=:@/?|]+|%[\dA-F]{2})*)?";
		break;

		case 'www_url':
		case 'www_url_inline':
			$inline = ($mode == 'www_url') ? ')' : '';
			return "www\.(?:[a-z0-9\-._~!$&'($inline*+,;=:@|]+|%[\dA-F]{2})+(?::\d*)?(?:/(?:[a-z0-9\-._~!$&'($inline*+,;=:@|]+|%[\dA-F]{2})*)*(?:\?(?:[a-z0-9\-._~!$&'($inline*+,;=:@/?|]+|%[\dA-F]{2})*)?(?:\#(?:[a-z0-9\-._~!$&'($inline*+,;=:@/?|]+|%[\dA-F]{2})*)?";
		break;

		case 'relative_url':
		case 'relative_url_inline':
			$inline = ($mode == 'relative_url') ? ')' : '';
			return "(?:[a-z0-9\-._~!$&'($inline*+,;=:@|]+|%[\dA-F]{2})*(?:/(?:[a-z0-9\-._~!$&'($inline*+,;=:@|]+|%[\dA-F]{2})*)*(?:\?(?:[a-z0-9\-._~!$&'($inline*+,;=:@/?|]+|%[\dA-F]{2})*)?(?:\#(?:[a-z0-9\-._~!$&'($inline*+,;=:@/?|]+|%[\dA-F]{2})*)?";
		break;
	}

	return '';
}

/**
* Returns the first block of the specified IPv6 address and as many additional
* ones as specified in the length paramater.
* If length is zero, then an empty string is returned.
* If length is greater than 3 the complete IP will be returned
*/
function short_ipv6($ip, $length)
{
	if ($length < 1)
	{
		return '';
	}

	// extend IPv6 addresses
	$blocks = substr_count($ip, ':') + 1;
	if ($blocks < 9)
	{
		$ip = str_replace('::', ':' . str_repeat('0000:', 9 - $blocks), $ip);
	}
	if ($ip[0] == ':')
	{
		$ip = '0000' . $ip;
	}
	if ($length < 4)
	{
		$ip = implode(':', array_slice(explode(':', $ip), 0, 1 + $length));
	}

	return $ip;
}

/**
* Wrapper for php's checkdnsrr function.
*
* The windows failover is from the php manual
* Please make sure to check the return value for === true and === false, since NULL could
* be returned too.
*
* @return true if entry found, false if not, NULL if this function is not supported by this environment
*/
function phpbb_checkdnsrr($host, $type = '')
{
	$type = (!$type) ? 'MX' : $type;

	if (DIRECTORY_SEPARATOR == '\\')
	{
		if (!function_exists('exec'))
		{
			return NULL;
		}

		// @exec('nslookup -retry=1 -timout=1 -type=' . escapeshellarg($type) . ' ' . escapeshellarg($host), $output);
		@exec('nslookup -type=' . escapeshellarg($type) . ' ' . escapeshellarg($host) . '.', $output);

		// If output is empty, the nslookup failed
		if (empty($output))
		{
			return NULL;
		}

		foreach ($output as $line)
		{
			if (!trim($line))
			{
				continue;
			}

			// Valid records begin with host name:
			if (strpos($line, $host) === 0)
			{
				return true;
			}
		}

		return false;
	}
	else if (function_exists('checkdnsrr'))
	{
		// The dot indicates to search the DNS root (helps those having DNS prefixes on the same domain)
		return (checkdnsrr($host . '.', $type)) ? true : false;
	}

	return NULL;
}

// Handler, header and footer

/**
* Error and message handler, call with trigger_error if reqd
*/
function msg_handler($errno, $msg_text, $errfile, $errline)
{
	global $cache, $db, $auth, $template, $config, $user;
	global $phpEx, $phpbb_root_path, $msg_title, $msg_long_text;

	// Do not display notices if we suppress them via @
	if (error_reporting() == 0 && $errno != E_USER_ERROR && $errno != E_USER_WARNING && $errno != E_USER_NOTICE)
	{
		return;
	}

	// Message handler is stripping text. In case we need it, we are possible to define long text...
	if (isset($msg_long_text) && $msg_long_text && !$msg_text)
	{
		$msg_text = $msg_long_text;
	}

	if (!defined('E_DEPRECATED'))
	{
		define('E_DEPRECATED', 8192);
	}

	switch ($errno)
	{
		case E_NOTICE:
		case E_WARNING:

			// Check the error reporting level and return if the error level does not match
			// If DEBUG is defined the default level is E_ALL
			if (($errno & ((defined('DEBUG')) ? E_ALL : error_reporting())) == 0)
			{
				return;
			}

			if (strpos($errfile, 'cache') === false && strpos($errfile, 'template.') === false)
			{
				// flush the content, else we get a white page if output buffering is on
				if ((int) @ini_get('output_buffering') === 1 || strtolower(@ini_get('output_buffering')) === 'on')
				{
					@ob_flush();
				}

				// Another quick fix for those having gzip compression enabled, but do not flush if the coder wants to catch "something". ;)
				if (!empty($config['gzip_compress']))
				{
					if (@extension_loaded('zlib') && !headers_sent() && !ob_get_level())
					{
						@ob_flush();
					}
				}

				// remove complete path to installation, with the risk of changing backslashes meant to be there
				$errfile = str_replace(array(phpbb_realpath($phpbb_root_path), '\\'), array('', '/'), $errfile);
				$msg_text = str_replace(array(phpbb_realpath($phpbb_root_path), '\\'), array('', '/'), $msg_text);
				echo '<b>[phpBB Debug] PHP Notice</b>: in file <b>' . $errfile . '</b> on line <b>' . $errline . '</b>: <b>' . $msg_text . '</b><br />' . "\n";

				// we are writing an image - the user won't see the debug, so let's place it in the log
				if (defined('IMAGE_OUTPUT') || defined('IN_CRON'))
				{
					add_log('critical', 'LOG_IMAGE_GENERATION_ERROR', $errfile, $errline, $msg_text);
				}
				// echo '<br /><br />BACKTRACE<br />' . get_backtrace() . '<br />' . "\n";
			}

			return;

		break;

		case E_USER_ERROR:

			if (!empty($user) && !empty($user->lang))
			{
				$msg_text = (!empty($user->lang[$msg_text])) ? $user->lang[$msg_text] : $msg_text;
				$msg_title = (!isset($msg_title)) ? $user->lang['GENERAL_ERROR'] : ((!empty($user->lang[$msg_title])) ? $user->lang[$msg_title] : $msg_title);

				$l_return_index = sprintf($user->lang['RETURN_INDEX'], '<a href="' . $phpbb_root_path . '">', '</a>');
				$l_notify = '';

				if (!empty($config['board_contact']))
				{
					$l_notify = '<p>' . sprintf($user->lang['NOTIFY_ADMIN_EMAIL'], $config['board_contact']) . '</p>';
				}
			}
			else
			{
				$msg_title = 'General Error';
				$l_return_index = '<a href="' . $phpbb_root_path . '">Return to index page</a>';
				$l_notify = '';

				if (!empty($config['board_contact']))
				{
					$l_notify = '<p>Please notify the board administrator or webmaster: <a href="mailto:' . $config['board_contact'] . '">' . $config['board_contact'] . '</a></p>';
				}
			}

			if (defined('DEBUG') || defined('IN_CRON') || defined('IMAGE_OUTPUT'))
			{
				// let's avoid loops
				$db->sql_return_on_error(true);
				add_log('critical', 'LOG_GENERAL_ERROR', $msg_title, $msg_text);
				$db->sql_return_on_error(false);
			}

			// Do not send 200 OK, but service unavailable on errors
			header('HTTP/1.1 503 Service Unavailable');

			garbage_collection();

			// Try to not call the adm page data...

			echo '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">';
			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>' . $msg_title . '</title>';
			echo '<style type="text/css">' . "\n" . '/* <![CDATA[ */' . "\n";
			echo '* { margin: 0; padding: 0; } html { font-size: 100%; height: 100%; margin-bottom: 1px; background-color: #E4EDF0; } body { font-family: "Lucida Grande", Verdana, Helvetica, Arial, sans-serif; color: #536482; background: #E4EDF0; font-size: 62.5%; margin: 0; } ';
			echo 'a:link, a:active, a:visited { color: #006699; text-decoration: none; } a:hover { color: #DD6900; text-decoration: underline; } ';
			echo '#wrap { padding: 0 20px 15px 20px; min-width: 615px; } #page-header { text-align: right; height: 40px; } #page-footer { clear: both; font-size: 1em; text-align: center; } ';
			echo '.panel { margin: 4px 0; background-color: #FFFFFF; border: solid 1px  #A9B8C2; } ';
			echo '#errorpage #page-header a { font-weight: bold; line-height: 6em; } #errorpage #content { padding: 10px; } #errorpage #content h1 { line-height: 1.2em; margin-bottom: 0; color: #DF075C; } ';
			echo '#errorpage #content div { margin-top: 20px; margin-bottom: 5px; border-bottom: 1px solid #CCCCCC; padding-bottom: 5px; color: #333333; font: bold 1.2em "Lucida Grande", Arial, Helvetica, sans-serif; text-decoration: none; line-height: 120%; text-align: left; } ';
			echo "\n" . '/* ]]> */' . "\n";
			echo '</style>';
			echo '</head>';
			echo '<body id="errorpage">';
			echo '<div id="wrap">';
			echo '	<div id="page-header">';
			echo '		' . $l_return_index;
			echo '	</div>';
			echo '	<div id="acp">';
			echo '	<div class="panel">';
			echo '		<div id="content">';
			echo '			<h1>' . $msg_title . '</h1>';

			echo '			<div>' . $msg_text . '</div>';

			echo $l_notify;

			echo '		</div>';
			echo '	</div>';
			echo '	</div>';
			echo '	<div id="page-footer">';
			echo '		Powered by phpBB &copy; 2000, 2002, 2005, 2007 <a href="http://www.phpbb.com/">phpBB Group</a>';
			echo '	</div>';
			echo '</div>';
			echo '</body>';
			echo '</html>';

			exit_handler();

			// On a fatal error (and E_USER_ERROR *is* fatal) we never want other scripts to continue and force an exit here.
			exit;
		break;

		case E_USER_WARNING:
		case E_USER_NOTICE:

			define('IN_ERROR_HANDLER', true);

			if (empty($user->data))
			{
				$user->session_begin();
			}

			// We re-init the auth array to get correct results on login/logout
			$auth->acl($user->data);

			if (empty($user->lang))
			{
				$user->setup();
			}

			$msg_text = (!empty($user->lang[$msg_text])) ? $user->lang[$msg_text] : $msg_text;
			$msg_title = (!isset($msg_title)) ? $user->lang['INFORMATION'] : ((!empty($user->lang[$msg_title])) ? $user->lang[$msg_title] : $msg_title);

			if (!defined('HEADER_INC'))
			{
				if (defined('IN_ADMIN') && isset($user->data['session_admin']) && $user->data['session_admin'])
				{
					adm_page_header($msg_title);
				}
				else
				{
					page_header($msg_title, false);
				}
			}

			$template->set_filenames(array(
				'body' => 'message_body.html')
			);

			$template->assign_vars(array(
				'MESSAGE_TITLE'		=> $msg_title,
				'MESSAGE_TEXT'		=> $msg_text,
				'S_USER_WARNING'	=> ($errno == E_USER_WARNING) ? true : false,
				'S_USER_NOTICE'		=> ($errno == E_USER_NOTICE) ? true : false)
			);

			// We do not want the cron script to be called on error messages
			define('IN_CRON', true);

			if (defined('IN_ADMIN') && isset($user->data['session_admin']) && $user->data['session_admin'])
			{
				adm_page_footer();
			}
			else
			{
				page_footer();
			}

			exit_handler();
		break;

		// PHP4 compatibility
		case E_DEPRECATED:
			return true;
		break;
	}

	// If we notice an error not handled here we pass this back to PHP by returning false
	// This may not work for all php versions
	return false;
}

/**
* Queries the session table to get information about online guests
* @param int $item_id Limits the search to the item with this id
* @param string $item The name of the item which is stored in the session table as session_{$item}_id
* @return int The number of active distinct guest sessions
*/
function obtain_guest_count($item_id = 0, $item = 'forum')
{
	global $db, $config;

	if ($item_id)
	{
		$reading_sql = ' AND s.session_' . $item . '_id = ' . (int) $item_id;
	}
	else
	{
		$reading_sql = '';
	}
	$time = (time() - (intval($config['load_online_time']) * 60));

	// Get number of online guests

	if ($db->sql_layer === 'sqlite')
	{
		$sql = 'SELECT COUNT(session_ip) as num_guests
			FROM (
				SELECT DISTINCT s.session_ip
				FROM ' . SESSIONS_TABLE . ' s
				WHERE s.session_user_id = ' . ANONYMOUS . '
					AND s.session_time >= ' . ($time - ((int) ($time % 60))) .
				$reading_sql .
			')';
	}
	else
	{
		$sql = 'SELECT COUNT(DISTINCT s.session_ip) as num_guests
			FROM ' . SESSIONS_TABLE . ' s
			WHERE s.session_user_id = ' . ANONYMOUS . '
				AND s.session_time >= ' . ($time - ((int) ($time % 60))) .
			$reading_sql;
	}
	$result = $db->sql_query($sql);
	$guests_online = (int) $db->sql_fetchfield('num_guests');
	$db->sql_freeresult($result);

	return $guests_online;
}

/**
* Queries the session table to get information about online users
* @param int $item_id Limits the search to the item with this id
* @param string $item The name of the item which is stored in the session table as session_{$item}_id
* @return array An array containing the ids of online, hidden and visible users, as well as statistical info
*/
function obtain_users_online($item_id = 0, $item = 'forum')
{
	global $db, $config, $user;

	$reading_sql = '';
	if ($item_id !== 0)
	{
		$reading_sql = ' AND s.session_' . $item . '_id = ' . (int) $item_id;
	}

	$online_users = array(
		'online_users'			=> array(),
		'hidden_users'			=> array(),
		'total_online'			=> 0,
		'visible_online'		=> 0,
		'hidden_online'			=> 0,
		'guests_online'			=> 0,
	);

	if ($config['load_online_guests'])
	{
		$online_users['guests_online'] = obtain_guest_count($item_id, $item);
	}

	// a little discrete magic to cache this for 30 seconds
	$time = (time() - (intval($config['load_online_time']) * 60));

	$sql = 'SELECT s.session_user_id, s.session_ip, s.session_viewonline
		FROM ' . SESSIONS_TABLE . ' s
		WHERE s.session_time >= ' . ($time - ((int) ($time % 30))) .
			$reading_sql .
		' AND s.session_user_id <> ' . ANONYMOUS;
	$result = $db->sql_query($sql);

	while ($row = $db->sql_fetchrow($result))
	{
		// Skip multiple sessions for one user
		if (!isset($online_users['online_users'][$row['session_user_id']]))
		{
			$online_users['online_users'][$row['session_user_id']] = (int) $row['session_user_id'];
			if ($row['session_viewonline'])
			{
				$online_users['visible_online']++;
			}
			else
			{
				$online_users['hidden_users'][$row['session_user_id']] = (int) $row['session_user_id'];
				$online_users['hidden_online']++;
			}
		}
	}
	$online_users['total_online'] = $online_users['guests_online'] + $online_users['visible_online'] + $online_users['hidden_online'];
	$db->sql_freeresult($result);

	return $online_users;
}

/**
* Uses the result of obtain_users_online to generate a localized, readable representation.
* @param mixed $online_users result of obtain_users_online - array with user_id lists for total, hidden and visible users, and statistics
* @param int $item_id Indicate that the data is limited to one item and not global
* @param string $item The name of the item which is stored in the session table as session_{$item}_id
* @return array An array containing the string for output to the template
*/
function obtain_users_online_string($online_users, $item_id = 0, $item = 'forum')
{
	global $config, $db, $user, $auth;

	$user_online_link = $online_userlist = '';
	// Need caps version of $item for language-strings
	$item_caps = strtoupper($item);

	if (sizeof($online_users['online_users']))
	{
		$sql = 'SELECT username, username_clean, user_id, user_type, user_allow_viewonline, user_colour
				FROM ' . USERS_TABLE . '
				WHERE ' . $db->sql_in_set('user_id', $online_users['online_users']) . '
				ORDER BY username_clean ASC';
		$result = $db->sql_query($sql);

		while ($row = $db->sql_fetchrow($result))
		{
			// User is logged in and therefore not a guest
			if ($row['user_id'] != ANONYMOUS)
			{
				if (isset($online_users['hidden_users'][$row['user_id']]))
				{
					$row['username'] = '<em>' . $row['username'] . '</em>';
				}

				if (!isset($online_users['hidden_users'][$row['user_id']]) || $auth->acl_get('u_viewonline'))
				{
					$user_online_link = get_username_string(($row['user_type'] <> USER_IGNORE) ? 'full' : 'no_profile', $row['user_id'], $row['username'], $row['user_colour']);
					$online_userlist .= ($online_userlist != '') ? ', ' . $user_online_link : $user_online_link;
				}
			}
		}
		$db->sql_freeresult($result);
	}

	if (!$online_userlist)
	{
		$online_userlist = $user->lang['NO_ONLINE_USERS'];
	}

	if ($item_id === 0)
	{
		$online_userlist = $user->lang['REGISTERED_USERS'] . ' ' . $online_userlist;
	}
	else if ($config['load_online_guests'])
	{
		$l_online = ($online_users['guests_online'] === 1) ? $user->lang['BROWSING_' . $item_caps . '_GUEST'] : $user->lang['BROWSING_' . $item_caps . '_GUESTS'];
		$online_userlist = sprintf($l_online, $online_userlist, $online_users['guests_online']);
	}
	else
	{
		$online_userlist = sprintf($user->lang['BROWSING_' . $item_caps], $online_userlist);
	}
	// Build online listing
	$vars_online = array(
		'ONLINE'	=> array('total_online', 'l_t_user_s', 0),
		'REG'		=> array('visible_online', 'l_r_user_s', !$config['load_online_guests']),
		'HIDDEN'	=> array('hidden_online', 'l_h_user_s', $config['load_online_guests']),
		'GUEST'		=> array('guests_online', 'l_g_user_s', 0)
	);

	foreach ($vars_online as $l_prefix => $var_ary)
	{
		if ($var_ary[2])
		{
			$l_suffix = '_AND';
		}
		else
		{
			$l_suffix = '';
		}
		switch ($online_users[$var_ary[0]])
		{
			case 0:
				${$var_ary[1]} = $user->lang[$l_prefix . '_USERS_ZERO_TOTAL' . $l_suffix];
			break;

			case 1:
				${$var_ary[1]} = $user->lang[$l_prefix . '_USER_TOTAL' . $l_suffix];
			break;

			default:
				${$var_ary[1]} = $user->lang[$l_prefix . '_USERS_TOTAL' . $l_suffix];
			break;
		}
	}
	unset($vars_online);

	$l_online_users = sprintf($l_t_user_s, $online_users['total_online']);
	$l_online_users .= sprintf($l_r_user_s, $online_users['visible_online']);
	$l_online_users .= sprintf($l_h_user_s, $online_users['hidden_online']);

	if ($config['load_online_guests'])
	{
		$l_online_users .= sprintf($l_g_user_s, $online_users['guests_online']);
	}



	return array(
		'online_userlist'	=> $online_userlist,
		'l_online_users'	=> $l_online_users,
	);
}

/**
* Get option bitfield from custom data
*
* @param int	$bit		The bit/value to get
* @param int	$data		Current bitfield to check
* @return bool	Returns true if value of constant is set in bitfield, else false
*/
function phpbb_optionget($bit, $data)
{
	return ($data & 1 << (int) $bit) ? true : false;
}

/**
* Set option bitfield
*
* @param int	$bit		The bit/value to set/unset
* @param bool	$set		True if option should be set, false if option should be unset.
* @param int	$data		Current bitfield to change
*
* @return int	The new bitfield
*/
function phpbb_optionset($bit, $set, $data)
{
	if ($set && !($data & 1 << $bit))
	{
		$data += 1 << $bit;
	}
	else if (!$set && ($data & 1 << $bit))
	{
		$data -= 1 << $bit;
	}

	return $data;
}

/**
* Generate page header
*/
function page_header($page_title = '', $display_online_list = true, $item_id = 0, $item = 'forum')
{
	global $db, $config, $template, $SID, $_SID, $user, $auth, $phpEx, $phpbb_root_path;

	if (defined('HEADER_INC'))
	{
		return;
	}

	define('HEADER_INC', true);

	// gzip_compression
	if ($config['gzip_compress'])
	{
		if (@extension_loaded('zlib') && !headers_sent())
		{
			ob_start('ob_gzhandler');
		}
	}

	// Generate logged in/logged out status
	if ($user->data['user_id'] != ANONYMOUS)
	{
		$u_login_logout = append_sid("{$phpbb_root_path}ucp.$phpEx", 'mode=logout', true, $user->session_id);
		$l_login_logout = sprintf($user->lang['LOGOUT_USER'], $user->data['username']);
	}
	else
	{
		$u_login_logout = append_sid("{$phpbb_root_path}ucp.$phpEx", 'mode=login');
		$l_login_logout = $user->lang['LOGIN'];
	}

	// Last visit date/time
	$s_last_visit = ($user->data['user_id'] != ANONYMOUS) ? $user->format_date($user->data['session_last_visit']) : '';

	// Get users online list ... if required
	$l_online_users = $online_userlist = $l_online_record = '';

	if ($config['load_online'] && $config['load_online_time'] && $display_online_list)
	{
		/**
		* Load online data:
		* For obtaining another session column use $item and $item_id in the function-parameter, whereby the column is session_{$item}_id.
		*/
		$item_id = max($item_id, 0);

		$online_users = obtain_users_online($item_id, $item);
		$user_online_strings = obtain_users_online_string($online_users, $item_id, $item);

		$l_online_users = $user_online_strings['l_online_users'];
		$online_userlist = $user_online_strings['online_userlist'];
		$total_online_users = $online_users['total_online'];

		if ($total_online_users > $config['record_online_users'])
		{
			set_config('record_online_users', $total_online_users, true);
			set_config('record_online_date', time(), true);
		}

		$l_online_record = sprintf($user->lang['RECORD_ONLINE_USERS'], $config['record_online_users'], $user->format_date($config['record_online_date']));

		$l_online_time = ($config['load_online_time'] == 1) ? 'VIEW_ONLINE_TIME' : 'VIEW_ONLINE_TIMES';
		$l_online_time = sprintf($user->lang[$l_online_time], $config['load_online_time']);
	}
	else
	{
		$l_online_time = '';
	}

	$l_privmsgs_text = $l_privmsgs_text_unread = '';
	$s_privmsg_new = false;

	// Obtain number of new private messages if user is logged in
	if (!empty($user->data['is_registered']))
	{
		if ($user->data['user_new_privmsg'])
		{
			$l_message_new = ($user->data['user_new_privmsg'] == 1) ? $user->lang['NEW_PM'] : $user->lang['NEW_PMS'];
			$l_privmsgs_text = sprintf($l_message_new, $user->data['user_new_privmsg']);

			if (!$user->data['user_last_privmsg'] || $user->data['user_last_privmsg'] > $user->data['session_last_visit'])
			{
				$sql = 'UPDATE ' . USERS_TABLE . '
					SET user_last_privmsg = ' . $user->data['session_last_visit'] . '
					WHERE user_id = ' . $user->data['user_id'];
				$db->sql_query($sql);

				$s_privmsg_new = true;
			}
			else
			{
				$s_privmsg_new = false;
			}
		}
		else
		{
			$l_privmsgs_text = $user->lang['NO_NEW_PM'];
			$s_privmsg_new = false;
		}

		$l_privmsgs_text_unread = '';

		if ($user->data['user_unread_privmsg'] && $user->data['user_unread_privmsg'] != $user->data['user_new_privmsg'])
		{
			$l_message_unread = ($user->data['user_unread_privmsg'] == 1) ? $user->lang['UNREAD_PM'] : $user->lang['UNREAD_PMS'];
			$l_privmsgs_text_unread = sprintf($l_message_unread, $user->data['user_unread_privmsg']);
		}
	}

	$forum_id = request_var('f', 0);
	$topic_id = request_var('t', 0);

	$s_feed_news = false;

	// Get option for news
	if ($config['feed_enable'])
	{
		$sql = 'SELECT forum_id
			FROM ' . FORUMS_TABLE . '
			WHERE ' . $db->sql_bit_and('forum_options', FORUM_OPTION_FEED_NEWS, '<> 0');
		$result = $db->sql_query_limit($sql, 1, 0, 600);
		$s_feed_news = (int) $db->sql_fetchfield('forum_id');
		$db->sql_freeresult($result);
	}

	// Determine board url - we may need it later
	$board_url = generate_board_url() . '/';
	$web_path = (defined('PHPBB_USE_BOARD_URL_PATH') && PHPBB_USE_BOARD_URL_PATH) ? $board_url : $phpbb_root_path;

	// Which timezone?
	$tz = ($user->data['user_id'] != ANONYMOUS) ? strval(doubleval($user->data['user_timezone'])) : strval(doubleval($config['board_timezone']));

	// Send a proper content-language to the output
	$user_lang = $user->lang['USER_LANG'];
	if (strpos($user_lang, '-x-') !== false)
	{
		$user_lang = substr($user_lang, 0, strpos($user_lang, '-x-'));
	}

	// The following assigns all _common_ variables that may be used at any point in a template.
	$template->assign_vars(array(
		'SITENAME'						=> $config['sitename'],
		'SITE_DESCRIPTION'				=> $config['site_desc'],
		'PAGE_TITLE'					=> $page_title,
		'SCRIPT_NAME'					=> str_replace('.' . $phpEx, '', $user->page['page_name']),
		'LAST_VISIT_DATE'				=> sprintf($user->lang['YOU_LAST_VISIT'], $s_last_visit),
		'LAST_VISIT_YOU'				=> $s_last_visit,
		'CURRENT_TIME'					=> sprintf($user->lang['CURRENT_TIME'], $user->format_date(time(), false, true)),
		'TOTAL_USERS_ONLINE'			=> $l_online_users,
		'LOGGED_IN_USER_LIST'			=> $online_userlist,
		'RECORD_USERS'					=> $l_online_record,
		'PRIVATE_MESSAGE_INFO'			=> $l_privmsgs_text,
		'PRIVATE_MESSAGE_INFO_UNREAD'	=> $l_privmsgs_text_unread,

		'S_USER_NEW_PRIVMSG'			=> $user->data['user_new_privmsg'],
		'S_USER_UNREAD_PRIVMSG'			=> $user->data['user_unread_privmsg'],
		'S_USER_NEW'					=> $user->data['user_new'],

		'SID'				=> $SID,
		'_SID'				=> $_SID,
		'SESSION_ID'		=> $user->session_id,
		'ROOT_PATH'			=> $phpbb_root_path,
		'BOARD_URL'			=> $board_url,

		'L_LOGIN_LOGOUT'	=> $l_login_logout,
		'L_INDEX'			=> $user->lang['FORUM_INDEX'],
		'L_ONLINE_EXPLAIN'	=> $l_online_time,

		'U_PRIVATEMSGS'			=> append_sid("{$phpbb_root_path}ucp.$phpEx", 'i=pm&folder=inbox'),
		'U_RETURN_INBOX'		=> append_sid("{$phpbb_root_path}ucp.$phpEx", 'i=pm&folder=inbox'),
		'U_POPUP_PM'			=> append_sid("{$phpbb_root_path}ucp.$phpEx", 'i=pm&mode=popup'),
		'UA_POPUP_PM'			=> addslashes(append_sid("{$phpbb_root_path}ucp.$phpEx", 'i=pm&mode=popup')),
		'U_MEMBERLIST'			=> append_sid("{$phpbb_root_path}memberlist.$phpEx"),
		'U_VIEWONLINE'			=> ($auth->acl_gets('u_viewprofile', 'a_user', 'a_useradd', 'a_userdel')) ? append_sid("{$phpbb_root_path}viewonline.$phpEx") : '',
		'U_LOGIN_LOGOUT'		=> $u_login_logout,
		'U_INDEX'				=> append_sid("{$phpbb_root_path}index.$phpEx"),
		'U_SEARCH'				=> append_sid("{$phpbb_root_path}search.$phpEx"),
		'U_REGISTER'			=> append_sid("{$phpbb_root_path}ucp.$phpEx", 'mode=register'),
		'U_PROFILE'				=> append_sid("{$phpbb_root_path}ucp.$phpEx"),
		'U_MODCP'				=> append_sid("{$phpbb_root_path}mcp.$phpEx", false, true, $user->session_id),
		'U_FAQ'					=> append_sid("{$phpbb_root_path}faq.$phpEx"),
		'U_SEARCH_SELF'			=> append_sid("{$phpbb_root_path}search.$phpEx", 'search_id=egosearch'),
		'U_SEARCH_NEW'			=> append_sid("{$phpbb_root_path}search.$phpEx", 'search_id=newposts'),
		'U_SEARCH_UNANSWERED'	=> append_sid("{$phpbb_root_path}search.$phpEx", 'search_id=unanswered'),
		'U_SEARCH_UNREAD'		=> append_sid("{$phpbb_root_path}search.$phpEx", 'search_id=unreadposts'),
		'U_SEARCH_ACTIVE_TOPICS'=> append_sid("{$phpbb_root_path}search.$phpEx", 'search_id=active_topics'),
		'U_DELETE_COOKIES'		=> append_sid("{$phpbb_root_path}ucp.$phpEx", 'mode=delete_cookies'),
		'U_TEAM'				=> ($user->data['user_id'] != ANONYMOUS && !$auth->acl_get('u_viewprofile')) ? '' : append_sid("{$phpbb_root_path}memberlist.$phpEx", 'mode=leaders'),
		'U_TERMS_USE'			=> append_sid("{$phpbb_root_path}ucp.$phpEx", 'mode=terms'),
		'U_PRIVACY'				=> append_sid("{$phpbb_root_path}ucp.$phpEx", 'mode=privacy'),
		'U_RESTORE_PERMISSIONS'	=> ($user->data['user_perm_from'] && $auth->acl_get('a_switchperm')) ? append_sid("{$phpbb_root_path}ucp.$phpEx", 'mode=restore_perm') : '',
		'U_FEED'				=> generate_board_url() . "/feed.$phpEx",

		'S_USER_LOGGED_IN'		=> ($user->data['user_id'] != ANONYMOUS) ? true : false,
		'S_AUTOLOGIN_ENABLED'	=> ($config['allow_autologin']) ? true : false,
		'S_BOARD_DISABLED'		=> ($config['board_disable']) ? true : false,
		'S_REGISTERED_USER'		=> (!empty($user->data['is_registered'])) ? true : false,
		'S_IS_BOT'				=> (!empty($user->data['is_bot'])) ? true : false,
		'S_USER_PM_POPUP'		=> $user->optionget('popuppm'),
		'S_USER_LANG'			=> $user_lang,
		'S_USER_BROWSER'		=> (isset($user->data['session_browser'])) ? $user->data['session_browser'] : $user->lang['UNKNOWN_BROWSER'],
		'S_USERNAME'			=> $user->data['username'],
		'S_CONTENT_DIRECTION'	=> $user->lang['DIRECTION'],
		'S_CONTENT_FLOW_BEGIN'	=> ($user->lang['DIRECTION'] == 'ltr') ? 'left' : 'right',
		'S_CONTENT_FLOW_END'	=> ($user->lang['DIRECTION'] == 'ltr') ? 'right' : 'left',
		'S_CONTENT_ENCODING'	=> 'UTF-8',
		'S_TIMEZONE'			=> ($user->data['user_dst'] || ($user->data['user_id'] == ANONYMOUS && $config['board_dst'])) ? sprintf($user->lang['ALL_TIMES'], $user->lang['tz'][$tz], $user->lang['tz']['dst']) : sprintf($user->lang['ALL_TIMES'], $user->lang['tz'][$tz], ''),
		'S_DISPLAY_ONLINE_LIST'	=> ($l_online_time) ? 1 : 0,
		'S_DISPLAY_SEARCH'		=> (!$config['load_search']) ? 0 : (isset($auth) ? ($auth->acl_get('u_search') && $auth->acl_getf_global('f_search')) : 1),
		'S_DISPLAY_PM'			=> ($config['allow_privmsg'] && !empty($user->data['is_registered']) && ($auth->acl_get('u_readpm') || $auth->acl_get('u_sendpm'))) ? true : false,
		'S_DISPLAY_MEMBERLIST'	=> (isset($auth)) ? $auth->acl_get('u_viewprofile') : 0,
		'S_NEW_PM'				=> ($s_privmsg_new) ? 1 : 0,
		'S_REGISTER_ENABLED'	=> ($config['require_activation'] != USER_ACTIVATION_DISABLE) ? true : false,
		'S_FORUM_ID'			=> $forum_id,
		'S_TOPIC_ID'			=> $topic_id,

		'S_LOGIN_ACTION'		=> (!defined('ADMIN_START')) ? append_sid("{$phpbb_root_path}ucp.$phpEx", 'mode=login') . '&redirect=' . urlencode(str_replace('&', '&', build_url())) : append_sid("index.$phpEx", false, true, $user->session_id) . '&redirect=' . urlencode(str_replace('&', '&', build_url())),

		'S_ENABLE_FEEDS'			=> ($config['feed_enable']) ? true : false,
		'S_ENABLE_FEEDS_FORUMS'		=> ($config['feed_overall_forums']) ? true : false,
		'S_ENABLE_FEEDS_TOPICS'		=> ($config['feed_overall_topics']) ? true : false,
		'S_ENABLE_FEEDS_NEWS'		=> ($s_feed_news) ? true : false,

		
'S_REIMG'					=> ($config['reimg_max_width'] || $config['reimg_max_height'] || $config['reimg_rel_width']) ? 1 : 0,
		'REIMG_MAX_WIDTH'			=> $config['reimg_max_width'],
		'REIMG_MAX_HEIGHT'			=> $config['reimg_max_height'],
		'REIMG_REL_WIDTH'			=> $config['reimg_rel_width'],
		'S_REIMG_SWAP_PORTRAIT'		=> ($config['reimg_swap_portrait']) ? 1 : 0,
		'REIMG_LOADING_IMG_SRC'		=> $user->img('icon_reimg_loading', '', false, '', 'src'),
		'REIMG_LOADING_IMG_WIDTH'	=> $user->img('icon_reimg_loading', '', false, '', 'width'),
		'REIMG_LOADING_IMG_HEIGHT'	=> $user->img('icon_reimg_loading', '', false, '', 'height'),
		'S_REIMG_BUTTON'			=> (substr($config['reimg_link'], 0, 6) == 'button') ? 1 : 0,
		'S_REIMG_LINK'				=> (substr($config['reimg_link'], -4) == 'link') ? 1 : 0,
		'S_REIMG_ZOOM'				=> (substr($config['reimg_zoom'], 0, 8) == '_litebox') ? '_litebox' : $config['reimg_zoom'],
		'REIMG_ZOOM_IN_IMG_SRC'		=> $user->img('icon_reimg_zoom_in', '', false, '', 'src'),
		'REIMG_ZOOM_IN_IMG_WIDTH'	=> $user->img('icon_reimg_zoom_in', '', false, '', 'width'),
		'REIMG_ZOOM_IN_IMG_HEIGHT'	=> $user->img('icon_reimg_zoom_in', '', false, '', 'height'),
		'S_REIMG_LITEBOX'			=> ((substr($config['reimg_zoom'], 0, 8) == '_litebox' || $config['reimg_zoom'] == '_highslide') && ($config['reimg_max_width'] || $config['reimg_max_height'] || $config['reimg_rel_width'])) ? $config['reimg_zoom'] : '',
		'REIMG_ZOOM_OUT_IMG_SRC'	=> $user->img('icon_reimg_zoom_out', '', false, '', 'src'),
		'REIMG_ZOOM_OUT_IMG_WIDTH'	=> $user->img('icon_reimg_zoom_out', '', false, '', 'width'),
		'REIMG_ZOOM_OUT_IMG_HEIGHT'	=> $user->img('icon_reimg_zoom_out', '', false, '', 'height'),
		'REIMG_PROPERTIES'			=> reimg_properties(),

'T_THEME_PATH'			=> "{$web_path}styles/" . $user->theme['theme_path'] . '/theme',
		'T_TEMPLATE_PATH'		=> "{$web_path}styles/" . $user->theme['template_path'] . '/template',
		'T_SUPER_TEMPLATE_PATH'	=> (isset($user->theme['template_inherit_path']) && $user->theme['template_inherit_path']) ? "{$web_path}styles/" . $user->theme['template_inherit_path'] . '/template' : "{$web_path}styles/" . $user->theme['template_path'] . '/template',
		'T_IMAGESET_PATH'		=> "{$web_path}styles/" . $user->theme['imageset_path'] . '/imageset',
		'T_IMAGESET_LANG_PATH'	=> "{$web_path}styles/" . $user->theme['imageset_path'] . '/imageset/' . $user->data['user_lang'],
		'T_IMAGES_PATH'			=> "{$web_path}images/",
		'T_SMILIES_PATH'		=> "{$web_path}{$config['smilies_path']}/",
		'T_AVATAR_PATH'			=> "{$web_path}{$config['avatar_path']}/",
		'T_AVATAR_GALLERY_PATH'	=> "{$web_path}{$config['avatar_gallery_path']}/",
		'T_ICONS_PATH'			=> "{$web_path}{$config['icons_path']}/",
		'T_RANKS_PATH'			=> "{$web_path}{$config['ranks_path']}/",
		'T_UPLOAD_PATH'			=> "{$web_path}{$config['upload_path']}/",
		'T_STYLESHEET_LINK'		=> (!$user->theme['theme_storedb']) ? "{$web_path}styles/" . $user->theme['theme_path'] . '/theme/stylesheet.css' : append_sid("{$phpbb_root_path}style.$phpEx", 'id=' . $user->theme['style_id'] . '&lang=' . $user->data['user_lang']),
		'T_STYLESHEET_NAME'		=> $user->theme['theme_name'],

		'T_THEME_NAME'			=> $user->theme['theme_path'],
		'T_TEMPLATE_NAME'		=> $user->theme['template_path'],
		'T_SUPER_TEMPLATE_NAME'	=> (isset($user->theme['template_inherit_path']) && $user->theme['template_inherit_path']) ? $user->theme['template_inherit_path'] : $user->theme['template_path'],
		'T_IMAGESET_NAME'		=> $user->theme['imageset_path'],
		'T_IMAGESET_LANG_NAME'	=> $user->data['user_lang'],
		'T_IMAGES'				=> 'images',
		'T_SMILIES'				=> $config['smilies_path'],
		'T_AVATAR'				=> $config['avatar_path'],
		'T_AVATAR_GALLERY'		=> $config['avatar_gallery_path'],
		'T_ICONS'				=> $config['icons_path'],
		'T_RANKS'				=> $config['ranks_path'],
		'T_UPLOAD'				=> $config['upload_path'],

		'SITE_LOGO_IMG'			=> $user->img('site_logo'),

		'A_COOKIE_SETTINGS'		=> addslashes('; path=' . $config['cookie_path'] . ((!$config['cookie_domain'] || $config['cookie_domain'] == 'localhost' || $config['cookie_domain'] == '127.0.0.1') ? '' : '; domain=' . $config['cookie_domain']) . ((!$config['cookie_secure']) ? '' : '; secure')),
	));

	$user->add_lang('mods/reimg');
// application/xhtml+xml not used because of IE
	header('Content-type: text/html; charset=UTF-8');

	header('Cache-Control: private, no-cache="set-cookie"');
	header('Expires: 0');
	header('Pragma: no-cache');

	return;
}

/**
* Generate page footer
*/
function page_footer($run_cron = true)
{
	global $db, $config, $template, $user, $auth, $cache, $starttime, $phpbb_root_path, $phpEx;

	// Output page creation time
	if (defined('DEBUG'))
	{
		$mtime = explode(' ', microtime());
		$totaltime = $mtime[0] + $mtime[1] - $starttime;

		if (!empty($_REQUEST['explain']) && $auth->acl_get('a_') && defined('DEBUG_EXTRA') && method_exists($db, 'sql_report'))
		{
			$db->sql_report('display');
		}

		$debug_output = sprintf('Time : %.3fs | ' . $db->sql_num_queries() . ' Queries | GZIP : ' . (($config['gzip_compress'] && @extension_loaded('zlib')) ? 'On' : 'Off') . (($user->load) ? ' | Load : ' . $user->load : ''), $totaltime);

		if ($auth->acl_get('a_') && defined('DEBUG_EXTRA'))
		{
			if (function_exists('memory_get_usage'))
			{
				if ($memory_usage = memory_get_usage())
				{
					global $base_memory_usage;
					$memory_usage -= $base_memory_usage;
					$memory_usage = get_formatted_filesize($memory_usage);

					$debug_output .= ' | Memory Usage: ' . $memory_usage;
				}
			}

			$debug_output .= ' | <a href="' . build_url() . '&explain=1">Explain</a>';
		}
	}

	$template->assign_vars(array(
		'DEBUG_OUTPUT'			=> (defined('DEBUG')) ? $debug_output : '',
		'TRANSLATION_INFO'		=> (!empty($user->lang['TRANSLATION_INFO'])) ? $user->lang['TRANSLATION_INFO'] : '',

		'U_ACP' => ($auth->acl_get('a_') && !empty($user->data['is_registered'])) ? append_sid("{$phpbb_root_path}adm/index.$phpEx", false, true, $user->session_id) : '')
	);

	// Call cron-type script
	$call_cron = false;
	if (!defined('IN_CRON') && $run_cron && !$config['board_disable'])
	{
		$call_cron = true;
		$time_now = (!empty($user->time_now) && is_int($user->time_now)) ? $user->time_now : time();

		// Any old lock present?
		if (!empty($config['cron_lock']))
		{
			$cron_time = explode(' ', $config['cron_lock']);

			// If 1 hour lock is present we do not call cron.php
			if ($cron_time[0] + 3600 >= $time_now)
			{
				$call_cron = false;
			}
		}
	}

	// Call cron job?
	if ($call_cron)
	{
		$cron_type = '';

		if ($time_now - $config['queue_interval'] > $config['last_queue_run'] && !defined('IN_ADMIN') && file_exists($phpbb_root_path . 'cache/queue.' . $phpEx))
		{
			// Process email queue
			$cron_type = 'queue';
		}
		else if (method_exists($cache, 'tidy') && $time_now - $config['cache_gc'] > $config['cache_last_gc'])
		{
			// Tidy the cache
			$cron_type = 'tidy_cache';
		}
		else if ($config['warnings_expire_days'] && ($time_now - $config['warnings_gc'] > $config['warnings_last_gc']))
		{
			$cron_type = 'tidy_warnings';
		}
		else if ($time_now - $config['database_gc'] > $config['database_last_gc'])
		{
			// Tidy the database
			$cron_type = 'tidy_database';
		}
		else if ($time_now - $config['search_gc'] > $config['search_last_gc'])
		{
			// Tidy the search
			$cron_type = 'tidy_search';
		}
		else if ($time_now - $config['session_gc'] > $config['session_last_gc'])
		{
			$cron_type = 'tidy_sessions';
		}

		if ($cron_type)
		{
			$template->assign_var('RUN_CRON_TASK', '<img src="' . append_sid($phpbb_root_path . 'cron.' . $phpEx, 'cron_type=' . $cron_type) . '" width="1" height="1" alt="cron" />');
		}
	}

	$template->display('body');

	garbage_collection();
	exit_handler();
}

/**
* Closing the cache object and the database
* Cool function name, eh? We might want to add operations to it later
*/
function garbage_collection()
{
	global $cache, $db;

	// Unload cache, must be done before the DB connection if closed
	if (!empty($cache))
	{
		$cache->unload();
	}

	// Close our DB connection.
	if (!empty($db))
	{
		$db->sql_close();
	}
}

/**
* Handler for exit calls in phpBB.
* This function supports hooks.
*
* Note: This function is called after the template has been outputted.
*/
function exit_handler()
{
	global $phpbb_hook, $config;

	if (!empty($phpbb_hook) && $phpbb_hook->call_hook(__FUNCTION__))
	{
		if ($phpbb_hook->hook_return(__FUNCTION__))
		{
			return $phpbb_hook->hook_return_result(__FUNCTION__);
		}
	}

	// As a pre-caution... some setups display a blank page if the flush() is not there.
	(empty($config['gzip_compress'])) ? @flush() : @ob_flush();

	exit;
}

/**
* Handler for init calls in phpBB. This function is called in user::setup();
* This function supports hooks.
*/
function phpbb_user_session_handler()
{
	global $phpbb_hook;

	if (!empty($phpbb_hook) && $phpbb_hook->call_hook(__FUNCTION__))
	{
		if ($phpbb_hook->hook_return(__FUNCTION__))
		{
			return $phpbb_hook->hook_return_result(__FUNCTION__);
		}
	}

	return;
}
/**

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DavidIQ
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Re: ReIMG Image Resizer

Post by DavidIQ » Wed Apr 14, 2010 4:22 pm

If that's your entire functions.php file then you're missing the bottom part of it:

Code: Select all

* Get the applicable image properties
*/
function reimg_properties()
{
   return 'class="reimg" onload="0" onerror="0" ';
}
?>
I think you missunderstood when I said to remove that. I was referring only to the part where it seemed to be right smack in the middle of another function. :)
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Joined: Wed Apr 14, 2010 12:46 pm

Re: ReIMG Image Resizer

Post by Jaymo_sx » Wed Apr 14, 2010 4:24 pm

ok added that to the end.... now getting this :S
Parse error: syntax error, unexpected T_VARIABLE in /home/dodgdcou/public_html/forum/includes/functions_content.php on line 773

What the hell?

The code is:

Code: Select all

{
				$handle = @fopen($file, 'r+');

				if (is_resource($handle))
				{
					fclose($handle);
					return true;
Last edited by Jaymo_sx on Wed Apr 14, 2010 4:27 pm, edited 1 time in total.

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DavidIQ
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Re: ReIMG Image Resizer

Post by DavidIQ » Wed Apr 14, 2010 4:26 pm

End of the file. Don't worry...it'll start sinking in soon enough ;)
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Re: ReIMG Image Resizer

Post by Jaymo_sx » Wed Apr 14, 2010 4:29 pm

as above your post, i edited it

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DavidIQ
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Re: ReIMG Image Resizer

Post by DavidIQ » Wed Apr 14, 2010 4:32 pm

The error is in functions_content.php. Post lines 750-900 from that file.
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Re: ReIMG Image Resizer

Post by Jaymo_sx » Wed Apr 14, 2010 4:37 pm

Code: Select all

if (!$user->optionget('viewcensors') && $config['allow_nocensors'] && $auth->acl_get('u_chgcensors'))
		{
			$censors = array();
		}
		else
		{
			$censors = $cache->obtain_word_list();
		}
	}

	if (sizeof($censors))
	{
		return preg_replace($censors['match'], $censors['replace'], $text);
	}

	return $text;
}

/**
* custom version of nl2br which takes custom BBCodes into account
*/
function bbcode_nl2br($text)
{
	// custom BBCodes might contain carriage returns so they
	// are not converted into <br /> so now revert that
	$text = str_replace(array("\n", "\r"), array('<br />', "\n"), $text);
	return $text;
}

/**
* Smiley processing
*/
function smiley_text($text, $force_option = false)
{
	global $config, $user, $phpbb_root_path;

	if ($force_option || !$config['allow_smilies'] || !$user->optionget('viewsmilies'))
	{
		return preg_replace('#<!\-\- s(.*?) \-\-><img src="\{SMILIES_PATH\}\/.*? \/><!\-\- s\1 \-\->#', '\1', $text);
	}
	else
	{
		$root_path = (defined('PHPBB_USE_BOARD_URL_PATH') && PHPBB_USE_BOARD_URL_PATH) ? generate_board_url() . '/' : $phpbb_root_path;
		return preg_replace('#<!\-\- s(.*?) \-\-><img src="\{SMILIES_PATH\}\/(.*?) \/><!\-\- s\1 \-\->#', '<img src="' . $root_path . $config['smilies_path'] . '/\2 />', $text);
	}
}

/**
* General attachment parsing
*
* @param mixed $forum_id The forum id the attachments are displayed in (false if in private message)
* @param string &$message The post/private message
* @param array &$attachments The attachments to parse for (inline) display. The attachments array will hold templated data after parsing.
* @param array &$update_count The attachment counts to be updated - will be filled
* @param bool $preview If set to true the attachments are parsed for preview. Within preview mode the comments are fetched from the given $attachments array and not fetched from the database.
*/
function parse_attachments($forum_id, &$message, &$attachments, &$update_count, $preview = false)
{
	if (!sizeof($attachments))
	{
		return;
	}

	global $template, $cache, $user;
	global $extensions, $config, $phpbb_root_path, $phpEx;

	//
	$compiled_attachments = array();

	if (!isset($template->filename['attachment_tpl']))
	{
		$template->set_filenames(array(
			'attachment_tpl'	=> 'attachment.html')
$template->assign_vars(array(
		'S_REIMG'			=> ($config['reimg_max_width'] || $config['reimg_max_height'] || $config['reimg_rel_width']) ? 1 : 0,
		'REIMG_PROPERTIES'	=> reimg_properties(),
	));
		);
	}

	if (empty($extensions) || !is_array($extensions))
	{
		$extensions = $cache->obtain_attach_extensions($forum_id);
	}

	// Look for missing attachment information...
	$attach_ids = array();
	foreach ($attachments as $pos => $attachment)
	{
		// If is_orphan is set, we need to retrieve the attachments again...
		if (!isset($attachment['extension']) && !isset($attachment['physical_filename']))
		{
			$attach_ids[(int) $attachment['attach_id']] = $pos;
		}
	}

	// Grab attachments (security precaution)
	if (sizeof($attach_ids))
	{
		global $db;

		$new_attachment_data = array();

		$sql = 'SELECT *
			FROM ' . ATTACHMENTS_TABLE . '
			WHERE ' . $db->sql_in_set('attach_id', array_keys($attach_ids));
		$result = $db->sql_query($sql);

		while ($row = $db->sql_fetchrow($result))
		{
			if (!isset($attach_ids[$row['attach_id']]))
			{
				continue;
			}

			// If we preview attachments we will set some retrieved values here
			if ($preview)
			{
				$row['attach_comment'] = $attachments[$attach_ids[$row['attach_id']]]['attach_comment'];
			}

			$new_attachment_data[$attach_ids[$row['attach_id']]] = $row;
		}
		$db->sql_freeresult($result);

		$attachments = $new_attachment_data;
		unset($new_attachment_data);
	}

	// Sort correctly
	if ($config['display_order'])
	{
		// Ascending sort
		krsort($attachments);
	}
	else
	{
		// Descending sort
		ksort($attachments);
	}

	foreach ($attachments as $attachment)
	{
		if (!sizeof($attachment))
		{
			continue;
		}

		// We need to reset/empty the _file block var, because this function might be called more than once
		$template->destroy_block_vars('_file');

		$block_array = array();

		// Some basics...
		$attachment['extension'] = strtolower(trim($attachment['extension']));
		$filename = $phpbb_root_path . $config['upload_path'] . '/' . utf8_basename($attachment['physical_filename']);
		$thumbnail_filename = $phpbb_root_path . $config['upload_path'] . '/thumb_' . utf8_basename($attachment['physical_filename']);

		$upload_icon = '';

		if (isset($extensions[$attachment['extension']]))
		{
			if ($user->img('icon_topic_attach', '') && !$extensions[$attachment['extension']]['upload_icon'])
			{
				$upload_icon = $user->img('icon_topic_attach', '');
			}
			else if ($extensions[$attachment['extension']]['upload_icon'])
			{
				$upload_icon = '<img src="' . $phpbb_root_path . $config['upload_icons_path'] . '/' . trim($extensions[$attachment['extension']]['upload_icon']) . '" alt="" />';
			}
		}

		$filesize = get_formatted_filesize($attachment['filesize'], false);

		$comment = bbcode_nl2br(censor_text($attachment['attach_comment']));

		$block_array += array(
			'UPLOAD_ICON'		=> $upload_icon,
			'FILESIZE'			=> $filesize['value'],
			'SIZE_LANG'			=> $filesize['unit'],
			'DOWNLOAD_NAME'		=> utf8_basename($attachment['real_filename']),
			'COMMENT'			=> $comment,
		);

		$denied = false;

		if (!extension_allowed($forum_id, $attachment['extension'], $extensions))
		{
			$denied = true;

			$block_array += array(
				'S_DENIED'			=> true,
				'DENIED_MESSAGE'	=> sprintf($user->lang['EXTENSION_DISABLED_AFTER_POSTING'], $attachment['extension'])
			);
		}

		if (!$denied)
		{
			$l_downloaded_viewed = $download_link = '';
			$display_cat = $extensions[$attachment['extension']]['display_cat'];

edited:
So a T Variable error is something to do with an action? IE missing a semi-colon after one? to terminate it?

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DavidIQ
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Joined: Thu Jan 06, 2005 1:30 pm
Location: Fishkill, NY
Name: David Colón
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Re: ReIMG Image Resizer

Post by DavidIQ » Wed Apr 14, 2010 4:46 pm

This:

Code: Select all

   if (!isset($template->filename['attachment_tpl']))
   {
      $template->set_filenames(array(
         'attachment_tpl'   => 'attachment.html')
$template->assign_vars(array(
      'S_REIMG'         => ($config['reimg_max_width'] || $config['reimg_max_height'] || $config['reimg_rel_width']) ? 1 : 0,
      'REIMG_PROPERTIES'   => reimg_properties(),
   ));
      );
   }
Should have been this:

Code: Select all

   if (!isset($template->filename['attachment_tpl']))
   {
      $template->set_filenames(array(
         'attachment_tpl'   => 'attachment.html')
      );
   }
	$template->assign_vars(array(
		'S_REIMG'			=> ($config['reimg_max_width'] || $config['reimg_max_height'] || $config['reimg_rel_width']) ? 1 : 0,
		'REIMG_PROPERTIES'	=> reimg_properties(),
	));
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Jaymo_sx
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Re: ReIMG Image Resizer

Post by Jaymo_sx » Wed Apr 14, 2010 4:54 pm

ok, the forum is now running again! thanks!!!

Another slight issue, i feel i have been an idiot...
when loading the files into the correct folders...i loaded them into the 'prosilver' categories...whereas i am using pronight. was this wrong?

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DavidIQ
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Re: ReIMG Image Resizer

Post by DavidIQ » Wed Apr 14, 2010 4:58 pm

No that's fine. Assuming pronight is based on prosilver, you'd just copy the contents of the prosilver folder included with the MOD package into your pronight style and refresh the template. Also any changes that had to be done to prosilver you'd have to also make to pronight files.
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Re: ReIMG Image Resizer

Post by Jaymo_sx » Wed Apr 14, 2010 5:07 pm

im getting this at the top of the 'post reply' and images arent resizing:
[phpBB Debug] PHP Notice: in file /includes/functions_content.php on line 387: preg_replace() [function.preg-replace]: Compilation failed: nothing to repeat at offset 5
[phpBB Debug] PHP Notice: in file /includes/functions.php on line 4205: Cannot modify header information - headers already sent by (output started at /includes/functions.php:3493)
[phpBB Debug] PHP Notice: in file /includes/functions.php on line 4207: Cannot modify header information - headers already sent by (output started at /includes/functions.php:3493)
[phpBB Debug] PHP Notice: in file /includes/functions.php on line 4208: Cannot modify header information - headers already sent by (output started at /includes/functions.php:3493)
[phpBB Debug] PHP Notice: in file /includes/functions.php on line 4209: Cannot modify header information - headers already sent by (output started at /includes/functions.php:3493)
[phpBB Debug] PHP Notice: in file /includes/functions_content.php on line 387: preg_replace() [function.preg-replace]: Compilation failed: nothing to repeat at offset 5
[phpBB Debug] PHP Notice: in file /includes/functions_content.php on line 387: preg_replace() [function.preg-replace]: Compilation failed: nothing to repeat at offset 5

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Re: ReIMG Image Resizer

Post by Jaymo_sx » Wed Apr 14, 2010 5:18 pm

ok just realised what you mean, im doing that now :)

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Re: ReIMG Image Resizer

Post by DavidIQ » Wed Apr 14, 2010 5:25 pm

Jaymo_sx wrote:im getting this at the top of the 'post reply' and images arent resizing:
[phpBB Debug] PHP Notice: in file /includes/functions_content.php on line 387: preg_replace() [function.preg-replace]: Compilation failed: nothing to repeat at offset 5
[phpBB Debug] PHP Notice: in file /includes/functions.php on line 4205: Cannot modify header information - headers already sent by (output started at /includes/functions.php:3493)
[phpBB Debug] PHP Notice: in file /includes/functions.php on line 4207: Cannot modify header information - headers already sent by (output started at /includes/functions.php:3493)
[phpBB Debug] PHP Notice: in file /includes/functions.php on line 4208: Cannot modify header information - headers already sent by (output started at /includes/functions.php:3493)
[phpBB Debug] PHP Notice: in file /includes/functions.php on line 4209: Cannot modify header information - headers already sent by (output started at /includes/functions.php:3493)
[phpBB Debug] PHP Notice: in file /includes/functions_content.php on line 387: preg_replace() [function.preg-replace]: Compilation failed: nothing to repeat at offset 5
[phpBB Debug] PHP Notice: in file /includes/functions_content.php on line 387: preg_replace() [function.preg-replace]: Compilation failed: nothing to repeat at offset 5
You'll have to go back to your functions.php file and fix this as well:

Code: Select all

		case 'bbcode_htm':
			return array(
				'#<!\-\- e \-\-><a href="mailto:(.*?)">.*?</a><!\-\- e \-\->#',
				'#<!\-\- l \-\-><a (?:class="[\w-]+" )?href="(.*?)(?:(&|\?)sid=[0-9a-f]{32})?">.*?</a><!\-\- l \-\->#',
				'#<!\-\- ([mw]) \-\-><a (?:class="[\w-]+" )?href="(.*?)">.*?</a><!\-\- \1 \-\->#',
				'#<!\-\- s(.*?) \-\-><img src="\{SMILIES_PATH\}\/.*? \/><!\-\- s\1 \-\->#',
				'#<!\-\- .*? \-\->
				#s',				'#<.*/**#s',
			);
		break;
That's where the bad code was in which caused some of that to be in the wrong place. Replace the above with:

Code: Select all

		case 'bbcode_htm':
			return array(
				'#<!\-\- e \-\-><a href="mailto:(.*?)">.*?</a><!\-\- e \-\->#',
				'#<!\-\- l \-\-><a (?:class="[\w-]+" )?href="(.*?)(?:(&|\?)sid=[0-9a-f]{32})?">.*?</a><!\-\- l \-\->#',
				'#<!\-\- ([mw]) \-\-><a (?:class="[\w-]+" )?href="(.*?)">.*?</a><!\-\- \1 \-\->#',
				'#<!\-\- s(.*?) \-\-><img src="\{SMILIES_PATH\}\/.*? \/><!\-\- s\1 \-\->#',
				'#<!\-\- .*? \-\->#s',
				'#<.*?>#s',
			);
		break;
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Re: ReIMG Image Resizer

Post by Jaymo_sx » Wed Apr 14, 2010 5:41 pm

ok, i have done all that, forum is good now all codin has disapeared from bg etc...also installed successfully....
but it says i should be able to set it up in the ACP under post settings at the bottom...
'To change settings go to ACP -> Post Settings -> Image Resize Settings (at the bottom of the page).'

I am not seeing this..

Jaymo_sx
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Re: ReIMG Image Resizer

Post by Jaymo_sx » Wed Apr 14, 2010 5:42 pm

and is still not resizing my images :(

Lol this is sooo frustrating!

EDIT:
purged the casche and now all is good :D thank you very very very very VERY much David for all your help!!!!!!
Last edited by Jaymo_sx on Wed Apr 14, 2010 5:49 pm, edited 1 time in total.

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