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2517 lines (2128 loc) · 61.4 KB
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<?php
/**
*
* This file is part of the phpBB Forum Software package.
*
* @copyright (c) phpBB Limited <https://www.phpbb.com>
* @license GNU General Public License, version 2 (GPL-2.0)
*
* For full copyright and license information, please see
* the docs/CREDITS.txt file.
*
*/
/**
* @ignore
*/
if (!defined('IN_PHPBB'))
{
exit;
}
/**
* Default avatar width/height
* @ignore
*/
define('DEFAULT_AVATAR_X', 80);
define('DEFAULT_AVATAR_Y', 80);
// Global functions - all functions can be used by convertors
// SIMPLE FUNCTIONS
/**
* Return the preceding value
*/
function dec($var)
{
return --$var;
}
/**
* Return the next value
*/
function inc($var)
{
return ++$var;
}
/**
* Return whether the value is positive
*/
function is_positive($n)
{
return ($n > 0) ? 1 : 0;
}
/**
* Boolean inverse of the value
*/
function not($var)
{
return ($var) ? 0 : 1;
}
/**
* Convert a textual value to it's equivalent boolean value
*
* @param string $str String to convert (converts yes, on, y, 1 and true to boolean true)
* @return boolean The equivalent value
*/
function str_to_bool($str)
{
$str = strtolower($str);
return ($str == 'yes' || $str == 'on' || $str == 'y' || $str == 'true' || $str == '1') ? true : false;
}
/**
* Function to mimic php's empty() function (it is the same)
*/
function is_empty($mixed)
{
return empty($mixed);
}
/**
* Convert the name of a user's primary group to the appropriate equivalent phpBB group id
*
* @param string $status The name of the group
* @return int The group_id corresponding to the equivalent group
*/
function str_to_primary_group($status)
{
switch (ucfirst(strtolower($status)))
{
case 'Administrator':
return get_group_id('administrators');
break;
case 'Super moderator':
case 'Global moderator':
case 'Moderator':
return get_group_id('global_moderators');
break;
case 'Guest':
case 'Anonymous':
return get_group_id('guests');
break;
default:
return get_group_id('registered');
break;
}
}
/**
* Convert a boolean into the appropriate phpBB constant indicating whether the item is locked
*/
function is_item_locked($bool)
{
return ($bool) ? ITEM_LOCKED : ITEM_UNLOCKED;
}
/**
* Convert a value from days to seconds
*/
function days_to_seconds($days)
{
return ($days * 86400);
}
/**
* Determine whether a user is anonymous and return the appropriate new user_id
*/
function is_user_anonymous($user_id)
{
return ($user_id > ANONYMOUS) ? $user_id : ANONYMOUS;
}
/**
* Generate a key value based on existing values
*
* @param int $pad Amount to add to the maximum value
* @return int Key value
*/
function auto_id($pad = 0)
{
global $auto_id, $convert_row;
if (!empty($convert_row['max_id']))
{
return $convert_row['max_id'] + $pad;
}
return $auto_id + $pad;
}
/**
* Convert a boolean into the appropriate phpBB constant indicating whether the user is active
*/
function set_user_type($user_active)
{
return ($user_active) ? USER_NORMAL : USER_INACTIVE;
}
/**
* Convert a value from minutes to hours
*/
function minutes_to_hours($minutes)
{
return ($minutes / 3600);
}
/**
* Return the group_id for a given group name
*/
function get_group_id($group_name)
{
global $db, $group_mapping;
if (empty($group_mapping))
{
$sql = 'SELECT group_name, group_id
FROM ' . GROUPS_TABLE;
$result = $db->sql_query($sql);
$group_mapping = array();
while ($row = $db->sql_fetchrow($result))
{
$group_mapping[strtoupper($row['group_name'])] = (int) $row['group_id'];
}
$db->sql_freeresult($result);
}
if (!sizeof($group_mapping))
{
add_default_groups();
return get_group_id($group_name);
}
if (isset($group_mapping[strtoupper($group_name)]))
{
return $group_mapping[strtoupper($group_name)];
}
return $group_mapping['REGISTERED'];
}
/**
* Generate the email hash stored in the users table
*
* Note: Deprecated, calls should directly go to phpbb_email_hash()
*/
function gen_email_hash($email)
{
return phpbb_email_hash($email);
}
/**
* Convert a boolean into the appropriate phpBB constant indicating whether the topic is locked
*/
function is_topic_locked($bool)
{
return (!empty($bool)) ? ITEM_LOCKED : ITEM_UNLOCKED;
}
/**
* Generate a bbcode_uid value
*/
function make_uid($timestamp)
{
static $last_timestamp, $last_uid;
if (empty($last_timestamp) || $timestamp != $last_timestamp)
{
$last_uid = substr(base_convert(unique_id(), 16, 36), 0, BBCODE_UID_LEN);
}
$last_timestamp = $timestamp;
return $last_uid;
}
/**
* Validate a website address
*/
function validate_website($url)
{
if ($url === 'http://')
{
return '';
}
else if (!preg_match('#^[a-z0-9]+://#i', $url) && strlen($url) > 0)
{
return 'http://' . $url;
}
return $url;
}
/**
* Convert nulls to zeros for fields which allowed a NULL value in the source but not the destination
*/
function null_to_zero($value)
{
return ($value === NULL) ? 0 : $value;
}
/**
* Convert nulls to empty strings for fields which allowed a NULL value in the source but not the destination
*/
function null_to_str($value)
{
return ($value === NULL) ? '' : $value;
}
// EXTENDED FUNCTIONS
/**
* Get old config value
*/
function get_config_value($config_name)
{
static $convert_config;
if (!isset($convert_config))
{
$convert_config = get_config();
}
if (!isset($convert_config[$config_name]))
{
return false;
}
return (empty($convert_config[$config_name])) ? '' : $convert_config[$config_name];
}
/**
* Convert an IP address from the hexadecimal notation to normal dotted-quad notation
*/
function decode_ip($int_ip)
{
if (!$int_ip)
{
return $int_ip;
}
$hexipbang = explode('.', chunk_split($int_ip, 2, '.'));
// Any mod changing the way ips are stored? Then we are not able to convert and enter the ip "as is" to not "destroy" anything...
if (sizeof($hexipbang) < 4)
{
return $int_ip;
}
return hexdec($hexipbang[0]) . '.' . hexdec($hexipbang[1]) . '.' . hexdec($hexipbang[2]) . '.' . hexdec($hexipbang[3]);
}
/**
* Reverse the encoding of wild-carded bans
*/
function decode_ban_ip($int_ip)
{
return str_replace('255', '*', decode_ip($int_ip));
}
/**
* Determine the MIME-type of a specified filename
* This does not actually inspect the file, but simply uses the file extension
*/
function mimetype($filename)
{
if (!preg_match('/\.([a-z0-9]+)$/i', $filename, $m))
{
return 'application/octet-stream';
}
switch (strtolower($m[1]))
{
case 'zip': return 'application/zip';
case 'jpeg': return 'image/jpeg';
case 'jpg': return 'image/jpeg';
case 'jpe': return 'image/jpeg';
case 'png': return 'image/png';
case 'gif': return 'image/gif';
case 'htm':
case 'html': return 'text/html';
case 'tif': return 'image/tiff';
case 'tiff': return 'image/tiff';
case 'ras': return 'image/x-cmu-raster';
case 'pnm': return 'image/x-portable-anymap';
case 'pbm': return 'image/x-portable-bitmap';
case 'pgm': return 'image/x-portable-graymap';
case 'ppm': return 'image/x-portable-pixmap';
case 'rgb': return 'image/x-rgb';
case 'xbm': return 'image/x-xbitmap';
case 'xpm': return 'image/x-xpixmap';
case 'xwd': return 'image/x-xwindowdump';
case 'z': return 'application/x-compress';
case 'gtar': return 'application/x-gtar';
case 'tgz': return 'application/x-gtar';
case 'gz': return 'application/x-gzip';
case 'tar': return 'application/x-tar';
case 'xls': return 'application/excel';
case 'pdf': return 'application/pdf';
case 'ppt': return 'application/powerpoint';
case 'rm': return 'application/vnd.rn-realmedia';
case 'wma': return 'audio/x-ms-wma';
case 'swf': return 'application/x-shockwave-flash';
case 'ief': return 'image/ief';
case 'doc':
case 'dot':
case 'wrd': return 'application/msword';
case 'ai':
case 'eps':
case 'ps': return 'application/postscript';
case 'asc':
case 'txt':
case 'c':
case 'cc':
case 'h':
case 'hh':
case 'cpp':
case 'hpp':
case 'php':
case 'php3': return 'text/plain';
default: return 'application/octet-stream';
}
}
/**
* Obtain the dimensions of all remotely hosted avatars
* This should only be called from execute_last
* There can be significant network overhead if there are a large number of remote avatars
* @todo Look at the option of allowing the user to decide whether this is called or to force the dimensions
*/
function remote_avatar_dims()
{
global $db;
$sql = 'SELECT user_id, user_avatar
FROM ' . USERS_TABLE . '
WHERE user_avatar_type = ' . AVATAR_REMOTE;
$result = $db->sql_query($sql);
$remote_avatars = array();
while ($row = $db->sql_fetchrow($result))
{
$remote_avatars[(int) $row['user_id']] = $row['user_avatar'];
}
$db->sql_freeresult($result);
foreach ($remote_avatars as $user_id => $avatar)
{
$width = (int) get_remote_avatar_dim($avatar, 0);
$height = (int) get_remote_avatar_dim($avatar, 1);
$sql = 'UPDATE ' . USERS_TABLE . '
SET user_avatar_width = ' . (int) $width . ', user_avatar_height = ' . (int) $height . '
WHERE user_id = ' . $user_id;
$db->sql_query($sql);
}
}
function import_avatar_gallery($gallery_name = '', $subdirs_as_galleries = false)
{
global $config, $convert, $user;
$relative_path = empty($convert->convertor['source_path_absolute']);
// check for trailing slash
if (rtrim($convert->convertor['avatar_gallery_path'], '/') === '')
{
$convert->p_master->error(sprintf($user->lang['CONV_ERROR_NO_GALLERY_PATH'], 'import_avatar_gallery()'), __LINE__, __FILE__);
}
$src_path = relative_base(path($convert->convertor['avatar_gallery_path'], $relative_path), $relative_path);
if (is_dir($src_path))
{
// Do not die on failure... safe mode restrictions may be in effect.
copy_dir($convert->convertor['avatar_gallery_path'], path($config['avatar_gallery_path']) . $gallery_name, !$subdirs_as_galleries, false, false, $relative_path);
// only doing 1 level deep. (ibf 1.x)
// notes: ibf has 2 tiers: directly in the avatar directory for base gallery (handled in the above statement), plus subdirs(handled below).
// recursive subdirs ignored. -- i don't know if other forums support recursive galleries. if they do, this following code could be upgraded to be recursive.
if ($subdirs_as_galleries)
{
$dirlist = array();
if ($handle = @opendir($src_path))
{
while ($entry = readdir($handle))
{
if ($entry[0] == '.' || $entry == 'CVS' || $entry == 'index.htm')
{
continue;
}
if (is_dir($src_path . $entry))
{
$dirlist[] = $entry;
}
}
closedir($handle);
}
else if ($dir = @dir($src_path))
{
while ($entry = $dir->read())
{
if ($entry[0] == '.' || $entry == 'CVS' || $entry == 'index.htm')
{
continue;
}
if (is_dir($src_path . $entry))
{
$dirlist[] = $entry;
}
}
$dir->close();
}
for ($i = 0; $i < sizeof($dirlist); ++$i)
{
$dir = $dirlist[$i];
// Do not die on failure... safe mode restrictions may be in effect.
copy_dir(path($convert->convertor['avatar_gallery_path'], $relative_path) . $dir, path($config['avatar_gallery_path']) . $dir, true, false, false, $relative_path);
}
}
}
}
function import_attachment_files($category_name = '')
{
global $config, $convert, $db, $user;
$sql = 'SELECT config_value AS upload_path
FROM ' . CONFIG_TABLE . "
WHERE config_name = 'upload_path'";
$result = $db->sql_query($sql);
$config['upload_path'] = $db->sql_fetchfield('upload_path');
$db->sql_freeresult($result);
$relative_path = empty($convert->convertor['source_path_absolute']);
if (empty($convert->convertor['upload_path']))
{
$convert->p_master->error(sprintf($user->lang['CONV_ERROR_NO_UPLOAD_DIR'], 'import_attachment_files()'), __LINE__, __FILE__);
}
if (is_dir(relative_base(path($convert->convertor['upload_path'], $relative_path), $relative_path)))
{
copy_dir($convert->convertor['upload_path'], path($config['upload_path']) . $category_name, true, false, true, $relative_path);
}
}
function attachment_forum_perms($forum_id)
{
if (!is_array($forum_id))
{
$forum_id = array($forum_id);
}
return serialize($forum_id);
}
// base64todec function
// -> from php manual?
function base64_unpack($string)
{
$chars = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ+-';
$base = strlen($chars);
$length = strlen($string);
$number = 0;
for ($i = 1; $i <= $length; $i++)
{
$pos = $length - $i;
$operand = strpos($chars, substr($string, $pos, 1));
$exponent = pow($base, $i-1);
$dec_value = $operand * $exponent;
$number += $dec_value;
}
return $number;
}
function _import_check($config_var, $source, $use_target)
{
global $convert, $config;
$result = array(
'orig_source' => $source,
'copied' => false,
'relative_path' => (empty($convert->convertor['source_path_absolute'])) ? true : false,
);
// copy file will prepend $phpBB_root_path
$target = $config[$config_var] . '/' . utf8_basename(($use_target === false) ? $source : $use_target);
if (!empty($convert->convertor[$config_var]) && strpos($source, $convert->convertor[$config_var]) !== 0)
{
$source = $convert->convertor[$config_var] . $source;
}
$result['source'] = $source;
if (file_exists(relative_base($source, $result['relative_path'], __LINE__, __FILE__)))
{
$result['copied'] = copy_file($source, $target, false, false, $result['relative_path']);
}
if ($result['copied'])
{
$result['target'] = utf8_basename($target);
}
else
{
$result['target'] = ($use_target !== false) ? $result['orig_source'] : utf8_basename($target);
}
return $result;
}
function import_attachment($source, $use_target = false)
{
if (empty($source))
{
return '';
}
global $convert, $config, $user;
// check for trailing slash
if (rtrim($convert->convertor['upload_path'], '/') === '')
{
$convert->p_master->error(sprintf($user->lang['CONV_ERROR_NO_UPLOAD_DIR'], 'import_attachment()'), __LINE__, __FILE__);
}
$result = _import_check('upload_path', $source, $use_target);
if ($result['copied'])
{
// Thumbnails?
if (is_array($convert->convertor['thumbnails']))
{
$thumb_dir = $convert->convertor['thumbnails'][0];
$thumb_prefix = $convert->convertor['thumbnails'][1];
$thumb_source = $thumb_dir . $thumb_prefix . utf8_basename($result['source']);
if (strpos($thumb_source, $convert->convertor['upload_path']) !== 0)
{
$thumb_source = $convert->convertor['upload_path'] . $thumb_source;
}
$thumb_target = $config['upload_path'] . '/thumb_' . $result['target'];
if (file_exists(relative_base($thumb_source, $result['relative_path'], __LINE__, __FILE__)))
{
copy_file($thumb_source, $thumb_target, false, false, $result['relative_path']);
}
}
}
return $result['target'];
}
function import_rank($source, $use_target = false)
{
if (empty($source))
{
return '';
}
global $convert, $user;
if (!isset($convert->convertor['ranks_path']))
{
$convert->p_master->error(sprintf($user->lang['CONV_ERROR_NO_RANKS_PATH'], 'import_rank()'), __LINE__, __FILE__);
}
$result = _import_check('ranks_path', $source, $use_target);
return $result['target'];
}
function import_smiley($source, $use_target = false)
{
if (empty($source))
{
return '';
}
global $convert, $user;
// check for trailing slash
if (rtrim($convert->convertor['smilies_path'], '/') === '')
{
$convert->p_master->error(sprintf($user->lang['CONV_ERROR_NO_SMILIES_PATH'], 'import_smiley()'), __LINE__, __FILE__);
}
$result = _import_check('smilies_path', $source, $use_target);
return $result['target'];
}
/*
*/
function import_avatar($source, $use_target = false, $user_id = false)
{
if (empty($source) || preg_match('#^https?:#i', $source) || preg_match('#blank\.(gif|png)$#i', $source))
{
return;
}
global $convert, $config, $user;
// check for trailing slash
if (rtrim($convert->convertor['avatar_path'], '/') === '')
{
$convert->p_master->error(sprintf($user->lang['CONV_ERROR_NO_AVATAR_PATH'], 'import_avatar()'), __LINE__, __FILE__);
}
if ($use_target === false && $user_id !== false)
{
$use_target = $config['avatar_salt'] . '_' . $user_id . '.' . substr(strrchr($source, '.'), 1);
}
_import_check('avatar_path', $source, $use_target);
return ((!empty($user_id)) ? $user_id : $use_target) . '.' . substr(strrchr($source, '.'), 1);
}
/**
* @todo all image dimension functions below (there are a *lot*) should get revisited and converted to one or two functions (no more needed, really).
*/
/**
* Calculate the size of the specified image
* Called from the following functions for calculating the size of specific image types
*/
function get_image_dim($source)
{
if (empty($source))
{
return array(0, 0);
}
global $convert;
$relative_path = empty($convert->convertor['source_path_absolute']);
if (file_exists(relative_base($source, $relative_path)))
{
$image = relative_base($source, $relative_path);
return @getimagesize($image);
}
return false;
}
/**
* Obtain the width of the specified smilie
*/
function get_smiley_width($src)
{
return get_smiley_dim($src, 0);
}
/**
* Obtain the height of the specified smilie
*/
function get_smiley_height($src)
{
return get_smiley_dim($src, 1);
}
/**
* Obtain the size of the specified smilie (using the cache if possible) and cache the value
*/
function get_smiley_dim($source, $axis)
{
if (empty($source))
{
return 15;
}
static $smiley_cache = array();
if (isset($smiley_cache[$source]))
{
return $smiley_cache[$source][$axis];
}
global $convert, $user;
$orig_source = $source;
if (!isset($convert->convertor['smilies_path']))
{
$convert->p_master->error(sprintf($user->lang['CONV_ERROR_NO_SMILIES_PATH'], 'get_smiley_dim()'), __LINE__, __FILE__);
}
if (!empty($convert->convertor['smilies_path']) && strpos($source, $convert->convertor['smilies_path']) !== 0)
{
$source = $convert->convertor['smilies_path'] . $source;
}
$smiley_cache[$orig_source] = get_image_dim($source);
if (empty($smiley_cache[$orig_source]) || empty($smiley_cache[$orig_source][0]) || empty($smiley_cache[$orig_source][1]))
{
$smiley_cache[$orig_source] = array(15, 15);
return 15;
}
return $smiley_cache[$orig_source][$axis];
}
/**
* Obtain the width of the specified avatar
*/
function get_avatar_width($src, $func = false, $arg1 = false, $arg2 = false)
{
return get_avatar_dim($src, 0, $func, $arg1, $arg2);
}
/**
* Obtain the height of the specified avatar
*/
function get_avatar_height($src, $func = false, $arg1 = false, $arg2 = false)
{
return get_avatar_dim($src, 1, $func, $arg1, $arg2);
}
/**
*/
function get_avatar_dim($src, $axis, $func = false, $arg1 = false, $arg2 = false)
{
$avatar_type = AVATAR_UPLOAD;
if ($func)
{
if ($arg1 || $arg2)
{
$ary = array($arg1);
if ($arg2)
{
$ary[] = $arg2;
}
$avatar_type = call_user_func_array($func, $ary);
}
else
{
$avatar_type = call_user_func($func);
}
}
switch ($avatar_type)
{
case AVATAR_UPLOAD:
return get_upload_avatar_dim($src, $axis);
break;
case AVATAR_GALLERY:
return get_gallery_avatar_dim($src, $axis);
break;
case AVATAR_REMOTE:
// see notes on this functions usage and (hopefully) model $func to avoid this accordingly
return get_remote_avatar_dim($src, $axis);
break;
default:
$default_x = (defined('DEFAULT_AVATAR_X_CUSTOM')) ? DEFAULT_AVATAR_X_CUSTOM : DEFAULT_AVATAR_X;
$default_y = (defined('DEFAULT_AVATAR_Y_CUSTOM')) ? DEFAULT_AVATAR_Y_CUSTOM : DEFAULT_AVATAR_Y;
return $axis ? $default_y : $default_x;
break;
}
}
/**
* Obtain the size of the specified uploaded avatar (using the cache if possible) and cache the value
*/
function get_upload_avatar_dim($source, $axis)
{
static $cachedims = false;
static $cachekey = false;
if (empty($source))
{
return 0;
}
if ($cachekey == $source)
{
return $cachedims[$axis];
}
if (substr($source, 0, 7) == 'upload:')
{
$source = substr($source, 7);
}
global $convert, $user;
if (!isset($convert->convertor['avatar_path']))
{
$convert->p_master->error(sprintf($user->lang['CONV_ERROR_NO_AVATAR_PATH'], 'get_upload_avatar_dim()'), __LINE__, __FILE__);
}
if (!empty($convert->convertor['avatar_path']) && strpos($source, $convert->convertor['avatar_path']) !== 0)
{
$source = path($convert->convertor['avatar_path'], empty($convert->convertor['source_path_absolute'])) . $source;
}
$cachedims = get_image_dim($source);
if (empty($cachedims) || empty($cachedims[0]) || empty($cachedims[1]))
{
$default_x = (defined('DEFAULT_AVATAR_X_CUSTOM')) ? DEFAULT_AVATAR_X_CUSTOM : DEFAULT_AVATAR_X;
$default_y = (defined('DEFAULT_AVATAR_Y_CUSTOM')) ? DEFAULT_AVATAR_Y_CUSTOM : DEFAULT_AVATAR_Y;
$cachedims = array($default_x, $default_y);
}
return $cachedims[$axis];
}
/**
* Obtain the size of the specified gallery avatar (using the cache if possible) and cache the value
*/
function get_gallery_avatar_dim($source, $axis)
{
if (empty($source))
{
return 0;
}
static $avatar_cache = array();
if (isset($avatar_cache[$source]))
{
return $avatar_cache[$source][$axis];
}
global $convert, $user;
$orig_source = $source;
if (!isset($convert->convertor['avatar_gallery_path']))
{
$convert->p_master->error(sprintf($user->lang['CONV_ERROR_NO_GALLERY_PATH'], 'get_gallery_avatar_dim()'), __LINE__, __FILE__);
}
if (!empty($convert->convertor['avatar_gallery_path']) && strpos($source, $convert->convertor['avatar_gallery_path']) !== 0)
{
$source = path($convert->convertor['avatar_gallery_path'], empty($convert->convertor['source_path_absolute'])) . $source;
}
$avatar_cache[$orig_source] = get_image_dim($source);
if (empty($avatar_cache[$orig_source]) || empty($avatar_cache[$orig_source][0]) || empty($avatar_cache[$orig_source][1]))
{
$default_x = (defined('DEFAULT_AVATAR_X_CUSTOM')) ? DEFAULT_AVATAR_X_CUSTOM : DEFAULT_AVATAR_X;
$default_y = (defined('DEFAULT_AVATAR_Y_CUSTOM')) ? DEFAULT_AVATAR_Y_CUSTOM : DEFAULT_AVATAR_Y;
$avatar_cache[$orig_source] = array($default_x, $default_y);
}
return $avatar_cache[$orig_source][$axis];
}
/**
* Obtain the size of the specified remote avatar (using the cache if possible) and cache the value
* Whilst it's unlikely that remote avatars will be duplicated, it is possible so caching seems the best option
* This should only be called from a post processing step due to the possibility of network timeouts
*/
function get_remote_avatar_dim($src, $axis)
{
if (empty($src))
{
return 0;
}
static $remote_avatar_cache = array();
// an ugly hack: we assume that the dimensions of each remote avatar are accessed exactly twice (x and y)
if (isset($remote_avatar_cache[$src]))
{
$retval = $remote_avatar_cache[$src][$axis];
unset($remote_avatar_cache);
return $retval;
}
$url_info = @parse_url($src);
if (empty($url_info['host']))
{
return 0;
}
$host = $url_info['host'];
$port = (isset($url_info['port'])) ? $url_info['port'] : 0;
$protocol = (isset($url_info['scheme'])) ? $url_info['scheme'] : 'http';
if (empty($port))
{
switch (strtolower($protocol))
{
case 'ftp':
$port = 21;
break;
case 'https':
$port = 443;
break;
default:
$port = 80;
}
}
$timeout = @ini_get('default_socket_timeout');
@ini_set('default_socket_timeout', 2);
// We're just trying to reach the server to avoid timeouts
$fp = @fsockopen($host, $port, $errno, $errstr, 1);
if ($fp)
{
$remote_avatar_cache[$src] = @getimagesize($src);
fclose($fp);
}
$default_x = (defined('DEFAULT_AVATAR_X_CUSTOM')) ? DEFAULT_AVATAR_X_CUSTOM : DEFAULT_AVATAR_X;
$default_y = (defined('DEFAULT_AVATAR_Y_CUSTOM')) ? DEFAULT_AVATAR_Y_CUSTOM : DEFAULT_AVATAR_Y;
$default = array($default_x, $default_y);
if (empty($remote_avatar_cache[$src]) || empty($remote_avatar_cache[$src][0]) || empty($remote_avatar_cache[$src][1]))
{
$remote_avatar_cache[$src] = $default;
}