/**
* Changes a group avatar's filename to conform to the naming scheme
*/
function group_correct_avatar($group_id, $old_entry)
{
    global $config, $db, $phpbb_root_path;
    $group_id = (int) $group_id;
    $ext = substr(strrchr($old_entry, '.'), 1);
    $old_filename = get_avatar_filename($old_entry);
    $new_filename = $config['avatar_salt'] . "_g{$group_id}.{$ext}";
    $new_entry = 'g' . $group_id . '_' . substr(time(), -5) . ".{$ext}";
    $avatar_path = $phpbb_root_path . $config['avatar_path'];
    if (@rename($avatar_path . '/' . $old_filename, $avatar_path . '/' . $new_filename)) {
        $sql = 'UPDATE ' . GROUPS_TABLE . '
			SET group_avatar = \'' . $db->sql_escape($new_entry) . "'\n\t\t\tWHERE group_id = {$group_id}";
        $db->sql_query($sql);
    }
}

/**
 * Downloads the character portrait from EVE as the new user's avatar.
 * @param mixed $id The ID of the character whose portrait is being retrieved.
 * @param int $user_id User ID of the account to apply the avatar to.  Optional.  Used during registration. 
 * @return filename for the newly downloaded avatar.
 */
function eveapi_getPortrait($id, $user_id = false)
{
    global $config, $user, $phpbb_root_path;
    $user_id = $user_id ? $user_id : $user->data['user_id'];
    $input = 'http://image.eveonline.com/Character/' . $id . '_256.jpg';
    $db_filename = $user_id . "_" . time() . ".jpg";
    $filename = get_avatar_filename($db_filename);
    $output = !defined('ADMIN_START') ? $config['avatar_path'] . "/" . $filename : $phpbb_root_path . $config['avatar_path'] . "/" . $filename;
    $fgc = curl_file_get_contents($input);
    if (!$fgc) {
        return false;
    }
    if (file_exists($output)) {
        unlink($output);
    }
    file_put_contents($output, $fgc);
    return $db_filename;
}

 public function get_avatar_real_filename($user_avatar)
 {
     global $phpbb_root_path, $phpEx, $db, $config, $user, $auth, $cache, $template;
     $this->init(false);
     require_once $phpbb_root_path . 'includes/functions_user.' . $phpEx;
     $rv = null;
     if (isset($user_avatar) && strlen($user_avatar)) {
         $rv = get_avatar_filename($user_avatar);
     }
     return $rv;
 }