init_error = true; return; } $this->filename = $upload_ary['tmp_name']; $this->filesize = $upload_ary['size']; $name = trim(htmlspecialchars(basename($upload_ary['name']))); $this->realname = $this->uploadname = (STRIP) ? stripslashes($name) : $name; $this->mimetype = $upload_ary['type']; // Opera adds the name to the mime type $this->mimetype = (strpos($this->mimetype, '; name') !== false) ? str_replace(strstr($this->mimetype, '; name'), '', $this->mimetype) : $this->mimetype; if (!$this->mimetype) { $this->mimetype = 'application/octetstream'; } $this->extension = strtolower($this->get_extension($this->realname)); // Try to get real filesize from temporary folder (not always working) ;) $this->filesize = (@filesize($this->filename)) ? @filesize($this->filename) : $this->filesize; $this->width = $this->height = 0; $this->file_moved = false; $this->local = (isset($upload_ary['local_mode'])) ? true : false; $this->upload = $upload_namespace; } /** * Cleans destination filename * * @param real|unique|unique_ext $mode real creates a realname, filtering some characters, lowering every character. Unique creates an unique filename * @param string $prefix Prefix applied to filename * @access public */ function clean_filename($mode = 'unique', $prefix = '', $user_id = '') { if ($this->init_error) { return; } switch ($mode) { case 'real': // Remove every extension from filename (to not let the mime bug being exposed) if (strpos($this->realname, '.') !== false) { $this->realname = substr($this->realname, 0, strpos($this->realname, '.')); } // Replace any chars which may cause us problems with _ $bad_chars = array("'", "\\", ' ', '/', ':', '*', '?', '"', '<', '>', '|'); $this->realname = rawurlencode(str_replace($bad_chars, '_', strtolower($this->realname))); $this->realname = preg_replace("/%(\w{2})/", '_', $this->realname); $this->realname = $prefix . $this->realname . '.' . $this->extension; break; case 'unique': $this->realname = $prefix . md5(unique_id()); break; case 'avatar': $this->extension = strtolower($this->extension); $this->realname = $prefix . $user_id . '.' . $this->extension; break; case 'unique_ext': default: $this->realname = $prefix . md5(unique_id()) . '.' . $this->extension; break; } } /** * Get property from file object */ function get($property) { if ($this->init_error || !isset($this->$property)) { return false; } return $this->$property; } /** * Check if file is an image (mimetype) * * @return true if it is an image, false if not */ function is_image() { return (strpos($this->mimetype, 'image/') !== false) ? true : false; } /** * Check if the file got correctly uploaded * * @return true if it is a valid upload, false if not */ function is_uploaded() { if (!$this->local && !is_uploaded_file($this->filename)) { return false; } if ($this->local && !file_exists($this->filename)) { return false; } return true; } /** * Remove file */ function remove() { if ($this->file_moved) { @unlink($this->destination_file); } } /** * Get file extension */ function get_extension($filename) { if (strpos($filename, '.') === false) { return ''; } $filename = explode('.', $filename); return array_pop($filename); } /** * Get mimetype. Utilize mime_content_type if the function exist. * Not used at the moment... */ function get_mimetype($filename) { $mimetype = ''; if (function_exists('mime_content_type')) { $mimetype = mime_content_type($filename); } // Some browsers choke on a mimetype of application/octet-stream if (!$mimetype || $mimetype == 'application/octet-stream') { $mimetype = 'application/octetstream'; } return $mimetype; } /** * Get filesize */ function get_filesize($filename) { return @filesize($filename); } /** * Check the first 256 bytes for forbidden content */ function check_content($disallowed_content) { if (empty($disallowed_content)) { return true; } $fp = @fopen($this->filename, 'rb'); if ($fp !== false) { $ie_mime_relevant = fread($fp, 256); fclose($fp); foreach ($disallowed_content as $forbidden) { if (stripos($ie_mime_relevant, '<' . $forbidden) !== false) { return false; } } } return true; } /** * Move file to destination folder * The phpbb_root_path variable will be applied to the destination path * * @param string $destination_path Destination path, for example $config['avatar_path'] * @param bool $overwrite If set to true, an already existing file will be overwritten * @param string $chmod Permission mask for chmodding the file after a successful move. The mode entered here reflects the mode defined by {@link phpbb_chmod()} * * @access public */ function move_file($destination, $overwrite = false, $skip_image_check = false, $chmod = false) { global $user, $phpbb_root_path; if (sizeof($this->error)) { return false; } $chmod = ($chmod === false) ? CHMOD_READ | CHMOD_WRITE : $chmod; // We need to trust the admin in specifying valid upload directories and an attacker not being able to overwrite it... $this->destination_path = $phpbb_root_path . $destination; // Check if the destination path exist... if (!file_exists($this->destination_path)) { @unlink($this->filename); return false; } $upload_mode = (@ini_get('open_basedir') || @ini_get('safe_mode') || strtolower(@ini_get('safe_mode')) == 'on') ? 'move' : 'copy'; $upload_mode = ($this->local) ? 'local' : $upload_mode; $this->destination_file = $this->destination_path . '/' . basename($this->realname); // Check if the file already exist, else there is something wrong... if (file_exists($this->destination_file) && !$overwrite) { @unlink($this->filename); } else { if (file_exists($this->destination_file)) { @unlink($this->destination_file); } switch ($upload_mode) { case 'copy': if (!@copy($this->filename, $this->destination_file)) { if (!@move_uploaded_file($this->filename, $this->destination_file)) { $this->error[] = sprintf($user->lang[$this->upload->error_prefix . 'GENERAL_UPLOAD_ERROR'], $this->destination_file); return false; } } @unlink($this->filename); break; case 'move': if (!@move_uploaded_file($this->filename, $this->destination_file)) { if (!@copy($this->filename, $this->destination_file)) { $this->error[] = sprintf($user->lang[$this->upload->error_prefix . 'GENERAL_UPLOAD_ERROR'], $this->destination_file); return false; } } @unlink($this->filename); break; case 'local': if (!@copy($this->filename, $this->destination_file)) { $this->error[] = sprintf($user->lang[$this->upload->error_prefix . 'GENERAL_UPLOAD_ERROR'], $this->destination_file); return false; } @unlink($this->filename); break; } phpbb_chmod($this->destination_file, $chmod); } // Try to get real filesize from destination folder $this->filesize = (@filesize($this->destination_file)) ? @filesize($this->destination_file) : $this->filesize; if ($this->is_image() && !$skip_image_check) { $this->width = $this->height = 0; if (($this->image_info = @getimagesize($this->destination_file)) !== false) { $this->width = $this->image_info[0]; $this->height = $this->image_info[1]; if (!empty($this->image_info['mime'])) { $this->mimetype = $this->image_info['mime']; } // Check image type $types = $this->upload->image_types(); if (!isset($types[$this->image_info[2]]) || !in_array($this->extension, $types[$this->image_info[2]])) { if (!isset($types[$this->image_info[2]])) { $this->error[] = sprintf($user->lang['IMAGE_FILETYPE_INVALID'], $this->image_info[2], $this->mimetype); } else { $this->error[] = sprintf($user->lang['IMAGE_FILETYPE_MISMATCH'], $types[$this->image_info[2]][0], $this->extension); } } // Make sure the dimensions match a valid image if (empty($this->width) || empty($this->height)) { $this->error[] = $user->lang['ATTACHED_IMAGE_NOT_IMAGE']; } } else { $this->error[] = $user->lang['UNABLE_GET_IMAGE_SIZE']; } } $this->file_moved = true; $this->additional_checks(); unset($this->upload); return true; } /** * Performing additional checks */ function additional_checks() { global $user; if (!$this->file_moved) { return false; } // Filesize is too big or it's 0 if it was larger than the maxsize in the upload form if ($this->upload->max_filesize && ($this->get('filesize') > $this->upload->max_filesize || $this->filesize == 0)) { $size_lang = ($this->upload->max_filesize >= 1048576) ? $user->lang['MIB'] : (($this->upload->max_filesize >= 1024) ? $user->lang['KIB'] : $user->lang['BYTES'] ); $max_filesize = get_formatted_filesize($this->upload->max_filesize, false); $this->error[] = sprintf($user->lang[$this->upload->error_prefix . 'WRONG_FILESIZE'], $max_filesize, $size_lang); return false; } if (!$this->upload->valid_dimensions($this)) { $this->error[] = sprintf($user->lang[$this->upload->error_prefix . 'WRONG_SIZE'], $this->upload->min_width, $this->upload->min_height, $this->upload->max_width, $this->upload->max_height, $this->width, $this->height); return false; } return true; } } /** * Class for assigning error messages before a real filespec class can be assigned * * @package phpBB3 */ class fileerror extends filespec { function fileerror($error_msg) { $this->error[] = $error_msg; } } /** * File upload class * Init class (all parameters optional and able to be set/overwritten separately) - scope is global and valid for all uploads * * @package phpBB3 */ class fileupload { var $allowed_extensions = array(); var $disallowed_content = array(); var $max_filesize = 0; var $min_width = 0; var $min_height = 0; var $max_width = 0; var $max_height = 0; var $error_prefix = ''; /** * Init file upload class. * * @param string $error_prefix Used error messages will get prefixed by this string * @param array $allowed_extensions Array of allowed extensions, for example array('jpg', 'jpeg', 'gif', 'png') * @param int $max_filesize Maximum filesize * @param int $min_width Minimum image width (only checked for images) * @param int $min_height Minimum image height (only checked for images) * @param int $max_width Maximum image width (only checked for images) * @param int $max_height Maximum image height (only checked for images) * */ function fileupload($error_prefix = '', $allowed_extensions = false, $max_filesize = false, $min_width = false, $min_height = false, $max_width = false, $max_height = false, $disallowed_content = false) { $this->set_allowed_extensions($allowed_extensions); $this->set_max_filesize($max_filesize); $this->set_allowed_dimensions($min_width, $min_height, $max_width, $max_height); $this->set_error_prefix($error_prefix); $this->set_disallowed_content($disallowed_content); } /** * Reset vars */ function reset_vars() { $this->max_filesize = 0; $this->min_width = $this->min_height = $this->max_width = $this->max_height = 0; $this->error_prefix = ''; $this->allowed_extensions = array(); $this->disallowed_content = array(); } /** * Set allowed extensions */ function set_allowed_extensions($allowed_extensions) { if ($allowed_extensions !== false && is_array($allowed_extensions)) { $this->allowed_extensions = $allowed_extensions; } } /** * Set allowed dimensions */ function set_allowed_dimensions($min_width, $min_height, $max_width, $max_height) { $this->min_width = (int) $min_width; $this->min_height = (int) $min_height; $this->max_width = (int) $max_width; $this->max_height = (int) $max_height; } /** * Set maximum allowed filesize */ function set_max_filesize($max_filesize) { if ($max_filesize !== false && (int) $max_filesize) { $this->max_filesize = (int) $max_filesize; } } /** * Set disallowed strings */ function set_disallowed_content($disallowed_content) { if ($disallowed_content !== false && is_array($disallowed_content)) { $this->disallowed_content = $disallowed_content; } } /** * Set error prefix */ function set_error_prefix($error_prefix) { $this->error_prefix = $error_prefix; } /** * Form upload method * Upload file from users harddisk * * @param string $form_name Form name assigned to the file input field (if it is an array, the key has to be specified) * @return object $file Object "filespec" is returned, all further operations can be done with this object * @access public */ function form_upload($form_name) { global $user; unset($_FILES[$form_name]['local_mode']); $file = new filespec($_FILES[$form_name], $this); if ($file->init_error) { $file->error[] = ''; return $file; } // Error array filled? if (isset($_FILES[$form_name]['error'])) { $error = $this->assign_internal_error($_FILES[$form_name]['error']); if ($error !== false) { $file->error[] = $error; return $file; } } // Check if empty file got uploaded (not catched by is_uploaded_file) if (isset($_FILES[$form_name]['size']) && $_FILES[$form_name]['size'] == 0) { $file->error[] = $user->lang[$this->error_prefix . 'EMPTY_FILEUPLOAD']; return $file; } // PHP Upload filesize exceeded if ($file->get('filename') == 'none') { $file->error[] = (@ini_get('upload_max_filesize') == '') ? $user->lang[$this->error_prefix . 'PHP_SIZE_NA'] : sprintf($user->lang[$this->error_prefix . 'PHP_SIZE_OVERRUN'], @ini_get('upload_max_filesize')); return $file; } // Not correctly uploaded if (!$file->is_uploaded()) { $file->error[] = $user->lang[$this->error_prefix . 'NOT_UPLOADED']; return $file; } $this->common_checks($file); return $file; } /** * Move file from another location to phpBB */ function local_upload($source_file, $filedata = false) { global $user; $form_name = 'local'; $_FILES[$form_name]['local_mode'] = true; $_FILES[$form_name]['tmp_name'] = $source_file; if ($filedata === false) { $_FILES[$form_name]['name'] = basename($source_file); $_FILES[$form_name]['size'] = 0; $mimetype = ''; if (function_exists('mime_content_type')) { $mimetype = mime_content_type($source_file); } // Some browsers choke on a mimetype of application/octet-stream if (!$mimetype || $mimetype == 'application/octet-stream') { $mimetype = 'application/octetstream'; } $_FILES[$form_name]['type'] = $mimetype; } else { $_FILES[$form_name]['name'] = $filedata['realname']; $_FILES[$form_name]['size'] = $filedata['size']; $_FILES[$form_name]['type'] = $filedata['type']; } $file = new filespec($_FILES[$form_name], $this); if ($file->init_error) { $file->error[] = ''; return $file; } if (isset($_FILES[$form_name]['error'])) { $error = $this->assign_internal_error($_FILES[$form_name]['error']); if ($error !== false) { $file->error[] = $error; return $file; } } // PHP Upload filesize exceeded if ($file->get('filename') == 'none') { $file->error[] = (@ini_get('upload_max_filesize') == '') ? $user->lang[$this->error_prefix . 'PHP_SIZE_NA'] : sprintf($user->lang[$this->error_prefix . 'PHP_SIZE_OVERRUN'], @ini_get('upload_max_filesize')); return $file; } // Not correctly uploaded if (!$file->is_uploaded()) { $file->error[] = $user->lang[$this->error_prefix . 'NOT_UPLOADED']; return $file; } $this->common_checks($file); return $file; } /** * Remote upload method * Uploads file from given url * * @param string $upload_url URL pointing to file to upload, for example http://www.foobar.com/example.gif * @return object $file Object "filespec" is returned, all further operations can be done with this object * @access public */ function remote_upload($upload_url) { global $user, $phpbb_root_path; $upload_ary = array(); $upload_ary['local_mode'] = true; if (!preg_match('#^(https?://).*?\.(' . implode('|', $this->allowed_extensions) . ')$#i', $upload_url, $match)) { $file = new fileerror($user->lang[$this->error_prefix . 'URL_INVALID']); return $file; } if (empty($match[2])) { $file = new fileerror($user->lang[$this->error_prefix . 'URL_INVALID']); return $file; } $url = parse_url($upload_url); $host = $url['host']; $path = $url['path']; $port = (!empty($url['port'])) ? (int) $url['port'] : 80; $upload_ary['type'] = 'application/octet-stream'; $url['path'] = explode('.', $url['path']); $ext = array_pop($url['path']); $url['path'] = implode('', $url['path']); $upload_ary['name'] = basename($url['path']) . (($ext) ? '.' . $ext : ''); $filename = $url['path']; $filesize = 0; $errno = 0; $errstr = ''; if (!($fsock = @fsockopen($host, $port, $errno, $errstr))) { $file = new fileerror($user->lang[$this->error_prefix . 'NOT_UPLOADED']); return $file; } // Make sure $path not beginning with / if (strpos($path, '/') === 0) { $path = substr($path, 1); } fputs($fsock, 'GET /' . $path . " HTTP/1.1\r\n"); fputs($fsock, "HOST: " . $host . "\r\n"); fputs($fsock, "Connection: close\r\n\r\n"); $get_info = false; $data = ''; while (!@feof($fsock)) { if ($get_info) { $data .= @fread($fsock, 1024); } else { $line = @fgets($fsock, 1024); if ($line == "\r\n") { $get_info = true; } else { if (stripos($line, 'content-type: ') !== false) { $upload_ary['type'] = rtrim(str_replace('content-type: ', '', strtolower($line))); } else if (stripos($line, '404 not found') !== false) { $file = new fileerror($user->lang[$this->error_prefix . 'URL_NOT_FOUND']); return $file; } } } } @fclose($fsock); if (empty($data)) { $file = new fileerror($user->lang[$this->error_prefix . 'EMPTY_REMOTE_DATA']); return $file; } $tmp_path = (!@ini_get('safe_mode') || strtolower(@ini_get('safe_mode')) == 'off') ? false : $phpbb_root_path . 'cache'; $filename = tempnam($tmp_path, unique_id() . '-'); if (!($fp = @fopen($filename, 'wb'))) { $file = new fileerror($user->lang[$this->error_prefix . 'NOT_UPLOADED']); return $file; } $upload_ary['size'] = fwrite($fp, $data); fclose($fp); unset($data); $upload_ary['tmp_name'] = $filename; $file = new filespec($upload_ary, $this); $this->common_checks($file); return $file; } /** * Assign internal error * @access private */ function assign_internal_error($errorcode) { global $user; switch ($errorcode) { case 1: $error = (@ini_get('upload_max_filesize') == '') ? $user->lang[$this->error_prefix . 'PHP_SIZE_NA'] : sprintf($user->lang[$this->error_prefix . 'PHP_SIZE_OVERRUN'], @ini_get('upload_max_filesize')); break; case 2: $size_lang = ($this->max_filesize >= 1048576) ? $user->lang['MIB'] : (($this->max_filesize >= 1024) ? $user->lang['KIB'] : $user->lang['BYTES']); $max_filesize = get_formatted_filesize($this->max_filesize, false); $error = sprintf($user->lang[$this->error_prefix . 'WRONG_FILESIZE'], $max_filesize, $size_lang); break; case 3: $error = $user->lang[$this->error_prefix . 'PARTIAL_UPLOAD']; break; case 4: $error = $user->lang[$this->error_prefix . 'NOT_UPLOADED']; break; case 6: $error = 'Temporary folder could not be found. Please check your PHP installation.'; break; default: $error = false; break; } return $error; } /** * Perform common checks */ function common_checks(&$file) { global $user; // Filesize is too big or it's 0 if it was larger than the maxsize in the upload form if ($this->max_filesize && ($file->get('filesize') > $this->max_filesize || $file->get('filesize') == 0)) { $size_lang = ($this->max_filesize >= 1048576) ? $user->lang['MIB'] : (($this->max_filesize >= 1024) ? $user->lang['KIB'] : $user->lang['BYTES']); $max_filesize = get_formatted_filesize($this->max_filesize, false); $file->error[] = sprintf($user->lang[$this->error_prefix . 'WRONG_FILESIZE'], $max_filesize, $size_lang); } // check Filename if (preg_match("#[\\/:*?\"<>|]#i", $file->get('realname'))) { $file->error[] = sprintf($user->lang[$this->error_prefix . 'INVALID_FILENAME'], $file->get('realname')); } // Invalid Extension if (!$this->valid_extension($file)) { $file->error[] = sprintf($user->lang[$this->error_prefix . 'DISALLOWED_EXTENSION'], $file->get('extension')); } // MIME Sniffing if (!$this->valid_content($file)) { $file->error[] = sprintf($user->lang[$this->error_prefix . 'DISALLOWED_CONTENT']); } } /** * Check for allowed extension */ function valid_extension(&$file) { return (in_array($file->get('extension'), $this->allowed_extensions)) ? true : false; } /** * Check for allowed dimension */ function valid_dimensions(&$file) { if (!$this->max_width && !$this->max_height && !$this->min_width && !$this->min_height) { return true; } if (($file->get('width') > $this->max_width && $this->max_width) || ($file->get('height') > $this->max_height && $this->max_height) || ($file->get('width') < $this->min_width && $this->min_width) || ($file->get('height') < $this->min_height && $this->min_height)) { return false; } return true; } /** * Check if form upload is valid */ function is_valid($form_name) { return (isset($_FILES[$form_name]) && $_FILES[$form_name]['name'] != 'none') ? true : false; } /** * Check for allowed extension */ function valid_content(&$file) { return ($file->check_content($this->disallowed_content)); } /** * Return image type/extension mapping */ function image_types() { return array( 1 => array('gif'), 2 => array('jpg', 'jpeg'), 3 => array('png'), 4 => array('swf'), 5 => array('psd'), 6 => array('bmp'), 7 => array('tif', 'tiff'), 8 => array('tif', 'tiff'), 9 => array('jpg', 'jpeg'), 10 => array('jpg', 'jpeg'), 11 => array('jpg', 'jpeg'), 12 => array('jpg', 'jpeg'), 13 => array('swc'), 14 => array('iff'), 15 => array('wbmp'), 16 => array('xbm'), ); } } ?>