diff options
Diffstat (limited to 'core/controllers/file_proxy.php')
-rw-r--r-- | core/controllers/file_proxy.php | 120 |
1 files changed, 0 insertions, 120 deletions
diff --git a/core/controllers/file_proxy.php b/core/controllers/file_proxy.php deleted file mode 100644 index f3c5f109..00000000 --- a/core/controllers/file_proxy.php +++ /dev/null @@ -1,120 +0,0 @@ -<?php defined("SYSPATH") or die("No direct script access."); -/** - * Gallery - a web based photo album viewer and editor - * Copyright (C) 2000-2009 Bharat Mediratta - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or (at - * your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. - */ -/** - * Proxy access to files in var/albums and var/resizes, making sure that the session user has - * access to view these files. - * - * Security Philosophy: we do not use the information provided to find if the file exists on - * disk. We use this information only to locate the correct item in the database and then we - * *only* use information from the database to find and proxy the correct file. This way all user - * input is sanitized against the database before we perform any file I/O. - */ -class File_Proxy_Controller extends Controller { - public function __call($function, $args) { - // request_uri: http://example.com/gallery3/var/trunk/albums/foo/bar.jpg - $request_uri = $this->input->server("REQUEST_URI"); - $request_uri = preg_replace("/\?.*/", "", $request_uri); - - // var_uri: http://example.com/gallery3/var/ - $var_uri = url::file("var/"); - - // Make sure that the request is for a file inside var - $offset = strpos($request_uri, $var_uri); - if ($offset === false) { - kohana::show_404(); - } - - $file = substr($request_uri, strlen($var_uri)); - - // Make sure that we don't leave the var dir - if (strpos($file, "..") !== false) { - kohana::show_404(); - } - - // We only handle var/resizes and var/albums - $paths = explode("/", $file); - $type = $paths[0]; - if ($type != "resizes" && $type != "albums" && $type != "thumbs") { - kohana::show_404(); - } - - // If the last element is .album.jpg, pop that off since it's not a real item - if ($paths[count($paths)-1] == ".album.jpg") { - array_pop($paths); - } - if ($paths[count($paths)-1] == "") { - array_pop($paths); - } - - // Find all items that match the level and name, then iterate over those to find a match. - // In most cases we'll get it in one. Note that for the level calculation, we just count the - // size of $paths. $paths includes the type ("thumbs", etc) but it doesn't include the root, - // so it's a wash. - $count = count($paths); - $compare_file = VARPATH . $file; - $item = null; - foreach (ORM::factory("item") - ->where("name", $paths[$count - 1]) - ->where("level", $count) - ->find_all() as $match) { - if ($type == "albums") { - $match_file = $match->file_path(); - } else if ($type == "resizes") { - $match_file = $match->resize_path(); - } else { - $match_file = $match->thumb_path(); - } - if ($match_file == $compare_file) { - $item = $match; - break; - } - } - - if (!$item) { - kohana::show_404(); - } - - // Make sure we have access to the item - if (!access::can("view", $item)) { - kohana::show_404(); - } - - // Make sure we have view_full access to the original - if ($type == "albums" && !access::can("view_full", $item)) { - kohana::show_404(); - } - - // Don't try to load a directory - if ($type == "albums" && $item->is_album()) { - kohana::show_404(); - } - - if (!file_exists($match_file)) { - kohana::show_404(); - } - - // Dump out the image - header("Content-Type: $item->mime_type"); - Kohana::close_buffers(false); - $fd = fopen($match_file, "rb"); - fpassthru($fd); - fclose($fd); - } -} |