145 lines
5.3 KiB
PHP
145 lines
5.3 KiB
PHP
<?php defined("SYSPATH") or die("No direct script access.");
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/**
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* Gallery - a web based photo album viewer and editor
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* Copyright (C) 2000-2013 Bharat Mediratta
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or (at
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* your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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/**
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* Proxy access to files in var/albums and var/resizes, making sure that the session user has
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* access to view these files.
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*
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* Security Philosophy: we do not use the information provided to find if the file exists on
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* disk. We use this information only to locate the correct item in the database and then we
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* *only* use information from the database to find and proxy the correct file. This way all user
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* input is sanitized against the database before we perform any file I/O.
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*/
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class File_Proxy_Controller extends Controller {
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const ALLOW_PRIVATE_GALLERY = true;
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public function __call($function, $args) {
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// request_uri: gallery3/var/albums/foo/bar.jpg?m=1234
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$request_uri = rawurldecode(Input::instance()->server("REQUEST_URI"));
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// get rid of query parameters
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// request_uri: gallery3/var/albums/foo/bar.jpg
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$request_uri = preg_replace("/\?.*/", "", $request_uri);
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// var_uri: gallery3/var/
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$var_uri = url::file("var/");
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// Make sure that the request is for a file inside var
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$offset = strpos(rawurldecode($request_uri), $var_uri);
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if ($offset !== 0) {
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throw new Kohana_404_Exception();
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}
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// file_uri: albums/foo/bar.jpg
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$file_uri = substr($request_uri, strlen($var_uri));
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// type: albums
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// path: foo/bar.jpg
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list ($type, $path) = explode("/", $file_uri, 2);
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if ($type != "resizes" && $type != "albums" && $type != "thumbs") {
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throw new Kohana_404_Exception();
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}
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// If the last element is .album.jpg, pop that off since it's not a real item
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$path = preg_replace("|/.album.jpg$|", "", $path);
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$item = item::find_by_path($path);
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if (!$item->loaded()) {
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// We didn't turn it up. If we're looking for a .jpg then it's it's possible that we're
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// requesting the thumbnail for a movie. In that case, the .flv, .mp4 or .m4v file would
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// have been converted to a .jpg. So try some alternate types:
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if (preg_match('/.jpg$/', $path)) {
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// rWatcher Mod: look for videos with file extensions supported by the videos module in addition to flv mp4 and m4v
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// Original Line: foreach (array("flv", "mp4", "m4v") as $ext) {
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foreach (array_merge(array("flv", "mp4", "m4v"), unserialize(module::get_var("videos", "allowed_extensions"))) as $ext) {
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$movie_path = preg_replace('/.jpg$/', ".$ext", $path);
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$item = item::find_by_path($movie_path);
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if ($item->loaded()) {
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break;
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}
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}
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}
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// rWatcher Mod:
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// If we're looking for a .flv then it's it's possible that we're requesting a flash resize
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// for a movie.
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if (strtolower(substr($path, strlen($path)-4)) == ".flv") {
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$movie_path = str_ireplace(".flv", "", $path);
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$item = ORM::factory("item")->where("relative_path_cache", "=", $movie_path)->find();
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}
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// END rWatcher Mod
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}
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if (!$item->loaded()) {
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throw new Kohana_404_Exception();
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}
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// Make sure we have access to the item
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if (!access::can("view", $item)) {
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throw new Kohana_404_Exception();
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}
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// Make sure we have view_full access to the original
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if ($type == "albums" && !access::can("view_full", $item)) {
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throw new Kohana_404_Exception();
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}
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// Don't try to load a directory
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if ($type == "albums" && $item->is_album()) {
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throw new Kohana_404_Exception();
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}
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if ($type == "albums") {
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$file = $item->file_path();
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} else if ($type == "resizes") {
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$file = $item->resize_path();
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// rWatcher MOD
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// If the resize is for a movie, assume it needs a .flv extension.
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if ($item->is_movie()) {
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$file = $file . ".flv";
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}
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// End rWatcher MOD
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} else {
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$file = $item->thumb_path();
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}
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if (!file_exists($file)) {
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throw new Kohana_404_Exception();
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}
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header("Content-Length: " . filesize($file));
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header("Pragma:");
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// Check that the content hasn't expired or it wasn't changed since cached
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expires::check(2592000, $item->updated);
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// We don't need to save the session for this request
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Session::instance()->abort_save();
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expires::set(2592000, $item->updated); // 30 days
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// Dump out the image. If the item is a movie, then its thumbnail will be a JPG.
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if ($item->is_movie() && $type != "albums") {
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header("Content-Type: image/jpeg");
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} else {
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header("Content-Type: $item->mime_type");
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}
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Kohana::close_buffers(false);
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readfile($file);
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}
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}
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