From 9947f2b706da4adf8680e81a178b0aa971882c2d Mon Sep 17 00:00:00 2001
From: Stefan Brand <seiichiro@seiichiro0185.org>
Date: Tue, 11 Jan 2022 17:19:02 +0100
Subject: [PATCH] Also Cache Dir List

---
 conf/config.php |  2 +-
 index.php       | 18 +++++++++++-------
 2 files changed, 12 insertions(+), 8 deletions(-)

diff --git a/conf/config.php b/conf/config.php
index bdf514c..2d56c2d 100644
--- a/conf/config.php
+++ b/conf/config.php
@@ -22,6 +22,6 @@ $conf['defpage']  = 1;
 // Images per Page if not specified
 $conf['defslice'] = 34;
 // Default Subdirectory if none given
-$conf['defdir']   = '/';
+$conf['defdir']   = '';
 
 ?>
\ No newline at end of file
diff --git a/index.php b/index.php
index 35c293f..83a0926 100644
--- a/index.php
+++ b/index.php
@@ -32,12 +32,16 @@ session_start();
 $t = new Thumb(Helpers::end_dir($imagedir.$dir), $thumbdir, 200, 200);
 
 // Filelist Cache Handling
-if (isset($_SESSION[$dir])
-    && (time() - $_SESSION[$dir]['t']) < $conf['flcache'] 
+$cdir = $dir;
+if (empty($cdir))
+  $cdir = '/';
+
+if (isset($_SESSION[$cdir])
+    && (time() - $_SESSION[$cdir]['t']) < $conf['flcache'] 
     && !isset($_GET['refcache'])) 
 {
-  $files = $_SESSION[$dir]['f'];
-  $dirs  = $_SESSION[$dir]['d'];
+  $files = $_SESSION[$cdir]['f'];
+  $dirs  = $_SESSION[$cdir]['d'];
 } else {
   $r_imagedir = realpath($imagedir.$dir);
   if ($r_imagedir === false || strpos(Helpers::end_dir($r_imagedir), $r_basedir.DIRECTORY_SEPARATOR) !== 0) {
@@ -53,9 +57,9 @@ if (isset($_SESSION[$dir])
   $rmdirs[] = '.';
   $rmdirs[] = '..';
   $files = array_diff(scandir($imagedir.$dir, SCANDIR_SORT_DESCENDING), $rmdirs);
-  $_SESSION[$dir]['f'] = $files;
-  $_SESSION[$dir]['d'] = $dirs;
-  $_SESSION[$dir]['t'] = time();
+  $_SESSION[$cdir]['f'] = $files;
+  $_SESSION[$cdir]['d'] = $dirs;
+  $_SESSION[$cdir]['t'] = time();
 }
 
 // Apply Filters to Filelist