From b682512d511157efcb5f36349d5c7d8271cbb5e4 Mon Sep 17 00:00:00 2001
From: Charles Severance <csev@umich.edu>
Date: Tue, 24 Sep 2024 12:23:57 -0400
Subject: [PATCH] Make FileRouter work better when mod_rewrite is not installed

---
 src/Core/LTIX.php       | 2 +-
 src/Util/FileRouter.php | 8 ++++++--
 2 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/src/Core/LTIX.php b/src/Core/LTIX.php
index 38fae24f..93d87001 100644
--- a/src/Core/LTIX.php
+++ b/src/Core/LTIX.php
@@ -446,7 +446,7 @@ public static function setupSession($needed=self::ALL, $session_object=null, $re
                 session_start();
             // if we're using a cookie session, the session may already have been started; if not, start it now
             // (if we call session_start() and the session has already been started, php will generate a notice, which we don't want)
-            } else if (U::isEmpty($_SESSION)) {
+            } else if (U::isEmpty($_SESSION ?? null)) {
                 session_start();
             }
             $session_id = session_id();
diff --git a/src/Util/FileRouter.php b/src/Util/FileRouter.php
index c307ccd4..71d4d4d9 100644
--- a/src/Util/FileRouter.php
+++ b/src/Util/FileRouter.php
@@ -39,7 +39,7 @@ public function trimQuery($uri) {
     }
 
     // /wa4e/install returns install.php if the file exists
-    public function fileCheck($uri=null) {
+    public function fileCheck($uri=null, $defaultFile='index.php') {
         global $TSUGI_REST_PATH_VALUES;
         global $TSUGI_REST_PATH;
         $TSUGI_REST_PATH = false;
@@ -48,9 +48,13 @@ public function fileCheck($uri=null) {
         $uri = self::trimQuery($uri);
         // /wa4e/tsugi
         $cwd = self::cwd();
-	if ( ! endsWith($cwd, '/') ) $cwd = $cwd .'/';
+	    if ( ! endsWith($cwd, '/') ) $cwd = $cwd .'/';
         if ( strpos($uri,$cwd) === 0 ) {
             $remainder = substr($uri, strlen($cwd));
+            if ( empty($remainder) && $defaultFile && file_exists($defaultFile ) ) {
+                $TSUGI_REST_PATH = $cwd . $defaultFile;
+                return $defaultFile;
+            }
             if ( empty($remainder) ) return false;
             $pieces = explode('/',$remainder,2);
             $file = $pieces[0] . '.php';