File extension check is now case-insensitive

Fixes #527

diff --git a/wcfsetup/install/files/lib/system/upload/UploadFile.class.php b/wcfsetup/install/files/lib/system/upload/UploadFile.class.php
index 7a0158818dadd027e27d6c9fce4dadbe03cbd75b..d3e05352d83b0e9dd02dba97b1058cfd5871abf7 100644 (file)
--- a/wcfsetup/install/files/lib/system/upload/UploadFile.class.php
+++ b/wcfsetup/install/files/lib/system/upload/UploadFile.class.php
@@ -82,7 +82,7 @@ class UploadFile {
         */
        public function getFileExtension() {
                if (($position = StringUtil::lastIndexOf($this->getFilename(), '.')) !== false) {
-                       return StringUtil::substring($this->getFilename(), $position + 1);
+                       return StringUtil::toLowerCase(StringUtil::substring($this->getFilename(), $position + 1));
                }
                
                return '';