From 9a7fbeb028b50e8ebfa932856f47140c57dcf74d Mon Sep 17 00:00:00 2001
From: Nick Booher <njbooher@gmail.com>
Date: Fri, 4 Aug 2017 08:29:43 -0500
Subject: [PATCH] Validate directory path

---
 includes/filesystem.inc | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/includes/filesystem.inc b/includes/filesystem.inc
index abe9b26a28..37428cdb83 100644
--- a/includes/filesystem.inc
+++ b/includes/filesystem.inc
@@ -318,6 +318,12 @@ function drush_move_dir($src, $dest, $overwrite = FALSE) {
  * halted if the required directory cannot be created.
  */
 function drush_mkdir($path, $required = TRUE) {
+  if (!is_string($path) || $path === '') {
+    if (!$required) {
+      return FALSE;
+    }
+    return drush_set_error('DRUSH_INVALID_DIRECTORY_PATH', dt('Unable to create directory. Invalid path provided.'));
+  }
   if (!is_dir($path)) {
     if (drush_mkdir(dirname($path))) {
       if (@mkdir($path)) {