fix multipart parsing

1 files changed, 10 insertions, 8 deletions

diff --git a/src/main/java/com/juick/http/www/Utils.java b/src/main/java/com/juick/http/www/Utils.java
index e6fcad72..21577a40 100644
--- a/src/main/java/com/juick/http/www/Utils.java
+++ b/src/main/java/com/juick/http/www/Utils.java
@@ -60,15 +60,17 @@ public class Utils {
         Part filePart = request.getPart("attach");
         if (filePart != null) {
             String partname = Utils.getPartFilename(filePart);
-            String attachmentType = partname.substring(partname.length() - 3).toLowerCase();
-            if (attachmentType.equals("jpg") || attachmentType.equals("peg") || attachmentType.equals("png")) {
-                if (attachmentType.equals("peg")) {
-                    attachmentType = "jpg";
+            if (partname != null && partname.length() > 0) {
+                String attachmentType = partname.substring(partname.length() - 3).toLowerCase();
+                if (attachmentType.equals("jpg") || attachmentType.equals("peg") || attachmentType.equals("png")) {
+                    if (attachmentType.equals("peg")) {
+                        attachmentType = "jpg";
+                    }
+                    attachmentFName = UUID.randomUUID().toString() + "." + attachmentType;
+                    filePart.write("/var/www/juick.com/i/tmp/" + attachmentFName);
+                } else {
+                    throw new Exception("Wrong file type");
                 }
-                attachmentFName = UUID.randomUUID().toString() + "." + attachmentType;
-                filePart.write("/var/www/juick.com/i/tmp/" + attachmentFName);
-            } else {
-                throw new Exception("Wrong file type");
             }
         }