xup: fix for when Xorg/X11rdp to xup message payload is zero

neutrinolabs · Jul 19, 2015 · a330789 · a330789
1 parent d4791b3
commit a330789
Showing 1 changed file with 7 additions and 3 deletions.
diff --git a/xup/xup.c b/xup/xup.c
@@ -110,9 +110,13 @@ lib_data_in(struct trans *trans)
                 g_writeln("lib_data_in: bad size");
                 return 1;
             }
-            trans->header_size = len + 8;
-            trans->extra_flags = 2;
-            break;
+            if (len > 0)
+            {
+                trans->header_size = len + 8;
+                trans->extra_flags = 2;
+                break;
+            }
+            /* fall through */
         case 2:
             s->p = s->data;
             if (lib_mod_process_message(self, s) != 0)