idl: add to_null attribute to the spoolss devicename array

OpenPrinterEx requests have also been observed in the wild carrying
non-utf16 garbage after the device mode devicename field null
terminator.

Signed-off-by: Jeremy Allison <jra@samba.org>
(cherry picked from commit 90f3708135ef6573997417bd8e53191df78519c2)

diff --git a/librpc/idl/spoolss.idl b/librpc/idl/spoolss.idl
index 4b1f94f4a353b6dfd894ecec210b7975070c4c0b..d888a79ecba9c1ff90db59b1b0519dda8156584f 100644 (file)
--- a/librpc/idl/spoolss.idl
+++ b/librpc/idl/spoolss.idl
@@ -678,7 +678,7 @@ cpp_quote("#define spoolss_security_descriptor security_descriptor")
        const int MAXDEVICENAME = 32;
 
        typedef [public,gensize] struct {
-               [charset(UTF16)] uint16 devicename[MAXDEVICENAME];
+               [charset(UTF16),to_null] uint16 devicename[MAXDEVICENAME];
                spoolss_DeviceModeSpecVersion specversion;
                uint16 driverversion;
                uint16 size;