From: Stefan Metzmacher <metze@samba.org>
Date: Sat, 20 Jun 2015 15:43:47 +0000 (+0200)
Subject: librpc/rpc: add DCERPC_AUTH_PAD_LENGTH(stub_length) helper macro
X-Git-Tag: samba-4.1.20~33
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=213b98ba93501fe85d37ea875d28f6ae9375d47f;p=thirdparty%2Fsamba.git

librpc/rpc: add DCERPC_AUTH_PAD_LENGTH(stub_length) helper macro

This calculates the required padding DCERPC_AUTH_PAD_ALIGNMENT
and the stub_length.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=11061

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
(similar to commit f1e3ad269ca8f76876afd8e3837c9c9b48688941)
---

diff --git a/librpc/rpc/rpc_common.h b/librpc/rpc/rpc_common.h
index e2b37550e1f..acf2ed2fb1f 100644
--- a/librpc/rpc/rpc_common.h
+++ b/librpc/rpc/rpc_common.h
@@ -301,4 +301,10 @@ NTSTATUS dcerpc_binding_handle_call(struct dcerpc_binding_handle *h,
 				    TALLOC_CTX *r_mem,
 				    void *r_ptr);
 
+
+#define DCERPC_AUTH_PAD_LENGTH(stub_length) (\
+	(((stub_length) % DCERPC_AUTH_PAD_ALIGNMENT) > 0)?\
+	(DCERPC_AUTH_PAD_ALIGNMENT - (stub_length) % DCERPC_AUTH_PAD_ALIGNMENT):\
+	0)
+
 #endif /* __DEFAULT_LIBRPC_RPCCOMMON_H__ */