1 files changed, 88 insertions, 0 deletions
diff --git a/librpc/ndr/ndr_sec_helper.c b/librpc/ndr/ndr_sec_helper.c
new file mode 100644
index 0000000000..009e3524a7
--- /dev/null
+++ b/librpc/ndr/ndr_sec_helper.c
@@ -0,0 +1,88 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   fast routines for getting the wire size of security objects
+
+   Copyright (C) Andrew Tridgell 2003
+   Copyright (C) Stefan Metzmacher 2006-2008
+   
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+
+#include "includes.h"
+#include "librpc/gen_ndr/ndr_security.h"
+
+/*
+  return the wire size of a security_ace
+*/
+size_t ndr_size_security_ace(const struct security_ace *ace, int flags)
+{
+	size_t ret;
+
+	if (!ace) return 0;
+
+	ret = 8 + ndr_size_dom_sid(&ace->trustee, flags);
+
+	switch (ace->type) {
+	case SEC_ACE_TYPE_ACCESS_ALLOWED_OBJECT:
+	case SEC_ACE_TYPE_ACCESS_DENIED_OBJECT:
+	case SEC_ACE_TYPE_SYSTEM_AUDIT_OBJECT:
+	case SEC_ACE_TYPE_SYSTEM_ALARM_OBJECT:
+		ret += 4; /* uint32 bitmap ace->object.object.flags */
+		if (ace->object.object.flags & SEC_ACE_OBJECT_TYPE_PRESENT) {
+			ret += 16; /* GUID ace->object.object.type.type */
+		}
+		if (ace->object.object.flags & SEC_ACE_INHERITED_OBJECT_TYPE_PRESENT) {
+			ret += 16; /* GUID ace->object.object.inherited_typeinherited_type */
+		}
+		break;
+	default:
+		break;
+	}
+
+	return ret;
+}
+
+/*
+  return the wire size of a security_acl
+*/
+size_t ndr_size_security_acl(const struct security_acl *acl, int flags)
+{
+	size_t ret;
+	int i;
+	if (!acl) return 0;
+	ret = 8;
+	for (i=0;i<acl->num_aces;i++) {
+		ret += ndr_size_security_ace(&acl->aces[i], flags);
+	}
+	return ret;
+}
+
+/*
+  return the wire size of a security descriptor
+*/
+size_t ndr_size_security_descriptor(const struct security_descriptor *sd, int flags)
+{
+	size_t ret;
+	if (!sd) return 0;
+	
+	ret = 20;
+	ret += ndr_size_dom_sid(sd->owner_sid, flags);
+	ret += ndr_size_dom_sid(sd->group_sid, flags);
+	ret += ndr_size_security_acl(sd->dacl, flags);
+	ret += ndr_size_security_acl(sd->sacl, flags);
+	return ret;
+}
+