From: Stefan Metzmacher <metze@samba.org>
Date: Thu, 8 Nov 2018 08:45:15 +0000 (+0100)
Subject: s4:rpc_server: allow a NULL function pointer in dcesrv_fetch_session_key()
X-Git-Tag: talloc-2.1.15~116
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=851c06f40b1494440d8b404f5af38f9e080fead1;p=thirdparty%2Fsamba.git

s4:rpc_server: allow a NULL function pointer in dcesrv_fetch_session_key()

BUG: https://bugzilla.samba.org/show_bug.cgi?id=7113
BUG: https://bugzilla.samba.org/show_bug.cgi?id=11892

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
---

diff --git a/source4/rpc_server/dcerpc_server.c b/source4/rpc_server/dcerpc_server.c
index fca62290a70..b8255ba4dd8 100644
--- a/source4/rpc_server/dcerpc_server.c
+++ b/source4/rpc_server/dcerpc_server.c
@@ -489,7 +489,14 @@ _PUBLIC_ NTSTATUS dcesrv_auth_session_key(struct dcesrv_call_state *call,
 _PUBLIC_ NTSTATUS dcesrv_fetch_session_key(struct dcesrv_connection *p,
 				  DATA_BLOB *session_key)
 {
-	NTSTATUS status = p->auth_state.session_key(p, session_key);
+	struct dcesrv_auth *auth = &p->auth_state;
+	NTSTATUS status;
+
+	if (auth->session_key == NULL) {
+		return NT_STATUS_NO_USER_SESSION_KEY;
+	}
+
+	status = auth->session_key(p, session_key);
 	if (!NT_STATUS_IS_OK(status)) {
 		return status;
 	}