s3-dcerpc: Fix ability to receive Big Endian PDUs

2 files changed, 16 insertions, 14 deletions

diff --git a/source3/rpc_server/srv_pipe.c b/source3/rpc_server/srv_pipe.c
index 6d37ec2bc2..968553a28d 100644
--- a/source3/rpc_server/srv_pipe.c
+++ b/source3/rpc_server/srv_pipe.c
@@ -568,7 +568,7 @@ bool api_pipe_bind_auth3(pipes_struct *p, struct ncacn_packet *pkt)
 
 	status = dcerpc_pull_dcerpc_auth(pkt,
 					 &pkt->u.auth3.auth_info,
-					 &auth_info);
+					 &auth_info, p->endian);
 	if (!NT_STATUS_IS_OK(status)) {
 		DEBUG(0, ("Failed to unmarshall dcerpc_auth.\n"));
 		goto err;
@@ -1303,7 +1303,7 @@ bool api_pipe_bind_req(pipes_struct *p, struct ncacn_packet *pkt)
 		 */
 		status = dcerpc_pull_dcerpc_auth(pkt,
 						 &pkt->u.bind.auth_info,
-						 &auth_info);
+						 &auth_info, p->endian);
 		if (!NT_STATUS_IS_OK(status)) {
 			DEBUG(0, ("Unable to unmarshall dcerpc_auth.\n"));
 			goto err_exit;
@@ -1524,7 +1524,7 @@ bool api_pipe_alter_context(pipes_struct *p, struct ncacn_packet *pkt)
 
 		status = dcerpc_pull_dcerpc_auth(pkt,
 						 &pkt->u.bind.auth_info,
-						 &auth_info);
+						 &auth_info, p->endian);
 		if (!NT_STATUS_IS_OK(status)) {
 			DEBUG(0, ("Unable to unmarshall dcerpc_auth.\n"));
 			goto err_exit;
diff --git a/source3/rpc_server/srv_pipe_hnd.c b/source3/rpc_server/srv_pipe_hnd.c
index 3055e1a29c..51f30cea25 100644
--- a/source3/rpc_server/srv_pipe_hnd.c
+++ b/source3/rpc_server/srv_pipe_hnd.c
@@ -406,25 +406,27 @@ static void process_complete_pdu(pipes_struct *p)
 		goto done;
 	}
 
-	status = dcerpc_pull_ncacn_packet(pkt, &p->in_data.pdu, pkt);
-	if (!NT_STATUS_IS_OK(status)) {
-		DEBUG(0, ("Failed to unmarshal rpc packet: %s!\n",
-			  nt_errstr(status)));
-		goto done;
-	}
-
-	/* Store the call_id */
-	p->call_id = pkt->call_id;
-
 	/*
 	 * Ensure we're using the corrent endianness for both the
 	 * RPC header flags and the raw data we will be reading from.
 	 */
-	if (pkt->drep[0] == DCERPC_DREP_LE) {
+	if (dcerpc_get_endian_flag(&p->in_data.pdu) & DCERPC_DREP_LE) {
 		p->endian = RPC_LITTLE_ENDIAN;
 	} else {
 		p->endian = RPC_BIG_ENDIAN;
 	}
+	DEBUG(10, ("PDU is in %s Endian format!\n", p->endian?"Big":"Little"));
+
+	status = dcerpc_pull_ncacn_packet(pkt, &p->in_data.pdu,
+					  pkt, p->endian);
+	if (!NT_STATUS_IS_OK(status)) {
+		DEBUG(0, ("Failed to unmarshal rpc packet: %s!\n",
+			  nt_errstr(status)));
+		goto done;
+	}
+
+	/* Store the call_id */
+	p->call_id = pkt->call_id;
 
 	DEBUG(10, ("Processing packet type %d\n", (int)pkt->ptype));