a couple of tidyups

 * don't try to map the epmapper uuid !

 * some preliminary support for alter context pdus
(This used to be commit f9857e56850cabfac06534fb33ff7a7a04346a9b)

4 files changed, 23 insertions, 3 deletions

diff --git a/source4/librpc/rpc/dcerpc.c b/source4/librpc/rpc/dcerpc.c
index 3868bfdf45f..e0b3a550a74 100644
--- a/source4/librpc/rpc/dcerpc.c
+++ b/source4/librpc/rpc/dcerpc.c
@@ -44,6 +44,8 @@ struct dcerpc_pipe *dcerpc_pipe_init(void)
 	p->auth_info = NULL;
 	p->ntlmssp_state = NULL;
 	p->flags = 0;
+	p->srv_max_xmit_frag = 0;
+	p->srv_max_recv_frag = 0;
 
 	return p;
 }
@@ -360,14 +362,16 @@ NTSTATUS dcerpc_bind(struct dcerpc_pipe *p,
 		return status;
 	}
 
-	if (pkt.ptype != DCERPC_PKT_BIND_ACK ||
+	if ((pkt.ptype != DCERPC_PKT_BIND_ACK && pkt.ptype != DCERPC_PKT_ALTER_ACK) ||
 	    pkt.u.bind_ack.num_results == 0 ||
 	    pkt.u.bind_ack.ctx_list[0].result != 0) {
 		status = NT_STATUS_UNSUCCESSFUL;
 	}
 
-	p->srv_max_xmit_frag = pkt.u.bind_ack.max_xmit_frag;
-	p->srv_max_recv_frag = pkt.u.bind_ack.max_recv_frag;
+	if (pkt.ptype != DCERPC_PKT_ALTER_ACK) {
+		p->srv_max_xmit_frag = pkt.u.bind_ack.max_xmit_frag;
+		p->srv_max_recv_frag = pkt.u.bind_ack.max_recv_frag;
+	}
 
 	/* the bind_ack might contain a reply set of credentials */
 	if (p->auth_info && pkt.u.bind_ack.auth_info.length) {
@@ -526,6 +530,7 @@ NTSTATUS dcerpc_request(struct dcerpc_pipe *p,
 	}
 
 	if (pkt.ptype == DCERPC_PKT_FAULT) {
+		p->last_fault_code = pkt.u.fault.status;
 		return NT_STATUS_NET_WRITE_FAULT;
 	}
 
@@ -559,6 +564,11 @@ NTSTATUS dcerpc_request(struct dcerpc_pipe *p,
 			return NT_STATUS_UNSUCCESSFUL;
 		}
 
+		if (pkt.ptype == DCERPC_PKT_FAULT) {
+			p->last_fault_code = pkt.u.fault.status;
+			return NT_STATUS_NET_WRITE_FAULT;
+		}
+
 		if (pkt.ptype != DCERPC_PKT_RESPONSE) {
 			return NT_STATUS_UNSUCCESSFUL;
 		}
diff --git a/source4/librpc/rpc/dcerpc.h b/source4/librpc/rpc/dcerpc.h
index 906f6135937..9a301db66b5 100644
--- a/source4/librpc/rpc/dcerpc.h
+++ b/source4/librpc/rpc/dcerpc.h
@@ -48,6 +48,9 @@ struct dcerpc_pipe {
 		NTSTATUS (*shutdown_pipe)(struct dcerpc_pipe *);
 		const char *(*peer_name)(struct dcerpc_pipe *);
 	} transport;
+
+	/* the last fault code from a DCERPC fault */
+	uint32 last_fault_code;
 };
 
 /* dcerpc pipe flags */
diff --git a/source4/librpc/rpc/dcerpc_auth.c b/source4/librpc/rpc/dcerpc_auth.c
index 5850ec6979a..99ea03c216f 100644
--- a/source4/librpc/rpc/dcerpc_auth.c
+++ b/source4/librpc/rpc/dcerpc_auth.c
@@ -136,6 +136,7 @@ done:
 
 	if (!NT_STATUS_IS_OK(status)) {
 		p->ntlmssp_state = NULL;
+		p->auth_info = NULL;
 	}
 
 	return status;
diff --git a/source4/librpc/rpc/dcerpc_util.c b/source4/librpc/rpc/dcerpc_util.c
index 32d940bc88c..1f349e9a4ba 100644
--- a/source4/librpc/rpc/dcerpc_util.c
+++ b/source4/librpc/rpc/dcerpc_util.c
@@ -62,6 +62,12 @@ NTSTATUS dcerpc_epm_map_tcp_port(const char *server,
 	GUID guid;
 	struct epm_twr_t twr, *twr_r;
 
+	if (strcmp(uuid, DCERPC_EPMAPPER_UUID) == 0) {
+		/* don't lookup epmapper via epmapper! */
+		*port = 135;
+		return NT_STATUS_OK;
+	}
+
 	status = dcerpc_pipe_open_tcp(&p, server, 135);
 	if (!NT_STATUS_IS_OK(status)) {
 		return status;