2 * Unix SMB/CIFS implementation.
3 * RPC client transport over named pipes
4 * Copyright (C) Volker Lendecke 2009
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 3 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, see <http://www.gnu.org/licenses/>.
21 #include "../lib/util/tevent_ntstatus.h"
22 #include "librpc/rpc/dcerpc_util.h"
23 #include "rpc_client/rpc_transport.h"
24 #include "librpc/ndr/ndr_table.h"
25 #include "libcli/smb/smbXcli_base.h"
26 #include "libcli/smb/tstream_smbXcli_np.h"
30 #define DBGC_CLASS DBGC_RPC_CLI
32 struct rpc_transport_np_init_state
{
33 struct rpc_cli_transport
*transport
;
35 struct tevent_context
*ev
;
36 struct smbXcli_conn
*conn
;
38 struct timeval abs_timeout
;
39 const char *pipe_name
;
40 struct smbXcli_session
*session
;
41 struct smbXcli_tcon
*tcon
;
45 static void rpc_transport_np_init_pipe_open(struct tevent_req
*subreq
);
47 struct tevent_req
*rpc_transport_np_init_send(TALLOC_CTX
*mem_ctx
,
48 struct tevent_context
*ev
,
49 struct cli_state
*cli
,
50 const struct ndr_interface_table
*table
)
52 struct tevent_req
*req
;
53 struct rpc_transport_np_init_state
*state
;
54 struct tevent_req
*subreq
;
56 req
= tevent_req_create(mem_ctx
, &state
,
57 struct rpc_transport_np_init_state
);
62 if (smbXcli_conn_protocol(cli
->conn
) >= PROTOCOL_SMB2_02
) {
63 state
->tcon
= cli
->smb2
.tcon
;
64 state
->session
= cli
->smb2
.session
;
66 state
->tcon
= cli
->smb1
.tcon
;
67 state
->session
= cli
->smb1
.session
;
68 state
->pid
= cli
->smb1
.pid
;
72 state
->conn
= cli
->conn
;
73 state
->timeout
= cli
->timeout
;
74 state
->abs_timeout
= timeval_current_ofs_msec(cli
->timeout
);
75 state
->pipe_name
= dcerpc_default_transport_endpoint(state
, NCACN_NP
,
77 if (tevent_req_nomem(state
->pipe_name
, req
)) {
78 return tevent_req_post(req
, ev
);
81 while (state
->pipe_name
[0] == '\\') {
85 subreq
= tstream_smbXcli_np_open_send(state
, ev
, state
->conn
,
86 state
->session
, state
->tcon
,
87 state
->pid
, state
->timeout
,
89 if (tevent_req_nomem(subreq
, req
)) {
90 return tevent_req_post(req
, ev
);
92 tevent_req_set_callback(subreq
, rpc_transport_np_init_pipe_open
, req
);
97 static void rpc_transport_np_init_pipe_open_retry(struct tevent_context
*ev
,
98 struct tevent_timer
*te
,
102 struct tevent_req
*subreq
;
103 struct tevent_req
*req
= talloc_get_type(priv_data
, struct tevent_req
);
104 struct rpc_transport_np_init_state
*state
= tevent_req_data(
105 req
, struct rpc_transport_np_init_state
);
107 subreq
= tstream_smbXcli_np_open_send(state
, ev
,
114 if (tevent_req_nomem(subreq
, req
)) {
117 tevent_req_set_callback(subreq
, rpc_transport_np_init_pipe_open
, req
);
121 static void rpc_transport_np_init_pipe_open(struct tevent_req
*subreq
)
123 struct tevent_req
*req
= tevent_req_callback_data(
124 subreq
, struct tevent_req
);
125 struct rpc_transport_np_init_state
*state
= tevent_req_data(
126 req
, struct rpc_transport_np_init_state
);
128 struct tstream_context
*stream
;
130 status
= tstream_smbXcli_np_open_recv(subreq
, state
, &stream
);
132 if (NT_STATUS_EQUAL(status
, NT_STATUS_PIPE_NOT_AVAILABLE
)
133 && (!timeval_expired(&state
->abs_timeout
))) {
134 struct tevent_timer
*te
;
136 * Retry on STATUS_PIPE_NOT_AVAILABLE, Windows starts some
137 * servers (FssagentRpc) on demand.
139 DEBUG(2, ("RPC pipe %s not available, retry %d\n",
140 state
->pipe_name
, state
->retries
));
141 te
= tevent_add_timer(state
->ev
, state
,
142 timeval_current_ofs_msec(100 * state
->retries
),
143 rpc_transport_np_init_pipe_open_retry
, req
);
144 if (tevent_req_nomem(te
, req
)) {
145 DEBUG(2, ("Failed to create asynchronous "
151 if (tevent_req_nterror(req
, status
)) {
155 status
= rpc_transport_tstream_init(state
,
158 if (tevent_req_nterror(req
, status
)) {
162 tevent_req_done(req
);
165 NTSTATUS
rpc_transport_np_init_recv(struct tevent_req
*req
,
167 struct rpc_cli_transport
**presult
)
169 struct rpc_transport_np_init_state
*state
= tevent_req_data(
170 req
, struct rpc_transport_np_init_state
);
173 if (tevent_req_is_nterror(req
, &status
)) {
177 *presult
= talloc_move(mem_ctx
, &state
->transport
);