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 "rpc_client/rpc_transport.h"
23 #include "libsmb/cli_np_tstream.h"
27 #define DBGC_CLASS DBGC_RPC_CLI
29 struct rpc_transport_np_init_state
{
30 struct rpc_cli_transport
*transport
;
32 struct tevent_context
*ev
;
33 struct cli_state
*cli
;
34 struct timeval abs_timeout
;
35 const char *pipe_name
;
38 static void rpc_transport_np_init_pipe_open(struct tevent_req
*subreq
);
40 struct tevent_req
*rpc_transport_np_init_send(TALLOC_CTX
*mem_ctx
,
41 struct tevent_context
*ev
,
42 struct cli_state
*cli
,
43 const struct ndr_syntax_id
*abstract_syntax
)
45 struct tevent_req
*req
;
46 struct rpc_transport_np_init_state
*state
;
47 struct tevent_req
*subreq
;
49 req
= tevent_req_create(mem_ctx
, &state
,
50 struct rpc_transport_np_init_state
);
57 state
->abs_timeout
= timeval_current_ofs_msec(cli
->timeout
);
58 state
->pipe_name
= get_pipe_name_from_syntax(state
, abstract_syntax
);
59 if (tevent_req_nomem(state
->pipe_name
, req
)) {
60 return tevent_req_post(req
, ev
);
63 while (state
->pipe_name
[0] == '\\') {
67 subreq
= tstream_cli_np_open_send(state
, ev
, cli
, state
->pipe_name
);
68 if (tevent_req_nomem(subreq
, req
)) {
69 return tevent_req_post(req
, ev
);
71 tevent_req_set_callback(subreq
, rpc_transport_np_init_pipe_open
, req
);
76 static void rpc_transport_np_init_pipe_open_retry(struct tevent_context
*ev
,
77 struct tevent_timer
*te
,
81 struct tevent_req
*subreq
;
82 struct tevent_req
*req
= talloc_get_type(priv_data
, struct tevent_req
);
83 struct rpc_transport_np_init_state
*state
= tevent_req_data(
84 req
, struct rpc_transport_np_init_state
);
86 subreq
= tstream_cli_np_open_send(state
, ev
, state
->cli
,
88 if (tevent_req_nomem(subreq
, req
)) {
91 tevent_req_set_callback(subreq
, rpc_transport_np_init_pipe_open
, req
);
95 static void rpc_transport_np_init_pipe_open(struct tevent_req
*subreq
)
97 struct tevent_req
*req
= tevent_req_callback_data(
98 subreq
, struct tevent_req
);
99 struct rpc_transport_np_init_state
*state
= tevent_req_data(
100 req
, struct rpc_transport_np_init_state
);
102 struct tstream_context
*stream
;
104 status
= tstream_cli_np_open_recv(subreq
, state
, &stream
);
106 if (NT_STATUS_EQUAL(status
, NT_STATUS_PIPE_NOT_AVAILABLE
)
107 && (!timeval_expired(&state
->abs_timeout
))) {
108 struct tevent_timer
*te
;
110 * Retry on STATUS_PIPE_NOT_AVAILABLE, Windows starts some
111 * servers (FssagentRpc) on demand.
113 DEBUG(2, ("RPC pipe %s not available, retry %d\n",
114 state
->pipe_name
, state
->retries
));
115 te
= tevent_add_timer(state
->ev
, state
,
116 timeval_current_ofs_msec(100 * state
->retries
),
117 rpc_transport_np_init_pipe_open_retry
, req
);
118 if (tevent_req_nomem(te
, req
)) {
122 } else if (!NT_STATUS_IS_OK(status
)) {
123 tevent_req_nterror(req
, status
);
127 status
= rpc_transport_tstream_init(state
,
130 if (!NT_STATUS_IS_OK(status
)) {
131 tevent_req_nterror(req
, status
);
135 tevent_req_done(req
);
138 NTSTATUS
rpc_transport_np_init_recv(struct tevent_req
*req
,
140 struct rpc_cli_transport
**presult
)
142 struct rpc_transport_np_init_state
*state
= tevent_req_data(
143 req
, struct rpc_transport_np_init_state
);
146 if (tevent_req_is_nterror(req
, &status
)) {
150 *presult
= talloc_move(mem_ctx
, &state
->transport
);
154 NTSTATUS
rpc_transport_np_init(TALLOC_CTX
*mem_ctx
, struct cli_state
*cli
,
155 const struct ndr_syntax_id
*abstract_syntax
,
156 struct rpc_cli_transport
**presult
)
158 TALLOC_CTX
*frame
= talloc_stackframe();
159 struct tevent_context
*ev
;
160 struct tevent_req
*req
;
161 NTSTATUS status
= NT_STATUS_OK
;
163 ev
= samba_tevent_context_init(frame
);
165 status
= NT_STATUS_NO_MEMORY
;
169 req
= rpc_transport_np_init_send(frame
, ev
, cli
, abstract_syntax
);
171 status
= NT_STATUS_NO_MEMORY
;
175 if (!tevent_req_poll(req
, ev
)) {
176 status
= map_nt_error_from_unix(errno
);
180 status
= rpc_transport_np_init_recv(req
, mem_ctx
, presult
);