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/>.
23 #define DBGC_CLASS DBGC_RPC_CLI
25 struct rpc_transport_np_state
{
26 struct cli_state
*cli
;
27 const char *pipe_name
;
31 static bool rpc_np_is_connected(void *priv
)
33 struct rpc_transport_np_state
*np_transport
= talloc_get_type_abort(
34 priv
, struct rpc_transport_np_state
);
37 if (np_transport
->cli
== NULL
) {
41 ok
= cli_state_is_connected(np_transport
->cli
);
43 np_transport
->cli
= NULL
;
50 static int rpc_transport_np_state_destructor(struct rpc_transport_np_state
*s
)
52 if (!rpc_np_is_connected(s
)) {
53 DEBUG(10, ("socket was closed, no need to send close request.\n"));
57 /* TODO: do not use a sync call with a destructor!!! */
58 if (!NT_STATUS_IS_OK(cli_close(s
->cli
, s
->fnum
))) {
59 DEBUG(1, ("rpc_transport_np_state_destructor: cli_close "
60 "failed on pipe %s. Error was %s\n", s
->pipe_name
,
63 DEBUG(10, ("rpc_pipe_destructor: closed %s\n", s
->pipe_name
));
65 * We can't do much on failure
70 struct rpc_np_write_state
{
71 struct rpc_transport_np_state
*np_transport
;
76 static void rpc_np_write_done(struct tevent_req
*subreq
);
78 static struct tevent_req
*rpc_np_write_send(TALLOC_CTX
*mem_ctx
,
79 struct event_context
*ev
,
80 const uint8_t *data
, size_t size
,
83 struct rpc_transport_np_state
*np_transport
= talloc_get_type_abort(
84 priv
, struct rpc_transport_np_state
);
85 struct tevent_req
*req
, *subreq
;
86 struct rpc_np_write_state
*state
;
89 req
= tevent_req_create(mem_ctx
, &state
, struct rpc_np_write_state
);
94 ok
= rpc_np_is_connected(np_transport
);
96 tevent_req_nterror(req
, NT_STATUS_CONNECTION_INVALID
);
97 return tevent_req_post(req
, ev
);
100 state
->np_transport
= np_transport
;
104 subreq
= cli_write_andx_send(mem_ctx
, ev
, np_transport
->cli
,
106 8, /* 8 means message mode. */
108 if (tevent_req_nomem(subreq
, req
)) {
109 return tevent_req_post(req
, ev
);
111 tevent_req_set_callback(subreq
, rpc_np_write_done
, req
);
115 static void rpc_np_write_done(struct tevent_req
*subreq
)
117 struct tevent_req
*req
= tevent_req_callback_data(
118 subreq
, struct tevent_req
);
119 struct rpc_np_write_state
*state
= tevent_req_data(
120 req
, struct rpc_np_write_state
);
123 status
= cli_write_andx_recv(subreq
, &state
->written
);
125 if (!NT_STATUS_IS_OK(status
)) {
126 state
->np_transport
->cli
= NULL
;
127 tevent_req_nterror(req
, status
);
130 tevent_req_done(req
);
133 static NTSTATUS
rpc_np_write_recv(struct tevent_req
*req
, ssize_t
*pwritten
)
135 struct rpc_np_write_state
*state
= tevent_req_data(
136 req
, struct rpc_np_write_state
);
139 if (tevent_req_is_nterror(req
, &status
)) {
142 *pwritten
= state
->written
;
146 struct rpc_np_read_state
{
147 struct rpc_transport_np_state
*np_transport
;
153 static void rpc_np_read_done(struct tevent_req
*subreq
);
155 static struct tevent_req
*rpc_np_read_send(TALLOC_CTX
*mem_ctx
,
156 struct event_context
*ev
,
157 uint8_t *data
, size_t size
,
160 struct rpc_transport_np_state
*np_transport
= talloc_get_type_abort(
161 priv
, struct rpc_transport_np_state
);
162 struct tevent_req
*req
, *subreq
;
163 struct rpc_np_read_state
*state
;
166 req
= tevent_req_create(mem_ctx
, &state
, struct rpc_np_read_state
);
171 ok
= rpc_np_is_connected(np_transport
);
173 tevent_req_nterror(req
, NT_STATUS_CONNECTION_INVALID
);
174 return tevent_req_post(req
, ev
);
177 state
->np_transport
= np_transport
;
181 subreq
= cli_read_andx_send(mem_ctx
, ev
, np_transport
->cli
,
182 np_transport
->fnum
, 0, size
);
183 if (subreq
== NULL
) {
186 tevent_req_set_callback(subreq
, rpc_np_read_done
, req
);
193 static void rpc_np_read_done(struct tevent_req
*subreq
)
195 struct tevent_req
*req
= tevent_req_callback_data(
196 subreq
, struct tevent_req
);
197 struct rpc_np_read_state
*state
= tevent_req_data(
198 req
, struct rpc_np_read_state
);
202 /* We must free subreq in this function as there is
203 a timer event attached to it. */
205 status
= cli_read_andx_recv(subreq
, &state
->received
, &rcvbuf
);
207 * We can't TALLOC_FREE(subreq) as usual here, as rcvbuf still is a
210 if (NT_STATUS_EQUAL(status
, NT_STATUS_BUFFER_TOO_SMALL
)) {
211 status
= NT_STATUS_OK
;
213 if (!NT_STATUS_IS_OK(status
)) {
215 state
->np_transport
->cli
= NULL
;
216 tevent_req_nterror(req
, status
);
220 if (state
->received
> state
->size
) {
222 state
->np_transport
->cli
= NULL
;
223 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
227 if (state
->received
== 0) {
229 state
->np_transport
->cli
= NULL
;
230 tevent_req_nterror(req
, NT_STATUS_PIPE_BROKEN
);
234 memcpy(state
->data
, rcvbuf
, state
->received
);
236 tevent_req_done(req
);
239 static NTSTATUS
rpc_np_read_recv(struct tevent_req
*req
, ssize_t
*preceived
)
241 struct rpc_np_read_state
*state
= tevent_req_data(
242 req
, struct rpc_np_read_state
);
245 if (tevent_req_is_nterror(req
, &status
)) {
248 *preceived
= state
->received
;
252 struct rpc_np_trans_state
{
253 struct rpc_transport_np_state
*np_transport
;
255 uint32_t max_rdata_len
;
260 static void rpc_np_trans_done(struct tevent_req
*subreq
);
262 static struct tevent_req
*rpc_np_trans_send(TALLOC_CTX
*mem_ctx
,
263 struct event_context
*ev
,
264 uint8_t *data
, size_t data_len
,
265 uint32_t max_rdata_len
,
268 struct rpc_transport_np_state
*np_transport
= talloc_get_type_abort(
269 priv
, struct rpc_transport_np_state
);
270 struct tevent_req
*req
, *subreq
;
271 struct rpc_np_trans_state
*state
;
274 req
= tevent_req_create(mem_ctx
, &state
, struct rpc_np_trans_state
);
279 ok
= rpc_np_is_connected(np_transport
);
281 tevent_req_nterror(req
, NT_STATUS_CONNECTION_INVALID
);
282 return tevent_req_post(req
, ev
);
285 state
->np_transport
= np_transport
;
286 state
->max_rdata_len
= max_rdata_len
;
288 SSVAL(state
->setup
+0, 0, TRANSACT_DCERPCCMD
);
289 SSVAL(state
->setup
+1, 0, np_transport
->fnum
);
291 subreq
= cli_trans_send(
292 state
, ev
, np_transport
->cli
, SMBtrans
,
293 "\\PIPE\\", 0, 0, 0, state
->setup
, 2, 0,
294 NULL
, 0, 0, data
, data_len
, max_rdata_len
);
295 if (subreq
== NULL
) {
298 tevent_req_set_callback(subreq
, rpc_np_trans_done
, req
);
306 static void rpc_np_trans_done(struct tevent_req
*subreq
)
308 struct tevent_req
*req
= tevent_req_callback_data(
309 subreq
, struct tevent_req
);
310 struct rpc_np_trans_state
*state
= tevent_req_data(
311 req
, struct rpc_np_trans_state
);
314 status
= cli_trans_recv(subreq
, state
, NULL
, NULL
, NULL
, NULL
,
315 &state
->rdata
, &state
->rdata_len
);
317 if (NT_STATUS_EQUAL(status
, NT_STATUS_BUFFER_TOO_SMALL
)) {
318 status
= NT_STATUS_OK
;
320 if (!NT_STATUS_IS_OK(status
)) {
321 state
->np_transport
->cli
= NULL
;
322 tevent_req_nterror(req
, status
);
326 if (state
->rdata_len
> state
->max_rdata_len
) {
327 state
->np_transport
->cli
= NULL
;
328 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
332 if (state
->rdata_len
== 0) {
333 state
->np_transport
->cli
= NULL
;
334 tevent_req_nterror(req
, NT_STATUS_PIPE_BROKEN
);
338 tevent_req_done(req
);
341 static NTSTATUS
rpc_np_trans_recv(struct tevent_req
*req
, TALLOC_CTX
*mem_ctx
,
342 uint8_t **prdata
, uint32_t *prdata_len
)
344 struct rpc_np_trans_state
*state
= tevent_req_data(
345 req
, struct rpc_np_trans_state
);
348 if (tevent_req_is_nterror(req
, &status
)) {
351 *prdata
= talloc_move(mem_ctx
, &state
->rdata
);
352 *prdata_len
= state
->rdata_len
;
356 struct rpc_transport_np_init_state
{
357 struct rpc_cli_transport
*transport
;
358 struct rpc_transport_np_state
*transport_np
;
361 static void rpc_transport_np_init_pipe_open(struct tevent_req
*subreq
);
363 struct tevent_req
*rpc_transport_np_init_send(TALLOC_CTX
*mem_ctx
,
364 struct event_context
*ev
,
365 struct cli_state
*cli
,
366 const struct ndr_syntax_id
*abstract_syntax
)
368 struct tevent_req
*req
, *subreq
;
369 struct rpc_transport_np_init_state
*state
;
372 req
= tevent_req_create(mem_ctx
, &state
,
373 struct rpc_transport_np_init_state
);
378 ok
= cli_state_is_connected(cli
);
380 tevent_req_nterror(req
, NT_STATUS_CONNECTION_INVALID
);
381 return tevent_req_post(req
, ev
);
384 state
->transport
= talloc(state
, struct rpc_cli_transport
);
385 if (tevent_req_nomem(state
->transport
, req
)) {
386 return tevent_req_post(req
, ev
);
388 state
->transport_np
= talloc(state
->transport
,
389 struct rpc_transport_np_state
);
390 if (tevent_req_nomem(state
->transport_np
, req
)) {
391 return tevent_req_post(req
, ev
);
393 state
->transport
->priv
= state
->transport_np
;
395 state
->transport_np
->pipe_name
= get_pipe_name_from_syntax(
396 state
->transport_np
, abstract_syntax
);
397 state
->transport_np
->cli
= cli
;
399 subreq
= cli_ntcreate_send(
400 state
, ev
, cli
, state
->transport_np
->pipe_name
, 0,
401 DESIRED_ACCESS_PIPE
, 0, FILE_SHARE_READ
|FILE_SHARE_WRITE
,
403 if (tevent_req_nomem(subreq
, req
)) {
404 return tevent_req_post(req
, ev
);
406 tevent_req_set_callback(subreq
, rpc_transport_np_init_pipe_open
,
411 static void rpc_transport_np_init_pipe_open(struct tevent_req
*subreq
)
413 struct tevent_req
*req
= tevent_req_callback_data(
414 subreq
, struct tevent_req
);
415 struct rpc_transport_np_init_state
*state
= tevent_req_data(
416 req
, struct rpc_transport_np_init_state
);
419 status
= cli_ntcreate_recv(subreq
, &state
->transport_np
->fnum
);
421 if (!NT_STATUS_IS_OK(status
)) {
422 tevent_req_nterror(req
, status
);
426 talloc_set_destructor(state
->transport_np
,
427 rpc_transport_np_state_destructor
);
428 tevent_req_done(req
);
431 NTSTATUS
rpc_transport_np_init_recv(struct tevent_req
*req
,
433 struct rpc_cli_transport
**presult
)
435 struct rpc_transport_np_init_state
*state
= tevent_req_data(
436 req
, struct rpc_transport_np_init_state
);
439 if (tevent_req_is_nterror(req
, &status
)) {
443 state
->transport
->write_send
= rpc_np_write_send
;
444 state
->transport
->write_recv
= rpc_np_write_recv
;
445 state
->transport
->read_send
= rpc_np_read_send
;
446 state
->transport
->read_recv
= rpc_np_read_recv
;
447 state
->transport
->trans_send
= rpc_np_trans_send
;
448 state
->transport
->trans_recv
= rpc_np_trans_recv
;
449 state
->transport
->is_connected
= rpc_np_is_connected
;
451 *presult
= talloc_move(mem_ctx
, &state
->transport
);
455 NTSTATUS
rpc_transport_np_init(TALLOC_CTX
*mem_ctx
, struct cli_state
*cli
,
456 const struct ndr_syntax_id
*abstract_syntax
,
457 struct rpc_cli_transport
**presult
)
459 TALLOC_CTX
*frame
= talloc_stackframe();
460 struct event_context
*ev
;
461 struct tevent_req
*req
;
462 NTSTATUS status
= NT_STATUS_OK
;
464 ev
= event_context_init(frame
);
466 status
= NT_STATUS_NO_MEMORY
;
470 req
= rpc_transport_np_init_send(frame
, ev
, cli
, abstract_syntax
);
472 status
= NT_STATUS_NO_MEMORY
;
476 if (!tevent_req_poll(req
, ev
)) {
477 status
= map_nt_error_from_unix(errno
);
481 status
= rpc_transport_np_init_recv(req
, mem_ctx
, presult
);
487 struct cli_state
*rpc_pipe_np_smb_conn(struct rpc_pipe_client
*p
)
489 struct rpc_transport_np_state
*state
= talloc_get_type(
490 p
->transport
->priv
, struct rpc_transport_np_state
);
498 void rpccli_close_np_fd(struct rpc_pipe_client
*p
)
500 struct cli_state
*cli
= rpc_pipe_np_smb_conn(p
);