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examples/VFS: fix skel_transparent.c in reference to shadow_copy changes
[Samba/gebeck_regimport.git] / source3 / rpc_server / rpc_ncacn_np.c
blobf14aae540d3118b6f6920182a7fc18c370eb93ba
1 /*
2 * Unix SMB/CIFS implementation.
3 * RPC Pipe client / server routines
4 * Copyright (C) Andrew Tridgell 1992-1998,
5 * Largely re-written : 2005
6 * Copyright (C) Jeremy Allison 1998 - 2005
7 * Copyright (C) Simo Sorce 2010
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 3 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, see <http://www.gnu.org/licenses/>.
21 */
22
23 #include "includes.h"
24 #include "rpc_client/cli_pipe.h"
25 #include "rpc_server/srv_pipe_internal.h"
26 #include "rpc_dce.h"
27 #include "../libcli/named_pipe_auth/npa_tstream.h"
28 #include "rpc_server/rpc_ncacn_np.h"
29 #include "librpc/gen_ndr/netlogon.h"
30 #include "librpc/gen_ndr/auth.h"
31 #include "../auth/auth_sam_reply.h"
32 #include "auth.h"
33 #include "ntdomain.h"
34 #include "../lib/tsocket/tsocket.h"
35 #include "../lib/util/tevent_ntstatus.h"
36 #include "rpc_contexts.h"
37
38 #undef DBGC_CLASS
39 #define DBGC_CLASS DBGC_RPC_SRV
40
41 static struct pipes_struct *InternalPipes;
42
43 /* TODO
44 * the following prototypes are declared here to avoid
45 * code being moved about too much for a patch to be
46 * disrupted / less obvious.
47 *
48 * these functions, and associated functions that they
49 * call, should be moved behind a .so module-loading
50 * system _anyway_. so that's the next step...
51 */
52
53 /****************************************************************************
54 Internal Pipe iterator functions.
55 ****************************************************************************/
56
57 struct pipes_struct *get_first_internal_pipe(void)
58 {
59 return InternalPipes;
60 }
61
62 struct pipes_struct *get_next_internal_pipe(struct pipes_struct *p)
63 {
64 return p->next;
65 }
66
67 static void free_pipe_rpc_context_internal( PIPE_RPC_FNS *list )
68 {
69 PIPE_RPC_FNS *tmp = list;
70 PIPE_RPC_FNS *tmp2;
71
72 while (tmp) {
73 tmp2 = tmp->next;
74 SAFE_FREE(tmp);
75 tmp = tmp2;
76 }
77
78 return;
79 }
80
81 bool check_open_pipes(void)
82 {
83 struct pipes_struct *p;
84
85 for (p = InternalPipes; p != NULL; p = p->next) {
86 if (num_pipe_handles(p) != 0) {
87 return true;
88 }
89 }
90 return false;
91 }
92
93 /****************************************************************************
94 Close an rpc pipe.
95 ****************************************************************************/
96
97 int close_internal_rpc_pipe_hnd(struct pipes_struct *p)
98 {
99 if (!p) {
100 DEBUG(0,("Invalid pipe in close_internal_rpc_pipe_hnd\n"));
101 return False;
102 }
103
104 TALLOC_FREE(p->auth.auth_ctx);
105
106 /* Free the handles database. */
107 close_policy_by_pipe(p);
108
109 free_pipe_rpc_context_internal( p->contexts );
110
111 DLIST_REMOVE(InternalPipes, p);
112
113 ZERO_STRUCTP(p);
114
115 return 0;
116 }
117
118 /****************************************************************************
119 Make an internal namedpipes structure
120 ****************************************************************************/
121
122 struct pipes_struct *make_internal_rpc_pipe_p(TALLOC_CTX *mem_ctx,
123 const struct ndr_syntax_id *syntax,
124 struct client_address *client_id,
125 const struct auth_serversupplied_info *session_info,
126 struct messaging_context *msg_ctx)
127 {
128 struct pipes_struct *p;
129 struct pipe_rpc_fns *context_fns;
130
131 DEBUG(4,("Create pipe requested %s\n",
132 get_pipe_name_from_syntax(talloc_tos(), syntax)));
133
134 p = talloc_zero(mem_ctx, struct pipes_struct);
135
136 if (!p) {
137 DEBUG(0,("ERROR! no memory for pipes_struct!\n"));
138 return NULL;
139 }
140
141 p->mem_ctx = talloc_named(p, 0, "pipe %s %p",
142 get_pipe_name_from_syntax(talloc_tos(),
143 syntax), p);
144 if (p->mem_ctx == NULL) {
145 DEBUG(0,("open_rpc_pipe_p: talloc_init failed.\n"));
146 TALLOC_FREE(p);
147 return NULL;
148 }
149
150 if (!init_pipe_handles(p, syntax)) {
151 DEBUG(0,("open_rpc_pipe_p: init_pipe_handles failed.\n"));
152 TALLOC_FREE(p);
153 return NULL;
154 }
155
156 p->session_info = copy_serverinfo(p, session_info);
157 if (p->session_info == NULL) {
158 DEBUG(0, ("open_rpc_pipe_p: copy_serverinfo failed\n"));
159 close_policy_by_pipe(p);
160 TALLOC_FREE(p);
161 return NULL;
162 }
163
164 p->msg_ctx = msg_ctx;
165
166 DLIST_ADD(InternalPipes, p);
167
168 p->client_id = client_id;
169
170 p->endian = RPC_LITTLE_ENDIAN;
171
172 p->transport = NCALRPC;
173
174 context_fns = SMB_MALLOC_P(struct pipe_rpc_fns);
175 if (context_fns == NULL) {
176 DEBUG(0,("malloc() failed!\n"));
177 return False;
178 }
179
180 context_fns->next = context_fns->prev = NULL;
181 context_fns->n_cmds = rpc_srv_get_pipe_num_cmds(syntax);
182 context_fns->cmds = rpc_srv_get_pipe_cmds(syntax);
183 context_fns->context_id = 0;
184 context_fns->syntax = *syntax;
185
186 /* add to the list of open contexts */
187 DLIST_ADD(p->contexts, context_fns);
188
189 DEBUG(4,("Created internal pipe %s\n",
190 get_pipe_name_from_syntax(talloc_tos(), syntax)));
191
192 talloc_set_destructor(p, close_internal_rpc_pipe_hnd);
193
194 return p;
195 }
196
197 static NTSTATUS rpcint_dispatch(struct pipes_struct *p,
198 TALLOC_CTX *mem_ctx,
199 uint32_t opnum,
200 const DATA_BLOB *in_data,
201 DATA_BLOB *out_data)
202 {
203 struct pipe_rpc_fns *fns = find_pipe_fns_by_context(p->contexts, 0);
204 uint32_t num_cmds = fns->n_cmds;
205 const struct api_struct *cmds = fns->cmds;
206 uint32_t i;
207 bool ok;
208
209 /* set opnum */
210 p->opnum = opnum;
211
212 for (i = 0; i < num_cmds; i++) {
213 if (cmds[i].opnum == opnum && cmds[i].fn != NULL) {
214 break;
215 }
216 }
217
218 if (i == num_cmds) {
219 return NT_STATUS_RPC_PROCNUM_OUT_OF_RANGE;
220 }
221
222 p->in_data.data = *in_data;
223 p->out_data.rdata = data_blob_null;
224
225 ok = cmds[i].fn(p);
226 p->in_data.data = data_blob_null;
227 if (!ok) {
228 data_blob_free(&p->out_data.rdata);
229 talloc_free_children(p->mem_ctx);
230 return NT_STATUS_RPC_CALL_FAILED;
231 }
232
233 if (p->fault_state) {
234 p->fault_state = false;
235 data_blob_free(&p->out_data.rdata);
236 talloc_free_children(p->mem_ctx);
237 return NT_STATUS_RPC_CALL_FAILED;
238 }
239
240 if (p->bad_handle_fault_state) {
241 p->bad_handle_fault_state = false;
242 data_blob_free(&p->out_data.rdata);
243 talloc_free_children(p->mem_ctx);
244 return NT_STATUS_RPC_SS_CONTEXT_MISMATCH;
245 }
246
247 if (p->rng_fault_state) {
248 p->rng_fault_state = false;
249 data_blob_free(&p->out_data.rdata);
250 talloc_free_children(p->mem_ctx);
251 return NT_STATUS_RPC_PROCNUM_OUT_OF_RANGE;
252 }
253
254 *out_data = p->out_data.rdata;
255 talloc_steal(mem_ctx, out_data->data);
256 p->out_data.rdata = data_blob_null;
257
258 talloc_free_children(p->mem_ctx);
259 return NT_STATUS_OK;
260 }
261
262 struct rpcint_bh_state {
263 struct pipes_struct *p;
264 };
265
266 static bool rpcint_bh_is_connected(struct dcerpc_binding_handle *h)
267 {
268 struct rpcint_bh_state *hs = dcerpc_binding_handle_data(h,
269 struct rpcint_bh_state);
270
271 if (!hs->p) {
272 return false;
273 }
274
275 return true;
276 }
277
278 static uint32_t rpcint_bh_set_timeout(struct dcerpc_binding_handle *h,
279 uint32_t timeout)
280 {
281 /* TODO: implement timeouts */
282 return UINT32_MAX;
283 }
284
285 struct rpcint_bh_raw_call_state {
286 DATA_BLOB in_data;
287 DATA_BLOB out_data;
288 uint32_t out_flags;
289 };
290
291 static struct tevent_req *rpcint_bh_raw_call_send(TALLOC_CTX *mem_ctx,
292 struct tevent_context *ev,
293 struct dcerpc_binding_handle *h,
294 const struct GUID *object,
295 uint32_t opnum,
296 uint32_t in_flags,
297 const uint8_t *in_data,
298 size_t in_length)
299 {
300 struct rpcint_bh_state *hs =
301 dcerpc_binding_handle_data(h,
302 struct rpcint_bh_state);
303 struct tevent_req *req;
304 struct rpcint_bh_raw_call_state *state;
305 bool ok;
306 NTSTATUS status;
307
308 req = tevent_req_create(mem_ctx, &state,
309 struct rpcint_bh_raw_call_state);
310 if (req == NULL) {
311 return NULL;
312 }
313 state->in_data.data = discard_const_p(uint8_t, in_data);
314 state->in_data.length = in_length;
315
316 ok = rpcint_bh_is_connected(h);
317 if (!ok) {
318 tevent_req_nterror(req, NT_STATUS_INVALID_CONNECTION);
319 return tevent_req_post(req, ev);
320 }
321
322 /* TODO: allow async */
323 status = rpcint_dispatch(hs->p, state, opnum,
324 &state->in_data,
325 &state->out_data);
326 if (!NT_STATUS_IS_OK(status)) {
327 tevent_req_nterror(req, status);
328 return tevent_req_post(req, ev);
329 }
330
331 tevent_req_done(req);
332 return tevent_req_post(req, ev);
333 }
334
335 static NTSTATUS rpcint_bh_raw_call_recv(struct tevent_req *req,
336 TALLOC_CTX *mem_ctx,
337 uint8_t **out_data,
338 size_t *out_length,
339 uint32_t *out_flags)
340 {
341 struct rpcint_bh_raw_call_state *state =
342 tevent_req_data(req,
343 struct rpcint_bh_raw_call_state);
344 NTSTATUS status;
345
346 if (tevent_req_is_nterror(req, &status)) {
347 tevent_req_received(req);
348 return status;
349 }
350
351 *out_data = talloc_move(mem_ctx, &state->out_data.data);
352 *out_length = state->out_data.length;
353 *out_flags = 0;
354 tevent_req_received(req);
355 return NT_STATUS_OK;
356 }
357
358 struct rpcint_bh_disconnect_state {
359 uint8_t _dummy;
360 };
361
362 static struct tevent_req *rpcint_bh_disconnect_send(TALLOC_CTX *mem_ctx,
363 struct tevent_context *ev,
364 struct dcerpc_binding_handle *h)
365 {
366 struct rpcint_bh_state *hs = dcerpc_binding_handle_data(h,
367 struct rpcint_bh_state);
368 struct tevent_req *req;
369 struct rpcint_bh_disconnect_state *state;
370 bool ok;
371
372 req = tevent_req_create(mem_ctx, &state,
373 struct rpcint_bh_disconnect_state);
374 if (req == NULL) {
375 return NULL;
376 }
377
378 ok = rpcint_bh_is_connected(h);
379 if (!ok) {
380 tevent_req_nterror(req, NT_STATUS_INVALID_CONNECTION);
381 return tevent_req_post(req, ev);
382 }
383
384 /*
385 * TODO: do a real async disconnect ...
386 *
387 * For now the caller needs to free pipes_struct
388 */
389 hs->p = NULL;
390
391 tevent_req_done(req);
392 return tevent_req_post(req, ev);
393 }
394
395 static NTSTATUS rpcint_bh_disconnect_recv(struct tevent_req *req)
396 {
397 NTSTATUS status;
398
399 if (tevent_req_is_nterror(req, &status)) {
400 tevent_req_received(req);
401 return status;
402 }
403
404 tevent_req_received(req);
405 return NT_STATUS_OK;
406 }
407
408 static bool rpcint_bh_ref_alloc(struct dcerpc_binding_handle *h)
409 {
410 return true;
411 }
412
413 static void rpcint_bh_do_ndr_print(struct dcerpc_binding_handle *h,
414 int ndr_flags,
415 const void *_struct_ptr,
416 const struct ndr_interface_call *call)
417 {
418 void *struct_ptr = discard_const(_struct_ptr);
419
420 if (DEBUGLEVEL < 11) {
421 return;
422 }
423
424 if (ndr_flags & NDR_IN) {
425 ndr_print_function_debug(call->ndr_print,
426 call->name,
427 ndr_flags,
428 struct_ptr);
429 }
430 if (ndr_flags & NDR_OUT) {
431 ndr_print_function_debug(call->ndr_print,
432 call->name,
433 ndr_flags,
434 struct_ptr);
435 }
436 }
437
438 static const struct dcerpc_binding_handle_ops rpcint_bh_ops = {
439 .name = "rpcint",
440 .is_connected = rpcint_bh_is_connected,
441 .set_timeout = rpcint_bh_set_timeout,
442 .raw_call_send = rpcint_bh_raw_call_send,
443 .raw_call_recv = rpcint_bh_raw_call_recv,
444 .disconnect_send = rpcint_bh_disconnect_send,
445 .disconnect_recv = rpcint_bh_disconnect_recv,
446
447 .ref_alloc = rpcint_bh_ref_alloc,
448 .do_ndr_print = rpcint_bh_do_ndr_print,
449 };
450
451 static NTSTATUS rpcint_binding_handle_ex(TALLOC_CTX *mem_ctx,
452 const struct ndr_syntax_id *abstract_syntax,
453 const struct ndr_interface_table *ndr_table,
454 struct client_address *client_id,
455 const struct auth_serversupplied_info *session_info,
456 struct messaging_context *msg_ctx,
457 struct dcerpc_binding_handle **binding_handle)
458 {
459 struct dcerpc_binding_handle *h;
460 struct rpcint_bh_state *hs;
461
462 if (ndr_table) {
463 abstract_syntax = &ndr_table->syntax_id;
464 }
465
466 h = dcerpc_binding_handle_create(mem_ctx,
467 &rpcint_bh_ops,
468 NULL,
469 ndr_table,
470 &hs,
471 struct rpcint_bh_state,
472 __location__);
473 if (h == NULL) {
474 return NT_STATUS_NO_MEMORY;
475 }
476 hs->p = make_internal_rpc_pipe_p(hs,
477 abstract_syntax,
478 client_id,
479 session_info,
480 msg_ctx);
481 if (hs->p == NULL) {
482 TALLOC_FREE(h);
483 return NT_STATUS_NO_MEMORY;
484 }
485
486 *binding_handle = h;
487 return NT_STATUS_OK;
488 }
489 /**
490 * @brief Create a new DCERPC Binding Handle which uses a local dispatch function.
491 *
492 * @param[in] mem_ctx The memory context to use.
493 *
494 * @param[in] ndr_table Normally the ndr_table_<name>.
495 *
496 * @param[in] client_id The info about the connected client.
497 *
498 * @param[in] serversupplied_info The server supplied authentication function.
499 *
500 * @param[in] msg_ctx The messaging context that can be used by the server
501 *
502 * @param[out] binding_handle A pointer to store the connected
503 * dcerpc_binding_handle
504 *
505 * @return NT_STATUS_OK on success, a corresponding NT status if an
506 * error occured.
507 *
508 * @code
509 * struct dcerpc_binding_handle *winreg_binding;
510 * NTSTATUS status;
511 *
512 * status = rpcint_binding_handle(tmp_ctx,
513 * &ndr_table_winreg,
514 * p->client_id,
515 * p->session_info,
516 * p->msg_ctx
517 * &winreg_binding);
518 * @endcode
519 */
520 NTSTATUS rpcint_binding_handle(TALLOC_CTX *mem_ctx,
521 const struct ndr_interface_table *ndr_table,
522 struct client_address *client_id,
523 const struct auth_serversupplied_info *session_info,
524 struct messaging_context *msg_ctx,
525 struct dcerpc_binding_handle **binding_handle)
526 {
527 return rpcint_binding_handle_ex(mem_ctx, NULL, ndr_table, client_id,
528 session_info, msg_ctx, binding_handle);
529 }
530
531 /**
532 * @internal
533 *
534 * @brief Create a new RPC client context which uses a local transport.
535 *
536 * This creates a local transport. It is a shortcut to directly call the server
537 * functions and avoid marshalling.
538 * NOTE: this function should be used only by rpc_pipe_open_interface()
539 *
540 * @param[in] mem_ctx The memory context to use.
541 *
542 * @param[in] abstract_syntax Normally the syntax_id of the autogenerated
543 * ndr_table_<name>.
544 *
545 * @param[in] serversupplied_info The server supplied authentication function.
546 *
547 * @param[in] client_id The client address information.
548 *
549 * @param[in] msg_ctx The messaging context to use.
550 *
551 * @param[out] presult A pointer to store the connected rpc client pipe.
552 *
553 * @return NT_STATUS_OK on success, a corresponding NT status if an
554 * error occured.
555 */
556 static NTSTATUS rpc_pipe_open_internal(TALLOC_CTX *mem_ctx,
557 const struct ndr_syntax_id *abstract_syntax,
558 const struct auth_serversupplied_info *serversupplied_info,
559 struct client_address *client_id,
560 struct messaging_context *msg_ctx,
561 struct rpc_pipe_client **presult)
562 {
563 struct rpc_pipe_client *result;
564 NTSTATUS status;
565
566 result = talloc_zero(mem_ctx, struct rpc_pipe_client);
567 if (result == NULL) {
568 return NT_STATUS_NO_MEMORY;
569 }
570
571 result->abstract_syntax = *abstract_syntax;
572 result->transfer_syntax = ndr_transfer_syntax;
573
574 if (client_id == NULL) {
575 static struct client_address unknown;
576 strlcpy(unknown.addr, "<UNKNOWN>", sizeof(unknown.addr));
577 unknown.name = "<UNKNOWN>";
578 client_id = &unknown;
579 }
580
581 result->max_xmit_frag = -1;
582 result->max_recv_frag = -1;
583
584 status = rpcint_binding_handle_ex(result,
585 abstract_syntax,
586 NULL,
587 client_id,
588 serversupplied_info,
589 msg_ctx,
590 &result->binding_handle);
591 if (!NT_STATUS_IS_OK(status)) {
592 TALLOC_FREE(result);
593 return status;
594 }
595
596 *presult = result;
597 return NT_STATUS_OK;
598 }
599
600 /****************************************************************************
601 * External pipes functions
602 ***************************************************************************/
603
604
605 struct np_proxy_state *make_external_rpc_pipe_p(TALLOC_CTX *mem_ctx,
606 const char *pipe_name,
607 const struct tsocket_address *local_address,
608 const struct tsocket_address *remote_address,
609 const struct auth_serversupplied_info *session_info)
610 {
611 struct np_proxy_state *result;
612 char *socket_np_dir;
613 const char *socket_dir;
614 struct tevent_context *ev;
615 struct tevent_req *subreq;
616 struct auth_session_info_transport *session_info_t;
617 struct auth_session_info *session_info_npa;
618 struct auth_user_info_dc *user_info_dc;
619 union netr_Validation val;
620 NTSTATUS status;
621 bool ok;
622 int ret;
623 int sys_errno;
624
625 result = talloc(mem_ctx, struct np_proxy_state);
626 if (result == NULL) {
627 DEBUG(0, ("talloc failed\n"));
628 return NULL;
629 }
630
631 result->read_queue = tevent_queue_create(result, "np_read");
632 if (result->read_queue == NULL) {
633 DEBUG(0, ("tevent_queue_create failed\n"));
634 goto fail;
635 }
636
637 result->write_queue = tevent_queue_create(result, "np_write");
638 if (result->write_queue == NULL) {
639 DEBUG(0, ("tevent_queue_create failed\n"));
640 goto fail;
641 }
642
643 ev = s3_tevent_context_init(talloc_tos());
644 if (ev == NULL) {
645 DEBUG(0, ("s3_tevent_context_init failed\n"));
646 goto fail;
647 }
648
649 socket_dir = lp_parm_const_string(
650 GLOBAL_SECTION_SNUM, "external_rpc_pipe", "socket_dir",
651 lp_ncalrpc_dir());
652 if (socket_dir == NULL) {
653 DEBUG(0, ("externan_rpc_pipe:socket_dir not set\n"));
654 goto fail;
655 }
656 socket_np_dir = talloc_asprintf(talloc_tos(), "%s/np", socket_dir);
657 if (socket_np_dir == NULL) {
658 DEBUG(0, ("talloc_asprintf failed\n"));
659 goto fail;
660 }
661
662 session_info_npa = talloc_zero(talloc_tos(), struct auth_session_info);
663 if (session_info_npa == NULL) {
664 DEBUG(0, ("talloc failed\n"));
665 goto fail;
666 }
667
668 /* Send the named_pipe_auth server the user's full token */
669 session_info_npa->security_token = session_info->security_token;
670 session_info_npa->session_key = session_info->session_key;
671
672 val.sam3 = session_info->info3;
673
674 /* Convert into something we can build a struct
675 * auth_session_info from. Most of the work here
676 * will be to convert the SIDS, which we will then ignore, but
677 * this is the easier way to handle it */
678 status = make_user_info_dc_netlogon_validation(talloc_tos(), "", 3, &val, &user_info_dc);
679 if (!NT_STATUS_IS_OK(status)) {
680 DEBUG(0, ("conversion of info3 into user_info_dc failed!\n"));
681 goto fail;
682 }
683
684 session_info_npa->info = talloc_move(session_info_npa, &user_info_dc->info);
685 talloc_free(user_info_dc);
686
687 session_info_t = talloc_zero(talloc_tos(), struct auth_session_info_transport);
688 if (session_info_npa == NULL) {
689 DEBUG(0, ("talloc failed\n"));
690 goto fail;
691 }
692
693 session_info_t->session_info = talloc_steal(session_info_t, session_info_npa);
694
695 become_root();
696 subreq = tstream_npa_connect_send(talloc_tos(), ev,
697 socket_np_dir,
698 pipe_name,
699 remote_address, /* client_addr */
700 NULL, /* client_name */
701 local_address, /* server_addr */
702 NULL, /* server_name */
703 session_info_t);
704 if (subreq == NULL) {
705 unbecome_root();
706 DEBUG(0, ("tstream_npa_connect_send to %s for pipe %s and "
707 "user %s\\%s failed\n",
708 socket_np_dir, pipe_name, session_info_t->session_info->info->domain_name,
709 session_info_t->session_info->info->account_name));
710 goto fail;
711 }
712 ok = tevent_req_poll(subreq, ev);
713 unbecome_root();
714 if (!ok) {
715 DEBUG(0, ("tevent_req_poll to %s for pipe %s and user %s\\%s "
716 "failed for tstream_npa_connect: %s\n",
717 socket_np_dir, pipe_name, session_info_t->session_info->info->domain_name,
718 session_info_t->session_info->info->account_name,
719 strerror(errno)));
720 goto fail;
721
722 }
723 ret = tstream_npa_connect_recv(subreq, &sys_errno,
724 result,
725 &result->npipe,
726 &result->file_type,
727 &result->device_state,
728 &result->allocation_size);
729 TALLOC_FREE(subreq);
730 if (ret != 0) {
731 DEBUG(0, ("tstream_npa_connect_recv to %s for pipe %s and "
732 "user %s\\%s failed: %s\n",
733 socket_np_dir, pipe_name, session_info_t->session_info->info->domain_name,
734 session_info_t->session_info->info->account_name,
735 strerror(sys_errno)));
736 goto fail;
737 }
738
739 return result;
740
741 fail:
742 TALLOC_FREE(result);
743 return NULL;
744 }
745
746 static NTSTATUS rpc_pipe_open_external(TALLOC_CTX *mem_ctx,
747 const char *pipe_name,
748 const struct ndr_syntax_id *abstract_syntax,
749 const struct auth_serversupplied_info *session_info,
750 struct rpc_pipe_client **_result)
751 {
752 struct tsocket_address *local, *remote;
753 struct rpc_pipe_client *result = NULL;
754 struct np_proxy_state *proxy_state = NULL;
755 struct pipe_auth_data *auth;
756 NTSTATUS status;
757 int ret;
758
759 /* this is an internal connection, fake up ip addresses */
760 ret = tsocket_address_inet_from_strings(talloc_tos(), "ip",
761 NULL, 0, &local);
762 if (ret) {
763 return NT_STATUS_NO_MEMORY;
764 }
765 ret = tsocket_address_inet_from_strings(talloc_tos(), "ip",
766 NULL, 0, &remote);
767 if (ret) {
768 return NT_STATUS_NO_MEMORY;
769 }
770
771 proxy_state = make_external_rpc_pipe_p(mem_ctx, pipe_name,
772 local, remote, session_info);
773 if (!proxy_state) {
774 return NT_STATUS_UNSUCCESSFUL;
775 }
776
777 result = talloc_zero(mem_ctx, struct rpc_pipe_client);
778 if (result == NULL) {
779 status = NT_STATUS_NO_MEMORY;
780 goto done;
781 }
782
783 result->abstract_syntax = *abstract_syntax;
784 result->transfer_syntax = ndr_transfer_syntax;
785
786 result->desthost = get_myname(result);
787 result->srv_name_slash = talloc_asprintf_strupper_m(
788 result, "\\\\%s", result->desthost);
789 if ((result->desthost == NULL) || (result->srv_name_slash == NULL)) {
790 status = NT_STATUS_NO_MEMORY;
791 goto done;
792 }
793
794 result->max_xmit_frag = RPC_MAX_PDU_FRAG_LEN;
795 result->max_recv_frag = RPC_MAX_PDU_FRAG_LEN;
796
797 status = rpc_transport_tstream_init(result,
798 &proxy_state->npipe,
799 &result->transport);
800 if (!NT_STATUS_IS_OK(status)) {
801 goto done;
802 }
803
804 result->binding_handle = rpccli_bh_create(result);
805 if (result->binding_handle == NULL) {
806 status = NT_STATUS_NO_MEMORY;
807 DEBUG(0, ("Failed to create binding handle.\n"));
808 goto done;
809 }
810
811 result->auth = talloc_zero(result, struct pipe_auth_data);
812 if (!result->auth) {
813 status = NT_STATUS_NO_MEMORY;
814 goto done;
815 }
816 result->auth->auth_type = DCERPC_AUTH_TYPE_NONE;
817 result->auth->auth_level = DCERPC_AUTH_LEVEL_NONE;
818
819 status = rpccli_anon_bind_data(result, &auth);
820 if (!NT_STATUS_IS_OK(status)) {
821 DEBUG(0, ("Failed to initialize anonymous bind.\n"));
822 goto done;
823 }
824
825 status = rpc_pipe_bind(result, auth);
826 if (!NT_STATUS_IS_OK(status)) {
827 DEBUG(0, ("Failed to bind external pipe.\n"));
828 goto done;
829 }
830
831 done:
832 if (!NT_STATUS_IS_OK(status)) {
833 TALLOC_FREE(result);
834 }
835 TALLOC_FREE(proxy_state);
836 *_result = result;
837 return status;
838 }
839
840 /**
841 * @brief Create a new RPC client context which uses a local dispatch function
842 * or a remote transport, depending on rpc_server configuration for the
843 * specific service.
844 *
845 * @param[in] mem_ctx The memory context to use.
846 *
847 * @param[in] abstract_syntax Normally the syntax_id of the autogenerated
848 * ndr_table_<name>.
849 *
850 * @param[in] serversupplied_info The server supplied authentication function.
851 *
852 * @param[in] client_id The client address information.
853 *
854 * @param[in] msg_ctx The messaging context to use.
855 *
856 * @param[out] presult A pointer to store the connected rpc client pipe.
857 *
858 * @return NT_STATUS_OK on success, a corresponding NT status if an
859 * error occured.
860 *
861 * @code
862 * struct rpc_pipe_client *winreg_pipe;
863 * NTSTATUS status;
864 *
865 * status = rpc_pipe_open_interface(tmp_ctx,
866 * &ndr_table_winreg.syntax_id,
867 * p->session_info,
868 * client_id,
869 * &winreg_pipe);
870 * @endcode
871 */
872
873 NTSTATUS rpc_pipe_open_interface(TALLOC_CTX *mem_ctx,
874 const struct ndr_syntax_id *syntax,
875 const struct auth_serversupplied_info *session_info,
876 struct client_address *client_id,
877 struct messaging_context *msg_ctx,
878 struct rpc_pipe_client **cli_pipe)
879 {
880 struct rpc_pipe_client *cli = NULL;
881 const char *server_type;
882 const char *pipe_name;
883 NTSTATUS status;
884 TALLOC_CTX *tmp_ctx;
885
886 if (cli_pipe && rpccli_is_connected(*cli_pipe)) {
887 return NT_STATUS_OK;
888 } else {
889 TALLOC_FREE(*cli_pipe);
890 }
891
892 tmp_ctx = talloc_stackframe();
893 if (tmp_ctx == NULL) {
894 return NT_STATUS_NO_MEMORY;
895 }
896
897 pipe_name = get_pipe_name_from_syntax(tmp_ctx, syntax);
898 if (pipe_name == NULL) {
899 status = NT_STATUS_INVALID_PARAMETER;
900 goto done;
901 }
902
903 while (pipe_name[0] == '\\') {
904 pipe_name++;
905 }
906
907 DEBUG(5, ("Connecting to %s pipe.\n", pipe_name));
908
909 server_type = lp_parm_const_string(GLOBAL_SECTION_SNUM,
910 "rpc_server", pipe_name,
911 "embedded");
912
913 if (strcasecmp_m(server_type, "embedded") == 0) {
914 status = rpc_pipe_open_internal(tmp_ctx,
915 syntax, session_info,
916 client_id, msg_ctx,
917 &cli);
918 if (!NT_STATUS_IS_OK(status)) {
919 goto done;
920 }
921 } else if (strcasecmp_m(server_type, "daemon") == 0 ||
922 strcasecmp_m(server_type, "external") == 0) {
923 /* It would be nice to just use rpc_pipe_open_ncalrpc() but
924 * for now we need to use the special proxy setup to connect
925 * to spoolssd. */
926
927 status = rpc_pipe_open_external(tmp_ctx,
928 pipe_name, syntax,
929 session_info,
930 &cli);
931 if (!NT_STATUS_IS_OK(status)) {
932 goto done;
933 }
934 } else {
935 status = NT_STATUS_NOT_IMPLEMENTED;
936 DEBUG(0, ("Wrong servertype specified in config file: %s",
937 nt_errstr(status)));
938 goto done;
939 }
940
941 status = NT_STATUS_OK;
942 done:
943 if (NT_STATUS_IS_OK(status)) {
944 *cli_pipe = talloc_move(mem_ctx, &cli);
945 }
946 TALLOC_FREE(tmp_ctx);
947 return status;
948 }
reg import