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s3-passdb: Add minimal stub for IPA passdb backend
[Samba.git] / source3 / rpc_server / rpc_ncacn_np.c
blobc5c7f617f8932b09604ff4b301c3460fd7b1393d
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_server/srv_pipe_internal.h"
25 #include "rpc_dce.h"
26 #include "../libcli/named_pipe_auth/npa_tstream.h"
27 #include "rpc_server/rpc_ncacn_np.h"
28 #include "librpc/gen_ndr/netlogon.h"
29 #include "librpc/gen_ndr/auth.h"
30 #include "../auth/auth_sam_reply.h"
31
32 #undef DBGC_CLASS
33 #define DBGC_CLASS DBGC_RPC_SRV
34
35 static int pipes_open;
36
37 static struct pipes_struct *InternalPipes;
38
39 /* TODO
40 * the following prototypes are declared here to avoid
41 * code being moved about too much for a patch to be
42 * disrupted / less obvious.
43 *
44 * these functions, and associated functions that they
45 * call, should be moved behind a .so module-loading
46 * system _anyway_. so that's the next step...
47 */
48
49 /****************************************************************************
50 Internal Pipe iterator functions.
51 ****************************************************************************/
52
53 struct pipes_struct *get_first_internal_pipe(void)
54 {
55 return InternalPipes;
56 }
57
58 struct pipes_struct *get_next_internal_pipe(struct pipes_struct *p)
59 {
60 return p->next;
61 }
62
63 static void free_pipe_rpc_context_internal( PIPE_RPC_FNS *list )
64 {
65 PIPE_RPC_FNS *tmp = list;
66 PIPE_RPC_FNS *tmp2;
67
68 while (tmp) {
69 tmp2 = tmp->next;
70 SAFE_FREE(tmp);
71 tmp = tmp2;
72 }
73
74 return;
75 }
76
77 bool check_open_pipes(void)
78 {
79 struct pipes_struct *p;
80
81 for (p = InternalPipes; p != NULL; p = p->next) {
82 if (num_pipe_handles(p) != 0) {
83 return true;
84 }
85 }
86 return false;
87 }
88
89 /****************************************************************************
90 Close an rpc pipe.
91 ****************************************************************************/
92
93 int close_internal_rpc_pipe_hnd(struct pipes_struct *p)
94 {
95 if (!p) {
96 DEBUG(0,("Invalid pipe in close_internal_rpc_pipe_hnd\n"));
97 return False;
98 }
99
100 TALLOC_FREE(p->auth.auth_ctx);
101
102 free_pipe_rpc_context_internal( p->contexts );
103
104 /* Free the handles database. */
105 close_policy_by_pipe(p);
106
107 DLIST_REMOVE(InternalPipes, p);
108
109 ZERO_STRUCTP(p);
110
111 return 0;
112 }
113
114 /****************************************************************************
115 Make an internal namedpipes structure
116 ****************************************************************************/
117
118 struct pipes_struct *make_internal_rpc_pipe_p(TALLOC_CTX *mem_ctx,
119 const struct ndr_syntax_id *syntax,
120 struct client_address *client_id,
121 const struct auth_serversupplied_info *server_info,
122 struct messaging_context *msg_ctx)
123 {
124 struct pipes_struct *p;
125
126 DEBUG(4,("Create pipe requested %s\n",
127 get_pipe_name_from_syntax(talloc_tos(), syntax)));
128
129 p = TALLOC_ZERO_P(mem_ctx, struct pipes_struct);
130
131 if (!p) {
132 DEBUG(0,("ERROR! no memory for pipes_struct!\n"));
133 return NULL;
134 }
135
136 p->mem_ctx = talloc_named(p, 0, "pipe %s %p",
137 get_pipe_name_from_syntax(talloc_tos(),
138 syntax), p);
139 if (p->mem_ctx == NULL) {
140 DEBUG(0,("open_rpc_pipe_p: talloc_init failed.\n"));
141 TALLOC_FREE(p);
142 return NULL;
143 }
144
145 if (!init_pipe_handles(p, syntax)) {
146 DEBUG(0,("open_rpc_pipe_p: init_pipe_handles failed.\n"));
147 TALLOC_FREE(p);
148 return NULL;
149 }
150
151 p->server_info = copy_serverinfo(p, server_info);
152 if (p->server_info == NULL) {
153 DEBUG(0, ("open_rpc_pipe_p: copy_serverinfo failed\n"));
154 close_policy_by_pipe(p);
155 TALLOC_FREE(p);
156 return NULL;
157 }
158
159 p->msg_ctx = msg_ctx;
160
161 DLIST_ADD(InternalPipes, p);
162
163 p->client_id = client_id;
164
165 p->endian = RPC_LITTLE_ENDIAN;
166
167 p->syntax = *syntax;
168
169 DEBUG(4,("Created internal pipe %s (pipes_open=%d)\n",
170 get_pipe_name_from_syntax(talloc_tos(), syntax), pipes_open));
171
172 talloc_set_destructor(p, close_internal_rpc_pipe_hnd);
173
174 return p;
175 }
176
177 static NTSTATUS rpcint_dispatch(struct pipes_struct *p,
178 TALLOC_CTX *mem_ctx,
179 uint32_t opnum,
180 const DATA_BLOB *in_data,
181 DATA_BLOB *out_data)
182 {
183 uint32_t num_cmds = rpc_srv_get_pipe_num_cmds(&p->syntax);
184 const struct api_struct *cmds = rpc_srv_get_pipe_cmds(&p->syntax);
185 uint32_t i;
186 bool ok;
187
188 /* set opnum */
189 p->opnum = opnum;
190
191 for (i = 0; i < num_cmds; i++) {
192 if (cmds[i].opnum == opnum && cmds[i].fn != NULL) {
193 break;
194 }
195 }
196
197 if (i == num_cmds) {
198 return NT_STATUS_RPC_PROCNUM_OUT_OF_RANGE;
199 }
200
201 p->in_data.data = *in_data;
202 p->out_data.rdata = data_blob_null;
203
204 ok = cmds[i].fn(p);
205 p->in_data.data = data_blob_null;
206 if (!ok) {
207 data_blob_free(&p->out_data.rdata);
208 talloc_free_children(p->mem_ctx);
209 return NT_STATUS_RPC_CALL_FAILED;
210 }
211
212 if (p->fault_state) {
213 p->fault_state = false;
214 data_blob_free(&p->out_data.rdata);
215 talloc_free_children(p->mem_ctx);
216 return NT_STATUS_RPC_CALL_FAILED;
217 }
218
219 if (p->bad_handle_fault_state) {
220 p->bad_handle_fault_state = false;
221 data_blob_free(&p->out_data.rdata);
222 talloc_free_children(p->mem_ctx);
223 return NT_STATUS_RPC_SS_CONTEXT_MISMATCH;
224 }
225
226 if (p->rng_fault_state) {
227 p->rng_fault_state = false;
228 data_blob_free(&p->out_data.rdata);
229 talloc_free_children(p->mem_ctx);
230 return NT_STATUS_RPC_PROCNUM_OUT_OF_RANGE;
231 }
232
233 *out_data = p->out_data.rdata;
234 talloc_steal(mem_ctx, out_data->data);
235 p->out_data.rdata = data_blob_null;
236
237 talloc_free_children(p->mem_ctx);
238 return NT_STATUS_OK;
239 }
240
241 struct rpcint_bh_state {
242 struct pipes_struct *p;
243 };
244
245 static bool rpcint_bh_is_connected(struct dcerpc_binding_handle *h)
246 {
247 struct rpcint_bh_state *hs = dcerpc_binding_handle_data(h,
248 struct rpcint_bh_state);
249
250 if (!hs->p) {
251 return false;
252 }
253
254 return true;
255 }
256
257 static uint32_t rpcint_bh_set_timeout(struct dcerpc_binding_handle *h,
258 uint32_t timeout)
259 {
260 /* TODO: implement timeouts */
261 return UINT32_MAX;
262 }
263
264 struct rpcint_bh_raw_call_state {
265 DATA_BLOB in_data;
266 DATA_BLOB out_data;
267 uint32_t out_flags;
268 };
269
270 static struct tevent_req *rpcint_bh_raw_call_send(TALLOC_CTX *mem_ctx,
271 struct tevent_context *ev,
272 struct dcerpc_binding_handle *h,
273 const struct GUID *object,
274 uint32_t opnum,
275 uint32_t in_flags,
276 const uint8_t *in_data,
277 size_t in_length)
278 {
279 struct rpcint_bh_state *hs =
280 dcerpc_binding_handle_data(h,
281 struct rpcint_bh_state);
282 struct tevent_req *req;
283 struct rpcint_bh_raw_call_state *state;
284 bool ok;
285 NTSTATUS status;
286
287 req = tevent_req_create(mem_ctx, &state,
288 struct rpcint_bh_raw_call_state);
289 if (req == NULL) {
290 return NULL;
291 }
292 state->in_data.data = discard_const_p(uint8_t, in_data);
293 state->in_data.length = in_length;
294
295 ok = rpcint_bh_is_connected(h);
296 if (!ok) {
297 tevent_req_nterror(req, NT_STATUS_INVALID_CONNECTION);
298 return tevent_req_post(req, ev);
299 }
300
301 /* TODO: allow async */
302 status = rpcint_dispatch(hs->p, state, opnum,
303 &state->in_data,
304 &state->out_data);
305 if (!NT_STATUS_IS_OK(status)) {
306 tevent_req_nterror(req, status);
307 return tevent_req_post(req, ev);
308 }
309
310 tevent_req_done(req);
311 return tevent_req_post(req, ev);
312 }
313
314 static NTSTATUS rpcint_bh_raw_call_recv(struct tevent_req *req,
315 TALLOC_CTX *mem_ctx,
316 uint8_t **out_data,
317 size_t *out_length,
318 uint32_t *out_flags)
319 {
320 struct rpcint_bh_raw_call_state *state =
321 tevent_req_data(req,
322 struct rpcint_bh_raw_call_state);
323 NTSTATUS status;
324
325 if (tevent_req_is_nterror(req, &status)) {
326 tevent_req_received(req);
327 return status;
328 }
329
330 *out_data = talloc_move(mem_ctx, &state->out_data.data);
331 *out_length = state->out_data.length;
332 *out_flags = 0;
333 tevent_req_received(req);
334 return NT_STATUS_OK;
335 }
336
337 struct rpcint_bh_disconnect_state {
338 uint8_t _dummy;
339 };
340
341 static struct tevent_req *rpcint_bh_disconnect_send(TALLOC_CTX *mem_ctx,
342 struct tevent_context *ev,
343 struct dcerpc_binding_handle *h)
344 {
345 struct rpcint_bh_state *hs = dcerpc_binding_handle_data(h,
346 struct rpcint_bh_state);
347 struct tevent_req *req;
348 struct rpcint_bh_disconnect_state *state;
349 bool ok;
350
351 req = tevent_req_create(mem_ctx, &state,
352 struct rpcint_bh_disconnect_state);
353 if (req == NULL) {
354 return NULL;
355 }
356
357 ok = rpcint_bh_is_connected(h);
358 if (!ok) {
359 tevent_req_nterror(req, NT_STATUS_INVALID_CONNECTION);
360 return tevent_req_post(req, ev);
361 }
362
363 /*
364 * TODO: do a real async disconnect ...
365 *
366 * For now the caller needs to free pipes_struct
367 */
368 hs->p = NULL;
369
370 tevent_req_done(req);
371 return tevent_req_post(req, ev);
372 }
373
374 static NTSTATUS rpcint_bh_disconnect_recv(struct tevent_req *req)
375 {
376 NTSTATUS status;
377
378 if (tevent_req_is_nterror(req, &status)) {
379 tevent_req_received(req);
380 return status;
381 }
382
383 tevent_req_received(req);
384 return NT_STATUS_OK;
385 }
386
387 static bool rpcint_bh_ref_alloc(struct dcerpc_binding_handle *h)
388 {
389 return true;
390 }
391
392 static void rpcint_bh_do_ndr_print(struct dcerpc_binding_handle *h,
393 int ndr_flags,
394 const void *_struct_ptr,
395 const struct ndr_interface_call *call)
396 {
397 void *struct_ptr = discard_const(_struct_ptr);
398
399 if (DEBUGLEVEL < 11) {
400 return;
401 }
402
403 if (ndr_flags & NDR_IN) {
404 ndr_print_function_debug(call->ndr_print,
405 call->name,
406 ndr_flags,
407 struct_ptr);
408 }
409 if (ndr_flags & NDR_OUT) {
410 ndr_print_function_debug(call->ndr_print,
411 call->name,
412 ndr_flags,
413 struct_ptr);
414 }
415 }
416
417 static const struct dcerpc_binding_handle_ops rpcint_bh_ops = {
418 .name = "rpcint",
419 .is_connected = rpcint_bh_is_connected,
420 .set_timeout = rpcint_bh_set_timeout,
421 .raw_call_send = rpcint_bh_raw_call_send,
422 .raw_call_recv = rpcint_bh_raw_call_recv,
423 .disconnect_send = rpcint_bh_disconnect_send,
424 .disconnect_recv = rpcint_bh_disconnect_recv,
425
426 .ref_alloc = rpcint_bh_ref_alloc,
427 .do_ndr_print = rpcint_bh_do_ndr_print,
428 };
429
430 static NTSTATUS rpcint_binding_handle_ex(TALLOC_CTX *mem_ctx,
431 const struct ndr_syntax_id *abstract_syntax,
432 const struct ndr_interface_table *ndr_table,
433 struct client_address *client_id,
434 const struct auth_serversupplied_info *server_info,
435 struct messaging_context *msg_ctx,
436 struct dcerpc_binding_handle **binding_handle)
437 {
438 struct dcerpc_binding_handle *h;
439 struct rpcint_bh_state *hs;
440
441 if (ndr_table) {
442 abstract_syntax = &ndr_table->syntax_id;
443 }
444
445 h = dcerpc_binding_handle_create(mem_ctx,
446 &rpcint_bh_ops,
447 NULL,
448 ndr_table,
449 &hs,
450 struct rpcint_bh_state,
451 __location__);
452 if (h == NULL) {
453 return NT_STATUS_NO_MEMORY;
454 }
455 hs->p = make_internal_rpc_pipe_p(hs,
456 abstract_syntax,
457 client_id,
458 server_info,
459 msg_ctx);
460 if (hs->p == NULL) {
461 TALLOC_FREE(h);
462 return NT_STATUS_NO_MEMORY;
463 }
464
465 *binding_handle = h;
466 return NT_STATUS_OK;
467 }
468 /**
469 * @brief Create a new DCERPC Binding Handle which uses a local dispatch function.
470 *
471 * @param[in] mem_ctx The memory context to use.
472 *
473 * @param[in] ndr_table Normally the ndr_table_<name>.
474 *
475 * @param[in] client_id The info about the connected client.
476 *
477 * @param[in] serversupplied_info The server supplied authentication function.
478 *
479 * @param[in] msg_ctx The messaging context that can be used by the server
480 *
481 * @param[out] binding_handle A pointer to store the connected
482 * dcerpc_binding_handle
483 *
484 * @return NT_STATUS_OK on success, a corresponding NT status if an
485 * error occured.
486 *
487 * @code
488 * struct dcerpc_binding_handle *winreg_binding;
489 * NTSTATUS status;
490 *
491 * status = rpcint_binding_handle(tmp_ctx,
492 * &ndr_table_winreg,
493 * p->client_id,
494 * p->server_info,
495 * p->msg_ctx
496 * &winreg_binding);
497 * @endcode
498 */
499 NTSTATUS rpcint_binding_handle(TALLOC_CTX *mem_ctx,
500 const struct ndr_interface_table *ndr_table,
501 struct client_address *client_id,
502 const struct auth_serversupplied_info *server_info,
503 struct messaging_context *msg_ctx,
504 struct dcerpc_binding_handle **binding_handle)
505 {
506 return rpcint_binding_handle_ex(mem_ctx, NULL, ndr_table, client_id,
507 server_info, msg_ctx, binding_handle);
508 }
509
510 /**
511 * @brief Create a new RPC client context which uses a local dispatch function.
512 *
513 * @param[in] mem_ctx The memory context to use.
514 *
515 * @param[in] abstract_syntax Normally the syntax_id of the autogenerated
516 * ndr_table_<name>.
517 *
518 * @param[in] dispatch The corresponding autogenerated dispatch function
519 * rpc_<name>_dispatch.
520 *
521 * @param[in] serversupplied_info The server supplied authentication function.
522 *
523 * @param[out] presult A pointer to store the connected rpc client pipe.
524 *
525 * @return NT_STATUS_OK on success, a corresponding NT status if an
526 * error occured.
527 *
528 * @code
529 * struct rpc_pipe_client *winreg_pipe;
530 * NTSTATUS status;
531 *
532 * status = rpc_pipe_open_internal(tmp_ctx,
533 * &ndr_table_winreg.syntax_id,
534 * rpc_winreg_dispatch,
535 * p->server_info,
536 * &winreg_pipe);
537 * @endcode
538 */
539 NTSTATUS rpc_pipe_open_internal(TALLOC_CTX *mem_ctx,
540 const struct ndr_syntax_id *abstract_syntax,
541 const struct auth_serversupplied_info *serversupplied_info,
542 struct client_address *client_id,
543 struct messaging_context *msg_ctx,
544 struct rpc_pipe_client **presult)
545 {
546 struct rpc_pipe_client *result;
547 NTSTATUS status;
548
549 result = TALLOC_ZERO_P(mem_ctx, struct rpc_pipe_client);
550 if (result == NULL) {
551 return NT_STATUS_NO_MEMORY;
552 }
553
554 result->abstract_syntax = *abstract_syntax;
555 result->transfer_syntax = ndr_transfer_syntax;
556
557 if (client_id == NULL) {
558 static struct client_address unknown;
559 strlcpy(unknown.addr, "<UNKNOWN>", sizeof(unknown.addr));
560 unknown.name = "<UNKNOWN>";
561 client_id = &unknown;
562 }
563
564 result->max_xmit_frag = -1;
565 result->max_recv_frag = -1;
566
567 status = rpcint_binding_handle_ex(result,
568 abstract_syntax,
569 NULL,
570 client_id,
571 serversupplied_info,
572 msg_ctx,
573 &result->binding_handle);
574 if (!NT_STATUS_IS_OK(status)) {
575 TALLOC_FREE(result);
576 return status;
577 }
578
579 *presult = result;
580 return NT_STATUS_OK;
581 }
582
583 /****************************************************************************
584 * External pipes functions
585 ***************************************************************************/
586
587
588 struct np_proxy_state *make_external_rpc_pipe_p(TALLOC_CTX *mem_ctx,
589 const char *pipe_name,
590 const struct tsocket_address *local_address,
591 const struct tsocket_address *remote_address,
592 const struct auth_serversupplied_info *server_info)
593 {
594 struct np_proxy_state *result;
595 char *socket_np_dir;
596 const char *socket_dir;
597 struct tevent_context *ev;
598 struct tevent_req *subreq;
599 struct auth_session_info_transport *session_info;
600 struct auth_user_info_dc *user_info_dc;
601 union netr_Validation val;
602 NTSTATUS status;
603 bool ok;
604 int ret;
605 int sys_errno;
606
607 result = talloc(mem_ctx, struct np_proxy_state);
608 if (result == NULL) {
609 DEBUG(0, ("talloc failed\n"));
610 return NULL;
611 }
612
613 result->read_queue = tevent_queue_create(result, "np_read");
614 if (result->read_queue == NULL) {
615 DEBUG(0, ("tevent_queue_create failed\n"));
616 goto fail;
617 }
618
619 result->write_queue = tevent_queue_create(result, "np_write");
620 if (result->write_queue == NULL) {
621 DEBUG(0, ("tevent_queue_create failed\n"));
622 goto fail;
623 }
624
625 ev = s3_tevent_context_init(talloc_tos());
626 if (ev == NULL) {
627 DEBUG(0, ("s3_tevent_context_init failed\n"));
628 goto fail;
629 }
630
631 socket_dir = lp_parm_const_string(
632 GLOBAL_SECTION_SNUM, "external_rpc_pipe", "socket_dir",
633 lp_ncalrpc_dir());
634 if (socket_dir == NULL) {
635 DEBUG(0, ("externan_rpc_pipe:socket_dir not set\n"));
636 goto fail;
637 }
638 socket_np_dir = talloc_asprintf(talloc_tos(), "%s/np", socket_dir);
639 if (socket_np_dir == NULL) {
640 DEBUG(0, ("talloc_asprintf failed\n"));
641 goto fail;
642 }
643
644 session_info = talloc_zero(talloc_tos(), struct auth_session_info_transport);
645 if (session_info == NULL) {
646 DEBUG(0, ("talloc failed\n"));
647 goto fail;
648 }
649
650 /* Send the named_pipe_auth server the user's full token */
651 session_info->security_token = server_info->security_token;
652 session_info->session_key = server_info->user_session_key;
653
654 val.sam3 = server_info->info3;
655
656 /* Convert into something we can build a struct
657 * auth_session_info_transport from. Most of the work here
658 * will be to convert the SIDS, which we will then ignore, but
659 * this is the easier way to handle it */
660 status = make_user_info_dc_netlogon_validation(talloc_tos(), "", 3, &val, &user_info_dc);
661 if (!NT_STATUS_IS_OK(status)) {
662 DEBUG(0, ("conversion of info3 into user_info_dc failed!\n"));
663 goto fail;
664 }
665
666 session_info->info = talloc_move(session_info, &user_info_dc->info);
667 talloc_free(user_info_dc);
668
669 become_root();
670 subreq = tstream_npa_connect_send(talloc_tos(), ev,
671 socket_np_dir,
672 pipe_name,
673 remote_address, /* client_addr */
674 NULL, /* client_name */
675 local_address, /* server_addr */
676 NULL, /* server_name */
677 session_info);
678 if (subreq == NULL) {
679 unbecome_root();
680 DEBUG(0, ("tstream_npa_connect_send to %s for pipe %s and "
681 "user %s\\%s failed\n",
682 socket_np_dir, pipe_name, session_info->info->domain_name,
683 session_info->info->account_name));
684 goto fail;
685 }
686 ok = tevent_req_poll(subreq, ev);
687 unbecome_root();
688 if (!ok) {
689 DEBUG(0, ("tevent_req_poll to %s for pipe %s and user %s\\%s "
690 "failed for tstream_npa_connect: %s\n",
691 socket_np_dir, pipe_name, session_info->info->domain_name,
692 session_info->info->account_name,
693 strerror(errno)));
694 goto fail;
695
696 }
697 ret = tstream_npa_connect_recv(subreq, &sys_errno,
698 result,
699 &result->npipe,
700 &result->file_type,
701 &result->device_state,
702 &result->allocation_size);
703 TALLOC_FREE(subreq);
704 if (ret != 0) {
705 DEBUG(0, ("tstream_npa_connect_recv to %s for pipe %s and "
706 "user %s\\%s failed: %s\n",
707 socket_np_dir, pipe_name, session_info->info->domain_name,
708 session_info->info->account_name,
709 strerror(sys_errno)));
710 goto fail;
711 }
712
713 return result;
714
715 fail:
716 TALLOC_FREE(result);
717 return NULL;
718 }
719
720 static NTSTATUS rpc_pipe_open_external(TALLOC_CTX *mem_ctx,
721 const char *pipe_name,
722 const struct ndr_syntax_id *abstract_syntax,
723 const struct auth_serversupplied_info *server_info,
724 struct rpc_pipe_client **_result)
725 {
726 struct tsocket_address *local, *remote;
727 struct rpc_pipe_client *result = NULL;
728 struct np_proxy_state *proxy_state = NULL;
729 struct pipe_auth_data *auth;
730 NTSTATUS status;
731 int ret;
732
733 /* this is an internal connection, fake up ip addresses */
734 ret = tsocket_address_inet_from_strings(talloc_tos(), "ip",
735 NULL, 0, &local);
736 if (ret) {
737 return NT_STATUS_NO_MEMORY;
738 }
739 ret = tsocket_address_inet_from_strings(talloc_tos(), "ip",
740 NULL, 0, &remote);
741 if (ret) {
742 return NT_STATUS_NO_MEMORY;
743 }
744
745 proxy_state = make_external_rpc_pipe_p(mem_ctx, pipe_name,
746 local, remote, server_info);
747 if (!proxy_state) {
748 return NT_STATUS_UNSUCCESSFUL;
749 }
750
751 result = talloc_zero(mem_ctx, struct rpc_pipe_client);
752 if (result == NULL) {
753 status = NT_STATUS_NO_MEMORY;
754 goto done;
755 }
756
757 result->abstract_syntax = *abstract_syntax;
758 result->transfer_syntax = ndr_transfer_syntax;
759
760 result->desthost = get_myname(result);
761 result->srv_name_slash = talloc_asprintf_strupper_m(
762 result, "\\\\%s", result->desthost);
763 if ((result->desthost == NULL) || (result->srv_name_slash == NULL)) {
764 status = NT_STATUS_NO_MEMORY;
765 goto done;
766 }
767
768 result->max_xmit_frag = RPC_MAX_PDU_FRAG_LEN;
769 result->max_recv_frag = RPC_MAX_PDU_FRAG_LEN;
770
771 status = rpc_transport_tstream_init(result,
772 &proxy_state->npipe,
773 &result->transport);
774 if (!NT_STATUS_IS_OK(status)) {
775 goto done;
776 }
777
778 result->binding_handle = rpccli_bh_create(result);
779 if (result->binding_handle == NULL) {
780 status = NT_STATUS_NO_MEMORY;
781 DEBUG(0, ("Failed to create binding handle.\n"));
782 goto done;
783 }
784
785 result->auth = talloc_zero(result, struct pipe_auth_data);
786 if (!result->auth) {
787 status = NT_STATUS_NO_MEMORY;
788 goto done;
789 }
790 result->auth->auth_type = DCERPC_AUTH_TYPE_NONE;
791 result->auth->auth_level = DCERPC_AUTH_LEVEL_NONE;
792
793 status = rpccli_anon_bind_data(result, &auth);
794 if (!NT_STATUS_IS_OK(status)) {
795 DEBUG(0, ("Failed to initialize anonymous bind.\n"));
796 goto done;
797 }
798
799 status = rpc_pipe_bind(result, auth);
800 if (!NT_STATUS_IS_OK(status)) {
801 DEBUG(0, ("Failed to bind external pipe.\n"));
802 goto done;
803 }
804
805 done:
806 if (!NT_STATUS_IS_OK(status)) {
807 TALLOC_FREE(result);
808 }
809 TALLOC_FREE(proxy_state);
810 *_result = result;
811 return status;
812 }
813
814 /**
815 * @brief Create a new RPC client context which uses a local dispatch function.
816 *
817 * @param mem_ctx The memory context on which thje pipe will ultimately
818 * be allocated
819 * @param name The pipe name to connect to.
820 * @param server_info Credentials to use for the connection.
821 * @param pipe [in|out] Checks if a pipe is connected, and connects it
822 * if not
823 *
824 * @return NT_STATUS_OK on success, a corresponding NT status if
825 * an error occured.
826 */
827
828 NTSTATUS rpc_pipe_open_interface(TALLOC_CTX *mem_ctx,
829 const struct ndr_syntax_id *syntax,
830 const struct auth_serversupplied_info *server_info,
831 struct client_address *client_id,
832 struct messaging_context *msg_ctx,
833 struct rpc_pipe_client **cli_pipe)
834 {
835 struct rpc_pipe_client *cli = NULL;
836 const char *server_type;
837 const char *pipe_name;
838 NTSTATUS status;
839 TALLOC_CTX *tmp_ctx;
840
841 if (cli_pipe && rpccli_is_connected(*cli_pipe)) {
842 return NT_STATUS_OK;
843 } else {
844 TALLOC_FREE(*cli_pipe);
845 }
846
847 tmp_ctx = talloc_stackframe();
848 if (tmp_ctx == NULL) {
849 return NT_STATUS_NO_MEMORY;
850 }
851
852 pipe_name = get_pipe_name_from_syntax(tmp_ctx, syntax);
853 if (pipe_name == NULL) {
854 status = NT_STATUS_INVALID_PARAMETER;
855 goto done;
856 }
857
858 while (pipe_name[0] == '\\') {
859 pipe_name++;
860 }
861
862 DEBUG(5, ("Connecting to %s pipe.\n", pipe_name));
863
864 server_type = lp_parm_const_string(GLOBAL_SECTION_SNUM,
865 "rpc_server", pipe_name,
866 "embedded");
867
868 if (StrCaseCmp(server_type, "embedded") == 0) {
869 status = rpc_pipe_open_internal(tmp_ctx,
870 syntax, server_info,
871 client_id, msg_ctx,
872 &cli);
873 if (!NT_STATUS_IS_OK(status)) {
874 goto done;
875 }
876 } else {
877 /* It would be nice to just use rpc_pipe_open_ncalrpc() but
878 * for now we need to use the special proxy setup to connect
879 * to spoolssd. */
880
881 status = rpc_pipe_open_external(tmp_ctx,
882 pipe_name, syntax,
883 server_info,
884 &cli);
885 if (!NT_STATUS_IS_OK(status)) {
886 goto done;
887 }
888 }
889
890 status = NT_STATUS_OK;
891 done:
892 if (NT_STATUS_IS_OK(status)) {
893 *cli_pipe = talloc_move(mem_ctx, &cli);
894 }
895 TALLOC_FREE(tmp_ctx);
896 return status;
897 }
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