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[Samba/gebeck_regimport.git] / source3 / rpc_server / rpc_ncacn_np.c
blob68d2ebc668755feff9d910215b9dbbc436f9c730
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 * Copyright (C) Andrew Bartlett 2011
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 3 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, see <http://www.gnu.org/licenses/>.
22 */
23
24 #include "includes.h"
25 #include "rpc_client/cli_pipe.h"
26 #include "rpc_server/srv_pipe_internal.h"
27 #include "rpc_dce.h"
28 #include "../libcli/named_pipe_auth/npa_tstream.h"
29 #include "rpc_server/rpc_ncacn_np.h"
30 #include "librpc/gen_ndr/netlogon.h"
31 #include "librpc/gen_ndr/auth.h"
32 #include "../auth/auth_sam_reply.h"
33 #include "auth.h"
34 #include "ntdomain.h"
35 #include "../lib/tsocket/tsocket.h"
36 #include "../lib/util/tevent_ntstatus.h"
37 #include "rpc_contexts.h"
38
39 #undef DBGC_CLASS
40 #define DBGC_CLASS DBGC_RPC_SRV
41
42 static struct pipes_struct *InternalPipes;
43
44 /* TODO
45 * the following prototypes are declared here to avoid
46 * code being moved about too much for a patch to be
47 * disrupted / less obvious.
48 *
49 * these functions, and associated functions that they
50 * call, should be moved behind a .so module-loading
51 * system _anyway_. so that's the next step...
52 */
53
54 /****************************************************************************
55 Internal Pipe iterator functions.
56 ****************************************************************************/
57
58 struct pipes_struct *get_first_internal_pipe(void)
59 {
60 return InternalPipes;
61 }
62
63 struct pipes_struct *get_next_internal_pipe(struct pipes_struct *p)
64 {
65 return p->next;
66 }
67
68 static void free_pipe_rpc_context_internal( PIPE_RPC_FNS *list )
69 {
70 PIPE_RPC_FNS *tmp = list;
71 PIPE_RPC_FNS *tmp2;
72
73 while (tmp) {
74 tmp2 = tmp->next;
75 SAFE_FREE(tmp);
76 tmp = tmp2;
77 }
78
79 return;
80 }
81
82 bool check_open_pipes(void)
83 {
84 struct pipes_struct *p;
85
86 for (p = InternalPipes; p != NULL; p = p->next) {
87 if (num_pipe_handles(p) != 0) {
88 return true;
89 }
90 }
91 return false;
92 }
93
94 /****************************************************************************
95 Close an rpc pipe.
96 ****************************************************************************/
97
98 int close_internal_rpc_pipe_hnd(struct pipes_struct *p)
99 {
100 if (!p) {
101 DEBUG(0,("Invalid pipe in close_internal_rpc_pipe_hnd\n"));
102 return False;
103 }
104
105 TALLOC_FREE(p->auth.auth_ctx);
106
107 /* Free the handles database. */
108 close_policy_by_pipe(p);
109
110 free_pipe_rpc_context_internal( p->contexts );
111
112 DLIST_REMOVE(InternalPipes, p);
113
114 ZERO_STRUCTP(p);
115
116 return 0;
117 }
118
119 /****************************************************************************
120 Make an internal namedpipes structure
121 ****************************************************************************/
122
123 struct pipes_struct *make_internal_rpc_pipe_p(TALLOC_CTX *mem_ctx,
124 const struct ndr_syntax_id *syntax,
125 const struct tsocket_address *remote_address,
126 const struct auth_serversupplied_info *session_info,
127 struct messaging_context *msg_ctx)
128 {
129 struct pipes_struct *p;
130 struct pipe_rpc_fns *context_fns;
131
132 DEBUG(4,("Create pipe requested %s\n",
133 get_pipe_name_from_syntax(talloc_tos(), syntax)));
134
135 p = talloc_zero(mem_ctx, struct pipes_struct);
136
137 if (!p) {
138 DEBUG(0,("ERROR! no memory for pipes_struct!\n"));
139 return NULL;
140 }
141
142 p->mem_ctx = talloc_named(p, 0, "pipe %s %p",
143 get_pipe_name_from_syntax(talloc_tos(),
144 syntax), p);
145 if (p->mem_ctx == NULL) {
146 DEBUG(0,("open_rpc_pipe_p: talloc_init failed.\n"));
147 TALLOC_FREE(p);
148 return NULL;
149 }
150
151 if (!init_pipe_handles(p, syntax)) {
152 DEBUG(0,("open_rpc_pipe_p: init_pipe_handles failed.\n"));
153 TALLOC_FREE(p);
154 return NULL;
155 }
156
157 p->session_info = copy_serverinfo(p, session_info);
158 if (p->session_info == NULL) {
159 DEBUG(0, ("open_rpc_pipe_p: copy_serverinfo failed\n"));
160 close_policy_by_pipe(p);
161 TALLOC_FREE(p);
162 return NULL;
163 }
164
165 p->msg_ctx = msg_ctx;
166
167 DLIST_ADD(InternalPipes, p);
168
169 p->remote_address = tsocket_address_copy(remote_address, p);
170 if (p->remote_address == NULL) {
171 return false;
172 }
173
174 p->endian = RPC_LITTLE_ENDIAN;
175
176 p->transport = NCALRPC;
177
178 context_fns = SMB_MALLOC_P(struct pipe_rpc_fns);
179 if (context_fns == NULL) {
180 DEBUG(0,("malloc() failed!\n"));
181 return False;
182 }
183
184 context_fns->next = context_fns->prev = NULL;
185 context_fns->n_cmds = rpc_srv_get_pipe_num_cmds(syntax);
186 context_fns->cmds = rpc_srv_get_pipe_cmds(syntax);
187 context_fns->context_id = 0;
188 context_fns->syntax = *syntax;
189
190 /* add to the list of open contexts */
191 DLIST_ADD(p->contexts, context_fns);
192
193 DEBUG(4,("Created internal pipe %s\n",
194 get_pipe_name_from_syntax(talloc_tos(), syntax)));
195
196 talloc_set_destructor(p, close_internal_rpc_pipe_hnd);
197
198 return p;
199 }
200
201 static NTSTATUS rpcint_dispatch(struct pipes_struct *p,
202 TALLOC_CTX *mem_ctx,
203 uint32_t opnum,
204 const DATA_BLOB *in_data,
205 DATA_BLOB *out_data)
206 {
207 struct pipe_rpc_fns *fns = find_pipe_fns_by_context(p->contexts, 0);
208 uint32_t num_cmds = fns->n_cmds;
209 const struct api_struct *cmds = fns->cmds;
210 uint32_t i;
211 bool ok;
212
213 /* set opnum */
214 p->opnum = opnum;
215
216 for (i = 0; i < num_cmds; i++) {
217 if (cmds[i].opnum == opnum && cmds[i].fn != NULL) {
218 break;
219 }
220 }
221
222 if (i == num_cmds) {
223 return NT_STATUS_RPC_PROCNUM_OUT_OF_RANGE;
224 }
225
226 p->in_data.data = *in_data;
227 p->out_data.rdata = data_blob_null;
228
229 ok = cmds[i].fn(p);
230 p->in_data.data = data_blob_null;
231 if (!ok) {
232 data_blob_free(&p->out_data.rdata);
233 talloc_free_children(p->mem_ctx);
234 return NT_STATUS_RPC_CALL_FAILED;
235 }
236
237 if (p->fault_state) {
238 p->fault_state = false;
239 data_blob_free(&p->out_data.rdata);
240 talloc_free_children(p->mem_ctx);
241 return NT_STATUS_RPC_CALL_FAILED;
242 }
243
244 if (p->bad_handle_fault_state) {
245 p->bad_handle_fault_state = false;
246 data_blob_free(&p->out_data.rdata);
247 talloc_free_children(p->mem_ctx);
248 return NT_STATUS_RPC_SS_CONTEXT_MISMATCH;
249 }
250
251 if (p->rng_fault_state) {
252 p->rng_fault_state = false;
253 data_blob_free(&p->out_data.rdata);
254 talloc_free_children(p->mem_ctx);
255 return NT_STATUS_RPC_PROCNUM_OUT_OF_RANGE;
256 }
257
258 *out_data = p->out_data.rdata;
259 talloc_steal(mem_ctx, out_data->data);
260 p->out_data.rdata = data_blob_null;
261
262 talloc_free_children(p->mem_ctx);
263 return NT_STATUS_OK;
264 }
265
266 struct rpcint_bh_state {
267 struct pipes_struct *p;
268 };
269
270 static bool rpcint_bh_is_connected(struct dcerpc_binding_handle *h)
271 {
272 struct rpcint_bh_state *hs = dcerpc_binding_handle_data(h,
273 struct rpcint_bh_state);
274
275 if (!hs->p) {
276 return false;
277 }
278
279 return true;
280 }
281
282 static uint32_t rpcint_bh_set_timeout(struct dcerpc_binding_handle *h,
283 uint32_t timeout)
284 {
285 /* TODO: implement timeouts */
286 return UINT32_MAX;
287 }
288
289 struct rpcint_bh_raw_call_state {
290 DATA_BLOB in_data;
291 DATA_BLOB out_data;
292 uint32_t out_flags;
293 };
294
295 static struct tevent_req *rpcint_bh_raw_call_send(TALLOC_CTX *mem_ctx,
296 struct tevent_context *ev,
297 struct dcerpc_binding_handle *h,
298 const struct GUID *object,
299 uint32_t opnum,
300 uint32_t in_flags,
301 const uint8_t *in_data,
302 size_t in_length)
303 {
304 struct rpcint_bh_state *hs =
305 dcerpc_binding_handle_data(h,
306 struct rpcint_bh_state);
307 struct tevent_req *req;
308 struct rpcint_bh_raw_call_state *state;
309 bool ok;
310 NTSTATUS status;
311
312 req = tevent_req_create(mem_ctx, &state,
313 struct rpcint_bh_raw_call_state);
314 if (req == NULL) {
315 return NULL;
316 }
317 state->in_data.data = discard_const_p(uint8_t, in_data);
318 state->in_data.length = in_length;
319
320 ok = rpcint_bh_is_connected(h);
321 if (!ok) {
322 tevent_req_nterror(req, NT_STATUS_INVALID_CONNECTION);
323 return tevent_req_post(req, ev);
324 }
325
326 /* TODO: allow async */
327 status = rpcint_dispatch(hs->p, state, opnum,
328 &state->in_data,
329 &state->out_data);
330 if (!NT_STATUS_IS_OK(status)) {
331 tevent_req_nterror(req, status);
332 return tevent_req_post(req, ev);
333 }
334
335 tevent_req_done(req);
336 return tevent_req_post(req, ev);
337 }
338
339 static NTSTATUS rpcint_bh_raw_call_recv(struct tevent_req *req,
340 TALLOC_CTX *mem_ctx,
341 uint8_t **out_data,
342 size_t *out_length,
343 uint32_t *out_flags)
344 {
345 struct rpcint_bh_raw_call_state *state =
346 tevent_req_data(req,
347 struct rpcint_bh_raw_call_state);
348 NTSTATUS status;
349
350 if (tevent_req_is_nterror(req, &status)) {
351 tevent_req_received(req);
352 return status;
353 }
354
355 *out_data = talloc_move(mem_ctx, &state->out_data.data);
356 *out_length = state->out_data.length;
357 *out_flags = 0;
358 tevent_req_received(req);
359 return NT_STATUS_OK;
360 }
361
362 struct rpcint_bh_disconnect_state {
363 uint8_t _dummy;
364 };
365
366 static struct tevent_req *rpcint_bh_disconnect_send(TALLOC_CTX *mem_ctx,
367 struct tevent_context *ev,
368 struct dcerpc_binding_handle *h)
369 {
370 struct rpcint_bh_state *hs = dcerpc_binding_handle_data(h,
371 struct rpcint_bh_state);
372 struct tevent_req *req;
373 struct rpcint_bh_disconnect_state *state;
374 bool ok;
375
376 req = tevent_req_create(mem_ctx, &state,
377 struct rpcint_bh_disconnect_state);
378 if (req == NULL) {
379 return NULL;
380 }
381
382 ok = rpcint_bh_is_connected(h);
383 if (!ok) {
384 tevent_req_nterror(req, NT_STATUS_INVALID_CONNECTION);
385 return tevent_req_post(req, ev);
386 }
387
388 /*
389 * TODO: do a real async disconnect ...
390 *
391 * For now the caller needs to free pipes_struct
392 */
393 hs->p = NULL;
394
395 tevent_req_done(req);
396 return tevent_req_post(req, ev);
397 }
398
399 static NTSTATUS rpcint_bh_disconnect_recv(struct tevent_req *req)
400 {
401 NTSTATUS status;
402
403 if (tevent_req_is_nterror(req, &status)) {
404 tevent_req_received(req);
405 return status;
406 }
407
408 tevent_req_received(req);
409 return NT_STATUS_OK;
410 }
411
412 static bool rpcint_bh_ref_alloc(struct dcerpc_binding_handle *h)
413 {
414 return true;
415 }
416
417 static void rpcint_bh_do_ndr_print(struct dcerpc_binding_handle *h,
418 int ndr_flags,
419 const void *_struct_ptr,
420 const struct ndr_interface_call *call)
421 {
422 void *struct_ptr = discard_const(_struct_ptr);
423
424 if (DEBUGLEVEL < 11) {
425 return;
426 }
427
428 if (ndr_flags & NDR_IN) {
429 ndr_print_function_debug(call->ndr_print,
430 call->name,
431 ndr_flags,
432 struct_ptr);
433 }
434 if (ndr_flags & NDR_OUT) {
435 ndr_print_function_debug(call->ndr_print,
436 call->name,
437 ndr_flags,
438 struct_ptr);
439 }
440 }
441
442 static const struct dcerpc_binding_handle_ops rpcint_bh_ops = {
443 .name = "rpcint",
444 .is_connected = rpcint_bh_is_connected,
445 .set_timeout = rpcint_bh_set_timeout,
446 .raw_call_send = rpcint_bh_raw_call_send,
447 .raw_call_recv = rpcint_bh_raw_call_recv,
448 .disconnect_send = rpcint_bh_disconnect_send,
449 .disconnect_recv = rpcint_bh_disconnect_recv,
450
451 .ref_alloc = rpcint_bh_ref_alloc,
452 .do_ndr_print = rpcint_bh_do_ndr_print,
453 };
454
455 static NTSTATUS rpcint_binding_handle_ex(TALLOC_CTX *mem_ctx,
456 const struct ndr_syntax_id *abstract_syntax,
457 const struct ndr_interface_table *ndr_table,
458 const struct tsocket_address *remote_address,
459 const struct auth_serversupplied_info *session_info,
460 struct messaging_context *msg_ctx,
461 struct dcerpc_binding_handle **binding_handle)
462 {
463 struct dcerpc_binding_handle *h;
464 struct rpcint_bh_state *hs;
465
466 if (ndr_table) {
467 abstract_syntax = &ndr_table->syntax_id;
468 }
469
470 h = dcerpc_binding_handle_create(mem_ctx,
471 &rpcint_bh_ops,
472 NULL,
473 ndr_table,
474 &hs,
475 struct rpcint_bh_state,
476 __location__);
477 if (h == NULL) {
478 return NT_STATUS_NO_MEMORY;
479 }
480 hs->p = make_internal_rpc_pipe_p(hs,
481 abstract_syntax,
482 remote_address,
483 session_info,
484 msg_ctx);
485 if (hs->p == NULL) {
486 TALLOC_FREE(h);
487 return NT_STATUS_NO_MEMORY;
488 }
489
490 *binding_handle = h;
491 return NT_STATUS_OK;
492 }
493 /**
494 * @brief Create a new DCERPC Binding Handle which uses a local dispatch function.
495 *
496 * @param[in] mem_ctx The memory context to use.
497 *
498 * @param[in] ndr_table Normally the ndr_table_<name>.
499 *
500 * @param[in] remote_address The info about the connected client.
501 *
502 * @param[in] serversupplied_info The server supplied authentication function.
503 *
504 * @param[in] msg_ctx The messaging context that can be used by the server
505 *
506 * @param[out] binding_handle A pointer to store the connected
507 * dcerpc_binding_handle
508 *
509 * @return NT_STATUS_OK on success, a corresponding NT status if an
510 * error occured.
511 *
512 * @code
513 * struct dcerpc_binding_handle *winreg_binding;
514 * NTSTATUS status;
515 *
516 * status = rpcint_binding_handle(tmp_ctx,
517 * &ndr_table_winreg,
518 * p->remote_address,
519 * p->session_info,
520 * p->msg_ctx
521 * &winreg_binding);
522 * @endcode
523 */
524 NTSTATUS rpcint_binding_handle(TALLOC_CTX *mem_ctx,
525 const struct ndr_interface_table *ndr_table,
526 const struct tsocket_address *remote_address,
527 const struct auth_serversupplied_info *session_info,
528 struct messaging_context *msg_ctx,
529 struct dcerpc_binding_handle **binding_handle)
530 {
531 return rpcint_binding_handle_ex(mem_ctx, NULL, ndr_table, remote_address,
532 session_info, msg_ctx, binding_handle);
533 }
534
535 /**
536 * @internal
537 *
538 * @brief Create a new RPC client context which uses a local transport.
539 *
540 * This creates a local transport. It is a shortcut to directly call the server
541 * functions and avoid marshalling.
542 * NOTE: this function should be used only by rpc_pipe_open_interface()
543 *
544 * @param[in] mem_ctx The memory context to use.
545 *
546 * @param[in] abstract_syntax Normally the syntax_id of the autogenerated
547 * ndr_table_<name>.
548 *
549 * @param[in] serversupplied_info The server supplied authentication function.
550 *
551 * @param[in] remote_address The client address information.
552 *
553 * @param[in] msg_ctx The messaging context to use.
554 *
555 * @param[out] presult A pointer to store the connected rpc client pipe.
556 *
557 * @return NT_STATUS_OK on success, a corresponding NT status if an
558 * error occured.
559 */
560 static NTSTATUS rpc_pipe_open_internal(TALLOC_CTX *mem_ctx,
561 const struct ndr_syntax_id *abstract_syntax,
562 const struct auth_serversupplied_info *serversupplied_info,
563 const struct tsocket_address *remote_address,
564 struct messaging_context *msg_ctx,
565 struct rpc_pipe_client **presult)
566 {
567 struct rpc_pipe_client *result;
568 NTSTATUS status;
569
570 result = talloc_zero(mem_ctx, struct rpc_pipe_client);
571 if (result == NULL) {
572 return NT_STATUS_NO_MEMORY;
573 }
574
575 result->abstract_syntax = *abstract_syntax;
576 result->transfer_syntax = ndr_transfer_syntax;
577
578 if (remote_address == NULL) {
579 struct tsocket_address *local;
580 int rc;
581
582 rc = tsocket_address_inet_from_strings(mem_ctx,
583 "ip",
584 "127.0.0.1",
585 0,
586 &local);
587 if (rc < 0) {
588 TALLOC_FREE(result);
589 return NT_STATUS_NO_MEMORY;
590 }
591
592 remote_address = local;
593 }
594
595 result->max_xmit_frag = -1;
596 result->max_recv_frag = -1;
597
598 status = rpcint_binding_handle_ex(result,
599 abstract_syntax,
600 NULL,
601 remote_address,
602 serversupplied_info,
603 msg_ctx,
604 &result->binding_handle);
605 if (!NT_STATUS_IS_OK(status)) {
606 TALLOC_FREE(result);
607 return status;
608 }
609
610 *presult = result;
611 return NT_STATUS_OK;
612 }
613
614 /****************************************************************************
615 * External pipes functions
616 ***************************************************************************/
617
618
619 struct np_proxy_state *make_external_rpc_pipe_p(TALLOC_CTX *mem_ctx,
620 const char *pipe_name,
621 const struct tsocket_address *local_address,
622 const struct tsocket_address *remote_address,
623 const struct auth_serversupplied_info *session_info)
624 {
625 struct np_proxy_state *result;
626 char *socket_np_dir;
627 const char *socket_dir;
628 struct tevent_context *ev;
629 struct tevent_req *subreq;
630 struct auth_session_info_transport *session_info_t;
631 struct auth_session_info *session_info_npa;
632 struct auth_user_info_dc *user_info_dc;
633 union netr_Validation val;
634 NTSTATUS status;
635 bool ok;
636 int ret;
637 int sys_errno;
638
639 result = talloc(mem_ctx, struct np_proxy_state);
640 if (result == NULL) {
641 DEBUG(0, ("talloc failed\n"));
642 return NULL;
643 }
644
645 result->read_queue = tevent_queue_create(result, "np_read");
646 if (result->read_queue == NULL) {
647 DEBUG(0, ("tevent_queue_create failed\n"));
648 goto fail;
649 }
650
651 result->write_queue = tevent_queue_create(result, "np_write");
652 if (result->write_queue == NULL) {
653 DEBUG(0, ("tevent_queue_create failed\n"));
654 goto fail;
655 }
656
657 ev = s3_tevent_context_init(talloc_tos());
658 if (ev == NULL) {
659 DEBUG(0, ("s3_tevent_context_init failed\n"));
660 goto fail;
661 }
662
663 socket_dir = lp_parm_const_string(
664 GLOBAL_SECTION_SNUM, "external_rpc_pipe", "socket_dir",
665 lp_ncalrpc_dir());
666 if (socket_dir == NULL) {
667 DEBUG(0, ("externan_rpc_pipe:socket_dir not set\n"));
668 goto fail;
669 }
670 socket_np_dir = talloc_asprintf(talloc_tos(), "%s/np", socket_dir);
671 if (socket_np_dir == NULL) {
672 DEBUG(0, ("talloc_asprintf failed\n"));
673 goto fail;
674 }
675
676 session_info_npa = talloc_zero(talloc_tos(), struct auth_session_info);
677 if (session_info_npa == NULL) {
678 DEBUG(0, ("talloc failed\n"));
679 goto fail;
680 }
681
682 /* Send the named_pipe_auth server the user's full token */
683 session_info_npa->security_token = session_info->security_token;
684 session_info_npa->session_key = session_info->session_key;
685
686 val.sam3 = session_info->info3;
687
688 /* Convert into something we can build a struct
689 * auth_session_info from. Most of the work here
690 * will be to convert the SIDS, which we will then ignore, but
691 * this is the easier way to handle it */
692 status = make_user_info_dc_netlogon_validation(talloc_tos(), "", 3, &val, &user_info_dc);
693 if (!NT_STATUS_IS_OK(status)) {
694 DEBUG(0, ("conversion of info3 into user_info_dc failed!\n"));
695 goto fail;
696 }
697
698 session_info_npa->info = talloc_move(session_info_npa, &user_info_dc->info);
699 talloc_free(user_info_dc);
700
701 session_info_t = talloc_zero(talloc_tos(), struct auth_session_info_transport);
702 if (session_info_npa == NULL) {
703 DEBUG(0, ("talloc failed\n"));
704 goto fail;
705 }
706
707 session_info_t->session_info = talloc_steal(session_info_t, session_info_npa);
708
709 become_root();
710 subreq = tstream_npa_connect_send(talloc_tos(), ev,
711 socket_np_dir,
712 pipe_name,
713 remote_address, /* client_addr */
714 NULL, /* client_name */
715 local_address, /* server_addr */
716 NULL, /* server_name */
717 session_info_t);
718 if (subreq == NULL) {
719 unbecome_root();
720 DEBUG(0, ("tstream_npa_connect_send to %s for pipe %s and "
721 "user %s\\%s failed\n",
722 socket_np_dir, pipe_name, session_info_t->session_info->info->domain_name,
723 session_info_t->session_info->info->account_name));
724 goto fail;
725 }
726 ok = tevent_req_poll(subreq, ev);
727 unbecome_root();
728 if (!ok) {
729 DEBUG(0, ("tevent_req_poll to %s for pipe %s and user %s\\%s "
730 "failed for tstream_npa_connect: %s\n",
731 socket_np_dir, pipe_name, session_info_t->session_info->info->domain_name,
732 session_info_t->session_info->info->account_name,
733 strerror(errno)));
734 goto fail;
735
736 }
737 ret = tstream_npa_connect_recv(subreq, &sys_errno,
738 result,
739 &result->npipe,
740 &result->file_type,
741 &result->device_state,
742 &result->allocation_size);
743 TALLOC_FREE(subreq);
744 if (ret != 0) {
745 DEBUG(0, ("tstream_npa_connect_recv to %s for pipe %s and "
746 "user %s\\%s failed: %s\n",
747 socket_np_dir, pipe_name, session_info_t->session_info->info->domain_name,
748 session_info_t->session_info->info->account_name,
749 strerror(sys_errno)));
750 goto fail;
751 }
752
753 return result;
754
755 fail:
756 TALLOC_FREE(result);
757 return NULL;
758 }
759
760 static NTSTATUS rpc_pipe_open_external(TALLOC_CTX *mem_ctx,
761 const char *pipe_name,
762 const struct ndr_syntax_id *abstract_syntax,
763 const struct auth_serversupplied_info *session_info,
764 struct rpc_pipe_client **_result)
765 {
766 struct tsocket_address *local, *remote;
767 struct rpc_pipe_client *result = NULL;
768 struct np_proxy_state *proxy_state = NULL;
769 struct pipe_auth_data *auth;
770 NTSTATUS status;
771 int ret;
772
773 /* this is an internal connection, fake up ip addresses */
774 ret = tsocket_address_inet_from_strings(talloc_tos(), "ip",
775 NULL, 0, &local);
776 if (ret) {
777 return NT_STATUS_NO_MEMORY;
778 }
779 ret = tsocket_address_inet_from_strings(talloc_tos(), "ip",
780 NULL, 0, &remote);
781 if (ret) {
782 return NT_STATUS_NO_MEMORY;
783 }
784
785 proxy_state = make_external_rpc_pipe_p(mem_ctx, pipe_name,
786 local, remote, session_info);
787 if (!proxy_state) {
788 return NT_STATUS_UNSUCCESSFUL;
789 }
790
791 result = talloc_zero(mem_ctx, struct rpc_pipe_client);
792 if (result == NULL) {
793 status = NT_STATUS_NO_MEMORY;
794 goto done;
795 }
796
797 result->abstract_syntax = *abstract_syntax;
798 result->transfer_syntax = ndr_transfer_syntax;
799
800 result->desthost = get_myname(result);
801 result->srv_name_slash = talloc_asprintf_strupper_m(
802 result, "\\\\%s", result->desthost);
803 if ((result->desthost == NULL) || (result->srv_name_slash == NULL)) {
804 status = NT_STATUS_NO_MEMORY;
805 goto done;
806 }
807
808 result->max_xmit_frag = RPC_MAX_PDU_FRAG_LEN;
809 result->max_recv_frag = RPC_MAX_PDU_FRAG_LEN;
810
811 status = rpc_transport_tstream_init(result,
812 &proxy_state->npipe,
813 &result->transport);
814 if (!NT_STATUS_IS_OK(status)) {
815 goto done;
816 }
817
818 result->binding_handle = rpccli_bh_create(result);
819 if (result->binding_handle == NULL) {
820 status = NT_STATUS_NO_MEMORY;
821 DEBUG(0, ("Failed to create binding handle.\n"));
822 goto done;
823 }
824
825 result->auth = talloc_zero(result, struct pipe_auth_data);
826 if (!result->auth) {
827 status = NT_STATUS_NO_MEMORY;
828 goto done;
829 }
830 result->auth->auth_type = DCERPC_AUTH_TYPE_NONE;
831 result->auth->auth_level = DCERPC_AUTH_LEVEL_NONE;
832
833 status = rpccli_anon_bind_data(result, &auth);
834 if (!NT_STATUS_IS_OK(status)) {
835 DEBUG(0, ("Failed to initialize anonymous bind.\n"));
836 goto done;
837 }
838
839 status = rpc_pipe_bind(result, auth);
840 if (!NT_STATUS_IS_OK(status)) {
841 DEBUG(0, ("Failed to bind external pipe.\n"));
842 goto done;
843 }
844
845 done:
846 if (!NT_STATUS_IS_OK(status)) {
847 TALLOC_FREE(result);
848 }
849 TALLOC_FREE(proxy_state);
850 *_result = result;
851 return status;
852 }
853
854 /**
855 * @brief Create a new RPC client context which uses a local dispatch function
856 * or a remote transport, depending on rpc_server configuration for the
857 * specific service.
858 *
859 * @param[in] mem_ctx The memory context to use.
860 *
861 * @param[in] abstract_syntax Normally the syntax_id of the autogenerated
862 * ndr_table_<name>.
863 *
864 * @param[in] serversupplied_info The server supplied authentication function.
865 *
866 * @param[in] remote_address The client address information.
867 *
868 * @param[in] msg_ctx The messaging context to use.
869 *
870 * @param[out] presult A pointer to store the connected rpc client pipe.
871 *
872 * @return NT_STATUS_OK on success, a corresponding NT status if an
873 * error occured.
874 *
875 * @code
876 * struct rpc_pipe_client *winreg_pipe;
877 * NTSTATUS status;
878 *
879 * status = rpc_pipe_open_interface(tmp_ctx,
880 * &ndr_table_winreg.syntax_id,
881 * p->session_info,
882 * remote_address,
883 * &winreg_pipe);
884 * @endcode
885 */
886
887 NTSTATUS rpc_pipe_open_interface(TALLOC_CTX *mem_ctx,
888 const struct ndr_syntax_id *syntax,
889 const struct auth_serversupplied_info *session_info,
890 const struct tsocket_address *remote_address,
891 struct messaging_context *msg_ctx,
892 struct rpc_pipe_client **cli_pipe)
893 {
894 struct rpc_pipe_client *cli = NULL;
895 const char *server_type;
896 const char *pipe_name;
897 NTSTATUS status;
898 TALLOC_CTX *tmp_ctx;
899
900 if (cli_pipe && rpccli_is_connected(*cli_pipe)) {
901 return NT_STATUS_OK;
902 } else {
903 TALLOC_FREE(*cli_pipe);
904 }
905
906 tmp_ctx = talloc_stackframe();
907 if (tmp_ctx == NULL) {
908 return NT_STATUS_NO_MEMORY;
909 }
910
911 pipe_name = get_pipe_name_from_syntax(tmp_ctx, syntax);
912 if (pipe_name == NULL) {
913 status = NT_STATUS_INVALID_PARAMETER;
914 goto done;
915 }
916
917 while (pipe_name[0] == '\\') {
918 pipe_name++;
919 }
920
921 DEBUG(5, ("Connecting to %s pipe.\n", pipe_name));
922
923 server_type = lp_parm_const_string(GLOBAL_SECTION_SNUM,
924 "rpc_server", pipe_name,
925 "embedded");
926
927 if (strcasecmp_m(server_type, "embedded") == 0) {
928 status = rpc_pipe_open_internal(tmp_ctx,
929 syntax, session_info,
930 remote_address, msg_ctx,
931 &cli);
932 if (!NT_STATUS_IS_OK(status)) {
933 goto done;
934 }
935 } else if (strcasecmp_m(server_type, "daemon") == 0 ||
936 strcasecmp_m(server_type, "external") == 0) {
937 /* It would be nice to just use rpc_pipe_open_ncalrpc() but
938 * for now we need to use the special proxy setup to connect
939 * to spoolssd. */
940
941 status = rpc_pipe_open_external(tmp_ctx,
942 pipe_name, syntax,
943 session_info,
944 &cli);
945 if (!NT_STATUS_IS_OK(status)) {
946 goto done;
947 }
948 } else {
949 status = NT_STATUS_NOT_IMPLEMENTED;
950 DEBUG(0, ("Wrong servertype specified in config file: %s",
951 nt_errstr(status)));
952 goto done;
953 }
954
955 status = NT_STATUS_OK;
956 done:
957 if (NT_STATUS_IS_OK(status)) {
958 *cli_pipe = talloc_move(mem_ctx, &cli);
959 }
960 TALLOC_FREE(tmp_ctx);
961 return status;
962 }
reg import