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s3-rpc_client: move rpc_cli_transport structs and protos to rpc_transport.h
[Samba/gbeck.git] / source3 / rpc_server / rpc_ncacn_np.c
blob855eece538fba6435536c12a5b27946742f259a7
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
35 #undef DBGC_CLASS
36 #define DBGC_CLASS DBGC_RPC_SRV
37
38 static int pipes_open;
39
40 static struct pipes_struct *InternalPipes;
41
42 /* TODO
43 * the following prototypes are declared here to avoid
44 * code being moved about too much for a patch to be
45 * disrupted / less obvious.
46 *
47 * these functions, and associated functions that they
48 * call, should be moved behind a .so module-loading
49 * system _anyway_. so that's the next step...
50 */
51
52 /****************************************************************************
53 Internal Pipe iterator functions.
54 ****************************************************************************/
55
56 struct pipes_struct *get_first_internal_pipe(void)
57 {
58 return InternalPipes;
59 }
60
61 struct pipes_struct *get_next_internal_pipe(struct pipes_struct *p)
62 {
63 return p->next;
64 }
65
66 static void free_pipe_rpc_context_internal( PIPE_RPC_FNS *list )
67 {
68 PIPE_RPC_FNS *tmp = list;
69 PIPE_RPC_FNS *tmp2;
70
71 while (tmp) {
72 tmp2 = tmp->next;
73 SAFE_FREE(tmp);
74 tmp = tmp2;
75 }
76
77 return;
78 }
79
80 bool check_open_pipes(void)
81 {
82 struct pipes_struct *p;
83
84 for (p = InternalPipes; p != NULL; p = p->next) {
85 if (num_pipe_handles(p) != 0) {
86 return true;
87 }
88 }
89 return false;
90 }
91
92 /****************************************************************************
93 Close an rpc pipe.
94 ****************************************************************************/
95
96 int close_internal_rpc_pipe_hnd(struct pipes_struct *p)
97 {
98 if (!p) {
99 DEBUG(0,("Invalid pipe in close_internal_rpc_pipe_hnd\n"));
100 return False;
101 }
102
103 TALLOC_FREE(p->auth.auth_ctx);
104
105 free_pipe_rpc_context_internal( p->contexts );
106
107 /* Free the handles database. */
108 close_policy_by_pipe(p);
109
110 DLIST_REMOVE(InternalPipes, p);
111
112 ZERO_STRUCTP(p);
113
114 return 0;
115 }
116
117 /****************************************************************************
118 Make an internal namedpipes structure
119 ****************************************************************************/
120
121 struct pipes_struct *make_internal_rpc_pipe_p(TALLOC_CTX *mem_ctx,
122 const struct ndr_syntax_id *syntax,
123 struct client_address *client_id,
124 const struct auth_serversupplied_info *session_info,
125 struct messaging_context *msg_ctx)
126 {
127 struct pipes_struct *p;
128
129 DEBUG(4,("Create pipe requested %s\n",
130 get_pipe_name_from_syntax(talloc_tos(), syntax)));
131
132 p = TALLOC_ZERO_P(mem_ctx, struct pipes_struct);
133
134 if (!p) {
135 DEBUG(0,("ERROR! no memory for pipes_struct!\n"));
136 return NULL;
137 }
138
139 p->mem_ctx = talloc_named(p, 0, "pipe %s %p",
140 get_pipe_name_from_syntax(talloc_tos(),
141 syntax), p);
142 if (p->mem_ctx == NULL) {
143 DEBUG(0,("open_rpc_pipe_p: talloc_init failed.\n"));
144 TALLOC_FREE(p);
145 return NULL;
146 }
147
148 if (!init_pipe_handles(p, syntax)) {
149 DEBUG(0,("open_rpc_pipe_p: init_pipe_handles failed.\n"));
150 TALLOC_FREE(p);
151 return NULL;
152 }
153
154 p->session_info = copy_serverinfo(p, session_info);
155 if (p->session_info == NULL) {
156 DEBUG(0, ("open_rpc_pipe_p: copy_serverinfo failed\n"));
157 close_policy_by_pipe(p);
158 TALLOC_FREE(p);
159 return NULL;
160 }
161
162 p->msg_ctx = msg_ctx;
163
164 DLIST_ADD(InternalPipes, p);
165
166 p->client_id = client_id;
167
168 p->endian = RPC_LITTLE_ENDIAN;
169
170 p->syntax = *syntax;
171 p->transport = NCALRPC;
172
173 DEBUG(4,("Created internal pipe %s (pipes_open=%d)\n",
174 get_pipe_name_from_syntax(talloc_tos(), syntax), pipes_open));
175
176 talloc_set_destructor(p, close_internal_rpc_pipe_hnd);
177
178 return p;
179 }
180
181 static NTSTATUS rpcint_dispatch(struct pipes_struct *p,
182 TALLOC_CTX *mem_ctx,
183 uint32_t opnum,
184 const DATA_BLOB *in_data,
185 DATA_BLOB *out_data)
186 {
187 uint32_t num_cmds = rpc_srv_get_pipe_num_cmds(&p->syntax);
188 const struct api_struct *cmds = rpc_srv_get_pipe_cmds(&p->syntax);
189 uint32_t i;
190 bool ok;
191
192 /* set opnum */
193 p->opnum = opnum;
194
195 for (i = 0; i < num_cmds; i++) {
196 if (cmds[i].opnum == opnum && cmds[i].fn != NULL) {
197 break;
198 }
199 }
200
201 if (i == num_cmds) {
202 return NT_STATUS_RPC_PROCNUM_OUT_OF_RANGE;
203 }
204
205 p->in_data.data = *in_data;
206 p->out_data.rdata = data_blob_null;
207
208 ok = cmds[i].fn(p);
209 p->in_data.data = data_blob_null;
210 if (!ok) {
211 data_blob_free(&p->out_data.rdata);
212 talloc_free_children(p->mem_ctx);
213 return NT_STATUS_RPC_CALL_FAILED;
214 }
215
216 if (p->fault_state) {
217 p->fault_state = false;
218 data_blob_free(&p->out_data.rdata);
219 talloc_free_children(p->mem_ctx);
220 return NT_STATUS_RPC_CALL_FAILED;
221 }
222
223 if (p->bad_handle_fault_state) {
224 p->bad_handle_fault_state = false;
225 data_blob_free(&p->out_data.rdata);
226 talloc_free_children(p->mem_ctx);
227 return NT_STATUS_RPC_SS_CONTEXT_MISMATCH;
228 }
229
230 if (p->rng_fault_state) {
231 p->rng_fault_state = false;
232 data_blob_free(&p->out_data.rdata);
233 talloc_free_children(p->mem_ctx);
234 return NT_STATUS_RPC_PROCNUM_OUT_OF_RANGE;
235 }
236
237 *out_data = p->out_data.rdata;
238 talloc_steal(mem_ctx, out_data->data);
239 p->out_data.rdata = data_blob_null;
240
241 talloc_free_children(p->mem_ctx);
242 return NT_STATUS_OK;
243 }
244
245 struct rpcint_bh_state {
246 struct pipes_struct *p;
247 };
248
249 static bool rpcint_bh_is_connected(struct dcerpc_binding_handle *h)
250 {
251 struct rpcint_bh_state *hs = dcerpc_binding_handle_data(h,
252 struct rpcint_bh_state);
253
254 if (!hs->p) {
255 return false;
256 }
257
258 return true;
259 }
260
261 static uint32_t rpcint_bh_set_timeout(struct dcerpc_binding_handle *h,
262 uint32_t timeout)
263 {
264 /* TODO: implement timeouts */
265 return UINT32_MAX;
266 }
267
268 struct rpcint_bh_raw_call_state {
269 DATA_BLOB in_data;
270 DATA_BLOB out_data;
271 uint32_t out_flags;
272 };
273
274 static struct tevent_req *rpcint_bh_raw_call_send(TALLOC_CTX *mem_ctx,
275 struct tevent_context *ev,
276 struct dcerpc_binding_handle *h,
277 const struct GUID *object,
278 uint32_t opnum,
279 uint32_t in_flags,
280 const uint8_t *in_data,
281 size_t in_length)
282 {
283 struct rpcint_bh_state *hs =
284 dcerpc_binding_handle_data(h,
285 struct rpcint_bh_state);
286 struct tevent_req *req;
287 struct rpcint_bh_raw_call_state *state;
288 bool ok;
289 NTSTATUS status;
290
291 req = tevent_req_create(mem_ctx, &state,
292 struct rpcint_bh_raw_call_state);
293 if (req == NULL) {
294 return NULL;
295 }
296 state->in_data.data = discard_const_p(uint8_t, in_data);
297 state->in_data.length = in_length;
298
299 ok = rpcint_bh_is_connected(h);
300 if (!ok) {
301 tevent_req_nterror(req, NT_STATUS_INVALID_CONNECTION);
302 return tevent_req_post(req, ev);
303 }
304
305 /* TODO: allow async */
306 status = rpcint_dispatch(hs->p, state, opnum,
307 &state->in_data,
308 &state->out_data);
309 if (!NT_STATUS_IS_OK(status)) {
310 tevent_req_nterror(req, status);
311 return tevent_req_post(req, ev);
312 }
313
314 tevent_req_done(req);
315 return tevent_req_post(req, ev);
316 }
317
318 static NTSTATUS rpcint_bh_raw_call_recv(struct tevent_req *req,
319 TALLOC_CTX *mem_ctx,
320 uint8_t **out_data,
321 size_t *out_length,
322 uint32_t *out_flags)
323 {
324 struct rpcint_bh_raw_call_state *state =
325 tevent_req_data(req,
326 struct rpcint_bh_raw_call_state);
327 NTSTATUS status;
328
329 if (tevent_req_is_nterror(req, &status)) {
330 tevent_req_received(req);
331 return status;
332 }
333
334 *out_data = talloc_move(mem_ctx, &state->out_data.data);
335 *out_length = state->out_data.length;
336 *out_flags = 0;
337 tevent_req_received(req);
338 return NT_STATUS_OK;
339 }
340
341 struct rpcint_bh_disconnect_state {
342 uint8_t _dummy;
343 };
344
345 static struct tevent_req *rpcint_bh_disconnect_send(TALLOC_CTX *mem_ctx,
346 struct tevent_context *ev,
347 struct dcerpc_binding_handle *h)
348 {
349 struct rpcint_bh_state *hs = dcerpc_binding_handle_data(h,
350 struct rpcint_bh_state);
351 struct tevent_req *req;
352 struct rpcint_bh_disconnect_state *state;
353 bool ok;
354
355 req = tevent_req_create(mem_ctx, &state,
356 struct rpcint_bh_disconnect_state);
357 if (req == NULL) {
358 return NULL;
359 }
360
361 ok = rpcint_bh_is_connected(h);
362 if (!ok) {
363 tevent_req_nterror(req, NT_STATUS_INVALID_CONNECTION);
364 return tevent_req_post(req, ev);
365 }
366
367 /*
368 * TODO: do a real async disconnect ...
369 *
370 * For now the caller needs to free pipes_struct
371 */
372 hs->p = NULL;
373
374 tevent_req_done(req);
375 return tevent_req_post(req, ev);
376 }
377
378 static NTSTATUS rpcint_bh_disconnect_recv(struct tevent_req *req)
379 {
380 NTSTATUS status;
381
382 if (tevent_req_is_nterror(req, &status)) {
383 tevent_req_received(req);
384 return status;
385 }
386
387 tevent_req_received(req);
388 return NT_STATUS_OK;
389 }
390
391 static bool rpcint_bh_ref_alloc(struct dcerpc_binding_handle *h)
392 {
393 return true;
394 }
395
396 static void rpcint_bh_do_ndr_print(struct dcerpc_binding_handle *h,
397 int ndr_flags,
398 const void *_struct_ptr,
399 const struct ndr_interface_call *call)
400 {
401 void *struct_ptr = discard_const(_struct_ptr);
402
403 if (DEBUGLEVEL < 11) {
404 return;
405 }
406
407 if (ndr_flags & NDR_IN) {
408 ndr_print_function_debug(call->ndr_print,
409 call->name,
410 ndr_flags,
411 struct_ptr);
412 }
413 if (ndr_flags & NDR_OUT) {
414 ndr_print_function_debug(call->ndr_print,
415 call->name,
416 ndr_flags,
417 struct_ptr);
418 }
419 }
420
421 static const struct dcerpc_binding_handle_ops rpcint_bh_ops = {
422 .name = "rpcint",
423 .is_connected = rpcint_bh_is_connected,
424 .set_timeout = rpcint_bh_set_timeout,
425 .raw_call_send = rpcint_bh_raw_call_send,
426 .raw_call_recv = rpcint_bh_raw_call_recv,
427 .disconnect_send = rpcint_bh_disconnect_send,
428 .disconnect_recv = rpcint_bh_disconnect_recv,
429
430 .ref_alloc = rpcint_bh_ref_alloc,
431 .do_ndr_print = rpcint_bh_do_ndr_print,
432 };
433
434 static NTSTATUS rpcint_binding_handle_ex(TALLOC_CTX *mem_ctx,
435 const struct ndr_syntax_id *abstract_syntax,
436 const struct ndr_interface_table *ndr_table,
437 struct client_address *client_id,
438 const struct auth_serversupplied_info *session_info,
439 struct messaging_context *msg_ctx,
440 struct dcerpc_binding_handle **binding_handle)
441 {
442 struct dcerpc_binding_handle *h;
443 struct rpcint_bh_state *hs;
444
445 if (ndr_table) {
446 abstract_syntax = &ndr_table->syntax_id;
447 }
448
449 h = dcerpc_binding_handle_create(mem_ctx,
450 &rpcint_bh_ops,
451 NULL,
452 ndr_table,
453 &hs,
454 struct rpcint_bh_state,
455 __location__);
456 if (h == NULL) {
457 return NT_STATUS_NO_MEMORY;
458 }
459 hs->p = make_internal_rpc_pipe_p(hs,
460 abstract_syntax,
461 client_id,
462 session_info,
463 msg_ctx);
464 if (hs->p == NULL) {
465 TALLOC_FREE(h);
466 return NT_STATUS_NO_MEMORY;
467 }
468
469 *binding_handle = h;
470 return NT_STATUS_OK;
471 }
472 /**
473 * @brief Create a new DCERPC Binding Handle which uses a local dispatch function.
474 *
475 * @param[in] mem_ctx The memory context to use.
476 *
477 * @param[in] ndr_table Normally the ndr_table_<name>.
478 *
479 * @param[in] client_id The info about the connected client.
480 *
481 * @param[in] serversupplied_info The server supplied authentication function.
482 *
483 * @param[in] msg_ctx The messaging context that can be used by the server
484 *
485 * @param[out] binding_handle A pointer to store the connected
486 * dcerpc_binding_handle
487 *
488 * @return NT_STATUS_OK on success, a corresponding NT status if an
489 * error occured.
490 *
491 * @code
492 * struct dcerpc_binding_handle *winreg_binding;
493 * NTSTATUS status;
494 *
495 * status = rpcint_binding_handle(tmp_ctx,
496 * &ndr_table_winreg,
497 * p->client_id,
498 * p->session_info,
499 * p->msg_ctx
500 * &winreg_binding);
501 * @endcode
502 */
503 NTSTATUS rpcint_binding_handle(TALLOC_CTX *mem_ctx,
504 const struct ndr_interface_table *ndr_table,
505 struct client_address *client_id,
506 const struct auth_serversupplied_info *session_info,
507 struct messaging_context *msg_ctx,
508 struct dcerpc_binding_handle **binding_handle)
509 {
510 return rpcint_binding_handle_ex(mem_ctx, NULL, ndr_table, client_id,
511 session_info, msg_ctx, binding_handle);
512 }
513
514 /**
515 * @internal
516 *
517 * @brief Create a new RPC client context which uses a local transport.
518 *
519 * This creates a local transport. It is a shortcut to directly call the server
520 * functions and avoid marschalling.
521 *
522 * @param[in] mem_ctx The memory context to use.
523 *
524 * @param[in] abstract_syntax Normally the syntax_id of the autogenerated
525 * ndr_table_<name>.
526 *
527 * @param[in] serversupplied_info The server supplied authentication function.
528 *
529 * @param[in] client_id The client address information.
530 *
531 * @param[in] msg_ctx The messaging context to use.
532 *
533 * @param[out] presult A pointer to store the connected rpc client pipe.
534 *
535 * @return NT_STATUS_OK on success, a corresponding NT status if an
536 * error occured.
537 *
538 * @code
539 * struct rpc_pipe_client *winreg_pipe;
540 * NTSTATUS status;
541 *
542 * status = rpc_pipe_open_internal(tmp_ctx,
543 * &ndr_table_winreg.syntax_id,
544 * p->session_info,
545 * client_id,
546 * &winreg_pipe);
547 * @endcode
548 */
549 NTSTATUS rpc_pipe_open_internal(TALLOC_CTX *mem_ctx,
550 const struct ndr_syntax_id *abstract_syntax,
551 const struct auth_serversupplied_info *serversupplied_info,
552 struct client_address *client_id,
553 struct messaging_context *msg_ctx,
554 struct rpc_pipe_client **presult)
555 {
556 struct rpc_pipe_client *result;
557 NTSTATUS status;
558
559 result = TALLOC_ZERO_P(mem_ctx, struct rpc_pipe_client);
560 if (result == NULL) {
561 return NT_STATUS_NO_MEMORY;
562 }
563
564 result->abstract_syntax = *abstract_syntax;
565 result->transfer_syntax = ndr_transfer_syntax;
566
567 if (client_id == NULL) {
568 static struct client_address unknown;
569 strlcpy(unknown.addr, "<UNKNOWN>", sizeof(unknown.addr));
570 unknown.name = "<UNKNOWN>";
571 client_id = &unknown;
572 }
573
574 result->max_xmit_frag = -1;
575 result->max_recv_frag = -1;
576
577 status = rpcint_binding_handle_ex(result,
578 abstract_syntax,
579 NULL,
580 client_id,
581 serversupplied_info,
582 msg_ctx,
583 &result->binding_handle);
584 if (!NT_STATUS_IS_OK(status)) {
585 TALLOC_FREE(result);
586 return status;
587 }
588
589 *presult = result;
590 return NT_STATUS_OK;
591 }
592
593 /****************************************************************************
594 * External pipes functions
595 ***************************************************************************/
596
597
598 struct np_proxy_state *make_external_rpc_pipe_p(TALLOC_CTX *mem_ctx,
599 const char *pipe_name,
600 const struct tsocket_address *local_address,
601 const struct tsocket_address *remote_address,
602 const struct auth_serversupplied_info *session_info)
603 {
604 struct np_proxy_state *result;
605 char *socket_np_dir;
606 const char *socket_dir;
607 struct tevent_context *ev;
608 struct tevent_req *subreq;
609 struct auth_session_info_transport *session_info_t;
610 struct auth_user_info_dc *user_info_dc;
611 union netr_Validation val;
612 NTSTATUS status;
613 bool ok;
614 int ret;
615 int sys_errno;
616
617 result = talloc(mem_ctx, struct np_proxy_state);
618 if (result == NULL) {
619 DEBUG(0, ("talloc failed\n"));
620 return NULL;
621 }
622
623 result->read_queue = tevent_queue_create(result, "np_read");
624 if (result->read_queue == NULL) {
625 DEBUG(0, ("tevent_queue_create failed\n"));
626 goto fail;
627 }
628
629 result->write_queue = tevent_queue_create(result, "np_write");
630 if (result->write_queue == NULL) {
631 DEBUG(0, ("tevent_queue_create failed\n"));
632 goto fail;
633 }
634
635 ev = s3_tevent_context_init(talloc_tos());
636 if (ev == NULL) {
637 DEBUG(0, ("s3_tevent_context_init failed\n"));
638 goto fail;
639 }
640
641 socket_dir = lp_parm_const_string(
642 GLOBAL_SECTION_SNUM, "external_rpc_pipe", "socket_dir",
643 lp_ncalrpc_dir());
644 if (socket_dir == NULL) {
645 DEBUG(0, ("externan_rpc_pipe:socket_dir not set\n"));
646 goto fail;
647 }
648 socket_np_dir = talloc_asprintf(talloc_tos(), "%s/np", socket_dir);
649 if (socket_np_dir == NULL) {
650 DEBUG(0, ("talloc_asprintf failed\n"));
651 goto fail;
652 }
653
654 session_info_t = talloc_zero(talloc_tos(), struct auth_session_info_transport);
655 if (session_info_t == NULL) {
656 DEBUG(0, ("talloc failed\n"));
657 goto fail;
658 }
659
660 /* Send the named_pipe_auth server the user's full token */
661 session_info_t->security_token = session_info->security_token;
662 session_info_t->session_key = session_info->user_session_key;
663
664 val.sam3 = session_info->info3;
665
666 /* Convert into something we can build a struct
667 * auth_session_info_transport from. Most of the work here
668 * will be to convert the SIDS, which we will then ignore, but
669 * this is the easier way to handle it */
670 status = make_user_info_dc_netlogon_validation(talloc_tos(), "", 3, &val, &user_info_dc);
671 if (!NT_STATUS_IS_OK(status)) {
672 DEBUG(0, ("conversion of info3 into user_info_dc failed!\n"));
673 goto fail;
674 }
675
676 session_info_t->info = talloc_move(session_info_t, &user_info_dc->info);
677 talloc_free(user_info_dc);
678
679 become_root();
680 subreq = tstream_npa_connect_send(talloc_tos(), ev,
681 socket_np_dir,
682 pipe_name,
683 remote_address, /* client_addr */
684 NULL, /* client_name */
685 local_address, /* server_addr */
686 NULL, /* server_name */
687 session_info_t);
688 if (subreq == NULL) {
689 unbecome_root();
690 DEBUG(0, ("tstream_npa_connect_send to %s for pipe %s and "
691 "user %s\\%s failed\n",
692 socket_np_dir, pipe_name, session_info_t->info->domain_name,
693 session_info_t->info->account_name));
694 goto fail;
695 }
696 ok = tevent_req_poll(subreq, ev);
697 unbecome_root();
698 if (!ok) {
699 DEBUG(0, ("tevent_req_poll to %s for pipe %s and user %s\\%s "
700 "failed for tstream_npa_connect: %s\n",
701 socket_np_dir, pipe_name, session_info_t->info->domain_name,
702 session_info_t->info->account_name,
703 strerror(errno)));
704 goto fail;
705
706 }
707 ret = tstream_npa_connect_recv(subreq, &sys_errno,
708 result,
709 &result->npipe,
710 &result->file_type,
711 &result->device_state,
712 &result->allocation_size);
713 TALLOC_FREE(subreq);
714 if (ret != 0) {
715 DEBUG(0, ("tstream_npa_connect_recv to %s for pipe %s and "
716 "user %s\\%s failed: %s\n",
717 socket_np_dir, pipe_name, session_info_t->info->domain_name,
718 session_info_t->info->account_name,
719 strerror(sys_errno)));
720 goto fail;
721 }
722
723 return result;
724
725 fail:
726 TALLOC_FREE(result);
727 return NULL;
728 }
729
730 static NTSTATUS rpc_pipe_open_external(TALLOC_CTX *mem_ctx,
731 const char *pipe_name,
732 const struct ndr_syntax_id *abstract_syntax,
733 const struct auth_serversupplied_info *session_info,
734 struct rpc_pipe_client **_result)
735 {
736 struct tsocket_address *local, *remote;
737 struct rpc_pipe_client *result = NULL;
738 struct np_proxy_state *proxy_state = NULL;
739 struct pipe_auth_data *auth;
740 NTSTATUS status;
741 int ret;
742
743 /* this is an internal connection, fake up ip addresses */
744 ret = tsocket_address_inet_from_strings(talloc_tos(), "ip",
745 NULL, 0, &local);
746 if (ret) {
747 return NT_STATUS_NO_MEMORY;
748 }
749 ret = tsocket_address_inet_from_strings(talloc_tos(), "ip",
750 NULL, 0, &remote);
751 if (ret) {
752 return NT_STATUS_NO_MEMORY;
753 }
754
755 proxy_state = make_external_rpc_pipe_p(mem_ctx, pipe_name,
756 local, remote, session_info);
757 if (!proxy_state) {
758 return NT_STATUS_UNSUCCESSFUL;
759 }
760
761 result = talloc_zero(mem_ctx, struct rpc_pipe_client);
762 if (result == NULL) {
763 status = NT_STATUS_NO_MEMORY;
764 goto done;
765 }
766
767 result->abstract_syntax = *abstract_syntax;
768 result->transfer_syntax = ndr_transfer_syntax;
769
770 result->desthost = get_myname(result);
771 result->srv_name_slash = talloc_asprintf_strupper_m(
772 result, "\\\\%s", result->desthost);
773 if ((result->desthost == NULL) || (result->srv_name_slash == NULL)) {
774 status = NT_STATUS_NO_MEMORY;
775 goto done;
776 }
777
778 result->max_xmit_frag = RPC_MAX_PDU_FRAG_LEN;
779 result->max_recv_frag = RPC_MAX_PDU_FRAG_LEN;
780
781 status = rpc_transport_tstream_init(result,
782 &proxy_state->npipe,
783 &result->transport);
784 if (!NT_STATUS_IS_OK(status)) {
785 goto done;
786 }
787
788 result->binding_handle = rpccli_bh_create(result);
789 if (result->binding_handle == NULL) {
790 status = NT_STATUS_NO_MEMORY;
791 DEBUG(0, ("Failed to create binding handle.\n"));
792 goto done;
793 }
794
795 result->auth = talloc_zero(result, struct pipe_auth_data);
796 if (!result->auth) {
797 status = NT_STATUS_NO_MEMORY;
798 goto done;
799 }
800 result->auth->auth_type = DCERPC_AUTH_TYPE_NONE;
801 result->auth->auth_level = DCERPC_AUTH_LEVEL_NONE;
802
803 status = rpccli_anon_bind_data(result, &auth);
804 if (!NT_STATUS_IS_OK(status)) {
805 DEBUG(0, ("Failed to initialize anonymous bind.\n"));
806 goto done;
807 }
808
809 status = rpc_pipe_bind(result, auth);
810 if (!NT_STATUS_IS_OK(status)) {
811 DEBUG(0, ("Failed to bind external pipe.\n"));
812 goto done;
813 }
814
815 done:
816 if (!NT_STATUS_IS_OK(status)) {
817 TALLOC_FREE(result);
818 }
819 TALLOC_FREE(proxy_state);
820 *_result = result;
821 return status;
822 }
823
824 /**
825 * @brief Create a new RPC client context which uses a local dispatch function.
826 *
827 * @param mem_ctx The memory context on which thje pipe will ultimately
828 * be allocated
829 * @param name The pipe name to connect to.
830 * @param session_info Credentials to use for the connection.
831 * @param pipe [in|out] Checks if a pipe is connected, and connects it
832 * if not
833 *
834 * @return NT_STATUS_OK on success, a corresponding NT status if
835 * an error occured.
836 */
837
838 NTSTATUS rpc_pipe_open_interface(TALLOC_CTX *mem_ctx,
839 const struct ndr_syntax_id *syntax,
840 const struct auth_serversupplied_info *session_info,
841 struct client_address *client_id,
842 struct messaging_context *msg_ctx,
843 struct rpc_pipe_client **cli_pipe)
844 {
845 struct rpc_pipe_client *cli = NULL;
846 const char *server_type;
847 const char *pipe_name;
848 NTSTATUS status;
849 TALLOC_CTX *tmp_ctx;
850
851 if (cli_pipe && rpccli_is_connected(*cli_pipe)) {
852 return NT_STATUS_OK;
853 } else {
854 TALLOC_FREE(*cli_pipe);
855 }
856
857 tmp_ctx = talloc_stackframe();
858 if (tmp_ctx == NULL) {
859 return NT_STATUS_NO_MEMORY;
860 }
861
862 pipe_name = get_pipe_name_from_syntax(tmp_ctx, syntax);
863 if (pipe_name == NULL) {
864 status = NT_STATUS_INVALID_PARAMETER;
865 goto done;
866 }
867
868 while (pipe_name[0] == '\\') {
869 pipe_name++;
870 }
871
872 DEBUG(5, ("Connecting to %s pipe.\n", pipe_name));
873
874 server_type = lp_parm_const_string(GLOBAL_SECTION_SNUM,
875 "rpc_server", pipe_name,
876 "embedded");
877
878 if (StrCaseCmp(server_type, "embedded") == 0) {
879 status = rpc_pipe_open_internal(tmp_ctx,
880 syntax, session_info,
881 client_id, msg_ctx,
882 &cli);
883 if (!NT_STATUS_IS_OK(status)) {
884 goto done;
885 }
886 } else if (StrCaseCmp(server_type, "daemon") == 0 ||
887 StrCaseCmp(server_type, "external") == 0) {
888 /* It would be nice to just use rpc_pipe_open_ncalrpc() but
889 * for now we need to use the special proxy setup to connect
890 * to spoolssd. */
891
892 status = rpc_pipe_open_external(tmp_ctx,
893 pipe_name, syntax,
894 session_info,
895 &cli);
896 if (!NT_STATUS_IS_OK(status)) {
897 goto done;
898 }
899 } else {
900 status = NT_STATUS_NOT_IMPLEMENTED;
901 DEBUG(0, ("Wrong servertype specified in config file: %s",
902 nt_errstr(status)));
903 goto done;
904 }
905
906 status = NT_STATUS_OK;
907 done:
908 if (NT_STATUS_IS_OK(status)) {
909 *cli_pipe = talloc_move(mem_ctx, &cli);
910 }
911 TALLOC_FREE(tmp_ctx);
912 return status;
913 }
WIP