2 Unix SMB/CIFS implementation.
4 dcerpc connect functions
6 Copyright (C) Andrew Tridgell 2003
7 Copyright (C) Jelmer Vernooij 2004
8 Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005-2007
9 Copyright (C) Rafal Szczesniak 2005
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 3 of the License, or
14 (at your option) any later version.
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with this program. If not, see <http://www.gnu.org/licenses/>.
27 #include "libcli/composite/composite.h"
28 #include "libcli/smb_composite/smb_composite.h"
29 #include "lib/events/events.h"
30 #include "libcli/smb2/smb2.h"
31 #include "libcli/smb2/smb2_calls.h"
32 #include "librpc/rpc/dcerpc.h"
33 #include "auth/credentials/credentials.h"
36 struct pipe_np_smb_state {
37 struct smb_composite_connect conn;
38 struct smbcli_tree *tree;
39 struct dcerpc_pipe_connect io;
44 Stage 3 of ncacn_np_smb: Named pipe opened (or not)
46 static void continue_pipe_open_smb(struct composite_context *ctx)
48 struct composite_context *c = talloc_get_type(ctx->async.private_data,
49 struct composite_context);
51 /* receive result of named pipe open request on smb */
52 c->status = dcerpc_pipe_open_smb_recv(ctx);
53 if (!composite_is_ok(c)) return;
60 Stage 2 of ncacn_np_smb: Open a named pipe after successful smb connection
62 static void continue_smb_connect(struct composite_context *ctx)
64 struct composite_context *open_ctx;
65 struct composite_context *c = talloc_get_type(ctx->async.private_data,
66 struct composite_context);
67 struct pipe_np_smb_state *s = talloc_get_type(c->private_data,
68 struct pipe_np_smb_state);
70 /* receive result of smb connect request */
71 c->status = smb_composite_connect_recv(ctx, c);
72 if (!composite_is_ok(c)) return;
74 /* prepare named pipe open parameters */
75 s->tree = s->conn.out.tree;
76 s->io.pipe_name = s->io.binding->endpoint;
78 /* send named pipe open request */
79 open_ctx = dcerpc_pipe_open_smb_send(s->io.pipe, s->tree, s->io.pipe_name);
80 if (composite_nomem(open_ctx, c)) return;
82 composite_continue(c, open_ctx, continue_pipe_open_smb, c);
87 Initiate async open of a rpc connection to a rpc pipe on SMB using
88 the binding structure to determine the endpoint and options
90 static struct composite_context *dcerpc_pipe_connect_ncacn_np_smb_send(TALLOC_CTX *mem_ctx,
91 struct dcerpc_pipe_connect *io)
93 struct composite_context *c;
94 struct pipe_np_smb_state *s;
95 struct composite_context *conn_req;
96 struct smb_composite_connect *conn;
98 /* composite context allocation and setup */
99 c = composite_create(mem_ctx, io->pipe->conn->event_ctx);
100 if (c == NULL) return NULL;
102 s = talloc_zero(c, struct pipe_np_smb_state);
103 if (composite_nomem(s, c)) return c;
109 /* prepare smb connection parameters: we're connecting to IPC$ share on
111 conn->in.dest_host = s->io.binding->host;
113 conn->in.called_name = s->io.binding->target_hostname;
114 conn->in.service = "IPC$";
115 conn->in.service_type = NULL;
116 conn->in.workgroup = lp_workgroup();
119 * provide proper credentials - user supplied, but allow a
120 * fallback to anonymous if this is an schannel connection
121 * (might be NT4 not allowing machine logins at session
124 s->conn.in.credentials = s->io.creds;
125 if (s->io.binding->flags & DCERPC_SCHANNEL) {
126 conn->in.fallback_to_anonymous = True;
128 conn->in.fallback_to_anonymous = False;
131 /* send smb connect request */
132 conn_req = smb_composite_connect_send(conn, s->io.pipe->conn, s->io.pipe->conn->event_ctx);
133 if (composite_nomem(conn_req, c)) return c;
135 composite_continue(c, conn_req, continue_smb_connect, c);
141 Receive result of a rpc connection to a rpc pipe on SMB
143 static NTSTATUS dcerpc_pipe_connect_ncacn_np_smb_recv(struct composite_context *c)
145 NTSTATUS status = composite_wait(c);
152 struct pipe_np_smb2_state {
153 struct smb2_tree *tree;
154 struct dcerpc_pipe_connect io;
159 Stage 3 of ncacn_np_smb: Named pipe opened (or not)
161 static void continue_pipe_open_smb2(struct composite_context *ctx)
163 struct composite_context *c = talloc_get_type(ctx->async.private_data,
164 struct composite_context);
166 /* receive result of named pipe open request on smb2 */
167 c->status = dcerpc_pipe_open_smb2_recv(ctx);
168 if (!composite_is_ok(c)) return;
175 Stage 2 of ncacn_np_smb2: Open a named pipe after successful smb2 connection
177 static void continue_smb2_connect(struct composite_context *ctx)
179 struct composite_context *open_req;
180 struct composite_context *c = talloc_get_type(ctx->async.private_data,
181 struct composite_context);
182 struct pipe_np_smb2_state *s = talloc_get_type(c->private_data,
183 struct pipe_np_smb2_state);
185 /* receive result of smb2 connect request */
186 c->status = smb2_connect_recv(ctx, c, &s->tree);
187 if (!composite_is_ok(c)) return;
189 /* prepare named pipe open parameters */
190 s->io.pipe_name = s->io.binding->endpoint;
192 /* send named pipe open request */
193 open_req = dcerpc_pipe_open_smb2_send(s->io.pipe, s->tree, s->io.pipe_name);
194 if (composite_nomem(open_req, c)) return;
196 composite_continue(c, open_req, continue_pipe_open_smb2, c);
201 Initiate async open of a rpc connection request on SMB2 using
202 the binding structure to determine the endpoint and options
204 static struct composite_context *dcerpc_pipe_connect_ncacn_np_smb2_send(TALLOC_CTX *mem_ctx,
205 struct dcerpc_pipe_connect *io)
207 struct composite_context *c;
208 struct pipe_np_smb2_state *s;
209 struct composite_context *conn_req;
211 /* composite context allocation and setup */
212 c = composite_create(mem_ctx, io->pipe->conn->event_ctx);
213 if (c == NULL) return NULL;
215 s = talloc_zero(c, struct pipe_np_smb2_state);
216 if (composite_nomem(s, c)) return c;
222 * provide proper credentials - user supplied or anonymous in case this is
223 * schannel connection
225 if (s->io.binding->flags & DCERPC_SCHANNEL) {
226 s->io.creds = cli_credentials_init(mem_ctx);
227 if (composite_nomem(s->io.creds, c)) return c;
229 cli_credentials_set_anonymous(s->io.creds);
230 cli_credentials_guess(s->io.creds);
233 /* send smb2 connect request */
234 conn_req = smb2_connect_send(mem_ctx, s->io.binding->host, "IPC$", s->io.creds,
236 composite_continue(c, conn_req, continue_smb2_connect, c);
242 Receive result of a rpc connection to a rpc pipe on SMB2
244 static NTSTATUS dcerpc_pipe_connect_ncacn_np_smb2_recv(struct composite_context *c)
246 NTSTATUS status = composite_wait(c);
253 struct pipe_ip_tcp_state {
254 struct dcerpc_pipe_connect io;
256 const char *target_hostname;
262 Stage 2 of ncacn_ip_tcp: rpc pipe opened (or not)
264 static void continue_pipe_open_ncacn_ip_tcp(struct composite_context *ctx)
266 struct composite_context *c = talloc_get_type(ctx->async.private_data,
267 struct composite_context);
269 /* receive result of named pipe open request on tcp/ip */
270 c->status = dcerpc_pipe_open_tcp_recv(ctx);
271 if (!composite_is_ok(c)) return;
278 Initiate async open of a rpc connection to a rpc pipe on TCP/IP using
279 the binding structure to determine the endpoint and options
281 static struct composite_context* dcerpc_pipe_connect_ncacn_ip_tcp_send(TALLOC_CTX *mem_ctx,
282 struct dcerpc_pipe_connect *io)
284 struct composite_context *c;
285 struct pipe_ip_tcp_state *s;
286 struct composite_context *pipe_req;
288 /* composite context allocation and setup */
289 c = composite_create(mem_ctx, io->pipe->conn->event_ctx);
290 if (c == NULL) return NULL;
292 s = talloc_zero(c, struct pipe_ip_tcp_state);
293 if (composite_nomem(s, c)) return c;
296 /* store input parameters in state structure */
298 s->host = talloc_reference(c, io->binding->host);
299 s->target_hostname = talloc_reference(c, io->binding->target_hostname);
300 /* port number is a binding endpoint here */
301 s->port = atoi(io->binding->endpoint);
303 /* send pipe open request on tcp/ip */
304 pipe_req = dcerpc_pipe_open_tcp_send(s->io.pipe->conn, s->host, s->target_hostname,
306 composite_continue(c, pipe_req, continue_pipe_open_ncacn_ip_tcp, c);
312 Receive result of a rpc connection to a rpc pipe on TCP/IP
314 static NTSTATUS dcerpc_pipe_connect_ncacn_ip_tcp_recv(struct composite_context *c)
316 NTSTATUS status = composite_wait(c);
323 struct pipe_unix_state {
324 struct dcerpc_pipe_connect io;
330 Stage 2 of ncacn_unix: rpc pipe opened (or not)
332 static void continue_pipe_open_ncacn_unix_stream(struct composite_context *ctx)
334 struct composite_context *c = talloc_get_type(ctx->async.private_data,
335 struct composite_context);
337 /* receive result of pipe open request on unix socket */
338 c->status = dcerpc_pipe_open_unix_stream_recv(ctx);
339 if (!composite_is_ok(c)) return;
346 Initiate async open of a rpc connection to a rpc pipe on unix socket using
347 the binding structure to determine the endpoint and options
349 static struct composite_context* dcerpc_pipe_connect_ncacn_unix_stream_send(TALLOC_CTX *mem_ctx,
350 struct dcerpc_pipe_connect *io)
352 struct composite_context *c;
353 struct pipe_unix_state *s;
354 struct composite_context *pipe_req;
356 /* composite context allocation and setup */
357 c = composite_create(mem_ctx, io->pipe->conn->event_ctx);
358 if (c == NULL) return NULL;
360 s = talloc_zero(c, struct pipe_unix_state);
361 if (composite_nomem(s, c)) return c;
364 /* prepare pipe open parameters and store them in state structure
365 also, verify whether biding endpoint is not null */
368 if (!io->binding->endpoint) {
369 DEBUG(0, ("Path to unix socket not specified\n"));
370 composite_error(c, NT_STATUS_INVALID_PARAMETER);
374 s->path = talloc_strdup(c, io->binding->endpoint); /* path is a binding endpoint here */
375 if (composite_nomem(s->path, c)) return c;
377 /* send pipe open request on unix socket */
378 pipe_req = dcerpc_pipe_open_unix_stream_send(s->io.pipe->conn, s->path);
379 composite_continue(c, pipe_req, continue_pipe_open_ncacn_unix_stream, c);
385 Receive result of a rpc connection to a pipe on unix socket
387 static NTSTATUS dcerpc_pipe_connect_ncacn_unix_stream_recv(struct composite_context *c)
389 NTSTATUS status = composite_wait(c);
396 struct pipe_ncalrpc_state {
397 struct dcerpc_pipe_connect io;
400 static NTSTATUS dcerpc_pipe_connect_ncalrpc_recv(struct composite_context *c);
403 Stage 2 of ncalrpc: rpc pipe opened (or not)
405 static void continue_pipe_open_ncalrpc(struct composite_context *ctx)
407 struct composite_context *c = talloc_get_type(ctx->async.private_data,
408 struct composite_context);
410 /* receive result of pipe open request on ncalrpc */
411 c->status = dcerpc_pipe_connect_ncalrpc_recv(ctx);
412 if (!composite_is_ok(c)) return;
419 Initiate async open of a rpc connection request on NCALRPC using
420 the binding structure to determine the endpoint and options
422 static struct composite_context* dcerpc_pipe_connect_ncalrpc_send(TALLOC_CTX *mem_ctx,
423 struct dcerpc_pipe_connect *io)
425 struct composite_context *c;
426 struct pipe_ncalrpc_state *s;
427 struct composite_context *pipe_req;
429 /* composite context allocation and setup */
430 c = composite_create(mem_ctx, io->pipe->conn->event_ctx);
431 if (c == NULL) return NULL;
433 s = talloc_zero(c, struct pipe_ncalrpc_state);
434 if (composite_nomem(s, c)) return c;
437 /* store input parameters in state structure */
440 /* send pipe open request */
441 pipe_req = dcerpc_pipe_open_pipe_send(s->io.pipe->conn, s->io.binding->endpoint);
442 composite_continue(c, pipe_req, continue_pipe_open_ncalrpc, c);
448 Receive result of a rpc connection to a rpc pipe on NCALRPC
450 static NTSTATUS dcerpc_pipe_connect_ncalrpc_recv(struct composite_context *c)
452 NTSTATUS status = composite_wait(c);
459 struct pipe_connect_state {
460 struct dcerpc_pipe *pipe;
461 struct dcerpc_binding *binding;
462 const struct ndr_interface_table *table;
463 struct cli_credentials *credentials;
467 static void continue_map_binding(struct composite_context *ctx);
468 static void continue_connect(struct composite_context *c, struct pipe_connect_state *s);
469 static void continue_pipe_connect_ncacn_np_smb2(struct composite_context *ctx);
470 static void continue_pipe_connect_ncacn_np_smb(struct composite_context *ctx);
471 static void continue_pipe_connect_ncacn_ip_tcp(struct composite_context *ctx);
472 static void continue_pipe_connect_ncacn_unix(struct composite_context *ctx);
473 static void continue_pipe_connect_ncalrpc(struct composite_context *ctx);
474 static void continue_pipe_connect(struct composite_context *c, struct pipe_connect_state *s);
475 static void continue_pipe_auth(struct composite_context *ctx);
479 Stage 2 of pipe_connect_b: Receive result of endpoint mapping
481 static void continue_map_binding(struct composite_context *ctx)
483 struct composite_context *c = talloc_get_type(ctx->async.private_data,
484 struct composite_context);
485 struct pipe_connect_state *s = talloc_get_type(c->private_data,
486 struct pipe_connect_state);
488 c->status = dcerpc_epm_map_binding_recv(ctx);
489 if (!composite_is_ok(c)) return;
491 DEBUG(2,("Mapped to DCERPC endpoint %s\n", s->binding->endpoint));
493 continue_connect(c, s);
498 Stage 2 of pipe_connect_b: Continue connection after endpoint is known
500 static void continue_connect(struct composite_context *c, struct pipe_connect_state *s)
502 struct dcerpc_pipe_connect pc;
504 /* potential exits to another stage by sending an async request */
505 struct composite_context *ncacn_np_smb2_req;
506 struct composite_context *ncacn_np_smb_req;
507 struct composite_context *ncacn_ip_tcp_req;
508 struct composite_context *ncacn_unix_req;
509 struct composite_context *ncalrpc_req;
511 /* dcerpc pipe connect input parameters */
513 pc.binding = s->binding;
514 pc.interface = s->table;
515 pc.creds = s->credentials;
517 /* connect dcerpc pipe depending on required transport */
518 switch (s->binding->transport) {
520 if (pc.binding->flags & DCERPC_SMB2) {
521 /* new varient of SMB a.k.a. SMB2 */
522 ncacn_np_smb2_req = dcerpc_pipe_connect_ncacn_np_smb2_send(c, &pc);
523 composite_continue(c, ncacn_np_smb2_req, continue_pipe_connect_ncacn_np_smb2, c);
527 /* good old ordinary SMB */
528 ncacn_np_smb_req = dcerpc_pipe_connect_ncacn_np_smb_send(c, &pc);
529 composite_continue(c, ncacn_np_smb_req, continue_pipe_connect_ncacn_np_smb, c);
535 ncacn_ip_tcp_req = dcerpc_pipe_connect_ncacn_ip_tcp_send(c, &pc);
536 composite_continue(c, ncacn_ip_tcp_req, continue_pipe_connect_ncacn_ip_tcp, c);
539 case NCACN_UNIX_STREAM:
540 ncacn_unix_req = dcerpc_pipe_connect_ncacn_unix_stream_send(c, &pc);
541 composite_continue(c, ncacn_unix_req, continue_pipe_connect_ncacn_unix, c);
545 ncalrpc_req = dcerpc_pipe_connect_ncalrpc_send(c, &pc);
546 composite_continue(c, ncalrpc_req, continue_pipe_connect_ncalrpc, c);
550 /* looks like a transport we don't support now */
551 composite_error(c, NT_STATUS_NOT_SUPPORTED);
557 Stage 3 of pipe_connect_b: Receive result of pipe connect request on
560 static void continue_pipe_connect_ncacn_np_smb2(struct composite_context *ctx)
562 struct composite_context *c = talloc_get_type(ctx->async.private_data,
563 struct composite_context);
564 struct pipe_connect_state *s = talloc_get_type(c->private_data,
565 struct pipe_connect_state);
567 c->status = dcerpc_pipe_connect_ncacn_np_smb2_recv(ctx);
568 if (!composite_is_ok(c)) return;
570 continue_pipe_connect(c, s);
575 Stage 3 of pipe_connect_b: Receive result of pipe connect request on
578 static void continue_pipe_connect_ncacn_np_smb(struct composite_context *ctx)
580 struct composite_context *c = talloc_get_type(ctx->async.private_data,
581 struct composite_context);
582 struct pipe_connect_state *s = talloc_get_type(c->private_data,
583 struct pipe_connect_state);
585 c->status = dcerpc_pipe_connect_ncacn_np_smb_recv(ctx);
586 if (!composite_is_ok(c)) return;
588 continue_pipe_connect(c, s);
593 Stage 3 of pipe_connect_b: Receive result of pipe connect request on tcp/ip
595 static void continue_pipe_connect_ncacn_ip_tcp(struct composite_context *ctx)
597 struct composite_context *c = talloc_get_type(ctx->async.private_data,
598 struct composite_context);
599 struct pipe_connect_state *s = talloc_get_type(c->private_data,
600 struct pipe_connect_state);
602 c->status = dcerpc_pipe_connect_ncacn_ip_tcp_recv(ctx);
603 if (!composite_is_ok(c)) return;
605 continue_pipe_connect(c, s);
610 Stage 3 of pipe_connect_b: Receive result of pipe connect request on unix socket
612 static void continue_pipe_connect_ncacn_unix(struct composite_context *ctx)
614 struct composite_context *c = talloc_get_type(ctx->async.private_data,
615 struct composite_context);
616 struct pipe_connect_state *s = talloc_get_type(c->private_data,
617 struct pipe_connect_state);
619 c->status = dcerpc_pipe_connect_ncacn_unix_stream_recv(ctx);
620 if (!composite_is_ok(c)) return;
622 continue_pipe_connect(c, s);
627 Stage 3 of pipe_connect_b: Receive result of pipe connect request on local rpc
629 static void continue_pipe_connect_ncalrpc(struct composite_context *ctx)
631 struct composite_context *c = talloc_get_type(ctx->async.private_data,
632 struct composite_context);
633 struct pipe_connect_state *s = talloc_get_type(c->private_data,
634 struct pipe_connect_state);
636 c->status = dcerpc_pipe_connect_ncalrpc_recv(ctx);
637 if (!composite_is_ok(c)) return;
639 continue_pipe_connect(c, s);
644 Stage 4 of pipe_connect_b: Start an authentication on connected dcerpc pipe
645 depending on credentials and binding flags passed.
647 static void continue_pipe_connect(struct composite_context *c, struct pipe_connect_state *s)
649 struct composite_context *auth_bind_req;
651 s->pipe->binding = s->binding;
652 if (!talloc_reference(s->pipe, s->binding)) {
653 composite_error(c, NT_STATUS_NO_MEMORY);
657 auth_bind_req = dcerpc_pipe_auth_send(s->pipe, s->binding, s->table,
659 composite_continue(c, auth_bind_req, continue_pipe_auth, c);
664 Stage 5 of pipe_connect_b: Receive result of pipe authentication request
665 and say if all went ok
667 static void continue_pipe_auth(struct composite_context *ctx)
669 struct composite_context *c = talloc_get_type(ctx->async.private_data,
670 struct composite_context);
671 struct pipe_connect_state *s = talloc_get_type(c->private_data, struct pipe_connect_state);
673 c->status = dcerpc_pipe_auth_recv(ctx, s, &s->pipe);
674 if (!composite_is_ok(c)) return;
681 handle timeouts of a dcerpc connect
683 static void dcerpc_connect_timeout_handler(struct event_context *ev, struct timed_event *te,
684 struct timeval t, void *private)
686 struct composite_context *c = talloc_get_type(private, struct composite_context);
687 composite_error(c, NT_STATUS_IO_TIMEOUT);
691 start a request to open a rpc connection to a rpc pipe, using
692 specified binding structure to determine the endpoint and options
694 struct composite_context* dcerpc_pipe_connect_b_send(TALLOC_CTX *parent_ctx,
695 struct dcerpc_binding *binding,
696 const struct ndr_interface_table *table,
697 struct cli_credentials *credentials,
698 struct event_context *ev)
700 struct composite_context *c;
701 struct pipe_connect_state *s;
702 struct event_context *new_ev = NULL;
705 new_ev = event_context_init(parent_ctx);
706 if (new_ev == NULL) return NULL;
710 /* composite context allocation and setup */
711 c = composite_create(parent_ctx, ev);
716 talloc_steal(c, new_ev);
718 s = talloc_zero(c, struct pipe_connect_state);
719 if (composite_nomem(s, c)) return c;
722 /* initialise dcerpc pipe structure */
723 s->pipe = dcerpc_pipe_init(c, ev);
724 if (composite_nomem(s->pipe, c)) return c;
726 /* store parameters in state structure */
727 s->binding = binding;
729 s->credentials = credentials;
731 event_add_timed(c->event_ctx, c,
732 timeval_current_ofs(DCERPC_REQUEST_TIMEOUT, 0),
733 dcerpc_connect_timeout_handler, c);
735 switch (s->binding->transport) {
737 struct composite_context *binding_req;
738 binding_req = dcerpc_epm_map_binding_send(c, s->binding, s->table,
739 s->pipe->conn->event_ctx);
740 composite_continue(c, binding_req, continue_map_binding, c);
747 if (!s->binding->endpoint) {
748 struct composite_context *binding_req;
749 binding_req = dcerpc_epm_map_binding_send(c, s->binding, s->table,
750 s->pipe->conn->event_ctx);
751 composite_continue(c, binding_req, continue_map_binding, c);
759 continue_connect(c, s);
765 receive result of a request to open a rpc connection to a rpc pipe
767 NTSTATUS dcerpc_pipe_connect_b_recv(struct composite_context *c, TALLOC_CTX *mem_ctx,
768 struct dcerpc_pipe **p)
771 struct pipe_connect_state *s;
773 status = composite_wait(c);
775 if (NT_STATUS_IS_OK(status)) {
776 s = talloc_get_type(c->private_data, struct pipe_connect_state);
777 talloc_steal(mem_ctx, s->pipe);
786 open a rpc connection to a rpc pipe, using the specified
787 binding structure to determine the endpoint and options - sync version
789 NTSTATUS dcerpc_pipe_connect_b(TALLOC_CTX *parent_ctx,
790 struct dcerpc_pipe **pp,
791 struct dcerpc_binding *binding,
792 const struct ndr_interface_table *table,
793 struct cli_credentials *credentials,
794 struct event_context *ev)
796 struct composite_context *c;
798 c = dcerpc_pipe_connect_b_send(parent_ctx, binding, table,
800 return dcerpc_pipe_connect_b_recv(c, parent_ctx, pp);
804 struct pipe_conn_state {
805 struct dcerpc_pipe *pipe;
809 static void continue_pipe_connect_b(struct composite_context *ctx);
813 Initiate rpc connection to a rpc pipe, using the specified string
814 binding to determine the endpoint and options.
815 The string is to be parsed to a binding structure first.
817 struct composite_context* dcerpc_pipe_connect_send(TALLOC_CTX *parent_ctx,
819 const struct ndr_interface_table *table,
820 struct cli_credentials *credentials,
821 struct event_context *ev)
823 struct composite_context *c;
824 struct pipe_conn_state *s;
825 struct dcerpc_binding *b;
826 struct composite_context *pipe_conn_req;
827 struct event_context *new_ev = NULL;
830 new_ev = event_context_init(parent_ctx);
831 if (new_ev == NULL) return NULL;
835 /* composite context allocation and setup */
836 c = composite_create(parent_ctx, ev);
841 talloc_steal(c, new_ev);
843 s = talloc_zero(c, struct pipe_conn_state);
844 if (composite_nomem(s, c)) return c;
847 /* parse binding string to the structure */
848 c->status = dcerpc_parse_binding(c, binding, &b);
849 if (!NT_STATUS_IS_OK(c->status)) {
850 DEBUG(0, ("Failed to parse dcerpc binding '%s'\n", binding));
851 composite_error(c, c->status);
855 DEBUG(3, ("Using binding %s\n", dcerpc_binding_string(c, b)));
858 start connecting to a rpc pipe after binding structure
861 pipe_conn_req = dcerpc_pipe_connect_b_send(c, b, table,
863 composite_continue(c, pipe_conn_req, continue_pipe_connect_b, c);
869 Stage 2 of pipe_connect: Receive result of actual pipe connect request
870 and say if we're done ok
872 static void continue_pipe_connect_b(struct composite_context *ctx)
874 struct composite_context *c = talloc_get_type(ctx->async.private_data,
875 struct composite_context);
876 struct pipe_conn_state *s = talloc_get_type(c->private_data,
877 struct pipe_conn_state);
879 c->status = dcerpc_pipe_connect_b_recv(ctx, c, &s->pipe);
880 talloc_steal(s, s->pipe);
881 if (!composite_is_ok(c)) return;
888 Receive result of pipe connect (using binding string) request
889 and return connected pipe structure.
891 NTSTATUS dcerpc_pipe_connect_recv(struct composite_context *c,
893 struct dcerpc_pipe **pp)
896 struct pipe_conn_state *s;
898 status = composite_wait(c);
899 if (NT_STATUS_IS_OK(status)) {
900 s = talloc_get_type(c->private_data, struct pipe_conn_state);
901 *pp = talloc_steal(mem_ctx, s->pipe);
909 Open a rpc connection to a rpc pipe, using the specified string
910 binding to determine the endpoint and options - sync version
912 NTSTATUS dcerpc_pipe_connect(TALLOC_CTX *parent_ctx,
913 struct dcerpc_pipe **pp,
915 const struct ndr_interface_table *table,
916 struct cli_credentials *credentials,
917 struct event_context *ev)
919 struct composite_context *c;
920 c = dcerpc_pipe_connect_send(parent_ctx, binding,
923 return dcerpc_pipe_connect_recv(c, parent_ctx, pp);