2 Unix SMB/CIFS implementation.
4 dcerpc utility functions
6 Copyright (C) Andrew Tridgell 2003
7 Copyright (C) Jelmer Vernooij 2004
8 Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005
9 Copyright (C) Rafal Szczesniak 2006
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/>.
26 #include "lib/events/events.h"
27 #include "libcli/composite/composite.h"
28 #include "librpc/gen_ndr/ndr_epmapper_c.h"
29 #include "librpc/gen_ndr/ndr_dcerpc.h"
30 #include "librpc/gen_ndr/ndr_misc.h"
31 #include "librpc/rpc/dcerpc_proto.h"
32 #include "auth/credentials/credentials.h"
33 #include "param/param.h"
36 find a dcerpc call on an interface by name
38 const struct ndr_interface_call
*dcerpc_iface_find_call(const struct ndr_interface_table
*iface
,
42 for (i
=0;i
<iface
->num_calls
;i
++) {
43 if (strcmp(iface
->calls
[i
].name
, name
) == 0) {
44 return &iface
->calls
[i
];
51 push a ncacn_packet into a blob, potentially with auth info
53 NTSTATUS
ncacn_push_auth(DATA_BLOB
*blob
, TALLOC_CTX
*mem_ctx
,
54 struct ncacn_packet
*pkt
,
55 struct dcerpc_auth
*auth_info
)
58 enum ndr_err_code ndr_err
;
60 ndr
= ndr_push_init_ctx(mem_ctx
);
62 return NT_STATUS_NO_MEMORY
;
65 if (!(pkt
->drep
[0] & DCERPC_DREP_LE
)) {
66 ndr
->flags
|= LIBNDR_FLAG_BIGENDIAN
;
69 if (pkt
->pfc_flags
& DCERPC_PFC_FLAG_OBJECT_UUID
) {
70 ndr
->flags
|= LIBNDR_FLAG_OBJECT_PRESENT
;
74 pkt
->auth_length
= auth_info
->credentials
.length
;
79 ndr_err
= ndr_push_ncacn_packet(ndr
, NDR_SCALARS
|NDR_BUFFERS
, pkt
);
80 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err
)) {
81 return ndr_map_error2ntstatus(ndr_err
);
86 /* the s3 rpc server doesn't handle auth padding in
87 bind requests. Use zero auth padding to keep us
88 working with old servers */
89 uint32_t offset
= ndr
->offset
;
90 ndr_err
= ndr_push_align(ndr
, 16);
91 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err
)) {
92 return ndr_map_error2ntstatus(ndr_err
);
94 auth_info
->auth_pad_length
= ndr
->offset
- offset
;
96 auth_info
->auth_pad_length
= 0;
98 ndr_err
= ndr_push_dcerpc_auth(ndr
, NDR_SCALARS
|NDR_BUFFERS
, auth_info
);
99 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err
)) {
100 return ndr_map_error2ntstatus(ndr_err
);
104 *blob
= ndr_push_blob(ndr
);
106 /* fill in the frag length */
107 dcerpc_set_frag_length(blob
, blob
->length
);
113 struct epm_map_binding_state
{
114 struct dcerpc_binding
*binding
;
115 const struct ndr_interface_table
*table
;
116 struct dcerpc_pipe
*pipe
;
117 struct policy_handle handle
;
119 struct epm_twr_t twr
;
120 struct epm_twr_t
*twr_r
;
126 static void continue_epm_recv_binding(struct composite_context
*ctx
);
127 static void continue_epm_map(struct tevent_req
*subreq
);
131 Stage 2 of epm_map_binding: Receive connected rpc pipe and send endpoint
134 static void continue_epm_recv_binding(struct composite_context
*ctx
)
136 struct composite_context
*c
= talloc_get_type(ctx
->async
.private_data
,
137 struct composite_context
);
138 struct epm_map_binding_state
*s
= talloc_get_type(c
->private_data
,
139 struct epm_map_binding_state
);
140 struct tevent_req
*subreq
;
142 /* receive result of rpc pipe connect request */
143 c
->status
= dcerpc_pipe_connect_b_recv(ctx
, c
, &s
->pipe
);
144 if (!composite_is_ok(c
)) return;
146 /* prepare requested binding parameters */
147 s
->binding
->object
= s
->table
->syntax_id
;
149 c
->status
= dcerpc_binding_build_tower(s
->pipe
, s
->binding
, &s
->twr
.tower
);
150 if (!composite_is_ok(c
)) return;
152 /* with some nice pretty paper around it of course */
153 s
->r
.in
.object
= &s
->guid
;
154 s
->r
.in
.map_tower
= &s
->twr
;
155 s
->r
.in
.entry_handle
= &s
->handle
;
156 s
->r
.in
.max_towers
= 1;
157 s
->r
.out
.entry_handle
= &s
->handle
;
158 s
->r
.out
.num_towers
= &s
->num_towers
;
160 /* send request for an endpoint mapping - a rpc request on connected pipe */
161 subreq
= dcerpc_epm_Map_r_send(s
, c
->event_ctx
,
162 s
->pipe
->binding_handle
,
164 if (composite_nomem(subreq
, c
)) return;
166 tevent_req_set_callback(subreq
, continue_epm_map
, c
);
171 Stage 3 of epm_map_binding: Receive endpoint mapping and provide binding details
173 static void continue_epm_map(struct tevent_req
*subreq
)
175 struct composite_context
*c
= tevent_req_callback_data(subreq
,
176 struct composite_context
);
177 struct epm_map_binding_state
*s
= talloc_get_type(c
->private_data
,
178 struct epm_map_binding_state
);
180 /* receive result of a rpc request */
181 c
->status
= dcerpc_epm_Map_r_recv(subreq
, s
);
183 if (!composite_is_ok(c
)) return;
185 /* check the details */
186 if (s
->r
.out
.result
!= 0 || *s
->r
.out
.num_towers
!= 1) {
187 composite_error(c
, NT_STATUS_PORT_UNREACHABLE
);
191 s
->twr_r
= s
->r
.out
.towers
[0].twr
;
192 if (s
->twr_r
== NULL
) {
193 composite_error(c
, NT_STATUS_PORT_UNREACHABLE
);
197 if (s
->twr_r
->tower
.num_floors
!= s
->twr
.tower
.num_floors
||
198 s
->twr_r
->tower
.floors
[3].lhs
.protocol
!= s
->twr
.tower
.floors
[3].lhs
.protocol
) {
199 composite_error(c
, NT_STATUS_PORT_UNREACHABLE
);
203 /* get received endpoint */
204 s
->binding
->endpoint
= talloc_reference(s
->binding
,
205 dcerpc_floor_get_rhs_data(c
, &s
->twr_r
->tower
.floors
[3]));
206 if (composite_nomem(s
->binding
->endpoint
, c
)) return;
213 Request for endpoint mapping of dcerpc binding - try to request for endpoint
214 unless there is default one.
216 struct composite_context
*dcerpc_epm_map_binding_send(TALLOC_CTX
*mem_ctx
,
217 struct dcerpc_binding
*binding
,
218 const struct ndr_interface_table
*table
,
219 struct tevent_context
*ev
,
220 struct loadparm_context
*lp_ctx
)
222 struct composite_context
*c
;
223 struct epm_map_binding_state
*s
;
224 struct composite_context
*pipe_connect_req
;
225 struct cli_credentials
*anon_creds
;
228 struct dcerpc_binding
*epmapper_binding
;
235 /* composite context allocation and setup */
236 c
= composite_create(mem_ctx
, ev
);
241 s
= talloc_zero(c
, struct epm_map_binding_state
);
242 if (composite_nomem(s
, c
)) return c
;
245 s
->binding
= binding
;
248 /* anonymous credentials for rpc connection used to get endpoint mapping */
249 anon_creds
= cli_credentials_init(mem_ctx
);
250 cli_credentials_set_anonymous(anon_creds
);
253 First, check if there is a default endpoint specified in the IDL
256 struct dcerpc_binding
*default_binding
;
258 /* Find one of the default pipes for this interface */
259 for (i
= 0; i
< table
->endpoints
->count
; i
++) {
260 status
= dcerpc_parse_binding(mem_ctx
, table
->endpoints
->names
[i
], &default_binding
);
262 if (NT_STATUS_IS_OK(status
)) {
263 if (binding
->transport
== NCA_UNKNOWN
)
264 binding
->transport
= default_binding
->transport
;
265 if (default_binding
->transport
== binding
->transport
&&
266 default_binding
->endpoint
) {
267 binding
->endpoint
= talloc_reference(binding
, default_binding
->endpoint
);
268 talloc_free(default_binding
);
274 talloc_free(default_binding
);
280 epmapper_binding
= talloc_zero(c
, struct dcerpc_binding
);
281 if (composite_nomem(epmapper_binding
, c
)) return c
;
283 /* basic endpoint mapping data */
284 epmapper_binding
->transport
= binding
->transport
;
285 epmapper_binding
->host
= talloc_reference(epmapper_binding
, binding
->host
);
286 epmapper_binding
->target_hostname
= epmapper_binding
->host
;
287 epmapper_binding
->options
= NULL
;
288 epmapper_binding
->localaddress
= talloc_reference(epmapper_binding
, binding
->localaddress
);
289 epmapper_binding
->flags
= 0;
290 epmapper_binding
->assoc_group_id
= 0;
291 epmapper_binding
->endpoint
= NULL
;
293 /* initiate rpc pipe connection */
294 pipe_connect_req
= dcerpc_pipe_connect_b_send(c
, epmapper_binding
,
296 anon_creds
, c
->event_ctx
,
298 if (composite_nomem(pipe_connect_req
, c
)) return c
;
300 composite_continue(c
, pipe_connect_req
, continue_epm_recv_binding
, c
);
306 Receive result of endpoint mapping request
308 NTSTATUS
dcerpc_epm_map_binding_recv(struct composite_context
*c
)
310 NTSTATUS status
= composite_wait(c
);
318 Get endpoint mapping for rpc connection
320 _PUBLIC_ NTSTATUS
dcerpc_epm_map_binding(TALLOC_CTX
*mem_ctx
, struct dcerpc_binding
*binding
,
321 const struct ndr_interface_table
*table
, struct tevent_context
*ev
,
322 struct loadparm_context
*lp_ctx
)
324 struct composite_context
*c
;
326 c
= dcerpc_epm_map_binding_send(mem_ctx
, binding
, table
, ev
, lp_ctx
);
327 return dcerpc_epm_map_binding_recv(c
);
331 struct pipe_auth_state
{
332 struct dcerpc_pipe
*pipe
;
333 struct dcerpc_binding
*binding
;
334 const struct ndr_interface_table
*table
;
335 struct loadparm_context
*lp_ctx
;
336 struct cli_credentials
*credentials
;
340 static void continue_auth_schannel(struct composite_context
*ctx
);
341 static void continue_auth(struct composite_context
*ctx
);
342 static void continue_auth_none(struct composite_context
*ctx
);
343 static void continue_ntlmssp_connection(struct composite_context
*ctx
);
344 static void continue_spnego_after_wrong_pass(struct composite_context
*ctx
);
348 Stage 2 of pipe_auth: Receive result of schannel bind request
350 static void continue_auth_schannel(struct composite_context
*ctx
)
352 struct composite_context
*c
= talloc_get_type(ctx
->async
.private_data
,
353 struct composite_context
);
355 c
->status
= dcerpc_bind_auth_schannel_recv(ctx
);
356 if (!composite_is_ok(c
)) return;
363 Stage 2 of pipe_auth: Receive result of authenticated bind request
365 static void continue_auth(struct composite_context
*ctx
)
367 struct composite_context
*c
= talloc_get_type(ctx
->async
.private_data
,
368 struct composite_context
);
370 c
->status
= dcerpc_bind_auth_recv(ctx
);
371 if (!composite_is_ok(c
)) return;
376 Stage 2 of pipe_auth: Receive result of authenticated bind request, but handle fallbacks:
379 static void continue_auth_auto(struct composite_context
*ctx
)
381 struct composite_context
*c
= talloc_get_type(ctx
->async
.private_data
,
382 struct composite_context
);
383 struct pipe_auth_state
*s
= talloc_get_type(c
->private_data
, struct pipe_auth_state
);
384 struct composite_context
*sec_conn_req
;
386 c
->status
= dcerpc_bind_auth_recv(ctx
);
387 if (NT_STATUS_EQUAL(c
->status
, NT_STATUS_INVALID_PARAMETER
)) {
389 * Retry with NTLMSSP auth as fallback
390 * send a request for secondary rpc connection
392 sec_conn_req
= dcerpc_secondary_connection_send(s
->pipe
,
394 composite_continue(c
, sec_conn_req
, continue_ntlmssp_connection
, c
);
396 } else if (NT_STATUS_EQUAL(c
->status
, NT_STATUS_LOGON_FAILURE
)) {
397 if (cli_credentials_wrong_password(s
->credentials
)) {
399 * Retry SPNEGO with a better password
400 * send a request for secondary rpc connection
402 sec_conn_req
= dcerpc_secondary_connection_send(s
->pipe
,
404 composite_continue(c
, sec_conn_req
, continue_spnego_after_wrong_pass
, c
);
409 if (!composite_is_ok(c
)) return;
415 Stage 3 of pipe_auth (fallback to NTLMSSP case): Receive secondary
416 rpc connection (the first one can't be used any more, due to the
417 bind nak) and perform authenticated bind request
419 static void continue_ntlmssp_connection(struct composite_context
*ctx
)
421 struct composite_context
*c
;
422 struct pipe_auth_state
*s
;
423 struct composite_context
*auth_req
;
424 struct dcerpc_pipe
*p2
;
427 c
= talloc_get_type(ctx
->async
.private_data
, struct composite_context
);
428 s
= talloc_get_type(c
->private_data
, struct pipe_auth_state
);
430 /* receive secondary rpc connection */
431 c
->status
= dcerpc_secondary_connection_recv(ctx
, &p2
);
432 if (!composite_is_ok(c
)) return;
435 /* this is a rather strange situation. When
436 we come into the routine, s is a child of s->pipe, and
437 when we created p2 above, it also became a child of
440 Now we want p2 to be a parent of s->pipe, and we want s to
441 be a parent of both of them! If we don't do this very
442 carefully we end up creating a talloc loop
445 /* we need the new contexts to hang off the same context
446 that s->pipe is on, but the only way to get that is
447 via talloc_parent() */
448 pp
= talloc_parent(s
->pipe
);
450 /* promote s to be at the top */
453 /* and put p2 under s */
456 /* now put s->pipe under p2 */
457 talloc_steal(p2
, s
->pipe
);
461 /* initiate a authenticated bind */
462 auth_req
= dcerpc_bind_auth_send(c
, s
->pipe
, s
->table
,
464 lpcfg_gensec_settings(c
, s
->lp_ctx
),
465 DCERPC_AUTH_TYPE_NTLMSSP
,
466 dcerpc_auth_level(s
->pipe
->conn
),
467 s
->table
->authservices
->names
[0]);
468 composite_continue(c
, auth_req
, continue_auth
, c
);
472 Stage 3 of pipe_auth (retry on wrong password): Receive secondary
473 rpc connection (the first one can't be used any more, due to the
474 bind nak) and perform authenticated bind request
476 static void continue_spnego_after_wrong_pass(struct composite_context
*ctx
)
478 struct composite_context
*c
;
479 struct pipe_auth_state
*s
;
480 struct composite_context
*auth_req
;
481 struct dcerpc_pipe
*p2
;
483 c
= talloc_get_type(ctx
->async
.private_data
, struct composite_context
);
484 s
= talloc_get_type(c
->private_data
, struct pipe_auth_state
);
486 /* receive secondary rpc connection */
487 c
->status
= dcerpc_secondary_connection_recv(ctx
, &p2
);
488 if (!composite_is_ok(c
)) return;
491 talloc_steal(p2
, s
->pipe
);
494 /* initiate a authenticated bind */
495 auth_req
= dcerpc_bind_auth_send(c
, s
->pipe
, s
->table
,
497 lpcfg_gensec_settings(c
, s
->lp_ctx
),
498 DCERPC_AUTH_TYPE_SPNEGO
,
499 dcerpc_auth_level(s
->pipe
->conn
),
500 s
->table
->authservices
->names
[0]);
501 composite_continue(c
, auth_req
, continue_auth
, c
);
506 Stage 2 of pipe_auth: Receive result of non-authenticated bind request
508 static void continue_auth_none(struct composite_context
*ctx
)
510 struct composite_context
*c
= talloc_get_type(ctx
->async
.private_data
,
511 struct composite_context
);
513 c
->status
= dcerpc_bind_auth_none_recv(ctx
);
514 if (!composite_is_ok(c
)) return;
521 Request to perform an authenticated bind if required. Authentication
522 is determined using credentials passed and binding flags.
524 struct composite_context
*dcerpc_pipe_auth_send(struct dcerpc_pipe
*p
,
525 struct dcerpc_binding
*binding
,
526 const struct ndr_interface_table
*table
,
527 struct cli_credentials
*credentials
,
528 struct loadparm_context
*lp_ctx
)
530 struct composite_context
*c
;
531 struct pipe_auth_state
*s
;
532 struct composite_context
*auth_schannel_req
;
533 struct composite_context
*auth_req
;
534 struct composite_context
*auth_none_req
;
535 struct dcerpc_connection
*conn
;
538 /* composite context allocation and setup */
539 c
= composite_create(p
, p
->conn
->event_ctx
);
540 if (c
== NULL
) return NULL
;
542 s
= talloc_zero(c
, struct pipe_auth_state
);
543 if (composite_nomem(s
, c
)) return c
;
546 /* store parameters in state structure */
547 s
->binding
= binding
;
549 s
->credentials
= credentials
;
553 conn
= s
->pipe
->conn
;
554 conn
->flags
= binding
->flags
;
557 conn
->flags
|= DCERPC_DEBUG_PRINT_BOTH
;
560 /* remember the binding string for possible secondary connections */
561 conn
->binding_string
= dcerpc_binding_string(p
, binding
);
563 if (cli_credentials_is_anonymous(s
->credentials
)) {
564 auth_none_req
= dcerpc_bind_auth_none_send(c
, s
->pipe
, s
->table
);
565 composite_continue(c
, auth_none_req
, continue_auth_none
, c
);
569 if ((binding
->flags
& DCERPC_SCHANNEL
) &&
570 !cli_credentials_get_netlogon_creds(s
->credentials
)) {
571 /* If we don't already have netlogon credentials for
572 * the schannel bind, then we have to get these
574 auth_schannel_req
= dcerpc_bind_auth_schannel_send(c
, s
->pipe
, s
->table
,
575 s
->credentials
, s
->lp_ctx
,
576 dcerpc_auth_level(conn
));
577 composite_continue(c
, auth_schannel_req
, continue_auth_schannel
, c
);
582 * we rely on the already authenticated CIFS connection
583 * if not doing sign or seal
585 if (conn
->transport
.transport
== NCACN_NP
&&
586 !(s
->binding
->flags
& (DCERPC_SIGN
|DCERPC_SEAL
))) {
587 auth_none_req
= dcerpc_bind_auth_none_send(c
, s
->pipe
, s
->table
);
588 composite_continue(c
, auth_none_req
, continue_auth_none
, c
);
593 /* Perform an authenticated DCE-RPC bind
595 if (!(conn
->flags
& (DCERPC_SIGN
|DCERPC_SEAL
))) {
597 we are doing an authenticated connection,
598 but not using sign or seal. We must force
599 the CONNECT dcerpc auth type as a NONE auth
600 type doesn't allow authentication
601 information to be passed.
603 conn
->flags
|= DCERPC_CONNECT
;
606 if (s
->binding
->flags
& DCERPC_AUTH_SPNEGO
) {
607 auth_type
= DCERPC_AUTH_TYPE_SPNEGO
;
609 } else if (s
->binding
->flags
& DCERPC_AUTH_KRB5
) {
610 auth_type
= DCERPC_AUTH_TYPE_KRB5
;
612 } else if (s
->binding
->flags
& DCERPC_SCHANNEL
) {
613 auth_type
= DCERPC_AUTH_TYPE_SCHANNEL
;
615 } else if (s
->binding
->flags
& DCERPC_AUTH_NTLM
) {
616 auth_type
= DCERPC_AUTH_TYPE_NTLMSSP
;
619 /* try SPNEGO with fallback to NTLMSSP */
620 auth_req
= dcerpc_bind_auth_send(c
, s
->pipe
, s
->table
,
622 lpcfg_gensec_settings(c
, s
->lp_ctx
),
623 DCERPC_AUTH_TYPE_SPNEGO
,
624 dcerpc_auth_level(conn
),
625 s
->table
->authservices
->names
[0]);
626 composite_continue(c
, auth_req
, continue_auth_auto
, c
);
630 auth_req
= dcerpc_bind_auth_send(c
, s
->pipe
, s
->table
,
632 lpcfg_gensec_settings(c
, s
->lp_ctx
),
634 dcerpc_auth_level(conn
),
635 s
->table
->authservices
->names
[0]);
636 composite_continue(c
, auth_req
, continue_auth
, c
);
642 Receive result of authenticated bind request on dcerpc pipe
644 This returns *p, which may be different to the one originally
645 supllied, as it rebinds to a new pipe due to authentication fallback
648 NTSTATUS
dcerpc_pipe_auth_recv(struct composite_context
*c
, TALLOC_CTX
*mem_ctx
,
649 struct dcerpc_pipe
**p
)
653 struct pipe_auth_state
*s
= talloc_get_type(c
->private_data
,
654 struct pipe_auth_state
);
655 status
= composite_wait(c
);
656 if (!NT_STATUS_IS_OK(status
)) {
657 char *uuid_str
= GUID_string(s
->pipe
, &s
->table
->syntax_id
.uuid
);
658 DEBUG(0, ("Failed to bind to uuid %s - %s\n", uuid_str
, nt_errstr(status
)));
659 talloc_free(uuid_str
);
661 talloc_steal(mem_ctx
, s
->pipe
);
671 Perform an authenticated bind if needed - sync version
673 This may change *p, as it rebinds to a new pipe due to authentication fallback
675 _PUBLIC_ NTSTATUS
dcerpc_pipe_auth(TALLOC_CTX
*mem_ctx
,
676 struct dcerpc_pipe
**p
,
677 struct dcerpc_binding
*binding
,
678 const struct ndr_interface_table
*table
,
679 struct cli_credentials
*credentials
,
680 struct loadparm_context
*lp_ctx
)
682 struct composite_context
*c
;
684 c
= dcerpc_pipe_auth_send(*p
, binding
, table
, credentials
, lp_ctx
);
685 return dcerpc_pipe_auth_recv(c
, mem_ctx
, p
);
689 NTSTATUS
dcerpc_generic_session_key(struct dcerpc_connection
*c
,
690 DATA_BLOB
*session_key
)
692 /* this took quite a few CPU cycles to find ... */
693 session_key
->data
= discard_const_p(unsigned char, "SystemLibraryDTC");
694 session_key
->length
= 16;
699 fetch the user session key - may be default (above) or the SMB session key
701 The key is always truncated to 16 bytes
703 _PUBLIC_ NTSTATUS
dcerpc_fetch_session_key(struct dcerpc_pipe
*p
,
704 DATA_BLOB
*session_key
)
707 status
= p
->conn
->security_state
.session_key(p
->conn
, session_key
);
708 if (!NT_STATUS_IS_OK(status
)) {
712 session_key
->length
= MIN(session_key
->length
, 16);
719 log a rpc packet in a format suitable for ndrdump. This is especially useful
720 for sealed packets, where ethereal cannot easily see the contents
722 this triggers on a debug level of >= 10
724 _PUBLIC_
void dcerpc_log_packet(const char *lockdir
,
725 const struct ndr_interface_table
*ndr
,
726 uint32_t opnum
, uint32_t flags
,
727 const DATA_BLOB
*pkt
)
729 const int num_examples
= 20;
732 if (lockdir
== NULL
) return;
734 for (i
=0;i
<num_examples
;i
++) {
736 asprintf(&name
, "%s/rpclog/%s-%u.%d.%s",
737 lockdir
, ndr
->name
, opnum
, i
,
738 (flags
&NDR_IN
)?"in":"out");
742 if (!file_exist(name
)) {
743 if (file_save(name
, pkt
->data
, pkt
->length
)) {
744 DEBUG(10,("Logged rpc packet to %s\n", name
));
756 create a secondary context from a primary connection
758 this uses dcerpc_alter_context() to create a new dcerpc context_id
760 _PUBLIC_ NTSTATUS
dcerpc_secondary_context(struct dcerpc_pipe
*p
,
761 struct dcerpc_pipe
**pp2
,
762 const struct ndr_interface_table
*table
)
765 struct dcerpc_pipe
*p2
;
767 p2
= talloc_zero(p
, struct dcerpc_pipe
);
769 return NT_STATUS_NO_MEMORY
;
771 p2
->conn
= talloc_reference(p2
, p
->conn
);
772 p2
->request_timeout
= p
->request_timeout
;
774 p2
->context_id
= ++p
->conn
->next_context_id
;
776 p2
->syntax
= table
->syntax_id
;
778 p2
->transfer_syntax
= p
->transfer_syntax
;
780 p2
->binding
= talloc_reference(p2
, p
->binding
);
782 p2
->binding_handle
= dcerpc_pipe_binding_handle(p2
);
783 if (p2
->binding_handle
== NULL
) {
785 return NT_STATUS_NO_MEMORY
;
788 status
= dcerpc_alter_context(p2
, p2
, &p2
->syntax
, &p2
->transfer_syntax
);
789 if (!NT_STATUS_IS_OK(status
)) {