2 Unix SMB/CIFS implementation.
5 Copyright (C) Stefan Metzmacher 2009
6 Copyright (C) Jeremy Allison 2010
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>.
23 #include "smbd/smbd.h"
24 #include "smbd/globals.h"
25 #include "../libcli/smb/smb_common.h"
26 #include "../libcli/auth/spnego.h"
27 #include "../libcli/auth/ntlmssp.h"
28 #include "ntlmssp_wrap.h"
29 #include "../librpc/gen_ndr/krb5pac.h"
30 #include "libads/kerberos_proto.h"
31 #include "../lib/util/asn1.h"
33 #include "../lib/tsocket/tsocket.h"
35 static NTSTATUS smbd_smb2_session_setup(struct smbd_smb2_request *smb2req,
36 uint64_t in_session_id,
37 uint8_t in_security_mode,
38 DATA_BLOB in_security_buffer,
39 uint16_t *out_session_flags,
40 DATA_BLOB *out_security_buffer,
41 uint64_t *out_session_id);
43 NTSTATUS smbd_smb2_request_process_sesssetup(struct smbd_smb2_request *smb2req)
46 const uint8_t *inbody;
47 int i = smb2req->current_idx;
51 size_t expected_body_size = 0x19;
53 uint64_t in_session_id;
54 uint8_t in_security_mode;
55 uint16_t in_security_offset;
56 uint16_t in_security_length;
57 DATA_BLOB in_security_buffer;
58 uint16_t out_session_flags;
59 uint64_t out_session_id;
60 uint16_t out_security_offset;
61 DATA_BLOB out_security_buffer;
64 inhdr = (const uint8_t *)smb2req->in.vector[i+0].iov_base;
66 if (smb2req->in.vector[i+1].iov_len != (expected_body_size & 0xFFFFFFFE)) {
67 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
70 inbody = (const uint8_t *)smb2req->in.vector[i+1].iov_base;
72 body_size = SVAL(inbody, 0x00);
73 if (body_size != expected_body_size) {
74 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
77 in_security_offset = SVAL(inbody, 0x0C);
78 in_security_length = SVAL(inbody, 0x0E);
80 if (in_security_offset != (SMB2_HDR_BODY + (body_size & 0xFFFFFFFE))) {
81 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
84 if (in_security_length > smb2req->in.vector[i+2].iov_len) {
85 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
88 in_session_id = BVAL(inhdr, SMB2_HDR_SESSION_ID);
89 in_security_mode = CVAL(inbody, 0x03);
90 in_security_buffer.data = (uint8_t *)smb2req->in.vector[i+2].iov_base;
91 in_security_buffer.length = in_security_length;
93 status = smbd_smb2_session_setup(smb2req,
100 if (!NT_STATUS_IS_OK(status) &&
101 !NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
102 status = nt_status_squash(status);
103 return smbd_smb2_request_error(smb2req, status);
106 out_security_offset = SMB2_HDR_BODY + 0x08;
108 outhdr = (uint8_t *)smb2req->out.vector[i].iov_base;
110 outbody = data_blob_talloc(smb2req->out.vector, NULL, 0x08);
111 if (outbody.data == NULL) {
112 return smbd_smb2_request_error(smb2req, NT_STATUS_NO_MEMORY);
115 SBVAL(outhdr, SMB2_HDR_SESSION_ID, out_session_id);
117 SSVAL(outbody.data, 0x00, 0x08 + 1); /* struct size */
118 SSVAL(outbody.data, 0x02,
119 out_session_flags); /* session flags */
120 SSVAL(outbody.data, 0x04,
121 out_security_offset); /* security buffer offset */
122 SSVAL(outbody.data, 0x06,
123 out_security_buffer.length); /* security buffer length */
125 outdyn = out_security_buffer;
127 return smbd_smb2_request_done_ex(smb2req, status, outbody, &outdyn,
131 static int smbd_smb2_session_destructor(struct smbd_smb2_session *session)
133 if (session->sconn == NULL) {
137 /* first free all tcons */
138 while (session->tcons.list) {
139 talloc_free(session->tcons.list);
142 idr_remove(session->sconn->smb2.sessions.idtree, session->vuid);
143 DLIST_REMOVE(session->sconn->smb2.sessions.list, session);
144 invalidate_vuid(session->sconn, session->vuid);
147 session->status = NT_STATUS_USER_SESSION_DELETED;
148 session->sconn = NULL;
153 static NTSTATUS setup_ntlmssp_session_info(struct smbd_smb2_session *session,
156 if (NT_STATUS_IS_OK(status)) {
157 status = auth_ntlmssp_steal_session_info(session,
158 session->auth_ntlmssp_state,
159 &session->session_info);
161 /* Note that this session_info won't have a session
162 * key. But for map to guest, that's exactly the right
163 * thing - we can't reasonably guess the key the
164 * client wants, as the password was wrong */
165 status = do_map_to_guest(status,
166 &session->session_info,
167 auth_ntlmssp_get_username(session->auth_ntlmssp_state),
168 auth_ntlmssp_get_domain(session->auth_ntlmssp_state));
174 static NTSTATUS smbd_smb2_session_setup_krb5(struct smbd_smb2_session *session,
175 struct smbd_smb2_request *smb2req,
176 uint8_t in_security_mode,
177 const DATA_BLOB *secblob,
179 uint16_t *out_session_flags,
180 DATA_BLOB *out_security_buffer,
181 uint64_t *out_session_id)
183 DATA_BLOB ap_rep = data_blob_null;
184 DATA_BLOB ap_rep_wrapped = data_blob_null;
185 DATA_BLOB ticket = data_blob_null;
186 DATA_BLOB session_key = data_blob_null;
187 DATA_BLOB secblob_out = data_blob_null;
189 struct PAC_LOGON_INFO *logon_info = NULL;
190 char *principal = NULL;
193 struct passwd *pw = NULL;
197 bool username_was_mapped = false;
198 bool map_domainuser_to_guest = false;
200 if (!spnego_parse_krb5_wrap(talloc_tos(), *secblob, &ticket, tok_id)) {
201 status = NT_STATUS_LOGON_FAILURE;
205 status = ads_verify_ticket(smb2req, lp_realm(), 0, &ticket,
206 &principal, &logon_info, &ap_rep,
209 if (!NT_STATUS_IS_OK(status)) {
210 DEBUG(1,("smb2: Failed to verify incoming ticket with error %s!\n",
212 if (!NT_STATUS_EQUAL(status, NT_STATUS_TIME_DIFFERENCE_AT_DC)) {
213 status = NT_STATUS_LOGON_FAILURE;
218 status = get_user_from_kerberos_info(talloc_tos(),
219 session->sconn->remote_hostname,
220 principal, logon_info,
221 &username_was_mapped,
222 &map_domainuser_to_guest,
224 &real_username, &pw);
225 if (!NT_STATUS_IS_OK(status)) {
229 /* save the PAC data if we have it */
231 netsamlogon_cache_store(user, &logon_info->info3);
234 /* setup the string used by %U */
235 sub_set_smb_name(real_username);
237 /* reload services so that the new %U is taken into account */
238 reload_services(smb2req->sconn->msg_ctx, smb2req->sconn->sock, true);
240 status = make_session_info_krb5(session,
241 user, domain, real_username, pw,
242 logon_info, map_domainuser_to_guest,
245 &session->session_info);
246 if (!NT_STATUS_IS_OK(status)) {
247 DEBUG(1, ("smb2: make_server_info_krb5 failed\n"));
251 if ((in_security_mode & SMB2_NEGOTIATE_SIGNING_REQUIRED) ||
252 lp_server_signing() == Required) {
253 session->do_signing = true;
256 if (session->session_info->unix_info->guest) {
257 /* we map anonymous to guest internally */
258 *out_session_flags |= SMB2_SESSION_FLAG_IS_GUEST;
259 *out_session_flags |= SMB2_SESSION_FLAG_IS_NULL;
260 /* force no signing */
261 session->do_signing = false;
264 session->session_key = session->session_info->session_key;
266 session->compat_vuser = talloc_zero(session, user_struct);
267 if (session->compat_vuser == NULL) {
268 status = NT_STATUS_NO_MEMORY;
271 session->compat_vuser->auth_ntlmssp_state = NULL;
272 session->compat_vuser->homes_snum = -1;
273 session->compat_vuser->session_info = session->session_info;
274 session->compat_vuser->session_keystr = NULL;
275 session->compat_vuser->vuid = session->vuid;
276 DLIST_ADD(session->sconn->smb1.sessions.validated_users, session->compat_vuser);
278 /* This is a potentially untrusted username */
279 alpha_strcpy(tmp, user, ". _-$", sizeof(tmp));
280 session->session_info->unix_info->sanitized_username =
281 talloc_strdup(session->session_info, tmp);
283 if (!session->session_info->unix_info->guest) {
284 session->compat_vuser->homes_snum =
285 register_homes_share(session->session_info->unix_info->unix_name);
288 if (!session_claim(session->sconn, session->compat_vuser)) {
289 DEBUG(1, ("smb2: Failed to claim session "
291 session->compat_vuser->vuid));
295 session->status = NT_STATUS_OK;
298 * we attach the session to the request
299 * so that the response can be signed
301 smb2req->session = session;
302 if (session->do_signing) {
303 smb2req->do_signing = true;
306 global_client_caps |= (CAP_LEVEL_II_OPLOCKS|CAP_STATUS32);
307 status = NT_STATUS_OK;
309 /* wrap that up in a nice GSS-API wrapping */
310 ap_rep_wrapped = spnego_gen_krb5_wrap(talloc_tos(), ap_rep,
313 secblob_out = spnego_gen_auth_response(
319 *out_security_buffer = data_blob_talloc(smb2req,
322 if (secblob_out.data && out_security_buffer->data == NULL) {
323 status = NT_STATUS_NO_MEMORY;
327 data_blob_free(&ap_rep);
328 data_blob_free(&ap_rep_wrapped);
329 data_blob_free(&ticket);
330 data_blob_free(&session_key);
331 data_blob_free(&secblob_out);
333 *out_session_id = session->vuid;
339 data_blob_free(&ap_rep);
340 data_blob_free(&ap_rep_wrapped);
341 data_blob_free(&ticket);
342 data_blob_free(&session_key);
343 data_blob_free(&secblob_out);
345 ap_rep_wrapped = data_blob_null;
346 secblob_out = spnego_gen_auth_response(
352 *out_security_buffer = data_blob_talloc(smb2req,
355 data_blob_free(&secblob_out);
360 static NTSTATUS smbd_smb2_spnego_negotiate(struct smbd_smb2_session *session,
361 struct smbd_smb2_request *smb2req,
362 uint8_t in_security_mode,
363 DATA_BLOB in_security_buffer,
364 uint16_t *out_session_flags,
365 DATA_BLOB *out_security_buffer,
366 uint64_t *out_session_id)
368 DATA_BLOB secblob_in = data_blob_null;
369 DATA_BLOB chal_out = data_blob_null;
370 char *kerb_mech = NULL;
373 /* Ensure we have no old NTLM state around. */
374 TALLOC_FREE(session->auth_ntlmssp_state);
376 status = parse_spnego_mechanisms(talloc_tos(), in_security_buffer,
377 &secblob_in, &kerb_mech);
378 if (!NT_STATUS_IS_OK(status)) {
383 if (kerb_mech && ((lp_security()==SEC_ADS) ||
384 USE_KERBEROS_KEYTAB) ) {
385 status = smbd_smb2_session_setup_krb5(session,
399 /* The mechtoken is a krb5 ticket, but
400 * we need to fall back to NTLM. */
402 DEBUG(3,("smb2: Got krb5 ticket in SPNEGO "
403 "but set to downgrade to NTLMSSP\n"));
405 status = NT_STATUS_MORE_PROCESSING_REQUIRED;
407 /* Fall back to NTLMSSP. */
408 status = auth_ntlmssp_start(session->sconn->remote_address,
409 &session->auth_ntlmssp_state);
410 if (!NT_STATUS_IS_OK(status)) {
414 status = auth_ntlmssp_update(session->auth_ntlmssp_state,
419 if (!NT_STATUS_IS_OK(status) &&
420 !NT_STATUS_EQUAL(status,
421 NT_STATUS_MORE_PROCESSING_REQUIRED)) {
425 *out_security_buffer = spnego_gen_auth_response(smb2req,
429 if (out_security_buffer->data == NULL) {
430 status = NT_STATUS_NO_MEMORY;
433 *out_session_id = session->vuid;
437 data_blob_free(&secblob_in);
438 data_blob_free(&chal_out);
439 TALLOC_FREE(kerb_mech);
440 if (!NT_STATUS_IS_OK(status) &&
441 !NT_STATUS_EQUAL(status,
442 NT_STATUS_MORE_PROCESSING_REQUIRED)) {
443 TALLOC_FREE(session->auth_ntlmssp_state);
444 TALLOC_FREE(session);
449 static NTSTATUS smbd_smb2_common_ntlmssp_auth_return(struct smbd_smb2_session *session,
450 struct smbd_smb2_request *smb2req,
451 uint8_t in_security_mode,
452 DATA_BLOB in_security_buffer,
453 uint16_t *out_session_flags,
454 uint64_t *out_session_id)
458 if ((in_security_mode & SMB2_NEGOTIATE_SIGNING_REQUIRED) ||
459 lp_server_signing() == Required) {
460 session->do_signing = true;
463 if (session->session_info->unix_info->guest) {
464 /* we map anonymous to guest internally */
465 *out_session_flags |= SMB2_SESSION_FLAG_IS_GUEST;
466 *out_session_flags |= SMB2_SESSION_FLAG_IS_NULL;
467 /* force no signing */
468 session->do_signing = false;
471 session->session_key = session->session_info->session_key;
473 session->compat_vuser = talloc_zero(session, user_struct);
474 if (session->compat_vuser == NULL) {
475 TALLOC_FREE(session->auth_ntlmssp_state);
476 TALLOC_FREE(session);
477 return NT_STATUS_NO_MEMORY;
479 session->compat_vuser->auth_ntlmssp_state = session->auth_ntlmssp_state;
480 session->compat_vuser->homes_snum = -1;
481 session->compat_vuser->session_info = session->session_info;
482 session->compat_vuser->session_keystr = NULL;
483 session->compat_vuser->vuid = session->vuid;
484 DLIST_ADD(session->sconn->smb1.sessions.validated_users, session->compat_vuser);
486 /* This is a potentially untrusted username */
488 auth_ntlmssp_get_username(session->auth_ntlmssp_state),
491 session->session_info->unix_info->sanitized_username = talloc_strdup(
492 session->session_info, tmp);
494 if (!session->compat_vuser->session_info->unix_info->guest) {
495 session->compat_vuser->homes_snum =
496 register_homes_share(session->session_info->unix_info->unix_name);
499 if (!session_claim(session->sconn, session->compat_vuser)) {
500 DEBUG(1, ("smb2: Failed to claim session "
502 session->compat_vuser->vuid));
503 TALLOC_FREE(session->auth_ntlmssp_state);
504 TALLOC_FREE(session);
505 return NT_STATUS_LOGON_FAILURE;
509 session->status = NT_STATUS_OK;
512 * we attach the session to the request
513 * so that the response can be signed
515 smb2req->session = session;
516 if (session->do_signing) {
517 smb2req->do_signing = true;
520 global_client_caps |= (CAP_LEVEL_II_OPLOCKS|CAP_STATUS32);
522 *out_session_id = session->vuid;
527 static NTSTATUS smbd_smb2_spnego_auth(struct smbd_smb2_session *session,
528 struct smbd_smb2_request *smb2req,
529 uint8_t in_security_mode,
530 DATA_BLOB in_security_buffer,
531 uint16_t *out_session_flags,
532 DATA_BLOB *out_security_buffer,
533 uint64_t *out_session_id)
535 DATA_BLOB auth = data_blob_null;
536 DATA_BLOB auth_out = data_blob_null;
539 if (!spnego_parse_auth(talloc_tos(), in_security_buffer, &auth)) {
540 TALLOC_FREE(session);
541 return NT_STATUS_LOGON_FAILURE;
544 if (auth.data[0] == ASN1_APPLICATION(0)) {
545 /* Might be a second negTokenTarg packet */
546 DATA_BLOB secblob_in = data_blob_null;
547 char *kerb_mech = NULL;
549 status = parse_spnego_mechanisms(talloc_tos(),
551 &secblob_in, &kerb_mech);
552 if (!NT_STATUS_IS_OK(status)) {
553 TALLOC_FREE(session);
558 if (kerb_mech && ((lp_security()==SEC_ADS) ||
559 USE_KERBEROS_KEYTAB) ) {
560 status = smbd_smb2_session_setup_krb5(session,
569 data_blob_free(&secblob_in);
570 TALLOC_FREE(kerb_mech);
571 if (!NT_STATUS_IS_OK(status)) {
572 TALLOC_FREE(session);
578 /* Can't blunder into NTLMSSP auth if we have
582 DEBUG(3,("smb2: network "
583 "misconfiguration, client sent us a "
584 "krb5 ticket and kerberos security "
586 TALLOC_FREE(session);
587 data_blob_free(&secblob_in);
588 TALLOC_FREE(kerb_mech);
589 return NT_STATUS_LOGON_FAILURE;
592 data_blob_free(&secblob_in);
595 if (session->auth_ntlmssp_state == NULL) {
596 status = auth_ntlmssp_start(session->sconn->remote_address,
597 &session->auth_ntlmssp_state);
598 if (!NT_STATUS_IS_OK(status)) {
599 data_blob_free(&auth);
600 TALLOC_FREE(session);
605 status = auth_ntlmssp_update(session->auth_ntlmssp_state,
608 /* We need to call setup_ntlmssp_session_info() if status==NT_STATUS_OK,
609 or if status is anything except NT_STATUS_MORE_PROCESSING_REQUIRED,
610 as this can trigger map to guest. */
611 if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
612 status = setup_ntlmssp_session_info(session, status);
615 if (!NT_STATUS_IS_OK(status) &&
616 !NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
617 TALLOC_FREE(session->auth_ntlmssp_state);
618 data_blob_free(&auth);
619 TALLOC_FREE(session);
623 data_blob_free(&auth);
625 *out_security_buffer = spnego_gen_auth_response(smb2req,
626 &auth_out, status, NULL);
628 if (out_security_buffer->data == NULL) {
629 TALLOC_FREE(session->auth_ntlmssp_state);
630 TALLOC_FREE(session);
631 return NT_STATUS_NO_MEMORY;
634 *out_session_id = session->vuid;
636 if (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
637 return NT_STATUS_MORE_PROCESSING_REQUIRED;
640 /* We're done - claim the session. */
641 return smbd_smb2_common_ntlmssp_auth_return(session,
649 static NTSTATUS smbd_smb2_raw_ntlmssp_auth(struct smbd_smb2_session *session,
650 struct smbd_smb2_request *smb2req,
651 uint8_t in_security_mode,
652 DATA_BLOB in_security_buffer,
653 uint16_t *out_session_flags,
654 DATA_BLOB *out_security_buffer,
655 uint64_t *out_session_id)
658 DATA_BLOB secblob_out = data_blob_null;
660 if (session->auth_ntlmssp_state == NULL) {
661 status = auth_ntlmssp_start(session->sconn->remote_address,
662 &session->auth_ntlmssp_state);
663 if (!NT_STATUS_IS_OK(status)) {
664 TALLOC_FREE(session);
670 status = auth_ntlmssp_update(session->auth_ntlmssp_state,
674 if (NT_STATUS_IS_OK(status) ||
675 NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
676 *out_security_buffer = data_blob_talloc(smb2req,
679 if (secblob_out.data && out_security_buffer->data == NULL) {
680 TALLOC_FREE(session->auth_ntlmssp_state);
681 TALLOC_FREE(session);
682 return NT_STATUS_NO_MEMORY;
686 if (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
687 *out_session_id = session->vuid;
691 status = setup_ntlmssp_session_info(session, status);
693 if (!NT_STATUS_IS_OK(status)) {
694 TALLOC_FREE(session->auth_ntlmssp_state);
695 TALLOC_FREE(session);
698 *out_session_id = session->vuid;
700 return smbd_smb2_common_ntlmssp_auth_return(session,
708 static NTSTATUS smbd_smb2_session_setup(struct smbd_smb2_request *smb2req,
709 uint64_t in_session_id,
710 uint8_t in_security_mode,
711 DATA_BLOB in_security_buffer,
712 uint16_t *out_session_flags,
713 DATA_BLOB *out_security_buffer,
714 uint64_t *out_session_id)
716 struct smbd_smb2_session *session;
718 *out_session_flags = 0;
721 if (in_session_id == 0) {
724 /* create a new session */
725 session = talloc_zero(smb2req->sconn, struct smbd_smb2_session);
726 if (session == NULL) {
727 return NT_STATUS_NO_MEMORY;
729 session->status = NT_STATUS_MORE_PROCESSING_REQUIRED;
730 id = idr_get_new_random(smb2req->sconn->smb2.sessions.idtree,
732 smb2req->sconn->smb2.sessions.limit);
734 return NT_STATUS_INSUFFICIENT_RESOURCES;
738 session->tcons.idtree = idr_init(session);
739 if (session->tcons.idtree == NULL) {
740 return NT_STATUS_NO_MEMORY;
742 session->tcons.limit = 0x0000FFFE;
743 session->tcons.list = NULL;
745 DLIST_ADD_END(smb2req->sconn->smb2.sessions.list, session,
746 struct smbd_smb2_session *);
747 session->sconn = smb2req->sconn;
748 talloc_set_destructor(session, smbd_smb2_session_destructor);
752 /* lookup an existing session */
753 p = idr_find(smb2req->sconn->smb2.sessions.idtree, in_session_id);
755 return NT_STATUS_USER_SESSION_DELETED;
757 session = talloc_get_type_abort(p, struct smbd_smb2_session);
760 if (NT_STATUS_IS_OK(session->status)) {
761 return NT_STATUS_REQUEST_NOT_ACCEPTED;
764 if (in_security_buffer.data[0] == ASN1_APPLICATION(0)) {
765 return smbd_smb2_spnego_negotiate(session,
772 } else if (in_security_buffer.data[0] == ASN1_CONTEXT(1)) {
773 return smbd_smb2_spnego_auth(session,
780 } else if (strncmp((char *)(in_security_buffer.data), "NTLMSSP", 7) == 0) {
781 return smbd_smb2_raw_ntlmssp_auth(session,
790 /* Unknown packet type. */
791 DEBUG(1,("Unknown packet type %u in smb2 sessionsetup\n",
792 (unsigned int)in_security_buffer.data[0] ));
793 TALLOC_FREE(session->auth_ntlmssp_state);
794 TALLOC_FREE(session);
795 return NT_STATUS_LOGON_FAILURE;
798 NTSTATUS smbd_smb2_request_process_logoff(struct smbd_smb2_request *req)
800 const uint8_t *inbody;
801 int i = req->current_idx;
803 size_t expected_body_size = 0x04;
806 if (req->in.vector[i+1].iov_len != (expected_body_size & 0xFFFFFFFE)) {
807 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
810 inbody = (const uint8_t *)req->in.vector[i+1].iov_base;
812 body_size = SVAL(inbody, 0x00);
813 if (body_size != expected_body_size) {
814 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
818 * TODO: cancel all outstanding requests on the session
819 * and delete all tree connections.
821 smbd_smb2_session_destructor(req->session);
823 * we may need to sign the response, so we need to keep
824 * the session until the response is sent to the wire.
826 talloc_steal(req, req->session);
828 outbody = data_blob_talloc(req->out.vector, NULL, 0x04);
829 if (outbody.data == NULL) {
830 return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
833 SSVAL(outbody.data, 0x00, 0x04); /* struct size */
834 SSVAL(outbody.data, 0x02, 0); /* reserved */
836 return smbd_smb2_request_done(req, outbody, NULL);