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 "../auth/gensec/gensec.h"
28 #include "../lib/tsocket/tsocket.h"
29 #include "../libcli/security/security.h"
30 #include "../lib/util/tevent_ntstatus.h"
32 static struct tevent_req
*smbd_smb2_session_setup_send(TALLOC_CTX
*mem_ctx
,
33 struct tevent_context
*ev
,
34 struct smbd_smb2_request
*smb2req
,
35 uint64_t in_session_id
,
37 uint8_t in_security_mode
,
38 uint64_t in_previous_session_id
,
39 DATA_BLOB in_security_buffer
);
40 static NTSTATUS
smbd_smb2_session_setup_recv(struct tevent_req
*req
,
41 uint16_t *out_session_flags
,
43 DATA_BLOB
*out_security_buffer
,
44 uint64_t *out_session_id
);
46 static void smbd_smb2_request_sesssetup_done(struct tevent_req
*subreq
);
48 NTSTATUS
smbd_smb2_request_process_sesssetup(struct smbd_smb2_request
*smb2req
)
51 const uint8_t *inbody
;
52 uint64_t in_session_id
;
54 uint8_t in_security_mode
;
55 uint64_t in_previous_session_id
;
56 uint16_t in_security_offset
;
57 uint16_t in_security_length
;
58 DATA_BLOB in_security_buffer
;
60 struct tevent_req
*subreq
;
62 status
= smbd_smb2_request_verify_sizes(smb2req
, 0x19);
63 if (!NT_STATUS_IS_OK(status
)) {
64 return smbd_smb2_request_error(smb2req
, status
);
66 inhdr
= SMBD_SMB2_IN_HDR_PTR(smb2req
);
67 inbody
= SMBD_SMB2_IN_BODY_PTR(smb2req
);
69 in_session_id
= BVAL(inhdr
, SMB2_HDR_SESSION_ID
);
71 in_flags
= CVAL(inbody
, 0x02);
72 in_security_mode
= CVAL(inbody
, 0x03);
73 /* Capabilities = IVAL(inbody, 0x04) */
74 /* Channel = IVAL(inbody, 0x08) */
75 in_security_offset
= SVAL(inbody
, 0x0C);
76 in_security_length
= SVAL(inbody
, 0x0E);
77 in_previous_session_id
= BVAL(inbody
, 0x10);
79 if (in_security_offset
!= (SMB2_HDR_BODY
+ SMBD_SMB2_IN_BODY_LEN(smb2req
))) {
80 return smbd_smb2_request_error(smb2req
, NT_STATUS_INVALID_PARAMETER
);
83 if (in_security_length
> SMBD_SMB2_IN_DYN_LEN(smb2req
)) {
84 return smbd_smb2_request_error(smb2req
, NT_STATUS_INVALID_PARAMETER
);
87 in_security_buffer
.data
= SMBD_SMB2_IN_DYN_PTR(smb2req
);
88 in_security_buffer
.length
= in_security_length
;
90 subreq
= smbd_smb2_session_setup_send(smb2req
,
91 smb2req
->sconn
->ev_ctx
,
96 in_previous_session_id
,
99 return smbd_smb2_request_error(smb2req
, NT_STATUS_NO_MEMORY
);
101 tevent_req_set_callback(subreq
, smbd_smb2_request_sesssetup_done
, smb2req
);
103 return smbd_smb2_request_pending_queue(smb2req
, subreq
, 500);
106 static void smbd_smb2_request_sesssetup_done(struct tevent_req
*subreq
)
108 struct smbd_smb2_request
*smb2req
=
109 tevent_req_callback_data(subreq
,
110 struct smbd_smb2_request
);
114 uint16_t out_session_flags
= 0;
115 uint64_t out_session_id
= 0;
116 uint16_t out_security_offset
;
117 DATA_BLOB out_security_buffer
= data_blob_null
;
119 NTSTATUS error
; /* transport error */
121 status
= smbd_smb2_session_setup_recv(subreq
,
124 &out_security_buffer
,
127 if (!NT_STATUS_IS_OK(status
) &&
128 !NT_STATUS_EQUAL(status
, NT_STATUS_MORE_PROCESSING_REQUIRED
)) {
129 status
= nt_status_squash(status
);
130 error
= smbd_smb2_request_error(smb2req
, status
);
131 if (!NT_STATUS_IS_OK(error
)) {
132 smbd_server_connection_terminate(smb2req
->xconn
,
139 out_security_offset
= SMB2_HDR_BODY
+ 0x08;
141 outhdr
= SMBD_SMB2_OUT_HDR_PTR(smb2req
);
143 outbody
= smbd_smb2_generate_outbody(smb2req
, 0x08);
144 if (outbody
.data
== NULL
) {
145 error
= smbd_smb2_request_error(smb2req
, NT_STATUS_NO_MEMORY
);
146 if (!NT_STATUS_IS_OK(error
)) {
147 smbd_server_connection_terminate(smb2req
->xconn
,
154 SBVAL(outhdr
, SMB2_HDR_SESSION_ID
, out_session_id
);
156 SSVAL(outbody
.data
, 0x00, 0x08 + 1); /* struct size */
157 SSVAL(outbody
.data
, 0x02,
158 out_session_flags
); /* session flags */
159 SSVAL(outbody
.data
, 0x04,
160 out_security_offset
); /* security buffer offset */
161 SSVAL(outbody
.data
, 0x06,
162 out_security_buffer
.length
); /* security buffer length */
164 outdyn
= out_security_buffer
;
166 error
= smbd_smb2_request_done_ex(smb2req
, status
, outbody
, &outdyn
,
168 if (!NT_STATUS_IS_OK(error
)) {
169 smbd_server_connection_terminate(smb2req
->xconn
,
175 static NTSTATUS
smbd_smb2_auth_generic_return(struct smbXsrv_session
*session
,
176 struct smbd_smb2_request
*smb2req
,
177 uint8_t in_security_mode
,
178 struct auth_session_info
*session_info
,
179 uint16_t *out_session_flags
,
180 uint64_t *out_session_id
)
184 uint8_t session_key
[16];
185 struct smbXsrv_session
*x
= session
;
186 struct smbXsrv_connection
*xconn
= smb2req
->xconn
;
188 if ((in_security_mode
& SMB2_NEGOTIATE_SIGNING_REQUIRED
) ||
189 lp_server_signing() == SMB_SIGNING_REQUIRED
) {
190 x
->global
->signing_required
= true;
193 if (lp_smb_encrypt(-1) == SMB_SIGNING_REQUIRED
) {
194 x
->global
->encryption_required
= true;
197 if (security_session_user_level(session_info
, NULL
) < SECURITY_USER
) {
198 /* we map anonymous to guest internally */
199 *out_session_flags
|= SMB2_SESSION_FLAG_IS_GUEST
;
200 *out_session_flags
|= SMB2_SESSION_FLAG_IS_NULL
;
201 /* force no signing */
202 x
->global
->signing_required
= false;
206 if (guest
&& x
->global
->encryption_required
) {
207 DEBUG(1,("reject guest session as encryption is required\n"));
208 return NT_STATUS_ACCESS_DENIED
;
211 if (!(xconn
->smb2
.server
.capabilities
& SMB2_CAP_ENCRYPTION
)) {
212 if (x
->global
->encryption_required
) {
213 DEBUG(1,("reject session with dialect[0x%04X] "
214 "as encryption is required\n",
215 xconn
->smb2
.server
.dialect
));
216 return NT_STATUS_ACCESS_DENIED
;
220 if (x
->global
->encryption_required
) {
221 *out_session_flags
|= SMB2_SESSION_FLAG_ENCRYPT_DATA
;
224 ZERO_STRUCT(session_key
);
225 memcpy(session_key
, session_info
->session_key
.data
,
226 MIN(session_info
->session_key
.length
, sizeof(session_key
)));
228 x
->global
->signing_key
= data_blob_talloc(x
->global
,
230 sizeof(session_key
));
231 if (x
->global
->signing_key
.data
== NULL
) {
232 ZERO_STRUCT(session_key
);
233 return NT_STATUS_NO_MEMORY
;
236 if (xconn
->protocol
>= PROTOCOL_SMB2_24
) {
237 const DATA_BLOB label
= data_blob_string_const_null("SMB2AESCMAC");
238 const DATA_BLOB context
= data_blob_string_const_null("SmbSign");
240 smb2_key_derivation(session_key
, sizeof(session_key
),
241 label
.data
, label
.length
,
242 context
.data
, context
.length
,
243 x
->global
->signing_key
.data
);
246 if (xconn
->protocol
>= PROTOCOL_SMB2_24
) {
247 const DATA_BLOB label
= data_blob_string_const_null("SMB2AESCCM");
248 const DATA_BLOB context
= data_blob_string_const_null("ServerIn ");
250 x
->global
->decryption_key
= data_blob_talloc(x
->global
,
252 sizeof(session_key
));
253 if (x
->global
->decryption_key
.data
== NULL
) {
254 ZERO_STRUCT(session_key
);
255 return NT_STATUS_NO_MEMORY
;
258 smb2_key_derivation(session_key
, sizeof(session_key
),
259 label
.data
, label
.length
,
260 context
.data
, context
.length
,
261 x
->global
->decryption_key
.data
);
264 if (xconn
->protocol
>= PROTOCOL_SMB2_24
) {
265 const DATA_BLOB label
= data_blob_string_const_null("SMB2AESCCM");
266 const DATA_BLOB context
= data_blob_string_const_null("ServerOut");
268 x
->global
->encryption_key
= data_blob_talloc(x
->global
,
270 sizeof(session_key
));
271 if (x
->global
->encryption_key
.data
== NULL
) {
272 ZERO_STRUCT(session_key
);
273 return NT_STATUS_NO_MEMORY
;
276 smb2_key_derivation(session_key
, sizeof(session_key
),
277 label
.data
, label
.length
,
278 context
.data
, context
.length
,
279 x
->global
->encryption_key
.data
);
281 generate_random_buffer((uint8_t *)&x
->nonce_high
, sizeof(x
->nonce_high
));
285 x
->global
->application_key
= data_blob_dup_talloc(x
->global
,
286 x
->global
->signing_key
);
287 if (x
->global
->application_key
.data
== NULL
) {
288 ZERO_STRUCT(session_key
);
289 return NT_STATUS_NO_MEMORY
;
292 if (xconn
->protocol
>= PROTOCOL_SMB2_24
) {
293 const DATA_BLOB label
= data_blob_string_const_null("SMB2APP");
294 const DATA_BLOB context
= data_blob_string_const_null("SmbRpc");
296 smb2_key_derivation(session_key
, sizeof(session_key
),
297 label
.data
, label
.length
,
298 context
.data
, context
.length
,
299 x
->global
->application_key
.data
);
301 ZERO_STRUCT(session_key
);
303 x
->global
->channels
[0].signing_key
= data_blob_dup_talloc(x
->global
->channels
,
304 x
->global
->signing_key
);
305 if (x
->global
->channels
[0].signing_key
.data
== NULL
) {
306 return NT_STATUS_NO_MEMORY
;
309 data_blob_clear_free(&session_info
->session_key
);
310 session_info
->session_key
= data_blob_dup_talloc(session_info
,
311 x
->global
->application_key
);
312 if (session_info
->session_key
.data
== NULL
) {
313 return NT_STATUS_NO_MEMORY
;
316 session
->compat
= talloc_zero(session
, struct user_struct
);
317 if (session
->compat
== NULL
) {
318 return NT_STATUS_NO_MEMORY
;
320 session
->compat
->session
= session
;
321 session
->compat
->homes_snum
= -1;
322 session
->compat
->session_info
= session_info
;
323 session
->compat
->session_keystr
= NULL
;
324 session
->compat
->vuid
= session
->global
->session_wire_id
;
325 DLIST_ADD(smb2req
->sconn
->users
, session
->compat
);
326 smb2req
->sconn
->num_users
++;
328 if (security_session_user_level(session_info
, NULL
) >= SECURITY_USER
) {
329 session
->compat
->homes_snum
=
330 register_homes_share(session_info
->unix_info
->unix_name
);
333 set_current_user_info(session_info
->unix_info
->sanitized_username
,
334 session_info
->unix_info
->unix_name
,
335 session_info
->info
->domain_name
);
337 reload_services(smb2req
->sconn
, conn_snum_used
, true);
339 session
->status
= NT_STATUS_OK
;
340 session
->global
->auth_session_info
= session_info
;
341 session
->global
->auth_session_info_seqnum
+= 1;
342 session
->global
->channels
[0].auth_session_info_seqnum
=
343 session
->global
->auth_session_info_seqnum
;
344 session
->global
->auth_time
= timeval_to_nttime(&smb2req
->request_time
);
345 session
->global
->expiration_time
= gensec_expire_time(session
->gensec
);
347 if (!session_claim(session
)) {
348 DEBUG(1, ("smb2: Failed to claim session "
350 (unsigned long long)session
->compat
->vuid
));
351 return NT_STATUS_LOGON_FAILURE
;
354 status
= smbXsrv_session_update(session
);
355 if (!NT_STATUS_IS_OK(status
)) {
356 DEBUG(0, ("smb2: Failed to update session for vuid=%llu - %s\n",
357 (unsigned long long)session
->compat
->vuid
,
359 return NT_STATUS_LOGON_FAILURE
;
363 * we attach the session to the request
364 * so that the response can be signed
366 smb2req
->session
= session
;
368 smb2req
->do_signing
= true;
371 global_client_caps
|= (CAP_LEVEL_II_OPLOCKS
|CAP_STATUS32
);
373 *out_session_id
= session
->global
->session_wire_id
;
378 static NTSTATUS
smbd_smb2_reauth_generic_return(struct smbXsrv_session
*session
,
379 struct smbd_smb2_request
*smb2req
,
380 struct auth_session_info
*session_info
,
381 uint16_t *out_session_flags
,
382 uint64_t *out_session_id
)
385 struct smbXsrv_session
*x
= session
;
386 struct smbXsrv_connection
*xconn
= smb2req
->xconn
;
388 data_blob_clear_free(&session_info
->session_key
);
389 session_info
->session_key
= data_blob_dup_talloc(session_info
,
390 x
->global
->application_key
);
391 if (session_info
->session_key
.data
== NULL
) {
392 return NT_STATUS_NO_MEMORY
;
395 session
->compat
->session_info
= session_info
;
396 session
->compat
->vuid
= session
->global
->session_wire_id
;
398 session
->compat
->homes_snum
=
399 register_homes_share(session_info
->unix_info
->unix_name
);
401 set_current_user_info(session_info
->unix_info
->sanitized_username
,
402 session_info
->unix_info
->unix_name
,
403 session_info
->info
->domain_name
);
405 reload_services(smb2req
->sconn
, conn_snum_used
, true);
407 session
->status
= NT_STATUS_OK
;
408 TALLOC_FREE(session
->global
->auth_session_info
);
409 session
->global
->auth_session_info
= session_info
;
410 session
->global
->auth_session_info_seqnum
+= 1;
411 session
->global
->channels
[0].auth_session_info_seqnum
=
412 session
->global
->auth_session_info_seqnum
;
413 session
->global
->auth_time
= timeval_to_nttime(&smb2req
->request_time
);
414 session
->global
->expiration_time
= gensec_expire_time(session
->gensec
);
416 status
= smbXsrv_session_update(session
);
417 if (!NT_STATUS_IS_OK(status
)) {
418 DEBUG(0, ("smb2: Failed to update session for vuid=%llu - %s\n",
419 (unsigned long long)session
->compat
->vuid
,
421 return NT_STATUS_LOGON_FAILURE
;
424 conn_clear_vuid_caches(xconn
->sconn
, session
->compat
->vuid
);
426 *out_session_id
= session
->global
->session_wire_id
;
431 struct smbd_smb2_session_setup_state
{
432 struct tevent_context
*ev
;
433 struct smbd_smb2_request
*smb2req
;
434 uint64_t in_session_id
;
436 uint8_t in_security_mode
;
437 uint64_t in_previous_session_id
;
438 DATA_BLOB in_security_buffer
;
439 struct smbXsrv_session
*session
;
440 struct auth_session_info
*session_info
;
441 uint16_t out_session_flags
;
442 DATA_BLOB out_security_buffer
;
443 uint64_t out_session_id
;
444 /* The following pointer is owned by state->session. */
445 struct smbd_smb2_session_setup_state
**pp_self_ref
;
448 static int pp_self_ref_destructor(struct smbd_smb2_session_setup_state
**pp_state
)
450 (*pp_state
)->session
= NULL
;
452 * To make things clearer, ensure the pp_self_ref
453 * pointer is nulled out. We're never going to
456 (*pp_state
)->pp_self_ref
= NULL
;
460 static int smbd_smb2_session_setup_state_destructor(struct smbd_smb2_session_setup_state
*state
)
462 struct smbXsrv_connection
*xconn
;
463 struct smbd_smb2_request
*preq
;
466 * If state->session is not NULL,
467 * we move the session from the session table to the request on failure
468 * so that the error response can be correctly signed, but the session
469 * is then really deleted when the request is done.
472 if (state
->session
== NULL
) {
476 state
->session
->status
= NT_STATUS_USER_SESSION_DELETED
;
477 state
->smb2req
->session
= talloc_move(state
->smb2req
, &state
->session
);
480 * We've made this session owned by the current request.
481 * Ensure that any outstanding requests don't also refer
484 xconn
= state
->smb2req
->xconn
;
486 for (preq
= xconn
->smb2
.requests
; preq
!= NULL
; preq
= preq
->next
) {
487 if (preq
== state
->smb2req
) {
490 if (preq
->session
== state
->smb2req
->session
) {
491 preq
->session
= NULL
;
493 * If we no longer have a session we can't
494 * sign or encrypt replies.
496 preq
->do_signing
= false;
497 preq
->do_encryption
= false;
504 static void smbd_smb2_session_setup_gensec_done(struct tevent_req
*subreq
);
505 static void smbd_smb2_session_setup_previous_done(struct tevent_req
*subreq
);
506 static void smbd_smb2_session_setup_auth_return(struct tevent_req
*req
);
508 /************************************************************************
509 We have to tag the state->session pointer with memory talloc'ed
510 on it to ensure it gets NULL'ed out if the underlying struct smbXsrv_session
511 is deleted by shutdown whilst this request is in flight.
512 ************************************************************************/
514 static NTSTATUS
tag_state_session_ptr(struct smbd_smb2_session_setup_state
*state
)
516 state
->pp_self_ref
= talloc_zero(state
->session
,
517 struct smbd_smb2_session_setup_state
*);
518 if (state
->pp_self_ref
== NULL
) {
519 return NT_STATUS_NO_MEMORY
;
521 *state
->pp_self_ref
= state
;
522 talloc_set_destructor(state
->pp_self_ref
, pp_self_ref_destructor
);
526 static struct tevent_req
*smbd_smb2_session_setup_send(TALLOC_CTX
*mem_ctx
,
527 struct tevent_context
*ev
,
528 struct smbd_smb2_request
*smb2req
,
529 uint64_t in_session_id
,
531 uint8_t in_security_mode
,
532 uint64_t in_previous_session_id
,
533 DATA_BLOB in_security_buffer
)
535 struct tevent_req
*req
;
536 struct smbd_smb2_session_setup_state
*state
;
538 NTTIME now
= timeval_to_nttime(&smb2req
->request_time
);
539 struct tevent_req
*subreq
;
541 req
= tevent_req_create(mem_ctx
, &state
,
542 struct smbd_smb2_session_setup_state
);
547 state
->smb2req
= smb2req
;
548 state
->in_session_id
= in_session_id
;
549 state
->in_flags
= in_flags
;
550 state
->in_security_mode
= in_security_mode
;
551 state
->in_previous_session_id
= in_previous_session_id
;
552 state
->in_security_buffer
= in_security_buffer
;
554 if (in_flags
& SMB2_SESSION_FLAG_BINDING
) {
555 if (smb2req
->xconn
->protocol
< PROTOCOL_SMB2_22
) {
556 tevent_req_nterror(req
, NT_STATUS_REQUEST_NOT_ACCEPTED
);
557 return tevent_req_post(req
, ev
);
561 * We do not support multi channel.
563 tevent_req_nterror(req
, NT_STATUS_NOT_SUPPORTED
);
564 return tevent_req_post(req
, ev
);
567 talloc_set_destructor(state
, smbd_smb2_session_setup_state_destructor
);
569 if (state
->in_session_id
== 0) {
570 /* create a new session */
571 status
= smbXsrv_session_create(state
->smb2req
->xconn
,
572 now
, &state
->session
);
573 if (tevent_req_nterror(req
, status
)) {
574 return tevent_req_post(req
, ev
);
577 status
= smb2srv_session_lookup(state
->smb2req
->xconn
,
578 state
->in_session_id
, now
,
580 if (NT_STATUS_EQUAL(status
, NT_STATUS_NETWORK_SESSION_EXPIRED
)) {
581 status
= NT_STATUS_OK
;
583 if (NT_STATUS_IS_OK(status
)) {
584 state
->session
->status
= NT_STATUS_MORE_PROCESSING_REQUIRED
;
585 status
= NT_STATUS_MORE_PROCESSING_REQUIRED
;
586 TALLOC_FREE(state
->session
->gensec
);
588 if (!NT_STATUS_EQUAL(status
, NT_STATUS_MORE_PROCESSING_REQUIRED
)) {
589 tevent_req_nterror(req
, status
);
590 return tevent_req_post(req
, ev
);
594 status
= tag_state_session_ptr(state
);
595 if (tevent_req_nterror(req
, status
)) {
596 return tevent_req_post(req
, ev
);
599 if (state
->session
->gensec
== NULL
) {
600 status
= auth_generic_prepare(state
->session
,
601 state
->smb2req
->xconn
->remote_address
,
602 &state
->session
->gensec
);
603 if (tevent_req_nterror(req
, status
)) {
604 return tevent_req_post(req
, ev
);
607 gensec_want_feature(state
->session
->gensec
, GENSEC_FEATURE_SESSION_KEY
);
608 gensec_want_feature(state
->session
->gensec
, GENSEC_FEATURE_UNIX_TOKEN
);
610 status
= gensec_start_mech_by_oid(state
->session
->gensec
,
612 if (tevent_req_nterror(req
, status
)) {
613 return tevent_req_post(req
, ev
);
618 subreq
= gensec_update_send(state
, state
->ev
,
619 state
->session
->gensec
,
620 state
->in_security_buffer
);
622 if (tevent_req_nomem(subreq
, req
)) {
623 return tevent_req_post(req
, ev
);
625 tevent_req_set_callback(subreq
, smbd_smb2_session_setup_gensec_done
, req
);
630 static void smbd_smb2_session_setup_gensec_done(struct tevent_req
*subreq
)
632 struct tevent_req
*req
=
633 tevent_req_callback_data(subreq
,
635 struct smbd_smb2_session_setup_state
*state
=
637 struct smbd_smb2_session_setup_state
);
641 status
= gensec_update_recv(subreq
, state
,
642 &state
->out_security_buffer
);
645 if (!NT_STATUS_EQUAL(status
, NT_STATUS_MORE_PROCESSING_REQUIRED
) &&
646 !NT_STATUS_IS_OK(status
)) {
647 tevent_req_nterror(req
, status
);
651 if (NT_STATUS_EQUAL(status
, NT_STATUS_MORE_PROCESSING_REQUIRED
)) {
652 state
->out_session_id
= state
->session
->global
->session_wire_id
;
653 /* we want to keep the session */
654 state
->session
= NULL
;
655 TALLOC_FREE(state
->pp_self_ref
);
656 tevent_req_nterror(req
, status
);
660 status
= gensec_session_info(state
->session
->gensec
,
661 state
->session
->global
,
662 &state
->session_info
);
663 if (tevent_req_nterror(req
, status
)) {
667 if ((state
->in_previous_session_id
!= 0) &&
668 (state
->session
->global
->session_wire_id
!=
669 state
->in_previous_session_id
))
671 subreq
= smb2srv_session_close_previous_send(state
, state
->ev
,
672 state
->smb2req
->xconn
,
674 state
->in_previous_session_id
,
675 state
->session
->global
->session_wire_id
);
676 if (tevent_req_nomem(subreq
, req
)) {
679 tevent_req_set_callback(subreq
,
680 smbd_smb2_session_setup_previous_done
,
685 smbd_smb2_session_setup_auth_return(req
);
688 static void smbd_smb2_session_setup_previous_done(struct tevent_req
*subreq
)
690 struct tevent_req
*req
=
691 tevent_req_callback_data(subreq
,
695 status
= smb2srv_session_close_previous_recv(subreq
);
697 if (tevent_req_nterror(req
, status
)) {
701 smbd_smb2_session_setup_auth_return(req
);
704 static void smbd_smb2_session_setup_auth_return(struct tevent_req
*req
)
706 struct smbd_smb2_session_setup_state
*state
=
708 struct smbd_smb2_session_setup_state
);
711 if (state
->session
->global
->auth_session_info
!= NULL
) {
712 status
= smbd_smb2_reauth_generic_return(state
->session
,
715 &state
->out_session_flags
,
716 &state
->out_session_id
);
717 if (tevent_req_nterror(req
, status
)) {
720 /* we want to keep the session */
721 state
->session
= NULL
;
722 TALLOC_FREE(state
->pp_self_ref
);
723 tevent_req_done(req
);
727 status
= smbd_smb2_auth_generic_return(state
->session
,
729 state
->in_security_mode
,
731 &state
->out_session_flags
,
732 &state
->out_session_id
);
733 if (tevent_req_nterror(req
, status
)) {
737 /* we want to keep the session */
738 state
->session
= NULL
;
739 TALLOC_FREE(state
->pp_self_ref
);
740 tevent_req_done(req
);
744 static NTSTATUS
smbd_smb2_session_setup_recv(struct tevent_req
*req
,
745 uint16_t *out_session_flags
,
747 DATA_BLOB
*out_security_buffer
,
748 uint64_t *out_session_id
)
750 struct smbd_smb2_session_setup_state
*state
=
752 struct smbd_smb2_session_setup_state
);
755 if (tevent_req_is_nterror(req
, &status
)) {
756 if (!NT_STATUS_EQUAL(status
, NT_STATUS_MORE_PROCESSING_REQUIRED
)) {
757 tevent_req_received(req
);
758 return nt_status_squash(status
);
761 status
= NT_STATUS_OK
;
764 *out_session_flags
= state
->out_session_flags
;
765 *out_security_buffer
= state
->out_security_buffer
;
766 *out_session_id
= state
->out_session_id
;
768 talloc_steal(mem_ctx
, out_security_buffer
->data
);
769 tevent_req_received(req
);
773 static struct tevent_req
*smbd_smb2_logoff_send(TALLOC_CTX
*mem_ctx
,
774 struct tevent_context
*ev
,
775 struct smbd_smb2_request
*smb2req
);
776 static NTSTATUS
smbd_smb2_logoff_recv(struct tevent_req
*req
);
777 static void smbd_smb2_request_logoff_done(struct tevent_req
*subreq
);
779 NTSTATUS
smbd_smb2_request_process_logoff(struct smbd_smb2_request
*req
)
782 struct tevent_req
*subreq
= NULL
;
784 status
= smbd_smb2_request_verify_sizes(req
, 0x04);
785 if (!NT_STATUS_IS_OK(status
)) {
786 return smbd_smb2_request_error(req
, status
);
789 subreq
= smbd_smb2_logoff_send(req
, req
->sconn
->ev_ctx
, req
);
790 if (subreq
== NULL
) {
791 return smbd_smb2_request_error(req
, NT_STATUS_NO_MEMORY
);
793 tevent_req_set_callback(subreq
, smbd_smb2_request_logoff_done
, req
);
796 * Wait a long time before going async on this to allow
797 * requests we're waiting on to finish. Set timeout to 10 secs.
799 return smbd_smb2_request_pending_queue(req
, subreq
, 10000000);
802 static void smbd_smb2_request_logoff_done(struct tevent_req
*subreq
)
804 struct smbd_smb2_request
*smb2req
=
805 tevent_req_callback_data(subreq
,
806 struct smbd_smb2_request
);
811 status
= smbd_smb2_logoff_recv(subreq
);
813 if (!NT_STATUS_IS_OK(status
)) {
814 error
= smbd_smb2_request_error(smb2req
, status
);
815 if (!NT_STATUS_IS_OK(error
)) {
816 smbd_server_connection_terminate(smb2req
->xconn
,
823 outbody
= smbd_smb2_generate_outbody(smb2req
, 0x04);
824 if (outbody
.data
== NULL
) {
825 error
= smbd_smb2_request_error(smb2req
, NT_STATUS_NO_MEMORY
);
826 if (!NT_STATUS_IS_OK(error
)) {
827 smbd_server_connection_terminate(smb2req
->xconn
,
834 SSVAL(outbody
.data
, 0x00, 0x04); /* struct size */
835 SSVAL(outbody
.data
, 0x02, 0); /* reserved */
837 error
= smbd_smb2_request_done(smb2req
, outbody
, NULL
);
838 if (!NT_STATUS_IS_OK(error
)) {
839 smbd_server_connection_terminate(smb2req
->xconn
,
845 struct smbd_smb2_logout_state
{
846 struct smbd_smb2_request
*smb2req
;
847 struct tevent_queue
*wait_queue
;
850 static void smbd_smb2_logoff_wait_done(struct tevent_req
*subreq
);
852 static struct tevent_req
*smbd_smb2_logoff_send(TALLOC_CTX
*mem_ctx
,
853 struct tevent_context
*ev
,
854 struct smbd_smb2_request
*smb2req
)
856 struct tevent_req
*req
;
857 struct smbd_smb2_logout_state
*state
;
858 struct tevent_req
*subreq
;
859 struct smbd_smb2_request
*preq
;
860 struct smbXsrv_connection
*xconn
= smb2req
->xconn
;
862 req
= tevent_req_create(mem_ctx
, &state
,
863 struct smbd_smb2_logout_state
);
867 state
->smb2req
= smb2req
;
869 state
->wait_queue
= tevent_queue_create(state
, "logoff_wait_queue");
870 if (tevent_req_nomem(state
->wait_queue
, req
)) {
871 return tevent_req_post(req
, ev
);
875 * Make sure that no new request will be able to use this session.
877 smb2req
->session
->status
= NT_STATUS_USER_SESSION_DELETED
;
879 for (preq
= xconn
->smb2
.requests
; preq
!= NULL
; preq
= preq
->next
) {
880 if (preq
== smb2req
) {
881 /* Can't cancel current request. */
884 if (preq
->session
!= smb2req
->session
) {
885 /* Request on different session. */
890 * Never cancel anything in a compound
891 * request. Way too hard to deal with
894 if (!preq
->compound_related
&& preq
->subreq
!= NULL
) {
895 tevent_req_cancel(preq
->subreq
);
899 * Now wait until the request is finished.
901 * We don't set a callback, as we just want to block the
902 * wait queue and the talloc_free() of the request will
903 * remove the item from the wait queue.
905 subreq
= tevent_queue_wait_send(preq
, ev
, state
->wait_queue
);
906 if (tevent_req_nomem(subreq
, req
)) {
907 return tevent_req_post(req
, ev
);
912 * Now we add our own waiter to the end of the queue,
913 * this way we get notified when all pending requests are finished
914 * and send to the socket.
916 subreq
= tevent_queue_wait_send(state
, ev
, state
->wait_queue
);
917 if (tevent_req_nomem(subreq
, req
)) {
918 return tevent_req_post(req
, ev
);
920 tevent_req_set_callback(subreq
, smbd_smb2_logoff_wait_done
, req
);
925 static void smbd_smb2_logoff_wait_done(struct tevent_req
*subreq
)
927 struct tevent_req
*req
= tevent_req_callback_data(
928 subreq
, struct tevent_req
);
929 struct smbd_smb2_logout_state
*state
= tevent_req_data(
930 req
, struct smbd_smb2_logout_state
);
933 tevent_queue_wait_recv(subreq
);
937 * As we've been awoken, we may have changed
938 * uid in the meantime. Ensure we're still
939 * root (SMB2_OP_LOGOFF has .as_root = true).
941 change_to_root_user();
943 status
= smbXsrv_session_logoff(state
->smb2req
->session
);
944 if (tevent_req_nterror(req
, status
)) {
949 * we may need to sign the response, so we need to keep
950 * the session until the response is sent to the wire.
952 talloc_steal(state
->smb2req
, state
->smb2req
->session
);
954 tevent_req_done(req
);
957 static NTSTATUS
smbd_smb2_logoff_recv(struct tevent_req
*req
)
959 return tevent_req_simple_recv_ntstatus(req
);