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
.cipher
== 0) {
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
;
387 data_blob_clear_free(&session_info
->session_key
);
388 session_info
->session_key
= data_blob_dup_talloc(session_info
,
389 x
->global
->application_key
);
390 if (session_info
->session_key
.data
== NULL
) {
391 return NT_STATUS_NO_MEMORY
;
394 session
->compat
->session_info
= session_info
;
395 session
->compat
->vuid
= session
->global
->session_wire_id
;
397 session
->compat
->homes_snum
=
398 register_homes_share(session_info
->unix_info
->unix_name
);
400 set_current_user_info(session_info
->unix_info
->sanitized_username
,
401 session_info
->unix_info
->unix_name
,
402 session_info
->info
->domain_name
);
404 reload_services(smb2req
->sconn
, conn_snum_used
, true);
406 session
->status
= NT_STATUS_OK
;
407 TALLOC_FREE(session
->global
->auth_session_info
);
408 session
->global
->auth_session_info
= session_info
;
409 session
->global
->auth_session_info_seqnum
+= 1;
410 session
->global
->channels
[0].auth_session_info_seqnum
=
411 session
->global
->auth_session_info_seqnum
;
412 session
->global
->auth_time
= timeval_to_nttime(&smb2req
->request_time
);
413 session
->global
->expiration_time
= gensec_expire_time(session
->gensec
);
415 status
= smbXsrv_session_update(session
);
416 if (!NT_STATUS_IS_OK(status
)) {
417 DEBUG(0, ("smb2: Failed to update session for vuid=%llu - %s\n",
418 (unsigned long long)session
->compat
->vuid
,
420 return NT_STATUS_LOGON_FAILURE
;
423 conn_clear_vuid_caches(smb2req
->sconn
, session
->compat
->vuid
);
425 if (security_session_user_level(session_info
, NULL
) >= SECURITY_USER
) {
426 smb2req
->do_signing
= true;
429 *out_session_id
= session
->global
->session_wire_id
;
434 struct smbd_smb2_session_setup_state
{
435 struct tevent_context
*ev
;
436 struct smbd_smb2_request
*smb2req
;
437 uint64_t in_session_id
;
439 uint8_t in_security_mode
;
440 uint64_t in_previous_session_id
;
441 DATA_BLOB in_security_buffer
;
442 struct smbXsrv_session
*session
;
443 struct auth_session_info
*session_info
;
444 uint16_t out_session_flags
;
445 DATA_BLOB out_security_buffer
;
446 uint64_t out_session_id
;
447 /* The following pointer is owned by state->session. */
448 struct smbd_smb2_session_setup_state
**pp_self_ref
;
451 static int pp_self_ref_destructor(struct smbd_smb2_session_setup_state
**pp_state
)
453 (*pp_state
)->session
= NULL
;
455 * To make things clearer, ensure the pp_self_ref
456 * pointer is nulled out. We're never going to
459 (*pp_state
)->pp_self_ref
= NULL
;
463 static int smbd_smb2_session_setup_state_destructor(struct smbd_smb2_session_setup_state
*state
)
465 struct smbXsrv_connection
*xconn
;
466 struct smbd_smb2_request
*preq
;
469 * If state->session is not NULL,
470 * we move the session from the session table to the request on failure
471 * so that the error response can be correctly signed, but the session
472 * is then really deleted when the request is done.
475 if (state
->session
== NULL
) {
479 state
->session
->status
= NT_STATUS_USER_SESSION_DELETED
;
480 state
->smb2req
->session
= talloc_move(state
->smb2req
, &state
->session
);
483 * We own the session now - we don't need the
484 * tag talloced on session that keeps track of session independently.
486 TALLOC_FREE(state
->pp_self_ref
);
489 * We've made this session owned by the current request.
490 * Ensure that any outstanding requests don't also refer
493 xconn
= state
->smb2req
->xconn
;
495 for (preq
= xconn
->smb2
.requests
; preq
!= NULL
; preq
= preq
->next
) {
496 if (preq
== state
->smb2req
) {
499 if (preq
->session
== state
->smb2req
->session
) {
500 preq
->session
= NULL
;
502 * If we no longer have a session we can't
503 * sign or encrypt replies.
505 preq
->do_signing
= false;
506 preq
->do_encryption
= false;
513 static void smbd_smb2_session_setup_gensec_done(struct tevent_req
*subreq
);
514 static void smbd_smb2_session_setup_previous_done(struct tevent_req
*subreq
);
515 static void smbd_smb2_session_setup_auth_return(struct tevent_req
*req
);
517 /************************************************************************
518 We have to tag the state->session pointer with memory talloc'ed
519 on it to ensure it gets NULL'ed out if the underlying struct smbXsrv_session
520 is deleted by shutdown whilst this request is in flight.
521 ************************************************************************/
523 static NTSTATUS
tag_state_session_ptr(struct smbd_smb2_session_setup_state
*state
)
525 state
->pp_self_ref
= talloc_zero(state
->session
,
526 struct smbd_smb2_session_setup_state
*);
527 if (state
->pp_self_ref
== NULL
) {
528 return NT_STATUS_NO_MEMORY
;
530 *state
->pp_self_ref
= state
;
531 talloc_set_destructor(state
->pp_self_ref
, pp_self_ref_destructor
);
535 static struct tevent_req
*smbd_smb2_session_setup_send(TALLOC_CTX
*mem_ctx
,
536 struct tevent_context
*ev
,
537 struct smbd_smb2_request
*smb2req
,
538 uint64_t in_session_id
,
540 uint8_t in_security_mode
,
541 uint64_t in_previous_session_id
,
542 DATA_BLOB in_security_buffer
)
544 struct tevent_req
*req
;
545 struct smbd_smb2_session_setup_state
*state
;
547 NTTIME now
= timeval_to_nttime(&smb2req
->request_time
);
548 struct tevent_req
*subreq
;
550 req
= tevent_req_create(mem_ctx
, &state
,
551 struct smbd_smb2_session_setup_state
);
556 state
->smb2req
= smb2req
;
557 state
->in_session_id
= in_session_id
;
558 state
->in_flags
= in_flags
;
559 state
->in_security_mode
= in_security_mode
;
560 state
->in_previous_session_id
= in_previous_session_id
;
561 state
->in_security_buffer
= in_security_buffer
;
563 if (in_flags
& SMB2_SESSION_FLAG_BINDING
) {
564 if (smb2req
->xconn
->protocol
< PROTOCOL_SMB2_22
) {
565 tevent_req_nterror(req
, NT_STATUS_REQUEST_NOT_ACCEPTED
);
566 return tevent_req_post(req
, ev
);
570 * We do not support multi channel.
572 tevent_req_nterror(req
, NT_STATUS_NOT_SUPPORTED
);
573 return tevent_req_post(req
, ev
);
576 talloc_set_destructor(state
, smbd_smb2_session_setup_state_destructor
);
578 if (state
->in_session_id
== 0) {
579 /* create a new session */
580 status
= smbXsrv_session_create(state
->smb2req
->xconn
,
581 now
, &state
->session
);
582 if (tevent_req_nterror(req
, status
)) {
583 return tevent_req_post(req
, ev
);
586 if (smb2req
->session
== NULL
) {
587 tevent_req_nterror(req
, NT_STATUS_USER_SESSION_DELETED
);
588 return tevent_req_post(req
, ev
);
591 state
->session
= smb2req
->session
;
592 status
= state
->session
->status
;
593 if (NT_STATUS_EQUAL(status
, NT_STATUS_NETWORK_SESSION_EXPIRED
)) {
594 status
= NT_STATUS_OK
;
596 if (NT_STATUS_IS_OK(status
)) {
597 state
->session
->status
= NT_STATUS_MORE_PROCESSING_REQUIRED
;
598 status
= NT_STATUS_MORE_PROCESSING_REQUIRED
;
599 TALLOC_FREE(state
->session
->gensec
);
601 if (!NT_STATUS_EQUAL(status
, NT_STATUS_MORE_PROCESSING_REQUIRED
)) {
602 tevent_req_nterror(req
, status
);
603 return tevent_req_post(req
, ev
);
607 status
= tag_state_session_ptr(state
);
608 if (tevent_req_nterror(req
, status
)) {
609 return tevent_req_post(req
, ev
);
612 if (state
->session
->gensec
== NULL
) {
613 status
= auth_generic_prepare(state
->session
,
614 state
->smb2req
->xconn
->remote_address
,
615 &state
->session
->gensec
);
616 if (tevent_req_nterror(req
, status
)) {
617 return tevent_req_post(req
, ev
);
620 gensec_want_feature(state
->session
->gensec
, GENSEC_FEATURE_SESSION_KEY
);
621 gensec_want_feature(state
->session
->gensec
, GENSEC_FEATURE_UNIX_TOKEN
);
623 status
= gensec_start_mech_by_oid(state
->session
->gensec
,
625 if (tevent_req_nterror(req
, status
)) {
626 return tevent_req_post(req
, ev
);
631 subreq
= gensec_update_send(state
, state
->ev
,
632 state
->session
->gensec
,
633 state
->in_security_buffer
);
635 if (tevent_req_nomem(subreq
, req
)) {
636 return tevent_req_post(req
, ev
);
638 tevent_req_set_callback(subreq
, smbd_smb2_session_setup_gensec_done
, req
);
643 static void smbd_smb2_session_setup_gensec_done(struct tevent_req
*subreq
)
645 struct tevent_req
*req
=
646 tevent_req_callback_data(subreq
,
648 struct smbd_smb2_session_setup_state
*state
=
650 struct smbd_smb2_session_setup_state
);
654 status
= gensec_update_recv(subreq
, state
,
655 &state
->out_security_buffer
);
658 if (!NT_STATUS_EQUAL(status
, NT_STATUS_MORE_PROCESSING_REQUIRED
) &&
659 !NT_STATUS_IS_OK(status
)) {
660 tevent_req_nterror(req
, status
);
664 if (NT_STATUS_EQUAL(status
, NT_STATUS_MORE_PROCESSING_REQUIRED
)) {
665 state
->out_session_id
= state
->session
->global
->session_wire_id
;
666 /* we want to keep the session */
667 state
->session
= NULL
;
668 TALLOC_FREE(state
->pp_self_ref
);
669 tevent_req_nterror(req
, status
);
673 status
= gensec_session_info(state
->session
->gensec
,
674 state
->session
->global
,
675 &state
->session_info
);
676 if (tevent_req_nterror(req
, status
)) {
680 if ((state
->in_previous_session_id
!= 0) &&
681 (state
->session
->global
->session_wire_id
!=
682 state
->in_previous_session_id
))
684 subreq
= smb2srv_session_close_previous_send(state
, state
->ev
,
685 state
->smb2req
->xconn
,
687 state
->in_previous_session_id
,
688 state
->session
->global
->session_wire_id
);
689 if (tevent_req_nomem(subreq
, req
)) {
692 tevent_req_set_callback(subreq
,
693 smbd_smb2_session_setup_previous_done
,
698 smbd_smb2_session_setup_auth_return(req
);
701 static void smbd_smb2_session_setup_previous_done(struct tevent_req
*subreq
)
703 struct tevent_req
*req
=
704 tevent_req_callback_data(subreq
,
708 status
= smb2srv_session_close_previous_recv(subreq
);
710 if (tevent_req_nterror(req
, status
)) {
714 smbd_smb2_session_setup_auth_return(req
);
717 static void smbd_smb2_session_setup_auth_return(struct tevent_req
*req
)
719 struct smbd_smb2_session_setup_state
*state
=
721 struct smbd_smb2_session_setup_state
);
724 if (state
->session
->global
->auth_session_info
!= NULL
) {
725 status
= smbd_smb2_reauth_generic_return(state
->session
,
728 &state
->out_session_flags
,
729 &state
->out_session_id
);
730 if (tevent_req_nterror(req
, status
)) {
733 /* we want to keep the session */
734 state
->session
= NULL
;
735 TALLOC_FREE(state
->pp_self_ref
);
736 tevent_req_done(req
);
740 status
= smbd_smb2_auth_generic_return(state
->session
,
742 state
->in_security_mode
,
744 &state
->out_session_flags
,
745 &state
->out_session_id
);
746 if (tevent_req_nterror(req
, status
)) {
750 /* we want to keep the session */
751 state
->session
= NULL
;
752 TALLOC_FREE(state
->pp_self_ref
);
753 tevent_req_done(req
);
757 static NTSTATUS
smbd_smb2_session_setup_recv(struct tevent_req
*req
,
758 uint16_t *out_session_flags
,
760 DATA_BLOB
*out_security_buffer
,
761 uint64_t *out_session_id
)
763 struct smbd_smb2_session_setup_state
*state
=
765 struct smbd_smb2_session_setup_state
);
768 if (tevent_req_is_nterror(req
, &status
)) {
769 if (!NT_STATUS_EQUAL(status
, NT_STATUS_MORE_PROCESSING_REQUIRED
)) {
770 tevent_req_received(req
);
771 return nt_status_squash(status
);
774 status
= NT_STATUS_OK
;
777 *out_session_flags
= state
->out_session_flags
;
778 *out_security_buffer
= state
->out_security_buffer
;
779 *out_session_id
= state
->out_session_id
;
781 talloc_steal(mem_ctx
, out_security_buffer
->data
);
782 tevent_req_received(req
);
786 static struct tevent_req
*smbd_smb2_logoff_send(TALLOC_CTX
*mem_ctx
,
787 struct tevent_context
*ev
,
788 struct smbd_smb2_request
*smb2req
);
789 static NTSTATUS
smbd_smb2_logoff_recv(struct tevent_req
*req
);
790 static void smbd_smb2_request_logoff_done(struct tevent_req
*subreq
);
792 NTSTATUS
smbd_smb2_request_process_logoff(struct smbd_smb2_request
*req
)
795 struct tevent_req
*subreq
= NULL
;
797 status
= smbd_smb2_request_verify_sizes(req
, 0x04);
798 if (!NT_STATUS_IS_OK(status
)) {
799 return smbd_smb2_request_error(req
, status
);
802 subreq
= smbd_smb2_logoff_send(req
, req
->sconn
->ev_ctx
, req
);
803 if (subreq
== NULL
) {
804 return smbd_smb2_request_error(req
, NT_STATUS_NO_MEMORY
);
806 tevent_req_set_callback(subreq
, smbd_smb2_request_logoff_done
, req
);
809 * Wait a long time before going async on this to allow
810 * requests we're waiting on to finish. Set timeout to 10 secs.
812 return smbd_smb2_request_pending_queue(req
, subreq
, 10000000);
815 static void smbd_smb2_request_logoff_done(struct tevent_req
*subreq
)
817 struct smbd_smb2_request
*smb2req
=
818 tevent_req_callback_data(subreq
,
819 struct smbd_smb2_request
);
824 status
= smbd_smb2_logoff_recv(subreq
);
826 if (!NT_STATUS_IS_OK(status
)) {
827 error
= smbd_smb2_request_error(smb2req
, status
);
828 if (!NT_STATUS_IS_OK(error
)) {
829 smbd_server_connection_terminate(smb2req
->xconn
,
836 outbody
= smbd_smb2_generate_outbody(smb2req
, 0x04);
837 if (outbody
.data
== NULL
) {
838 error
= smbd_smb2_request_error(smb2req
, NT_STATUS_NO_MEMORY
);
839 if (!NT_STATUS_IS_OK(error
)) {
840 smbd_server_connection_terminate(smb2req
->xconn
,
847 SSVAL(outbody
.data
, 0x00, 0x04); /* struct size */
848 SSVAL(outbody
.data
, 0x02, 0); /* reserved */
850 error
= smbd_smb2_request_done(smb2req
, outbody
, NULL
);
851 if (!NT_STATUS_IS_OK(error
)) {
852 smbd_server_connection_terminate(smb2req
->xconn
,
858 struct smbd_smb2_logout_state
{
859 struct smbd_smb2_request
*smb2req
;
860 struct tevent_queue
*wait_queue
;
863 static void smbd_smb2_logoff_wait_done(struct tevent_req
*subreq
);
865 static struct tevent_req
*smbd_smb2_logoff_send(TALLOC_CTX
*mem_ctx
,
866 struct tevent_context
*ev
,
867 struct smbd_smb2_request
*smb2req
)
869 struct tevent_req
*req
;
870 struct smbd_smb2_logout_state
*state
;
871 struct tevent_req
*subreq
;
872 struct smbd_smb2_request
*preq
;
873 struct smbXsrv_connection
*xconn
= smb2req
->xconn
;
875 req
= tevent_req_create(mem_ctx
, &state
,
876 struct smbd_smb2_logout_state
);
880 state
->smb2req
= smb2req
;
882 state
->wait_queue
= tevent_queue_create(state
, "logoff_wait_queue");
883 if (tevent_req_nomem(state
->wait_queue
, req
)) {
884 return tevent_req_post(req
, ev
);
888 * Make sure that no new request will be able to use this session.
890 smb2req
->session
->status
= NT_STATUS_USER_SESSION_DELETED
;
892 for (preq
= xconn
->smb2
.requests
; preq
!= NULL
; preq
= preq
->next
) {
893 if (preq
== smb2req
) {
894 /* Can't cancel current request. */
897 if (preq
->session
!= smb2req
->session
) {
898 /* Request on different session. */
903 * Never cancel anything in a compound
904 * request. Way too hard to deal with
907 if (!preq
->compound_related
&& preq
->subreq
!= NULL
) {
908 tevent_req_cancel(preq
->subreq
);
912 * Now wait until the request is finished.
914 * We don't set a callback, as we just want to block the
915 * wait queue and the talloc_free() of the request will
916 * remove the item from the wait queue.
918 subreq
= tevent_queue_wait_send(preq
, ev
, state
->wait_queue
);
919 if (tevent_req_nomem(subreq
, req
)) {
920 return tevent_req_post(req
, ev
);
925 * Now we add our own waiter to the end of the queue,
926 * this way we get notified when all pending requests are finished
927 * and send to the socket.
929 subreq
= tevent_queue_wait_send(state
, ev
, state
->wait_queue
);
930 if (tevent_req_nomem(subreq
, req
)) {
931 return tevent_req_post(req
, ev
);
933 tevent_req_set_callback(subreq
, smbd_smb2_logoff_wait_done
, req
);
938 static void smbd_smb2_logoff_wait_done(struct tevent_req
*subreq
)
940 struct tevent_req
*req
= tevent_req_callback_data(
941 subreq
, struct tevent_req
);
942 struct smbd_smb2_logout_state
*state
= tevent_req_data(
943 req
, struct smbd_smb2_logout_state
);
946 tevent_queue_wait_recv(subreq
);
950 * As we've been awoken, we may have changed
951 * uid in the meantime. Ensure we're still
952 * root (SMB2_OP_LOGOFF has .as_root = true).
954 change_to_root_user();
956 status
= smbXsrv_session_logoff(state
->smb2req
->session
);
957 if (tevent_req_nterror(req
, status
)) {
962 * we may need to sign the response, so we need to keep
963 * the session until the response is sent to the wire.
965 talloc_steal(state
->smb2req
, state
->smb2req
->session
);
967 tevent_req_done(req
);
970 static NTSTATUS
smbd_smb2_logoff_recv(struct tevent_req
*req
)
972 return tevent_req_simple_recv_ntstatus(req
);