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_OFF
) &&
194 (xconn
->smb2
.client
.capabilities
& SMB2_CAP_ENCRYPTION
)) {
195 x
->global
->encryption_required
= true;
198 if (lp_smb_encrypt(-1) == SMB_SIGNING_REQUIRED
) {
199 x
->global
->encryption_required
= true;
202 if (security_session_user_level(session_info
, NULL
) < SECURITY_USER
) {
203 /* we map anonymous to guest internally */
204 *out_session_flags
|= SMB2_SESSION_FLAG_IS_GUEST
;
205 *out_session_flags
|= SMB2_SESSION_FLAG_IS_NULL
;
206 /* force no signing */
207 x
->global
->signing_required
= false;
211 if (guest
&& x
->global
->encryption_required
) {
212 DEBUG(1,("reject guest session as encryption is required\n"));
213 return NT_STATUS_ACCESS_DENIED
;
216 if (xconn
->smb2
.server
.cipher
== 0) {
217 if (x
->global
->encryption_required
) {
218 DEBUG(1,("reject session with dialect[0x%04X] "
219 "as encryption is required\n",
220 xconn
->smb2
.server
.dialect
));
221 return NT_STATUS_ACCESS_DENIED
;
225 if (x
->global
->encryption_required
) {
226 *out_session_flags
|= SMB2_SESSION_FLAG_ENCRYPT_DATA
;
229 ZERO_STRUCT(session_key
);
230 memcpy(session_key
, session_info
->session_key
.data
,
231 MIN(session_info
->session_key
.length
, sizeof(session_key
)));
233 x
->global
->signing_key
= data_blob_talloc(x
->global
,
235 sizeof(session_key
));
236 if (x
->global
->signing_key
.data
== NULL
) {
237 ZERO_STRUCT(session_key
);
238 return NT_STATUS_NO_MEMORY
;
241 if (xconn
->protocol
>= PROTOCOL_SMB2_24
) {
242 const DATA_BLOB label
= data_blob_string_const_null("SMB2AESCMAC");
243 const DATA_BLOB context
= data_blob_string_const_null("SmbSign");
245 smb2_key_derivation(session_key
, sizeof(session_key
),
246 label
.data
, label
.length
,
247 context
.data
, context
.length
,
248 x
->global
->signing_key
.data
);
251 if (xconn
->protocol
>= PROTOCOL_SMB2_24
) {
252 const DATA_BLOB label
= data_blob_string_const_null("SMB2AESCCM");
253 const DATA_BLOB context
= data_blob_string_const_null("ServerIn ");
255 x
->global
->decryption_key
= data_blob_talloc(x
->global
,
257 sizeof(session_key
));
258 if (x
->global
->decryption_key
.data
== NULL
) {
259 ZERO_STRUCT(session_key
);
260 return NT_STATUS_NO_MEMORY
;
263 smb2_key_derivation(session_key
, sizeof(session_key
),
264 label
.data
, label
.length
,
265 context
.data
, context
.length
,
266 x
->global
->decryption_key
.data
);
269 if (xconn
->protocol
>= PROTOCOL_SMB2_24
) {
270 const DATA_BLOB label
= data_blob_string_const_null("SMB2AESCCM");
271 const DATA_BLOB context
= data_blob_string_const_null("ServerOut");
273 x
->global
->encryption_key
= data_blob_talloc(x
->global
,
275 sizeof(session_key
));
276 if (x
->global
->encryption_key
.data
== NULL
) {
277 ZERO_STRUCT(session_key
);
278 return NT_STATUS_NO_MEMORY
;
281 smb2_key_derivation(session_key
, sizeof(session_key
),
282 label
.data
, label
.length
,
283 context
.data
, context
.length
,
284 x
->global
->encryption_key
.data
);
286 generate_random_buffer((uint8_t *)&x
->nonce_high
, sizeof(x
->nonce_high
));
290 x
->global
->application_key
= data_blob_dup_talloc(x
->global
,
291 x
->global
->signing_key
);
292 if (x
->global
->application_key
.data
== NULL
) {
293 ZERO_STRUCT(session_key
);
294 return NT_STATUS_NO_MEMORY
;
297 if (xconn
->protocol
>= PROTOCOL_SMB2_24
) {
298 const DATA_BLOB label
= data_blob_string_const_null("SMB2APP");
299 const DATA_BLOB context
= data_blob_string_const_null("SmbRpc");
301 smb2_key_derivation(session_key
, sizeof(session_key
),
302 label
.data
, label
.length
,
303 context
.data
, context
.length
,
304 x
->global
->application_key
.data
);
306 ZERO_STRUCT(session_key
);
308 x
->global
->channels
[0].signing_key
= data_blob_dup_talloc(x
->global
->channels
,
309 x
->global
->signing_key
);
310 if (x
->global
->channels
[0].signing_key
.data
== NULL
) {
311 return NT_STATUS_NO_MEMORY
;
314 data_blob_clear_free(&session_info
->session_key
);
315 session_info
->session_key
= data_blob_dup_talloc(session_info
,
316 x
->global
->application_key
);
317 if (session_info
->session_key
.data
== NULL
) {
318 return NT_STATUS_NO_MEMORY
;
321 session
->compat
= talloc_zero(session
, struct user_struct
);
322 if (session
->compat
== NULL
) {
323 return NT_STATUS_NO_MEMORY
;
325 session
->compat
->session
= session
;
326 session
->compat
->homes_snum
= -1;
327 session
->compat
->session_info
= session_info
;
328 session
->compat
->session_keystr
= NULL
;
329 session
->compat
->vuid
= session
->global
->session_wire_id
;
330 DLIST_ADD(smb2req
->sconn
->users
, session
->compat
);
331 smb2req
->sconn
->num_users
++;
333 if (security_session_user_level(session_info
, NULL
) >= SECURITY_USER
) {
334 session
->compat
->homes_snum
=
335 register_homes_share(session_info
->unix_info
->unix_name
);
338 set_current_user_info(session_info
->unix_info
->sanitized_username
,
339 session_info
->unix_info
->unix_name
,
340 session_info
->info
->domain_name
);
342 reload_services(smb2req
->sconn
, conn_snum_used
, true);
344 session
->status
= NT_STATUS_OK
;
345 session
->global
->auth_session_info
= session_info
;
346 session
->global
->auth_session_info_seqnum
+= 1;
347 session
->global
->channels
[0].auth_session_info_seqnum
=
348 session
->global
->auth_session_info_seqnum
;
349 session
->global
->auth_time
= timeval_to_nttime(&smb2req
->request_time
);
350 session
->global
->expiration_time
= gensec_expire_time(session
->gensec
);
352 if (!session_claim(session
)) {
353 DEBUG(1, ("smb2: Failed to claim session "
355 (unsigned long long)session
->compat
->vuid
));
356 return NT_STATUS_LOGON_FAILURE
;
359 status
= smbXsrv_session_update(session
);
360 if (!NT_STATUS_IS_OK(status
)) {
361 DEBUG(0, ("smb2: Failed to update session for vuid=%llu - %s\n",
362 (unsigned long long)session
->compat
->vuid
,
364 return NT_STATUS_LOGON_FAILURE
;
368 * we attach the session to the request
369 * so that the response can be signed
371 smb2req
->session
= session
;
373 smb2req
->do_signing
= true;
376 global_client_caps
|= (CAP_LEVEL_II_OPLOCKS
|CAP_STATUS32
);
378 *out_session_id
= session
->global
->session_wire_id
;
383 static NTSTATUS
smbd_smb2_reauth_generic_return(struct smbXsrv_session
*session
,
384 struct smbd_smb2_request
*smb2req
,
385 struct auth_session_info
*session_info
,
386 uint16_t *out_session_flags
,
387 uint64_t *out_session_id
)
390 struct smbXsrv_session
*x
= session
;
392 data_blob_clear_free(&session_info
->session_key
);
393 session_info
->session_key
= data_blob_dup_talloc(session_info
,
394 x
->global
->application_key
);
395 if (session_info
->session_key
.data
== NULL
) {
396 return NT_STATUS_NO_MEMORY
;
399 session
->compat
->session_info
= session_info
;
400 session
->compat
->vuid
= session
->global
->session_wire_id
;
402 session
->compat
->homes_snum
=
403 register_homes_share(session_info
->unix_info
->unix_name
);
405 set_current_user_info(session_info
->unix_info
->sanitized_username
,
406 session_info
->unix_info
->unix_name
,
407 session_info
->info
->domain_name
);
409 reload_services(smb2req
->sconn
, conn_snum_used
, true);
411 session
->status
= NT_STATUS_OK
;
412 TALLOC_FREE(session
->global
->auth_session_info
);
413 session
->global
->auth_session_info
= session_info
;
414 session
->global
->auth_session_info_seqnum
+= 1;
415 session
->global
->channels
[0].auth_session_info_seqnum
=
416 session
->global
->auth_session_info_seqnum
;
417 session
->global
->auth_time
= timeval_to_nttime(&smb2req
->request_time
);
418 session
->global
->expiration_time
= gensec_expire_time(session
->gensec
);
420 status
= smbXsrv_session_update(session
);
421 if (!NT_STATUS_IS_OK(status
)) {
422 DEBUG(0, ("smb2: Failed to update session for vuid=%llu - %s\n",
423 (unsigned long long)session
->compat
->vuid
,
425 return NT_STATUS_LOGON_FAILURE
;
428 conn_clear_vuid_caches(smb2req
->sconn
, session
->compat
->vuid
);
430 if (security_session_user_level(session_info
, NULL
) >= SECURITY_USER
) {
431 smb2req
->do_signing
= true;
434 *out_session_id
= session
->global
->session_wire_id
;
439 struct smbd_smb2_session_setup_state
{
440 struct tevent_context
*ev
;
441 struct smbd_smb2_request
*smb2req
;
442 uint64_t in_session_id
;
444 uint8_t in_security_mode
;
445 uint64_t in_previous_session_id
;
446 DATA_BLOB in_security_buffer
;
447 struct smbXsrv_session
*session
;
448 struct auth_session_info
*session_info
;
449 uint16_t out_session_flags
;
450 DATA_BLOB out_security_buffer
;
451 uint64_t out_session_id
;
452 /* The following pointer is owned by state->session. */
453 struct smbd_smb2_session_setup_state
**pp_self_ref
;
456 static int pp_self_ref_destructor(struct smbd_smb2_session_setup_state
**pp_state
)
458 (*pp_state
)->session
= NULL
;
460 * To make things clearer, ensure the pp_self_ref
461 * pointer is nulled out. We're never going to
464 (*pp_state
)->pp_self_ref
= NULL
;
468 static int smbd_smb2_session_setup_state_destructor(struct smbd_smb2_session_setup_state
*state
)
470 struct smbXsrv_connection
*xconn
;
471 struct smbd_smb2_request
*preq
;
474 * If state->session is not NULL,
475 * we move the session from the session table to the request on failure
476 * so that the error response can be correctly signed, but the session
477 * is then really deleted when the request is done.
480 if (state
->session
== NULL
) {
484 state
->session
->status
= NT_STATUS_USER_SESSION_DELETED
;
485 state
->smb2req
->session
= talloc_move(state
->smb2req
, &state
->session
);
488 * We own the session now - we don't need the
489 * tag talloced on session that keeps track of session independently.
491 TALLOC_FREE(state
->pp_self_ref
);
494 * We've made this session owned by the current request.
495 * Ensure that any outstanding requests don't also refer
498 xconn
= state
->smb2req
->xconn
;
500 for (preq
= xconn
->smb2
.requests
; preq
!= NULL
; preq
= preq
->next
) {
501 if (preq
== state
->smb2req
) {
504 if (preq
->session
== state
->smb2req
->session
) {
505 preq
->session
= NULL
;
507 * If we no longer have a session we can't
508 * sign or encrypt replies.
510 preq
->do_signing
= false;
511 preq
->do_encryption
= false;
518 static void smbd_smb2_session_setup_gensec_done(struct tevent_req
*subreq
);
519 static void smbd_smb2_session_setup_previous_done(struct tevent_req
*subreq
);
520 static void smbd_smb2_session_setup_auth_return(struct tevent_req
*req
);
522 /************************************************************************
523 We have to tag the state->session pointer with memory talloc'ed
524 on it to ensure it gets NULL'ed out if the underlying struct smbXsrv_session
525 is deleted by shutdown whilst this request is in flight.
526 ************************************************************************/
528 static NTSTATUS
tag_state_session_ptr(struct smbd_smb2_session_setup_state
*state
)
530 state
->pp_self_ref
= talloc_zero(state
->session
,
531 struct smbd_smb2_session_setup_state
*);
532 if (state
->pp_self_ref
== NULL
) {
533 return NT_STATUS_NO_MEMORY
;
535 *state
->pp_self_ref
= state
;
536 talloc_set_destructor(state
->pp_self_ref
, pp_self_ref_destructor
);
540 static struct tevent_req
*smbd_smb2_session_setup_send(TALLOC_CTX
*mem_ctx
,
541 struct tevent_context
*ev
,
542 struct smbd_smb2_request
*smb2req
,
543 uint64_t in_session_id
,
545 uint8_t in_security_mode
,
546 uint64_t in_previous_session_id
,
547 DATA_BLOB in_security_buffer
)
549 struct tevent_req
*req
;
550 struct smbd_smb2_session_setup_state
*state
;
552 NTTIME now
= timeval_to_nttime(&smb2req
->request_time
);
553 struct tevent_req
*subreq
;
555 req
= tevent_req_create(mem_ctx
, &state
,
556 struct smbd_smb2_session_setup_state
);
561 state
->smb2req
= smb2req
;
562 state
->in_session_id
= in_session_id
;
563 state
->in_flags
= in_flags
;
564 state
->in_security_mode
= in_security_mode
;
565 state
->in_previous_session_id
= in_previous_session_id
;
566 state
->in_security_buffer
= in_security_buffer
;
568 if (in_flags
& SMB2_SESSION_FLAG_BINDING
) {
569 if (smb2req
->xconn
->protocol
< PROTOCOL_SMB2_22
) {
570 tevent_req_nterror(req
, NT_STATUS_REQUEST_NOT_ACCEPTED
);
571 return tevent_req_post(req
, ev
);
575 * We do not support multi channel.
577 tevent_req_nterror(req
, NT_STATUS_NOT_SUPPORTED
);
578 return tevent_req_post(req
, ev
);
581 talloc_set_destructor(state
, smbd_smb2_session_setup_state_destructor
);
583 if (state
->in_session_id
== 0) {
584 /* create a new session */
585 status
= smbXsrv_session_create(state
->smb2req
->xconn
,
586 now
, &state
->session
);
587 if (tevent_req_nterror(req
, status
)) {
588 return tevent_req_post(req
, ev
);
591 if (smb2req
->session
== NULL
) {
592 tevent_req_nterror(req
, NT_STATUS_USER_SESSION_DELETED
);
593 return tevent_req_post(req
, ev
);
596 state
->session
= smb2req
->session
;
597 status
= state
->session
->status
;
598 if (NT_STATUS_EQUAL(status
, NT_STATUS_NETWORK_SESSION_EXPIRED
)) {
599 status
= NT_STATUS_OK
;
601 if (NT_STATUS_IS_OK(status
)) {
602 state
->session
->status
= NT_STATUS_MORE_PROCESSING_REQUIRED
;
603 status
= NT_STATUS_MORE_PROCESSING_REQUIRED
;
604 TALLOC_FREE(state
->session
->gensec
);
606 if (!NT_STATUS_EQUAL(status
, NT_STATUS_MORE_PROCESSING_REQUIRED
)) {
607 tevent_req_nterror(req
, status
);
608 return tevent_req_post(req
, ev
);
612 status
= tag_state_session_ptr(state
);
613 if (tevent_req_nterror(req
, status
)) {
614 return tevent_req_post(req
, ev
);
617 if (state
->session
->gensec
== NULL
) {
618 status
= auth_generic_prepare(state
->session
,
619 state
->smb2req
->xconn
->remote_address
,
620 &state
->session
->gensec
);
621 if (tevent_req_nterror(req
, status
)) {
622 return tevent_req_post(req
, ev
);
625 gensec_want_feature(state
->session
->gensec
, GENSEC_FEATURE_SESSION_KEY
);
626 gensec_want_feature(state
->session
->gensec
, GENSEC_FEATURE_UNIX_TOKEN
);
628 status
= gensec_start_mech_by_oid(state
->session
->gensec
,
630 if (tevent_req_nterror(req
, status
)) {
631 return tevent_req_post(req
, ev
);
636 subreq
= gensec_update_send(state
, state
->ev
,
637 state
->session
->gensec
,
638 state
->in_security_buffer
);
640 if (tevent_req_nomem(subreq
, req
)) {
641 return tevent_req_post(req
, ev
);
643 tevent_req_set_callback(subreq
, smbd_smb2_session_setup_gensec_done
, req
);
648 static void smbd_smb2_session_setup_gensec_done(struct tevent_req
*subreq
)
650 struct tevent_req
*req
=
651 tevent_req_callback_data(subreq
,
653 struct smbd_smb2_session_setup_state
*state
=
655 struct smbd_smb2_session_setup_state
);
659 status
= gensec_update_recv(subreq
, state
,
660 &state
->out_security_buffer
);
663 if (!NT_STATUS_EQUAL(status
, NT_STATUS_MORE_PROCESSING_REQUIRED
) &&
664 !NT_STATUS_IS_OK(status
)) {
665 tevent_req_nterror(req
, status
);
669 if (NT_STATUS_EQUAL(status
, NT_STATUS_MORE_PROCESSING_REQUIRED
)) {
670 state
->out_session_id
= state
->session
->global
->session_wire_id
;
671 /* we want to keep the session */
672 state
->session
= NULL
;
673 TALLOC_FREE(state
->pp_self_ref
);
674 tevent_req_nterror(req
, status
);
678 status
= gensec_session_info(state
->session
->gensec
,
679 state
->session
->global
,
680 &state
->session_info
);
681 if (tevent_req_nterror(req
, status
)) {
685 if ((state
->in_previous_session_id
!= 0) &&
686 (state
->session
->global
->session_wire_id
!=
687 state
->in_previous_session_id
))
689 subreq
= smb2srv_session_close_previous_send(state
, state
->ev
,
690 state
->smb2req
->xconn
,
692 state
->in_previous_session_id
,
693 state
->session
->global
->session_wire_id
);
694 if (tevent_req_nomem(subreq
, req
)) {
697 tevent_req_set_callback(subreq
,
698 smbd_smb2_session_setup_previous_done
,
703 smbd_smb2_session_setup_auth_return(req
);
706 static void smbd_smb2_session_setup_previous_done(struct tevent_req
*subreq
)
708 struct tevent_req
*req
=
709 tevent_req_callback_data(subreq
,
713 status
= smb2srv_session_close_previous_recv(subreq
);
715 if (tevent_req_nterror(req
, status
)) {
719 smbd_smb2_session_setup_auth_return(req
);
722 static void smbd_smb2_session_setup_auth_return(struct tevent_req
*req
)
724 struct smbd_smb2_session_setup_state
*state
=
726 struct smbd_smb2_session_setup_state
);
729 if (state
->session
->global
->auth_session_info
!= NULL
) {
730 status
= smbd_smb2_reauth_generic_return(state
->session
,
733 &state
->out_session_flags
,
734 &state
->out_session_id
);
735 if (tevent_req_nterror(req
, status
)) {
738 /* we want to keep the session */
739 state
->session
= NULL
;
740 TALLOC_FREE(state
->pp_self_ref
);
741 tevent_req_done(req
);
745 status
= smbd_smb2_auth_generic_return(state
->session
,
747 state
->in_security_mode
,
749 &state
->out_session_flags
,
750 &state
->out_session_id
);
751 if (tevent_req_nterror(req
, status
)) {
755 /* we want to keep the session */
756 state
->session
= NULL
;
757 TALLOC_FREE(state
->pp_self_ref
);
758 tevent_req_done(req
);
762 static NTSTATUS
smbd_smb2_session_setup_recv(struct tevent_req
*req
,
763 uint16_t *out_session_flags
,
765 DATA_BLOB
*out_security_buffer
,
766 uint64_t *out_session_id
)
768 struct smbd_smb2_session_setup_state
*state
=
770 struct smbd_smb2_session_setup_state
);
773 if (tevent_req_is_nterror(req
, &status
)) {
774 if (!NT_STATUS_EQUAL(status
, NT_STATUS_MORE_PROCESSING_REQUIRED
)) {
775 tevent_req_received(req
);
776 return nt_status_squash(status
);
779 status
= NT_STATUS_OK
;
782 *out_session_flags
= state
->out_session_flags
;
783 *out_security_buffer
= state
->out_security_buffer
;
784 *out_session_id
= state
->out_session_id
;
786 talloc_steal(mem_ctx
, out_security_buffer
->data
);
787 tevent_req_received(req
);
791 static struct tevent_req
*smbd_smb2_logoff_send(TALLOC_CTX
*mem_ctx
,
792 struct tevent_context
*ev
,
793 struct smbd_smb2_request
*smb2req
);
794 static NTSTATUS
smbd_smb2_logoff_recv(struct tevent_req
*req
);
795 static void smbd_smb2_request_logoff_done(struct tevent_req
*subreq
);
797 NTSTATUS
smbd_smb2_request_process_logoff(struct smbd_smb2_request
*req
)
800 struct tevent_req
*subreq
= NULL
;
802 status
= smbd_smb2_request_verify_sizes(req
, 0x04);
803 if (!NT_STATUS_IS_OK(status
)) {
804 return smbd_smb2_request_error(req
, status
);
807 subreq
= smbd_smb2_logoff_send(req
, req
->sconn
->ev_ctx
, req
);
808 if (subreq
== NULL
) {
809 return smbd_smb2_request_error(req
, NT_STATUS_NO_MEMORY
);
811 tevent_req_set_callback(subreq
, smbd_smb2_request_logoff_done
, req
);
814 * Wait a long time before going async on this to allow
815 * requests we're waiting on to finish. Set timeout to 10 secs.
817 return smbd_smb2_request_pending_queue(req
, subreq
, 10000000);
820 static void smbd_smb2_request_logoff_done(struct tevent_req
*subreq
)
822 struct smbd_smb2_request
*smb2req
=
823 tevent_req_callback_data(subreq
,
824 struct smbd_smb2_request
);
829 status
= smbd_smb2_logoff_recv(subreq
);
831 if (!NT_STATUS_IS_OK(status
)) {
832 error
= smbd_smb2_request_error(smb2req
, status
);
833 if (!NT_STATUS_IS_OK(error
)) {
834 smbd_server_connection_terminate(smb2req
->xconn
,
841 outbody
= smbd_smb2_generate_outbody(smb2req
, 0x04);
842 if (outbody
.data
== NULL
) {
843 error
= smbd_smb2_request_error(smb2req
, NT_STATUS_NO_MEMORY
);
844 if (!NT_STATUS_IS_OK(error
)) {
845 smbd_server_connection_terminate(smb2req
->xconn
,
852 SSVAL(outbody
.data
, 0x00, 0x04); /* struct size */
853 SSVAL(outbody
.data
, 0x02, 0); /* reserved */
855 error
= smbd_smb2_request_done(smb2req
, outbody
, NULL
);
856 if (!NT_STATUS_IS_OK(error
)) {
857 smbd_server_connection_terminate(smb2req
->xconn
,
863 struct smbd_smb2_logout_state
{
864 struct smbd_smb2_request
*smb2req
;
865 struct tevent_queue
*wait_queue
;
868 static void smbd_smb2_logoff_wait_done(struct tevent_req
*subreq
);
870 static struct tevent_req
*smbd_smb2_logoff_send(TALLOC_CTX
*mem_ctx
,
871 struct tevent_context
*ev
,
872 struct smbd_smb2_request
*smb2req
)
874 struct tevent_req
*req
;
875 struct smbd_smb2_logout_state
*state
;
876 struct tevent_req
*subreq
;
877 struct smbd_smb2_request
*preq
;
878 struct smbXsrv_connection
*xconn
= smb2req
->xconn
;
880 req
= tevent_req_create(mem_ctx
, &state
,
881 struct smbd_smb2_logout_state
);
885 state
->smb2req
= smb2req
;
887 state
->wait_queue
= tevent_queue_create(state
, "logoff_wait_queue");
888 if (tevent_req_nomem(state
->wait_queue
, req
)) {
889 return tevent_req_post(req
, ev
);
893 * Make sure that no new request will be able to use this session.
895 smb2req
->session
->status
= NT_STATUS_USER_SESSION_DELETED
;
897 for (preq
= xconn
->smb2
.requests
; preq
!= NULL
; preq
= preq
->next
) {
898 if (preq
== smb2req
) {
899 /* Can't cancel current request. */
902 if (preq
->session
!= smb2req
->session
) {
903 /* Request on different session. */
908 * Never cancel anything in a compound
909 * request. Way too hard to deal with
912 if (!preq
->compound_related
&& preq
->subreq
!= NULL
) {
913 tevent_req_cancel(preq
->subreq
);
917 * Now wait until the request is finished.
919 * We don't set a callback, as we just want to block the
920 * wait queue and the talloc_free() of the request will
921 * remove the item from the wait queue.
923 subreq
= tevent_queue_wait_send(preq
, ev
, state
->wait_queue
);
924 if (tevent_req_nomem(subreq
, req
)) {
925 return tevent_req_post(req
, ev
);
930 * Now we add our own waiter to the end of the queue,
931 * this way we get notified when all pending requests are finished
932 * and send to the socket.
934 subreq
= tevent_queue_wait_send(state
, ev
, state
->wait_queue
);
935 if (tevent_req_nomem(subreq
, req
)) {
936 return tevent_req_post(req
, ev
);
938 tevent_req_set_callback(subreq
, smbd_smb2_logoff_wait_done
, req
);
943 static void smbd_smb2_logoff_wait_done(struct tevent_req
*subreq
)
945 struct tevent_req
*req
= tevent_req_callback_data(
946 subreq
, struct tevent_req
);
947 struct smbd_smb2_logout_state
*state
= tevent_req_data(
948 req
, struct smbd_smb2_logout_state
);
951 tevent_queue_wait_recv(subreq
);
955 * As we've been awoken, we may have changed
956 * uid in the meantime. Ensure we're still
957 * root (SMB2_OP_LOGOFF has .as_root = true).
959 change_to_root_user();
961 status
= smbXsrv_session_logoff(state
->smb2req
->session
);
962 if (tevent_req_nterror(req
, status
)) {
967 * we may need to sign the response, so we need to keep
968 * the session until the response is sent to the wire.
970 talloc_steal(state
->smb2req
, state
->smb2req
->session
);
972 tevent_req_done(req
);
975 static NTSTATUS
smbd_smb2_logoff_recv(struct tevent_req
*req
)
977 return tevent_req_simple_recv_ntstatus(req
);