2 Unix SMB/CIFS implementation.
4 Copyright (C) Andrew Tridgell 1998-2001
5 Copyright (C) Andrew Bartlett 2001
6 Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2002
7 Copyright (C) Luke Howard 2003
8 Copyright (C) Volker Lendecke 2007
9 Copyright (C) Jeremy Allison 2007
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 3 of the License, or
14 (at your option) any later version.
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with this program. If not, see <http://www.gnu.org/licenses/>.
26 #include "smbd/globals.h"
27 #include "../libcli/auth/spnego.h"
28 #include "../libcli/auth/ntlmssp.h"
29 #include "ntlmssp_wrap.h"
30 #include "librpc/gen_ndr/messaging.h"
31 #include "../librpc/gen_ndr/krb5pac.h"
32 #include "libads/kerberos_proto.h"
34 /* For split krb5 SPNEGO blobs. */
35 struct pending_auth_data
{
36 struct pending_auth_data
*prev
, *next
;
37 uint16 vuid
; /* Tag for this entry. */
38 uint16 smbpid
; /* Alternate tag for this entry. */
40 DATA_BLOB partial_data
;
44 on a logon error possibly map the error to success if "map to guest"
47 NTSTATUS
do_map_to_guest(NTSTATUS status
,
48 struct auth_serversupplied_info
**server_info
,
49 const char *user
, const char *domain
)
51 user
= user
? user
: "";
52 domain
= domain
? domain
: "";
54 if (NT_STATUS_EQUAL(status
, NT_STATUS_NO_SUCH_USER
)) {
55 if ((lp_map_to_guest() == MAP_TO_GUEST_ON_BAD_USER
) ||
56 (lp_map_to_guest() == MAP_TO_GUEST_ON_BAD_PASSWORD
)) {
57 DEBUG(3,("No such user %s [%s] - using guest account\n",
59 status
= make_server_info_guest(NULL
, server_info
);
63 if (NT_STATUS_EQUAL(status
, NT_STATUS_WRONG_PASSWORD
)) {
64 if (lp_map_to_guest() == MAP_TO_GUEST_ON_BAD_PASSWORD
) {
65 DEBUG(3,("Registered username %s for guest access\n",
67 status
= make_server_info_guest(NULL
, server_info
);
74 /****************************************************************************
75 Add the standard 'Samba' signature to the end of the session setup.
76 ****************************************************************************/
78 static int push_signature(uint8
**outbuf
)
85 tmp
= message_push_string(outbuf
, "Unix", STR_TERMINATE
);
87 if (tmp
== -1) return -1;
90 if (asprintf(&lanman
, "Samba %s", samba_version_string()) != -1) {
91 tmp
= message_push_string(outbuf
, lanman
, STR_TERMINATE
);
95 tmp
= message_push_string(outbuf
, "Samba", STR_TERMINATE
);
98 if (tmp
== -1) return -1;
101 tmp
= message_push_string(outbuf
, lp_workgroup(), STR_TERMINATE
);
103 if (tmp
== -1) return -1;
109 /****************************************************************************
110 Send a security blob via a session setup reply.
111 ****************************************************************************/
113 static void reply_sesssetup_blob(struct smb_request
*req
,
117 if (!NT_STATUS_IS_OK(nt_status
) &&
118 !NT_STATUS_EQUAL(nt_status
, NT_STATUS_MORE_PROCESSING_REQUIRED
)) {
119 reply_nterror(req
, nt_status_squash(nt_status
));
123 nt_status
= nt_status_squash(nt_status
);
124 SIVAL(req
->outbuf
, smb_rcls
, NT_STATUS_V(nt_status
));
125 SSVAL(req
->outbuf
, smb_vwv0
, 0xFF); /* no chaining possible */
126 SSVAL(req
->outbuf
, smb_vwv3
, blob
.length
);
128 if ((message_push_blob(&req
->outbuf
, blob
) == -1)
129 || (push_signature(&req
->outbuf
) == -1)) {
130 reply_nterror(req
, NT_STATUS_NO_MEMORY
);
134 /****************************************************************************
135 Do a 'guest' logon, getting back the
136 ****************************************************************************/
138 static NTSTATUS
check_guest_password(struct auth_serversupplied_info
**server_info
)
140 struct auth_context
*auth_context
;
141 struct auth_usersupplied_info
*user_info
= NULL
;
144 static unsigned char chal
[8] = { 0, };
146 DEBUG(3,("Got anonymous request\n"));
148 nt_status
= make_auth_context_fixed(talloc_tos(), &auth_context
, chal
);
149 if (!NT_STATUS_IS_OK(nt_status
)) {
153 if (!make_user_info_guest(&user_info
)) {
154 TALLOC_FREE(auth_context
);
155 return NT_STATUS_NO_MEMORY
;
158 nt_status
= auth_context
->check_ntlm_password(auth_context
,
161 TALLOC_FREE(auth_context
);
162 free_user_info(&user_info
);
170 /* Experiment that failed. See "only happens with a KDC" comment below. */
171 /****************************************************************************
172 Cerate a clock skew error blob for a Windows client.
173 ****************************************************************************/
175 static bool make_krb5_skew_error(DATA_BLOB
*pblob_out
)
177 krb5_context context
= NULL
;
178 krb5_error_code kerr
= 0;
180 krb5_principal host_princ
= NULL
;
181 char *host_princ_s
= NULL
;
184 *pblob_out
= data_blob_null
;
186 initialize_krb5_error_table();
187 kerr
= krb5_init_context(&context
);
191 /* Create server principal. */
192 asprintf(&host_princ_s
, "%s$@%s", global_myname(), lp_realm());
196 strlower_m(host_princ_s
);
198 kerr
= smb_krb5_parse_name(context
, host_princ_s
, &host_princ
);
200 DEBUG(10,("make_krb5_skew_error: smb_krb5_parse_name failed "
201 "for name %s: Error %s\n",
202 host_princ_s
, error_message(kerr
) ));
206 kerr
= smb_krb5_mk_error(context
, KRB5KRB_AP_ERR_SKEW
,
209 DEBUG(10,("make_krb5_skew_error: smb_krb5_mk_error "
210 "failed: Error %s\n",
211 error_message(kerr
) ));
215 *pblob_out
= data_blob(reply
.data
, reply
.length
);
216 kerberos_free_data_contents(context
,&reply
);
222 SAFE_FREE(host_princ_s
);
225 krb5_free_principal(context
, host_princ
);
227 krb5_free_context(context
);
232 /****************************************************************************
233 Reply to a session setup spnego negotiate packet for kerberos.
234 ****************************************************************************/
236 static void reply_spnego_kerberos(struct smb_request
*req
,
240 bool *p_invalidate_vuid
)
245 int sess_vuid
= req
->vuid
;
246 NTSTATUS ret
= NT_STATUS_OK
;
247 DATA_BLOB ap_rep
, ap_rep_wrapped
, response
;
248 struct auth_serversupplied_info
*server_info
= NULL
;
249 DATA_BLOB session_key
= data_blob_null
;
251 DATA_BLOB nullblob
= data_blob_null
;
252 bool map_domainuser_to_guest
= False
;
253 bool username_was_mapped
;
254 struct PAC_LOGON_INFO
*logon_info
= NULL
;
255 struct smbd_server_connection
*sconn
= req
->sconn
;
263 ZERO_STRUCT(ap_rep_wrapped
);
264 ZERO_STRUCT(response
);
266 /* Normally we will always invalidate the intermediate vuid. */
267 *p_invalidate_vuid
= True
;
269 mem_ctx
= talloc_init("reply_spnego_kerberos");
270 if (mem_ctx
== NULL
) {
271 reply_nterror(req
, nt_status_squash(NT_STATUS_NO_MEMORY
));
275 if (!spnego_parse_krb5_wrap(mem_ctx
, *secblob
, &ticket
, tok_id
)) {
276 talloc_destroy(mem_ctx
);
277 reply_nterror(req
, nt_status_squash(NT_STATUS_LOGON_FAILURE
));
281 ret
= ads_verify_ticket(mem_ctx
, lp_realm(), 0, &ticket
,
282 &principal
, &logon_info
, &ap_rep
,
285 data_blob_free(&ticket
);
287 if (!NT_STATUS_IS_OK(ret
)) {
289 /* Experiment that failed.
290 * See "only happens with a KDC" comment below. */
292 if (NT_STATUS_EQUAL(ret
, NT_STATUS_TIME_DIFFERENCE_AT_DC
)) {
295 * Windows in this case returns
296 * NT_STATUS_MORE_PROCESSING_REQUIRED
297 * with a negTokenTarg blob containing an krb5_error
298 * struct ASN1 encoded containing KRB5KRB_AP_ERR_SKEW.
299 * The client then fixes its clock and continues rather
300 * than giving an error. JRA.
301 * -- Looks like this only happens with a KDC. JRA.
304 bool ok
= make_krb5_skew_error(&ap_rep
);
306 talloc_destroy(mem_ctx
);
307 return ERROR_NT(nt_status_squash(
308 NT_STATUS_LOGON_FAILURE
));
310 ap_rep_wrapped
= spnego_gen_krb5_wrap(ap_rep
,
312 response
= spnego_gen_auth_response(&ap_rep_wrapped
,
313 ret
, OID_KERBEROS5_OLD
);
314 reply_sesssetup_blob(conn
, inbuf
, outbuf
, response
,
315 NT_STATUS_MORE_PROCESSING_REQUIRED
);
318 * In this one case we don't invalidate the
319 * intermediate vuid as we're expecting the client
320 * to re-use it for the next sessionsetupX packet. JRA.
323 *p_invalidate_vuid
= False
;
325 data_blob_free(&ap_rep
);
326 data_blob_free(&ap_rep_wrapped
);
327 data_blob_free(&response
);
328 talloc_destroy(mem_ctx
);
329 return -1; /* already replied */
332 if (!NT_STATUS_EQUAL(ret
, NT_STATUS_TIME_DIFFERENCE_AT_DC
)) {
333 ret
= NT_STATUS_LOGON_FAILURE
;
336 DEBUG(1,("Failed to verify incoming ticket with error %s!\n",
338 talloc_destroy(mem_ctx
);
339 reply_nterror(req
, nt_status_squash(ret
));
343 ret
= get_user_from_kerberos_info(talloc_tos(),
344 sconn
->client_id
.name
,
345 principal
, logon_info
,
346 &username_was_mapped
,
347 &map_domainuser_to_guest
,
349 &real_username
, &pw
);
350 if (!NT_STATUS_IS_OK(ret
)) {
351 data_blob_free(&ap_rep
);
352 data_blob_free(&session_key
);
353 talloc_destroy(mem_ctx
);
354 reply_nterror(req
,nt_status_squash(NT_STATUS_LOGON_FAILURE
));
358 /* save the PAC data if we have it */
360 netsamlogon_cache_store(user
, &logon_info
->info3
);
363 /* setup the string used by %U */
364 sub_set_smb_name(real_username
);
366 /* reload services so that the new %U is taken into account */
367 reload_services(sconn
->msg_ctx
, sconn
->sock
, True
);
369 ret
= make_server_info_krb5(mem_ctx
,
370 user
, domain
, real_username
, pw
,
371 logon_info
, map_domainuser_to_guest
,
373 if (!NT_STATUS_IS_OK(ret
)) {
374 DEBUG(1, ("make_server_info_krb5 failed!\n"));
375 data_blob_free(&ap_rep
);
376 data_blob_free(&session_key
);
377 TALLOC_FREE(mem_ctx
);
378 reply_nterror(req
, nt_status_squash(ret
));
382 server_info
->nss_token
|= username_was_mapped
;
384 /* we need to build the token for the user. make_server_info_guest()
387 if ( !server_info
->ptok
) {
388 ret
= create_local_token( server_info
);
389 if ( !NT_STATUS_IS_OK(ret
) ) {
390 DEBUG(10,("failed to create local token: %s\n",
392 data_blob_free(&ap_rep
);
393 data_blob_free(&session_key
);
394 TALLOC_FREE( mem_ctx
);
395 TALLOC_FREE( server_info
);
396 reply_nterror(req
, nt_status_squash(ret
));
401 if (!is_partial_auth_vuid(sconn
, sess_vuid
)) {
402 sess_vuid
= register_initial_vuid(sconn
);
405 data_blob_free(&server_info
->user_session_key
);
406 /* Set the kerberos-derived session key onto the server_info */
407 server_info
->user_session_key
= session_key
;
408 talloc_steal(server_info
, session_key
.data
);
410 session_key
= data_blob_null
;
412 /* register_existing_vuid keeps the server info */
413 /* register_existing_vuid takes ownership of session_key on success,
414 * no need to free after this on success. A better interface would copy
417 sess_vuid
= register_existing_vuid(sconn
, sess_vuid
,
418 server_info
, nullblob
, user
);
420 reply_outbuf(req
, 4, 0);
421 SSVAL(req
->outbuf
,smb_uid
,sess_vuid
);
423 if (sess_vuid
== UID_FIELD_INVALID
) {
424 ret
= NT_STATUS_LOGON_FAILURE
;
426 /* current_user_info is changed on new vuid */
427 reload_services(sconn
->msg_ctx
, sconn
->sock
, True
);
429 SSVAL(req
->outbuf
, smb_vwv3
, 0);
431 if (server_info
->guest
) {
432 SSVAL(req
->outbuf
,smb_vwv2
,1);
435 SSVAL(req
->outbuf
, smb_uid
, sess_vuid
);
437 /* Successful logon. Keep this vuid. */
438 *p_invalidate_vuid
= False
;
441 /* wrap that up in a nice GSS-API wrapping */
442 if (NT_STATUS_IS_OK(ret
)) {
443 ap_rep_wrapped
= spnego_gen_krb5_wrap(talloc_tos(), ap_rep
,
446 ap_rep_wrapped
= data_blob_null
;
448 response
= spnego_gen_auth_response(talloc_tos(), &ap_rep_wrapped
, ret
,
450 reply_sesssetup_blob(req
, response
, ret
);
452 data_blob_free(&ap_rep
);
453 data_blob_free(&ap_rep_wrapped
);
454 data_blob_free(&response
);
455 TALLOC_FREE(mem_ctx
);
460 /****************************************************************************
461 Send a session setup reply, wrapped in SPNEGO.
462 Get vuid and check first.
463 End the NTLMSSP exchange context if we are OK/complete fail
464 This should be split into two functions, one to handle each
465 leg of the NTLM auth steps.
466 ***************************************************************************/
468 static void reply_spnego_ntlmssp(struct smb_request
*req
,
470 struct auth_ntlmssp_state
**auth_ntlmssp_state
,
471 DATA_BLOB
*ntlmssp_blob
, NTSTATUS nt_status
,
475 bool do_invalidate
= true;
477 struct auth_serversupplied_info
*server_info
= NULL
;
478 struct smbd_server_connection
*sconn
= req
->sconn
;
480 if (NT_STATUS_IS_OK(nt_status
)) {
481 nt_status
= auth_ntlmssp_steal_server_info(talloc_tos(),
482 (*auth_ntlmssp_state
), &server_info
);
484 /* Note that this server_info won't have a session
485 * key. But for map to guest, that's exactly the right
486 * thing - we can't reasonably guess the key the
487 * client wants, as the password was wrong */
488 nt_status
= do_map_to_guest(nt_status
,
490 auth_ntlmssp_get_username(*auth_ntlmssp_state
),
491 auth_ntlmssp_get_domain(*auth_ntlmssp_state
));
494 reply_outbuf(req
, 4, 0);
496 SSVAL(req
->outbuf
, smb_uid
, vuid
);
498 if (NT_STATUS_IS_OK(nt_status
)) {
499 DATA_BLOB nullblob
= data_blob_null
;
501 if (!is_partial_auth_vuid(sconn
, vuid
)) {
502 nt_status
= NT_STATUS_LOGON_FAILURE
;
506 /* register_existing_vuid keeps the server info */
507 if (register_existing_vuid(sconn
, vuid
,
508 server_info
, nullblob
,
509 auth_ntlmssp_get_username(*auth_ntlmssp_state
)) !=
511 /* The problem is, *auth_ntlmssp_state points
512 * into the vuser this will have
513 * talloc_free()'ed in
514 * register_existing_vuid() */
515 do_invalidate
= false;
516 nt_status
= NT_STATUS_LOGON_FAILURE
;
520 /* current_user_info is changed on new vuid */
521 reload_services(sconn
->msg_ctx
, sconn
->sock
, True
);
523 SSVAL(req
->outbuf
, smb_vwv3
, 0);
525 if (server_info
->guest
) {
526 SSVAL(req
->outbuf
,smb_vwv2
,1);
533 response
= spnego_gen_auth_response(talloc_tos(),
537 response
= *ntlmssp_blob
;
540 reply_sesssetup_blob(req
, response
, nt_status
);
542 data_blob_free(&response
);
545 /* NT_STATUS_MORE_PROCESSING_REQUIRED from our NTLMSSP code tells us,
546 and the other end, that we are not finished yet. */
548 if (!NT_STATUS_EQUAL(nt_status
, NT_STATUS_MORE_PROCESSING_REQUIRED
)) {
549 /* NB. This is *NOT* an error case. JRA */
551 TALLOC_FREE(*auth_ntlmssp_state
);
552 if (!NT_STATUS_IS_OK(nt_status
)) {
553 /* Kill the intermediate vuid */
554 invalidate_vuid(sconn
, vuid
);
560 /****************************************************************************
561 Is this a krb5 mechanism ?
562 ****************************************************************************/
564 NTSTATUS
parse_spnego_mechanisms(TALLOC_CTX
*ctx
,
566 DATA_BLOB
*pblob_out
,
569 char *OIDs
[ASN1_MAX_OIDS
];
571 NTSTATUS ret
= NT_STATUS_OK
;
573 *kerb_mechOID
= NULL
;
575 /* parse out the OIDs and the first sec blob */
576 if (!spnego_parse_negTokenInit(ctx
, blob_in
, OIDs
, NULL
, pblob_out
) ||
578 return NT_STATUS_LOGON_FAILURE
;
581 /* only look at the first OID for determining the mechToken --
582 according to RFC2478, we should choose the one we want
583 and renegotiate, but i smell a client bug here..
585 Problem observed when connecting to a member (samba box)
586 of an AD domain as a user in a Samba domain. Samba member
587 server sent back krb5/mskrb5/ntlmssp as mechtypes, but the
588 client (2ksp3) replied with ntlmssp/mskrb5/krb5 and an
589 NTLMSSP mechtoken. --jerry */
592 if (strcmp(OID_KERBEROS5
, OIDs
[0]) == 0 ||
593 strcmp(OID_KERBEROS5_OLD
, OIDs
[0]) == 0) {
594 *kerb_mechOID
= talloc_strdup(ctx
, OIDs
[0]);
595 if (*kerb_mechOID
== NULL
) {
596 ret
= NT_STATUS_NO_MEMORY
;
601 for (i
=0;OIDs
[i
];i
++) {
602 DEBUG(5,("parse_spnego_mechanisms: Got OID %s\n", OIDs
[i
]));
603 talloc_free(OIDs
[i
]);
608 /****************************************************************************
609 Fall back from krb5 to NTLMSSP.
610 ****************************************************************************/
612 static void reply_spnego_downgrade_to_ntlmssp(struct smb_request
*req
,
617 reply_outbuf(req
, 4, 0);
618 SSVAL(req
->outbuf
,smb_uid
,vuid
);
620 DEBUG(3,("reply_spnego_downgrade_to_ntlmssp: Got krb5 ticket in SPNEGO "
621 "but set to downgrade to NTLMSSP\n"));
623 response
= spnego_gen_auth_response(talloc_tos(), NULL
,
624 NT_STATUS_MORE_PROCESSING_REQUIRED
,
626 reply_sesssetup_blob(req
, response
, NT_STATUS_MORE_PROCESSING_REQUIRED
);
627 data_blob_free(&response
);
630 /****************************************************************************
631 Reply to a session setup spnego negotiate packet.
632 ****************************************************************************/
634 static void reply_spnego_negotiate(struct smb_request
*req
,
637 struct auth_ntlmssp_state
**auth_ntlmssp_state
)
641 char *kerb_mech
= NULL
;
643 struct smbd_server_connection
*sconn
= req
->sconn
;
645 status
= parse_spnego_mechanisms(talloc_tos(),
646 blob1
, &secblob
, &kerb_mech
);
647 if (!NT_STATUS_IS_OK(status
)) {
648 /* Kill the intermediate vuid */
649 invalidate_vuid(sconn
, vuid
);
650 reply_nterror(req
, nt_status_squash(status
));
654 DEBUG(3,("reply_spnego_negotiate: Got secblob of size %lu\n",
655 (unsigned long)secblob
.length
));
658 if (kerb_mech
&& ((lp_security()==SEC_ADS
) ||
659 USE_KERBEROS_KEYTAB
) ) {
660 bool destroy_vuid
= True
;
661 reply_spnego_kerberos(req
, &secblob
, kerb_mech
,
662 vuid
, &destroy_vuid
);
663 data_blob_free(&secblob
);
665 /* Kill the intermediate vuid */
666 invalidate_vuid(sconn
, vuid
);
668 TALLOC_FREE(kerb_mech
);
673 if (*auth_ntlmssp_state
) {
674 TALLOC_FREE(*auth_ntlmssp_state
);
678 data_blob_free(&secblob
);
679 /* The mechtoken is a krb5 ticket, but
680 * we need to fall back to NTLM. */
681 reply_spnego_downgrade_to_ntlmssp(req
, vuid
);
682 TALLOC_FREE(kerb_mech
);
686 status
= auth_ntlmssp_start(auth_ntlmssp_state
);
687 if (!NT_STATUS_IS_OK(status
)) {
688 /* Kill the intermediate vuid */
689 invalidate_vuid(sconn
, vuid
);
690 reply_nterror(req
, nt_status_squash(status
));
694 status
= auth_ntlmssp_update(*auth_ntlmssp_state
,
697 data_blob_free(&secblob
);
699 reply_spnego_ntlmssp(req
, vuid
, auth_ntlmssp_state
,
700 &chal
, status
, OID_NTLMSSP
, true);
702 data_blob_free(&chal
);
704 /* already replied */
708 /****************************************************************************
709 Reply to a session setup spnego auth packet.
710 ****************************************************************************/
712 static void reply_spnego_auth(struct smb_request
*req
,
715 struct auth_ntlmssp_state
**auth_ntlmssp_state
)
717 DATA_BLOB auth
= data_blob_null
;
718 DATA_BLOB auth_reply
= data_blob_null
;
719 DATA_BLOB secblob
= data_blob_null
;
720 NTSTATUS status
= NT_STATUS_LOGON_FAILURE
;
721 struct smbd_server_connection
*sconn
= req
->sconn
;
723 if (!spnego_parse_auth(talloc_tos(), blob1
, &auth
)) {
725 file_save("auth.dat", blob1
.data
, blob1
.length
);
727 /* Kill the intermediate vuid */
728 invalidate_vuid(sconn
, vuid
);
730 reply_nterror(req
, nt_status_squash(
731 NT_STATUS_LOGON_FAILURE
));
735 if (auth
.data
[0] == ASN1_APPLICATION(0)) {
736 /* Might be a second negTokenTarg packet */
737 char *kerb_mech
= NULL
;
739 status
= parse_spnego_mechanisms(talloc_tos(),
740 auth
, &secblob
, &kerb_mech
);
742 if (!NT_STATUS_IS_OK(status
)) {
743 /* Kill the intermediate vuid */
744 invalidate_vuid(sconn
, vuid
);
745 reply_nterror(req
, nt_status_squash(status
));
749 DEBUG(3,("reply_spnego_auth: Got secblob of size %lu\n",
750 (unsigned long)secblob
.length
));
752 if (kerb_mech
&& ((lp_security()==SEC_ADS
) ||
753 USE_KERBEROS_KEYTAB
)) {
754 bool destroy_vuid
= True
;
755 reply_spnego_kerberos(req
, &secblob
, kerb_mech
,
756 vuid
, &destroy_vuid
);
757 data_blob_free(&secblob
);
758 data_blob_free(&auth
);
760 /* Kill the intermediate vuid */
761 invalidate_vuid(sconn
, vuid
);
763 TALLOC_FREE(kerb_mech
);
767 /* Can't blunder into NTLMSSP auth if we have
771 /* Kill the intermediate vuid */
772 invalidate_vuid(sconn
, vuid
);
773 DEBUG(3,("reply_spnego_auth: network "
774 "misconfiguration, client sent us a "
775 "krb5 ticket and kerberos security "
777 reply_nterror(req
, nt_status_squash(
778 NT_STATUS_LOGON_FAILURE
));
779 TALLOC_FREE(kerb_mech
);
783 /* If we get here it wasn't a negTokenTarg auth packet. */
784 data_blob_free(&secblob
);
786 if (!*auth_ntlmssp_state
) {
787 status
= auth_ntlmssp_start(auth_ntlmssp_state
);
788 if (!NT_STATUS_IS_OK(status
)) {
789 /* Kill the intermediate vuid */
790 invalidate_vuid(sconn
, vuid
);
791 reply_nterror(req
, nt_status_squash(status
));
796 status
= auth_ntlmssp_update(*auth_ntlmssp_state
,
799 data_blob_free(&auth
);
801 /* Don't send the mechid as we've already sent this (RFC4178). */
803 reply_spnego_ntlmssp(req
, vuid
,
805 &auth_reply
, status
, NULL
, true);
807 data_blob_free(&auth_reply
);
809 /* and tell smbd that we have already replied to this packet */
813 /****************************************************************************
814 Delete an entry on the list.
815 ****************************************************************************/
817 static void delete_partial_auth(struct smbd_server_connection
*sconn
,
818 struct pending_auth_data
*pad
)
823 DLIST_REMOVE(sconn
->smb1
.pd_list
, pad
);
824 data_blob_free(&pad
->partial_data
);
828 /****************************************************************************
829 Search for a partial SPNEGO auth fragment matching an smbpid.
830 ****************************************************************************/
832 static struct pending_auth_data
*get_pending_auth_data(
833 struct smbd_server_connection
*sconn
,
836 struct pending_auth_data
*pad
;
838 * NOTE: using the smbpid here is completely wrong...
840 * 3.3.5.3 Receiving an SMB_COM_SESSION_SETUP_ANDX Request
842 for (pad
= sconn
->smb1
.pd_list
; pad
; pad
= pad
->next
) {
843 if (pad
->smbpid
== smbpid
) {
850 /****************************************************************************
851 Check the size of an SPNEGO blob. If we need more return
852 NT_STATUS_MORE_PROCESSING_REQUIRED, else return NT_STATUS_OK. Don't allow
853 the blob to be more than 64k.
854 ****************************************************************************/
856 static NTSTATUS
check_spnego_blob_complete(struct smbd_server_connection
*sconn
,
857 uint16 smbpid
, uint16 vuid
,
860 struct pending_auth_data
*pad
= NULL
;
862 size_t needed_len
= 0;
864 pad
= get_pending_auth_data(sconn
, smbpid
);
866 /* Ensure we have some data. */
867 if (pblob
->length
== 0) {
868 /* Caller can cope. */
869 DEBUG(2,("check_spnego_blob_complete: zero blob length !\n"));
870 delete_partial_auth(sconn
, pad
);
874 /* Were we waiting for more data ? */
877 size_t copy_len
= MIN(65536, pblob
->length
);
879 /* Integer wrap paranoia.... */
881 if (pad
->partial_data
.length
+ copy_len
<
882 pad
->partial_data
.length
||
883 pad
->partial_data
.length
+ copy_len
< copy_len
) {
885 DEBUG(2,("check_spnego_blob_complete: integer wrap "
886 "pad->partial_data.length = %u, "
888 (unsigned int)pad
->partial_data
.length
,
889 (unsigned int)copy_len
));
891 delete_partial_auth(sconn
, pad
);
892 return NT_STATUS_INVALID_PARAMETER
;
895 DEBUG(10,("check_spnego_blob_complete: "
896 "pad->partial_data.length = %u, "
897 "pad->needed_len = %u, "
899 "pblob->length = %u,\n",
900 (unsigned int)pad
->partial_data
.length
,
901 (unsigned int)pad
->needed_len
,
902 (unsigned int)copy_len
,
903 (unsigned int)pblob
->length
));
905 tmp_blob
= data_blob(NULL
,
906 pad
->partial_data
.length
+ copy_len
);
908 /* Concatenate the two (up to copy_len) bytes. */
909 memcpy(tmp_blob
.data
,
910 pad
->partial_data
.data
,
911 pad
->partial_data
.length
);
912 memcpy(tmp_blob
.data
+ pad
->partial_data
.length
,
916 /* Replace the partial data. */
917 data_blob_free(&pad
->partial_data
);
918 pad
->partial_data
= tmp_blob
;
919 ZERO_STRUCT(tmp_blob
);
922 if (pblob
->length
>= pad
->needed_len
) {
923 /* Yes, replace pblob. */
924 data_blob_free(pblob
);
925 *pblob
= pad
->partial_data
;
926 ZERO_STRUCT(pad
->partial_data
);
927 delete_partial_auth(sconn
, pad
);
931 /* Still need more data. */
932 pad
->needed_len
-= copy_len
;
933 return NT_STATUS_MORE_PROCESSING_REQUIRED
;
936 if ((pblob
->data
[0] != ASN1_APPLICATION(0)) &&
937 (pblob
->data
[0] != ASN1_CONTEXT(1))) {
938 /* Not something we can determine the
944 /* This is a new SPNEGO sessionsetup - see if
945 * the data given in this blob is enough.
948 data
= asn1_init(NULL
);
950 return NT_STATUS_NO_MEMORY
;
953 asn1_load(data
, *pblob
);
954 asn1_start_tag(data
, pblob
->data
[0]);
955 if (data
->has_error
|| data
->nesting
== NULL
) {
957 /* Let caller catch. */
961 /* Integer wrap paranoia.... */
963 if (data
->nesting
->taglen
+ data
->nesting
->start
< data
->nesting
->taglen
||
964 data
->nesting
->taglen
+ data
->nesting
->start
< data
->nesting
->start
) {
966 DEBUG(2,("check_spnego_blob_complete: integer wrap "
967 "data.nesting->taglen = %u, "
968 "data.nesting->start = %u\n",
969 (unsigned int)data
->nesting
->taglen
,
970 (unsigned int)data
->nesting
->start
));
973 return NT_STATUS_INVALID_PARAMETER
;
976 /* Total length of the needed asn1 is the tag length
977 * plus the current offset. */
979 needed_len
= data
->nesting
->taglen
+ data
->nesting
->start
;
982 DEBUG(10,("check_spnego_blob_complete: needed_len = %u, "
983 "pblob->length = %u\n",
984 (unsigned int)needed_len
,
985 (unsigned int)pblob
->length
));
987 if (needed_len
<= pblob
->length
) {
988 /* Nothing to do - blob is complete. */
992 /* Refuse the blob if it's bigger than 64k. */
993 if (needed_len
> 65536) {
994 DEBUG(2,("check_spnego_blob_complete: needed_len "
996 (unsigned int)needed_len
));
997 return NT_STATUS_INVALID_PARAMETER
;
1000 /* We must store this blob until complete. */
1001 if (!(pad
= SMB_MALLOC_P(struct pending_auth_data
))) {
1002 return NT_STATUS_NO_MEMORY
;
1004 pad
->needed_len
= needed_len
- pblob
->length
;
1005 pad
->partial_data
= data_blob(pblob
->data
, pblob
->length
);
1006 if (pad
->partial_data
.data
== NULL
) {
1008 return NT_STATUS_NO_MEMORY
;
1010 pad
->smbpid
= smbpid
;
1012 DLIST_ADD(sconn
->smb1
.pd_list
, pad
);
1014 return NT_STATUS_MORE_PROCESSING_REQUIRED
;
1017 /****************************************************************************
1018 Reply to a session setup command.
1019 conn POINTER CAN BE NULL HERE !
1020 ****************************************************************************/
1022 static void reply_sesssetup_and_X_spnego(struct smb_request
*req
)
1028 const char *native_os
;
1029 const char *native_lanman
;
1030 const char *primary_domain
;
1032 uint16 data_blob_len
= SVAL(req
->vwv
+7, 0);
1033 enum remote_arch_types ra_type
= get_remote_arch();
1034 int vuid
= req
->vuid
;
1035 user_struct
*vuser
= NULL
;
1036 NTSTATUS status
= NT_STATUS_OK
;
1037 uint16 smbpid
= req
->smbpid
;
1038 struct smbd_server_connection
*sconn
= req
->sconn
;
1040 DEBUG(3,("Doing spnego session setup\n"));
1042 if (global_client_caps
== 0) {
1043 global_client_caps
= IVAL(req
->vwv
+10, 0);
1045 if (!(global_client_caps
& CAP_STATUS32
)) {
1046 remove_from_common_flags2(FLAGS2_32_BIT_ERROR_CODES
);
1053 if (data_blob_len
== 0) {
1054 /* an invalid request */
1055 reply_nterror(req
, nt_status_squash(NT_STATUS_LOGON_FAILURE
));
1059 bufrem
= smbreq_bufrem(req
, p
);
1060 /* pull the spnego blob */
1061 blob1
= data_blob(p
, MIN(bufrem
, data_blob_len
));
1064 file_save("negotiate.dat", blob1
.data
, blob1
.length
);
1067 p2
= (char *)req
->buf
+ blob1
.length
;
1069 p2
+= srvstr_pull_req_talloc(talloc_tos(), req
, &tmp
, p2
,
1071 native_os
= tmp
? tmp
: "";
1073 p2
+= srvstr_pull_req_talloc(talloc_tos(), req
, &tmp
, p2
,
1075 native_lanman
= tmp
? tmp
: "";
1077 p2
+= srvstr_pull_req_talloc(talloc_tos(), req
, &tmp
, p2
,
1079 primary_domain
= tmp
? tmp
: "";
1081 DEBUG(3,("NativeOS=[%s] NativeLanMan=[%s] PrimaryDomain=[%s]\n",
1082 native_os
, native_lanman
, primary_domain
));
1084 if ( ra_type
== RA_WIN2K
) {
1085 /* Vista sets neither the OS or lanman strings */
1087 if ( !strlen(native_os
) && !strlen(native_lanman
) )
1088 set_remote_arch(RA_VISTA
);
1090 /* Windows 2003 doesn't set the native lanman string,
1091 but does set primary domain which is a bug I think */
1093 if ( !strlen(native_lanman
) ) {
1094 ra_lanman_string( primary_domain
);
1096 ra_lanman_string( native_lanman
);
1100 /* Did we get a valid vuid ? */
1101 if (!is_partial_auth_vuid(sconn
, vuid
)) {
1102 /* No, then try and see if this is an intermediate sessionsetup
1103 * for a large SPNEGO packet. */
1104 struct pending_auth_data
*pad
;
1105 pad
= get_pending_auth_data(sconn
, smbpid
);
1107 DEBUG(10,("reply_sesssetup_and_X_spnego: found "
1108 "pending vuid %u\n",
1109 (unsigned int)pad
->vuid
));
1114 /* Do we have a valid vuid now ? */
1115 if (!is_partial_auth_vuid(sconn
, vuid
)) {
1116 /* No, start a new authentication setup. */
1117 vuid
= register_initial_vuid(sconn
);
1118 if (vuid
== UID_FIELD_INVALID
) {
1119 data_blob_free(&blob1
);
1120 reply_nterror(req
, nt_status_squash(
1121 NT_STATUS_INVALID_PARAMETER
));
1126 vuser
= get_partial_auth_user_struct(sconn
, vuid
);
1127 /* This MUST be valid. */
1129 smb_panic("reply_sesssetup_and_X_spnego: invalid vuid.");
1132 /* Large (greater than 4k) SPNEGO blobs are split into multiple
1133 * sessionsetup requests as the Windows limit on the security blob
1134 * field is 4k. Bug #4400. JRA.
1137 status
= check_spnego_blob_complete(sconn
, smbpid
, vuid
, &blob1
);
1138 if (!NT_STATUS_IS_OK(status
)) {
1139 if (!NT_STATUS_EQUAL(status
,
1140 NT_STATUS_MORE_PROCESSING_REQUIRED
)) {
1141 /* Real error - kill the intermediate vuid */
1142 invalidate_vuid(sconn
, vuid
);
1144 data_blob_free(&blob1
);
1145 reply_nterror(req
, nt_status_squash(status
));
1149 if (blob1
.data
[0] == ASN1_APPLICATION(0)) {
1151 /* its a negTokenTarg packet */
1153 reply_spnego_negotiate(req
, vuid
, blob1
,
1154 &vuser
->auth_ntlmssp_state
);
1155 data_blob_free(&blob1
);
1159 if (blob1
.data
[0] == ASN1_CONTEXT(1)) {
1161 /* its a auth packet */
1163 reply_spnego_auth(req
, vuid
, blob1
,
1164 &vuser
->auth_ntlmssp_state
);
1165 data_blob_free(&blob1
);
1169 if (strncmp((char *)(blob1
.data
), "NTLMSSP", 7) == 0) {
1172 if (!vuser
->auth_ntlmssp_state
) {
1173 status
= auth_ntlmssp_start(&vuser
->auth_ntlmssp_state
);
1174 if (!NT_STATUS_IS_OK(status
)) {
1175 /* Kill the intermediate vuid */
1176 invalidate_vuid(sconn
, vuid
);
1177 data_blob_free(&blob1
);
1178 reply_nterror(req
, nt_status_squash(status
));
1183 status
= auth_ntlmssp_update(vuser
->auth_ntlmssp_state
,
1186 data_blob_free(&blob1
);
1188 reply_spnego_ntlmssp(req
, vuid
,
1189 &vuser
->auth_ntlmssp_state
,
1190 &chal
, status
, OID_NTLMSSP
, false);
1191 data_blob_free(&chal
);
1195 /* what sort of packet is this? */
1196 DEBUG(1,("Unknown packet in reply_sesssetup_and_X_spnego\n"));
1198 data_blob_free(&blob1
);
1200 reply_nterror(req
, nt_status_squash(NT_STATUS_LOGON_FAILURE
));
1203 /****************************************************************************
1204 On new VC == 0, shutdown *all* old connections and users.
1205 It seems that only NT4.x does this. At W2K and above (XP etc.).
1206 a new session setup with VC==0 is ignored.
1207 ****************************************************************************/
1209 struct shutdown_state
{
1211 struct messaging_context
*msg_ctx
;
1214 static int shutdown_other_smbds(const struct connections_key
*key
,
1215 const struct connections_data
*crec
,
1218 struct shutdown_state
*state
= (struct shutdown_state
*)private_data
;
1220 DEBUG(10, ("shutdown_other_smbds: %s, %s\n",
1221 procid_str(talloc_tos(), &crec
->pid
), crec
->addr
));
1223 if (!process_exists(crec
->pid
)) {
1224 DEBUG(10, ("process does not exist\n"));
1228 if (procid_is_me(&crec
->pid
)) {
1229 DEBUG(10, ("It's me\n"));
1233 if (strcmp(state
->ip
, crec
->addr
) != 0) {
1234 DEBUG(10, ("%s does not match %s\n", state
->ip
, crec
->addr
));
1238 DEBUG(1, ("shutdown_other_smbds: shutting down pid %u "
1239 "(IP %s)\n", (unsigned int)procid_to_pid(&crec
->pid
),
1242 messaging_send(state
->msg_ctx
, crec
->pid
, MSG_SHUTDOWN
,
1247 static void setup_new_vc_session(struct smbd_server_connection
*sconn
)
1249 DEBUG(2,("setup_new_vc_session: New VC == 0, if NT4.x "
1250 "compatible we would close all old resources.\n"));
1253 invalidate_all_vuids();
1255 if (lp_reset_on_zero_vc()) {
1257 struct shutdown_state state
;
1259 addr
= tsocket_address_inet_addr_string(
1260 sconn
->remote_address
, talloc_tos());
1265 state
.msg_ctx
= sconn
->msg_ctx
;
1266 connections_forall_read(shutdown_other_smbds
, &state
);
1271 /****************************************************************************
1272 Reply to a session setup command.
1273 ****************************************************************************/
1275 void reply_sesssetup_and_X(struct smb_request
*req
)
1281 DATA_BLOB plaintext_password
;
1284 fstring sub_user
; /* Sanitised username for substituion */
1286 const char *native_os
;
1287 const char *native_lanman
;
1288 const char *primary_domain
;
1289 struct auth_usersupplied_info
*user_info
= NULL
;
1290 struct auth_serversupplied_info
*server_info
= NULL
;
1291 uint16 smb_flag2
= req
->flags2
;
1294 struct smbd_server_connection
*sconn
= req
->sconn
;
1296 bool doencrypt
= sconn
->smb1
.negprot
.encrypted_passwords
;
1298 START_PROFILE(SMBsesssetupX
);
1300 ZERO_STRUCT(lm_resp
);
1301 ZERO_STRUCT(nt_resp
);
1302 ZERO_STRUCT(plaintext_password
);
1304 DEBUG(3,("wct=%d flg2=0x%x\n", req
->wct
, req
->flags2
));
1306 /* a SPNEGO session setup has 12 command words, whereas a normal
1307 NT1 session setup has 13. See the cifs spec. */
1308 if (req
->wct
== 12 &&
1309 (req
->flags2
& FLAGS2_EXTENDED_SECURITY
)) {
1311 if (!sconn
->smb1
.negprot
.spnego
) {
1312 DEBUG(0,("reply_sesssetup_and_X: Rejecting attempt "
1313 "at SPNEGO session setup when it was not "
1315 reply_nterror(req
, nt_status_squash(
1316 NT_STATUS_LOGON_FAILURE
));
1317 END_PROFILE(SMBsesssetupX
);
1321 if (SVAL(req
->vwv
+4, 0) == 0) {
1322 setup_new_vc_session(req
->sconn
);
1325 reply_sesssetup_and_X_spnego(req
);
1326 END_PROFILE(SMBsesssetupX
);
1330 smb_bufsize
= SVAL(req
->vwv
+2, 0);
1332 if (get_Protocol() < PROTOCOL_NT1
) {
1333 uint16 passlen1
= SVAL(req
->vwv
+7, 0);
1335 /* Never do NT status codes with protocols before NT1 as we
1336 * don't get client caps. */
1337 remove_from_common_flags2(FLAGS2_32_BIT_ERROR_CODES
);
1339 if ((passlen1
> MAX_PASS_LEN
) || (passlen1
> req
->buflen
)) {
1340 reply_nterror(req
, nt_status_squash(
1341 NT_STATUS_INVALID_PARAMETER
));
1342 END_PROFILE(SMBsesssetupX
);
1347 lm_resp
= data_blob(req
->buf
, passlen1
);
1349 plaintext_password
= data_blob(req
->buf
, passlen1
+1);
1350 /* Ensure null termination */
1351 plaintext_password
.data
[passlen1
] = 0;
1354 srvstr_pull_req_talloc(talloc_tos(), req
, &tmp
,
1355 req
->buf
+ passlen1
, STR_TERMINATE
);
1356 user
= tmp
? tmp
: "";
1361 uint16 passlen1
= SVAL(req
->vwv
+7, 0);
1362 uint16 passlen2
= SVAL(req
->vwv
+8, 0);
1363 enum remote_arch_types ra_type
= get_remote_arch();
1364 const uint8_t *p
= req
->buf
;
1365 const uint8_t *save_p
= req
->buf
;
1369 if(global_client_caps
== 0) {
1370 global_client_caps
= IVAL(req
->vwv
+11, 0);
1372 if (!(global_client_caps
& CAP_STATUS32
)) {
1373 remove_from_common_flags2(
1374 FLAGS2_32_BIT_ERROR_CODES
);
1377 /* client_caps is used as final determination if
1378 * client is NT or Win95. This is needed to return
1379 * the correct error codes in some circumstances.
1382 if(ra_type
== RA_WINNT
|| ra_type
== RA_WIN2K
||
1383 ra_type
== RA_WIN95
) {
1384 if(!(global_client_caps
& (CAP_NT_SMBS
|
1386 set_remote_arch( RA_WIN95
);
1392 /* both Win95 and WinNT stuff up the password
1393 * lengths for non-encrypting systems. Uggh.
1395 if passlen1==24 its a win95 system, and its setting
1396 the password length incorrectly. Luckily it still
1397 works with the default code because Win95 will null
1398 terminate the password anyway
1400 if passlen1>0 and passlen2>0 then maybe its a NT box
1401 and its setting passlen2 to some random value which
1402 really stuffs things up. we need to fix that one. */
1404 if (passlen1
> 0 && passlen2
> 0 && passlen2
!= 24 &&
1410 /* check for nasty tricks */
1411 if (passlen1
> MAX_PASS_LEN
1412 || passlen1
> smbreq_bufrem(req
, p
)) {
1413 reply_nterror(req
, nt_status_squash(
1414 NT_STATUS_INVALID_PARAMETER
));
1415 END_PROFILE(SMBsesssetupX
);
1419 if (passlen2
> MAX_PASS_LEN
1420 || passlen2
> smbreq_bufrem(req
, p
+passlen1
)) {
1421 reply_nterror(req
, nt_status_squash(
1422 NT_STATUS_INVALID_PARAMETER
));
1423 END_PROFILE(SMBsesssetupX
);
1427 /* Save the lanman2 password and the NT md4 password. */
1429 if ((doencrypt
) && (passlen1
!= 0) && (passlen1
!= 24)) {
1434 lm_resp
= data_blob(p
, passlen1
);
1435 nt_resp
= data_blob(p
+passlen1
, passlen2
);
1436 } else if (lp_security() != SEC_SHARE
) {
1438 * In share level we should ignore any passwords, so
1439 * only read them if we're not.
1442 bool unic
= smb_flag2
& FLAGS2_UNICODE_STRINGS
;
1444 if (unic
&& (passlen2
== 0) && passlen1
) {
1445 /* Only a ascii plaintext password was sent. */
1446 (void)srvstr_pull_talloc(talloc_tos(),
1452 STR_TERMINATE
|STR_ASCII
);
1454 (void)srvstr_pull_talloc(talloc_tos(),
1459 unic
? passlen2
: passlen1
,
1463 reply_nterror(req
, nt_status_squash(
1464 NT_STATUS_INVALID_PARAMETER
));
1465 END_PROFILE(SMBsesssetupX
);
1468 plaintext_password
= data_blob(pass
, strlen(pass
)+1);
1471 p
+= passlen1
+ passlen2
;
1473 p
+= srvstr_pull_req_talloc(talloc_tos(), req
, &tmp
, p
,
1475 user
= tmp
? tmp
: "";
1477 p
+= srvstr_pull_req_talloc(talloc_tos(), req
, &tmp
, p
,
1479 domain
= tmp
? tmp
: "";
1481 p
+= srvstr_pull_req_talloc(talloc_tos(), req
, &tmp
, p
,
1483 native_os
= tmp
? tmp
: "";
1485 p
+= srvstr_pull_req_talloc(talloc_tos(), req
, &tmp
, p
,
1487 native_lanman
= tmp
? tmp
: "";
1489 /* not documented or decoded by Ethereal but there is one more
1490 * string in the extra bytes which is the same as the
1491 * PrimaryDomain when using extended security. Windows NT 4
1492 * and 2003 use this string to store the native lanman string.
1493 * Windows 9x does not include a string here at all so we have
1494 * to check if we have any extra bytes left */
1496 byte_count
= SVAL(req
->vwv
+13, 0);
1497 if ( PTR_DIFF(p
, save_p
) < byte_count
) {
1498 p
+= srvstr_pull_req_talloc(talloc_tos(), req
, &tmp
, p
,
1500 primary_domain
= tmp
? tmp
: "";
1502 primary_domain
= talloc_strdup(talloc_tos(), "null");
1505 DEBUG(3,("Domain=[%s] NativeOS=[%s] NativeLanMan=[%s] "
1506 "PrimaryDomain=[%s]\n",
1507 domain
, native_os
, native_lanman
, primary_domain
));
1509 if ( ra_type
== RA_WIN2K
) {
1510 if ( strlen(native_lanman
) == 0 )
1511 ra_lanman_string( primary_domain
);
1513 ra_lanman_string( native_lanman
);
1518 if (SVAL(req
->vwv
+4, 0) == 0) {
1519 setup_new_vc_session(req
->sconn
);
1522 DEBUG(3,("sesssetupX:name=[%s]\\[%s]@[%s]\n",
1523 domain
, user
, get_remote_machine_name()));
1526 if (sconn
->smb1
.negprot
.spnego
) {
1528 /* This has to be here, because this is a perfectly
1529 * valid behaviour for guest logons :-( */
1531 DEBUG(0,("reply_sesssetup_and_X: Rejecting attempt "
1532 "at 'normal' session setup after "
1533 "negotiating spnego.\n"));
1534 reply_nterror(req
, nt_status_squash(
1535 NT_STATUS_LOGON_FAILURE
));
1536 END_PROFILE(SMBsesssetupX
);
1539 fstrcpy(sub_user
, user
);
1541 fstrcpy(sub_user
, lp_guestaccount());
1544 sub_set_smb_name(sub_user
);
1546 reload_services(sconn
->msg_ctx
, sconn
->sock
, True
);
1548 if (lp_security() == SEC_SHARE
) {
1549 char *sub_user_mapped
= NULL
;
1550 /* In share level we should ignore any passwords */
1552 data_blob_free(&lm_resp
);
1553 data_blob_free(&nt_resp
);
1554 data_blob_clear_free(&plaintext_password
);
1556 (void)map_username(talloc_tos(), sub_user
, &sub_user_mapped
);
1557 if (!sub_user_mapped
) {
1558 reply_nterror(req
, NT_STATUS_NO_MEMORY
);
1559 END_PROFILE(SMBsesssetupX
);
1562 fstrcpy(sub_user
, sub_user_mapped
);
1563 add_session_user(sconn
, sub_user
);
1564 add_session_workgroup(sconn
, domain
);
1565 /* Then force it to null for the benfit of the code below */
1571 nt_status
= check_guest_password(&server_info
);
1573 } else if (doencrypt
) {
1574 struct auth_context
*negprot_auth_context
= NULL
;
1575 negprot_auth_context
= sconn
->smb1
.negprot
.auth_context
;
1576 if (!negprot_auth_context
) {
1577 DEBUG(0, ("reply_sesssetup_and_X: Attempted encrypted "
1578 "session setup without negprot denied!\n"));
1579 reply_nterror(req
, nt_status_squash(
1580 NT_STATUS_LOGON_FAILURE
));
1581 END_PROFILE(SMBsesssetupX
);
1584 nt_status
= make_user_info_for_reply_enc(&user_info
, user
,
1587 if (NT_STATUS_IS_OK(nt_status
)) {
1588 nt_status
= negprot_auth_context
->check_ntlm_password(
1589 negprot_auth_context
,
1594 struct auth_context
*plaintext_auth_context
= NULL
;
1596 nt_status
= make_auth_context_subsystem(
1597 talloc_tos(), &plaintext_auth_context
);
1599 if (NT_STATUS_IS_OK(nt_status
)) {
1602 plaintext_auth_context
->get_ntlm_challenge(
1603 plaintext_auth_context
, chal
);
1605 if (!make_user_info_for_reply(&user_info
,
1607 plaintext_password
)) {
1608 nt_status
= NT_STATUS_NO_MEMORY
;
1611 if (NT_STATUS_IS_OK(nt_status
)) {
1612 nt_status
= plaintext_auth_context
->check_ntlm_password(
1613 plaintext_auth_context
,
1617 TALLOC_FREE(plaintext_auth_context
);
1622 free_user_info(&user_info
);
1624 if (!NT_STATUS_IS_OK(nt_status
)) {
1625 nt_status
= do_map_to_guest(nt_status
, &server_info
,
1629 if (!NT_STATUS_IS_OK(nt_status
)) {
1630 data_blob_free(&nt_resp
);
1631 data_blob_free(&lm_resp
);
1632 data_blob_clear_free(&plaintext_password
);
1633 reply_nterror(req
, nt_status_squash(nt_status
));
1634 END_PROFILE(SMBsesssetupX
);
1638 /* Ensure we can't possible take a code path leading to a
1641 reply_nterror(req
, nt_status_squash(NT_STATUS_LOGON_FAILURE
));
1642 END_PROFILE(SMBsesssetupX
);
1646 if (!server_info
->ptok
) {
1647 nt_status
= create_local_token(server_info
);
1649 if (!NT_STATUS_IS_OK(nt_status
)) {
1650 DEBUG(10, ("create_local_token failed: %s\n",
1651 nt_errstr(nt_status
)));
1652 data_blob_free(&nt_resp
);
1653 data_blob_free(&lm_resp
);
1654 data_blob_clear_free(&plaintext_password
);
1655 reply_nterror(req
, nt_status_squash(nt_status
));
1656 END_PROFILE(SMBsesssetupX
);
1661 data_blob_clear_free(&plaintext_password
);
1663 /* it's ok - setup a reply */
1664 reply_outbuf(req
, 3, 0);
1665 if (get_Protocol() >= PROTOCOL_NT1
) {
1666 push_signature(&req
->outbuf
);
1667 /* perhaps grab OS version here?? */
1670 if (server_info
->guest
) {
1671 SSVAL(req
->outbuf
,smb_vwv2
,1);
1674 /* register the name and uid as being validated, so further connections
1675 to a uid can get through without a password, on the same VC */
1677 if (lp_security() == SEC_SHARE
) {
1678 sess_vuid
= UID_FIELD_INVALID
;
1679 TALLOC_FREE(server_info
);
1681 /* Ignore the initial vuid. */
1682 sess_vuid
= register_initial_vuid(sconn
);
1683 if (sess_vuid
== UID_FIELD_INVALID
) {
1684 data_blob_free(&nt_resp
);
1685 data_blob_free(&lm_resp
);
1686 reply_nterror(req
, nt_status_squash(
1687 NT_STATUS_LOGON_FAILURE
));
1688 END_PROFILE(SMBsesssetupX
);
1691 /* register_existing_vuid keeps the server info */
1692 sess_vuid
= register_existing_vuid(sconn
, sess_vuid
,
1694 nt_resp
.data
? nt_resp
: lm_resp
,
1696 if (sess_vuid
== UID_FIELD_INVALID
) {
1697 data_blob_free(&nt_resp
);
1698 data_blob_free(&lm_resp
);
1699 reply_nterror(req
, nt_status_squash(
1700 NT_STATUS_LOGON_FAILURE
));
1701 END_PROFILE(SMBsesssetupX
);
1705 /* current_user_info is changed on new vuid */
1706 reload_services(sconn
->msg_ctx
, sconn
->sock
, True
);
1709 data_blob_free(&nt_resp
);
1710 data_blob_free(&lm_resp
);
1712 SSVAL(req
->outbuf
,smb_uid
,sess_vuid
);
1713 SSVAL(req
->inbuf
,smb_uid
,sess_vuid
);
1714 req
->vuid
= sess_vuid
;
1716 if (!sconn
->smb1
.sessions
.done_sesssetup
) {
1717 sconn
->smb1
.sessions
.max_send
=
1718 MIN(sconn
->smb1
.sessions
.max_send
,smb_bufsize
);
1720 sconn
->smb1
.sessions
.done_sesssetup
= true;
1722 END_PROFILE(SMBsesssetupX
);