2 Unix SMB/CIFS implementation.
4 RFC2478 Compliant SPNEGO implementation
6 Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2003
7 Copyright (C) Andrew Bartlett <abartlet@samba.org> 2004-2005
8 Copyright (C) Stefan Metzmacher <metze@samba.org> 2004-2008
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 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/>.
27 #include "lib/util/tevent_ntstatus.h"
28 #include "../libcli/auth/spnego.h"
29 #include "librpc/gen_ndr/ndr_dcerpc.h"
30 #include "auth/credentials/credentials.h"
31 #include "auth/gensec/gensec.h"
32 #include "auth/gensec/gensec_internal.h"
33 #include "param/param.h"
34 #include "lib/util/asn1.h"
35 #include "lib/util/base64.h"
39 _PUBLIC_ NTSTATUS gensec_spnego_init(TALLOC_CTX *ctx);
41 enum spnego_state_position {
51 enum spnego_message_type expected_packet;
52 enum spnego_state_position state_position;
53 struct gensec_security *sub_sec_security;
64 bool may_skip_mic_check;
70 * The following is used to implement
71 * the update token fragmentation
75 size_t out_max_length;
80 static void gensec_spnego_update_sub_abort(struct spnego_state *spnego_state)
82 spnego_state->sub_sec_ready = false;
83 TALLOC_FREE(spnego_state->sub_sec_security);
86 static NTSTATUS gensec_spnego_client_start(struct gensec_security *gensec_security)
88 struct spnego_state *spnego_state;
90 spnego_state = talloc_zero(gensec_security, struct spnego_state);
92 return NT_STATUS_NO_MEMORY;
95 spnego_state->expected_packet = SPNEGO_NEG_TOKEN_INIT;
96 spnego_state->state_position = SPNEGO_CLIENT_START;
97 spnego_state->sub_sec_security = NULL;
98 spnego_state->sub_sec_ready = false;
99 spnego_state->mech_types = data_blob_null;
100 spnego_state->out_max_length = gensec_max_update_size(gensec_security);
101 spnego_state->out_status = NT_STATUS_MORE_PROCESSING_REQUIRED;
103 spnego_state->simulate_w2k = gensec_setting_bool(gensec_security->settings,
104 "spnego", "simulate_w2k", false);
106 gensec_security->private_data = spnego_state;
110 static NTSTATUS gensec_spnego_server_start(struct gensec_security *gensec_security)
112 struct spnego_state *spnego_state;
114 spnego_state = talloc_zero(gensec_security, struct spnego_state);
116 return NT_STATUS_NO_MEMORY;
119 spnego_state->expected_packet = SPNEGO_NEG_TOKEN_INIT;
120 spnego_state->state_position = SPNEGO_SERVER_START;
121 spnego_state->sub_sec_security = NULL;
122 spnego_state->sub_sec_ready = false;
123 spnego_state->mech_types = data_blob_null;
124 spnego_state->out_max_length = gensec_max_update_size(gensec_security);
125 spnego_state->out_status = NT_STATUS_MORE_PROCESSING_REQUIRED;
127 spnego_state->simulate_w2k = gensec_setting_bool(gensec_security->settings,
128 "spnego", "simulate_w2k", false);
130 gensec_security->private_data = spnego_state;
134 /** Fallback to another GENSEC mechanism, based on magic strings
136 * This is the 'fallback' case, where we don't get SPNEGO, and have to
137 * try all the other options (and hope they all have a magic string
141 static NTSTATUS gensec_spnego_server_try_fallback(struct gensec_security *gensec_security,
142 struct spnego_state *spnego_state,
147 const struct gensec_security_ops **all_ops;
149 all_ops = gensec_security_mechs(gensec_security, mem_ctx);
151 for (i=0; all_ops && all_ops[i]; i++) {
155 if (gensec_security != NULL &&
156 !gensec_security_ops_enabled(all_ops[i], gensec_security))
161 if (!all_ops[i]->oid) {
166 for (j=0; all_ops[i]->oid[j]; j++) {
167 if (strcasecmp(GENSEC_OID_SPNEGO,all_ops[i]->oid[j]) == 0) {
175 if (!all_ops[i]->magic) {
179 nt_status = all_ops[i]->magic(gensec_security, &in);
180 if (!NT_STATUS_IS_OK(nt_status)) {
184 spnego_state->state_position = SPNEGO_FALLBACK;
186 nt_status = gensec_subcontext_start(spnego_state,
188 &spnego_state->sub_sec_security);
190 if (!NT_STATUS_IS_OK(nt_status)) {
193 /* select the sub context */
194 nt_status = gensec_start_mech_by_ops(spnego_state->sub_sec_security,
196 if (!NT_STATUS_IS_OK(nt_status)) {
202 DEBUG(1, ("Failed to parse SPNEGO request\n"));
203 return NT_STATUS_INVALID_PARAMETER;
207 Parse the netTokenInit, either from the client, to the server, or
208 from the server to the client.
211 static NTSTATUS gensec_spnego_parse_negTokenInit(struct gensec_security *gensec_security,
212 struct spnego_state *spnego_state,
213 TALLOC_CTX *out_mem_ctx,
214 struct tevent_context *ev,
215 struct spnego_data *spnego_in,
216 DATA_BLOB *unwrapped_out)
219 NTSTATUS nt_status = NT_STATUS_INVALID_PARAMETER;
220 const char * const *mechType = NULL;
221 DATA_BLOB unwrapped_in = data_blob_null;
223 const struct gensec_security_ops_wrapper *all_sec = NULL;
225 if (spnego_in->type != SPNEGO_NEG_TOKEN_INIT) {
226 return NT_STATUS_INTERNAL_ERROR;
229 mechType = spnego_in->negTokenInit.mechTypes;
230 unwrapped_in = spnego_in->negTokenInit.mechToken;
232 all_sec = gensec_security_by_oid_list(gensec_security,
237 ok = spnego_write_mech_types(spnego_state,
239 &spnego_state->mech_types);
241 DEBUG(1, ("SPNEGO: Failed to write mechTypes\n"));
242 return NT_STATUS_NO_MEMORY;
245 if (spnego_state->state_position == SPNEGO_SERVER_START) {
247 for (j=0; mechType && mechType[j]; j++) {
248 for (i=0; all_sec && all_sec[i].op; i++) {
249 if (strcmp(mechType[j], all_sec[i].oid) != 0) {
253 nt_status = gensec_subcontext_start(spnego_state,
255 &spnego_state->sub_sec_security);
256 if (!NT_STATUS_IS_OK(nt_status)) {
259 /* select the sub context */
260 nt_status = gensec_start_mech_by_ops(spnego_state->sub_sec_security,
262 if (!NT_STATUS_IS_OK(nt_status)) {
264 * Pretend we never started it
266 gensec_spnego_update_sub_abort(spnego_state);
271 /* no optimistic token */
272 spnego_state->neg_oid = all_sec[i].oid;
273 *unwrapped_out = data_blob_null;
274 nt_status = NT_STATUS_MORE_PROCESSING_REQUIRED;
276 * Indicate the downgrade and request a
279 spnego_state->downgraded = true;
280 spnego_state->mic_requested = true;
284 nt_status = gensec_update_ev(spnego_state->sub_sec_security,
289 if (NT_STATUS_IS_OK(nt_status)) {
290 spnego_state->sub_sec_ready = true;
292 if (NT_STATUS_EQUAL(nt_status, NT_STATUS_INVALID_PARAMETER) ||
293 NT_STATUS_EQUAL(nt_status, NT_STATUS_CANT_ACCESS_DOMAIN_INFO)) {
295 DEBUG(1, ("SPNEGO(%s) NEG_TOKEN_INIT failed to parse contents: %s\n",
296 spnego_state->sub_sec_security->ops->name, nt_errstr(nt_status)));
299 * Pretend we never started it
301 gensec_spnego_update_sub_abort(spnego_state);
305 spnego_state->neg_oid = all_sec[i].oid;
308 if (spnego_state->sub_sec_security) {
313 if (!spnego_state->sub_sec_security) {
314 DEBUG(1, ("SPNEGO: Could not find a suitable mechtype in NEG_TOKEN_INIT\n"));
315 return NT_STATUS_INVALID_PARAMETER;
319 /* Having tried any optimistic token from the client (if we
320 * were the server), if we didn't get anywhere, walk our list
321 * in our preference order */
322 unwrapped_in = data_blob_null;
324 if (!spnego_state->sub_sec_security) {
325 for (i=0; all_sec && all_sec[i].op; i++) {
326 nt_status = gensec_subcontext_start(spnego_state,
328 &spnego_state->sub_sec_security);
329 if (!NT_STATUS_IS_OK(nt_status)) {
332 /* select the sub context */
333 nt_status = gensec_start_mech_by_ops(spnego_state->sub_sec_security,
335 if (!NT_STATUS_IS_OK(nt_status)) {
337 * Pretend we never started it.
339 gensec_spnego_update_sub_abort(spnego_state);
343 spnego_state->neg_oid = all_sec[i].oid;
345 /* only get the helping start blob for the first OID */
346 nt_status = gensec_update_ev(spnego_state->sub_sec_security,
351 if (NT_STATUS_IS_OK(nt_status)) {
352 spnego_state->sub_sec_ready = true;
355 /* it is likely that a NULL input token will
356 * not be liked by most server mechs, but if
357 * we are in the client, we want the first
358 * update packet to be able to abort the use
360 if (spnego_state->state_position != SPNEGO_SERVER_START) {
361 if (NT_STATUS_EQUAL(nt_status, NT_STATUS_INVALID_PARAMETER) ||
362 NT_STATUS_EQUAL(nt_status, NT_STATUS_NO_LOGON_SERVERS) ||
363 NT_STATUS_EQUAL(nt_status, NT_STATUS_TIME_DIFFERENCE_AT_DC) ||
364 NT_STATUS_EQUAL(nt_status, NT_STATUS_CANT_ACCESS_DOMAIN_INFO)) {
365 const char *next = NULL;
366 const char *principal = NULL;
367 int dbg_level = DBGLVL_WARNING;
369 if (all_sec[i+1].op != NULL) {
370 next = all_sec[i+1].op->name;
371 dbg_level = DBGLVL_NOTICE;
374 if (gensec_security->target.principal != NULL) {
375 principal = gensec_security->target.principal;
376 } else if (gensec_security->target.service != NULL &&
377 gensec_security->target.hostname != NULL)
379 principal = talloc_asprintf(spnego_state->sub_sec_security,
381 gensec_security->target.service,
382 gensec_security->target.hostname);
384 principal = gensec_security->target.hostname;
387 DEBUG(dbg_level, ("SPNEGO(%s) creating NEG_TOKEN_INIT for %s failed (next[%s]): %s\n",
388 spnego_state->sub_sec_security->ops->name,
390 next, nt_errstr(nt_status)));
393 * Pretend we never started it.
395 gensec_spnego_update_sub_abort(spnego_state);
404 if (spnego_state->sub_sec_security) {
405 /* it is likely that a NULL input token will
406 * not be liked by most server mechs, but this
407 * does the right thing in the CIFS client.
408 * just push us along the merry-go-round
409 * again, and hope for better luck next
412 if (NT_STATUS_EQUAL(nt_status, NT_STATUS_INVALID_PARAMETER)) {
413 *unwrapped_out = data_blob_null;
414 nt_status = NT_STATUS_MORE_PROCESSING_REQUIRED;
417 if (!NT_STATUS_EQUAL(nt_status, NT_STATUS_INVALID_PARAMETER)
418 && !NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)
419 && !NT_STATUS_IS_OK(nt_status)) {
420 DEBUG(1, ("SPNEGO(%s) NEG_TOKEN_INIT failed: %s\n",
421 spnego_state->sub_sec_security->ops->name, nt_errstr(nt_status)));
423 /* We started the mech correctly, and the
424 * input from the other side was valid.
425 * Return the error (say bad password, invalid
427 gensec_spnego_update_sub_abort(spnego_state);
431 return nt_status; /* OK, INVALID_PARAMETER ore MORE PROCESSING */
434 DEBUG(1, ("SPNEGO: Could not find a suitable mechtype in NEG_TOKEN_INIT\n"));
435 /* we could re-negotiate here, but it would only work
436 * if the client or server lied about what it could
437 * support the first time. Lets keep this code to
443 /** create a negTokenInit
445 * This is the same packet, no matter if the client or server sends it first, but it is always the first packet
447 static NTSTATUS gensec_spnego_create_negTokenInit(struct gensec_security *gensec_security,
448 struct spnego_state *spnego_state,
449 TALLOC_CTX *out_mem_ctx,
450 struct tevent_context *ev,
454 NTSTATUS nt_status = NT_STATUS_INVALID_PARAMETER;
455 const char **mechTypes = NULL;
456 DATA_BLOB unwrapped_out = data_blob_null;
457 const struct gensec_security_ops_wrapper *all_sec;
459 mechTypes = gensec_security_oids(gensec_security,
460 out_mem_ctx, GENSEC_OID_SPNEGO);
462 all_sec = gensec_security_by_oid_list(gensec_security,
466 for (i=0; all_sec && all_sec[i].op; i++) {
467 struct spnego_data spnego_out;
468 const char **send_mech_types;
471 nt_status = gensec_subcontext_start(spnego_state,
473 &spnego_state->sub_sec_security);
474 if (!NT_STATUS_IS_OK(nt_status)) {
477 /* select the sub context */
478 nt_status = gensec_start_mech_by_ops(spnego_state->sub_sec_security,
480 if (!NT_STATUS_IS_OK(nt_status)) {
481 gensec_spnego_update_sub_abort(spnego_state);
485 /* In the client, try and produce the first (optimistic) packet */
486 if (spnego_state->state_position == SPNEGO_CLIENT_START) {
487 nt_status = gensec_update_ev(spnego_state->sub_sec_security,
492 if (NT_STATUS_IS_OK(nt_status)) {
493 spnego_state->sub_sec_ready = true;
496 if (!NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)
497 && !NT_STATUS_IS_OK(nt_status)) {
498 const char *next = NULL;
499 const char *principal = NULL;
500 int dbg_level = DBGLVL_WARNING;
502 if (all_sec[i+1].op != NULL) {
503 next = all_sec[i+1].op->name;
504 dbg_level = DBGLVL_NOTICE;
507 if (gensec_security->target.principal != NULL) {
508 principal = gensec_security->target.principal;
509 } else if (gensec_security->target.service != NULL &&
510 gensec_security->target.hostname != NULL)
512 principal = talloc_asprintf(spnego_state->sub_sec_security,
514 gensec_security->target.service,
515 gensec_security->target.hostname);
517 principal = gensec_security->target.hostname;
520 DEBUG(dbg_level, ("SPNEGO(%s) creating NEG_TOKEN_INIT for %s failed (next[%s]): %s\n",
521 spnego_state->sub_sec_security->ops->name,
523 next, nt_errstr(nt_status)));
526 * Pretend we never started it
528 gensec_spnego_update_sub_abort(spnego_state);
533 spnego_out.type = SPNEGO_NEG_TOKEN_INIT;
535 send_mech_types = gensec_security_oids_from_ops_wrapped(out_mem_ctx,
538 ok = spnego_write_mech_types(spnego_state,
540 &spnego_state->mech_types);
542 DEBUG(1, ("SPNEGO: Failed to write mechTypes\n"));
543 return NT_STATUS_NO_MEMORY;
546 /* List the remaining mechs as options */
547 spnego_out.negTokenInit.mechTypes = send_mech_types;
548 spnego_out.negTokenInit.reqFlags = data_blob_null;
549 spnego_out.negTokenInit.reqFlagsPadding = 0;
551 if (spnego_state->state_position == SPNEGO_SERVER_START) {
552 spnego_out.negTokenInit.mechListMIC
553 = data_blob_string_const(ADS_IGNORE_PRINCIPAL);
555 spnego_out.negTokenInit.mechListMIC = data_blob_null;
558 spnego_out.negTokenInit.mechToken = unwrapped_out;
560 if (spnego_write_data(out_mem_ctx, out, &spnego_out) == -1) {
561 DEBUG(1, ("Failed to write NEG_TOKEN_INIT\n"));
562 return NT_STATUS_INVALID_PARAMETER;
566 spnego_state->neg_oid = all_sec[i].oid;
568 if (spnego_state->state_position == SPNEGO_SERVER_START) {
569 spnego_state->state_position = SPNEGO_SERVER_START;
570 spnego_state->expected_packet = SPNEGO_NEG_TOKEN_INIT;
572 spnego_state->state_position = SPNEGO_CLIENT_TARG;
573 spnego_state->expected_packet = SPNEGO_NEG_TOKEN_TARG;
576 return NT_STATUS_MORE_PROCESSING_REQUIRED;
578 gensec_spnego_update_sub_abort(spnego_state);
580 DEBUG(10, ("Failed to setup SPNEGO negTokenInit request: %s\n", nt_errstr(nt_status)));
585 /** create a server negTokenTarg
587 * This is the case, where the client is the first one who sends data
590 static NTSTATUS gensec_spnego_server_response(struct spnego_state *spnego_state,
591 TALLOC_CTX *out_mem_ctx,
593 const DATA_BLOB unwrapped_out,
594 DATA_BLOB mech_list_mic,
597 struct spnego_data spnego_out;
600 spnego_out.type = SPNEGO_NEG_TOKEN_TARG;
601 spnego_out.negTokenTarg.responseToken = unwrapped_out;
602 spnego_out.negTokenTarg.mechListMIC = mech_list_mic;
603 spnego_out.negTokenTarg.supportedMech = NULL;
605 if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
606 spnego_out.negTokenTarg.supportedMech = spnego_state->neg_oid;
607 if (spnego_state->mic_requested) {
608 spnego_out.negTokenTarg.negResult = SPNEGO_REQUEST_MIC;
609 spnego_state->mic_requested = false;
611 spnego_out.negTokenTarg.negResult = SPNEGO_ACCEPT_INCOMPLETE;
613 spnego_state->state_position = SPNEGO_SERVER_TARG;
614 } else if (NT_STATUS_IS_OK(nt_status)) {
615 if (unwrapped_out.data) {
616 spnego_out.negTokenTarg.supportedMech = spnego_state->neg_oid;
618 spnego_out.negTokenTarg.negResult = SPNEGO_ACCEPT_COMPLETED;
619 spnego_state->state_position = SPNEGO_DONE;
621 spnego_out.negTokenTarg.negResult = SPNEGO_REJECT;
622 spnego_out.negTokenTarg.mechListMIC = data_blob_null;
623 DEBUG(2, ("SPNEGO login failed: %s\n", nt_errstr(nt_status)));
624 spnego_state->state_position = SPNEGO_DONE;
627 if (spnego_write_data(out_mem_ctx, out, &spnego_out) == -1) {
628 DEBUG(1, ("Failed to write SPNEGO reply to NEG_TOKEN_TARG\n"));
629 return NT_STATUS_INVALID_PARAMETER;
632 spnego_state->expected_packet = SPNEGO_NEG_TOKEN_TARG;
633 spnego_state->num_targs++;
638 static NTSTATUS gensec_spnego_update_client(struct gensec_security *gensec_security,
639 TALLOC_CTX *out_mem_ctx,
640 struct tevent_context *ev,
641 const DATA_BLOB in, DATA_BLOB *out)
643 struct spnego_state *spnego_state = (struct spnego_state *)gensec_security->private_data;
644 DATA_BLOB mech_list_mic = data_blob_null;
645 DATA_BLOB unwrapped_out = data_blob_null;
646 struct spnego_data spnego_out;
647 struct spnego_data spnego;
650 *out = data_blob_null;
652 /* and switch into the state machine */
654 switch (spnego_state->state_position) {
655 case SPNEGO_CLIENT_START:
657 /* The server offers a list of mechanisms */
659 const char *my_mechs[] = {NULL, NULL};
660 NTSTATUS nt_status = NT_STATUS_INVALID_PARAMETER;
662 const char *tp = NULL;
665 /* client to produce negTokenInit */
666 return gensec_spnego_create_negTokenInit(gensec_security,
672 len = spnego_read_data(gensec_security, in, &spnego);
675 DEBUG(1, ("Invalid SPNEGO request:\n"));
676 dump_data(1, in.data, in.length);
677 return NT_STATUS_INVALID_PARAMETER;
680 /* OK, so it's real SPNEGO, check the packet's the one we expect */
681 if (spnego.type != spnego_state->expected_packet) {
682 DEBUG(1, ("Invalid SPNEGO request: %d, expected %d\n", spnego.type,
683 spnego_state->expected_packet));
684 dump_data(1, in.data, in.length);
685 spnego_free_data(&spnego);
686 return NT_STATUS_INVALID_PARAMETER;
689 tp = spnego.negTokenInit.targetPrincipal;
690 if (tp != NULL && strcmp(tp, ADS_IGNORE_PRINCIPAL) != 0) {
691 DEBUG(5, ("Server claims it's principal name is %s\n", tp));
692 if (lpcfg_client_use_spnego_principal(gensec_security->settings->lp_ctx)) {
693 gensec_set_target_principal(gensec_security, tp);
697 nt_status = gensec_spnego_parse_negTokenInit(gensec_security,
704 if (!NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED) && !NT_STATUS_IS_OK(nt_status)) {
705 spnego_free_data(&spnego);
709 my_mechs[0] = spnego_state->neg_oid;
711 spnego_out.type = SPNEGO_NEG_TOKEN_INIT;
712 spnego_out.negTokenInit.mechTypes = my_mechs;
713 spnego_out.negTokenInit.reqFlags = data_blob_null;
714 spnego_out.negTokenInit.reqFlagsPadding = 0;
715 spnego_out.negTokenInit.mechListMIC = data_blob_null;
716 spnego_out.negTokenInit.mechToken = unwrapped_out;
718 if (spnego_write_data(out_mem_ctx, out, &spnego_out) == -1) {
719 DEBUG(1, ("Failed to write SPNEGO reply to NEG_TOKEN_INIT\n"));
720 return NT_STATUS_INVALID_PARAMETER;
723 ok = spnego_write_mech_types(spnego_state,
725 &spnego_state->mech_types);
727 DEBUG(1, ("SPNEGO: Failed to write mechTypes\n"));
728 return NT_STATUS_NO_MEMORY;
732 spnego_state->expected_packet = SPNEGO_NEG_TOKEN_TARG;
733 spnego_state->state_position = SPNEGO_CLIENT_TARG;
735 spnego_free_data(&spnego);
736 return NT_STATUS_MORE_PROCESSING_REQUIRED;
739 case SPNEGO_CLIENT_TARG:
741 NTSTATUS nt_status = NT_STATUS_INTERNAL_ERROR;
742 const struct spnego_negTokenTarg *ta = NULL;
745 return NT_STATUS_INVALID_PARAMETER;
748 len = spnego_read_data(gensec_security, in, &spnego);
751 DEBUG(1, ("Invalid SPNEGO request:\n"));
752 dump_data(1, in.data, in.length);
753 return NT_STATUS_INVALID_PARAMETER;
756 /* OK, so it's real SPNEGO, check the packet's the one we expect */
757 if (spnego.type != spnego_state->expected_packet) {
758 DEBUG(1, ("Invalid SPNEGO request: %d, expected %d\n", spnego.type,
759 spnego_state->expected_packet));
760 dump_data(1, in.data, in.length);
761 spnego_free_data(&spnego);
762 return NT_STATUS_INVALID_PARAMETER;
764 ta = &spnego.negTokenTarg;
766 spnego_state->num_targs++;
768 if (ta->negResult == SPNEGO_REJECT) {
769 return NT_STATUS_LOGON_FAILURE;
772 if (spnego.negTokenTarg.negResult == SPNEGO_REQUEST_MIC) {
773 spnego_state->mic_requested = true;
776 /* Server didn't like our choice of mech, and chose something else */
777 if (((ta->negResult == SPNEGO_ACCEPT_INCOMPLETE) ||
778 (ta->negResult == SPNEGO_REQUEST_MIC)) &&
779 ta->supportedMech != NULL&&
780 strcmp(ta->supportedMech, spnego_state->neg_oid) != 0) {
781 DEBUG(3,("GENSEC SPNEGO: client preferred mech (%s) not accepted, server wants: %s\n",
782 gensec_get_name_by_oid(gensec_security, spnego_state->neg_oid),
783 gensec_get_name_by_oid(gensec_security, ta->supportedMech)));
784 spnego_state->downgraded = true;
785 gensec_spnego_update_sub_abort(spnego_state);
786 nt_status = gensec_subcontext_start(spnego_state,
788 &spnego_state->sub_sec_security);
789 if (!NT_STATUS_IS_OK(nt_status)) {
790 spnego_free_data(&spnego);
793 /* select the sub context */
794 nt_status = gensec_start_mech_by_oid(spnego_state->sub_sec_security,
796 if (!NT_STATUS_IS_OK(nt_status)) {
797 spnego_free_data(&spnego);
801 spnego_state->neg_oid = talloc_strdup(spnego_state,
803 if (spnego_state->neg_oid == NULL) {
804 spnego_free_data(&spnego);
805 return NT_STATUS_NO_MEMORY;
809 if (spnego.negTokenTarg.mechListMIC.length > 0) {
810 DATA_BLOB *m = &spnego.negTokenTarg.mechListMIC;
811 const DATA_BLOB *r = &spnego.negTokenTarg.responseToken;
814 * Windows 2000 has a bug, it repeats the
815 * responseToken in the mechListMIC field.
817 if (m->length == r->length) {
820 cmp = memcmp(m->data, r->data, m->length);
827 if (spnego.negTokenTarg.mechListMIC.length > 0) {
828 if (spnego_state->sub_sec_ready) {
829 spnego_state->needs_mic_check = true;
833 if (spnego_state->needs_mic_check) {
834 if (spnego.negTokenTarg.responseToken.length != 0) {
835 DEBUG(1, ("SPNEGO: Did not setup a mech in NEG_TOKEN_INIT\n"));
836 spnego_free_data(&spnego);
837 return NT_STATUS_INVALID_PARAMETER;
840 if (spnego.negTokenTarg.mechListMIC.length == 0
841 && spnego_state->may_skip_mic_check) {
843 * In this case we don't require
844 * a mechListMIC from the server.
846 * This works around bugs in the Azure
847 * and Apple spnego implementations.
850 * https://bugzilla.samba.org/show_bug.cgi?id=11994
852 spnego_state->needs_mic_check = false;
853 nt_status = NT_STATUS_OK;
854 goto client_response;
857 nt_status = gensec_check_packet(spnego_state->sub_sec_security,
858 spnego_state->mech_types.data,
859 spnego_state->mech_types.length,
860 spnego_state->mech_types.data,
861 spnego_state->mech_types.length,
862 &spnego.negTokenTarg.mechListMIC);
863 if (!NT_STATUS_IS_OK(nt_status)) {
864 DEBUG(2,("GENSEC SPNEGO: failed to verify mechListMIC: %s\n",
865 nt_errstr(nt_status)));
866 spnego_free_data(&spnego);
869 spnego_state->needs_mic_check = false;
870 spnego_state->done_mic_check = true;
871 goto client_response;
874 if (!spnego_state->sub_sec_ready) {
875 nt_status = gensec_update_ev(spnego_state->sub_sec_security,
877 spnego.negTokenTarg.responseToken,
879 if (NT_STATUS_IS_OK(nt_status)) {
880 spnego_state->sub_sec_ready = true;
882 if (!NT_STATUS_IS_OK(nt_status)) {
883 goto client_response;
886 nt_status = NT_STATUS_OK;
889 if (!spnego_state->done_mic_check) {
890 bool have_sign = true;
891 bool new_spnego = false;
893 have_sign = gensec_have_feature(spnego_state->sub_sec_security,
894 GENSEC_FEATURE_SIGN);
895 if (spnego_state->simulate_w2k) {
898 new_spnego = gensec_have_feature(spnego_state->sub_sec_security,
899 GENSEC_FEATURE_NEW_SPNEGO);
901 switch (spnego.negTokenTarg.negResult) {
902 case SPNEGO_ACCEPT_COMPLETED:
903 case SPNEGO_NONE_RESULT:
904 if (spnego_state->num_targs == 1) {
906 * the first exchange doesn't require
914 case SPNEGO_ACCEPT_INCOMPLETE:
915 if (spnego.negTokenTarg.mechListMIC.length > 0) {
920 if (spnego_state->downgraded) {
922 * A downgrade should be protected if
929 * The caller may just asked for
930 * GENSEC_FEATURE_SESSION_KEY, this
931 * is only reflected in the want_features.
934 * gensec_have_features(GENSEC_FEATURE_SIGN)
937 if (gensec_security->want_features & GENSEC_FEATURE_SIGN) {
940 if (gensec_security->want_features & GENSEC_FEATURE_SEAL) {
944 * Here we're sure our preferred mech was
945 * selected by the server and our caller doesn't
946 * need GENSEC_FEATURE_SIGN nor
947 * GENSEC_FEATURE_SEAL support.
949 * In this case we don't require
950 * a mechListMIC from the server.
952 * This works around bugs in the Azure
953 * and Apple spnego implementations.
956 * https://bugzilla.samba.org/show_bug.cgi?id=11994
958 spnego_state->may_skip_mic_check = true;
961 case SPNEGO_REQUEST_MIC:
962 if (spnego.negTokenTarg.mechListMIC.length > 0) {
970 if (spnego_state->mic_requested) {
976 if (have_sign && new_spnego) {
977 spnego_state->needs_mic_check = true;
978 spnego_state->needs_mic_sign = true;
982 if (spnego.negTokenTarg.mechListMIC.length > 0) {
983 nt_status = gensec_check_packet(spnego_state->sub_sec_security,
984 spnego_state->mech_types.data,
985 spnego_state->mech_types.length,
986 spnego_state->mech_types.data,
987 spnego_state->mech_types.length,
988 &spnego.negTokenTarg.mechListMIC);
989 if (!NT_STATUS_IS_OK(nt_status)) {
990 DEBUG(2,("GENSEC SPNEGO: failed to verify mechListMIC: %s\n",
991 nt_errstr(nt_status)));
992 spnego_free_data(&spnego);
995 spnego_state->needs_mic_check = false;
996 spnego_state->done_mic_check = true;
999 if (spnego_state->needs_mic_sign) {
1000 nt_status = gensec_sign_packet(spnego_state->sub_sec_security,
1002 spnego_state->mech_types.data,
1003 spnego_state->mech_types.length,
1004 spnego_state->mech_types.data,
1005 spnego_state->mech_types.length,
1007 if (!NT_STATUS_IS_OK(nt_status)) {
1008 DEBUG(2,("GENSEC SPNEGO: failed to sign mechListMIC: %s\n",
1009 nt_errstr(nt_status)));
1010 spnego_free_data(&spnego);
1013 spnego_state->needs_mic_sign = false;
1016 if (spnego_state->needs_mic_check) {
1017 nt_status = NT_STATUS_MORE_PROCESSING_REQUIRED;
1021 spnego_free_data(&spnego);
1023 if (!NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)
1024 && !NT_STATUS_IS_OK(nt_status)) {
1025 DEBUG(1, ("SPNEGO(%s) login failed: %s\n",
1026 spnego_state->sub_sec_security->ops->name,
1027 nt_errstr(nt_status)));
1031 if (unwrapped_out.length || mech_list_mic.length) {
1033 spnego_out.type = SPNEGO_NEG_TOKEN_TARG;
1034 spnego_out.negTokenTarg.negResult = SPNEGO_NONE_RESULT;
1035 spnego_out.negTokenTarg.supportedMech = NULL;
1036 spnego_out.negTokenTarg.responseToken = unwrapped_out;
1037 spnego_out.negTokenTarg.mechListMIC = mech_list_mic;
1039 if (spnego_write_data(out_mem_ctx, out, &spnego_out) == -1) {
1040 DEBUG(1, ("Failed to write SPNEGO reply to NEG_TOKEN_TARG\n"));
1041 return NT_STATUS_INVALID_PARAMETER;
1044 spnego_state->num_targs++;
1045 spnego_state->state_position = SPNEGO_CLIENT_TARG;
1046 nt_status = NT_STATUS_MORE_PROCESSING_REQUIRED;
1049 /* all done - server has accepted, and we agree */
1050 *out = data_blob_null;
1052 if (ta->negResult != SPNEGO_ACCEPT_COMPLETED) {
1053 /* unless of course it did not accept */
1054 DEBUG(1,("gensec_update ok but not accepted\n"));
1055 nt_status = NT_STATUS_INVALID_PARAMETER;
1058 spnego_state->state_position = SPNEGO_DONE;
1068 smb_panic(__location__);
1069 return NT_STATUS_INTERNAL_ERROR;
1072 static NTSTATUS gensec_spnego_update_server(struct gensec_security *gensec_security,
1073 TALLOC_CTX *out_mem_ctx,
1074 struct tevent_context *ev,
1075 const DATA_BLOB in, DATA_BLOB *out)
1077 struct spnego_state *spnego_state = (struct spnego_state *)gensec_security->private_data;
1078 DATA_BLOB mech_list_mic = data_blob_null;
1079 DATA_BLOB unwrapped_out = data_blob_null;
1080 struct spnego_data spnego;
1083 /* and switch into the state machine */
1085 switch (spnego_state->state_position) {
1086 case SPNEGO_SERVER_START:
1090 if (in.length == 0) {
1091 return gensec_spnego_create_negTokenInit(gensec_security,
1097 len = spnego_read_data(gensec_security, in, &spnego);
1100 * This is the 'fallback' case, where we don't get
1101 * SPNEGO, and have to try all the other options (and
1102 * hope they all have a magic string they check)
1104 nt_status = gensec_spnego_server_try_fallback(gensec_security,
1108 if (!NT_STATUS_IS_OK(nt_status)) {
1112 return gensec_update_ev(spnego_state->sub_sec_security,
1116 /* client sent NegTargetInit, we send NegTokenTarg */
1118 /* OK, so it's real SPNEGO, check the packet's the one we expect */
1119 if (spnego.type != spnego_state->expected_packet) {
1120 DEBUG(1, ("Invalid SPNEGO request: %d, expected %d\n", spnego.type,
1121 spnego_state->expected_packet));
1122 dump_data(1, in.data, in.length);
1123 spnego_free_data(&spnego);
1124 return NT_STATUS_INVALID_PARAMETER;
1127 nt_status = gensec_spnego_parse_negTokenInit(gensec_security,
1134 if (spnego_state->simulate_w2k) {
1136 * Windows 2000 returns the unwrapped token
1137 * also in the mech_list_mic field.
1139 * In order to verify our client code,
1140 * we need a way to have a server with this
1143 mech_list_mic = unwrapped_out;
1146 nt_status = gensec_spnego_server_response(spnego_state,
1153 spnego_free_data(&spnego);
1158 case SPNEGO_SERVER_TARG:
1161 bool have_sign = true;
1162 bool new_spnego = false;
1165 return NT_STATUS_INVALID_PARAMETER;
1168 len = spnego_read_data(gensec_security, in, &spnego);
1171 DEBUG(1, ("Invalid SPNEGO request:\n"));
1172 dump_data(1, in.data, in.length);
1173 return NT_STATUS_INVALID_PARAMETER;
1176 /* OK, so it's real SPNEGO, check the packet's the one we expect */
1177 if (spnego.type != spnego_state->expected_packet) {
1178 DEBUG(1, ("Invalid SPNEGO request: %d, expected %d\n", spnego.type,
1179 spnego_state->expected_packet));
1180 dump_data(1, in.data, in.length);
1181 spnego_free_data(&spnego);
1182 return NT_STATUS_INVALID_PARAMETER;
1185 spnego_state->num_targs++;
1187 if (!spnego_state->sub_sec_security) {
1188 DEBUG(1, ("SPNEGO: Did not setup a mech in NEG_TOKEN_INIT\n"));
1189 spnego_free_data(&spnego);
1190 return NT_STATUS_INVALID_PARAMETER;
1193 if (spnego_state->needs_mic_check) {
1194 if (spnego.negTokenTarg.responseToken.length != 0) {
1195 DEBUG(1, ("SPNEGO: Did not setup a mech in NEG_TOKEN_INIT\n"));
1196 spnego_free_data(&spnego);
1197 return NT_STATUS_INVALID_PARAMETER;
1200 nt_status = gensec_check_packet(spnego_state->sub_sec_security,
1201 spnego_state->mech_types.data,
1202 spnego_state->mech_types.length,
1203 spnego_state->mech_types.data,
1204 spnego_state->mech_types.length,
1205 &spnego.negTokenTarg.mechListMIC);
1206 if (NT_STATUS_IS_OK(nt_status)) {
1207 spnego_state->needs_mic_check = false;
1208 spnego_state->done_mic_check = true;
1210 DEBUG(2,("GENSEC SPNEGO: failed to verify mechListMIC: %s\n",
1211 nt_errstr(nt_status)));
1213 goto server_response;
1216 nt_status = gensec_update_ev(spnego_state->sub_sec_security,
1218 spnego.negTokenTarg.responseToken,
1220 if (NT_STATUS_IS_OK(nt_status)) {
1221 spnego_state->sub_sec_ready = true;
1223 if (!NT_STATUS_IS_OK(nt_status)) {
1224 goto server_response;
1227 have_sign = gensec_have_feature(spnego_state->sub_sec_security,
1228 GENSEC_FEATURE_SIGN);
1229 if (spnego_state->simulate_w2k) {
1232 new_spnego = gensec_have_feature(spnego_state->sub_sec_security,
1233 GENSEC_FEATURE_NEW_SPNEGO);
1234 if (spnego.negTokenTarg.mechListMIC.length > 0) {
1238 if (have_sign && new_spnego) {
1239 spnego_state->needs_mic_check = true;
1240 spnego_state->needs_mic_sign = true;
1243 if (have_sign && spnego.negTokenTarg.mechListMIC.length > 0) {
1244 nt_status = gensec_check_packet(spnego_state->sub_sec_security,
1245 spnego_state->mech_types.data,
1246 spnego_state->mech_types.length,
1247 spnego_state->mech_types.data,
1248 spnego_state->mech_types.length,
1249 &spnego.negTokenTarg.mechListMIC);
1250 if (!NT_STATUS_IS_OK(nt_status)) {
1251 DEBUG(2,("GENSEC SPNEGO: failed to verify mechListMIC: %s\n",
1252 nt_errstr(nt_status)));
1253 goto server_response;
1256 spnego_state->needs_mic_check = false;
1257 spnego_state->done_mic_check = true;
1260 if (spnego_state->needs_mic_sign) {
1261 nt_status = gensec_sign_packet(spnego_state->sub_sec_security,
1263 spnego_state->mech_types.data,
1264 spnego_state->mech_types.length,
1265 spnego_state->mech_types.data,
1266 spnego_state->mech_types.length,
1268 if (!NT_STATUS_IS_OK(nt_status)) {
1269 DEBUG(2,("GENSEC SPNEGO: failed to sign mechListMIC: %s\n",
1270 nt_errstr(nt_status)));
1271 goto server_response;
1273 spnego_state->needs_mic_sign = false;
1276 if (spnego_state->needs_mic_check) {
1277 nt_status = NT_STATUS_MORE_PROCESSING_REQUIRED;
1281 nt_status = gensec_spnego_server_response(spnego_state,
1288 spnego_free_data(&spnego);
1297 smb_panic(__location__);
1298 return NT_STATUS_INTERNAL_ERROR;
1301 struct gensec_spnego_update_state {
1302 struct gensec_security *gensec;
1303 struct spnego_state *spnego;
1309 static void gensec_spnego_update_cleanup(struct tevent_req *req,
1310 enum tevent_req_state req_state)
1312 struct gensec_spnego_update_state *state =
1313 tevent_req_data(req,
1314 struct gensec_spnego_update_state);
1316 switch (req_state) {
1317 case TEVENT_REQ_USER_ERROR:
1318 case TEVENT_REQ_TIMED_OUT:
1319 case TEVENT_REQ_NO_MEMORY:
1321 * A fatal error, further updates are not allowed.
1323 state->spnego->state_position = SPNEGO_DONE;
1330 static NTSTATUS gensec_spnego_update_in(struct gensec_security *gensec_security,
1331 const DATA_BLOB in, TALLOC_CTX *mem_ctx,
1332 DATA_BLOB *full_in);
1333 static NTSTATUS gensec_spnego_update_out(struct gensec_security *gensec_security,
1334 TALLOC_CTX *out_mem_ctx,
1337 static struct tevent_req *gensec_spnego_update_send(TALLOC_CTX *mem_ctx,
1338 struct tevent_context *ev,
1339 struct gensec_security *gensec_security,
1342 struct spnego_state *spnego_state =
1343 talloc_get_type_abort(gensec_security->private_data,
1344 struct spnego_state);
1345 struct tevent_req *req = NULL;
1346 struct gensec_spnego_update_state *state = NULL;
1349 req = tevent_req_create(mem_ctx, &state,
1350 struct gensec_spnego_update_state);
1354 state->gensec = gensec_security;
1355 state->spnego = spnego_state;
1356 tevent_req_set_cleanup_fn(req, gensec_spnego_update_cleanup);
1358 if (spnego_state->out_frag.length > 0) {
1359 if (in.length > 0) {
1360 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
1361 return tevent_req_post(req, ev);
1364 status = gensec_spnego_update_out(gensec_security,
1365 state, &state->out);
1366 state->status = status;
1367 if (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1368 tevent_req_done(req);
1369 return tevent_req_post(req, ev);
1371 if (tevent_req_nterror(req, status)) {
1372 return tevent_req_post(req, ev);
1375 tevent_req_done(req);
1376 return tevent_req_post(req, ev);
1379 status = gensec_spnego_update_in(gensec_security, in,
1380 state, &state->full_in);
1381 state->status = status;
1382 if (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1383 tevent_req_done(req);
1384 return tevent_req_post(req, ev);
1386 if (tevent_req_nterror(req, status)) {
1387 return tevent_req_post(req, ev);
1390 /* and switch into the state machine */
1392 switch (spnego_state->state_position) {
1393 case SPNEGO_FALLBACK:
1394 status = gensec_update_ev(spnego_state->sub_sec_security,
1397 &spnego_state->out_frag);
1400 case SPNEGO_CLIENT_START:
1401 case SPNEGO_CLIENT_TARG:
1402 status = gensec_spnego_update_client(gensec_security,
1405 &spnego_state->out_frag);
1408 case SPNEGO_SERVER_START:
1409 case SPNEGO_SERVER_TARG:
1410 status = gensec_spnego_update_server(gensec_security,
1413 &spnego_state->out_frag);
1417 smb_panic(__location__);
1421 if (NT_STATUS_IS_OK(status)) {
1422 bool reset_full = true;
1424 reset_full = !spnego_state->done_mic_check;
1426 status = gensec_may_reset_crypto(spnego_state->sub_sec_security,
1429 if (!NT_STATUS_IS_OK(status) &&
1430 !NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1431 tevent_req_nterror(req, status);
1432 return tevent_req_post(req, ev);
1435 spnego_state->out_status = status;
1437 status = gensec_spnego_update_out(gensec_security,
1438 state, &state->out);
1439 state->status = status;
1440 if (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1441 tevent_req_done(req);
1442 return tevent_req_post(req, ev);
1444 if (tevent_req_nterror(req, status)) {
1445 return tevent_req_post(req, ev);
1448 tevent_req_done(req);
1449 return tevent_req_post(req, ev);
1452 static NTSTATUS gensec_spnego_update_in(struct gensec_security *gensec_security,
1453 const DATA_BLOB in, TALLOC_CTX *mem_ctx,
1456 struct spnego_state *spnego_state = (struct spnego_state *)gensec_security->private_data;
1460 *full_in = data_blob_null;
1462 switch (spnego_state->state_position) {
1463 case SPNEGO_FALLBACK:
1465 spnego_state->in_needed = 0;
1466 return NT_STATUS_OK;
1468 case SPNEGO_CLIENT_START:
1469 case SPNEGO_CLIENT_TARG:
1470 case SPNEGO_SERVER_START:
1471 case SPNEGO_SERVER_TARG:
1476 return NT_STATUS_INVALID_PARAMETER;
1479 if (spnego_state->in_needed == 0) {
1484 * try to work out the size of the full
1485 * input token, it might be fragmented
1487 ret = asn1_peek_full_tag(in, ASN1_APPLICATION(0), &size);
1488 if ((ret != 0) && (ret != EAGAIN)) {
1489 ret = asn1_peek_full_tag(in, ASN1_CONTEXT(1), &size);
1492 if ((ret == 0) || (ret == EAGAIN)) {
1493 spnego_state->in_needed = size;
1496 * If it is not an asn1 message
1497 * just call the next layer.
1499 spnego_state->in_needed = in.length;
1503 if (spnego_state->in_needed > UINT16_MAX) {
1505 * limit the incoming message to 0xFFFF
1506 * to avoid DoS attacks.
1508 return NT_STATUS_INVALID_BUFFER_SIZE;
1511 if ((spnego_state->in_needed > 0) && (in.length == 0)) {
1513 * If we reach this, we know we got at least
1514 * part of an asn1 message, getting 0 means
1515 * the remote peer wants us to spin.
1517 return NT_STATUS_INVALID_PARAMETER;
1520 expected = spnego_state->in_needed - spnego_state->in_frag.length;
1521 if (in.length > expected) {
1523 * we got more than expected
1525 return NT_STATUS_INVALID_PARAMETER;
1528 if (in.length == spnego_state->in_needed) {
1530 * if the in.length contains the full blob
1533 * Note: this implies spnego_state->in_frag.length == 0,
1534 * but we do not need to check this explicitly
1535 * because we already know that we did not get
1536 * more than expected.
1539 spnego_state->in_needed = 0;
1540 return NT_STATUS_OK;
1543 ok = data_blob_append(spnego_state, &spnego_state->in_frag,
1544 in.data, in.length);
1546 return NT_STATUS_NO_MEMORY;
1549 if (spnego_state->in_needed > spnego_state->in_frag.length) {
1550 return NT_STATUS_MORE_PROCESSING_REQUIRED;
1553 *full_in = spnego_state->in_frag;
1554 talloc_steal(mem_ctx, full_in->data);
1555 spnego_state->in_frag = data_blob_null;
1556 spnego_state->in_needed = 0;
1557 return NT_STATUS_OK;
1560 static NTSTATUS gensec_spnego_update_out(struct gensec_security *gensec_security,
1561 TALLOC_CTX *out_mem_ctx,
1564 struct spnego_state *spnego_state = (struct spnego_state *)gensec_security->private_data;
1565 DATA_BLOB out = data_blob_null;
1568 *_out = data_blob_null;
1570 if (spnego_state->out_frag.length <= spnego_state->out_max_length) {
1572 * Fast path, we can deliver everything
1575 *_out = spnego_state->out_frag;
1576 if (spnego_state->out_frag.length > 0) {
1577 talloc_steal(out_mem_ctx, _out->data);
1578 spnego_state->out_frag = data_blob_null;
1581 if (!NT_STATUS_IS_OK(spnego_state->out_status)) {
1582 return spnego_state->out_status;
1586 * We're completely done, further updates are not allowed.
1588 spnego_state->state_position = SPNEGO_DONE;
1589 return gensec_child_ready(gensec_security,
1590 spnego_state->sub_sec_security);
1593 out = spnego_state->out_frag;
1596 * copy the remaining bytes
1598 spnego_state->out_frag = data_blob_talloc(spnego_state,
1599 out.data + spnego_state->out_max_length,
1600 out.length - spnego_state->out_max_length);
1601 if (spnego_state->out_frag.data == NULL) {
1602 return NT_STATUS_NO_MEMORY;
1606 * truncate the buffer
1608 ok = data_blob_realloc(spnego_state, &out,
1609 spnego_state->out_max_length);
1611 return NT_STATUS_NO_MEMORY;
1614 talloc_steal(out_mem_ctx, out.data);
1616 return NT_STATUS_MORE_PROCESSING_REQUIRED;
1619 static NTSTATUS gensec_spnego_update_recv(struct tevent_req *req,
1620 TALLOC_CTX *out_mem_ctx,
1623 struct gensec_spnego_update_state *state =
1624 tevent_req_data(req,
1625 struct gensec_spnego_update_state);
1628 *out = data_blob_null;
1630 if (tevent_req_is_nterror(req, &status)) {
1631 tevent_req_received(req);
1636 talloc_steal(out_mem_ctx, state->out.data);
1637 status = state->status;
1638 tevent_req_received(req);
1642 static const char *gensec_spnego_oids[] = {
1647 static const struct gensec_security_ops gensec_spnego_security_ops = {
1649 .sasl_name = "GSS-SPNEGO",
1650 .auth_type = DCERPC_AUTH_TYPE_SPNEGO,
1651 .oid = gensec_spnego_oids,
1652 .client_start = gensec_spnego_client_start,
1653 .server_start = gensec_spnego_server_start,
1654 .update_send = gensec_spnego_update_send,
1655 .update_recv = gensec_spnego_update_recv,
1656 .seal_packet = gensec_child_seal_packet,
1657 .sign_packet = gensec_child_sign_packet,
1658 .sig_size = gensec_child_sig_size,
1659 .max_wrapped_size = gensec_child_max_wrapped_size,
1660 .max_input_size = gensec_child_max_input_size,
1661 .check_packet = gensec_child_check_packet,
1662 .unseal_packet = gensec_child_unseal_packet,
1663 .wrap = gensec_child_wrap,
1664 .unwrap = gensec_child_unwrap,
1665 .session_key = gensec_child_session_key,
1666 .session_info = gensec_child_session_info,
1667 .want_feature = gensec_child_want_feature,
1668 .have_feature = gensec_child_have_feature,
1669 .expire_time = gensec_child_expire_time,
1670 .final_auth_type = gensec_child_final_auth_type,
1672 .priority = GENSEC_SPNEGO
1675 _PUBLIC_ NTSTATUS gensec_spnego_init(TALLOC_CTX *ctx)
1678 ret = gensec_register(ctx, &gensec_spnego_security_ops);
1679 if (!NT_STATUS_IS_OK(ret)) {
1680 DEBUG(0,("Failed to register '%s' gensec backend!\n",
1681 gensec_spnego_security_ops.name));