2 Unix SMB/CIFS implementation.
4 Kerberos backend for GENSEC
6 Copyright (C) Andrew Bartlett <abartlet@samba.org> 2004
7 Copyright (C) Andrew Tridgell 2001
8 Copyright (C) Luke Howard 2002-2003
9 Copyright (C) Stefan Metzmacher 2004-2005
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 2 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.
22 You should have received a copy of the GNU General Public License
23 along with this program; if not, write to the Free Software
24 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
28 #include "system/kerberos.h"
29 #include "auth/kerberos/kerberos.h"
30 #include "librpc/gen_ndr/ndr_krb5pac.h"
31 #include "auth/auth.h"
32 #include "system/network.h"
33 #include "lib/socket/socket.h"
35 enum GENSEC_KRB5_STATE {
36 GENSEC_KRB5_SERVER_START,
37 GENSEC_KRB5_CLIENT_START,
38 GENSEC_KRB5_CLIENT_MUTUAL_AUTH,
42 struct gensec_krb5_state {
43 DATA_BLOB session_key;
45 enum GENSEC_KRB5_STATE state_position;
46 struct smb_krb5_context *smb_krb5_context;
47 krb5_auth_context auth_context;
49 krb5_keyblock *keyblock;
54 static int gensec_krb5_destroy(void *ptr)
56 struct gensec_krb5_state *gensec_krb5_state = ptr;
58 if (!gensec_krb5_state->smb_krb5_context) {
59 /* We can't clean anything else up unless we started up this far */
62 if (gensec_krb5_state->enc_ticket.length) {
63 kerberos_free_data_contents(gensec_krb5_state->smb_krb5_context->krb5_context,
64 &gensec_krb5_state->enc_ticket);
67 if (gensec_krb5_state->ticket) {
68 krb5_free_ticket(gensec_krb5_state->smb_krb5_context->krb5_context,
69 gensec_krb5_state->ticket);
72 /* ccache freed in a child destructor */
74 krb5_free_keyblock(gensec_krb5_state->smb_krb5_context->krb5_context,
75 gensec_krb5_state->keyblock);
77 if (gensec_krb5_state->auth_context) {
78 krb5_auth_con_free(gensec_krb5_state->smb_krb5_context->krb5_context,
79 gensec_krb5_state->auth_context);
85 static NTSTATUS gensec_krb5_start(struct gensec_security *gensec_security)
88 struct gensec_krb5_state *gensec_krb5_state;
89 struct cli_credentials *creds;
90 const struct socket_address *my_addr, *peer_addr;
91 krb5_address my_krb5_addr, peer_krb5_addr;
93 creds = gensec_get_credentials(gensec_security);
95 return NT_STATUS_INVALID_PARAMETER;
98 gensec_krb5_state = talloc(gensec_security, struct gensec_krb5_state);
99 if (!gensec_krb5_state) {
100 return NT_STATUS_NO_MEMORY;
103 gensec_security->private_data = gensec_krb5_state;
104 gensec_krb5_state->smb_krb5_context = NULL;
105 gensec_krb5_state->auth_context = NULL;
106 gensec_krb5_state->ticket = NULL;
107 ZERO_STRUCT(gensec_krb5_state->enc_ticket);
108 gensec_krb5_state->keyblock = NULL;
109 gensec_krb5_state->session_key = data_blob(NULL, 0);
110 gensec_krb5_state->pac = data_blob(NULL, 0);
111 gensec_krb5_state->gssapi = False;
113 talloc_set_destructor(gensec_krb5_state, gensec_krb5_destroy);
115 if (cli_credentials_get_krb5_context(creds, &gensec_krb5_state->smb_krb5_context)) {
116 talloc_free(gensec_krb5_state);
117 return NT_STATUS_INTERNAL_ERROR;
120 ret = krb5_auth_con_init(gensec_krb5_state->smb_krb5_context->krb5_context, &gensec_krb5_state->auth_context);
122 DEBUG(1,("gensec_krb5_start: krb5_auth_con_init failed (%s)\n",
123 smb_get_krb5_error_message(gensec_krb5_state->smb_krb5_context->krb5_context,
124 ret, gensec_krb5_state)));
125 talloc_free(gensec_krb5_state);
126 return NT_STATUS_INTERNAL_ERROR;
129 ret = krb5_auth_con_setflags(gensec_krb5_state->smb_krb5_context->krb5_context,
130 gensec_krb5_state->auth_context,
131 KRB5_AUTH_CONTEXT_DO_SEQUENCE);
133 DEBUG(1,("gensec_krb5_start: krb5_auth_con_setflags failed (%s)\n",
134 smb_get_krb5_error_message(gensec_krb5_state->smb_krb5_context->krb5_context,
135 ret, gensec_krb5_state)));
136 talloc_free(gensec_krb5_state);
137 return NT_STATUS_INTERNAL_ERROR;
140 my_addr = gensec_get_my_addr(gensec_security);
141 if (my_addr && my_addr->sockaddr) {
142 ret = krb5_sockaddr2address(gensec_krb5_state->smb_krb5_context->krb5_context,
143 my_addr->sockaddr, &my_krb5_addr);
145 DEBUG(1,("gensec_krb5_start: krb5_sockaddr2address (local) failed (%s)\n",
146 smb_get_krb5_error_message(gensec_krb5_state->smb_krb5_context->krb5_context,
147 ret, gensec_krb5_state)));
148 talloc_free(gensec_krb5_state);
149 return NT_STATUS_INTERNAL_ERROR;
153 peer_addr = gensec_get_my_addr(gensec_security);
154 if (peer_addr && peer_addr->sockaddr) {
155 ret = krb5_sockaddr2address(gensec_krb5_state->smb_krb5_context->krb5_context,
156 peer_addr->sockaddr, &peer_krb5_addr);
158 DEBUG(1,("gensec_krb5_start: krb5_sockaddr2address (local) failed (%s)\n",
159 smb_get_krb5_error_message(gensec_krb5_state->smb_krb5_context->krb5_context,
160 ret, gensec_krb5_state)));
161 talloc_free(gensec_krb5_state);
162 return NT_STATUS_INTERNAL_ERROR;
166 ret = krb5_auth_con_setaddrs(gensec_krb5_state->smb_krb5_context->krb5_context,
167 gensec_krb5_state->auth_context,
168 my_addr ? &my_krb5_addr : NULL,
169 peer_addr ? &peer_krb5_addr : NULL);
171 DEBUG(1,("gensec_krb5_start: krb5_auth_con_setaddrs failed (%s)\n",
172 smb_get_krb5_error_message(gensec_krb5_state->smb_krb5_context->krb5_context,
173 ret, gensec_krb5_state)));
174 talloc_free(gensec_krb5_state);
175 return NT_STATUS_INTERNAL_ERROR;
181 static NTSTATUS gensec_krb5_server_start(struct gensec_security *gensec_security)
184 struct gensec_krb5_state *gensec_krb5_state;
186 nt_status = gensec_krb5_start(gensec_security);
187 if (!NT_STATUS_IS_OK(nt_status)) {
191 gensec_krb5_state = gensec_security->private_data;
192 gensec_krb5_state->state_position = GENSEC_KRB5_SERVER_START;
197 static NTSTATUS gensec_fake_gssapi_krb5_server_start(struct gensec_security *gensec_security)
199 NTSTATUS nt_status = gensec_krb5_server_start(gensec_security);
201 if (NT_STATUS_IS_OK(nt_status)) {
202 struct gensec_krb5_state *gensec_krb5_state;
203 gensec_krb5_state = gensec_security->private_data;
204 gensec_krb5_state->gssapi = True;
209 static NTSTATUS gensec_krb5_client_start(struct gensec_security *gensec_security)
211 struct gensec_krb5_state *gensec_krb5_state;
214 struct ccache_container *ccache_container;
215 const char *hostname;
216 krb5_flags ap_req_options = AP_OPTS_USE_SUBKEY | AP_OPTS_MUTUAL_REQUIRED;
218 const char *principal;
221 hostname = gensec_get_target_hostname(gensec_security);
223 DEBUG(1, ("Could not determine hostname for target computer, cannot use kerberos\n"));
224 return NT_STATUS_INVALID_PARAMETER;
226 if (is_ipaddress(hostname)) {
227 DEBUG(2, ("Cannot do krb5 to an IP address"));
228 return NT_STATUS_INVALID_PARAMETER;
230 if (strequal(hostname, "localhost")) {
231 DEBUG(2, ("krb5 to 'localhost' does not make sense"));
232 return NT_STATUS_INVALID_PARAMETER;
235 nt_status = gensec_krb5_start(gensec_security);
236 if (!NT_STATUS_IS_OK(nt_status)) {
240 gensec_krb5_state = gensec_security->private_data;
241 gensec_krb5_state->state_position = GENSEC_KRB5_CLIENT_START;
243 ret = cli_credentials_get_ccache(gensec_get_credentials(gensec_security), &ccache_container);
245 DEBUG(1,("gensec_krb5_start: cli_credentials_get_ccache failed: %s\n",
246 error_message(ret)));
247 return NT_STATUS_UNSUCCESSFUL;
252 principal = gensec_get_target_principal(gensec_security);
253 if (principal && lp_client_use_spnego_principal()) {
254 krb5_principal target_principal;
255 ret = krb5_parse_name(gensec_krb5_state->smb_krb5_context->krb5_context, principal,
258 ret = krb5_mk_req_exact(gensec_krb5_state->smb_krb5_context->krb5_context,
259 &gensec_krb5_state->auth_context,
262 &in_data, ccache_container->ccache,
263 &gensec_krb5_state->enc_ticket);
264 krb5_free_principal(gensec_krb5_state->smb_krb5_context->krb5_context,
268 ret = krb5_mk_req(gensec_krb5_state->smb_krb5_context->krb5_context,
269 &gensec_krb5_state->auth_context,
271 gensec_get_target_service(gensec_security),
273 &in_data, ccache_container->ccache,
274 &gensec_krb5_state->enc_ticket);
279 case KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN:
280 DEBUG(3, ("Server [%s] is not registered with our KDC: %s\n",
281 hostname, smb_get_krb5_error_message(gensec_krb5_state->smb_krb5_context->krb5_context, ret, gensec_krb5_state)));
282 return NT_STATUS_INVALID_PARAMETER; /* Make SPNEGO ignore us, we can't go any further here */
283 case KRB5_KDC_UNREACH:
284 DEBUG(3, ("Cannot reach a KDC we require to contact host [%s]: %s\n",
285 hostname, smb_get_krb5_error_message(gensec_krb5_state->smb_krb5_context->krb5_context, ret, gensec_krb5_state)));
286 return NT_STATUS_INVALID_PARAMETER; /* Make SPNEGO ignore us, we can't go any further here */
287 case KRB5KDC_ERR_PREAUTH_FAILED:
288 case KRB5KRB_AP_ERR_TKT_EXPIRED:
290 /* Too much clock skew - we will need to kinit to re-skew the clock */
291 case KRB5KRB_AP_ERR_SKEW:
292 case KRB5_KDCREP_SKEW:
294 DEBUG(3, ("kerberos (mk_req) failed: %s\n",
295 smb_get_krb5_error_message(gensec_krb5_state->smb_krb5_context->krb5_context, ret, gensec_krb5_state)));
296 /* fall down to remaining code */
300 /* just don't print a message for these really ordinary messages */
301 case KRB5_FCC_NOFILE:
302 case KRB5_CC_NOTFOUND:
305 return NT_STATUS_UNSUCCESSFUL;
309 DEBUG(0, ("kerberos: %s\n",
310 smb_get_krb5_error_message(gensec_krb5_state->smb_krb5_context->krb5_context, ret, gensec_krb5_state)));
311 return NT_STATUS_UNSUCCESSFUL;
315 static NTSTATUS gensec_fake_gssapi_krb5_client_start(struct gensec_security *gensec_security)
317 NTSTATUS nt_status = gensec_krb5_client_start(gensec_security);
319 if (NT_STATUS_IS_OK(nt_status)) {
320 struct gensec_krb5_state *gensec_krb5_state;
321 gensec_krb5_state = gensec_security->private_data;
322 gensec_krb5_state->gssapi = True;
328 * Check if the packet is one for this mechansim
330 * @param gensec_security GENSEC state
331 * @param in The request, as a DATA_BLOB
332 * @return Error, INVALID_PARAMETER if it's not a packet for us
333 * or NT_STATUS_OK if the packet is ok.
336 static NTSTATUS gensec_fake_gssapi_krb5_magic(struct gensec_security *gensec_security,
339 if (gensec_gssapi_check_oid(in, GENSEC_OID_KERBEROS5)) {
342 return NT_STATUS_INVALID_PARAMETER;
348 * Next state function for the Krb5 GENSEC mechanism
350 * @param gensec_krb5_state KRB5 State
351 * @param out_mem_ctx The TALLOC_CTX for *out to be allocated on
352 * @param in The request, as a DATA_BLOB
353 * @param out The reply, as an talloc()ed DATA_BLOB, on *out_mem_ctx
354 * @return Error, MORE_PROCESSING_REQUIRED if a reply is sent,
355 * or NT_STATUS_OK if the user is authenticated.
358 static NTSTATUS gensec_krb5_update(struct gensec_security *gensec_security,
359 TALLOC_CTX *out_mem_ctx,
360 const DATA_BLOB in, DATA_BLOB *out)
362 struct gensec_krb5_state *gensec_krb5_state = gensec_security->private_data;
363 krb5_error_code ret = 0;
366 switch (gensec_krb5_state->state_position) {
367 case GENSEC_KRB5_CLIENT_START:
369 DATA_BLOB unwrapped_out;
371 if (gensec_krb5_state->gssapi) {
372 unwrapped_out = data_blob_talloc(out_mem_ctx, gensec_krb5_state->enc_ticket.data, gensec_krb5_state->enc_ticket.length);
374 /* wrap that up in a nice GSS-API wrapping */
375 *out = gensec_gssapi_gen_krb5_wrap(out_mem_ctx, &unwrapped_out, TOK_ID_KRB_AP_REQ);
377 *out = data_blob_talloc(out_mem_ctx, gensec_krb5_state->enc_ticket.data, gensec_krb5_state->enc_ticket.length);
379 gensec_krb5_state->state_position = GENSEC_KRB5_CLIENT_MUTUAL_AUTH;
380 nt_status = NT_STATUS_MORE_PROCESSING_REQUIRED;
384 case GENSEC_KRB5_CLIENT_MUTUAL_AUTH:
386 DATA_BLOB unwrapped_in;
388 krb5_ap_rep_enc_part *repl = NULL;
391 if (gensec_krb5_state->gssapi) {
392 if (!gensec_gssapi_parse_krb5_wrap(out_mem_ctx, &in, &unwrapped_in, tok_id)) {
393 DEBUG(1,("gensec_gssapi_parse_krb5_wrap(mutual authentication) failed to parse\n"));
394 dump_data_pw("Mutual authentication message:\n", in.data, in.length);
395 return NT_STATUS_INVALID_PARAMETER;
400 /* TODO: check the tok_id */
402 inbuf.data = unwrapped_in.data;
403 inbuf.length = unwrapped_in.length;
404 ret = krb5_rd_rep(gensec_krb5_state->smb_krb5_context->krb5_context,
405 gensec_krb5_state->auth_context,
408 DEBUG(1,("krb5_rd_rep (mutual authentication) failed (%s)\n",
409 smb_get_krb5_error_message(gensec_krb5_state->smb_krb5_context->krb5_context, ret, out_mem_ctx)));
410 dump_data_pw("Mutual authentication message:\n", inbuf.data, inbuf.length);
411 nt_status = NT_STATUS_ACCESS_DENIED;
413 *out = data_blob(NULL, 0);
414 nt_status = NT_STATUS_OK;
415 gensec_krb5_state->state_position = GENSEC_KRB5_DONE;
418 krb5_free_ap_rep_enc_part(gensec_krb5_state->smb_krb5_context->krb5_context, repl);
423 case GENSEC_KRB5_SERVER_START:
425 DATA_BLOB unwrapped_in;
426 DATA_BLOB unwrapped_out = data_blob(NULL, 0);
430 return NT_STATUS_INVALID_PARAMETER;
433 /* Parse the GSSAPI wrapping, if it's there... (win2k3 allows it to be omited) */
434 if (gensec_krb5_state->gssapi
435 && gensec_gssapi_parse_krb5_wrap(out_mem_ctx, &in, &unwrapped_in, tok_id)) {
436 nt_status = ads_verify_ticket(out_mem_ctx,
437 gensec_krb5_state->smb_krb5_context,
438 &gensec_krb5_state->auth_context,
439 gensec_get_credentials(gensec_security),
440 gensec_get_target_service(gensec_security), &unwrapped_in,
441 &gensec_krb5_state->ticket, &unwrapped_out,
442 &gensec_krb5_state->keyblock);
444 /* TODO: check the tok_id */
445 nt_status = ads_verify_ticket(out_mem_ctx,
446 gensec_krb5_state->smb_krb5_context,
447 &gensec_krb5_state->auth_context,
448 gensec_get_credentials(gensec_security),
449 gensec_get_target_service(gensec_security),
451 &gensec_krb5_state->ticket, &unwrapped_out,
452 &gensec_krb5_state->keyblock);
455 if (!NT_STATUS_IS_OK(nt_status)) {
459 if (NT_STATUS_IS_OK(nt_status)) {
460 gensec_krb5_state->state_position = GENSEC_KRB5_DONE;
461 /* wrap that up in a nice GSS-API wrapping */
462 if (gensec_krb5_state->gssapi) {
463 *out = gensec_gssapi_gen_krb5_wrap(out_mem_ctx, &unwrapped_out, TOK_ID_KRB_AP_REP);
465 *out = unwrapped_out;
471 case GENSEC_KRB5_DONE:
473 /* Asking too many times... */
474 return NT_STATUS_INVALID_PARAMETER;
478 static NTSTATUS gensec_krb5_session_key(struct gensec_security *gensec_security,
479 DATA_BLOB *session_key)
481 struct gensec_krb5_state *gensec_krb5_state = gensec_security->private_data;
482 krb5_context context = gensec_krb5_state->smb_krb5_context->krb5_context;
483 krb5_auth_context auth_context = gensec_krb5_state->auth_context;
485 krb5_error_code err = -1;
487 if (gensec_krb5_state->session_key.data) {
488 *session_key = gensec_krb5_state->session_key;
492 switch (gensec_security->gensec_role) {
494 err = krb5_auth_con_getlocalsubkey(context, auth_context, &skey);
497 err = krb5_auth_con_getremotesubkey(context, auth_context, &skey);
500 if (err == 0 && skey != NULL) {
501 DEBUG(10, ("Got KRB5 session key of length %d\n",
502 (int)KRB5_KEY_LENGTH(skey)));
503 gensec_krb5_state->session_key = data_blob_talloc(gensec_krb5_state,
504 KRB5_KEY_DATA(skey), KRB5_KEY_LENGTH(skey));
505 *session_key = gensec_krb5_state->session_key;
506 dump_data_pw("KRB5 Session Key:\n", session_key->data, session_key->length);
508 krb5_free_keyblock(context, skey);
511 DEBUG(10, ("KRB5 error getting session key %d\n", err));
512 return NT_STATUS_NO_USER_SESSION_KEY;
516 static NTSTATUS gensec_krb5_session_info(struct gensec_security *gensec_security,
517 struct auth_session_info **_session_info)
519 NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
520 struct gensec_krb5_state *gensec_krb5_state = gensec_security->private_data;
521 krb5_context context = gensec_krb5_state->smb_krb5_context->krb5_context;
522 struct auth_serversupplied_info *server_info = NULL;
523 struct auth_session_info *session_info = NULL;
524 struct PAC_LOGON_INFO *logon_info;
526 krb5_principal client_principal;
533 TALLOC_CTX *mem_ctx = talloc_new(gensec_security);
535 return NT_STATUS_NO_MEMORY;
538 ret = krb5_ticket_get_authorization_data_type(context, gensec_krb5_state->ticket,
539 KRB5_AUTHDATA_WIN2K_PAC,
543 DEBUG(5, ("krb5_ticket_get_authorization_data_type failed to find PAC: %s\n",
544 smb_get_krb5_error_message(context,
547 pac = data_blob_talloc(mem_ctx, pac_data.data, pac_data.length);
549 talloc_free(mem_ctx);
550 return NT_STATUS_NO_MEMORY;
553 ret = krb5_ticket_get_client(context, gensec_krb5_state->ticket, &client_principal);
555 DEBUG(5, ("krb5_ticket_get_client failed to get cleint principal: %s\n",
556 smb_get_krb5_error_message(context,
558 talloc_free(mem_ctx);
559 return NT_STATUS_NO_MEMORY;
562 /* decode and verify the pac */
563 nt_status = kerberos_pac_logon_info(gensec_krb5_state, &logon_info, pac,
564 gensec_krb5_state->smb_krb5_context->krb5_context,
565 NULL, gensec_krb5_state->keyblock,
567 gensec_krb5_state->ticket->ticket.authtime, NULL);
568 krb5_free_principal(context, client_principal);
570 if (NT_STATUS_IS_OK(nt_status)) {
571 union netr_Validation validation;
572 validation.sam3 = &logon_info->info3;
573 nt_status = make_server_info_netlogon_validation(mem_ctx,
582 /* IF we have the PAC - otherwise we need to get this
583 * data from elsewere - local ldb, or (TODO) lookup of some
586 if (!NT_STATUS_IS_OK(nt_status)) {
587 /* NO pac, or can't parse or verify it */
588 char *principal_string;
589 ret = krb5_ticket_get_client(context, gensec_krb5_state->ticket, &client_principal);
591 DEBUG(5, ("krb5_ticket_get_client failed to get cleint principal: %s\n",
592 smb_get_krb5_error_message(context,
594 talloc_free(mem_ctx);
595 return NT_STATUS_NO_MEMORY;
598 ret = krb5_unparse_name(gensec_krb5_state->smb_krb5_context->krb5_context,
599 client_principal, &principal_string);
600 krb5_free_principal(context, client_principal);
602 talloc_free(mem_ctx);
603 return NT_STATUS_NO_MEMORY;
606 nt_status = sam_get_server_info_principal(mem_ctx, principal_string,
608 free(principal_string);
610 if (!NT_STATUS_IS_OK(nt_status)) {
611 talloc_free(mem_ctx);
616 /* references the server_info into the session_info */
617 nt_status = auth_generate_session_info(mem_ctx, server_info, &session_info);
619 if (!NT_STATUS_IS_OK(nt_status)) {
620 talloc_free(mem_ctx);
624 nt_status = gensec_krb5_session_key(gensec_security, &session_info->session_key);
626 if (!NT_STATUS_IS_OK(nt_status)) {
627 talloc_free(mem_ctx);
631 *_session_info = session_info;
633 talloc_steal(gensec_krb5_state, session_info);
634 talloc_free(mem_ctx);
638 static NTSTATUS gensec_krb5_wrap(struct gensec_security *gensec_security,
643 struct gensec_krb5_state *gensec_krb5_state = gensec_security->private_data;
644 krb5_context context = gensec_krb5_state->smb_krb5_context->krb5_context;
645 krb5_auth_context auth_context = gensec_krb5_state->auth_context;
647 krb5_data input, output;
648 input.length = in->length;
649 input.data = in->data;
651 if (gensec_have_feature(gensec_security, GENSEC_FEATURE_SEAL)) {
652 ret = krb5_mk_priv(context, auth_context, &input, &output, NULL);
654 DEBUG(1, ("krb5_mk_priv failed: %s\n",
655 smb_get_krb5_error_message(gensec_krb5_state->smb_krb5_context->krb5_context,
657 return NT_STATUS_ACCESS_DENIED;
659 *out = data_blob_talloc(mem_ctx, output.data, output.length);
661 krb5_data_free(&output);
663 return NT_STATUS_ACCESS_DENIED;
668 static NTSTATUS gensec_krb5_unwrap(struct gensec_security *gensec_security,
673 struct gensec_krb5_state *gensec_krb5_state = gensec_security->private_data;
674 krb5_context context = gensec_krb5_state->smb_krb5_context->krb5_context;
675 krb5_auth_context auth_context = gensec_krb5_state->auth_context;
677 krb5_data input, output;
678 krb5_replay_data replay;
679 input.length = in->length;
680 input.data = in->data;
682 if (gensec_have_feature(gensec_security, GENSEC_FEATURE_SEAL)) {
683 ret = krb5_rd_priv(context, auth_context, &input, &output, &replay);
685 DEBUG(1, ("krb5_rd_priv failed: %s\n",
686 smb_get_krb5_error_message(gensec_krb5_state->smb_krb5_context->krb5_context,
688 return NT_STATUS_ACCESS_DENIED;
690 *out = data_blob_talloc(mem_ctx, output.data, output.length);
692 krb5_data_free(&output);
694 return NT_STATUS_ACCESS_DENIED;
699 static BOOL gensec_krb5_have_feature(struct gensec_security *gensec_security,
702 struct gensec_krb5_state *gensec_krb5_state = gensec_security->private_data;
703 if (feature & GENSEC_FEATURE_SESSION_KEY) {
706 if (!gensec_krb5_state->gssapi &&
707 (feature & GENSEC_FEATURE_SEAL)) {
714 static const char *gensec_krb5_oids[] = {
715 GENSEC_OID_KERBEROS5,
716 GENSEC_OID_KERBEROS5_OLD,
720 static const struct gensec_security_ops gensec_fake_gssapi_krb5_security_ops = {
721 .name = "fake_gssapi_krb5",
722 .sasl_name = "GSSAPI",
723 .auth_type = DCERPC_AUTH_TYPE_KRB5,
724 .oid = gensec_krb5_oids,
725 .client_start = gensec_fake_gssapi_krb5_client_start,
726 .server_start = gensec_fake_gssapi_krb5_server_start,
727 .update = gensec_krb5_update,
728 .magic = gensec_fake_gssapi_krb5_magic,
729 .session_key = gensec_krb5_session_key,
730 .session_info = gensec_krb5_session_info,
731 .have_feature = gensec_krb5_have_feature,
736 static const struct gensec_security_ops gensec_krb5_security_ops = {
738 .client_start = gensec_krb5_client_start,
739 .server_start = gensec_krb5_server_start,
740 .update = gensec_krb5_update,
741 .session_key = gensec_krb5_session_key,
742 .session_info = gensec_krb5_session_info,
743 .have_feature = gensec_krb5_have_feature,
744 .wrap = gensec_krb5_wrap,
745 .unwrap = gensec_krb5_unwrap,
750 NTSTATUS gensec_krb5_init(void)
754 ret = gensec_register(&gensec_krb5_security_ops);
755 if (!NT_STATUS_IS_OK(ret)) {
756 DEBUG(0,("Failed to register '%s' gensec backend!\n",
757 gensec_krb5_security_ops.name));
761 ret = gensec_register(&gensec_fake_gssapi_krb5_security_ops);
762 if (!NT_STATUS_IS_OK(ret)) {
763 DEBUG(0,("Failed to register '%s' gensec backend!\n",
764 gensec_krb5_security_ops.name));