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 "auth/auth_sam.h"
33 #include "system/network.h"
34 #include "lib/socket/socket.h"
36 enum GENSEC_KRB5_STATE {
37 GENSEC_KRB5_SERVER_START,
38 GENSEC_KRB5_CLIENT_START,
39 GENSEC_KRB5_CLIENT_MUTUAL_AUTH,
43 struct gensec_krb5_state {
44 DATA_BLOB session_key;
46 enum GENSEC_KRB5_STATE state_position;
47 struct smb_krb5_context *smb_krb5_context;
48 krb5_auth_context auth_context;
50 krb5_keyblock *keyblock;
55 static int gensec_krb5_destroy(void *ptr)
57 struct gensec_krb5_state *gensec_krb5_state = ptr;
59 if (!gensec_krb5_state->smb_krb5_context) {
60 /* We can't clean anything else up unless we started up this far */
63 if (gensec_krb5_state->enc_ticket.length) {
64 kerberos_free_data_contents(gensec_krb5_state->smb_krb5_context->krb5_context,
65 &gensec_krb5_state->enc_ticket);
68 if (gensec_krb5_state->ticket) {
69 krb5_free_ticket(gensec_krb5_state->smb_krb5_context->krb5_context,
70 gensec_krb5_state->ticket);
73 /* ccache freed in a child destructor */
75 krb5_free_keyblock(gensec_krb5_state->smb_krb5_context->krb5_context,
76 gensec_krb5_state->keyblock);
78 if (gensec_krb5_state->auth_context) {
79 krb5_auth_con_free(gensec_krb5_state->smb_krb5_context->krb5_context,
80 gensec_krb5_state->auth_context);
86 static NTSTATUS gensec_krb5_start(struct gensec_security *gensec_security)
89 struct gensec_krb5_state *gensec_krb5_state;
90 struct cli_credentials *creds;
91 const struct socket_address *my_addr, *peer_addr;
92 krb5_address my_krb5_addr, peer_krb5_addr;
94 creds = gensec_get_credentials(gensec_security);
96 return NT_STATUS_INVALID_PARAMETER;
99 gensec_krb5_state = talloc(gensec_security, struct gensec_krb5_state);
100 if (!gensec_krb5_state) {
101 return NT_STATUS_NO_MEMORY;
104 gensec_security->private_data = gensec_krb5_state;
105 gensec_krb5_state->smb_krb5_context = NULL;
106 gensec_krb5_state->auth_context = NULL;
107 gensec_krb5_state->ticket = NULL;
108 ZERO_STRUCT(gensec_krb5_state->enc_ticket);
109 gensec_krb5_state->keyblock = NULL;
110 gensec_krb5_state->session_key = data_blob(NULL, 0);
111 gensec_krb5_state->pac = data_blob(NULL, 0);
112 gensec_krb5_state->gssapi = False;
114 talloc_set_destructor(gensec_krb5_state, gensec_krb5_destroy);
116 if (cli_credentials_get_krb5_context(creds, &gensec_krb5_state->smb_krb5_context)) {
117 talloc_free(gensec_krb5_state);
118 return NT_STATUS_INTERNAL_ERROR;
121 ret = krb5_auth_con_init(gensec_krb5_state->smb_krb5_context->krb5_context, &gensec_krb5_state->auth_context);
123 DEBUG(1,("gensec_krb5_start: krb5_auth_con_init failed (%s)\n",
124 smb_get_krb5_error_message(gensec_krb5_state->smb_krb5_context->krb5_context,
125 ret, gensec_krb5_state)));
126 talloc_free(gensec_krb5_state);
127 return NT_STATUS_INTERNAL_ERROR;
130 ret = krb5_auth_con_setflags(gensec_krb5_state->smb_krb5_context->krb5_context,
131 gensec_krb5_state->auth_context,
132 KRB5_AUTH_CONTEXT_DO_SEQUENCE);
134 DEBUG(1,("gensec_krb5_start: krb5_auth_con_setflags failed (%s)\n",
135 smb_get_krb5_error_message(gensec_krb5_state->smb_krb5_context->krb5_context,
136 ret, gensec_krb5_state)));
137 talloc_free(gensec_krb5_state);
138 return NT_STATUS_INTERNAL_ERROR;
141 my_addr = gensec_get_my_addr(gensec_security);
142 if (my_addr && my_addr->sockaddr) {
143 ret = krb5_sockaddr2address(gensec_krb5_state->smb_krb5_context->krb5_context,
144 my_addr->sockaddr, &my_krb5_addr);
146 DEBUG(1,("gensec_krb5_start: krb5_sockaddr2address (local) failed (%s)\n",
147 smb_get_krb5_error_message(gensec_krb5_state->smb_krb5_context->krb5_context,
148 ret, gensec_krb5_state)));
149 talloc_free(gensec_krb5_state);
150 return NT_STATUS_INTERNAL_ERROR;
154 peer_addr = gensec_get_my_addr(gensec_security);
155 if (peer_addr && peer_addr->sockaddr) {
156 ret = krb5_sockaddr2address(gensec_krb5_state->smb_krb5_context->krb5_context,
157 peer_addr->sockaddr, &peer_krb5_addr);
159 DEBUG(1,("gensec_krb5_start: krb5_sockaddr2address (local) failed (%s)\n",
160 smb_get_krb5_error_message(gensec_krb5_state->smb_krb5_context->krb5_context,
161 ret, gensec_krb5_state)));
162 talloc_free(gensec_krb5_state);
163 return NT_STATUS_INTERNAL_ERROR;
167 ret = krb5_auth_con_setaddrs(gensec_krb5_state->smb_krb5_context->krb5_context,
168 gensec_krb5_state->auth_context,
169 my_addr ? &my_krb5_addr : NULL,
170 peer_addr ? &peer_krb5_addr : NULL);
172 DEBUG(1,("gensec_krb5_start: krb5_auth_con_setaddrs failed (%s)\n",
173 smb_get_krb5_error_message(gensec_krb5_state->smb_krb5_context->krb5_context,
174 ret, gensec_krb5_state)));
175 talloc_free(gensec_krb5_state);
176 return NT_STATUS_INTERNAL_ERROR;
182 static NTSTATUS gensec_krb5_server_start(struct gensec_security *gensec_security)
185 struct gensec_krb5_state *gensec_krb5_state;
187 nt_status = gensec_krb5_start(gensec_security);
188 if (!NT_STATUS_IS_OK(nt_status)) {
192 gensec_krb5_state = gensec_security->private_data;
193 gensec_krb5_state->state_position = GENSEC_KRB5_SERVER_START;
198 static NTSTATUS gensec_fake_gssapi_krb5_server_start(struct gensec_security *gensec_security)
200 NTSTATUS nt_status = gensec_krb5_server_start(gensec_security);
202 if (NT_STATUS_IS_OK(nt_status)) {
203 struct gensec_krb5_state *gensec_krb5_state;
204 gensec_krb5_state = gensec_security->private_data;
205 gensec_krb5_state->gssapi = True;
210 static NTSTATUS gensec_krb5_client_start(struct gensec_security *gensec_security)
212 struct gensec_krb5_state *gensec_krb5_state;
215 struct ccache_container *ccache_container;
216 const char *hostname;
217 krb5_flags ap_req_options = AP_OPTS_USE_SUBKEY | AP_OPTS_MUTUAL_REQUIRED;
219 const char *principal;
222 hostname = gensec_get_target_hostname(gensec_security);
224 DEBUG(1, ("Could not determine hostname for target computer, cannot use kerberos\n"));
225 return NT_STATUS_INVALID_PARAMETER;
227 if (is_ipaddress(hostname)) {
228 DEBUG(2, ("Cannot do krb5 to an IP address"));
229 return NT_STATUS_INVALID_PARAMETER;
231 if (strequal(hostname, "localhost")) {
232 DEBUG(2, ("krb5 to 'localhost' does not make sense"));
233 return NT_STATUS_INVALID_PARAMETER;
236 nt_status = gensec_krb5_start(gensec_security);
237 if (!NT_STATUS_IS_OK(nt_status)) {
241 gensec_krb5_state = gensec_security->private_data;
242 gensec_krb5_state->state_position = GENSEC_KRB5_CLIENT_START;
244 ret = cli_credentials_get_ccache(gensec_get_credentials(gensec_security), &ccache_container);
246 DEBUG(1,("gensec_krb5_start: cli_credentials_get_ccache failed: %s\n",
247 error_message(ret)));
248 return NT_STATUS_UNSUCCESSFUL;
253 principal = gensec_get_target_principal(gensec_security);
254 if (principal && lp_client_use_spnego_principal()) {
255 krb5_principal target_principal;
256 ret = krb5_parse_name(gensec_krb5_state->smb_krb5_context->krb5_context, principal,
259 ret = krb5_mk_req_exact(gensec_krb5_state->smb_krb5_context->krb5_context,
260 &gensec_krb5_state->auth_context,
263 &in_data, ccache_container->ccache,
264 &gensec_krb5_state->enc_ticket);
265 krb5_free_principal(gensec_krb5_state->smb_krb5_context->krb5_context,
269 ret = krb5_mk_req(gensec_krb5_state->smb_krb5_context->krb5_context,
270 &gensec_krb5_state->auth_context,
272 gensec_get_target_service(gensec_security),
274 &in_data, ccache_container->ccache,
275 &gensec_krb5_state->enc_ticket);
280 case KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN:
281 DEBUG(3, ("Server [%s] is not registered with our KDC: %s\n",
282 hostname, smb_get_krb5_error_message(gensec_krb5_state->smb_krb5_context->krb5_context, ret, gensec_krb5_state)));
283 return NT_STATUS_INVALID_PARAMETER; /* Make SPNEGO ignore us, we can't go any further here */
284 case KRB5_KDC_UNREACH:
285 DEBUG(3, ("Cannot reach a KDC we require to contact host [%s]: %s\n",
286 hostname, smb_get_krb5_error_message(gensec_krb5_state->smb_krb5_context->krb5_context, ret, gensec_krb5_state)));
287 return NT_STATUS_INVALID_PARAMETER; /* Make SPNEGO ignore us, we can't go any further here */
288 case KRB5KDC_ERR_PREAUTH_FAILED:
289 case KRB5KRB_AP_ERR_TKT_EXPIRED:
291 /* Too much clock skew - we will need to kinit to re-skew the clock */
292 case KRB5KRB_AP_ERR_SKEW:
293 case KRB5_KDCREP_SKEW:
295 DEBUG(3, ("kerberos (mk_req) failed: %s\n",
296 smb_get_krb5_error_message(gensec_krb5_state->smb_krb5_context->krb5_context, ret, gensec_krb5_state)));
297 /* fall down to remaining code */
301 /* just don't print a message for these really ordinary messages */
302 case KRB5_FCC_NOFILE:
303 case KRB5_CC_NOTFOUND:
306 return NT_STATUS_UNSUCCESSFUL;
310 DEBUG(0, ("kerberos: %s\n",
311 smb_get_krb5_error_message(gensec_krb5_state->smb_krb5_context->krb5_context, ret, gensec_krb5_state)));
312 return NT_STATUS_UNSUCCESSFUL;
316 static NTSTATUS gensec_fake_gssapi_krb5_client_start(struct gensec_security *gensec_security)
318 NTSTATUS nt_status = gensec_krb5_client_start(gensec_security);
320 if (NT_STATUS_IS_OK(nt_status)) {
321 struct gensec_krb5_state *gensec_krb5_state;
322 gensec_krb5_state = gensec_security->private_data;
323 gensec_krb5_state->gssapi = True;
329 * Check if the packet is one for this mechansim
331 * @param gensec_security GENSEC state
332 * @param in The request, as a DATA_BLOB
333 * @return Error, INVALID_PARAMETER if it's not a packet for us
334 * or NT_STATUS_OK if the packet is ok.
337 static NTSTATUS gensec_fake_gssapi_krb5_magic(struct gensec_security *gensec_security,
340 if (gensec_gssapi_check_oid(in, GENSEC_OID_KERBEROS5)) {
343 return NT_STATUS_INVALID_PARAMETER;
349 * Next state function for the Krb5 GENSEC mechanism
351 * @param gensec_krb5_state KRB5 State
352 * @param out_mem_ctx The TALLOC_CTX for *out to be allocated on
353 * @param in The request, as a DATA_BLOB
354 * @param out The reply, as an talloc()ed DATA_BLOB, on *out_mem_ctx
355 * @return Error, MORE_PROCESSING_REQUIRED if a reply is sent,
356 * or NT_STATUS_OK if the user is authenticated.
359 static NTSTATUS gensec_krb5_update(struct gensec_security *gensec_security,
360 TALLOC_CTX *out_mem_ctx,
361 const DATA_BLOB in, DATA_BLOB *out)
363 struct gensec_krb5_state *gensec_krb5_state = gensec_security->private_data;
364 krb5_error_code ret = 0;
367 switch (gensec_krb5_state->state_position) {
368 case GENSEC_KRB5_CLIENT_START:
370 DATA_BLOB unwrapped_out;
372 if (gensec_krb5_state->gssapi) {
373 unwrapped_out = data_blob_talloc(out_mem_ctx, gensec_krb5_state->enc_ticket.data, gensec_krb5_state->enc_ticket.length);
375 /* wrap that up in a nice GSS-API wrapping */
376 *out = gensec_gssapi_gen_krb5_wrap(out_mem_ctx, &unwrapped_out, TOK_ID_KRB_AP_REQ);
378 *out = data_blob_talloc(out_mem_ctx, gensec_krb5_state->enc_ticket.data, gensec_krb5_state->enc_ticket.length);
380 gensec_krb5_state->state_position = GENSEC_KRB5_CLIENT_MUTUAL_AUTH;
381 nt_status = NT_STATUS_MORE_PROCESSING_REQUIRED;
385 case GENSEC_KRB5_CLIENT_MUTUAL_AUTH:
387 DATA_BLOB unwrapped_in;
389 krb5_ap_rep_enc_part *repl = NULL;
392 if (gensec_krb5_state->gssapi) {
393 if (!gensec_gssapi_parse_krb5_wrap(out_mem_ctx, &in, &unwrapped_in, tok_id)) {
394 DEBUG(1,("gensec_gssapi_parse_krb5_wrap(mutual authentication) failed to parse\n"));
395 dump_data_pw("Mutual authentication message:\n", in.data, in.length);
396 return NT_STATUS_INVALID_PARAMETER;
401 /* TODO: check the tok_id */
403 inbuf.data = unwrapped_in.data;
404 inbuf.length = unwrapped_in.length;
405 ret = krb5_rd_rep(gensec_krb5_state->smb_krb5_context->krb5_context,
406 gensec_krb5_state->auth_context,
409 DEBUG(1,("krb5_rd_rep (mutual authentication) failed (%s)\n",
410 smb_get_krb5_error_message(gensec_krb5_state->smb_krb5_context->krb5_context, ret, out_mem_ctx)));
411 dump_data_pw("Mutual authentication message:\n", inbuf.data, inbuf.length);
412 nt_status = NT_STATUS_ACCESS_DENIED;
414 *out = data_blob(NULL, 0);
415 nt_status = NT_STATUS_OK;
416 gensec_krb5_state->state_position = GENSEC_KRB5_DONE;
419 krb5_free_ap_rep_enc_part(gensec_krb5_state->smb_krb5_context->krb5_context, repl);
424 case GENSEC_KRB5_SERVER_START:
426 DATA_BLOB unwrapped_in;
427 DATA_BLOB unwrapped_out = data_blob(NULL, 0);
431 return NT_STATUS_INVALID_PARAMETER;
434 /* Parse the GSSAPI wrapping, if it's there... (win2k3 allows it to be omited) */
435 if (gensec_krb5_state->gssapi
436 && gensec_gssapi_parse_krb5_wrap(out_mem_ctx, &in, &unwrapped_in, tok_id)) {
437 nt_status = ads_verify_ticket(out_mem_ctx,
438 gensec_krb5_state->smb_krb5_context,
439 &gensec_krb5_state->auth_context,
440 gensec_get_credentials(gensec_security),
441 gensec_get_target_service(gensec_security), &unwrapped_in,
442 &gensec_krb5_state->ticket, &unwrapped_out,
443 &gensec_krb5_state->keyblock);
445 /* TODO: check the tok_id */
446 nt_status = ads_verify_ticket(out_mem_ctx,
447 gensec_krb5_state->smb_krb5_context,
448 &gensec_krb5_state->auth_context,
449 gensec_get_credentials(gensec_security),
450 gensec_get_target_service(gensec_security),
452 &gensec_krb5_state->ticket, &unwrapped_out,
453 &gensec_krb5_state->keyblock);
456 if (!NT_STATUS_IS_OK(nt_status)) {
460 if (NT_STATUS_IS_OK(nt_status)) {
461 gensec_krb5_state->state_position = GENSEC_KRB5_DONE;
462 /* wrap that up in a nice GSS-API wrapping */
463 if (gensec_krb5_state->gssapi) {
464 *out = gensec_gssapi_gen_krb5_wrap(out_mem_ctx, &unwrapped_out, TOK_ID_KRB_AP_REP);
466 *out = unwrapped_out;
472 case GENSEC_KRB5_DONE:
474 /* Asking too many times... */
475 return NT_STATUS_INVALID_PARAMETER;
479 static NTSTATUS gensec_krb5_session_key(struct gensec_security *gensec_security,
480 DATA_BLOB *session_key)
482 struct gensec_krb5_state *gensec_krb5_state = gensec_security->private_data;
483 krb5_context context = gensec_krb5_state->smb_krb5_context->krb5_context;
484 krb5_auth_context auth_context = gensec_krb5_state->auth_context;
486 krb5_error_code err = -1;
488 if (gensec_krb5_state->session_key.data) {
489 *session_key = gensec_krb5_state->session_key;
493 switch (gensec_security->gensec_role) {
495 err = krb5_auth_con_getlocalsubkey(context, auth_context, &skey);
498 err = krb5_auth_con_getremotesubkey(context, auth_context, &skey);
501 if (err == 0 && skey != NULL) {
502 DEBUG(10, ("Got KRB5 session key of length %d\n",
503 (int)KRB5_KEY_LENGTH(skey)));
504 gensec_krb5_state->session_key = data_blob_talloc(gensec_krb5_state,
505 KRB5_KEY_DATA(skey), KRB5_KEY_LENGTH(skey));
506 *session_key = gensec_krb5_state->session_key;
507 dump_data_pw("KRB5 Session Key:\n", session_key->data, session_key->length);
509 krb5_free_keyblock(context, skey);
512 DEBUG(10, ("KRB5 error getting session key %d\n", err));
513 return NT_STATUS_NO_USER_SESSION_KEY;
517 static NTSTATUS gensec_krb5_session_info(struct gensec_security *gensec_security,
518 struct auth_session_info **_session_info)
520 NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
521 struct gensec_krb5_state *gensec_krb5_state = gensec_security->private_data;
522 krb5_context context = gensec_krb5_state->smb_krb5_context->krb5_context;
523 struct auth_serversupplied_info *server_info = NULL;
524 struct auth_session_info *session_info = NULL;
525 struct PAC_LOGON_INFO *logon_info;
527 krb5_principal client_principal;
534 TALLOC_CTX *mem_ctx = talloc_new(gensec_security);
536 return NT_STATUS_NO_MEMORY;
539 ret = krb5_ticket_get_authorization_data_type(context, gensec_krb5_state->ticket,
540 KRB5_AUTHDATA_WIN2K_PAC,
544 DEBUG(5, ("krb5_ticket_get_authorization_data_type failed to find PAC: %s\n",
545 smb_get_krb5_error_message(context,
548 pac = data_blob_talloc(mem_ctx, pac_data.data, pac_data.length);
550 talloc_free(mem_ctx);
551 return NT_STATUS_NO_MEMORY;
554 ret = krb5_ticket_get_client(context, gensec_krb5_state->ticket, &client_principal);
556 DEBUG(5, ("krb5_ticket_get_client failed to get cleint principal: %s\n",
557 smb_get_krb5_error_message(context,
559 talloc_free(mem_ctx);
560 return NT_STATUS_NO_MEMORY;
563 /* decode and verify the pac */
564 nt_status = kerberos_pac_logon_info(gensec_krb5_state, &logon_info, pac,
565 gensec_krb5_state->smb_krb5_context->krb5_context,
566 NULL, gensec_krb5_state->keyblock,
568 gensec_krb5_state->ticket->ticket.authtime, NULL);
569 krb5_free_principal(context, client_principal);
571 if (NT_STATUS_IS_OK(nt_status)) {
572 union netr_Validation validation;
573 validation.sam3 = &logon_info->info3;
574 nt_status = make_server_info_netlogon_validation(mem_ctx,
583 /* IF we have the PAC - otherwise we need to get this
584 * data from elsewere - local ldb, or (TODO) lookup of some
587 if (!NT_STATUS_IS_OK(nt_status)) {
588 /* NO pac, or can't parse or verify it */
589 char *principal_string;
590 ret = krb5_ticket_get_client(context, gensec_krb5_state->ticket, &client_principal);
592 DEBUG(5, ("krb5_ticket_get_client failed to get cleint principal: %s\n",
593 smb_get_krb5_error_message(context,
595 talloc_free(mem_ctx);
596 return NT_STATUS_NO_MEMORY;
599 ret = krb5_unparse_name(gensec_krb5_state->smb_krb5_context->krb5_context,
600 client_principal, &principal_string);
601 krb5_free_principal(context, client_principal);
603 talloc_free(mem_ctx);
604 return NT_STATUS_NO_MEMORY;
607 nt_status = sam_get_server_info_principal(mem_ctx, principal_string,
609 free(principal_string);
611 if (!NT_STATUS_IS_OK(nt_status)) {
612 talloc_free(mem_ctx);
617 /* references the server_info into the session_info */
618 nt_status = auth_generate_session_info(mem_ctx, server_info, &session_info);
620 if (!NT_STATUS_IS_OK(nt_status)) {
621 talloc_free(mem_ctx);
625 nt_status = gensec_krb5_session_key(gensec_security, &session_info->session_key);
627 if (!NT_STATUS_IS_OK(nt_status)) {
628 talloc_free(mem_ctx);
632 *_session_info = session_info;
634 talloc_steal(gensec_krb5_state, session_info);
635 talloc_free(mem_ctx);
639 static NTSTATUS gensec_krb5_wrap(struct gensec_security *gensec_security,
644 struct gensec_krb5_state *gensec_krb5_state = gensec_security->private_data;
645 krb5_context context = gensec_krb5_state->smb_krb5_context->krb5_context;
646 krb5_auth_context auth_context = gensec_krb5_state->auth_context;
648 krb5_data input, output;
649 input.length = in->length;
650 input.data = in->data;
652 if (gensec_have_feature(gensec_security, GENSEC_FEATURE_SEAL)) {
653 ret = krb5_mk_priv(context, auth_context, &input, &output, NULL);
655 DEBUG(1, ("krb5_mk_priv failed: %s\n",
656 smb_get_krb5_error_message(gensec_krb5_state->smb_krb5_context->krb5_context,
658 return NT_STATUS_ACCESS_DENIED;
660 *out = data_blob_talloc(mem_ctx, output.data, output.length);
662 krb5_data_free(&output);
664 return NT_STATUS_ACCESS_DENIED;
669 static NTSTATUS gensec_krb5_unwrap(struct gensec_security *gensec_security,
674 struct gensec_krb5_state *gensec_krb5_state = gensec_security->private_data;
675 krb5_context context = gensec_krb5_state->smb_krb5_context->krb5_context;
676 krb5_auth_context auth_context = gensec_krb5_state->auth_context;
678 krb5_data input, output;
679 krb5_replay_data replay;
680 input.length = in->length;
681 input.data = in->data;
683 if (gensec_have_feature(gensec_security, GENSEC_FEATURE_SEAL)) {
684 ret = krb5_rd_priv(context, auth_context, &input, &output, &replay);
686 DEBUG(1, ("krb5_rd_priv failed: %s\n",
687 smb_get_krb5_error_message(gensec_krb5_state->smb_krb5_context->krb5_context,
689 return NT_STATUS_ACCESS_DENIED;
691 *out = data_blob_talloc(mem_ctx, output.data, output.length);
693 krb5_data_free(&output);
695 return NT_STATUS_ACCESS_DENIED;
700 static BOOL gensec_krb5_have_feature(struct gensec_security *gensec_security,
703 struct gensec_krb5_state *gensec_krb5_state = gensec_security->private_data;
704 if (feature & GENSEC_FEATURE_SESSION_KEY) {
707 if (!gensec_krb5_state->gssapi &&
708 (feature & GENSEC_FEATURE_SEAL)) {
715 static const char *gensec_krb5_oids[] = {
716 GENSEC_OID_KERBEROS5,
717 GENSEC_OID_KERBEROS5_OLD,
721 static const struct gensec_security_ops gensec_fake_gssapi_krb5_security_ops = {
722 .name = "fake_gssapi_krb5",
723 .sasl_name = "GSSAPI",
724 .auth_type = DCERPC_AUTH_TYPE_KRB5,
725 .oid = gensec_krb5_oids,
726 .client_start = gensec_fake_gssapi_krb5_client_start,
727 .server_start = gensec_fake_gssapi_krb5_server_start,
728 .update = gensec_krb5_update,
729 .magic = gensec_fake_gssapi_krb5_magic,
730 .session_key = gensec_krb5_session_key,
731 .session_info = gensec_krb5_session_info,
732 .have_feature = gensec_krb5_have_feature,
737 static const struct gensec_security_ops gensec_krb5_security_ops = {
739 .client_start = gensec_krb5_client_start,
740 .server_start = gensec_krb5_server_start,
741 .update = gensec_krb5_update,
742 .session_key = gensec_krb5_session_key,
743 .session_info = gensec_krb5_session_info,
744 .have_feature = gensec_krb5_have_feature,
745 .wrap = gensec_krb5_wrap,
746 .unwrap = gensec_krb5_unwrap,
751 NTSTATUS gensec_krb5_init(void)
755 ret = gensec_register(&gensec_krb5_security_ops);
756 if (!NT_STATUS_IS_OK(ret)) {
757 DEBUG(0,("Failed to register '%s' gensec backend!\n",
758 gensec_krb5_security_ops.name));
762 ret = gensec_register(&gensec_fake_gssapi_krb5_security_ops);
763 if (!NT_STATUS_IS_OK(ret)) {
764 DEBUG(0,("Failed to register '%s' gensec backend!\n",
765 gensec_krb5_security_ops.name));