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/krb5pac.h"
31 #include "auth/auth.h"
32 #include "lib/ldb/include/ldb.h"
33 #include "auth/auth_sam.h"
34 #include "system/network.h"
35 #include "lib/socket/socket.h"
36 #include "librpc/rpc/dcerpc.h"
37 #include "auth/credentials/credentials.h"
38 #include "auth/credentials/credentials_krb5.h"
39 #include "auth/gensec/gensec.h"
41 enum GENSEC_KRB5_STATE {
42 GENSEC_KRB5_SERVER_START,
43 GENSEC_KRB5_CLIENT_START,
44 GENSEC_KRB5_CLIENT_MUTUAL_AUTH,
48 struct gensec_krb5_state {
49 DATA_BLOB session_key;
51 enum GENSEC_KRB5_STATE state_position;
52 struct smb_krb5_context *smb_krb5_context;
53 krb5_auth_context auth_context;
55 krb5_keyblock *keyblock;
60 static int gensec_krb5_destroy(struct gensec_krb5_state *gensec_krb5_state)
62 if (!gensec_krb5_state->smb_krb5_context) {
63 /* We can't clean anything else up unless we started up this far */
66 if (gensec_krb5_state->enc_ticket.length) {
67 kerberos_free_data_contents(gensec_krb5_state->smb_krb5_context->krb5_context,
68 &gensec_krb5_state->enc_ticket);
71 if (gensec_krb5_state->ticket) {
72 krb5_free_ticket(gensec_krb5_state->smb_krb5_context->krb5_context,
73 gensec_krb5_state->ticket);
76 /* ccache freed in a child destructor */
78 krb5_free_keyblock(gensec_krb5_state->smb_krb5_context->krb5_context,
79 gensec_krb5_state->keyblock);
81 if (gensec_krb5_state->auth_context) {
82 krb5_auth_con_free(gensec_krb5_state->smb_krb5_context->krb5_context,
83 gensec_krb5_state->auth_context);
89 static NTSTATUS gensec_krb5_start(struct gensec_security *gensec_security)
92 struct gensec_krb5_state *gensec_krb5_state;
93 struct cli_credentials *creds;
94 const struct socket_address *my_addr, *peer_addr;
95 krb5_address my_krb5_addr, peer_krb5_addr;
97 creds = gensec_get_credentials(gensec_security);
99 return NT_STATUS_INVALID_PARAMETER;
102 gensec_krb5_state = talloc(gensec_security, struct gensec_krb5_state);
103 if (!gensec_krb5_state) {
104 return NT_STATUS_NO_MEMORY;
107 gensec_security->private_data = gensec_krb5_state;
108 gensec_krb5_state->smb_krb5_context = NULL;
109 gensec_krb5_state->auth_context = NULL;
110 gensec_krb5_state->ticket = NULL;
111 ZERO_STRUCT(gensec_krb5_state->enc_ticket);
112 gensec_krb5_state->keyblock = NULL;
113 gensec_krb5_state->session_key = data_blob(NULL, 0);
114 gensec_krb5_state->pac = data_blob(NULL, 0);
115 gensec_krb5_state->gssapi = False;
117 talloc_set_destructor(gensec_krb5_state, gensec_krb5_destroy);
119 if (cli_credentials_get_krb5_context(creds, &gensec_krb5_state->smb_krb5_context)) {
120 talloc_free(gensec_krb5_state);
121 return NT_STATUS_INTERNAL_ERROR;
124 ret = krb5_auth_con_init(gensec_krb5_state->smb_krb5_context->krb5_context, &gensec_krb5_state->auth_context);
126 DEBUG(1,("gensec_krb5_start: krb5_auth_con_init failed (%s)\n",
127 smb_get_krb5_error_message(gensec_krb5_state->smb_krb5_context->krb5_context,
128 ret, gensec_krb5_state)));
129 talloc_free(gensec_krb5_state);
130 return NT_STATUS_INTERNAL_ERROR;
133 ret = krb5_auth_con_setflags(gensec_krb5_state->smb_krb5_context->krb5_context,
134 gensec_krb5_state->auth_context,
135 KRB5_AUTH_CONTEXT_DO_SEQUENCE);
137 DEBUG(1,("gensec_krb5_start: krb5_auth_con_setflags failed (%s)\n",
138 smb_get_krb5_error_message(gensec_krb5_state->smb_krb5_context->krb5_context,
139 ret, gensec_krb5_state)));
140 talloc_free(gensec_krb5_state);
141 return NT_STATUS_INTERNAL_ERROR;
144 my_addr = gensec_get_my_addr(gensec_security);
145 if (my_addr && my_addr->sockaddr) {
146 ret = krb5_sockaddr2address(gensec_krb5_state->smb_krb5_context->krb5_context,
147 my_addr->sockaddr, &my_krb5_addr);
149 DEBUG(1,("gensec_krb5_start: krb5_sockaddr2address (local) failed (%s)\n",
150 smb_get_krb5_error_message(gensec_krb5_state->smb_krb5_context->krb5_context,
151 ret, gensec_krb5_state)));
152 talloc_free(gensec_krb5_state);
153 return NT_STATUS_INTERNAL_ERROR;
157 peer_addr = gensec_get_peer_addr(gensec_security);
158 if (peer_addr && peer_addr->sockaddr) {
159 ret = krb5_sockaddr2address(gensec_krb5_state->smb_krb5_context->krb5_context,
160 peer_addr->sockaddr, &peer_krb5_addr);
162 DEBUG(1,("gensec_krb5_start: krb5_sockaddr2address (local) failed (%s)\n",
163 smb_get_krb5_error_message(gensec_krb5_state->smb_krb5_context->krb5_context,
164 ret, gensec_krb5_state)));
165 talloc_free(gensec_krb5_state);
166 return NT_STATUS_INTERNAL_ERROR;
170 ret = krb5_auth_con_setaddrs(gensec_krb5_state->smb_krb5_context->krb5_context,
171 gensec_krb5_state->auth_context,
172 my_addr ? &my_krb5_addr : NULL,
173 peer_addr ? &peer_krb5_addr : NULL);
175 DEBUG(1,("gensec_krb5_start: krb5_auth_con_setaddrs failed (%s)\n",
176 smb_get_krb5_error_message(gensec_krb5_state->smb_krb5_context->krb5_context,
177 ret, gensec_krb5_state)));
178 talloc_free(gensec_krb5_state);
179 return NT_STATUS_INTERNAL_ERROR;
185 static NTSTATUS gensec_krb5_server_start(struct gensec_security *gensec_security)
188 struct gensec_krb5_state *gensec_krb5_state;
190 nt_status = gensec_krb5_start(gensec_security);
191 if (!NT_STATUS_IS_OK(nt_status)) {
195 gensec_krb5_state = gensec_security->private_data;
196 gensec_krb5_state->state_position = GENSEC_KRB5_SERVER_START;
201 static NTSTATUS gensec_fake_gssapi_krb5_server_start(struct gensec_security *gensec_security)
203 NTSTATUS nt_status = gensec_krb5_server_start(gensec_security);
205 if (NT_STATUS_IS_OK(nt_status)) {
206 struct gensec_krb5_state *gensec_krb5_state;
207 gensec_krb5_state = gensec_security->private_data;
208 gensec_krb5_state->gssapi = True;
213 static NTSTATUS gensec_krb5_client_start(struct gensec_security *gensec_security)
215 struct gensec_krb5_state *gensec_krb5_state;
218 struct ccache_container *ccache_container;
219 const char *hostname;
220 krb5_flags ap_req_options = AP_OPTS_USE_SUBKEY | AP_OPTS_MUTUAL_REQUIRED;
222 const char *principal;
225 hostname = gensec_get_target_hostname(gensec_security);
227 DEBUG(1, ("Could not determine hostname for target computer, cannot use kerberos\n"));
228 return NT_STATUS_INVALID_PARAMETER;
230 if (is_ipaddress(hostname)) {
231 DEBUG(2, ("Cannot do krb5 to an IP address"));
232 return NT_STATUS_INVALID_PARAMETER;
234 if (strcmp(hostname, "localhost") == 0) {
235 DEBUG(2, ("krb5 to 'localhost' does not make sense"));
236 return NT_STATUS_INVALID_PARAMETER;
239 nt_status = gensec_krb5_start(gensec_security);
240 if (!NT_STATUS_IS_OK(nt_status)) {
244 gensec_krb5_state = gensec_security->private_data;
245 gensec_krb5_state->state_position = GENSEC_KRB5_CLIENT_START;
247 ret = cli_credentials_get_ccache(gensec_get_credentials(gensec_security), &ccache_container);
249 DEBUG(1,("gensec_krb5_start: cli_credentials_get_ccache failed: %s\n",
250 error_message(ret)));
251 return NT_STATUS_UNSUCCESSFUL;
256 principal = gensec_get_target_principal(gensec_security);
257 if (principal && lp_client_use_spnego_principal()) {
258 krb5_principal target_principal;
259 ret = krb5_parse_name(gensec_krb5_state->smb_krb5_context->krb5_context, principal,
262 ret = krb5_mk_req_exact(gensec_krb5_state->smb_krb5_context->krb5_context,
263 &gensec_krb5_state->auth_context,
266 &in_data, ccache_container->ccache,
267 &gensec_krb5_state->enc_ticket);
268 krb5_free_principal(gensec_krb5_state->smb_krb5_context->krb5_context,
272 ret = krb5_mk_req(gensec_krb5_state->smb_krb5_context->krb5_context,
273 &gensec_krb5_state->auth_context,
275 gensec_get_target_service(gensec_security),
277 &in_data, ccache_container->ccache,
278 &gensec_krb5_state->enc_ticket);
283 case KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN:
284 DEBUG(3, ("Server [%s] is not registered with our KDC: %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 KRB5_KDC_UNREACH:
288 DEBUG(3, ("Cannot reach a KDC we require to contact host [%s]: %s\n",
289 hostname, smb_get_krb5_error_message(gensec_krb5_state->smb_krb5_context->krb5_context, ret, gensec_krb5_state)));
290 return NT_STATUS_INVALID_PARAMETER; /* Make SPNEGO ignore us, we can't go any further here */
291 case KRB5KDC_ERR_PREAUTH_FAILED:
292 case KRB5KRB_AP_ERR_TKT_EXPIRED:
294 /* Too much clock skew - we will need to kinit to re-skew the clock */
295 case KRB5KRB_AP_ERR_SKEW:
296 case KRB5_KDCREP_SKEW:
298 DEBUG(3, ("kerberos (mk_req) failed: %s\n",
299 smb_get_krb5_error_message(gensec_krb5_state->smb_krb5_context->krb5_context, ret, gensec_krb5_state)));
303 /* just don't print a message for these really ordinary messages */
304 case KRB5_FCC_NOFILE:
305 case KRB5_CC_NOTFOUND:
308 return NT_STATUS_UNSUCCESSFUL;
312 DEBUG(0, ("kerberos: %s\n",
313 smb_get_krb5_error_message(gensec_krb5_state->smb_krb5_context->krb5_context, ret, gensec_krb5_state)));
314 return NT_STATUS_UNSUCCESSFUL;
318 static NTSTATUS gensec_fake_gssapi_krb5_client_start(struct gensec_security *gensec_security)
320 NTSTATUS nt_status = gensec_krb5_client_start(gensec_security);
322 if (NT_STATUS_IS_OK(nt_status)) {
323 struct gensec_krb5_state *gensec_krb5_state;
324 gensec_krb5_state = gensec_security->private_data;
325 gensec_krb5_state->gssapi = True;
331 * Check if the packet is one for this mechansim
333 * @param gensec_security GENSEC state
334 * @param in The request, as a DATA_BLOB
335 * @return Error, INVALID_PARAMETER if it's not a packet for us
336 * or NT_STATUS_OK if the packet is ok.
339 static NTSTATUS gensec_fake_gssapi_krb5_magic(struct gensec_security *gensec_security,
342 if (gensec_gssapi_check_oid(in, GENSEC_OID_KERBEROS5)) {
345 return NT_STATUS_INVALID_PARAMETER;
351 * Next state function for the Krb5 GENSEC mechanism
353 * @param gensec_krb5_state KRB5 State
354 * @param out_mem_ctx The TALLOC_CTX for *out to be allocated on
355 * @param in The request, as a DATA_BLOB
356 * @param out The reply, as an talloc()ed DATA_BLOB, on *out_mem_ctx
357 * @return Error, MORE_PROCESSING_REQUIRED if a reply is sent,
358 * or NT_STATUS_OK if the user is authenticated.
361 static NTSTATUS gensec_krb5_update(struct gensec_security *gensec_security,
362 TALLOC_CTX *out_mem_ctx,
363 const DATA_BLOB in, DATA_BLOB *out)
365 struct gensec_krb5_state *gensec_krb5_state = gensec_security->private_data;
366 krb5_error_code ret = 0;
369 switch (gensec_krb5_state->state_position) {
370 case GENSEC_KRB5_CLIENT_START:
372 DATA_BLOB unwrapped_out;
374 if (gensec_krb5_state->gssapi) {
375 unwrapped_out = data_blob_talloc(out_mem_ctx, gensec_krb5_state->enc_ticket.data, gensec_krb5_state->enc_ticket.length);
377 /* wrap that up in a nice GSS-API wrapping */
378 *out = gensec_gssapi_gen_krb5_wrap(out_mem_ctx, &unwrapped_out, TOK_ID_KRB_AP_REQ);
380 *out = data_blob_talloc(out_mem_ctx, gensec_krb5_state->enc_ticket.data, gensec_krb5_state->enc_ticket.length);
382 gensec_krb5_state->state_position = GENSEC_KRB5_CLIENT_MUTUAL_AUTH;
383 nt_status = NT_STATUS_MORE_PROCESSING_REQUIRED;
387 case GENSEC_KRB5_CLIENT_MUTUAL_AUTH:
389 DATA_BLOB unwrapped_in;
391 krb5_ap_rep_enc_part *repl = NULL;
394 if (gensec_krb5_state->gssapi) {
395 if (!gensec_gssapi_parse_krb5_wrap(out_mem_ctx, &in, &unwrapped_in, tok_id)) {
396 DEBUG(1,("gensec_gssapi_parse_krb5_wrap(mutual authentication) failed to parse\n"));
397 dump_data_pw("Mutual authentication message:\n", in.data, in.length);
398 return NT_STATUS_INVALID_PARAMETER;
403 /* TODO: check the tok_id */
405 inbuf.data = unwrapped_in.data;
406 inbuf.length = unwrapped_in.length;
407 ret = krb5_rd_rep(gensec_krb5_state->smb_krb5_context->krb5_context,
408 gensec_krb5_state->auth_context,
411 DEBUG(1,("krb5_rd_rep (mutual authentication) failed (%s)\n",
412 smb_get_krb5_error_message(gensec_krb5_state->smb_krb5_context->krb5_context, ret, out_mem_ctx)));
413 dump_data_pw("Mutual authentication message:\n", inbuf.data, inbuf.length);
414 nt_status = NT_STATUS_ACCESS_DENIED;
416 *out = data_blob(NULL, 0);
417 nt_status = NT_STATUS_OK;
418 gensec_krb5_state->state_position = GENSEC_KRB5_DONE;
421 krb5_free_ap_rep_enc_part(gensec_krb5_state->smb_krb5_context->krb5_context, repl);
426 case GENSEC_KRB5_SERVER_START:
428 DATA_BLOB unwrapped_in;
429 DATA_BLOB unwrapped_out = data_blob(NULL, 0);
433 return NT_STATUS_INVALID_PARAMETER;
436 /* Parse the GSSAPI wrapping, if it's there... (win2k3 allows it to be omited) */
437 if (gensec_krb5_state->gssapi
438 && gensec_gssapi_parse_krb5_wrap(out_mem_ctx, &in, &unwrapped_in, tok_id)) {
439 nt_status = ads_verify_ticket(out_mem_ctx,
440 gensec_krb5_state->smb_krb5_context,
441 &gensec_krb5_state->auth_context,
442 gensec_get_credentials(gensec_security),
443 gensec_get_target_service(gensec_security), &unwrapped_in,
444 &gensec_krb5_state->ticket, &unwrapped_out,
445 &gensec_krb5_state->keyblock);
447 /* TODO: check the tok_id */
448 nt_status = ads_verify_ticket(out_mem_ctx,
449 gensec_krb5_state->smb_krb5_context,
450 &gensec_krb5_state->auth_context,
451 gensec_get_credentials(gensec_security),
452 gensec_get_target_service(gensec_security),
454 &gensec_krb5_state->ticket, &unwrapped_out,
455 &gensec_krb5_state->keyblock);
458 if (!NT_STATUS_IS_OK(nt_status)) {
462 if (NT_STATUS_IS_OK(nt_status)) {
463 gensec_krb5_state->state_position = GENSEC_KRB5_DONE;
464 /* wrap that up in a nice GSS-API wrapping */
465 if (gensec_krb5_state->gssapi) {
466 *out = gensec_gssapi_gen_krb5_wrap(out_mem_ctx, &unwrapped_out, TOK_ID_KRB_AP_REP);
468 *out = unwrapped_out;
474 case GENSEC_KRB5_DONE:
476 /* Asking too many times... */
477 return NT_STATUS_INVALID_PARAMETER;
481 static NTSTATUS gensec_krb5_session_key(struct gensec_security *gensec_security,
482 DATA_BLOB *session_key)
484 struct gensec_krb5_state *gensec_krb5_state = gensec_security->private_data;
485 krb5_context context = gensec_krb5_state->smb_krb5_context->krb5_context;
486 krb5_auth_context auth_context = gensec_krb5_state->auth_context;
488 krb5_error_code err = -1;
490 if (gensec_krb5_state->session_key.data) {
491 *session_key = gensec_krb5_state->session_key;
495 switch (gensec_security->gensec_role) {
497 err = krb5_auth_con_getlocalsubkey(context, auth_context, &skey);
500 err = krb5_auth_con_getremotesubkey(context, auth_context, &skey);
503 if (err == 0 && skey != NULL) {
504 DEBUG(10, ("Got KRB5 session key of length %d\n",
505 (int)KRB5_KEY_LENGTH(skey)));
506 gensec_krb5_state->session_key = data_blob_talloc(gensec_krb5_state,
507 KRB5_KEY_DATA(skey), KRB5_KEY_LENGTH(skey));
508 *session_key = gensec_krb5_state->session_key;
509 dump_data_pw("KRB5 Session Key:\n", session_key->data, session_key->length);
511 krb5_free_keyblock(context, skey);
514 DEBUG(10, ("KRB5 error getting session key %d\n", err));
515 return NT_STATUS_NO_USER_SESSION_KEY;
519 static NTSTATUS gensec_krb5_session_info(struct gensec_security *gensec_security,
520 struct auth_session_info **_session_info)
522 NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
523 struct gensec_krb5_state *gensec_krb5_state = gensec_security->private_data;
524 krb5_context context = gensec_krb5_state->smb_krb5_context->krb5_context;
525 struct auth_serversupplied_info *server_info = NULL;
526 struct auth_session_info *session_info = NULL;
527 struct PAC_LOGON_INFO *logon_info;
529 krb5_principal client_principal;
530 char *principal_string;
537 TALLOC_CTX *mem_ctx = talloc_new(gensec_security);
539 return NT_STATUS_NO_MEMORY;
542 ret = krb5_ticket_get_client(context, gensec_krb5_state->ticket, &client_principal);
544 DEBUG(5, ("krb5_ticket_get_client failed to get cleint principal: %s\n",
545 smb_get_krb5_error_message(context,
547 talloc_free(mem_ctx);
548 return NT_STATUS_NO_MEMORY;
551 ret = krb5_unparse_name(gensec_krb5_state->smb_krb5_context->krb5_context,
552 client_principal, &principal_string);
554 DEBUG(1, ("Unable to parse client principal: %s\n",
555 smb_get_krb5_error_message(context,
557 talloc_free(mem_ctx);
558 return NT_STATUS_NO_MEMORY;
561 ret = krb5_ticket_get_authorization_data_type(context, gensec_krb5_state->ticket,
562 KRB5_AUTHDATA_WIN2K_PAC,
565 if (ret && lp_parm_bool(-1, "gensec", "require_pac", False)) {
566 DEBUG(1, ("Unable to find PAC in ticket from %s, failing to allow access: %s \n",
568 smb_get_krb5_error_message(context,
570 krb5_free_principal(context, client_principal);
571 free(principal_string);
572 return NT_STATUS_ACCESS_DENIED;
575 DEBUG(5, ("krb5_ticket_get_authorization_data_type failed to find PAC: %s\n",
576 smb_get_krb5_error_message(context,
578 nt_status = sam_get_server_info_principal(mem_ctx, principal_string,
580 krb5_free_principal(context, client_principal);
581 free(principal_string);
583 if (!NT_STATUS_IS_OK(nt_status)) {
584 talloc_free(mem_ctx);
589 union netr_Validation validation;
590 free(principal_string);
592 pac = data_blob_talloc(mem_ctx, pac_data.data, pac_data.length);
594 krb5_free_principal(context, client_principal);
595 talloc_free(mem_ctx);
596 return NT_STATUS_NO_MEMORY;
599 /* decode and verify the pac */
600 nt_status = kerberos_pac_logon_info(gensec_krb5_state, &logon_info, pac,
601 gensec_krb5_state->smb_krb5_context->krb5_context,
602 NULL, gensec_krb5_state->keyblock,
604 gensec_krb5_state->ticket->ticket.authtime, NULL);
605 krb5_free_principal(context, client_principal);
607 if (!NT_STATUS_IS_OK(nt_status)) {
608 talloc_free(mem_ctx);
612 validation.sam3 = &logon_info->info3;
613 nt_status = make_server_info_netlogon_validation(mem_ctx,
617 if (!NT_STATUS_IS_OK(nt_status)) {
618 talloc_free(mem_ctx);
623 /* references the server_info into the session_info */
624 nt_status = auth_generate_session_info(mem_ctx, server_info, &session_info);
626 if (!NT_STATUS_IS_OK(nt_status)) {
627 talloc_free(mem_ctx);
631 nt_status = gensec_krb5_session_key(gensec_security, &session_info->session_key);
633 if (!NT_STATUS_IS_OK(nt_status)) {
634 talloc_free(mem_ctx);
638 *_session_info = session_info;
640 talloc_steal(gensec_krb5_state, session_info);
641 talloc_free(mem_ctx);
645 static NTSTATUS gensec_krb5_wrap(struct gensec_security *gensec_security,
650 struct gensec_krb5_state *gensec_krb5_state = gensec_security->private_data;
651 krb5_context context = gensec_krb5_state->smb_krb5_context->krb5_context;
652 krb5_auth_context auth_context = gensec_krb5_state->auth_context;
654 krb5_data input, output;
655 input.length = in->length;
656 input.data = in->data;
658 if (gensec_have_feature(gensec_security, GENSEC_FEATURE_SEAL)) {
659 ret = krb5_mk_priv(context, auth_context, &input, &output, NULL);
661 DEBUG(1, ("krb5_mk_priv failed: %s\n",
662 smb_get_krb5_error_message(gensec_krb5_state->smb_krb5_context->krb5_context,
664 return NT_STATUS_ACCESS_DENIED;
666 *out = data_blob_talloc(mem_ctx, output.data, output.length);
668 krb5_data_free(&output);
670 return NT_STATUS_ACCESS_DENIED;
675 static NTSTATUS gensec_krb5_unwrap(struct gensec_security *gensec_security,
680 struct gensec_krb5_state *gensec_krb5_state = gensec_security->private_data;
681 krb5_context context = gensec_krb5_state->smb_krb5_context->krb5_context;
682 krb5_auth_context auth_context = gensec_krb5_state->auth_context;
684 krb5_data input, output;
685 krb5_replay_data replay;
686 input.length = in->length;
687 input.data = in->data;
689 if (gensec_have_feature(gensec_security, GENSEC_FEATURE_SEAL)) {
690 ret = krb5_rd_priv(context, auth_context, &input, &output, &replay);
692 DEBUG(1, ("krb5_rd_priv failed: %s\n",
693 smb_get_krb5_error_message(gensec_krb5_state->smb_krb5_context->krb5_context,
695 return NT_STATUS_ACCESS_DENIED;
697 *out = data_blob_talloc(mem_ctx, output.data, output.length);
699 krb5_data_free(&output);
701 return NT_STATUS_ACCESS_DENIED;
706 static BOOL gensec_krb5_have_feature(struct gensec_security *gensec_security,
709 struct gensec_krb5_state *gensec_krb5_state = gensec_security->private_data;
710 if (feature & GENSEC_FEATURE_SESSION_KEY) {
713 if (!gensec_krb5_state->gssapi &&
714 (feature & GENSEC_FEATURE_SEAL)) {
721 static const char *gensec_krb5_oids[] = {
722 GENSEC_OID_KERBEROS5,
723 GENSEC_OID_KERBEROS5_OLD,
727 static const struct gensec_security_ops gensec_fake_gssapi_krb5_security_ops = {
728 .name = "fake_gssapi_krb5",
729 .auth_type = DCERPC_AUTH_TYPE_KRB5,
730 .oid = gensec_krb5_oids,
731 .client_start = gensec_fake_gssapi_krb5_client_start,
732 .server_start = gensec_fake_gssapi_krb5_server_start,
733 .update = gensec_krb5_update,
734 .magic = gensec_fake_gssapi_krb5_magic,
735 .session_key = gensec_krb5_session_key,
736 .session_info = gensec_krb5_session_info,
737 .have_feature = gensec_krb5_have_feature,
740 .priority = GENSEC_KRB5
743 static const struct gensec_security_ops gensec_krb5_security_ops = {
745 .client_start = gensec_krb5_client_start,
746 .server_start = gensec_krb5_server_start,
747 .update = gensec_krb5_update,
748 .session_key = gensec_krb5_session_key,
749 .session_info = gensec_krb5_session_info,
750 .have_feature = gensec_krb5_have_feature,
751 .wrap = gensec_krb5_wrap,
752 .unwrap = gensec_krb5_unwrap,
755 .priority = GENSEC_KRB5
758 NTSTATUS gensec_krb5_init(void)
764 ret = gensec_register(&gensec_krb5_security_ops);
765 if (!NT_STATUS_IS_OK(ret)) {
766 DEBUG(0,("Failed to register '%s' gensec backend!\n",
767 gensec_krb5_security_ops.name));
771 ret = gensec_register(&gensec_fake_gssapi_krb5_security_ops);
772 if (!NT_STATUS_IS_OK(ret)) {
773 DEBUG(0,("Failed to register '%s' gensec backend!\n",
774 gensec_krb5_security_ops.name));