Line data Source code
1 : /*
2 : Unix SMB/CIFS implementation.
3 :
4 : Create and parse the krb5 PAC
5 :
6 : Copyright (C) Andrew Bartlett <abartlet@samba.org> 2004-2005,2008
7 : Copyright (C) Andrew Tridgell 2001
8 : Copyright (C) Luke Howard 2002-2003
9 : Copyright (C) Stefan Metzmacher 2004-2005
10 :
11 : This program is free software; you can redistribute it and/or modify
12 : it under the terms of the GNU General Public License as published by
13 : the Free Software Foundation; either version 3 of the License, or
14 : (at your option) any later version.
15 :
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.
20 :
21 :
22 : You should have received a copy of the GNU General Public License
23 : along with this program. If not, see <http://www.gnu.org/licenses/>.
24 : */
25 :
26 : #include "includes.h"
27 : #include "system/kerberos.h"
28 : #include "auth/auth.h"
29 : #include "auth/kerberos/kerberos.h"
30 : #include "librpc/gen_ndr/ndr_krb5pac.h"
31 : #include <ldb.h>
32 : #include "auth/auth_sam_reply.h"
33 : #include "auth/credentials/credentials.h"
34 : #include "auth/kerberos/kerberos_util.h"
35 : #include "auth/kerberos/pac_utils.h"
36 :
37 3 : krb5_error_code kerberos_encode_pac(TALLOC_CTX *mem_ctx,
38 : struct PAC_DATA *pac_data,
39 : krb5_context context,
40 : const krb5_keyblock *krbtgt_keyblock,
41 : const krb5_keyblock *service_keyblock,
42 : DATA_BLOB *pac)
43 : {
44 3 : NTSTATUS nt_status;
45 3 : krb5_error_code ret;
46 3 : enum ndr_err_code ndr_err;
47 3 : DATA_BLOB zero_blob = data_blob(NULL, 0);
48 3 : DATA_BLOB tmp_blob = data_blob(NULL, 0);
49 3 : struct PAC_SIGNATURE_DATA *kdc_checksum = NULL;
50 3 : struct PAC_SIGNATURE_DATA *srv_checksum = NULL;
51 3 : uint32_t i;
52 :
53 : /* First, just get the keytypes filled in (and lengths right, eventually) */
54 18 : for (i=0; i < pac_data->num_buffers; i++) {
55 12 : if (pac_data->buffers[i].type != PAC_TYPE_KDC_CHECKSUM) {
56 9 : continue;
57 : }
58 3 : kdc_checksum = &pac_data->buffers[i].info->kdc_cksum,
59 3 : ret = smb_krb5_make_pac_checksum(mem_ctx,
60 : &zero_blob,
61 : context,
62 : krbtgt_keyblock,
63 : &kdc_checksum->type,
64 : &kdc_checksum->signature);
65 3 : if (ret) {
66 0 : DEBUG(2, ("making krbtgt PAC checksum failed: %s\n",
67 : smb_get_krb5_error_message(context, ret, mem_ctx)));
68 0 : talloc_free(pac_data);
69 0 : return ret;
70 : }
71 : }
72 :
73 15 : for (i=0; i < pac_data->num_buffers; i++) {
74 12 : if (pac_data->buffers[i].type != PAC_TYPE_SRV_CHECKSUM) {
75 9 : continue;
76 : }
77 3 : srv_checksum = &pac_data->buffers[i].info->srv_cksum;
78 3 : ret = smb_krb5_make_pac_checksum(mem_ctx,
79 : &zero_blob,
80 : context,
81 : service_keyblock,
82 : &srv_checksum->type,
83 : &srv_checksum->signature);
84 3 : if (ret) {
85 0 : DEBUG(2, ("making service PAC checksum failed: %s\n",
86 : smb_get_krb5_error_message(context, ret, mem_ctx)));
87 0 : talloc_free(pac_data);
88 0 : return ret;
89 : }
90 : }
91 :
92 3 : if (!kdc_checksum) {
93 0 : DEBUG(2, ("Invalid PAC constructed for signing, no KDC checksum present!\n"));
94 0 : return EINVAL;
95 : }
96 3 : if (!srv_checksum) {
97 0 : DEBUG(2, ("Invalid PAC constructed for signing, no SRV checksum present!\n"));
98 0 : return EINVAL;
99 : }
100 :
101 : /* But wipe out the actual signatures */
102 3 : memset(kdc_checksum->signature.data, '\0', kdc_checksum->signature.length);
103 3 : memset(srv_checksum->signature.data, '\0', srv_checksum->signature.length);
104 :
105 3 : ndr_err = ndr_push_struct_blob(&tmp_blob, mem_ctx,
106 : pac_data,
107 : (ndr_push_flags_fn_t)ndr_push_PAC_DATA);
108 3 : if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
109 0 : nt_status = ndr_map_error2ntstatus(ndr_err);
110 0 : DEBUG(1, ("PAC (presig) push failed: %s\n", nt_errstr(nt_status)));
111 0 : talloc_free(pac_data);
112 0 : return EINVAL;
113 : }
114 :
115 : /* Then sign the result of the previous push, where the sig was zero'ed out */
116 3 : ret = smb_krb5_make_pac_checksum(mem_ctx,
117 : &tmp_blob,
118 : context,
119 : service_keyblock,
120 : &srv_checksum->type,
121 : &srv_checksum->signature);
122 :
123 3 : if (ret) {
124 0 : DBG_WARNING("making krbtgt PAC srv_checksum failed: %s\n",
125 : smb_get_krb5_error_message(context, ret, mem_ctx));
126 0 : talloc_free(pac_data);
127 0 : return ret;
128 : }
129 :
130 : /* Then sign Server checksum */
131 3 : ret = smb_krb5_make_pac_checksum(mem_ctx,
132 : &srv_checksum->signature,
133 : context,
134 : krbtgt_keyblock,
135 : &kdc_checksum->type,
136 : &kdc_checksum->signature);
137 3 : if (ret) {
138 0 : DBG_WARNING("making krbtgt PAC kdc_checksum failed: %s\n",
139 : smb_get_krb5_error_message(context, ret, mem_ctx));
140 0 : talloc_free(pac_data);
141 0 : return ret;
142 : }
143 :
144 : /* And push it out again, this time to the world. This relies on deterministic pointer values */
145 3 : ndr_err = ndr_push_struct_blob(&tmp_blob, mem_ctx,
146 : pac_data,
147 : (ndr_push_flags_fn_t)ndr_push_PAC_DATA);
148 3 : if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
149 0 : nt_status = ndr_map_error2ntstatus(ndr_err);
150 0 : DEBUG(1, ("PAC (final) push failed: %s\n", nt_errstr(nt_status)));
151 0 : talloc_free(pac_data);
152 0 : return EINVAL;
153 : }
154 :
155 3 : *pac = tmp_blob;
156 :
157 3 : return ret;
158 : }
159 :
160 :
161 2 : krb5_error_code kerberos_create_pac(TALLOC_CTX *mem_ctx,
162 : struct auth_user_info_dc *user_info_dc,
163 : krb5_context context,
164 : const krb5_keyblock *krbtgt_keyblock,
165 : const krb5_keyblock *service_keyblock,
166 : krb5_principal client_principal,
167 : time_t tgs_authtime,
168 : DATA_BLOB *pac)
169 : {
170 2 : NTSTATUS nt_status;
171 2 : krb5_error_code ret;
172 2 : struct PAC_DATA *pac_data = talloc(mem_ctx, struct PAC_DATA);
173 2 : struct netr_SamInfo3 *sam3;
174 2 : union PAC_INFO *u_LOGON_INFO;
175 2 : struct PAC_LOGON_INFO *LOGON_INFO;
176 2 : union PAC_INFO *u_LOGON_NAME;
177 2 : struct PAC_LOGON_NAME *LOGON_NAME;
178 2 : union PAC_INFO *u_KDC_CHECKSUM;
179 2 : union PAC_INFO *u_SRV_CHECKSUM;
180 :
181 2 : char *name;
182 :
183 2 : enum {
184 : PAC_BUF_LOGON_INFO = 0,
185 : PAC_BUF_LOGON_NAME = 1,
186 : PAC_BUF_SRV_CHECKSUM = 2,
187 : PAC_BUF_KDC_CHECKSUM = 3,
188 : PAC_BUF_NUM_BUFFERS = 4
189 : };
190 :
191 2 : if (!pac_data) {
192 0 : return ENOMEM;
193 : }
194 :
195 2 : pac_data->num_buffers = PAC_BUF_NUM_BUFFERS;
196 2 : pac_data->version = 0;
197 :
198 2 : pac_data->buffers = talloc_array(pac_data,
199 : struct PAC_BUFFER,
200 : pac_data->num_buffers);
201 2 : if (!pac_data->buffers) {
202 0 : talloc_free(pac_data);
203 0 : return ENOMEM;
204 : }
205 :
206 : /* LOGON_INFO */
207 2 : u_LOGON_INFO = talloc_zero(pac_data->buffers, union PAC_INFO);
208 2 : if (!u_LOGON_INFO) {
209 0 : talloc_free(pac_data);
210 0 : return ENOMEM;
211 : }
212 2 : pac_data->buffers[PAC_BUF_LOGON_INFO].type = PAC_TYPE_LOGON_INFO;
213 2 : pac_data->buffers[PAC_BUF_LOGON_INFO].info = u_LOGON_INFO;
214 :
215 : /* LOGON_NAME */
216 2 : u_LOGON_NAME = talloc_zero(pac_data->buffers, union PAC_INFO);
217 2 : if (!u_LOGON_NAME) {
218 0 : talloc_free(pac_data);
219 0 : return ENOMEM;
220 : }
221 2 : pac_data->buffers[PAC_BUF_LOGON_NAME].type = PAC_TYPE_LOGON_NAME;
222 2 : pac_data->buffers[PAC_BUF_LOGON_NAME].info = u_LOGON_NAME;
223 2 : LOGON_NAME = &u_LOGON_NAME->logon_name;
224 :
225 : /* SRV_CHECKSUM */
226 2 : u_SRV_CHECKSUM = talloc_zero(pac_data->buffers, union PAC_INFO);
227 2 : if (!u_SRV_CHECKSUM) {
228 0 : talloc_free(pac_data);
229 0 : return ENOMEM;
230 : }
231 2 : pac_data->buffers[PAC_BUF_SRV_CHECKSUM].type = PAC_TYPE_SRV_CHECKSUM;
232 2 : pac_data->buffers[PAC_BUF_SRV_CHECKSUM].info = u_SRV_CHECKSUM;
233 :
234 : /* KDC_CHECKSUM */
235 2 : u_KDC_CHECKSUM = talloc_zero(pac_data->buffers, union PAC_INFO);
236 2 : if (!u_KDC_CHECKSUM) {
237 0 : talloc_free(pac_data);
238 0 : return ENOMEM;
239 : }
240 2 : pac_data->buffers[PAC_BUF_KDC_CHECKSUM].type = PAC_TYPE_KDC_CHECKSUM;
241 2 : pac_data->buffers[PAC_BUF_KDC_CHECKSUM].info = u_KDC_CHECKSUM;
242 :
243 : /* now the real work begins... */
244 :
245 2 : LOGON_INFO = talloc_zero(u_LOGON_INFO, struct PAC_LOGON_INFO);
246 2 : if (!LOGON_INFO) {
247 0 : talloc_free(pac_data);
248 0 : return ENOMEM;
249 : }
250 2 : nt_status = auth_convert_user_info_dc_saminfo3(LOGON_INFO, user_info_dc,
251 : AUTH_INCLUDE_RESOURCE_GROUPS,
252 : &sam3, NULL);
253 2 : if (!NT_STATUS_IS_OK(nt_status)) {
254 0 : DEBUG(1, ("Getting Samba info failed: %s\n", nt_errstr(nt_status)));
255 0 : talloc_free(pac_data);
256 0 : return EINVAL;
257 : }
258 :
259 2 : u_LOGON_INFO->logon_info.info = LOGON_INFO;
260 2 : LOGON_INFO->info3 = *sam3;
261 :
262 2 : ret = krb5_unparse_name_flags(context, client_principal,
263 : KRB5_PRINCIPAL_UNPARSE_NO_REALM |
264 : KRB5_PRINCIPAL_UNPARSE_DISPLAY,
265 : &name);
266 2 : if (ret) {
267 0 : return ret;
268 : }
269 2 : LOGON_NAME->account_name = talloc_strdup(LOGON_NAME, name);
270 2 : free(name);
271 : /*
272 : this logon_time field is absolutely critical. This is what
273 : caused all our PAC troubles :-)
274 : */
275 2 : unix_to_nt_time(&LOGON_NAME->logon_time, tgs_authtime);
276 :
277 2 : ret = kerberos_encode_pac(mem_ctx,
278 : pac_data,
279 : context,
280 : krbtgt_keyblock,
281 : service_keyblock,
282 : pac);
283 2 : talloc_free(pac_data);
284 2 : return ret;
285 : }
286 :
287 82257 : static krb5_error_code kerberos_pac_buffer_present(krb5_context context,
288 : const krb5_const_pac pac,
289 : uint32_t type)
290 : {
291 : #ifdef SAMBA4_USES_HEIMDAL
292 74284 : return krb5_pac_get_buffer(context, pac, type, NULL);
293 : #else /* MIT */
294 : krb5_error_code ret;
295 : krb5_data data;
296 :
297 : /*
298 : * MIT won't let us pass NULL for the data parameter, so we are forced
299 : * to allocate a new buffer and then immediately free it.
300 : */
301 7973 : ret = krb5_pac_get_buffer(context, pac, type, &data);
302 7973 : if (ret == 0) {
303 4 : krb5_free_data_contents(context, &data);
304 : }
305 7973 : return ret;
306 : #endif /* SAMBA4_USES_HEIMDAL */
307 : }
308 :
309 82257 : krb5_error_code kerberos_pac_to_user_info_dc(TALLOC_CTX *mem_ctx,
310 : krb5_const_pac pac,
311 : krb5_context context,
312 : struct auth_user_info_dc **user_info_dc,
313 : const enum auth_group_inclusion group_inclusion,
314 : struct PAC_SIGNATURE_DATA *pac_srv_sig,
315 : struct PAC_SIGNATURE_DATA *pac_kdc_sig,
316 : struct PAC_DOMAIN_GROUP_MEMBERSHIP **resource_groups)
317 : {
318 2541 : NTSTATUS nt_status;
319 2541 : enum ndr_err_code ndr_err;
320 2541 : krb5_error_code ret;
321 :
322 2541 : DATA_BLOB pac_logon_info_in, pac_srv_checksum_in, pac_kdc_checksum_in;
323 2541 : krb5_data k5pac_logon_info_in, k5pac_srv_checksum_in, k5pac_kdc_checksum_in;
324 2541 : DATA_BLOB pac_upn_dns_info_in;
325 2541 : krb5_data k5pac_upn_dns_info_in;
326 :
327 2541 : union PAC_INFO info;
328 2541 : union PAC_INFO _upn_dns_info;
329 82257 : struct PAC_UPN_DNS_INFO *upn_dns_info = NULL;
330 2541 : struct auth_user_info_dc *user_info_dc_out;
331 82257 : const struct PAC_DOMAIN_GROUP_MEMBERSHIP *resource_groups_in = NULL;
332 82257 : struct PAC_DOMAIN_GROUP_MEMBERSHIP *resource_groups_out = NULL;
333 :
334 82257 : TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
335 :
336 82257 : if (!tmp_ctx) {
337 0 : return ENOMEM;
338 : }
339 :
340 82257 : if (pac == NULL) {
341 0 : talloc_free(tmp_ctx);
342 0 : return EINVAL;
343 : }
344 :
345 82257 : ret = krb5_pac_get_buffer(context, pac, PAC_TYPE_LOGON_INFO, &k5pac_logon_info_in);
346 82257 : if (ret != 0) {
347 0 : talloc_free(tmp_ctx);
348 0 : return EINVAL;
349 : }
350 :
351 82257 : pac_logon_info_in = data_blob_const(k5pac_logon_info_in.data, k5pac_logon_info_in.length);
352 :
353 82257 : ndr_err = ndr_pull_union_blob(&pac_logon_info_in, tmp_ctx, &info,
354 : PAC_TYPE_LOGON_INFO,
355 : (ndr_pull_flags_fn_t)ndr_pull_PAC_INFO);
356 82257 : smb_krb5_free_data_contents(context, &k5pac_logon_info_in);
357 82257 : if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
358 0 : nt_status = ndr_map_error2ntstatus(ndr_err);
359 0 : DEBUG(0,("can't parse the PAC LOGON_INFO: %s\n", nt_errstr(nt_status)));
360 0 : talloc_free(tmp_ctx);
361 0 : return EINVAL;
362 : }
363 82257 : if (info.logon_info.info == NULL) {
364 0 : DEBUG(0,("can't parse the PAC LOGON_INFO: missing info pointer\n"));
365 0 : talloc_free(tmp_ctx);
366 0 : return EINVAL;
367 : }
368 :
369 82257 : ret = krb5_pac_get_buffer(context, pac, PAC_TYPE_UPN_DNS_INFO,
370 : &k5pac_upn_dns_info_in);
371 82257 : if (ret == ENOENT) {
372 2 : ZERO_STRUCT(k5pac_upn_dns_info_in);
373 2 : ret = 0;
374 : }
375 82257 : if (ret != 0) {
376 0 : talloc_free(tmp_ctx);
377 0 : return EINVAL;
378 : }
379 :
380 82257 : pac_upn_dns_info_in = data_blob_const(k5pac_upn_dns_info_in.data,
381 7973 : k5pac_upn_dns_info_in.length);
382 :
383 82257 : if (pac_upn_dns_info_in.length != 0) {
384 82255 : ndr_err = ndr_pull_union_blob(&pac_upn_dns_info_in, tmp_ctx,
385 : &_upn_dns_info,
386 : PAC_TYPE_UPN_DNS_INFO,
387 : (ndr_pull_flags_fn_t)ndr_pull_PAC_INFO);
388 82255 : smb_krb5_free_data_contents(context, &k5pac_upn_dns_info_in);
389 82255 : if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
390 0 : nt_status = ndr_map_error2ntstatus(ndr_err);
391 0 : DEBUG(0,("can't parse the PAC UPN_DNS_INFO: %s\n",
392 : nt_errstr(nt_status)));
393 0 : talloc_free(tmp_ctx);
394 0 : return EINVAL;
395 : }
396 79716 : upn_dns_info = &_upn_dns_info.upn_dns_info;
397 : }
398 :
399 : /* Pull this right into the normal auth system structures */
400 82257 : nt_status = make_user_info_dc_pac(tmp_ctx,
401 82257 : info.logon_info.info,
402 : upn_dns_info,
403 : group_inclusion,
404 : &user_info_dc_out);
405 82257 : if (!NT_STATUS_IS_OK(nt_status)) {
406 0 : DBG_ERR("make_user_info_dc_pac() failed - %s\n",
407 : nt_errstr(nt_status));
408 0 : NDR_PRINT_DEBUG(PAC_LOGON_INFO, info.logon_info.info);
409 0 : if (upn_dns_info != NULL) {
410 0 : NDR_PRINT_DEBUG(PAC_UPN_DNS_INFO, upn_dns_info);
411 : }
412 0 : talloc_free(tmp_ctx);
413 0 : return EINVAL;
414 : }
415 :
416 82257 : if (pac_srv_sig) {
417 90 : ret = krb5_pac_get_buffer(context, pac, PAC_TYPE_SRV_CHECKSUM, &k5pac_srv_checksum_in);
418 90 : if (ret != 0) {
419 0 : talloc_free(tmp_ctx);
420 0 : return ret;
421 : }
422 :
423 90 : pac_srv_checksum_in = data_blob_const(k5pac_srv_checksum_in.data, k5pac_srv_checksum_in.length);
424 :
425 90 : ndr_err = ndr_pull_struct_blob(&pac_srv_checksum_in, pac_srv_sig,
426 : pac_srv_sig,
427 : (ndr_pull_flags_fn_t)ndr_pull_PAC_SIGNATURE_DATA);
428 90 : smb_krb5_free_data_contents(context, &k5pac_srv_checksum_in);
429 90 : if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
430 0 : nt_status = ndr_map_error2ntstatus(ndr_err);
431 0 : DEBUG(0,("can't parse the server signature: %s\n",
432 : nt_errstr(nt_status)));
433 0 : return EINVAL;
434 : }
435 : }
436 :
437 82257 : if (pac_kdc_sig) {
438 90 : ret = krb5_pac_get_buffer(context, pac, PAC_TYPE_KDC_CHECKSUM, &k5pac_kdc_checksum_in);
439 90 : if (ret != 0) {
440 0 : talloc_free(tmp_ctx);
441 0 : return ret;
442 : }
443 :
444 90 : pac_kdc_checksum_in = data_blob_const(k5pac_kdc_checksum_in.data, k5pac_kdc_checksum_in.length);
445 :
446 90 : ndr_err = ndr_pull_struct_blob(&pac_kdc_checksum_in, pac_kdc_sig,
447 : pac_kdc_sig,
448 : (ndr_pull_flags_fn_t)ndr_pull_PAC_SIGNATURE_DATA);
449 90 : smb_krb5_free_data_contents(context, &k5pac_kdc_checksum_in);
450 90 : if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
451 0 : nt_status = ndr_map_error2ntstatus(ndr_err);
452 0 : DEBUG(0,("can't parse the KDC signature: %s\n",
453 : nt_errstr(nt_status)));
454 0 : return EINVAL;
455 : }
456 : }
457 :
458 : /*
459 : * Based on the presence of a REQUESTER_SID PAC buffer, ascertain
460 : * whether the ticket is a TGT. This helps the KDC and kpasswd service
461 : * ensure they do not accept tickets meant for the other.
462 : *
463 : * This heuristic will fail for older Samba versions and Windows prior
464 : * to Nov. 2021 updates, which lack support for the REQUESTER_SID PAC
465 : * buffer.
466 : */
467 82257 : ret = kerberos_pac_buffer_present(context, pac, PAC_TYPE_REQUESTER_SID);
468 82257 : if (ret == ENOENT) {
469 : /* This probably isn't a TGT. */
470 32903 : user_info_dc_out->ticket_type = TICKET_TYPE_NON_TGT;
471 49354 : } else if (ret != 0) {
472 0 : talloc_free(tmp_ctx);
473 0 : return ret;
474 : } else {
475 : /* This probably is a TGT. */
476 49354 : user_info_dc_out->ticket_type = TICKET_TYPE_TGT;
477 : }
478 :
479 : /*
480 : * If we have resource groups and the caller wants them returned, we
481 : * oblige.
482 : */
483 82257 : resource_groups_in = &info.logon_info.info->resource_groups;
484 82257 : if (resource_groups != NULL && resource_groups_in->groups.count != 0) {
485 33 : resource_groups_out = talloc(tmp_ctx, struct PAC_DOMAIN_GROUP_MEMBERSHIP);
486 33 : if (resource_groups_out == NULL) {
487 0 : talloc_free(tmp_ctx);
488 0 : return ENOMEM;
489 : }
490 :
491 33 : *resource_groups_out = (struct PAC_DOMAIN_GROUP_MEMBERSHIP) {
492 33 : .domain_sid = talloc_steal(resource_groups_out, resource_groups_in->domain_sid),
493 : .groups = {
494 33 : .count = resource_groups_in->groups.count,
495 33 : .rids = talloc_steal(resource_groups_out, resource_groups_in->groups.rids),
496 : },
497 : };
498 : }
499 :
500 82257 : *user_info_dc = talloc_steal(mem_ctx, user_info_dc_out);
501 82257 : if (resource_groups_out != NULL) {
502 33 : *resource_groups = talloc_steal(mem_ctx, resource_groups_out);
503 : }
504 :
505 79716 : return 0;
506 : }
507 :
508 :
509 32595 : NTSTATUS kerberos_pac_blob_to_user_info_dc(TALLOC_CTX *mem_ctx,
510 : DATA_BLOB pac_blob,
511 : krb5_context context,
512 : struct auth_user_info_dc **user_info_dc,
513 : struct PAC_SIGNATURE_DATA *pac_srv_sig,
514 : struct PAC_SIGNATURE_DATA *pac_kdc_sig)
515 : {
516 883 : krb5_error_code ret;
517 883 : krb5_pac pac;
518 33478 : ret = krb5_pac_parse(context,
519 32595 : pac_blob.data, pac_blob.length,
520 : &pac);
521 32595 : if (ret) {
522 0 : return map_nt_error_from_unix_common(ret);
523 : }
524 :
525 :
526 32595 : ret = kerberos_pac_to_user_info_dc(mem_ctx,
527 : pac,
528 : context,
529 : user_info_dc,
530 : AUTH_INCLUDE_RESOURCE_GROUPS,
531 : pac_srv_sig,
532 : pac_kdc_sig,
533 : NULL);
534 32595 : krb5_pac_free(context, pac);
535 32595 : if (ret) {
536 0 : return map_nt_error_from_unix_common(ret);
537 : }
538 32595 : return NT_STATUS_OK;
539 : }
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