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s4-libcli: Remove unused finddcs_nbt
[Samba.git] / source4 / kdc / kpasswdd.c
blob8bed20e518149e87445c78ad4a2de927cb8bb2bf
1 /*
2 Unix SMB/CIFS implementation.
3
4 kpasswd Server implementation
5
6 Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005
7 Copyright (C) Andrew Tridgell 2005
8
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
13
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>.
21 */
22
23 #include "includes.h"
24 #include "smbd/service_task.h"
25 #include "auth/gensec/gensec.h"
26 #include "auth/credentials/credentials.h"
27 #include "auth/auth.h"
28 #include "dsdb/samdb/samdb.h"
29 #include "../lib/util/util_ldb.h"
30 #include "libcli/security/security.h"
31 #include "param/param.h"
32 #include "kdc/kdc-glue.h"
33 #include "dsdb/common/util.h"
34
35 /* Return true if there is a valid error packet formed in the error_blob */
36 static bool kpasswdd_make_error_reply(struct kdc_server *kdc,
37 TALLOC_CTX *mem_ctx,
38 uint16_t result_code,
39 const char *error_string,
40 DATA_BLOB *error_blob)
41 {
42 char *error_string_utf8;
43 size_t len;
44
45 DEBUG(result_code ? 3 : 10, ("kpasswdd: %s\n", error_string));
46
47 if (!push_utf8_talloc(mem_ctx, &error_string_utf8, error_string, &len)) {
48 return false;
49 }
50
51 *error_blob = data_blob_talloc(mem_ctx, NULL, 2 + len + 1);
52 if (!error_blob->data) {
53 return false;
54 }
55 RSSVAL(error_blob->data, 0, result_code);
56 memcpy(error_blob->data + 2, error_string_utf8, len + 1);
57 return true;
58 }
59
60 /* Return true if there is a valid error packet formed in the error_blob */
61 static bool kpasswdd_make_unauth_error_reply(struct kdc_server *kdc,
62 TALLOC_CTX *mem_ctx,
63 uint16_t result_code,
64 const char *error_string,
65 DATA_BLOB *error_blob)
66 {
67 bool ret;
68 int kret;
69 DATA_BLOB error_bytes;
70 krb5_data k5_error_bytes, k5_error_blob;
71 ret = kpasswdd_make_error_reply(kdc, mem_ctx, result_code, error_string,
72 &error_bytes);
73 if (!ret) {
74 return false;
75 }
76 k5_error_bytes.data = error_bytes.data;
77 k5_error_bytes.length = error_bytes.length;
78 kret = krb5_mk_error(kdc->smb_krb5_context->krb5_context,
79 result_code, NULL, &k5_error_bytes,
80 NULL, NULL, NULL, NULL, &k5_error_blob);
81 if (kret) {
82 return false;
83 }
84 *error_blob = data_blob_talloc(mem_ctx, k5_error_blob.data, k5_error_blob.length);
85 krb5_data_free(&k5_error_blob);
86 if (!error_blob->data) {
87 return false;
88 }
89 return true;
90 }
91
92 static bool kpasswd_make_pwchange_reply(struct kdc_server *kdc,
93 TALLOC_CTX *mem_ctx,
94 NTSTATUS status,
95 enum samPwdChangeReason reject_reason,
96 struct samr_DomInfo1 *dominfo,
97 DATA_BLOB *error_blob)
98 {
99 if (NT_STATUS_EQUAL(status, NT_STATUS_NO_SUCH_USER)) {
100 return kpasswdd_make_error_reply(kdc, mem_ctx,
101 KRB5_KPASSWD_ACCESSDENIED,
102 "No such user when changing password",
103 error_blob);
104 }
105 if (NT_STATUS_EQUAL(status, NT_STATUS_ACCESS_DENIED)) {
106 return kpasswdd_make_error_reply(kdc, mem_ctx,
107 KRB5_KPASSWD_ACCESSDENIED,
108 "Not permitted to change password",
109 error_blob);
110 }
111 if (dominfo && NT_STATUS_EQUAL(status, NT_STATUS_PASSWORD_RESTRICTION)) {
112 const char *reject_string;
113 switch (reject_reason) {
114 case SAM_PWD_CHANGE_PASSWORD_TOO_SHORT:
115 reject_string = talloc_asprintf(mem_ctx, "Password too short, password must be at least %d characters long",
116 dominfo->min_password_length);
117 break;
118 case SAM_PWD_CHANGE_NOT_COMPLEX:
119 reject_string = "Password does not meet complexity requirements";
120 break;
121 case SAM_PWD_CHANGE_PWD_IN_HISTORY:
122 reject_string = "Password is already in password history";
123 break;
124 default:
125 reject_string = talloc_asprintf(mem_ctx, "Password must be at least %d characters long, and cannot match any of your %d previous passwords",
126 dominfo->min_password_length, dominfo->password_history_length);
127 break;
128 }
129 return kpasswdd_make_error_reply(kdc, mem_ctx,
130 KRB5_KPASSWD_SOFTERROR,
131 reject_string,
132 error_blob);
133 }
134 if (!NT_STATUS_IS_OK(status)) {
135 return kpasswdd_make_error_reply(kdc, mem_ctx,
136 KRB5_KPASSWD_HARDERROR,
137 talloc_asprintf(mem_ctx, "failed to set password: %s", nt_errstr(status)),
138 error_blob);
139
140 }
141 return kpasswdd_make_error_reply(kdc, mem_ctx, KRB5_KPASSWD_SUCCESS,
142 "Password changed",
143 error_blob);
144 }
145
146 /*
147 A user password change
148
149 Return true if there is a valid error packet (or success) formed in
150 the error_blob
151 */
152 static bool kpasswdd_change_password(struct kdc_server *kdc,
153 TALLOC_CTX *mem_ctx,
154 struct auth_session_info *session_info,
155 const DATA_BLOB *password,
156 DATA_BLOB *reply)
157 {
158 NTSTATUS status;
159 enum samPwdChangeReason reject_reason;
160 struct samr_DomInfo1 *dominfo;
161 struct samr_Password *oldLmHash, *oldNtHash;
162 struct ldb_context *samdb;
163 const char * const attrs[] = { "dBCSPwd", "unicodePwd", NULL };
164 struct ldb_message *msg;
165 int ret;
166
167 /* Fetch the old hashes to get the old password in order to perform
168 * the password change operation. Naturally it would be much better to
169 * have a password hash from an authentication around but this doesn't
170 * seem to be the case here. */
171 ret = dsdb_search_one(kdc->samdb, mem_ctx, &msg, ldb_get_default_basedn(kdc->samdb),
172 LDB_SCOPE_SUBTREE,
173 attrs,
174 DSDB_SEARCH_NO_GLOBAL_CATALOG,
175 "(&(objectClass=user)(sAMAccountName=%s))",
176 session_info->info->account_name);
177 if (ret != LDB_SUCCESS) {
178 return kpasswdd_make_error_reply(kdc, mem_ctx,
179 KRB5_KPASSWD_ACCESSDENIED,
180 "No such user when changing password",
181 reply);
182 }
183
184 status = samdb_result_passwords(mem_ctx, kdc->task->lp_ctx, msg,
185 &oldLmHash, &oldNtHash);
186 if (!NT_STATUS_IS_OK(status)) {
187 return kpasswdd_make_error_reply(kdc, mem_ctx,
188 KRB5_KPASSWD_ACCESSDENIED,
189 "Not permitted to change password",
190 reply);
191 }
192
193 /* Start a SAM with user privileges for the password change */
194 samdb = samdb_connect(mem_ctx, kdc->task->event_ctx, kdc->task->lp_ctx,
195 session_info, 0);
196 if (!samdb) {
197 return kpasswdd_make_error_reply(kdc, mem_ctx,
198 KRB5_KPASSWD_HARDERROR,
199 "Failed to open samdb",
200 reply);
201 }
202
203 DEBUG(3, ("Changing password of %s\\%s (%s)\n",
204 session_info->info->domain_name,
205 session_info->info->account_name,
206 dom_sid_string(mem_ctx, &session_info->security_token->sids[PRIMARY_USER_SID_INDEX])));
207
208 /* Performs the password change */
209 status = samdb_set_password_sid(samdb, mem_ctx,
210 &session_info->security_token->sids[PRIMARY_USER_SID_INDEX],
211 password, NULL, NULL,
212 oldLmHash, oldNtHash, /* this is a user password change */
213 &reject_reason,
214 &dominfo);
215 return kpasswd_make_pwchange_reply(kdc, mem_ctx,
216 status,
217 reject_reason,
218 dominfo,
219 reply);
220
221 }
222
223 static bool kpasswd_process_request(struct kdc_server *kdc,
224 TALLOC_CTX *mem_ctx,
225 struct gensec_security *gensec_security,
226 uint16_t version,
227 DATA_BLOB *input,
228 DATA_BLOB *reply)
229 {
230 struct auth_session_info *session_info;
231 size_t pw_len;
232
233 if (!NT_STATUS_IS_OK(gensec_session_info(gensec_security,
234 mem_ctx,
235 &session_info))) {
236 return kpasswdd_make_error_reply(kdc, mem_ctx,
237 KRB5_KPASSWD_HARDERROR,
238 "gensec_session_info failed!",
239 reply);
240 }
241
242 switch (version) {
243 case KRB5_KPASSWD_VERS_CHANGEPW:
244 {
245 DATA_BLOB password;
246 if (!convert_string_talloc_handle(mem_ctx, lpcfg_iconv_handle(kdc->task->lp_ctx),
247 CH_UTF8, CH_UTF16,
248 (const char *)input->data,
249 input->length,
250 (void **)&password.data, &pw_len)) {
251 return false;
252 }
253 password.length = pw_len;
254
255 return kpasswdd_change_password(kdc, mem_ctx, session_info,
256 &password, reply);
257 }
258 case KRB5_KPASSWD_VERS_SETPW:
259 {
260 NTSTATUS status;
261 enum samPwdChangeReason reject_reason = SAM_PWD_CHANGE_NO_ERROR;
262 struct samr_DomInfo1 *dominfo = NULL;
263 struct ldb_context *samdb;
264 krb5_context context = kdc->smb_krb5_context->krb5_context;
265
266 ChangePasswdDataMS chpw;
267 DATA_BLOB password;
268
269 krb5_principal principal;
270 char *set_password_on_princ;
271 struct ldb_dn *set_password_on_dn;
272 bool service_principal_name = false;
273
274 size_t len;
275 int ret;
276
277 ret = decode_ChangePasswdDataMS(input->data, input->length,
278 &chpw, &len);
279 if (ret) {
280 return kpasswdd_make_error_reply(kdc, mem_ctx,
281 KRB5_KPASSWD_MALFORMED,
282 "failed to decode password change structure",
283 reply);
284 }
285
286 if (!convert_string_talloc_handle(mem_ctx, lpcfg_iconv_handle(kdc->task->lp_ctx),
287 CH_UTF8, CH_UTF16,
288 (const char *)chpw.newpasswd.data,
289 chpw.newpasswd.length,
290 (void **)&password.data, &pw_len)) {
291 free_ChangePasswdDataMS(&chpw);
292 return false;
293 }
294
295 password.length = pw_len;
296
297 if ((chpw.targname && !chpw.targrealm)
298 || (!chpw.targname && chpw.targrealm)) {
299 free_ChangePasswdDataMS(&chpw);
300 return kpasswdd_make_error_reply(kdc, mem_ctx,
301 KRB5_KPASSWD_MALFORMED,
302 "Realm and principal must be both present, or neither present",
303 reply);
304 }
305 if (chpw.targname && chpw.targrealm) {
306 ret = krb5_build_principal_ext(kdc->smb_krb5_context->krb5_context,
307 &principal,
308 strlen(*chpw.targrealm),
309 *chpw.targrealm, 0);
310 if (ret) {
311 free_ChangePasswdDataMS(&chpw);
312 return kpasswdd_make_error_reply(kdc, mem_ctx,
313 KRB5_KPASSWD_MALFORMED,
314 "failed to get principal",
315 reply);
316 }
317 if (copy_PrincipalName(chpw.targname, &principal->name)) {
318 free_ChangePasswdDataMS(&chpw);
319 krb5_free_principal(context, principal);
320 return kpasswdd_make_error_reply(kdc, mem_ctx,
321 KRB5_KPASSWD_MALFORMED,
322 "failed to extract principal to set",
323 reply);
324 }
325 } else {
326 free_ChangePasswdDataMS(&chpw);
327 return kpasswdd_change_password(kdc, mem_ctx, session_info,
328 &password, reply);
329 }
330 free_ChangePasswdDataMS(&chpw);
331
332 if (principal->name.name_string.len >= 2) {
333 service_principal_name = true;
334
335 /* We use this, rather than 'no realm' flag,
336 * as we don't want to accept a password
337 * change on a principal from another realm */
338
339 if (krb5_unparse_name_short(context, principal, &set_password_on_princ) != 0) {
340 krb5_free_principal(context, principal);
341 return kpasswdd_make_error_reply(kdc, mem_ctx,
342 KRB5_KPASSWD_MALFORMED,
343 "krb5_unparse_name failed!",
344 reply);
345 }
346 } else {
347 if (krb5_unparse_name(context, principal, &set_password_on_princ) != 0) {
348 krb5_free_principal(context, principal);
349 return kpasswdd_make_error_reply(kdc, mem_ctx,
350 KRB5_KPASSWD_MALFORMED,
351 "krb5_unparse_name failed!",
352 reply);
353 }
354 }
355 krb5_free_principal(context, principal);
356
357 samdb = samdb_connect(mem_ctx, kdc->task->event_ctx, kdc->task->lp_ctx, session_info, 0);
358 if (!samdb) {
359 free(set_password_on_princ);
360 return kpasswdd_make_error_reply(kdc, mem_ctx,
361 KRB5_KPASSWD_HARDERROR,
362 "Unable to open database!",
363 reply);
364 }
365
366 DEBUG(3, ("%s\\%s (%s) is changing password of %s\n",
367 session_info->info->domain_name,
368 session_info->info->account_name,
369 dom_sid_string(mem_ctx, &session_info->security_token->sids[PRIMARY_USER_SID_INDEX]),
370 set_password_on_princ));
371 ret = ldb_transaction_start(samdb);
372 if (ret != LDB_SUCCESS) {
373 free(set_password_on_princ);
374 status = NT_STATUS_TRANSACTION_ABORTED;
375 return kpasswd_make_pwchange_reply(kdc, mem_ctx,
376 status,
377 SAM_PWD_CHANGE_NO_ERROR,
378 NULL,
379 reply);
380 }
381
382 if (service_principal_name) {
383 status = crack_service_principal_name(samdb, mem_ctx,
384 set_password_on_princ,
385 &set_password_on_dn, NULL);
386 } else {
387 status = crack_user_principal_name(samdb, mem_ctx,
388 set_password_on_princ,
389 &set_password_on_dn, NULL);
390 }
391 free(set_password_on_princ);
392 if (!NT_STATUS_IS_OK(status)) {
393 ldb_transaction_cancel(samdb);
394 return kpasswd_make_pwchange_reply(kdc, mem_ctx,
395 status,
396 SAM_PWD_CHANGE_NO_ERROR,
397 NULL,
398 reply);
399 }
400
401 if (NT_STATUS_IS_OK(status)) {
402 /* Admin password set */
403 status = samdb_set_password(samdb, mem_ctx,
404 set_password_on_dn, NULL,
405 &password, NULL, NULL,
406 NULL, NULL, /* this is not a user password change */
407 &reject_reason, &dominfo);
408 }
409
410 if (NT_STATUS_IS_OK(status)) {
411 ret = ldb_transaction_commit(samdb);
412 if (ret != LDB_SUCCESS) {
413 DEBUG(1,("Failed to commit transaction to set password on %s: %s\n",
414 ldb_dn_get_linearized(set_password_on_dn),
415 ldb_errstring(samdb)));
416 status = NT_STATUS_TRANSACTION_ABORTED;
417 }
418 } else {
419 ldb_transaction_cancel(samdb);
420 }
421 return kpasswd_make_pwchange_reply(kdc, mem_ctx,
422 status,
423 reject_reason,
424 dominfo,
425 reply);
426 }
427 default:
428 return kpasswdd_make_error_reply(kdc, mem_ctx,
429 KRB5_KPASSWD_BAD_VERSION,
430 talloc_asprintf(mem_ctx,
431 "Protocol version %u not supported",
432 version),
433 reply);
434 }
435 }
436
437 enum kdc_process_ret kpasswdd_process(struct kdc_server *kdc,
438 TALLOC_CTX *mem_ctx,
439 DATA_BLOB *input,
440 DATA_BLOB *reply,
441 struct tsocket_address *peer_addr,
442 struct tsocket_address *my_addr,
443 int datagram_reply)
444 {
445 bool ret;
446 const uint16_t header_len = 6;
447 uint16_t len;
448 uint16_t ap_req_len;
449 uint16_t krb_priv_len;
450 uint16_t version;
451 NTSTATUS nt_status;
452 DATA_BLOB ap_req, krb_priv_req;
453 DATA_BLOB krb_priv_rep = data_blob(NULL, 0);
454 DATA_BLOB ap_rep = data_blob(NULL, 0);
455 DATA_BLOB kpasswd_req, kpasswd_rep;
456 struct cli_credentials *server_credentials;
457 struct gensec_security *gensec_security;
458 TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
459
460 char *keytab_name;
461
462 if (!tmp_ctx) {
463 return KDC_PROCESS_FAILED;
464 }
465
466 if (kdc->am_rodc) {
467 talloc_free(tmp_ctx);
468 return KDC_PROCESS_PROXY;
469 }
470
471 /* Be parinoid. We need to ensure we don't just let the
472 * caller lead us into a buffer overflow */
473 if (input->length <= header_len) {
474 talloc_free(tmp_ctx);
475 return KDC_PROCESS_FAILED;
476 }
477
478 len = RSVAL(input->data, 0);
479 if (input->length != len) {
480 talloc_free(tmp_ctx);
481 return KDC_PROCESS_FAILED;
482 }
483
484 /* There are two different versions of this protocol so far,
485 * plus others in the standards pipe. Fortunetly they all
486 * take a very similar framing */
487 version = RSVAL(input->data, 2);
488 ap_req_len = RSVAL(input->data, 4);
489 if ((ap_req_len >= len) || (ap_req_len + header_len) >= len) {
490 talloc_free(tmp_ctx);
491 return KDC_PROCESS_FAILED;
492 }
493
494 krb_priv_len = len - ap_req_len;
495 ap_req = data_blob_const(&input->data[header_len], ap_req_len);
496 krb_priv_req = data_blob_const(&input->data[header_len + ap_req_len], krb_priv_len);
497
498 server_credentials = cli_credentials_init(tmp_ctx);
499 if (!server_credentials) {
500 DEBUG(1, ("Failed to init server credentials\n"));
501 talloc_free(tmp_ctx);
502 return KDC_PROCESS_FAILED;
503 }
504
505 /* We want the credentials subsystem to use the krb5 context
506 * we already have, rather than a new context */
507 cli_credentials_set_krb5_context(server_credentials, kdc->smb_krb5_context);
508 cli_credentials_set_conf(server_credentials, kdc->task->lp_ctx);
509
510 keytab_name = talloc_asprintf(server_credentials, "HDB:samba4&%p", kdc->base_ctx);
511
512 cli_credentials_set_username(server_credentials, "kadmin/changepw", CRED_SPECIFIED);
513 ret = cli_credentials_set_keytab_name(server_credentials, kdc->task->lp_ctx, keytab_name, CRED_SPECIFIED);
514 if (ret != 0) {
515 ret = kpasswdd_make_unauth_error_reply(kdc, mem_ctx,
516 KRB5_KPASSWD_HARDERROR,
517 talloc_asprintf(mem_ctx,
518 "Failed to obtain server credentials for kadmin/changepw!"),
519 &krb_priv_rep);
520 ap_rep.length = 0;
521 if (ret) {
522 goto reply;
523 }
524 talloc_free(tmp_ctx);
525 return ret;
526 }
527
528 /* We don't strictly need to call this wrapper, and could call
529 * gensec_server_start directly, as we have no need for NTLM
530 * and we have a PAC, but this ensures that the wrapper can be
531 * safely extended for other helpful things in future */
532 nt_status = samba_server_gensec_start(tmp_ctx, kdc->task->event_ctx,
533 kdc->task->msg_ctx,
534 kdc->task->lp_ctx,
535 server_credentials,
536 "kpasswd",
537 &gensec_security);
538 if (!NT_STATUS_IS_OK(nt_status)) {
539 talloc_free(tmp_ctx);
540 return KDC_PROCESS_FAILED;
541 }
542
543 /* The kerberos PRIV packets include these addresses. MIT
544 * clients check that they are present */
545 #if 0
546 /* Skip this part for now, it breaks with a NetAPP filer and
547 * in any case where the client address is behind NAT. If
548 * older MIT clients need this, we might have to insert more
549 * complex code */
550
551 nt_status = gensec_set_local_address(gensec_security, peer_addr);
552 if (!NT_STATUS_IS_OK(nt_status)) {
553 talloc_free(tmp_ctx);
554 return KDC_PROCESS_FAILED;
555 }
556 #endif
557
558 nt_status = gensec_set_local_address(gensec_security, my_addr);
559 if (!NT_STATUS_IS_OK(nt_status)) {
560 talloc_free(tmp_ctx);
561 return KDC_PROCESS_FAILED;
562 }
563
564 /* We want the GENSEC wrap calls to generate PRIV tokens */
565 gensec_want_feature(gensec_security, GENSEC_FEATURE_SEAL);
566
567 nt_status = gensec_start_mech_by_name(gensec_security, "krb5");
568 if (!NT_STATUS_IS_OK(nt_status)) {
569 talloc_free(tmp_ctx);
570 return KDC_PROCESS_FAILED;
571 }
572
573 /* Accept the AP-REQ and generate teh AP-REP we need for the reply */
574 nt_status = gensec_update(gensec_security, tmp_ctx, kdc->task->event_ctx, ap_req, &ap_rep);
575 if (!NT_STATUS_IS_OK(nt_status) && !NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
576
577 ret = kpasswdd_make_unauth_error_reply(kdc, mem_ctx,
578 KRB5_KPASSWD_HARDERROR,
579 talloc_asprintf(mem_ctx,
580 "gensec_update failed: %s",
581 nt_errstr(nt_status)),
582 &krb_priv_rep);
583 ap_rep.length = 0;
584 if (ret) {
585 goto reply;
586 }
587 talloc_free(tmp_ctx);
588 return KDC_PROCESS_FAILED;
589 }
590
591 /* Extract the data from the KRB-PRIV half of the message */
592 nt_status = gensec_unwrap(gensec_security, tmp_ctx, &krb_priv_req, &kpasswd_req);
593 if (!NT_STATUS_IS_OK(nt_status)) {
594 ret = kpasswdd_make_unauth_error_reply(kdc, mem_ctx,
595 KRB5_KPASSWD_HARDERROR,
596 talloc_asprintf(mem_ctx,
597 "gensec_unwrap failed: %s",
598 nt_errstr(nt_status)),
599 &krb_priv_rep);
600 ap_rep.length = 0;
601 if (ret) {
602 goto reply;
603 }
604 talloc_free(tmp_ctx);
605 return KDC_PROCESS_FAILED;
606 }
607
608 /* Figure out something to do with it (probably changing a password...) */
609 ret = kpasswd_process_request(kdc, tmp_ctx,
610 gensec_security,
611 version,
612 &kpasswd_req, &kpasswd_rep);
613 if (!ret) {
614 /* Argh! */
615 talloc_free(tmp_ctx);
616 return KDC_PROCESS_FAILED;
617 }
618
619 /* And wrap up the reply: This ensures that the error message
620 * or success can be verified by the client */
621 nt_status = gensec_wrap(gensec_security, tmp_ctx,
622 &kpasswd_rep, &krb_priv_rep);
623 if (!NT_STATUS_IS_OK(nt_status)) {
624 ret = kpasswdd_make_unauth_error_reply(kdc, mem_ctx,
625 KRB5_KPASSWD_HARDERROR,
626 talloc_asprintf(mem_ctx,
627 "gensec_wrap failed: %s",
628 nt_errstr(nt_status)),
629 &krb_priv_rep);
630 ap_rep.length = 0;
631 if (ret) {
632 goto reply;
633 }
634 talloc_free(tmp_ctx);
635 return KDC_PROCESS_FAILED;
636 }
637
638 reply:
639 *reply = data_blob_talloc(mem_ctx, NULL, krb_priv_rep.length + ap_rep.length + header_len);
640 if (!reply->data) {
641 talloc_free(tmp_ctx);
642 return KDC_PROCESS_FAILED;
643 }
644
645 RSSVAL(reply->data, 0, reply->length);
646 RSSVAL(reply->data, 2, 1); /* This is a version 1 reply, MS change/set or otherwise */
647 RSSVAL(reply->data, 4, ap_rep.length);
648 memcpy(reply->data + header_len,
649 ap_rep.data,
650 ap_rep.length);
651 memcpy(reply->data + header_len + ap_rep.length,
652 krb_priv_rep.data,
653 krb_priv_rep.length);
654
655 talloc_free(tmp_ctx);
656 return KDC_PROCESS_OK;
657 }
658
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