source: branches/samba-3.5.x/source4/dsdb/samdb/cracknames.c

Last change on this file was 414, checked in by Herwig Bauernfeind, 16 years ago

Samba 3.5.0: Initial import
File size: 39.7 KB
Line 
1/*
2 Unix SMB/CIFS implementation.
3
4 endpoint server for the drsuapi pipe
5 DsCrackNames()
6
7 Copyright (C) Stefan Metzmacher 2004
8 Copyright (C) Andrew Bartlett <abartlet@samba.org> 2004-2005
9
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
14
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
19
20 You should have received a copy of the GNU General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>.
22*/
23
24#include "includes.h"
25#include "librpc/gen_ndr/drsuapi.h"
26#include "rpc_server/common/common.h"
27#include "lib/events/events.h"
28#include "lib/ldb/include/ldb.h"
29#include "lib/ldb/include/ldb_errors.h"
30#include "system/kerberos.h"
31#include "auth/kerberos/kerberos.h"
32#include "libcli/ldap/ldap_ndr.h"
33#include "libcli/security/security.h"
34#include "librpc/gen_ndr/ndr_misc.h"
35#include "auth/auth.h"
36#include "../lib/util/util_ldb.h"
37#include "dsdb/samdb/samdb.h"
38#include "param/param.h"
39
40static WERROR DsCrackNameOneFilter(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
41 struct smb_krb5_context *smb_krb5_context,
42 uint32_t format_flags, uint32_t format_offered, uint32_t format_desired,
43 struct ldb_dn *name_dn, const char *name,
44 const char *domain_filter, const char *result_filter,
45 struct drsuapi_DsNameInfo1 *info1);
46static WERROR DsCrackNameOneSyntactical(TALLOC_CTX *mem_ctx,
47 uint32_t format_offered, uint32_t format_desired,
48 struct ldb_dn *name_dn, const char *name,
49 struct drsuapi_DsNameInfo1 *info1);
50
51static WERROR dns_domain_from_principal(TALLOC_CTX *mem_ctx, struct smb_krb5_context *smb_krb5_context,
52 const char *name,
53 struct drsuapi_DsNameInfo1 *info1)
54{
55 krb5_error_code ret;
56 krb5_principal principal;
57 /* perhaps it's a principal with a realm, so return the right 'domain only' response */
58 char *realm;
59 ret = krb5_parse_name_flags(smb_krb5_context->krb5_context, name,
60 KRB5_PRINCIPAL_PARSE_REQUIRE_REALM, &principal);
61 if (ret) {
62 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
63 return WERR_OK;
64 }
65
66 /* This isn't an allocation assignemnt, so it is free'ed with the krb5_free_principal */
67 realm = krb5_principal_get_realm(smb_krb5_context->krb5_context, principal);
68
69 info1->dns_domain_name = talloc_strdup(mem_ctx, realm);
70 krb5_free_principal(smb_krb5_context->krb5_context, principal);
71
72 W_ERROR_HAVE_NO_MEMORY(info1->dns_domain_name);
73
74 info1->status = DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY;
75 return WERR_OK;
76}
77
78static enum drsuapi_DsNameStatus LDB_lookup_spn_alias(krb5_context context, struct ldb_context *ldb_ctx,
79 TALLOC_CTX *mem_ctx,
80 const char *alias_from,
81 char **alias_to)
82{
83 int i;
84 int ret;
85 struct ldb_result *res;
86 struct ldb_message_element *spnmappings;
87 TALLOC_CTX *tmp_ctx;
88 struct ldb_dn *service_dn;
89 char *service_dn_str;
90
91 const char *directory_attrs[] = {
92 "sPNMappings",
93 NULL
94 };
95
96 tmp_ctx = talloc_new(mem_ctx);
97 if (!tmp_ctx) {
98 return DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
99 }
100
101 service_dn = ldb_dn_new(tmp_ctx, ldb_ctx, "CN=Directory Service,CN=Windows NT,CN=Services");
102 if ( ! ldb_dn_add_base(service_dn, samdb_config_dn(ldb_ctx))) {
103 return DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
104 }
105 service_dn_str = ldb_dn_alloc_linearized(tmp_ctx, service_dn);
106 if ( ! service_dn_str) {
107 return DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
108 }
109
110 ret = ldb_search(ldb_ctx, tmp_ctx, &res, service_dn, LDB_SCOPE_BASE,
111 directory_attrs, "(objectClass=nTDSService)");
112
113 if (ret != LDB_SUCCESS && ret != LDB_ERR_NO_SUCH_OBJECT) {
114 DEBUG(1, ("ldb_search: dn: %s not found: %s", service_dn_str, ldb_errstring(ldb_ctx)));
115 return DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
116 } else if (ret == LDB_ERR_NO_SUCH_OBJECT) {
117 DEBUG(1, ("ldb_search: dn: %s not found", service_dn_str));
118 return DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
119 } else if (res->count != 1) {
120 talloc_free(res);
121 DEBUG(1, ("ldb_search: dn: %s not found", service_dn_str));
122 return DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
123 }
124
125 spnmappings = ldb_msg_find_element(res->msgs[0], "sPNMappings");
126 if (!spnmappings || spnmappings->num_values == 0) {
127 DEBUG(1, ("ldb_search: dn: %s no sPNMappings attribute", service_dn_str));
128 talloc_free(tmp_ctx);
129 return DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
130 }
131
132 for (i = 0; i < spnmappings->num_values; i++) {
133 char *mapping, *p, *str;
134 mapping = talloc_strdup(tmp_ctx,
135 (const char *)spnmappings->values[i].data);
136 if (!mapping) {
137 DEBUG(1, ("LDB_lookup_spn_alias: ldb_search: dn: %s did not have an sPNMapping\n", service_dn_str));
138 talloc_free(tmp_ctx);
139 return DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
140 }
141
142 /* C string manipulation sucks */
143
144 p = strchr(mapping, '=');
145 if (!p) {
146 DEBUG(1, ("ldb_search: dn: %s sPNMapping malformed: %s\n",
147 service_dn_str, mapping));
148 talloc_free(tmp_ctx);
149 return DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
150 }
151 p[0] = '\0';
152 p++;
153 do {
154 str = p;
155 p = strchr(p, ',');
156 if (p) {
157 p[0] = '\0';
158 p++;
159 }
160 if (strcasecmp(str, alias_from) == 0) {
161 *alias_to = mapping;
162 talloc_steal(mem_ctx, mapping);
163 talloc_free(tmp_ctx);
164 return DRSUAPI_DS_NAME_STATUS_OK;
165 }
166 } while (p);
167 }
168 DEBUG(4, ("LDB_lookup_spn_alias: no alias for service %s applicable\n", alias_from));
169 talloc_free(tmp_ctx);
170 return DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
171}
172
173/* When cracking a ServicePrincipalName, many services may be served
174 * by the host/ servicePrincipalName. The incoming query is for cifs/
175 * but we translate it here, and search on host/. This is done after
176 * the cifs/ entry has been searched for, making this a fallback */
177
178static WERROR DsCrackNameSPNAlias(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
179 struct smb_krb5_context *smb_krb5_context,
180 uint32_t format_flags, uint32_t format_offered, uint32_t format_desired,
181 const char *name, struct drsuapi_DsNameInfo1 *info1)
182{
183 WERROR wret;
184 krb5_error_code ret;
185 krb5_principal principal;
186 const char *service, *dns_name;
187 char *new_service;
188 char *new_princ;
189 enum drsuapi_DsNameStatus namestatus;
190
191 /* parse principal */
192 ret = krb5_parse_name_flags(smb_krb5_context->krb5_context,
193 name, KRB5_PRINCIPAL_PARSE_NO_REALM, &principal);
194 if (ret) {
195 DEBUG(2, ("Could not parse principal: %s: %s",
196 name, smb_get_krb5_error_message(smb_krb5_context->krb5_context,
197 ret, mem_ctx)));
198 return WERR_NOMEM;
199 }
200
201 /* grab cifs/, http/ etc */
202
203 /* This is checked for in callers, but be safe */
204 if (principal->name.name_string.len < 2) {
205 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
206 return WERR_OK;
207 }
208 service = principal->name.name_string.val[0];
209 dns_name = principal->name.name_string.val[1];
210
211 /* MAP it */
212 namestatus = LDB_lookup_spn_alias(smb_krb5_context->krb5_context,
213 sam_ctx, mem_ctx,
214 service, &new_service);
215
216 if (namestatus == DRSUAPI_DS_NAME_STATUS_NOT_FOUND) {
217 info1->status = DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY;
218 info1->dns_domain_name = talloc_strdup(mem_ctx, dns_name);
219 if (!info1->dns_domain_name) {
220 krb5_free_principal(smb_krb5_context->krb5_context, principal);
221 return WERR_NOMEM;
222 }
223 return WERR_OK;
224 } else if (namestatus != DRSUAPI_DS_NAME_STATUS_OK) {
225 info1->status = namestatus;
226 krb5_free_principal(smb_krb5_context->krb5_context, principal);
227 return WERR_OK;
228 }
229
230 /* ooh, very nasty playing around in the Principal... */
231 free(principal->name.name_string.val[0]);
232 principal->name.name_string.val[0] = strdup(new_service);
233 if (!principal->name.name_string.val[0]) {
234 krb5_free_principal(smb_krb5_context->krb5_context, principal);
235 return WERR_NOMEM;
236 }
237
238 /* reform principal */
239 ret = krb5_unparse_name_flags(smb_krb5_context->krb5_context, principal,
240 KRB5_PRINCIPAL_UNPARSE_NO_REALM, &new_princ);
241
242 if (ret) {
243 krb5_free_principal(smb_krb5_context->krb5_context, principal);
244 return WERR_NOMEM;
245 }
246
247 wret = DsCrackNameOneName(sam_ctx, mem_ctx, format_flags, format_offered, format_desired,
248 new_princ, info1);
249 free(new_princ);
250 if (W_ERROR_IS_OK(wret) && (info1->status == DRSUAPI_DS_NAME_STATUS_NOT_FOUND)) {
251 info1->status = DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY;
252 info1->dns_domain_name = talloc_strdup(mem_ctx, dns_name);
253 if (!info1->dns_domain_name) {
254 wret = WERR_NOMEM;
255 }
256 }
257 krb5_free_principal(smb_krb5_context->krb5_context, principal);
258 return wret;
259}
260
261/* Subcase of CrackNames, for the userPrincipalName */
262
263static WERROR DsCrackNameUPN(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
264 struct smb_krb5_context *smb_krb5_context,
265 uint32_t format_flags, uint32_t format_offered, uint32_t format_desired,
266 const char *name, struct drsuapi_DsNameInfo1 *info1)
267{
268 int ldb_ret;
269 WERROR status;
270 const char *domain_filter = NULL;
271 const char *result_filter = NULL;
272 krb5_error_code ret;
273 krb5_principal principal;
274 char *realm;
275 char *unparsed_name_short;
276 const char *domain_attrs[] = { NULL };
277 struct ldb_result *domain_res = NULL;
278
279 /* Prevent recursion */
280 if (!name) {
281 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
282 return WERR_OK;
283 }
284
285 ret = krb5_parse_name_flags(smb_krb5_context->krb5_context, name,
286 KRB5_PRINCIPAL_PARSE_REQUIRE_REALM, &principal);
287 if (ret) {
288 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
289 return WERR_OK;
290 }
291
292 realm = krb5_principal_get_realm(smb_krb5_context->krb5_context, principal);
293
294 ldb_ret = ldb_search(sam_ctx, mem_ctx, &domain_res,
295 samdb_partitions_dn(sam_ctx, mem_ctx),
296 LDB_SCOPE_ONELEVEL,
297 domain_attrs,
298 "(&(&(|(&(dnsRoot=%s)(nETBIOSName=*))(nETBIOSName=%s))(objectclass=crossRef))(ncName=*))",
299 ldb_binary_encode_string(mem_ctx, realm),
300 ldb_binary_encode_string(mem_ctx, realm));
301
302 if (ldb_ret != LDB_SUCCESS) {
303 DEBUG(2, ("DsCrackNameUPN domain ref search failed: %s", ldb_errstring(sam_ctx)));
304 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
305 return WERR_OK;
306 }
307
308 switch (domain_res->count) {
309 case 1:
310 break;
311 case 0:
312 return dns_domain_from_principal(mem_ctx, smb_krb5_context,
313 name, info1);
314 default:
315 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
316 return WERR_OK;
317 }
318
319 ret = krb5_unparse_name_flags(smb_krb5_context->krb5_context, principal,
320 KRB5_PRINCIPAL_UNPARSE_NO_REALM, &unparsed_name_short);
321 krb5_free_principal(smb_krb5_context->krb5_context, principal);
322
323 if (ret) {
324 free(unparsed_name_short);
325 return WERR_NOMEM;
326 }
327
328 /* This may need to be extended for more userPrincipalName variations */
329 result_filter = talloc_asprintf(mem_ctx, "(&(objectClass=user)(samAccountName=%s))",
330 ldb_binary_encode_string(mem_ctx, unparsed_name_short));
331
332 domain_filter = talloc_asprintf(mem_ctx, "(distinguishedName=%s)", ldb_dn_get_linearized(domain_res->msgs[0]->dn));
333
334 if (!result_filter || !domain_filter) {
335 free(unparsed_name_short);
336 return WERR_NOMEM;
337 }
338 status = DsCrackNameOneFilter(sam_ctx, mem_ctx,
339 smb_krb5_context,
340 format_flags, format_offered, format_desired,
341 NULL, unparsed_name_short, domain_filter, result_filter,
342 info1);
343 free(unparsed_name_short);
344
345 return status;
346}
347
348/* Crack a single 'name', from format_offered into format_desired, returning the result in info1 */
349
350WERROR DsCrackNameOneName(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
351 uint32_t format_flags, uint32_t format_offered, uint32_t format_desired,
352 const char *name, struct drsuapi_DsNameInfo1 *info1)
353{
354 krb5_error_code ret;
355 const char *domain_filter = NULL;
356 const char *result_filter = NULL;
357 struct ldb_dn *name_dn = NULL;
358
359 struct smb_krb5_context *smb_krb5_context = NULL;
360
361 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
362 info1->dns_domain_name = NULL;
363 info1->result_name = NULL;
364
365 if (!name) {
366 return WERR_INVALID_PARAM;
367 }
368
369 /* TODO: - fill the correct names in all cases!
370 * - handle format_flags
371 */
372
373 /* here we need to set the domain_filter and/or the result_filter */
374 switch (format_offered) {
375 case DRSUAPI_DS_NAME_FORMAT_UNKNOWN:
376 {
377 int i;
378 enum drsuapi_DsNameFormat formats[] = {
379 DRSUAPI_DS_NAME_FORMAT_FQDN_1779, DRSUAPI_DS_NAME_FORMAT_USER_PRINCIPAL,
380 DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT, DRSUAPI_DS_NAME_FORMAT_CANONICAL,
381 DRSUAPI_DS_NAME_FORMAT_GUID, DRSUAPI_DS_NAME_FORMAT_DISPLAY,
382 DRSUAPI_DS_NAME_FORMAT_SERVICE_PRINCIPAL,
383 DRSUAPI_DS_NAME_FORMAT_SID_OR_SID_HISTORY,
384 DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX
385 };
386 WERROR werr;
387 for (i=0; i < ARRAY_SIZE(formats); i++) {
388 werr = DsCrackNameOneName(sam_ctx, mem_ctx, format_flags, formats[i], format_desired, name, info1);
389 if (!W_ERROR_IS_OK(werr)) {
390 return werr;
391 }
392 if (info1->status != DRSUAPI_DS_NAME_STATUS_NOT_FOUND) {
393 return werr;
394 }
395 }
396 return werr;
397 }
398
399 case DRSUAPI_DS_NAME_FORMAT_CANONICAL:
400 case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX:
401 {
402 char *str, *s, *account;
403
404 if (strlen(name) == 0) {
405 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
406 return WERR_OK;
407 }
408
409 str = talloc_strdup(mem_ctx, name);
410 W_ERROR_HAVE_NO_MEMORY(str);
411
412 if (format_offered == DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX) {
413 /* Look backwards for the \n, and replace it with / */
414 s = strrchr(str, '\n');
415 if (!s) {
416 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
417 return WERR_OK;
418 }
419 s[0] = '/';
420 }
421
422 s = strchr(str, '/');
423 if (!s) {
424 /* there must be at least one / */
425 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
426 return WERR_OK;
427 }
428
429 s[0] = '\0';
430 s++;
431
432 domain_filter = talloc_asprintf(mem_ctx, "(&(objectClass=crossRef)(ncName=%s))",
433 ldb_dn_get_linearized(samdb_dns_domain_to_dn(sam_ctx, mem_ctx, str)));
434 W_ERROR_HAVE_NO_MEMORY(domain_filter);
435
436 /* There may not be anything after the domain component (search for the domain itself) */
437 if (s[0]) {
438
439 account = strrchr(s, '/');
440 if (!account) {
441 account = s;
442 } else {
443 account++;
444 }
445 account = ldb_binary_encode_string(mem_ctx, account);
446 W_ERROR_HAVE_NO_MEMORY(account);
447 result_filter = talloc_asprintf(mem_ctx, "(name=%s)",
448 account);
449 W_ERROR_HAVE_NO_MEMORY(result_filter);
450 }
451 break;
452 }
453 case DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT: {
454 char *p;
455 char *domain;
456 const char *account = NULL;
457
458 domain = talloc_strdup(mem_ctx, name);
459 W_ERROR_HAVE_NO_MEMORY(domain);
460
461 p = strchr(domain, '\\');
462 if (!p) {
463 /* invalid input format */
464 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
465 return WERR_OK;
466 }
467 p[0] = '\0';
468
469 if (p[1]) {
470 account = &p[1];
471 }
472
473 domain_filter = talloc_asprintf(mem_ctx,
474 "(&(&(nETBIOSName=%s)(objectclass=crossRef))(ncName=*))",
475 ldb_binary_encode_string(mem_ctx, domain));
476 W_ERROR_HAVE_NO_MEMORY(domain_filter);
477 if (account) {
478 result_filter = talloc_asprintf(mem_ctx, "(sAMAccountName=%s)",
479 ldb_binary_encode_string(mem_ctx, account));
480 W_ERROR_HAVE_NO_MEMORY(result_filter);
481 }
482
483 talloc_free(domain);
484 break;
485 }
486
487 /* A LDAP DN as a string */
488 case DRSUAPI_DS_NAME_FORMAT_FQDN_1779: {
489 domain_filter = NULL;
490 name_dn = ldb_dn_new(mem_ctx, sam_ctx, name);
491 if (! ldb_dn_validate(name_dn)) {
492 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
493 return WERR_OK;
494 }
495 break;
496 }
497
498 /* A GUID as a string */
499 case DRSUAPI_DS_NAME_FORMAT_GUID: {
500 struct GUID guid;
501 char *ldap_guid;
502 NTSTATUS nt_status;
503 domain_filter = NULL;
504
505 nt_status = GUID_from_string(name, &guid);
506 if (!NT_STATUS_IS_OK(nt_status)) {
507 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
508 return WERR_OK;
509 }
510
511 ldap_guid = ldap_encode_ndr_GUID(mem_ctx, &guid);
512 if (!ldap_guid) {
513 return WERR_NOMEM;
514 }
515 result_filter = talloc_asprintf(mem_ctx, "(objectGUID=%s)",
516 ldap_guid);
517 W_ERROR_HAVE_NO_MEMORY(result_filter);
518 break;
519 }
520 case DRSUAPI_DS_NAME_FORMAT_DISPLAY: {
521 domain_filter = NULL;
522
523 result_filter = talloc_asprintf(mem_ctx, "(|(displayName=%s)(samAccountName=%s))",
524 ldb_binary_encode_string(mem_ctx, name),
525 ldb_binary_encode_string(mem_ctx, name));
526 W_ERROR_HAVE_NO_MEMORY(result_filter);
527 break;
528 }
529
530 /* A S-1234-5678 style string */
531 case DRSUAPI_DS_NAME_FORMAT_SID_OR_SID_HISTORY: {
532 struct dom_sid *sid = dom_sid_parse_talloc(mem_ctx, name);
533 char *ldap_sid;
534
535 domain_filter = NULL;
536 if (!sid) {
537 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
538 return WERR_OK;
539 }
540 ldap_sid = ldap_encode_ndr_dom_sid(mem_ctx,
541 sid);
542 if (!ldap_sid) {
543 return WERR_NOMEM;
544 }
545 result_filter = talloc_asprintf(mem_ctx, "(objectSid=%s)",
546 ldap_sid);
547 W_ERROR_HAVE_NO_MEMORY(result_filter);
548 break;
549 }
550 case DRSUAPI_DS_NAME_FORMAT_USER_PRINCIPAL: {
551 krb5_principal principal;
552 char *unparsed_name;
553
554 ret = smb_krb5_init_context(mem_ctx,
555 ldb_get_event_context(sam_ctx),
556 (struct loadparm_context *)ldb_get_opaque(sam_ctx, "loadparm"),
557 &smb_krb5_context);
558
559 if (ret) {
560 return WERR_NOMEM;
561 }
562
563 /* Ensure we reject compleate junk first */
564 ret = krb5_parse_name(smb_krb5_context->krb5_context, name, &principal);
565 if (ret) {
566 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
567 return WERR_OK;
568 }
569
570 domain_filter = NULL;
571
572 /* By getting the unparsed name here, we ensure the escaping is correct (and trust the client less) */
573 ret = krb5_unparse_name(smb_krb5_context->krb5_context, principal, &unparsed_name);
574 if (ret) {
575 krb5_free_principal(smb_krb5_context->krb5_context, principal);
576 return WERR_NOMEM;
577 }
578
579 krb5_free_principal(smb_krb5_context->krb5_context, principal);
580
581 /* The ldb_binary_encode_string() here avoid LDAP filter injection attacks */
582 result_filter = talloc_asprintf(mem_ctx, "(&(objectClass=user)(userPrincipalName=%s))",
583 ldb_binary_encode_string(mem_ctx, unparsed_name));
584
585 free(unparsed_name);
586 W_ERROR_HAVE_NO_MEMORY(result_filter);
587 break;
588 }
589 case DRSUAPI_DS_NAME_FORMAT_SERVICE_PRINCIPAL: {
590 krb5_principal principal;
591 char *unparsed_name_short;
592 char *service;
593
594 ret = smb_krb5_init_context(mem_ctx,
595 ldb_get_event_context(sam_ctx),
596 (struct loadparm_context *)ldb_get_opaque(sam_ctx, "loadparm"),
597 &smb_krb5_context);
598
599 if (ret) {
600 return WERR_NOMEM;
601 }
602
603 ret = krb5_parse_name(smb_krb5_context->krb5_context, name, &principal);
604 if (ret == 0 && principal->name.name_string.len < 2) {
605 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
606 krb5_free_principal(smb_krb5_context->krb5_context, principal);
607 return WERR_OK;
608 }
609 ret = krb5_parse_name_flags(smb_krb5_context->krb5_context, name,
610 KRB5_PRINCIPAL_PARSE_NO_REALM, &principal);
611 if (ret) {
612 krb5_free_principal(smb_krb5_context->krb5_context, principal);
613
614 return dns_domain_from_principal(mem_ctx, smb_krb5_context,
615 name, info1);
616 }
617
618 domain_filter = NULL;
619
620 ret = krb5_unparse_name_flags(smb_krb5_context->krb5_context, principal,
621 KRB5_PRINCIPAL_UNPARSE_NO_REALM, &unparsed_name_short);
622 if (ret) {
623 krb5_free_principal(smb_krb5_context->krb5_context, principal);
624 return WERR_NOMEM;
625 }
626
627 service = principal->name.name_string.val[0];
628 if ((principal->name.name_string.len == 2) && (strcasecmp(service, "host") == 0)) {
629 /* the 'cn' attribute is just the leading part of the name */
630 char *computer_name;
631 computer_name = talloc_strndup(mem_ctx, principal->name.name_string.val[1],
632 strcspn(principal->name.name_string.val[1], "."));
633 if (computer_name == NULL) {
634 return WERR_NOMEM;
635 }
636
637 result_filter = talloc_asprintf(mem_ctx, "(|(&(servicePrincipalName=%s)(objectClass=user))(&(cn=%s)(objectClass=computer)))",
638 ldb_binary_encode_string(mem_ctx, unparsed_name_short),
639 ldb_binary_encode_string(mem_ctx, computer_name));
640 } else {
641 result_filter = talloc_asprintf(mem_ctx, "(&(servicePrincipalName=%s)(objectClass=user))",
642 ldb_binary_encode_string(mem_ctx, unparsed_name_short));
643 }
644 krb5_free_principal(smb_krb5_context->krb5_context, principal);
645 free(unparsed_name_short);
646 W_ERROR_HAVE_NO_MEMORY(result_filter);
647
648 break;
649 }
650 default: {
651 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
652 return WERR_OK;
653 }
654
655 }
656
657 if (format_flags & DRSUAPI_DS_NAME_FLAG_SYNTACTICAL_ONLY) {
658 return DsCrackNameOneSyntactical(mem_ctx, format_offered, format_desired,
659 name_dn, name, info1);
660 }
661
662 return DsCrackNameOneFilter(sam_ctx, mem_ctx,
663 smb_krb5_context,
664 format_flags, format_offered, format_desired,
665 name_dn, name,
666 domain_filter, result_filter,
667 info1);
668}
669
670/* Subcase of CrackNames. It is possible to translate a LDAP-style DN
671 * (FQDN_1779) into a canoical name without actually searching the
672 * database */
673
674static WERROR DsCrackNameOneSyntactical(TALLOC_CTX *mem_ctx,
675 uint32_t format_offered, uint32_t format_desired,
676 struct ldb_dn *name_dn, const char *name,
677 struct drsuapi_DsNameInfo1 *info1)
678{
679 char *cracked;
680 if (format_offered != DRSUAPI_DS_NAME_FORMAT_FQDN_1779) {
681 info1->status = DRSUAPI_DS_NAME_STATUS_NO_SYNTACTICAL_MAPPING;
682 return WERR_OK;
683 }
684
685 switch (format_desired) {
686 case DRSUAPI_DS_NAME_FORMAT_CANONICAL:
687 cracked = ldb_dn_canonical_string(mem_ctx, name_dn);
688 break;
689 case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX:
690 cracked = ldb_dn_canonical_ex_string(mem_ctx, name_dn);
691 break;
692 default:
693 info1->status = DRSUAPI_DS_NAME_STATUS_NO_SYNTACTICAL_MAPPING;
694 return WERR_OK;
695 }
696 info1->status = DRSUAPI_DS_NAME_STATUS_OK;
697 info1->result_name = cracked;
698 if (!cracked) {
699 return WERR_NOMEM;
700 }
701
702 return WERR_OK;
703}
704
705/* Given a filter for the domain, and one for the result, perform the
706 * ldb search. The format offered and desired flags change the
707 * behaviours, including what attributes to return.
708 *
709 * The smb_krb5_context is required because we use the krb5 libs for principal parsing
710 */
711
712static WERROR DsCrackNameOneFilter(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
713 struct smb_krb5_context *smb_krb5_context,
714 uint32_t format_flags, uint32_t format_offered, uint32_t format_desired,
715 struct ldb_dn *name_dn, const char *name,
716 const char *domain_filter, const char *result_filter,
717 struct drsuapi_DsNameInfo1 *info1)
718{
719 int ldb_ret;
720 struct ldb_result *domain_res = NULL;
721 const char * const *domain_attrs;
722 const char * const *result_attrs;
723 struct ldb_message **result_res = NULL;
724 struct ldb_message *result = NULL;
725 struct ldb_dn *result_basedn = NULL;
726 int i;
727 char *p;
728 struct ldb_dn *partitions_basedn = samdb_partitions_dn(sam_ctx, mem_ctx);
729
730 const char * const _domain_attrs_1779[] = { "ncName", "dnsRoot", NULL};
731 const char * const _result_attrs_null[] = { NULL };
732
733 const char * const _domain_attrs_canonical[] = { "ncName", "dnsRoot", NULL};
734 const char * const _result_attrs_canonical[] = { "canonicalName", NULL };
735
736 const char * const _domain_attrs_nt4[] = { "ncName", "dnsRoot", "nETBIOSName", NULL};
737 const char * const _result_attrs_nt4[] = { "sAMAccountName", "objectSid", "objectClass", NULL};
738
739 const char * const _domain_attrs_guid[] = { "ncName", "dnsRoot", NULL};
740 const char * const _result_attrs_guid[] = { "objectGUID", NULL};
741
742 const char * const _domain_attrs_display[] = { "ncName", "dnsRoot", NULL};
743 const char * const _result_attrs_display[] = { "displayName", "samAccountName", NULL};
744
745 const char * const _domain_attrs_none[] = { "ncName", "dnsRoot" , NULL};
746 const char * const _result_attrs_none[] = { NULL};
747
748 /* here we need to set the attrs lists for domain and result lookups */
749 switch (format_desired) {
750 case DRSUAPI_DS_NAME_FORMAT_FQDN_1779:
751 case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX:
752 domain_attrs = _domain_attrs_1779;
753 result_attrs = _result_attrs_null;
754 break;
755 case DRSUAPI_DS_NAME_FORMAT_CANONICAL:
756 domain_attrs = _domain_attrs_canonical;
757 result_attrs = _result_attrs_canonical;
758 break;
759 case DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT:
760 domain_attrs = _domain_attrs_nt4;
761 result_attrs = _result_attrs_nt4;
762 break;
763 case DRSUAPI_DS_NAME_FORMAT_GUID:
764 domain_attrs = _domain_attrs_guid;
765 result_attrs = _result_attrs_guid;
766 break;
767 case DRSUAPI_DS_NAME_FORMAT_DISPLAY:
768 domain_attrs = _domain_attrs_display;
769 result_attrs = _result_attrs_display;
770 break;
771 default:
772 domain_attrs = _domain_attrs_none;
773 result_attrs = _result_attrs_none;
774 break;
775 }
776
777 if (domain_filter) {
778 /* if we have a domain_filter look it up and set the result_basedn and the dns_domain_name */
779 ldb_ret = ldb_search(sam_ctx, mem_ctx, &domain_res,
780 partitions_basedn,
781 LDB_SCOPE_ONELEVEL,
782 domain_attrs,
783 "%s", domain_filter);
784
785 if (ldb_ret != LDB_SUCCESS) {
786 DEBUG(2, ("DsCrackNameOneFilter domain ref search failed: %s", ldb_errstring(sam_ctx)));
787 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
788 return WERR_OK;
789 }
790
791 switch (domain_res->count) {
792 case 1:
793 break;
794 case 0:
795 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
796 return WERR_OK;
797 default:
798 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
799 return WERR_OK;
800 }
801
802 info1->dns_domain_name = samdb_result_string(domain_res->msgs[0], "dnsRoot", NULL);
803 W_ERROR_HAVE_NO_MEMORY(info1->dns_domain_name);
804 info1->status = DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY;
805 } else {
806 info1->dns_domain_name = NULL;
807 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
808 }
809
810 if (result_filter) {
811 int ret;
812 struct ldb_result *res;
813 if (domain_res) {
814 result_basedn = samdb_result_dn(sam_ctx, mem_ctx, domain_res->msgs[0], "ncName", NULL);
815
816 ret = ldb_search(sam_ctx, mem_ctx, &res,
817 result_basedn, LDB_SCOPE_SUBTREE,
818 result_attrs, "%s", result_filter);
819 if (ret != LDB_SUCCESS) {
820 talloc_free(result_res);
821 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
822 return WERR_OK;
823 }
824 ldb_ret = res->count;
825 result_res = res->msgs;
826 } else {
827 /* search with the 'phantom root' flag */
828 struct ldb_request *req;
829
830 res = talloc_zero(mem_ctx, struct ldb_result);
831 W_ERROR_HAVE_NO_MEMORY(res);
832
833 ret = ldb_build_search_req(&req, sam_ctx, mem_ctx,
834 ldb_get_root_basedn(sam_ctx),
835 LDB_SCOPE_SUBTREE,
836 result_filter,
837 result_attrs,
838 NULL,
839 res,
840 ldb_search_default_callback,
841 NULL);
842 if (ret == LDB_SUCCESS) {
843 struct ldb_search_options_control *search_options;
844 search_options = talloc(req, struct ldb_search_options_control);
845 W_ERROR_HAVE_NO_MEMORY(search_options);
846 search_options->search_options = LDB_SEARCH_OPTION_PHANTOM_ROOT;
847
848 ret = ldb_request_add_control(req, LDB_CONTROL_SEARCH_OPTIONS_OID, false, search_options);
849 }
850 if (ret != LDB_SUCCESS) {
851 talloc_free(res);
852 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
853 return WERR_OK;
854 }
855
856 ret = ldb_request(sam_ctx, req);
857
858 if (ret == LDB_SUCCESS) {
859 ret = ldb_wait(req->handle, LDB_WAIT_ALL);
860 }
861
862 talloc_free(req);
863
864 if (ret != LDB_SUCCESS) {
865 DEBUG(2, ("DsCrackNameOneFilter phantom root search failed: %s",
866 ldb_errstring(sam_ctx)));
867 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
868 return WERR_OK;
869 }
870 ldb_ret = res->count;
871 result_res = res->msgs;
872 }
873 } else if (format_offered == DRSUAPI_DS_NAME_FORMAT_FQDN_1779) {
874 ldb_ret = gendb_search_dn(sam_ctx, mem_ctx, name_dn, &result_res,
875 result_attrs);
876 } else if (domain_res) {
877 name_dn = samdb_result_dn(sam_ctx, mem_ctx, domain_res->msgs[0], "ncName", NULL);
878 ldb_ret = gendb_search_dn(sam_ctx, mem_ctx, name_dn, &result_res,
879 result_attrs);
880 } else {
881 /* Can't happen */
882 DEBUG(0, ("LOGIC ERROR: DsCrackNameOneFilter domain ref search not availible: This can't happen..."));
883 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
884 return WERR_OK;
885 }
886
887 switch (ldb_ret) {
888 case 1:
889 result = result_res[0];
890 break;
891 case 0:
892 switch (format_offered) {
893 case DRSUAPI_DS_NAME_FORMAT_SERVICE_PRINCIPAL:
894 return DsCrackNameSPNAlias(sam_ctx, mem_ctx,
895 smb_krb5_context,
896 format_flags, format_offered, format_desired,
897 name, info1);
898
899 case DRSUAPI_DS_NAME_FORMAT_USER_PRINCIPAL:
900 return DsCrackNameUPN(sam_ctx, mem_ctx, smb_krb5_context,
901 format_flags, format_offered, format_desired,
902 name, info1);
903 }
904 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
905 return WERR_OK;
906 case -1:
907 DEBUG(2, ("DsCrackNameOneFilter result search failed: %s", ldb_errstring(sam_ctx)));
908 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
909 return WERR_OK;
910 default:
911 switch (format_offered) {
912 case DRSUAPI_DS_NAME_FORMAT_CANONICAL:
913 case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX:
914 {
915 const char *canonical_name = NULL; /* Not required, but we get warnings... */
916 /* We may need to manually filter further */
917 for (i = 0; i < ldb_ret; i++) {
918 switch (format_offered) {
919 case DRSUAPI_DS_NAME_FORMAT_CANONICAL:
920 canonical_name = ldb_dn_canonical_string(mem_ctx, result_res[i]->dn);
921 break;
922 case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX:
923 canonical_name = ldb_dn_canonical_ex_string(mem_ctx, result_res[i]->dn);
924 break;
925 }
926 if (strcasecmp_m(canonical_name, name) == 0) {
927 result = result_res[i];
928 break;
929 }
930 }
931 if (!result) {
932 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
933 return WERR_OK;
934 }
935 }
936 default:
937 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
938 return WERR_OK;
939 }
940 }
941
942 info1->dns_domain_name = ldb_dn_canonical_string(mem_ctx, result->dn);
943 W_ERROR_HAVE_NO_MEMORY(info1->dns_domain_name);
944 p = strchr(info1->dns_domain_name, '/');
945 if (p) {
946 p[0] = '\0';
947 }
948
949 /* here we can use result and domain_res[0] */
950 switch (format_desired) {
951 case DRSUAPI_DS_NAME_FORMAT_FQDN_1779: {
952 info1->result_name = ldb_dn_alloc_linearized(mem_ctx, result->dn);
953 W_ERROR_HAVE_NO_MEMORY(info1->result_name);
954
955 info1->status = DRSUAPI_DS_NAME_STATUS_OK;
956 return WERR_OK;
957 }
958 case DRSUAPI_DS_NAME_FORMAT_CANONICAL: {
959 info1->result_name = samdb_result_string(result, "canonicalName", NULL);
960 info1->status = DRSUAPI_DS_NAME_STATUS_OK;
961 return WERR_OK;
962 }
963 case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX: {
964 /* Not in the virtual ldb attribute */
965 return DsCrackNameOneSyntactical(mem_ctx,
966 DRSUAPI_DS_NAME_FORMAT_FQDN_1779,
967 DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX,
968 result->dn, name, info1);
969 }
970 case DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT: {
971
972 const struct dom_sid *sid = samdb_result_dom_sid(mem_ctx, result, "objectSid");
973 const char *_acc = "", *_dom = "";
974
975 if (samdb_find_attribute(sam_ctx, result, "objectClass", "domain")) {
976
977 ldb_ret = ldb_search(sam_ctx, mem_ctx, &domain_res,
978 partitions_basedn,
979 LDB_SCOPE_ONELEVEL,
980 domain_attrs,
981 "(ncName=%s)", ldb_dn_get_linearized(result->dn));
982
983 if (ldb_ret != LDB_SUCCESS) {
984 DEBUG(2, ("DsCrackNameOneFilter domain ref search failed: %s", ldb_errstring(sam_ctx)));
985 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
986 return WERR_OK;
987 }
988
989 switch (domain_res->count) {
990 case 1:
991 break;
992 case 0:
993 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
994 return WERR_OK;
995 default:
996 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
997 return WERR_OK;
998 }
999 _dom = samdb_result_string(domain_res->msgs[0], "nETBIOSName", NULL);
1000 W_ERROR_HAVE_NO_MEMORY(_dom);
1001 } else {
1002 _acc = samdb_result_string(result, "sAMAccountName", NULL);
1003 if (!_acc) {
1004 info1->status = DRSUAPI_DS_NAME_STATUS_NO_MAPPING;
1005 return WERR_OK;
1006 }
1007 if (dom_sid_in_domain(dom_sid_parse_talloc(mem_ctx, SID_BUILTIN), sid)) {
1008 _dom = "BUILTIN";
1009 } else {
1010 const char *attrs[] = { NULL };
1011 struct ldb_result *domain_res2;
1012 struct dom_sid *dom_sid = dom_sid_dup(mem_ctx, sid);
1013 if (!dom_sid) {
1014 return WERR_OK;
1015 }
1016 dom_sid->num_auths--;
1017 ldb_ret = ldb_search(sam_ctx, mem_ctx, &domain_res,
1018 NULL,
1019 LDB_SCOPE_BASE,
1020 attrs,
1021 "(&(objectSid=%s)(objectClass=domain))",
1022 ldap_encode_ndr_dom_sid(mem_ctx, dom_sid));
1023
1024 if (ldb_ret != LDB_SUCCESS) {
1025 DEBUG(2, ("DsCrackNameOneFilter domain search failed: %s", ldb_errstring(sam_ctx)));
1026 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
1027 return WERR_OK;
1028 }
1029
1030 switch (domain_res->count) {
1031 case 1:
1032 break;
1033 case 0:
1034 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
1035 return WERR_OK;
1036 default:
1037 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
1038 return WERR_OK;
1039 }
1040
1041 ldb_ret = ldb_search(sam_ctx, mem_ctx, &domain_res2,
1042 partitions_basedn,
1043 LDB_SCOPE_ONELEVEL,
1044 domain_attrs,
1045 "(ncName=%s)", ldb_dn_get_linearized(domain_res->msgs[0]->dn));
1046
1047 if (ldb_ret != LDB_SUCCESS) {
1048 DEBUG(2, ("DsCrackNameOneFilter domain ref search failed: %s", ldb_errstring(sam_ctx)));
1049 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
1050 return WERR_OK;
1051 }
1052
1053 switch (domain_res2->count) {
1054 case 1:
1055 break;
1056 case 0:
1057 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
1058 return WERR_OK;
1059 default:
1060 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
1061 return WERR_OK;
1062 }
1063 _dom = samdb_result_string(domain_res2->msgs[0], "nETBIOSName", NULL);
1064 W_ERROR_HAVE_NO_MEMORY(_dom);
1065 }
1066 }
1067
1068 info1->result_name = talloc_asprintf(mem_ctx, "%s\\%s", _dom, _acc);
1069 W_ERROR_HAVE_NO_MEMORY(info1->result_name);
1070
1071 info1->status = DRSUAPI_DS_NAME_STATUS_OK;
1072 return WERR_OK;
1073 }
1074 case DRSUAPI_DS_NAME_FORMAT_GUID: {
1075 struct GUID guid;
1076
1077 guid = samdb_result_guid(result, "objectGUID");
1078
1079 info1->result_name = GUID_string2(mem_ctx, &guid);
1080 W_ERROR_HAVE_NO_MEMORY(info1->result_name);
1081
1082 info1->status = DRSUAPI_DS_NAME_STATUS_OK;
1083 return WERR_OK;
1084 }
1085 case DRSUAPI_DS_NAME_FORMAT_DISPLAY: {
1086 info1->result_name = samdb_result_string(result, "displayName", NULL);
1087 if (!info1->result_name) {
1088 info1->result_name = samdb_result_string(result, "sAMAccountName", NULL);
1089 }
1090 if (!info1->result_name) {
1091 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
1092 } else {
1093 info1->status = DRSUAPI_DS_NAME_STATUS_OK;
1094 }
1095 return WERR_OK;
1096 }
1097 case DRSUAPI_DS_NAME_FORMAT_SERVICE_PRINCIPAL: {
1098 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
1099 return WERR_OK;
1100 }
1101 case DRSUAPI_DS_NAME_FORMAT_DNS_DOMAIN:
1102 case DRSUAPI_DS_NAME_FORMAT_SID_OR_SID_HISTORY: {
1103 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
1104 return WERR_OK;
1105 }
1106 default:
1107 info1->status = DRSUAPI_DS_NAME_STATUS_NO_MAPPING;
1108 return WERR_OK;
1109 }
1110}
1111
1112/* Given a user Principal Name (such as foo@bar.com),
1113 * return the user and domain DNs. This is used in the KDC to then
1114 * return the Keys and evaluate policy */
1115
1116NTSTATUS crack_user_principal_name(struct ldb_context *sam_ctx,
1117 TALLOC_CTX *mem_ctx,
1118 const char *user_principal_name,
1119 struct ldb_dn **user_dn,
1120 struct ldb_dn **domain_dn)
1121{
1122 WERROR werr;
1123 struct drsuapi_DsNameInfo1 info1;
1124 werr = DsCrackNameOneName(sam_ctx, mem_ctx, 0,
1125 DRSUAPI_DS_NAME_FORMAT_USER_PRINCIPAL,
1126 DRSUAPI_DS_NAME_FORMAT_FQDN_1779,
1127 user_principal_name,
1128 &info1);
1129 if (!W_ERROR_IS_OK(werr)) {
1130 return werror_to_ntstatus(werr);
1131 }
1132 switch (info1.status) {
1133 case DRSUAPI_DS_NAME_STATUS_OK:
1134 break;
1135 case DRSUAPI_DS_NAME_STATUS_NOT_FOUND:
1136 case DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY:
1137 case DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE:
1138 return NT_STATUS_NO_SUCH_USER;
1139 case DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR:
1140 default:
1141 return NT_STATUS_UNSUCCESSFUL;
1142 }
1143
1144 *user_dn = ldb_dn_new(mem_ctx, sam_ctx, info1.result_name);
1145
1146 if (domain_dn) {
1147 werr = DsCrackNameOneName(sam_ctx, mem_ctx, 0,
1148 DRSUAPI_DS_NAME_FORMAT_CANONICAL,
1149 DRSUAPI_DS_NAME_FORMAT_FQDN_1779,
1150 talloc_asprintf(mem_ctx, "%s/",
1151 info1.dns_domain_name),
1152 &info1);
1153 if (!W_ERROR_IS_OK(werr)) {
1154 return werror_to_ntstatus(werr);
1155 }
1156 switch (info1.status) {
1157 case DRSUAPI_DS_NAME_STATUS_OK:
1158 break;
1159 case DRSUAPI_DS_NAME_STATUS_NOT_FOUND:
1160 case DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY:
1161 case DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE:
1162 return NT_STATUS_NO_SUCH_USER;
1163 case DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR:
1164 default:
1165 return NT_STATUS_UNSUCCESSFUL;
1166 }
1167
1168 *domain_dn = ldb_dn_new(mem_ctx, sam_ctx, info1.result_name);
1169 }
1170
1171 return NT_STATUS_OK;
1172}
1173
1174/* Given a Service Principal Name (such as host/foo.bar.com@BAR.COM),
1175 * return the user and domain DNs. This is used in the KDC to then
1176 * return the Keys and evaluate policy */
1177
1178NTSTATUS crack_service_principal_name(struct ldb_context *sam_ctx,
1179 TALLOC_CTX *mem_ctx,
1180 const char *service_principal_name,
1181 struct ldb_dn **user_dn,
1182 struct ldb_dn **domain_dn)
1183{
1184 WERROR werr;
1185 struct drsuapi_DsNameInfo1 info1;
1186 werr = DsCrackNameOneName(sam_ctx, mem_ctx, 0,
1187 DRSUAPI_DS_NAME_FORMAT_SERVICE_PRINCIPAL,
1188 DRSUAPI_DS_NAME_FORMAT_FQDN_1779,
1189 service_principal_name,
1190 &info1);
1191 if (!W_ERROR_IS_OK(werr)) {
1192 return werror_to_ntstatus(werr);
1193 }
1194 switch (info1.status) {
1195 case DRSUAPI_DS_NAME_STATUS_OK:
1196 break;
1197 case DRSUAPI_DS_NAME_STATUS_NOT_FOUND:
1198 case DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY:
1199 case DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE:
1200 return NT_STATUS_NO_SUCH_USER;
1201 case DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR:
1202 default:
1203 return NT_STATUS_UNSUCCESSFUL;
1204 }
1205
1206 *user_dn = ldb_dn_new(mem_ctx, sam_ctx, info1.result_name);
1207
1208 if (domain_dn) {
1209 werr = DsCrackNameOneName(sam_ctx, mem_ctx, 0,
1210 DRSUAPI_DS_NAME_FORMAT_CANONICAL,
1211 DRSUAPI_DS_NAME_FORMAT_FQDN_1779,
1212 talloc_asprintf(mem_ctx, "%s/",
1213 info1.dns_domain_name),
1214 &info1);
1215 if (!W_ERROR_IS_OK(werr)) {
1216 return werror_to_ntstatus(werr);
1217 }
1218 switch (info1.status) {
1219 case DRSUAPI_DS_NAME_STATUS_OK:
1220 break;
1221 case DRSUAPI_DS_NAME_STATUS_NOT_FOUND:
1222 case DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY:
1223 case DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE:
1224 return NT_STATUS_NO_SUCH_USER;
1225 case DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR:
1226 default:
1227 return NT_STATUS_UNSUCCESSFUL;
1228 }
1229
1230 *domain_dn = ldb_dn_new(mem_ctx, sam_ctx, info1.result_name);
1231 }
1232
1233 return NT_STATUS_OK;
1234}
1235
1236NTSTATUS crack_name_to_nt4_name(TALLOC_CTX *mem_ctx,
1237 struct tevent_context *ev_ctx,
1238 struct loadparm_context *lp_ctx,
1239 uint32_t format_offered,
1240 const char *name,
1241 const char **nt4_domain, const char **nt4_account)
1242{
1243 WERROR werr;
1244 struct drsuapi_DsNameInfo1 info1;
1245 struct ldb_context *ldb;
1246 char *p;
1247
1248 /* Handle anonymous bind */
1249 if (!name || !*name) {
1250 *nt4_domain = "";
1251 *nt4_account = "";
1252 return NT_STATUS_OK;
1253 }
1254
1255 ldb = samdb_connect(mem_ctx, ev_ctx, lp_ctx, system_session(mem_ctx, lp_ctx));
1256 if (ldb == NULL) {
1257 return NT_STATUS_INTERNAL_DB_CORRUPTION;
1258 }
1259
1260 werr = DsCrackNameOneName(ldb, mem_ctx, 0,
1261 format_offered,
1262 DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT,
1263 name,
1264 &info1);
1265 if (!W_ERROR_IS_OK(werr)) {
1266 return werror_to_ntstatus(werr);
1267 }
1268 switch (info1.status) {
1269 case DRSUAPI_DS_NAME_STATUS_OK:
1270 break;
1271 case DRSUAPI_DS_NAME_STATUS_NOT_FOUND:
1272 case DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY:
1273 case DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE:
1274 return NT_STATUS_NO_SUCH_USER;
1275 case DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR:
1276 default:
1277 return NT_STATUS_UNSUCCESSFUL;
1278 }
1279
1280 *nt4_domain = talloc_strdup(mem_ctx, info1.result_name);
1281 if (*nt4_domain == NULL) {
1282 return NT_STATUS_NO_MEMORY;
1283 }
1284
1285 p = strchr(*nt4_domain, '\\');
1286 if (!p) {
1287 return NT_STATUS_INVALID_PARAMETER;
1288 }
1289 p[0] = '\0';
1290
1291 if (p[1]) {
1292 *nt4_account = talloc_strdup(mem_ctx, &p[1]);
1293 if (*nt4_account == NULL) {
1294 return NT_STATUS_NO_MEMORY;
1295 }
1296 }
1297
1298 return NT_STATUS_OK;
1299}
1300
1301NTSTATUS crack_auto_name_to_nt4_name(TALLOC_CTX *mem_ctx,
1302 struct tevent_context *ev_ctx,
1303 struct loadparm_context *lp_ctx,
1304 const char *name,
1305 const char **nt4_domain,
1306 const char **nt4_account)
1307{
1308 uint32_t format_offered = DRSUAPI_DS_NAME_FORMAT_UNKNOWN;
1309
1310 /* Handle anonymous bind */
1311 if (!name || !*name) {
1312 *nt4_domain = "";
1313 *nt4_account = "";
1314 return NT_STATUS_OK;
1315 }
1316
1317 if (strchr_m(name, '=')) {
1318 format_offered = DRSUAPI_DS_NAME_FORMAT_FQDN_1779;
1319 } else if (strchr_m(name, '@')) {
1320 format_offered = DRSUAPI_DS_NAME_FORMAT_USER_PRINCIPAL;
1321 } else if (strchr_m(name, '\\')) {
1322 format_offered = DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT;
1323 } else if (strchr_m(name, '/')) {
1324 format_offered = DRSUAPI_DS_NAME_FORMAT_CANONICAL;
1325 } else {
1326 return NT_STATUS_NO_SUCH_USER;
1327 }
1328
1329 return crack_name_to_nt4_name(mem_ctx, ev_ctx, lp_ctx, format_offered, name, nt4_domain, nt4_account);
1330}
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