2 Unix SMB/CIFS implementation.
4 endpoint server for the drsuapi pipe
7 Copyright (C) Stefan Metzmacher 2004
8 Copyright (C) Andrew Bartlett <abartlet@samba.org> 2004-2005
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.
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.
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/>.
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"
40 static 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);
46 static 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);
51 static WERROR dns_domain_from_principal(TALLOC_CTX *mem_ctx, struct smb_krb5_context *smb_krb5_context,
53 struct drsuapi_DsNameInfo1 *info1)
56 krb5_principal principal;
57 /* perhaps it's a principal with a realm, so return the right 'domain only' response */
59 ret = krb5_parse_name_flags(smb_krb5_context->krb5_context, name,
60 KRB5_PRINCIPAL_PARSE_REQUIRE_REALM, &principal);
62 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
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);
69 info1->dns_domain_name = talloc_strdup(mem_ctx, realm);
70 krb5_free_principal(smb_krb5_context->krb5_context, principal);
72 W_ERROR_HAVE_NO_MEMORY(info1->dns_domain_name);
74 info1->status = DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY;
78 static enum drsuapi_DsNameStatus LDB_lookup_spn_alias(krb5_context context, struct ldb_context *ldb_ctx,
80 const char *alias_from,
85 struct ldb_result *res;
86 struct ldb_message_element *spnmappings;
88 struct ldb_dn *service_dn;
91 const char *directory_attrs[] = {
96 tmp_ctx = talloc_new(mem_ctx);
98 return DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
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;
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;
110 ret = ldb_search(ldb_ctx, tmp_ctx, &res, service_dn, LDB_SCOPE_BASE,
111 directory_attrs, "(objectClass=nTDSService)");
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) {
121 DEBUG(1, ("ldb_search: dn: %s not found", service_dn_str));
122 return DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
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;
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);
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;
142 /* C string manipulation sucks */
144 p = strchr(mapping, '=');
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;
160 if (strcasecmp(str, alias_from) == 0) {
162 talloc_steal(mem_ctx, mapping);
163 talloc_free(tmp_ctx);
164 return DRSUAPI_DS_NAME_STATUS_OK;
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;
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 */
178 static 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)
185 krb5_principal principal;
186 const char *service, *dns_name;
189 enum drsuapi_DsNameStatus namestatus;
191 /* parse principal */
192 ret = krb5_parse_name_flags(smb_krb5_context->krb5_context,
193 name, KRB5_PRINCIPAL_PARSE_NO_REALM, &principal);
195 DEBUG(2, ("Could not parse principal: %s: %s",
196 name, smb_get_krb5_error_message(smb_krb5_context->krb5_context,
201 /* grab cifs/, http/ etc */
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;
208 service = principal->name.name_string.val[0];
209 dns_name = principal->name.name_string.val[1];
212 namestatus = LDB_lookup_spn_alias(smb_krb5_context->krb5_context,
214 service, &new_service);
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);
224 } else if (namestatus != DRSUAPI_DS_NAME_STATUS_OK) {
225 info1->status = namestatus;
226 krb5_free_principal(smb_krb5_context->krb5_context, principal);
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);
238 /* reform principal */
239 ret = krb5_unparse_name_flags(smb_krb5_context->krb5_context, principal,
240 KRB5_PRINCIPAL_UNPARSE_NO_REALM, &new_princ);
243 krb5_free_principal(smb_krb5_context->krb5_context, principal);
247 wret = DsCrackNameOneName(sam_ctx, mem_ctx, format_flags, format_offered, format_desired,
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) {
257 krb5_free_principal(smb_krb5_context->krb5_context, principal);
261 /* Subcase of CrackNames, for the userPrincipalName */
263 static 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)
270 const char *domain_filter = NULL;
271 const char *result_filter = NULL;
273 krb5_principal principal;
275 char *unparsed_name_short;
276 const char *domain_attrs[] = { NULL };
277 struct ldb_result *domain_res = NULL;
279 /* Prevent recursion */
281 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
285 ret = krb5_parse_name_flags(smb_krb5_context->krb5_context, name,
286 KRB5_PRINCIPAL_PARSE_REQUIRE_REALM, &principal);
288 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
292 realm = krb5_principal_get_realm(smb_krb5_context->krb5_context, principal);
294 ldb_ret = ldb_search(sam_ctx, mem_ctx, &domain_res,
295 samdb_partitions_dn(sam_ctx, mem_ctx),
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));
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;
308 switch (domain_res->count) {
312 return dns_domain_from_principal(mem_ctx, smb_krb5_context,
315 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
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);
324 free(unparsed_name_short);
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));
332 domain_filter = talloc_asprintf(mem_ctx, "(distinguishedName=%s)", ldb_dn_get_linearized(domain_res->msgs[0]->dn));
334 if (!result_filter || !domain_filter) {
335 free(unparsed_name_short);
338 status = DsCrackNameOneFilter(sam_ctx, mem_ctx,
340 format_flags, format_offered, format_desired,
341 NULL, unparsed_name_short, domain_filter, result_filter,
343 free(unparsed_name_short);
348 /* Crack a single 'name', from format_offered into format_desired, returning the result in info1 */
350 WERROR 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)
355 const char *domain_filter = NULL;
356 const char *result_filter = NULL;
357 struct ldb_dn *name_dn = NULL;
359 struct smb_krb5_context *smb_krb5_context = NULL;
361 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
362 info1->dns_domain_name = NULL;
363 info1->result_name = NULL;
366 return WERR_INVALID_PARAM;
369 /* TODO: - fill the correct names in all cases!
370 * - handle format_flags
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:
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
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)) {
392 if (info1->status != DRSUAPI_DS_NAME_STATUS_NOT_FOUND) {
399 case DRSUAPI_DS_NAME_FORMAT_CANONICAL:
400 case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX:
402 char *str, *s, *account;
404 if (strlen(name) == 0) {
405 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
409 str = talloc_strdup(mem_ctx, name);
410 W_ERROR_HAVE_NO_MEMORY(str);
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');
416 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
422 s = strchr(str, '/');
424 /* there must be at least one / */
425 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
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);
436 /* There may not be anything after the domain component (search for the domain itself) */
439 account = strrchr(s, '/');
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)",
449 W_ERROR_HAVE_NO_MEMORY(result_filter);
453 case DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT: {
456 const char *account = NULL;
458 domain = talloc_strdup(mem_ctx, name);
459 W_ERROR_HAVE_NO_MEMORY(domain);
461 p = strchr(domain, '\\');
463 /* invalid input format */
464 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
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);
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);
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;
498 /* A GUID as a string */
499 case DRSUAPI_DS_NAME_FORMAT_GUID: {
503 domain_filter = NULL;
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;
511 ldap_guid = ldap_encode_ndr_GUID(mem_ctx, &guid);
515 result_filter = talloc_asprintf(mem_ctx, "(objectGUID=%s)",
517 W_ERROR_HAVE_NO_MEMORY(result_filter);
520 case DRSUAPI_DS_NAME_FORMAT_DISPLAY: {
521 domain_filter = NULL;
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);
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);
535 domain_filter = NULL;
537 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
540 ldap_sid = ldap_encode_ndr_dom_sid(mem_ctx,
545 result_filter = talloc_asprintf(mem_ctx, "(objectSid=%s)",
547 W_ERROR_HAVE_NO_MEMORY(result_filter);
550 case DRSUAPI_DS_NAME_FORMAT_USER_PRINCIPAL: {
551 krb5_principal principal;
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"),
563 /* Ensure we reject compleate junk first */
564 ret = krb5_parse_name(smb_krb5_context->krb5_context, name, &principal);
566 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
570 domain_filter = NULL;
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);
575 krb5_free_principal(smb_krb5_context->krb5_context, principal);
579 krb5_free_principal(smb_krb5_context->krb5_context, principal);
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));
586 W_ERROR_HAVE_NO_MEMORY(result_filter);
589 case DRSUAPI_DS_NAME_FORMAT_SERVICE_PRINCIPAL: {
590 krb5_principal principal;
591 char *unparsed_name_short;
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"),
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);
609 ret = krb5_parse_name_flags(smb_krb5_context->krb5_context, name,
610 KRB5_PRINCIPAL_PARSE_NO_REALM, &principal);
612 krb5_free_principal(smb_krb5_context->krb5_context, principal);
614 return dns_domain_from_principal(mem_ctx, smb_krb5_context,
618 domain_filter = NULL;
620 ret = krb5_unparse_name_flags(smb_krb5_context->krb5_context, principal,
621 KRB5_PRINCIPAL_UNPARSE_NO_REALM, &unparsed_name_short);
623 krb5_free_principal(smb_krb5_context->krb5_context, principal);
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 */
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) {
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));
641 result_filter = talloc_asprintf(mem_ctx, "(&(servicePrincipalName=%s)(objectClass=user))",
642 ldb_binary_encode_string(mem_ctx, unparsed_name_short));
644 krb5_free_principal(smb_krb5_context->krb5_context, principal);
645 free(unparsed_name_short);
646 W_ERROR_HAVE_NO_MEMORY(result_filter);
651 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
657 if (format_flags & DRSUAPI_DS_NAME_FLAG_SYNTACTICAL_ONLY) {
658 return DsCrackNameOneSyntactical(mem_ctx, format_offered, format_desired,
659 name_dn, name, info1);
662 return DsCrackNameOneFilter(sam_ctx, mem_ctx,
664 format_flags, format_offered, format_desired,
666 domain_filter, result_filter,
670 /* Subcase of CrackNames. It is possible to translate a LDAP-style DN
671 * (FQDN_1779) into a canoical name without actually searching the
674 static 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)
680 if (format_offered != DRSUAPI_DS_NAME_FORMAT_FQDN_1779) {
681 info1->status = DRSUAPI_DS_NAME_STATUS_NO_SYNTACTICAL_MAPPING;
685 switch (format_desired) {
686 case DRSUAPI_DS_NAME_FORMAT_CANONICAL:
687 cracked = ldb_dn_canonical_string(mem_ctx, name_dn);
689 case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX:
690 cracked = ldb_dn_canonical_ex_string(mem_ctx, name_dn);
693 info1->status = DRSUAPI_DS_NAME_STATUS_NO_SYNTACTICAL_MAPPING;
696 info1->status = DRSUAPI_DS_NAME_STATUS_OK;
697 info1->result_name = cracked;
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.
709 * The smb_krb5_context is required because we use the krb5 libs for principal parsing
712 static 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)
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;
728 struct ldb_dn *partitions_basedn = samdb_partitions_dn(sam_ctx, mem_ctx);
730 const char * const _domain_attrs_1779[] = { "ncName", "dnsRoot", NULL};
731 const char * const _result_attrs_null[] = { NULL };
733 const char * const _domain_attrs_canonical[] = { "ncName", "dnsRoot", NULL};
734 const char * const _result_attrs_canonical[] = { "canonicalName", NULL };
736 const char * const _domain_attrs_nt4[] = { "ncName", "dnsRoot", "nETBIOSName", NULL};
737 const char * const _result_attrs_nt4[] = { "sAMAccountName", "objectSid", "objectClass", NULL};
739 const char * const _domain_attrs_guid[] = { "ncName", "dnsRoot", NULL};
740 const char * const _result_attrs_guid[] = { "objectGUID", NULL};
742 const char * const _domain_attrs_display[] = { "ncName", "dnsRoot", NULL};
743 const char * const _result_attrs_display[] = { "displayName", "samAccountName", NULL};
745 const char * const _domain_attrs_none[] = { "ncName", "dnsRoot" , NULL};
746 const char * const _result_attrs_none[] = { NULL};
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;
755 case DRSUAPI_DS_NAME_FORMAT_CANONICAL:
756 domain_attrs = _domain_attrs_canonical;
757 result_attrs = _result_attrs_canonical;
759 case DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT:
760 domain_attrs = _domain_attrs_nt4;
761 result_attrs = _result_attrs_nt4;
763 case DRSUAPI_DS_NAME_FORMAT_GUID:
764 domain_attrs = _domain_attrs_guid;
765 result_attrs = _result_attrs_guid;
767 case DRSUAPI_DS_NAME_FORMAT_DISPLAY:
768 domain_attrs = _domain_attrs_display;
769 result_attrs = _result_attrs_display;
772 domain_attrs = _domain_attrs_none;
773 result_attrs = _result_attrs_none;
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,
783 "%s", domain_filter);
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;
791 switch (domain_res->count) {
795 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
798 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
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;
806 info1->dns_domain_name = NULL;
807 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
812 struct ldb_result *res;
814 result_basedn = samdb_result_dn(sam_ctx, mem_ctx, domain_res->msgs[0], "ncName", NULL);
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;
824 ldb_ret = res->count;
825 result_res = res->msgs;
827 /* search with the 'phantom root' flag */
828 struct ldb_request *req;
830 res = talloc_zero(mem_ctx, struct ldb_result);
831 W_ERROR_HAVE_NO_MEMORY(res);
833 ret = ldb_build_search_req(&req, sam_ctx, mem_ctx,
834 ldb_get_root_basedn(sam_ctx),
840 ldb_search_default_callback,
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;
848 ret = ldb_request_add_control(req, LDB_CONTROL_SEARCH_OPTIONS_OID, false, search_options);
850 if (ret != LDB_SUCCESS) {
852 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
856 ret = ldb_request(sam_ctx, req);
858 if (ret == LDB_SUCCESS) {
859 ret = ldb_wait(req->handle, LDB_WAIT_ALL);
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;
870 ldb_ret = res->count;
871 result_res = res->msgs;
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,
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,
882 DEBUG(0, ("LOGIC ERROR: DsCrackNameOneFilter domain ref search not availible: This can't happen..."));
883 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
889 result = result_res[0];
892 switch (format_offered) {
893 case DRSUAPI_DS_NAME_FORMAT_SERVICE_PRINCIPAL:
894 return DsCrackNameSPNAlias(sam_ctx, mem_ctx,
896 format_flags, format_offered, format_desired,
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,
904 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
907 DEBUG(2, ("DsCrackNameOneFilter result search failed: %s", ldb_errstring(sam_ctx)));
908 info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
911 switch (format_offered) {
912 case DRSUAPI_DS_NAME_FORMAT_CANONICAL:
913 case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX:
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);
922 case DRSUAPI_DS_NAME_FORMAT_CANONICAL_EX:
923 canonical_name = ldb_dn_canonical_ex_string(mem_ctx, result_res[i]->dn);
926 if (strcasecmp_m(canonical_name, name) == 0) {
927 result = result_res[i];
932 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
937 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
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, '/');
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);
955 info1->status = DRSUAPI_DS_NAME_STATUS_OK;
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;
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);
970 case DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT: {
972 const struct dom_sid *sid = samdb_result_dom_sid(mem_ctx, result, "objectSid");
973 const char *_acc = "", *_dom = "";
975 if (samdb_find_attribute(sam_ctx, result, "objectClass", "domain")) {
977 ldb_ret = ldb_search(sam_ctx, mem_ctx, &domain_res,
981 "(ncName=%s)", ldb_dn_get_linearized(result->dn));
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;
989 switch (domain_res->count) {
993 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
996 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
999 _dom = samdb_result_string(domain_res->msgs[0], "nETBIOSName", NULL);
1000 W_ERROR_HAVE_NO_MEMORY(_dom);
1002 _acc = samdb_result_string(result, "sAMAccountName", NULL);
1004 info1->status = DRSUAPI_DS_NAME_STATUS_NO_MAPPING;
1007 if (dom_sid_in_domain(dom_sid_parse_talloc(mem_ctx, SID_BUILTIN), sid)) {
1010 const char *attrs[] = { NULL };
1011 struct ldb_result *domain_res2;
1012 struct dom_sid *dom_sid = dom_sid_dup(mem_ctx, sid);
1016 dom_sid->num_auths--;
1017 ldb_ret = ldb_search(sam_ctx, mem_ctx, &domain_res,
1021 "(&(objectSid=%s)(objectClass=domain))",
1022 ldap_encode_ndr_dom_sid(mem_ctx, dom_sid));
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;
1030 switch (domain_res->count) {
1034 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
1037 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
1041 ldb_ret = ldb_search(sam_ctx, mem_ctx, &domain_res2,
1045 "(ncName=%s)", ldb_dn_get_linearized(domain_res->msgs[0]->dn));
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;
1053 switch (domain_res2->count) {
1057 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
1060 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
1063 _dom = samdb_result_string(domain_res2->msgs[0], "nETBIOSName", NULL);
1064 W_ERROR_HAVE_NO_MEMORY(_dom);
1068 info1->result_name = talloc_asprintf(mem_ctx, "%s\\%s", _dom, _acc);
1069 W_ERROR_HAVE_NO_MEMORY(info1->result_name);
1071 info1->status = DRSUAPI_DS_NAME_STATUS_OK;
1074 case DRSUAPI_DS_NAME_FORMAT_GUID: {
1077 guid = samdb_result_guid(result, "objectGUID");
1079 info1->result_name = GUID_string2(mem_ctx, &guid);
1080 W_ERROR_HAVE_NO_MEMORY(info1->result_name);
1082 info1->status = DRSUAPI_DS_NAME_STATUS_OK;
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);
1090 if (!info1->result_name) {
1091 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
1093 info1->status = DRSUAPI_DS_NAME_STATUS_OK;
1097 case DRSUAPI_DS_NAME_FORMAT_SERVICE_PRINCIPAL: {
1098 info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
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;
1107 info1->status = DRSUAPI_DS_NAME_STATUS_NO_MAPPING;
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 */
1116 NTSTATUS 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)
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,
1129 if (!W_ERROR_IS_OK(werr)) {
1130 return werror_to_ntstatus(werr);
1132 switch (info1.status) {
1133 case DRSUAPI_DS_NAME_STATUS_OK:
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:
1141 return NT_STATUS_UNSUCCESSFUL;
1144 *user_dn = ldb_dn_new(mem_ctx, sam_ctx, info1.result_name);
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),
1153 if (!W_ERROR_IS_OK(werr)) {
1154 return werror_to_ntstatus(werr);
1156 switch (info1.status) {
1157 case DRSUAPI_DS_NAME_STATUS_OK:
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:
1165 return NT_STATUS_UNSUCCESSFUL;
1168 *domain_dn = ldb_dn_new(mem_ctx, sam_ctx, info1.result_name);
1171 return NT_STATUS_OK;
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 */
1178 NTSTATUS 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)
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,
1191 if (!W_ERROR_IS_OK(werr)) {
1192 return werror_to_ntstatus(werr);
1194 switch (info1.status) {
1195 case DRSUAPI_DS_NAME_STATUS_OK:
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:
1203 return NT_STATUS_UNSUCCESSFUL;
1206 *user_dn = ldb_dn_new(mem_ctx, sam_ctx, info1.result_name);
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),
1215 if (!W_ERROR_IS_OK(werr)) {
1216 return werror_to_ntstatus(werr);
1218 switch (info1.status) {
1219 case DRSUAPI_DS_NAME_STATUS_OK:
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:
1227 return NT_STATUS_UNSUCCESSFUL;
1230 *domain_dn = ldb_dn_new(mem_ctx, sam_ctx, info1.result_name);
1233 return NT_STATUS_OK;
1236 NTSTATUS 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,
1241 const char **nt4_domain, const char **nt4_account)
1244 struct drsuapi_DsNameInfo1 info1;
1245 struct ldb_context *ldb;
1248 /* Handle anonymous bind */
1249 if (!name || !*name) {
1252 return NT_STATUS_OK;
1255 ldb = samdb_connect(mem_ctx, ev_ctx, lp_ctx, system_session(mem_ctx, lp_ctx));
1257 return NT_STATUS_INTERNAL_DB_CORRUPTION;
1260 werr = DsCrackNameOneName(ldb, mem_ctx, 0,
1262 DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT,
1265 if (!W_ERROR_IS_OK(werr)) {
1266 return werror_to_ntstatus(werr);
1268 switch (info1.status) {
1269 case DRSUAPI_DS_NAME_STATUS_OK:
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:
1277 return NT_STATUS_UNSUCCESSFUL;
1280 *nt4_domain = talloc_strdup(mem_ctx, info1.result_name);
1281 if (*nt4_domain == NULL) {
1282 return NT_STATUS_NO_MEMORY;
1285 p = strchr(*nt4_domain, '\\');
1287 return NT_STATUS_INVALID_PARAMETER;
1291 *nt4_account = talloc_strdup(mem_ctx, &p[1]);
1292 if (*nt4_account == NULL) {
1293 return NT_STATUS_NO_MEMORY;
1296 return NT_STATUS_OK;
1299 NTSTATUS crack_auto_name_to_nt4_name(TALLOC_CTX *mem_ctx,
1300 struct tevent_context *ev_ctx,
1301 struct loadparm_context *lp_ctx,
1303 const char **nt4_domain,
1304 const char **nt4_account)
1306 uint32_t format_offered = DRSUAPI_DS_NAME_FORMAT_UNKNOWN;
1308 /* Handle anonymous bind */
1309 if (!name || !*name) {
1312 return NT_STATUS_OK;
1315 if (strchr_m(name, '=')) {
1316 format_offered = DRSUAPI_DS_NAME_FORMAT_FQDN_1779;
1317 } else if (strchr_m(name, '@')) {
1318 format_offered = DRSUAPI_DS_NAME_FORMAT_USER_PRINCIPAL;
1319 } else if (strchr_m(name, '\\')) {
1320 format_offered = DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT;
1321 } else if (strchr_m(name, '/')) {
1322 format_offered = DRSUAPI_DS_NAME_FORMAT_CANONICAL;
1324 return NT_STATUS_NO_SUCH_USER;
1327 return crack_name_to_nt4_name(mem_ctx, ev_ctx, lp_ctx, format_offered, name, nt4_domain, nt4_account);