2 * Unix SMB/CIFS implementation.
3 * Group Policy Object Support
4 * Copyright (C) Guenther Deschner 2005,2007
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 3 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, see <http://www.gnu.org/licenses/>.
21 #include "libgpo/gpo.h"
23 #if _SAMBA_BUILD_ == 4
24 #include "libgpo/gpo_s4.h"
25 #include "source4/libgpo/ads_convenience.h"
27 #include "../libcli/security/security.h"
29 /****************************************************************
30 parse the raw extension string into a GP_EXT structure
31 ****************************************************************/
33 bool ads_parse_gp_ext(TALLOC_CTX *mem_ctx,
34 const char *extension_raw,
35 struct GP_EXT **gp_ext)
38 struct GP_EXT *ext = NULL;
39 char **ext_list = NULL;
40 char **ext_strings = NULL;
47 DEBUG(20,("ads_parse_gp_ext: %s\n", extension_raw));
49 ext = talloc_zero(mem_ctx, struct GP_EXT);
54 ext_list = str_list_make(mem_ctx, extension_raw, "]");
59 for (i = 0; ext_list[i] != NULL; i++) {
66 ext->extensions = talloc_zero_array(mem_ctx, char *,
68 ext->extensions_guid = talloc_zero_array(mem_ctx, char *,
70 ext->snapins = talloc_zero_array(mem_ctx, char *,
72 ext->snapins_guid = talloc_zero_array(mem_ctx, char *,
76 ext->gp_extension = talloc_strdup(mem_ctx, extension_raw);
78 if (!ext->extensions || !ext->extensions_guid ||
79 !ext->snapins || !ext->snapins_guid ||
84 for (i = 0; ext_list[i] != NULL; i++) {
89 DEBUGADD(10,("extension #%d\n", i));
97 ext_strings = str_list_make(mem_ctx, p, "}");
98 if (ext_strings == NULL) {
102 for (k = 0; ext_strings[k] != NULL; k++) {
112 ext->extensions[i] = talloc_strdup(mem_ctx,
113 cse_gpo_guid_string_to_name(q));
114 ext->extensions_guid[i] = talloc_strdup(mem_ctx, q);
116 /* we might have no name for the guid */
117 if (ext->extensions_guid[i] == NULL) {
121 for (k = 1; ext_strings[k] != NULL; k++) {
123 char *m = ext_strings[k];
129 /* FIXME: theoretically there could be more than one
130 * snapin per extension */
131 ext->snapins[i] = talloc_strdup(mem_ctx,
132 cse_snapin_gpo_guid_string_to_name(m));
133 ext->snapins_guid[i] = talloc_strdup(mem_ctx, m);
135 /* we might have no name for the guid */
136 if (ext->snapins_guid[i] == NULL) {
147 talloc_free(ext_list);
148 talloc_free(ext_strings);
155 /****************************************************************
156 parse the raw link string into a GP_LINK structure
157 ****************************************************************/
159 static ADS_STATUS gpo_parse_gplink(TALLOC_CTX *mem_ctx,
160 const char *gp_link_raw,
162 struct GP_LINK *gp_link)
164 ADS_STATUS status = ADS_ERROR_NT(NT_STATUS_NO_MEMORY);
168 ZERO_STRUCTP(gp_link);
170 DEBUG(10,("gpo_parse_gplink: gPLink: %s\n", gp_link_raw));
172 link_list = str_list_make_v3(mem_ctx, gp_link_raw, "]");
177 for (i = 0; link_list[i] != NULL; i++) {
181 gp_link->gp_opts = options;
182 gp_link->num_links = i;
184 if (gp_link->num_links) {
185 gp_link->link_names = talloc_zero_array(mem_ctx, char *,
187 gp_link->link_opts = talloc_zero_array(mem_ctx, uint32_t,
191 gp_link->gp_link = talloc_strdup(mem_ctx, gp_link_raw);
193 if (!gp_link->link_names || !gp_link->link_opts || !gp_link->gp_link) {
197 for (i = 0; link_list[i] != NULL; i++) {
201 DEBUGADD(10,("gpo_parse_gplink: processing link #%d\n", i));
214 gp_link->link_names[i] = talloc_strdup(mem_ctx, q);
215 if (gp_link->link_names[i] == NULL) {
218 gp_link->link_names[i][PTR_DIFF(p, q)] = 0;
220 gp_link->link_opts[i] = atoi(p + 1);
222 DEBUGADD(10,("gpo_parse_gplink: link: %s\n",
223 gp_link->link_names[i]));
224 DEBUGADD(10,("gpo_parse_gplink: opt: %d\n",
225 gp_link->link_opts[i]));
229 status = ADS_SUCCESS;
232 talloc_free(link_list);
237 /****************************************************************
238 helper call to get a GP_LINK structure from a linkdn
239 ****************************************************************/
241 ADS_STATUS ads_get_gpo_link(ADS_STRUCT *ads,
244 struct GP_LINK *gp_link_struct)
247 const char *attrs[] = {"gPLink", "gPOptions", NULL};
248 LDAPMessage *res = NULL;
252 ZERO_STRUCTP(gp_link_struct);
254 status = ads_search_dn(ads, &res, link_dn, attrs);
255 if (!ADS_ERR_OK(status)) {
256 DEBUG(10,("ads_get_gpo_link: search failed with %s\n",
257 ads_errstr(status)));
261 if (ads_count_replies(ads, res) != 1) {
262 DEBUG(10,("ads_get_gpo_link: no result\n"));
263 ads_msgfree(ads, res);
264 return ADS_ERROR(LDAP_NO_SUCH_OBJECT);
267 gp_link = ads_pull_string(ads, mem_ctx, res, "gPLink");
268 if (gp_link == NULL) {
269 DEBUG(10,("ads_get_gpo_link: no 'gPLink' attribute found\n"));
270 ads_msgfree(ads, res);
271 return ADS_ERROR(LDAP_NO_SUCH_ATTRIBUTE);
274 /* perfectly legal to have no options */
275 if (!ads_pull_uint32(ads, res, "gPOptions", &gp_options)) {
276 DEBUG(10,("ads_get_gpo_link: "
277 "no 'gPOptions' attribute found\n"));
281 ads_msgfree(ads, res);
283 return gpo_parse_gplink(mem_ctx, gp_link, gp_options, gp_link_struct);
286 /****************************************************************
287 helper call to add a gp link
288 ****************************************************************/
290 ADS_STATUS ads_add_gpo_link(ADS_STRUCT *ads,
297 const char *attrs[] = {"gPLink", NULL};
298 LDAPMessage *res = NULL;
299 const char *gp_link, *gp_link_new;
302 /* although ADS allows to set anything here, we better check here if
303 * the gpo_dn is sane */
305 if (!strnequal(gpo_dn, "LDAP://CN={", strlen("LDAP://CN={")) != 0) {
306 return ADS_ERROR(LDAP_INVALID_DN_SYNTAX);
309 status = ads_search_dn(ads, &res, link_dn, attrs);
310 if (!ADS_ERR_OK(status)) {
311 DEBUG(10,("ads_add_gpo_link: search failed with %s\n",
312 ads_errstr(status)));
316 if (ads_count_replies(ads, res) != 1) {
317 DEBUG(10,("ads_add_gpo_link: no result\n"));
318 ads_msgfree(ads, res);
319 return ADS_ERROR(LDAP_NO_SUCH_OBJECT);
322 gp_link = ads_pull_string(ads, mem_ctx, res, "gPLink");
323 if (gp_link == NULL) {
324 gp_link_new = talloc_asprintf(mem_ctx, "[%s;%d]",
327 gp_link_new = talloc_asprintf(mem_ctx, "%s[%s;%d]",
328 gp_link, gpo_dn, gpo_opt);
331 ads_msgfree(ads, res);
332 ADS_ERROR_HAVE_NO_MEMORY(gp_link_new);
334 mods = ads_init_mods(mem_ctx);
335 ADS_ERROR_HAVE_NO_MEMORY(mods);
337 status = ads_mod_str(mem_ctx, &mods, "gPLink", gp_link_new);
338 if (!ADS_ERR_OK(status)) {
342 return ads_gen_mod(ads, link_dn, mods);
345 /****************************************************************
346 helper call to delete add a gp link
347 ****************************************************************/
349 /* untested & broken */
350 ADS_STATUS ads_delete_gpo_link(ADS_STRUCT *ads,
356 const char *attrs[] = {"gPLink", NULL};
357 LDAPMessage *res = NULL;
358 const char *gp_link, *gp_link_new = NULL;
361 /* check for a sane gpo_dn */
362 if (gpo_dn[0] != '[') {
363 DEBUG(10,("ads_delete_gpo_link: first char not: [\n"));
364 return ADS_ERROR(LDAP_INVALID_DN_SYNTAX);
367 if (gpo_dn[strlen(gpo_dn)] != ']') {
368 DEBUG(10,("ads_delete_gpo_link: last char not: ]\n"));
369 return ADS_ERROR(LDAP_INVALID_DN_SYNTAX);
372 status = ads_search_dn(ads, &res, link_dn, attrs);
373 if (!ADS_ERR_OK(status)) {
374 DEBUG(10,("ads_delete_gpo_link: search failed with %s\n",
375 ads_errstr(status)));
379 if (ads_count_replies(ads, res) != 1) {
380 DEBUG(10,("ads_delete_gpo_link: no result\n"));
381 ads_msgfree(ads, res);
382 return ADS_ERROR(LDAP_NO_SUCH_OBJECT);
385 gp_link = ads_pull_string(ads, mem_ctx, res, "gPLink");
386 if (gp_link == NULL) {
387 return ADS_ERROR(LDAP_NO_SUCH_ATTRIBUTE);
390 /* find link to delete */
391 /* gp_link_new = talloc_asprintf(mem_ctx, "%s[%s;%d]", gp_link,
394 ads_msgfree(ads, res);
395 ADS_ERROR_HAVE_NO_MEMORY(gp_link_new);
397 mods = ads_init_mods(mem_ctx);
398 ADS_ERROR_HAVE_NO_MEMORY(mods);
400 status = ads_mod_str(mem_ctx, &mods, "gPLink", gp_link_new);
401 if (!ADS_ERR_OK(status)) {
405 return ads_gen_mod(ads, link_dn, mods);
408 /****************************************************************
409 parse a GROUP_POLICY_OBJECT structure from an LDAPMessage result
410 ****************************************************************/
412 ADS_STATUS ads_parse_gpo(ADS_STRUCT *ads,
416 struct GROUP_POLICY_OBJECT *gpo)
420 ADS_ERROR_HAVE_NO_MEMORY(res);
423 gpo->ds_path = talloc_strdup(mem_ctx, gpo_dn);
425 gpo->ds_path = ads_get_dn(ads, mem_ctx, res);
428 ADS_ERROR_HAVE_NO_MEMORY(gpo->ds_path);
430 if (!ads_pull_uint32(ads, res, "versionNumber", &gpo->version)) {
431 return ADS_ERROR(LDAP_NO_MEMORY);
434 if (!ads_pull_uint32(ads, res, "flags", &gpo->options)) {
435 return ADS_ERROR(LDAP_NO_MEMORY);
438 gpo->file_sys_path = ads_pull_string(ads, mem_ctx, res,
440 ADS_ERROR_HAVE_NO_MEMORY(gpo->file_sys_path);
442 gpo->display_name = ads_pull_string(ads, mem_ctx, res,
444 ADS_ERROR_HAVE_NO_MEMORY(gpo->display_name);
446 gpo->name = ads_pull_string(ads, mem_ctx, res,
448 ADS_ERROR_HAVE_NO_MEMORY(gpo->name);
450 gpo->machine_extensions = ads_pull_string(ads, mem_ctx, res,
451 "gPCMachineExtensionNames");
452 gpo->user_extensions = ads_pull_string(ads, mem_ctx, res,
453 "gPCUserExtensionNames");
455 ads_pull_sd(ads, mem_ctx, res, "ntSecurityDescriptor",
456 &gpo->security_descriptor);
457 ADS_ERROR_HAVE_NO_MEMORY(gpo->security_descriptor);
459 return ADS_ERROR(LDAP_SUCCESS);
462 /****************************************************************
463 get a GROUP_POLICY_OBJECT structure based on different input parameters
464 ****************************************************************/
466 ADS_STATUS ads_get_gpo(ADS_STRUCT *ads,
469 const char *display_name,
470 const char *guid_name,
471 struct GROUP_POLICY_OBJECT *gpo)
474 LDAPMessage *res = NULL;
477 const char *attrs[] = {
482 "gPCFunctionalityVersion",
483 "gPCMachineExtensionNames",
484 "gPCUserExtensionNames",
487 "ntSecurityDescriptor",
490 uint32_t sd_flags = SECINFO_DACL;
494 if (!gpo_dn && !display_name && !guid_name) {
495 return ADS_ERROR(LDAP_NO_SUCH_OBJECT);
500 if (strnequal(gpo_dn, "LDAP://", strlen("LDAP://")) != 0) {
501 gpo_dn = gpo_dn + strlen("LDAP://");
504 status = ads_search_retry_dn_sd_flags(ads, &res,
508 } else if (display_name || guid_name) {
510 filter = talloc_asprintf(mem_ctx,
511 "(&(objectclass=groupPolicyContainer)(%s=%s))",
512 display_name ? "displayName" : "name",
513 display_name ? display_name : guid_name);
514 ADS_ERROR_HAVE_NO_MEMORY(filter);
516 status = ads_do_search_all_sd_flags(ads, ads->config.bind_path,
517 LDAP_SCOPE_SUBTREE, filter,
518 attrs, sd_flags, &res);
521 if (!ADS_ERR_OK(status)) {
522 DEBUG(10,("ads_get_gpo: search failed with %s\n",
523 ads_errstr(status)));
527 if (ads_count_replies(ads, res) != 1) {
528 DEBUG(10,("ads_get_gpo: no result\n"));
529 ads_msgfree(ads, res);
530 return ADS_ERROR(LDAP_NO_SUCH_OBJECT);
533 dn = ads_get_dn(ads, mem_ctx, res);
535 ads_msgfree(ads, res);
536 return ADS_ERROR(LDAP_NO_MEMORY);
539 status = ads_parse_gpo(ads, mem_ctx, res, dn, gpo);
540 ads_msgfree(ads, res);
546 /****************************************************************
547 add a gplink to the GROUP_POLICY_OBJECT linked list
548 ****************************************************************/
550 static ADS_STATUS add_gplink_to_gpo_list(ADS_STRUCT *ads,
552 struct GROUP_POLICY_OBJECT **gpo_list,
554 struct GP_LINK *gp_link,
555 enum GPO_LINK_TYPE link_type,
556 bool only_add_forced_gpos,
557 const struct security_token *token)
562 for (i = 0; i < gp_link->num_links; i++) {
564 struct GROUP_POLICY_OBJECT *new_gpo = NULL;
566 if (gp_link->link_opts[i] & GPO_LINK_OPT_DISABLED) {
567 DEBUG(10,("skipping disabled GPO\n"));
571 if (only_add_forced_gpos) {
573 if (!(gp_link->link_opts[i] & GPO_LINK_OPT_ENFORCED)) {
574 DEBUG(10,("skipping nonenforced GPO link "
575 "because GPOPTIONS_BLOCK_INHERITANCE "
579 DEBUG(10,("adding enforced GPO link although "
580 "the GPOPTIONS_BLOCK_INHERITANCE "
585 new_gpo = talloc_zero(mem_ctx, struct GROUP_POLICY_OBJECT);
586 ADS_ERROR_HAVE_NO_MEMORY(new_gpo);
588 status = ads_get_gpo(ads, mem_ctx, gp_link->link_names[i],
589 NULL, NULL, new_gpo);
590 if (!ADS_ERR_OK(status)) {
591 DEBUG(10,("failed to get gpo: %s\n",
592 gp_link->link_names[i]));
596 status = ADS_ERROR_NT(gpo_apply_security_filtering(new_gpo,
598 if (!ADS_ERR_OK(status)) {
599 DEBUG(10,("skipping GPO \"%s\" as object "
600 "has no access to it\n",
601 new_gpo->display_name));
602 talloc_free(new_gpo);
606 new_gpo->link = link_dn;
607 new_gpo->link_type = link_type;
609 DLIST_ADD(*gpo_list, new_gpo);
611 DEBUG(10,("add_gplink_to_gplist: added GPLINK #%d %s "
612 "to GPO list\n", i, gp_link->link_names[i]));
615 return ADS_ERROR(LDAP_SUCCESS);
618 /****************************************************************
619 ****************************************************************/
621 ADS_STATUS ads_get_sid_token(ADS_STRUCT *ads,
624 struct security_token **token)
627 struct dom_sid object_sid;
628 struct dom_sid primary_group_sid;
629 struct dom_sid *ad_token_sids;
630 size_t num_ad_token_sids = 0;
631 struct dom_sid *token_sids;
632 uint32_t num_token_sids = 0;
633 struct security_token *new_token = NULL;
636 status = ads_get_tokensids(ads, mem_ctx, dn,
637 &object_sid, &primary_group_sid,
638 &ad_token_sids, &num_ad_token_sids);
639 if (!ADS_ERR_OK(status)) {
643 token_sids = talloc_array(mem_ctx, struct dom_sid, 1);
644 ADS_ERROR_HAVE_NO_MEMORY(token_sids);
646 status = ADS_ERROR_NT(add_sid_to_array_unique(mem_ctx,
650 if (!ADS_ERR_OK(status)) {
654 for (i = 0; i < num_ad_token_sids; i++) {
656 if (sid_check_is_in_builtin(&ad_token_sids[i])) {
660 status = ADS_ERROR_NT(add_sid_to_array_unique(mem_ctx,
664 if (!ADS_ERR_OK(status)) {
669 new_token = create_local_nt_token(mem_ctx, &object_sid, false,
670 num_token_sids, token_sids);
671 ADS_ERROR_HAVE_NO_MEMORY(new_token);
675 security_token_debug(DBGC_CLASS, 5, *token);
677 return ADS_ERROR_LDAP(LDAP_SUCCESS);
680 /****************************************************************
681 ****************************************************************/
683 static ADS_STATUS add_local_policy_to_gpo_list(TALLOC_CTX *mem_ctx,
684 struct GROUP_POLICY_OBJECT **gpo_list,
685 enum GPO_LINK_TYPE link_type)
687 struct GROUP_POLICY_OBJECT *gpo = NULL;
689 ADS_ERROR_HAVE_NO_MEMORY(gpo_list);
691 gpo = talloc_zero(mem_ctx, struct GROUP_POLICY_OBJECT);
692 ADS_ERROR_HAVE_NO_MEMORY(gpo);
694 gpo->name = talloc_strdup(mem_ctx, "Local Policy");
695 ADS_ERROR_HAVE_NO_MEMORY(gpo->name);
697 gpo->display_name = talloc_strdup(mem_ctx, "Local Policy");
698 ADS_ERROR_HAVE_NO_MEMORY(gpo->display_name);
700 gpo->link_type = link_type;
702 DLIST_ADD(*gpo_list, gpo);
704 return ADS_ERROR_NT(NT_STATUS_OK);
707 /****************************************************************
708 get the full list of GROUP_POLICY_OBJECTs for a given dn
709 ****************************************************************/
711 ADS_STATUS ads_get_gpo_list(ADS_STRUCT *ads,
715 const struct security_token *token,
716 struct GROUP_POLICY_OBJECT **gpo_list)
718 /* (L)ocal (S)ite (D)omain (O)rganizational(U)nit */
721 struct GP_LINK gp_link;
722 const char *parent_dn, *site_dn, *tmp_dn;
723 bool add_only_forced_gpos = false;
725 ZERO_STRUCTP(gpo_list);
728 return ADS_ERROR_NT(NT_STATUS_INVALID_PARAMETER);
731 if (!ads_set_sasl_wrap_flags(ads, ADS_AUTH_SASL_SIGN)) {
732 return ADS_ERROR(LDAP_INVALID_CREDENTIALS);
735 DEBUG(10,("ads_get_gpo_list: getting GPO list for [%s]\n", dn));
738 status = add_local_policy_to_gpo_list(mem_ctx, gpo_list,
740 if (!ADS_ERR_OK(status)) {
746 /* are site GPOs valid for users as well ??? */
747 if (flags & GPO_LIST_FLAG_MACHINE) {
749 status = ads_site_dn_for_machine(ads, mem_ctx,
750 ads->config.ldap_server_name,
752 if (!ADS_ERR_OK(status)) {
756 DEBUG(10,("ads_get_gpo_list: query SITE: [%s] for GPOs\n",
759 status = ads_get_gpo_link(ads, mem_ctx, site_dn, &gp_link);
760 if (ADS_ERR_OK(status)) {
762 if (DEBUGLEVEL >= 100) {
763 dump_gplink(ads, mem_ctx, &gp_link);
766 status = add_gplink_to_gpo_list(ads, mem_ctx, gpo_list,
769 add_only_forced_gpos,
771 if (!ADS_ERR_OK(status)) {
775 if (flags & GPO_LIST_FLAG_SITEONLY) {
776 return ADS_ERROR(LDAP_SUCCESS);
779 /* inheritance can't be blocked at the site level */
785 while ((parent_dn = ads_parent_dn(tmp_dn)) &&
786 (!strequal(parent_dn, ads_parent_dn(ads->config.bind_path)))) {
790 /* An account can just be a member of one domain */
791 if (strncmp(parent_dn, "DC=", strlen("DC=")) == 0) {
793 DEBUG(10,("ads_get_gpo_list: query DC: [%s] for GPOs\n",
796 status = ads_get_gpo_link(ads, mem_ctx, parent_dn,
798 if (ADS_ERR_OK(status)) {
800 if (DEBUGLEVEL >= 100) {
801 dump_gplink(ads, mem_ctx, &gp_link);
804 /* block inheritance from now on */
805 if (gp_link.gp_opts &
806 GPOPTIONS_BLOCK_INHERITANCE) {
807 add_only_forced_gpos = true;
810 status = add_gplink_to_gpo_list(ads,
816 add_only_forced_gpos,
818 if (!ADS_ERR_OK(status)) {
830 while ((parent_dn = ads_parent_dn(tmp_dn)) &&
831 (!strequal(parent_dn, ads_parent_dn(ads->config.bind_path)))) {
834 /* (O)rganizational(U)nit */
836 /* An account can be a member of more OUs */
837 if (strncmp(parent_dn, "OU=", strlen("OU=")) == 0) {
839 DEBUG(10,("ads_get_gpo_list: query OU: [%s] for GPOs\n",
842 status = ads_get_gpo_link(ads, mem_ctx, parent_dn,
844 if (ADS_ERR_OK(status)) {
846 if (DEBUGLEVEL >= 100) {
847 dump_gplink(ads, mem_ctx, &gp_link);
850 /* block inheritance from now on */
851 if (gp_link.gp_opts &
852 GPOPTIONS_BLOCK_INHERITANCE) {
853 add_only_forced_gpos = true;
856 status = add_gplink_to_gpo_list(ads,
862 add_only_forced_gpos,
864 if (!ADS_ERR_OK(status)) {
874 return ADS_ERROR(LDAP_SUCCESS);
877 #endif /* HAVE_LDAP */