2 * Unix SMB/CIFS implementation.
3 * Group Policy Object Support
4 * Copyright (C) Guenther Deschner 2005
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 2 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, write to the Free Software
18 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25 /****************************************************************
26 parse the raw extension string into a GP_EXT structure
27 ****************************************************************/
29 ADS_STATUS ads_parse_gp_ext(TALLOC_CTX *mem_ctx,
30 const char *extension_raw,
31 struct GP_EXT *gp_ext)
34 char **ext_strings = NULL;
37 DEBUG(20,("ads_parse_gp_ext: %s\n", extension_raw));
39 ext_list = str_list_make_talloc(mem_ctx, extension_raw, "]");
40 if (ext_list == NULL) {
44 for (i = 0; ext_list[i] != NULL; i++) {
50 if (gp_ext->num_exts) {
51 gp_ext->extensions = TALLOC_ZERO_ARRAY(mem_ctx, char *, gp_ext->num_exts);
52 gp_ext->extensions_guid = TALLOC_ZERO_ARRAY(mem_ctx, char *, gp_ext->num_exts);
53 gp_ext->snapins = TALLOC_ZERO_ARRAY(mem_ctx, char *, gp_ext->num_exts);
54 gp_ext->snapins_guid = TALLOC_ZERO_ARRAY(mem_ctx, char *, gp_ext->num_exts);
56 gp_ext->extensions = NULL;
57 gp_ext->extensions_guid = NULL;
58 gp_ext->snapins = NULL;
59 gp_ext->snapins_guid = NULL;
62 if (gp_ext->extensions == NULL || gp_ext->extensions_guid == NULL ||
63 gp_ext->snapins == NULL || gp_ext->snapins_guid == NULL ||
64 gp_ext->gp_extension == NULL) {
68 gp_ext->gp_extension = talloc_strdup(mem_ctx, extension_raw);
70 for (i = 0; ext_list[i] != NULL; i++) {
75 DEBUGADD(10,("extension #%d\n", i));
83 ext_strings = str_list_make_talloc(mem_ctx, p, "}");
84 if (ext_strings == NULL) {
88 for (k = 0; ext_strings[k] != NULL; k++) {
98 gp_ext->extensions[i] = talloc_strdup(mem_ctx, cse_gpo_guid_string_to_name(q));
99 gp_ext->extensions_guid[i] = talloc_strdup(mem_ctx, q);
101 /* we might have no name for the guid */
102 if (gp_ext->extensions_guid[i] == NULL) {
106 for (k = 1; ext_strings[k] != NULL; k++) {
108 char *m = ext_strings[k];
114 /* FIXME: theoretically there could be more than one snapin per extension */
115 gp_ext->snapins[i] = talloc_strdup(mem_ctx, cse_snapin_gpo_guid_string_to_name(m));
116 gp_ext->snapins_guid[i] = talloc_strdup(mem_ctx, m);
118 /* we might have no name for the guid */
119 if (gp_ext->snapins_guid[i] == NULL) {
126 str_list_free_talloc(mem_ctx, &ext_list);
129 str_list_free_talloc(mem_ctx, &ext_strings);
132 return ADS_ERROR(LDAP_SUCCESS);
136 str_list_free_talloc(mem_ctx, &ext_list);
139 str_list_free_talloc(mem_ctx, &ext_strings);
142 return ADS_ERROR(LDAP_NO_MEMORY);
145 /****************************************************************
146 parse the raw link string into a GP_LINK structure
147 ****************************************************************/
149 ADS_STATUS ads_parse_gplink(TALLOC_CTX *mem_ctx,
150 const char *gp_link_raw,
152 struct GP_LINK *gp_link)
157 DEBUG(10,("ads_parse_gplink: gPLink: %s\n", gp_link_raw));
159 link_list = str_list_make_talloc(mem_ctx, gp_link_raw, "]");
160 if (link_list == NULL) {
164 for (i = 0; link_list[i] != NULL; i++) {
168 gp_link->gp_opts = options;
169 gp_link->num_links = i;
171 if (gp_link->num_links) {
172 gp_link->link_names = TALLOC_ZERO_ARRAY(mem_ctx, char *, gp_link->num_links);
173 gp_link->link_opts = TALLOC_ZERO_ARRAY(mem_ctx, uint32, gp_link->num_links);
175 gp_link->link_names = NULL;
176 gp_link->link_opts = NULL;
179 gp_link->gp_link = talloc_strdup(mem_ctx, gp_link_raw);
181 if (gp_link->link_names == NULL || gp_link->link_opts == NULL || gp_link->gp_link == NULL) {
185 for (i = 0; link_list[i] != NULL; i++) {
189 DEBUGADD(10,("ads_parse_gplink: processing link #%d\n", i));
202 gp_link->link_names[i] = talloc_strdup(mem_ctx, q);
203 if (gp_link->link_names[i] == NULL) {
206 gp_link->link_names[i][PTR_DIFF(p, q)] = 0;
208 gp_link->link_opts[i] = atoi(p + 1);
210 DEBUGADD(10,("ads_parse_gplink: link: %s\n", gp_link->link_names[i]));
211 DEBUGADD(10,("ads_parse_gplink: opt: %d\n", gp_link->link_opts[i]));
216 str_list_free_talloc(mem_ctx, &link_list);
219 return ADS_ERROR(LDAP_SUCCESS);
223 str_list_free_talloc(mem_ctx, &link_list);
226 return ADS_ERROR(LDAP_NO_MEMORY);
229 /****************************************************************
230 helper call to get a GP_LINK structure from a linkdn
231 ****************************************************************/
233 ADS_STATUS ads_get_gpo_link(ADS_STRUCT *ads,
236 struct GP_LINK *gp_link_struct)
239 const char *attrs[] = {"gPLink", "gPOptions", NULL};
240 LDAPMessage *res = NULL;
244 ZERO_STRUCTP(gp_link_struct);
246 status = ads_search_dn(ads, &res, link_dn, attrs);
247 if (!ADS_ERR_OK(status)) {
248 DEBUG(10,("ads_get_gpo_link: search failed with %s\n", ads_errstr(status)));
252 if (ads_count_replies(ads, res) != 1) {
253 DEBUG(10,("ads_get_gpo_link: no result\n"));
254 ads_msgfree(ads, res);
255 return ADS_ERROR(LDAP_NO_SUCH_OBJECT);
258 gp_link = ads_pull_string(ads, mem_ctx, res, "gPLink");
259 if (gp_link == NULL) {
260 DEBUG(10,("ads_get_gpo_link: no 'gPLink' attribute found\n"));
261 ads_msgfree(ads, res);
262 return ADS_ERROR(LDAP_NO_SUCH_ATTRIBUTE);
265 /* perfectly leggal to have no options */
266 if (!ads_pull_uint32(ads, res, "gPOptions", &gp_options)) {
267 DEBUG(10,("ads_get_gpo_link: no 'gPOptions' attribute found\n"));
271 ads_msgfree(ads, res);
273 return ads_parse_gplink(mem_ctx, gp_link, gp_options, gp_link_struct);
276 /****************************************************************
277 helper call to add a gp link
278 ****************************************************************/
280 ADS_STATUS ads_add_gpo_link(ADS_STRUCT *ads,
287 const char *attrs[] = {"gPLink", NULL};
288 LDAPMessage *res = NULL;
289 const char *gp_link, *gp_link_new;
292 /* although ADS allows to set anything here, we better check here if
293 * the gpo_dn is sane */
295 if (!strnequal(gpo_dn, "LDAP://CN={", strlen("LDAP://CN={")) != 0) {
296 return ADS_ERROR(LDAP_INVALID_DN_SYNTAX);
299 status = ads_search_dn(ads, &res, link_dn, attrs);
300 if (!ADS_ERR_OK(status)) {
301 DEBUG(10,("ads_add_gpo_link: search failed with %s\n", ads_errstr(status)));
305 if (ads_count_replies(ads, res) != 1) {
306 DEBUG(10,("ads_add_gpo_link: no result\n"));
307 ads_msgfree(ads, res);
308 return ADS_ERROR(LDAP_NO_SUCH_OBJECT);
311 gp_link = ads_pull_string(ads, mem_ctx, res, "gPLink");
312 if (gp_link == NULL) {
313 gp_link_new = talloc_asprintf(mem_ctx, "[%s;%d]", gpo_dn, gpo_opt);
315 gp_link_new = talloc_asprintf(mem_ctx, "%s[%s;%d]", gp_link, gpo_dn, gpo_opt);
318 ads_msgfree(ads, res);
319 ADS_ERROR_HAVE_NO_MEMORY(gp_link_new);
321 mods = ads_init_mods(mem_ctx);
322 ADS_ERROR_HAVE_NO_MEMORY(mods);
324 status = ads_mod_str(mem_ctx, &mods, "gPLink", gp_link_new);
325 if (!ADS_ERR_OK(status)) {
329 return ads_gen_mod(ads, link_dn, mods);
332 /****************************************************************
333 helper call to delete add a gp link
334 ****************************************************************/
336 /* untested & broken */
337 ADS_STATUS ads_delete_gpo_link(ADS_STRUCT *ads,
343 const char *attrs[] = {"gPLink", NULL};
344 LDAPMessage *res = NULL;
345 const char *gp_link, *gp_link_new = NULL;
348 /* check for a sane gpo_dn */
349 if (gpo_dn[0] != '[') {
350 DEBUG(10,("ads_delete_gpo_link: first char not: [\n"));
351 return ADS_ERROR(LDAP_INVALID_DN_SYNTAX);
354 if (gpo_dn[strlen(gpo_dn)] != ']') {
355 DEBUG(10,("ads_delete_gpo_link: last char not: ]\n"));
356 return ADS_ERROR(LDAP_INVALID_DN_SYNTAX);
359 status = ads_search_dn(ads, &res, link_dn, attrs);
360 if (!ADS_ERR_OK(status)) {
361 DEBUG(10,("ads_delete_gpo_link: search failed with %s\n", ads_errstr(status)));
365 if (ads_count_replies(ads, res) != 1) {
366 DEBUG(10,("ads_delete_gpo_link: no result\n"));
367 ads_msgfree(ads, res);
368 return ADS_ERROR(LDAP_NO_SUCH_OBJECT);
371 gp_link = ads_pull_string(ads, mem_ctx, res, "gPLink");
372 if (gp_link == NULL) {
373 return ADS_ERROR(LDAP_NO_SUCH_ATTRIBUTE);
376 /* find link to delete */
377 /* gp_link_new = talloc_asprintf(mem_ctx, "%s[%s;%d]", gp_link, gpo_dn, gpo_opt); */
379 ads_msgfree(ads, res);
380 ADS_ERROR_HAVE_NO_MEMORY(gp_link_new);
382 mods = ads_init_mods(mem_ctx);
383 ADS_ERROR_HAVE_NO_MEMORY(mods);
385 status = ads_mod_str(mem_ctx, &mods, "gPLink", gp_link_new);
386 if (!ADS_ERR_OK(status)) {
390 return ads_gen_mod(ads, link_dn, mods);
393 /****************************************************************
394 parse a GROUP_POLICY_OBJECT structure from an LDAPMessage result
395 ****************************************************************/
397 ADS_STATUS ads_parse_gpo(ADS_STRUCT *ads,
401 struct GROUP_POLICY_OBJECT *gpo)
405 ADS_ERROR_HAVE_NO_MEMORY(res);
408 gpo->ds_path = talloc_strdup(mem_ctx, gpo_dn);
410 gpo->ds_path = ads_get_dn(ads, res);
413 ADS_ERROR_HAVE_NO_MEMORY(gpo->ds_path);
415 if (!ads_pull_uint32(ads, res, "versionNumber", &gpo->version)) {
416 return ADS_ERROR(LDAP_NO_MEMORY);
420 if (!ads_pull_uint32(ads, res, "flags", &gpo->options)) {
421 return ADS_ERROR(LDAP_NO_MEMORY);
424 gpo->file_sys_path = ads_pull_string(ads, mem_ctx, res, "gPCFileSysPath");
425 ADS_ERROR_HAVE_NO_MEMORY(gpo->file_sys_path);
427 gpo->display_name = ads_pull_string(ads, mem_ctx, res, "displayName");
428 ADS_ERROR_HAVE_NO_MEMORY(gpo->display_name);
430 gpo->name = ads_pull_string(ads, mem_ctx, res, "name");
431 ADS_ERROR_HAVE_NO_MEMORY(gpo->name);
433 /* ???, this is optional to have and what does it depend on, the 'flags' ?) */
434 gpo->machine_extensions = ads_pull_string(ads, mem_ctx, res, "gPCMachineExtensionNames");
435 gpo->user_extensions = ads_pull_string(ads, mem_ctx, res, "gPCUserExtensionNames");
437 ads_pull_sd(ads, mem_ctx, res, "ntSecurityDescriptor", &gpo->security_descriptor);
438 ADS_ERROR_HAVE_NO_MEMORY(gpo->security_descriptor);
440 return ADS_ERROR(LDAP_SUCCESS);
443 /****************************************************************
444 get a GROUP_POLICY_OBJECT structure based on different input paramters
445 ****************************************************************/
447 ADS_STATUS ads_get_gpo(ADS_STRUCT *ads,
450 const char *display_name,
451 const char *guid_name,
452 struct GROUP_POLICY_OBJECT *gpo)
455 LDAPMessage *res = NULL;
458 const char *attrs[] = { "cn", "displayName", "flags", "gPCFileSysPath",
459 "gPCFunctionalityVersion", "gPCMachineExtensionNames",
460 "gPCUserExtensionNames", "gPCWQLFilter", "name",
461 "versionNumber", "ntSecurityDescriptor", NULL};
462 uint32 sd_flags = DACL_SECURITY_INFORMATION;
466 if (!gpo_dn && !display_name && !guid_name) {
467 return ADS_ERROR(LDAP_NO_SUCH_OBJECT);
472 if (strnequal(gpo_dn, "LDAP://", strlen("LDAP://")) != 0) {
473 gpo_dn = gpo_dn + strlen("LDAP://");
476 status = ads_search_retry_dn_sd_flags(ads, &res,
480 } else if (display_name || guid_name) {
482 filter = talloc_asprintf(mem_ctx,
483 "(&(objectclass=groupPolicyContainer)(%s=%s))",
484 display_name ? "displayName" : "name",
485 display_name ? display_name : guid_name);
486 ADS_ERROR_HAVE_NO_MEMORY(filter);
488 status = ads_do_search_all_sd_flags(ads, ads->config.bind_path,
489 LDAP_SCOPE_SUBTREE, filter,
490 attrs, sd_flags, &res);
493 if (!ADS_ERR_OK(status)) {
494 DEBUG(10,("ads_get_gpo: search failed with %s\n", ads_errstr(status)));
498 if (ads_count_replies(ads, res) != 1) {
499 DEBUG(10,("ads_get_gpo: no result\n"));
500 ads_msgfree(ads, res);
501 return ADS_ERROR(LDAP_NO_SUCH_OBJECT);
504 dn = ads_get_dn(ads, res);
506 ads_msgfree(ads, res);
507 return ADS_ERROR(LDAP_NO_MEMORY);
510 status = ads_parse_gpo(ads, mem_ctx, res, dn, gpo);
511 ads_msgfree(ads, res);
512 ads_memfree(ads, dn);
517 /****************************************************************
518 add a gplink to the GROUP_POLICY_OBJECT linked list
519 ****************************************************************/
521 ADS_STATUS add_gplink_to_gpo_list(ADS_STRUCT *ads,
523 struct GROUP_POLICY_OBJECT **gpo_list,
525 struct GP_LINK *gp_link,
526 enum GPO_LINK_TYPE link_type,
527 BOOL only_add_forced_gpos,
528 struct GPO_SID_TOKEN *token)
533 for (i = 0; i < gp_link->num_links; i++) {
535 struct GROUP_POLICY_OBJECT *new_gpo = NULL;
537 if (gp_link->link_opts[i] & GPO_LINK_OPT_DISABLED) {
538 DEBUG(10,("skipping disabled GPO\n"));
542 if (only_add_forced_gpos) {
544 if (! (gp_link->link_opts[i] & GPO_LINK_OPT_ENFORCED)) {
545 DEBUG(10,("skipping nonenforced GPO link because GPOPTIONS_BLOCK_INHERITANCE has been set\n"));
548 DEBUG(10,("adding enforced GPO link although the GPOPTIONS_BLOCK_INHERITANCE has been set\n"));
552 new_gpo = TALLOC_ZERO_P(mem_ctx, struct GROUP_POLICY_OBJECT);
553 ADS_ERROR_HAVE_NO_MEMORY(new_gpo);
555 status = ads_get_gpo(ads, mem_ctx, gp_link->link_names[i], NULL, NULL, new_gpo);
556 if (!ADS_ERR_OK(status)) {
557 DEBUG(10,("failed to get gpo: %s\n", gp_link->link_names[i]));
561 status = ADS_ERROR_NT(gpo_apply_security_filtering(new_gpo, token));
562 if (!ADS_ERR_OK(status)) {
563 DEBUG(10,("skipping GPO \"%s\" as object has no access to it\n",
564 new_gpo->display_name));
565 TALLOC_FREE(new_gpo);
569 new_gpo->link = link_dn;
570 new_gpo->link_type = link_type;
572 DLIST_ADD(*gpo_list, new_gpo);
574 DEBUG(10,("add_gplink_to_gplist: added GPLINK #%d %s to GPO list\n",
575 i, gp_link->link_names[i]));
578 return ADS_ERROR(LDAP_SUCCESS);
581 /****************************************************************
582 ****************************************************************/
584 ADS_STATUS ads_get_gpo_sid_token(ADS_STRUCT *ads,
587 struct GPO_SID_TOKEN **token)
591 DOM_SID primary_group_sid;
592 DOM_SID *ad_token_sids;
593 size_t num_ad_token_sids = 0;
595 size_t num_token_sids = 0;
596 struct GPO_SID_TOKEN *new_token = NULL;
599 new_token = TALLOC_ZERO_P(mem_ctx, struct GPO_SID_TOKEN);
600 ADS_ERROR_HAVE_NO_MEMORY(new_token);
602 status = ads_get_tokensids(ads, mem_ctx, dn,
603 &object_sid, &primary_group_sid,
604 &ad_token_sids, &num_ad_token_sids);
605 if (!ADS_ERR_OK(status)) {
609 new_token->object_sid = object_sid;
610 new_token->primary_group_sid = primary_group_sid;
612 token_sids = TALLOC_ARRAY(mem_ctx, DOM_SID, 1);
613 ADS_ERROR_HAVE_NO_MEMORY(token_sids);
615 for (i = 0; i < num_ad_token_sids; i++) {
617 if (sid_check_is_in_builtin(&ad_token_sids[i])) {
621 if (!add_sid_to_array_unique(mem_ctx, &ad_token_sids[i],
622 &token_sids, &num_token_sids)) {
623 return ADS_ERROR(LDAP_NO_MEMORY);
627 /* Add S-1-5-11 to token */
628 if (!add_sid_to_array_unique(mem_ctx, &global_sid_Authenticated_Users,
629 &token_sids, &num_token_sids)) {
630 return ADS_ERROR(LDAP_NO_MEMORY);
634 new_token->token_sids = token_sids;
635 new_token->num_token_sids = num_token_sids;
639 return ADS_ERROR_LDAP(LDAP_SUCCESS);
643 /****************************************************************
644 get the full list of GROUP_POLICY_OBJECTs for a given dn
645 ****************************************************************/
647 ADS_STATUS ads_get_gpo_list(ADS_STRUCT *ads,
651 struct GROUP_POLICY_OBJECT **gpo_list)
653 /* (L)ocal (S)ite (D)omain (O)rganizational(U)nit */
656 struct GP_LINK gp_link;
657 struct GPO_SID_TOKEN *token = NULL;
658 const char *parent_dn, *site_dn, *tmp_dn;
659 BOOL add_only_forced_gpos = False;
661 ZERO_STRUCTP(gpo_list);
663 DEBUG(10,("ads_get_gpo_list: getting GPO list for [%s]\n", dn));
665 status = ads_get_gpo_sid_token(ads, mem_ctx, dn, &token);
666 if (!ADS_ERR_OK(status)) {
675 /* are site GPOs valid for users as well ??? */
676 if (flags & GPO_LIST_FLAG_MACHINE) {
678 status = ads_site_dn_for_machine(ads, mem_ctx, ads->config.ldap_server_name, &site_dn);
679 if (!ADS_ERR_OK(status)) {
683 DEBUG(10,("ads_get_gpo_list: query SITE: [%s] for GPOs\n", site_dn));
685 status = ads_get_gpo_link(ads, mem_ctx, site_dn, &gp_link);
686 if (ADS_ERR_OK(status)) {
688 if (DEBUGLEVEL >= 100) {
689 dump_gplink(ads, mem_ctx, &gp_link);
692 status = add_gplink_to_gpo_list(ads, mem_ctx, gpo_list,
693 site_dn, &gp_link, GP_LINK_SITE,
694 add_only_forced_gpos,
696 if (!ADS_ERR_OK(status)) {
700 if (flags & GPO_LIST_FLAG_SITEONLY) {
701 return ADS_ERROR(LDAP_SUCCESS);
704 /* inheritance can't be blocked at the site level */
710 while ( (parent_dn = ads_parent_dn(tmp_dn)) &&
711 (!strequal(parent_dn, ads_parent_dn(ads->config.bind_path))) ) {
715 /* An account can just be a member of one domain */
716 if (strncmp(parent_dn, "DC=", strlen("DC=")) == 0) {
718 DEBUG(10,("ads_get_gpo_list: query DC: [%s] for GPOs\n", parent_dn));
720 status = ads_get_gpo_link(ads, mem_ctx, parent_dn, &gp_link);
721 if (ADS_ERR_OK(status)) {
723 if (DEBUGLEVEL >= 100) {
724 dump_gplink(ads, mem_ctx, &gp_link);
727 /* block inheritance from now on */
728 if (gp_link.gp_opts & GPOPTIONS_BLOCK_INHERITANCE) {
729 add_only_forced_gpos = True;
732 status = add_gplink_to_gpo_list(ads, mem_ctx,
734 &gp_link, GP_LINK_DOMAIN,
735 add_only_forced_gpos,
737 if (!ADS_ERR_OK(status)) {
749 while ( (parent_dn = ads_parent_dn(tmp_dn)) &&
750 (!strequal(parent_dn, ads_parent_dn(ads->config.bind_path))) ) {
753 /* (O)rganizational(U)nit */
755 /* An account can be a member of more OUs */
756 if (strncmp(parent_dn, "OU=", strlen("OU=")) == 0) {
758 DEBUG(10,("ads_get_gpo_list: query OU: [%s] for GPOs\n", parent_dn));
760 status = ads_get_gpo_link(ads, mem_ctx, parent_dn, &gp_link);
761 if (ADS_ERR_OK(status)) {
763 if (DEBUGLEVEL >= 100) {
764 dump_gplink(ads, mem_ctx, &gp_link);
767 /* block inheritance from now on */
768 if (gp_link.gp_opts & GPOPTIONS_BLOCK_INHERITANCE) {
769 add_only_forced_gpos = True;
772 status = add_gplink_to_gpo_list(ads, mem_ctx,
774 &gp_link, GP_LINK_OU,
775 add_only_forced_gpos,
777 if (!ADS_ERR_OK(status)) {
787 return ADS_ERROR(LDAP_SUCCESS);
790 #endif /* HAVE_LDAP */