2 Unix SMB/CIFS implementation.
6 Copyright (C) Tim Potter 2000
7 Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2003
8 Copyright (C) Gerald Carter 2003
9 Copyright (C) Simo Sorce 2003-2007
10 Copyright (C) Michael Adam 2010
12 This program is free software; you can redistribute it and/or modify
13 it under the terms of the GNU General Public License as published by
14 the Free Software Foundation; either version 3 of the License, or
15 (at your option) any later version.
17 This program is distributed in the hope that it will be useful,
18 but WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 GNU General Public License for more details.
22 You should have received a copy of the GNU General Public License
23 along with this program. If not, see <http://www.gnu.org/licenses/>.
31 #include "../libcli/security/security.h"
34 #define DBGC_CLASS DBGC_IDMAP
41 static char *idmap_fetch_secret(const char *backend, bool alloc,
42 const char *domain, const char *identity)
48 r = asprintf(&tmp, "IDMAP_ALLOC_%s", backend);
50 r = asprintf(&tmp, "IDMAP_%s_%s", backend, domain);
56 strupper_m(tmp); /* make sure the key is case insensitive */
57 ret = secrets_fetch_generic(tmp, identity);
64 struct idmap_ldap_alloc_context {
65 struct smbldap_state *smbldap_state;
71 struct idmap_ldap_context {
72 struct smbldap_state *smbldap_state;
77 struct idmap_ldap_alloc_context *alloc;
78 struct idmap_rw_ops *rw_ops;
81 #define CHECK_ALLOC_DONE(mem) do { \
83 DEBUG(0, ("Out of memory!\n")); \
84 ret = NT_STATUS_NO_MEMORY; \
88 /**********************************************************************
89 IDMAP ALLOC TDB BACKEND
90 **********************************************************************/
92 /*********************************************************************
93 ********************************************************************/
95 static NTSTATUS get_credentials( TALLOC_CTX *mem_ctx,
96 struct smbldap_state *ldap_state,
97 const char *config_option,
98 struct idmap_domain *dom,
101 NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
103 const char *tmp = NULL;
104 char *user_dn = NULL;
107 /* assume anonymous if we don't have a specified user */
109 tmp = lp_parm_const_string(-1, config_option, "ldap_user_dn", NULL);
113 /* only the alloc backend can pass in a NULL dom */
114 secret = idmap_fetch_secret("ldap", True,
117 secret = idmap_fetch_secret("ldap", False,
122 DEBUG(0, ("get_credentials: Unable to fetch "
123 "auth credentials for %s in %s\n",
124 tmp, (dom==NULL)?"ALLOC":dom->name));
125 ret = NT_STATUS_ACCESS_DENIED;
128 *dn = talloc_strdup(mem_ctx, tmp);
129 CHECK_ALLOC_DONE(*dn);
131 if (!fetch_ldap_pw(&user_dn, &secret)) {
132 DEBUG(2, ("get_credentials: Failed to lookup ldap "
133 "bind creds. Using anonymous connection.\n"));
137 *dn = talloc_strdup(mem_ctx, user_dn);
138 SAFE_FREE( user_dn );
139 CHECK_ALLOC_DONE(*dn);
143 smbldap_set_creds(ldap_state, anon, *dn, secret);
153 /**********************************************************************
154 Verify the sambaUnixIdPool entry in the directory.
155 **********************************************************************/
157 static NTSTATUS verify_idpool(struct idmap_domain *dom)
161 LDAPMessage *result = NULL;
162 LDAPMod **mods = NULL;
163 const char **attr_list;
167 struct idmap_ldap_context *ctx;
169 ctx = talloc_get_type(dom->private_data, struct idmap_ldap_context);
171 mem_ctx = talloc_new(ctx);
172 if (mem_ctx == NULL) {
173 DEBUG(0, ("Out of memory!\n"));
174 return NT_STATUS_NO_MEMORY;
177 filter = talloc_asprintf(mem_ctx, "(objectclass=%s)", LDAP_OBJ_IDPOOL);
178 CHECK_ALLOC_DONE(filter);
180 attr_list = get_attr_list(mem_ctx, idpool_attr_list);
181 CHECK_ALLOC_DONE(attr_list);
183 rc = smbldap_search(ctx->smbldap_state,
191 if (rc != LDAP_SUCCESS) {
192 DEBUG(1, ("Unable to verify the idpool, "
193 "cannot continue initialization!\n"));
194 return NT_STATUS_UNSUCCESSFUL;
197 count = ldap_count_entries(ctx->smbldap_state->ldap_struct, result);
199 ldap_msgfree(result);
202 DEBUG(0,("Multiple entries returned from %s (base == %s)\n",
203 filter, ctx->suffix));
204 ret = NT_STATUS_UNSUCCESSFUL;
207 else if (count == 0) {
208 char *uid_str, *gid_str;
210 uid_str = talloc_asprintf(mem_ctx, "%lu",
211 (unsigned long)dom->low_id);
212 gid_str = talloc_asprintf(mem_ctx, "%lu",
213 (unsigned long)dom->low_id);
215 smbldap_set_mod(&mods, LDAP_MOD_ADD,
216 "objectClass", LDAP_OBJ_IDPOOL);
217 smbldap_set_mod(&mods, LDAP_MOD_ADD,
218 get_attr_key2string(idpool_attr_list,
219 LDAP_ATTR_UIDNUMBER),
221 smbldap_set_mod(&mods, LDAP_MOD_ADD,
222 get_attr_key2string(idpool_attr_list,
223 LDAP_ATTR_GIDNUMBER),
226 rc = smbldap_modify(ctx->smbldap_state,
229 ldap_mods_free(mods, True);
231 ret = NT_STATUS_UNSUCCESSFUL;
236 ret = (rc == LDAP_SUCCESS)?NT_STATUS_OK:NT_STATUS_UNSUCCESSFUL;
238 talloc_free(mem_ctx);
242 /*****************************************************************************
243 Initialise idmap database.
244 *****************************************************************************/
246 static int idmap_ldap_alloc_close_destructor(struct idmap_ldap_alloc_context *ctx)
248 smbldap_free_struct(&ctx->smbldap_state);
249 DEBUG(5,("The connection to the LDAP server was closed\n"));
250 /* maybe free the results here --metze */
254 /********************************
255 Allocate a new uid or gid
256 ********************************/
258 static NTSTATUS idmap_ldap_allocate_id(struct idmap_domain *dom,
262 NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
263 int rc = LDAP_SERVER_DOWN;
265 LDAPMessage *result = NULL;
266 LDAPMessage *entry = NULL;
267 LDAPMod **mods = NULL;
271 const char *dn = NULL;
272 const char **attr_list;
274 struct idmap_ldap_context *ctx;
276 /* Only do query if we are online */
277 if (idmap_is_offline()) {
278 return NT_STATUS_FILE_IS_OFFLINE;
281 ctx = talloc_get_type(dom->private_data, struct idmap_ldap_context);
284 return NT_STATUS_UNSUCCESSFUL;
287 mem_ctx = talloc_new(ctx->alloc);
289 DEBUG(0, ("Out of memory!\n"));
290 return NT_STATUS_NO_MEMORY;
297 type = get_attr_key2string(idpool_attr_list,
298 LDAP_ATTR_UIDNUMBER);
302 type = get_attr_key2string(idpool_attr_list,
303 LDAP_ATTR_GIDNUMBER);
307 DEBUG(2, ("Invalid ID type (0x%x)\n", xid->type));
308 return NT_STATUS_INVALID_PARAMETER;
311 filter = talloc_asprintf(mem_ctx, "(objectClass=%s)", LDAP_OBJ_IDPOOL);
312 CHECK_ALLOC_DONE(filter);
314 attr_list = get_attr_list(mem_ctx, idpool_attr_list);
315 CHECK_ALLOC_DONE(attr_list);
317 DEBUG(10, ("Search of the id pool (filter: %s)\n", filter));
319 rc = smbldap_search(ctx->alloc->smbldap_state,
321 LDAP_SCOPE_SUBTREE, filter,
322 attr_list, 0, &result);
324 if (rc != LDAP_SUCCESS) {
325 DEBUG(0,("%s object not found\n", LDAP_OBJ_IDPOOL));
329 talloc_autofree_ldapmsg(mem_ctx, result);
331 count = ldap_count_entries(ctx->alloc->smbldap_state->ldap_struct,
334 DEBUG(0,("Single %s object not found\n", LDAP_OBJ_IDPOOL));
338 entry = ldap_first_entry(ctx->alloc->smbldap_state->ldap_struct,
341 dn = smbldap_talloc_dn(mem_ctx,
342 ctx->alloc->smbldap_state->ldap_struct,
348 id_str = smbldap_talloc_single_attribute(
349 ctx->alloc->smbldap_state->ldap_struct,
350 entry, type, mem_ctx);
351 if (id_str == NULL) {
352 DEBUG(0,("%s attribute not found\n", type));
353 ret = NT_STATUS_UNSUCCESSFUL;
357 xid->id = strtoul(id_str, NULL, 10);
359 /* make sure we still have room to grow */
363 if (xid->id > dom->high_id) {
364 DEBUG(0,("Cannot allocate uid above %lu!\n",
365 (unsigned long)dom->high_id));
371 if (xid->id > dom->high_id) {
372 DEBUG(0,("Cannot allocate gid above %lu!\n",
373 (unsigned long)dom->high_id));
383 new_id_str = talloc_asprintf(mem_ctx, "%lu", (unsigned long)xid->id + 1);
385 DEBUG(0,("Out of memory\n"));
386 ret = NT_STATUS_NO_MEMORY;
390 smbldap_set_mod(&mods, LDAP_MOD_DELETE, type, id_str);
391 smbldap_set_mod(&mods, LDAP_MOD_ADD, type, new_id_str);
394 DEBUG(0,("smbldap_set_mod() failed.\n"));
398 DEBUG(10, ("Try to atomically increment the id (%s -> %s)\n",
399 id_str, new_id_str));
401 rc = smbldap_modify(ctx->alloc->smbldap_state, dn, mods);
403 ldap_mods_free(mods, True);
405 if (rc != LDAP_SUCCESS) {
406 DEBUG(1,("Failed to allocate new %s. "
407 "smbldap_modify() failed.\n", type));
414 talloc_free(mem_ctx);
419 * Allocate a new unix-ID.
420 * For now this is for the default idmap domain only.
421 * Should be extended later on.
423 static NTSTATUS idmap_ldap_get_new_id(struct idmap_domain *dom,
428 if (!strequal(dom->name, "*")) {
429 DEBUG(3, ("idmap_ldap_get_new_id: "
430 "Refusing allocation of a new unixid for domain'%s'. "
431 "Currently only supported for the default "
434 return NT_STATUS_NOT_IMPLEMENTED;
437 ret = idmap_ldap_allocate_id(dom, id);
443 /**********************************************************************
444 IDMAP MAPPING LDAP BACKEND
445 **********************************************************************/
447 static int idmap_ldap_close_destructor(struct idmap_ldap_context *ctx)
449 smbldap_free_struct(&ctx->smbldap_state);
450 DEBUG(5,("The connection to the LDAP server was closed\n"));
451 /* maybe free the results here --metze */
456 /********************************
457 Initialise idmap database.
458 ********************************/
460 static NTSTATUS idmap_ldap_set_mapping(struct idmap_domain *dom,
461 const struct id_map *map);
463 static NTSTATUS idmap_ldap_db_init(struct idmap_domain *dom,
467 struct idmap_ldap_context *ctx = NULL;
468 char *config_option = NULL;
469 const char *tmp = NULL;
471 /* Only do init if we are online */
472 if (idmap_is_offline()) {
473 return NT_STATUS_FILE_IS_OFFLINE;
476 ctx = TALLOC_ZERO_P(dom, struct idmap_ldap_context);
478 DEBUG(0, ("Out of memory!\n"));
479 return NT_STATUS_NO_MEMORY;
482 if (strequal(dom->name, "*")) {
483 /* more specific configuration can go here */
485 config_option = talloc_asprintf(ctx, "idmap config %s", dom->name);
486 if ( ! config_option) {
487 DEBUG(0, ("Out of memory!\n"));
488 ret = NT_STATUS_NO_MEMORY;
493 if (params != NULL) {
494 /* assume location is the only parameter */
495 ctx->url = talloc_strdup(ctx, params);
497 tmp = lp_parm_const_string(-1, config_option, "ldap_url", NULL);
500 DEBUG(1, ("ERROR: missing idmap ldap url\n"));
501 ret = NT_STATUS_UNSUCCESSFUL;
505 ctx->url = talloc_strdup(ctx, tmp);
507 CHECK_ALLOC_DONE(ctx->url);
509 trim_char(ctx->url, '\"', '\"');
511 tmp = lp_parm_const_string(-1, config_option, "ldap_base_dn", NULL);
512 if ( ! tmp || ! *tmp) {
513 tmp = lp_ldap_idmap_suffix();
515 DEBUG(1, ("ERROR: missing idmap ldap suffix\n"));
516 ret = NT_STATUS_UNSUCCESSFUL;
521 ctx->suffix = talloc_strdup(ctx, tmp);
522 CHECK_ALLOC_DONE(ctx->suffix);
524 ctx->rw_ops = talloc_zero(ctx, struct idmap_rw_ops);
525 CHECK_ALLOC_DONE(ctx->rw_ops);
527 ctx->rw_ops->get_new_id = idmap_ldap_get_new_id;
528 ctx->rw_ops->set_mapping = idmap_ldap_set_mapping;
530 ret = smbldap_init(ctx, winbind_event_context(), ctx->url,
531 &ctx->smbldap_state);
532 if (!NT_STATUS_IS_OK(ret)) {
533 DEBUG(1, ("ERROR: smbldap_init (%s) failed!\n", ctx->url));
537 ret = get_credentials( ctx, ctx->smbldap_state, config_option,
538 dom, &ctx->user_dn );
539 if ( !NT_STATUS_IS_OK(ret) ) {
540 DEBUG(1,("idmap_ldap_db_init: Failed to get connection "
541 "credentials (%s)\n", nt_errstr(ret)));
545 /* set the destructor on the context, so that resource are properly
546 freed if the contexts is released */
548 talloc_set_destructor(ctx, idmap_ldap_close_destructor);
550 dom->private_data = ctx;
552 ret = verify_idpool(dom);
553 if (!NT_STATUS_IS_OK(ret)) {
554 DEBUG(1, ("idmap_ldap_db_init: failed to verify ID pool (%s)\n",
559 talloc_free(config_option);
572 /* TODO: change this: This function cannot be called to modify a mapping,
573 * only set a new one */
575 static NTSTATUS idmap_ldap_set_mapping(struct idmap_domain *dom,
576 const struct id_map *map)
580 struct idmap_ldap_context *ctx;
581 LDAPMessage *entry = NULL;
582 LDAPMod **mods = NULL;
589 /* Only do query if we are online */
590 if (idmap_is_offline()) {
591 return NT_STATUS_FILE_IS_OFFLINE;
594 ctx = talloc_get_type(dom->private_data, struct idmap_ldap_context);
596 switch(map->xid.type) {
598 type = get_attr_key2string(sidmap_attr_list,
599 LDAP_ATTR_UIDNUMBER);
603 type = get_attr_key2string(sidmap_attr_list,
604 LDAP_ATTR_GIDNUMBER);
608 return NT_STATUS_INVALID_PARAMETER;
611 memctx = talloc_new(ctx);
613 DEBUG(0, ("Out of memory!\n"));
614 return NT_STATUS_NO_MEMORY;
617 id_str = talloc_asprintf(memctx, "%lu", (unsigned long)map->xid.id);
618 CHECK_ALLOC_DONE(id_str);
620 sid = talloc_strdup(memctx, sid_string_talloc(memctx, map->sid));
621 CHECK_ALLOC_DONE(sid);
623 dn = talloc_asprintf(memctx, "%s=%s,%s",
624 get_attr_key2string(sidmap_attr_list, LDAP_ATTR_SID),
627 CHECK_ALLOC_DONE(dn);
629 smbldap_set_mod(&mods, LDAP_MOD_ADD,
630 "objectClass", LDAP_OBJ_IDMAP_ENTRY);
632 smbldap_make_mod(ctx->smbldap_state->ldap_struct,
633 entry, &mods, type, id_str);
635 smbldap_make_mod(ctx->smbldap_state->ldap_struct, entry, &mods,
636 get_attr_key2string(sidmap_attr_list, LDAP_ATTR_SID),
640 DEBUG(2, ("ERROR: No mods?\n"));
641 ret = NT_STATUS_UNSUCCESSFUL;
645 /* TODO: remove conflicting mappings! */
647 smbldap_set_mod(&mods, LDAP_MOD_ADD, "objectClass", LDAP_OBJ_SID_ENTRY);
649 DEBUG(10, ("Set DN %s (%s -> %s)\n", dn, sid, id_str));
651 rc = smbldap_add(ctx->smbldap_state, dn, mods);
652 ldap_mods_free(mods, True);
654 if (rc != LDAP_SUCCESS) {
655 char *ld_error = NULL;
656 ldap_get_option(ctx->smbldap_state->ldap_struct,
657 LDAP_OPT_ERROR_STRING, &ld_error);
658 DEBUG(0,("ldap_set_mapping_internals: Failed to add %s to %lu "
659 "mapping [%s]\n", sid,
660 (unsigned long)map->xid.id, type));
661 DEBUG(0, ("ldap_set_mapping_internals: Error was: %s (%s)\n",
662 ld_error ? ld_error : "(NULL)", ldap_err2string (rc)));
664 ldap_memfree(ld_error);
666 ret = NT_STATUS_UNSUCCESSFUL;
670 DEBUG(10,("ldap_set_mapping: Successfully created mapping from %s to "
671 "%lu [%s]\n", sid, (unsigned long)map->xid.id, type));
681 * Create a new mapping for an unmapped SID, also allocating a new ID.
682 * If possible, this should be run inside a transaction to make the
685 static NTSTATUS idmap_ldap_new_mapping(struct idmap_domain *dom, struct id_map *map)
688 struct idmap_ldap_context *ctx;
690 ctx = talloc_get_type(dom->private_data, struct idmap_ldap_context);
692 ret = idmap_rw_new_mapping(dom, ctx->rw_ops, map);
698 /* max number of ids requested per batch query */
699 #define IDMAP_LDAP_MAX_IDS 30
701 /**********************************
702 lookup a set of unix ids.
703 **********************************/
705 /* this function searches up to IDMAP_LDAP_MAX_IDS entries
706 * in maps for a match */
707 static struct id_map *find_map_by_id(struct id_map **maps,
713 for (i = 0; i < IDMAP_LDAP_MAX_IDS; i++) {
714 if (maps[i] == NULL) { /* end of the run */
717 if ((maps[i]->xid.type == type) && (maps[i]->xid.id == id)) {
725 static NTSTATUS idmap_ldap_unixids_to_sids(struct idmap_domain *dom,
730 struct idmap_ldap_context *ctx;
731 LDAPMessage *result = NULL;
732 LDAPMessage *entry = NULL;
733 const char *uidNumber;
734 const char *gidNumber;
735 const char **attr_list;
744 /* Only do query if we are online */
745 if (idmap_is_offline()) {
746 return NT_STATUS_FILE_IS_OFFLINE;
749 ctx = talloc_get_type(dom->private_data, struct idmap_ldap_context);
751 memctx = talloc_new(ctx);
753 DEBUG(0, ("Out of memory!\n"));
754 return NT_STATUS_NO_MEMORY;
757 uidNumber = get_attr_key2string(idpool_attr_list, LDAP_ATTR_UIDNUMBER);
758 gidNumber = get_attr_key2string(idpool_attr_list, LDAP_ATTR_GIDNUMBER);
760 attr_list = get_attr_list(memctx, sidmap_attr_list);
763 /* if we are requested just one mapping use the simple filter */
765 filter = talloc_asprintf(memctx, "(&(objectClass=%s)(%s=%lu))",
766 LDAP_OBJ_IDMAP_ENTRY,
767 (ids[0]->xid.type==ID_TYPE_UID)?uidNumber:gidNumber,
768 (unsigned long)ids[0]->xid.id);
769 CHECK_ALLOC_DONE(filter);
770 DEBUG(10, ("Filter: [%s]\n", filter));
772 /* multiple mappings */
776 for (i = 0; ids[i]; i++) {
777 ids[i]->status = ID_UNKNOWN;
784 filter = talloc_asprintf(memctx,
785 "(&(objectClass=%s)(|",
786 LDAP_OBJ_IDMAP_ENTRY);
787 CHECK_ALLOC_DONE(filter);
790 for (i = 0; (i < IDMAP_LDAP_MAX_IDS) && ids[idx]; i++, idx++) {
791 filter = talloc_asprintf_append_buffer(filter, "(%s=%lu)",
792 (ids[idx]->xid.type==ID_TYPE_UID)?uidNumber:gidNumber,
793 (unsigned long)ids[idx]->xid.id);
794 CHECK_ALLOC_DONE(filter);
796 filter = talloc_asprintf_append_buffer(filter, "))");
797 CHECK_ALLOC_DONE(filter);
798 DEBUG(10, ("Filter: [%s]\n", filter));
804 rc = smbldap_search(ctx->smbldap_state, ctx->suffix, LDAP_SCOPE_SUBTREE,
805 filter, attr_list, 0, &result);
807 if (rc != LDAP_SUCCESS) {
808 DEBUG(3,("Failure looking up ids (%s)\n", ldap_err2string(rc)));
809 ret = NT_STATUS_UNSUCCESSFUL;
813 count = ldap_count_entries(ctx->smbldap_state->ldap_struct, result);
816 DEBUG(10, ("NO SIDs found\n"));
819 for (i = 0; i < count; i++) {
826 if (i == 0) { /* first entry */
827 entry = ldap_first_entry(ctx->smbldap_state->ldap_struct,
829 } else { /* following ones */
830 entry = ldap_next_entry(ctx->smbldap_state->ldap_struct,
834 DEBUG(2, ("ERROR: Unable to fetch ldap entries "
839 /* first check if the SID is present */
840 sidstr = smbldap_talloc_single_attribute(
841 ctx->smbldap_state->ldap_struct,
842 entry, LDAP_ATTRIBUTE_SID, memctx);
843 if ( ! sidstr) { /* no sid, skip entry */
844 DEBUG(2, ("WARNING SID not found on entry\n"));
848 /* now try to see if it is a uid, if not try with a gid
849 * (gid is more common, but in case both uidNumber and
850 * gidNumber are returned the SID is mapped to the uid
853 tmp = smbldap_talloc_single_attribute(
854 ctx->smbldap_state->ldap_struct,
855 entry, uidNumber, memctx);
858 tmp = smbldap_talloc_single_attribute(
859 ctx->smbldap_state->ldap_struct,
860 entry, gidNumber, memctx);
862 if ( ! tmp) { /* wow very strange entry, how did it match ? */
863 DEBUG(5, ("Unprobable match on (%s), no uidNumber, "
864 "nor gidNumber returned\n", sidstr));
869 id = strtoul(tmp, NULL, 10);
870 if (!idmap_unix_id_is_in_range(id, dom)) {
871 DEBUG(5, ("Requested id (%u) out of range (%u - %u). "
873 dom->low_id, dom->high_id));
880 map = find_map_by_id(&ids[bidx], type, id);
882 DEBUG(2, ("WARNING: couldn't match sid (%s) "
883 "with requested ids\n", sidstr));
888 if ( ! string_to_sid(map->sid, sidstr)) {
889 DEBUG(2, ("ERROR: Invalid SID on entry\n"));
894 if (map->status == ID_MAPPED) {
895 DEBUG(1, ("WARNING: duplicate %s mapping in LDAP. "
896 "overwriting mapping %u -> %s with %u -> %s\n",
897 (type == ID_TYPE_UID) ? "UID" : "GID",
898 id, sid_string_dbg(map->sid), id, sidstr));
904 map->status = ID_MAPPED;
906 DEBUG(10, ("Mapped %s -> %lu (%d)\n", sid_string_dbg(map->sid),
907 (unsigned long)map->xid.id, map->xid.type));
910 /* free the ldap results */
912 ldap_msgfree(result);
916 if (multi && ids[idx]) { /* still some values to map */
922 /* mark all unknwon/expired ones as unmapped */
923 for (i = 0; ids[i]; i++) {
924 if (ids[i]->status != ID_MAPPED)
925 ids[i]->status = ID_UNMAPPED;
933 /**********************************
934 lookup a set of sids.
935 **********************************/
937 /* this function searches up to IDMAP_LDAP_MAX_IDS entries
938 * in maps for a match */
939 static struct id_map *find_map_by_sid(struct id_map **maps, struct dom_sid *sid)
943 for (i = 0; i < IDMAP_LDAP_MAX_IDS; i++) {
944 if (maps[i] == NULL) { /* end of the run */
947 if (dom_sid_equal(maps[i]->sid, sid)) {
955 static NTSTATUS idmap_ldap_sids_to_unixids(struct idmap_domain *dom,
958 LDAPMessage *entry = NULL;
961 struct idmap_ldap_context *ctx;
962 LDAPMessage *result = NULL;
963 const char *uidNumber;
964 const char *gidNumber;
965 const char **attr_list;
974 /* Only do query if we are online */
975 if (idmap_is_offline()) {
976 return NT_STATUS_FILE_IS_OFFLINE;
979 ctx = talloc_get_type(dom->private_data, struct idmap_ldap_context);
981 memctx = talloc_new(ctx);
983 DEBUG(0, ("Out of memory!\n"));
984 return NT_STATUS_NO_MEMORY;
987 uidNumber = get_attr_key2string(idpool_attr_list, LDAP_ATTR_UIDNUMBER);
988 gidNumber = get_attr_key2string(idpool_attr_list, LDAP_ATTR_GIDNUMBER);
990 attr_list = get_attr_list(memctx, sidmap_attr_list);
993 /* if we are requested just one mapping use the simple filter */
995 filter = talloc_asprintf(memctx, "(&(objectClass=%s)(%s=%s))",
996 LDAP_OBJ_IDMAP_ENTRY,
998 sid_string_talloc(memctx, ids[0]->sid));
999 CHECK_ALLOC_DONE(filter);
1000 DEBUG(10, ("Filter: [%s]\n", filter));
1002 /* multiple mappings */
1006 for (i = 0; ids[i]; i++) {
1007 ids[i]->status = ID_UNKNOWN;
1013 TALLOC_FREE(filter);
1014 filter = talloc_asprintf(memctx,
1015 "(&(objectClass=%s)(|",
1016 LDAP_OBJ_IDMAP_ENTRY);
1017 CHECK_ALLOC_DONE(filter);
1020 for (i = 0; (i < IDMAP_LDAP_MAX_IDS) && ids[idx]; i++, idx++) {
1021 filter = talloc_asprintf_append_buffer(filter, "(%s=%s)",
1023 sid_string_talloc(memctx,
1025 CHECK_ALLOC_DONE(filter);
1027 filter = talloc_asprintf_append_buffer(filter, "))");
1028 CHECK_ALLOC_DONE(filter);
1029 DEBUG(10, ("Filter: [%s]", filter));
1035 rc = smbldap_search(ctx->smbldap_state, ctx->suffix, LDAP_SCOPE_SUBTREE,
1036 filter, attr_list, 0, &result);
1038 if (rc != LDAP_SUCCESS) {
1039 DEBUG(3,("Failure looking up sids (%s)\n",
1040 ldap_err2string(rc)));
1041 ret = NT_STATUS_UNSUCCESSFUL;
1045 count = ldap_count_entries(ctx->smbldap_state->ldap_struct, result);
1048 DEBUG(10, ("NO SIDs found\n"));
1051 for (i = 0; i < count; i++) {
1052 char *sidstr = NULL;
1059 if (i == 0) { /* first entry */
1060 entry = ldap_first_entry(ctx->smbldap_state->ldap_struct,
1062 } else { /* following ones */
1063 entry = ldap_next_entry(ctx->smbldap_state->ldap_struct,
1067 DEBUG(2, ("ERROR: Unable to fetch ldap entries "
1072 /* first check if the SID is present */
1073 sidstr = smbldap_talloc_single_attribute(
1074 ctx->smbldap_state->ldap_struct,
1075 entry, LDAP_ATTRIBUTE_SID, memctx);
1076 if ( ! sidstr) { /* no sid ??, skip entry */
1077 DEBUG(2, ("WARNING SID not found on entry\n"));
1081 if ( ! string_to_sid(&sid, sidstr)) {
1082 DEBUG(2, ("ERROR: Invalid SID on entry\n"));
1083 TALLOC_FREE(sidstr);
1087 map = find_map_by_sid(&ids[bidx], &sid);
1089 DEBUG(2, ("WARNING: couldn't find entry sid (%s) "
1091 TALLOC_FREE(sidstr);
1095 /* now try to see if it is a uid, if not try with a gid
1096 * (gid is more common, but in case both uidNumber and
1097 * gidNumber are returned the SID is mapped to the uid
1100 tmp = smbldap_talloc_single_attribute(
1101 ctx->smbldap_state->ldap_struct,
1102 entry, uidNumber, memctx);
1105 tmp = smbldap_talloc_single_attribute(
1106 ctx->smbldap_state->ldap_struct,
1107 entry, gidNumber, memctx);
1109 if ( ! tmp) { /* no ids ?? */
1110 DEBUG(5, ("no uidNumber, "
1111 "nor gidNumber attributes found\n"));
1112 TALLOC_FREE(sidstr);
1116 id = strtoul(tmp, NULL, 10);
1117 if (!idmap_unix_id_is_in_range(id, dom)) {
1118 DEBUG(5, ("Requested id (%u) out of range (%u - %u). "
1120 dom->low_id, dom->high_id));
1121 TALLOC_FREE(sidstr);
1127 if (map->status == ID_MAPPED) {
1128 DEBUG(1, ("WARNING: duplicate %s mapping in LDAP. "
1129 "overwriting mapping %s -> %u with %s -> %u\n",
1130 (type == ID_TYPE_UID) ? "UID" : "GID",
1131 sidstr, map->xid.id, sidstr, id));
1134 TALLOC_FREE(sidstr);
1137 map->xid.type = type;
1139 map->status = ID_MAPPED;
1141 DEBUG(10, ("Mapped %s -> %lu (%d)\n", sid_string_dbg(map->sid),
1142 (unsigned long)map->xid.id, map->xid.type));
1145 /* free the ldap results */
1147 ldap_msgfree(result);
1151 if (multi && ids[idx]) { /* still some values to map */
1156 * try to create new mappings for unmapped sids
1158 for (i = 0; ids[i]; i++) {
1159 if (ids[i]->status != ID_MAPPED) {
1160 ids[i]->status = ID_UNMAPPED;
1161 if (ids[i]->sid != NULL) {
1162 ret = idmap_ldap_new_mapping(dom, ids[i]);
1163 if (!NT_STATUS_IS_OK(ret)) {
1173 talloc_free(memctx);
1177 /**********************************
1178 Close the idmap ldap instance
1179 **********************************/
1181 static NTSTATUS idmap_ldap_close(struct idmap_domain *dom)
1183 struct idmap_ldap_context *ctx;
1185 if (dom->private_data) {
1186 ctx = talloc_get_type(dom->private_data,
1187 struct idmap_ldap_context);
1190 dom->private_data = NULL;
1193 return NT_STATUS_OK;
1196 static struct idmap_methods idmap_ldap_methods = {
1198 .init = idmap_ldap_db_init,
1199 .unixids_to_sids = idmap_ldap_unixids_to_sids,
1200 .sids_to_unixids = idmap_ldap_sids_to_unixids,
1201 .allocate_id = idmap_ldap_get_new_id,
1202 .close_fn = idmap_ldap_close
1205 NTSTATUS idmap_ldap_init(void);
1206 NTSTATUS idmap_ldap_init(void)
1208 return smb_register_idmap(SMB_IDMAP_INTERFACE_VERSION, "ldap",
1209 &idmap_ldap_methods);