2 Unix SMB/CIFS implementation.
4 Winbind daemon for ntdom nss module
6 Copyright (C) Tim Potter 2000
7 Copyright (C) Jeremy Allison 2001.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27 #define DBGC_CLASS DBGC_WINBIND
29 /***************************************************************
30 Empty static struct for negative caching.
31 ****************************************************************/
33 /* Fill a grent structure from various other information */
35 static BOOL fill_grent(struct winbindd_gr *gr, const char *dom_name,
36 const char *gr_name, gid_t unix_gid)
38 fstring full_group_name;
40 fill_domain_username(full_group_name, dom_name, gr_name);
42 gr->gr_gid = unix_gid;
44 /* Group name and password */
46 safe_strcpy(gr->gr_name, full_group_name, sizeof(gr->gr_name) - 1);
47 safe_strcpy(gr->gr_passwd, "x", sizeof(gr->gr_passwd) - 1);
52 /* Fill in the group membership field of a NT group given by group_sid */
54 static BOOL fill_grent_mem(struct winbindd_domain *domain,
56 enum SID_NAME_USE group_name_type,
57 int *num_gr_mem, char **gr_mem, int *gr_mem_len)
59 DOM_SID **sid_mem = NULL;
61 uint32 *name_types = NULL;
62 unsigned int buf_len, buf_ndx, i;
63 char **names = NULL, *buf;
69 if (!(mem_ctx = talloc_init("fill_grent_mem(%s)", domain->name)))
72 /* Initialise group membership information */
74 DEBUG(10, ("group SID %s\n", sid_to_string(sid_string, group_sid)));
78 if (group_name_type != SID_NAME_DOM_GRP) {
79 DEBUG(1, ("SID %s in domain %s isn't a domain group\n",
80 sid_to_string(sid_string, group_sid), domain->name));
84 /* Lookup group members */
85 status = domain->methods->lookup_groupmem(domain, mem_ctx, group_sid, &num_names,
86 &sid_mem, &names, &name_types);
87 if (!NT_STATUS_IS_OK(status)) {
88 DEBUG(1, ("could not lookup membership for group rid %s in domain %s (error: %s)\n",
89 sid_to_string(sid_string, group_sid), domain->name, nt_errstr(status)));
94 DEBUG(10, ("looked up %d names\n", num_names));
96 if (DEBUGLEVEL >= 10) {
97 for (i = 0; i < num_names; i++)
98 DEBUG(10, ("\t%20s %s %d\n", names[i], sid_to_string(sid_string, sid_mem[i]),
102 /* Add members to list */
105 buf_len = buf_ndx = 0;
109 for (i = 0; i < num_names; i++) {
116 DEBUG(10, ("processing name %s\n", the_name));
118 /* FIXME: need to cope with groups within groups. These
119 occur in Universal groups on a Windows 2000 native mode
122 if (name_types[i] != SID_NAME_USER) {
123 DEBUG(3, ("name %s isn't a domain user\n", the_name));
127 /* Don't bother with machine accounts */
129 if (the_name[strlen(the_name) - 1] == '$') {
130 DEBUG(10, ("%s is machine account\n", the_name));
134 /* Append domain name */
136 fill_domain_username(name, domain->name, the_name);
140 /* Add to list or calculate buffer length */
143 buf_len += len + 1; /* List is comma separated */
145 DEBUG(10, ("buf_len + %d = %d\n", len + 1, buf_len));
147 DEBUG(10, ("appending %s at ndx %d\n", name, len));
148 safe_strcpy(&buf[buf_ndx], name, len);
155 /* Allocate buffer */
157 if (!buf && buf_len != 0) {
158 if (!(buf = malloc(buf_len))) {
159 DEBUG(1, ("out of memory\n"));
163 memset(buf, 0, buf_len);
167 if (buf && buf_ndx > 0) {
168 buf[buf_ndx - 1] = '\0';
172 *gr_mem_len = buf_len;
174 DEBUG(10, ("num_mem = %d, len = %d, mem = %s\n", *num_gr_mem,
175 buf_len, *num_gr_mem ? buf : "NULL"));
180 talloc_destroy(mem_ctx);
182 DEBUG(10, ("fill_grent_mem returning %d\n", result));
187 /* Return a group structure from a group name */
189 enum winbindd_result winbindd_getgrnam(struct winbindd_cli_state *state)
192 struct winbindd_domain *domain;
193 enum SID_NAME_USE name_type;
194 fstring name_domain, name_group;
199 /* Ensure null termination */
200 state->request.data.groupname[sizeof(state->request.data.groupname)-1]='\0';
202 DEBUG(3, ("[%5d]: getgrnam %s\n", state->pid,
203 state->request.data.groupname));
205 /* Parse domain and groupname */
207 memset(name_group, 0, sizeof(fstring));
209 tmp = state->request.data.groupname;
210 if (!parse_domain_user(tmp, name_domain, name_group))
211 return WINBINDD_ERROR;
213 /* fail if we are a PDC and this is our domain; should be done by passdb */
215 if ( lp_server_role() == ROLE_DOMAIN_PDC && 0==StrCaseCmp( domain->name, lp_workgroup()) )
216 return WINBINDD_ERROR;
218 /* Get info for the domain */
220 if ((domain = find_domain_from_name(name_domain)) == NULL) {
221 DEBUG(0, ("could not get domain sid for domain %s\n",
223 return WINBINDD_ERROR;
226 /* Get rid and name type from name */
228 if (!winbindd_lookup_sid_by_name(domain, name_group, &group_sid,
230 DEBUG(1, ("group %s in domain %s does not exist\n",
231 name_group, name_domain));
232 return WINBINDD_ERROR;
235 if ((name_type != SID_NAME_ALIAS) && (name_type != SID_NAME_DOM_GRP)) {
236 DEBUG(1, ("name '%s' is not a local or domain group: %d\n",
237 name_group, name_type));
238 return WINBINDD_ERROR;
241 if (!winbindd_idmap_get_gid_from_sid(&group_sid, &gid)) {
242 DEBUG(1, ("error converting unix gid to sid\n"));
243 return WINBINDD_ERROR;
246 if (!fill_grent(&state->response.data.gr, name_domain,
248 !fill_grent_mem(domain, &group_sid, name_type,
249 &state->response.data.gr.num_gr_mem,
250 &gr_mem, &gr_mem_len)) {
251 return WINBINDD_ERROR;
254 /* Group membership lives at start of extra data */
256 state->response.data.gr.gr_mem_ofs = 0;
258 state->response.length += gr_mem_len;
259 state->response.extra_data = gr_mem;
264 /* Return a group structure from a gid number */
266 enum winbindd_result winbindd_getgrgid(struct winbindd_cli_state *state)
268 struct winbindd_domain *domain;
270 enum SID_NAME_USE name_type;
276 DEBUG(3, ("[%5d]: getgrgid %d\n", state->pid,
277 state->request.data.gid));
279 /* Bug out if the gid isn't in the winbind range */
281 if ((state->request.data.gid < server_state.gid_low) ||
282 (state->request.data.gid > server_state.gid_high))
283 return WINBINDD_ERROR;
285 /* Get rid from gid */
287 if (!winbindd_idmap_get_sid_from_gid(state->request.data.gid, &group_sid)) {
288 DEBUG(1, ("could not convert gid %d to rid\n",
289 state->request.data.gid));
290 return WINBINDD_ERROR;
293 /* Get name from sid */
295 if (!winbindd_lookup_name_by_sid(&group_sid, dom_name, group_name, &name_type)) {
296 DEBUG(1, ("could not lookup sid\n"));
297 return WINBINDD_ERROR;
300 if (!((name_type == SID_NAME_ALIAS) ||
301 (name_type == SID_NAME_DOM_GRP))) {
302 DEBUG(1, ("name '%s' is not a local or domain group: %d\n",
303 group_name, name_type));
304 return WINBINDD_ERROR;
307 /* Fill in group structure */
309 domain = find_domain_from_sid(&group_sid);
312 DEBUG(1,("Can't find domain from sid\n"));
313 return WINBINDD_ERROR;
316 if (!fill_grent(&state->response.data.gr, dom_name, group_name,
317 state->request.data.gid) ||
318 !fill_grent_mem(domain, &group_sid, name_type,
319 &state->response.data.gr.num_gr_mem,
320 &gr_mem, &gr_mem_len))
321 return WINBINDD_ERROR;
323 /* Group membership lives at start of extra data */
325 state->response.data.gr.gr_mem_ofs = 0;
327 state->response.length += gr_mem_len;
328 state->response.extra_data = gr_mem;
334 * set/get/endgrent functions
337 /* "Rewind" file pointer for group database enumeration */
339 enum winbindd_result winbindd_setgrent(struct winbindd_cli_state *state)
341 struct winbindd_domain *domain;
343 DEBUG(3, ("[%5d]: setgrent\n", state->pid));
345 /* Check user has enabled this */
347 if (!lp_winbind_enum_groups())
348 return WINBINDD_ERROR;
350 /* Free old static data if it exists */
352 if (state->getgrent_state != NULL) {
353 free_getent_state(state->getgrent_state);
354 state->getgrent_state = NULL;
357 /* Create sam pipes for each domain we know about */
359 for (domain = domain_list(); domain != NULL; domain = domain->next) {
360 struct getent_state *domain_state;
362 /* Create a state record for this domain */
364 if ((domain_state = (struct getent_state *)
365 malloc(sizeof(struct getent_state))) == NULL) {
366 DEBUG(1, ("winbindd_setgrent: malloc failed for domain_state!\n"));
367 return WINBINDD_ERROR;
370 ZERO_STRUCTP(domain_state);
372 fstrcpy(domain_state->domain_name, domain->name);
374 /* Add to list of open domains */
376 DLIST_ADD(state->getgrent_state, domain_state);
382 /* Close file pointer to ntdom group database */
384 enum winbindd_result winbindd_endgrent(struct winbindd_cli_state *state)
386 DEBUG(3, ("[%5d]: endgrent\n", state->pid));
388 free_getent_state(state->getgrent_state);
389 state->getgrent_state = NULL;
394 /* Get the list of domain groups and domain aliases for a domain. We fill in
395 the sam_entries and num_sam_entries fields with domain group information.
396 The dispinfo_ndx field is incremented to the index of the next group to
397 fetch. Return True if some groups were returned, False otherwise. */
399 #define MAX_FETCH_SAM_ENTRIES 100
401 static BOOL get_sam_group_entries(struct getent_state *ent)
405 struct acct_info *name_list = NULL, *tmp_name_list = NULL;
408 struct acct_info *sam_grp_entries = NULL;
409 struct winbindd_domain *domain;
411 if (ent->got_sam_entries)
414 if ( lp_server_role() == ROLE_DOMAIN_PDC && 0==StrCaseCmp(lp_workgroup(), ent->domain_name))
417 if (!(mem_ctx = talloc_init("get_sam_group_entries(%s)",
418 ent->domain_name))) {
419 DEBUG(1, ("get_sam_group_entries: could not create talloc context!\n"));
423 /* Free any existing group info */
425 SAFE_FREE(ent->sam_entries);
426 ent->num_sam_entries = 0;
427 ent->got_sam_entries = True;
429 /* Enumerate domain groups */
433 if (!(domain = find_domain_from_name(ent->domain_name))) {
434 DEBUG(3, ("no such domain %s in get_sam_group_entries\n", ent->domain_name));
438 /* always get the domain global groups */
440 status = domain->methods->enum_dom_groups(domain, mem_ctx, &num_entries, &sam_grp_entries);
442 if (!NT_STATUS_IS_OK(status)) {
443 DEBUG(3, ("get_sam_group_entries: could not enumerate domain groups! Error: %s\n", nt_errstr(status)));
448 /* Copy entries into return buffer */
451 if ( !(name_list = malloc(sizeof(struct acct_info) * num_entries)) ) {
452 DEBUG(0,("get_sam_group_entries: Failed to malloc memory for %d domain groups!\n",
457 memcpy( name_list, sam_grp_entries, num_entries * sizeof(struct acct_info) );
460 ent->num_sam_entries = num_entries;
462 /* get the domain local groups if we are a member of
463 a native win2k domain */
465 if ( domain->native_mode && domain->methods->enum_local_groups )
467 DEBUG(4,("get_sam_group_entries: Native Mode 2k domain; enumerating local groups as well\n"));
469 status = domain->methods->enum_local_groups(domain, mem_ctx, &num_entries, &sam_grp_entries);
471 if ( !NT_STATUS_IS_OK(status) ) {
472 DEBUG(3,("get_sam_group_entries: Failed to enumerate domain local groups!\n"));
476 DEBUG(4,("get_sam_group_entries: Returned %d local groups\n", num_entries));
478 /* Copy entries into return buffer */
481 if ( !(tmp_name_list = Realloc( name_list, sizeof(struct acct_info) * (ent->num_sam_entries+num_entries))) )
483 DEBUG(0,("get_sam_group_entries: Failed to realloc more memory for %d local groups!\n",
486 SAFE_FREE( name_list );
490 name_list = tmp_name_list;
492 memcpy( &name_list[ent->num_sam_entries], sam_grp_entries,
493 num_entries * sizeof(struct acct_info) );
496 ent->num_sam_entries += num_entries;
500 /* Fill in remaining fields */
502 ent->sam_entries = name_list;
503 ent->sam_entry_index = 0;
505 result = (ent->num_sam_entries > 0);
508 talloc_destroy(mem_ctx);
513 /* Fetch next group entry from ntdom database */
515 #define MAX_GETGRENT_GROUPS 500
517 enum winbindd_result winbindd_getgrent(struct winbindd_cli_state *state)
519 struct getent_state *ent;
520 struct winbindd_gr *group_list = NULL;
521 int num_groups, group_list_ndx = 0, i, gr_mem_list_len = 0;
522 char *new_extra_data, *gr_mem_list = NULL;
524 DEBUG(3, ("[%5d]: getgrent\n", state->pid));
526 /* Check user has enabled this */
528 if (!lp_winbind_enum_groups())
529 return WINBINDD_ERROR;
531 num_groups = MIN(MAX_GETGRENT_GROUPS, state->request.data.num_entries);
533 if ((state->response.extra_data =
534 malloc(num_groups * sizeof(struct winbindd_gr))) == NULL)
535 return WINBINDD_ERROR;
537 state->response.data.num_entries = 0;
539 group_list = (struct winbindd_gr *)state->response.extra_data;
541 if (!(ent = state->getgrent_state))
542 return WINBINDD_ERROR;
544 /* Start sending back groups */
546 for (i = 0; i < num_groups; i++) {
547 struct acct_info *name_list = NULL;
548 fstring domain_group_name;
552 char *gr_mem, *new_gr_mem_list;
554 struct winbindd_domain *domain;
556 /* Do we need to fetch another chunk of groups? */
560 DEBUG(10, ("entry_index = %d, num_entries = %d\n",
561 ent->sam_entry_index, ent->num_sam_entries));
563 if (ent->num_sam_entries == ent->sam_entry_index) {
565 while(ent && !get_sam_group_entries(ent)) {
566 struct getent_state *next_ent;
568 DEBUG(10, ("freeing state info for domain %s\n", ent->domain_name));
570 /* Free state information for this domain */
572 SAFE_FREE(ent->sam_entries);
574 next_ent = ent->next;
575 DLIST_REMOVE(state->getgrent_state, ent);
581 /* No more domains */
587 name_list = ent->sam_entries;
590 find_domain_from_name(ent->domain_name))) {
591 DEBUG(3, ("No such domain %s in winbindd_getgrent\n", ent->domain_name));
596 /* Lookup group info */
598 sid_copy(&group_sid, &domain->sid);
599 sid_append_rid(&group_sid, name_list[ent->sam_entry_index].rid);
601 if (!winbindd_idmap_get_gid_from_sid(
605 DEBUG(1, ("could not look up gid for group %s\n",
606 name_list[ent->sam_entry_index].acct_name));
608 ent->sam_entry_index++;
612 DEBUG(10, ("got gid %d for group %x\n", group_gid,
613 name_list[ent->sam_entry_index].rid));
615 /* Fill in group entry */
617 fill_domain_username(domain_group_name, ent->domain_name,
618 name_list[ent->sam_entry_index].acct_name);
620 result = fill_grent(&group_list[group_list_ndx],
622 name_list[ent->sam_entry_index].acct_name,
625 /* Fill in group membership entry */
629 group_list[group_list_ndx].num_gr_mem = 0;
633 /* Get group membership */
634 if (state->request.cmd == WINBINDD_GETGRLST) {
637 sid_copy(&member_sid, &domain->sid);
638 sid_append_rid(&member_sid, name_list[ent->sam_entry_index].rid);
639 result = fill_grent_mem(
643 &group_list[group_list_ndx].num_gr_mem,
644 &gr_mem, &gr_mem_len);
649 /* Append to group membership list */
650 new_gr_mem_list = Realloc(
652 gr_mem_list_len + gr_mem_len);
654 if (!new_gr_mem_list && (group_list[group_list_ndx].num_gr_mem != 0)) {
655 DEBUG(0, ("out of memory\n"));
656 SAFE_FREE(gr_mem_list);
661 DEBUG(10, ("list_len = %d, mem_len = %d\n",
662 gr_mem_list_len, gr_mem_len));
664 gr_mem_list = new_gr_mem_list;
666 memcpy(&gr_mem_list[gr_mem_list_len], gr_mem,
671 group_list[group_list_ndx].gr_mem_ofs =
674 gr_mem_list_len += gr_mem_len;
677 ent->sam_entry_index++;
679 /* Add group to return list */
683 DEBUG(10, ("adding group num_entries = %d\n",
684 state->response.data.num_entries));
687 state->response.data.num_entries++;
689 state->response.length +=
690 sizeof(struct winbindd_gr);
693 DEBUG(0, ("could not lookup domain group %s\n",
698 /* Copy the list of group memberships to the end of the extra data */
700 if (group_list_ndx == 0)
703 new_extra_data = Realloc(
704 state->response.extra_data,
705 group_list_ndx * sizeof(struct winbindd_gr) + gr_mem_list_len);
707 if (!new_extra_data) {
708 DEBUG(0, ("out of memory\n"));
710 SAFE_FREE(state->response.extra_data);
711 SAFE_FREE(gr_mem_list);
713 return WINBINDD_ERROR;
716 state->response.extra_data = new_extra_data;
718 memcpy(&((char *)state->response.extra_data)
719 [group_list_ndx * sizeof(struct winbindd_gr)],
720 gr_mem_list, gr_mem_list_len);
722 SAFE_FREE(gr_mem_list);
724 state->response.length += gr_mem_list_len;
726 DEBUG(10, ("returning %d groups, length = %d\n",
727 group_list_ndx, gr_mem_list_len));
733 return (group_list_ndx > 0) ? WINBINDD_OK : WINBINDD_ERROR;
736 /* List domain groups without mapping to unix ids */
738 enum winbindd_result winbindd_list_groups(struct winbindd_cli_state *state)
740 uint32 total_entries = 0;
741 struct winbindd_domain *domain;
742 char *extra_data = NULL;
744 unsigned int extra_data_len = 0, i;
746 DEBUG(3, ("[%5d]: list groups\n", state->pid));
748 /* Enumerate over trusted domains */
750 for (domain = domain_list(); domain; domain = domain->next) {
751 struct getent_state groups;
753 /* fail if we are a PDC and this is our domain; should be done by passdb */
755 if ( lp_server_role() == ROLE_DOMAIN_PDC && 0==StrCaseCmp( domain->name, lp_workgroup()) )
760 /* Get list of sam groups */
762 fstrcpy(groups.domain_name, domain->name);
764 get_sam_group_entries(&groups);
766 if (groups.num_sam_entries == 0) {
767 /* this domain is empty or in an error state */
771 /* keep track the of the total number of groups seen so
772 far over all domains */
773 total_entries += groups.num_sam_entries;
775 /* Allocate some memory for extra data. Note that we limit
776 account names to sizeof(fstring) = 128 characters. */
777 ted = Realloc(extra_data, sizeof(fstring) * total_entries);
780 DEBUG(0,("failed to enlarge buffer!\n"));
781 SAFE_FREE(extra_data);
782 return WINBINDD_ERROR;
786 /* Pack group list into extra data fields */
787 for (i = 0; i < groups.num_sam_entries; i++) {
788 char *group_name = ((struct acct_info *)
789 groups.sam_entries)[i].acct_name;
792 fill_domain_username(name, domain->name, group_name);
793 /* Append to extra data */
794 memcpy(&extra_data[extra_data_len], name,
796 extra_data_len += strlen(name);
797 extra_data[extra_data_len++] = ',';
800 free(groups.sam_entries);
803 /* Assign extra_data fields in response structure */
805 extra_data[extra_data_len - 1] = '\0';
806 state->response.extra_data = extra_data;
807 state->response.length += extra_data_len;
810 /* No domains may have responded but that's still OK so don't
816 /* Get user supplementary groups. This is much quicker than trying to
817 invert the groups database. */
819 enum winbindd_result winbindd_getgroups(struct winbindd_cli_state *state)
821 fstring name_domain, name_user;
823 enum SID_NAME_USE name_type;
824 uint32 num_groups, num_gids;
827 struct winbindd_domain *domain;
828 enum winbindd_result result = WINBINDD_ERROR;
833 /* Ensure null termination */
834 state->request.data.username[sizeof(state->request.data.username)-1]='\0';
836 DEBUG(3, ("[%5d]: getgroups %s\n", state->pid,
837 state->request.data.username));
839 if (!(mem_ctx = talloc_init("winbindd_getgroups(%s)",
840 state->request.data.username)))
841 return WINBINDD_ERROR;
843 /* Parse domain and username */
845 if (!parse_domain_user(state->request.data.username, name_domain,
849 /* fail if we are a PDC and this is our domain; should be done by passdb */
851 if ( lp_server_role() == ROLE_DOMAIN_PDC && 0==StrCaseCmp( name_domain, lp_workgroup()) )
852 return WINBINDD_ERROR;
854 /* Get info for the domain */
856 if ((domain = find_domain_from_name(name_domain)) == NULL) {
857 DEBUG(0, ("could not find domain entry for domain %s\n",
862 /* Get rid and name type from name. The following costs 1 packet */
864 if (!winbindd_lookup_sid_by_name(domain, name_user, &user_sid,
866 DEBUG(1, ("user '%s' does not exist\n", name_user));
870 if (name_type != SID_NAME_USER) {
871 DEBUG(1, ("name '%s' is not a user name: %d\n",
872 name_user, name_type));
876 status = domain->methods->lookup_usergroups(domain, mem_ctx,
877 &user_sid, &num_groups,
879 if (!NT_STATUS_IS_OK(status)) goto done;
881 /* Copy data back to client */
884 gid_list = malloc(sizeof(gid_t) * num_groups);
886 if (state->response.extra_data)
889 for (i = 0; i < num_groups; i++) {
890 if (!winbindd_idmap_get_gid_from_sid(
892 &gid_list[num_gids])) {
895 DEBUG(1, ("unable to convert group sid %s to gid\n",
896 sid_to_string(sid_string, user_gids[i])));
903 state->response.data.num_entries = num_gids;
904 state->response.extra_data = gid_list;
905 state->response.length += num_gids * sizeof(gid_t);
907 result = WINBINDD_OK;
911 talloc_destroy(mem_ctx);