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 /* Get info for the domain */
215 if ((domain = find_domain_from_name(name_domain)) == NULL) {
216 DEBUG(0, ("could not get domain sid for domain %s\n",
218 return WINBINDD_ERROR;
221 /* Get rid and name type from name */
223 if (!winbindd_lookup_sid_by_name(domain, name_group, &group_sid,
225 DEBUG(1, ("group %s in domain %s does not exist\n",
226 name_group, name_domain));
227 return WINBINDD_ERROR;
230 if ((name_type != SID_NAME_ALIAS) && (name_type != SID_NAME_DOM_GRP)) {
231 DEBUG(1, ("name '%s' is not a local or domain group: %d\n",
232 name_group, name_type));
233 return WINBINDD_ERROR;
236 if (NT_STATUS_IS_ERR(sid_to_gid(&group_sid, &gid))) {
237 DEBUG(1, ("error converting unix gid to sid\n"));
238 return WINBINDD_ERROR;
241 if (!fill_grent(&state->response.data.gr, name_domain,
243 !fill_grent_mem(domain, &group_sid, name_type,
244 &state->response.data.gr.num_gr_mem,
245 &gr_mem, &gr_mem_len)) {
246 return WINBINDD_ERROR;
249 /* Group membership lives at start of extra data */
251 state->response.data.gr.gr_mem_ofs = 0;
253 state->response.length += gr_mem_len;
254 state->response.extra_data = gr_mem;
259 /* Return a group structure from a gid number */
261 enum winbindd_result winbindd_getgrgid(struct winbindd_cli_state *state)
263 struct winbindd_domain *domain;
265 enum SID_NAME_USE name_type;
271 DEBUG(3, ("[%5d]: getgrgid %d\n", state->pid,
272 state->request.data.gid));
274 /* Bug out if the gid isn't in the winbind range */
276 if ((state->request.data.gid < server_state.gid_low) ||
277 (state->request.data.gid > server_state.gid_high))
278 return WINBINDD_ERROR;
280 /* Get rid from gid */
281 if (NT_STATUS_IS_ERR(uid_to_sid(&group_sid, state->request.data.gid))) {
282 DEBUG(1, ("could not convert gid %d to rid\n",
283 state->request.data.gid));
284 return WINBINDD_ERROR;
287 /* Get name from sid */
289 if (!winbindd_lookup_name_by_sid(&group_sid, dom_name, group_name, &name_type)) {
290 DEBUG(1, ("could not lookup sid\n"));
291 return WINBINDD_ERROR;
294 if (!((name_type == SID_NAME_ALIAS) ||
295 (name_type == SID_NAME_DOM_GRP))) {
296 DEBUG(1, ("name '%s' is not a local or domain group: %d\n",
297 group_name, name_type));
298 return WINBINDD_ERROR;
301 /* Fill in group structure */
303 domain = find_domain_from_sid(&group_sid);
306 DEBUG(1,("Can't find domain from sid\n"));
307 return WINBINDD_ERROR;
310 if (!fill_grent(&state->response.data.gr, dom_name, group_name,
311 state->request.data.gid) ||
312 !fill_grent_mem(domain, &group_sid, name_type,
313 &state->response.data.gr.num_gr_mem,
314 &gr_mem, &gr_mem_len))
315 return WINBINDD_ERROR;
317 /* Group membership lives at start of extra data */
319 state->response.data.gr.gr_mem_ofs = 0;
321 state->response.length += gr_mem_len;
322 state->response.extra_data = gr_mem;
328 * set/get/endgrent functions
331 /* "Rewind" file pointer for group database enumeration */
333 enum winbindd_result winbindd_setgrent(struct winbindd_cli_state *state)
335 struct winbindd_domain *domain;
337 DEBUG(3, ("[%5d]: setgrent\n", state->pid));
339 /* Check user has enabled this */
341 if (!lp_winbind_enum_groups())
342 return WINBINDD_ERROR;
344 /* Free old static data if it exists */
346 if (state->getgrent_state != NULL) {
347 free_getent_state(state->getgrent_state);
348 state->getgrent_state = NULL;
351 /* Create sam pipes for each domain we know about */
353 for (domain = domain_list(); domain != NULL; domain = domain->next) {
354 struct getent_state *domain_state;
356 /* Create a state record for this domain */
358 if ((domain_state = (struct getent_state *)
359 malloc(sizeof(struct getent_state))) == NULL) {
360 DEBUG(1, ("winbindd_setgrent: malloc failed for domain_state!\n"));
361 return WINBINDD_ERROR;
364 ZERO_STRUCTP(domain_state);
366 fstrcpy(domain_state->domain_name, domain->name);
368 /* Add to list of open domains */
370 DLIST_ADD(state->getgrent_state, domain_state);
376 /* Close file pointer to ntdom group database */
378 enum winbindd_result winbindd_endgrent(struct winbindd_cli_state *state)
380 DEBUG(3, ("[%5d]: endgrent\n", state->pid));
382 free_getent_state(state->getgrent_state);
383 state->getgrent_state = NULL;
388 /* Get the list of domain groups and domain aliases for a domain. We fill in
389 the sam_entries and num_sam_entries fields with domain group information.
390 The dispinfo_ndx field is incremented to the index of the next group to
391 fetch. Return True if some groups were returned, False otherwise. */
393 #define MAX_FETCH_SAM_ENTRIES 100
395 static BOOL get_sam_group_entries(struct getent_state *ent)
399 struct acct_info *name_list = NULL, *tmp_name_list = NULL;
402 struct acct_info *sam_grp_entries = NULL;
403 struct winbindd_domain *domain;
405 if (ent->got_sam_entries)
408 if (!(mem_ctx = talloc_init("get_sam_group_entries(%s)",
409 ent->domain_name))) {
410 DEBUG(1, ("get_sam_group_entries: could not create talloc context!\n"));
414 /* Free any existing group info */
416 SAFE_FREE(ent->sam_entries);
417 ent->num_sam_entries = 0;
418 ent->got_sam_entries = True;
420 /* Enumerate domain groups */
424 if (!(domain = find_domain_from_name(ent->domain_name))) {
425 DEBUG(3, ("no such domain %s in get_sam_group_entries\n", ent->domain_name));
429 /* always get the domain global groups */
431 status = domain->methods->enum_dom_groups(domain, mem_ctx, &num_entries, &sam_grp_entries);
433 if (!NT_STATUS_IS_OK(status)) {
434 DEBUG(3, ("get_sam_group_entries: could not enumerate domain groups! Error: %s\n", nt_errstr(status)));
439 /* Copy entries into return buffer */
442 if ( !(name_list = malloc(sizeof(struct acct_info) * num_entries)) ) {
443 DEBUG(0,("get_sam_group_entries: Failed to malloc memory for %d domain groups!\n",
448 memcpy( name_list, sam_grp_entries, num_entries * sizeof(struct acct_info) );
451 ent->num_sam_entries = num_entries;
453 /* get the domain local groups if we are a member of a native win2k domain */
455 if ( domain->native_mode
456 && domain->methods->enum_local_groups
457 && strequal(lp_workgroup(), domain->name) )
459 DEBUG(4,("get_sam_group_entries: Native Mode 2k domain; enumerating local groups as well\n"));
461 status = domain->methods->enum_local_groups(domain, mem_ctx, &num_entries, &sam_grp_entries);
463 if ( !NT_STATUS_IS_OK(status) ) {
464 DEBUG(3,("get_sam_group_entries: Failed to enumerate domain local groups!\n"));
468 DEBUG(4,("get_sam_group_entries: Returned %d local groups\n", num_entries));
470 /* Copy entries into return buffer */
473 if ( !(tmp_name_list = Realloc( name_list, sizeof(struct acct_info) * (ent->num_sam_entries+num_entries))) )
475 DEBUG(0,("get_sam_group_entries: Failed to realloc more memory for %d local groups!\n",
478 SAFE_FREE( name_list );
482 name_list = tmp_name_list;
484 memcpy( &name_list[ent->num_sam_entries], sam_grp_entries,
485 num_entries * sizeof(struct acct_info) );
488 ent->num_sam_entries += num_entries;
492 /* Fill in remaining fields */
494 ent->sam_entries = name_list;
495 ent->sam_entry_index = 0;
497 result = (ent->num_sam_entries > 0);
500 talloc_destroy(mem_ctx);
505 /* Fetch next group entry from ntdom database */
507 #define MAX_GETGRENT_GROUPS 500
509 enum winbindd_result winbindd_getgrent(struct winbindd_cli_state *state)
511 struct getent_state *ent;
512 struct winbindd_gr *group_list = NULL;
513 int num_groups, group_list_ndx = 0, i, gr_mem_list_len = 0;
514 char *new_extra_data, *gr_mem_list = NULL;
516 DEBUG(3, ("[%5d]: getgrent\n", state->pid));
518 /* Check user has enabled this */
520 if (!lp_winbind_enum_groups())
521 return WINBINDD_ERROR;
523 num_groups = MIN(MAX_GETGRENT_GROUPS, state->request.data.num_entries);
525 if ((state->response.extra_data =
526 malloc(num_groups * sizeof(struct winbindd_gr))) == NULL)
527 return WINBINDD_ERROR;
529 state->response.data.num_entries = 0;
531 group_list = (struct winbindd_gr *)state->response.extra_data;
533 if (!(ent = state->getgrent_state))
534 return WINBINDD_ERROR;
536 /* Start sending back groups */
538 for (i = 0; i < num_groups; i++) {
539 struct acct_info *name_list = NULL;
540 fstring domain_group_name;
544 char *gr_mem, *new_gr_mem_list;
546 struct winbindd_domain *domain;
548 /* Do we need to fetch another chunk of groups? */
552 DEBUG(10, ("entry_index = %d, num_entries = %d\n",
553 ent->sam_entry_index, ent->num_sam_entries));
555 if (ent->num_sam_entries == ent->sam_entry_index) {
557 while(ent && !get_sam_group_entries(ent)) {
558 struct getent_state *next_ent;
560 DEBUG(10, ("freeing state info for domain %s\n", ent->domain_name));
562 /* Free state information for this domain */
564 SAFE_FREE(ent->sam_entries);
566 next_ent = ent->next;
567 DLIST_REMOVE(state->getgrent_state, ent);
573 /* No more domains */
579 name_list = ent->sam_entries;
582 find_domain_from_name(ent->domain_name))) {
583 DEBUG(3, ("No such domain %s in winbindd_getgrent\n", ent->domain_name));
588 /* Lookup group info */
590 sid_copy(&group_sid, &domain->sid);
591 sid_append_rid(&group_sid, name_list[ent->sam_entry_index].rid);
593 if (NT_STATUS_IS_ERR(sid_to_gid(&group_sid, &group_gid))) {
595 DEBUG(1, ("could not look up gid for group %s\n",
596 name_list[ent->sam_entry_index].acct_name));
598 ent->sam_entry_index++;
602 DEBUG(10, ("got gid %d for group %x\n", group_gid,
603 name_list[ent->sam_entry_index].rid));
605 /* Fill in group entry */
607 fill_domain_username(domain_group_name, ent->domain_name,
608 name_list[ent->sam_entry_index].acct_name);
610 result = fill_grent(&group_list[group_list_ndx],
612 name_list[ent->sam_entry_index].acct_name,
615 /* Fill in group membership entry */
619 group_list[group_list_ndx].num_gr_mem = 0;
623 /* Get group membership */
624 if (state->request.cmd == WINBINDD_GETGRLST) {
627 sid_copy(&member_sid, &domain->sid);
628 sid_append_rid(&member_sid, name_list[ent->sam_entry_index].rid);
629 result = fill_grent_mem(
633 &group_list[group_list_ndx].num_gr_mem,
634 &gr_mem, &gr_mem_len);
639 /* Append to group membership list */
640 new_gr_mem_list = Realloc(
642 gr_mem_list_len + gr_mem_len);
644 if (!new_gr_mem_list && (group_list[group_list_ndx].num_gr_mem != 0)) {
645 DEBUG(0, ("out of memory\n"));
646 SAFE_FREE(gr_mem_list);
651 DEBUG(10, ("list_len = %d, mem_len = %d\n",
652 gr_mem_list_len, gr_mem_len));
654 gr_mem_list = new_gr_mem_list;
656 memcpy(&gr_mem_list[gr_mem_list_len], gr_mem,
661 group_list[group_list_ndx].gr_mem_ofs =
664 gr_mem_list_len += gr_mem_len;
667 ent->sam_entry_index++;
669 /* Add group to return list */
673 DEBUG(10, ("adding group num_entries = %d\n",
674 state->response.data.num_entries));
677 state->response.data.num_entries++;
679 state->response.length +=
680 sizeof(struct winbindd_gr);
683 DEBUG(0, ("could not lookup domain group %s\n",
688 /* Copy the list of group memberships to the end of the extra data */
690 if (group_list_ndx == 0)
693 new_extra_data = Realloc(
694 state->response.extra_data,
695 group_list_ndx * sizeof(struct winbindd_gr) + gr_mem_list_len);
697 if (!new_extra_data) {
698 DEBUG(0, ("out of memory\n"));
700 SAFE_FREE(state->response.extra_data);
701 SAFE_FREE(gr_mem_list);
703 return WINBINDD_ERROR;
706 state->response.extra_data = new_extra_data;
708 memcpy(&((char *)state->response.extra_data)
709 [group_list_ndx * sizeof(struct winbindd_gr)],
710 gr_mem_list, gr_mem_list_len);
712 SAFE_FREE(gr_mem_list);
714 state->response.length += gr_mem_list_len;
716 DEBUG(10, ("returning %d groups, length = %d\n",
717 group_list_ndx, gr_mem_list_len));
723 return (group_list_ndx > 0) ? WINBINDD_OK : WINBINDD_ERROR;
726 /* List domain groups without mapping to unix ids */
728 enum winbindd_result winbindd_list_groups(struct winbindd_cli_state *state)
730 uint32 total_entries = 0;
731 struct winbindd_domain *domain;
732 char *extra_data = NULL;
734 unsigned int extra_data_len = 0, i;
736 DEBUG(3, ("[%5d]: list groups\n", state->pid));
738 /* Enumerate over trusted domains */
740 for (domain = domain_list(); domain; domain = domain->next) {
741 struct getent_state groups;
745 /* Get list of sam groups */
747 fstrcpy(groups.domain_name, domain->name);
749 get_sam_group_entries(&groups);
751 if (groups.num_sam_entries == 0) {
752 /* this domain is empty or in an error state */
756 /* keep track the of the total number of groups seen so
757 far over all domains */
758 total_entries += groups.num_sam_entries;
760 /* Allocate some memory for extra data. Note that we limit
761 account names to sizeof(fstring) = 128 characters. */
762 ted = Realloc(extra_data, sizeof(fstring) * total_entries);
765 DEBUG(0,("failed to enlarge buffer!\n"));
766 SAFE_FREE(extra_data);
767 return WINBINDD_ERROR;
771 /* Pack group list into extra data fields */
772 for (i = 0; i < groups.num_sam_entries; i++) {
773 char *group_name = ((struct acct_info *)
774 groups.sam_entries)[i].acct_name;
777 fill_domain_username(name, domain->name, group_name);
778 /* Append to extra data */
779 memcpy(&extra_data[extra_data_len], name,
781 extra_data_len += strlen(name);
782 extra_data[extra_data_len++] = ',';
785 free(groups.sam_entries);
788 /* Assign extra_data fields in response structure */
790 extra_data[extra_data_len - 1] = '\0';
791 state->response.extra_data = extra_data;
792 state->response.length += extra_data_len;
795 /* No domains may have responded but that's still OK so don't
801 /* Get user supplementary groups. This is much quicker than trying to
802 invert the groups database. */
804 enum winbindd_result winbindd_getgroups(struct winbindd_cli_state *state)
806 fstring name_domain, name_user;
808 enum SID_NAME_USE name_type;
809 uint32 num_groups, num_gids;
812 struct winbindd_domain *domain;
813 enum winbindd_result result = WINBINDD_ERROR;
818 /* Ensure null termination */
819 state->request.data.username[sizeof(state->request.data.username)-1]='\0';
821 DEBUG(3, ("[%5d]: getgroups %s\n", state->pid,
822 state->request.data.username));
824 if (!(mem_ctx = talloc_init("winbindd_getgroups(%s)",
825 state->request.data.username)))
826 return WINBINDD_ERROR;
828 /* Parse domain and username */
830 if (!parse_domain_user(state->request.data.username, name_domain,
834 /* Get info for the domain */
836 if ((domain = find_domain_from_name(name_domain)) == NULL) {
837 DEBUG(0, ("could not find domain entry for domain %s\n",
842 /* Get rid and name type from name. The following costs 1 packet */
844 if (!winbindd_lookup_sid_by_name(domain, name_user, &user_sid,
846 DEBUG(1, ("user '%s' does not exist\n", name_user));
850 if (name_type != SID_NAME_USER) {
851 DEBUG(1, ("name '%s' is not a user name: %d\n",
852 name_user, name_type));
856 status = domain->methods->lookup_usergroups(domain, mem_ctx,
857 &user_sid, &num_groups,
859 if (!NT_STATUS_IS_OK(status)) goto done;
861 /* Copy data back to client */
864 gid_list = malloc(sizeof(gid_t) * num_groups);
866 if (state->response.extra_data)
869 for (i = 0; i < num_groups; i++) {
872 if (NT_STATUS_IS_ERR(sid_to_gid(user_gids[i], &gid))) {
875 DEBUG(1, ("unable to convert group sid %s to gid\n",
876 sid_to_string(sid_string, user_gids[i])));
879 gid_list[num_gids] = gid;
883 state->response.data.num_entries = num_gids;
884 state->response.extra_data = gid_list;
885 state->response.length += num_gids * sizeof(gid_t);
887 result = WINBINDD_OK;
891 talloc_destroy(mem_ctx);