2 Unix SMB/CIFS implementation.
4 Copyright Matthieu Patou <mat@matws.net> 2010-2011
5 Copyright Stefan Metzmacher 2011
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>.
22 #include "librpc/gen_ndr/dfsblobs.h"
23 #include "librpc/gen_ndr/ndr_dfsblobs.h"
24 #include "dsdb/samdb/samdb.h"
25 #include "auth/session.h"
26 #include "param/param.h"
27 #include "lib/tsocket/tsocket.h"
28 #include "dfs_server/dfs_server_ad.h"
29 #include "lib/util/util_net.h"
30 #include "libds/common/roles.h"
32 #define MAX_DFS_RESPONSE 56*1024 /* 56 Kb */
36 /* A DC set is a group of DC, they might have been grouped together
37 because they belong to the same site, or to site with same cost ...
44 static void shuffle_dc_set(struct dc_set *list)
48 for (i = list->count; i > 1; i--) {
52 r = generate_random() % i;
54 tmp = list->names[i - 1];
55 list->names[i - 1] = list->names[r];
61 fill a referral type structure
63 static NTSTATUS fill_normal_dfs_referraltype(TALLOC_CTX *mem_ctx,
64 struct dfs_referral_type *ref,
67 const char *server_path, int isfirstoffset)
72 ref->version = version;
73 /* For the moment there is a bug with XP that doesn't
74 * seem to appreciate much level4 so we return just
75 * level 3 for everyone
77 ref->referral.v4.server_type = DFS_SERVER_NON_ROOT;
78 /* "normal" referral seems to always include the GUID */
79 ref->referral.v4.size = 34;
82 ref->referral.v4.entry_flags = DFS_HEADER_FLAG_TARGET_BCK;
84 ref->referral.v4.ttl = 900; /* As w2k8r2 */
85 ref->referral.v4.referrals.r1.DFS_path = talloc_strdup(mem_ctx, dfs_path);
86 if (ref->referral.v4.referrals.r1.DFS_path == NULL) {
87 return NT_STATUS_NO_MEMORY;
89 ref->referral.v4.referrals.r1.DFS_alt_path = talloc_strdup(mem_ctx, dfs_path);
90 if (ref->referral.v4.referrals.r1.DFS_alt_path == NULL) {
91 return NT_STATUS_NO_MEMORY;
93 ref->referral.v4.referrals.r1.netw_address = talloc_strdup(mem_ctx, server_path);
94 if (ref->referral.v4.referrals.r1.netw_address == NULL) {
95 return NT_STATUS_NO_MEMORY;
99 ref->version = version;
100 ref->referral.v3.server_type = DFS_SERVER_NON_ROOT;
101 /* "normal" referral seems to always include the GUID */
102 ref->referral.v3.size = 34;
104 ref->referral.v3.entry_flags = 0;
105 ref->referral.v3.ttl = 600; /* As w2k3 */
106 ref->referral.v3.referrals.r1.DFS_path = talloc_strdup(mem_ctx, dfs_path);
107 if (ref->referral.v3.referrals.r1.DFS_path == NULL) {
108 return NT_STATUS_NO_MEMORY;
110 ref->referral.v3.referrals.r1.DFS_alt_path = talloc_strdup(mem_ctx, dfs_path);
111 if (ref->referral.v3.referrals.r1.DFS_alt_path == NULL) {
112 return NT_STATUS_NO_MEMORY;
114 ref->referral.v3.referrals.r1.netw_address = talloc_strdup(mem_ctx, server_path);
115 if (ref->referral.v3.referrals.r1.netw_address == NULL) {
116 return NT_STATUS_NO_MEMORY;
120 return NT_STATUS_INVALID_LEVEL;
124 fill a domain refererral
126 static NTSTATUS fill_domain_dfs_referraltype(TALLOC_CTX *mem_ctx,
127 struct dfs_referral_type *ref,
136 DEBUG(8, ("Called fill_domain_dfs_referraltype\n"));
137 ref->version = version;
138 ref->referral.v3.server_type = DFS_SERVER_NON_ROOT;
140 /* We use to have variable size, on Windows 2008R2 it's the same
141 * and it seems that it gives better results so ... let's use the same
144 * Additional note: XP SP2 will ask for version 3 and SP3 for version 4.
147 * It's hard coded ... don't think it's a good way but the
148 * sizeof return not the correct values
150 * We have 18 if the GUID is not included 34 otherwise
153 /* Windows return without the guid when returning domain list
155 ref->referral.v3.size = 18;
157 ref->referral.v3.size = 34;
160 /* As seen in w2k8r2 it always return the null GUID */
161 ref->referral.v3.size = 34;
162 ref->referral.v3.entry_flags = DFS_FLAG_REFERRAL_DOMAIN_RESP;
163 ref->referral.v3.ttl = 600; /* As w2k3 and w2k8r2*/
164 ref->referral.v3.referrals.r2.special_name = talloc_strdup(mem_ctx,
166 if (ref->referral.v3.referrals.r2.special_name == NULL) {
167 return NT_STATUS_NO_MEMORY;
169 ref->referral.v3.referrals.r2.nb_expanded_names = numnames;
170 /* Put the final terminator */
173 const char **names2 = talloc_array(mem_ctx, const char *,
175 NT_STATUS_HAVE_NO_MEMORY(names2);
176 for (i = 0; i<numnames; i++) {
177 names2[i] = talloc_asprintf(names2, "\\%s", names[i]);
178 NT_STATUS_HAVE_NO_MEMORY(names2[i]);
180 names2[numnames] = NULL;
181 ref->referral.v3.referrals.r2.expanded_names = names2;
185 return NT_STATUS_INVALID_LEVEL;
189 get the DCs list within a site
191 static NTSTATUS get_dcs_insite(TALLOC_CTX *ctx, struct ldb_context *ldb,
192 struct ldb_dn *sitedn, struct dc_set *list,
195 static const char *attrs[] = { "serverReference", NULL };
196 static const char *attrs2[] = { "dNSHostName", "sAMAccountName", NULL };
197 struct ldb_result *r;
200 const char **dc_list;
202 ret = ldb_search(ldb, ctx, &r, sitedn, LDB_SCOPE_SUBTREE, attrs,
203 "(&(objectClass=server)(serverReference=*))");
204 if (ret != LDB_SUCCESS) {
205 DEBUG(2,(__location__ ": Failed to get list of servers - %s\n",
206 ldb_errstring(ldb)));
207 return NT_STATUS_INTERNAL_ERROR;
211 /* none in this site */
217 * need to search for all server object to know the size of the array.
218 * Search all the object of class server in this site
220 dc_list = talloc_array(r, const char *, r->count);
221 if (dc_list == NULL) {
223 return NT_STATUS_NO_MEMORY;
226 /* TODO put some random here in the order */
227 list->names = talloc_realloc(list, list->names, const char *, list->count + r->count);
228 if (list->names == NULL) {
230 return NT_STATUS_NO_MEMORY;
233 for (i = 0; i<r->count; i++) {
235 struct ldb_message *msg;
237 dn = ldb_msg_find_attr_as_dn(ldb, ctx, r->msgs[i], "serverReference");
239 return NT_STATUS_INTERNAL_ERROR;
242 ret = dsdb_search_one(ldb, r, &msg, dn, LDB_SCOPE_BASE, attrs2, 0, "(objectClass=computer)");
243 if (ret != LDB_SUCCESS) {
244 DEBUG(2,(__location__ ": Search for computer on %s failed - %s\n",
245 ldb_dn_get_linearized(dn), ldb_errstring(ldb)));
246 return NT_STATUS_INTERNAL_ERROR;
250 const char *dns = ldb_msg_find_attr_as_string(msg, "dNSHostName", NULL);
252 DEBUG(2,(__location__ ": dNSHostName missing on %s\n",
253 ldb_dn_get_linearized(dn)));
255 return NT_STATUS_INTERNAL_ERROR;
258 list->names[list->count] = talloc_strdup(list->names, dns);
259 if (list->names[list->count] == NULL) {
261 return NT_STATUS_NO_MEMORY;
265 const char *aname = ldb_msg_find_attr_as_string(msg, "sAMAccountName", NULL);
267 DEBUG(2,(__location__ ": sAMAccountName missing on %s\n",
268 ldb_dn_get_linearized(dn)));
270 return NT_STATUS_INTERNAL_ERROR;
273 tmp = talloc_strdup(list->names, aname);
276 return NT_STATUS_NO_MEMORY;
279 /* Netbios name is also the sAMAccountName for
280 computer but without the final $ */
281 tmp[strlen(tmp) - 1] = '\0';
282 list->names[list->count] = tmp;
288 shuffle_dc_set(list);
298 static NTSTATUS get_dcs(TALLOC_CTX *ctx, struct ldb_context *ldb,
299 const char *searched_site, bool need_fqdn,
300 struct dc_set ***pset_list, uint32_t flags)
303 * Flags will be used later to indicate things like least-expensive
304 * or same-site options
306 const char *attrs_none[] = { NULL };
307 const char *attrs3[] = { "name", NULL };
308 struct ldb_dn *configdn, *sitedn, *dn, *sitescontainerdn;
309 struct ldb_result *r;
310 struct dc_set **set_list = NULL;
313 uint32_t current_pos = 0;
317 *pset_list = set_list = NULL;
319 subctx = talloc_new(ctx);
320 NT_STATUS_HAVE_NO_MEMORY(subctx);
322 configdn = ldb_get_config_basedn(ldb);
324 /* Let's search for the Site container */
325 ret = ldb_search(ldb, subctx, &r, configdn, LDB_SCOPE_SUBTREE, attrs_none,
326 "(objectClass=sitesContainer)");
327 if (ret != LDB_SUCCESS) {
328 DEBUG(2,(__location__ ": Failed to find sitesContainer within %s - %s\n",
329 ldb_dn_get_linearized(configdn), ldb_errstring(ldb)));
331 return NT_STATUS_INTERNAL_ERROR;
334 DEBUG(2,(__location__ ": Expected 1 sitesContainer - found %u within %s\n",
335 r->count, ldb_dn_get_linearized(configdn)));
337 return NT_STATUS_INTERNAL_ERROR;
340 sitescontainerdn = talloc_steal(subctx, r->msgs[0]->dn);
344 * TODO: Here we should have a more subtle handling
345 * for the case "same-site"
347 ret = ldb_search(ldb, subctx, &r, sitescontainerdn, LDB_SCOPE_SUBTREE,
348 attrs_none, "(objectClass=server)");
349 if (ret != LDB_SUCCESS) {
350 DEBUG(2,(__location__ ": Failed to find servers within %s - %s\n",
351 ldb_dn_get_linearized(sitescontainerdn), ldb_errstring(ldb)));
353 return NT_STATUS_INTERNAL_ERROR;
357 if (searched_site != NULL && searched_site[0] != '\0') {
358 ret = ldb_search(ldb, subctx, &r, configdn, LDB_SCOPE_SUBTREE,
359 attrs_none, "(&(name=%s)(objectClass=site))", searched_site);
360 if (ret != LDB_SUCCESS) {
362 return NT_STATUS_FOOBAR;
363 } else if (r->count != 1) {
365 return NT_STATUS_FOOBAR;
368 /* All of this was to get the DN of the searched_site */
369 sitedn = r->msgs[0]->dn;
372 * We will realloc + 2 because we will need one additional place
373 * for element at current_pos + 1 for the NULL element
375 set_list = talloc_realloc(subctx, set_list, struct dc_set *, current_pos+2);
376 if (set_list == NULL) {
378 return NT_STATUS_NO_MEMORY;
381 set_list[current_pos] = talloc(set_list, struct dc_set);
382 if (set_list[current_pos] == NULL) {
384 return NT_STATUS_NO_MEMORY;
387 set_list[current_pos]->names = NULL;
388 set_list[current_pos]->count = 0;
390 set_list[current_pos+1] = NULL;
392 status = get_dcs_insite(subctx, ldb, sitedn,
393 set_list[current_pos], need_fqdn);
394 if (!NT_STATUS_IS_OK(status)) {
395 DEBUG(2,(__location__ ": Failed to get DC from site %s - %s\n",
396 ldb_dn_get_linearized(sitedn), nt_errstr(status)));
404 /* Let's find all the sites */
405 ret = ldb_search(ldb, subctx, &r, configdn, LDB_SCOPE_SUBTREE, attrs3, "(objectClass=site)");
406 if (ret != LDB_SUCCESS) {
407 DEBUG(2,(__location__ ": Failed to find any site containers in %s\n",
408 ldb_dn_get_linearized(configdn)));
410 return NT_STATUS_INTERNAL_DB_CORRUPTION;
415 * We should randomize the order in the main site,
416 * it's mostly needed for sysvol/netlogon referral.
417 * Depending of flag we either randomize order of the
418 * not "in the same site DCs"
419 * or we randomize by group of site that have the same cost
420 * In the long run we want to manipulate an array of site_set
421 * All the site in one set have the same cost (if least-expansive options is selected)
422 * and we will put all the dc related to 1 site set into 1 DCs set.
423 * Within a site set, site order has to be randomized
425 * But for the moment we just return the list of sites
429 * We will realloc + 2 because we will need one additional place
430 * for element at current_pos + 1 for the NULL element
432 set_list = talloc_realloc(subctx, set_list, struct dc_set *,
434 if (set_list == NULL) {
436 return NT_STATUS_NO_MEMORY;
439 set_list[current_pos] = talloc(ctx, struct dc_set);
440 if (set_list[current_pos] == NULL) {
442 return NT_STATUS_NO_MEMORY;
445 set_list[current_pos]->names = NULL;
446 set_list[current_pos]->count = 0;
448 set_list[current_pos+1] = NULL;
451 for (i=0; i<r->count; i++) {
452 const char *site_name = ldb_msg_find_attr_as_string(r->msgs[i], "name", NULL);
453 if (site_name == NULL) {
454 DEBUG(2,(__location__ ": Failed to find name attribute in %s\n",
455 ldb_dn_get_linearized(r->msgs[i]->dn)));
457 return NT_STATUS_INTERNAL_DB_CORRUPTION;
460 if (searched_site == NULL ||
461 strcmp(searched_site, site_name) != 0) {
463 (__location__ ": Site: %s %s\n",
464 searched_site != NULL ? searched_site
469 * Do all the site but the one of the client
470 * (because it has already been done ...)
474 status = get_dcs_insite(subctx, ldb, dn,
475 set_list[current_pos],
477 if (!NT_STATUS_IS_OK(status)) {
484 *pset_list = talloc_move(ctx, &set_list);
489 static NTSTATUS dodomain_referral(struct loadparm_context *lp_ctx,
490 struct ldb_context *sam_ctx,
491 const struct tsocket_address *client,
492 struct dfs_GetDFSReferral *r)
495 * TODO for the moment we just return the local domain
498 const char *dns_domain = lpcfg_dnsdomain(lp_ctx);
499 const char *netbios_domain = lpcfg_workgroup(lp_ctx);
500 struct dfs_referral_type *referrals;
501 const char *referral_str;
502 /* In the future this needs to be fetched from the ldb */
503 uint32_t found_domain = 2;
505 if (lpcfg_server_role(lp_ctx) != ROLE_ACTIVE_DIRECTORY_DC) {
506 DEBUG(10 ,("Received a domain referral request on a non DC\n"));
507 return NT_STATUS_INVALID_PARAMETER;
510 if (r->in.req.max_referral_level < 3) {
511 DEBUG(2,("invalid max_referral_level %u\n",
512 r->in.req.max_referral_level));
513 return NT_STATUS_UNSUCCESSFUL;
516 r->out.resp = talloc_zero(r, struct dfs_referral_resp);
517 if (r->out.resp == NULL) {
518 return NT_STATUS_NO_MEMORY;
521 r->out.resp->path_consumed = 0;
522 r->out.resp->header_flags = 0; /* Do like w2k3 */
523 r->out.resp->nb_referrals = found_domain; /* the fqdn one + the NT domain */
525 referrals = talloc_zero_array(r->out.resp,
526 struct dfs_referral_type,
527 r->out.resp->nb_referrals);
528 if (referrals == NULL) {
529 return NT_STATUS_NO_MEMORY;
531 r->out.resp->referral_entries = referrals;
533 referral_str = talloc_asprintf(r, "\\%s", netbios_domain);
534 if (referral_str == NULL) {
535 return NT_STATUS_NO_MEMORY;
538 status = fill_domain_dfs_referraltype(referrals,
542 if (!NT_STATUS_IS_OK(status)) {
543 DEBUG(2,("%s: Unable to fill domain referral structure - %s\n",
544 __location__, nt_errstr(status)));
548 referral_str = talloc_asprintf(r, "\\%s", dns_domain);
549 if (referral_str == NULL) {
550 return NT_STATUS_NO_MEMORY;
553 status = fill_domain_dfs_referraltype(referrals,
557 if (!NT_STATUS_IS_OK(status)) {
558 DEBUG(2,("%s: Unable to fill domain referral structure - %s\n",
559 __location__, nt_errstr(status)));
567 * Handle the logic for dfs referral request like
568 * \\dns_domain or \\netbios_domain.
570 static NTSTATUS dodc_referral(struct loadparm_context *lp_ctx,
571 struct ldb_context *sam_ctx,
572 const struct tsocket_address *client,
573 struct dfs_GetDFSReferral *r,
574 const char *domain_name)
577 const char *site_name = NULL; /* Name of the site where the client is */
578 bool need_fqdn = false;
580 const char **dc_list = NULL;
581 uint32_t num_dcs = 0;
583 char *client_str = NULL;
584 struct dfs_referral_type *referrals;
585 const char *referral_str;
587 if (lpcfg_server_role(lp_ctx) != ROLE_ACTIVE_DIRECTORY_DC) {
588 return NT_STATUS_INVALID_PARAMETER;
591 if (r->in.req.max_referral_level < 3) {
592 DEBUG(2,("invalid max_referral_level %u\n",
593 r->in.req.max_referral_level));
594 return NT_STATUS_UNSUCCESSFUL;
597 DEBUG(10, ("in this we have request for %s requested is %s\n",
598 domain_name, r->in.req.servername));
600 if (strchr(domain_name,'.')) {
604 if (tsocket_address_is_inet(client, "ip")) {
605 client_str = tsocket_address_inet_addr_string(client, r);
606 if (client_str == NULL) {
607 return NT_STATUS_NO_MEMORY;
611 site_name = samdb_client_site_name(sam_ctx, r, client_str, NULL, true);
613 status = get_dcs(r, sam_ctx, site_name, need_fqdn, &set, 0);
614 if (!NT_STATUS_IS_OK(status)) {
615 DEBUG(3,("Unable to get list of DCs - %s\n",
620 for(i=0; set[i]; i++) {
623 dc_list = talloc_realloc(r, dc_list, const char*,
624 num_dcs + set[i]->count + 1);
625 if (dc_list == NULL) {
626 return NT_STATUS_NO_MEMORY;
629 for(j=0; j<set[i]->count; j++) {
630 dc_list[num_dcs + j] = talloc_move(dc_list,
633 num_dcs = num_dcs + set[i]->count;
635 dc_list[num_dcs] = NULL;
638 r->out.resp = talloc_zero(r, struct dfs_referral_resp);
639 if (r->out.resp == NULL) {
640 return NT_STATUS_NO_MEMORY;
643 r->out.resp->path_consumed = 0;
644 r->out.resp->header_flags = 0; /* Do like w2k3 */
645 r->out.resp->nb_referrals = 1;
647 referrals = talloc_zero_array(r->out.resp,
648 struct dfs_referral_type,
649 r->out.resp->nb_referrals);
650 if (referrals == NULL) {
651 return NT_STATUS_NO_MEMORY;
653 r->out.resp->referral_entries = referrals;
655 if (r->in.req.servername[0] == '\\') {
656 referral_str = talloc_asprintf(referrals, "%s",
659 referral_str = talloc_asprintf(referrals, "\\%s",
662 if (referral_str == NULL) {
663 return NT_STATUS_NO_MEMORY;
666 status = fill_domain_dfs_referraltype(referrals,
670 if (!NT_STATUS_IS_OK(status)) {
671 DEBUG(2,("%s: Unable to fill domain referral structure - %s\n",
672 __location__, nt_errstr(status)));
680 * Handle the logic for dfs referral request like
681 * \\domain\sysvol or \\domain\netlogon
683 static NTSTATUS dosysvol_referral(struct loadparm_context *lp_ctx,
684 struct ldb_context *sam_ctx,
685 const struct tsocket_address *client,
686 struct dfs_GetDFSReferral *r,
687 const char *domain_name,
688 const char *dfs_name)
690 const char *site_name = NULL; /* Name of the site where the client is */
691 bool need_fqdn = false;
692 unsigned int i, c = 0, nb_entries = 0;
694 char *client_str = NULL;
696 struct dfs_referral_type *referrals;
698 if (lpcfg_server_role(lp_ctx) != ROLE_ACTIVE_DIRECTORY_DC) {
699 return NT_STATUS_INVALID_PARAMETER;
702 if (r->in.req.max_referral_level < 3) {
703 DEBUG(2,("invalid max_referral_level %u\n",
704 r->in.req.max_referral_level));
705 return NT_STATUS_UNSUCCESSFUL;
708 DEBUG(10, ("in this we have request for %s and share %s requested is %s\n",
709 domain_name, dfs_name, r->in.req.servername));
711 if (strchr(domain_name,'.')) {
715 if (tsocket_address_is_inet(client, "ip")) {
716 client_str = tsocket_address_inet_addr_string(client, r);
717 if (client_str == NULL) {
718 return NT_STATUS_NO_MEMORY;
722 site_name = samdb_client_site_name(sam_ctx, r, client_str, NULL, true);
724 status = get_dcs(r, sam_ctx, site_name, need_fqdn, &set, 0);
725 if (!NT_STATUS_IS_OK(status)) {
726 DEBUG(3,("Unable to get list of DCs - %s\n",
731 for(i=0; set[i]; i++) {
732 nb_entries = nb_entries + set[i]->count;
735 r->out.resp = talloc_zero(r, struct dfs_referral_resp);
736 if (r->out.resp == NULL) {
737 return NT_STATUS_NO_MEMORY;
740 /* The length is expected in bytes */
741 r->out.resp->path_consumed = strlen_m(r->in.req.servername) * 2;
742 /* Do like w2k3 and like in 3.3.5.3 of MS-DFSC*/
743 r->out.resp->header_flags = DFS_HEADER_FLAG_STORAGE_SVR;
744 r->out.resp->nb_referrals = nb_entries;
746 referrals = talloc_zero_array(r->out.resp,
747 struct dfs_referral_type,
748 r->out.resp->nb_referrals);
749 if (referrals == NULL) {
750 return NT_STATUS_NO_MEMORY;
752 r->out.resp->referral_entries = referrals;
755 for(i=0; set[i]; i++) {
758 for(j=0; j< set[i]->count; j++) {
759 struct dfs_referral_type *ref = &referrals[c];
760 const char *referral_str;
762 referral_str = talloc_asprintf(referrals, "\\%s\\%s",
763 set[i]->names[j], dfs_name);
764 if (referral_str == NULL) {
765 return NT_STATUS_NO_MEMORY;
768 DEBUG(8,("Doing a dfs referral for %s with this value "
770 set[i]->names[j], referral_str,
771 r->in.req.servername));
773 status = fill_normal_dfs_referraltype(referrals, ref,
774 r->in.req.max_referral_level,
775 r->in.req.servername,
779 if (!NT_STATUS_IS_OK(status)) {
780 DEBUG(2,("%s: Unable to fill domain referral "
782 __location__, nt_errstr(status)));
794 trans2 getdfsreferral implementation
796 NTSTATUS dfs_server_ad_get_referrals(struct loadparm_context *lp_ctx,
797 struct ldb_context *sam_ctx,
798 const struct tsocket_address *client,
799 struct dfs_GetDFSReferral *r)
801 char *server_name = NULL;
802 char *dfs_name = NULL;
803 char *link_path = NULL;
804 const char *netbios_domain;
805 const char *dns_domain;
806 const char *netbios_name;
807 const char *dns_name;
808 const char **netbios_aliases;
811 if (!lpcfg_host_msdfs(lp_ctx)) {
812 return NT_STATUS_FS_DRIVER_REQUIRED;
815 if (r->in.req.servername == NULL) {
816 return NT_STATUS_INVALID_PARAMETER;
819 DEBUG(8, ("Requested DFS name: %s length: %u\n",
820 r->in.req.servername,
821 (unsigned int)strlen_m(r->in.req.servername)*2));
824 * If the servername is "" then we are in a case of domain dfs
825 * and the client just searches for the list of local domain
826 * it is attached and also trusted ones.
828 if (strlen(r->in.req.servername) == 0) {
829 return dodomain_referral(lp_ctx, sam_ctx, client, r);
832 server_name = talloc_strdup(r, r->in.req.servername);
833 if (server_name == NULL) {
834 return NT_STATUS_NO_MEMORY;
837 path_separator = (*server_name == '/') ? '/' : '\\';
839 while(*server_name && *server_name == path_separator) {
843 dfs_name = strchr_m(server_name, path_separator);
844 if (dfs_name != NULL) {
848 link_path = strchr_m(dfs_name, path_separator);
849 if (link_path != NULL) {
855 if (link_path != NULL) {
857 * If it is a DFS Link we do not
860 return NT_STATUS_NOT_FOUND;
863 netbios_domain = lpcfg_workgroup(lp_ctx);
864 dns_domain = lpcfg_dnsdomain(lp_ctx);
865 netbios_name = lpcfg_netbios_name(lp_ctx);
866 dns_name = talloc_asprintf(r, "%s.%s", netbios_name, dns_domain);
867 if (dns_name == NULL) {
868 return NT_STATUS_NO_MEMORY;
871 if ((strcasecmp_m(server_name, netbios_name) == 0) ||
872 (strcasecmp_m(server_name, dns_name) == 0)) {
874 * If it is not domain related do not
877 return NT_STATUS_NOT_FOUND;
880 if (is_ipaddress(server_name)) {
882 * If it is not domain related do not
885 return NT_STATUS_NOT_FOUND;
888 netbios_aliases = lpcfg_netbios_aliases(lp_ctx);
889 while (netbios_aliases && *netbios_aliases) {
890 const char *netbios_alias = *netbios_aliases;
894 cmp = strcasecmp_m(server_name, netbios_alias);
897 * If it is not domain related do not
900 return NT_STATUS_NOT_FOUND;
903 dns_alias = talloc_asprintf(r, "%s.%s",
906 if (dns_alias == NULL) {
907 return NT_STATUS_NO_MEMORY;
910 cmp = strcasecmp_m(server_name, dns_alias);
911 talloc_free(dns_alias);
914 * If it is not domain related do not
917 return NT_STATUS_NOT_FOUND;
922 if ((strcasecmp_m(server_name, netbios_domain) != 0) &&
923 (strcasecmp_m(server_name, dns_domain) != 0)) {
925 * Not a domain we handle.
927 return NT_STATUS_INVALID_PARAMETER;
931 * Here we have filtered the thing the requested name don't contain our DNS name.
932 * So if the share == NULL or if share in ("sysvol", "netlogon")
933 * then we proceed. In the first case it will be a dc refereal in the second it will
934 * be just a sysvol/netlogon referral.
936 if (dfs_name == NULL) {
937 return dodc_referral(lp_ctx, sam_ctx,
938 client, r, server_name);
942 * Here we have filtered the thing the requested name don't contain our DNS name.
943 * So if the share == NULL or if share in ("sysvol", "netlogon")
944 * then we proceed. In the first case it will be a dc refereal in the second it will
945 * be just a sysvol/netlogon referral.
947 if (strcasecmp(dfs_name, "sysvol") == 0 ||
948 strcasecmp(dfs_name, "netlogon") == 0) {
949 return dosysvol_referral(lp_ctx, sam_ctx, client, r,
950 server_name, dfs_name);
953 /* By default until all the case are handled */
954 return NT_STATUS_NOT_FOUND;