2 Unix SMB/CIFS implementation.
4 Copyright (C) Stefan Metzmacher <metze@samba.org> 2006
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 3 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, see <http://www.gnu.org/licenses/>.
21 #include "libnet/libnet.h"
22 #include "libcli/composite/composite.h"
23 #include "libcli/cldap/cldap.h"
24 #include "lib/ldb/include/ldb.h"
25 #include "lib/ldb/include/ldb_errors.h"
26 #include "lib/db_wrap.h"
27 #include "dsdb/samdb/samdb.h"
28 #include "dsdb/common/flags.h"
29 #include "librpc/gen_ndr/ndr_drsuapi_c.h"
31 /*****************************************************************************
32 * Windows 2003 (w2k3) does the following steps when changing the server role
33 * from domain controller back to domain member
35 * We mostly do the same.
36 *****************************************************************************/
40 * - using nbt name<1C> request and a samlogon mailslot request
42 * - using a DNS SRV _ldap._tcp.dc._msdcs. request and a CLDAP netlogon request
44 * see: unbecomeDC_send_cldap() and unbecomeDC_recv_cldap()
48 * Open 1st LDAP connection to the DC using admin credentials
50 * see: unbecomeDC_ldap_connect()
54 * LDAP search 1st LDAP connection:
56 * see: unbecomeDC_ldap_rootdse()
61 * filter: (objectClass=*)
62 * attrs: defaultNamingContext
63 * configurationNamingContext
66 * defaultNamingContext: <domain_partition>
67 * configurationNamingContext:CN=Configuration,<domain_partition>
71 * LDAP search 1st LDAP connection:
73 * see: unbecomeDC_ldap_computer_object()
76 * basedn: <domain_partition>
78 * filter: (&(|(objectClass=user)(objectClass=computer))(sAMAccountName=<new_dc_account_name>))
79 * attrs: distinguishedName
82 * CN=<new_dc_netbios_name>,CN=Domain Controllers,<domain_partition>
83 * distinguishedName: CN=<new_dc_netbios_name>,CN=Domain Controllers,<domain_partition>
84 * userAccoountControl: 532480 <0x82000>
88 * LDAP search 1st LDAP connection:
90 * see: unbecomeDC_ldap_modify_computer()
93 * basedn: CN=<new_dc_netbios_name>,CN=Computers,<domain_partition>
95 * filter: (objectClass=*)
96 * attrs: userAccountControl
98 * CN=<new_dc_netbios_name>,CN=Computers,<domain_partition>
99 * userAccoountControl: 532480 <0x82000>
103 * LDAP modify 1st LDAP connection:
105 * see: unbecomeDC_ldap_modify_computer()
108 * CN=<new_dc_netbios_name>,CN=Computers,<domain_partition>
109 * userAccoountControl: 4096 <0x1000>
115 * LDAP search 1st LDAP connection:
117 * see: unbecomeDC_ldap_move_computer()
120 * basedn: <WKGUID=aa312825768811d1aded00c04fd8d5cd,<domain_partition>>
122 * filter: (objectClass=*)
125 * CN=Computers,<domain_partition>
129 * LDAP search 1st LDAP connection:
131 * not implemented because it doesn't give any new information
134 * basedn: CN=Computers,<domain_partition>
136 * filter: (objectClass=*)
137 * attrs: distinguishedName
139 * CN=Computers,<domain_partition>
140 * distinguishedName: CN=Computers,<domain_partition>
144 * LDAP modifyRDN 1st LDAP connection:
146 * see: unbecomeDC_ldap_move_computer()
149 * entry: CN=<new_dc_netbios_name>,CN=Domain Controllers,<domain_partition>
150 * newrdn: CN=<new_dc_netbios_name>
152 * newparent: CN=Computers,<domain_partition>
158 * LDAP unbind on the 1st LDAP connection
160 * not implemented, because it's not needed...
164 * Open 1st DRSUAPI connection to the DC using admin credentials
165 * DsBind with DRSUAPI_DS_BIND_GUID ("e24d201a-4fd6-11d1-a3da-0000f875ae0d")
167 * see: unbecomeDC_drsuapi_connect_send(), unbecomeDC_drsuapi_connect_recv(),
168 * unbecomeDC_drsuapi_bind_send() and unbecomeDC_drsuapi_bind_recv()
172 * DsRemoveDsServer to remove the
173 * CN=<machine_name>,CN=Servers,CN=<site_name>,CN=Configuration,<domain_partition>
174 * and CN=NTDS Settings,CN=<machine_name>,CN=Servers,CN=<site_name>,CN=Configuration,<domain_partition>
175 * on the 1st DRSUAPI connection
177 * see: unbecomeDC_drsuapi_remove_ds_server_send() and unbecomeDC_drsuapi_remove_ds_server_recv()
181 * DsUnbind on the 1st DRSUAPI connection
183 * not implemented, because it's not needed...
187 struct libnet_UnbecomeDC_state {
188 struct composite_context *creq;
190 struct libnet_context *libnet;
193 struct cldap_socket *sock;
194 struct cldap_netlogon io;
195 struct nbt_cldap_netlogon_5 netlogon5;
199 struct ldb_context *ldb;
203 struct dcerpc_binding *binding;
204 struct dcerpc_pipe *pipe;
205 struct drsuapi_DsBind bind_r;
206 struct GUID bind_guid;
207 struct drsuapi_DsBindInfoCtr bind_info_ctr;
208 struct drsuapi_DsBindInfo28 local_info28;
209 struct drsuapi_DsBindInfo28 remote_info28;
210 struct policy_handle bind_handle;
211 struct drsuapi_DsRemoveDSServer rm_ds_srv_r;
216 const char *dns_name;
217 const char *netbios_name;
226 const char *config_dn_str;
234 const char *dns_name;
235 const char *netbios_name;
236 const char *site_name;
241 const char *netbios_name;
244 const char *dns_name;
245 const char *site_name;
246 const char *computer_dn_str;
247 const char *server_dn_str;
248 uint32_t user_account_control;
252 static void unbecomeDC_recv_cldap(struct cldap_request *req);
254 static void unbecomeDC_send_cldap(struct libnet_UnbecomeDC_state *s)
256 struct composite_context *c = s->creq;
257 struct cldap_request *req;
259 s->cldap.io.in.dest_address = s->source_dsa.address;
260 s->cldap.io.in.realm = s->domain.dns_name;
261 s->cldap.io.in.host = s->dest_dsa.netbios_name;
262 s->cldap.io.in.user = NULL;
263 s->cldap.io.in.domain_guid = NULL;
264 s->cldap.io.in.domain_sid = NULL;
265 s->cldap.io.in.acct_control = -1;
266 s->cldap.io.in.version = 6;
268 s->cldap.sock = cldap_socket_init(s, s->libnet->event_ctx);
269 if (composite_nomem(s->cldap.sock, c)) return;
271 req = cldap_netlogon_send(s->cldap.sock, &s->cldap.io);
272 if (composite_nomem(req, c)) return;
273 req->async.fn = unbecomeDC_recv_cldap;
274 req->async.private = s;
277 static void unbecomeDC_connect_ldap(struct libnet_UnbecomeDC_state *s);
279 static void unbecomeDC_recv_cldap(struct cldap_request *req)
281 struct libnet_UnbecomeDC_state *s = talloc_get_type(req->async.private,
282 struct libnet_UnbecomeDC_state);
283 struct composite_context *c = s->creq;
285 c->status = cldap_netlogon_recv(req, s, &s->cldap.io);
286 if (!composite_is_ok(c)) return;
288 s->cldap.netlogon5 = s->cldap.io.out.netlogon.logon5;
290 s->domain.dns_name = s->cldap.netlogon5.dns_domain;
291 s->domain.netbios_name = s->cldap.netlogon5.domain;
292 s->domain.guid = s->cldap.netlogon5.domain_uuid;
294 s->source_dsa.dns_name = s->cldap.netlogon5.pdc_dns_name;
295 s->source_dsa.netbios_name = s->cldap.netlogon5.pdc_name;
296 s->source_dsa.site_name = s->cldap.netlogon5.server_site;
298 s->dest_dsa.site_name = s->cldap.netlogon5.client_site;
300 unbecomeDC_connect_ldap(s);
303 static NTSTATUS unbecomeDC_ldap_connect(struct libnet_UnbecomeDC_state *s)
307 url = talloc_asprintf(s, "ldap://%s/", s->source_dsa.dns_name);
308 NT_STATUS_HAVE_NO_MEMORY(url);
310 s->ldap.ldb = ldb_wrap_connect(s, url,
315 if (s->ldap.ldb == NULL) {
316 return NT_STATUS_UNEXPECTED_NETWORK_ERROR;
322 static NTSTATUS unbecomeDC_ldap_rootdse(struct libnet_UnbecomeDC_state *s)
325 struct ldb_result *r;
326 struct ldb_dn *basedn;
327 static const char *attrs[] = {
328 "defaultNamingContext",
329 "configurationNamingContext",
333 basedn = ldb_dn_new(s, s->ldap.ldb, NULL);
334 NT_STATUS_HAVE_NO_MEMORY(basedn);
336 ret = ldb_search(s->ldap.ldb, basedn, LDB_SCOPE_BASE,
337 "(objectClass=*)", attrs, &r);
339 if (ret != LDB_SUCCESS) {
340 return NT_STATUS_LDAP(ret);
341 } else if (r->count != 1) {
343 return NT_STATUS_INVALID_NETWORK_RESPONSE;
347 s->domain.dn_str = ldb_msg_find_attr_as_string(r->msgs[0], "defaultNamingContext", NULL);
348 if (!s->domain.dn_str) return NT_STATUS_INVALID_NETWORK_RESPONSE;
349 talloc_steal(s, s->domain.dn_str);
351 s->forest.config_dn_str = ldb_msg_find_attr_as_string(r->msgs[0], "configurationNamingContext", NULL);
352 if (!s->forest.config_dn_str) return NT_STATUS_INVALID_NETWORK_RESPONSE;
353 talloc_steal(s, s->forest.config_dn_str);
355 s->dest_dsa.server_dn_str = talloc_asprintf(s, "CN=%s,CN=Servers,CN=%s,CN=Sites,%s",
356 s->dest_dsa.netbios_name,
357 s->dest_dsa.site_name,
358 s->forest.config_dn_str);
359 NT_STATUS_HAVE_NO_MEMORY(s->dest_dsa.server_dn_str);
365 static NTSTATUS unbecomeDC_ldap_computer_object(struct libnet_UnbecomeDC_state *s)
368 struct ldb_result *r;
369 struct ldb_dn *basedn;
371 static const char *attrs[] = {
373 "userAccountControl",
377 basedn = ldb_dn_new(s, s->ldap.ldb, s->domain.dn_str);
378 NT_STATUS_HAVE_NO_MEMORY(basedn);
380 filter = talloc_asprintf(basedn, "(&(|(objectClass=user)(objectClass=computer))(sAMAccountName=%s$))",
381 s->dest_dsa.netbios_name);
382 NT_STATUS_HAVE_NO_MEMORY(filter);
384 ret = ldb_search(s->ldap.ldb, basedn, LDB_SCOPE_SUBTREE,
387 if (ret != LDB_SUCCESS) {
388 return NT_STATUS_LDAP(ret);
389 } else if (r->count != 1) {
391 return NT_STATUS_INVALID_NETWORK_RESPONSE;
394 s->dest_dsa.computer_dn_str = samdb_result_string(r->msgs[0], "distinguishedName", NULL);
395 if (!s->dest_dsa.computer_dn_str) return NT_STATUS_INVALID_NETWORK_RESPONSE;
396 talloc_steal(s, s->dest_dsa.computer_dn_str);
398 s->dest_dsa.user_account_control = samdb_result_uint(r->msgs[0], "userAccountControl", 0);
404 static NTSTATUS unbecomeDC_ldap_modify_computer(struct libnet_UnbecomeDC_state *s)
407 struct ldb_message *msg;
408 uint32_t user_account_control = UF_WORKSTATION_TRUST_ACCOUNT;
411 /* as the value is already as we want it to be, we're done */
412 if (s->dest_dsa.user_account_control == user_account_control) {
416 /* make a 'modify' msg, and only for serverReference */
417 msg = ldb_msg_new(s);
418 NT_STATUS_HAVE_NO_MEMORY(msg);
419 msg->dn = ldb_dn_new(msg, s->ldap.ldb, s->dest_dsa.computer_dn_str);
420 NT_STATUS_HAVE_NO_MEMORY(msg->dn);
422 ret = ldb_msg_add_fmt(msg, "userAccountControl", "%u", user_account_control);
425 return NT_STATUS_NO_MEMORY;
428 /* mark all the message elements (should be just one)
429 as LDB_FLAG_MOD_REPLACE */
430 for (i=0;i<msg->num_elements;i++) {
431 msg->elements[i].flags = LDB_FLAG_MOD_REPLACE;
434 ret = ldb_modify(s->ldap.ldb, msg);
436 if (ret != LDB_SUCCESS) {
437 return NT_STATUS_LDAP(ret);
440 s->dest_dsa.user_account_control = user_account_control;
445 static NTSTATUS unbecomeDC_ldap_move_computer(struct libnet_UnbecomeDC_state *s)
448 struct ldb_result *r;
449 struct ldb_dn *basedn;
450 struct ldb_dn *old_dn;
451 struct ldb_dn *new_dn;
452 static const char *_1_1_attrs[] = {
457 basedn = ldb_dn_new_fmt(s, s->ldap.ldb, "<WKGUID=aa312825768811d1aded00c04fd8d5cd,%s>",
459 NT_STATUS_HAVE_NO_MEMORY(basedn);
461 ret = ldb_search(s->ldap.ldb, basedn, LDB_SCOPE_BASE,
462 "(objectClass=*)", _1_1_attrs, &r);
464 if (ret != LDB_SUCCESS) {
465 return NT_STATUS_LDAP(ret);
466 } else if (r->count != 1) {
468 return NT_STATUS_INVALID_NETWORK_RESPONSE;
471 old_dn = ldb_dn_new(r, s->ldap.ldb, s->dest_dsa.computer_dn_str);
472 NT_STATUS_HAVE_NO_MEMORY(old_dn);
474 new_dn = r->msgs[0]->dn;
476 if (!ldb_dn_add_child_fmt(new_dn, "CN=%s", s->dest_dsa.netbios_name)) {
478 return NT_STATUS_NO_MEMORY;
481 if (ldb_dn_compare(old_dn, new_dn) == 0) {
482 /* we don't need to rename if the old and new dn match */
487 ret = ldb_rename(s->ldap.ldb, old_dn, new_dn);
488 if (ret != LDB_SUCCESS) {
490 return NT_STATUS_LDAP(ret);
493 s->dest_dsa.computer_dn_str = ldb_dn_alloc_linearized(s, new_dn);
494 NT_STATUS_HAVE_NO_MEMORY(s->dest_dsa.computer_dn_str);
501 static void unbecomeDC_drsuapi_connect_send(struct libnet_UnbecomeDC_state *s);
503 static void unbecomeDC_connect_ldap(struct libnet_UnbecomeDC_state *s)
505 struct composite_context *c = s->creq;
507 c->status = unbecomeDC_ldap_connect(s);
508 if (!composite_is_ok(c)) return;
510 c->status = unbecomeDC_ldap_rootdse(s);
511 if (!composite_is_ok(c)) return;
513 c->status = unbecomeDC_ldap_computer_object(s);
514 if (!composite_is_ok(c)) return;
516 c->status = unbecomeDC_ldap_modify_computer(s);
517 if (!composite_is_ok(c)) return;
519 c->status = unbecomeDC_ldap_move_computer(s);
520 if (!composite_is_ok(c)) return;
522 unbecomeDC_drsuapi_connect_send(s);
525 static void unbecomeDC_drsuapi_connect_recv(struct composite_context *creq);
527 static void unbecomeDC_drsuapi_connect_send(struct libnet_UnbecomeDC_state *s)
529 struct composite_context *c = s->creq;
530 struct composite_context *creq;
533 binding_str = talloc_asprintf(s, "ncacn_ip_tcp:%s[seal]", s->source_dsa.dns_name);
534 if (composite_nomem(binding_str, c)) return;
536 c->status = dcerpc_parse_binding(s, binding_str, &s->drsuapi.binding);
537 talloc_free(binding_str);
538 if (!composite_is_ok(c)) return;
540 creq = dcerpc_pipe_connect_b_send(s, s->drsuapi.binding, &dcerpc_table_drsuapi,
541 s->libnet->cred, s->libnet->event_ctx);
542 composite_continue(c, creq, unbecomeDC_drsuapi_connect_recv, s);
545 static void unbecomeDC_drsuapi_bind_send(struct libnet_UnbecomeDC_state *s);
547 static void unbecomeDC_drsuapi_connect_recv(struct composite_context *req)
549 struct libnet_UnbecomeDC_state *s = talloc_get_type(req->async.private_data,
550 struct libnet_UnbecomeDC_state);
551 struct composite_context *c = s->creq;
553 c->status = dcerpc_pipe_connect_b_recv(req, s, &s->drsuapi.pipe);
554 if (!composite_is_ok(c)) return;
556 unbecomeDC_drsuapi_bind_send(s);
559 static void unbecomeDC_drsuapi_bind_recv(struct rpc_request *req);
561 static void unbecomeDC_drsuapi_bind_send(struct libnet_UnbecomeDC_state *s)
563 struct composite_context *c = s->creq;
564 struct rpc_request *req;
565 struct drsuapi_DsBindInfo28 *bind_info28;
567 GUID_from_string(DRSUAPI_DS_BIND_GUID, &s->drsuapi.bind_guid);
569 bind_info28 = &s->drsuapi.local_info28;
570 bind_info28->supported_extensions = 0;
571 bind_info28->site_guid = GUID_zero();
572 bind_info28->u1 = 508;
573 bind_info28->repl_epoch = 0;
575 s->drsuapi.bind_info_ctr.length = 28;
576 s->drsuapi.bind_info_ctr.info.info28 = *bind_info28;
578 s->drsuapi.bind_r.in.bind_guid = &s->drsuapi.bind_guid;
579 s->drsuapi.bind_r.in.bind_info = &s->drsuapi.bind_info_ctr;
580 s->drsuapi.bind_r.out.bind_handle = &s->drsuapi.bind_handle;
582 req = dcerpc_drsuapi_DsBind_send(s->drsuapi.pipe, s, &s->drsuapi.bind_r);
583 composite_continue_rpc(c, req, unbecomeDC_drsuapi_bind_recv, s);
586 static void unbecomeDC_drsuapi_remove_ds_server_send(struct libnet_UnbecomeDC_state *s);
588 static void unbecomeDC_drsuapi_bind_recv(struct rpc_request *req)
590 struct libnet_UnbecomeDC_state *s = talloc_get_type(req->async.private_data,
591 struct libnet_UnbecomeDC_state);
592 struct composite_context *c = s->creq;
594 c->status = dcerpc_ndr_request_recv(req);
595 if (!composite_is_ok(c)) return;
597 if (!W_ERROR_IS_OK(s->drsuapi.bind_r.out.result)) {
598 composite_error(c, werror_to_ntstatus(s->drsuapi.bind_r.out.result));
602 ZERO_STRUCT(s->drsuapi.remote_info28);
603 if (s->drsuapi.bind_r.out.bind_info) {
604 switch (s->drsuapi.bind_r.out.bind_info->length) {
606 struct drsuapi_DsBindInfo24 *info24;
607 info24 = &s->drsuapi.bind_r.out.bind_info->info.info24;
608 s->drsuapi.remote_info28.supported_extensions = info24->supported_extensions;
609 s->drsuapi.remote_info28.site_guid = info24->site_guid;
610 s->drsuapi.remote_info28.u1 = info24->u1;
611 s->drsuapi.remote_info28.repl_epoch = 0;
615 s->drsuapi.remote_info28 = s->drsuapi.bind_r.out.bind_info->info.info28;
620 unbecomeDC_drsuapi_remove_ds_server_send(s);
623 static void unbecomeDC_drsuapi_remove_ds_server_recv(struct rpc_request *req);
625 static void unbecomeDC_drsuapi_remove_ds_server_send(struct libnet_UnbecomeDC_state *s)
627 struct composite_context *c = s->creq;
628 struct rpc_request *req;
629 struct drsuapi_DsRemoveDSServer *r = &s->drsuapi.rm_ds_srv_r;
631 r->in.bind_handle = &s->drsuapi.bind_handle;
633 r->in.req.req1.server_dn= s->dest_dsa.server_dn_str;
634 r->in.req.req1.domain_dn= s->domain.dn_str;
635 r->in.req.req1.unknown = 0x00000001;
637 req = dcerpc_drsuapi_DsRemoveDSServer_send(s->drsuapi.pipe, s, r);
638 composite_continue_rpc(c, req, unbecomeDC_drsuapi_remove_ds_server_recv, s);
641 static void unbecomeDC_drsuapi_remove_ds_server_recv(struct rpc_request *req)
643 struct libnet_UnbecomeDC_state *s = talloc_get_type(req->async.private_data,
644 struct libnet_UnbecomeDC_state);
645 struct composite_context *c = s->creq;
646 struct drsuapi_DsRemoveDSServer *r = &s->drsuapi.rm_ds_srv_r;
648 c->status = dcerpc_ndr_request_recv(req);
649 if (!composite_is_ok(c)) return;
651 if (!W_ERROR_IS_OK(r->out.result)) {
652 composite_error(c, werror_to_ntstatus(r->out.result));
656 if (r->out.level != 1) {
657 composite_error(c, NT_STATUS_INVALID_NETWORK_RESPONSE);
661 if (!W_ERROR_IS_OK(r->out.res.res1.status)) {
662 composite_error(c, werror_to_ntstatus(r->out.res.res1.status));
669 struct composite_context *libnet_UnbecomeDC_send(struct libnet_context *ctx, TALLOC_CTX *mem_ctx, struct libnet_UnbecomeDC *r)
671 struct composite_context *c;
672 struct libnet_UnbecomeDC_state *s;
675 c = composite_create(mem_ctx, ctx->event_ctx);
676 if (c == NULL) return NULL;
678 s = talloc_zero(c, struct libnet_UnbecomeDC_state);
679 if (composite_nomem(s, c)) return c;
685 s->domain.dns_name = talloc_strdup(s, r->in.domain_dns_name);
686 if (composite_nomem(s->domain.dns_name, c)) return c;
687 s->domain.netbios_name = talloc_strdup(s, r->in.domain_netbios_name);
688 if (composite_nomem(s->domain.netbios_name, c)) return c;
690 /* Source DSA input */
691 s->source_dsa.address = talloc_strdup(s, r->in.source_dsa_address);
692 if (composite_nomem(s->source_dsa.address, c)) return c;
694 /* Destination DSA input */
695 s->dest_dsa.netbios_name= talloc_strdup(s, r->in.dest_dsa_netbios_name);
696 if (composite_nomem(s->dest_dsa.netbios_name, c)) return c;
698 /* Destination DSA dns_name construction */
699 tmp_name = strlower_talloc(s, s->dest_dsa.netbios_name);
700 if (composite_nomem(tmp_name, c)) return c;
701 s->dest_dsa.dns_name = talloc_asprintf_append(tmp_name, ".%s",
703 if (composite_nomem(s->dest_dsa.dns_name, c)) return c;
705 unbecomeDC_send_cldap(s);
709 NTSTATUS libnet_UnbecomeDC_recv(struct composite_context *c, TALLOC_CTX *mem_ctx, struct libnet_UnbecomeDC *r)
713 status = composite_wait(c);
721 NTSTATUS libnet_UnbecomeDC(struct libnet_context *ctx, TALLOC_CTX *mem_ctx, struct libnet_UnbecomeDC *r)
724 struct composite_context *c;
725 c = libnet_UnbecomeDC_send(ctx, mem_ctx, r);
726 status = libnet_UnbecomeDC_recv(c, mem_ctx, r);