source4/libnet/libnet_unbecome_dc.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    Copyright (C) Stefan Metzmacher <metze@samba.org> 2006
   5
   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.
  10
  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.
  15
  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/>.
  18 */
  19
  20 #include "includes.h"
  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/ldb_wrap.h"
  27 #include "dsdb/samdb/samdb.h"
  28 #include "dsdb/common/flags.h"
  29 #include "librpc/gen_ndr/ndr_drsuapi_c.h"
  30 #include "param/param.h"
  31
  32 /*****************************************************************************
  33  * Windows 2003 (w2k3) does the following steps when changing the server role
  34  * from domain controller back to domain member
  35  *
  36  * We mostly do the same.
  37  *****************************************************************************/
  38
  39 /*
  40  * lookup DC:
  41  * - using nbt name<1C> request and a samlogon mailslot request
  42  * or
  43  * - using a DNS SRV _ldap._tcp.dc._msdcs. request and a CLDAP netlogon request
  44  *
  45  * see: unbecomeDC_send_cldap() and unbecomeDC_recv_cldap()
  46  */
  47
  48 /*
  49  * Open 1st LDAP connection to the DC using admin credentials
  50  *
  51  * see: unbecomeDC_ldap_connect()
  52  */
  53
  54 /*
  55  * LDAP search 1st LDAP connection:
  56  *
  57  * see: unbecomeDC_ldap_rootdse()
  58  *
  59  * Request:
  60  *      basedn: ""
  61  *      scope:  base
  62  *      filter: (objectClass=*)
  63  *      attrs:  defaultNamingContext
  64  *              configurationNamingContext
  65  * Result:
  66  *      ""
  67  *              defaultNamingContext:   <domain_partition>
  68  *              configurationNamingContext:CN=Configuration,<domain_partition>
  69  */
  70
  71 /*
  72  * LDAP search 1st LDAP connection:
  73  *
  74  * see: unbecomeDC_ldap_computer_object()
  75  *
  76  * Request:
  77  *      basedn: <domain_partition>
  78  *      scope:  sub
  79  *      filter: (&(|(objectClass=user)(objectClass=computer))(sAMAccountName=<new_dc_account_name>))
  80  *      attrs:  distinguishedName
  81  *              userAccountControl
  82  * Result:
  83  *      CN=<new_dc_netbios_name>,CN=Domain Controllers,<domain_partition>
  84  *              distinguishedName:      CN=<new_dc_netbios_name>,CN=Domain Controllers,<domain_partition>
  85  *              userAccoountControl:    532480 <0x82000>
  86  */
  87
  88 /*
  89  * LDAP search 1st LDAP connection:
  90  *
  91  * see: unbecomeDC_ldap_modify_computer()
  92  *
  93  * Request:
  94  *      basedn: CN=<new_dc_netbios_name>,CN=Computers,<domain_partition>
  95  *      scope:  base
  96  *      filter: (objectClass=*)
  97  *      attrs:  userAccountControl
  98  * Result:
  99  *      CN=<new_dc_netbios_name>,CN=Computers,<domain_partition>
 100  *              userAccoountControl:    532480 <0x82000>
 101  */
 102
 103 /*
 104  * LDAP modify 1st LDAP connection:
 105  *
 106  * see: unbecomeDC_ldap_modify_computer()
 107  *
 108  * Request (replace):
 109  *      CN=<new_dc_netbios_name>,CN=Computers,<domain_partition>
 110  *      userAccoountControl:    4096 <0x1000>
 111  * Result:
 112  *      <success>
 113  */
 114
 115 /*
 116  * LDAP search 1st LDAP connection:
 117  *
 118  * see: unbecomeDC_ldap_move_computer()
 119  *
 120  * Request:
 121  *      basedn: <WKGUID=aa312825768811d1aded00c04fd8d5cd,<domain_partition>>
 122  *      scope:  base
 123  *      filter: (objectClass=*)
 124  *      attrs:  1.1
 125  * Result:
 126  *      CN=Computers,<domain_partition>
 127  */
 128
 129 /*
 130  * LDAP search 1st LDAP connection:
 131  *
 132  * not implemented because it doesn't give any new information
 133  *
 134  * Request:
 135  *      basedn: CN=Computers,<domain_partition>
 136  *      scope:  base
 137  *      filter: (objectClass=*)
 138  *      attrs:  distinguishedName
 139  * Result:
 140  *      CN=Computers,<domain_partition>
 141  *              distinguishedName:      CN=Computers,<domain_partition>
 142  */
 143
 144 /*
 145  * LDAP modifyRDN 1st LDAP connection:
 146  *
 147  * see: unbecomeDC_ldap_move_computer()
 148  *
 149  * Request:
 150  *      entry:          CN=<new_dc_netbios_name>,CN=Domain Controllers,<domain_partition>
 151  *      newrdn:         CN=<new_dc_netbios_name>
 152  *      deleteoldrdn:   TRUE
 153  *      newparent:      CN=Computers,<domain_partition>
 154  * Result:
 155  *      <success>
 156  */
 157
 158 /*
 159  * LDAP unbind on the 1st LDAP connection
 160  *
 161  * not implemented, because it's not needed...
 162  */
 163
 164 /*
 165  * Open 1st DRSUAPI connection to the DC using admin credentials
 166  * DsBind with DRSUAPI_DS_BIND_GUID ("e24d201a-4fd6-11d1-a3da-0000f875ae0d")
 167  *
 168  * see: unbecomeDC_drsuapi_connect_send(), unbecomeDC_drsuapi_connect_recv(),
 169  *      unbecomeDC_drsuapi_bind_send() and unbecomeDC_drsuapi_bind_recv()
 170  */
 171
 172 /*
 173  * DsRemoveDsServer to remove the
 174  * CN=<machine_name>,CN=Servers,CN=<site_name>,CN=Configuration,<domain_partition>
 175  * and CN=NTDS Settings,CN=<machine_name>,CN=Servers,CN=<site_name>,CN=Configuration,<domain_partition>
 176  * on the 1st DRSUAPI connection
 177  *
 178  * see: unbecomeDC_drsuapi_remove_ds_server_send() and unbecomeDC_drsuapi_remove_ds_server_recv()
 179  */
 180
 181 /*
 182  * DsUnbind on the 1st DRSUAPI connection
 183  *
 184  * not implemented, because it's not needed...
 185  */
 186
 187
 188 struct libnet_UnbecomeDC_state {
 189         struct composite_context *creq;
 190
 191         struct libnet_context *libnet;
 192
 193         struct {
 194                 struct cldap_socket *sock;
 195                 struct cldap_netlogon io;
 196                 struct nbt_cldap_netlogon_5 netlogon5;
 197         } cldap;
 198
 199         struct {
 200                 struct ldb_context *ldb;
 201         } ldap;
 202
 203         struct {
 204                 struct dcerpc_binding *binding;
 205                 struct dcerpc_pipe *pipe;
 206                 struct drsuapi_DsBind bind_r;
 207                 struct GUID bind_guid;
 208                 struct drsuapi_DsBindInfoCtr bind_info_ctr;
 209                 struct drsuapi_DsBindInfo28 local_info28;
 210                 struct drsuapi_DsBindInfo28 remote_info28;
 211                 struct policy_handle bind_handle;
 212                 struct drsuapi_DsRemoveDSServer rm_ds_srv_r;
 213         } drsuapi;
 214
 215         struct {
 216                 /* input */
 217                 const char *dns_name;
 218                 const char *netbios_name;
 219
 220                 /* constructed */
 221                 struct GUID guid;
 222                 const char *dn_str;
 223         } domain;
 224
 225         struct {
 226                 /* constructed */
 227                 const char *config_dn_str;
 228         } forest;
 229
 230         struct {
 231                 /* input */
 232                 const char *address;
 233
 234                 /* constructed */
 235                 const char *dns_name;
 236                 const char *netbios_name;
 237                 const char *site_name;
 238         } source_dsa;
 239
 240         struct {
 241                 /* input */
 242                 const char *netbios_name;
 243
 244                 /* constructed */
 245                 const char *dns_name;
 246                 const char *site_name;
 247                 const char *computer_dn_str;
 248                 const char *server_dn_str;
 249                 uint32_t user_account_control;
 250         } dest_dsa;
 251 };
 252
 253 static void unbecomeDC_recv_cldap(struct cldap_request *req);
 254
 255 static void unbecomeDC_send_cldap(struct libnet_UnbecomeDC_state *s)
 256 {
 257         struct composite_context *c = s->creq;
 258         struct cldap_request *req;
 259
 260         s->cldap.io.in.dest_address     = s->source_dsa.address;
 261         s->cldap.io.in.dest_port        = lp_cldap_port(s->libnet->lp_ctx);
 262         s->cldap.io.in.realm            = s->domain.dns_name;
 263         s->cldap.io.in.host             = s->dest_dsa.netbios_name;
 264         s->cldap.io.in.user             = NULL;
 265         s->cldap.io.in.domain_guid      = NULL;
 266         s->cldap.io.in.domain_sid       = NULL;
 267         s->cldap.io.in.acct_control     = -1;
 268         s->cldap.io.in.version          = 6;
 269
 270         s->cldap.sock = cldap_socket_init(s, s->libnet->event_ctx);
 271         if (composite_nomem(s->cldap.sock, c)) return;
 272
 273         req = cldap_netlogon_send(s->cldap.sock, &s->cldap.io);
 274         if (composite_nomem(req, c)) return;
 275         req->async.fn           = unbecomeDC_recv_cldap;
 276         req->async.private      = s;
 277 }
 278
 279 static void unbecomeDC_connect_ldap(struct libnet_UnbecomeDC_state *s);
 280
 281 static void unbecomeDC_recv_cldap(struct cldap_request *req)
 282 {
 283         struct libnet_UnbecomeDC_state *s = talloc_get_type(req->async.private,
 284                                             struct libnet_UnbecomeDC_state);
 285         struct composite_context *c = s->creq;
 286
 287         c->status = cldap_netlogon_recv(req, s, &s->cldap.io);
 288         if (!composite_is_ok(c)) return;
 289
 290         s->cldap.netlogon5 = s->cldap.io.out.netlogon.logon5;
 291
 292         s->domain.dns_name              = s->cldap.netlogon5.dns_domain;
 293         s->domain.netbios_name          = s->cldap.netlogon5.domain;
 294         s->domain.guid                  = s->cldap.netlogon5.domain_uuid;
 295
 296         s->source_dsa.dns_name          = s->cldap.netlogon5.pdc_dns_name;
 297         s->source_dsa.netbios_name      = s->cldap.netlogon5.pdc_name;
 298         s->source_dsa.site_name         = s->cldap.netlogon5.server_site;
 299
 300         s->dest_dsa.site_name           = s->cldap.netlogon5.client_site;
 301
 302         unbecomeDC_connect_ldap(s);
 303 }
 304
 305 static NTSTATUS unbecomeDC_ldap_connect(struct libnet_UnbecomeDC_state *s)
 306 {
 307         char *url;
 308
 309         url = talloc_asprintf(s, "ldap://%s/", s->source_dsa.dns_name);
 310         NT_STATUS_HAVE_NO_MEMORY(url);
 311
 312         s->ldap.ldb = ldb_wrap_connect(s, s->libnet->lp_ctx, url,
 313                                        NULL,
 314                                        s->libnet->cred,
 315                                        0, NULL);
 316         talloc_free(url);
 317         if (s->ldap.ldb == NULL) {
 318                 return NT_STATUS_UNEXPECTED_NETWORK_ERROR;
 319         }
 320
 321         return NT_STATUS_OK;
 322 }
 323
 324 static NTSTATUS unbecomeDC_ldap_rootdse(struct libnet_UnbecomeDC_state *s)
 325 {
 326         int ret;
 327         struct ldb_result *r;
 328         struct ldb_dn *basedn;
 329         const char *attrs[] = {
 330                 "defaultNamingContext",
 331                 "configurationNamingContext",
 332                 NULL
 333         };
 334
 335         basedn = ldb_dn_new(s, s->ldap.ldb, NULL);
 336         NT_STATUS_HAVE_NO_MEMORY(basedn);
 337
 338         ret = ldb_search(s->ldap.ldb, basedn, LDB_SCOPE_BASE,
 339                          "(objectClass=*)", attrs, &r);
 340         talloc_free(basedn);
 341         if (ret != LDB_SUCCESS) {
 342                 return NT_STATUS_LDAP(ret);
 343         } else if (r->count != 1) {
 344                 talloc_free(r);
 345                 return NT_STATUS_INVALID_NETWORK_RESPONSE;
 346         }
 347         talloc_steal(s, r);
 348
 349         s->domain.dn_str        = ldb_msg_find_attr_as_string(r->msgs[0], "defaultNamingContext", NULL);
 350         if (!s->domain.dn_str) return NT_STATUS_INVALID_NETWORK_RESPONSE;
 351         talloc_steal(s, s->domain.dn_str);
 352
 353         s->forest.config_dn_str = ldb_msg_find_attr_as_string(r->msgs[0], "configurationNamingContext", NULL);
 354         if (!s->forest.config_dn_str) return NT_STATUS_INVALID_NETWORK_RESPONSE;
 355         talloc_steal(s, s->forest.config_dn_str);
 356
 357         s->dest_dsa.server_dn_str = talloc_asprintf(s, "CN=%s,CN=Servers,CN=%s,CN=Sites,%s",
 358                                                     s->dest_dsa.netbios_name,
 359                                                     s->dest_dsa.site_name,
 360                                                     s->forest.config_dn_str);
 361         NT_STATUS_HAVE_NO_MEMORY(s->dest_dsa.server_dn_str);
 362
 363         talloc_free(r);
 364         return NT_STATUS_OK;
 365 }
 366
 367 static NTSTATUS unbecomeDC_ldap_computer_object(struct libnet_UnbecomeDC_state *s)
 368 {
 369         int ret;
 370         struct ldb_result *r;
 371         struct ldb_dn *basedn;
 372         char *filter;
 373         const char *attrs[] = {
 374                 "distinguishedName",
 375                 "userAccountControl",
 376                 NULL
 377         };
 378
 379         basedn = ldb_dn_new(s, s->ldap.ldb, s->domain.dn_str);
 380         NT_STATUS_HAVE_NO_MEMORY(basedn);
 381
 382         filter = talloc_asprintf(basedn, "(&(|(objectClass=user)(objectClass=computer))(sAMAccountName=%s$))",
 383                                  s->dest_dsa.netbios_name);
 384         NT_STATUS_HAVE_NO_MEMORY(filter);
 385
 386         ret = ldb_search(s->ldap.ldb, basedn, LDB_SCOPE_SUBTREE,
 387                          filter, attrs, &r);
 388         talloc_free(basedn);
 389         if (ret != LDB_SUCCESS) {
 390                 return NT_STATUS_LDAP(ret);
 391         } else if (r->count != 1) {
 392                 talloc_free(r);
 393                 return NT_STATUS_INVALID_NETWORK_RESPONSE;
 394         }
 395
 396         s->dest_dsa.computer_dn_str     = samdb_result_string(r->msgs[0], "distinguishedName", NULL);
 397         if (!s->dest_dsa.computer_dn_str) return NT_STATUS_INVALID_NETWORK_RESPONSE;
 398         talloc_steal(s, s->dest_dsa.computer_dn_str);
 399
 400         s->dest_dsa.user_account_control = samdb_result_uint(r->msgs[0], "userAccountControl", 0);
 401
 402         talloc_free(r);
 403         return NT_STATUS_OK;
 404 }
 405
 406 static NTSTATUS unbecomeDC_ldap_modify_computer(struct libnet_UnbecomeDC_state *s)
 407 {
 408         int ret;
 409         struct ldb_message *msg;
 410         uint32_t user_account_control = UF_WORKSTATION_TRUST_ACCOUNT;
 411         uint32_t i;
 412
 413         /* as the value is already as we want it to be, we're done */
 414         if (s->dest_dsa.user_account_control == user_account_control) {
 415                 return NT_STATUS_OK;
 416         }
 417
 418         /* make a 'modify' msg, and only for serverReference */
 419         msg = ldb_msg_new(s);
 420         NT_STATUS_HAVE_NO_MEMORY(msg);
 421         msg->dn = ldb_dn_new(msg, s->ldap.ldb, s->dest_dsa.computer_dn_str);
 422         NT_STATUS_HAVE_NO_MEMORY(msg->dn);
 423
 424         ret = ldb_msg_add_fmt(msg, "userAccountControl", "%u", user_account_control);
 425         if (ret != 0) {
 426                 talloc_free(msg);
 427                 return NT_STATUS_NO_MEMORY;
 428         }
 429
 430         /* mark all the message elements (should be just one)
 431            as LDB_FLAG_MOD_REPLACE */
 432         for (i=0;i<msg->num_elements;i++) {
 433                 msg->elements[i].flags = LDB_FLAG_MOD_REPLACE;
 434         }
 435
 436         ret = ldb_modify(s->ldap.ldb, msg);
 437         talloc_free(msg);
 438         if (ret != LDB_SUCCESS) {
 439                 return NT_STATUS_LDAP(ret);
 440         }
 441
 442         s->dest_dsa.user_account_control = user_account_control;
 443
 444         return NT_STATUS_OK;
 445 }
 446
 447 static NTSTATUS unbecomeDC_ldap_move_computer(struct libnet_UnbecomeDC_state *s)
 448 {
 449         int ret;
 450         struct ldb_result *r;
 451         struct ldb_dn *basedn;
 452         struct ldb_dn *old_dn;
 453         struct ldb_dn *new_dn;
 454         const char *_1_1_attrs[] = {
 455                 "1.1",
 456                 NULL
 457         };
 458
 459         basedn = ldb_dn_new_fmt(s, s->ldap.ldb, "<WKGUID=aa312825768811d1aded00c04fd8d5cd,%s>",
 460                                 s->domain.dn_str);
 461         NT_STATUS_HAVE_NO_MEMORY(basedn);
 462
 463         ret = ldb_search(s->ldap.ldb, basedn, LDB_SCOPE_BASE,
 464                          "(objectClass=*)", _1_1_attrs, &r);
 465         talloc_free(basedn);
 466         if (ret != LDB_SUCCESS) {
 467                 return NT_STATUS_LDAP(ret);
 468         } else if (r->count != 1) {
 469                 talloc_free(r);
 470                 return NT_STATUS_INVALID_NETWORK_RESPONSE;
 471         }
 472
 473         old_dn = ldb_dn_new(r, s->ldap.ldb, s->dest_dsa.computer_dn_str);
 474         NT_STATUS_HAVE_NO_MEMORY(old_dn);
 475
 476         new_dn = r->msgs[0]->dn;
 477
 478         if (!ldb_dn_add_child_fmt(new_dn, "CN=%s", s->dest_dsa.netbios_name)) {
 479                 talloc_free(r);
 480                 return NT_STATUS_NO_MEMORY;
 481         }
 482
 483         if (ldb_dn_compare(old_dn, new_dn) == 0) {
 484                 /* we don't need to rename if the old and new dn match */
 485                 talloc_free(r);
 486                 return NT_STATUS_OK;
 487         }
 488
 489         ret = ldb_rename(s->ldap.ldb, old_dn, new_dn);
 490         if (ret != LDB_SUCCESS) {
 491                 talloc_free(r);
 492                 return NT_STATUS_LDAP(ret);
 493         }
 494
 495         s->dest_dsa.computer_dn_str = ldb_dn_alloc_linearized(s, new_dn);
 496         NT_STATUS_HAVE_NO_MEMORY(s->dest_dsa.computer_dn_str);
 497
 498         talloc_free(r);
 499
 500         return NT_STATUS_OK;
 501 }
 502
 503 static void unbecomeDC_drsuapi_connect_send(struct libnet_UnbecomeDC_state *s);
 504
 505 static void unbecomeDC_connect_ldap(struct libnet_UnbecomeDC_state *s)
 506 {
 507         struct composite_context *c = s->creq;
 508
 509         c->status = unbecomeDC_ldap_connect(s);
 510         if (!composite_is_ok(c)) return;
 511
 512         c->status = unbecomeDC_ldap_rootdse(s);
 513         if (!composite_is_ok(c)) return;
 514
 515         c->status = unbecomeDC_ldap_computer_object(s);
 516         if (!composite_is_ok(c)) return;
 517
 518         c->status = unbecomeDC_ldap_modify_computer(s);
 519         if (!composite_is_ok(c)) return;
 520
 521         c->status = unbecomeDC_ldap_move_computer(s);
 522         if (!composite_is_ok(c)) return;
 523
 524         unbecomeDC_drsuapi_connect_send(s);
 525 }
 526
 527 static void unbecomeDC_drsuapi_connect_recv(struct composite_context *creq);
 528
 529 static void unbecomeDC_drsuapi_connect_send(struct libnet_UnbecomeDC_state *s)
 530 {
 531         struct composite_context *c = s->creq;
 532         struct composite_context *creq;
 533         char *binding_str;
 534
 535         binding_str = talloc_asprintf(s, "ncacn_ip_tcp:%s[seal]", s->source_dsa.dns_name);
 536         if (composite_nomem(binding_str, c)) return;
 537
 538         c->status = dcerpc_parse_binding(s, binding_str, &s->drsuapi.binding);
 539         talloc_free(binding_str);
 540         if (!composite_is_ok(c)) return;
 541
 542         creq = dcerpc_pipe_connect_b_send(s, s->drsuapi.binding, &ndr_table_drsuapi,
 543                                           s->libnet->cred, s->libnet->event_ctx,
 544                                           s->libnet->lp_ctx);
 545         composite_continue(c, creq, unbecomeDC_drsuapi_connect_recv, s);
 546 }
 547
 548 static void unbecomeDC_drsuapi_bind_send(struct libnet_UnbecomeDC_state *s);
 549
 550 static void unbecomeDC_drsuapi_connect_recv(struct composite_context *req)
 551 {
 552         struct libnet_UnbecomeDC_state *s = talloc_get_type(req->async.private_data,
 553                                             struct libnet_UnbecomeDC_state);
 554         struct composite_context *c = s->creq;
 555
 556         c->status = dcerpc_pipe_connect_b_recv(req, s, &s->drsuapi.pipe);
 557         if (!composite_is_ok(c)) return;
 558
 559         unbecomeDC_drsuapi_bind_send(s);
 560 }
 561
 562 static void unbecomeDC_drsuapi_bind_recv(struct rpc_request *req);
 563
 564 static void unbecomeDC_drsuapi_bind_send(struct libnet_UnbecomeDC_state *s)
 565 {
 566         struct composite_context *c = s->creq;
 567         struct rpc_request *req;
 568         struct drsuapi_DsBindInfo28 *bind_info28;
 569
 570         GUID_from_string(DRSUAPI_DS_BIND_GUID, &s->drsuapi.bind_guid);
 571
 572         bind_info28                             = &s->drsuapi.local_info28;
 573         bind_info28->supported_extensions       = 0;
 574         bind_info28->site_guid                  = GUID_zero();
 575         bind_info28->u1                         = 508;
 576         bind_info28->repl_epoch                 = 0;
 577
 578         s->drsuapi.bind_info_ctr.length         = 28;
 579         s->drsuapi.bind_info_ctr.info.info28    = *bind_info28;
 580
 581         s->drsuapi.bind_r.in.bind_guid = &s->drsuapi.bind_guid;
 582         s->drsuapi.bind_r.in.bind_info = &s->drsuapi.bind_info_ctr;
 583         s->drsuapi.bind_r.out.bind_handle = &s->drsuapi.bind_handle;
 584
 585         req = dcerpc_drsuapi_DsBind_send(s->drsuapi.pipe, s, &s->drsuapi.bind_r);
 586         composite_continue_rpc(c, req, unbecomeDC_drsuapi_bind_recv, s);
 587 }
 588
 589 static void unbecomeDC_drsuapi_remove_ds_server_send(struct libnet_UnbecomeDC_state *s);
 590
 591 static void unbecomeDC_drsuapi_bind_recv(struct rpc_request *req)
 592 {
 593         struct libnet_UnbecomeDC_state *s = talloc_get_type(req->async.private_data,
 594                                             struct libnet_UnbecomeDC_state);
 595         struct composite_context *c = s->creq;
 596
 597         c->status = dcerpc_ndr_request_recv(req);
 598         if (!composite_is_ok(c)) return;
 599
 600         if (!W_ERROR_IS_OK(s->drsuapi.bind_r.out.result)) {
 601                 composite_error(c, werror_to_ntstatus(s->drsuapi.bind_r.out.result));
 602                 return;
 603         }
 604
 605         ZERO_STRUCT(s->drsuapi.remote_info28);
 606         if (s->drsuapi.bind_r.out.bind_info) {
 607                 switch (s->drsuapi.bind_r.out.bind_info->length) {
 608                 case 24: {
 609                         struct drsuapi_DsBindInfo24 *info24;
 610                         info24 = &s->drsuapi.bind_r.out.bind_info->info.info24;
 611                         s->drsuapi.remote_info28.supported_extensions   = info24->supported_extensions;
 612                         s->drsuapi.remote_info28.site_guid              = info24->site_guid;
 613                         s->drsuapi.remote_info28.u1                     = info24->u1;
 614                         s->drsuapi.remote_info28.repl_epoch             = 0;
 615                         break;
 616                 }
 617                 case 28:
 618                         s->drsuapi.remote_info28 = s->drsuapi.bind_r.out.bind_info->info.info28;
 619                         break;
 620                 }
 621         }
 622
 623         unbecomeDC_drsuapi_remove_ds_server_send(s);
 624 }
 625
 626 static void unbecomeDC_drsuapi_remove_ds_server_recv(struct rpc_request *req);
 627
 628 static void unbecomeDC_drsuapi_remove_ds_server_send(struct libnet_UnbecomeDC_state *s)
 629 {
 630         struct composite_context *c = s->creq;
 631         struct rpc_request *req;
 632         struct drsuapi_DsRemoveDSServer *r = &s->drsuapi.rm_ds_srv_r;
 633
 634         r->in.bind_handle       = &s->drsuapi.bind_handle;
 635         r->in.level             = 1;
 636         r->in.req.req1.server_dn= s->dest_dsa.server_dn_str;
 637         r->in.req.req1.domain_dn= s->domain.dn_str;
 638         r->in.req.req1.unknown  = 0x00000001;
 639
 640         req = dcerpc_drsuapi_DsRemoveDSServer_send(s->drsuapi.pipe, s, r);
 641         composite_continue_rpc(c, req, unbecomeDC_drsuapi_remove_ds_server_recv, s);
 642 }
 643
 644 static void unbecomeDC_drsuapi_remove_ds_server_recv(struct rpc_request *req)
 645 {
 646         struct libnet_UnbecomeDC_state *s = talloc_get_type(req->async.private_data,
 647                                             struct libnet_UnbecomeDC_state);
 648         struct composite_context *c = s->creq;
 649         struct drsuapi_DsRemoveDSServer *r = &s->drsuapi.rm_ds_srv_r;
 650
 651         c->status = dcerpc_ndr_request_recv(req);
 652         if (!composite_is_ok(c)) return;
 653
 654         if (!W_ERROR_IS_OK(r->out.result)) {
 655                 composite_error(c, werror_to_ntstatus(r->out.result));
 656                 return;
 657         }
 658
 659         if (r->out.level != 1) {
 660                 composite_error(c, NT_STATUS_INVALID_NETWORK_RESPONSE);
 661                 return;
 662         }
 663
 664         if (!W_ERROR_IS_OK(r->out.res.res1.status)) {
 665                 composite_error(c, werror_to_ntstatus(r->out.res.res1.status));
 666                 return;
 667         }
 668
 669         composite_done(c);
 670 }
 671
 672 struct composite_context *libnet_UnbecomeDC_send(struct libnet_context *ctx, TALLOC_CTX *mem_ctx, struct libnet_UnbecomeDC *r)
 673 {
 674         struct composite_context *c;
 675         struct libnet_UnbecomeDC_state *s;
 676         char *tmp_name;
 677
 678         c = composite_create(mem_ctx, ctx->event_ctx);
 679         if (c == NULL) return NULL;
 680
 681         s = talloc_zero(c, struct libnet_UnbecomeDC_state);
 682         if (composite_nomem(s, c)) return c;
 683         c->private_data = s;
 684         s->creq         = c;
 685         s->libnet       = ctx;
 686
 687         /* Domain input */
 688         s->domain.dns_name      = talloc_strdup(s, r->in.domain_dns_name);
 689         if (composite_nomem(s->domain.dns_name, c)) return c;
 690         s->domain.netbios_name  = talloc_strdup(s, r->in.domain_netbios_name);
 691         if (composite_nomem(s->domain.netbios_name, c)) return c;
 692
 693         /* Source DSA input */
 694         s->source_dsa.address   = talloc_strdup(s, r->in.source_dsa_address);
 695         if (composite_nomem(s->source_dsa.address, c)) return c;
 696
 697         /* Destination DSA input */
 698         s->dest_dsa.netbios_name= talloc_strdup(s, r->in.dest_dsa_netbios_name);
 699         if (composite_nomem(s->dest_dsa.netbios_name, c)) return c;
 700
 701         /* Destination DSA dns_name construction */
 702         tmp_name                = strlower_talloc(s, s->dest_dsa.netbios_name);
 703         if (composite_nomem(tmp_name, c)) return c;
 704         s->dest_dsa.dns_name    = talloc_asprintf_append_buffer(tmp_name, ".%s",
 705                                                          s->domain.dns_name);
 706         if (composite_nomem(s->dest_dsa.dns_name, c)) return c;
 707
 708         unbecomeDC_send_cldap(s);
 709         return c;
 710 }
 711
 712 NTSTATUS libnet_UnbecomeDC_recv(struct composite_context *c, TALLOC_CTX *mem_ctx, struct libnet_UnbecomeDC *r)
 713 {
 714         NTSTATUS status;
 715
 716         status = composite_wait(c);
 717
 718         ZERO_STRUCT(r->out);
 719
 720         talloc_free(c);
 721         return status;
 722 }
 723
 724 NTSTATUS libnet_UnbecomeDC(struct libnet_context *ctx, TALLOC_CTX *mem_ctx, struct libnet_UnbecomeDC *r)
 725 {
 726         NTSTATUS status;
 727         struct composite_context *c;
 728         c = libnet_UnbecomeDC_send(ctx, mem_ctx, r);
 729         status = libnet_UnbecomeDC_recv(c, mem_ctx, r);
 730         return status;
 731 }