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 "../libds/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 NETLOGON_SAM_LOGON_RESPONSE_EX netlogon;
 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 tevent_req *req);
 254
 255 static void unbecomeDC_send_cldap(struct libnet_UnbecomeDC_state *s)
 256 {
 257         struct composite_context *c = s->creq;
 258         struct tevent_req *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          = NETLOGON_NT_VERSION_5 | NETLOGON_NT_VERSION_5EX;
 269         s->cldap.io.in.map_response     = true;
 270
 271         c->status = cldap_socket_init(s, s->libnet->event_ctx,
 272                                       NULL, NULL, &s->cldap.sock);//TODO
 273         if (!composite_is_ok(c)) return;
 274
 275         req = cldap_netlogon_send(s, s->cldap.sock, &s->cldap.io);
 276         if (composite_nomem(req, c)) return;
 277         tevent_req_set_callback(req, unbecomeDC_recv_cldap, s);
 278 }
 279
 280 static void unbecomeDC_connect_ldap(struct libnet_UnbecomeDC_state *s);
 281
 282 static void unbecomeDC_recv_cldap(struct tevent_req *req)
 283 {
 284         struct libnet_UnbecomeDC_state *s = tevent_req_callback_data(req,
 285                                             struct libnet_UnbecomeDC_state);
 286         struct composite_context *c = s->creq;
 287
 288         c->status = cldap_netlogon_recv(req,
 289                                         lp_iconv_convenience(s->libnet->lp_ctx),
 290                                         s, &s->cldap.io);
 291         talloc_free(req);
 292         if (!composite_is_ok(c)) return;
 293
 294         s->cldap.netlogon = s->cldap.io.out.netlogon.data.nt5_ex;
 295
 296         s->domain.dns_name              = s->cldap.netlogon.dns_domain;
 297         s->domain.netbios_name          = s->cldap.netlogon.domain;
 298         s->domain.guid                  = s->cldap.netlogon.domain_uuid;
 299
 300         s->source_dsa.dns_name          = s->cldap.netlogon.pdc_dns_name;
 301         s->source_dsa.netbios_name      = s->cldap.netlogon.pdc_name;
 302         s->source_dsa.site_name         = s->cldap.netlogon.server_site;
 303
 304         s->dest_dsa.site_name           = s->cldap.netlogon.client_site;
 305
 306         unbecomeDC_connect_ldap(s);
 307 }
 308
 309 static NTSTATUS unbecomeDC_ldap_connect(struct libnet_UnbecomeDC_state *s)
 310 {
 311         char *url;
 312
 313         url = talloc_asprintf(s, "ldap://%s/", s->source_dsa.dns_name);
 314         NT_STATUS_HAVE_NO_MEMORY(url);
 315
 316         s->ldap.ldb = ldb_wrap_connect(s, s->libnet->event_ctx, s->libnet->lp_ctx, url,
 317                                        NULL,
 318                                        s->libnet->cred,
 319                                        0);
 320         talloc_free(url);
 321         if (s->ldap.ldb == NULL) {
 322                 return NT_STATUS_UNEXPECTED_NETWORK_ERROR;
 323         }
 324
 325         return NT_STATUS_OK;
 326 }
 327
 328 static NTSTATUS unbecomeDC_ldap_rootdse(struct libnet_UnbecomeDC_state *s)
 329 {
 330         int ret;
 331         struct ldb_result *r;
 332         struct ldb_dn *basedn;
 333         static const char *attrs[] = {
 334                 "defaultNamingContext",
 335                 "configurationNamingContext",
 336                 NULL
 337         };
 338
 339         basedn = ldb_dn_new(s, s->ldap.ldb, NULL);
 340         NT_STATUS_HAVE_NO_MEMORY(basedn);
 341
 342         ret = ldb_search(s->ldap.ldb, s, &r, basedn, LDB_SCOPE_BASE, attrs,
 343                          "(objectClass=*)");
 344         talloc_free(basedn);
 345         if (ret != LDB_SUCCESS) {
 346                 return NT_STATUS_LDAP(ret);
 347         } else if (r->count != 1) {
 348                 talloc_free(r);
 349                 return NT_STATUS_INVALID_NETWORK_RESPONSE;
 350         }
 351
 352         s->domain.dn_str        = ldb_msg_find_attr_as_string(r->msgs[0], "defaultNamingContext", NULL);
 353         if (!s->domain.dn_str) return NT_STATUS_INVALID_NETWORK_RESPONSE;
 354         talloc_steal(s, s->domain.dn_str);
 355
 356         s->forest.config_dn_str = ldb_msg_find_attr_as_string(r->msgs[0], "configurationNamingContext", NULL);
 357         if (!s->forest.config_dn_str) return NT_STATUS_INVALID_NETWORK_RESPONSE;
 358         talloc_steal(s, s->forest.config_dn_str);
 359
 360         s->dest_dsa.server_dn_str = talloc_asprintf(s, "CN=%s,CN=Servers,CN=%s,CN=Sites,%s",
 361                                                     s->dest_dsa.netbios_name,
 362                                                     s->dest_dsa.site_name,
 363                                                     s->forest.config_dn_str);
 364         NT_STATUS_HAVE_NO_MEMORY(s->dest_dsa.server_dn_str);
 365
 366         talloc_free(r);
 367         return NT_STATUS_OK;
 368 }
 369
 370 static NTSTATUS unbecomeDC_ldap_computer_object(struct libnet_UnbecomeDC_state *s)
 371 {
 372         int ret;
 373         struct ldb_result *r;
 374         struct ldb_dn *basedn;
 375         static const char *attrs[] = {
 376                 "distinguishedName",
 377                 "userAccountControl",
 378                 NULL
 379         };
 380
 381         basedn = ldb_dn_new(s, s->ldap.ldb, s->domain.dn_str);
 382         NT_STATUS_HAVE_NO_MEMORY(basedn);
 383
 384         ret = ldb_search(s->ldap.ldb, s, &r, basedn, LDB_SCOPE_SUBTREE, attrs,
 385                          "(&(|(objectClass=user)(objectClass=computer))(sAMAccountName=%s$))",
 386                          s->dest_dsa.netbios_name);
 387         talloc_free(basedn);
 388         if (ret != LDB_SUCCESS) {
 389                 return NT_STATUS_LDAP(ret);
 390         } else if (r->count != 1) {
 391                 talloc_free(r);
 392                 return NT_STATUS_INVALID_NETWORK_RESPONSE;
 393         }
 394
 395         s->dest_dsa.computer_dn_str     = samdb_result_string(r->msgs[0], "distinguishedName", NULL);
 396         if (!s->dest_dsa.computer_dn_str) return NT_STATUS_INVALID_NETWORK_RESPONSE;
 397         talloc_steal(s, s->dest_dsa.computer_dn_str);
 398
 399         s->dest_dsa.user_account_control = samdb_result_uint(r->msgs[0], "userAccountControl", 0);
 400
 401         talloc_free(r);
 402         return NT_STATUS_OK;
 403 }
 404
 405 static NTSTATUS unbecomeDC_ldap_modify_computer(struct libnet_UnbecomeDC_state *s)
 406 {
 407         int ret;
 408         struct ldb_message *msg;
 409         uint32_t user_account_control = UF_WORKSTATION_TRUST_ACCOUNT;
 410         uint32_t i;
 411
 412         /* as the value is already as we want it to be, we're done */
 413         if (s->dest_dsa.user_account_control == user_account_control) {
 414                 return NT_STATUS_OK;
 415         }
 416
 417         /* make a 'modify' msg, and only for serverReference */
 418         msg = ldb_msg_new(s);
 419         NT_STATUS_HAVE_NO_MEMORY(msg);
 420         msg->dn = ldb_dn_new(msg, s->ldap.ldb, s->dest_dsa.computer_dn_str);
 421         NT_STATUS_HAVE_NO_MEMORY(msg->dn);
 422
 423         ret = ldb_msg_add_fmt(msg, "userAccountControl", "%u", user_account_control);
 424         if (ret != 0) {
 425                 talloc_free(msg);
 426                 return NT_STATUS_NO_MEMORY;
 427         }
 428
 429         /* mark all the message elements (should be just one)
 430            as LDB_FLAG_MOD_REPLACE */
 431         for (i=0;i<msg->num_elements;i++) {
 432                 msg->elements[i].flags = LDB_FLAG_MOD_REPLACE;
 433         }
 434
 435         ret = ldb_modify(s->ldap.ldb, msg);
 436         talloc_free(msg);
 437         if (ret != LDB_SUCCESS) {
 438                 return NT_STATUS_LDAP(ret);
 439         }
 440
 441         s->dest_dsa.user_account_control = user_account_control;
 442
 443         return NT_STATUS_OK;
 444 }
 445
 446 static NTSTATUS unbecomeDC_ldap_move_computer(struct libnet_UnbecomeDC_state *s)
 447 {
 448         int ret;
 449         struct ldb_result *r;
 450         struct ldb_dn *basedn;
 451         struct ldb_dn *old_dn;
 452         struct ldb_dn *new_dn;
 453         static const char *_1_1_attrs[] = {
 454                 "1.1",
 455                 NULL
 456         };
 457
 458         basedn = ldb_dn_new_fmt(s, s->ldap.ldb, "<WKGUID=aa312825768811d1aded00c04fd8d5cd,%s>",
 459                                 s->domain.dn_str);
 460         NT_STATUS_HAVE_NO_MEMORY(basedn);
 461
 462         ret = ldb_search(s->ldap.ldb, s, &r, basedn, LDB_SCOPE_BASE,
 463                          _1_1_attrs, "(objectClass=*)");
 464         talloc_free(basedn);
 465         if (ret != LDB_SUCCESS) {
 466                 return NT_STATUS_LDAP(ret);
 467         } else if (r->count != 1) {
 468                 talloc_free(r);
 469                 return NT_STATUS_INVALID_NETWORK_RESPONSE;
 470         }
 471
 472         old_dn = ldb_dn_new(r, s->ldap.ldb, s->dest_dsa.computer_dn_str);
 473         NT_STATUS_HAVE_NO_MEMORY(old_dn);
 474
 475         new_dn = r->msgs[0]->dn;
 476
 477         if (!ldb_dn_add_child_fmt(new_dn, "CN=%s", s->dest_dsa.netbios_name)) {
 478                 talloc_free(r);
 479                 return NT_STATUS_NO_MEMORY;
 480         }
 481
 482         if (ldb_dn_compare(old_dn, new_dn) == 0) {
 483                 /* we don't need to rename if the old and new dn match */
 484                 talloc_free(r);
 485                 return NT_STATUS_OK;
 486         }
 487
 488         ret = ldb_rename(s->ldap.ldb, old_dn, new_dn);
 489         if (ret != LDB_SUCCESS) {
 490                 talloc_free(r);
 491                 return NT_STATUS_LDAP(ret);
 492         }
 493
 494         s->dest_dsa.computer_dn_str = ldb_dn_alloc_linearized(s, new_dn);
 495         NT_STATUS_HAVE_NO_MEMORY(s->dest_dsa.computer_dn_str);
 496
 497         talloc_free(r);
 498
 499         return NT_STATUS_OK;
 500 }
 501
 502 static void unbecomeDC_drsuapi_connect_send(struct libnet_UnbecomeDC_state *s);
 503
 504 static void unbecomeDC_connect_ldap(struct libnet_UnbecomeDC_state *s)
 505 {
 506         struct composite_context *c = s->creq;
 507
 508         c->status = unbecomeDC_ldap_connect(s);
 509         if (!composite_is_ok(c)) return;
 510
 511         c->status = unbecomeDC_ldap_rootdse(s);
 512         if (!composite_is_ok(c)) return;
 513
 514         c->status = unbecomeDC_ldap_computer_object(s);
 515         if (!composite_is_ok(c)) return;
 516
 517         c->status = unbecomeDC_ldap_modify_computer(s);
 518         if (!composite_is_ok(c)) return;
 519
 520         c->status = unbecomeDC_ldap_move_computer(s);
 521         if (!composite_is_ok(c)) return;
 522
 523         unbecomeDC_drsuapi_connect_send(s);
 524 }
 525
 526 static void unbecomeDC_drsuapi_connect_recv(struct composite_context *creq);
 527
 528 static void unbecomeDC_drsuapi_connect_send(struct libnet_UnbecomeDC_state *s)
 529 {
 530         struct composite_context *c = s->creq;
 531         struct composite_context *creq;
 532         char *binding_str;
 533
 534         binding_str = talloc_asprintf(s, "ncacn_ip_tcp:%s[seal]", s->source_dsa.dns_name);
 535         if (composite_nomem(binding_str, c)) return;
 536
 537         c->status = dcerpc_parse_binding(s, binding_str, &s->drsuapi.binding);
 538         talloc_free(binding_str);
 539         if (!composite_is_ok(c)) return;
 540
 541         creq = dcerpc_pipe_connect_b_send(s, s->drsuapi.binding, &ndr_table_drsuapi,
 542                                           s->libnet->cred, s->libnet->event_ctx,
 543                                           s->libnet->lp_ctx);
 544         composite_continue(c, creq, unbecomeDC_drsuapi_connect_recv, s);
 545 }
 546
 547 static void unbecomeDC_drsuapi_bind_send(struct libnet_UnbecomeDC_state *s);
 548
 549 static void unbecomeDC_drsuapi_connect_recv(struct composite_context *req)
 550 {
 551         struct libnet_UnbecomeDC_state *s = talloc_get_type(req->async.private_data,
 552                                             struct libnet_UnbecomeDC_state);
 553         struct composite_context *c = s->creq;
 554
 555         c->status = dcerpc_pipe_connect_b_recv(req, s, &s->drsuapi.pipe);
 556         if (!composite_is_ok(c)) return;
 557
 558         unbecomeDC_drsuapi_bind_send(s);
 559 }
 560
 561 static void unbecomeDC_drsuapi_bind_recv(struct rpc_request *req);
 562
 563 static void unbecomeDC_drsuapi_bind_send(struct libnet_UnbecomeDC_state *s)
 564 {
 565         struct composite_context *c = s->creq;
 566         struct rpc_request *req;
 567         struct drsuapi_DsBindInfo28 *bind_info28;
 568
 569         GUID_from_string(DRSUAPI_DS_BIND_GUID, &s->drsuapi.bind_guid);
 570
 571         bind_info28                             = &s->drsuapi.local_info28;
 572         bind_info28->supported_extensions       = 0;
 573         bind_info28->site_guid                  = GUID_zero();
 574         bind_info28->pid                        = 0;
 575         bind_info28->repl_epoch                 = 0;
 576
 577         s->drsuapi.bind_info_ctr.length         = 28;
 578         s->drsuapi.bind_info_ctr.info.info28    = *bind_info28;
 579
 580         s->drsuapi.bind_r.in.bind_guid = &s->drsuapi.bind_guid;
 581         s->drsuapi.bind_r.in.bind_info = &s->drsuapi.bind_info_ctr;
 582         s->drsuapi.bind_r.out.bind_handle = &s->drsuapi.bind_handle;
 583
 584         req = dcerpc_drsuapi_DsBind_send(s->drsuapi.pipe, s, &s->drsuapi.bind_r);
 585         composite_continue_rpc(c, req, unbecomeDC_drsuapi_bind_recv, s);
 586 }
 587
 588 static void unbecomeDC_drsuapi_remove_ds_server_send(struct libnet_UnbecomeDC_state *s);
 589
 590 static void unbecomeDC_drsuapi_bind_recv(struct rpc_request *req)
 591 {
 592         struct libnet_UnbecomeDC_state *s = talloc_get_type(req->async.private_data,
 593                                             struct libnet_UnbecomeDC_state);
 594         struct composite_context *c = s->creq;
 595
 596         c->status = dcerpc_ndr_request_recv(req);
 597         if (!composite_is_ok(c)) return;
 598
 599         if (!W_ERROR_IS_OK(s->drsuapi.bind_r.out.result)) {
 600                 composite_error(c, werror_to_ntstatus(s->drsuapi.bind_r.out.result));
 601                 return;
 602         }
 603
 604         ZERO_STRUCT(s->drsuapi.remote_info28);
 605         if (s->drsuapi.bind_r.out.bind_info) {
 606                 switch (s->drsuapi.bind_r.out.bind_info->length) {
 607                 case 24: {
 608                         struct drsuapi_DsBindInfo24 *info24;
 609                         info24 = &s->drsuapi.bind_r.out.bind_info->info.info24;
 610                         s->drsuapi.remote_info28.supported_extensions   = info24->supported_extensions;
 611                         s->drsuapi.remote_info28.site_guid              = info24->site_guid;
 612                         s->drsuapi.remote_info28.pid                    = info24->pid;
 613                         s->drsuapi.remote_info28.repl_epoch             = 0;
 614                         break;
 615                 }
 616                 case 48: {
 617                         struct drsuapi_DsBindInfo48 *info48;
 618                         info48 = &s->drsuapi.bind_r.out.bind_info->info.info48;
 619                         s->drsuapi.remote_info28.supported_extensions   = info48->supported_extensions;
 620                         s->drsuapi.remote_info28.site_guid              = info48->site_guid;
 621                         s->drsuapi.remote_info28.pid                    = info48->pid;
 622                         s->drsuapi.remote_info28.repl_epoch             = info48->repl_epoch;
 623                         break;
 624                 }
 625                 case 28:
 626                         s->drsuapi.remote_info28 = s->drsuapi.bind_r.out.bind_info->info.info28;
 627                         break;
 628                 }
 629         }
 630
 631         unbecomeDC_drsuapi_remove_ds_server_send(s);
 632 }
 633
 634 static void unbecomeDC_drsuapi_remove_ds_server_recv(struct rpc_request *req);
 635
 636 static void unbecomeDC_drsuapi_remove_ds_server_send(struct libnet_UnbecomeDC_state *s)
 637 {
 638         struct composite_context *c = s->creq;
 639         struct rpc_request *req;
 640         struct drsuapi_DsRemoveDSServer *r = &s->drsuapi.rm_ds_srv_r;
 641
 642         r->in.bind_handle       = &s->drsuapi.bind_handle;
 643         r->in.level             = 1;
 644         r->in.req               = talloc(s, union drsuapi_DsRemoveDSServerRequest);
 645         r->in.req->req1.server_dn = s->dest_dsa.server_dn_str;
 646         r->in.req->req1.domain_dn = s->domain.dn_str;
 647         r->in.req->req1.commit  = true;
 648
 649         r->out.level_out        = talloc(s, int32_t);
 650         r->out.res              = talloc(s, union drsuapi_DsRemoveDSServerResult);
 651
 652         req = dcerpc_drsuapi_DsRemoveDSServer_send(s->drsuapi.pipe, s, r);
 653         composite_continue_rpc(c, req, unbecomeDC_drsuapi_remove_ds_server_recv, s);
 654 }
 655
 656 static void unbecomeDC_drsuapi_remove_ds_server_recv(struct rpc_request *req)
 657 {
 658         struct libnet_UnbecomeDC_state *s = talloc_get_type(req->async.private_data,
 659                                             struct libnet_UnbecomeDC_state);
 660         struct composite_context *c = s->creq;
 661         struct drsuapi_DsRemoveDSServer *r = &s->drsuapi.rm_ds_srv_r;
 662
 663         c->status = dcerpc_ndr_request_recv(req);
 664         if (!composite_is_ok(c)) return;
 665
 666         if (!W_ERROR_IS_OK(r->out.result)) {
 667                 composite_error(c, werror_to_ntstatus(r->out.result));
 668                 return;
 669         }
 670
 671         if (*r->out.level_out != 1) {
 672                 composite_error(c, NT_STATUS_INVALID_NETWORK_RESPONSE);
 673                 return;
 674         }
 675
 676         composite_done(c);
 677 }
 678
 679 struct composite_context *libnet_UnbecomeDC_send(struct libnet_context *ctx, TALLOC_CTX *mem_ctx, struct libnet_UnbecomeDC *r)
 680 {
 681         struct composite_context *c;
 682         struct libnet_UnbecomeDC_state *s;
 683         char *tmp_name;
 684
 685         c = composite_create(mem_ctx, ctx->event_ctx);
 686         if (c == NULL) return NULL;
 687
 688         s = talloc_zero(c, struct libnet_UnbecomeDC_state);
 689         if (composite_nomem(s, c)) return c;
 690         c->private_data = s;
 691         s->creq         = c;
 692         s->libnet       = ctx;
 693
 694         /* Domain input */
 695         s->domain.dns_name      = talloc_strdup(s, r->in.domain_dns_name);
 696         if (composite_nomem(s->domain.dns_name, c)) return c;
 697         s->domain.netbios_name  = talloc_strdup(s, r->in.domain_netbios_name);
 698         if (composite_nomem(s->domain.netbios_name, c)) return c;
 699
 700         /* Source DSA input */
 701         s->source_dsa.address   = talloc_strdup(s, r->in.source_dsa_address);
 702         if (composite_nomem(s->source_dsa.address, c)) return c;
 703
 704         /* Destination DSA input */
 705         s->dest_dsa.netbios_name= talloc_strdup(s, r->in.dest_dsa_netbios_name);
 706         if (composite_nomem(s->dest_dsa.netbios_name, c)) return c;
 707
 708         /* Destination DSA dns_name construction */
 709         tmp_name                = strlower_talloc(s, s->dest_dsa.netbios_name);
 710         if (composite_nomem(tmp_name, c)) return c;
 711         s->dest_dsa.dns_name    = talloc_asprintf_append_buffer(tmp_name, ".%s",
 712                                                          s->domain.dns_name);
 713         if (composite_nomem(s->dest_dsa.dns_name, c)) return c;
 714
 715         unbecomeDC_send_cldap(s);
 716         return c;
 717 }
 718
 719 NTSTATUS libnet_UnbecomeDC_recv(struct composite_context *c, TALLOC_CTX *mem_ctx, struct libnet_UnbecomeDC *r)
 720 {
 721         NTSTATUS status;
 722
 723         status = composite_wait(c);
 724
 725         ZERO_STRUCT(r->out);
 726
 727         talloc_free(c);
 728         return status;
 729 }
 730
 731 NTSTATUS libnet_UnbecomeDC(struct libnet_context *ctx, TALLOC_CTX *mem_ctx, struct libnet_UnbecomeDC *r)
 732 {
 733         NTSTATUS status;
 734         struct composite_context *c;
 735         c = libnet_UnbecomeDC_send(ctx, mem_ctx, r);
 736         status = libnet_UnbecomeDC_recv(c, mem_ctx, r);
 737         return status;
 738 }