source4/dsdb/dns/dns_update.c

   1 /*
   2    Unix SMB/CIFS mplementation.
   3
   4    DNS update service
   5
   6    Copyright (C) Andrew Tridgell 2009
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20
  21 */
  22
  23 /*
  24   this module auto-creates the named.conf.update file, which tells
  25   bind9 what KRB5 principals it should accept for updates to our zone
  26
  27   It also uses the samba_dnsupdate script to auto-create the right DNS
  28   names for ourselves as a DC in the domain, using TSIG-GSS
  29  */
  30
  31 #include "includes.h"
  32 #include "dsdb/samdb/samdb.h"
  33 #include "auth/auth.h"
  34 #include "smbd/service.h"
  35 #include "lib/messaging/irpc.h"
  36 #include "param/param.h"
  37 #include "system/filesys.h"
  38 #include "libcli/composite/composite.h"
  39 #include "libcli/security/dom_sid.h"
  40 #include "librpc/gen_ndr/ndr_irpc.h"
  41
  42 struct dnsupdate_service {
  43         struct task_server *task;
  44         struct auth_session_info *system_session_info;
  45         struct ldb_context *samdb;
  46
  47         /* status for periodic config file update */
  48         struct {
  49                 uint32_t interval;
  50                 struct tevent_timer *te;
  51                 struct tevent_req *subreq;
  52                 NTSTATUS status;
  53         } confupdate;
  54
  55         /* status for periodic DNS name check */
  56         struct {
  57                 uint32_t interval;
  58                 struct tevent_timer *te;
  59                 struct tevent_req *subreq;
  60                 struct tevent_req *spnreq;
  61                 NTSTATUS status;
  62         } nameupdate;
  63 };
  64
  65 /*
  66   called when rndc reload has finished
  67  */
  68 static void dnsupdate_rndc_done(struct tevent_req *subreq)
  69 {
  70         struct dnsupdate_service *service = tevent_req_callback_data(subreq,
  71                                             struct dnsupdate_service);
  72         int ret;
  73         int sys_errno;
  74
  75         service->confupdate.subreq = NULL;
  76
  77         ret = samba_runcmd_recv(subreq, &sys_errno);
  78         TALLOC_FREE(subreq);
  79         if (ret != 0) {
  80                 service->confupdate.status = map_nt_error_from_unix(sys_errno);
  81         } else {
  82                 service->confupdate.status = NT_STATUS_OK;
  83         }
  84
  85         if (!NT_STATUS_IS_OK(service->confupdate.status)) {
  86                 DEBUG(0,(__location__ ": Failed rndc update - %s\n",
  87                          nt_errstr(service->confupdate.status)));
  88         } else {
  89                 DEBUG(3,("Completed rndc reload OK\n"));
  90         }
  91 }
  92
  93 /*
  94   called every 'dnsupdate:conf interval' seconds
  95  */
  96 static void dnsupdate_rebuild(struct dnsupdate_service *service)
  97 {
  98         int ret;
  99         size_t size;
 100         struct ldb_result *res;
 101         const char *tmp_path, *path, *path_static;
 102         char *static_policies;
 103         int fd;
 104         unsigned int i;
 105         const char *attrs[] = { "sAMAccountName", NULL };
 106         const char *realm = lpcfg_realm(service->task->lp_ctx);
 107         TALLOC_CTX *tmp_ctx = talloc_new(service);
 108         const char * const *rndc_command = lpcfg_rndc_command(service->task->lp_ctx);
 109
 110         /* abort any pending script run */
 111         TALLOC_FREE(service->confupdate.subreq);
 112
 113         ret = ldb_search(service->samdb, tmp_ctx, &res, NULL, LDB_SCOPE_SUBTREE,
 114                          attrs, "(|(samaccountname=administrator)(&(primaryGroupID=%u)(objectClass=computer)))",
 115                          DOMAIN_RID_DCS);
 116         if (ret != LDB_SUCCESS) {
 117                 DEBUG(0,(__location__ ": Unable to find DCs list - %s", ldb_errstring(service->samdb)));
 118                 talloc_free(tmp_ctx);
 119                 return;
 120         }
 121
 122         path = lpcfg_parm_string(service->task->lp_ctx, NULL, "dnsupdate", "path");
 123         if (path == NULL) {
 124                 path = private_path(tmp_ctx, service->task->lp_ctx, "named.conf.update");
 125         }
 126
 127         path_static = lpcfg_parm_string(service->task->lp_ctx, NULL, "dnsupdate", "extra_static_grant_rules");
 128         if (path_static == NULL) {
 129                 path_static = private_path(tmp_ctx, service->task->lp_ctx, "named.conf.update.static");
 130         }
 131
 132         tmp_path = talloc_asprintf(tmp_ctx, "%s.tmp", path);
 133         if (path == NULL || tmp_path == NULL || path_static == NULL ) {
 134                 DEBUG(0,(__location__ ": Unable to get paths\n"));
 135                 talloc_free(tmp_ctx);
 136                 return;
 137         }
 138
 139         static_policies = file_load(path_static, &size, 0, tmp_ctx);
 140
 141         unlink(tmp_path);
 142         fd = open(tmp_path, O_CREAT|O_TRUNC|O_WRONLY, 0444);
 143         if (fd == -1) {
 144                 DEBUG(1,(__location__ ": Unable to open %s - %s\n", tmp_path, strerror(errno)));
 145                 talloc_free(tmp_ctx);
 146                 return;
 147         }
 148
 149         dprintf(fd, "/* this file is auto-generated - do not edit */\n");
 150         dprintf(fd, "update-policy {\n");
 151         if( static_policies != NULL ) {
 152                 dprintf(fd, "/* Start of static entries */\n");
 153                 dprintf(fd, "%s\n",static_policies);
 154                 dprintf(fd, "/* End of static entries */\n");
 155         }
 156         dprintf(fd, "\tgrant %s ms-self * A AAAA;\n", realm);
 157
 158         for (i=0; i<res->count; i++) {
 159                 const char *acctname;
 160                 acctname = ldb_msg_find_attr_as_string(res->msgs[i],
 161                                                        "sAMAccountName", NULL);
 162                 if (!acctname) continue;
 163                 dprintf(fd, "\tgrant %s@%s wildcard * A AAAA SRV CNAME;\n",
 164                         acctname, realm);
 165         }
 166         dprintf(fd, "};\n");
 167         close(fd);
 168
 169
 170         if (NT_STATUS_IS_OK(service->confupdate.status) &&
 171             file_compare(tmp_path, path) == true) {
 172                 unlink(tmp_path);
 173                 talloc_free(tmp_ctx);
 174                 return;
 175         }
 176
 177         if (rename(tmp_path, path) != 0) {
 178                 DEBUG(0,(__location__ ": Failed to rename %s to %s - %s\n",
 179                          tmp_path, path, strerror(errno)));
 180                 talloc_free(tmp_ctx);
 181                 return;
 182         }
 183
 184         DEBUG(2,("Loading new DNS update grant rules\n"));
 185         service->confupdate.subreq = samba_runcmd_send(service,
 186                                                        service->task->event_ctx,
 187                                                        timeval_current_ofs(10, 0),
 188                                                        2, 0,
 189                                                        rndc_command,
 190                                                        "reload", NULL);
 191         if (service->confupdate.subreq == NULL) {
 192                 DEBUG(0,(__location__ ": samba_runcmd_send() failed with no memory\n"));
 193                 talloc_free(tmp_ctx);
 194                 return;
 195         }
 196         tevent_req_set_callback(service->confupdate.subreq,
 197                                 dnsupdate_rndc_done,
 198                                 service);
 199
 200         talloc_free(tmp_ctx);
 201 }
 202
 203 static NTSTATUS dnsupdate_confupdate_schedule(struct dnsupdate_service *service);
 204
 205 /*
 206   called every 'dnsupdate:conf interval' seconds
 207  */
 208 static void dnsupdate_confupdate_handler_te(struct tevent_context *ev, struct tevent_timer *te,
 209                                           struct timeval t, void *ptr)
 210 {
 211         struct dnsupdate_service *service = talloc_get_type(ptr, struct dnsupdate_service);
 212
 213         dnsupdate_rebuild(service);
 214         dnsupdate_confupdate_schedule(service);
 215 }
 216
 217
 218 static NTSTATUS dnsupdate_confupdate_schedule(struct dnsupdate_service *service)
 219 {
 220         service->confupdate.te = tevent_add_timer(service->task->event_ctx, service,
 221                                                 timeval_current_ofs(service->confupdate.interval, 0),
 222                                                 dnsupdate_confupdate_handler_te, service);
 223         NT_STATUS_HAVE_NO_MEMORY(service->confupdate.te);
 224         return NT_STATUS_OK;
 225 }
 226
 227
 228 /*
 229   called when dns update script has finished
 230  */
 231 static void dnsupdate_nameupdate_done(struct tevent_req *subreq)
 232 {
 233         struct dnsupdate_service *service = tevent_req_callback_data(subreq,
 234                                             struct dnsupdate_service);
 235         int ret;
 236         int sys_errno;
 237
 238         service->nameupdate.subreq = NULL;
 239
 240         ret = samba_runcmd_recv(subreq, &sys_errno);
 241         TALLOC_FREE(subreq);
 242         if (ret != 0) {
 243                 service->nameupdate.status = map_nt_error_from_unix(sys_errno);
 244         } else {
 245                 service->nameupdate.status = NT_STATUS_OK;
 246         }
 247
 248         if (!NT_STATUS_IS_OK(service->nameupdate.status)) {
 249                 DEBUG(0,(__location__ ": Failed DNS update - %s\n",
 250                          nt_errstr(service->nameupdate.status)));
 251         } else {
 252                 DEBUG(3,("Completed DNS update check OK\n"));
 253         }
 254 }
 255
 256
 257 /*
 258   called when spn update script has finished
 259  */
 260 static void dnsupdate_spnupdate_done(struct tevent_req *subreq)
 261 {
 262         struct dnsupdate_service *service = tevent_req_callback_data(subreq,
 263                                             struct dnsupdate_service);
 264         int ret;
 265         int sys_errno;
 266
 267         service->nameupdate.spnreq = NULL;
 268
 269         ret = samba_runcmd_recv(subreq, &sys_errno);
 270         TALLOC_FREE(subreq);
 271         if (ret != 0) {
 272                 service->nameupdate.status = map_nt_error_from_unix(sys_errno);
 273         } else {
 274                 service->nameupdate.status = NT_STATUS_OK;
 275         }
 276
 277         if (!NT_STATUS_IS_OK(service->nameupdate.status)) {
 278                 DEBUG(0,(__location__ ": Failed SPN update - %s\n",
 279                          nt_errstr(service->nameupdate.status)));
 280         } else {
 281                 DEBUG(3,("Completed SPN update check OK\n"));
 282         }
 283 }
 284
 285 /*
 286   called every 'dnsupdate:name interval' seconds
 287  */
 288 static void dnsupdate_check_names(struct dnsupdate_service *service)
 289 {
 290         const char * const *dns_update_command = lpcfg_dns_update_command(service->task->lp_ctx);
 291         const char * const *spn_update_command = lpcfg_spn_update_command(service->task->lp_ctx);
 292
 293         /* kill any existing child */
 294         TALLOC_FREE(service->nameupdate.subreq);
 295
 296         DEBUG(3,("Calling DNS name update script\n"));
 297         service->nameupdate.subreq = samba_runcmd_send(service,
 298                                                        service->task->event_ctx,
 299                                                        timeval_current_ofs(20, 0),
 300                                                        2, 0,
 301                                                        dns_update_command,
 302                                                        NULL);
 303         if (service->nameupdate.subreq == NULL) {
 304                 DEBUG(0,(__location__ ": samba_runcmd_send() failed with no memory\n"));
 305                 return;
 306         }
 307         tevent_req_set_callback(service->nameupdate.subreq,
 308                                 dnsupdate_nameupdate_done,
 309                                 service);
 310
 311         DEBUG(3,("Calling SPN name update script\n"));
 312         service->nameupdate.spnreq = samba_runcmd_send(service,
 313                                                        service->task->event_ctx,
 314                                                        timeval_current_ofs(20, 0),
 315                                                        2, 0,
 316                                                        spn_update_command,
 317                                                        NULL);
 318         if (service->nameupdate.spnreq == NULL) {
 319                 DEBUG(0,(__location__ ": samba_runcmd_send() failed with no memory\n"));
 320                 return;
 321         }
 322         tevent_req_set_callback(service->nameupdate.spnreq,
 323                                 dnsupdate_spnupdate_done,
 324                                 service);
 325 }
 326
 327 static NTSTATUS dnsupdate_nameupdate_schedule(struct dnsupdate_service *service);
 328
 329 /*
 330   called every 'dnsupdate:name interval' seconds
 331  */
 332 static void dnsupdate_nameupdate_handler_te(struct tevent_context *ev, struct tevent_timer *te,
 333                                             struct timeval t, void *ptr)
 334 {
 335         struct dnsupdate_service *service = talloc_get_type(ptr, struct dnsupdate_service);
 336
 337         dnsupdate_check_names(service);
 338         dnsupdate_nameupdate_schedule(service);
 339 }
 340
 341
 342 static NTSTATUS dnsupdate_nameupdate_schedule(struct dnsupdate_service *service)
 343 {
 344         service->nameupdate.te = tevent_add_timer(service->task->event_ctx, service,
 345                                                   timeval_current_ofs(service->nameupdate.interval, 0),
 346                                                   dnsupdate_nameupdate_handler_te, service);
 347         NT_STATUS_HAVE_NO_MEMORY(service->nameupdate.te);
 348         return NT_STATUS_OK;
 349 }
 350
 351
 352 struct dnsupdate_RODC_state {
 353         struct irpc_message *msg;
 354         struct dnsupdate_RODC *r;
 355         char *tmp_path;
 356         int fd;
 357 };
 358
 359 static int dnsupdate_RODC_destructor(struct dnsupdate_RODC_state *st)
 360 {
 361         if (st->fd != -1) {
 362                 close(st->fd);
 363         }
 364         unlink(st->tmp_path);
 365         return 0;
 366 }
 367
 368 /*
 369   called when the DNS update has completed
 370  */
 371 static void dnsupdate_RODC_callback(struct tevent_req *req)
 372 {
 373         struct dnsupdate_RODC_state *st =
 374                 tevent_req_callback_data(req,
 375                                          struct dnsupdate_RODC_state);
 376         int sys_errno;
 377         int i, ret;
 378
 379         ret = samba_runcmd_recv(req, &sys_errno);
 380         talloc_free(req);
 381         if (ret != 0) {
 382                 st->r->out.result = map_nt_error_from_unix(sys_errno);
 383                 DEBUG(2,(__location__ ": RODC DNS Update failed: %s\n", nt_errstr(st->r->out.result)));
 384         } else {
 385                 st->r->out.result = NT_STATUS_OK;
 386                 DEBUG(3,(__location__ ": RODC DNS Update OK\n"));
 387         }
 388
 389         for (i=0; i<st->r->in.dns_names->count; i++) {
 390                 st->r->out.dns_names->names[i].status = NT_STATUS_V(st->r->out.result);
 391         }
 392
 393         irpc_send_reply(st->msg, NT_STATUS_OK);
 394 }
 395
 396
 397 /**
 398  * Called when we get a RODC DNS update request from the netlogon
 399  * rpc server
 400  */
 401 static NTSTATUS dnsupdate_dnsupdate_RODC(struct irpc_message *msg,
 402                                          struct dnsupdate_RODC *r)
 403 {
 404         struct dnsupdate_service *s = talloc_get_type(msg->private_data,
 405                                                       struct dnsupdate_service);
 406         const char * const *dns_update_command = lpcfg_dns_update_command(s->task->lp_ctx);
 407         struct dnsupdate_RODC_state *st;
 408         struct tevent_req *req;
 409         int i, ret;
 410         struct GUID ntds_guid;
 411         const char *site, *dnsdomain, *dnsforest, *ntdsguid, *hostname;
 412         struct ldb_dn *sid_dn;
 413         const char *attrs[] = { "dNSHostName", NULL };
 414         struct ldb_result *res;
 415
 416         st = talloc_zero(msg, struct dnsupdate_RODC_state);
 417         if (!st) {
 418                 r->out.result = NT_STATUS_NO_MEMORY;
 419                 return NT_STATUS_OK;
 420         }
 421
 422         st->r = r;
 423         st->msg = msg;
 424
 425         st->tmp_path = smbd_tmp_path(st, s->task->lp_ctx, "rodcdns.XXXXXX");
 426         if (!st->tmp_path) {
 427                 talloc_free(st);
 428                 r->out.result = NT_STATUS_NO_MEMORY;
 429                 return NT_STATUS_OK;
 430         }
 431
 432         st->fd = mkstemp(st->tmp_path);
 433         if (st->fd == -1) {
 434                 DEBUG(0,("Unable to create a temporary file for RODC dnsupdate\n"));
 435                 talloc_free(st);
 436                 r->out.result = NT_STATUS_INTERNAL_DB_CORRUPTION;
 437                 return NT_STATUS_OK;
 438         }
 439
 440         talloc_set_destructor(st, dnsupdate_RODC_destructor);
 441
 442         sid_dn = ldb_dn_new_fmt(st, s->samdb, "<SID=%s>", dom_sid_string(st, r->in.dom_sid));
 443         if (!sid_dn) {
 444                 talloc_free(st);
 445                 r->out.result = NT_STATUS_NO_MEMORY;
 446                 return NT_STATUS_OK;
 447         }
 448
 449         /* work out the site */
 450         ret = samdb_find_site_for_computer(s->samdb, st, sid_dn, &site);
 451         if (ret != LDB_SUCCESS) {
 452                 DEBUG(2, (__location__ ": Unable to find site for computer %s\n",
 453                           ldb_dn_get_linearized(sid_dn)));
 454                 talloc_free(st);
 455                 r->out.result = NT_STATUS_NO_SUCH_USER;
 456                 return NT_STATUS_OK;
 457         }
 458
 459         /* work out the ntdsguid */
 460         ret = samdb_find_ntdsguid_for_computer(s->samdb, sid_dn, &ntds_guid);
 461         ntdsguid = GUID_string(st, &ntds_guid);
 462         if (ret != LDB_SUCCESS || !ntdsguid) {
 463                 DEBUG(2, (__location__ ": Unable to find NTDS GUID for computer %s\n",
 464                           ldb_dn_get_linearized(sid_dn)));
 465                 talloc_free(st);
 466                 r->out.result = NT_STATUS_NO_SUCH_USER;
 467                 return NT_STATUS_OK;
 468         }
 469
 470
 471         /* find dnsdomain and dnsforest */
 472         dnsdomain = lpcfg_realm(s->task->lp_ctx);
 473         dnsforest = dnsdomain;
 474
 475         /* find the hostname */
 476         ret = dsdb_search_dn(s->samdb, st, &res, sid_dn, attrs, 0);
 477         if (ret == LDB_SUCCESS) {
 478                 hostname = ldb_msg_find_attr_as_string(res->msgs[0], "dNSHostName", NULL);
 479         }
 480         if (ret != LDB_SUCCESS || !hostname) {
 481                 DEBUG(2, (__location__ ": Unable to find NTDS GUID for computer %s\n",
 482                           ldb_dn_get_linearized(sid_dn)));
 483                 talloc_free(st);
 484                 r->out.result = NT_STATUS_NO_SUCH_USER;
 485                 return NT_STATUS_OK;
 486         }
 487
 488
 489         for (i=0; i<st->r->in.dns_names->count; i++) {
 490                 struct NL_DNS_NAME_INFO *n = &r->in.dns_names->names[i];
 491                 switch (n->type) {
 492                 case NlDnsLdapAtSite:
 493                         dprintf(st->fd, "SRV _ldap._tcp.%s._sites.%s. %s %u\n",
 494                                 site, dnsdomain, hostname, n->port);
 495                         break;
 496                 case NlDnsGcAtSite:
 497                         dprintf(st->fd, "SRV _ldap._tcp.%s._sites.gc._msdcs.%s. %s %u\n",
 498                                 site, dnsdomain, hostname, n->port);
 499                         break;
 500                 case NlDnsDsaCname:
 501                         dprintf(st->fd, "CNAME %s._msdcs.%s. %s\n",
 502                                 ntdsguid, dnsforest, hostname);
 503                         break;
 504                 case NlDnsKdcAtSite:
 505                         dprintf(st->fd, "SRV _kerberos._tcp.%s._sites.dc._msdcs.%s. %s %u\n",
 506                                 site, dnsdomain, hostname, n->port);
 507                         break;
 508                 case NlDnsDcAtSite:
 509                         dprintf(st->fd, "SRV _ldap._tcp.%s._sites.dc._msdcs.%s. %s %u\n",
 510                                 site, dnsdomain, hostname, n->port);
 511                         break;
 512                 case NlDnsRfc1510KdcAtSite:
 513                         dprintf(st->fd, "SRV _kerberos._tcp.%s._sites.%s. %s %u\n",
 514                                 site, dnsdomain, hostname, n->port);
 515                         break;
 516                 case NlDnsGenericGcAtSite:
 517                         dprintf(st->fd, "SRV _gc._tcp.%s._sites.%s. %s %u\n",
 518                                 site, dnsforest, hostname, n->port);
 519                         break;
 520                 }
 521         }
 522
 523         close(st->fd);
 524         st->fd = -1;
 525
 526         DEBUG(3,("Calling RODC DNS name update script %s\n", st->tmp_path));
 527         req = samba_runcmd_send(st,
 528                                 s->task->event_ctx,
 529                                 timeval_current_ofs(20, 0),
 530                                 2, 0,
 531                                 dns_update_command,
 532                                 "--update-list",
 533                                 st->tmp_path,
 534                                 NULL);
 535         NT_STATUS_HAVE_NO_MEMORY(req);
 536
 537         /* setup the callback */
 538         tevent_req_set_callback(req, dnsupdate_RODC_callback, st);
 539
 540         msg->defer_reply = true;
 541
 542         return NT_STATUS_OK;
 543 }
 544
 545 /*
 546   startup the dns update task
 547 */
 548 static void dnsupdate_task_init(struct task_server *task)
 549 {
 550         NTSTATUS status;
 551         struct dnsupdate_service *service;
 552
 553         if (lpcfg_server_role(task->lp_ctx) != ROLE_DOMAIN_CONTROLLER) {
 554                 /* not useful for non-DC */
 555                 return;
 556         }
 557
 558         task_server_set_title(task, "task[dnsupdate]");
 559
 560         service = talloc_zero(task, struct dnsupdate_service);
 561         if (!service) {
 562                 task_server_terminate(task, "dnsupdate_task_init: out of memory", true);
 563                 return;
 564         }
 565         service->task           = task;
 566         task->private_data      = service;
 567
 568         service->system_session_info = system_session(service->task->lp_ctx);
 569         if (!service->system_session_info) {
 570                 task_server_terminate(task,
 571                                       "dnsupdate: Failed to obtain server credentials\n",
 572                                       true);
 573                 return;
 574         }
 575
 576         service->samdb = samdb_connect(service, service->task->event_ctx, task->lp_ctx,
 577                                        service->system_session_info, 0);
 578         if (!service->samdb) {
 579                 task_server_terminate(task, "dnsupdate: Failed to connect to local samdb\n",
 580                                       true);
 581                 return;
 582         }
 583
 584         service->confupdate.interval    = lpcfg_parm_int(task->lp_ctx, NULL,
 585                                                       "dnsupdate", "config interval", 60); /* in seconds */
 586
 587         service->nameupdate.interval    = lpcfg_parm_int(task->lp_ctx, NULL,
 588                                                       "dnsupdate", "name interval", 600); /* in seconds */
 589
 590         dnsupdate_rebuild(service);
 591         status = dnsupdate_confupdate_schedule(service);
 592         if (!NT_STATUS_IS_OK(status)) {
 593                 task_server_terminate(task, talloc_asprintf(task,
 594                                       "dnsupdate: Failed to confupdate schedule: %s\n",
 595                                                             nt_errstr(status)), true);
 596                 return;
 597         }
 598
 599         dnsupdate_check_names(service);
 600         status = dnsupdate_nameupdate_schedule(service);
 601         if (!NT_STATUS_IS_OK(status)) {
 602                 task_server_terminate(task, talloc_asprintf(task,
 603                                       "dnsupdate: Failed to nameupdate schedule: %s\n",
 604                                                             nt_errstr(status)), true);
 605                 return;
 606         }
 607
 608         irpc_add_name(task->msg_ctx, "dnsupdate");
 609
 610         IRPC_REGISTER(task->msg_ctx, irpc, DNSUPDATE_RODC,
 611                       dnsupdate_dnsupdate_RODC, service);
 612
 613         /* create the intial file */
 614         dnsupdate_rebuild(service);
 615
 616 }
 617
 618 /*
 619   register ourselves as a available server
 620 */
 621 NTSTATUS server_service_dnsupdate_init(void)
 622 {
 623         return register_server_service("dnsupdate", dnsupdate_task_init);
 624 }