source4/wrepl_server/wrepl_in_call.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    WINS Replication server
   5
   6    Copyright (C) Stefan Metzmacher      2005
   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 #include "includes.h"
  23 #include "lib/events/events.h"
  24 #include "lib/socket/socket.h"
  25 #include "smbd/service_stream.h"
  26 #include "libcli/wrepl/winsrepl.h"
  27 #include "wrepl_server/wrepl_server.h"
  28 #include "libcli/composite/composite.h"
  29 #include "nbt_server/wins/winsdb.h"
  30 #include "lib/ldb/include/ldb.h"
  31 #include "lib/ldb/include/ldb_errors.h"
  32 #include "system/time.h"
  33 #include "lib/util/tsort.h"
  34
  35 static NTSTATUS wreplsrv_in_start_association(struct wreplsrv_in_call *call)
  36 {
  37         struct wrepl_start *start       = &call->req_packet.message.start;
  38         struct wrepl_start *start_reply = &call->rep_packet.message.start_reply;
  39
  40         if (call->req_packet.opcode & WREPL_OPCODE_BITS) {
  41                 /*
  42                  *if the assoc_ctx doesn't match ignore the packet
  43                  */
  44                 if ((call->req_packet.assoc_ctx != call->wreplconn->assoc_ctx.our_ctx)
  45                    && (call->req_packet.assoc_ctx != 0)) {
  46                         return ERROR_INVALID_PARAMETER;
  47                 }
  48         } else {
  49                 call->wreplconn->assoc_ctx.our_ctx = WREPLSRV_INVALID_ASSOC_CTX;
  50                 return NT_STATUS_OK;
  51         }
  52
  53 /*
  54  * it seems that we don't know all details about the start_association
  55  * to support replication with NT4 (it sends 1.1 instead of 5.2)
  56  * we ignore the version numbers until we know all details
  57  */
  58 #if 0
  59         if (start->minor_version != 2 || start->major_version != 5) {
  60                 /* w2k terminate the connection if the versions doesn't match */
  61                 return NT_STATUS_UNKNOWN_REVISION;
  62         }
  63 #endif
  64
  65         call->wreplconn->assoc_ctx.stopped      = false;
  66         call->wreplconn->assoc_ctx.our_ctx      = WREPLSRV_VALID_ASSOC_CTX;
  67         call->wreplconn->assoc_ctx.peer_ctx     = start->assoc_ctx;
  68
  69         call->rep_packet.mess_type              = WREPL_START_ASSOCIATION_REPLY;
  70         start_reply->assoc_ctx                  = call->wreplconn->assoc_ctx.our_ctx;
  71         start_reply->minor_version              = 2;
  72         start_reply->major_version              = 5;
  73
  74         /*
  75          * nt4 uses 41 bytes for the start_association call
  76          * so do it the same and as we don't know the meanings of this bytes
  77          * we just send zeros and nt4, w2k and w2k3 seems to be happy with this
  78          *
  79          * if we don't do this nt4 uses an old version of the wins replication protocol
  80          * and that would break nt4 <-> samba replication
  81          */
  82         call->rep_packet.padding                = data_blob_talloc(call, NULL, 21);
  83         NT_STATUS_HAVE_NO_MEMORY(call->rep_packet.padding.data);
  84
  85         memset(call->rep_packet.padding.data, 0, call->rep_packet.padding.length);
  86
  87         return NT_STATUS_OK;
  88 }
  89
  90 static NTSTATUS wreplsrv_in_stop_assoc_ctx(struct wreplsrv_in_call *call)
  91 {
  92         struct wrepl_stop *stop_out             = &call->rep_packet.message.stop;
  93
  94         call->wreplconn->assoc_ctx.stopped      = true;
  95
  96         call->rep_packet.mess_type              = WREPL_STOP_ASSOCIATION;
  97         stop_out->reason                        = 4;
  98
  99         return NT_STATUS_OK;
 100 }
 101
 102 static NTSTATUS wreplsrv_in_stop_association(struct wreplsrv_in_call *call)
 103 {
 104         /*
 105          * w2k only check the assoc_ctx if the opcode has the 0x00007800 bits are set
 106          */
 107         if (call->req_packet.opcode & WREPL_OPCODE_BITS) {
 108                 /*
 109                  *if the assoc_ctx doesn't match ignore the packet
 110                  */
 111                 if (call->req_packet.assoc_ctx != call->wreplconn->assoc_ctx.our_ctx) {
 112                         return ERROR_INVALID_PARAMETER;
 113                 }
 114                 /* when the opcode bits are set the connection should be directly terminated */
 115                 return NT_STATUS_CONNECTION_RESET;
 116         }
 117
 118         if (call->wreplconn->assoc_ctx.stopped) {
 119                 /* this causes the connection to be directly terminated */
 120                 return NT_STATUS_CONNECTION_RESET;
 121         }
 122
 123         /* this will cause to not receive packets anymore and terminate the connection if the reply is send */
 124         call->terminate_after_send = true;
 125         return wreplsrv_in_stop_assoc_ctx(call);
 126 }
 127
 128 static NTSTATUS wreplsrv_in_table_query(struct wreplsrv_in_call *call)
 129 {
 130         struct wreplsrv_service *service = call->wreplconn->service;
 131         struct wrepl_replication *repl_out = &call->rep_packet.message.replication;
 132         struct wrepl_table *table_out = &call->rep_packet.message.replication.info.table;
 133
 134         repl_out->command = WREPL_REPL_TABLE_REPLY;
 135
 136         return wreplsrv_fill_wrepl_table(service, call, table_out,
 137                                          service->wins_db->local_owner, true);
 138 }
 139
 140 static int wreplsrv_in_sort_wins_name(struct wrepl_wins_name *n1,
 141                                       struct wrepl_wins_name *n2)
 142 {
 143         if (n1->id < n2->id) return -1;
 144         if (n1->id > n2->id) return 1;
 145         return 0;
 146 }
 147
 148 static NTSTATUS wreplsrv_record2wins_name(TALLOC_CTX *mem_ctx,
 149                                           struct wrepl_wins_name *name,
 150                                           struct winsdb_record *rec)
 151 {
 152         uint32_t num_ips, i;
 153         struct wrepl_ip *ips;
 154
 155         name->name              = rec->name;
 156         talloc_steal(mem_ctx, rec->name);
 157
 158         name->id                = rec->version;
 159         name->unknown           = "255.255.255.255";
 160
 161         name->flags             = WREPL_NAME_FLAGS(rec->type, rec->state, rec->node, rec->is_static);
 162
 163         switch (name->flags & 2) {
 164         case 0:
 165                 name->addresses.ip                      = rec->addresses[0]->address;
 166                 talloc_steal(mem_ctx, rec->addresses[0]->address);
 167                 break;
 168         case 2:
 169                 num_ips = winsdb_addr_list_length(rec->addresses);
 170                 ips     = talloc_array(mem_ctx, struct wrepl_ip, num_ips);
 171                 NT_STATUS_HAVE_NO_MEMORY(ips);
 172
 173                 for (i = 0; i < num_ips; i++) {
 174                         ips[i].owner    = rec->addresses[i]->wins_owner;
 175                         talloc_steal(ips, rec->addresses[i]->wins_owner);
 176                         ips[i].ip       = rec->addresses[i]->address;
 177                         talloc_steal(ips, rec->addresses[i]->address);
 178                 }
 179
 180                 name->addresses.addresses.num_ips       = num_ips;
 181                 name->addresses.addresses.ips           = ips;
 182                 break;
 183         }
 184
 185         return NT_STATUS_OK;
 186 }
 187
 188 static NTSTATUS wreplsrv_in_send_request(struct wreplsrv_in_call *call)
 189 {
 190         struct wreplsrv_service *service = call->wreplconn->service;
 191         struct wrepl_wins_owner *owner_in = &call->req_packet.message.replication.info.owner;
 192         struct wrepl_replication *repl_out = &call->rep_packet.message.replication;
 193         struct wrepl_send_reply *reply_out = &call->rep_packet.message.replication.info.reply;
 194         struct wreplsrv_owner *owner;
 195         const char *owner_filter;
 196         const char *filter;
 197         struct ldb_result *res = NULL;
 198         int ret;
 199         struct wrepl_wins_name *names;
 200         struct winsdb_record *rec;
 201         NTSTATUS status;
 202         uint32_t i, j;
 203         time_t now = time(NULL);
 204
 205         owner = wreplsrv_find_owner(service, service->table, owner_in->address);
 206
 207         repl_out->command       = WREPL_REPL_SEND_REPLY;
 208         reply_out->num_names    = 0;
 209         reply_out->names        = NULL;
 210
 211         /*
 212          * if we didn't know this owner, must be a bug in the partners client code...
 213          * return an empty list.
 214          */
 215         if (!owner) {
 216                 DEBUG(2,("WINSREPL:reply [0] records unknown owner[%s] to partner[%s]\n",
 217                         owner_in->address, call->wreplconn->partner->address));
 218                 return NT_STATUS_OK;
 219         }
 220
 221         /*
 222          * the client sends a max_version of 0, interpret it as
 223          * (uint64_t)-1
 224          */
 225         if (owner_in->max_version == 0) {
 226                 owner_in->max_version = (uint64_t)-1;
 227         }
 228
 229         /*
 230          * if the partner ask for nothing, or give invalid ranges,
 231          * return an empty list.
 232          */
 233         if (owner_in->min_version > owner_in->max_version) {
 234                 DEBUG(2,("WINSREPL:reply [0] records owner[%s] min[%llu] max[%llu] to partner[%s]\n",
 235                         owner_in->address,
 236                         (long long)owner_in->min_version,
 237                         (long long)owner_in->max_version,
 238                         call->wreplconn->partner->address));
 239                 return NT_STATUS_OK;
 240         }
 241
 242         /*
 243          * if the partner has already all records for nothing, or give invalid ranges,
 244          * return an empty list.
 245          */
 246         if (owner_in->min_version > owner->owner.max_version) {
 247                 DEBUG(2,("WINSREPL:reply [0] records owner[%s] min[%llu] max[%llu] to partner[%s]\n",
 248                         owner_in->address,
 249                         (long long)owner_in->min_version,
 250                         (long long)owner_in->max_version,
 251                         call->wreplconn->partner->address));
 252                 return NT_STATUS_OK;
 253         }
 254
 255         owner_filter = wreplsrv_owner_filter(service, call, owner->owner.address);
 256         NT_STATUS_HAVE_NO_MEMORY(owner_filter);
 257         filter = talloc_asprintf(call,
 258                                  "(&%s(objectClass=winsRecord)"
 259                                  "(|(recordState=%u)(recordState=%u))"
 260                                  "(versionID>=%llu)(versionID<=%llu))",
 261                                  owner_filter,
 262                                  WREPL_STATE_ACTIVE, WREPL_STATE_TOMBSTONE,
 263                                  (long long)owner_in->min_version,
 264                                  (long long)owner_in->max_version);
 265         NT_STATUS_HAVE_NO_MEMORY(filter);
 266         ret = ldb_search(service->wins_db->ldb, call, &res, NULL, LDB_SCOPE_SUBTREE, NULL, "%s", filter);
 267         if (ret != LDB_SUCCESS) return NT_STATUS_INTERNAL_DB_CORRUPTION;
 268         DEBUG(10,("WINSREPL: filter '%s' count %d\n", filter, res->count));
 269
 270         if (res->count == 0) {
 271                 DEBUG(2,("WINSREPL:reply [%u] records owner[%s] min[%llu] max[%llu] to partner[%s]\n",
 272                         res->count, owner_in->address,
 273                         (long long)owner_in->min_version,
 274                         (long long)owner_in->max_version,
 275                         call->wreplconn->partner->address));
 276                 return NT_STATUS_OK;
 277         }
 278
 279         names = talloc_array(call, struct wrepl_wins_name, res->count);
 280         NT_STATUS_HAVE_NO_MEMORY(names);
 281
 282         for (i=0, j=0; i < res->count; i++) {
 283                 status = winsdb_record(service->wins_db, res->msgs[i], call, now, &rec);
 284                 NT_STATUS_NOT_OK_RETURN(status);
 285
 286                 /*
 287                  * it's possible that winsdb_record() made the record RELEASED
 288                  * because it's expired, but in the database it's still stored
 289                  * as ACTIVE...
 290                  *
 291                  * make sure we really only replicate ACTIVE and TOMBSTONE records
 292                  */
 293                 if (rec->state == WREPL_STATE_ACTIVE || rec->state == WREPL_STATE_TOMBSTONE) {
 294                         status = wreplsrv_record2wins_name(names, &names[j], rec);
 295                         NT_STATUS_NOT_OK_RETURN(status);
 296                         j++;
 297                 }
 298
 299                 talloc_free(rec);
 300                 talloc_free(res->msgs[i]);
 301         }
 302
 303         /* sort the names before we send them */
 304         TYPESAFE_QSORT(names, j, wreplsrv_in_sort_wins_name);
 305
 306         DEBUG(2,("WINSREPL:reply [%u] records owner[%s] min[%llu] max[%llu] to partner[%s]\n",
 307                 j, owner_in->address,
 308                 (long long)owner_in->min_version,
 309                 (long long)owner_in->max_version,
 310                 call->wreplconn->partner->address));
 311
 312         reply_out->num_names    = j;
 313         reply_out->names        = names;
 314
 315         return NT_STATUS_OK;
 316 }
 317
 318 struct wreplsrv_in_update_state {
 319         struct wreplsrv_in_connection *wrepl_in;
 320         struct wreplsrv_out_connection *wrepl_out;
 321         struct composite_context *creq;
 322         struct wreplsrv_pull_cycle_io cycle_io;
 323 };
 324
 325 static void wreplsrv_in_update_handler(struct composite_context *creq)
 326 {
 327         struct wreplsrv_in_update_state *update_state = talloc_get_type(creq->async.private_data,
 328                                                         struct wreplsrv_in_update_state);
 329         NTSTATUS status;
 330
 331         status = wreplsrv_pull_cycle_recv(creq);
 332
 333         talloc_free(update_state->wrepl_out);
 334
 335         wreplsrv_terminate_in_connection(update_state->wrepl_in, nt_errstr(status));
 336 }
 337
 338 static NTSTATUS wreplsrv_in_update(struct wreplsrv_in_call *call)
 339 {
 340         struct wreplsrv_in_connection *wrepl_in = call->wreplconn;
 341         struct wreplsrv_out_connection *wrepl_out;
 342         struct wrepl_table *update_in = &call->req_packet.message.replication.info.table;
 343         struct wreplsrv_in_update_state *update_state;
 344         uint16_t fde_flags;
 345
 346         DEBUG(2,("WREPL_REPL_UPDATE: partner[%s] initiator[%s] num_owners[%u]\n",
 347                 call->wreplconn->partner->address,
 348                 update_in->initiator, update_in->partner_count));
 349
 350         /*
 351          * we need to flip the connection into a client connection
 352          * and do a WREPL_REPL_SEND_REQUEST's on the that connection
 353          * and then stop this connection
 354          */
 355         fde_flags = event_get_fd_flags(wrepl_in->conn->event.fde);
 356         talloc_free(wrepl_in->conn->event.fde);
 357         wrepl_in->conn->event.fde = NULL;
 358
 359         update_state = talloc(wrepl_in, struct wreplsrv_in_update_state);
 360         NT_STATUS_HAVE_NO_MEMORY(update_state);
 361
 362         wrepl_out = talloc(update_state, struct wreplsrv_out_connection);
 363         NT_STATUS_HAVE_NO_MEMORY(wrepl_out);
 364         wrepl_out->service              = wrepl_in->service;
 365         wrepl_out->partner              = wrepl_in->partner;
 366         wrepl_out->assoc_ctx.our_ctx    = wrepl_in->assoc_ctx.our_ctx;
 367         wrepl_out->assoc_ctx.peer_ctx   = wrepl_in->assoc_ctx.peer_ctx;
 368         wrepl_out->sock                 = wrepl_socket_merge(wrepl_out,
 369                                                              wrepl_in->conn->event.ctx,
 370                                                              wrepl_in->conn->socket,
 371                                                              wrepl_in->packet);
 372         NT_STATUS_HAVE_NO_MEMORY(wrepl_out->sock);
 373
 374         event_set_fd_flags(wrepl_out->sock->event.fde, fde_flags);
 375
 376         update_state->wrepl_in                  = wrepl_in;
 377         update_state->wrepl_out                 = wrepl_out;
 378         update_state->cycle_io.in.partner       = wrepl_out->partner;
 379         update_state->cycle_io.in.num_owners    = update_in->partner_count;
 380         update_state->cycle_io.in.owners        = update_in->partners;
 381         talloc_steal(update_state, update_in->partners);
 382         update_state->cycle_io.in.wreplconn     = wrepl_out;
 383         update_state->creq = wreplsrv_pull_cycle_send(update_state, &update_state->cycle_io);
 384         if (!update_state->creq) {
 385                 return NT_STATUS_INTERNAL_ERROR;
 386         }
 387
 388         update_state->creq->async.fn            = wreplsrv_in_update_handler;
 389         update_state->creq->async.private_data  = update_state;
 390
 391         return ERROR_INVALID_PARAMETER;
 392 }
 393
 394 static NTSTATUS wreplsrv_in_update2(struct wreplsrv_in_call *call)
 395 {
 396         return wreplsrv_in_update(call);
 397 }
 398
 399 static NTSTATUS wreplsrv_in_inform(struct wreplsrv_in_call *call)
 400 {
 401         struct wrepl_table *inform_in = &call->req_packet.message.replication.info.table;
 402
 403         DEBUG(2,("WREPL_REPL_INFORM: partner[%s] initiator[%s] num_owners[%u]\n",
 404                 call->wreplconn->partner->address,
 405                 inform_in->initiator, inform_in->partner_count));
 406
 407         wreplsrv_out_partner_pull(call->wreplconn->partner, inform_in);
 408
 409         /* we don't reply to WREPL_REPL_INFORM messages */
 410         return ERROR_INVALID_PARAMETER;
 411 }
 412
 413 static NTSTATUS wreplsrv_in_inform2(struct wreplsrv_in_call *call)
 414 {
 415         return wreplsrv_in_inform(call);
 416 }
 417
 418 static NTSTATUS wreplsrv_in_replication(struct wreplsrv_in_call *call)
 419 {
 420         struct wrepl_replication *repl_in = &call->req_packet.message.replication;
 421         NTSTATUS status;
 422
 423         /*
 424          * w2k only check the assoc_ctx if the opcode has the 0x00007800 bits are set
 425          */
 426         if (call->req_packet.opcode & WREPL_OPCODE_BITS) {
 427                 /*
 428                  *if the assoc_ctx doesn't match ignore the packet
 429                  */
 430                 if (call->req_packet.assoc_ctx != call->wreplconn->assoc_ctx.our_ctx) {
 431                         return ERROR_INVALID_PARAMETER;
 432                 }
 433         }
 434
 435         if (!call->wreplconn->partner) {
 436                 struct socket_address *partner_ip = socket_get_peer_addr(call->wreplconn->conn->socket, call);
 437
 438                 call->wreplconn->partner = wreplsrv_find_partner(call->wreplconn->service, partner_ip->addr);
 439                 if (!call->wreplconn->partner) {
 440                         DEBUG(1,("Failing WINS replication from non-partner %s\n",
 441                                  partner_ip ? partner_ip->addr : NULL));
 442                         return wreplsrv_in_stop_assoc_ctx(call);
 443                 }
 444         }
 445
 446         switch (repl_in->command) {
 447                 case WREPL_REPL_TABLE_QUERY:
 448                         if (!(call->wreplconn->partner->type & WINSREPL_PARTNER_PUSH)) {
 449                                 DEBUG(0,("Failing WINS replication TABLE_QUERY from non-push-partner %s\n",
 450                                          call->wreplconn->partner->address));
 451                                 return wreplsrv_in_stop_assoc_ctx(call);
 452                         }
 453                         status = wreplsrv_in_table_query(call);
 454                         break;
 455
 456                 case WREPL_REPL_TABLE_REPLY:
 457                         return ERROR_INVALID_PARAMETER;
 458
 459                 case WREPL_REPL_SEND_REQUEST:
 460                         if (!(call->wreplconn->partner->type & WINSREPL_PARTNER_PUSH)) {
 461                                 DEBUG(0,("Failing WINS replication SEND_REQUESET from non-push-partner %s\n",
 462                                          call->wreplconn->partner->address));
 463                                 return wreplsrv_in_stop_assoc_ctx(call);
 464                         }
 465                         status = wreplsrv_in_send_request(call);
 466                         break;
 467
 468                 case WREPL_REPL_SEND_REPLY:
 469                         return ERROR_INVALID_PARAMETER;
 470
 471                 case WREPL_REPL_UPDATE:
 472                         if (!(call->wreplconn->partner->type & WINSREPL_PARTNER_PULL)) {
 473                                 DEBUG(0,("Failing WINS replication UPDATE from non-pull-partner %s\n",
 474                                          call->wreplconn->partner->address));
 475                                 return wreplsrv_in_stop_assoc_ctx(call);
 476                         }
 477                         status = wreplsrv_in_update(call);
 478                         break;
 479
 480                 case WREPL_REPL_UPDATE2:
 481                         if (!(call->wreplconn->partner->type & WINSREPL_PARTNER_PULL)) {
 482                                 DEBUG(0,("Failing WINS replication UPDATE2 from non-pull-partner %s\n",
 483                                          call->wreplconn->partner->address));
 484                                 return wreplsrv_in_stop_assoc_ctx(call);
 485                         }
 486                         status = wreplsrv_in_update2(call);
 487                         break;
 488
 489                 case WREPL_REPL_INFORM:
 490                         if (!(call->wreplconn->partner->type & WINSREPL_PARTNER_PULL)) {
 491                                 DEBUG(0,("Failing WINS replication INFORM from non-pull-partner %s\n",
 492                                          call->wreplconn->partner->address));
 493                                 return wreplsrv_in_stop_assoc_ctx(call);
 494                         }
 495                         status = wreplsrv_in_inform(call);
 496                         break;
 497
 498                 case WREPL_REPL_INFORM2:
 499                         if (!(call->wreplconn->partner->type & WINSREPL_PARTNER_PULL)) {
 500                                 DEBUG(0,("Failing WINS replication INFORM2 from non-pull-partner %s\n",
 501                                          call->wreplconn->partner->address));
 502                                 return wreplsrv_in_stop_assoc_ctx(call);
 503                         }
 504                         status = wreplsrv_in_inform2(call);
 505                         break;
 506
 507                 default:
 508                         return ERROR_INVALID_PARAMETER;
 509         }
 510
 511         if (NT_STATUS_IS_OK(status)) {
 512                 call->rep_packet.mess_type = WREPL_REPLICATION;
 513         }
 514
 515         return status;
 516 }
 517
 518 static NTSTATUS wreplsrv_in_invalid_assoc_ctx(struct wreplsrv_in_call *call)
 519 {
 520         struct wrepl_start *start       = &call->rep_packet.message.start;
 521
 522         call->rep_packet.opcode         = 0x00008583;
 523         call->rep_packet.assoc_ctx      = 0;
 524         call->rep_packet.mess_type      = WREPL_START_ASSOCIATION;
 525
 526         start->assoc_ctx                = 0x0000000a;
 527         start->minor_version            = 0x0001;
 528         start->major_version            = 0x0000;
 529
 530         call->rep_packet.padding        = data_blob_talloc(call, NULL, 4);
 531         memset(call->rep_packet.padding.data, '\0', call->rep_packet.padding.length);
 532
 533         return NT_STATUS_OK;
 534 }
 535
 536 NTSTATUS wreplsrv_in_call(struct wreplsrv_in_call *call)
 537 {
 538         NTSTATUS status;
 539
 540         if (!(call->req_packet.opcode & WREPL_OPCODE_BITS)
 541             && (call->wreplconn->assoc_ctx.our_ctx == WREPLSRV_INVALID_ASSOC_CTX)) {
 542                 return wreplsrv_in_invalid_assoc_ctx(call);
 543         }
 544
 545         switch (call->req_packet.mess_type) {
 546                 case WREPL_START_ASSOCIATION:
 547                         status = wreplsrv_in_start_association(call);
 548                         break;
 549                 case WREPL_START_ASSOCIATION_REPLY:
 550                         /* this is not valid here, so we ignore it */
 551                         return ERROR_INVALID_PARAMETER;
 552
 553                 case WREPL_STOP_ASSOCIATION:
 554                         status = wreplsrv_in_stop_association(call);
 555                         break;
 556
 557                 case WREPL_REPLICATION:
 558                         status = wreplsrv_in_replication(call);
 559                         break;
 560                 default:
 561                         /* everythingelse is also not valid here, so we ignore it */
 562                         return ERROR_INVALID_PARAMETER;
 563         }
 564
 565         if (call->wreplconn->assoc_ctx.our_ctx == WREPLSRV_INVALID_ASSOC_CTX) {
 566                 return wreplsrv_in_invalid_assoc_ctx(call);
 567         }
 568
 569         if (NT_STATUS_IS_OK(status)) {
 570                 /* let the backend to set some of the opcode bits, but always add the standards */
 571                 call->rep_packet.opcode         |= WREPL_OPCODE_BITS;
 572                 call->rep_packet.assoc_ctx      = call->wreplconn->assoc_ctx.peer_ctx;
 573         }
 574
 575         return status;
 576 }