r25446: Merge some changes I made on the way home from SFO:
[jelmer/samba4-debian.git] / source / wrepl_server / wrepl_server.c
index 50be38e8d64586ab4e9c330579f4dfb83f290efa..f4b48ae916edab1024e806df4cdb342fa8a457aa 100644 (file)
@@ -7,7 +7,7 @@
    
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 2 of the License, or
+   the Free Software Foundation; either version 3 of the License, or
    (at your option) any later version.
    
    This program is distributed in the hope that it will be useful,
    GNU General Public License for more details.
    
    You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software
-   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
 #include "includes.h"
-#include "dlinklist.h"
-#include "lib/events/events.h"
-#include "lib/socket/socket.h"
+#include "lib/util/dlinklist.h"
 #include "smbd/service_task.h"
-#include "smbd/service_stream.h"
+#include "smbd/service.h"
 #include "lib/messaging/irpc.h"
-#include "librpc/gen_ndr/ndr_winsrepl.h"
+#include "librpc/gen_ndr/winsrepl.h"
 #include "wrepl_server/wrepl_server.h"
+#include "nbt_server/wins/winsdb.h"
+#include "ldb/include/ldb.h"
+#include "ldb/include/ldb_errors.h"
+#include "auth/auth.h"
+#include "db_wrap.h"
+#include "param/param.h"
+
+static struct ldb_context *wins_config_db_connect(TALLOC_CTX *mem_ctx)
+{
+       return ldb_wrap_connect(mem_ctx, global_loadparm, private_path(mem_ctx, 
+                               global_loadparm, 
+                               lp_wins_config_url(global_loadparm)),
+                               system_session(mem_ctx), NULL, 0, NULL);
+}
 
-void wreplsrv_terminate_connection(struct wreplsrv_in_connection *wreplconn, const char *reason)
+static uint64_t wins_config_db_get_seqnumber(struct ldb_context *ldb)
 {
-       stream_terminate_connection(wreplconn->conn, reason);
+       int ret;
+       struct ldb_dn *dn;
+       struct ldb_result *res = NULL;
+       TALLOC_CTX *tmp_ctx = talloc_new(ldb);
+       uint64_t seqnumber = 0;
+
+       dn = ldb_dn_new(tmp_ctx, ldb, "@BASEINFO");
+       if (!dn) goto failed;
+
+       /* find the record in the WINS database */
+       ret = ldb_search(ldb, dn, LDB_SCOPE_BASE, 
+                        NULL, NULL, &res);
+       if (ret != LDB_SUCCESS) goto failed;
+       talloc_steal(tmp_ctx, res);
+       if (res->count > 1) goto failed;
+
+       if (res->count == 1) {
+               seqnumber = ldb_msg_find_attr_as_uint64(res->msgs[0], "sequenceNumber", 0);
+       }
+
+failed:
+       talloc_free(tmp_ctx);
+       return seqnumber;
 }
 
 /*
-  called when we get a new connection
+  open winsdb
 */
-static void wreplsrv_accept(struct stream_connection *conn)
+static NTSTATUS wreplsrv_open_winsdb(struct wreplsrv_service *service)
 {
-       struct wreplsrv_service *service = talloc_get_type(conn->private, struct wreplsrv_service);
-       struct wreplsrv_in_connection *wreplconn;
-
-       wreplconn = talloc_zero(conn, struct wreplsrv_in_connection);
-       if (!wreplconn) {
-               stream_terminate_connection(conn, "wreplsrv_accept: out of memory");
-               return;
+       service->wins_db     = winsdb_connect(service, WINSDB_HANDLE_CALLER_WREPL);
+       if (!service->wins_db) {
+               return NT_STATUS_INTERNAL_DB_ERROR;
        }
 
-       wreplconn->conn         = conn;
-       wreplconn->service      = service;
-       wreplconn->our_ip       = socket_get_my_addr(conn->socket, wreplconn);
-       if (!wreplconn->our_ip) {
-               wreplsrv_terminate_connection(wreplconn, "wreplsrv_accept: out of memory");
-               return;
+       service->config.ldb = wins_config_db_connect(service);
+       if (!service->config.ldb) {
+               return NT_STATUS_INTERNAL_DB_ERROR;
        }
 
-       conn->private = wreplconn;
+       /* the default renew interval is 6 days */
+       service->config.renew_interval    = lp_parm_int(global_loadparm, NULL,"wreplsrv","renew_interval", 6*24*60*60);
+
+       /* the default tombstone (extinction) interval is 6 days */
+       service->config.tombstone_interval= lp_parm_int(global_loadparm, NULL,"wreplsrv","tombstone_interval", 6*24*60*60);
+
+       /* the default tombstone (extinction) timeout is 1 day */
+       service->config.tombstone_timeout = lp_parm_int(global_loadparm, NULL,"wreplsrv","tombstone_timeout", 1*24*60*60);
+
+       /* the default tombstone extra timeout is 3 days */
+       service->config.tombstone_extra_timeout = lp_parm_int(global_loadparm, NULL,"wreplsrv","tombstone_extra_timeout", 3*24*60*60);
+
+       /* the default verify interval is 24 days */
+       service->config.verify_interval   = lp_parm_int(global_loadparm, NULL,"wreplsrv","verify_interval", 24*24*60*60);
+
+       /* the default scavenging interval is 'renew_interval/2' */
+       service->config.scavenging_interval=lp_parm_int(global_loadparm, NULL,"wreplsrv","scavenging_interval",
+                                                       service->config.renew_interval/2);
+
+       /* the maximun interval to the next periodic processing event */
+       service->config.periodic_interval = lp_parm_int(global_loadparm, NULL,"wreplsrv","periodic_interval", 15);
 
-       irpc_add_name(conn->msg_ctx, "wreplsrv_connection");
+       return NT_STATUS_OK;
+}
+
+struct wreplsrv_partner *wreplsrv_find_partner(struct wreplsrv_service *service, const char *peer_addr)
+{
+       struct wreplsrv_partner *cur;
+
+       for (cur = service->partners; cur; cur = cur->next) {
+               if (strcmp(cur->address, peer_addr) == 0) {
+                       return cur;
+               }
+       }
+
+       return NULL;
 }
 
 /*
-  receive some data on a WREPL connection
+  load our replication partners
 */
-static void wreplsrv_recv(struct stream_connection *conn, uint16_t flags)
+NTSTATUS wreplsrv_load_partners(struct wreplsrv_service *service)
 {
-       struct wreplsrv_in_connection *wreplconn = talloc_get_type(conn->private, struct wreplsrv_in_connection);
-       struct wreplsrv_in_call *call;
-       DATA_BLOB packet_in_blob;
-       DATA_BLOB packet_out_blob;
-       struct wrepl_wrap packet_out_wrap;
-       struct data_blob_list_item *rep;
-       NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
-       size_t nread;
-
-       /* avoid recursion, because of half async code */
-       if (wreplconn->processing) {
-               EVENT_FD_NOT_READABLE(conn->event.fde);
-               return;
+       struct wreplsrv_partner *partner;
+       struct ldb_result *res = NULL;
+       int ret;
+       TALLOC_CTX *tmp_ctx;
+       int i;
+       uint64_t new_seqnumber;
+
+       new_seqnumber = wins_config_db_get_seqnumber(service->config.ldb);
+
+       /* if it's not the first run and nothing changed we're done */
+       if (service->config.seqnumber != 0 && service->config.seqnumber == new_seqnumber) {
+               return NT_STATUS_OK;
+       }
+
+       tmp_ctx = talloc_new(service);
+       NT_STATUS_HAVE_NO_MEMORY(tmp_ctx);
+
+       service->config.seqnumber = new_seqnumber;
+
+       /* find the record in the WINS database */
+       ret = ldb_search(service->config.ldb, ldb_dn_new(tmp_ctx, service->config.ldb, "CN=PARTNERS"), LDB_SCOPE_SUBTREE,
+                        "(objectClass=wreplPartner)", NULL, &res);
+       if (ret != LDB_SUCCESS) goto failed;
+       talloc_steal(tmp_ctx, res);
+
+       /* first disable all existing partners */
+       for (partner=service->partners; partner; partner = partner->next) {
+               partner->type = WINSREPL_PARTNER_NONE;
        }
 
-       if (wreplconn->partial.length == 0) {
-               wreplconn->partial = data_blob_talloc(wreplconn, NULL, 4);
-               if (wreplconn->partial.data == NULL) {
-                       status = NT_STATUS_NO_MEMORY;
+       for (i=0; i < res->count; i++) {
+               const char *address;
+
+               address = ldb_msg_find_attr_as_string(res->msgs[i], "address", NULL);
+               if (!address) {
                        goto failed;
                }
-               wreplconn->partial_read = 0;
+
+               partner = wreplsrv_find_partner(service, address);
+               if (partner) {
+                       if (partner->name != partner->address) {
+                               talloc_free(discard_const(partner->name));
+                       }
+                       partner->name = NULL;
+                       talloc_free(discard_const(partner->our_address));
+                       partner->our_address = NULL;
+
+                       /* force rescheduling of pulling */
+                       partner->pull.next_run = timeval_zero();
+               } else {
+                       partner = talloc_zero(service, struct wreplsrv_partner);
+                       if (partner == NULL) goto failed;
+
+                       partner->service = service;
+                       partner->address = address;
+                       talloc_steal(partner, partner->address);
+
+                       DLIST_ADD_END(service->partners, partner, struct wreplsrv_partner *);
+               }
+
+               partner->name                   = ldb_msg_find_attr_as_string(res->msgs[i], "name", partner->address);
+               talloc_steal(partner, partner->name);
+               partner->our_address            = ldb_msg_find_attr_as_string(res->msgs[i], "ourAddress", NULL);
+               talloc_steal(partner, partner->our_address);
+
+               partner->type                   = ldb_msg_find_attr_as_uint(res->msgs[i], "type", WINSREPL_PARTNER_BOTH);
+               partner->pull.interval          = ldb_msg_find_attr_as_uint(res->msgs[i], "pullInterval",
+                                                                   WINSREPL_DEFAULT_PULL_INTERVAL);
+               partner->pull.retry_interval    = ldb_msg_find_attr_as_uint(res->msgs[i], "pullRetryInterval",
+                                                                   WINSREPL_DEFAULT_PULL_RETRY_INTERVAL);
+               partner->push.change_count      = ldb_msg_find_attr_as_uint(res->msgs[i], "pushChangeCount",
+                                                                   WINSREPL_DEFAULT_PUSH_CHANGE_COUNT);
+               partner->push.use_inform        = ldb_msg_find_attr_as_uint(res->msgs[i], "pushUseInform", False);
+
+               DEBUG(3,("wreplsrv_load_partners: found partner: %s type: 0x%X\n",
+                       partner->address, partner->type));
        }
 
-       /* read in the packet length */
-       if (wreplconn->partial_read < 4) {
-               uint32_t packet_length;
+       DEBUG(2,("wreplsrv_load_partners: %u partners found: wins_config_db seqnumber %llu\n",
+               res->count, (unsigned long long)service->config.seqnumber));
 
-               status = socket_recv(conn->socket, 
-                                    wreplconn->partial.data + wreplconn->partial_read,
-                                    4 - wreplconn->partial_read,
-                                    &nread, 0);
-               if (NT_STATUS_IS_ERR(status)) goto failed;
-               if (!NT_STATUS_IS_OK(status)) return;
+       talloc_free(tmp_ctx);
+       return NT_STATUS_OK;
+failed:
+       talloc_free(tmp_ctx);
+       return NT_STATUS_FOOBAR;
+}
 
-               wreplconn->partial_read += nread;
-               if (wreplconn->partial_read != 4) return;
+NTSTATUS wreplsrv_fill_wrepl_table(struct wreplsrv_service *service,
+                                  TALLOC_CTX *mem_ctx,
+                                  struct wrepl_table *table_out,
+                                  const char *initiator,
+                                  BOOL full_table)
+{
+       struct wreplsrv_owner *cur;
+       uint32_t i = 0;
 
-               packet_length = RIVAL(wreplconn->partial.data, 0) + 4;
+       table_out->partner_count        = 0;
+       table_out->partners             = NULL;
+       table_out->initiator            = initiator;
 
-               wreplconn->partial.data = talloc_realloc(wreplconn, wreplconn->partial.data, 
-                                                        uint8_t, packet_length);
-               if (wreplconn->partial.data == NULL) {
-                       status = NT_STATUS_NO_MEMORY;
-                       goto failed;
+       for (cur = service->table; cur; cur = cur->next) {
+               if (full_table) {
+                       table_out->partner_count++;
+                       continue;
                }
-               wreplconn->partial.length = packet_length;
+
+               if (strcmp(initiator, cur->owner.address) != 0) continue;
+
+               table_out->partner_count++;
+               break;
        }
 
-       /* read in the body */
-       status = socket_recv(conn->socket, 
-                            wreplconn->partial.data + wreplconn->partial_read,
-                            wreplconn->partial.length - wreplconn->partial_read,
-                            &nread, 0);
-       if (NT_STATUS_IS_ERR(status)) goto failed;
-       if (!NT_STATUS_IS_OK(status)) return;
+       table_out->partners = talloc_array(mem_ctx, struct wrepl_wins_owner, table_out->partner_count);
+       NT_STATUS_HAVE_NO_MEMORY(table_out->partners);
 
-       wreplconn->partial_read += nread;
-       if (wreplconn->partial_read != wreplconn->partial.length) return;
+       for (cur = service->table; cur && i < table_out->partner_count; cur = cur->next) {
+               /*
+                * if it's our local entry
+                * update the max version
+                */
+               if (cur == service->owner) {
+                       cur->owner.max_version = winsdb_get_maxVersion(service->wins_db);
+               }
 
-       packet_in_blob.data = wreplconn->partial.data + 4;
-       packet_in_blob.length = wreplconn->partial.length - 4;
+               if (full_table) {
+                       table_out->partners[i] = cur->owner;
+                       i++;
+                       continue;
+               }
 
-       call = talloc(wreplconn, struct wreplsrv_in_call);
-       if (!call) {
-               status = NT_STATUS_NO_MEMORY;
-               goto failed;
-       }
-       call->wreplconn = wreplconn;
+               if (strcmp(initiator, cur->owner.address) != 0) continue;
 
-       /* we have a full request - parse it */
-       status = ndr_pull_struct_blob(&packet_in_blob,
-                                     call, &call->req_packet,
-                                     (ndr_pull_flags_fn_t)ndr_pull_wrepl_packet);
-       if (!NT_STATUS_IS_OK(status)) {
-               DEBUG(2,("Failed to parse incoming WINS-Replication packet - %s\n",
-                        nt_errstr(status)));
-               DEBUG(10,("packet length %u\n", wreplconn->partial.length));
-               NDR_PRINT_DEBUG(wrepl_packet, &call->req_packet);
-               goto failed;
+               table_out->partners[i] = cur->owner;
+               i++;
+               break;
        }
 
-       /*
-        * we have parsed the request, so we can reset the wreplconn->partial_read,
-        * maybe we could also free wreplconn->partial, but for now we keep it,
-        * and overwrite it the next time
-        */
-       wreplconn->partial_read = 0;
+       return NT_STATUS_OK;
+}
 
-       if (DEBUGLVL(10)) {
-               DEBUG(10,("Received WINS-Replication packet of length %u\n", wreplconn->partial.length));
-               NDR_PRINT_DEBUG(wrepl_packet, &call->req_packet);
+struct wreplsrv_owner *wreplsrv_find_owner(struct wreplsrv_service *service,
+                                          struct wreplsrv_owner *table,
+                                          const char *wins_owner)
+{
+       struct wreplsrv_owner *cur;
+
+       for (cur = table; cur; cur = cur->next) {
+               if (strcmp(cur->owner.address, wins_owner) == 0) {
+                       /*
+                        * if it's our local entry
+                        * update the max version
+                        */
+                       if (cur == service->owner) {
+                               cur->owner.max_version = winsdb_get_maxVersion(service->wins_db);
+                       }
+                       return cur;
+               }
        }
 
-       /* actually process the request */
-       wreplconn->processing = True;
-       status = wreplsrv_in_call(call);
-       wreplconn->processing = False;
-       if (!NT_STATUS_IS_OK(status)) goto failed;
+       return NULL;
+}
 
-       /* and now encode the reply */
-       packet_out_wrap.packet = call->rep_packet;
-       status = ndr_push_struct_blob(&packet_out_blob, call, &packet_out_wrap,
-                                     (ndr_push_flags_fn_t)ndr_push_wrepl_wrap);
-       if (!NT_STATUS_IS_OK(status)) goto failed;
+/*
+ update the wins_owner_table max_version, if the given version is the highest version
+ if no entry for the wins_owner exists yet, create one
+*/
+NTSTATUS wreplsrv_add_table(struct wreplsrv_service *service,
+                           TALLOC_CTX *mem_ctx, struct wreplsrv_owner **_table,
+                           const char *wins_owner, uint64_t version)
+{
+       struct wreplsrv_owner *table = *_table;
+       struct wreplsrv_owner *cur;
 
-       if (DEBUGLVL(10)) {
-               DEBUG(10,("Sending WINS-Replication packet of length %d\n", (int)packet_out_blob.length));
-               NDR_PRINT_DEBUG(wrepl_packet, &call->rep_packet);
+       if (!wins_owner || strcmp(wins_owner, "0.0.0.0") == 0) {
+               wins_owner = service->wins_db->local_owner;
        }
 
-       rep = talloc(wreplconn, struct data_blob_list_item);
-       if (!rep) {
-               status = NT_STATUS_NO_MEMORY;
-               goto failed;
-       }
+       cur = wreplsrv_find_owner(service, table, wins_owner);
+
+       /* if it doesn't exists yet, create one */
+       if (!cur) {
+               cur = talloc_zero(mem_ctx, struct wreplsrv_owner);
+               NT_STATUS_HAVE_NO_MEMORY(cur);
+
+               cur->owner.address      = talloc_strdup(cur, wins_owner);
+               NT_STATUS_HAVE_NO_MEMORY(cur->owner.address);
+               cur->owner.min_version  = 0;
+               cur->owner.max_version  = 0;
+               cur->owner.type         = 1; /* don't know why this is always 1 */
 
-       rep->blob = packet_out_blob;
-       talloc_steal(rep, packet_out_blob.data);
-       /* we don't need the call anymore */
-       talloc_free(call);
+               cur->partner            = wreplsrv_find_partner(service, wins_owner);
 
-       if (!wreplconn->send_queue) {
-               EVENT_FD_WRITEABLE(conn->event.fde);
+               DLIST_ADD_END(table, cur, struct wreplsrv_owner *);
+               *_table = table;
        }
-       DLIST_ADD_END(wreplconn->send_queue, rep, struct data_blob_list_item *);
 
-       EVENT_FD_READABLE(conn->event.fde);
-       return;
+       /* the min_version is always 0 here, and won't be updated */
+
+       /* if the given version is higher than the current max_version, update */
+       if (cur->owner.max_version < version) {
+               cur->owner.max_version = version;
+               /* if it's for our local db, we need to update the wins.ldb too */
+               if (cur == service->owner) {
+                       uint64_t ret;
+                       ret = winsdb_set_maxVersion(service->wins_db, cur->owner.max_version);
+                       if (ret != cur->owner.max_version) {
+                               DEBUG(0,("winsdb_set_maxVersion(%llu) failed: %llu\n",
+                                        (unsigned long long)cur->owner.max_version, 
+                                        (unsigned long long)ret));
+                               return NT_STATUS_INTERNAL_DB_CORRUPTION;
+                       }
+               }
+       }
 
-failed:
-       wreplsrv_terminate_connection(wreplconn, nt_errstr(status));
+       return NT_STATUS_OK;
 }
 
 /*
-  called when we can write to a connection
+  load the partner table
 */
-static void wreplsrv_send(struct stream_connection *conn, uint16_t flags)
+static NTSTATUS wreplsrv_load_table(struct wreplsrv_service *service)
 {
-       struct wreplsrv_in_connection *wreplconn = talloc_get_type(conn->private, struct wreplsrv_in_connection);
+       struct ldb_result *res = NULL;
+       int ret;
        NTSTATUS status;
+       TALLOC_CTX *tmp_ctx = talloc_new(service);
+       struct ldb_context *ldb = service->wins_db->ldb;
+       int i;
+       struct wreplsrv_owner *local_owner;
+       const char *wins_owner;
+       uint64_t version;
+       const char * const attrs[] = {
+               "winsOwner",
+               "versionID",
+               NULL
+       };
 
-       while (wreplconn->send_queue) {
-               struct data_blob_list_item *rep = wreplconn->send_queue;
-               size_t sendlen;
-
-               status = socket_send(conn->socket, &rep->blob, &sendlen, 0);
-               if (NT_STATUS_IS_ERR(status)) goto failed;
-               if (!NT_STATUS_IS_OK(status)) return;
-
-               rep->blob.length -= sendlen;
-               rep->blob.data   += sendlen;
+       /*
+        * make sure we have our local entry in the list,
+        * but we set service->owner when we're done
+        * to avoid to many calls to wreplsrv_local_max_version()
+        */
+       status = wreplsrv_add_table(service,
+                                   service, &service->table,
+                                   service->wins_db->local_owner, 0);
+       if (!NT_STATUS_IS_OK(status)) goto failed;
+       local_owner = wreplsrv_find_owner(service, service->table, service->wins_db->local_owner);
+       if (!local_owner) {
+               status = NT_STATUS_INTERNAL_ERROR;
+               goto failed;
+       }
 
-               if (rep->blob.length == 0) {
-                       DLIST_REMOVE(wreplconn->send_queue, rep);
-                       talloc_free(rep);
-               }
+       /* find the record in the WINS database */
+       ret = ldb_search(ldb, NULL, LDB_SCOPE_SUBTREE,
+                        "(objectClass=winsRecord)", attrs, &res);
+       status = NT_STATUS_INTERNAL_DB_CORRUPTION;
+       if (ret != LDB_SUCCESS) goto failed;
+       talloc_steal(tmp_ctx, res);
+
+       for (i=0; i < res->count; i++) {
+               wins_owner     = ldb_msg_find_attr_as_string(res->msgs[i], "winsOwner", NULL);
+               version        = ldb_msg_find_attr_as_uint64(res->msgs[i], "versionID", 0);
+
+               status = wreplsrv_add_table(service,
+                                           service, &service->table,
+                                           wins_owner, version);
+               if (!NT_STATUS_IS_OK(status)) goto failed;
+               talloc_free(res->msgs[i]);
        }
 
-       EVENT_FD_NOT_WRITEABLE(conn->event.fde);
-       return;
+       /*
+        * this makes sure we call wreplsrv_local_max_version() before returning in
+        * wreplsrv_find_owner()
+        */
+       service->owner = local_owner;
 
+       /*
+        * this makes sure the maxVersion in the database is updated,
+        * with the highest version we found, if this is higher than the current stored one
+        */
+       status = wreplsrv_add_table(service,
+                                   service, &service->table,
+                                   service->wins_db->local_owner, local_owner->owner.max_version);
+       if (!NT_STATUS_IS_OK(status)) goto failed;
+
+       talloc_free(tmp_ctx);
+       return NT_STATUS_OK;
 failed:
-       wreplsrv_terminate_connection(wreplconn, nt_errstr(status));
+       talloc_free(tmp_ctx);
+       return status;
 }
 
-static const struct stream_server_ops wreplsrv_stream_ops = {
-       .name                   = "wreplsrv",
-       .accept_connection      = wreplsrv_accept,
-       .recv_handler           = wreplsrv_recv,
-       .send_handler           = wreplsrv_send,
-};
-
 /*
-  startup the wrepl port 42 server sockets
+  setup our replication partners
 */
-static NTSTATUS wreplsrv_setup_sockets(struct wreplsrv_service *service)
+static NTSTATUS wreplsrv_setup_partners(struct wreplsrv_service *service)
 {
        NTSTATUS status;
-       struct task_server *task = service->task;
-       const struct model_ops *model_ops;
-       const char *address;
-       uint16_t port = WINS_REPLICATION_PORT;
-
-       /* within the wrepl task we want to be a single process, so
-          ask for the single process model ops and pass these to the
-          stream_setup_socket() call. */
-       model_ops = process_model_byname("single");
-       if (!model_ops) {
-               DEBUG(0,("Can't find 'single' process model_ops"));
-               return NT_STATUS_INTERNAL_ERROR;
-       }
 
-       if (lp_interfaces() && lp_bind_interfaces_only()) {
-               int num_interfaces = iface_count();
-               int i;
-
-               /* We have been given an interfaces line, and been 
-                  told to only bind to those interfaces. Create a
-                  socket per interface and bind to only these.
-               */
-               for(i = 0; i < num_interfaces; i++) {
-                       address = iface_n_ip(i);
-                       status = stream_setup_socket(task->event_ctx, model_ops, &wreplsrv_stream_ops,
-                                                    "ipv4", address, &port, NULL);
-                       if (!NT_STATUS_IS_OK(status)) {
-                               DEBUG(0,("stream_setup_socket(address=%s,port=%u) failed - %s\n",
-                                        address, port, nt_errstr(status)));
-                               return status;
-                       }
-               }
-       } else {
-               address = lp_socket_address();
-               status = stream_setup_socket(task->event_ctx, model_ops, &wreplsrv_stream_ops,
-                                            "ipv4", address, &port, NULL);
-               if (!NT_STATUS_IS_OK(status)) {
-                       DEBUG(0,("stream_setup_socket(address=%s,port=%u) failed - %s\n",
-                                address, port, nt_errstr(status)));
-                       return status;
-               }
-       }
+       status = wreplsrv_load_partners(service);
+       NT_STATUS_NOT_OK_RETURN(status);
+
+       status = wreplsrv_load_table(service);
+       NT_STATUS_NOT_OK_RETURN(status);
 
        return NT_STATUS_OK;
 }
@@ -300,17 +443,34 @@ static void wreplsrv_task_init(struct task_server *task)
        NTSTATUS status;
        struct wreplsrv_service *service;
 
+       task_server_set_title(task, "task[wreplsrv]");
+
        service = talloc_zero(task, struct wreplsrv_service);
        if (!service) {
                task_server_terminate(task, "wreplsrv_task_init: out of memory");
                return;
        }
-       service->task = task;
-       task->private = service;
+       service->task           = task;
+       service->startup_time   = timeval_current();
+       task->private           = service;
 
        /*
-        * TODO: setup up all partners, and open the winsdb
+        * setup up all partners, and open the winsdb
         */
+       status = wreplsrv_open_winsdb(service);
+       if (!NT_STATUS_IS_OK(status)) {
+               task_server_terminate(task, "wreplsrv_task_init: wreplsrv_open_winsdb() failed");
+               return;
+       }
+
+       /*
+        * setup timed events for each partner we want to pull from
+        */
+       status = wreplsrv_setup_partners(service);
+       if (!NT_STATUS_IS_OK(status)) {
+               task_server_terminate(task, "wreplsrv_task_init: wreplsrv_setup_partners() failed");
+               return;
+       }
 
        /* 
         * setup listen sockets, so we can anwser requests from our partners,
@@ -322,9 +482,11 @@ static void wreplsrv_task_init(struct task_server *task)
                return;
        }
 
-       /*
-        * TODO: setup timed events for each partner we want to pull from
-        */
+       status = wreplsrv_setup_periodic(service);
+       if (!NT_STATUS_IS_OK(status)) {
+               task_server_terminate(task, "wreplsrv_task_init: wreplsrv_setup_periodic() failed");
+               return;
+       }
 
        irpc_add_name(task->msg_ctx, "wrepl_server");
 }
@@ -334,6 +496,10 @@ static void wreplsrv_task_init(struct task_server *task)
  */
 static NTSTATUS wreplsrv_init(struct event_context *event_ctx, const struct model_ops *model_ops)
 {
+       if (!lp_wins_support(global_loadparm)) {
+               return NT_STATUS_OK;
+       }
+
        return task_server_startup(event_ctx, model_ops, wreplsrv_task_init);
 }