source4/nbt_server/nbt_server.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    NBT server task
   5
   6    Copyright (C) Andrew Tridgell        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 "samba/service_task.h"
  24 #include "samba/service.h"
  25 #include "nbt_server/nbt_server.h"
  26 #include "nbt_server/wins/winsserver.h"
  27 #include "system/network.h"
  28 #include "lib/socket/netif.h"
  29 #include "auth/auth.h"
  30 #include "dsdb/samdb/samdb.h"
  31 #include "param/param.h"
  32
  33 NTSTATUS server_service_nbtd_init(TALLOC_CTX *);
  34
  35 /*
  36   startup the nbtd task
  37 */
  38 static NTSTATUS nbtd_task_init(struct task_server *task)
  39 {
  40         struct nbtd_server *nbtsrv;
  41         NTSTATUS status;
  42         struct interface *ifaces;
  43
  44         load_interface_list(task, task->lp_ctx, &ifaces);
  45
  46         if (iface_list_count(ifaces) == 0) {
  47                 task_server_terminate(task, "nbtd: no network interfaces configured", false);
  48                 return NT_STATUS_UNSUCCESSFUL;
  49         }
  50
  51         if (lpcfg_disable_netbios(task->lp_ctx)) {
  52                 task_server_terminate(task, "nbtd: 'disable netbios = yes' set in smb.conf, shutting down nbt server", false);
  53                 return NT_STATUS_UNSUCCESSFUL;
  54         }
  55
  56         task_server_set_title(task, "task[nbtd]");
  57
  58         nbtsrv = talloc(task, struct nbtd_server);
  59         if (nbtsrv == NULL) {
  60                 task_server_terminate(task, "nbtd: out of memory", true);
  61                 return NT_STATUS_NO_MEMORY;
  62         }
  63
  64         nbtsrv->task            = task;
  65         nbtsrv->interfaces      = NULL;
  66         nbtsrv->bcast_interface = NULL;
  67         nbtsrv->wins_interface  = NULL;
  68
  69         /* start listening on the configured network interfaces */
  70         status = nbtd_startup_interfaces(nbtsrv, task->lp_ctx, ifaces);
  71         if (!NT_STATUS_IS_OK(status)) {
  72                 task_server_terminate(task, "nbtd failed to setup interfaces", true);
  73                 return status;
  74         }
  75
  76         nbtsrv->sam_ctx = samdb_connect(nbtsrv,
  77                                         task->event_ctx,
  78                                         task->lp_ctx,
  79                                         system_session(task->lp_ctx),
  80                                         NULL,
  81                                         0);
  82         if (nbtsrv->sam_ctx == NULL) {
  83                 task_server_terminate(task, "nbtd failed to open samdb", true);
  84                 return NT_STATUS_UNSUCCESSFUL;
  85         }
  86
  87         /* start the WINS server, if appropriate */
  88         status = nbtd_winsserver_init(nbtsrv);
  89         if (!NT_STATUS_IS_OK(status)) {
  90                 task_server_terminate(task, "nbtd failed to start WINS server", true);
  91                 return status;
  92         }
  93
  94         nbtd_register_irpc(nbtsrv);
  95
  96         /* start the process of registering our names on all interfaces */
  97         nbtd_register_names(nbtsrv);
  98
  99         irpc_add_name(task->msg_ctx, "nbt_server");
 100
 101         return NT_STATUS_OK;
 102 }
 103
 104
 105 /*
 106   register ourselves as a available server
 107 */
 108 NTSTATUS server_service_nbtd_init(TALLOC_CTX *ctx)
 109 {
 110         static const struct service_details details = {
 111                 .inhibit_fork_on_accept = true,
 112                 .inhibit_pre_fork = true,
 113                 .task_init = nbtd_task_init,
 114                 .post_fork = NULL
 115         };
 116         return register_server_service(ctx, "nbt", &details);
 117 }