source4/nbt_server/dgram/browse.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    NBT datagram browse server
   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 "nbt_server/nbt_server.h"
  24 #include "lib/socket/socket.h"
  25 #include "librpc/gen_ndr/ndr_nbt.h"
  26
  27 static const char *nbt_browse_opcode_string(enum nbt_browse_opcode r)
  28 {
  29         const char *val = NULL;
  30
  31         switch (r) {
  32                 case HostAnnouncement: val = "HostAnnouncement"; break;
  33                 case AnnouncementRequest: val = "AnnouncementRequest"; break;
  34                 case Election: val = "Election"; break;
  35                 case GetBackupListReq: val = "GetBackupListReq"; break;
  36                 case GetBackupListResp: val = "GetBackupListResp"; break;
  37                 case BecomeBackup: val = "BecomeBackup"; break;
  38                 case DomainAnnouncement: val = "DomainAnnouncement"; break;
  39                 case MasterAnnouncement: val = "MasterAnnouncement"; break;
  40                 case ResetBrowserState: val = "ResetBrowserState"; break;
  41                 case LocalMasterAnnouncement: val = "LocalMasterAnnouncement"; break;
  42         }
  43
  44         return val;
  45 }
  46
  47 /*
  48   handle incoming browse mailslot requests
  49 */
  50 void nbtd_mailslot_browse_handler(struct dgram_mailslot_handler *dgmslot,
  51                                   struct nbt_dgram_packet *packet,
  52                                   struct socket_address *src)
  53 {
  54         struct nbt_browse_packet *browse = talloc(dgmslot, struct nbt_browse_packet);
  55         struct nbt_name *name = &packet->data.msg.dest_name;
  56         NTSTATUS status;
  57
  58         if (browse == NULL) {
  59                 status = NT_STATUS_INVALID_PARAMETER;
  60                 goto failed;
  61         }
  62
  63         status = dgram_mailslot_browse_parse(dgmslot, browse, packet, browse);
  64         if (!NT_STATUS_IS_OK(status)) goto failed;
  65
  66         DEBUG(2,("Browse %s (Op %d) on '%s' '%s' from %s:%d\n",
  67                 nbt_browse_opcode_string(browse->opcode), browse->opcode,
  68                 nbt_name_string(browse, name), dgmslot->mailslot_name,
  69                 src->addr, src->port));
  70
  71         if (DEBUGLEVEL >= 10) {
  72                 NDR_PRINT_DEBUG(nbt_browse_packet, browse);
  73         }
  74
  75         talloc_free(browse);
  76         return;
  77
  78 failed:
  79         DEBUG(2,("nbtd browse handler failed from %s:%d to %s - %s\n",
  80                  src->addr, src->port, nbt_name_string(browse, name),
  81                  nt_errstr(status)));
  82         talloc_free(browse);
  83
  84 }