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 #include "nbt_server/dgram/proto.h"
  27
  28 static const char *nbt_browse_opcode_string(enum nbt_browse_opcode r)
  29 {
  30         const char *val = NULL;
  31
  32         switch (r) {
  33                 case HostAnnouncement: val = "HostAnnouncement"; break;
  34                 case AnnouncementRequest: val = "AnnouncementRequest"; break;
  35                 case Election: val = "Election"; break;
  36                 case GetBackupListReq: val = "GetBackupListReq"; break;
  37                 case GetBackupListResp: val = "GetBackupListResp"; break;
  38                 case BecomeBackup: val = "BecomeBackup"; break;
  39                 case DomainAnnouncement: val = "DomainAnnouncement"; break;
  40                 case MasterAnnouncement: val = "MasterAnnouncement"; break;
  41                 case ResetBrowserState: val = "ResetBrowserState"; break;
  42                 case LocalMasterAnnouncement: val = "LocalMasterAnnouncement"; break;
  43         }
  44
  45         return val;
  46 }
  47
  48 /*
  49   handle incoming browse mailslot requests
  50 */
  51 void nbtd_mailslot_browse_handler(struct dgram_mailslot_handler *dgmslot,
  52                                   struct nbt_dgram_packet *packet,
  53                                   struct socket_address *src)
  54 {
  55         struct nbt_browse_packet *browse = talloc(dgmslot, struct nbt_browse_packet);
  56         struct nbt_name *name = &packet->data.msg.dest_name;
  57         NTSTATUS status;
  58
  59         if (browse == NULL) {
  60                 status = NT_STATUS_INVALID_PARAMETER;
  61                 goto failed;
  62         }
  63
  64         status = dgram_mailslot_browse_parse(dgmslot, browse, packet, browse);
  65         if (!NT_STATUS_IS_OK(status)) goto failed;
  66
  67         DEBUG(4,("Browse %s (Op %d) on '%s' '%s' from %s:%d\n",
  68                 nbt_browse_opcode_string(browse->opcode), browse->opcode,
  69                 nbt_name_string(browse, name), dgmslot->mailslot_name,
  70                 src->addr, src->port));
  71
  72         if (DEBUGLEVEL >= 10) {
  73                 NDR_PRINT_DEBUG(nbt_browse_packet, browse);
  74         }
  75
  76         talloc_free(browse);
  77         return;
  78
  79 failed:
  80         DEBUG(2,("nbtd browse handler failed from %s:%d to %s - %s\n",
  81                  src->addr, src->port, nbt_name_string(browse, name),
  82                  nt_errstr(status)));
  83         talloc_free(browse);
  84
  85 }