source4/libcli/dgram/browse.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    handling for browsing dgram requests
   5
   6    Copyright (C) Jelmer Vernooij 2005
   7         Heavily based on ntlogon.c
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 3 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  21 */
  22
  23 #include "includes.h"
  24 #include "libcli/dgram/libdgram.h"
  25 #include "lib/socket/socket.h"
  26 #include "libcli/resolve/resolve.h"
  27 #include "librpc/gen_ndr/ndr_nbt.h"
  28 #include "param/param.h"
  29
  30 NTSTATUS dgram_mailslot_browse_send(struct nbt_dgram_socket *dgmsock,
  31                                     struct nbt_name *dest_name,
  32                                     struct socket_address *dest,
  33                                     struct nbt_name *src_name,
  34                                     struct nbt_browse_packet *request)
  35 {
  36         NTSTATUS status;
  37         DATA_BLOB blob;
  38         TALLOC_CTX *tmp_ctx = talloc_new(dgmsock);
  39
  40         status = ndr_push_struct_blob(&blob, tmp_ctx, request,
  41                                       (ndr_push_flags_fn_t)ndr_push_nbt_browse_packet);
  42         if (!NT_STATUS_IS_OK(status)) {
  43                 talloc_free(tmp_ctx);
  44                 return status;
  45         }
  46
  47         status = dgram_mailslot_send(dgmsock, DGRAM_DIRECT_UNIQUE,
  48                                      NBT_MAILSLOT_BROWSE,
  49                                      dest_name, dest,
  50                                      src_name, &blob);
  51         talloc_free(tmp_ctx);
  52         return status;
  53 }
  54
  55 NTSTATUS dgram_mailslot_browse_reply(struct nbt_dgram_socket *dgmsock,
  56                                      struct nbt_dgram_packet *request,
  57                                      const char *mailslot_name,
  58                                      struct nbt_browse_packet *reply)
  59 {
  60         NTSTATUS status;
  61         DATA_BLOB blob;
  62         TALLOC_CTX *tmp_ctx = talloc_new(dgmsock);
  63         struct nbt_name myname;
  64         struct socket_address *dest;
  65
  66         status = ndr_push_struct_blob(&blob, tmp_ctx, reply,
  67                                       (ndr_push_flags_fn_t)ndr_push_nbt_browse_packet);
  68         if (!NT_STATUS_IS_OK(status)) {
  69                 talloc_free(tmp_ctx);
  70                 return status;
  71         }
  72
  73         make_nbt_name_client(&myname, lp_netbios_name());
  74
  75         dest = socket_address_from_strings(tmp_ctx, dgmsock->sock->backend_name,
  76                                            request->src_addr, request->src_port);
  77         if (!dest) {
  78                 talloc_free(tmp_ctx);
  79                 return NT_STATUS_NO_MEMORY;
  80         }
  81
  82         status = dgram_mailslot_send(dgmsock, DGRAM_DIRECT_UNIQUE,
  83                                      mailslot_name,
  84                                      &request->data.msg.source_name,
  85                                      dest,
  86                                      &myname, &blob);
  87         talloc_free(tmp_ctx);
  88         return status;
  89 }
  90
  91 NTSTATUS dgram_mailslot_browse_parse(struct dgram_mailslot_handler *dgmslot,
  92                                      TALLOC_CTX *mem_ctx,
  93                                      struct nbt_dgram_packet *dgram,
  94                                      struct nbt_browse_packet *pkt)
  95 {
  96         DATA_BLOB data = dgram_mailslot_data(dgram);
  97         NTSTATUS status;
  98
  99         status = ndr_pull_struct_blob(&data, mem_ctx, pkt,
 100                                       (ndr_pull_flags_fn_t)ndr_pull_nbt_browse_packet);
 101         if (!NT_STATUS_IS_OK(status)) {
 102                 DEBUG(0,("Failed to parse browse packet of length %d\n",
 103                          (int)data.length));
 104                 if (DEBUGLVL(10)) {
 105                         file_save("browse.dat", data.data, data.length);
 106                 }
 107         }
 108         return status;
 109 }