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 2 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, write to the Free Software
  21    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  22 */
  23
  24 #include "includes.h"
  25 #include "libcli/dgram/libdgram.h"
  26 #include "lib/socket/socket.h"
  27
  28 NTSTATUS dgram_mailslot_browse_send(struct nbt_dgram_socket *dgmsock,
  29                                     struct nbt_name *dest_name,
  30                                     struct socket_address *dest,
  31                                     struct nbt_name *src_name,
  32                                     struct nbt_browse_packet *request)
  33 {
  34         NTSTATUS status;
  35         DATA_BLOB blob;
  36         TALLOC_CTX *tmp_ctx = talloc_new(dgmsock);
  37
  38         status = ndr_push_struct_blob(&blob, tmp_ctx, request,
  39                                       (ndr_push_flags_fn_t)ndr_push_nbt_browse_packet);
  40         if (!NT_STATUS_IS_OK(status)) {
  41                 talloc_free(tmp_ctx);
  42                 return status;
  43         }
  44
  45         status = dgram_mailslot_send(dgmsock, DGRAM_DIRECT_UNIQUE,
  46                                      NBT_MAILSLOT_BROWSE,
  47                                      dest_name, dest,
  48                                      src_name, &blob);
  49         talloc_free(tmp_ctx);
  50         return status;
  51 }
  52
  53 NTSTATUS dgram_mailslot_browse_reply(struct nbt_dgram_socket *dgmsock,
  54                                      struct nbt_dgram_packet *request,
  55                                      const char *mailslot_name,
  56                                      struct nbt_browse_packet *reply)
  57 {
  58         NTSTATUS status;
  59         DATA_BLOB blob;
  60         TALLOC_CTX *tmp_ctx = talloc_new(dgmsock);
  61         struct nbt_name myname;
  62         struct socket_address *dest;
  63
  64         status = ndr_push_struct_blob(&blob, tmp_ctx, reply,
  65                                       (ndr_push_flags_fn_t)ndr_push_nbt_browse_packet);
  66         if (!NT_STATUS_IS_OK(status)) {
  67                 talloc_free(tmp_ctx);
  68                 return status;
  69         }
  70
  71         make_nbt_name_client(&myname, lp_netbios_name());
  72
  73         dest = socket_address_from_strings(tmp_ctx, dgmsock->sock->backend_name,
  74                                            request->src_addr, request->src_port);
  75         if (!dest) {
  76                 talloc_free(tmp_ctx);
  77                 return NT_STATUS_NO_MEMORY;
  78         }
  79
  80         status = dgram_mailslot_send(dgmsock, DGRAM_DIRECT_UNIQUE,
  81                                      mailslot_name,
  82                                      &request->data.msg.source_name,
  83                                      dest,
  84                                      &myname, &blob);
  85         talloc_free(tmp_ctx);
  86         return status;
  87 }
  88
  89 NTSTATUS dgram_mailslot_browse_parse(struct dgram_mailslot_handler *dgmslot,
  90                                      TALLOC_CTX *mem_ctx,
  91                                      struct nbt_dgram_packet *dgram,
  92                                      struct nbt_browse_packet *pkt)
  93 {
  94         DATA_BLOB data = dgram_mailslot_data(dgram);
  95         NTSTATUS status;
  96
  97         status = ndr_pull_struct_blob(&data, mem_ctx, pkt,
  98                                       (ndr_pull_flags_fn_t)ndr_pull_nbt_browse_packet);
  99         if (!NT_STATUS_IS_OK(status)) {
 100                 DEBUG(0,("Failed to parse browse packet of length %d\n",
 101                          (int)data.length));
 102                 if (DEBUGLVL(10)) {
 103                         file_save("browse.dat", data.data, data.length);
 104                 }
 105         }
 106         return status;
 107 }