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         enum ndr_err_code ndr_err;
  38         DATA_BLOB blob;
  39         TALLOC_CTX *tmp_ctx = talloc_new(dgmsock);
  40
  41         ndr_err = ndr_push_struct_blob(&blob, tmp_ctx, request,
  42                                       (ndr_push_flags_fn_t)ndr_push_nbt_browse_packet);
  43         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
  44                 talloc_free(tmp_ctx);
  45                 return ndr_map_error2ntstatus(ndr_err);
  46         }
  47
  48         status = dgram_mailslot_send(dgmsock, DGRAM_DIRECT_UNIQUE,
  49                                      NBT_MAILSLOT_BROWSE,
  50                                      dest_name, dest,
  51                                      src_name, &blob);
  52         talloc_free(tmp_ctx);
  53         return status;
  54 }
  55
  56 NTSTATUS dgram_mailslot_browse_reply(struct nbt_dgram_socket *dgmsock,
  57                                      struct nbt_dgram_packet *request,
  58                                      const char *mailslot_name,
  59                                      const char *my_netbios_name,
  60                                      struct nbt_browse_packet *reply)
  61 {
  62         NTSTATUS status;
  63         enum ndr_err_code ndr_err;
  64         DATA_BLOB blob;
  65         TALLOC_CTX *tmp_ctx = talloc_new(dgmsock);
  66         struct nbt_name myname;
  67         struct socket_address *dest;
  68
  69         ndr_err = ndr_push_struct_blob(&blob, tmp_ctx, reply,
  70                                       (ndr_push_flags_fn_t)ndr_push_nbt_browse_packet);
  71         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
  72                 talloc_free(tmp_ctx);
  73                 return ndr_map_error2ntstatus(ndr_err);
  74         }
  75
  76         make_nbt_name_client(&myname, my_netbios_name);
  77
  78         dest = socket_address_from_strings(tmp_ctx, dgmsock->sock->backend_name,
  79                                            request->src_addr, request->src_port);
  80         if (!dest) {
  81                 talloc_free(tmp_ctx);
  82                 return NT_STATUS_NO_MEMORY;
  83         }
  84
  85         status = dgram_mailslot_send(dgmsock, DGRAM_DIRECT_UNIQUE,
  86                                      mailslot_name,
  87                                      &request->data.msg.source_name,
  88                                      dest,
  89                                      &myname, &blob);
  90         talloc_free(tmp_ctx);
  91         return status;
  92 }
  93
  94 NTSTATUS dgram_mailslot_browse_parse(struct dgram_mailslot_handler *dgmslot,
  95                                      TALLOC_CTX *mem_ctx,
  96                                      struct nbt_dgram_packet *dgram,
  97                                      struct nbt_browse_packet *pkt)
  98 {
  99         DATA_BLOB data = dgram_mailslot_data(dgram);
 100         enum ndr_err_code ndr_err;
 101
 102         ndr_err = ndr_pull_struct_blob(&data, mem_ctx, pkt,
 103                                       (ndr_pull_flags_fn_t)ndr_pull_nbt_browse_packet);
 104         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 105                 NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
 106                 DEBUG(0,("Failed to parse browse packet of length %d: %s\n",
 107                          (int)data.length, nt_errstr(status)));
 108                 if (DEBUGLVL(10)) {
 109                         file_save("browse.dat", data.data, data.length);
 110                 }
 111                 return status;
 112         }
 113         return NT_STATUS_OK;
 114 }