source4/libcli/dgram/ntlogon.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    handling for ntlogon dgram requests
   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 "libcli/dgram/libdgram.h"
  24 #include "lib/socket/socket.h"
  25 #include "libcli/resolve/resolve.h"
  26 #include "librpc/gen_ndr/ndr_nbt.h"
  27 #include "param/param.h"
  28
  29 /*
  30    send a ntlogon mailslot request
  31 */
  32 NTSTATUS dgram_mailslot_ntlogon_send(struct nbt_dgram_socket *dgmsock,
  33                                      enum dgram_msg_type msg_type,
  34                                      struct nbt_name *dest_name,
  35                                      struct socket_address *dest,
  36                                      struct nbt_name *src_name,
  37                                      struct nbt_ntlogon_packet *request)
  38 {
  39         NTSTATUS status;
  40         DATA_BLOB blob;
  41         TALLOC_CTX *tmp_ctx = talloc_new(dgmsock);
  42
  43         status = ndr_push_struct_blob(&blob, tmp_ctx, request,
  44                                       (ndr_push_flags_fn_t)ndr_push_nbt_ntlogon_packet);
  45         if (!NT_STATUS_IS_OK(status)) {
  46                 talloc_free(tmp_ctx);
  47                 return status;
  48         }
  49
  50
  51         status = dgram_mailslot_send(dgmsock, msg_type,
  52                                      NBT_MAILSLOT_NTLOGON,
  53                                      dest_name, dest,
  54                                      src_name, &blob);
  55         talloc_free(tmp_ctx);
  56         return status;
  57 }
  58
  59
  60 /*
  61    send a ntlogon mailslot reply
  62 */
  63 NTSTATUS dgram_mailslot_ntlogon_reply(struct nbt_dgram_socket *dgmsock,
  64                                       struct nbt_dgram_packet *request,
  65                                       const char *mailslot_name,
  66                                       struct nbt_ntlogon_packet *reply)
  67 {
  68         NTSTATUS status;
  69         DATA_BLOB blob;
  70         TALLOC_CTX *tmp_ctx = talloc_new(dgmsock);
  71         struct nbt_name myname;
  72         struct socket_address *dest;
  73
  74         status = ndr_push_struct_blob(&blob, tmp_ctx, reply,
  75                                       (ndr_push_flags_fn_t)ndr_push_nbt_ntlogon_packet);
  76         if (!NT_STATUS_IS_OK(status)) {
  77                 talloc_free(tmp_ctx);
  78                 return status;
  79         }
  80
  81         make_nbt_name_client(&myname, lp_netbios_name());
  82
  83         dest = socket_address_from_strings(tmp_ctx,
  84                                            dgmsock->sock->backend_name,
  85                                            request->src_addr, request->src_port);
  86         if (!dest) {
  87                 talloc_free(tmp_ctx);
  88                 return NT_STATUS_NO_MEMORY;
  89         }
  90
  91         status = dgram_mailslot_send(dgmsock, DGRAM_DIRECT_UNIQUE,
  92                                      mailslot_name,
  93                                      &request->data.msg.source_name,
  94                                      dest,
  95                                      &myname, &blob);
  96         talloc_free(tmp_ctx);
  97         return status;
  98 }
  99
 100
 101 /*
 102   parse a ntlogon response. The packet must be a valid mailslot packet
 103 */
 104 NTSTATUS dgram_mailslot_ntlogon_parse(struct dgram_mailslot_handler *dgmslot,
 105                                       TALLOC_CTX *mem_ctx,
 106                                       struct nbt_dgram_packet *dgram,
 107                                       struct nbt_ntlogon_packet *ntlogon)
 108 {
 109         DATA_BLOB data = dgram_mailslot_data(dgram);
 110         NTSTATUS status;
 111
 112         status = ndr_pull_struct_blob(&data, mem_ctx, ntlogon,
 113                                       (ndr_pull_flags_fn_t)ndr_pull_nbt_ntlogon_packet);
 114         if (!NT_STATUS_IS_OK(status)) {
 115                 DEBUG(0,("Failed to parse ntlogon packet of length %d\n",
 116                          (int)data.length));
 117                 if (DEBUGLVL(10)) {
 118                         file_save("ntlogon.dat", data.data, data.length);
 119                 }
 120         }
 121         return status;
 122 }