source/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 2 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, write to the Free Software
  20    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  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
  28 /*
  29    send a ntlogon mailslot request
  30 */
  31 NTSTATUS dgram_mailslot_ntlogon_send(struct nbt_dgram_socket *dgmsock,
  32                                      enum dgram_msg_type msg_type,
  33                                      struct nbt_name *dest_name,
  34                                      struct socket_address *dest,
  35                                      struct nbt_name *src_name,
  36                                      struct nbt_ntlogon_packet *request)
  37 {
  38         NTSTATUS status;
  39         DATA_BLOB blob;
  40         TALLOC_CTX *tmp_ctx = talloc_new(dgmsock);
  41
  42         status = ndr_push_struct_blob(&blob, tmp_ctx, request,
  43                                       (ndr_push_flags_fn_t)ndr_push_nbt_ntlogon_packet);
  44         if (!NT_STATUS_IS_OK(status)) {
  45                 talloc_free(tmp_ctx);
  46                 return status;
  47         }
  48
  49
  50         status = dgram_mailslot_send(dgmsock, msg_type,
  51                                      NBT_MAILSLOT_NTLOGON,
  52                                      dest_name, dest,
  53                                      src_name, &blob);
  54         talloc_free(tmp_ctx);
  55         return status;
  56 }
  57
  58
  59 /*
  60    send a ntlogon mailslot reply
  61 */
  62 NTSTATUS dgram_mailslot_ntlogon_reply(struct nbt_dgram_socket *dgmsock,
  63                                       struct nbt_dgram_packet *request,
  64                                       const char *mailslot_name,
  65                                       struct nbt_ntlogon_packet *reply)
  66 {
  67         NTSTATUS status;
  68         DATA_BLOB blob;
  69         TALLOC_CTX *tmp_ctx = talloc_new(dgmsock);
  70         struct nbt_name myname;
  71         struct socket_address *dest;
  72
  73         status = ndr_push_struct_blob(&blob, tmp_ctx, reply,
  74                                       (ndr_push_flags_fn_t)ndr_push_nbt_ntlogon_packet);
  75         if (!NT_STATUS_IS_OK(status)) {
  76                 talloc_free(tmp_ctx);
  77                 return status;
  78         }
  79
  80         make_nbt_name_client(&myname, lp_netbios_name());
  81
  82         dest = socket_address_from_strings(tmp_ctx,
  83                                            dgmsock->sock->backend_name,
  84                                            request->src_addr, request->src_port);
  85         if (!dest) {
  86                 talloc_free(tmp_ctx);
  87                 return NT_STATUS_NO_MEMORY;
  88         }
  89
  90         status = dgram_mailslot_send(dgmsock, DGRAM_DIRECT_UNIQUE,
  91                                      mailslot_name,
  92                                      &request->data.msg.source_name,
  93                                      dest,
  94                                      &myname, &blob);
  95         talloc_free(tmp_ctx);
  96         return status;
  97 }
  98
  99
 100 /*
 101   parse a ntlogon response. The packet must be a valid mailslot packet
 102 */
 103 NTSTATUS dgram_mailslot_ntlogon_parse(struct dgram_mailslot_handler *dgmslot,
 104                                       TALLOC_CTX *mem_ctx,
 105                                       struct nbt_dgram_packet *dgram,
 106                                       struct nbt_ntlogon_packet *ntlogon)
 107 {
 108         DATA_BLOB data = dgram_mailslot_data(dgram);
 109         NTSTATUS status;
 110
 111         status = ndr_pull_struct_blob(&data, mem_ctx, ntlogon,
 112                                       (ndr_pull_flags_fn_t)ndr_pull_nbt_ntlogon_packet);
 113         if (!NT_STATUS_IS_OK(status)) {
 114                 DEBUG(0,("Failed to parse ntlogon packet of length %d\n",
 115                          (int)data.length));
 116                 if (DEBUGLVL(10)) {
 117                         file_save("ntlogon.dat", data.data, data.length);
 118                 }
 119         }
 120         return status;
 121 }