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         enum ndr_err_code ndr_err;
  41         DATA_BLOB blob;
  42         TALLOC_CTX *tmp_ctx = talloc_new(dgmsock);
  43
  44         ndr_err = ndr_push_struct_blob(&blob, tmp_ctx, request,
  45                                       (ndr_push_flags_fn_t)ndr_push_nbt_ntlogon_packet);
  46         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
  47                 talloc_free(tmp_ctx);
  48                 return ndr_map_error2ntstatus(ndr_err);
  49         }
  50
  51
  52         status = dgram_mailslot_send(dgmsock, msg_type,
  53                                      NBT_MAILSLOT_NTLOGON,
  54                                      dest_name, dest,
  55                                      src_name, &blob);
  56         talloc_free(tmp_ctx);
  57         return status;
  58 }
  59
  60
  61 /*
  62    send a ntlogon mailslot reply
  63 */
  64 NTSTATUS dgram_mailslot_ntlogon_reply(struct nbt_dgram_socket *dgmsock,
  65                                       struct nbt_dgram_packet *request,
  66                                       const char *mailslot_name,
  67                                       struct nbt_ntlogon_packet *reply)
  68 {
  69         NTSTATUS status;
  70         enum ndr_err_code ndr_err;
  71         DATA_BLOB blob;
  72         TALLOC_CTX *tmp_ctx = talloc_new(dgmsock);
  73         struct nbt_name myname;
  74         struct socket_address *dest;
  75
  76         ndr_err = ndr_push_struct_blob(&blob, tmp_ctx, reply,
  77                                       (ndr_push_flags_fn_t)ndr_push_nbt_ntlogon_packet);
  78         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
  79                 talloc_free(tmp_ctx);
  80                 return ndr_map_error2ntstatus(ndr_err);
  81         }
  82
  83         make_nbt_name_client(&myname, lp_netbios_name(global_loadparm));
  84
  85         dest = socket_address_from_strings(tmp_ctx,
  86                                            dgmsock->sock->backend_name,
  87                                            request->src_addr, request->src_port);
  88         if (!dest) {
  89                 talloc_free(tmp_ctx);
  90                 return NT_STATUS_NO_MEMORY;
  91         }
  92
  93         status = dgram_mailslot_send(dgmsock, DGRAM_DIRECT_UNIQUE,
  94                                      mailslot_name,
  95                                      &request->data.msg.source_name,
  96                                      dest,
  97                                      &myname, &blob);
  98         talloc_free(tmp_ctx);
  99         return status;
 100 }
 101
 102
 103 /*
 104   parse a ntlogon response. The packet must be a valid mailslot packet
 105 */
 106 NTSTATUS dgram_mailslot_ntlogon_parse(struct dgram_mailslot_handler *dgmslot,
 107                                       TALLOC_CTX *mem_ctx,
 108                                       struct nbt_dgram_packet *dgram,
 109                                       struct nbt_ntlogon_packet *ntlogon)
 110 {
 111         DATA_BLOB data = dgram_mailslot_data(dgram);
 112         enum ndr_err_code ndr_err;
 113
 114         ndr_err = ndr_pull_struct_blob(&data, mem_ctx, ntlogon,
 115                                       (ndr_pull_flags_fn_t)ndr_pull_nbt_ntlogon_packet);
 116         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 117                 NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
 118                 DEBUG(0,("Failed to parse ntlogon packet of length %d: %s\n",
 119                          (int)data.length, nt_errstr(status)));
 120                 if (DEBUGLVL(10)) {
 121                         file_save("ntlogon.dat", data.data, data.length);
 122                 }
 123                 return status;
 124         }
 125         return NT_STATUS_OK;
 126 }