source4/libcli/dgram/netlogon.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    handling for netlogon 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
  28 /*
  29    send a netlogon mailslot request
  30 */
  31 NTSTATUS dgram_mailslot_netlogon_send(struct nbt_dgram_socket *dgmsock,
  32                                       struct nbt_name *dest_name,
  33                                       struct socket_address *dest,
  34                                       const char *mailslot,
  35                                       struct nbt_name *src_name,
  36                                       struct nbt_netlogon_packet *request)
  37 {
  38         NTSTATUS status;
  39         enum ndr_err_code ndr_err;
  40         DATA_BLOB blob;
  41         TALLOC_CTX *tmp_ctx = talloc_new(dgmsock);
  42
  43         ndr_err = ndr_push_struct_blob(&blob, tmp_ctx,
  44                                        dgmsock->iconv_convenience,
  45                                        request,
  46                                       (ndr_push_flags_fn_t)ndr_push_nbt_netlogon_packet);
  47         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
  48                 talloc_free(tmp_ctx);
  49                 return ndr_map_error2ntstatus(ndr_err);
  50         }
  51
  52
  53         status = dgram_mailslot_send(dgmsock, DGRAM_DIRECT_UNIQUE,
  54                                      mailslot,
  55                                      dest_name, dest,
  56                                      src_name, &blob);
  57         talloc_free(tmp_ctx);
  58         return status;
  59 }
  60
  61
  62 /*
  63    send a netlogon mailslot reply
  64 */
  65 NTSTATUS dgram_mailslot_netlogon_reply(struct nbt_dgram_socket *dgmsock,
  66                                        struct nbt_dgram_packet *request,
  67                                        const char *my_netbios_name,
  68                                        const char *mailslot_name,
  69                                        struct nbt_netlogon_response *reply)
  70 {
  71         NTSTATUS status;
  72         DATA_BLOB blob;
  73         TALLOC_CTX *tmp_ctx = talloc_new(dgmsock);
  74         struct nbt_name myname;
  75         struct socket_address *dest;
  76
  77         status = push_nbt_netlogon_response(&blob, tmp_ctx, dgmsock->iconv_convenience,
  78                                             reply);
  79         if (!NT_STATUS_IS_OK(status)) {
  80                 return status;
  81         }
  82
  83         make_nbt_name_client(&myname, my_netbios_name);
  84
  85         dest = socket_address_from_strings(tmp_ctx, dgmsock->sock->backend_name,
  86                                            request->src_addr, request->src_port);
  87         if (!dest) {
  88                 talloc_free(tmp_ctx);
  89                 return NT_STATUS_NO_MEMORY;
  90         }
  91
  92         status = dgram_mailslot_send(dgmsock, DGRAM_DIRECT_UNIQUE,
  93                                      mailslot_name,
  94                                      &request->data.msg.source_name,
  95                                      dest,
  96                                      &myname, &blob);
  97         talloc_free(tmp_ctx);
  98         return status;
  99 }
 100
 101
 102 /*
 103   parse a netlogon response. The packet must be a valid mailslot packet
 104 */
 105 NTSTATUS dgram_mailslot_netlogon_parse_request(struct dgram_mailslot_handler *dgmslot,
 106                                                TALLOC_CTX *mem_ctx,
 107                                                struct nbt_dgram_packet *dgram,
 108                                                struct nbt_netlogon_packet *netlogon)
 109 {
 110         DATA_BLOB data = dgram_mailslot_data(dgram);
 111         enum ndr_err_code ndr_err;
 112
 113         ndr_err = ndr_pull_struct_blob(&data, mem_ctx, dgmslot->dgmsock->iconv_convenience, netlogon,
 114                                       (ndr_pull_flags_fn_t)ndr_pull_nbt_netlogon_packet);
 115         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 116                 NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
 117                 DEBUG(0,("Failed to parse netlogon packet of length %d: %s\n",
 118                          (int)data.length, nt_errstr(status)));
 119                 if (DEBUGLVL(10)) {
 120                         file_save("netlogon.dat", data.data, data.length);
 121                 }
 122                 return status;
 123         }
 124         return NT_STATUS_OK;
 125 }
 126
 127 /*
 128   parse a netlogon response. The packet must be a valid mailslot packet
 129 */
 130 NTSTATUS dgram_mailslot_netlogon_parse_response(struct dgram_mailslot_handler *dgmslot,
 131                                        TALLOC_CTX *mem_ctx,
 132                                        struct nbt_dgram_packet *dgram,
 133                                        struct nbt_netlogon_response *netlogon)
 134 {
 135         NTSTATUS status;
 136         DATA_BLOB data = dgram_mailslot_data(dgram);
 137
 138         status = pull_nbt_netlogon_response(&data, mem_ctx, dgmslot->dgmsock->iconv_convenience, netlogon);
 139         if (!NT_STATUS_IS_OK(status)) {
 140                 return status;
 141         }
 142
 143         return NT_STATUS_OK;
 144 }
 145