source4/libcli/raw/rawshadow.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    shadow copy file operations
   5
   6    Copyright (C) Andrew Tridgell 2007
   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/raw/libcliraw.h"
  24 #include "libcli/raw/raw_proto.h"
  25 #include "../libcli/smb/smb_constants.h"
  26
  27 /*
  28    get shadow volume data
  29 */
  30 _PUBLIC_ NTSTATUS smb_raw_shadow_data(struct smbcli_tree *tree,
  31                                       TALLOC_CTX *mem_ctx, struct smb_shadow_copy *info)
  32 {
  33         union smb_ioctl nt;
  34         NTSTATUS status;
  35         DATA_BLOB blob;
  36         uint32_t dlength;
  37         int i;
  38         uint32_t ofs;
  39
  40         nt.ntioctl.level        = RAW_IOCTL_NTIOCTL;
  41         nt.ntioctl.in.function  = FSCTL_GET_SHADOW_COPY_DATA;
  42         nt.ntioctl.in.file.fnum = info->in.file.fnum;
  43         nt.ntioctl.in.fsctl     = true;
  44         nt.ntioctl.in.filter    = 0;
  45         nt.ntioctl.in.max_data  = info->in.max_data;
  46         nt.ntioctl.in.blob      = data_blob(NULL, 0);
  47
  48         status = smb_raw_ioctl(tree, mem_ctx, &nt);
  49         if (!NT_STATUS_IS_OK(status)) {
  50                 return status;
  51         }
  52
  53         blob = nt.ntioctl.out.blob;
  54
  55         if (blob.length < 12) {
  56                 return NT_STATUS_INVALID_NETWORK_RESPONSE;
  57         }
  58
  59         info->out.num_volumes = IVAL(blob.data, 0);
  60         info->out.num_names   = IVAL(blob.data, 4);
  61         dlength               = IVAL(blob.data, 8);
  62         if (dlength > blob.length - 12) {
  63                 return NT_STATUS_INVALID_NETWORK_RESPONSE;
  64         }
  65
  66         info->out.names = talloc_array(mem_ctx, const char *, info->out.num_names);
  67         NT_STATUS_HAVE_NO_MEMORY(info->out.names);
  68
  69         ofs = 12;
  70         for (i=0;i<info->out.num_names;i++) {
  71                 size_t len;
  72                 len = smbcli_blob_pull_ucs2(info->out.names,
  73                                       &blob, &info->out.names[i],
  74                                       blob.data+ofs, -1, STR_TERMINATE);
  75                 if (len == 0) {
  76                         return NT_STATUS_INVALID_NETWORK_RESPONSE;
  77                 }
  78                 ofs += len;
  79         }
  80
  81         return status;
  82 }