source3/smbd/smb2_keepalive.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Core SMB2 server
   4
   5    Copyright (C) Stefan Metzmacher 2009
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 */
  20
  21 #include "includes.h"
  22 #include "smbd/globals.h"
  23 #include "../libcli/smb/smb_common.h"
  24
  25 NTSTATUS smbd_smb2_request_process_keepalive(struct smbd_smb2_request *req)
  26 {
  27         const uint8_t *inbody;
  28         int i = req->current_idx;
  29         DATA_BLOB outbody;
  30         size_t expected_body_size = 0x04;
  31         size_t body_size;
  32
  33         if (req->in.vector[i+1].iov_len != (expected_body_size & 0xFFFFFFFE)) {
  34                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
  35         }
  36
  37         inbody = (const uint8_t *)req->in.vector[i+1].iov_base;
  38
  39         body_size = SVAL(inbody, 0x00);
  40         if (body_size != expected_body_size) {
  41                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
  42         }
  43
  44         /* TODO: update some time stamps */
  45
  46         outbody = data_blob_talloc(req->out.vector, NULL, 0x04);
  47         if (outbody.data == NULL) {
  48                 return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
  49         }
  50
  51         SSVAL(outbody.data, 0x00, 0x04);        /* struct size */
  52         SSVAL(outbody.data, 0x02, 0);           /* reserved */
  53
  54         return smbd_smb2_request_done(req, outbody, NULL);
  55 }