source4/libcli/smb2/keepalive.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    SMB2 client keepalive handling
   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/smb2/smb2.h"
  24 #include "libcli/smb2/smb2_calls.h"
  25
  26 /*
  27   send a keepalive request
  28 */
  29 struct smb2_request *smb2_keepalive_send(struct smb2_transport *transport)
  30 {
  31         struct smb2_request *req;
  32
  33         req = smb2_request_init(transport, SMB2_OP_KEEPALIVE, 0x04, false, 0);
  34         if (req == NULL) return NULL;
  35
  36         SSVAL(req->out.body, 0x02, 0);
  37
  38         smb2_transport_send(req);
  39
  40         return req;
  41 }
  42
  43
  44 /*
  45   recv a keepalive reply
  46 */
  47 NTSTATUS smb2_keepalive_recv(struct smb2_request *req)
  48 {
  49         if (!smb2_request_receive(req) ||
  50             !smb2_request_is_ok(req)) {
  51                 return smb2_request_destroy(req);
  52         }
  53
  54         SMB2_CHECK_PACKET_RECV(req, 0x04, false);
  55         return smb2_request_destroy(req);
  56 }
  57
  58 /*
  59   sync keepalive request
  60 */
  61 NTSTATUS smb2_keepalive(struct smb2_transport *transport)
  62 {
  63         struct smb2_request *req = smb2_keepalive_send(transport);
  64         return smb2_keepalive_recv(req);
  65 }