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                                          struct smb2_session *session)
  31 {
  32         struct smb2_request *req;
  33
  34         req = smb2_request_init(transport, SMB2_OP_KEEPALIVE, 0x04, false, 0);
  35         if (req == NULL) return NULL;
  36
  37         SSVAL(req->out.body, 0x02, 0);
  38
  39         req->session = session;
  40
  41         smb2_transport_send(req);
  42
  43         return req;
  44 }
  45
  46
  47 /*
  48   recv a keepalive reply
  49 */
  50 NTSTATUS smb2_keepalive_recv(struct smb2_request *req)
  51 {
  52         if (!smb2_request_receive(req) ||
  53             !smb2_request_is_ok(req)) {
  54                 return smb2_request_destroy(req);
  55         }
  56
  57         SMB2_CHECK_PACKET_RECV(req, 0x04, false);
  58         return smb2_request_destroy(req);
  59 }
  60
  61 /*
  62   sync keepalive request
  63 */
  64 NTSTATUS smb2_keepalive(struct smb2_transport *transport)
  65 {
  66         struct smb2_request *req = smb2_keepalive_send(transport, NULL);
  67         return smb2_keepalive_recv(req);
  68 }