source: vendor/3.5.8/source3/smbd/smb2_keepalive.c

/*
   Unix SMB/CIFS implementation.
   Core SMB2 server

   Copyright (C) Stefan Metzmacher 2009

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#include "includes.h"
#include "smbd/globals.h"
#include "../libcli/smb/smb_common.h"

NTSTATUS smbd_smb2_request_process_keepalive(struct smbd_smb2_request *req)
{
        const uint8_t *inbody;
        int i = req->current_idx;
        DATA_BLOB outbody;
        size_t expected_body_size = 0x04;
        size_t body_size;

        if (req->in.vector[i+1].iov_len != (expected_body_size & 0xFFFFFFFE)) {
                return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
        }

        inbody = (const uint8_t *)req->in.vector[i+1].iov_base;

        body_size = SVAL(inbody, 0x00);
        if (body_size != expected_body_size) {
                return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
        }

        /* TODO: update some time stamps */

        outbody = data_blob_talloc(req->out.vector, NULL, 0x04);
        if (outbody.data == NULL) {
                return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
        }

        SSVAL(outbody.data, 0x00, 0x04);        /* struct size */
        SSVAL(outbody.data, 0x02, 0);           /* reserved */

        return smbd_smb2_request_done(req, outbody, NULL);
}