/*

 *

 * (C) 2013-24 - ntop.org

 *

 *

 * 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, write to the Free Software Foundation,

 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

 *

 */

#include "ntop_includes.h"

#include "flow_checks_includes.h"

void TCPZeroWindow::checkTCPWindow(Flow* f) {

  if (f->isTCPZeroWindow() && !f->getInterface()->isSampledTraffic()) {

    FlowAlertType alert_type = TCPZeroWindowAlert::getClassType();

    u_int8_t c_score, s_score;

    risk_percentage cli_score_pctg = CLIENT_HIGH_RISK_PERCENTAGE;

    computeCliSrvScore(ntop->getFlowAlertScore(alert_type.id), cli_score_pctg,

                       &c_score, &s_score);

    FlowAlert* alert = buildAlert(f);

    alert->setCliSrvScores(c_score, s_score);

    f->triggerAlert(alert);

  }

}

/* ***************************************************** */

void TCPZeroWindow::periodicUpdate(Flow* f) { checkTCPWindow(f); }

/* ***************************************************** */

void TCPZeroWindow::flowEnd(Flow* f) { checkTCPWindow(f); }

/* ***************************************************** */

FlowAlert* TCPZeroWindow::buildAlert(Flow* f) {

  return new TCPZeroWindowAlert(this, f);

}

/* ***************************************************** */