EvoBSD/roles/nagios-nrpe/files/plugins_bsd/check_pf_states

#!/bin/sh

# Script writen by Evolix

_MAX_STATES_LIMIT=$(/sbin/pfctl -sm | /usr/bin/grep states | awk '{print $4}')
_WARNING_STATES_LIMIT=$((_MAX_STATES_LIMIT*50/100))
_CRTICAL_STATES_LIMIT=$((_MAX_STATES_LIMIT*65/100))

. /usr/local/libexec/nagios/utils.sh

_CHECK_STATES=$(/sbin/pfctl -si | /usr/bin/grep current | awk '{print $3}')

if [ $_CHECK_STATES -lt $_WARNING_STATES_LIMIT ];then
        echo "OK: States number ($_CHECK_STATES) is below threshold (warn : $_WARNING_STATES_LIMIT / crit : $_CRTICAL_STATES_LIMIT / max : $_MAX_STATES_LIMIT)"
        exit "$STATE_OK"
elif [ $_CHECK_STATES -ge $_WARNING_STATES_LIMIT ] && [ $_CHECK_STATES -lt $_CRTICAL_STATES_LIMIT ];then
        echo "WARNING: States number is $_CHECK_STATES (threshold WARNING = $_WARNING_STATES_LIMIT, max = $_MAX_STATES_LIMIT)"
        exit "$STATE_WARNING"
else
        echo "CRITICAL: States number is $_CHECK_STATES (threshold CRITICAL = $_CRTICAL_STATES_LIMIT, max = $_MAX_STATES_LIMIT)"
        exit "$STATE_CRITICAL"
fi