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https://github.com/Security-Onion-Solutions/securityonion.git
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49 lines
1.5 KiB
Bash
49 lines
1.5 KiB
Bash
#!/bin/bash
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#
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# Copyright 2014-2022 Security Onion Solutions, LLC
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# if this script isn't already running
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if [[ ! "`pidof -x $(basename $0) -o %PPID`" ]]; then
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SURILOG=$(tac /var/log/suricata/stats.log | grep kernel | head -4)
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CHECKIT=$(echo $SURILOG | grep -o 'drop' | wc -l)
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if [ $CHECKIT == 2 ]; then
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declare RESULT=($SURILOG)
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CURRENTDROP=${RESULT[4]}
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PASTDROP=${RESULT[14]}
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DROPPED=$((CURRENTDROP - PASTDROP))
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if [ $DROPPED == 0 ]; then
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LOSS=0
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echo "suridrop drop=0"
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else
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CURRENTPACKETS=${RESULT[9]}
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PASTPACKETS=${RESULT[19]}
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TOTALCURRENT=$((CURRENTPACKETS + CURRENTDROP))
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TOTALPAST=$((PASTPACKETS + PASTDROP))
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TOTAL=$((TOTALCURRENT - TOTALPAST))
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LOSS=$(echo 4 k $DROPPED $TOTAL / p | dc)
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echo "suridrop drop=$LOSS"
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fi
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fi
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fi
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exit 0
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