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#!/bin/bash
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#!/bin/bash
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# $Id: alcasar-watchdog.sh 1535 2014-12-21 22:14:47Z richard $
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# $Id: alcasar-watchdog.sh 1688 2015-08-27 21:48:57Z richard $
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# alcasar-watchdog.sh
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# alcasar-watchdog.sh
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# by Rexy
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# by Rexy
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# This script is distributed under the Gnu General Public License (GPL)
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# This script is distributed under the Gnu General Public License (GPL)
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# Ce script prévient les usagers de l'indisponibilité de l'accès Internet
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# Ce script prévient les usagers de l'indisponibilité de l'accès Internet
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arp_reply=`/usr/sbin/arping -b -I$INTIF -s$PRIVATE_IP -c1 -w4 $noresponse_ip|grep "Unicast reply"|wc -l`
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arp_reply=`/usr/sbin/arping -b -I$INTIF -s$PRIVATE_IP -c1 -w4 $noresponse_ip|grep "Unicast reply"|wc -l`
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if [[ $(expr $arp_reply) -eq 0 ]]
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if [[ $(expr $arp_reply) -eq 0 ]]
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then
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then
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logger "alcasar-watchdog $noresponse_ip ($noresponse_mac) can't be contact. Alcasar disconnects the user ($noresponse_user)."
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logger "alcasar-watchdog $noresponse_ip ($noresponse_mac) can't be contact. Alcasar disconnects the user ($noresponse_user)."
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/usr/sbin/chilli_query logout $noresponse_mac
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/usr/sbin/chilli_query logout $noresponse_mac
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if [[ $noresponse_user == $noresponse_mac ]] # for @mac auth equipments, we must remove the arp entry
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/usr/sbin/chilli_query dhcp-release $noresponse_mac # release dhcp for mac_auth equipment
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then /usr/sbin/chilli_query dhcp-release $noresponse_mac
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fi
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fi
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fi
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done
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done
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rm $tmp_file
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rm $tmp_file
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fi
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fi
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# process each equipment known by chilli
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# process each equipment known by chilli
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then
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then
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arp_reply=`/usr/sbin/arping -b -I$INTIF -s$PRIVATE_IP -c2 -w4 $active_ip|grep "Unicast reply"|wc -l`
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arp_reply=`/usr/sbin/arping -b -I$INTIF -s$PRIVATE_IP -c2 -w4 $active_ip|grep "Unicast reply"|wc -l`
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# store @IP of quiet equipments
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# store @IP of quiet equipments
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if [[ $(expr $arp_reply) -eq 0 ]]
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if [[ $(expr $arp_reply) -eq 0 ]]
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then
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then
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PTN='^[[:xdigit:]][[:xdigit:]]-[[:xdigit:]][[:xdigit:]]-[[:xdigit:]][[:xdigit:]]-[[:xdigit:]][[:xdigit:]]-[[:xdigit:]][[:xdigit:]]-[[:xdigit:]][[:xdigit:]]$'
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if [[ $(expr $active_user : $PTN) -eq 0 ]] # don't process @mac auth equipments
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then
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echo "$active_ip $active_mac $active_user" >> $tmp_file
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echo "$active_ip $active_mac $active_user" >> $tmp_file
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fi
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fi
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fi
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# disconnect users whose equipement is usurped (@MAC)
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# disconnect users whose equipement is usurped (@MAC)
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if [[ $(expr $arp_reply) -gt 2 ]]
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if [[ $(expr $arp_reply) -gt 2 ]]
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then
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then
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echo "$(date "+[%x-%X] : ")alcasar-watchdog : $active_ip is usurped ($active_mac). Alcasar disconnect the user ($active_user)." >> /var/Save/security/watchdog.log
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echo "$(date "+[%x-%X] : ")alcasar-watchdog : $active_ip is usurped ($active_mac). Alcasar disconnect the user ($active_user)." >> /var/Save/security/watchdog.log
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