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#!/bin/bash
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#!/bin/bash
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# $Id: alcasar-watchdog.sh 2376 2017-08-16 18:46:50Z tom.houdayer $
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# $Id: alcasar-watchdog.sh 2394 2017-08-27 13:28:59Z tom.houdayer $
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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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                ;;
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                ;;
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        *)
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        *)
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                lan_test
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                lan_test
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                # We disconnect inactive users (its means that their 'status.php' tab has been closed --> their ip address isn't in $current_users_file)
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                # We disconnect inactive users (its means that their 'status.php' tab has been closed --> their ip address isn't in $current_users_file)
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                # process each equipment known by chilli to check if IP address is usurped (with arping)
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                # process each equipment known by chilli to check if IP address is usurped (with arping)
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                for system in `/usr/sbin/chilli_query list |grep -v "\.0\.0\.0"`
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                for system in `/usr/sbin/chilli_query list | grep -v "0\.0\.0\.0"`
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                do
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                do
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                        active_ip=`echo $system |cut -d" " -f2`
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                        active_ip=`echo $system |cut -d" " -f2`
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                        active_session=`echo $system |cut -d" " -f5`
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                        active_session=`echo $system |cut -d" " -f5`
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                        active_mac=`echo $system | cut -d" " -f1`
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                        active_mac=`echo $system | cut -d" " -f1`
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                        active_user=`echo $system |cut -d" " -f6`
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                        active_user=`echo $system |cut -d" " -f6`
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                        #We disconnect inactive user here :
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                        # We disconnect inactive user here :
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                        #We check if this is not an auth @MAC and if he is still connected
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                        # We check if this is not an auth @MAC and if he is still connected
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                        if [ "$active_user" != "$active_mac" ] && [ $(expr $active_session) -eq 1 ]; then
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                        if [ "$active_user" != "$active_mac" ] && [ $(expr $active_session) -eq 1 ]; then
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                                if [ -e $current_users_file ]; then
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                                if [ -e $current_users_file ]; then
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                                        # We check if user @IP is in 'current_users.txt'
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                                        # We check if user @IP is in 'current_users.txt'
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                                        cmp_user_ok=$(cat $current_users_file | grep "^$active_ip\$" -c)
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                                        cmp_user_ok=$(cat $current_users_file | awk -F':' "\$1 == \"$active_ip\" {print \$2}")
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                                        # If not we disconnect this user.
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                                        # If not we disconnect this user.
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                                        if [ $cmp_user_ok -eq 0 ]; then
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                                        if [ -z "$cmp_user_ok" ]; then
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                                                logger "alcasar-watchdog : $active_ip ($active_mac) can't be contact. We disconnects the user ($active_user)."
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                                                logger "alcasar-watchdog : $active_ip ($active_mac) can't be contact. We disconnects the user ($active_user)."
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                                                /usr/sbin/chilli_query logout $active_mac
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                                                /usr/sbin/chilli_query logout $active_mac
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                                        else
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                                        elif [ "$cmp_user_ok" == "TEMP" ]; then
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                                                # Remove the user's IP from 'current_users.txt'. Every user need to insert their @IP everytime to prove their connectivity.
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                                                # Remove the user's IP from 'current_users.txt'. Every user need to insert their @IP everytime to prove their connectivity.
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                                                sed -i "/^$active_ip\$/d" $current_users_file
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                                                sed -i "/^$active_ip:$cmp_user_ok\$/d" $current_users_file
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                                        fi
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                                        fi
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                                else # "current_user.txt" does not exists. We disconnect every users.
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                                else # "current_user.txt" does not exists. We disconnect every users.
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                                        logger "alcasar-watchdog : The file /var/tmp/havp/current_users.txt doen't' exist. We disconnects the user $active_user"
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                                        logger "alcasar-watchdog : The file /var/tmp/havp/current_users.txt doen't' exist. We disconnects the user $active_user"
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                                        /usr/sbin/chilli_query logout $active_mac
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                                        /usr/sbin/chilli_query logout $active_mac
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                                fi
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                                fi