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#!/bin/bash
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#!/bin/bash
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# $Id: alcasar-watchdog.sh 1377 2014-06-10 22:16:50Z richard $
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# $Id: alcasar-watchdog.sh 1469 2014-10-30 21:58:47Z 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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# This script tells users that Internet access is down
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# This script tells users that Internet access is down
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# it logs out users whose
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# it logs out users whose
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# - PCs are quiet
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# - PCs are quiet
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# - MAC address is used by other systems (usurped)
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# - MAC address is used by other systems (usurped)
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EXTIF="enp1s0"
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INTIF="enp2s0"
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conf_file="/usr/local/etc/alcasar.conf"
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CONF_FILE="/usr/local/etc/alcasar.conf"
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EXTIF=`grep ^EXTIF= $CONF_FILE|cut -d"=" -f2` # EXTernal InterFace
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INTIF=`grep ^INTIF= $CONF_FILE|cut -d"=" -f2` # INTernal InterFace
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private_ip_mask=`grep PRIVATE_IP= $conf_file|cut -d"=" -f2`
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private_ip_mask=`grep PRIVATE_IP= $CONF_FILE|cut -d"=" -f2`
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private_ip_mask=${private_ip_mask:=192.168.182.1/24}
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private_ip_mask=${private_ip_mask:=192.168.182.1/24}
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PRIVATE_IP=`echo "$private_ip_mask" |cut -d"/" -f1` # @ip du portail (côté LAN)
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PRIVATE_IP=`echo "$private_ip_mask" |cut -d"/" -f1` # @ip du portail (côté LAN)
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PRIVATE_IP=${PRIVATE_IP:=192.168.182.1}
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PRIVATE_IP=${PRIVATE_IP:=192.168.182.1}
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tmp_file="/tmp/watchdog.txt"
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tmp_file="/tmp/watchdog.txt"
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DIR_WEB="/var/www/html"
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DIR_WEB="/var/www/html"
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function lan_down_alert ()
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function lan_down_alert ()
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# users are redirected on ALCASAR IP address if a LAN problem is detected
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# users are redirected on ALCASAR IP address if a LAN problem is detected
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{
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{
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case $LAN_DOWN in
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case $LAN_DOWN in
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"1")
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"1")
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logger "eth0 link down"
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logger "$EXTIF (WAN card) link down"
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echo "eth0 is down"
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echo "$EXTIF (WAN card) is down"
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/bin/sed -i "s?diagnostic =.*?diagnostic = \"eth0 link down\";?g" $Index_Page
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/bin/sed -i "s?diagnostic =.*?diagnostic = \"$EXTIF (WAN card) link down\";?g" $Index_Page
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;;
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;;
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"2")
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"2")
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logger "can't contact the default router"
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logger "can't contact the default router"
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echo "can't contact the default router"
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echo "can't contact the default router"
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/bin/sed -i "s?diagnostic =.*?diagnostic = \"can't contact the default router\";?g" $Index_Page
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/bin/sed -i "s?diagnostic =.*?diagnostic = \"can't contact the default router\";?g" $Index_Page
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