WebSVN – ALCASAR – Diff – /scripts/alcasar-watchdog.sh



#!/bin/bash
# $Id: alcasar-watchdog.sh 2537 2018-04-30 04:07:45Z tom.houdayer $
 
# alcasar-watchdog.sh
# by Rexy
# This script is distributed under the Gnu General Public License (GPL)
# - Ce script prévient les usagers de l'indisponibilité de l'accès Internet

function lan_down_alert ()
# users are redirected on ALCASAR IP address if a LAN problem is detected
{
	case $LAN_DOWN in
	"1")
		logger -t alcasar-watchdog "$EXTIF (WAN card) link down"
		echo "$EXTIF (WAN card) link down"
		/bin/sed -i "s?diagnostic =.*?diagnostic = \"$EXTIF (WAN card) link down\";?g" $Index_Page
		;;
	"2")
		logger -t alcasar-watchdog 'can't contact the default router'
		echo "can't contact the default router"
		/bin/sed -i "s?diagnostic =.*?diagnostic = \"can't contact the default router\";?g" $Index_Page
		;;
	esac
	net_pb=`grep "network_pb = true;" $Index_Page|wc -l`

				if [ -e $current_users_file ]; then
					# We check if user @IP is in 'current_users.txt'
					cmp_user_ok=$(cat $current_users_file | awk -F':' "\$1 == \"$active_ip\" {print \$2}")
					# If not we disconnect this user.
					if [ -z "$cmp_user_ok" ]; then
						logger -t alcasar-watchdog "$active_ip ($active_mac) can't be contact. We disconnects the user ($active_user)."
						/usr/sbin/chilli_query logout $active_mac
					elif [ "$cmp_user_ok" == "TEMP" ]; then
						# Remove the user's IP from 'current_users.txt'. Every user need to insert their @IP everytime to prove their connectivity.
						sed -i "/^$active_ip:$cmp_user_ok\$/d" $current_users_file
					fi
				else # "current_user.txt" does not exists. We disconnect every users.
					logger -t alcasar-watchdog "The file /var/tmp/havp/current_users.txt doen't' exist. We disconnects the user $active_user"
					/usr/sbin/chilli_query logout $active_mac
				fi
			fi
			# IP usurpation test : process only equipment with an authenticated user
			if [[ $(expr $active_session) -eq 1 ]]

				arp_reply=`/usr/sbin/arping -b -I$INTIF -s$PRIVATE_IP -c1 -w4 $active_ip|grep -c "Unicast reply"`
				# disconnect users whose equipement is usurped. For example, if there are 2 same @MAC it will make 2 lines in output.
				if [[ $(expr $arp_reply) -gt 1 ]]
					then 
					echo "[$(date +"%Y-%m-%d %H:%M:%S")] : alcasar-watchdog : $active_ip is usurped ($active_mac). Alcasar disconnect the user ($active_user)." >> /var/Save/security/watchdog.log
					logger -t alcasar-watchdog "$active_ip is usurped ($active_mac). Alcasar disconnect the user ($active_user)."
					/usr/sbin/chilli_query logout $active_mac
					chmod 644 /var/Save/security/watchdog.log
				fi
			fi
		done

Subversion Repositories ALCASAR

(root)/scripts/alcasar-watchdog.sh @ 2682 – Rev 2516 → 2537

Rev 2516		Rev 2537
Line 1...		Line 1...
1	`#!/bin/bash`	1	`#!/bin/bash`
2	`# $Id: alcasar-watchdog.sh 2516 2018-03-17 16:33:45Z rexy $`	2	`# $Id: alcasar-watchdog.sh 2537 2018-04-30 04:07:45Z tom.houdayer $`
3		3
4	`# alcasar-watchdog.sh`	4	`# alcasar-watchdog.sh`
5	`# by Rexy`	5	`# by Rexy`
6	`# This script is distributed under the Gnu General Public License (GPL)`	6	`# This script is distributed under the Gnu General Public License (GPL)`
7	`# - Ce script prévient les usagers de l'indisponibilité de l'accès Internet`	7	`# - Ce script prévient les usagers de l'indisponibilité de l'accès Internet`
Line 30...		Line 30...
30	`function lan_down_alert ()`	30	`function lan_down_alert ()`
31	`# users are redirected on ALCASAR IP address if a LAN problem is detected`	31	`# users are redirected on ALCASAR IP address if a LAN problem is detected`
32	`{`	32	`{`
33	`case $LAN_DOWN in`	33	`case $LAN_DOWN in`
34	`"1")`	34	`"1")`
35	`logger "$EXTIF (WAN card) link down"`	35	`logger -t alcasar-watchdog "$EXTIF (WAN card) link down"`
36	`echo "$EXTIF (WAN card) link down"`	36	`echo "$EXTIF (WAN card) link down"`
37	`/bin/sed -i "s?diagnostic =.*?diagnostic = \"$EXTIF (WAN card) link down\";?g" $Index_Page`	37	`/bin/sed -i "s?diagnostic =.*?diagnostic = \"$EXTIF (WAN card) link down\";?g" $Index_Page`
38	`;;`	38	`;;`
39	`"2")`	39	`"2")`
40	`logger "can't contact the default router"`	40	`logger -t alcasar-watchdog 'can't contact the default router'`
41	`echo "can't contact the default router"`	41	`echo "can't contact the default router"`
42	`/bin/sed -i "s?diagnostic =.*?diagnostic = \"can't contact the default router\";?g" $Index_Page`	42	`/bin/sed -i "s?diagnostic =.*?diagnostic = \"can't contact the default router\";?g" $Index_Page`
43	`;;`	43	`;;`
44	`esac`	44	`esac`
45	net_pb=`grep "network_pb = true;" $Index_Page\|wc -l`	45	net_pb=`grep "network_pb = true;" $Index_Page\|wc -l`
Line 117...		Line 117...
117	`if [ -e $current_users_file ]; then`	117	`if [ -e $current_users_file ]; then`
118	`# We check if user @IP is in 'current_users.txt'`	118	`# We check if user @IP is in 'current_users.txt'`
119	`cmp_user_ok=$(cat $current_users_file \| awk -F':' "\$1 == \"$active_ip\" {print \$2}")`	119	`cmp_user_ok=$(cat $current_users_file \| awk -F':' "\$1 == \"$active_ip\" {print \$2}")`
120	`# If not we disconnect this user.`	120	`# If not we disconnect this user.`
121	`if [ -z "$cmp_user_ok" ]; then`	121	`if [ -z "$cmp_user_ok" ]; then`
122	`logger "alcasar-watchdog : $active_ip ($active_mac) can't be contact. We disconnects the user ($active_user)."`	122	`logger -t alcasar-watchdog "$active_ip ($active_mac) can't be contact. We disconnects the user ($active_user)."`
123	`/usr/sbin/chilli_query logout $active_mac`	123	`/usr/sbin/chilli_query logout $active_mac`
124	`elif [ "$cmp_user_ok" == "TEMP" ]; then`	124	`elif [ "$cmp_user_ok" == "TEMP" ]; then`
125	`# Remove the user's IP from 'current_users.txt'. Every user need to insert their @IP everytime to prove their connectivity.`	125	`# Remove the user's IP from 'current_users.txt'. Every user need to insert their @IP everytime to prove their connectivity.`
126	`sed -i "/^$active_ip:$cmp_user_ok\$/d" $current_users_file`	126	`sed -i "/^$active_ip:$cmp_user_ok\$/d" $current_users_file`
127	`fi`	127	`fi`
128	`else # "current_user.txt" does not exists. We disconnect every users.`	128	`else # "current_user.txt" does not exists. We disconnect every users.`
129	`logger "alcasar-watchdog : The file /var/tmp/havp/current_users.txt doen't' exist. We disconnects the user $active_user"`	129	`logger -t alcasar-watchdog "The file /var/tmp/havp/current_users.txt doen't' exist. We disconnects the user $active_user"`
130	`/usr/sbin/chilli_query logout $active_mac`	130	`/usr/sbin/chilli_query logout $active_mac`
131	`fi`	131	`fi`
132	`fi`	132	`fi`
133	`# IP usurpation test : process only equipment with an authenticated user`	133	`# IP usurpation test : process only equipment with an authenticated user`
134	`if [[ $(expr $active_session) -eq 1 ]]`	134	`if [[ $(expr $active_session) -eq 1 ]]`
Line 136...		Line 136...
136	arp_reply=`/usr/sbin/arping -b -I$INTIF -s$PRIVATE_IP -c1 -w4 $active_ip\|grep -c "Unicast reply"`	136	arp_reply=`/usr/sbin/arping -b -I$INTIF -s$PRIVATE_IP -c1 -w4 $active_ip\|grep -c "Unicast reply"`
137	`# disconnect users whose equipement is usurped. For example, if there are 2 same @MAC it will make 2 lines in output.`	137	`# disconnect users whose equipement is usurped. For example, if there are 2 same @MAC it will make 2 lines in output.`
138	`if [[ $(expr $arp_reply) -gt 1 ]]`	138	`if [[ $(expr $arp_reply) -gt 1 ]]`
139	`then`	139	`then`
140	`echo "[$(date +"%Y-%m-%d %H:%M:%S")] : alcasar-watchdog : $active_ip is usurped ($active_mac). Alcasar disconnect the user ($active_user)." >> /var/Save/security/watchdog.log`	140	`echo "[$(date +"%Y-%m-%d %H:%M:%S")] : alcasar-watchdog : $active_ip is usurped ($active_mac). Alcasar disconnect the user ($active_user)." >> /var/Save/security/watchdog.log`
141	`logger "alcasar-watchdog : $active_ip is usurped ($active_mac). Alcasar disconnect the user ($active_user)."`	141	`logger -t alcasar-watchdog "$active_ip is usurped ($active_mac). Alcasar disconnect the user ($active_user)."`
142	`/usr/sbin/chilli_query logout $active_mac`	142	`/usr/sbin/chilli_query logout $active_mac`
143	`chmod 644 /var/Save/security/watchdog.log`	143	`chmod 644 /var/Save/security/watchdog.log`
144	`fi`	144	`fi`
145	`fi`	145	`fi`
146	`done`	146	`done`