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#/bin/bash
# $Id: alcasar-conf.sh 1501 2014-11-27 17:57:17Z franck $
# alcasar-conf.sh
# by REXY
# This script is distributed under the Gnu General Public License (GPL)
# Ce script permet la mise à jour ALCASAR
# - création de l'archive des fichiers de configuration (/tmp/alcasar-conf.tar.gz)
# - chargement d'une archive (lors de la mise à jour d'un alcasar)
# - application des directives du fichier de conf central "/usr/local/etc/alcasar.conf" (lors d'un changement de conf à chaud)
# This script allows ALCASAR update
# - create the configuration files backup (/tmp/alcasar-conf.tar.gz)
# - load the bachup of configuration files (during the update process)
# - apply ALCASAR central configuration file "/usr/local/etc/alcasar.conf" (when hot modification are needed)
new="$(date +%G%m%d-%Hh%M)" # date et heure des fichiers
fichier="alcasar-conf-$new.tar.gz" # nom du fichier de sauvegarde
DIR_UPDATE="/tmp/conf" # répertoire de stockage des fichier de conf pour une mise à jour
DIR_WEB="/var/www/html" # répertoire du centre de gestion
DIR_BIN="/usr/local/bin" # répertoire des scripts d'admin
DIR_SBIN="/usr/local/sbin" # répertoire des scripts d'admin
DIR_ETC="/usr/local/etc" # répertoire des fichiers de conf
DIR_SAVE="/var/Save/system_backup" # répertoire de sauvegarde
CONF_FILE="$DIR_ETC/alcasar.conf" # main alcasar conf file
VERSION="/var/www/html/VERSION" # contient la version en cours
EXTIF=`grep ^EXTIF= $CONF_FILE|cut -d"=" -f2` # EXTernal InterFace
INTIF=`grep ^INTIF= $CONF_FILE|cut -d"=" -f2` # INTernal InterFace
HOSTNAME="alcasar"
DB_USER="radius"
radiuspwd=""
SED="/bin/sed -i"
RUNNING_VERSION=`cat $VERSION|cut -d" " -f1`
MAJ_RUNNING_VERSION=`echo $RUNNING_VERSION|cut -d"." -f1`
MIN_RUNNING_VERSION=`echo $RUNNING_VERSION|cut -d"." -f2|cut -c1`
UPD_RUNNING_VERSION=`echo $RUNNING_VERSION|cut -d"." -f3`
DOMAIN=`grep DOMAIN $CONF_FILE|cut -d"=" -f2` 2>/dev/null # Error if (Version < 2.2) (no conf file)
DOMAIN=${DOMAIN:=localdomain}
DATE=`date '+%d %B %Y - %Hh%M'`
private_network_calc ()
{
PRIVATE_PREFIX=`/bin/ipcalc -p $PRIVATE_IP $PRIVATE_NETMASK |cut -d"=" -f2` # prefixe du réseau (ex. 24)
PRIVATE_NETWORK=`/bin/ipcalc -n $PRIVATE_IP $PRIVATE_NETMASK| cut -d"=" -f2` # @ réseau de consultation (ex.: 192.168.182.0)
PRIVATE_NETWORK_MASK=$PRIVATE_NETWORK/$PRIVATE_PREFIX # @ + masque du réseau de consult (192.168.182.0/24)
classe=$((PRIVATE_PREFIX/8)); classe_sup=`expr $classe + 1`; classe_sup_sup=`expr $classe + 2` # classes de réseau (ex.: 2=classe B, 3=classe C)
PRIVATE_NETWORK_SHORT=`echo $PRIVATE_NETWORK | cut -d"." -f1-$classe`. # @ compatible hosts.allow et hosts.deny (ex.: 192.168.182.)
PRIVATE_BROADCAST=`/bin/ipcalc -b $PRIVATE_NETWORK_MASK | cut -d"=" -f2` # private network broadcast (ie.: 192.168.182.255)
private_network_ending=`echo $PRIVATE_NETWORK | cut -d"." -f$classe_sup` # last octet of LAN address
private_broadcast_ending=`echo $PRIVATE_BROADCAST | cut -d"." -f$classe_sup` # last octet of LAN broadcast
PRIVATE_FIRST_IP=`echo $PRIVATE_NETWORK | cut -d"." -f1-3`"."`expr $private_network_ending + 1` # First network address (ex.: 192.168.182.1)
PRIVATE_SECOND_IP=`echo $PRIVATE_NETWORK | cut -d"." -f1-3`"."`expr $private_network_ending + 2` # second network address (ex.: 192.168.182.2)
PRIVATE_LAST_IP=`echo $PRIVATE_BROADCAST | cut -d"." -f1-3`"."`expr $private_broadcast_ending - 1` # last network address (ex.: 192.168.182.254)
PRIVATE_MAC=`/sbin/ip link show $INTIF | grep ether | cut -d" " -f6` # MAC address of INTIF
}
usage="Usage: alcasar-conf.sh {--create or -create} | {--load or -load} | {--apply or -apply}"
nb_args=$#
args=$1
if [ $nb_args -eq 0 ]
then
nb_args=1
args="-h"
fi
case $args in
-\? | -h* | --h*)
echo "$usage"
exit 0
;;
--create|-create)
[ -d $DIR_UPDATE ] && rm -rf $DIR_UPDATE
mkdir $DIR_UPDATE
# Sauvegarde de la base des usagers
$DIR_SBIN/alcasar-mysql.sh -dump
cp /var/Save/base/`ls /var/Save/base|tail -1` $DIR_UPDATE
# Sauvegarde du logo
cp -f $DIR_WEB/images/organisme.png $DIR_UPDATE
# Sauvegarde des fichiers exploités par dansguardian
cp -f /etc/dansguardian/lists/exceptioniplist $DIR_UPDATE
cp -f /etc/dansguardian/lists/urlregexplist $DIR_UPDATE
cp -f /etc/dansguardian/lists/exceptionsitelist $DIR_UPDATE
cp -f /etc/dansguardian/lists/bannedsitelist $DIR_UPDATE
cp -f /etc/dansguardian/lists/exceptionurllist $DIR_UPDATE
cp -f /etc/dansguardian/lists/bannedurllist $DIR_UPDATE
cp -rf /etc/dansguardian/lists/blacklists/ossi $DIR_UPDATE
# sauvegarde des fichiers : de conf, de filtrage, d'exception, digest, etc.
mkdir $DIR_UPDATE/etc/
cp -rf $DIR_ETC/* $DIR_UPDATE/etc/
# particularité des versions
# si version <= 2.8
if [ $MAJ_RUNNING_VERSION -lt 2 ] || ([ $MAJ_RUNNING_VERSION -eq 2 ] && [ $MIN_RUNNING_VERSION -lt 8 ])
then
$SED "s?alcasar?alcasar.$DOMAIN?g" $DIR_UPDATE/etc/digest/* # add the domainname to the hostname
else
# si version > 2.8 : sauvegarde des certificats (serveur et CA)
cert_date=`/usr/bin/openssl x509 -noout -in /etc/pki/tls/certs/alcasar.crt -dates|grep After|cut -d"=" -f2`
cp -f /etc/pki/tls/certs/alcasar.crt $DIR_UPDATE
cp -f /etc/pki/tls/private/alcasar.key $DIR_UPDATE
cp -f /etc/pki/CA/alcasar-ca.crt $DIR_UPDATE
cp -f /etc/pki/CA/private/alcasar-ca.key $DIR_UPDATE
if [ -e /etc/pki/tls/certs/server-chain.crt ]; then
cp -f /etc/pki/tls/certs/server-chain.crt $DIR_UPDATE
else
cp -f /etc/pki/tls/certs/alcasar.crt $DIR_UPDATE/server-chain.crt
fi
fi
# Changes since V2.6
# SSH_ADMIN_FROM is redefined
$SED "s?^Admin_from_IP=.*?SSH_ADMIN_FROM=0.0.0.0/0.0.0.0?" $CONF_FILE
# macallowed is replaced with macauth
rm -f $DIR_UPDATE/etc/alcasar-macallowed
# DHCP mode can be "off/half/full"
DHCP_mode=`cat $CONF_FILE|grep DHCP=|cut -d"=" -f2`
if [ $DHCP_mode = "on" ]; then
$SED "s?^DHCP=on.*?DHCP=full?" $CONF_FILE # DHCP option can be "off/half/full" since V2.6
fi
# The option 'EXT_LAN_FILTERING' is deleted
$SED "/^EXT_LAN/d" $CONF_FILE
# The category "ip" no longer exist
$SED "/\/ip\/urls/d" $DIR_UPDATE/bannedurllist; $SED "/\/ip\/domains/d" $DIR_UPDATE/bannedsitelist
$SED "/blacklists\/ip/d" $DIR_UPDATE/etc/alcasar-bl-categories; $SED "/^ip/d" $DIR_UPDATE/etc/alcasar-bl-categories-enabled
# BL and WL are now dynamically built in "/usr/local/share"
rm -rf $DIR_UPDATE/etc/alcasar-dnsfilter-enabled $DIR_UPDATE/etc/alcasar-dnsfilter-available
# Bing et Youtube are addes to the safesearching system
Bing=`grep bing $DIR_UPDATE/urlregexplist | wc -l`
if [ $Bing -ne "1" ]; then
SafeSearch=`grep ^\"\(\^http\:\/\/ $DIR_UPDATE/urlregexplist | wc -l`
if [ $SafeSearch -eq "0" ]; then
cat <<EOF >> $DIR_UPDATE/urlregexplist
# Bing - add 'adlt=strict'
#"(^http://[0-9a-z]+\.bing\.[a-z]+[-/%.0-9a-z]*\?)(.*)"->"\1\2&adlt=strict"
# Youtube - add 'edufilter=your_ID'
#"(^http://[0-9a-z]+\.youtube\.[a-z]+[-/%.0-9a-z]*\?)(.*)"->"\1\2&edufilter=ABCD1234567890abcdef"
EOF
else
cat <<EOF >> $DIR_UPDATE/urlregexplist
# Bing - add 'adlt=strict'
"(^http://[0-9a-z]+\.bing\.[a-z]+[-/%.0-9a-z]*\?)(.*)"->"\1\2&adlt=strict"
# Youtube - add 'edufilter=your_ID'
"(^http://[0-9a-z]+\.youtube\.[a-z]+[-/%.0-9a-z]*\?)(.*)"->"\1\2&edufilter=ABCD1234567890abcdef"
EOF
fi
fi
# la variable YOUTUBE_ID est déclarée dans le fichier de conf
YOUTUBE_ID=`grep ^YOUTUBE_ID $CONF_FILE | cut -d"=" -f2`
YOUTUBE_ID=${YOUTUBE_ID:="-1"}
if [ $YOUTUBE_ID = "-1" ]; then
echo "YOUTUBE_ID=ABCD1234567890abcdef" >> $CONF_FILE
fi
# la variable de l'enregistrement SMS est déclarée dans le fichier de conf (Off par défaut)
echo "SMS_REGISTRATION=off" >> $CONF_FILE
# copie du fichier de config de dnsmasq
cp /etc/sysconfig/dnsmasq $DIR_UPDATE
# copie du fichier de conf modifié
cp $CONF_FILE $DIR_UPDATE/etc/
# le répertoire "ISO" est remplacé par "system_backup" suite à la suppression de "mondoarchive" (V2.5)
rm -rf /var/Save/ISO
# création de l'archive et copie dans le répertoire WEB associé
cd /tmp
tar -cf alcasar-conf.tar conf/
gzip -f alcasar-conf.tar
[ -d $DIR_SAVE ] && cp alcasar-conf.tar.gz $DIR_SAVE/$fichier
rm -rf $DIR_UPDATE
;;
--load|-load)
cd /tmp
tar -xf /tmp/alcasar-conf*.tar.gz
# Retrieve the logo
[ -e $DIR_UPDATE/organisme.png ] && cp -f $DIR_UPDATE/organisme.png $DIR_WEB/images/
chown apache:apache $DIR_WEB/images/organisme.png $DIR_WEB/intercept.php
# Retrieve the security certificates (CA and server)
[ -e $DIR_UPDATE/alcasar-ca.crt ] && cp -f $DIR_UPDATE/alcasar-ca.crt /etc/pki/CA/
[ -e $DIR_UPDATE/alcasar-ca.key ] && cp -f $DIR_UPDATE/alcasar-ca.key /etc/pki/CA/private/
[ -e $DIR_UPDATE/alcasar.crt ] && cp -f $DIR_UPDATE/alcasar.crt /etc/pki/tls/certs/
[ -e $DIR_UPDATE/alcasar.key ] && cp -f $DIR_UPDATE/alcasar.key /etc/pki/tls/private/
[ -e $DIR_UPDATE/server-chain.crt ] && cp -f $DIR_UPDATE/server-chain.crt /etc/pki/tls/certs/
chown -R root:apache /etc/pki
chmod -R 750 /etc/pki
# Import of the users database
mysql -u$DB_USER -p$radiuspwd < `ls $DIR_UPDATE/radius*`
# Retrieve lacal parameters & Remove blacklist files (now in /usr/local/share)
[ -d $DIR_UPDATE/etc ] && rm -rf $DIR_UPDATE/etc/alcasar-dnsfilter* && cp -rf $DIR_UPDATE/etc/* $DIR_ETC/
# Retrieve Dansguardian files
[ -e $DIR_UPDATE/exceptioniplist ] && cp -f $DIR_UPDATE/exceptioniplist /etc/dansguardian/lists/
[ -e $DIR_UPDATE/exceptionsitelist ] && cp -f $DIR_UPDATE/exceptionsitelist /etc/dansguardian/lists/
[ -e $DIR_UPDATE/urlregexplist ] && cp -f $DIR_UPDATE/urlregexplist /etc/dansguardian/lists/
[ -e $DIR_UPDATE/bannedsitelist ] && cp -f $DIR_UPDATE/bannedsitelist /etc/dansguardian/lists/
[ -e $DIR_UPDATE/exceptionurllist ] && cp -f $DIR_UPDATE/exceptionurllist /etc/dansguardian/lists/
[ -e $DIR_UPDATE/bannedurllist ] && cp -f $DIR_UPDATE/bannedurllist /etc/dansguardian/lists/
[ -d $DIR_UPDATE/ossi ] && cp -rf $DIR_UPDATE/ossi /etc/dansguardian/lists/blacklists/
chown -R dansguardian:apache /etc/dansguardian/lists
chmod -R g+rw /etc/dansguardian/lists
# Adapt DNS/URL filtering
PARENT_SCRIPT=`basename $0`
export PARENT_SCRIPT
$DIR_SBIN/alcasar-bl.sh -adapt
$DIR_SBIN/alcasar-bl.sh -reload
# retrieve dnsmasq general config file
[ -e $DIR_UPDATE/dnsmasq ] && cp -f $DIR_UPDATE/dnsmasq /etc/sysconfig/dnsmasq \
&& chown root.root /etc/sysconfig/dnsmasq \
&& chmod 644 /etc/sysconfig/dnsmasq
# admin profile update (admin + manager + backup)
$DIR_SBIN/alcasar-profil.sh --list
# Start / Stop SSH Daemon
ssh_active=`grep SSH= $CONF_FILE|cut -d"=" -f2`
if [ $ssh_active = "on" ]
then
/sbin/chkconfig --add sshd
else
/sbin/chkconfig --del sshd
fi
# Add module SMS if not exist
# la variable de l'enregistrement SMS est déclarée dans le fichier de conf (Off par défaut)
(grep SMS_REGISTRATION $CONF_FILE) || echo "SMS_REGISTRATION=off" >> $CONF_FILE
# Remove the update folder
rm -rf $DIR_UPDATE
;;
--apply|-apply)
PTN="\b(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\/([012]?[0-9]|3[0-2])\b"
PRIVATE_IP_MASK=`grep ^PRIVATE_IP $CONF_FILE|cut -d"=" -f2`
check=$(echo $PRIVATE_IP_MASK | egrep $PTN)
if [[ "$?" -ne 0 ]]
then
echo "Syntax error for PRIVATE_IP_MASK ($PRIVATE_IP_MASK)"
exit 0
fi
PUBLIC_IP_MASK=`grep ^PUBLIC_IP $CONF_FILE|cut -d"=" -f2`
check=$(echo $PUBLIC_IP_MASK | egrep $PTN)
if [[ "$?" -ne 0 ]]
then
echo "Syntax error for PUBLIC_IP_MASK ($PUBLIC_IP_MASK)"
exit 0
fi
PTN="\b(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\b"
PUBLIC_GATEWAY=`grep ^GW $CONF_FILE|cut -d"=" -f2`
check=$(echo $PUBLIC_GATEWAY | egrep $PTN)
if [[ "$?" -ne 0 ]]
then
echo "Syntax error for the Gateway IP ($PUBLIC_GATEWAY)"
exit 0
fi
DNS1=`grep ^DNS1 $CONF_FILE|cut -d"=" -f2`
check=$(echo $DNS1 | egrep $PTN)
if [[ "$?" -ne 0 ]]
then
echo "Syntax error for the IP address of the first DNS server ($DNS1)"
exit 0
fi
DNS2=`grep ^DNS2 $CONF_FILE|cut -d"=" -f2`
check=$(echo $DNS2 | egrep $PTN)
if [[ "$?" -ne 0 ]]
then
echo "Syntax error for the IP address of the second DNS server ($DNS2)"
exit 0
fi
PUBLIC_IP=`echo $PUBLIC_IP_MASK | cut -d"/" -f1`
PUBLIC_NETMASK=`/bin/ipcalc -m $PUBLIC_IP_MASK | cut -d"=" -f2`
PRIVATE_IP=`echo $PRIVATE_IP_MASK | cut -d"/" -f1`
PRIVATE_NETMASK=`/bin/ipcalc -m $PRIVATE_IP_MASK | cut -d"=" -f2`
private_network_calc
INSTALL_DATE=`grep INSTALL_DATE $CONF_FILE|cut -d"=" -f2`
ORGANISME=`grep ORGANISM $CONF_FILE|cut -d"=" -f2`
DOMAIN=`grep DOMAIN $CONF_FILE|cut -d"=" -f2`
DHCP_mode=`grep DHCP= $CONF_FILE|cut -d"=" -f2`
# create file for DHCP static ip. Reserve the second IP address for INTIF (the first one is for tun0)
echo "$PRIVATE_MAC $PRIVATE_SECOND_IP" > $DIR_ETC/alcasar-ethers
if [ "$PARENT_SCRIPT" != "alcasar.sh" ] # don't launch on install stage
then
if [ $DHCP_mode = "off" ]
then
$DIR_SBIN/alcasar-dhcp.sh --off
fi
# Logout everybody
$DIR_SBIN/alcasar-logout.sh all
# Services stop
for i in ntpd chilli httpd network
do
systemctl stop $i && echo "$i stopped"
done
fi
# /etc/hosts
cat <<EOF > /etc/hosts
127.0.0.1 localhost
$PRIVATE_IP $HOSTNAME $HOSTNAME.$DOMAIN
EOF
# Ext Network Card config
$SED "s?^IPADDR=.*?IPADDR=$PUBLIC_IP?" /etc/sysconfig/network-scripts/ifcfg-$EXTIF
$SED "s?^NETMASK=.*?NETMASK=$PUBLIC_NETMASK?" /etc/sysconfig/network-scripts/ifcfg-$EXTIF
$SED "s?^GATEWAY=.*?GATEWAY=$PUBLIC_GATEWAY?" /etc/sysconfig/network-scripts/ifcfg-$EXTIF
# NTP server
$SED "/127.0.0.1/!s?^restrict.*?restrict $PRIVATE_NETWORK mask $PRIVATE_NETMASK nomodify notrap?g" /etc/ntp.conf
# host.allow
cat <<EOF > /etc/hosts.allow
ALL: LOCAL, 127.0.0.1, localhost, $PRIVATE_IP
sshd: ALL
ntpd: $PRIVATE_NETWORK_SHORT
EOF
# Alcasar Control Center
$SED "s?^Listen.*?Listen $PRIVATE_IP:80?g" /etc/httpd/conf/httpd.conf
FIC_MOD_SSL=`find /etc/httpd/conf/ -type f -name ssl.conf`
$SED "s?^Listen.*?Listen $PRIVATE_IP:443?g" $FIC_MOD_SSL
$SED "/127.0.0.1/!s?Allow from .*?Allow from $PRIVATE_NETWORK_MASK?g" /etc/httpd/conf/webapps.d/alcasar.conf
# Dialup_Admin
$SED "s?^nas1_name:.*?nas1_name: alcasar-$ORGANISME?g" /etc/freeradius-web/naslist.conf
$SED "s?^nas1_ip:.*?nas1_ip: $PRIVATE_IP?g" /etc/freeradius-web/naslist.conf
# coova
#$SED "s?ifconfig.*?ifconfig \$HS_LANIF $PRIVATE_IP?g" /etc/init.d/chilli
$SED "s?^net.*?net\t\t$PRIVATE_NETWORK_MASK?g" /etc/chilli.conf
$SED "s?^dns1.*?dns1\t\t$PRIVATE_IP?g" /etc/chilli.conf
$SED "s?^dns2.*?dns2\t\t$PRIVATE_IP?g" /etc/chilli.conf
$SED "s?^uamlisten.*?uamlisten\t$PRIVATE_IP?g" /etc/chilli.conf
# dhcp (coova + dnsmasq)
$DIR_SBIN/alcasar-dhcp.sh -$DHCP_mode
# dnsmasq
$SED "/127.0.0.1/!s?^listen-address=.*?listen-address=$PRIVATE_IP?g" /etc/dnsmasq.conf /etc/dnsmasq-blacklist.conf /etc/dnsmasq-whitelist.conf
for i in /etc/dnsmasq.conf /etc/dnsmasq-blacklist.conf
do
$SED "/^server=/d" $i
echo "server=$DNS1" >> $i
echo "server=$DNS2" >> $i
done
$SED "s?^dhcp-range=.*?dhcp-range=$PRIVATE_SECOND_IP,$PRIVATE_LAST_IP,$PRIVATE_NETMASK,12h?g" /etc/dnsmasq.conf
$SED "s?^dhcp-option=option:router.*?dhcp-option=option:router,$PRIVATE_IP?g" /etc/dnsmasq.conf
# DG + BL
$SED "s?^filterip.*?filterip = $PRIVATE_IP?g" /etc/dansguardian/dansguardian.conf
# Watchdog
$SED "s?^PRIVATE_IP=.*?PRIVATE_IP=\"$PRIVATE_IP\"?g" $DIR_BIN/alcasar-watchdog.sh
# SSHD
$SED "/^ListenAddress/d" /etc/ssh/sshd_config
# $SED "s?^#ListenAddress 0\.0\.0\.0?ListenAddress $PRIVATE_IP?g" /etc/ssh/sshd_config
$SED "/ListenAddress 0.0.0.0.*/a\ListenAddress $PUBLIC_IP" /etc/ssh/sshd_config
$SED "/ListenAddress $PUBLIC_IP/a\ListenAddress $PRIVATE_IP" /etc/ssh/sshd_config
# Prompts
$SED "s?^ORGANISME.*?ORGANISME=$ORGANISME?g" /etc/bashrc
# sudoers
$SED "s?^Host_Alias.*?Host_Alias LAN_ORG=$PRIVATE_NETWORK/$PRIVATE_NETMASK,localhost #réseau de l'organisme?g" /etc/sudoers
if [ "$PARENT_SCRIPT" != "alcasar.sh" ] # don't launch on install stage
then
# Services start
for i in network ntpd chilli httpd
do
systemctl start $i && echo "$i started"
done
# Reload BL (restart DG, dnsmasq & iptables)
$DIR_SBIN/alcasar-bl.sh -reload
fi
# Start / Stop SSH Daemon
ssh_active=`grep SSH= $CONF_FILE|cut -d"=" -f2`
if [ $ssh_active = "on" ]
then
/bin/systemctl enable sshd.service
if [ "$PARENT_SCRIPT" != "alcasar.sh" ] # don't launch on install stage
then
/bin/systemctl start sshd.service
fi
else
/bin/systemctl disable sshd.service
if [ "$PARENT_SCRIPT" != "alcasar.sh" ] # don't launch on install stage
then
/bin/systemctl stop sshd.service
fi
fi
;;
*)
echo "Argument inconnu :$1";
echo "$usage"
exit 1
;;
esac