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#!/bin/bash
#/**
#@file setserveraddr
#@brief Assign default IP address to OpenGnsys services.
#@usage setserveraddr {str_ipaddress | str_netiface}
#@param str_ipaddress IP address assigned to a network interface
#@param str_netiface network interface name defined by the operating system
#@version Initial version.
#@author Ramón M. Gómez - ETSII Univ. Sevilla
#@date 2011-01-25
#@version 1.0.5 - Regenerate configuration files.
#@author Ramón M. Gómez - ETSII Univ. Sevilla
#@date 2014-06-06
#@version 1.1.1 - Updating menu URLs and PXE files.
#@author Ramón M. Gómez - ETSII Univ. Sevilla
#@date 2018-11-15
#*/ ##
# Variables.
PROG="$(basename "$0")"
OPENGNSYS=/opt/opengnsys
PXEDIRS="$OPENGNSYS/tftpboot/menu.lst $OPENGNSYS/tftpboot/grub"
DEFAULTFILE=/etc/default/opengnsys
# Functions.
source $OPENGNSYS/lib/ogfunctions.sh
# Checking parameters.
[ "$USER" != "root" ] && raiseError access "Need to be root"
[ $# -ne 1 ] && raiseError usage
[ -r $DEFAULTFILE ] || raiseError access "Cannot read default configuration file"
for f in $OPENGNSYS/{etc/{ogAdmServer,ogAdmRepo,ogAdmAgent}.cfg,www/controlacceso.php,client/etc/ogAdmClient.cfg}; do
[ -w $f ] || raiseError access "Cannot write to file: $f"
done
# Show help message.
[ "$1" == "help" ] && help
# Detecting network interfaces.
DEVICES=$(ip -o link show up | awk -F: '$2!~/lo/ {print $2}')
for DEV in $DEVICES; do
# If the network interface is found, get its IP address.
IP=$(ip -o addr show dev "$DEV" | awk '$3~/inet$/ {sub (/\/.*/, ""); print ($4)}')
if [ "$DEV" == "$1" ] || [ "$IP" == "$1" ]; then
SERVERIP="$IP"
SERVERDEV="$DEV"
fi
done
# Checking if IP address has been detected.
if [ -n "$SERVERIP" ]; then
# Showing warning to inform that initiated clients may hang.
read -rp "WARNING: initiated clients can hang. Continue? (y/n): " ANSWER
[ "${ANSWER,,}" != "y" ] && raiseError cancel "Do nothing"
# Temporary files.
tmpfile=$(mktemp /tmp/og.XXXXX)
MYCNF=$(mktemp /tmp/.my.cnf.XXXXX)
trap "rm -f $tmpfile $MYCNF" 1 2 3 6 9 15
# Checking whether the DHCP settings need to be changed.
CHANGE=0
for f in /etc/{dhcp,hcp3}/dhcpd.conf; do
if [ -f $f ]; then
# Changing DHCP "next-server" parameter.
file="${f/./-$SERVERDEV.}"
sed -e "s/next-server.*/next-server $SERVERIP;/" \
-e "s/option routers ;/option routers ${SERVERIP%.*}.1;/" $file >$tmpfile
# Copying and linking file if there are changes.
if [ ! $f -ef $file ] || ! diff -q $tmpfile $file &>/dev/null; then
mv $tmpfile $file
chmod 644 $file
ln -f $file $f
CHANGE=1
fi
fi
done
# Restarting DHCP service if its configuration has changed.
if [ $CHANGE == 1 ]; then
for s in isc-dhcp-server dhcp3-server dhcpd; do
restart $s &>/dev/null && break
done
else
echo "DHCP configuration has not changed."
fi
# Saving old IP address.
source $OPENGNSYS/etc/ogAdmServer.cfg
OLDSERVERIP=$ServidorAdm
# Checking if configuration files need to be modified.
CHANGE=0
for f in $OPENGNSYS/{etc/{ogAdmServer,ogAdmRepo,ogAdmAgent}.cfg,www/controlacceso.php,client/etc/ogAdmClient.cfg}; do
# Updating configuration variables (if URL does not contain "localhost").
sed -e "s,\(ServidorAdm\|IPlocal\)=.*,\1=$SERVERIP," \
-e "s,^INTERFACE=.*,INTERFACE=$SERVERDEV," \
-e "s,UrlMenu=https?://\([^/]*\)/\(.*\),UrlMenu=https://$SERVERIP/\2," \
-e '/localhost/!s,https\?://[^/]*/\(.*\),https://'$SERVERIP'/\1,' $f >$tmpfile
file="${f/./-$SERVERDEV.}"
# Copying updated file, if needed.
if [ ! $f -ef $file ] || ! diff -q $tmpfile $file &>/dev/null; then
cp $tmpfile $file
ln -f $file $f
CHANGE=1
fi
done
# Processing when something has changed.
if [ $CHANGE == 1 ]; then
# Restart OpenGnsys services.
echo "Restarting services..."
restart opengnsys >/dev/null
source $DEFAULTFILE
# If OpenGnsys Server is active, updating the database.
if [ "$RUN_OGADMSERVER" == "yes" ]; then
# Creating credentials file.
cat << EOT > $MYCNF
[client]
user=$USUARIO
password=$PASSWORD
EOT
# Updating IP addresses and menu URLs.
mysql --defaults-extra-file=$MYCNF -D "$CATALOG" << EOT
UPDATE entornos
SET ipserveradm='$SERVERIP'
WHERE identorno=1;
UPDATE repositorios
SET ip='$SERVERIP'
WHERE ip='$OLDSERVERIP';
UPDATE menus
SET htmlmenupub = REPLACE(htmlmenupub, '$OLDSERVERIP', '$SERVERIP'),
htmlmenupri = REPLACE(htmlmenupri, '$OLDSERVERIP', '$SERVERIP');
EOT
# Updating all PXE files.
find $PXEDIRS -name "01-*" -exec sed -i -e "s/$OLDSERVERIP/$SERVERIP/g" {} \;
fi
# Showing manual task to do after execution.
cat << EOT
Default server interface set to: $SERVERDEV ($SERVERIP)
Manual tasks:
- Check DHCP configuration file and restart service, if needed.
- Check PXE files.
- Log-in as Web Console user:
- Check menu URLs.
- Note: Run "settoken" script to update authentication tokens.
EOT
else
# Showing message if nothing changes.
echo "Default interface has not changed: $1"
fi
else
# Error if network interface is not found.
raiseError notfound "Network device"
fi
# Removing temporary files.
rm -f $tmpfile $MYCNF
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