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-rwxr-xr-xserver/bin/setserveraddr3115
1 files changed, 115 insertions, 0 deletions
diff --git a/server/bin/setserveraddr3 b/server/bin/setserveraddr3
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+#!/bin/bash
+
+#/**
+# setserveraddr {str_ipaddress | str_netiface}
+#@file setserveraddr
+#@brief Command the modifies configuration files to assign the default network interface.
+#@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, PXE files, and repository API key.
+#@author Ramón M. Gómez - ETSII Univ. Sevilla
+#@date 2018-11-15
+#*/ ##
+
+
+# Variables.
+PROG="$(basename "$0")"
+OPENGNSYS=/opt/opengnsys
+PXEDIR=$OPENGNSYS/tftpboot/menu.lst
+CONFIGFILE=$OPENGNSYS/etc/opengnsys.json
+
+# Checking parameters.
+if [ $# -ne 1 ]; then
+ echo "$PROG: Incorrect operand. Format: $PROG ipaddress|netiface" >&2
+ exit 1
+fi
+if [ "$USER" != "root" ]; then
+ echo "$PROG: Need to be root." >&2
+ exit 1
+fi
+
+# Showing warning to inform that initiated clients may hang.
+read -rp "WARNING: initiated clients can hang. Continue? (y/n): " ANSWER
+if [ "${ANSWER,,}" != "y" ]; then
+ echo "Operation canceled."
+ exit 0
+fi
+
+# 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
+ # Temporary files.
+ tmpfile=$(mktemp /tmp/og.XXXXX)
+ trap "rm -f $tmpfile" 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 f in /etc/init.d/{isc-dhcp-server,dhcp3-server,dhcpd}; do
+ [ -x $f ] && $f restart
+ done
+ else
+ echo "DHCP configuration has not changed."
+ fi
+
+ OLDSERVERIP=$(jq -r .server.ip $CONFIGFILE)
+ if [ "$SERVERIP" != "$OLDSERVERIP" ]; then
+ # Updating configuration file.
+ jq ".server.ip=\"$SERVERIP\"" $CONFIGFILE | sponge $CONFIGFILE
+ # Updating all PXE files.
+ find $PXEDIR -name "01-*" -exec sed -i -e "s/$OLDSERVERIP/$SERVERIP/g" {} \;
+ # 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.
+EOT
+ else
+ # Showing message if nothing changes.
+ echo "Default interface has not changed: $1"
+ fi
+else
+ # Error if network interface is not found.
+ echo "$PROG: Network device not found. Format: $PROG ipaddress|netiface" >&2
+ exit 1
+fi
+
+# Removing temporary file.
+rm -f $tmpfile
+