source: server/bin/setserveraddr @ bef5e61

#!/bin/bash
# setserveraddr: modifica los ficheros de configuración para asignar los valores
#       de la interfaz de red solicitada.
# Nota: se enlazan los ficheros a los predefinidos detectados para la interfaz.
# Uso:  setserveraddr iface
# Autor: Ramon Gomez - Univ. Sevilla
# Fecha: 2011-01-25


# Comprobar parámetros.
PROG="$(basename $0)"
if [ $# -ne 1 ]; then
        echo "$PROG: Incorrect operand. Format: $PROG device" >&2
        exit 1
fi
if [ "$USER" != "root" ]; then
        echo "$PROG: Need to be root." >&2
        exit 1
fi

# Detectar la interfaz de red.
DEVICES=$(ip -o link show up|awk -F: '$2!~/lo/ {print $2}')
FOUND=0
for dev in $DEVICES; do
        [ "$dev" == "$1" ] && FOUND=1;
done

if [ $FOUND == 1 ]; then
        # Comprobar si hay que modificar la configuración de DHCP.
        CHANGE=0
        for f in /etc/{dhcp,dhcp3}/dhcpd.conf; do
                file="${f/./-$1.}"
                if [ -f $file -a ! $f -ef $file ]; then
                        ln -f $file $f
                        CHANGE=1
                fi
        done
        # Si ha cambiado la configuración, reiniciar DHCP.
        if [ $CHANGE == 1 ]; then
                for f in /etc/init.d/{isc-dhcp-server,dhcp3-server,dhcpd}; do
                        [ -x $f ] && $f restart
                done
        else
                echo "Don't change the DHCP configuration."
        fi
        # Comprobar si hay que modificar la configuración de OpenGnsys.
        OPENGNSYS=/opt/opengnsys
        CHANGE=0
        for f in etc/{ogAdmServer,ogAdmRepo,ogAdmAgent}.cfg www/controlacceso.php client/etc/ogAdmClient.cfg; do
                file="$OPENGNSYS/${f/./-$1.}"
                if [ ! -f $file ]; then
                        echo "$PROG: File $file does not exist." >&2
                        exit 2
                fi
                cfg=$OPENGNSYS/$f
                if [ ! $cfg -ef $file ]; then
                        ln -f $file $cfg
                        CHANGE=1
                fi
        done
        # Si ha cambiado la configuración, reiniciar OpenGnSys y actualizar la BD.
        if [ $CHANGE == 1 ]; then
                /etc/init.d/opengnsys restart
                source $OPENGNSYS/etc/ogAdmServer.cfg
                mysql -u "$USUARIO" -p"$PASSWORD" -D "$CATALOG" -N -e \
                         "UPDATE entornos SET ipserveradm='$ServidorAdm' WHERE identorno=1"
                echo "Default server interface set to: $1 ($ServidorAdm)"
        else
                echo "Don't change the default interface: $1"
        fi
else
        echo "$PROG: Network device not found. Format: $PROG device" >&2
        exit 1
fi