#!/bin/bash
# Create UML root filesystem
#
# Copyright (C) 2004  Eric Marchionni, Patrik Rayo
# Zuercher Hochschule Winterthur
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation; either version 2 of the License, or (at your
# option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
# or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
# for more details.
#
# RCSID $Id: build-umlrootfs,v 1.11 2006/01/08 22:29:56 as Exp $

DIR=`dirname $0`

source $DIR/function.sh

[ -f $DIR/../testing.conf ] || die "!! Configuration file 'testing.conf' not found"

source $DIR/../testing.conf

STRONGSWANVERSION=`basename $STRONGSWAN .tar.bz2`

cecho-n " * Looking for strongSwan at '$STRONGSWAN'.."
if [ -f "$STRONGSWAN" ]
then
    cecho "found it"
    cecho " * strongSwan version is '$STRONGSWANVERSION'"
else
    cecho "none"
    exit
fi

cecho-n " * Looking for gentoo root filesystem at '$ROOTFS'.."
if [ -f "$ROOTFS" ]
then
    cecho "found it"
else
    cecho "none"
    exit
fi

[ -d $BUILDDIR ] || die "!! Directory '$BUILDDIR' does not exist"

HOSTCONFIGDIR=$BUILDDIR/hosts

[ -d $HOSTCONFIGDIR ] || die "!! Directory '$HOSTCONFIGDIR' does not exist"

LOGFILE=$BUILDDIR/testing.log

if [ ! -f $LOGFILE ]
then
    cecho-n " * Logfile '$LOGFILE' does not exist..creating.."
    touch $LOGFILE
    cecho "done"
fi

ROOTFSDIR=$BUILDDIR/root-fs

if [ ! -d $ROOTFSDIR ]
then
    cecho-n " * Root file system directory '$ROOTFSDIR' does not exist..creating.."
    mkdir $ROOTFSDIR
    cecho "done"
fi

cd $ROOTFSDIR

LOOPDIR=$ROOTFSDIR/loop

if [ ! -d $LOOPDIR ]
then
    mkdir $LOOPDIR
fi

######################################################
# creating reiser-based uml root filesystem
#

cecho-n " * Building basic root filesystem (gentoo).."
dd if=/dev/zero of=gentoo-fs count=$ROOTFSSIZE bs=1M >> $LOGFILE 2>&1
mkreiserfs -q -f gentoo-fs       >> $LOGFILE 2>&1
mount -o loop gentoo-fs $LOOPDIR >> $LOGFILE 2>&1
tar xjpf $ROOTFS -C $LOOPDIR     >> $LOGFILE 2>&1
cecho "done"

######################################################
# remove /etc/resolv.conf
#
cecho " * Removing /etc/resolv.conf"
rm -f $LOOPDIR/etc/resolv.conf

######################################################
# copying default /etc/hosts to the root filesystem
#
cecho " * Copying '$HOSTCONFIGDIR/default/etc/hosts' to the root filesystem"
cp -fp $HOSTCONFIGDIR/default/etc/hosts $LOOPDIR/etc/hosts

#####################################################
# extracting strongSwan into the root filesystem
#
cecho " * Extracting strongSwan into the root filesystem"
tar xjf $STRONGSWAN -C $LOOPDIR/root >> $LOGFILE 2>&1

######################################################
# setting up mountpoint for shared source tree
#
if [ "${SHAREDTREE+set}" = "set" ]; then
    cecho " * setting up shared strongswan tree at '$SHAREDTREE'"
    mkdir $LOOPDIR/root/strongswan-shared
    echo "" >> $LOOPDIR/etc/fstab
    echo "none /root/strongswan-shared hostfs $SHAREDTREE" >> $LOOPDIR/etc/fstab
fi

######################################################
# installing strongSwan and setting the local timezone
#

INSTALLSHELL=${LOOPDIR}/install.sh

cecho " * Preparing strongSwan installation script"
echo "ln -sf /usr/share/zoneinfo/${TZUML} /etc/localtime" >> $INSTALLSHELL

echo "cd /root/${STRONGSWANVERSION}" >> $INSTALLSHELL
echo -n "./configure --sysconfdir=/etc" >> $INSTALLSHELL
echo -n " --with-random-device=/dev/urandom" >> $INSTALLSHELL
if [ "$USE_LIBCURL" = "yes" ]
then
    echo -n " --enable-http" >> $INSTALLSHELL
fi

if [ "$USE_LDAP" = "yes" ]
then
    echo -n " --enable-ldap" >> $INSTALLSHELL
fi

if [ "$USE_LEAK_DETECTIVE" = "yes" ]
then
    echo -n " --enable-leak-detective" >> $INSTALLSHELL
fi
echo "" >> $INSTALLSHELL
echo "make" >> $INSTALLSHELL
echo "make install" >> $INSTALLSHELL
echo "ldconfig" >> $INSTALLSHELL

cecho-n " * Compiling $STRONGSWANVERSION within the root file system as chroot.."
chroot $LOOPDIR /bin/bash /install.sh >> $LOGFILE 2>&1
cecho "done"

rm -f $INSTALLSHELL


######################################################
# copying the host's ssh public key
#

if [ ! -d $LOOPDIR/root/.ssh ]
then
    mkdir $LOOPDIR/root/.ssh
fi
cp ~/.ssh/id_rsa.pub $LOOPDIR/root/.ssh/authorized_keys

######################################################
# setup public key based login among all hosts
#
cp $LOOPDIR/etc/ssh/ssh_host_rsa_key $LOOPDIR/root/.ssh/id_rsa

for host in $STRONGSWANHOSTS
do
    eval ip="`echo $HOSTNAMEIPV4 | sed -n -e "s/^.*${host},//gp" | awk -F- '{ print $1 }' | awk '{ print $1 }'`"
    echo "$host,$ip `cat $HOSTCONFIGDIR/ssh_host_rsa_key.pub`" >> $LOOPDIR/root/.ssh/known_hosts
    echo "`cat $HOSTCONFIGDIR/ssh_host_rsa_key.pub` root@$host" >> $LOOPDIR/root/.ssh/authorized_keys
done

######################################################
# defining an empty modules.dep
#

if [ $UMLPATCH ]
then
    mkdir $LOOPDIR/lib/modules/`basename $UMLPATCH .bz2 | sed s/uml-patch-//`um
    touch $LOOPDIR/lib/modules/`basename $UMLPATCH .bz2 | sed s/uml-patch-//`um/modules.dep
else
    mkdir $LOOPDIR/lib/modules/$KERNELVERSION
    touch $LOOPDIR/lib/modules/$KERNELVERSION/modules.dep
fi

umount $LOOPDIR
