#!/bin/sh

DYNAMIPS_BUILD=yes
XENOMIPS_FS_BUILD=yes
CONFIG_FS_BUILD=no
IOS_FS_BUILD=yes

#Xenomips FS
XENOMIPS_FS_SIZE=2048k                  # size in 1k blocks
XENOMIPS_FS_NAME=xenomips1.img

# Config FS
CONFIG_FS_SIZE=100k
CONFIG_FS_NAME=xenomips-config1.img

# IOS FS
IOS_FS_SIZE=2048k
IOS_FS_NAME=xenomips-ios1.img


XENOMIPS_DIR="files/"


DEBIAN_MIRROR=http://debian.org.ua/debian
DISTRO=sid
PACKAGES="openssh-server libc6-xen libelf1 libpcap0.8 screen nfs-common quagga"
DYNAMIPS_SOURCES=http://www.ipflow.utc.fr/dynamips/dynamips-0.2.7.tar.gz
DYNAMIPS_BUILD_DIR=dynamips/
KERNEL_VERSION=`uname -r`
SSH_OPEN_KEY=files/id_dsa.pub

IOS_DIR="ios/"

WORK_DIR=${XENOMIPS_FS_NAME%%.img}

build_and_install_dynamips()
{
    OLD_PWD="`pwd`"
    DESTDIR=`pwd`/${WORK_DIR}

    if echo $DYNAMIPS_BUILD | grep -qi ^y
    then
        rm -rf ${DYNAMIPS_BUILD_DIR}/
        mkdir -p ${DYNAMIPS_BUILD_DIR}/
        cd ${DYNAMIPS_BUILD_DIR}/
        wget $DYNAMIPS_SOURCES
        tar xfz dynamips*tar*
        cd dynamips*/
        perl -p -i -e s@^PCAP_LIB=.*@PCAP_LIB=-lpcap@ Makefile
        make
    else
        cd ${DYNAMIPS_BUILD_DIR}/dynamips*/
    fi
    make install DESTDIR=${DESTDIR}
    cd ${OLD_PWD}
}


dd if=/dev/zero of=${XENOMIPS_FS_NAME} count=${XENOMIPS_FS_SIZE} bs=1024
mkfs.ext3 -F ${XENOMIPS_FS_NAME}
mkdir -p ${WORK_DIR}
mount -o loop ${XENOMIPS_FS_NAME} ${WORK_DIR}
debootstrap  ${DISTRO} ${WORK_DIR} ${DEBIAN_MIRROR} 
cat <<SCRIPT | chroot ${WORK_DIR} sh -s
unset LANG
apt-get -y --force-yes install ${PACKAGES}
/etc/init.d/ssh stop
cat <<FSTAB > /etc/fstab
/dev/hda1       /                       ext3    ro              0       0
/dev/hda2       /xenomips/ios           ext3    ro              0       0
/dev/hda3       /xenomips/config        ext3    rw              0       0
FSTAB
mkdir -p /data/Cisco_IOS /xenomips

cat <<'INTERFACES' > /etc/network/interfaces
auto lo eth0

iface lo inet loopback 
        up for i in \`ifconfig -a | grep 'eth.*Link encap' | awk '{print \$1}'\`; do ifconfig \$i up ; done || true

iface eth0 inet dhcp
INTERFACES

echo /usr/local/bin/xenomips.sh > /etc/rc.local
cd /etc/rcS.d; ln -s ../init.d/xenomips-init S35xenomips-init
rm /etc/rc2.d/S*quagga

perl -i -p -e s@C_PATH=/etc/quagga@C_PATH=/xenomips/etc/quagga@ /etc/init.d/quagga

mkdir -p /xenomips/{ios,config,dynamips,etc/quagga} /var/lib/xenomips /root/.ssh

screen -ls | grep -q Attached && screen -x || screen -ls | grep -q Detached && screen -r
SCRIPT

cp -R /lib/modules/${KERNEL_VERSION} ${WORK_DIR}/lib/modules

cp ${XENOMIPS_DIR}/xenomips-init ${WORK_DIR}/etc/init.d/
cp ${XENOMIPS_DIR}/xenomips.sh ${WORK_DIR}/usr/local/bin
sudo chmod +x  ${WORK_DIR}/usr/local/bin/xenomips.sh ${WORK_DIR}/etc/init.d/xenomips-init

cat ${SSH_OPEN_KEY} > ${WORK_DIR}/root/.ssh/authorized_keys
chmod 600  ${WORK_DIR}/root/.ssh/authorized_keys

build_and_install_dynamips

umount ${WORK_DIR}

if  echo $CONFIG_FS_BUILD | grep -qi ^y
then
    dd if=/dev/zero of=${CONFIG_FS_NAME} bs=1k count=${CONFIG_FS_SIZE}
    mkfs.ext3 -F ${CONFIG_FS_NAME}
fi


if echo $IOS_FS_BUILD | grep -qi ^y
then
    dd if=/dev/zero of=${IOS_FS_NAME} bs=1k count=${CONFIG_FS_SIZE}
    mkfs.ext3 -F ${IOS_FS_NAME}
    mount -o loop ${IOS_FS_NAME} ${WORK_DIR}
    cp ${IOS_DIR}/* ${WORK_DIR}
    umount ${WORK_DIR}
fi