#!/bin/sh
# copyright (C) 2013 FUJITSU LIMITED All Rights Reserved

# 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; version 2
# of the License.
# 
# 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.
# 
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  
# 02110-1301, USA.

# check options
FLG_P=0
FILEPATH=""

while getopts sjc:p: OPT
do
  case $OPT in
    "p" ) FLG_P=1 ; FILEPATH=$OPTARG
	if ! [ -d $FILEPATH ] ; then
		echo $FILEPATH "is not a directory"
		exit 1
	fi
	;;
  esac
done

shift `expr $OPTIND - 1`

# check args
if [ $# -lt 2 ]; then
	echo "usage lxcf clone SRC-LXCNAME DIST-LXCNAME"
	exit 1
fi

# args and environment variables
BASENAME=${1}
VAL_PREFIX="/opt/lxcf"

shift 1

if ! /usr/lib/lxcf/lxcf-parmchk-cname $BASENAME ; then
  echo $BASENAME "is not a container name"
  exit 1
fi

if ! [ -e /opt/lxcf/${BASENAME} ] ; then
  echo 'cannot find' $BASENAME
  exit -1
fi

# clone one container
lxcf_clone1() {
  LXCNAME=${1}

  if ! /usr/lib/lxcf/lxcf-parmchk-cname $LXCNAME ; then
    echo $LXCNAME "is not a container name"
    exit 1
  fi

  # check LXCNAME
  if [ -e /${VAL_PREFIX}/${LXCNAME}/etc/lxcf/rsc/${LXCNAME} ] ; then
	echo "There is already " ${LXCNAME}
	exit 1
  fi 

  # new container dir
  mkdir -p /etc/lxcf/rsc/${LXCNAME}

  echo "create "${VAL_PREFIX}/${LXCNAME}
  mkdir -p ${VAL_PREFIX}/${LXCNAME}

  # copy source dir to dist dir
  #rsync -al --inplace  ${VAL_PREFIX}/${BASENAME}/ ${VAL_PREFIX}/${LXCNAME}
  rm -rf ${VAL_PREFIX}/${LXCNAME}

  # set symbolic link for -p option
  if [ $FLG_P -eq 1 ] ; then
    mkdir -p ${FILEPATH}/${LXCNAME}
    cp -a  ${VAL_PREFIX}/${BASENAME}/* ${FILEPATH}/${LXCNAME}/.
    ln -s  ${FILEPATH}/${LXCNAME}  ${VAL_PREFIX}/${LXCNAME}
  else
    cp -a  ${VAL_PREFIX}/${BASENAME} ${VAL_PREFIX}/${LXCNAME}
  fi

  mkdir -p ${VAL_PREFIX}/${LXCNAME}/usr
  mkdir -p ${VAL_PREFIX}/${LXCNAME}/opt

  # create xml file
  rm -rf ${VAL_PREFIX}/${LXCNAME}/etc/lxcf/rsc/${LXCNAME}
  cp -pr ${VAL_PREFIX}/${BASENAME}/etc/lxcf/rsc/${BASENAME} ${VAL_PREFIX}/${LXCNAME}/etc/lxcf/rsc/${LXCNAME}
  mv ${VAL_PREFIX}/${LXCNAME}/etc/lxcf/rsc/${LXCNAME}/${BASENAME}.xml ${VAL_PREFIX}/${LXCNAME}/etc/lxcf/rsc/${LXCNAME}/${LXCNAME}.xml
  sed -i "s/${BASENAME}/${LXCNAME}/" ${VAL_PREFIX}/${LXCNAME}/etc/lxcf/rsc/${LXCNAME}/${LXCNAME}.xml
  sed -i "s/${BASENAME}/${LXCNAME}/" ${VAL_PREFIX}/${LXCNAME}/etc/lxcf/rsc/${LXCNAME}/${LXCNAME}.xml
  sed -i "/<uuid>/d" ${VAL_PREFIX}/${LXCNAME}/etc/lxcf/rsc/${LXCNAME}/${LXCNAME}.xml

  # create resource.val file
  cp -pr /etc/lxcf/rsc/${BASENAME} /etc/lxcf/rsc/${LXCNAME}
  sed -i "s/${BASENAME}/${LXCNAME}/g" /etc/lxcf/rsc/${LXCNAME}/resource.val

  # create container_name
  cp -p /opt/lxcf/${BASENAME}/etc/lxcf/container_name /opt/lxcf/${LXCNAME}/etc/lxcf/container_name
  sed -i "s/${BASENAME}/${LXCNAME}/g" /opt/lxcf/${LXCNAME}/etc/lxcf/container_name

  # create hostname
  echo ${LXCNAME} > ${VAL_PREFIX}/${LXCNAME}/etc/hostname

  # clone ip address
  /usr/lib/lxcf/lxcf-clone-setup ${LXCNAME}

  # create authorized_keys
  echo "create authorized_keys"
  mkdir -p ${VAL_PREFIX}/${LXCNAME}/root/.ssh
  chmod 700 ${VAL_PREFIX}/${LXCNAME}/root/.ssh/
  cp /root/.ssh/lxcf_rsa.pub ${VAL_PREFIX}/${LXCNAME}/root/.ssh/authorized_keys
  chmod 600 ${VAL_PREFIX}/${LXCNAME}/root/.ssh/authorized_keys

  echo "created files " ${LXCNAME}

  # define new container
  /usr/lib/lxcf/lxcf-define ${LXCNAME}

  # start new container
  /usr/lib/lxcf/lxcf-start ${LXCNAME}

  # create known_hosts entry
  sed -i "/^${LXCNAME}[ |,]/d"  /root/.ssh/known_hosts
  ssh-keyscan localhost |& egrep "ssh-rsa" >> /root/.ssh/known_hosts 
  LXCIPADR=`awk '{if ($2 == "'${LXCNAME}'") printf "%s",$1}' /etc/hosts`
  sed -i "s/localhost/${LXCNAME},${LXCIPADR}/" /root/.ssh/known_hosts

}

# clone containers of args
for name in $*
do
	lxcf_clone1 $name
done

exit 0
