#!/bin/bash -u
# ******************************************************************************* 
#                        Confirmation and Passphrase setting 
# ******************************************************************************* 

function confirmation(){

# Sanity check for volume group name
if echo ${VGNAME} | grep "-" -i > /dev/null ; then	# "-" is found in the volume group name.
	cat <<HEREDOC 1>&2
***** ERROR : VGNAME is "${VGNAME}" *****
THe "-" is not allowed in the volume name. 
Check passphrase and config.txt

Installation terminated.
HEREDOC
		return 1
fi # "-" is found in the volume group name.

# Sanity check for root volume name
if echo ${LVROOTNAME} | grep "-" -i > /dev/null ; then	# "-" is found in the volume name.
	cat <<HEREDOC 1>&2
***** ERROR : LVROOTNAME is "${LVROOTNAME}" *****
THe "-" is not allowed in the volume name. 
Check passphrase and config.txt

Installation terminated.
HEREDOC
		return 1
fi # "-" is found in the volume name.

# Sanity check for swap volume name
if echo ${LVSWAPNAME} | grep "-" -i > /dev/null ; then	# "-" is found in the volume name.
	cat <<HEREDOC 1>&2
***** ERROR : LVSWAPNAME is "${LVSWAPNAME}" *****
THe "-" is not allowed in the volume name. 
Check passphrase and config.txt

Installation terminated.
HEREDOC
		return 1
fi # "-" is found in the volume name.

# For surre ask the config.sh is edited
cat <<HEREDOC

The destination logical volume label is "${LVROOTNAME}"
"${LVROOTNAME}" uses ${LVROOTSIZE} of the LVM volume group.
Are you ready to install? [Y/N]
HEREDOC
read YESNO
if [ ${YESNO} != "Y" -a ${YESNO} != "y" ] ; then
	cat <<HEREDOC 1>&2

Installation terminated.
HEREDOC
	return 1
fi	# if YES

# For sure ask ready to erase. 
if [ ${ERASEALL} -eq 1 ] ; then
	echo "Are you sure you want to erase entire ${DEV}? [Y/N]"
	read YESNO
	if [ ${YESNO} != "Y" -a ${YESNO} != "y" ] ; then
		cat <<HEREDOC 1>&2
Check config.sh. The variable ERASEALL is ${ERASEALL}.

Installation terminated.
HEREDOC
		return 1
	fi	# if YES
fi	# if erase all

# ----- Set Passphrase -----
# Input passphrase
echo "Type passphrase for the disk encryption."
read -sr PASSPHRASE
export PASSPHRASE

echo "Type passphrase again, to confirm."
read -sr PASSPHRASE_C

# Validate whether both are indentical or not
if [ ${PASSPHRASE} != ${PASSPHRASE_C} ] ; then
	cat <<HEREDOC 1>&2
***** ERROR : Passphrase doesn't match *****

Installation terminated.
HEREDOC
	return 1
fi	# passphrase validation

# succesfull return
return 0
}