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#!/bin/sh
# Why not use "openct-tool rwait" instead of polling opensc-tool exit status?
# Well openct daemon has to be running which interferes with pcscd since both
# implement reader drivers, my particular CCID reader (SCM SCR331-LC1) doesn't
# work with the CCID driver in openct, however it does work with pcscd.
# Why not use "opensc-tool --wait" instead of polling opensc-tool exit status?
# Although opensc-tool --help reports that there is a --wait option, it doesn't
# seem to be implemented.
check_card() {
cardfound=0
cardtmp=$(/usr/bin/opensc-tool -n 2>&1)
if [ $? == 0 ] ; then
cardfound=1
fi
}
wait_card() {
check_card
if [ $cardfound == 0 ] ; then
echo "Waiting for Smart Card..." >&2
tries=0
while [ $cardfound == 0 -a $tries -lt 60 ] ; do
sleep 1
check_card
tries=$(($tries + 1))
done
if [ $cardfound == 0 ] ; then
echo 'Failed to find Smart Card card!' >&2
exit 1
fi
fi
}
wait_card
if [ -p /dev/.initramfs/usplash_outfifo ] && [ -x /sbin/usplash_write ]; then
# Get pin number from usplash
/sbin/usplash_write "INPUTQUIET Enter pin for $crypttarget ($cryptsource): "
/usr/bin/pkcs15-crypt --decipher --input $1 --pkcs1 --raw --pin "$(cat /dev/.initramfs/usplash_outfifo)"
else
# Get pin number from console
/usr/bin/pkcs15-crypt --decipher --input $1 --pkcs1 --raw < /dev/console 2> /dev/console
fi
exit $?
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