#!/bin/sh

set -e

PREREQ="cryptroot"

prereqs()
{
    echo "$PREREQ"
}

case "$1" in
    prereqs)
        prereqs
        exit 0
        ;;
esac

. /usr/share/initramfs-tools/hook-functions
. /lib/cryptsetup/functions

if [ ! -x "$DESTDIR/lib/cryptsetup/scripts/decrypt_opensc" ] || [ ! -f "$TABFILE" ]; then
    exit 0
fi

# Hooks for loading smartcard reading software into the initramfs
copy_keys() {
    crypttab_parse_options
    if [ "${CRYPTTAB_OPTION_keyscript-}" = "/lib/cryptsetup/scripts/decrypt_opensc" ]; then
        if [ -f "$CRYPTTAB_KEY" ]; then
            [ -f "$DESTDIR$CRYPTTAB_KEY" ] || copy_file keyfile "$CRYPTTAB_KEY" || RV=$?
        else
            cryptsetup_message "ERROR: Target $CRYPTTAB_NAME has a non-existing key file $CRYPTTAB_KEY"
            RV=1
        fi
    fi
}

RV=0
crypttab_foreach_entry copy_keys

# Install directories needed by smartcard reading daemon, command, and
# key-script
mkdir -p -- "$DESTDIR/etc/opensc" "$DESTDIR/usr/lib/pcsc" "$DESTDIR/var/run" "$DESTDIR/tmp"

# Install pcscd daemon, drivers, conf file, and include libgcc as well since
# pcscd utilizes pthread_cancel
copy_exec /usr/sbin/pcscd
LIBC_DIR="$(ldd /usr/sbin/pcscd | sed -nr 's#.* => (/lib.*)/libc\.so\.[0-9.-]+ \(0x[[:xdigit:]]+\)$#\1#p')"
find -L "$LIBC_DIR" "/usr$LIBC_DIR" -maxdepth 1 \( -name 'libgcc_s.*' -o -name 'libusb-*.so*' -o -name 'libpcsclite.so*' \) -type f | while read so; do
    copy_exec "$so"
done

cp -rt "$DESTDIR/usr/lib" /usr/lib/pcsc
cp -t "$DESTDIR/etc" /etc/reader.conf || true
cp -t "$DESTDIR/etc" /etc/libccid_Info.plist

# Install opensc commands and conf file
copy_exec /usr/bin/opensc-tool
copy_exec /usr/bin/pkcs15-crypt
cp -t "$DESTDIR/etc/opensc" /etc/opensc/opensc.conf

exit $RV