Gets .kpxe and .efi boot endpoints of netboot.xyz, for use with dnsmasq.

get_netboot_xyz.sh

#!/bin/sh
USER=dnsmasq:dnsmasq

MIRROR='https://boot.netboot.xyz/ipxe'
KPXE=netboot.xyz.kpxe
UEFI=netboot.xyz.efi
SHA2=netboot.xyz-sha256-checksums.txt

cd "$(dirname $0)"
rm -f "$KPXE" "$UEFI" "$SHA2"

wget "$MIRROR"/"$KPXE"
wget "$MIRROR"/"$UEFI"
wget "$MIRROR"/"$SHA2"

d="$(mktemp -d)"
for f in "$KPXE" "$UEFI"
do
    grep "$f"$ "$SHA2" > "$d"/"$f".sha
    sha256sum -c "$d"/"$f".sha || exit 1
done
rm -rf "$d"

chown "$USER" "$KPXE" "$UEFI" "$SHA2"