#!/bin/sh
set -e

# Normalise the timestamp of the kernel for d-i and the initrd
# Assume that the kernel version for the installer is the same as for the live system

# Don't run if the kernel is not where it is expected
if [ ! -e live/vmlinuz ];
then
	echo "W: $(basename $0) Reproducible hook skipped: could not find the reference kernel image"
	exit 0
fi

# Don't run if the unmkinitramfs is not installed
if [ ! -e /usr/bin/unmkinitramfs ];
then
	echo "W: $(basename $0) Reproducible hook skipped: could not find unmkinitramfs"
	exit 0
fi

_HOOK_WAS_NEEDED=no

if [ -e install/vmlinuz ]
then
	touch --reference=live/vmlinuz install/vmlinuz
	unmkinitramfs install/initrd.gz tmp.out
	touch -d@$(find tmp.out -type f -printf "%T@\n" | sort | tail -n 1 | cut -d. -f1) install/initrd.gz
	rm -fr tmp.out
	_HOOK_WAS_NEEDED=yes
fi
if [ -e install/gtk/vmlinuz ]
then
	touch --reference=live/vmlinuz install/gtk/vmlinuz
	unmkinitramfs install/gtk/initrd.gz tmp.out
	touch -d@$(find tmp.out -type f -printf "%T@\n" | sort | tail -n 1 | cut -d. -f1) install/gtk/initrd.gz
	rm -fr tmp.out
	_HOOK_WAS_NEEDED=yes
fi

if [ "${_HOOK_WAS_NEEDED}" = "yes" ];
then
	echo "P: $(basename $0) Reproducible hook has been applied"
fi