#!/bin/sh

## live-build(7) - System Build Scripts
## Copyright (C) 2016-2020 The Debian Live team
## Copyright (C) 2006-2015 Daniel Baumann <mail@daniel-baumann.ch>
##
## This program comes with ABSOLUTELY NO WARRANTY; for details see COPYING.
## This is free software, and you are welcome to redistribute it
## under certain conditions; see COPYING for details.


set -e

# Including common functions
[ -e "${LIVE_BUILD}/scripts/build.sh" ] && . "${LIVE_BUILD}/scripts/build.sh" || . /usr/lib/live/build.sh

# Setting static variables
DESCRIPTION="Manage /sbin/dpkg"
USAGE="${PROGRAM} {install|remove} [--force]"

# Processing arguments and configuration files
Init_config_data "${@}"

_ACTION="${1}"
shift

# Requiring stage file
Require_stagefiles config bootstrap

case "${_ACTION}" in
	install)
		Echo_message "Configuring file /sbin/start-stop-daemon"

		# Checking stage file
		Check_stagefile

		# Acquire lock file
		Acquire_lockfile

		# Create custom start-stop-daemon program
		# begin-remove-after: released:forky
		# In the bookworm to trixie upgrade, dpkg moves
		# start-stop-daemon from /sbin to /usr/sbin. Duplicate the
		# diversion to cover both. DEP17 P3 M18
		if Chroot chroot dpkg -S /sbin/start-stop-daemon >/dev/null 2>&1; then
			Chroot chroot dpkg-divert --rename --quiet --add --divert /sbin/start-stop-daemon.distrib.usr-is-merged /sbin/start-stop-daemon
			Chroot chroot dpkg-divert --no-rename --quiet --add /usr/sbin/start-stop-daemon
		else
		# end-remove-after: released:forky
		Chroot chroot dpkg-divert --rename --quiet --add /usr/sbin/start-stop-daemon
		# begin-remove-after: released:forky
			Chroot chroot dpkg-divert --no-rename --quiet --add --divert /sbin/start-stop-daemon.distrib.usr-is-merged /sbin/start-stop-daemon
		fi
		# end-remove-after
		ln -fs /bin/true chroot/usr/sbin/start-stop-daemon

		# Disable dpkg syncing

cat > chroot/etc/dpkg/dpkg.cfg.d/live-build << EOF
force-unsafe-io
EOF

		# Manual hacks for special packages

		# Generic live-build handle for other live packages to act upon
		touch chroot/.live-build

		# flash-kernel
		Chroot chroot dpkg-divert --rename --quiet --add /usr/sbin/flash-kernel
		ln -fs /bin/true chroot/usr/sbin/flash-kernel

		# Creating stage file
		Create_stagefile
		;;

	remove)
		Echo_message "Deconfiguring file /sbin/start-stop-daemon"

		# Checking stage file
		Ensure_stagefile_exists

		# Acquire lock file
		Acquire_lockfile

		# Manual hacks for special packages

		# Generic live-build handle
		rm -f chroot/.live-build

		# flash-kernel
		rm -f chroot/usr/sbin/flash-kernel
		Chroot chroot dpkg-divert --rename --quiet --remove /usr/sbin/flash-kernel

		# Remove custom start-stop-daemon program
		rm -f chroot/usr/sbin/start-stop-daemon
		# begin-remove-after: released:forky
		Chroot chroot dpkg-divert --rename --quiet --remove /sbin/start-stop-daemon
		# end-remove-after
		Chroot chroot dpkg-divert --rename --quiet --remove /usr/sbin/start-stop-daemon

		# Remove dpkg sync configuration
		rm -f chroot/etc/dpkg/dpkg.cfg.d/live-build

		# Removing stage file
		Remove_stagefile
		;;

	*)
		Echo_error "Invalid action parameter: '${_ACTION}'"
		Usage --fail
		;;
esac
