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#!/bin/sh

# lh_source_checksums(1) - create source checksums
# Copyright (C) 2006-2010 Daniel Baumann <daniel@debian.org>
#
# live-helper 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
. "${LH_BASE:-/usr/share/live-helper}"/scripts/build.sh

# Setting static variables
DESCRIPTION="$(Echo 'create source checksums')"
HELP=""
USAGE="${PROGRAM} [--force]"

Arguments "${@}"

# Reading configuration files
Read_conffiles config/all config/common config/bootstrap config/chroot config/binary config/source
Set_defaults

if [ "${LH_CHECKSUMS}" = "none" ] || [ "${LH_SOURCE}" != "true" ]
then
	exit 0
fi

# Requiring stage file
Require_stagefile .stage/config .stage/source_debian

# Checking stage file
Check_stagefile .stage/source_checksums

# Checking lock file
Check_lockfile .lock

# Creating lock file
Create_lockfile .lock

for DIRECTORY in source/debian source/debian-live
do
	if [ ! -d ${DIRECTORY} ]
	then
		continue
	fi

	for CHECKSUM in ${LH_CHECKSUMS}
	do
		Echo_message "Begin creating source ${CHECKSUM}sum.txt..."

		# Remove old checksums
		if [ -f ${DIRECTORY}/${CHECKSUM}sum.txt ]
		then
			rm -f ${DIRECTORY}/${CHECKSUM}sum.txt
		fi

		# Calculating checksums
		cd ${DIRECTORY}
		find . -type f \
			\! -path './md5sum.txt' \
			\! -path './sha1sum.txt' \
			\! -path './sha256sum.txt' \
		-print0 | sort -z | xargs -0 ${CHECKSUM}sum > ../${CHECKSUM}sum.txt

cat > ${CHECKSUM}sum.txt << EOF
This file contains the list of ${CHECKSUM} checksums of all files on this medium.

You can verify them automatically with the 'integrity-check' boot parameter,
or, manually with: '${CHECKSUM}sum -c ${CHECKSUM}sum.txt'.


EOF

		cat ../${CHECKSUM}sum.txt >> ${CHECKSUM}sum.txt
		rm -f ../${CHECKSUM}sum.txt

		cd "${OLDPWD}"
	done

	# File list
	cd ${DIRECTORY}
	find . | sed -e 's|^.||g' | grep "^/" | sort > ../../$(echo ${DIRECTORY} | sed -e 's|/|.|').list
	cd "${OLDPWD}"
done

# Creating stage file
Create_stagefile .stage/source_checksums