live-build/scripts/build/lb_binary_checksums

#!/bin/sh

## live-build(7) - System Build Scripts
## Copyright (C) 2006-2012 Daniel Baumann <daniel@debian.org>
##
## live-build 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
. "${LB_BASE:-/usr/share/live/build}"/scripts/build.sh

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

Arguments "${@}"

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

if [ "${LB_CHECKSUMS}" = "none" ] || [ "${LB_BINARY_IMAGES}" = "virtual-hdd" ]
then
	exit 0
fi

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

# Checking stage file
Check_stagefile .stage/binary_checksums

# Checking lock file
Check_lockfile .lock

# Creating lock file
Create_lockfile .lock

for CHECKSUM in ${LB_CHECKSUMS}
do
	Echo_message "Begin creating binary ${CHECKSUM}sum.txt..."

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

	# Calculating checksums
	cd binary
	find . -type f \
		\! -path './isolinux/isolinux.bin' \
		\! -path './boot/boot.bin' \
		\! -path './boot/grub/stage2_eltorito' \
		\! -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 binary
find . | sed -e 's|^.||g' | grep "^/" | sort > ../binary.list
cd "${OLDPWD}"

# Creating stage file
Create_stagefile .stage/binary_checksums