#!/bin/sh
#
#  Copyright (c) 02005 sense.lab <senselab@systemausfall.org>
#
#  License:  This script is distributed under the terms of version 2
#            of the GNU GPL. See the LICENSE file included with the package.
#
# $Id$
#
# this script is part of the boot process of a developer's cryptobox
#
# it should really NEVER be found on a release CD
# 
#
# NOT currently called automatically in deb-live version. You can
# change this for your builds by creating a symbolic link
# config/chroot_local-includes/etc/rc3.d/S90cnas-devel-features ==> 
# ==> /usr/share/cryptonas-live/devel-features.sh
#
# called by:
#	- /etc/init.d/S90cnas-devel-features
#

set -eu

# read the default setting file, if it exists
[ -e /etc/default/cryptobox ] && . /etc/default/cryptobox

MIRROR_DIR=/tmp/mirror
MIRROR_ORIG_DIR=/tmp/mirror.orig
WRITE_DIRS="/var/www /usr/share/cryptobox-server /usr/share/cryptonas-live"

ACTION="--help"
[ $# -gt 0 ] && ACTION="$1"

case "$ACTION" in
	start )
		# copy cryptobox files to tmpfs
		for a in $WRITE_DIRS
			do	mkdir -p "$MIRROR_DIR/$a"
				cp -a "$a/." "$MIRROR_DIR/$a"
				mount --bind "$MIRROR_DIR/$a" "$a"
		  done
		$0 set_diff_base

		# cryptobox-server needs to be restarted to reopen its files
		invoke-rc.d cryptobox-server restart

		# start ssh daemon
		[ -x /etc/init.d/ssh ] && /etc/init.d/ssh start
		;;
	set_diff_base )
		# the present content of the tmpfs mirror get copied to
		# MIRROR_ORIG_DIR for later diffs
		# whenever you merged a diff, you should call this function
		[ -e "$MIRROR_ORIG_DIR" ] && rm -rf "$MIRROR_ORIG_DIR"
		cp -a "$MIRROR_DIR" "$MIRROR_ORIG_DIR"
		;;
	diff )
		cd "`dirname \"$MIRROR_ORIG_DIR\"`" 
		# diff and remove "binary files differ"-warnings (vi-swap-files)
		# ignore generated reports
		# ignore cryptobox.pl and index.html, as those are the same as
		# /var/www/cryptobox (symbilic links)
		# replace the link name (/var/www/cryptobox) by its destination
		# UGLY!
		diff -ruN --exclude=report --exclude=cryptobox.pl --exclude=index.html "`basename \"$MIRROR_ORIG_DIR\"`" "`basename \"$MIRROR_DIR\"`" | grep -v "^Binary files" | sed 's#/var/www/cryptobox\t#/var/www/cgi-bin/cryptobox.pl\t#'
		;;
	stop )
		[ -x /etc/init.d/ssh ] && /etc/init.d/ssh stop
#TODO: devel-features.sh stop appears to be broken on deb-live version
		for a in $WRITE_DIRS
			do	umount "$MIRROR_DIR/$a" "$a"
		  done
		rm -rf "$MIRROR_DIR"
		;;
	restart )
		$0 stop
		$0 start
		;;
	* )
		echo "Syntax: `basename $0` { start | stop | restart }"
		;;
  esac