#!/bin/bash
#
# etcupdate for slackware
#
# BEWARE THIS SCRIPT ASSUMES ANY CUSTOM CONFIG HAS A .dist FILE FOR IT
#
# special cases:
#
# /etc/rc.d/rc.inet1.new -- should not be executable
# /etc/logrotate.d/syslog.new -- .dist should not remain there

date=`date +%s`

[[ -z `grep ^tabooext /etc/logrotate.conf` ]] && echo define tabooext + .dist in /etc/logrotate.conf first && exit 1

echo
echo -n indexing ...
updatedb && echo done
echo

tmp=`locate \.new | grep new$ | grep -v sbopkg | grep -v slackbuilds | grep -v /var/lib/filetraq/`
[[ -z $tmp ]] && echo -e all good \\n && exit 1

for f in $tmp; do
	# CUSTOM THERE IS - CHECK THE CHANGES
	# compare new with dist
	# -- override if identical
	# -- otherwise show diff
	if [[ -f ${f%\.new}.dist ]]; then
		difftmp=`diff -bu ${f%\.new}.dist $f`
		[[ -z $difftmp ]] && mv -f $f ${f%\.new}.dist || \
			echo -e defaults have changed \\n \
				\\tdiff -bu ${f%\.new}.dist $f \\n \
				\\tmv -f $f ${f%\.new}.dist \\n
		unset difftmp

	# NOTHING SPECIAL - WE DO NOT CARE ESP. IF THERE IS NO CHANGE
	# compare new with current
	# -- override if identical
	# -- otherwise backup and override
	elif [[ -f ${f%\.new} ]]; then
		difftmp=`diff -bu ${f%\.new} $f`
		if [[ -z $difftmp ]]; then
			mv -f $f ${f%\.new}
		else
			cp -pi ${f%\.new} ${f%\.new}.old.$date
			mv -f $f ${f%\.new} && \
				echo -e file updated - no .dist file \\n \
					\\tdiff -bu ${f%\.new}.old.$date ${f%\.new} \\n \
					\\trm -f ${f%\.new}.old.$date \\n
		fi
		unset difftmp
	elif [[ -d $f/ ]]; then
		# happens with filetraq e.g. /var/lib/filetraq/etc/sshguard.conf
		echo warning: $f/ is a folder not a file
	else
		echo error: ${f%\.new} does not exist
	fi
done; unset f tmp
echo

echo all done

# TODO chmod -x on rc.d/ new/dist scripts?