From 8036a96b471560341b34f33806870d8e323faf0a Mon Sep 17 00:00:00 2001
From: Jonas Smedegaard <dr@jones.dk>
Date: Wed, 4 Apr 2007 15:26:31 +0000
Subject: Merge savelocaltweaks with localbackupconfig.

---
 localbackupconfig | 125 +++++++++++++++++++++++++++++++++++++++++++-----------
 1 file changed, 100 insertions(+), 25 deletions(-)

(limited to 'localbackupconfig')

diff --git a/localbackupconfig b/localbackupconfig
index ed745a5..43a33ad 100755
--- a/localbackupconfig
+++ b/localbackupconfig
@@ -1,9 +1,9 @@
 #!/bin/sh
 #
 # /usr/local/sbin/localbackupconfig
-# Copyright 2001 Jonas Smedegaard <dr@jones.dk>
+# Copyright 2001-2007 Jonas Smedegaard <dr@jones.dk>
 #
-# $Id: localbackupconfig,v 1.6 2002-10-17 17:20:56 jonas Exp $
+# $Id: localbackupconfig,v 1.7 2007-04-04 15:26:31 jonas Exp $
 #
 # .dpkg-new files appear when refusing to update a conffile on package update
 #
@@ -11,36 +11,111 @@
 #
 # .old files are for customizing when you don't have the original (anymore)
 #
-# .bak is... eh... just in case you felt like using that name now and then...
+# .bak and ~ is in case you forgot to rename properly as .orig or .old!
 #
 
 set -e
 
-FQDN=`hostname -f`
-BACKUPDIR=/var/local/backups/$FQDN
-LOCALCONFIGDIR=/etc/local-$FQDN
+PRG=$(basename "$0")
 
-if [ -e $LOCALCONFIGDIR ]; then
-	mkdir -p $BACKUPDIR/$LOCALCONFIGDIR
-	cp -fa $LOCALCONFIGDIR $BACKUPDIR/`dirname $LOCALCONFIGDIR`/
-fi
-changedfiles=`find /etc -name '*.bak' -o -name '*.old' -o -name '*.orig' -o -name '*.dpkg-new' | sed -e 's,\.\(bak\|old\|orig\|dpkg-new\)$,,' | grep -v "^$LOCALCONFIGDIR" | sort -u`
-for i in $changedfiles; do
-	if [ -e $i ]; then
-		if [ -e $i.dpkg-new ]; then
-			orig="$i.dpkg-new"
-		elif [ -e $i.orig ]; then
-			orig="$i.orig"
-		elif [ -e $i.old ]; then
-			orig="$i.old"
-		elif [ -e $i.bak ]; then
-			orig="$i.bak"
+TEMP="`getopt -s sh -o t:f -l target:,force -n "$PRG" -- "$@"`"
+if [ $? != 0 ] ; then echo >&2 "ERROR: Internal getopt error." ; exit 1 ; fi
+eval set -- "$TEMP"
+
+targetdir=''
+force='no'
+while true ; do
+	case "$1" in
+		-t|--target) targetdir="$2" ; shift 2 ;;
+		-f|--force) force="yes" ; shift ;;
+		--) shift ; break ;;
+		*) echo >&2 "ERROR: Internal error resolving options." ; exit 1 ;;
+	esac
+done
+
+basedir="/etc"
+includefile="/etc/local/localtweaks.include"
+excludefile="/etc/local/localtweaks.exclude"
+extensions=".dpkg-new .orig .old .bak ~"
+
+if [ -n "$targetdir" ]; then
+	targetdirparent="$(dirname "$targetdir")"
+	if ! [ -d "$targetdirparent" ]; then
+		if [ "$force" = "yes" ]; then
+			mkdir -p "$targetdirparent"
 		else
-			echo "What the f... Original for \"$i\" has disappeared?!?"
+			echo >&2 "Error: Parent directory for target directory does not exist."
 			exit 1
 		fi
-		mkdir -p $BACKUPDIR/`dirname $i`
-		cp -fa $i $BACKUPDIR/`dirname $i`/
-		diff -ruN $orig $i > $BACKUPDIR/$i.diff || true
+	elif [ -e "$targetdir" ]; then
+		if [ "$force" = "yes" ]; then
+			rm -rf "$targetdir"
+		else
+			echo >&2 "Error: Target directory already exists."
+			exit 1
+		fi
+	fi
+fi
+
+tempdir="$(mktemp -td localtweaks.XXXXXX)"
+
+for ext in $extensions; do
+	extfiles="$(find $basedir -name "*$ext")"
+	for extfile in $extfiles; do
+		xextfile="${extfile%$ext}"
+		files="$files ${xextfile#$basedir}"
+	done
+done
+
+includes=""
+if [ -d "$(dirname "$includefile")" ] && [ -r "$includefile" ]; then
+	includes="$(cat "$includefile")"
+	for include in $includes; do
+		files="$files ${include#$basedir}"
+	done
+fi
+
+excludes=""
+if [ -d "$(dirname "$excludefile")" ] && [ -r "$excludefile" ]; then
+	xexcludes="$(cat "$excludefile")"
+	for exclude in $xexcludes; do
+		excludes="$excludes ${exclude#$basedir}"
+	done
+fi
+
+# process all files once each
+files="$(for x in $files; do echo "$x"; done | uniq | sort)"
+for file in $files; do
+
+	# file were chosen based on backups - it may not exist itelf
+	[ -s "$basedir/$file" ] || continue
+
+	for exclude in $excludes; do
+		[ "$file" = "$exclude" ] && continue 2
+	done
+
+	ext=""
+	for xext in $extensions; do
+		if [ -e $basedir/$file$xext ]; then
+			ext="$xext"
+			continue
+		fi
+	done
+
+	newdir="$tempdir/$basedir/$(dirname "$file")"
+	mkdir -p "$newdir"
+	cp -af "$basedir/$file" "$newdir"
+
+	# Only diff against existing and non-empty files.
+	if [ -n "$ext" ] && [ -s "$basedir/$file$ext" ]; then
+		diff -ruN "$basedir/$file$ext" "$basedir/$file" > "$tempdir/$basedir/$file.diff" || [ $? -lt 2 ]
+		chown --reference="$basedir/$file" "$tempdir/$basedir/$file.diff"
+		chmod --reference="$basedir/$file" "$tempdir/$basedir/$file.diff"
+		chmod a-x "$tempdir/$basedir/$file.diff"
 	fi
 done
+
+if [ -n "$targetdir" ]; then
+	mv "$tempdir" "$targetdir"
+	rm -rf "$tempdir"
+fi
-- 
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