#!/bin/sh
#
-# Version 0.2
-#
# etcdiff (deb-etcdiff?) shows how your current /etc dir
-# diverges from the debian distribution standard one.
+# diverges from the debian default one.
#
-# Copyright (C) 2008,2009 Antonio Ospite <ospite@studenti.unina.it>
+# Copyright (C) 2008,2009,2010 Antonio Ospite <ospite@studenti.unina.it>
# License: GPLv2 or later
-
-
-# TODO:
-# Add per package etcdiff, using dpkg -L
-# Add per distro etcdiff using dpkg --get-selections
#
-# Note that the first method can't consider files not in original packages,
-# unless some smart trick is used (new files could be in same /etc subdir of
-# the provided configuration files)
-#
-# The second one could even speedup the whole etcdiffing by recreating an etc
-# dir as per packages defaults, and do one big diff.
-
-set -x
+#set -x
+#set -e
#PROMPT_RM=-i
DEBIANMIRROR="http://ftp.it.debian.org/debian"
-rm $PROMPT_RM -rf temp && mkdir temp
-rm $PROMPT_RM -rf archives && mkdir archives
-rm $PROMPT_RM -rf conf && mkdir conf
-
-# Examples of file query
-
-# by list
-#FILES="/etc/sysctl.conf /etc/init.d/procps /etc/passwd-"
-
-# by command
-FILES=$(find /etc/apache2 -type f $USERMODE | grep -v '.dpkg-')
-
-# by command, public files, limited
-#USERMODE="-perm /o+r"
-#MAXDEPTH="-maxdepth 1"
-#FILES=$(find /etc/ $MAXDEPTH -type f $USERMODE | grep -v '.dpkg-')
-
-# by package name
-#FILES=$(dpkg -L apache2.2-common | grep '^/etc')
-
-for file in ${FILES};
-do
- if [ ! -e $file ];
- then
- echo "ERROR, file $file does not exist."
- exit 1;
- fi
- echo "-> $file"
-
- # Find out which installed package provides the config file
- PACKAGE=$(dpkg-query -S "$file" | cut -d ':' -f 1 | uniq 2> /dev/null)
-
- # Copy the whole file if it is not provided by default
- if [ "x$PACKAGE" == "x" ];
- then
- DESTDIR=`dirname $file`
- # strip trailing slash
- [ ${DESTDIR:0:1} == '/' ] && DESTDIR=${DESTDIR:1}
-
- # RECREATE the destination dir
- [ -d conf/$DESTDIR ] || mkdir -p conf/$DESTDIR
- cp "$file" conf/$DESTDIR
-
- continue
- fi
-
- # Get the package from the repository and diff
-
- FILENAME=$(apt-cache show $PACKAGE | grep ^Filename | cut -d ' ' -f 2-)
- ARCHIVE=$(basename $FILENAME)
-
- if [ ! -f archives/$ARCHIVE ];
- then
- ( cd archives &&
- wget -q -nc -c $DEBIANMIRROR/$FILENAME &&
- mkdir ../temp/$PACKAGE
- dpkg -x $ARCHIVE ../temp/$PACKAGE
- )
- fi
-
- # Check for file existence before diffing, the file is not provided in
- # package archive, but it could have been generated by package installation
- # scripts
- if [ ! -f temp/$PACKAGE/$file ];
- then
- echo "Warning: '$file' can't be found in package!"
- fi
-
-
- # TODO: diff only once and check filesize
- TMPDIFF_FILE=`mktemp /tmp/etcdiff.XXXXXXXXXX`
- diff -u temp/$PACKAGE/$file $file > $TMPDIFF_FILE
- if [ `stat -c '%s' $TMPDIFF_FILE` -eq 0 ];
- then
- echo "$file: not changed"
- rm -f $TMPDIFF_FILE
- else
- DESTDIR=`dirname $file`
- # strip trailing slash
- [ ${DESTDIR:0:1} == '/' ] && DESTDIR=${DESTDIR:1}
-
- # RECREATE the destination dir
- [ -d conf/$DESTDIR ] || mkdir -p conf/$DESTDIR
- cp $TMPDIFF_FILE conf/$DESTDIR/$(basename $file).patch
-
- rm -f $TMPDIFF_FILE
- fi
-
-done
+BASEDIR=$(dirname $0)
+TEMPDIR=${BASEDIR}/temp
+CACHEDIR=${BASEDIR}/cache
+REPORTDIR=${BASEDIR}/reports
+
+usage()
+{
+ echo "usage: $0 <file|package|system> [<file name>|<package name>]
+
+etcdiff shows how your /etc dir differs from the debian default one
+
+etcdiff by explicit file list:
+ FILES='/etc/sysctl.conf /etc/updatedb.conf'
+ for file in \$FILES;
+ do
+ $0 file \$file
+ done
+
+etcdiff bycommand generated file list
+ FILES=\$(find /etc/apache2 -type f -perm /o+r | grep -v '.dpkg-')
+ for file in \$FILES;
+ do
+ $0 file \$file
+ done
+
+etcdiff by package name
+ $0 package cherokee
+ $0 package mlocate
+ $0 package apache2-doc
+ $0 package apache2.2-common
+ $0 package libapache2-mod-php5
+ $0 package hostapd
+
+etcdiff the whole /etc system directory
+ $0 system
+"
+}
+
+rm -rf $PROMPT_RM $TEMPDIR && mkdir $TEMPDIR
+rm -rf $PROMPT_RM $CACHEDIR && mkdir $CACHEDIR
+rm -rf $PROMPT_RM $REPORTDIR && mkdir $REPORTDIR
+
+. $BASEDIR/etcdiff.include
+
+case $1 in
+ file)
+ etcdiff_by_file $2
+ ;;
+ package)
+ etcdiff_by_package $2
+ ;;
+ system)
+ etcdiff_system
+ ;;
+ *)
+ usage
+ ;;
+esac
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