From abd08d10c37904bfff0c8c53f225380c2bd37d03 Mon Sep 17 00:00:00 2001
From: Martin Pitt <martin.pitt@ubuntu.com>
Date: Wed, 2 Jul 2014 16:07:25 +0200
Subject: [PATCH] move backup to duplicity

---
 backup         | 68 +++++++++++++++++++-------------------------------
 postinst-setup |  8 +-----
 preinst-backup |  7 ------
 3 files changed, 26 insertions(+), 57 deletions(-)

diff --git a/backup b/backup
index db4faaa..0518410 100755
--- a/backup
+++ b/backup
@@ -1,46 +1,28 @@
-#!/bin/sh -e
-
-# call rsnapshot daily/weekly/monthly regularly
-# this should be called from cron very often (several times a day) to not miss
-# a cycle when the machine is powered down for extended times.
-#
-# Author: Martin Pitt <martin@piware.de>
-# License: Public Domain
-
-backupdir=`grep ^snapshot_root ~/.rsnapshotrc | awk '{print $2}'`
-
-now=`date +%s`
-
-get_age() {
-    if [ -e $backupdir/$1 ]; then
-        age=$(($now - `stat -c %Y $backupdir/$1`))
-    else
-        unset age
+#!/bin/sh
+set -eu
+cd $HOME
+LOG=.cache/duplicity/log
+
+# do backup every day
+if [ -e "$LOG" ] && [ $(( `date +%s` - `stat -c %Y $LOG` )) -lt 86300 ]; then
+    exit 0
+fi
+
+# figure out $DISPLAY when running from cron
+if [ -z "${DISPLAY:-}" ]; then
+    socket="/run/user/`id -u`/X11-display"
+    if [ -L "$socket" ]; then
+        socket=$(readlink "$socket")
+        export DISPLAY=:${socket##*/X}
     fi
-}
-
-# abort if last backup was less than a day ago
-get_age daily.0
-[ -n "$age" ] && [ $age -lt 86300 ] && exit 0
-
-print '------------1---------------'
-# monthly backup if last monthly is older than a month (if it doesn't exist,
-# check oldest weekly)
-get_age monthly.0
-[ -n "$age" ] || get_age weekly.3
-[ -n "$age" ] && [ $age -ge 2591900 ] && mode=monthly
-
-# weekly backup if last weekly is older than a week (if it doesn't exist,
-# check oldest daily)
-get_age weekly.0
-[ -n "$age" ] || get_age daily.6
-[ -n "$age" ] && [ $age -ge 604700 ] && mode=weekly
+fi
 
-# default to daily
-[ -n "$mode" ] || mode=daily
+if ! ip route | grep -q '^default.*wlan'; then
+    notify-send "Backup skipped, not on WLAN"
+    exit 0
+fi
 
-# call rsnapshot
-echo mode: $mode
-#notify-send "$mode backup started" || :
-rsnapshot -c ~/.rsnapshotrc $mode
-#notify-send "$mode backup finished" || :
+notify-send "Backup started"
+mkdir -p $(dirname $LOG)
+env PASSPHRASE="$(cat ~/.backup-passphrase)" duplicity --full-if-older-than 1M --exclude-globbing-filelist .duplicity-ignore . rsync://piware.de/backup/donald >> $LOG || { notify-send "BACKUP FAILED!"; exit 1; }
+notify-send "Backup finished successfully"
diff --git a/postinst-setup b/postinst-setup
index 5391e89..86eb843 100755
--- a/postinst-setup
+++ b/postinst-setup
@@ -1,11 +1,5 @@
 #!/bin/sh -e
 
-# move backup to /var
-if [ -d /home/martin/backup ] && [ ! -d /var/backups/martin ]; then
-    cp -a /home/martin/backup /var/backups/martin
-    rm -rf /home/martin/backup
-fi
-
 # need bzr and postfix for the setup below
 DEBIAN_FRONTEND=noninteractive apt-get -y install --no-install-recommends postfix openssh-server bzr python-paramiko apt-cacher-ng
 
@@ -50,7 +44,7 @@ apt-get purge -y --auto-remove hplip hplip-data printer-driver-hpcups brltty blu
 killall apt-get || true
 apt-get update
 
-DEBIAN_FRONTEND=noninteractive apt-get install --no-install-recommends -y --force-yes vim patchutils offlineimap diffstat gtimelog devhelp python3-doc manpages-dev weechat weechat-plugins weechat-scripts listadmin quilt mutt editmoin lintian ubuntu-dev-tools dput easytag rsnapshot texlive-lang-german texlive-latex-extra powertop qemu-kvm qemu-utils bzr-buildpackage git build-essential fakeroot devscripts libglib2.0-doc libgtk-3-doc git-buildpackage d-feet wmctrl libnotify-bin svn-buildpackage pastebinit lptools openvpn pdfjam sbuild schroot exiv2 phablet-tools gstreamer1.0-plugins-ugly flashplugin-installer valgrind calibre autopkgtest
+DEBIAN_FRONTEND=noninteractive apt-get install --no-install-recommends -y --force-yes vim patchutils offlineimap diffstat gtimelog devhelp python3-doc manpages-dev weechat weechat-plugins weechat-scripts listadmin quilt mutt editmoin lintian ubuntu-dev-tools dput easytag texlive-lang-german texlive-latex-extra powertop qemu-kvm qemu-utils bzr-buildpackage git build-essential fakeroot devscripts libglib2.0-doc libgtk-3-doc git-buildpackage d-feet wmctrl libnotify-bin svn-buildpackage pastebinit lptools openvpn pdfjam sbuild schroot exiv2 phablet-tools gstreamer1.0-plugins-ugly flashplugin-installer valgrind calibre autopkgtest
 apt-get install lxc
 
 # ccache
diff --git a/preinst-backup b/preinst-backup
index c19559d..eef4f5f 100755
--- a/preinst-backup
+++ b/preinst-backup
@@ -7,10 +7,3 @@ fi
 
 # push /etc/
 (cd /etc; HOME=/home/martin bzr push)
-
-# copy backup to ~
-if [ -d /home/martin/backup ]; then
-    echo "/home/martin/backup exists already, aborting" >&2
-    exit 1
-fi
-[ ! -d /var/backups/martin/ ] || cp -a /var/backups/martin/ /home/martin/backup
-- 
2.39.2