#!/bin/bash
# User-configurables
rdir=~/museum
repo=$rdir/routeros-backups.fossil
bdir=~/routeros-backups
# Make backup checkout directory if it doesn't exist already.
mkdir -p $bdir
cd $bdir
# Prepare Fossil repository and/or checkout as necessary.
if ! [ -r .fslckout ]
then
mkdir -p $rdir
if ! [ -r $repo ]
then
fossil init \
--project-name routeros-backups \
--project-desc "RouterOS configuration backups" \
$repo
fi
fossil open --force $repo
if ! [ -d .fossil-settings ]
then
# Tell Fossil not to squawk about binary data in the binary
# backup files nor CRLFs in the text backup files.
mkdir .fossil-settings
echo '*/*.rsc' > .fossil-settings/crlf-glob
echo '*/*.bin' > .fossil-settings/binary-glob
fossil add .fossil-settings
fi
fi
# Default usage: pass all hostnames gleaned from subdirectories in
# Fossil checkout to ourself.
if [ -z "$1" ] ; then exec $0 * ; fi
# Host name passed in by above or interactively from the command line.
for host in "$@"
do
bf=$host/config.bin
ef=$host/export.rsc
if ! [ -d $host ]
then
# We were passed a hostname without one or more local existing
# backups, so set that up. This simplifies the first-run case
# by letting you pass the names of existing but as-yet unmanaged
# hosts.
mkdir $host
touch $bf $ef
fossil add $bf $ef
initial=1
fi
if [ -w $bf ] && [ -w $ef ]
then
# Prior backups exist — i.e. not a sidecar dir holding who knows
# what — so pull fresh ones. Toss changes deemed trivial.
ssh $host export show-sensitive terse > $host/export.rsc &&
ssh $host '/system backup save' &&
fn=$(ssh $host '/file print detail without-paging' |
grep 'name=".*" type="backup"' |
tail -1 |
cut -f2 -d\") &&
test -n "$fn" && scp $host:$fn $host/config.bin
if [ -z "$initial" ] &&
! fossil diff --command diff $host/export.rsc |
grep '^[<>]' |
grep -qv ' by RouterOS '
then
fossil revert $host/config.bin $host/export.rsc
ssh $host "/file remove $fn"
fi
fi
done
if [ -n "$initial" ]
then
# We created one or more hostname subdirs and initial backup files
# above, so unconditionally commit those initial versions now.
fossil ci -m "initial backup for $@"
else
# Normal case: commit only after user has a chance to look at the
# diffs of the text backups.
filter=cat
if [ -n "$SSH_CONNECTION" ]
then
# We're being run over an SSH conn. Since chances are not good
# that X11 forwarding is being done, or if it is that the gdiff
# implementation isn't X-based, use console diff. Run it thru
# a pager to make it block.
diffcmd=diff
if [ -n "$PAGER" ] ; then filter=$PAGER ; else filter=less ; fi
elif [ "$(fossil set gdiff-command)" != "gdiff-command" ]
then
# The user's set a graphical diff command, so use it.
diffcmd=gdiff
else
# Fall back to the browser-based diff feature added in Fossil
# 2.17. Last because this won't block like the other options,
# so you won't have a chance to abort the commit by sending
# Ctrl-C to this script.
diffcmd="diff -b"
fi
# Commit the changes unless the diff fails.
if fossil $diffcmd */*.rsc | $filter
then
fossil ci
else
fossil revert
fi
fi