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# -*- mode: sh; sh-basic-offset: 3; indent-tabs-mode: nil; -*-
#
# duplicity script for backupninja
# requires duplicity
#
getconf options
getconf testconnect yes
getconf nicelevel 0
setsection gpg
getconf password
getconf sign no
getconf encryptkey
getconf signkey
setsection source
getconf include
getconf vsnames all
getconf vsinclude
getconf exclude
setsection dest
getconf incremental yes
getconf keep 60
getconf sshoptions
getconf bandwidthlimit 0
getconf desthost
getconf destdir
getconf destuser
destdir=${destdir%/}
[ "$destdir" != "" ] || fatal "Destination directory not set"
[ "$include" != "" ] || fatal "No source includes specified"
### vservers stuff ###
# If vservers are configured, check that the ones listed in $vsnames do exist.
local usevserver=no
if [ $vservers_are_available = yes ]; then
if [ "$vsnames" = all ]; then
vsnames="$found_vservers"
else
if ! vservers_exist "$vsnames" ; then
fatal "At least one of the vservers listed in vsnames ($vsnames) does not exist."
fi
fi
if [ -n "$vsinclude" ]; then
info "Using vservers '$vsnames'"
usevserver=yes
fi
else
[ -z "$vsinclude" ] || warning 'vservers support disabled in backupninja.conf, vsincludes configuration lines will be ignored'
fi
### see if we can login ###
if [ "$testconnect" == "yes" ]; then
debug "ssh $sshoptions -o PasswordAuthentication=no $desthost -l $destuser 'echo -n 1'"
if [ ! $test ]; then
result=`ssh $sshoptions -o PasswordAuthentication=no $desthost -l $destuser 'echo -n 1'`
if [ "$result" != "1" ]; then
fatal "Can't connect to $desthost as $destuser."
else
debug "Connected to $desthost as $destuser successfully"
fi
fi
fi
### COMMAND-LINE MANGLING ###
# duplicity >= 0.4.2 needs --sftp-command (NB: sftp does not support the -l option)
duplicity_version="`duplicity --version | awk '{print $2}'`"
duplicity_major="`echo $duplicity_version | awk -F '.' '{print $1}'`"
duplicity_minor="`echo $duplicity_version | awk -F '.' '{print $2}'`"
duplicity_sub="`echo $duplicity_version | awk -F '.' '{print $3}'`"
if [ "$duplicity_major" -ge 0 -a "$duplicity_minor" -ge 4 -a "$duplicity_sub" -ge 2 ]; then
sftpoptions="$sshoptions"
fi
scpoptions="$sshoptions"
[ "$bandwidthlimit" == 0 ] || scpoptions="$scpoptions -l $bandwidthlimit"
if [ -z "$sftpoptions" ]; then
execstr="$options --no-print-statistics --scp-command 'scp $scpoptions' --ssh-command 'ssh $sshoptions' "
else
execstr="$options --no-print-statistics --scp-command 'scp $scpoptions' --sftp-command 'sftp $sftpoptions' --ssh-command 'ssh $sshoptions' "
fi
# deal with symmetric or asymmetric (public/private key pair) encryption
if [ -n "$encryptkey" ]; then
execstr="${execstr}--encrypt-key $encryptkey "
debug "Data will be encrypted with the GnuPG key $encryptkey."
else
debug "Data will be encrypted using symmetric encryption."
fi
# deal with data signing
if [ "$sign" == yes ]; then
# duplicity is not able to sign data when using symmetric encryption
[ -n "$encryptkey" ] || fatal "The encryptkey option must be set when signing."
# if needed, initialize signkey to a value that is not empty (checked above)
[ -n "$signkey" ] || signkey="$encryptkey"
execstr="${execstr}--sign-key $signkey "
debug "Data will be signed will the GnuPG key $signkey."
else
debug "Data won't be signed."
fi
# deal with GnuPG passphrase
[ -n "$password" ] || fatal "The password option must be set."
if [ "$keep" != "yes" ]; then
if [ "`echo $keep | tr -d 0-9`" == "" ]; then
keep="${keep}D"
fi
execstr="${execstr}--remove-older-than $keep "
fi
if [ "$incremental" == "no" ]; then
execstr="${execstr}--full "
fi
execstr_serverpart="scp://$destuser@$desthost/$destdir"
execstr_clientpart="/"
### SOURCE ###
set -o noglob
symlinks_warning="Maybe you have mixed symlinks and '*' in this statement, which is not supported."
# excludes
for i in $exclude; do
str="${i//__star__/*}"
str=`readlink -f $str`
if [ -n "$str" ]; then
execstr="${execstr}--exclude '$str' "
else
warning "exclude statement ${i//__star__/*} will be ignored. $symlinks_warning"
fi
done
# includes
for i in $include; do
[ "$i" != "/" ] || fatal "Sorry, you cannot use 'include = /'"
str="${i//__star__/*}"
str=`readlink -f $str`
if [ -n "$str" ]; then
execstr="${execstr}--include '$str' "
else
warning "include statement ${i//__star__/*} will be ignored. $symlinks_warning"
fi
done
# vsincludes
if [ $usevserver = yes ]; then
for vserver in $vsnames; do
for vi in $vsinclude; do
str="${vi//__star__/*}"
str=`readlink -f $VROOTDIR/$vserver$str`
if [ -n "$str" ]; then
execstr="${execstr}--include '$str' "
else
warning "vsinclude statement ${vi//__star__/*} will be ignored for VServer $vserver. $symlinks_warning"
fi
done
done
fi
set +o noglob
### EXECUTE ###
execstr=${execstr//\\*/\\\\\\*}
debug "duplicity $execstr --exclude '**' / $execstr_serverpart"
if [ ! $test ]; then
export PASSPHRASE=$password
output=`nice -n $nicelevel \
su -c \
"duplicity $execstr --exclude '**' / $execstr_serverpart 2>&1"`
code=$?
if [ $code -eq 0 ]; then
debug $output
info "Duplicity finished successfully."
else
debug $output
fatal "Duplicity failed."
fi
fi
return 0
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