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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
getconf tmpdir
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_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}'`"
# 1. duplicity >= 0.4.2 needs --sftp-command (NB: sftp does not support the -l option)
# 2. duplicity >= 0.4.3 replaces --ssh-command with --ssh-options, which:
# - is passed to scp and sftp commands by duplicity
# - has a special syntax we can not directly feed the command line with
# (e.g. "IdentityFile=/root/.ssh/id_dsa_backupninja Port=2222", without the -o)
# so we don't use it: since this version does not use the ssh command anymore,
# we keep compatibility with our previous config files by passing $sshoptions to
# --scp-command and --sftp-command ourselves
scpoptions="$sshoptions"
[ "$bandwidthlimit" == 0 ] || scpoptions="$scpoptions -l $bandwidthlimit"
execstr="$options --no-print-statistics "
# < 0.4.2 : only uses ssh and scp
if [ "$duplicity_major" -le 0 -a "$duplicity_minor" -le 4 -a "$duplicity_sub" -lt 2 ]; then
execstr="$execstr --scp-command 'scp $scpoptions' --ssh-command 'ssh $sshoptions' "
# >= 0.4.2 : also uses sftp, --sftp-command option is now supported
else
sftpoptions="$sshoptions"
# == 0.4.2 : uses ssh, scp and sftp
if [ "$duplicity_major" -eq 0 -a "$duplicity_minor" -eq 4 -a "$duplicity_sub" -eq 2 ]; then
execstr="$execstr --scp-command 'scp $scpoptions' --sftp-command 'sftp $sftpoptions' --ssh-command 'ssh $sshoptions' "
# >= 0.4.3 : uses only scp and sftp, --ssh-command option is not supported anymore
else
execstr="$execstr --scp-command 'scp $scpoptions' --sftp-command 'sftp $sftpoptions' "
fi
fi
# deal with symmetric or asymmetric (public/private key pair) encryption
if [ -n "$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
# excludes
for i in $exclude; do
str="${i//__star__/*}"
execstr="${execstr}--exclude '$str' "
done
# includes
for i in $include; do
[ "$i" != "/" ] || fatal "Sorry, you cannot use 'include = /'"
str="${i//__star__/*}"
execstr="${execstr}--include '$str' "
done
# vsincludes
if [ $usevserver = yes ]; then
for vserver in $vsnames; do
for vi in $vsinclude; do
str="${vi//__star__/*}"
str="$VROOTDIR/$vserver$str"
execstr="${execstr}--include '$str' "
done
done
fi
set +o noglob
### deal with tmpdir ###
precmd=
if [ -n "$tmpdir" ]; then
if [ ! -d "$tmpdir" ]; then
info "Temporary directory ($tmpdir) does not exist, creating it."
mkdir -p "$tmpdir"
[ $? -eq 0 ] || fatal "Could not create temporary directory ($tmpdir)."
fi
info "Using $tmpdir as TMPDIR"
precmd="${precmd}TMPDIR=$tmpdir "
fi
### EXECUTE ###
execstr=${execstr//\\*/\\\\\\*}
debug "$precmd duplicity $execstr --exclude '**' / $execstr_serverpart"
if [ ! $test ]; then
export PASSPHRASE=$password
output=`nice -n $nicelevel \
su -c \
"$precmd 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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