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-rw-r--r--handlers/rdiff251
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diff --git a/handlers/rdiff b/handlers/rdiff
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-# -*- mode: sh; sh-basic-offset: 3; indent-tabs-mode: nil; -*-
-#
-# rdiff-backup handler script for backupninja
-# requires rdiff-backup
-#
-
-### FUNCTIONS ###
-
-function test_connection() {
- # given a user and host,
- # tests the connection.
- # if user or host is missing, returns 0
- # (ie, assume it's a local connection).
- if [ $# -lt 2 ]; then
- debug "(local is assumed to be a good connection)"
- return 0
- fi
- local user=$1
- local host=$2
- debug "ssh $sshoptions -o PasswordAuthentication=no $host -l $user 'echo -n 1'"
- local ret=`ssh $sshoptions -o PasswordAuthentication=no $host -l $user 'echo -n host is alive'`
- if echo $ret | grep "host is alive"; then
- debug "Connected to $host as $user successfully"
- else
- fatal "Can't connect to $host as $user."
- fi
-}
-
-function get_version() {
- # given no arguments, returns the local version.
- # given a user and host, returns the remote version.
- # if user or host is missing, returns the local version.
- if [ "$#" -lt 2 ]; then
- debug "$RDIFFBACKUP -V"
- echo `$RDIFFBACKUP -V | cut -d. -f1,2`
- else
- local user=$1
- local host=$2
- debug "ssh $sshoptions $host -l $user '$RDIFFBACKUP -V'"
- echo `ssh $sshoptions $host -l $user "$RDIFFBACKUP -V | grep rdiff-backup | cut -d. -f1,2"`
- fi
-}
-
-function check_consistency() {
- local section=$1
- local type=$2
- local user=$3
- local host=$4
- if [ "$type" == "local" ]; then
- if [ "$user" != "" ]; then
- warning "User should not be specified for local $section."
- fi
- if [ "$host" != "" ]; then
- warning "Host should not be specified for local $section."
- fi
- fi
- if [ "$type" == "remote" ]; then
- if [ "$user" == "" ]; then
- fatal "User must be specified for remote $section."
- fi
- if [ "host" == "" ]; then
- fatal "Host must be specifed for remote $section."
- fi
- fi
-}
-
-function check_cstream() {
- local cstream=$1
- if [ ! -x $cstream ]; then
- fatal "Can't find your cstream binary (trying: $cstream). If you use bwlimit you must have cstream installed."
- fi
-}
-
-### GET CONFIG ###
-
-getconf options
-getconf testconnect yes
-getconf nicelevel 0
-getconf bwlimit
-
-setsection source
-getconf type; sourcetype=$type
-getconf user; sourceuser=$user
-getconf host; sourcehost=$host
-check_consistency "source" "$type" "$user" "$host"
-getconf label
-getconf keep 60
-getconf include
-getconf vsnames all
-getconf vsinclude
-getconf exclude
-
-setsection dest
-getconf directory; destdir=$directory
-# strip trailing /
-destdir=${destdir%/}
-getconf type; desttype=$type
-getconf user; destuser=$user
-getconf host; desthost=$host
-getconf sshoptions
-check_consistency "destination" "$type" "$user" "$host"
-
-### CHECK CONFIG ###
-
-# 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
-
-# check the connection at the source and destination
-[ -n "$test" ] || test=0
-if [ "$testconnect" = "yes" ] || [ "${test}" -eq 1 ]; then
- test_connection $sourceuser $sourcehost
- test_connection $destuser $desthost
-fi
-
-# see that rdiff-backup has the same version at the source and destination
-sourceversion=`get_version $sourceuser $sourcehost`
-destversion=`get_version $destuser $desthost`
-if [ "$sourceversion" != "$destversion" ]; then
- fatal "rdiff-backup does not have the same version at the source and at the destination."
-fi
-
-# source specific checks
-[ "$include" != "" -o "$vsinclude" != "" ] || fatal "No source includes specified"
-case $sourcetype in
- remote ) execstr_sourcepart="$sourceuser@$sourcehost::/" ;;
- local ) execstr_sourcepart="/" ;;
- * ) fatal "sourcetype '$sourcetype' is neither local nor remote" ;;
-esac
-
-# destination specific checks
-[ "$destdir" != "" ] || fatal "Destination directory not set"
-case $desttype in
- remote ) execstr_destpart="$destuser@$desthost::$destdir/$label" ;;
- local ) execstr_destpart="$destdir/$label" ;;
- * ) fatal "desttype '$desttype' is neither local nor remote" ;;
-esac
-
-### REMOVE OLD BACKUPS ###
-
-if [ "$keep" != yes ]; then
-
- if [ "`echo $keep | tr -d 0-9`" == "" ]; then
- # add D if no other date unit is specified
- keep="${keep}D"
- fi
-
- removestr="$RDIFFBACKUP $options --force --remove-older-than $keep "
- if [ "$desttype" == "remote" ]; then
- removestr="${removestr}${destuser}@${desthost}::"
- fi
- removestr="${removestr}${destdir}/${label}";
-
- debug "$removestr"
- if [ $test = 0 ]; then
- output="`su -c "$removestr" 2>&1`"
- if [ $? = 0 ]; then
- debug $output
- info "Removing backups older than $keep days succeeded."
- else
- warning $output
- warning "Failed removing backups older than $keep."
- fi
- fi
-
-fi
-
-# Add cstream
-
-if [ ! -z $bwlimit ]; then
- check_cstream $CSTREAM;
- if [ "$desttype" = "remote" ]; then
- RDIFFBACKUP="$RDIFFBACKUP --remote-schema 'cstream -t $bwlimit | ssh %s \''rdiff-backup --server\'''"
- elif [ "$sourcetype" = "remote" ]; then
- RDIFFBACKUP="$RDIFFBACKUP --remote-schema 'ssh %s \''rdiff-backup --server\'' | cstream -t $bwlimit'"
- else
- fatal "You specified a bandwidth limit but neither your source nor destination types are remote."
- fi
-fi
-
-### EXECUTE ###
-
-execstr="$RDIFFBACKUP $options --print-statistics "
-
-set -o noglob
-
-symlinks_warning="Maybe you have mixed symlinks and '*' in this statement, which is not supported."
-
-# TODO: order the includes and excludes
-# 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
-
-# vsinclude
-if [ $usevserver = yes ]; then
- for vserver in $vsnames; do
- for vi in $vsinclude; do
- str="${vi//__star__/*}"
- str="$VROOTDIR/$vserver$str"
- if [ -n "$str" ]; then
- execstr="${execstr}--include '$str' "
- else
- warning "vsinclude statement '${vi//__star__/*}' will be ignored for VServer $vserver. $symlinks_warning"
- fi
- done
- done
-fi
-
-set +o noglob
-
-# exclude everything else
-execstr="${execstr}--exclude '/*' "
-
-# include client-part and server-part
-execstr="${execstr}$execstr_sourcepart $execstr_destpart"
-
-debug "$execstr"
-if [ $test = 0 ]; then
- output=`nice -n $nicelevel su -c "$execstr" 2>&1`
- if [ $? = 0 ]; then
- debug $output
- info "Successfully finished backing up source $label"
- else
- warning $output
- warning "Failed backup up source $label"
- fi
-fi
-
-return 0