+# -*- 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" "$host"
getconf label
-getconf user root; sourceuser=$user
-getconf keep
+getconf keep 60
getconf include
+getconf vsnames all
+getconf vsinclude
getconf exclude
-### DESTINATION ###
-
setsection dest
getconf directory; destdir=$directory
# strip trailing /
getconf type; desttype=$type
getconf user; destuser=$user
getconf host; desthost=$host
-
-[ "$destdir" != "" ] || fatal "Destination directory not set"
-[ "$desttype" == "remote" ] || fatal "Only remote destinations are supported"
-
-# see if we can login
-debug "su $sourceuser -c \"ssh -o PasswordAuthentication=no $desthost -l $destuser 'echo -n 1'\""
-if [ ! $test ]; then
- result=`su $sourceuser -c "ssh -o PasswordAuthentication=no $desthost -l $destuser 'echo -n 1'" 2>&1`
- if [ "$result" != "1" ]; then
- fatal "Can't connect to $desthost as $destuser."
- fi
+getconf sshoptions
+check_consistency "destination" "$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
-# see that rdiff-backup has the same version as here
-debug "su $sourceuser -c \"ssh $desthost -l $destuser '$RDIFFBACKUP -V'\""
-if [ ! $test ]; then
- remoteversion=`su $sourceuser -c "ssh $desthost -l $destuser '$RDIFFBACKUP -V'" 2>&1`
- localversion=`$RDIFFBACKUP -V`
- if [ "$remoteversion" != "$localversion" ]; then
- fatal "rdiff-backup does not have the same version on this computer and the backup server."
- fi
+# check the connection at the source and destination
+[ -n "$test" ] || test=0
+if [ "$testconnect" = "yes" ] || [ "${test}" -eq 1 ]; then
+ test_connection $sourceuser $sourcehost
+ test_connection $destuser $desthost
fi
-execstr_serverpart="$destuser@$desthost::$destdir/$label"
-
-### SOURCE ###
+# 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" != "$destversion" ]; then
+ fatal "rdiff-backup does not have the same version at the source and at the destination."
+fi
-[ "$label" != "" ] || fatal "Source missing label"
-[ "$sourcetype" == "local" ] || fatal "Only local source type supported"
-[ "$include" != "" ] || fatal "No source includes specified"
+# 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
-execstr_clientpart="/"
+# 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
+### 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 $keep."
+ fi
+ fi
-if [ "$keep" -gt "0" ]; then
- removestr="rdiff-backup --force --remove-older-than ${keep}D "
- if [ "$desttype" == "remote" ]; then
- removestr="${removestr}${destuser}@${desthost}::"
- fi
- removestr="${removestr}${destdir}/${label}";
-
- debug "su $sourceuser -c '$removestr'"
- if [ ! $test ]; then
- output=`su $sourceuser -c "$removestr" 2>&1`
- code=$?
- if [ "$code" == "0" ]; then
- debug $output
- info "Removing backups older than $keep days succeeded."
- else
- warning $output
- warning "Failed removing backups older than $keep."
- 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 --print-statistics "
+### EXECUTE ###
-# TODO: order the includes and excludes
+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' "
+ str="${i//__star__/*}"
+ execstr="${execstr}--exclude '$str' "
done
-
# includes
for i in $include; do
- str="${i//__star__/*}"
- execstr="${execstr}--include '$str' "
+ [ "$i" != "/" ] || fatal "Sorry, you cannot use 'include = /'"
+ str="${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_clientpart $execstr_serverpart"
+execstr="${execstr}$execstr_sourcepart $execstr_destpart"
-debug "su $sourceuser -c '$execstr'"
-if [ ! $test ]; then
- output=`su $sourceuser -c "$execstr" 2>&1`
- code=$?
- if [ "$code" == "0" ]; then
+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'"
+ info "Successfully finished backing up source $label"
else
warning $output
- warning "Failed backup up source '$label'"
+ warning "Failed backup up source $label"
fi
fi
projects / matthijs / upstream / backupninja.git / blobdiff