rdiff

   1 #
   2 # rdiff-backup handler script for backupninja
   3 # requires rdiff-backup
   4 #
   5
   6 setsection source
   7 getconf type; sourcetype=$type
   8 getconf label
   9 getconf user; sourceuser=$user
  10 getconf keep
  11 getconf include
  12 getconf exclude
  13
  14 ### DESTINATION ###
  15
  16 setsection dest
  17 getconf directory; destdir=$directory
  18 # strip trailing /
  19 destdir=${destdir%/}
  20 getconf type; desttype=$type
  21 getconf user; destuser=$user
  22 getconf host; desthost=$host
  23
  24 [ "$destdir" != "" ] || fatal "Destination directory not set"
  25 [ "$desttype" == "remote" ] || fatal "Only remote destinations are supported"
  26
  27 # see if we can login
  28 debug 0 "su $sourceuser -c \"ssh -o PasswordAuthentication=no $desthost -l $destuser 'echo -n 1'\""
  29 if [ ! $test ]; then
  30         result=`su $sourceuser -c "ssh -o PasswordAuthentication=no $desthost -l $destuser 'echo -n 1'" 2>&1`
  31         if [ "$result" != "1" ]; then
  32                 fatal "Can't connect to $desthost as $destuser."
  33         fi
  34 fi
  35
  36 # see that rdiff-backup has the same version as here
  37 debug 0 "su $sourceuser -c \"ssh $desthost -l $destuser '$RDIFFBACKUP -V'\""
  38 if [ ! $test ]; then
  39         remoteversion=`su $sourceuser -c "ssh $desthost -l $destuser '$RDIFFBACKUP -V'" 2>&1`
  40         localversion=`$RDIFFBACKUP -V`
  41         if [ "$remoteversion" != "$localversion" ]; then
  42                 fatal "rdiff-backup does not have the same version on this computer and the backup server."
  43         fi
  44 fi
  45
  46 execstr_serverpart="$destuser@$desthost::$destdir/$label"
  47
  48 ### SOURCE ###
  49
  50 [ "$label" != "" ] || fatal "Source missing label"
  51 [ "$sourcetype" == "local" ] || fatal "Only local source type supported"
  52 [ "$include" != "" ] || fatal "No source includes specified"
  53
  54 execstr_clientpart="/"
  55
  56 ## REMOVE OLD BACKUPS
  57
  58 if [ "$keep" -gt "0" ]; then
  59         removestr="rdiff-backup --force --remove-older-than ${keep}D "
  60         if [ "$desttype" == "remote" ]; then
  61                 removestr="${removestr}${destuser}@${desthost}::"
  62         fi
  63         removestr="${removestr}${destdir}/${label}";
  64
  65         debug 0 "su $sourceuser -c '$removestr'"
  66         if [ ! $test ]; then
  67                 output=`su $sourceuser -c "$removestr" 2>&1`
  68                 code=$?
  69                 if [ "$code" == "0" ]; then
  70                         debug 0 $output
  71                         debug 1 "Removing backups older than $keep days succeeded."
  72                 else
  73                         debug 2 $output
  74                         debug 2 "Failed removing backups older than $keep."
  75                 fi
  76         fi
  77 fi
  78
  79 ## EXECUTE ##
  80
  81 execstr="$RDIFFBACKUP --print-statistics "
  82
  83 # TODO: order the includes and excludes
  84
  85 # excludes
  86 for i in $exclude; do
  87         str="${i//__star__/*}"
  88         execstr="${execstr}--exclude '$str' "
  89 done
  90
  91 # includes
  92 for i in $include; do
  93         str="${i//__star__/*}"
  94         execstr="${execstr}--include '$str' "
  95 done
  96
  97 # exclude everything else
  98 execstr="${execstr}--exclude '/*' "
  99
 100 # include client-part and server-part
 101 execstr="${execstr}$execstr_clientpart $execstr_serverpart"
 102
 103 debug 0 "su $sourceuser -c '$execstr'"
 104 if [ ! $test ]; then
 105         output=`su $sourceuser -c "$execstr" 2>&1`
 106         code=$?
 107         if [ "$code" == "0" ]; then
 108                 debug 0 $output
 109                 debug 1 "Successfully finished backing up source '$label'"
 110         else
 111                 debug 2 $output
 112                 debug 2 "Failed backup up source '$label'"
 113         fi
 114 fi
 115
 116 return 0