1 files changed, 31 insertions, 2 deletions
diff --git a/lib/RHRD/rddb.pm b/lib/RHRD/rddb.pm
index b7d0698..cab89c2 100755
--- a/lib/RHRD/rddb.pm
+++ b/lib/RHRD/rddb.pm
@@ -26,11 +26,19 @@ use strict;
 use Config::IniFiles;
 use DBI;
 
+###########################  constants  ###########################
+
+use constant {
+  DB_VERSION => 242,
+  RD_CONFIG_FILE => '/etc/rd.conf',
+  DROPBOX_PSEUDO_STATION_NAME => 'import-dropbox',
+};
+
 ###########################  connection handling  ###########################
 
 sub opendb
 {
-  my $RD_CONF = "/etc/rd.conf"; # TODO: hardcoded value
+  my $RD_CONF = RD_CONFIG_FILE;
   my $cfg = Config::IniFiles->new(-file => $RD_CONF)
     or return (undef , 'ERROR', "Config File Error: " . join("\n", @Config::IniFiles::errors));
 
@@ -42,9 +50,24 @@ sub opendb
   my $dbh = DBI->connect("DBI:mysql:$dbname:$dbhost","$dbuser","$dbpasswd")
     or return (undef, 'ERROR', "Database Error: " . $DBI::errstr);
 
+
   $dbh->do(qq{SET CHARACTER SET utf8;})
     or return (undef, 'ERROR', "Database Error: " . $dbh->errstr);
 
+
+  my $sth = $dbh->prepare(qq{select DB from VERSION;})
+    or return (undef, 'ERROR', "Database Error: " . $dbh->errstr);
+
+  $sth->execute()
+    or return (undef, 'ERROR', "Database Error: " . $sth->errstr);
+
+  my ($dbver) = $sth->fetchrow_array();
+  $sth->finish();
+
+  if($dbver != DB_VERSION) {
+    return (undef, 'ERROR', "Wrong Database Version " . $dbver . " (should be " . DB_VERSION . ")");
+  }
+
   return ($dbh, 'OK', 'success');
 }
 
@@ -371,6 +394,8 @@ sub get_group_carts
   my ($low_cart, $high_cart, $cart_type, $enforce_cart_range) = $sth->fetchrow_array;
   $sth->finish();
 
+  unless(defined $low_cart) { return (undef, 'ERROR', "group '" . $groupname . "' does not exist"); }
+
   return ($low_cart, $high_cart, $cart_type, $enforce_cart_range);
 }
 
@@ -390,6 +415,8 @@ sub set_group_carts
     $enforce_cart_range = 'N';
   }
 
+  # TODO: check if cart range is already in use by other group
+
   my $sql = qq{update GROUPS set DEFAULT_LOW_CART = ?, DEFAULT_HIGH_CART = ?, DEFAULT_CART_TYPE  = ? , ENFORCE_CART_RANGE = ? where NAME = ?;};
   my $sth = $dbh->prepare($sql)
     or return (undef, 'ERROR', "Database Error: " . $dbh->errstr);
@@ -416,6 +443,8 @@ sub get_group_reports
   my ($now_next, $traffic, $music) = $sth->fetchrow_array;
   $sth->finish();
 
+  unless(defined $now_next) { return (undef, 'ERROR', "group '" . $groupname . "' does not exist"); }
+
   return ($now_next, $traffic, $music);
 }
 
@@ -484,7 +513,7 @@ sub get_dropboxes
   my $sth = $dbh->prepare($sql)
     or return (undef, 'ERROR', "Database Error: " . $dbh->errstr);
 
-  $sth->execute($username, 'import-dropbox') # TODO: hardcoded value
+  $sth->execute($username, DROPBOX_PSEUDO_STATION_NAME)
     or return (undef, 'ERROR', "Database Error: " . $sth->errstr);
 
   my @allowed_dbs;