+sub get_banned_users () { #{{{
+ my @ret;
+ my $userinfo=userinfo_retrieve();
+ foreach my $user (keys %{$userinfo}) {
+ push @ret, $user if $userinfo->{$user}->{banned};
+ }
+ return @ret;
+} #}}}
+
+sub set_banned_users (@) { #{{{
+ my %banned=map { $_ => 1 } @_;
+ my $userinfo=userinfo_retrieve();
+ foreach my $user (keys %{$userinfo}) {
+ $userinfo->{$user}->{banned} = $banned{$user};
+ }
+ return userinfo_store($userinfo);
+} #}}}
+