+use warnings;
+
+package main::Interactive;
+use POSIX qw( :errno_h );
+use Amanda::MainLoop qw( :GIOCondition );
+use vars qw( @ISA );
+@ISA = qw( Amanda::Interactive );
+
+sub new {
+ my $class = shift;
+
+ my $self = {
+ input_src => undef};
+ return bless ($self, $class);
+}
+
+sub abort() {
+ my $self = shift;
+
+ if ($self->{'input_src'}) {
+ $self->{'input_src'}->remove();
+ $self->{'input_src'} = undef;
+ }
+}
+
+sub user_request {
+ my $self = shift;
+ my %params = @_;
+ my %subs;
+ my $buffer = "";
+
+ my $message = $params{'message'};
+ my $label = $params{'label'};
+ my $err = $params{'err'};
+ my $chg_name = $params{'chg_name'};
+
+ $subs{'data_in'} = sub {
+ my $b;
+ my $n_read = POSIX::read(0, $b, 1);
+ if (!defined $n_read) {
+ return if ($! == EINTR);
+ $self->abort();
+ return $params{'finished_cb'}->(
+ Amanda::Changer::Error->new('fatal',
+ message => "Fail to read from stdin"));
+ } elsif ($n_read == 0) {
+ $self->abort();
+ return $params{'finished_cb'}->(
+ Amanda::Changer::Error->new('fatal',
+ message => "Aborted by user"));
+ } else {
+ $buffer .= $b;
+ if ($b eq "\n") {
+ my $line = $buffer;
+ chomp $line;
+ $buffer = "";
+ $self->abort();
+ return $params{'finished_cb'}->(undef, $line);
+ }
+ }
+ };
+
+ print STDERR "$err\n";
+ print STDERR "Insert volume labeled '$label' in $chg_name\n";
+ print STDERR "and press enter, or ^D to abort.\n";
+
+ $self->{'input_src'} = Amanda::MainLoop::fd_source(0, $G_IO_IN|$G_IO_HUP|$G_IO_ERR);
+ $self->{'input_src'}->set_callback($subs{'data_in'});
+ return;
+};