Has anyone written a Perl script to transfer files FROM an RDS instance's DATA_PUMP_DIR?

I have successfully implemented the Perl script (below) to transfer files TO an RDS instance's DATA_PUMP_DIR from the "Strategies for Migrating Oracle Databases to AWS" whitepaper found at http://d0.awsstatic.com/whitepapers/strategies-for-migrating-oracle-database-to-aws.pdf. This solved the issue of using impdp with files (happy dance!). Now I need to solve the issue of using expdp with files and I'm no Perl programmer so I'm struggling.

Any help in retrieving files from an RDS instance's DATA_PUMP_DIR directory would be greatly appreciated!

Thank you, Marty

Perl script used to transfer files TO the RDS instance:

use DBI;
use warnings;
use strict;

# RDS instance info
my $RDS_PORT=1521;
my $RDS_HOST="<rds_endpoint>";
my $RDS_LOGIN="<schema_id>/<schema_pwd>";
my $RDS_SID="<rds_db_name>"; 

# Oracle destination directory and file name 
#The $ARGV[0] is a parameter you pass into the script
my $dirname = "DATA_PUMP_DIR";
my $fname = $ARGV[0];

my $data = "dummy";
my $chunk = 8192;

my $sql_open = "BEGIN perl_global.fh := utl_file.fopen(:dirname, :fnam
+e, 'wb', :chunk); END;";
my $sql_write = "BEGIN utl_file.put_raw(perl_global.fh, :data, true); 
+END;";
my $sql_close = "BEGIN utl_file.fclose(perl_global.fh); END;";
my $sql_global = "create or replace package perl_global as fh utl_file
+.file_type; end;";

my $conn = DBI->connect('dbi:Oracle:host='.$RDS_HOST.';sid='.$RDS_SID.
+';port='.$RDS_PORT,$RDS_LOGIN, '') || die ( $DBI::errstr . "\n");

# create a package just to have a global variable
my $updated=$conn->do($sql_global);
# open the file for writing
my $stmt = $conn->prepare ($sql_open);
$stmt->bind_param_inout(":dirname", \$dirname, 12);
$stmt->bind_param_inout(":fname", \$fname, 12);
$stmt->bind_param_inout(":chunk", \$chunk, 4);
$stmt->execute() || die ( $DBI::errstr . "\n");

open (INF, $fname) || die "\nCan't open $fname for reading: $!\n";
binmode(INF);
$stmt = $conn->prepare ($sql_write);
my %attrib = ('ora_type','24');
my $val=1;
while ($val> 0) {
  $val = read (INF, $data, $chunk);
  $stmt->bind_param(":data", $data , \%attrib);
  $stmt->execute() || die ( $DBI::errstr . "\n") ; };
die "Problem copying: $!\n" if $!;

close INF || die "Can't close $fname: $!\n";

$stmt = $conn->prepare ($sql_close);
$stmt->execute() || die ( $DBI::errstr . "\n") ;
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