#!/usr/bin/env -S perl -I .

use strict;
use warnings;

use FTPTest;

# This test checks whether Wget *does not* fall back from passive mode to
# active mode using a PORT command. Wget <= 1.16.3 made a fallback exposing
# the client's real IP address to the remote FTP server.
#
# This behavior circumvents expected privacy when using a proxy / proxy network (e.g. Tor).
#
# Wget >= 1.16.4 does it right. This test checks it.

###############################################################################

# From bug report 10.08.2015 from tomtidaly@sigaint.org
my $afile = <<EOF;
FTP PORT command code in v1.16.3?

In the past it could be possible for a site over http connection to
redirect wget to FPT using FTP PORT command so the site gets the real IP
of the computer even when wget proxy command is in use I believe:
https://lists.torproject.org/pipermail/tor-talk/2012-April/024040.html

Is that code still present in wget v1.16.3? It was present in v1.13.4.
EOF

$afile =~ s/\n/\r\n/g;


# code, msg, headers, content
my %urls = (
    '/afile.txt' => {
        content => $afile,
    },
);

my $cmdline = $WgetTest::WGETPATH . " -S ftp://localhost:{{port}}/afile.txt";

my $expected_error_code = 8;

my %expected_downloaded_files = ();

###############################################################################

my $the_test = FTPTest->new (
                             server_behavior => {pasv_not_supported => 1},
                             input => \%urls,
                             cmdline => $cmdline,
                             errcode => $expected_error_code,
                             output => \%expected_downloaded_files);
exit $the_test->run();

# vim: et ts=4 sw=4