package ProFTPD::Tests::Modules::mod_lang;

use lib qw(t/lib);
use base qw(ProFTPD::TestSuite::Child);
use strict;

use File::Copy;
use File::Path qw(mkpath);
use File::Spec;
use IO::Handle;

use ProFTPD::TestSuite::FTP;
use ProFTPD::TestSuite::Utils qw(:auth :config :running :test :testsuite);

$| = 1;

my $order = 0;

my $TESTS = {
  lang_feat_default => {
    order => ++$order,
    test_class => [qw(forking)],
  },

  lang_feat_engine_off => {
    order => ++$order,
    test_class => [qw(forking)],
  },

  lang_lang_none_ok => {
    order => ++$order,
    test_class => [qw(forking)],
  },

  lang_lang_env_ok => {
    order => ++$order,
    test_class => [qw(forking)],
  },

  lang_lang_default_ok => {
    order => ++$order,
    test_class => [qw(forking)],
  },

  lang_lang_unknown_failed => {
    order => ++$order,
    test_class => [qw(forking)],
  },

  lang_opts_utf8_ok => {
    order => ++$order,
    test_class => [qw(forking)],
  },

  lang_opts_utf8_nonbool_failed => {
    order => ++$order,
    test_class => [qw(forking)],
  },

  lang_lang_default_en_US => {
    order => ++$order,
    test_class => [qw(forking)],
  },

  lang_lang_default_en_US_UTF8 => {
    order => ++$order,
    test_class => [qw(forking)],
  },

  lang_opts_utf8_useencoding_on => {
    order => ++$order,
    test_class => [qw(forking)],
  },

  lang_opts_utf8_useencoding_off => {
    order => ++$order,
    test_class => [qw(forking)],
  },

  lang_opts_utf8_useencoding_charsets => {
    order => ++$order,
    test_class => [qw(forking)],
  },

  lang_opts_utf8_useencoding_charsets_strict => {
    order => ++$order,
    test_class => [qw(forking)],
  },

  lang_opts_utf8_useencoding_charsets_strict_with_utf8 => {
    order => ++$order,
    test_class => [qw(forking)],
  },

  lang_opts_utf8_useencoding_charsets_with_env => {
    order => ++$order,
    test_class => [qw(forking)],
  },

  lang_useencoding_latin1_utf8 => {
    order => ++$order,
    test_class => [qw(forking)],
  },

  lang_useencoding_utf8_latin1 => {
    order => ++$order,
    test_class => [qw(forking)],
  },

  lang_opts_utf8_prefer_server_encoding_bug4125 => {
    order => ++$order,
    test_class => [qw(bug forking)],
  },

  lang_opts_utf8_useencoding_charsets_prefer_server_encoding_bug4125 => {
    order => ++$order,
    test_class => [qw(bug forking)],
  },

  lang_useencoding_ascii_utf8_require_valid_encoding_bug4125 => {
    order => ++$order,
    test_class => [qw(bug forking)],
  },

  lang_useencoding_latin1_utf8_per_user_bug4214 => {
    order => ++$order,
    test_class => [qw(forking mod_ifsession)],
  },

  lang_useencoding_utf8_latin1_per_user_bug4214 => {
    order => ++$order,
    test_class => [qw(forking mod_ifsession)],
  },

};

sub new {
  return shift()->SUPER::new(@_);
}

sub list_tests {
  return testsuite_get_runnable_tests($TESTS);
}

sub lang_feat_default {
  my $self = shift;
  my $tmpdir = $self->{tmpdir};

  my $config_file = "$tmpdir/lang.conf";
  my $pid_file = File::Spec->rel2abs("$tmpdir/lang.pid");
  my $scoreboard_file = File::Spec->rel2abs("$tmpdir/lang.scoreboard");

  my $log_file = test_get_logfile();

  my $auth_user_file = File::Spec->rel2abs("$tmpdir/lang.passwd");
  my $auth_group_file = File::Spec->rel2abs("$tmpdir/lang.group");

  my $user = 'proftpd';
  my $passwd = 'test';
  my $group = 'ftpd';
  my $home_dir = File::Spec->rel2abs($tmpdir);
  my $uid = 500;
  my $gid = 500;

  # Make sure that, if we're running as root, that the home directory has
  # permissions/privs set for the account we create
  if ($< == 0) {
    unless (chmod(0755, $home_dir)) {
      die("Can't set perms on $home_dir to 0755: $!");
    }

    unless (chown($uid, $gid, $home_dir)) {
      die("Can't set owner of $home_dir to $uid/$gid: $!");
    }
  }

  auth_user_write($auth_user_file, $user, $passwd, $uid, $gid, $home_dir,
    '/bin/bash');
  auth_group_write($auth_group_file, $group, $gid, $user);

  my $config = {
    PidFile => $pid_file,
    ScoreboardFile => $scoreboard_file,
    SystemLog => $log_file,

    AuthUserFile => $auth_user_file,
    AuthGroupFile => $auth_group_file,
    AuthOrder => 'mod_auth_file.c',

    IfModules => {
      'mod_delay.c' => {
        DelayEngine => 'off',
      },
    },
  };

  my ($port, $config_user, $config_group) = config_write($config_file, $config);

  # Open pipes, for use between the parent and child processes.  Specifically,
  # the child will indicate when it's done with its test by writing a message
  # to the parent.
  my ($rfh, $wfh);
  unless (pipe($rfh, $wfh)) {
    die("Can't open pipe: $!");
  }

  my $ex;

  # Fork child
  $self->handle_sigchld();
  defined(my $pid = fork()) or die("Can't fork: $!");
  if ($pid) {
    eval {
      my $client = ProFTPD::TestSuite::FTP->new('127.0.0.1', $port);
      $client->login($user, $passwd);

      $client->feat();
      my $resp_code = $client->response_code();
      my $resp_msgs = $client->response_msgs();

      my $expected;

      $expected = 211;
      $self->assert($expected == $resp_code,
        test_msg("Expected $expected, got $resp_code"));

      my $feats = {
        ' UTF8' => 1,

        # One of the following will appear in the FEAT list, depending
        # on the underlying platform.
        ' LANG en_US' => 1,
        ' LANG en-US' => 1,
        ' LANG en-US*' => 1,
        ' LANG en_US.UTF-8' => 1,
        ' LANG en-US.UTF-8' => 1,
        ' LANG en-US.UTF-8*' => 1,
      };

      my $seen = 0;

      my $nfeat = scalar(@$resp_msgs);
      for (my $i = 0; $i < $nfeat; $i++) {
        if (defined($feats->{$resp_msgs->[$i]})) {
          $seen++;
        }
      }

      $expected = 2;
      $self->assert($expected == $seen,
        test_msg("Expected $expected, got $seen"));
    };

    if ($@) {
      $ex = $@;
    }

    $wfh->print("done\n");
    $wfh->flush();

  } else {
    eval { server_wait($config_file, $rfh) };
    if ($@) {
      warn($@);
      exit 1;
    }

    exit 0;
  }

  # Stop server
  server_stop($pid_file);

  $self->assert_child_ok($pid);

  if ($ex) {
    test_append_logfile($log_file, $ex);
    unlink($log_file);

    die($ex);
  }

  unlink($log_file);
}

sub lang_feat_engine_off {
  my $self = shift;
  my $tmpdir = $self->{tmpdir};

  my $config_file = "$tmpdir/lang.conf";
  my $pid_file = File::Spec->rel2abs("$tmpdir/lang.pid");
  my $scoreboard_file = File::Spec->rel2abs("$tmpdir/lang.scoreboard");

  my $log_file = test_get_logfile();

  my $auth_user_file = File::Spec->rel2abs("$tmpdir/lang.passwd");
  my $auth_group_file = File::Spec->rel2abs("$tmpdir/lang.group");

  my $user = 'proftpd';
  my $passwd = 'test';
  my $group = 'ftpd';
  my $home_dir = File::Spec->rel2abs($tmpdir);
  my $uid = 500;
  my $gid = 500;

  # Make sure that, if we're running as root, that the home directory has
  # permissions/privs set for the account we create
  if ($< == 0) {
    unless (chmod(0755, $home_dir)) {
      die("Can't set perms on $home_dir to 0755: $!");
    }

    unless (chown($uid, $gid, $home_dir)) {
      die("Can't set owner of $home_dir to $uid/$gid: $!");
    }
  }

  auth_user_write($auth_user_file, $user, $passwd, $uid, $gid, $home_dir,
    '/bin/bash');
  auth_group_write($auth_group_file, $group, $gid, $user);

  my $config = {
    PidFile => $pid_file,
    ScoreboardFile => $scoreboard_file,
    SystemLog => $log_file,

    AuthUserFile => $auth_user_file,
    AuthGroupFile => $auth_group_file,
    AuthOrder => 'mod_auth_file.c',

    IfModules => {
      'mod_delay.c' => {
        DelayEngine => 'off',
      },

      'mod_lang.c' => {
        LangEngine => 'off',
      },
    },
  };

  my ($port, $config_user, $config_group) = config_write($config_file, $config);

  # Open pipes, for use between the parent and child processes.  Specifically,
  # the child will indicate when it's done with its test by writing a message
  # to the parent.
  my ($rfh, $wfh);
  unless (pipe($rfh, $wfh)) {
    die("Can't open pipe: $!");
  }

  my $ex;

  # Fork child
  $self->handle_sigchld();
  defined(my $pid = fork()) or die("Can't fork: $!");
  if ($pid) {
    eval {
      my $client = ProFTPD::TestSuite::FTP->new('127.0.0.1', $port);
      $client->login($user, $passwd);

      $client->feat();
      my $resp_code = $client->response_code();
      my $resp_msgs = $client->response_msgs();

      my $expected;

      $expected = 211;
      $self->assert($expected == $resp_code,
        test_msg("Expected $expected, got $resp_code"));

      my $feats = {
        # None of the following should appear in the FEAT list

        ' UTF8' => 1,
        ' LANG en_US' => 1,
        ' LANG en-US' => 1,
        ' LANG en-US*' => 1,
        ' LANG en_US.UTF-8' => 1,
        ' LANG en-US.UTF-8' => 1,
        ' LANG en-US.UTF-8*' => 1,
      };

      my $seen = 0;

      my $nfeat = scalar(@$resp_msgs);
      for (my $i = 0; $i < $nfeat; $i++) {
        if (defined($feats->{$resp_msgs->[$i]})) {
          $seen++;
        }
      }

      $expected = 0;
      $self->assert($expected == $seen,
        test_msg("Expected $expected, got $seen"));
    };

    if ($@) {
      $ex = $@;
    }

    $wfh->print("done\n");
    $wfh->flush();

  } else {
    eval { server_wait($config_file, $rfh) };
    if ($@) {
      warn($@);
      exit 1;
    }

    exit 0;
  }

  # Stop server
  server_stop($pid_file);

  $self->assert_child_ok($pid);

  if ($ex) {
    test_append_logfile($log_file, $ex);
    unlink($log_file);

    die($ex);
  }

  unlink($log_file);
}

sub lang_lang_none_ok {
  my $self = shift;
  my $tmpdir = $self->{tmpdir};

  my $config_file = "$tmpdir/lang.conf";
  my $pid_file = File::Spec->rel2abs("$tmpdir/lang.pid");
  my $scoreboard_file = File::Spec->rel2abs("$tmpdir/lang.scoreboard");

  my $log_file = test_get_logfile();

  my $auth_user_file = File::Spec->rel2abs("$tmpdir/lang.passwd");
  my $auth_group_file = File::Spec->rel2abs("$tmpdir/lang.group");

  my $user = 'proftpd';
  my $passwd = 'test';
  my $group = 'ftpd';
  my $home_dir = File::Spec->rel2abs($tmpdir);
  my $uid = 500;
  my $gid = 500;

  # Make sure that, if we're running as root, that the home directory has
  # permissions/privs set for the account we create
  if ($< == 0) {
    unless (chmod(0755, $home_dir)) {
      die("Can't set perms on $home_dir to 0755: $!");
    }

    unless (chown($uid, $gid, $home_dir)) {
      die("Can't set owner of $home_dir to $uid/$gid: $!");
    }
  }

  auth_user_write($auth_user_file, $user, $passwd, $uid, $gid, $home_dir,
    '/bin/bash');
  auth_group_write($auth_group_file, $group, $gid, $user);

  my $config = {
    PidFile => $pid_file,
    ScoreboardFile => $scoreboard_file,
    SystemLog => $log_file,

    AuthUserFile => $auth_user_file,
    AuthGroupFile => $auth_group_file,
    AuthOrder => 'mod_auth_file.c',

    IfModules => {
      'mod_delay.c' => {
        DelayEngine => 'off',
      },
    },
  };

  my ($port, $config_user, $config_group) = config_write($config_file, $config);

  # Open pipes, for use between the parent and child processes.  Specifically,
  # the child will indicate when it's done with its test by writing a message
  # to the parent.
  my ($rfh, $wfh);
  unless (pipe($rfh, $wfh)) {
    die("Can't open pipe: $!");
  }

  my $ex;

  # Fork child
  $self->handle_sigchld();
  defined(my $pid = fork()) or die("Can't fork: $!");
  if ($pid) {
    eval {
      my $client = ProFTPD::TestSuite::FTP->new('127.0.0.1', $port);

      my ($resp_code, $resp_msg) = $client->lang();

      my $expected;

      $expected = 200;
      $self->assert($expected == $resp_code,
        test_msg("Expected $expected, got $resp_code"));

      $expected = 'Using default language \S+';
      $self->assert(qr/$expected/, $resp_msg,
        test_msg("Expected '$expected', got '$resp_msg'"));
    };

    if ($@) {
      $ex = $@;
    }

    $wfh->print("done\n");
    $wfh->flush();

  } else {
    eval { server_wait($config_file, $rfh) };
    if ($@) {
      warn($@);
      exit 1;
    }

    exit 0;
  }

  # Stop server
  server_stop($pid_file);

  $self->assert_child_ok($pid);

  if ($ex) {
    test_append_logfile($log_file, $ex);
    unlink($log_file);

    die($ex);
  }

  unlink($log_file);
}

sub lang_lang_env_ok {
  my $self = shift;
  my $tmpdir = $self->{tmpdir};

  my $config_file = "$tmpdir/lang.conf";
  my $pid_file = File::Spec->rel2abs("$tmpdir/lang.pid");
  my $scoreboard_file = File::Spec->rel2abs("$tmpdir/lang.scoreboard");

  my $log_file = test_get_logfile();

  my $auth_user_file = File::Spec->rel2abs("$tmpdir/lang.passwd");
  my $auth_group_file = File::Spec->rel2abs("$tmpdir/lang.group");

  my $user = 'proftpd';
  my $passwd = 'test';
  my $group = 'ftpd';
  my $home_dir = File::Spec->rel2abs($tmpdir);
  my $uid = 500;
  my $gid = 500;

  # Make sure that, if we're running as root, that the home directory has
  # permissions/privs set for the account we create
  if ($< == 0) {
    unless (chmod(0755, $home_dir)) {
      die("Can't set perms on $home_dir to 0755: $!");
    }

    unless (chown($uid, $gid, $home_dir)) {
      die("Can't set owner of $home_dir to $uid/$gid: $!");
    }
  }

  auth_user_write($auth_user_file, $user, $passwd, $uid, $gid, $home_dir,
    '/bin/bash');
  auth_group_write($auth_group_file, $group, $gid, $user);

  my $config = {
    PidFile => $pid_file,
    ScoreboardFile => $scoreboard_file,
    SystemLog => $log_file,

    AuthUserFile => $auth_user_file,
    AuthGroupFile => $auth_group_file,
    AuthOrder => 'mod_auth_file.c',

    IfModules => {
      'mod_delay.c' => {
        DelayEngine => 'off',
      },
    },
  };

  my ($port, $config_user, $config_group) = config_write($config_file, $config);

  my $lang = 'en_US';

  # Open pipes, for use between the parent and child processes.  Specifically,
  # the child will indicate when it's done with its test by writing a message
  # to the parent.
  my ($rfh, $wfh);
  unless (pipe($rfh, $wfh)) {
    die("Can't open pipe: $!");
  }

  my $ex;

  # Fork child
  $self->handle_sigchld();
  defined(my $pid = fork()) or die("Can't fork: $!");
  if ($pid) {
    eval {
      my $client = ProFTPD::TestSuite::FTP->new('127.0.0.1', $port);

      my ($resp_code, $resp_msg) = $client->lang();

      my $expected;

      $expected = 200;
      $self->assert($expected == $resp_code,
        test_msg("Expected $expected, got $resp_code"));

      $expected = "Using default language $lang";
      $self->assert(qr/$expected/, $resp_msg,
        test_msg("Expected '$expected', got '$resp_msg'"));
    };

    if ($@) {
      $ex = $@;
    }

    $wfh->print("done\n");
    $wfh->flush();

  } else {
    # Specify a LANG environment variable, for mod_lang to pick up
    $ENV{LANG} = $lang;

    eval { server_wait($config_file, $rfh) };
    if ($@) {
      warn($@);
      exit 1;
    }

    exit 0;
  }

  # Stop server
  server_stop($pid_file);

  $self->assert_child_ok($pid);

  if ($ex) {
    test_append_logfile($log_file, $ex);
    unlink($log_file);

    die($ex);
  }

  unlink($log_file);
}

sub lang_lang_default_ok {
  my $self = shift;
  my $tmpdir = $self->{tmpdir};

  my $config_file = "$tmpdir/lang.conf";
  my $pid_file = File::Spec->rel2abs("$tmpdir/lang.pid");
  my $scoreboard_file = File::Spec->rel2abs("$tmpdir/lang.scoreboard");

  my $log_file = test_get_logfile();

  my $auth_user_file = File::Spec->rel2abs("$tmpdir/lang.passwd");
  my $auth_group_file = File::Spec->rel2abs("$tmpdir/lang.group");

  my $user = 'proftpd';
  my $passwd = 'test';
  my $group = 'ftpd';
  my $home_dir = File::Spec->rel2abs($tmpdir);
  my $uid = 500;
  my $gid = 500;

  # Make sure that, if we're running as root, that the home directory has
  # permissions/privs set for the account we create
  if ($< == 0) {
    unless (chmod(0755, $home_dir)) {
      die("Can't set perms on $home_dir to 0755: $!");
    }

    unless (chown($uid, $gid, $home_dir)) {
      die("Can't set owner of $home_dir to $uid/$gid: $!");
    }
  }

  auth_user_write($auth_user_file, $user, $passwd, $uid, $gid, $home_dir,
    '/bin/bash');
  auth_group_write($auth_group_file, $group, $gid, $user);

  my $config = {
    PidFile => $pid_file,
    ScoreboardFile => $scoreboard_file,
    SystemLog => $log_file,

    AuthUserFile => $auth_user_file,
    AuthGroupFile => $auth_group_file,
    AuthOrder => 'mod_auth_file.c',

    IfModules => {
      'mod_delay.c' => {
        DelayEngine => 'off',
      },
    },
  };

  my ($port, $config_user, $config_group) = config_write($config_file, $config);

  # Open pipes, for use between the parent and child processes.  Specifically,
  # the child will indicate when it's done with its test by writing a message
  # to the parent.
  my ($rfh, $wfh);
  unless (pipe($rfh, $wfh)) {
    die("Can't open pipe: $!");
  }

  my $ex;

  # Fork child
  $self->handle_sigchld();
  defined(my $pid = fork()) or die("Can't fork: $!");
  if ($pid) {
    eval {
      my $client = ProFTPD::TestSuite::FTP->new('127.0.0.1', $port);

      my ($resp_code, $resp_msg);

      # First, find out what the default language is.
      ($resp_code, $resp_msg) = $client->lang();

      my $expected;

      $expected = 200;
      $self->assert($expected == $resp_code,
        test_msg("Expected $expected, got $resp_code"));

      $expected = '^Using default language (\S+)$';
      $self->assert(qr/$expected/, $resp_msg,
        test_msg("Expected '$expected', got '$resp_msg'"));

      $resp_msg =~ /$expected/;
      my $default_lang = $1;

      ($resp_code, $resp_msg) = $client->lang($default_lang);

      $expected = 200;
      $self->assert($expected == $resp_code,
        test_msg("Expected $expected, got $resp_code"));

      $expected = "Using language $default_lang";
      $self->assert($expected eq $resp_msg,
        test_msg("Expected '$expected', got '$resp_msg'"));
    };

    if ($@) {
      $ex = $@;
    }

    $wfh->print("done\n");
    $wfh->flush();

  } else {
    eval { server_wait($config_file, $rfh) };
    if ($@) {
      warn($@);
      exit 1;
    }

    exit 0;
  }

  # Stop server
  server_stop($pid_file);

  $self->assert_child_ok($pid);

  if ($ex) {
    test_append_logfile($log_file, $ex);
    unlink($log_file);

    die($ex);
  }

  unlink($log_file);
}

sub lang_lang_unknown_failed {
  my $self = shift;
  my $tmpdir = $self->{tmpdir};

  my $config_file = "$tmpdir/lang.conf";
  my $pid_file = File::Spec->rel2abs("$tmpdir/lang.pid");
  my $scoreboard_file = File::Spec->rel2abs("$tmpdir/lang.scoreboard");

  my $log_file = test_get_logfile();

  my $auth_user_file = File::Spec->rel2abs("$tmpdir/lang.passwd");
  my $auth_group_file = File::Spec->rel2abs("$tmpdir/lang.group");

  my $user = 'proftpd';
  my $passwd = 'test';
  my $group = 'ftpd';
  my $home_dir = File::Spec->rel2abs($tmpdir);
  my $uid = 500;
  my $gid = 500;

  # Make sure that, if we're running as root, that the home directory has
  # permissions/privs set for the account we create
  if ($< == 0) {
    unless (chmod(0755, $home_dir)) {
      die("Can't set perms on $home_dir to 0755: $!");
    }

    unless (chown($uid, $gid, $home_dir)) {
      die("Can't set owner of $home_dir to $uid/$gid: $!");
    }
  }

  auth_user_write($auth_user_file, $user, $passwd, $uid, $gid, $home_dir,
    '/bin/bash');
  auth_group_write($auth_group_file, $group, $gid, $user);

  my $config = {
    PidFile => $pid_file,
    ScoreboardFile => $scoreboard_file,
    SystemLog => $log_file,

    AuthUserFile => $auth_user_file,
    AuthGroupFile => $auth_group_file,
    AuthOrder => 'mod_auth_file.c',

    IfModules => {
      'mod_delay.c' => {
        DelayEngine => 'off',
      },
    },
  };

  my ($port, $config_user, $config_group) = config_write($config_file, $config);

  # Open pipes, for use between the parent and child processes.  Specifically,
  # the child will indicate when it's done with its test by writing a message
  # to the parent.
  my ($rfh, $wfh);
  unless (pipe($rfh, $wfh)) {
    die("Can't open pipe: $!");
  }

  my $ex;

  # Fork child
  $self->handle_sigchld();
  defined(my $pid = fork()) or die("Can't fork: $!");
  if ($pid) {
    eval {
      my $client = ProFTPD::TestSuite::FTP->new('127.0.0.1', $port);

      my ($resp_code, $resp_msg);

      eval { $client->lang('foobarbaz') };
      unless ($@) {
        die("LANG succeeded unexpectedly");

      } else {
        $resp_code = $client->response_code();
        $resp_msg = $client->response_msg();
      }

      my $expected;

      $expected = 504;
      $self->assert($expected == $resp_code,
        test_msg("Expected $expected, got $resp_code"));

      $expected = 'Language foobarbaz not supported';
      $self->assert($expected eq $resp_msg,
        test_msg("Expected '$expected', got '$resp_msg'"));
    };

    if ($@) {
      $ex = $@;
    }

    $wfh->print("done\n");
    $wfh->flush();

  } else {
    eval { server_wait($config_file, $rfh) };
    if ($@) {
      warn($@);
      exit 1;
    }

    exit 0;
  }

  # Stop server
  server_stop($pid_file);

  $self->assert_child_ok($pid);

  if ($ex) {
    test_append_logfile($log_file, $ex);
    unlink($log_file);

    die($ex);
  }

  unlink($log_file);
}

sub lang_opts_utf8_ok {
  my $self = shift;
  my $tmpdir = $self->{tmpdir};

  my $config_file = "$tmpdir/lang.conf";
  my $pid_file = File::Spec->rel2abs("$tmpdir/lang.pid");
  my $scoreboard_file = File::Spec->rel2abs("$tmpdir/lang.scoreboard");

  my $log_file = test_get_logfile();

  my $auth_user_file = File::Spec->rel2abs("$tmpdir/lang.passwd");
  my $auth_group_file = File::Spec->rel2abs("$tmpdir/lang.group");

  my $user = 'proftpd';
  my $passwd = 'test';
  my $group = 'ftpd';
  my $home_dir = File::Spec->rel2abs($tmpdir);
  my $uid = 500;
  my $gid = 500;

  # Make sure that, if we're running as root, that the home directory has
  # permissions/privs set for the account we create
  if ($< == 0) {
    unless (chmod(0755, $home_dir)) {
      die("Can't set perms on $home_dir to 0755: $!");
    }

    unless (chown($uid, $gid, $home_dir)) {
      die("Can't set owner of $home_dir to $uid/$gid: $!");
    }
  }

  auth_user_write($auth_user_file, $user, $passwd, $uid, $gid, $home_dir,
    '/bin/bash');
  auth_group_write($auth_group_file, $group, $gid, $user);

  my $config = {
    PidFile => $pid_file,
    ScoreboardFile => $scoreboard_file,
    SystemLog => $log_file,

    AuthUserFile => $auth_user_file,
    AuthGroupFile => $auth_group_file,
    AuthOrder => 'mod_auth_file.c',

    IfModules => {
      'mod_delay.c' => {
        DelayEngine => 'off',
      },
    },
  };

  my ($port, $config_user, $config_group) = config_write($config_file, $config);

  # Open pipes, for use between the parent and child processes.  Specifically,
  # the child will indicate when it's done with its test by writing a message
  # to the parent.
  my ($rfh, $wfh);
  unless (pipe($rfh, $wfh)) {
    die("Can't open pipe: $!");
  }

  my $ex;

  # Fork child
  $self->handle_sigchld();
  defined(my $pid = fork()) or die("Can't fork: $!");
  if ($pid) {
    eval {
      my $client = ProFTPD::TestSuite::FTP->new('127.0.0.1', $port);
      my ($resp_code, $resp_msg) = $client->opts('UTF8', 'off');

      my $expected;

      $expected = 200;
      $self->assert($expected == $resp_code,
        test_msg("Expected response code $expected, got $resp_code"));

      $expected = 'UTF8 set to off';
      $self->assert($expected eq $resp_msg,
        test_msg("Expected response message '$expected', got '$resp_msg'"));

      ($resp_code, $resp_msg) = $client->opts('UTF8', 'on');

      $expected = 200;
      $self->assert($expected == $resp_code,
        test_msg("Expected response code $expected, got $resp_code"));

      $expected = 'UTF8 set to on';
      $self->assert($expected eq $resp_msg,
        test_msg("Expected response message '$expected', got '$resp_msg'"));
    };

    if ($@) {
      $ex = $@;
    }

    $wfh->print("done\n");
    $wfh->flush();

  } else {
    eval { server_wait($config_file, $rfh) };
    if ($@) {
      warn($@);
      exit 1;
    }

    exit 0;
  }

  # Stop server
  server_stop($pid_file);

  $self->assert_child_ok($pid);

  if ($ex) {
    test_append_logfile($log_file, $ex);
    unlink($log_file);

    die($ex);
  }

  unlink($log_file);
}

sub lang_opts_utf8_nonbool_failed {
  my $self = shift;
  my $tmpdir = $self->{tmpdir};

  my $config_file = "$tmpdir/lang.conf";
  my $pid_file = File::Spec->rel2abs("$tmpdir/lang.pid");
  my $scoreboard_file = File::Spec->rel2abs("$tmpdir/lang.scoreboard");

  my $log_file = test_get_logfile();

  my $auth_user_file = File::Spec->rel2abs("$tmpdir/lang.passwd");
  my $auth_group_file = File::Spec->rel2abs("$tmpdir/lang.group");

  my $user = 'proftpd';
  my $passwd = 'test';
  my $group = 'ftpd';
  my $home_dir = File::Spec->rel2abs($tmpdir);
  my $uid = 500;
  my $gid = 500;

  # Make sure that, if we're running as root, that the home directory has
  # permissions/privs set for the account we create
  if ($< == 0) {
    unless (chmod(0755, $home_dir)) {
      die("Can't set perms on $home_dir to 0755: $!");
    }

    unless (chown($uid, $gid, $home_dir)) {
      die("Can't set owner of $home_dir to $uid/$gid: $!");
    }
  }

  auth_user_write($auth_user_file, $user, $passwd, $uid, $gid, $home_dir,
    '/bin/bash');
  auth_group_write($auth_group_file, $group, $gid, $user);

  my $config = {
    PidFile => $pid_file,
    ScoreboardFile => $scoreboard_file,
    SystemLog => $log_file,

    AuthUserFile => $auth_user_file,
    AuthGroupFile => $auth_group_file,
    AuthOrder => 'mod_auth_file.c',

    IfModules => {
      'mod_delay.c' => {
        DelayEngine => 'off',
      },
    },
  };

  my ($port, $config_user, $config_group) = config_write($config_file, $config);

  # Open pipes, for use between the parent and child processes.  Specifically,
  # the child will indicate when it's done with its test by writing a message
  # to the parent.
  my ($rfh, $wfh);
  unless (pipe($rfh, $wfh)) {
    die("Can't open pipe: $!");
  }

  my $ex;

  # Fork child
  $self->handle_sigchld();
  defined(my $pid = fork()) or die("Can't fork: $!");
  if ($pid) {
    eval {
      my $client = ProFTPD::TestSuite::FTP->new('127.0.0.1', $port);

      my ($resp_code, $resp_msg);

      eval { $client->opts('UTF8', 'foobar') };
      unless ($@) {
        die("OPTS UTF8 succeeded unexpectedly");

      } else {
        $resp_code = $client->response_code();
        $resp_msg = $client->response_msg();
      }

      my $expected;

      $expected = 501;
      $self->assert($expected == $resp_code,
        test_msg("Expected $expected, got $resp_code"));

      $expected = "'OPTS UTF8' not understood";
      $self->assert($expected eq $resp_msg,
        test_msg("Expected '$expected', got '$resp_msg'"));
    };

    if ($@) {
      $ex = $@;
    }

    $wfh->print("done\n");
    $wfh->flush();

  } else {
    eval { server_wait($config_file, $rfh) };
    if ($@) {
      warn($@);
      exit 1;
    }

    exit 0;
  }

  # Stop server
  server_stop($pid_file);

  $self->assert_child_ok($pid);

  if ($ex) {
    test_append_logfile($log_file, $ex);
    unlink($log_file);

    die($ex);
  }

  unlink($log_file);
}

sub lang_lang_default_en_US {
  my $self = shift;
  my $tmpdir = $self->{tmpdir};

  my $config_file = "$tmpdir/lang.conf";
  my $pid_file = File::Spec->rel2abs("$tmpdir/lang.pid");
  my $scoreboard_file = File::Spec->rel2abs("$tmpdir/lang.scoreboard");

  my $log_file = test_get_logfile();

  my $auth_user_file = File::Spec->rel2abs("$tmpdir/lang.passwd");
  my $auth_group_file = File::Spec->rel2abs("$tmpdir/lang.group");

  my $user = 'proftpd';
  my $passwd = 'test';
  my $group = 'ftpd';
  my $home_dir = File::Spec->rel2abs($tmpdir);
  my $uid = 500;
  my $gid = 500;

  # Make sure that, if we're running as root, that the home directory has
  # permissions/privs set for the account we create
  if ($< == 0) {
    unless (chmod(0755, $home_dir)) {
      die("Can't set perms on $home_dir to 0755: $!");
    }

    unless (chown($uid, $gid, $home_dir)) {
      die("Can't set owner of $home_dir to $uid/$gid: $!");
    }
  }

  auth_user_write($auth_user_file, $user, $passwd, $uid, $gid, $home_dir,
    '/bin/bash');
  auth_group_write($auth_group_file, $group, $gid, $user);

  # Copy the en_US.mo file from the locale/ directory into a directory
  # that we can tell mod_lang to find.

  my $lang_path = File::Spec->rel2abs("$tmpdir/locale");
  mkpath("$lang_path/en_US/LC_MESSAGES");

  copy("../locale/en_US.mo", "$lang_path/en_US/LC_MESSAGES/proftpd.mo");

  my $config = {
    PidFile => $pid_file,
    ScoreboardFile => $scoreboard_file,
    SystemLog => $log_file,

    AuthUserFile => $auth_user_file,
    AuthGroupFile => $auth_group_file,
    AuthOrder => 'mod_auth_file.c',

    IfModules => {
      'mod_delay.c' => {
        DelayEngine => 'off',
      },

      'mod_lang.c' => {
        LangPath => $lang_path,
        LangDefault => 'en_US',
      },
    },
  };

  my ($port, $config_user, $config_group) = config_write($config_file, $config);

  # Open pipes, for use between the parent and child processes.  Specifically,
  # the child will indicate when it's done with its test by writing a message
  # to the parent.
  my ($rfh, $wfh);
  unless (pipe($rfh, $wfh)) {
    die("Can't open pipe: $!");
  }

  my $ex;

  # Fork child
  $self->handle_sigchld();
  defined(my $pid = fork()) or die("Can't fork: $!");
  if ($pid) {
    eval {
      my $client = ProFTPD::TestSuite::FTP->new('127.0.0.1', $port);
      my ($resp_code, $resp_msg) = $client->user($user);

      my $expected;

      $expected = 331;
      $self->assert($expected == $resp_code,
        test_msg("Expected $expected, got $resp_code"));

      $expected = "Password required for $user";
      $self->assert($expected eq $resp_msg,
        test_msg("Expected '$expected', got '$resp_msg'"));
    };

    if ($@) {
      $ex = $@;
    }

    $wfh->print("done\n");
    $wfh->flush();

  } else {
    eval { server_wait($config_file, $rfh) };
    if ($@) {
      warn($@);
      exit 1;
    }

    exit 0;
  }

  # Stop server
  server_stop($pid_file);

  $self->assert_child_ok($pid);

  if ($ex) {
    test_append_logfile($log_file, $ex);
    unlink($log_file);

    die($ex);
  }

  unlink($log_file);
}

sub lang_lang_default_en_US_UTF8 {
  my $self = shift;
  my $tmpdir = $self->{tmpdir};

  my $config_file = "$tmpdir/lang.conf";
  my $pid_file = File::Spec->rel2abs("$tmpdir/lang.pid");
  my $scoreboard_file = File::Spec->rel2abs("$tmpdir/lang.scoreboard");

  my $log_file = test_get_logfile();

  my $auth_user_file = File::Spec->rel2abs("$tmpdir/lang.passwd");
  my $auth_group_file = File::Spec->rel2abs("$tmpdir/lang.group");

  my $user = 'proftpd';
  my $passwd = 'test';
  my $group = 'ftpd';
  my $home_dir = File::Spec->rel2abs($tmpdir);
  my $uid = 500;
  my $gid = 500;

  # Make sure that, if we're running as root, that the home directory has
  # permissions/privs set for the account we create
  if ($< == 0) {
    unless (chmod(0755, $home_dir)) {
      die("Can't set perms on $home_dir to 0755: $!");
    }

    unless (chown($uid, $gid, $home_dir)) {
      die("Can't set owner of $home_dir to $uid/$gid: $!");
    }
  }

  auth_user_write($auth_user_file, $user, $passwd, $uid, $gid, $home_dir,
    '/bin/bash');
  auth_group_write($auth_group_file, $group, $gid, $user);

  # Copy the en_US.mo file from the locale/ directory into a directory
  # that we can tell mod_lang to find.

  my $lang_path = File::Spec->rel2abs("$tmpdir/locale");
  mkpath("$lang_path/en_US/LC_MESSAGES");

  copy("../locale/en_US.mo", "$lang_path/en_US/LC_MESSAGES/proftpd.mo");

  my $config = {
    PidFile => $pid_file,
    ScoreboardFile => $scoreboard_file,
    SystemLog => $log_file,

    AuthUserFile => $auth_user_file,
    AuthGroupFile => $auth_group_file,
    AuthOrder => 'mod_auth_file.c',

    IfModules => {
      'mod_delay.c' => {
        DelayEngine => 'off',
      },

      'mod_lang.c' => {
        LangPath => $lang_path,
        LangDefault => 'en_US.UTF-8',
      },
    },
  };

  my ($port, $config_user, $config_group) = config_write($config_file, $config);

  # Open pipes, for use between the parent and child processes.  Specifically,
  # the child will indicate when it's done with its test by writing a message
  # to the parent.
  my ($rfh, $wfh);
  unless (pipe($rfh, $wfh)) {
    die("Can't open pipe: $!");
  }

  my $ex;

  # Fork child
  $self->handle_sigchld();
  defined(my $pid = fork()) or die("Can't fork: $!");
  if ($pid) {
    eval {
      my $client = ProFTPD::TestSuite::FTP->new('127.0.0.1', $port);
      my ($resp_code, $resp_msg) = $client->user($user);

      my $expected;

      $expected = 331;
      $self->assert($expected == $resp_code,
        test_msg("Expected $expected, got $resp_code"));

      $expected = "Password required for $user";
      $self->assert($expected eq $resp_msg,
        test_msg("Expected '$expected', got '$resp_msg'"));
    };

    if ($@) {
      $ex = $@;
    }

    $wfh->print("done\n");
    $wfh->flush();

  } else {
    eval { server_wait($config_file, $rfh) };
    if ($@) {
      warn($@);
      exit 1;
    }

    exit 0;
  }

  # Stop server
  server_stop($pid_file);

  $self->assert_child_ok($pid);

  if ($ex) {
    test_append_logfile($log_file, $ex);
    unlink($log_file);

    die($ex);
  }

  unlink($log_file);
}

sub lang_opts_utf8_useencoding_on {
  my $self = shift;
  my $tmpdir = $self->{tmpdir};

  my $config_file = "$tmpdir/lang.conf";
  my $pid_file = File::Spec->rel2abs("$tmpdir/lang.pid");
  my $scoreboard_file = File::Spec->rel2abs("$tmpdir/lang.scoreboard");

  my $log_file = test_get_logfile();

  my $auth_user_file = File::Spec->rel2abs("$tmpdir/lang.passwd");
  my $auth_group_file = File::Spec->rel2abs("$tmpdir/lang.group");

  my $user = 'proftpd';
  my $passwd = 'test';
  my $group = 'ftpd';
  my $home_dir = File::Spec->rel2abs($tmpdir);
  my $uid = 500;
  my $gid = 500;

  # Make sure that, if we're running as root, that the home directory has
  # permissions/privs set for the account we create
  if ($< == 0) {
    unless (chmod(0755, $home_dir)) {
      die("Can't set perms on $home_dir to 0755: $!");
    }

    unless (chown($uid, $gid, $home_dir)) {
      die("Can't set owner of $home_dir to $uid/$gid: $!");
    }
  }

  auth_user_write($auth_user_file, $user, $passwd, $uid, $gid, $home_dir,
    '/bin/bash');
  auth_group_write($auth_group_file, $group, $gid, $user);

  my $config = {
    PidFile => $pid_file,
    ScoreboardFile => $scoreboard_file,
    SystemLog => $log_file,

    AuthUserFile => $auth_user_file,
    AuthGroupFile => $auth_group_file,
    AuthOrder => 'mod_auth_file.c',

    IfModules => {
      'mod_delay.c' => {
        DelayEngine => 'off',
      },

      'mod_lang.c' => {
        UseEncoding => 'on',
      },
    },
  };

  my ($port, $config_user, $config_group) = config_write($config_file, $config);

  # Open pipes, for use between the parent and child processes.  Specifically,
  # the child will indicate when it's done with its test by writing a message
  # to the parent.
  my ($rfh, $wfh);
  unless (pipe($rfh, $wfh)) {
    die("Can't open pipe: $!");
  }

  my $ex;

  # Fork child
  $self->handle_sigchld();
  defined(my $pid = fork()) or die("Can't fork: $!");
  if ($pid) {
    eval {
      my $client = ProFTPD::TestSuite::FTP->new('127.0.0.1', $port);

      eval { $client->opts('UTF8', 'off') };
      unless ($@) {
        die("OPTS UTF8 off succeeded unexpectedly");
      }

      my $resp_code = $client->response_code();
      my $resp_msg = $client->response_msg();

      my $expected;

      $expected = 451;
      $self->assert($expected == $resp_code,
        test_msg("Expected response code $expected, got $resp_code"));

      $expected = 'Unable to accept OPTS UTF8';
      $self->assert($expected eq $resp_msg,
        test_msg("Expected response message '$expected', got '$resp_msg'"));

      ($resp_code, $resp_msg) = $client->opts('UTF8', 'on');

      $expected = 200;
      $self->assert($expected == $resp_code,
        test_msg("Expected response code $expected, got $resp_code"));

      $expected = 'UTF8 set to on';
      $self->assert($expected eq $resp_msg,
        test_msg("Expected '$expected', got '$resp_msg'"));
    };

    if ($@) {
      $ex = $@;
    }

    $wfh->print("done\n");
    $wfh->flush();

  } else {
    eval { server_wait($config_file, $rfh) };
    if ($@) {
      warn($@);
      exit 1;
    }

    exit 0;
  }

  # Stop server
  server_stop($pid_file);

  $self->assert_child_ok($pid);

  if ($ex) {
    test_append_logfile($log_file, $ex);
    unlink($log_file);

    die($ex);
  }

  unlink($log_file);
}

sub lang_opts_utf8_useencoding_off {
  my $self = shift;
  my $tmpdir = $self->{tmpdir};

  my $config_file = "$tmpdir/lang.conf";
  my $pid_file = File::Spec->rel2abs("$tmpdir/lang.pid");
  my $scoreboard_file = File::Spec->rel2abs("$tmpdir/lang.scoreboard");

  my $log_file = test_get_logfile();

  my $auth_user_file = File::Spec->rel2abs("$tmpdir/lang.passwd");
  my $auth_group_file = File::Spec->rel2abs("$tmpdir/lang.group");

  my $user = 'proftpd';
  my $passwd = 'test';
  my $group = 'ftpd';
  my $home_dir = File::Spec->rel2abs($tmpdir);
  my $uid = 500;
  my $gid = 500;

  # Make sure that, if we're running as root, that the home directory has
  # permissions/privs set for the account we create
  if ($< == 0) {
    unless (chmod(0755, $home_dir)) {
      die("Can't set perms on $home_dir to 0755: $!");
    }

    unless (chown($uid, $gid, $home_dir)) {
      die("Can't set owner of $home_dir to $uid/$gid: $!");
    }
  }

  auth_user_write($auth_user_file, $user, $passwd, $uid, $gid, $home_dir,
    '/bin/bash');
  auth_group_write($auth_group_file, $group, $gid, $user);

  my $config = {
    PidFile => $pid_file,
    ScoreboardFile => $scoreboard_file,
    SystemLog => $log_file,

    AuthUserFile => $auth_user_file,
    AuthGroupFile => $auth_group_file,
    AuthOrder => 'mod_auth_file.c',

    IfModules => {
      'mod_delay.c' => {
        DelayEngine => 'off',
      },

      'mod_lang.c' => {
        UseEncoding => 'off',
      },
    },
  };

  my ($port, $config_user, $config_group) = config_write($config_file, $config);

  # Open pipes, for use between the parent and child processes.  Specifically,
  # the child will indicate when it's done with its test by writing a message
  # to the parent.
  my ($rfh, $wfh);
  unless (pipe($rfh, $wfh)) {
    die("Can't open pipe: $!");
  }

  my $ex;

  # Fork child
  $self->handle_sigchld();
  defined(my $pid = fork()) or die("Can't fork: $!");
  if ($pid) {
    eval {
      my $client = ProFTPD::TestSuite::FTP->new('127.0.0.1', $port);

      my ($resp_code, $resp_msg);

      ($resp_code, $resp_msg) = $client->opts('UTF8', 'off');

      my $expected;

      $expected = 200;
      $self->assert($expected == $resp_code,
        test_msg("Expected $expected, got $resp_code"));

      $expected = 'UTF8 set to off';
      $self->assert($expected eq $resp_msg,
        test_msg("Expected '$expected', got '$resp_msg'"));

      $expected = 200;
      $self->assert($expected == $resp_code,
        test_msg("Expected $expected, got $resp_code"));

      eval { $client->opts('UTF8', 'on') };
      unless ($@) {
        die("OPTS UTF8 on succeeded unexpectedly");
      }

      $resp_code = $client->response_code();
      $resp_msg = $client->response_msg();

      $expected = 451;
      $self->assert($expected == $resp_code,
        test_msg("Expected response code $expected, got $resp_code"));

      $expected = 'Unable to accept OPTS UTF8';
      $self->assert($expected eq $resp_msg,
        test_msg("Expected response message '$expected', got '$resp_msg'"));
    };

    if ($@) {
      $ex = $@;
    }

    $wfh->print("done\n");
    $wfh->flush();

  } else {
    eval { server_wait($config_file, $rfh) };
    if ($@) {
      warn($@);
      exit 1;
    }

    exit 0;
  }

  # Stop server
  server_stop($pid_file);

  $self->assert_child_ok($pid);

  if ($ex) {
    test_append_logfile($log_file, $ex);
    unlink($log_file);

    die($ex);
  }

  unlink($log_file);
}

sub lang_opts_utf8_useencoding_charsets {
  my $self = shift;
  my $tmpdir = $self->{tmpdir};

  my $config_file = "$tmpdir/lang.conf";
  my $pid_file = File::Spec->rel2abs("$tmpdir/lang.pid");
  my $scoreboard_file = File::Spec->rel2abs("$tmpdir/lang.scoreboard");

  my $log_file = test_get_logfile();

  my $auth_user_file = File::Spec->rel2abs("$tmpdir/lang.passwd");
  my $auth_group_file = File::Spec->rel2abs("$tmpdir/lang.group");

  my $user = 'proftpd';
  my $passwd = 'test';
  my $group = 'ftpd';
  my $home_dir = File::Spec->rel2abs($tmpdir);
  my $uid = 500;
  my $gid = 500;

  # Make sure that, if we're running as root, that the home directory has
  # permissions/privs set for the account we create
  if ($< == 0) {
    unless (chmod(0755, $home_dir)) {
      die("Can't set perms on $home_dir to 0755: $!");
    }

    unless (chown($uid, $gid, $home_dir)) {
      die("Can't set owner of $home_dir to $uid/$gid: $!");
    }
  }

  auth_user_write($auth_user_file, $user, $passwd, $uid, $gid, $home_dir,
    '/bin/bash');
  auth_group_write($auth_group_file, $group, $gid, $user);

  my $config = {
    PidFile => $pid_file,
    ScoreboardFile => $scoreboard_file,
    SystemLog => $log_file,
    TraceLog => $log_file,
    Trace => 'encode:10',

    AuthUserFile => $auth_user_file,
    AuthGroupFile => $auth_group_file,
    AuthOrder => 'mod_auth_file.c',

    IfModules => {
      'mod_delay.c' => {
        DelayEngine => 'off',
      },

      'mod_lang.c' => {
        UseEncoding => 'iso-8859-1 iso-8859-1',
      },
    },
  };

  my ($port, $config_user, $config_group) = config_write($config_file, $config);

  # Open pipes, for use between the parent and child processes.  Specifically,
  # the child will indicate when it's done with its test by writing a message
  # to the parent.
  my ($rfh, $wfh);
  unless (pipe($rfh, $wfh)) {
    die("Can't open pipe: $!");
  }

  my $ex;

  # Fork child
  $self->handle_sigchld();
  defined(my $pid = fork()) or die("Can't fork: $!");
  if ($pid) {
    eval {
      my $client = ProFTPD::TestSuite::FTP->new('127.0.0.1', $port);
      my ($resp_code, $resp_msg) = $client->opts('UTF8', 'off');

      my $expected;

      $expected = 200;
      $self->assert($expected == $resp_code,
        test_msg("Expected response code $expected, got $resp_code"));

      $expected = 'UTF8 set to off';
      $self->assert($expected eq $resp_msg,
        test_msg("Expected response message '$expected', got '$resp_msg'"));

      ($resp_code, $resp_msg) = $client->opts('UTF8', 'on');

      $expected = 200;
      $self->assert($expected == $resp_code,
        test_msg("Expected response code $expected, got $resp_code"));

      $expected = 'UTF8 set to on';
      $self->assert($expected eq $resp_msg,
        test_msg("Expected response message '$expected', got '$resp_msg'"));
    };

    if ($@) {
      $ex = $@;
    }

    $wfh->print("done\n");
    $wfh->flush();

  } else {
    eval { server_wait($config_file, $rfh) };
    if ($@) {
      warn($@);
      exit 1;
    }

    exit 0;
  }

  # Stop server
  server_stop($pid_file);

  $self->assert_child_ok($pid);

  if ($ex) {
    test_append_logfile($log_file, $ex);
    unlink($log_file);

    die($ex);
  }

  unlink($log_file);
}

sub lang_opts_utf8_useencoding_charsets_strict {
  my $self = shift;
  my $tmpdir = $self->{tmpdir};

  my $config_file = "$tmpdir/lang.conf";
  my $pid_file = File::Spec->rel2abs("$tmpdir/lang.pid");
  my $scoreboard_file = File::Spec->rel2abs("$tmpdir/lang.scoreboard");

  my $log_file = test_get_logfile();

  my $auth_user_file = File::Spec->rel2abs("$tmpdir/lang.passwd");
  my $auth_group_file = File::Spec->rel2abs("$tmpdir/lang.group");

  my $user = 'proftpd';
  my $passwd = 'test';
  my $group = 'ftpd';
  my $home_dir = File::Spec->rel2abs($tmpdir);
  my $uid = 500;
  my $gid = 500;

  # Make sure that, if we're running as root, that the home directory has
  # permissions/privs set for the account we create
  if ($< == 0) {
    unless (chmod(0755, $home_dir)) {
      die("Can't set perms on $home_dir to 0755: $!");
    }

    unless (chown($uid, $gid, $home_dir)) {
      die("Can't set owner of $home_dir to $uid/$gid: $!");
    }
  }

  auth_user_write($auth_user_file, $user, $passwd, $uid, $gid, $home_dir,
    '/bin/bash');
  auth_group_write($auth_group_file, $group, $gid, $user);

  my $config = {
    PidFile => $pid_file,
    ScoreboardFile => $scoreboard_file,
    SystemLog => $log_file,
    TraceLog => $log_file,
    Trace => 'encode:10',

    AuthUserFile => $auth_user_file,
    AuthGroupFile => $auth_group_file,
    AuthOrder => 'mod_auth_file.c',

    IfModules => {
      'mod_delay.c' => {
        DelayEngine => 'off',
      },

      'mod_lang.c' => {
        UseEncoding => 'iso-8859-1 iso-8859-1 strict',
      },
    },
  };

  my ($port, $config_user, $config_group) = config_write($config_file, $config);

  # Open pipes, for use between the parent and child processes.  Specifically,
  # the child will indicate when it's done with its test by writing a message
  # to the parent.
  my ($rfh, $wfh);
  unless (pipe($rfh, $wfh)) {
    die("Can't open pipe: $!");
  }

  my $ex;

  # Fork child
  $self->handle_sigchld();
  defined(my $pid = fork()) or die("Can't fork: $!");
  if ($pid) {
    eval {
      my $client = ProFTPD::TestSuite::FTP->new('127.0.0.1', $port);

      # Make sure the OPTS UTF8 command does not appear in the FEAT listing;
      # see Bug#3737.
      $client->feat();
      my $resp_code = $client->response_code();
      my $resp_msgs = $client->response_msgs();

      my $expected;

      $expected = 211;
      $self->assert($expected == $resp_code,
        test_msg("Expected response code $expected, got $resp_code"));

      foreach my $feat (@$resp_msgs) {
        if ($feat =~ /^ UTF8$/) {
          die("'$feat' feature listed unexpectedly via FEAT");
        }
      }

      my $resp_msg;
      ($resp_code, $resp_msg) = $client->opts('UTF8', 'off');

      $expected = 200;
      $self->assert($expected == $resp_code,
        test_msg("Expected response code $expected, got $resp_code"));

      $expected = 'UTF8 set to off';
      $self->assert($expected eq $resp_msg,
        test_msg("Expected response message '$expected', got '$resp_msg'"));

      eval { $client->opts('UTF8', 'on') };
      unless ($@) {
        die("OPTS UTF8 on succeeded unexpectedly");
      }

      $resp_code = $client->response_code();
      $resp_msg = $client->response_msg();

      $expected = 451;
      $self->assert($expected == $resp_code,
        test_msg("Expected response code $expected, got $resp_code"));

      $expected = 'Unable to accept OPTS UTF8';
      $self->assert($expected eq $resp_msg,
        test_msg("Expected response message '$expected', got '$resp_msg'"));
    };

    if ($@) {
      $ex = $@;
    }

    $wfh->print("done\n");
    $wfh->flush();

  } else {
    eval { server_wait($config_file, $rfh) };
    if ($@) {
      warn($@);
      exit 1;
    }

    exit 0;
  }

  # Stop server
  server_stop($pid_file);

  $self->assert_child_ok($pid);

  if ($ex) {
    test_append_logfile($log_file, $ex);
    unlink($log_file);

    die($ex);
  }

  unlink($log_file);
}

sub lang_opts_utf8_useencoding_charsets_strict_with_utf8 {
  my $self = shift;
  my $tmpdir = $self->{tmpdir};

  my $config_file = "$tmpdir/lang.conf";
  my $pid_file = File::Spec->rel2abs("$tmpdir/lang.pid");
  my $scoreboard_file = File::Spec->rel2abs("$tmpdir/lang.scoreboard");

  my $log_file = test_get_logfile();

  my $auth_user_file = File::Spec->rel2abs("$tmpdir/lang.passwd");
  my $auth_group_file = File::Spec->rel2abs("$tmpdir/lang.group");

  my $user = 'proftpd';
  my $passwd = 'test';
  my $group = 'ftpd';
  my $home_dir = File::Spec->rel2abs($tmpdir);
  my $uid = 500;
  my $gid = 500;

  # Make sure that, if we're running as root, that the home directory has
  # permissions/privs set for the account we create
  if ($< == 0) {
    unless (chmod(0755, $home_dir)) {
      die("Can't set perms on $home_dir to 0755: $!");
    }

    unless (chown($uid, $gid, $home_dir)) {
      die("Can't set owner of $home_dir to $uid/$gid: $!");
    }
  }

  auth_user_write($auth_user_file, $user, $passwd, $uid, $gid, $home_dir,
    '/bin/bash');
  auth_group_write($auth_group_file, $group, $gid, $user);

  my $config = {
    PidFile => $pid_file,
    ScoreboardFile => $scoreboard_file,
    SystemLog => $log_file,
    TraceLog => $log_file,
    Trace => 'encode:10',

    AuthUserFile => $auth_user_file,
    AuthGroupFile => $auth_group_file,
    AuthOrder => 'mod_auth_file.c',

    IfModules => {
      'mod_delay.c' => {
        DelayEngine => 'off',
      },

      'mod_lang.c' => {
        UseEncoding => 'iso-8859-1 utf-8 strict',
      },
    },
  };

  my ($port, $config_user, $config_group) = config_write($config_file, $config);

  # Open pipes, for use between the parent and child processes.  Specifically,
  # the child will indicate when it's done with its test by writing a message
  # to the parent.
  my ($rfh, $wfh);
  unless (pipe($rfh, $wfh)) {
    die("Can't open pipe: $!");
  }

  my $ex;

  # Fork child
  $self->handle_sigchld();
  defined(my $pid = fork()) or die("Can't fork: $!");
  if ($pid) {
    eval {
      my $client = ProFTPD::TestSuite::FTP->new('127.0.0.1', $port);

      # Make sure the OPTS UTF8 command does not appear in the FEAT listing;
      # see Bug#3737.
      $client->feat();
      my $resp_code = $client->response_code();
      my $resp_msgs = $client->response_msgs();

      my $expected;

      $expected = 211;
      $self->assert($expected == $resp_code,
        test_msg("Expected response code $expected, got $resp_code"));

      # Since our strict UseEncoding expects UTF8, we should see UTF8
      # listed in the FEAT output (see Bug#3737).
      my $have_utf8 = 0;
      foreach my $feat (@$resp_msgs) {
        if ($feat =~ /^ UTF8$/) {
          $have_utf8 = 1;
          last;
        }
      }

      $self->assert($have_utf8,
        test_msg("UTF8 feature not listed as expected via FEAT"));

      eval { $client->opts('UTF8', 'off') };
      unless ($@) {
        die("OPTS UTF8 off succeeded unexpectedly");
      }

      $resp_code = $client->response_code();
      my $resp_msg = $client->response_msg();

      $expected = 451;
      $self->assert($expected == $resp_code,
        test_msg("Expected response code $expected, got $resp_code"));

      $expected = 'Unable to accept OPTS UTF8';
      $self->assert($expected eq $resp_msg,
        test_msg("Expected response message '$expected', got '$resp_msg'"));

      ($resp_code, $resp_msg) = $client->opts('UTF8', 'on');

      $expected = 200;
      $self->assert($expected == $resp_code,
        test_msg("Expected response code $expected, got $resp_code"));

      $expected = 'UTF8 set to on';
      $self->assert($expected eq $resp_msg,
        test_msg("Expected response message '$expected', got '$resp_msg'"));
    };

    if ($@) {
      $ex = $@;
    }

    $wfh->print("done\n");
    $wfh->flush();

  } else {
    eval { server_wait($config_file, $rfh) };
    if ($@) {
      warn($@);
      exit 1;
    }

    exit 0;
  }

  # Stop server
  server_stop($pid_file);

  $self->assert_child_ok($pid);

  if ($ex) {
    test_append_logfile($log_file, $ex);
    unlink($log_file);

    die($ex);
  }

  unlink($log_file);
}

sub lang_opts_utf8_useencoding_charsets_with_env {
  my $self = shift;
  my $tmpdir = $self->{tmpdir};

  my $config_file = "$tmpdir/lang.conf";
  my $pid_file = File::Spec->rel2abs("$tmpdir/lang.pid");
  my $scoreboard_file = File::Spec->rel2abs("$tmpdir/lang.scoreboard");

  my $log_file = test_get_logfile();

  my $auth_user_file = File::Spec->rel2abs("$tmpdir/lang.passwd");
  my $auth_group_file = File::Spec->rel2abs("$tmpdir/lang.group");

  my $user = 'proftpd';
  my $passwd = 'test';
  my $group = 'ftpd';
  my $home_dir = File::Spec->rel2abs($tmpdir);
  my $uid = 500;
  my $gid = 500;

  # Make sure that, if we're running as root, that the home directory has
  # permissions/privs set for the account we create
  if ($< == 0) {
    unless (chmod(0755, $home_dir)) {
      die("Can't set perms on $home_dir to 0755: $!");
    }

    unless (chown($uid, $gid, $home_dir)) {
      die("Can't set owner of $home_dir to $uid/$gid: $!");
    }
  }

  auth_user_write($auth_user_file, $user, $passwd, $uid, $gid, $home_dir,
    '/bin/bash');
  auth_group_write($auth_group_file, $group, $gid, $user);

  # Copy the en_US.mo file from the locale/ directory into a directory
  # that we can tell mod_lang to find.

  my $lang_path = File::Spec->rel2abs("$tmpdir/locale");
  mkpath("$lang_path/en_US/LC_MESSAGES");

  copy("../locale/en_US.mo", "$lang_path/en_US/LC_MESSAGES/proftpd.mo");

  my $config = {
    PidFile => $pid_file,
    ScoreboardFile => $scoreboard_file,
    SystemLog => $log_file,
    TraceLog => $log_file,
    Trace => 'encode:10',

    AuthUserFile => $auth_user_file,
    AuthGroupFile => $auth_group_file,
    AuthOrder => 'mod_auth_file.c',

    IfModules => {
      'mod_delay.c' => {
        DelayEngine => 'off',
      },

      'mod_lang.c' => {
        UseEncoding => 'iso-8859-1 iso-8859-1',
      },
    },
  };

  my ($port, $config_user, $config_group) = config_write($config_file, $config);

  # Open pipes, for use between the parent and child processes.  Specifically,
  # the child will indicate when it's done with its test by writing a message
  # to the parent.
  my ($rfh, $wfh);
  unless (pipe($rfh, $wfh)) {
    die("Can't open pipe: $!");
  }

  my $ex;

  # Fork child
  $self->handle_sigchld();
  defined(my $pid = fork()) or die("Can't fork: $!");
  if ($pid) {
    eval {
      my $client = ProFTPD::TestSuite::FTP->new('127.0.0.1', $port);
      my ($resp_code, $resp_msg) = $client->opts('UTF8', 'on');

      my $expected;

      $expected = 200;
      $self->assert($expected == $resp_code,
        test_msg("Expected response code $expected, got $resp_code"));

      $expected = 'UTF8 set to on';
      $self->assert($expected eq $resp_msg,
        test_msg("Expected response message '$expected', got '$resp_msg'"));

      ($resp_code, $resp_msg) = $client->opts('UTF8', 'on');

      $expected = 200;
      $self->assert($expected == $resp_code,
        test_msg("Expected response code $expected, got $resp_code"));

      $expected = 'UTF8 set to on';
      $self->assert($expected eq $resp_msg,
        test_msg("Expected response message '$expected', got '$resp_msg'"));
    };

    if ($@) {
      $ex = $@;
    }

    $wfh->print("done\n");
    $wfh->flush();

  } else {
    # Before we start the server, set the LANG environment variable to
    # something like "en_US.utf8", see what happens.
    #
    # Note: The list of allowed values here should be dynamically determined
    # by calling `locale -a'.
    $ENV{LANG} = "en_US.utf8";

    eval { server_wait($config_file, $rfh) };
    if ($@) {
      warn($@);
      exit 1;
    }

    exit 0;
  }

  # Stop server
  server_stop($pid_file);

  $self->assert_child_ok($pid);

  if ($ex) {
    test_append_logfile($log_file, $ex);
    unlink($log_file);

    die($ex);
  }

  unlink($log_file);
}

sub lang_useencoding_latin1_utf8 {
  my $self = shift;
  my $tmpdir = $self->{tmpdir};

  my $config_file = "$tmpdir/lang.conf";
  my $pid_file = File::Spec->rel2abs("$tmpdir/lang.pid");
  my $scoreboard_file = File::Spec->rel2abs("$tmpdir/lang.scoreboard");

  my $log_file = test_get_logfile();

  my $auth_user_file = File::Spec->rel2abs("$tmpdir/lang.passwd");
  my $auth_group_file = File::Spec->rel2abs("$tmpdir/lang.group");

  my $user = 'proftpd';
  my $passwd = 'test';
  my $group = 'ftpd';
  my $home_dir = File::Spec->rel2abs($tmpdir);
  my $uid = 500;
  my $gid = 500;

  # Make sure that, if we're running as root, that the home directory has
  # permissions/privs set for the account we create
  if ($< == 0) {
    unless (chmod(0755, $home_dir)) {
      die("Can't set perms on $home_dir to 0755: $!");
    }

    unless (chown($uid, $gid, $home_dir)) {
      die("Can't set owner of $home_dir to $uid/$gid: $!");
    }
  }

  auth_user_write($auth_user_file, $user, $passwd, $uid, $gid, $home_dir,
    '/bin/bash');
  auth_group_write($auth_group_file, $group, $gid, $user);

  my $test_file = File::Spec->rel2abs("$home_dir/Ã¼Ã¶Ã¤");

  my $config = {
    PidFile => $pid_file,
    ScoreboardFile => $scoreboard_file,
    SystemLog => $log_file,
    TraceLog => $log_file,
    Trace => 'encode:20',

    AuthUserFile => $auth_user_file,
    AuthGroupFile => $auth_group_file,
    AuthOrder => 'mod_auth_file.c',

    IfModules => {
      'mod_delay.c' => {
        DelayEngine => 'off',
      },

      'mod_lang.c' => {
        UseEncoding => 'utf-8 iso-8859-1',
      },
    },
  };

  my ($port, $config_user, $config_group) = config_write($config_file, $config);

  # Open pipes, for use between the parent and child processes.  Specifically,
  # the child will indicate when it's done with its test by writing a message
  # to the parent.
  my ($rfh, $wfh);
  unless (pipe($rfh, $wfh)) {
    die("Can't open pipe: $!");
  }

  my $ex;

  # Fork child
  $self->handle_sigchld();
  defined(my $pid = fork()) or die("Can't fork: $!");
  if ($pid) {
    eval {
      my $client = ProFTPD::TestSuite::FTP->new('127.0.0.1', $port);
      $client->login($user, $passwd);

      my $name = "üöä";

      my $conn = $client->stor_raw($name);
      unless ($conn) {
        die("STOR $name failed: " . $client->response_code() . " " .
          $client->response_msg());
      }

      my $buf = "Hello, world\n";
      $conn->write($buf, length($buf), 15);
      eval { $conn->close() };

      my $resp_code = $client->response_code();
      my $resp_msg = $client->response_msg();
      $self->assert_transfer_ok($resp_code, $resp_msg);

      $client->quit();

      $self->assert(-f $test_file,
        test_msg("File $test_file does not exist as expected"));
    };

    if ($@) {
      $ex = $@;
    }

    $wfh->print("done\n");
    $wfh->flush();

  } else {
    eval { server_wait($config_file, $rfh) };
    if ($@) {
      warn($@);
      exit 1;
    }

    exit 0;
  }

  # Stop server
  server_stop($pid_file);

  $self->assert_child_ok($pid);

  if ($ex) {
    test_append_logfile($log_file, $ex);
    unlink($log_file);

    die($ex);
  }

  unlink($log_file);
}

sub lang_useencoding_utf8_latin1 {
  my $self = shift;
  my $tmpdir = $self->{tmpdir};

  my $config_file = "$tmpdir/lang.conf";
  my $pid_file = File::Spec->rel2abs("$tmpdir/lang.pid");
  my $scoreboard_file = File::Spec->rel2abs("$tmpdir/lang.scoreboard");

  my $log_file = test_get_logfile();

  my $auth_user_file = File::Spec->rel2abs("$tmpdir/lang.passwd");
  my $auth_group_file = File::Spec->rel2abs("$tmpdir/lang.group");

  my $user = 'proftpd';
  my $passwd = 'test';
  my $group = 'ftpd';
  my $home_dir = File::Spec->rel2abs($tmpdir);
  my $uid = 500;
  my $gid = 500;

  # Make sure that, if we're running as root, that the home directory has
  # permissions/privs set for the account we create
  if ($< == 0) {
    unless (chmod(0755, $home_dir)) {
      die("Can't set perms on $home_dir to 0755: $!");
    }

    unless (chown($uid, $gid, $home_dir)) {
      die("Can't set owner of $home_dir to $uid/$gid: $!");
    }
  }

  auth_user_write($auth_user_file, $user, $passwd, $uid, $gid, $home_dir,
    '/bin/bash');
  auth_group_write($auth_group_file, $group, $gid, $user);

  my $test_file = File::Spec->rel2abs("$home_dir/Grafik-ZentrumÃ¤Ã¼u.png");
  if ($^O eq 'darwin') {
    # MacOSX hack
    $test_file = ('/private' . $test_file);
  }

  my $config = {
    PidFile => $pid_file,
    ScoreboardFile => $scoreboard_file,
    SystemLog => $log_file,
    TraceLog => $log_file,
    Trace => 'encode:20',

    AuthUserFile => $auth_user_file,
    AuthGroupFile => $auth_group_file,
    AuthOrder => 'mod_auth_file.c',

    IfModules => {
      'mod_delay.c' => {
        DelayEngine => 'off',
      },

      'mod_lang.c' => {
        UseEncoding => 'utf-8 iso-8859-1',
      },
    },
  };

  my ($port, $config_user, $config_group) = config_write($config_file, $config);

  # Open pipes, for use between the parent and child processes.  Specifically,
  # the child will indicate when it's done with its test by writing a message
  # to the parent.
  my ($rfh, $wfh);
  unless (pipe($rfh, $wfh)) {
    die("Can't open pipe: $!");
  }

  my $ex;

  # Fork child
  $self->handle_sigchld();
  defined(my $pid = fork()) or die("Can't fork: $!");
  if ($pid) {
    eval {
      my $client = ProFTPD::TestSuite::FTP->new('127.0.0.1', $port);
      $client->login($user, $passwd);

      my $name = "Grafik-Zentrumäüu.png";

      my $conn = $client->stor_raw($name);
      unless ($conn) {
        die("STOR $name failed: " . $client->response_code() . " " .
          $client->response_msg());
      }

      my $buf = "Hello, world\n";
      $conn->write($buf, length($buf), 15);
      eval { $conn->close() };

      my $resp_code = $client->response_code();
      my $resp_msg = $client->response_msg();
      $self->assert_transfer_ok($resp_code, $resp_msg);

      $client->quit();

      $self->assert(-f $test_file,
        test_msg("File $test_file does not exist as expected"));
    };

    if ($@) {
      $ex = $@;
    }

    $wfh->print("done\n");
    $wfh->flush();

  } else {
    eval { server_wait($config_file, $rfh) };
    if ($@) {
      warn($@);
      exit 1;
    }

    exit 0;
  }

  # Stop server
  server_stop($pid_file);

  $self->assert_child_ok($pid);

  if ($ex) {
    test_append_logfile($log_file, $ex);
    unlink($log_file);

    die($ex);
  }

  unlink($log_file);
}

sub lang_opts_utf8_prefer_server_encoding_bug4125 {
  my $self = shift;
  my $tmpdir = $self->{tmpdir};

  my $config_file = "$tmpdir/lang.conf";
  my $pid_file = File::Spec->rel2abs("$tmpdir/lang.pid");
  my $scoreboard_file = File::Spec->rel2abs("$tmpdir/lang.scoreboard");

  my $log_file = test_get_logfile();

  my $auth_user_file = File::Spec->rel2abs("$tmpdir/lang.passwd");
  my $auth_group_file = File::Spec->rel2abs("$tmpdir/lang.group");

  my $user = 'proftpd';
  my $passwd = 'test';
  my $group = 'ftpd';
  my $home_dir = File::Spec->rel2abs($tmpdir);
  my $uid = 500;
  my $gid = 500;

  # Make sure that, if we're running as root, that the home directory has
  # permissions/privs set for the account we create
  if ($< == 0) {
    unless (chmod(0755, $home_dir)) {
      die("Can't set perms on $home_dir to 0755: $!");
    }

    unless (chown($uid, $gid, $home_dir)) {
      die("Can't set owner of $home_dir to $uid/$gid: $!");
    }
  }

  auth_user_write($auth_user_file, $user, $passwd, $uid, $gid, $home_dir,
    '/bin/bash');
  auth_group_write($auth_group_file, $group, $gid, $user);

  my $config = {
    PidFile => $pid_file,
    ScoreboardFile => $scoreboard_file,
    SystemLog => $log_file,
    TraceLog => $log_file,
    Trace => 'encode:10',

    AuthUserFile => $auth_user_file,
    AuthGroupFile => $auth_group_file,
    AuthOrder => 'mod_auth_file.c',

    IfModules => {
      'mod_delay.c' => {
        DelayEngine => 'off',
      },

      'mod_lang.c' => {
        LangOptions => 'PreferServerEncoding',
        UseEncoding => 'iso-8859-1 iso-8859-1',
      },
    },
  };

  my ($port, $config_user, $config_group) = config_write($config_file, $config);

  # Open pipes, for use between the parent and child processes.  Specifically,
  # the child will indicate when it's done with its test by writing a message
  # to the parent.
  my ($rfh, $wfh);
  unless (pipe($rfh, $wfh)) {
    die("Can't open pipe: $!");
  }

  my $ex;

  # Fork child
  $self->handle_sigchld();
  defined(my $pid = fork()) or die("Can't fork: $!");
  if ($pid) {
    eval {
      my $client = ProFTPD::TestSuite::FTP->new('127.0.0.1', $port);

      # Make sure the OPTS UTF8 command does not appear in the FEAT listing;
      # see Bug#3737.
      $client->feat();
      my $resp_code = $client->response_code();
      my $resp_msgs = $client->response_msgs();

      my $expected;

      $expected = 211;
      $self->assert($expected == $resp_code,
        test_msg("Expected response code $expected, got $resp_code"));

      foreach my $feat (@$resp_msgs) {
        if ($feat =~ /^ UTF8$/) {
          die("'$feat' feature listed unexpectedly via FEAT");
        }
      }

      my $resp_msg;
      ($resp_code, $resp_msg) = $client->opts('UTF8', 'off');

      $expected = 200;
      $self->assert($expected == $resp_code,
        test_msg("Expected response code $expected, got $resp_code"));

      $expected = 'UTF8 set to off';
      $self->assert($expected eq $resp_msg,
        test_msg("Expected response message '$expected', got '$resp_msg'"));

      eval { $client->opts('UTF8', 'on') };
      unless ($@) {
        die("OPTS UTF8 on succeeded unexpectedly");
      }

      $resp_code = $client->response_code();
      $resp_msg = $client->response_msg();

      $expected = 451;
      $self->assert($expected == $resp_code,
        test_msg("Expected response code $expected, got $resp_code"));

      $expected = 'Unable to accept OPTS UTF8';
      $self->assert($expected eq $resp_msg,
        test_msg("Expected response message '$expected', got '$resp_msg'"));
    };

    if ($@) {
      $ex = $@;
    }

    $wfh->print("done\n");
    $wfh->flush();

  } else {
    eval { server_wait($config_file, $rfh) };
    if ($@) {
      warn($@);
      exit 1;
    }

    exit 0;
  }

  # Stop server
  server_stop($pid_file);

  $self->assert_child_ok($pid);

  if ($ex) {
    test_append_logfile($log_file, $ex);
    unlink($log_file);

    die($ex);
  }

  unlink($log_file);
}

sub lang_opts_utf8_useencoding_charsets_prefer_server_encoding_bug4125 {
  my $self = shift;
  my $tmpdir = $self->{tmpdir};

  my $config_file = "$tmpdir/lang.conf";
  my $pid_file = File::Spec->rel2abs("$tmpdir/lang.pid");
  my $scoreboard_file = File::Spec->rel2abs("$tmpdir/lang.scoreboard");

  my $log_file = test_get_logfile();

  my $auth_user_file = File::Spec->rel2abs("$tmpdir/lang.passwd");
  my $auth_group_file = File::Spec->rel2abs("$tmpdir/lang.group");

  my $user = 'proftpd';
  my $passwd = 'test';
  my $group = 'ftpd';
  my $home_dir = File::Spec->rel2abs($tmpdir);
  my $uid = 500;
  my $gid = 500;

  # Make sure that, if we're running as root, that the home directory has
  # permissions/privs set for the account we create
  if ($< == 0) {
    unless (chmod(0755, $home_dir)) {
      die("Can't set perms on $home_dir to 0755: $!");
    }

    unless (chown($uid, $gid, $home_dir)) {
      die("Can't set owner of $home_dir to $uid/$gid: $!");
    }
  }

  auth_user_write($auth_user_file, $user, $passwd, $uid, $gid, $home_dir,
    '/bin/bash');
  auth_group_write($auth_group_file, $group, $gid, $user);

  my $config = {
    PidFile => $pid_file,
    ScoreboardFile => $scoreboard_file,
    SystemLog => $log_file,
    TraceLog => $log_file,
    Trace => 'encode:10',

    AuthUserFile => $auth_user_file,
    AuthGroupFile => $auth_group_file,
    AuthOrder => 'mod_auth_file.c',

    IfModules => {
      'mod_delay.c' => {
        DelayEngine => 'off',
      },

      'mod_lang.c' => {
        LangOptions => 'PreferServerEncoding',
        UseEncoding => 'iso-8859-1 utf-8',
      },
    },
  };

  my ($port, $config_user, $config_group) = config_write($config_file, $config);

  # Open pipes, for use between the parent and child processes.  Specifically,
  # the child will indicate when it's done with its test by writing a message
  # to the parent.
  my ($rfh, $wfh);
  unless (pipe($rfh, $wfh)) {
    die("Can't open pipe: $!");
  }

  my $ex;

  # Fork child
  $self->handle_sigchld();
  defined(my $pid = fork()) or die("Can't fork: $!");
  if ($pid) {
    eval {
      my $client = ProFTPD::TestSuite::FTP->new('127.0.0.1', $port);

      # Make sure the OPTS UTF8 command does not appear in the FEAT listing;
      # see Bug#3737.
      $client->feat();
      my $resp_code = $client->response_code();
      my $resp_msgs = $client->response_msgs();

      my $expected;

      $expected = 211;
      $self->assert($expected == $resp_code,
        test_msg("Expected response code $expected, got $resp_code"));

      # Since our strict UseEncoding expects UTF8, we should see UTF8
      # listed in the FEAT output (see Bug#3737).
      my $have_utf8 = 0;
      foreach my $feat (@$resp_msgs) {
        if ($feat =~ /^ UTF8$/) {
          $have_utf8 = 1;
          last;
        }
      }

      $self->assert($have_utf8,
        test_msg("UTF8 feature not listed as expected via FEAT"));

      eval { $client->opts('UTF8', 'off') };
      unless ($@) {
        die("OPTS UTF8 off succeeded unexpectedly");
      }

      $resp_code = $client->response_code();
      my $resp_msg = $client->response_msg();

      $expected = 451;
      $self->assert($expected == $resp_code,
        test_msg("Expected response code $expected, got $resp_code"));

      $expected = 'Unable to accept OPTS UTF8';
      $self->assert($expected eq $resp_msg,
        test_msg("Expected response message '$expected', got '$resp_msg'"));

      ($resp_code, $resp_msg) = $client->opts('UTF8', 'on');

      $expected = 200;
      $self->assert($expected == $resp_code,
        test_msg("Expected response code $expected, got $resp_code"));

      $expected = 'UTF8 set to on';
      $self->assert($expected eq $resp_msg,
        test_msg("Expected response message '$expected', got '$resp_msg'"));
    };

    if ($@) {
      $ex = $@;
    }

    $wfh->print("done\n");
    $wfh->flush();

  } else {
    eval { server_wait($config_file, $rfh) };
    if ($@) {
      warn($@);
      exit 1;
    }

    exit 0;
  }

  # Stop server
  server_stop($pid_file);

  $self->assert_child_ok($pid);

  if ($ex) {
    test_append_logfile($log_file, $ex);
    unlink($log_file);

    die($ex);
  }

  unlink($log_file);
}

sub lang_useencoding_ascii_utf8_require_valid_encoding_bug4125 {
  my $self = shift;
  my $tmpdir = $self->{tmpdir};

  my $config_file = "$tmpdir/lang.conf";
  my $pid_file = File::Spec->rel2abs("$tmpdir/lang.pid");
  my $scoreboard_file = File::Spec->rel2abs("$tmpdir/lang.scoreboard");

  my $log_file = test_get_logfile();

  my $auth_user_file = File::Spec->rel2abs("$tmpdir/lang.passwd");
  my $auth_group_file = File::Spec->rel2abs("$tmpdir/lang.group");

  my $user = 'proftpd';
  my $passwd = 'test';
  my $group = 'ftpd';
  my $home_dir = File::Spec->rel2abs($tmpdir);
  my $uid = 500;
  my $gid = 500;

  # Make sure that, if we're running as root, that the home directory has
  # permissions/privs set for the account we create
  if ($< == 0) {
    unless (chmod(0755, $home_dir)) {
      die("Can't set perms on $home_dir to 0755: $!");
    }

    unless (chown($uid, $gid, $home_dir)) {
      die("Can't set owner of $home_dir to $uid/$gid: $!");
    }
  }

  auth_user_write($auth_user_file, $user, $passwd, $uid, $gid, $home_dir,
    '/bin/bash');
  auth_group_write($auth_group_file, $group, $gid, $user);

  my $test_file = File::Spec->rel2abs("$home_dir/Ã¼Ã¶Ã¤");

  my $config = {
    PidFile => $pid_file,
    ScoreboardFile => $scoreboard_file,
    SystemLog => $log_file,
    TraceLog => $log_file,
    Trace => 'encode:20',

    AuthUserFile => $auth_user_file,
    AuthGroupFile => $auth_group_file,
    AuthOrder => 'mod_auth_file.c',

    IfModules => {
      'mod_delay.c' => {
        DelayEngine => 'off',
      },

      'mod_lang.c' => {
        LangOptions => 'RequireValidEncoding',
        UseEncoding => 'utf-8 us-ascii',
      },
    },
  };

  my ($port, $config_user, $config_group) = config_write($config_file, $config);

  # Open pipes, for use between the parent and child processes.  Specifically,
  # the child will indicate when it's done with its test by writing a message
  # to the parent.
  my ($rfh, $wfh);
  unless (pipe($rfh, $wfh)) {
    die("Can't open pipe: $!");
  }

  my $ex;

  # Fork child
  $self->handle_sigchld();
  defined(my $pid = fork()) or die("Can't fork: $!");
  if ($pid) {
    eval {
      my $client = ProFTPD::TestSuite::FTP->new('127.0.0.1', $port);
      $client->login($user, $passwd);

      my $name = "üöä";

      my $conn = $client->stor_raw($name);
      if ($conn) {
        die("STORE $name succeeded unexpectedly");
      }

      my $resp_code = $client->response_code();
      my $resp_msg = $client->response_msg();

      $client->quit();

      my $expected = 550;
      $self->assert($expected == $resp_code,
        test_msg("Expected response code $expected, got $resp_code"));

      $expected = 'Illegal character sequence';
      $self->assert(qr/$expected/, $resp_msg,
        test_msg("Expected response message '$expected', got '$resp_msg'"));
    };

    if ($@) {
      $ex = $@;
    }

    $wfh->print("done\n");
    $wfh->flush();

  } else {
    eval { server_wait($config_file, $rfh) };
    if ($@) {
      warn($@);
      exit 1;
    }

    exit 0;
  }

  # Stop server
  server_stop($pid_file);

  $self->assert_child_ok($pid);

  if ($ex) {
    test_append_logfile($log_file, $ex);
    unlink($log_file);

    die($ex);
  }

  unlink($log_file);
}

sub lang_useencoding_latin1_utf8_per_user_bug4214 {
  my $self = shift;
  my $tmpdir = $self->{tmpdir};
  my $setup = test_setup($tmpdir, 'lang');

  my $test_file = File::Spec->rel2abs("$setup->{home_dir}/Ã¼Ã¶Ã¤");

  my $config = {
    PidFile => $setup->{pid_file},
    ScoreboardFile => $setup->{scoreboard_file},
    SystemLog => $setup->{log_file},
    TraceLog => $setup->{log_file},
    Trace => 'encode:20',

    AuthUserFile => $setup->{auth_user_file},
    AuthGroupFile => $setup->{auth_group_file},
    AuthOrder => 'mod_auth_file.c',

    IfModules => {
      'mod_delay.c' => {
        DelayEngine => 'off',
      },
    },
  };

  my ($port, $config_user, $config_group) = config_write($setup->{config_file},
    $config);

  if (open(my $fh, ">> $setup->{config_file}")) {
    print $fh <<EOC;
<IfModule mod_lang.c>
  <IfUser $setup->{user}>
    UseEncoding utf-8 iso-8859-1
  </IfUser>
</IfModule>
EOC
    unless (close($fh)) {
      die("Can't write $setup->{config_file}: $!");
    }

  } else {
    die("Can't open $setup->{config_file}: $!");
  }

  # Open pipes, for use between the parent and child processes.  Specifically,
  # the child will indicate when it's done with its test by writing a message
  # to the parent.
  my ($rfh, $wfh);
  unless (pipe($rfh, $wfh)) {
    die("Can't open pipe: $!");
  }

  my $ex;

  # Fork child
  $self->handle_sigchld();
  defined(my $pid = fork()) or die("Can't fork: $!");
  if ($pid) {
    eval {
      my $client = ProFTPD::TestSuite::FTP->new('127.0.0.1', $port);
      $client->login($setup->{user}, $setup->{passwd});

      my $name = "üöä";

      my $conn = $client->stor_raw($name);
      unless ($conn) {
        die("STOR $name failed: " . $client->response_code() . " " .
          $client->response_msg());
      }

      my $buf = "Hello, world\n";
      $conn->write($buf, length($buf), 15);
      eval { $conn->close() };

      my $resp_code = $client->response_code();
      my $resp_msg = $client->response_msg();
      $self->assert_transfer_ok($resp_code, $resp_msg);

      $client->quit();

      $self->assert(-f $test_file,
        test_msg("File $test_file does not exist as expected"));
    };

    if ($@) {
      $ex = $@;
    }

    $wfh->print("done\n");
    $wfh->flush();

  } else {
    eval { server_wait($setup->{config_file}, $rfh) };
    if ($@) {
      warn($@);
      exit 1;
    }

    exit 0;
  }

  # Stop server
  server_stop($setup->{pid_file});
  $self->assert_child_ok($pid);
  test_cleanup($setup->{log_file}, $ex);
}

sub lang_useencoding_utf8_latin1_per_user_bug4214 {
  my $self = shift;
  my $tmpdir = $self->{tmpdir};
  my $setup = test_setup($tmpdir, 'lang');

  my $test_file = File::Spec->rel2abs("$setup->{home_dir}/Grafik-ZentrumÃ¤Ã¼u.png");
  if ($^O eq 'darwin') {
    # MacOSX hack
    $test_file = ('/private' . $test_file);
  }

  my $config = {
    PidFile => $setup->{pid_file},
    ScoreboardFile => $setup->{scoreboard_file},
    SystemLog => $setup->{log_file},
    TraceLog => $setup->{log_file},
    Trace => 'encode:20',

    AuthUserFile => $setup->{auth_user_file},
    AuthGroupFile => $setup->{auth_group_file},
    AuthOrder => 'mod_auth_file.c',

    IfModules => {
      'mod_delay.c' => {
        DelayEngine => 'off',
      },
    },
  };

  my ($port, $config_user, $config_group) = config_write($setup->{config_file},
    $config);

  if (open(my $fh, ">> $setup->{config_file}")) {
    print $fh <<EOC;
<IfModule mod_lang.c>
  <IfUser $setup->{user}>
    UseEncoding utf-8 iso-8859-1
  </IfUser>
</IfModule>
EOC
    unless (close($fh)) {
      die("Can't write $setup->{config_file}: $!");
    }

  } else {
    die("Can't open $setup->{config_file}: $!");
  }

  # Open pipes, for use between the parent and child processes.  Specifically,
  # the child will indicate when it's done with its test by writing a message
  # to the parent.
  my ($rfh, $wfh);
  unless (pipe($rfh, $wfh)) {
    die("Can't open pipe: $!");
  }

  my $ex;

  # Fork child
  $self->handle_sigchld();
  defined(my $pid = fork()) or die("Can't fork: $!");
  if ($pid) {
    eval {
      my $client = ProFTPD::TestSuite::FTP->new('127.0.0.1', $port);
      $client->login($setup->{user}, $setup->{passwd});

      my $name = "Grafik-Zentrumäüu.png";

      my $conn = $client->stor_raw($name);
      unless ($conn) {
        die("STOR $name failed: " . $client->response_code() . " " .
          $client->response_msg());
      }

      my $buf = "Hello, world\n";
      $conn->write($buf, length($buf), 15);
      eval { $conn->close() };

      my $resp_code = $client->response_code();
      my $resp_msg = $client->response_msg();
      $self->assert_transfer_ok($resp_code, $resp_msg);

      $client->quit();

      $self->assert(-f $test_file,
        test_msg("File $test_file does not exist as expected"));
    };

    if ($@) {
      $ex = $@;
    }

    $wfh->print("done\n");
    $wfh->flush();

  } else {
    eval { server_wait($setup->{config_file}, $rfh) };
    if ($@) {
      warn($@);
      exit 1;
    }

    exit 0;
  }

  # Stop server
  server_stop($setup->{pid_file});
  $self->assert_child_ok($pid);
  test_cleanup($setup->{log_file}, $ex);
}

1;
