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                <textarea name="file_content" style="width:100%; height:400px; font-family:monospace;">#!/usr/local/cpanel/3rdparty/bin/perl

# cpanel - scripts/setupftpserver                  Copyright 2022 cPanel, L.L.C.
#                                                           All rights reserved.
# copyright@cpanel.net                                         http://cpanel.net
# This code is subject to the cPanel license. Unauthorized copying is prohibited

package scripts::setupftpserver;

use 5.010;
use strict;
use warnings;
use Getopt::Long 2.45 qw(
  GetOptionsFromArray :config auto_version permute
);
use Readonly;

use Cpanel::Config::LoadCpConf       ();
use Cpanel::Config::CpConfGuard      ();
use Cpanel::Chkservd::Manage         ();
use Cpanel::RPM::Versions::Directory ();
use Cpanel::Services::Enabled        ();
use Cpanel::Services::Restart        ();
use Cpanel::PID                      ();
use Cpanel::Init                     ();
use Cpanel::SafeRun::Simple          ();
use Cpanel::Encoder::Tiny            ();
use IO::Handle                       ();

Readonly my @FTP_SERVERS =&gt; qw(pure-ftpd proftpd);

delete @ENV{qw(cp_security_token HTTP_REFERER)};
if ( not caller ) {
    local $| = 1;
    my $script = __PACKAGE__-&gt;new(@ARGV);
    exit $script-&gt;run();
}

sub new {
    my ( $class, @args ) = @_;

    my %attribute;
    $attribute{&#039;&lt;&gt;&#039;} = sub { $attribute{selected_ftpserver} = shift };

    local @ARGV = @args;
    GetOptions(
        \%attribute,
        qw(current force! html! enable-anonymous! &lt;&gt; help),
    ) or usage(1);
    usage(0) if $attribute{help};
    usage(1)
      if not $attribute{current}
      and not $attribute{selected_ftpserver};

    $attribute{cpconf} = Cpanel::Config::LoadCpConf::loadcpconf();
    return bless \%attribute, $class;
}

sub get_current { return shift-&gt;{cpconf}{ftpserver} }

sub run {
    my $self = shift;

    my $current_ftpserver =
      Cpanel::Services::Enabled::is_enabled(&#039;ftpd&#039;)
      ? $self-&gt;get_current
      : &#039;disabled&#039;;

    if ( $self-&gt;{current} ) {
        say &quot;Current FTP server type: $current_ftpserver&quot;;
        return 0;
    }

    if ( !grep { $self-&gt;{selected_ftpserver} eq $_ } ( @FTP_SERVERS, &#039;disabled&#039; ) ) {
        say &quot;Unknown FTP server specified.\nTry $0 --help&quot;;
        return 1;
    }

    if ( !$self-&gt;{force} &amp;&amp; grep { $self-&gt;{selected_ftpserver} eq $_ } @FTP_SERVERS ) {
        my $dir = Cpanel::RPM::Versions::Directory-&gt;new(
            { dont_set_legacy =&gt; 1 },
        );
        my $target_state = $dir-&gt;fetch(
            {
                section =&gt; &#039;target_settings&#039;,
                key     =&gt; $self-&gt;{selected_ftpserver},
            },
        );

        if ( $target_state &amp;&amp; grep { $target_state eq $_ } qw(unmanaged uninstalled) ) {
            my %target_state_msg = (
                unmanaged   =&gt; &#039;flagged to be left alone by cPanel&#039;,
                uninstalled =&gt; &#039;explicitly blocked from installation&#039;,
            );
            print &lt;&lt;&quot;END_TARGET_STATE_MESSAGE&quot;;
WARNING: You are attempting to switch to $self-&gt;{selected_ftpserver}, but it has explicitly been set to $target_state in /var/cpanel/rpm.versions.d/
This means its packages have been $target_state_msg{$target_state}. If this was unintentional, you may be able to remove
this flag by running the following command and then re-running $0

    /usr/local/cpanel/scripts/update_local_rpm_versions --del target_settings.$self-&gt;{selected_ftpserver}

If you meant to do this, please re-run $0 with --force

END_TARGET_STATE_MESSAGE

            return 2;
        }
    }

    die &quot;Conversion process must be performed as root&quot; if $&gt; != 0;

    my $pid_obj = Cpanel::PID-&gt;new(
        { pid_file =&gt; &#039;/var/run/setupftpserver.pid&#039; },
    );
    if ( $pid_obj-&gt;create_pid_file() &lt;= 0 ) {
        print &lt;&lt;END_ALREADY_RUNNING;
$0 appears to be running already.
Please wait for the conversion to finish before attempting another.
END_ALREADY_RUNNING
        return 1;
    }

    # Remove the noanonftp touch file if --enable-anonymous is passed on
    # command line.
    my $no_anon_ftp = &#039;/var/cpanel/noanonftp&#039;;
    if ( $self-&gt;{&#039;enable-anonymous&#039;} and -e $no_anon_ftp ) {
        say &#039;Enabling Anonymous FTP&#039;;
        unlink $no_anon_ftp;
    }

    elsif ( $current_ftpserver eq &#039;disabled&#039;
        and $self-&gt;{selected_ftpserver} ne &#039;disabled&#039;
        and not -e $no_anon_ftp ) {

        # Default Anonymous FTP off if moving from disabled.
        say &#039;Turning Anonymous FTP off&#039;;
        open my $fh, &#039;&gt;&#039;, $no_anon_ftp
          or die &quot;Couldn&#039;t create $no_anon_ftp touch file: $!&quot;;
        print {$fh} &#039;&#039;;
        close $fh;
    }

    {
        my $cpconf_guard = Cpanel::Config::CpConfGuard-&gt;new();
        $self-&gt;{cpconf}{ftpserver} = $cpconf_guard-&gt;{data}{ftpserver} = $self-&gt;{selected_ftpserver};
        $cpconf_guard-&gt;save();
    }

    $self-&gt;{init} = Cpanel::Init-&gt;new();

    #branch to uninstall/install functions
    $self-&gt;disable_chksrvd_monitoring();

    if ( grep { $self-&gt;{selected_ftpserver} eq $_ } @FTP_SERVERS ) {
        $self-&gt;enable_ftpserver(
            $self-&gt;{selected_ftpserver},
            $current_ftpserver,
        );
        $self-&gt;enable_chksrvd_monitoring();
    }
    else {
        $self-&gt;disable_ftpserver($current_ftpserver);
        $self-&gt;install_cpanel_rpms();
    }

    $pid_obj-&gt;remove_pid_file();

    if ( $self-&gt;{&#039;enable-anonymous&#039;} ) {
        say &#039;Updated FTP Server&#039;;
        Cpanel::SafeRun::Simple::saferun(&#039;/usr/local/cpanel/scripts/ftpupdate&#039;);
    }

    say &quot;\nFTP server conversion complete&quot;;
    return 0;
}

sub disable_ftpserver {
    my ( $self, $running_ftpserver ) = @_;

    $self-&gt;_touch_disable_file();
    $self-&gt;_halt_and_disable_ftp_in_init($running_ftpserver);

    require Cpanel::UIUtils::Update;
    Cpanel::UIUtils::Update::trigger_ui_updates();

    return;
}

sub _touch_disable_file {
    my ($self) = @_;
    system &#039;touch&#039;, &#039;/etc/ftpddisable&#039;;
    return;
}

sub _halt_and_disable_ftp_in_init {

    my ( $self, $running_ftpserver ) = @_;

    say &quot;\nHalting $running_ftpserver&quot;;
    my $output = $self-&gt;{init}-&gt;run_command( $running_ftpserver, &#039;stop&#039; );
    say &quot;\nDisabling $running_ftpserver in init system&quot;;
    $output = $self-&gt;{init}-&gt;run_command_for_one(
        &#039;disable&#039;,
        $running_ftpserver,
    );

    return;
}

sub _unlink_disable_files {

    my ($self) = @_;

    foreach my $disable_file ( qw(ftpd ftpserver), @FTP_SERVERS ) {
        unlink &quot;/etc/${disable_file}disable&quot;
          if -e &quot;/etc/${disable_file}disable&quot;;
    }

    return;
}

sub _unlink_auth_check_disabled {

    my ($self) = @_;

    # This will be recreated if appropriate when configuration is done
    unlink &#039;/var/cpanel/ftpd_service_auth_check_disabled&#039;
      if -e &#039;/var/cpanel/ftpd_service_auth_check_disabled&#039;;

    return;
}

sub _build_ftp_conf {
    my ($self) = @_;
    my @build_ftp_conf = $self-&gt;{html} ? (&#039;--html&#039;) : ();
    system &#039;/usr/local/cpanel/bin/build_ftp_conf&#039;, @build_ftp_conf;
    return;
}

sub _enable_ftp_server_in_init {
    my ( $self, $new_ftpserver ) = @_;

    say &quot;\nEnabling $new_ftpserver in init system&quot;;
    my $output = $self-&gt;{init}-&gt;run_command_for_one(
        &#039;enable&#039;,
        $new_ftpserver,
    );

    return;
}

sub _restart_ftpd {

    my ($self) = @_;

    my @restart_args = $self-&gt;{html} ? ( 1, 0, \&amp;Cpanel::Encoder::Tiny::safe_html_encode_str ) : ();
    print join &quot;\n&quot;, Cpanel::Services::Restart::restartservice(
        &#039;ftpd&#039;,
        @restart_args,
    );

    return;
}

sub enable_ftpserver {
    my ( $self, $new_ftpserver, $current_ftpserver ) = @_;

    $self-&gt;_unlink_disable_files();

    if ( $current_ftpserver ne &#039;disabled&#039; ) {
        $self-&gt;_halt_and_disable_ftp_in_init($current_ftpserver);
    }

    $self-&gt;_unlink_auth_check_disabled();

    say &quot;\nSwitching FTP server to $new_ftpserver&quot;;
    $self-&gt;install_cpanel_rpms();

    $self-&gt;_build_ftp_conf();

    $self-&gt;_enable_ftp_server_in_init($new_ftpserver);

    $self-&gt;_restart_ftpd();

    require Cpanel::UIUtils::Update;
    Cpanel::UIUtils::Update::trigger_ui_updates();

    return;
}

sub install_cpanel_rpms {
    my $self = shift;

    say &quot;\nUpdating FTP related packages&quot;;
    system qw(/usr/local/cpanel/scripts/check_cpanel_pkgs --fix --long-list),
      ( $ENV{&#039;CPANEL_BASE_INSTALL&#039;} ? &#039;--no-broken&#039; : () ),
      &#039;--targets&#039; =&gt; join &#039;,&#039;, @FTP_SERVERS;

    return;
}

sub disable_chksrvd_monitoring {
    my $self = shift;

    my %monitored_services = Cpanel::Chkservd::Manage::getmonitored();
    if ( not $monitored_services{&#039;ftpd&#039;} ) {
        say &quot;\nChksrvd monitoring is disabled&quot;;
        return;
    }

    say &quot;\nDisabling Chksrvd monitoring&quot;;
    Cpanel::Chkservd::Manage::disable(&#039;ftpd&#039;);
    my @args = $self-&gt;{html} ? (&#039;--html&#039;) : ();
    system &#039;/usr/local/cpanel/scripts/restartsrv_chkservd&#039;, @args;

    return;
}

sub enable_chksrvd_monitoring {
    my $self = shift;

    my %monitored_services = Cpanel::Chkservd::Manage::getmonitored();
    if ( $monitored_services{&#039;ftpd&#039;} ) {
        say &quot;\nChksrvd monitoring is enabled&quot;;
        return;
    }

    say &quot;\nEnabling chksrvd monitoring&quot;;
    Cpanel::Chkservd::Manage::enable(&#039;ftpd&#039;);
    my @args = $self-&gt;{html} ? (&#039;--html&#039;) : ();
    system &#039;/usr/local/cpanel/scripts/restartsrv_chkservd&#039;, @args;

    return;
}

# We don&#039;t use pod2usage because it insists upon downcasing &quot;FTP&quot;.
sub usage {
    my ($retval) = @_;
    my $fh = $retval ? \*STDERR : \*STDOUT;

    $fh-&gt;print(&lt;&lt;EOM);
Usage: setupftpserver [options] &lt;ftpserver&gt;

Options:
  --force                    Run setup despite warnings that this may fail.
  --current                  Display the currently configured FTP server
  --enable-anonymous         Anonymous now defaults to off when moving from
                             disabled. This option forces it on

FTP Servers:
  pure-ftpd  Recommended FTP server on cPanel systems
  proftpd    Alternate FTP server
  disabled   Disable local FTP functionality

EOM
    exit $retval;
}

1;

__END__

=head1 NAME

setupftpserver - Set up an FTP server for use with cPanel

=head1 SYNOPSIS

  setupftpserver [options] &lt;ftpserver&gt;

=head2 FTP Servers:

=over

=item I&lt;pure-ftpd&gt;

Recommended FTP server on cPanel systems

=item I&lt;proftpd&gt;

Alternate FTP server

=item I&lt;disabled&gt;

Disable local FTP functionality

=back

=head1 OPTIONS

Some options below may be preceded with I&lt;no-&gt; in order to negate them.

=over

=item B&lt;--help&gt;

Print a brief help message and exits.

=item B&lt;--[no-]force&gt;

Run setup despite warnings that this may fail.

=item B&lt;--current&gt;

Display the currently configured FTP server.

=item B&lt;--[no-]enable-anonymous&gt;

Anonymous now defaults to off when moving from disabled.
This option forces it on.

=item B&lt;--[no-]html&gt;

Output HTML when reconfiguring and restarting FTP services.

=back

=cut
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