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#!/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 => qw(pure-ftpd proftpd);
delete @ENV{qw(cp_security_token HTTP_REFERER)};
if ( not caller ) {
local $| = 1;
my $script = __PACKAGE__->new(@ARGV);
exit $script->run();
}
sub new {
my ( $class, @args ) = @_;
my %attribute;
$attribute{'<>'} = sub { $attribute{selected_ftpserver} = shift };
local @ARGV = @args;
GetOptions(
\%attribute,
qw(current force! html! enable-anonymous! <> 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->{cpconf}{ftpserver} }
sub run {
my $self = shift;
my $current_ftpserver =
Cpanel::Services::Enabled::is_enabled('ftpd')
? $self->get_current
: 'disabled';
if ( $self->{current} ) {
say "Current FTP server type: $current_ftpserver";
return 0;
}
if ( !grep { $self->{selected_ftpserver} eq $_ } ( @FTP_SERVERS, 'disabled' ) ) {
say "Unknown FTP server specified.\nTry $0 --help";
return 1;
}
if ( !$self->{force} && grep { $self->{selected_ftpserver} eq $_ } @FTP_SERVERS ) {
my $dir = Cpanel::RPM::Versions::Directory->new(
{ dont_set_legacy => 1 },
);
my $target_state = $dir->fetch(
{
section => 'target_settings',
key => $self->{selected_ftpserver},
},
);
if ( $target_state && grep { $target_state eq $_ } qw(unmanaged uninstalled) ) {
my %target_state_msg = (
unmanaged => 'flagged to be left alone by cPanel',
uninstalled => 'explicitly blocked from installation',
);
print <<"END_TARGET_STATE_MESSAGE";
WARNING: You are attempting to switch to $self->{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->{selected_ftpserver}
If you meant to do this, please re-run $0 with --force
END_TARGET_STATE_MESSAGE
return 2;
}
}
die "Conversion process must be performed as root" if $> != 0;
my $pid_obj = Cpanel::PID->new(
{ pid_file => '/var/run/setupftpserver.pid' },
);
if ( $pid_obj->create_pid_file() <= 0 ) {
print <<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 = '/var/cpanel/noanonftp';
if ( $self->{'enable-anonymous'} and -e $no_anon_ftp ) {
say 'Enabling Anonymous FTP';
unlink $no_anon_ftp;
}
elsif ( $current_ftpserver eq 'disabled'
and $self->{selected_ftpserver} ne 'disabled'
and not -e $no_anon_ftp ) {
# Default Anonymous FTP off if moving from disabled.
say 'Turning Anonymous FTP off';
open my $fh, '>', $no_anon_ftp
or die "Couldn't create $no_anon_ftp touch file: $!";
print {$fh} '';
close $fh;
}
{
my $cpconf_guard = Cpanel::Config::CpConfGuard->new();
$self->{cpconf}{ftpserver} = $cpconf_guard->{data}{ftpserver} = $self->{selected_ftpserver};
$cpconf_guard->save();
}
$self->{init} = Cpanel::Init->new();
#branch to uninstall/install functions
$self->disable_chksrvd_monitoring();
if ( grep { $self->{selected_ftpserver} eq $_ } @FTP_SERVERS ) {
$self->enable_ftpserver(
$self->{selected_ftpserver},
$current_ftpserver,
);
$self->enable_chksrvd_monitoring();
}
else {
$self->disable_ftpserver($current_ftpserver);
$self->install_cpanel_rpms();
}
$pid_obj->remove_pid_file();
if ( $self->{'enable-anonymous'} ) {
say 'Updated FTP Server';
Cpanel::SafeRun::Simple::saferun('/usr/local/cpanel/scripts/ftpupdate');
}
say "\nFTP server conversion complete";
return 0;
}
sub disable_ftpserver {
my ( $self, $running_ftpserver ) = @_;
$self->_touch_disable_file();
$self->_halt_and_disable_ftp_in_init($running_ftpserver);
require Cpanel::UIUtils::Update;
Cpanel::UIUtils::Update::trigger_ui_updates();
return;
}
sub _touch_disable_file {
my ($self) = @_;
system 'touch', '/etc/ftpddisable';
return;
}
sub _halt_and_disable_ftp_in_init {
my ( $self, $running_ftpserver ) = @_;
say "\nHalting $running_ftpserver";
my $output = $self->{init}->run_command( $running_ftpserver, 'stop' );
say "\nDisabling $running_ftpserver in init system";
$output = $self->{init}->run_command_for_one(
'disable',
$running_ftpserver,
);
return;
}
sub _unlink_disable_files {
my ($self) = @_;
foreach my $disable_file ( qw(ftpd ftpserver), @FTP_SERVERS ) {
unlink "/etc/${disable_file}disable"
if -e "/etc/${disable_file}disable";
}
return;
}
sub _unlink_auth_check_disabled {
my ($self) = @_;
# This will be recreated if appropriate when configuration is done
unlink '/var/cpanel/ftpd_service_auth_check_disabled'
if -e '/var/cpanel/ftpd_service_auth_check_disabled';
return;
}
sub _build_ftp_conf {
my ($self) = @_;
my @build_ftp_conf = $self->{html} ? ('--html') : ();
system '/usr/local/cpanel/bin/build_ftp_conf', @build_ftp_conf;
return;
}
sub _enable_ftp_server_in_init {
my ( $self, $new_ftpserver ) = @_;
say "\nEnabling $new_ftpserver in init system";
my $output = $self->{init}->run_command_for_one(
'enable',
$new_ftpserver,
);
return;
}
sub _restart_ftpd {
my ($self) = @_;
my @restart_args = $self->{html} ? ( 1, 0, \&Cpanel::Encoder::Tiny::safe_html_encode_str ) : ();
print join "\n", Cpanel::Services::Restart::restartservice(
'ftpd',
@restart_args,
);
return;
}
sub enable_ftpserver {
my ( $self, $new_ftpserver, $current_ftpserver ) = @_;
$self->_unlink_disable_files();
if ( $current_ftpserver ne 'disabled' ) {
$self->_halt_and_disable_ftp_in_init($current_ftpserver);
}
$self->_unlink_auth_check_disabled();
say "\nSwitching FTP server to $new_ftpserver";
$self->install_cpanel_rpms();
$self->_build_ftp_conf();
$self->_enable_ftp_server_in_init($new_ftpserver);
$self->_restart_ftpd();
require Cpanel::UIUtils::Update;
Cpanel::UIUtils::Update::trigger_ui_updates();
return;
}
sub install_cpanel_rpms {
my $self = shift;
say "\nUpdating FTP related packages";
system qw(/usr/local/cpanel/scripts/check_cpanel_pkgs --fix --long-list),
( $ENV{'CPANEL_BASE_INSTALL'} ? '--no-broken' : () ),
'--targets' => join ',', @FTP_SERVERS;
return;
}
sub disable_chksrvd_monitoring {
my $self = shift;
my %monitored_services = Cpanel::Chkservd::Manage::getmonitored();
if ( not $monitored_services{'ftpd'} ) {
say "\nChksrvd monitoring is disabled";
return;
}
say "\nDisabling Chksrvd monitoring";
Cpanel::Chkservd::Manage::disable('ftpd');
my @args = $self->{html} ? ('--html') : ();
system '/usr/local/cpanel/scripts/restartsrv_chkservd', @args;
return;
}
sub enable_chksrvd_monitoring {
my $self = shift;
my %monitored_services = Cpanel::Chkservd::Manage::getmonitored();
if ( $monitored_services{'ftpd'} ) {
say "\nChksrvd monitoring is enabled";
return;
}
say "\nEnabling chksrvd monitoring";
Cpanel::Chkservd::Manage::enable('ftpd');
my @args = $self->{html} ? ('--html') : ();
system '/usr/local/cpanel/scripts/restartsrv_chkservd', @args;
return;
}
# We don't use pod2usage because it insists upon downcasing "FTP".
sub usage {
my ($retval) = @_;
my $fh = $retval ? \*STDERR : \*STDOUT;
$fh->print(<<EOM);
Usage: setupftpserver [options] <ftpserver>
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] <ftpserver>
=head2 FTP Servers:
=over
=item I<pure-ftpd>
Recommended FTP server on cPanel systems
=item I<proftpd>
Alternate FTP server
=item I<disabled>
Disable local FTP functionality
=back
=head1 OPTIONS
Some options below may be preceded with I<no-> in order to negate them.
=over
=item B<--help>
Print a brief help message and exits.
=item B<--[no-]force>
Run setup despite warnings that this may fail.
=item B<--current>
Display the currently configured FTP server.
=item B<--[no-]enable-anonymous>
Anonymous now defaults to off when moving from disabled.
This option forces it on.
=item B<--[no-]html>
Output HTML when reconfiguring and restarting FTP services.
=back
=cut