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#!/usr/local/cpanel/3rdparty/bin/perl
# cpanel - scripts/build_cpnat 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::build_cpnat;
use strict;
use warnings;
use Cpanel::Config::SaveWwwAcctConf ();
use Cpanel::Config::LoadWwwAcctConf ();
use Cpanel::NAT ();
use Cpanel::NAT::Discovery ();
use Cpanel::NAT::Build ();
use Cpanel::Usage ();
use Cpanel::Debug ();
exit( run(@ARGV) ) unless caller();
sub run {
my $man_page = 0;
my %opts = (
'man' => \$man_page,
);
Cpanel::Usage::wrap_options( \@ARGV, \&usage, \%opts );
return man() if $man_page;
my $failures;
my $cp_nat = Cpanel::NAT::Discovery->new();
eval {
$failures = $cp_nat->discover();
validate_wwwacct_conf();
};
if ($@) {
die $@;
}
Cpanel::NAT::Build::update();
if ( keys %$failures ) {
return 1;
}
return 0;
}
sub usage {
my $prog = $0;
$prog =~ s{^.+/(.+)$}{$1};
print <{'ADDR'};
return unless $primary_ip;
my $local_ip = Cpanel::NAT::get_local_ip($primary_ip);
return if ( $primary_ip eq $local_ip );
# wwwacct.conf had to be fixed.
Cpanel::Debug::log_info("Updating /etc/wwwacct.conf primary IP (ADDR) from $primary_ip to $local_ip. Local IPs, not public should be stored in most configuration files.");
$wwwacct->{'ADDR'} = $local_ip;
Cpanel::Config::SaveWwwAcctConf::savewwwacctconf($wwwacct);
return;
}
sub man {
{
exec( "perldoc", $0 );
}
exit 0;
}
1;
__END__
=head1 NAME
build_cpnat - enables 1-to-1 NAT in cPanel/WHM.
=head1 SYNOPSIS
build_cpnat [options]
Options:
--help print help message
=head1 DESCRIPTION
1:1 NAT mapping
When /usr/local/cpanel/scripts/build_cpnat is executed, all non-loopback IPs
bound to any network interface on the system will be used to make a connection
to a remote cPanel webserver. The remote cPanel webserver will return one public
IP for each non-loopback IP that is sent. The list of the public IPs that are
associated with the internal IPs will be written to the I
file one mapping per line: local_ip remote_ip
=over
=item * Lines in I with only one IP will be ignored by cPanel/WHM
because they are determined to not be publically accessible.
=item * If multipe internal IPs match the same public IP, the first internal
IP listed in the I file will be used.
=back
By default, this script will use the L URL
to detect the public IP addresses that correspond to your local IP addresses. If
you wish to override this URL, you can add an entry to the I file
corresponding to the 'MYIP' key (example below):
MYIP=http://myip.cpanel.net/v1.0/
NOTE: This URL must return B the IP address of the client connection.
=cut