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#!/usr/local/cpanel/3rdparty/bin/perl
# cpanel - scripts/enable_spf_dkim_globally 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::enable_spf_dkim_globally;
use strict;
use warnings;
use Cpanel::SPF ();
use Cpanel::DKIM::Transaction ();
use Cpanel::Logger ();
use Cpanel::Config::Users ();
use Cpanel::Config::CpUserGuard ();
use Cpanel::Config::LoadCpUserFile ();
use Cpanel::DnsUtils::AskDnsAdmin ();
use Cpanel::DnsUtils::Fetch ();
use Cpanel::PwCache::Build ();
use Cpanel::ZoneFile ();
use Cpanel::Config::LoadUserDomains ();
use Cpanel::ServerTasks ();
use Getopt::Long ();
my $DOMAINS_TO_RELOAD_EACH_CALL = 2048;
my $DKIM_RECORD_NAME_PREFIX = 'default._domainkey.';
my $DKIM_RECORD_NAME_PREFIX_LENGTH = length $DKIM_RECORD_NAME_PREFIX;
our $logger;
our @USERS = ();
sub new {
my $pkg = shift;
return bless {
domains_by_user => scalar Cpanel::Config::LoadUserDomains::loaduserdomains( undef, 0, 1 ),
reload_zones => [],
}, $pkg;
}
sub as_script {
my $self = shift;
$logger //= Cpanel::Logger->new();
my $execute;
Getopt::Long::GetOptions(
"user=s" => \@USERS,
"x" => \$execute,
);
if ( not $execute ) {
my $msg = qq{To execute, use the -x flag.};
$logger->die($msg);
}
$self->run();
return 1;
}
sub run {
my $self = shift;
my $options_href = shift; # { users => [qw/user1 user2/] }
$logger //= Cpanel::Logger->new();
my @users =
( exists $options_href->{user} and @{ $options_href->{user} } ) ? #
@{ $options_href->{user} }
: #
scalar @USERS ? #
@USERS
: #
Cpanel::Config::Users::getcpusers(); #
Cpanel::PwCache::Build::init_passwdless_pwcache() if scalar @users > 5;
my $domains_by_user = $self->{domains_by_user};
USERS:
foreach my $user (@users) {
unless ( exists $domains_by_user->{$user} ) {
$logger->warn(qq{Invalid user "$user", skipping.});
next USERS;
}
my $users_domains_ref = $domains_by_user->{$user};
$self->_enable_spf_dkim_cpusers_file($user);
my $zone_ref = Cpanel::DnsUtils::Fetch::fetch_zones( 'zones' => $users_domains_ref );
$self->_setup_spf_for_all_users_domains( $user, $zone_ref );
$zone_ref = Cpanel::DnsUtils::Fetch::fetch_zones( 'zones' => $users_domains_ref ); # Need to fetch again in case setup_spf has modified them
$self->_setup_dkim_for_users_domains_without_it( $user, $zone_ref );
push @{ $self->{'reload_zones'} }, grep { exists $zone_ref->{$_} } @$users_domains_ref;
}
$self->_reload_zones();
Cpanel::ServerTasks::queue_task( ['DKIMTasks'], 'refresh_entire_dkim_validity_cache' );
return 1;
}
sub _setup_spf_for_all_users_domains {
my ( $self, $user, $zone_ref ) = @_;
my $users_domains_ref = $self->{domains_by_user}->{$user};
# set up SPF on all domains owned by $users
my ( $status, $msg ) = Cpanel::SPF::setup_spf(
'user' => $user,
'preserve' => 1,
'skipreload' => 1,
'zone_ref' => $zone_ref
);
$logger->warn(qq{Failed to set up SPF for $user: $msg}) unless $status;
return $status;
}
sub _setup_dkim_for_users_domains_without_it {
my ( $self, $user, $zone_ref ) = @_;
my $users_domains_ref = $self->{domains_by_user}->{$user};
my $seen_dkim_for_domain_hr = _find_domains_that_have_dkim_installed($zone_ref);
foreach my $domain (@$users_domains_ref) {
if ( $seen_dkim_for_domain_hr->{$domain} ) {
$logger->info(qq{"default._domainkey" DKIM TXT record detected for $domain, skipping.});
}
}
my @domains_to_setup_dkim_on = grep { !$seen_dkim_for_domain_hr->{$_} } @$users_domains_ref;
if (@domains_to_setup_dkim_on) {
my $dkim = Cpanel::DKIM::Transaction->new();
my @w;
my $result = do {
local $SIG{'__WARN__'} = sub { push @w, @_ };
$dkim->set_up_user_domains(
$user,
\@domains_to_setup_dkim_on,
$zone_ref,
);
};
$dkim->commit();
if ( !$result || !$result->was_any_success() ) {
$logger->warn(qq{Failed to set up DKIM for $user: @w});
}
return $result->was_any_success();
}
return;
}
sub _enable_spf_dkim_cpusers_file {
my ( $self, $user ) = @_;
my $cpuser_data = Cpanel::Config::LoadCpUserFile::loadcpuserfile($user);
if ( !$cpuser_data->{'HASSPF'} || !$cpuser_data->{'HASDKIM'} ) {
# check each domain to make sure that we don't overwrite SPF
my $lock = Cpanel::Config::CpUserGuard->new($user);
$lock->{data}{HASSPF} = 1;
$lock->{data}{HASDKIM} = 1;
$lock->save;
}
return 1;
}
sub _reload_zones {
my ($self) = @_;
while ( @{ $self->{'reload_zones'} } ) {
Cpanel::DnsUtils::AskDnsAdmin::askdnsadmin( 'RELOADZONES', 0, join( ',', splice( @{ $self->{'reload_zones'} }, 0, $DOMAINS_TO_RELOAD_EACH_CALL ) ) );
}
return 1;
}
sub _find_domains_that_have_dkim_installed {
my ($zone_ref) = @_;
my %seen_dkim_for_domain;
foreach my $zone ( keys %$zone_ref ) {
my $dkim_records_ar = _get_dkim_records_from_zone_ref( $zone, $zone_ref->{$zone} );
foreach my $record (@$dkim_records_ar) {
my $record_name_without_prefix = substr( $record->{'name'}, $DKIM_RECORD_NAME_PREFIX_LENGTH );
my $domain = _convert_zone_name_to_domain( $record_name_without_prefix, $zone );
$seen_dkim_for_domain{$domain} = 1;
}
}
return \%seen_dkim_for_domain;
}
sub _get_dkim_records_from_zone_ref {
my ( $zone, $zone_contents_ar ) = @_;
my $zone_obj = Cpanel::ZoneFile->new( 'domain' => $zone, 'text' => $zone_contents_ar );
return [ grep { index( $_->{'name'}, $DKIM_RECORD_NAME_PREFIX ) == 0 } $zone_obj->find_records( { 'type' => 'TXT' } ) ];
}
sub _convert_zone_name_to_domain {
my ( $zone_name_record, $zone ) = @_;
# If the name does not end with a . we must append .$zone
if ( substr( $zone_name_record, -1 ) eq '.' ) {
return substr( $zone_name_record, 0, -1 ); # strip tailing .
}
return $zone_name_record . '.' . $zone;
}
if ( not caller() ) {
my $enable = scripts::enable_spf_dkim_globally->new();
$enable->as_script;
exit 0;
}
1;
__END__
=head1 NAME
/scripts/enable_spf_dkim_globally
=head1 USAGE AS A SCRIPT
/scripts/enable_spf_dkim_globally -x [--user=<user1>] [--user=<user2>] ... [--user=<userN>]
=head2 AS A LIBRARY
This script is internally written as a modulino, which means it can be C<require>'d:
use strict;
require q{/scripts/enable_spf_dkim_globally};
my $enable = scripts::enable_spf_dkim_globally->new();
$enable->run(); # globally enable, iterate over domains from all users
$enable->run( { user => [qw/username1 username2/] }); # globally enable, iterate over domains from list of specified users
=head1 DESCRIPTION
This script enables C<SPF> and C<DKIM> system-wide, and it adds respective C<DNS> entries for all domains
if none exist. If a C<DKIM DNS> record is detected for a domain, it remains untouched. If a C<SPF>
record exists, it is updated.
The scope of the domains that are affected with new C<DKIM>/C<SPF> or updated C<SPF> records may be limited
by using the C<--user> flag to specify one or more users from whom the list of domains to affect is generated.
=head1 REQUIRED COMMAND LINE ARGUMENTS
=over 4
=item -x
Use this option to actually run the script, otherwise it will warn and return
without doing anything.
=back
=head1 COMMAND LINE OPTIONS
=over 4
=item --user C<username>
Specify a user or list of users for whom all domains are enabled rather than all user
accounts on the system. Specify more than one user by using one C<--user> per username.
For example,
/scripts/enable_spf_dkim_globally -x --user="username1" --user="username2"
If no users are specified, all domains for all user accounts on the system are enabled.
=back
=head1 DIAGNOSTICS
None
=head1 EXIT STATUS
Exit status is 0 (success) unless an unexpected error occurs.
=head1 DEPENDENCIES
None
=head1 INCOMPATIBILITIES
None
=head1 BUGS AND LIMITATIONS
None
=head1 LICENSE AND COPYRIGHT
Copyright 2022 cPanel, L.L.C.