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#!/usr/local/cpanel/3rdparty/bin/perl
# cpanel - scripts/builddovecotconf 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::builddovecotconf;
use strict;
use Cpanel::Config::LoadCpConf ();
use Cpanel::AdvConfig ();
use Cpanel::AdvConfig::dovecot ();
use Cpanel::AdvConfig::dovecot::utils ();
use Cpanel::Usage ();
use Cpanel::FileUtils::TouchFile ();
use Cpanel::Autodie ();
use Cpanel::FileUtils::Access ();
use Cpanel::Mkdir ();
use Cpanel::Rand ();
use Cpanel::Rand::Get ();
use Cpanel::Dovecot ();
use DBI ();
use DBD::SQLite ();
use Cpanel::DBI::SQLite ();
use Cpanel::LoadModule ();
use Try::Tiny;
our $CONF_PERMS = 0644;
__PACKAGE__->script(@ARGV) unless caller();
sub script {
my ( $class, @args ) = @_;
my $force = 0;
my $leave_broken = 0;
my $now = time();
Cpanel::Usage::wrap_options( \@args, \&usage, { 'force' => \$force, 'leave-broken' => \$leave_broken } );
my $cpconf_ref = Cpanel::Config::LoadCpConf::loadcpconf();
if ( $> != 0 ) {
die "Insufficient permissions to rebuild dovecot.conf";
}
my $dovecot_conf = Cpanel::AdvConfig::dovecot::utils::find_dovecot_conf();
my $test_dovecot_conf = Cpanel::Rand::get_tmp_file_by_name($dovecot_conf);
die 'Failed to get a temporary working file!' if ( $test_dovecot_conf eq '/dev/null' );
chmod( $CONF_PERMS, $test_dovecot_conf ) or die "Could not set permissions on $test_dovecot_conf: $!";
# make sure the local template is valid
_check_local_template() if !$leave_broken;
my $values_to_change = _generate_config_and_check_syntax( $force, $test_dovecot_conf, $dovecot_conf, $leave_broken );
# If dovecot complained certain values are too low, we need to adjust them
if ( scalar keys %$values_to_change ) {
_generate_config_and_check_syntax( $force, $test_dovecot_conf, $dovecot_conf, $leave_broken, $values_to_change );
}
# This will be cached, so there's no big hit
my $conf_hr = Cpanel::AdvConfig::dovecot::get_config();
if ( $conf_hr->{'protocols'} =~ /imap(\s|$)/ ) {
unlink '/var/cpanel/imap_tcp_check_disabled' if ( -e '/var/cpanel/imap_tcp_check_disabled' );
}
else {
Cpanel::FileUtils::TouchFile::touchfile('/var/cpanel/imap_tcp_check_disabled') unless ( -e '/var/cpanel/imap_tcp_check_disabled' );
}
_setup_dovecot_dirs();
_setup_sqlite_dbs();
Cpanel::AdvConfig::dovecot::process_config_changes($conf_hr);
rename $test_dovecot_conf, $dovecot_conf or do {
warn "Failed to install $dovecot_conf: $!";
};
unlink $dovecot_conf . '.datastore'; # Just in case
_build_includes();
return 1;
}
sub _build_includes {
for my $include ( 'dovecotSSL', 'dovecotSNI' ) {
try {
my $module = "Cpanel::AdvConfig::$include";
Cpanel::LoadModule::load_perl_module($module);
$module->new()->rebuild_conf();
}
catch {
warn "The system failed to rebuild Dovecot’s $include configuration file:\n$_";
};
}
return 1;
}
sub _generate_config_and_check_syntax {
my ( $force, $test_dovecot_conf, $dovecot_conf, $leave_broken, $values_to_change ) = @_;
my $config_opts_hr = { 'service' => 'dovecot', 'force' => $force, '_target_conf_file' => $test_dovecot_conf };
if ( $values_to_change and ref $values_to_change eq 'HASH' ) {
$config_opts_hr->{'values_to_change'} = $values_to_change;
}
my ( $returnval, $message ) = Cpanel::AdvConfig::generate_config_file($config_opts_hr);
if ( !$returnval ) {
print "Failed to build $dovecot_conf\n$message\n";
unlink $test_dovecot_conf;
exit 1;
}
( $returnval, $message, my $new_values_to_change ) = Cpanel::AdvConfig::dovecot::check_syntax($test_dovecot_conf);
if ( !$returnval ) {
print <<"EOM";
Configuration generation failed with the following message:
$message
EOM
unless ($force) {
unlink $test_dovecot_conf unless ($leave_broken);
exit 1;
}
}
return $new_values_to_change;
}
sub usage {
print <<EO_USAGE;
Usage: builddovecotconf [options]
Options:
--help Brief help message
--force Force installation of new conf file even if syntax check fails
--leave-broken Leave broken dovecot.conf on the disk so that it can be manually examined
EO_USAGE
exit 0;
}
# Check the local template to make sure it is valid
sub _check_local_template {
my ( $valid_or_not_found, @errs ) = Cpanel::AdvConfig::dovecot::check_if_local_template_is_valid();
return 1 if $valid_or_not_found;
my ( $local_template, $error ) = Cpanel::AdvConfig::dovecot::get_template_file();
if ( !$local_template ) {
print $error . "\n";
return;
}
my $attempts = 1;
my $broken_template = _generate_broken_local_template_name($local_template);
while ( -e $broken_template && $attempts < 11 ) {
sleep(1);
$broken_template = _generate_broken_local_template_name($local_template);
}
if ( -e $broken_template ) {
print "The local template file '$local_template' is invalid, but the system was unable to determine an unused filename to rename it to.\n";
return;
}
print "The local template file '$local_template' is invalid. The system will rename it to $broken_template.\n";
# yes, there is a small race condition here, but I'm betting we never hit it unless we start calling this script a lot more
rename $local_template, $broken_template;
Cpanel::AdvConfig::dovecot::send_icontact( $broken_template, @errs );
return;
}
sub _generate_broken_local_template_name {
my ($local_template) = @_;
return $local_template . '.broken.' . time . '.' . Cpanel::Rand::Get::getranddata(16);
}
sub _setup_dovecot_dirs {
Cpanel::Mkdir::ensure_directory_existence_and_mode( $Cpanel::Dovecot::CP_DOVECOT_STORAGE, 0770 );
Cpanel::FileUtils::Access::ensure_mode_and_owner( $Cpanel::Dovecot::CP_DOVECOT_STORAGE, 0770, 'dovecot' );
Cpanel::Mkdir::ensure_directory_existence_and_mode( $Cpanel::Dovecot::LASTLOGIN_DIR, 0700 );
Cpanel::FileUtils::Access::ensure_mode_and_owner( $Cpanel::Dovecot::LASTLOGIN_DIR, 0700, 'dovecot' );
return 1;
}
sub _setup_sqlite_dbs {
Cpanel::Autodie::unlink_if_exists($Cpanel::Dovecot::SQLITE_LASTLOGIN_DB_FILE);
return 1;
}
1;