Current File : //www/varak.net/dmarc.varak.net/classes/Hosts/Host.php
<?php
/**
* dmarc-srg - A php parser, viewer and summary report generator for incoming DMARC reports.
* Copyright (C) 2025 Aleksey Andreev (liuch)
*
* Available at:
* https://github.com/liuch/dmarc-srg
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation, either version 3 of the License.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*
* =========================
*
* This file contains the class Host
*
* @category API
* @package DmarcSrg
* @author Aleksey Andreev (liuch)
* @license https://www.gnu.org/licenses/gpl-3.0.html GNU/GPLv3
*/
namespace Liuch\DmarcSrg\Hosts;
use Liuch\DmarcSrg\Core;
use Liuch\DmarcSrg\Exception\SoftException;
use Liuch\DmarcSrg\Exception\LogicException;
use Liuch\DmarcSrg\Exception\RuntimeException;
/**
* This class is designed for storing and manipulating hosts data and utilites.
*/
class Host
{
private $db = null;
private $rip = null;
private $rdns = null;
private $data = [
'ip' => null
];
/**
* The constructor
*
* @param string $ip IP address
* @param \Liuch\DmarcSrg\Database\DatabaseController $db The database controller
*
* @return void
*/
public function __construct(string $ip, $db = null)
{
$this->db = $db ?? Core::instance()->database();
if (empty($ip)) {
throw new LogicException('Incorrect host data');
}
if (!filter_var(
$ip,
FILTER_VALIDATE_IP,
FILTER_FLAG_IPV4 | FILTER_FLAG_IPV6 | FILTER_FLAG_NO_RES_RANGE | FILTER_FLAG_NO_PRIV_RANGE
)) {
throw new SoftException('Incorrect IP address');
}
$this->data['ip'] = $ip;
}
/**
* Returns brief information
*
* @param array &$fields List of fields
*
* @return array
*/
public function information(array &$fields): array
{
$res = [];
$sts = null;
$usr = Core::instance()->getCurrentUser();
foreach ($fields as $fld) {
switch ($fld) {
case 'main.rdns':
$res[] = [ $fld, $this->rdnsName() ];
break;
case 'main.rip':
$res[] = [ $fld, $this->checkReverseIp() ];
break;
default:
if (!$sts && substr($fld, 0, 6) === 'stats.') {
$sts = $this->statistics($usr);
}
break;
}
}
if ($sts) {
foreach ([ 'reports', 'messages', 'last_report' ] as $fld) {
$lfld = 'stats.' . $fld;
if (in_array($lfld, $fields)) {
$res[] = [ $lfld, $sts[$fld] ];
}
}
}
return $res;
}
/**
* Returns the reverse DNS hostname or an empty string if lookup fails
*
* @return string
*/
private function rdnsName(): string
{
if (is_null($this->rdns)) {
$rdns = gethostbyaddr($this->data['ip']);
if ($rdns === false) {
throw new RuntimeException('Failed to get the reverse DNS hostname');
}
if ($rdns === $this->data['ip']) {
$rdns = '';
}
$this->rdns = $rdns;
}
return $this->rdns;
}
/**
* Checks if the IP address resolved from the reverse DNS hostname matches the source IP address
*
* @return bool
*/
private function checkReverseIP(): bool
{
if (!is_null($this->rip)) {
return $this->rip;
}
$rname = $this->rdnsName();
if (empty($rname)) {
return false;
}
if (filter_var($this->data['ip'], FILTER_VALIDATE_IP, FILTER_FLAG_IPV4)) {
$type = DNS_A;
} else {
$type = DNS_AAAA;
}
$ip = inet_ntop(inet_pton($this->data['ip']));
$ip_res = dns_get_record($rname, $type);
if ($ip_res === false) {
throw new RuntimeException('Failed to resolve IP address');
}
$this->rip = false;
foreach ($ip_res as &$rec) {
$r = ($type === DNS_A) ? $rec['ip'] : $rec['ipv6'];
if ($ip === $r) {
$this->rip = true;
break;
}
}
unset($rec);
return $this->rip;
}
/*
* Returns an array with statistics of the host
*
* @param \Liuch\DmarcSrg\Users\User $user User for whom to get statistic
*
* @return array
*/
private function statistics($user): array
{
return $this->db->getMapper('host')->statistics($this->data, $user->id());
}
}
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