mailcow/data/web/inc/ajax/dns_diagnostics.php

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<?php
require_once $_SERVER['DOCUMENT_ROOT'] . '/inc/prerequisites.inc.php';
require_once $_SERVER['DOCUMENT_ROOT'] . '/inc/spf.inc.php';
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define('state_good', '<span class="glyphicon glyphicon-ok text-success"></span>');
define('state_missing', '<span class="glyphicon glyphicon-remove text-danger"></span>');
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define('state_nomatch', "?");
define('state_optional', " <sup>2</sup>");
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if (isset($_SESSION['mailcow_cc_role']) && ($_SESSION['mailcow_cc_role'] == "admin"|| $_SESSION['mailcow_cc_role'] == "domainadmin")) {
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$domains = mailbox('get', 'domains');
foreach(mailbox('get', 'domains') as $dn) {
$domains = array_merge($domains, mailbox('get', 'alias_domains', $dn));
}
if (isset($_GET['domain'])) {
if (is_valid_domain_name($_GET['domain'])) {
if (in_array($_GET['domain'], $domains)) {
$domain = $_GET['domain'];
}
else {
echo "No such domain in context";
die();
}
}
else {
echo "Invalid domain name";
die();
}
}
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$ch = curl_init('http://ip4.mailcow.email');
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curl_setopt($ch, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4);
curl_setopt($ch, CURLOPT_VERBOSE, false);
curl_setopt($ch, CURLOPT_HEADER, false);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 3);
$ip = curl_exec($ch);
curl_close($ch);
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$ch = curl_init('http://ip6.mailcow.email');
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curl_setopt($ch, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V6);
curl_setopt($ch, CURLOPT_VERBOSE, false);
curl_setopt($ch, CURLOPT_HEADER, false);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 3);
$ip6 = curl_exec($ch);
curl_close($ch);
$ptr = implode('.', array_reverse(explode('.', $ip))) . '.in-addr.arpa';
if (!empty($ip6)) {
$ip6_full = str_replace('::', str_repeat(':', 9-substr_count($ip6, ':')), $ip6);
$ip6_full = str_replace('::', ':0:', $ip6_full);
$ip6_full = str_replace('::', ':0:', $ip6_full);
$ptr6 = '';
foreach (explode(':', $ip6_full) as $part) {
$ptr6 .= str_pad($part, 4, '0', STR_PAD_LEFT);
}
$ptr6 = implode('.', array_reverse(str_split($ptr6, 1))) . '.ip6.arpa';
}
$https_port = strpos($_SERVER['HTTP_HOST'], ':');
if ($https_port === FALSE) {
$https_port = 443;
}
else {
$https_port = substr($_SERVER['HTTP_HOST'], $https_port+1);
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}
if (!isset($autodiscover_config['sieve'])) {
$autodiscover_config['sieve'] = array('server' => $mailcow_hostname, 'port' => array_pop(explode(':', getenv('SIEVE_PORT'))));
}
// Init records array
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$spf_link = '<a href="http://www.openspf.org/SPF_Record_Syntax" target="_blank">SPF Record Syntax</a><br />;
$dmarc_link = '<a href="http://www.kitterman.com/dmarc/assistant.html" target="_blank">DMARC Assistant</a>';
$records = array();
if ($_SESSION['mailcow_cc_role'] == "admin") {
$records[] = array(
$mailcow_hostname,
'A',
$ip
);
$records[] = array(
$ptr,
'PTR',
$mailcow_hostname
);
if (!empty($ip6)) {
$records[] = array(
$mailcow_hostname,
'AAAA',
$ip6
);
$records[] = array(
$ptr6,
'PTR',
$mailcow_hostname
);
}
$records[] = array(
'_25._tcp.'.$autodiscover_config['smtp']['server'],
'TLSA',
generate_tlsa_digest($autodiscover_config['smtp']['server'], 25, 1)
);
$records[] = array(
'_'.$https_port.
'._tcp.'.$mailcow_hostname,
'TLSA',
generate_tlsa_digest($mailcow_hostname, $https_port)
);
$records[] = array(
'_'.$autodiscover_config['pop3']['tlsport'].
'._tcp.'.$autodiscover_config['pop3']['server'],
'TLSA',
generate_tlsa_digest($autodiscover_config['pop3']['server'], $autodiscover_config['pop3']['tlsport'], 1)
);
$records[] = array(
'_'.$autodiscover_config['imap']['tlsport'].
'._tcp.'.$autodiscover_config['imap']['server'],
'TLSA',
generate_tlsa_digest($autodiscover_config['imap']['server'], $autodiscover_config['imap']['tlsport'], 1)
);
$records[] = array(
'_'.$autodiscover_config['smtp']['port'].
'._tcp.'.$autodiscover_config['smtp']['server'],
'TLSA',
generate_tlsa_digest($autodiscover_config['smtp']['server'], $autodiscover_config['smtp']['port'])
);
$records[] = array(
'_'.$autodiscover_config['smtp']['tlsport'].
'._tcp.'.$autodiscover_config['smtp']['server'],
'TLSA',
generate_tlsa_digest($autodiscover_config['smtp']['server'], $autodiscover_config['smtp']['tlsport'], 1)
);
$records[] = array(
'_'.$autodiscover_config['imap']['port'].
'._tcp.'.$autodiscover_config['imap']['server'],
'TLSA',
generate_tlsa_digest($autodiscover_config['imap']['server'], $autodiscover_config['imap']['port'])
);
$records[] = array(
'_'.$autodiscover_config['pop3']['port'].
'._tcp.'.$autodiscover_config['pop3']['server'],
'TLSA',
generate_tlsa_digest($autodiscover_config['pop3']['server'], $autodiscover_config['pop3']['port'])
);
$records[] = array(
'_'.$autodiscover_config['sieve']['port'].
'._tcp.'.$autodiscover_config['sieve']['server'],
'TLSA',
generate_tlsa_digest($autodiscover_config['sieve']['server'], $autodiscover_config['sieve']['port'], 1)
);
}
$records[] = array(
$domain,
'MX',
$mailcow_hostname
);
$records[] = array(
'autodiscover.'.$domain,
'CNAME',
$mailcow_hostname
);
$records[] = array(
'_autodiscover._tcp.'.$domain,
'SRV',
$mailcow_hostname.
' '.$https_port
);
$records[] = array(
'autoconfig.'.$domain,
'CNAME',
$mailcow_hostname
);
$records[] = array(
$domain,
'TXT',
$spf_link,
state_optional
);
$records[] = array(
'_dmarc.'.$domain,
'TXT',
$dmarc_link,
state_optional
);
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if (!empty($dkim = dkim('details', $domain))) {
$records[] = array(
$dkim['dkim_selector'] . '._domainkey.' . $domain,
'TXT',
$dkim['dkim_txt']
);
}
$current_records = dns_get_record('_pop3._tcp.' . $domain, DNS_SRV);
if (count($current_records) == 0 || $current_records[0]['target'] != '') {
if ($autodiscover_config['pop3']['tlsport'] != '110') {
$records[] = array(
'_pop3._tcp.' . $domain,
'SRV',
$autodiscover_config['pop3']['server'] . ' ' . $autodiscover_config['pop3']['tlsport']
);
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}
}
else {
$records[] = array(
'_pop3._tcp.' . $domain,
'SRV',
'. 0'
);
}
$current_records = dns_get_record('_pop3s._tcp.' . $domain, DNS_SRV);
if (count($current_records) == 0 || $current_records[0]['target'] != '') {
if ($autodiscover_config['pop3']['port'] != '995') {
$records[] = array(
'_pop3s._tcp.' . $domain,
'SRV',
$autodiscover_config['pop3']['server'] . ' ' . $autodiscover_config['pop3']['port']
);
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}
}
else {
$records[] = array(
'_pop3s._tcp.' . $domain,
'SRV',
'. 0'
);
}
if ($autodiscover_config['imap']['tlsport'] != '143') {
$records[] = array(
'_imap._tcp.' . $domain,
'SRV',
$autodiscover_config['imap']['server'] . ' ' . $autodiscover_config['imap']['tlsport']
);
}
if ($autodiscover_config['imap']['port'] != '993') {
$records[] = array(
'_imaps._tcp.' . $domain,
'SRV',
$autodiscover_config['imap']['server'] . ' ' . $autodiscover_config['imap']['port']
);
}
if ($autodiscover_config['smtp']['tlsport'] != '587') {
$records[] = array(
'_submission._tcp.' . $domain,
'SRV',
$autodiscover_config['smtp']['server'] . ' ' . $autodiscover_config['smtp']['tlsport']
);
}
if ($autodiscover_config['smtp']['port'] != '465') {
$records[] = array(
'_smtps._tcp.' . $domain,
'SRV',
$autodiscover_config['smtp']['server'] . ' ' . $autodiscover_config['smtp']['port']
);
}
if ($autodiscover_config['sieve']['port'] != '4190') {
$records[] = array(
'_sieve._tcp.' . $domain,
'SRV',
$autodiscover_config['sieve']['server'] . ' ' . $autodiscover_config['sieve']['port']
);
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}
$record_types = array(
'A' => DNS_A,
'AAAA' => DNS_AAAA,
'CNAME' => DNS_CNAME,
'MX' => DNS_MX,
'PTR' => DNS_PTR,
'SRV' => DNS_SRV,
'TXT' => DNS_TXT,
);
$data_field = array(
'A' => 'ip',
'AAAA' => 'ipv6',
'CNAME' => 'target',
'MX' => 'target',
'PTR' => 'target',
'SRV' => 'data',
'TLSA' => 'data',
'TXT' => 'txt',
);
?>
<div class="table-responsive" id="dnstable">
<table class="table table-striped">
<tr>
<th><?=$lang['diagnostics']['dns_records_name'];?></th>
<th><?=$lang['diagnostics']['dns_records_type'];?></th>
<th><?=$lang['diagnostics']['dns_records_data'];?></th>
<th><?=$lang['diagnostics']['dns_records_status'];?></th>
</tr>
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<?php
foreach ($records as $record) {
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$record[1] = strtoupper($record[1]);
$state = state_missing;
if ($record[1] == 'TLSA') {
$currents = dns_get_record($record[0], 52, $_, $_, TRUE);
foreach ($currents as &$current) {
$current['type'] = 'TLSA';
$current['cert_usage'] = hexdec(bin2hex($current['data']{0}));
$current['selector'] = hexdec(bin2hex($current['data']{1}));
$current['match_type'] = hexdec(bin2hex($current['data']{2}));
$current['cert_data'] = bin2hex(substr($current['data'], 3));
$current['data'] = $current['cert_usage'] . ' ' . $current['selector'] . ' ' . $current['match_type'] . ' ' . $current['cert_data'];
}
unset($current);
}
else {
$currents = dns_get_record($record[0], $record_types[$record[1]]);
if ($record[1] == 'SRV') {
foreach ($currents as &$current) {
if ($current['target'] == '') {
$current['target'] = '.';
$current['port'] = '0';
}
$current['data'] = $current['target'] . ' ' . $current['port'];
}
unset($current);
}
elseif ($record[1] == 'TXT') {
foreach ($currents as &$current) {
unset($current);
}
unset($current);
}
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}
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if ($record[1] == 'CNAME' && count($currents) == 0) {
// A and AAAA are also valid instead of CNAME
$a = dns_get_record($record[0], DNS_A);
$cname = dns_get_record($record[2], DNS_A);
if (count($a) > 0 && count($cname) > 0) {
if ($a[0]['ip'] == $cname[0]['ip']) {
$currents = array(array('host' => $record[0], 'class' => 'IN', 'type' => 'CNAME', 'target' => $record[2]));
$aaaa = dns_get_record($record[0], DNS_AAAA);
$cname = dns_get_record($record[2], DNS_AAAA);
if (count($aaaa) == 0 || count($cname) == 0 || $aaaa[0]['ipv6'] != $cname[0]['ipv6']) {
$currents[0]['target'] = $aaaa[0]['ipv6'] . ' <sup>1</sup>';
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}
}
else {
$currents = array(array('host' => $record[0], 'class' => 'IN', 'type' => 'CNAME', 'target' => $a[0]['ip'] . ' <sup>1</sup>'));
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}
}
}
foreach ($currents as &$current) {
if ($current['type'] == 'TXT' &&
stripos($current['txt'], 'v=dmarc') === 0 &&
$record[2] == $dmarc_link) {
$current['txt'] = str_replace(' ', '', $current['txt']);
$state = $current[$data_field[$current['type']]] . state_optional;
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}
elseif ($current['type'] == 'TXT' &&
stripos($current['txt'], 'v=spf') === 0 &&
$record[2] == $spf_link) {
$state = state_nomatch;
$rslt = get_spf_allowed_hosts($record[0]);
if(in_array($ip, $rslt) && in_array($ip6, $rslt)){
$state = state_good;
}
$state .= '<br />' . $current[$data_field[$current['type']]].state_optional;
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}
elseif ($current['type'] == 'TXT' &&
stripos($current['txt'], 'v=dkim') === 0 &&
stripos($record[2], 'v=dkim') === 0) {
$current['txt'] = str_replace(' ', '', $current['txt']);
if ($current[$data_field[$current['type']]] == $record[2]) {
$state = state_good;
}
}
elseif ($current['type'] != 'TXT' &&
isset($data_field[$current['type']]) && $state != state_good) {
$state = state_nomatch;
if ($current[$data_field[$current['type']]] == $record[2]) {
$state = state_good;
}
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}
}
unset($current);
if (isset($record[3]) &&
$record[3] == state_optional &&
($state == state_missing || $state == state_nomatch)) {
$state = state_optional;
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}
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if ($state == state_nomatch) {
$state = array();
foreach ($currents as $current) {
$state[] = $current[$data_field[$current['type']]];
}
$state = implode('<br />', $state);
}
echo sprintf('<tr>
<td>%s</td>
<td>%s</td>
<td class="dns-found">%s</td>
<td class="dns-recommended">%s</td>
</tr>', $record[0], $record[1], $record[2], $state);
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}
?>
</table>
</div>
<p class="help-block">
<sup>1</sup> <?=$lang['diagnostics']['cname_from_a'];?><br />
<sup>2</sup> <?=$lang['diagnostics']['optional'];?>
</p>
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<?php
} else {
echo "Session invalid";
die();
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}
?>