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functions.inc.php
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<?php
use PHPMailer\PHPMailer\PHPMailer;
use PHPMailer\PHPMailer\SMTP;
use PHPMailer\PHPMailer\Exception;
function is_valid_regex($exp) {
return @preg_match($exp, '') !== false;
}
function isset_has_content($var) {
if (isset($var) && $var != "") {
return true;
}
else {
return false;
}
}
function readable_random_string($length = 8) {
$string = '';
$vowels = array('a', 'e', 'i', 'o', 'u');
$consonants = array('b', 'c', 'd', 'f', 'g', 'h', 'j', 'k', 'l', 'm', 'n', 'p', 'r', 's', 't', 'v', 'w', 'x', 'y', 'z');
$max = $length / 2;
for ($i = 1; $i <= $max; $i++) {
$string .= $consonants[rand(0,19)];
$string .= $vowels[rand(0,4)];
}
return $string;
}
// Validates ips and cidrs
function valid_network($network) {
if (filter_var($network, FILTER_VALIDATE_IP)) {
return true;
}
$parts = explode('/', $network);
if (count($parts) != 2) {
return false;
}
$ip = $parts[0];
$netmask = $parts[1];
if (!preg_match("/^\d+$/", $netmask)){
return false;
}
$netmask = intval($parts[1]);
if ($netmask < 0) {
return false;
}
if (filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4)) {
return $netmask <= 32;
}
if (filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6)) {
return $netmask <= 128;
}
return false;
}
function valid_hostname($hostname) {
return filter_var($hostname, FILTER_VALIDATE_DOMAIN, FILTER_FLAG_HOSTNAME);
}
// Thanks to https://stackoverflow.com/a/49373789
// Validates exact ip matches and ip-in-cidr, ipv4 and ipv6
function ip_acl($ip, $networks) {
foreach($networks as $network) {
if (filter_var($network, FILTER_VALIDATE_IP)) {
if ($ip == $network) {
return true;
}
else {
continue;
}
}
$ipb = inet_pton($ip);
$iplen = strlen($ipb);
if (strlen($ipb) < 4) {
continue;
}
$ar = explode('/', $network);
$ip1 = $ar[0];
$ip1b = inet_pton($ip1);
$ip1len = strlen($ip1b);
if ($ip1len != $iplen) {
continue;
}
if (count($ar)>1) {
$bits=(int)($ar[1]);
}
else {
$bits = $iplen * 8;
}
for ($c=0; $bits>0; $c++) {
$bytemask = ($bits < 8) ? 0xff ^ ((1 << (8-$bits))-1) : 0xff;
if (((ord($ipb[$c]) ^ ord($ip1b[$c])) & $bytemask) != 0) {
continue 2;
}
$bits-=8;
}
return true;
}
return false;
}
function hash_password($password) {
// default_pass_scheme is determined in vars.inc.php (or corresponding local file)
// in case default pass scheme is not defined, falling back to BLF-CRYPT.
global $default_pass_scheme;
$pw_hash = NULL;
// support pre-hashed passwords
if (preg_match('/^{(ARGON2I|ARGON2ID|BLF-CRYPT|CLEAR|CLEARTEXT|CRYPT|DES-CRYPT|LDAP-MD5|MD5|MD5-CRYPT|PBKDF2|PLAIN|PLAIN-MD4|PLAIN-MD5|PLAIN-TRUNC|PLAIN-TRUNC|SHA|SHA1|SHA256|SHA256-CRYPT|SHA512|SHA512-CRYPT|SMD5|SSHA|SSHA256|SSHA512)}/i', $password)) {
$pw_hash = $password;
}
else {
switch (strtoupper($default_pass_scheme)) {
case "SSHA":
$salt_str = bin2hex(openssl_random_pseudo_bytes(8));
$pw_hash = "{SSHA}".base64_encode(hash('sha1', $password . $salt_str, true) . $salt_str);
break;
case "SSHA256":
$salt_str = bin2hex(openssl_random_pseudo_bytes(8));
$pw_hash = "{SSHA256}".base64_encode(hash('sha256', $password . $salt_str, true) . $salt_str);
break;
case "SSHA512":
$salt_str = bin2hex(openssl_random_pseudo_bytes(8));
$pw_hash = "{SSHA512}".base64_encode(hash('sha512', $password . $salt_str, true) . $salt_str);
break;
case "BLF-CRYPT":
default:
$pw_hash = "{BLF-CRYPT}" . password_hash($password, PASSWORD_BCRYPT);
break;
}
}
return $pw_hash;
}
function password_complexity($_action, $_data = null) {
global $redis;
global $lang;
switch ($_action) {
case 'edit':
if ($_SESSION['mailcow_cc_role'] != "admin") {
$_SESSION['return'][] = array(
'type' => 'danger',
'log' => array(__FUNCTION__, $_action, $_data),
'msg' => 'access_denied'
);
return false;
}
$is_now = password_complexity('get');
if (!empty($is_now)) {
$length = (isset($_data['length']) && intval($_data['length']) >= 3) ? intval($_data['length']) : $is_now['length'];
$chars = (isset($_data['chars'])) ? intval($_data['chars']) : $is_now['chars'];
$lowerupper = (isset($_data['lowerupper'])) ? intval($_data['lowerupper']) : $is_now['lowerupper'];
$special_chars = (isset($_data['special_chars'])) ? intval($_data['special_chars']) : $is_now['special_chars'];
$numbers = (isset($_data['numbers'])) ? intval($_data['numbers']) : $is_now['numbers'];
}
try {
$redis->hMSet('PASSWD_POLICY', [
'length' => $length,
'chars' => $chars,
'special_chars' => $special_chars,
'lowerupper' => $lowerupper,
'numbers' => $numbers
]);
}
catch (RedisException $e) {
$_SESSION['return'][] = array(
'type' => 'danger',
'log' => array(__FUNCTION__, $_action, $_data),
'msg' => array('redis_error', $e)
);
return false;
}
$_SESSION['return'][] = array(
'type' => 'success',
'log' => array(__FUNCTION__, $_action, $_data),
'msg' => 'password_policy_saved'
);
break;
case 'get':
try {
$length = $redis->hGet('PASSWD_POLICY', 'length');
$chars = $redis->hGet('PASSWD_POLICY', 'chars');
$special_chars = $redis->hGet('PASSWD_POLICY', 'special_chars');
$lowerupper = $redis->hGet('PASSWD_POLICY', 'lowerupper');
$numbers = $redis->hGet('PASSWD_POLICY', 'numbers');
return array(
'length' => $length,
'chars' => $chars,
'special_chars' => $special_chars,
'lowerupper' => $lowerupper,
'numbers' => $numbers
);
}
catch (RedisException $e) {
$_SESSION['return'][] = array(
'type' => 'danger',
'log' => array(__FUNCTION__, $_action, $_data),
'msg' => array('redis_error', $e)
);
return false;
}
return false;
break;
case 'html':
$policies = password_complexity('get');
foreach ($policies as $name => $value) {
if ($value != 0) {
$policy_text[] = sprintf($lang['admin']["password_policy_$name"], $value);
}
}
return '<p class="help-block small">- ' . implode('<br>- ', (array)$policy_text) . '</p>';
break;
}
}
function password_check($password1, $password2) {
$password_complexity = password_complexity('get');
if (empty($password1) || empty($password2)) {
$_SESSION['return'][] = array(
'type' => 'danger',
'log' => array(__FUNCTION__, $_action, $_type),
'msg' => 'password_complexity'
);
return false;
}
if ($password1 != $password2) {
$_SESSION['return'][] = array(
'type' => 'danger',
'log' => array(__FUNCTION__, $_action, $_type),
'msg' => 'password_mismatch'
);
return false;
}
$given_password['length'] = strlen($password1);
$given_password['special_chars'] = preg_match('/[^a-zA-Z\d]/', $password1);
$given_password['chars'] = preg_match('/[a-zA-Z]/',$password1);
$given_password['numbers'] = preg_match('/\d/', $password1);
$lower = strlen(preg_replace("/[^a-z]/", '', $password1));
$upper = strlen(preg_replace("/[^A-Z]/", '', $password1));
$given_password['lowerupper'] = ($lower > 0 && $upper > 0) ? true : false;
if (
($given_password['length'] < $password_complexity['length']) ||
($password_complexity['special_chars'] == 1 && (intval($given_password['special_chars']) != $password_complexity['special_chars'])) ||
($password_complexity['chars'] == 1 && (intval($given_password['chars']) != $password_complexity['chars'])) ||
($password_complexity['numbers'] == 1 && (intval($given_password['numbers']) != $password_complexity['numbers'])) ||
($password_complexity['lowerupper'] == 1 && (intval($given_password['lowerupper']) != $password_complexity['lowerupper']))
) {
$_SESSION['return'][] = array(
'type' => 'danger',
'log' => array(__FUNCTION__, $_action, $_type),
'msg' => 'password_complexity'
);
return false;
}
return true;
}
function last_login($action, $username, $sasl_limit_days = 7, $ui_offset = 1) {
global $pdo;
global $redis;
$sasl_limit_days = intval($sasl_limit_days);
switch ($action) {
case 'get':
if (filter_var($username, FILTER_VALIDATE_EMAIL) && hasMailboxObjectAccess($_SESSION['mailcow_cc_username'], $_SESSION['mailcow_cc_role'], $username)) {
$stmt = $pdo->prepare('SELECT `real_rip`, MAX(`datetime`) as `datetime`, `service`, `app_password`, MAX(`app_passwd`.`name`) as `app_password_name` FROM `sasl_log`
LEFT OUTER JOIN `app_passwd` on `sasl_log`.`app_password` = `app_passwd`.`id`
WHERE `username` = :username
AND HOUR(TIMEDIFF(NOW(), `datetime`)) < :sasl_limit_days
GROUP BY `real_rip`, `service`, `app_password`
ORDER BY `datetime` DESC;');
$stmt->execute(array(':username' => $username, ':sasl_limit_days' => ($sasl_limit_days * 24)));
$sasl = $stmt->fetchAll(PDO::FETCH_ASSOC);
foreach ($sasl as $k => $v) {
if (!filter_var($sasl[$k]['real_rip'], FILTER_VALIDATE_IP, FILTER_FLAG_NO_PRIV_RANGE | FILTER_FLAG_NO_RES_RANGE)) {
$sasl[$k]['real_rip'] = 'Web/EAS/Internal (' . $sasl[$k]['real_rip'] . ')';
}
elseif (filter_var($sasl[$k]['real_rip'], FILTER_VALIDATE_IP, FILTER_FLAG_NO_PRIV_RANGE | FILTER_FLAG_NO_RES_RANGE)) {
try {
$sasl[$k]['location'] = $redis->hGet('IP_SHORTCOUNTRY', $sasl[$k]['real_rip']);
}
catch (RedisException $e) {
$_SESSION['return'][] = array(
'type' => 'danger',
'log' => array(__FUNCTION__, $_action, $_data_log),
'msg' => array('redis_error', $e)
);
return false;
}
if (!$sasl[$k]['location']) {
$curl = curl_init();
curl_setopt($curl, CURLOPT_URL,"https://dfdata.bella.network/country/" . $sasl[$k]['real_rip']);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl, CURLOPT_USERAGENT, 'Moocow');
curl_setopt($curl, CURLOPT_TIMEOUT, 5);
$ip_data = curl_exec($curl);
if (!curl_errno($curl)) {
$ip_data_array = json_decode($ip_data, true);
if ($ip_data_array !== false and !empty($ip_data_array['shortcountry'])) {
$sasl[$k]['location'] = $ip_data_array['shortcountry'];
try {
$redis->hSet('IP_SHORTCOUNTRY', $sasl[$k]['real_rip'], $ip_data_array['shortcountry']);
}
catch (RedisException $e) {
$_SESSION['return'][] = array(
'type' => 'danger',
'log' => array(__FUNCTION__, $_action, $_data_log),
'msg' => array('redis_error', $e)
);
curl_close($curl);
return false;
}
}
}
curl_close($curl);
}
}
}
}
else {
$sasl = array();
}
if ($_SESSION['mailcow_cc_role'] == "admin" || $username == $_SESSION['mailcow_cc_username']) {
$stmt = $pdo->prepare('SELECT `remote`, `time` FROM `logs`
WHERE JSON_EXTRACT(`call`, "$[0]") = "check_login"
AND JSON_EXTRACT(`call`, "$[1]") = :username
AND `type` = "success" ORDER BY `time` DESC LIMIT 1 OFFSET :offset');
$stmt->execute(array(
':username' => $username,
':offset' => $ui_offset
));
$ui = $stmt->fetch(PDO::FETCH_ASSOC);
}
else {
$ui = array();
}
return array('ui' => $ui, 'sasl' => $sasl);
break;
case 'reset':
if (filter_var($username, FILTER_VALIDATE_EMAIL) && hasMailboxObjectAccess($_SESSION['mailcow_cc_username'], $_SESSION['mailcow_cc_role'], $username)) {
$stmt = $pdo->prepare('DELETE FROM `sasl_log`
WHERE `username` = :username');
$stmt->execute(array(':username' => $username));
}
if ($_SESSION['mailcow_cc_role'] == "admin" || $username == $_SESSION['mailcow_cc_username']) {
$stmt = $pdo->prepare('DELETE FROM `logs`
WHERE JSON_EXTRACT(`call`, "$[0]") = "check_login"
AND JSON_EXTRACT(`call`, "$[1]") = :username
AND `type` = "success"');
$stmt->execute(array(':username' => $username));
}
return true;
break;
}
}
function flush_memcached() {
try {
$m = new Memcached();
$m->addServer('memcached', 11211);
$m->flush();
}
catch ( Exception $e ) {
// Dunno
}
}
function sys_mail($_data) {
if ($_SESSION['mailcow_cc_role'] != "admin") {
$_SESSION['return'][] = array(
'type' => 'danger',
'log' => array(__FUNCTION__),
'msg' => 'access_denied'
);
return false;
}
$excludes = $_data['mass_exclude'];
$includes = $_data['mass_include'];
$mailboxes = array();
$mass_from = $_data['mass_from'];
$mass_text = $_data['mass_text'];
$mass_html = $_data['mass_html'];
$mass_subject = $_data['mass_subject'];
if (!filter_var($mass_from, FILTER_VALIDATE_EMAIL)) {
$_SESSION['return'][] = array(
'type' => 'danger',
'log' => array(__FUNCTION__),
'msg' => 'from_invalid'
);
return false;
}
if (empty($mass_subject)) {
$_SESSION['return'][] = array(
'type' => 'danger',
'log' => array(__FUNCTION__),
'msg' => 'subject_empty'
);
return false;
}
if (empty($mass_text)) {
$_SESSION['return'][] = array(
'type' => 'danger',
'log' => array(__FUNCTION__),
'msg' => 'text_empty'
);
return false;
}
$domains = array_merge(mailbox('get', 'domains'), mailbox('get', 'alias_domains'));
foreach ($domains as $domain) {
foreach (mailbox('get', 'mailboxes', $domain) as $mailbox) {
$mailboxes[] = $mailbox;
}
}
if (!empty($includes)) {
$rcpts = array_intersect($mailboxes, $includes);
}
elseif (!empty($excludes)) {
$rcpts = array_diff($mailboxes, $excludes);
}
else {
$rcpts = $mailboxes;
}
if (!empty($rcpts)) {
ini_set('max_execution_time', 0);
ini_set('max_input_time', 0);
$mail = new PHPMailer;
$mail->Timeout = 10;
$mail->SMTPOptions = array(
'ssl' => array(
'verify_peer' => false,
'verify_peer_name' => false,
'allow_self_signed' => true
)
);
$mail->isSMTP();
$mail->Host = 'dovecot-mailcow';
$mail->SMTPAuth = false;
$mail->Port = 24;
$mail->setFrom($mass_from);
$mail->Subject = $mass_subject;
$mail->CharSet ="UTF-8";
if (!empty($mass_html)) {
$mail->Body = $mass_html;
$mail->AltBody = $mass_text;
}
else {
$mail->Body = $mass_text;
}
$mail->XMailer = 'MooMassMail';
foreach ($rcpts as $rcpt) {
$mail->AddAddress($rcpt);
if (!$mail->send()) {
$_SESSION['return'][] = array(
'type' => 'warning',
'log' => array(__FUNCTION__),
'msg' => 'Mailer error (RCPT "' . htmlspecialchars($rcpt) . '"): ' . str_replace('https://github.com/PHPMailer/PHPMailer/wiki/Troubleshooting', '', $mail->ErrorInfo)
);
}
$mail->ClearAllRecipients();
}
}
$_SESSION['return'][] = array(
'type' => 'success',
'log' => array(__FUNCTION__),
'msg' => 'Mass mail job completed, sent ' . count($rcpts) . ' mails'
);
}
function logger($_data = false) {
/*
logger() will be called as last function
To manually log a message, logger needs to be called like below.
logger(array(
'return' => array(
array(
'type' => 'danger',
'log' => array(__FUNCTION__),
'msg' => $err
)
)
));
These messages will not be printed as alert box.
To do so, push them to $_SESSION['return'] and do not call logger as they will be included automatically:
$_SESSION['return'][] = array(
'type' => 'danger',
'log' => array(__FUNCTION__, $user, '*'),
'msg' => $err
);
*/
global $pdo;
if (!$_data) {
$_data = $_SESSION;
}
if (!empty($_data['return'])) {
$task = substr(strtoupper(md5(uniqid(rand(), true))), 0, 6);
foreach ($_data['return'] as $return) {
$type = $return['type'];
$msg = null;
if (isset($return['msg'])) {
$msg = json_encode($return['msg'], JSON_UNESCAPED_UNICODE);
}
$call = null;
if (isset($return['log'])) {
$call = json_encode($return['log'], JSON_UNESCAPED_UNICODE);
}
if (!empty($_SESSION["dual-login"]["username"])) {
$user = $_SESSION["dual-login"]["username"] . ' => ' . $_SESSION['mailcow_cc_username'];
$role = $_SESSION["dual-login"]["role"] . ' => ' . $_SESSION['mailcow_cc_role'];
}
elseif (!empty($_SESSION['mailcow_cc_username'])) {
$user = $_SESSION['mailcow_cc_username'];
$role = $_SESSION['mailcow_cc_role'];
}
else {
$user = 'unauthenticated';
$role = 'unauthenticated';
}
// We cannot log when logs is missing...
try {
$stmt = $pdo->prepare("INSERT INTO `logs` (`type`, `task`, `msg`, `call`, `user`, `role`, `remote`, `time`) VALUES
(:type, :task, :msg, :call, :user, :role, :remote, UNIX_TIMESTAMP())");
$stmt->execute(array(
':type' => $type,
':task' => $task,
':call' => $call,
':msg' => $msg,
':user' => $user,
':role' => $role,
':remote' => get_remote_ip()
));
}
catch (PDOException $e) {
# handle the exception here, as the exception handler function results in a white page
error_log($e->getMessage(), 0);
}
}
}
else {
return true;
}
}
function hasDomainAccess($username, $role, $domain) {
global $pdo;
if (!filter_var($username, FILTER_VALIDATE_EMAIL) && !ctype_alnum(str_replace(array('_', '.', '-'), '', $username))) {
return false;
}
if (empty($domain) || !is_valid_domain_name($domain)) {
return false;
}
if ($role != 'admin' && $role != 'domainadmin') {
return false;
}
if ($role == 'admin') {
$stmt = $pdo->prepare("SELECT `domain` FROM `domain`
WHERE `domain` = :domain");
$stmt->execute(array(':domain' => $domain));
$num_results = count($stmt->fetchAll(PDO::FETCH_ASSOC));
$stmt = $pdo->prepare("SELECT `alias_domain` FROM `alias_domain`
WHERE `alias_domain` = :domain");
$stmt->execute(array(':domain' => $domain));
$num_results = $num_results + count($stmt->fetchAll(PDO::FETCH_ASSOC));
if ($num_results != 0) {
return true;
}
}
elseif ($role == 'domainadmin') {
$stmt = $pdo->prepare("SELECT `domain` FROM `domain_admins`
WHERE (
`active`='1'
AND `username` = :username
AND (`domain` = :domain1 OR `domain` = (SELECT `target_domain` FROM `alias_domain` WHERE `alias_domain` = :domain2))
)");
$stmt->execute(array(':username' => $username, ':domain1' => $domain, ':domain2' => $domain));
$num_results = count($stmt->fetchAll(PDO::FETCH_ASSOC));
if (!empty($num_results)) {
return true;
}
}
return false;
}
function hasMailboxObjectAccess($username, $role, $object) {
global $pdo;
if (empty($username) || empty($role) || empty($object)) {
return false;
}
if (!filter_var(html_entity_decode(rawurldecode($username)), FILTER_VALIDATE_EMAIL) && !ctype_alnum(str_replace(array('_', '.', '-'), '', $username))) {
return false;
}
if ($role != 'admin' && $role != 'domainadmin' && $role != 'user') {
return false;
}
if ($username == $object) {
return true;
}
$stmt = $pdo->prepare("SELECT `domain` FROM `mailbox` WHERE `username` = :object");
$stmt->execute(array(':object' => $object));
$row = $stmt->fetch(PDO::FETCH_ASSOC);
if (isset($row['domain']) && hasDomainAccess($username, $role, $row['domain'])) {
return true;
} else {
$domain = substr(strrchr($object, "@"), 1);
if ( hasDomainAccess( $username, $role, $domain )) {
return true;
}
}
return false;
}
// does also verify mailboxes as a mailbox is a alias == goto
function hasAliasObjectAccess($username, $role, $object) {
global $pdo;
if (empty($username) || empty($role) || empty($object)) {
return false;
}
if (!filter_var(html_entity_decode(rawurldecode($username)), FILTER_VALIDATE_EMAIL) && !ctype_alnum(str_replace(array('_', '.', '-'), '', $username))) {
return false;
}
if ($role != 'admin' && $role != 'domainadmin' && $role != 'user') {
return false;
}
$stmt = $pdo->prepare("SELECT `domain` FROM `alias` WHERE `address` = :object");
$stmt->execute(array(':object' => $object));
$row = $stmt->fetch(PDO::FETCH_ASSOC);
if (isset($row['domain']) && hasDomainAccess($username, $role, $row['domain'])) {
return true;
}
return false;
}
function pem_to_der($pem_key) {
// Need to remove BEGIN/END PUBLIC KEY
$lines = explode("\n", trim($pem_key));
unset($lines[count($lines)-1]);
unset($lines[0]);
return base64_decode(implode('', $lines));
}
function expand_ipv6($ip) {
$hex = unpack("H*hex", inet_pton($ip));
$ip = substr(preg_replace("/([A-f0-9]{4})/", "$1:", $hex['hex']), 0, -1);
return $ip;
}
function generate_tlsa_digest($hostname, $port, $starttls = null) {
if (!is_valid_domain_name($hostname)) {
return "Not a valid hostname";
}
if (empty($starttls)) {
$context = stream_context_create(array("ssl" => array("capture_peer_cert" => true, 'verify_peer' => false, 'verify_peer_name' => false, 'allow_self_signed' => true)));
$stream = stream_socket_client('ssl://' . $hostname . ':' . $port, $error_nr, $error_msg, 5, STREAM_CLIENT_CONNECT, $context);
if (!$stream) {
$error_msg = isset($error_msg) ? $error_msg : '-';
return $error_nr . ': ' . $error_msg;
}
}
else {
$stream = stream_socket_client('tcp://' . $hostname . ':' . $port, $error_nr, $error_msg, 5);
if (!$stream) {
return $error_nr . ': ' . $error_msg;
}
$banner = fread($stream, 512 );
if (preg_match("/^220/i", $banner)) { // SMTP
fwrite($stream,"HELO tlsa.generator.local\r\n");
fread($stream, 512);
fwrite($stream,"STARTTLS\r\n");
fread($stream, 512);
}
elseif (preg_match("/imap.+starttls/i", $banner)) { // IMAP
fwrite($stream,"A1 STARTTLS\r\n");
fread($stream, 512);
}
elseif (preg_match("/^\+OK/", $banner)) { // POP3
fwrite($stream,"STLS\r\n");
fread($stream, 512);
}
elseif (preg_match("/^OK/m", $banner)) { // Sieve
fwrite($stream,"STARTTLS\r\n");
fread($stream, 512);
}
else {
return 'Unknown banner: "' . htmlspecialchars(trim($banner)) . '"';
}
// Upgrade connection
stream_set_blocking($stream, true);
stream_context_set_option($stream, 'ssl', 'capture_peer_cert', true);
stream_context_set_option($stream, 'ssl', 'verify_peer', false);
stream_context_set_option($stream, 'ssl', 'verify_peer_name', false);
stream_context_set_option($stream, 'ssl', 'allow_self_signed', true);
stream_socket_enable_crypto($stream, true, STREAM_CRYPTO_METHOD_ANY_CLIENT);
stream_set_blocking($stream, false);
}
$params = stream_context_get_params($stream);
if (!empty($params['options']['ssl']['peer_certificate'])) {
$key_resource = openssl_pkey_get_public($params['options']['ssl']['peer_certificate']);
// We cannot get ['rsa']['n'], the binary data would contain BEGIN/END PUBLIC KEY
$key_data = openssl_pkey_get_details($key_resource)['key'];
return '3 1 1 ' . openssl_digest(pem_to_der($key_data), 'sha256');
}
else {
return 'Error: Cannot read peer certificate';
}
}
function alertbox_log_parser($_data) {
global $lang;
if (isset($_data['return'])) {
foreach ($_data['return'] as $return) {
// Get type
$type = $return['type'];
// If a lang[type][msg] string exists, use it as message
if (isset($return['type']) && isset($return['msg']) && !is_array($return['msg'])) {
if (isset($lang[$return['type']][$return['msg']])) {
$msg = $lang[$return['type']][$return['msg']];
}
else {
$msg = $return['msg'];
}
}
// If msg is an array, use first element as language string and run printf on it with remaining array elements
elseif (is_array($return['msg'])) {
$msg = array_shift($return['msg']);
$msg = vsprintf(
$lang[$return['type']][$msg],
$return['msg']
);
}
else {
$msg = '-';
}
$log_array[] = array('msg' => $msg, 'type' => json_encode($type));
}
if (!empty($log_array)) {
return $log_array;
}
}
return false;
}
function verify_salted_hash($hash, $password, $algo, $salt_length) {
// Decode hash
$dhash = base64_decode($hash);
// Get first n bytes of binary which equals a SSHA hash
$ohash = substr($dhash, 0, $salt_length);
// Remove SSHA hash from decoded hash to get original salt string
$osalt = str_replace($ohash, '', $dhash);
// Check single salted SSHA hash against extracted hash
if (hash_equals(hash($algo, $password . $osalt, true), $ohash)) {
return true;
}
return false;
}
function verify_hash($hash, $password) {
if (preg_match('/^{(.+)}(.+)/i', $hash, $hash_array)) {
$scheme = strtoupper($hash_array[1]);
$hash = $hash_array[2];
switch ($scheme) {
case "ARGON2I":
case "ARGON2ID":
case "BLF-CRYPT":
case "CRYPT":
case "DES-CRYPT":
case "MD5-CRYPT":
case "MD5":
case "SHA256-CRYPT":
case "SHA512-CRYPT":
return password_verify($password, $hash);
case "CLEAR":
case "CLEARTEXT":
case "PLAIN":
return $password == $hash;
case "LDAP-MD5":
$hash = base64_decode($hash);
return hash_equals(hash('md5', $password, true), $hash);
case "PBKDF2":
$components = explode('$', $hash);
$salt = $components[2];
$rounds = $components[3];
$hash = $components[4];
return hash_equals(hash_pbkdf2('sha1', $password, $salt, $rounds), $hash);
case "PLAIN-MD4":
return hash_equals(hash('md4', $password), $hash);
case "PLAIN-MD5":
return md5($password) == $hash;
case "PLAIN-TRUNC":
$components = explode('-', $hash);
if (count($components) > 1) {
$trunc_len = $components[0];
$trunc_password = $components[1];
return substr($password, 0, $trunc_len) == $trunc_password;
} else {
return $password == $hash;
}
case "SHA":
case "SHA1":
case "SHA256":
case "SHA512":
// SHA is an alias for SHA1
$scheme = $scheme == "SHA" ? "sha1" : strtolower($scheme);
$hash = base64_decode($hash);
return hash_equals(hash($scheme, $password, true), $hash);
case "SMD5":
return verify_salted_hash($hash, $password, 'md5', 16);
case "SSHA":
return verify_salted_hash($hash, $password, 'sha1', 20);
case "SSHA256":
return verify_salted_hash($hash, $password, 'sha256', 32);
case "SSHA512":
return verify_salted_hash($hash, $password, 'sha512', 64);
default:
return false;
}
}
return false;
}
function check_login($user, $pass, $app_passwd_data = false) {
global $pdo;
global $redis;
global $imap_server;
if (!filter_var($user, FILTER_VALIDATE_EMAIL) && !ctype_alnum(str_replace(array('_', '.', '-'), '', $user))) {
$_SESSION['return'][] = array(
'type' => 'danger',
'log' => array(__FUNCTION__, $user, '*'),
'msg' => 'malformed_username'
);
return false;
}
// Validate admin
$user = strtolower(trim($user));
$stmt = $pdo->prepare("SELECT `password` FROM `admin`
WHERE `superadmin` = '1'
AND `active` = '1'
AND `username` = :user");
$stmt->execute(array(':user' => $user));
$rows = $stmt->fetchAll(PDO::FETCH_ASSOC);
foreach ($rows as $row) {
// verify password
if (verify_hash($row['password'], $pass)) {
// check for tfa authenticators
$authenticators = get_tfa($user);
if (isset($authenticators['additional']) && is_array($authenticators['additional']) && count($authenticators['additional']) > 0) {
// active tfa authenticators found, set pending user login
$_SESSION['pending_mailcow_cc_username'] = $user;
$_SESSION['pending_mailcow_cc_role'] = "admin";
$_SESSION['pending_tfa_methods'] = $authenticators['additional'];
unset($_SESSION['ldelay']);
$_SESSION['return'][] = array(
'type' => 'info',
'log' => array(__FUNCTION__, $user, '*'),
'msg' => 'awaiting_tfa_confirmation'
);
return "pending";
} else {
unset($_SESSION['ldelay']);
// Reactivate TFA if it was set to "deactivate TFA for next login"
$stmt = $pdo->prepare("UPDATE `tfa` SET `active`='1' WHERE `username` = :user");
$stmt->execute(array(':user' => $user));
$_SESSION['return'][] = array(
'type' => 'success',
'log' => array(__FUNCTION__, $user, '*'),
'msg' => array('logged_in_as', $user)
);
return "admin";
}
}
}
// Validate domain admin
$stmt = $pdo->prepare("SELECT `password` FROM `admin`
WHERE `superadmin` = '0'
AND `active`='1'
AND `username` = :user");
$stmt->execute(array(':user' => $user));
$rows = $stmt->fetchAll(PDO::FETCH_ASSOC);
foreach ($rows as $row) {
// verify password
if (verify_hash($row['password'], $pass) !== false) {
// check for tfa authenticators
$authenticators = get_tfa($user);
if (isset($authenticators['additional']) && is_array($authenticators['additional']) && count($authenticators['additional']) > 0) {
$_SESSION['pending_mailcow_cc_username'] = $user;
$_SESSION['pending_mailcow_cc_role'] = "domainadmin";
$_SESSION['pending_tfa_methods'] = $authenticators['additional'];
unset($_SESSION['ldelay']);
$_SESSION['return'][] = array(
'type' => 'info',
'log' => array(__FUNCTION__, $user, '*'),
'msg' => 'awaiting_tfa_confirmation'
);
return "pending";
}
else {
unset($_SESSION['ldelay']);
// Reactivate TFA if it was set to "deactivate TFA for next login"
$stmt = $pdo->prepare("UPDATE `tfa` SET `active`='1' WHERE `username` = :user");
$stmt->execute(array(':user' => $user));
$_SESSION['return'][] = array(
'type' => 'success',
'log' => array(__FUNCTION__, $user, '*'),
'msg' => array('logged_in_as', $user)
);
return "domainadmin";
}
}
}
// Validate mailbox user
$stmt = $pdo->prepare("SELECT `password` FROM `mailbox`
INNER JOIN domain on mailbox.domain = domain.domain
WHERE `kind` NOT REGEXP 'location|thing|group'
AND `mailbox`.`active`='1'
AND `domain`.`active`='1'
AND `username` = :user");
$stmt->execute(array(':user' => $user));
$rows = $stmt->fetchAll(PDO::FETCH_ASSOC);
if ($app_passwd_data['eas'] === true) {
$stmt = $pdo->prepare("SELECT `app_passwd`.`password` as `password`, `app_passwd`.`id` as `app_passwd_id` FROM `app_passwd`
INNER JOIN `mailbox` ON `mailbox`.`username` = `app_passwd`.`mailbox`
INNER JOIN `domain` ON `mailbox`.`domain` = `domain`.`domain`
WHERE `mailbox`.`kind` NOT REGEXP 'location|thing|group'
AND `mailbox`.`active` = '1'
AND `domain`.`active` = '1'
AND `app_passwd`.`active` = '1'
AND `app_passwd`.`eas_access` = '1'
AND `app_passwd`.`mailbox` = :user");
$stmt->execute(array(':user' => $user));
$rows = array_merge($rows, $stmt->fetchAll(PDO::FETCH_ASSOC));
}
elseif ($app_passwd_data['dav'] === true) {
$stmt = $pdo->prepare("SELECT `app_passwd`.`password` as `password`, `app_passwd`.`id` as `app_passwd_id` FROM `app_passwd`
INNER JOIN `mailbox` ON `mailbox`.`username` = `app_passwd`.`mailbox`
INNER JOIN `domain` ON `mailbox`.`domain` = `domain`.`domain`
WHERE `mailbox`.`kind` NOT REGEXP 'location|thing|group'
AND `mailbox`.`active` = '1'
AND `domain`.`active` = '1'
AND `app_passwd`.`active` = '1'
AND `app_passwd`.`dav_access` = '1'
AND `app_passwd`.`mailbox` = :user");
$stmt->execute(array(':user' => $user));
$rows = array_merge($rows, $stmt->fetchAll(PDO::FETCH_ASSOC));
}
foreach ($rows as $row) {
// verify password
if (verify_hash($row['password'], $pass) !== false) {
if (!array_key_exists("app_passwd_id", $row)){
// password is not a app password
// check for tfa authenticators
$authenticators = get_tfa($user);
if (isset($authenticators['additional']) && is_array($authenticators['additional']) && count($authenticators['additional']) > 0 &&
$app_passwd_data['eas'] !== true && $app_passwd_data['dav'] !== true) {
// authenticators found, init TFA flow
$_SESSION['pending_mailcow_cc_username'] = $user;
$_SESSION['pending_mailcow_cc_role'] = "user";
$_SESSION['pending_tfa_methods'] = $authenticators['additional'];
unset($_SESSION['ldelay']);
return "pending";
} else if (!isset($authenticators['additional']) || !is_array($authenticators['additional']) || count($authenticators['additional']) == 0) {
// no authenticators found, login successfull
// Reactivate TFA if it was set to "deactivate TFA for next login"
$stmt = $pdo->prepare("UPDATE `tfa` SET `active`='1' WHERE `username` = :user");
$stmt->execute(array(':user' => $user));
unset($_SESSION['ldelay']);
$_SESSION['return'][] = array(
'type' => 'success',
'log' => array(__FUNCTION__, $user, '*'),
'msg' => array('logged_in_as', $user)
);
return "user";
}
} elseif ($app_passwd_data['eas'] === true || $app_passwd_data['dav'] === true) {
// password is a app password
$service = ($app_passwd_data['eas'] === true) ? 'EAS' : 'DAV';
$stmt = $pdo->prepare("REPLACE INTO sasl_log (`service`, `app_password`, `username`, `real_rip`) VALUES (:service, :app_id, :username, :remote_addr)");
$stmt->execute(array(
':service' => $service,
':app_id' => $row['app_passwd_id'],
':username' => $user,
':remote_addr' => ($_SERVER['HTTP_X_REAL_IP'] ?? $_SERVER['REMOTE_ADDR'])
));
unset($_SESSION['ldelay']);
return "user";
}
}
}
if (!isset($_SESSION['ldelay'])) {
$_SESSION['ldelay'] = "0";
$redis->publish("F2B_CHANNEL", "mailcow UI: Invalid password for " . $user . " by " . $_SERVER['REMOTE_ADDR']);
error_log("mailcow UI: Invalid password for " . $user . " by " . $_SERVER['REMOTE_ADDR']);
}
elseif (!isset($_SESSION['mailcow_cc_username'])) {
$_SESSION['ldelay'] = $_SESSION['ldelay']+0.5;
$redis->publish("F2B_CHANNEL", "mailcow UI: Invalid password for " . $user . " by " . $_SERVER['REMOTE_ADDR']);