<?php
class wfCredentialsController {
const UNCACHED = 'uncached';
const NOT_LEAKED = 'not-leaked';
const LEAKED = 'leaked';
const ALLOW_LEGACY_2FA_OPTION = 'allowLegacy2FA';
const DISABLE_LEGACY_2FA_OPTION = 'disableLegacy2FA';
public static function allowLegacy2FA() {
return wfConfig::get(self::ALLOW_LEGACY_2FA_OPTION, false);
}
public static function useLegacy2FA() {
if (!self::allowLegacy2FA()) {
return false;
}
return !wfConfig::get(self::DISABLE_LEGACY_2FA_OPTION, false);
}
public static function hasOld2FARecords() {
$twoFactorUsers = wfConfig::get_ser('twoFactorUsers', array());
if (is_array($twoFactorUsers) && !empty($twoFactorUsers)) {
foreach ($twoFactorUsers as &$t) {
if ($t[3] == 'activated') {
$user = new WP_User($t[0]);
if ($user instanceof WP_User && $user->exists()) {
return true;
}
}
}
}
return false;
}
public static function hasNew2FARecords() {
if (version_compare(phpversion(), '5.3', '>=') && class_exists('\WordfenceLS\Controller_DB')) {
global $wpdb;
$table = WFLSPHP52Compatability::secrets_table();
return !!intval($wpdb->get_var("SELECT COUNT(*) FROM `{$table}`"));
}
return false;
}
/**
* Queries the API and returns whether or not the password exists in the breach database.
*
* @param string $login
* @param string $password
* @return bool
*/
public static function isLeakedPassword($login, $password) {
$sha1 = strtoupper(hash('sha1', $password));
$prefix = substr($sha1, 0, 5);
$ssl_verify = (bool) wfConfig::get('ssl_verify');
$args = array(
'timeout' => 5,
'user-agent' => "Wordfence.com UA " . (defined('WORDFENCE_VERSION') ? WORDFENCE_VERSION : '[Unknown version]'),
'sslverify' => $ssl_verify,
'headers' => array('Referer' => false),
);
if (!$ssl_verify) { // Some versions of cURL will complain that SSL verification is disabled but the CA bundle was supplied.
$args['sslcertificates'] = false;
}
$response = wp_remote_get(sprintf(WORDFENCE_BREACH_URL_BASE_SEC . "%s.txt", $prefix), $args);
if (!is_wp_error($response)) {
$data = wp_remote_retrieve_body($response);
$lines = explode("\n", $data);
foreach ($lines as $l) {
$components = explode(":", $l);
$teshSHA1 = $prefix . strtoupper($components[0]);
if (hash_equals($sha1, $teshSHA1)) {
return true;
}
}
}
return false;
}
/**
* Returns the transient key for the given user.
*
* @param WP_User $user
* @return string
*/
protected static function _cachedCredentialStatusKey($user) {
$key = 'wfcredentialstatus_' . $user->ID;
return $key;
}
/**
* Returns the cached credential status for the given user: self::UNCACHED, self::NOT_LEAKED, or self::LEAKED.
*
* @param WP_User $user
* @return string
*/
public static function cachedCredentialStatus($user) {
$key = self::_cachedCredentialStatusKey($user);
$value = get_transient($key);
if ($value === false) {
return self::UNCACHED;
}
$status = substr($value, 0, 1);
if (strlen($value) > 1) {
if (!hash_equals(substr($value, 1), hash('sha256', $user->user_pass))) { //Different hash but our clear function wasn't called so treat it as uncached
return self::UNCACHED;
}
}
if ($status) {
return self::LEAKED;
}
return self::NOT_LEAKED;
}
/**
* Stores a cached leak value for the given user.
*
* @param WP_User $user
* @param bool $isLeaked
*/
public static function setCachedCredentialStatus($user, $isLeaked) {
$key = self::_cachedCredentialStatusKey($user);
set_transient($key, ($isLeaked ? '1' : '0') . hash('sha256', $user->user_pass), 3600);
}
/**
* Clears the cache for the given user.
*
* @param WP_User $user
*/
public static function clearCachedCredentialStatus($user) {
$key = self::_cachedCredentialStatusKey($user);
delete_transient($key);
}
/**
* Returns whether or not we've seen a successful login from $ip for the given user.
*
* @param WP_User $user
* @param string $ip
* @return bool
*/
public static function hasPreviousLoginFromIP($user, $ip) {
global $wpdb;
$table_wfLogins = wfDB::networkTable('wfLogins');
$id = property_exists($user, 'ID') ? $user->ID : 0;
if ($id == 0) {
return false;
}
$ipHex = wfDB::binaryValueToSQLHex(wfUtils::inet_pton($ip));
$result = $wpdb->get_row($wpdb->prepare("SELECT id FROM {$table_wfLogins} WHERE action = 'loginOK' AND userID = %d AND IP = {$ipHex} LIMIT 0,1", $id), ARRAY_A);
if (is_array($result)) {
return true;
}
$lastAdminLogin = wfConfig::get_ser('lastAdminLogin');
if (is_array($lastAdminLogin) && isset($lastAdminLogin['userID']) && isset($lastAdminLogin['IP'])) {
if ($lastAdminLogin['userID'] == $id && wfUtils::inet_pton($lastAdminLogin['IP']) == wfUtils::inet_pton($ip)) {
return true;
}
return false;
}
//Final check -- if the IP recorded at plugin activation matches, let it through. This is __only__ checked when we don't have any other record of an admin login.
$activatingIP = wfConfig::get('activatingIP');
if (wfUtils::isValidIP($activatingIP)) {
if (wfUtils::inet_pton($activatingIP) == wfUtils::inet_pton($ip)) {
return true;
}
}
return false;
}
}