| 1 |
<?php |
| 2 |
|
| 3 |
// Do not allow the file to be called directly. |
| 4 |
if ( ! defined( 'ABSPATH' ) ) { |
| 5 |
exit; |
| 6 |
} |
| 7 |
|
| 8 |
/** |
| 9 |
* This class is used to alter anything related to the login page. |
| 10 |
*/ |
| 11 |
class P_Login extends P_Core { |
| 12 |
|
| 13 |
/** |
| 14 |
* Add the actions required to interact with the login process. |
| 15 |
* |
| 16 |
* @param Patchstack $core |
| 17 |
* @return void |
| 18 |
*/ |
| 19 |
public function __construct( $core ) { |
| 20 |
parent::__construct( $core ); |
| 21 |
|
| 22 |
if ( $this->get_option( 'patchstack_license_free', 0 ) == 1 || $this->is_community() ) { |
| 23 |
return; |
| 24 |
} |
| 25 |
|
| 26 |
add_action( 'login_init', [ $this, 'add_captcha' ] ); |
| 27 |
add_action( 'login_init', [ $this, 'check_ipban' ] ); |
| 28 |
add_action( 'login_init', [ $this, 'check_logonhours' ] ); |
| 29 |
add_action( 'login_head', [ $this, 'add_captcha' ] ); |
| 30 |
add_action( 'login_enqueue_scripts', [ $this, 'login_enqueue_scripts' ], 1 ); |
| 31 |
|
| 32 |
// 2FA related actions. |
| 33 |
if ( $this->get_option( 'patchstack_login_2fa', 0 ) ) { |
| 34 |
add_action( 'login_form', [ $this, 'tfa_login_form' ] ); |
| 35 |
add_action( 'authenticate', [ $this, 'tfa_authenticate' ], 30, 3 ); |
| 36 |
add_action( 'profile_personal_options', [ $this, 'tfa_profile_personal_options' ] ); |
| 37 |
add_action( 'personal_options_update', [ $this, 'tfa_personal_options_update' ] ); |
| 38 |
add_action( 'admin_enqueue_scripts', [ $this, 'tfa_admin_enqueue_scripts' ] ); |
| 39 |
} |
| 40 |
} |
| 41 |
|
| 42 |
/** |
| 43 |
* Register the Google reCAPTCHA JavaScript for the login area. |
| 44 |
* |
| 45 |
* @return void |
| 46 |
*/ |
| 47 |
public function login_enqueue_scripts() { |
| 48 |
if ( $this->get_option( 'patchstack_captcha_login_form', false ) && $this->get_option( 'patchstack_captcha_type' ) != 'v3' ) { |
| 49 |
wp_enqueue_script( 'patchstack_captcha', 'https://www.google.com/recaptcha/api.js' ); |
| 50 |
} |
| 51 |
} |
| 52 |
|
| 53 |
/** |
| 54 |
* Add the 2FA code to the login form. |
| 55 |
* |
| 56 |
* @return void |
| 57 |
*/ |
| 58 |
public function tfa_login_form() { |
| 59 |
require_once dirname( __FILE__ ) . '/views/2fa-login-form.php'; |
| 60 |
} |
| 61 |
|
| 62 |
/** |
| 63 |
* Check the 2FA code, if 2FA is enabled for the user. |
| 64 |
* |
| 65 |
* @param object $user |
| 66 |
* @param string $username |
| 67 |
* @param string $password |
| 68 |
* @return object|WP_User|WP_Error |
| 69 |
*/ |
| 70 |
public function tfa_authenticate( $user, $username = '', $password = '' ) { |
| 71 |
if ( ! isset( $user->ID ) ) { |
| 72 |
return $user; |
| 73 |
} |
| 74 |
|
| 75 |
// If we have a valid user object, check to see if the user has 2FA enabled. |
| 76 |
$enabled = get_user_option( 'webarx_2fa_enabled', $user->ID ); |
| 77 |
if ( empty( $enabled ) ) { |
| 78 |
return $user; |
| 79 |
} |
| 80 |
|
| 81 |
// If enabled, check to see if the verification code is being sent. |
| 82 |
if ( ! isset( $_POST['patchstack_2fa'] ) || ( isset( $_POST['patchstack_2fa'] ) && $_POST['patchstack_2fa'] == '' ) ) { |
| 83 |
return new WP_Error( 'patchstack_2fa_empty_code', __( 'Please enter the 2FA authentication code that is generated on your device.', 'patchstack' ) ); |
| 84 |
} |
| 85 |
|
| 86 |
// Verify the code. |
| 87 |
require_once dirname( __FILE__ ) . '/2fa/rfc6238.php'; |
| 88 |
$secret = $this->tfa_get_secret( $user ); |
| 89 |
if ( ! TokenAuth6238::verify( $secret, trim( $_POST['patchstack_2fa'] ) ) ) { |
| 90 |
return new WP_Error( 'patchstack_2fa_invalid_code', __( 'The 2FA authentication code you entered is invalid.', 'patchstack' ) ); |
| 91 |
} |
| 92 |
|
| 93 |
return $user; |
| 94 |
} |
| 95 |
|
| 96 |
/** |
| 97 |
* Show the 2FA fields. |
| 98 |
* |
| 99 |
* @param object $user |
| 100 |
* @return void |
| 101 |
*/ |
| 102 |
public function tfa_profile_personal_options( $user ) { |
| 103 |
$secret = $this->tfa_get_secret( $user ); |
| 104 |
require_once dirname( __FILE__ ) . '/views/2fa-profile-configuration.php'; |
| 105 |
} |
| 106 |
|
| 107 |
/** |
| 108 |
* Update the 2FA fields. |
| 109 |
* |
| 110 |
* @param integer $user_id |
| 111 |
* @return void |
| 112 |
*/ |
| 113 |
public function tfa_personal_options_update( $user_id ) { |
| 114 |
update_user_option( $user_id, 'webarx_2fa_enabled', ! empty( $_POST['patchstack_2fa_enabled'] ), true ); |
| 115 |
} |
| 116 |
|
| 117 |
/** |
| 118 |
* Add the QRCode image generator JavaScript library. |
| 119 |
* |
| 120 |
* @return void |
| 121 |
*/ |
| 122 |
public function tfa_admin_enqueue_scripts() { |
| 123 |
wp_register_script( 'patchstack_qrcode', $this->plugin->url . '/assets/js/qrcode.min.js', [], $this->plugin->version ); |
| 124 |
wp_enqueue_script( 'patchstack_qrcode' ); |
| 125 |
} |
| 126 |
|
| 127 |
/** |
| 128 |
* In case of legacy conditions, we encrypt the secret key and then store it. |
| 129 |
* |
| 130 |
* @return string |
| 131 |
*/ |
| 132 |
private function tfa_get_secret( $user ) { |
| 133 |
$secret = get_user_option( 'webarx_2fa_secretkey', $user->ID ); |
| 134 |
|
| 135 |
// If user has no secret key set yet, generate one. |
| 136 |
if ( empty( $secret ) || strlen( $secret ) === 16 ) { |
| 137 |
if ( empty( $secret ) ) { |
| 138 |
require_once dirname( __FILE__ ) . '/2fa/rfc6238.php'; |
| 139 |
$secret = TokenAuth6238::generateRandomClue(); |
| 140 |
} |
| 141 |
|
| 142 |
$enc = $this->encrypt( $secret ); |
| 143 |
update_user_option( $user->ID, 'webarx_2fa_secretkey', $enc['cipher'], true ); |
| 144 |
update_user_option( $user->ID, 'webarx_2fa_secretkey_nonce', $enc['nonce'], true ); |
| 145 |
} else { |
| 146 |
$nonce = get_user_option( 'webarx_2fa_secretkey_nonce', $user->ID ); |
| 147 |
$secret = $this->decrypt( $secret, $nonce ); |
| 148 |
} |
| 149 |
|
| 150 |
return $secret; |
| 151 |
} |
| 152 |
|
| 153 |
/** |
| 154 |
* Check if the IP address is banned from attempting to guess passwords. |
| 155 |
* |
| 156 |
* @return void |
| 157 |
*/ |
| 158 |
public function check_ipban() { |
| 159 |
if ( is_user_logged_in() || ! $this->get_option( 'patchstack_block_bruteforce_ips', 0 ) ) { |
| 160 |
return; |
| 161 |
} |
| 162 |
|
| 163 |
// Check if the users IP address is whitelisted. |
| 164 |
$ip = $this->get_ip(); |
| 165 |
if ( $this->plugin->ban->is_ip_whitelisted( $ip ) ) { |
| 166 |
return; |
| 167 |
} |
| 168 |
|
| 169 |
// Calculate block time. |
| 170 |
$minutes = (int) $this->get_option( 'patchstack_anti_bruteforce_minutes', 30 ); |
| 171 |
$timeout = (int) $this->get_option( 'patchstack_anti_bruteforce_blocktime', 60 ); |
| 172 |
if ( empty( $minutes ) || empty( $timeout ) ) { |
| 173 |
$time = 30 + 60; |
| 174 |
} else { |
| 175 |
$time = $minutes + $timeout; |
| 176 |
} |
| 177 |
|
| 178 |
// Check if X failed login attempts were made. |
| 179 |
global $wpdb; |
| 180 |
$results = $wpdb->get_results( |
| 181 |
$wpdb->prepare( 'SELECT COUNT(*) AS numIps FROM ' . $wpdb->prefix . "patchstack_event_log WHERE ip = '%s' AND action = 'failed login' AND date >= ('" . current_time( 'mysql' ) . "' - INTERVAL %d MINUTE)", [ $ip, $time ] ), |
| 182 |
OBJECT |
| 183 |
); |
| 184 |
|
| 185 |
// Determine the number of attempts. |
| 186 |
if ( ! isset( $results, $results[0], $results[0]->numIps ) ) { |
| 187 |
$num = 0; |
| 188 |
} else { |
| 189 |
$num = $results[0]->numIps; |
| 190 |
} |
| 191 |
|
| 192 |
// Block the user? |
| 193 |
if ( $num >= $this->get_option( 'patchstack_anti_bruteforce_attempts', 10 ) ) { |
| 194 |
$this->plugin->firewall_base->display_error_page( 24 ); |
| 195 |
} |
| 196 |
} |
| 197 |
|
| 198 |
/** |
| 199 |
* If logon hours are set, check the current time and allow or disallow the user |
| 200 |
* to login depending on the settings. |
| 201 |
* |
| 202 |
* @return void |
| 203 |
*/ |
| 204 |
public function check_logonhours() { |
| 205 |
if ( ! $this->get_option( 'patchstack_login_time_block', 0 ) || is_user_logged_in() || $this->get_option( 'patchstack_login_time_start', '00:00' ) == $this->get_option( 'patchstack_login_time_end', '23:59' ) ) { |
| 206 |
return; |
| 207 |
} |
| 208 |
$block = true; |
| 209 |
|
| 210 |
// Current time. |
| 211 |
$hour = current_time( 'G' ); |
| 212 |
$min = current_time( 'i' ); |
| 213 |
$stamp_current = current_time( 'U' ); |
| 214 |
|
| 215 |
// Get time start. |
| 216 |
$start = explode( ':', str_replace( '00', '0', $this->get_option( 'patchstack_login_time_start', '00:00' ) ) ); |
| 217 |
if ( count( $start ) != 2 ) { |
| 218 |
return; |
| 219 |
} |
| 220 |
$stamp_start = strtotime( current_time( 'Y-m-d' ) . ' ' . $this->get_option( 'patchstack_login_time_start', '00:00' ) . ':00' ); |
| 221 |
$start[0] = (int) $start[0]; |
| 222 |
$start[1] = (int) $start[1]; |
| 223 |
|
| 224 |
// Get time end. |
| 225 |
$end = explode( ':', str_replace( '00', '0', $this->get_option( 'patchstack_login_time_end', '23:59' ) ) ); |
| 226 |
if ( count( $end ) != 2 ) { |
| 227 |
return; |
| 228 |
} |
| 229 |
$stamp_end = strtotime( current_time( 'Y-m-d' ) . ' ' . $this->get_option( 'patchstack_login_time_end', '00:00' ) . ':00' ); |
| 230 |
$end[0] = (int) $end[0]; |
| 231 |
$end[1] = (int) $end[1]; |
| 232 |
|
| 233 |
// If begin time is earlier than end time. |
| 234 |
if ( $start[0] <= $end[0] && $stamp_current >= $stamp_start && $stamp_current <= $stamp_end ) { |
| 235 |
$block = false; |
| 236 |
} |
| 237 |
|
| 238 |
// If begin time is later than end time. |
| 239 |
if ( $start[0] > $end[0] && ( $hour >= $start[0] || $hour <= $end[0] ) ) { |
| 240 |
$block = false; |
| 241 |
|
| 242 |
if ( ( $hour == $start[0] && $min < $start[1] ) || ( $hour == $end[0] && $min > $end[1] ) ) { |
| 243 |
$block = true; |
| 244 |
} |
| 245 |
} |
| 246 |
|
| 247 |
// Block the user? |
| 248 |
if ( $block ) { |
| 249 |
wp_die( __( 'Access to the login page has been restricted due to set logon hours.', 'patchstack' ), __( 'Login Disallowed', 'patchstack' ) ); |
| 250 |
} |
| 251 |
} |
| 252 |
|
| 253 |
/** |
| 254 |
* Determine if we should inject reCAPTCHA into certain pages. |
| 255 |
* |
| 256 |
* @return void |
| 257 |
*/ |
| 258 |
public function add_captcha() { |
| 259 |
switch ( $this->get_option( 'patchstack_captcha_type' ) ) { |
| 260 |
case 'v2': |
| 261 |
$public = $this->get_option( 'patchstack_captcha_public_key', '' ); |
| 262 |
$private = $this->get_option( 'patchstack_captcha_private_key', '' ); |
| 263 |
break; |
| 264 |
case 'invisible': |
| 265 |
$public = $this->get_option( 'patchstack_captcha_public_key_v3', '' ); |
| 266 |
$private = $this->get_option( 'patchstack_captcha_private_key_v3', '' ); |
| 267 |
break; |
| 268 |
case 'v3': |
| 269 |
$public = $this->get_option( 'patchstack_captcha_public_key_v3_new', '' ); |
| 270 |
$private = $this->get_option( 'patchstack_captcha_private_key_v3_new', '' ); |
| 271 |
break; |
| 272 |
default: |
| 273 |
return; |
| 274 |
break; |
| 275 |
} |
| 276 |
|
| 277 |
// Make sure that the keys are set. |
| 278 |
if ( $public == '' || $private == '' ) { |
| 279 |
return; |
| 280 |
} |
| 281 |
|
| 282 |
// reCAPTCHA on the login page. |
| 283 |
if ( $this->get_option( 'patchstack_captcha_login_form' ) ) { |
| 284 |
add_filter( 'login_form', [ $this->plugin->hardening, 'captcha_display' ] ); |
| 285 |
add_filter( 'wp_authenticate_user', [ $this, 'login_captcha_check' ], 10, 2 ); |
| 286 |
} |
| 287 |
|
| 288 |
// reCAPTCHA on the registration form. |
| 289 |
if ( $this->get_option( 'patchstack_captcha_registration_form' ) ) { |
| 290 |
add_action( 'register_form', [ $this->plugin->hardening, 'captcha_display' ] ); |
| 291 |
add_action( 'registration_errors', [ $this, 'general_captcha_check' ] ); |
| 292 |
} |
| 293 |
|
| 294 |
// reCAPTCHA on the reset password form. |
| 295 |
if ( $this->get_option( 'patchstack_captcha_reset_pwd_form' ) ) { |
| 296 |
add_action( 'lostpassword_form', [ $this->plugin->hardening, 'captcha_display' ] ); |
| 297 |
add_action( 'allow_password_reset', [ $this, 'general_captcha_check' ] ); |
| 298 |
} |
| 299 |
} |
| 300 |
|
| 301 |
/** |
| 302 |
* Check reCAPTCHA upon login. |
| 303 |
* |
| 304 |
* @param string $user |
| 305 |
* @param string $password |
| 306 |
* @return WP_User|WP_Error |
| 307 |
*/ |
| 308 |
public function login_captcha_check( $user, $password ) { |
| 309 |
$result = $this->plugin->hardening->captcha_check(); |
| 310 |
|
| 311 |
if ( ! $result['response'] ) { |
| 312 |
if ( $result['reason'] === 'ERROR_NO_KEYS' ) { |
| 313 |
return $user; |
| 314 |
} |
| 315 |
$error_message = sprintf( '<strong>%s</strong>: %s', 'Error', __( 'You have entered an incorrect reCAPTCHA value.', 'patchstack' ) ); |
| 316 |
|
| 317 |
if ( $result['reason'] === 'VERIFICATION_FAILED' || $result['reason'] === 'RECAPTCHA_EMPTY_RESPONSE' ) { |
| 318 |
wp_clear_auth_cookie(); |
| 319 |
return new WP_Error( 'patchstack_error', $error_message ); |
| 320 |
} |
| 321 |
|
| 322 |
if ( isset( $_REQUEST['log'], $_REQUEST['pwd'] ) ) { |
| 323 |
return new WP_Error( 'patchstack_error', $error_message ); |
| 324 |
} |
| 325 |
} else { |
| 326 |
return $user; |
| 327 |
} |
| 328 |
} |
| 329 |
|
| 330 |
/** |
| 331 |
* Captcha check for the register or lost password form. |
| 332 |
* |
| 333 |
* @param mixed|WP_Error $error |
| 334 |
* @return WP_Error |
| 335 |
*/ |
| 336 |
public function general_captcha_check( $error ) { |
| 337 |
$result = $this->plugin->hardening->captcha_check(); |
| 338 |
|
| 339 |
if ( $result['response'] || $result['reason'] == 'ERROR_NO_KEYS' ) { |
| 340 |
return $error; |
| 341 |
} |
| 342 |
|
| 343 |
if ( ! is_wp_error( $error ) ) { |
| 344 |
$error = new WP_Error(); |
| 345 |
} |
| 346 |
|
| 347 |
$error->add( 'patchstack_error', 'ERROR' . ': ' . __( 'You have entered an incorrect reCAPTCHA value. Refresh this page and try again.', 'patchstack' ) ); |
| 348 |
return $error; |
| 349 |
} |
| 350 |
} |
| 351 |
|
