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<?php |
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|
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// Do not allow the file to be called directly. |
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if ( ! defined( 'ABSPATH' ) ) { |
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exit; |
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} |
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|
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/** |
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* This class is used to alter anything related to the login page. |
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*/ |
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class P_Login extends P_Core { |
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|
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/** |
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* Add the actions required to interact with the login process. |
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* |
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* @param Patchstack $core |
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* @return void |
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*/ |
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public function __construct( $core ) { |
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parent::__construct( $core ); |
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|
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if ( $this->get_option( 'patchstack_license_free', 0 ) == 1 ) { |
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return; |
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} |
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|
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add_action( 'login_init', array( $this, 'add_captcha' ) ); |
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add_action( 'login_init', array( $this, 'check_ipban' ) ); |
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add_action( 'login_init', array( $this, 'check_logonhours' ) ); |
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add_action( 'login_head', array( $this, 'add_captcha' ) ); |
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add_action( 'login_enqueue_scripts', array( $this, 'login_enqueue_scripts' ), 1 ); |
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|
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// 2FA related actions. |
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if ( $this->get_option( 'patchstack_login_2fa', 0 ) ) { |
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add_action( 'login_form', array( $this, 'tfa_login_form' ) ); |
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add_action( 'authenticate', array( $this, 'tfa_authenticate' ), 30, 3 ); |
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add_action( 'profile_personal_options', array( $this, 'tfa_profile_personal_options' ) ); |
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add_action( 'personal_options_update', array( $this, 'tfa_personal_options_update' ) ); |
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add_action( 'admin_enqueue_scripts', array( $this, 'tfa_admin_enqueue_scripts' ) ); |
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} |
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} |
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|
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/** |
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* Register the Google reCAPTCHA JavaScript for the login area. |
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* |
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* @return void |
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*/ |
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public function login_enqueue_scripts() { |
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if ( $this->get_option( 'patchstack_captcha_login_form', false ) && $this->get_option( 'patchstack_captcha_type' ) != 'v3' ) { |
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wp_enqueue_script( 'patchstack_captcha', 'https://www.google.com/recaptcha/api.js' ); |
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} |
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} |
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|
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/** |
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* Add the 2FA code to the login form. |
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* |
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* @return void |
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*/ |
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public function tfa_login_form() { |
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require_once dirname( __FILE__ ) . '/views/2fa-login-form.php'; |
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} |
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|
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/** |
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* Check the 2FA code, if 2FA is enabled for the user. |
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* |
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* @param object $user |
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* @param string $username |
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* @param string $password |
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* @return object|WP_User|WP_Error |
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*/ |
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public function tfa_authenticate( $user, $username = '', $password = '' ) { |
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if ( ! isset( $user->ID ) ) { |
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return $user; |
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} |
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|
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// If we have a valid user object, check to see if the user has 2FA enabled. |
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$enabled = get_user_option( 'webarx_2fa_enabled', $user->ID ); |
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$secret = get_user_option( 'webarx_2fa_secretkey', $user->ID ); |
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if ( empty( $enabled ) ) { |
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return $user; |
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} |
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|
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// If enabled, check to see if the verification code is being sent. |
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if ( ! isset( $_POST['patchstack_2fa'] ) || ( isset( $_POST['patchstack_2fa'] ) && $_POST['patchstack_2fa'] == '' ) ) { |
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return new WP_Error( 'patchstack_2fa_empty_code', __( 'Please enter the 2FA authentication code that is generated on your device.', 'patchstack' ) ); |
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} |
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|
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// Verify the code. |
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require_once dirname( __FILE__ ) . '/2fa/rfc6238.php'; |
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if ( ! TokenAuth6238::verify( $secret, trim( $_POST['patchstack_2fa'] ) ) ) { |
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return new WP_Error( 'patchstack_2fa_invalid_code', __( 'The 2FA authentication code you entered is invalid.', 'patchstack' ) ); |
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} |
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|
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return $user; |
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} |
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|
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/** |
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* Show the 2FA fields. |
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* |
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* @param object $user |
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* @return void |
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*/ |
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public function tfa_profile_personal_options( $user ) { |
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$secret = get_user_option( 'webarx_2fa_secretkey', $user->ID ); |
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|
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// If user has no secret key set yet, generate one. |
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if ( empty( $secret ) ) { |
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require_once dirname( __FILE__ ) . '/2fa/rfc6238.php'; |
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$secret = TokenAuth6238::generateRandomClue(); |
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update_user_option( $user->ID, 'webarx_2fa_secretkey', $secret, true ); |
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} |
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|
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require_once dirname( __FILE__ ) . '/views/2fa-profile-configuration.php'; |
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} |
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|
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/** |
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* Update the 2FA fields. |
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* |
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* @param integer $user_id |
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* @return void |
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*/ |
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public function tfa_personal_options_update( $user_id ) { |
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update_user_option( $user_id, 'webarx_2fa_enabled', ! empty( $_POST['patchstack_2fa_enabled'] ), true ); |
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} |
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|
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/** |
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* Add the QRCode image generator JavaScript library. |
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* |
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* @return void |
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*/ |
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public function tfa_admin_enqueue_scripts() { |
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wp_register_script( 'patchstack_qrcode', $this->plugin->url . '/assets/js/qrcode.min.js', array(), $this->plugin->version ); |
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wp_enqueue_script( 'patchstack_qrcode' ); |
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} |
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|
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/** |
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* Check if the IP address is banned from attempting to guess passwords. |
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* |
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* @return void |
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*/ |
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public function check_ipban() { |
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if ( is_user_logged_in() || ! $this->get_option( 'patchstack_block_bruteforce_ips', 0 ) ) { |
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return; |
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} |
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|
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// Check if the users IP address is whitelisted. |
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$ip = $this->get_ip(); |
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if ( $this->plugin->ban->is_ip_whitelisted( $ip ) ) { |
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return; |
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} |
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|
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// Check if X failed login attempts were made. |
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global $wpdb; |
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$results = $wpdb->get_results( |
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$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)", array( $ip, ( $this->get_option( 'patchstack_anti_bruteforce_blocktime', 60 ) + $this->get_option( 'patchstack_anti_bruteforce_minutes', 5 ) ) ) ), |
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OBJECT |
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); |
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|
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// Determine the number of attempts. |
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if ( ! isset( $results, $results[0], $results[0]->numIps ) ) { |
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$num = 0; |
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} else { |
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$num = $results[0]->numIps; |
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} |
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|
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// Block the user? |
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if ( $num >= $this->get_option( 'patchstack_anti_bruteforce_attempts', 10 ) ) { |
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$this->plugin->firewall_base->display_error_page( 22 ); |
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} |
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} |
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|
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/** |
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* If logon hours are set, check the current time and allow or disallow the user |
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* to login depending on the settings. |
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* |
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* @return void |
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*/ |
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public function check_logonhours() { |
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if ( ! $this->get_option( 'patchstack_login_time_block', 0 ) || is_user_logged_in() || $this->get_option( 'patchstack_login_time_start', '00:00' ) == $this->get_option( 'patchstack_login_time_end', '23:59' ) ) { |
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return; |
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} |
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$block = true; |
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|
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// Current time. |
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$hour = current_time( 'G' ); |
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$min = current_time( 'i' ); |
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$stamp_current = current_time( 'U' ); |
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|
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// Get time start. |
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$start = explode( ':', str_replace( '00', '0', $this->get_option( 'patchstack_login_time_start', '00:00' ) ) ); |
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if ( count( $start ) != 2 ) { |
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return; |
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} |
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$stamp_start = strtotime( current_time( 'Y-m-d' ) . ' ' . $this->get_option( 'patchstack_login_time_start', '00:00' ) . ':00' ); |
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$start[0] = (int) $start[0]; |
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$start[1] = (int) $start[1]; |
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|
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// Get time end. |
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$end = explode( ':', str_replace( '00', '0', $this->get_option( 'patchstack_login_time_end', '23:59' ) ) ); |
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if ( count( $end ) != 2 ) { |
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return; |
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} |
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$stamp_end = strtotime( current_time( 'Y-m-d' ) . ' ' . $this->get_option( 'patchstack_login_time_end', '00:00' ) . ':00' ); |
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$end[0] = (int) $end[0]; |
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$end[1] = (int) $end[1]; |
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|
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// If begin time is earlier than end time. |
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if ( $start[0] <= $end[0] && $stamp_current >= $stamp_start && $stamp_current <= $stamp_end ) { |
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$block = false; |
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} |
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|
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// If begin time is later than end time. |
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if ( $start[0] > $end[0] && ( $hour >= $start[0] || $hour <= $end[0] ) ) { |
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$block = false; |
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|
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if ( ( $hour == $start[0] && $min < $start[1] ) || ( $hour == $end[0] && $min > $end[1] ) ) { |
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$block = true; |
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} |
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} |
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|
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// Block the user? |
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if ( $block ) { |
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wp_die( __( 'Access to the login page has been restricted due to set logon hours.', 'patchstack' ), __( 'Login Disallowed', 'patchstack' ) ); |
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} |
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} |
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|
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/** |
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* Determine if we should inject reCAPTCHA into certain pages. |
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* |
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* @return void |
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*/ |
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public function add_captcha() { |
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switch ( $this->get_option( 'patchstack_captcha_type' ) ) { |
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case 'v2': |
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$public = $this->get_option( 'patchstack_captcha_public_key', '' ); |
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$private = $this->get_option( 'patchstack_captcha_private_key', '' ); |
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break; |
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case 'invisible': |
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$public = $this->get_option( 'patchstack_captcha_public_key_v3', '' ); |
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$private = $this->get_option( 'patchstack_captcha_private_key_v3', '' ); |
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break; |
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case 'v3': |
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$public = $this->get_option( 'patchstack_captcha_public_key_v3_new', '' ); |
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$private = $this->get_option( 'patchstack_captcha_private_key_v3_new', '' ); |
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break; |
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default: |
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return; |
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break; |
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} |
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|
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// Make sure that the keys are set. |
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if ( $public == '' || $private == '' ) { |
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return; |
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} |
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|
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// reCAPTCHA on the login page. |
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if ( $this->get_option( 'patchstack_captcha_login_form' ) ) { |
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add_filter( 'login_form', array( $this->plugin->hardening, 'captcha_display' ) ); |
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add_filter( 'wp_authenticate_user', array( $this, 'login_captcha_check' ), 10, 2 ); |
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} |
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|
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// reCAPTCHA on the registration form. |
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if ( $this->get_option( 'patchstack_captcha_registration_form' ) ) { |
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add_action( 'register_form', array( $this->plugin->hardening, 'captcha_display' ) ); |
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add_action( 'registration_errors', array( $this, 'general_captcha_check' ) ); |
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} |
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|
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// reCAPTCHA on the reset password form. |
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if ( $this->get_option( 'patchstack_captcha_reset_pwd_form' ) ) { |
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add_action( 'lostpassword_form', array( $this->plugin->hardening, 'captcha_display' ) ); |
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add_action( 'allow_password_reset', array( $this, 'general_captcha_check' ) ); |
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} |
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} |
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|
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/** |
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* Check reCAPTCHA upon login. |
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* |
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* @param string $user |
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* @param string $password |
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* @return WP_User|WP_Error |
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*/ |
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public function login_captcha_check( $user, $password ) { |
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$result = $this->plugin->hardening->captcha_check(); |
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|
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if ( ! $result['response'] ) { |
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if ( $result['reason'] === 'ERROR_NO_KEYS' ) { |
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return $user; |
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} |
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$error_message = sprintf( '<strong>%s</strong>: %s', 'Error', __( 'You have entered an incorrect reCAPTCHA value.', 'patchstack' ) ); |
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|
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if ( $result['reason'] === 'VERIFICATION_FAILED' || $result['reason'] === 'RECAPTCHA_EMPTY_RESPONSE' ) { |
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wp_clear_auth_cookie(); |
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return new WP_Error( 'patchstack_error', $error_message ); |
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} |
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|
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if ( isset( $_REQUEST['log'], $_REQUEST['pwd'] ) ) { |
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return new WP_Error( 'patchstack_error', $error_message ); |
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} |
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} else { |
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return $user; |
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} |
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} |
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|
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/** |
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* Captcha check for the register or lost password form. |
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* |
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* @param mixed|WP_Error $error |
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* @return WP_Error |
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*/ |
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public function general_captcha_check( $error ) { |
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$result = $this->plugin->hardening->captcha_check(); |
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|
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if ( $result['response'] || $result['reason'] == 'ERROR_NO_KEYS' ) { |
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return $error; |
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} |
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|
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if ( ! is_wp_error( $error ) ) { |
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$error = new WP_Error(); |
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} |
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|
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$error->add( 'patchstack_error', 'ERROR' . ': ' . __( 'You have entered an incorrect reCAPTCHA value. Refresh this page and try again.', 'patchstack' ) ); |
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return $error; |
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} |
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} |
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|
