nonce_option_name ) : get_option( $this->nonce_option_name );
if ( empty( $nonce ) ) {
/**
* Generate the nonce value only once to avoid error response
* when retrieving access token.
*/
$nonce = wp_generate_password(40,false,false);
if ( is_multisite() )
update_site_option( $this->nonce_option_name, $nonce );
else
update_option( $this->nonce_option_name, $nonce );
}
return $nonce;
}
/**
* Helper function to validate nonce value.
*
* @param string $nonce
*
* @return bool
*/
function verify_nonce( $nonce ) {
return $nonce == $this->get_nonce_value();
}
function _get_redirect_uri( $provider, $action, $params = array() ) {
$params = wp_parse_args( $params, array(
'action' => $action,
'provider' => $provider,
'wpnonce' => $this->get_nonce_value(),
'redirect' => site_url( '/' ),
) );
return add_query_arg( $params, self::REDIRECT_URI );
}
/**
* Validates request callback from WPMU DEV
*
* @return bool
*/
function validate_callback_request( $provider ) {
$wpnonce = filter_input( INPUT_GET, 'wpnonce', FILTER_SANITIZE_STRING );
$domain = filter_input( INPUT_GET, 'domain', FILTER_VALIDATE_URL );
$provider_input = filter_input( INPUT_GET, 'provider' );
return ! empty( $wpnonce ) && $this->verify_nonce( $wpnonce )
&& self::DOMAIN == $domain && $provider == $provider_input;
}
/**
* Print error page on failed integration.
*
* @param string $message
* @param string $retry_url
* @param string $cancel_url
*/
function wp_die( $message, $retry_url = '', $cancel_url = '' ) {
$html = sprintf( '
', Opt_In::$plugin_url . 'assets/img/hustle.png' );
$html .= sprintf( '%s
', $message );
if ( ! empty( $retry_url ) )
$html .= sprintf( '%s', esc_url( $retry_url ), __( 'Retry', Opt_In::TEXT_DOMAIN ) );
if ( ! empty( $cancel_url ) )
$html .= sprintf( ' %s', esc_url( $cancel_url ), __( 'Cancel', Opt_In::TEXT_DOMAIN ) );
$html = sprintf( '%s
', $html );
wp_die( $html, __( 'Hustle failure notice.', Opt_In::TEXT_DOMAIN ), 403 );
}
}