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<?php
namespace WPForms\Integrations\LiteConnect;
use WPForms\Integrations\IntegrationInterface;
/**
* Class LiteConnect.
*
* @since 1.7.4
*/
abstract class LiteConnect implements IntegrationInterface {
/**
* The slug that will be used to save the option of Lite Connect.
*
* @since 1.7.4
*
* @var string
*/
const SETTINGS_SLUG = 'lite-connect-enabled';
/**
* The $_GET argument to trigger the auth key endpoint.
*
* @since 1.7.4.1
*
* @var string
*/
const AUTH_KEY_ARG = 'wpforms-liteconnect-auth-key';
/**
* Indicate if current integration is allowed to load.
*
* @since 1.7.4
*
* @return bool
*/
public function allow_load() {
return self::is_allowed();
}
/**
* Whether Lite Connect is allowed.
*
* @since 1.7.4
*
* @return bool
*/
public static function is_allowed() {
// Disable Lite Connect integration for local hosts.
$allowed = ! self::is_local_not_debug();
// phpcs:disable WPForms.PHP.ValidateHooks.InvalidHookName
/**
* Determine whether Lite Connect integration is allowed to load.
*
* @since 1.7.4
*
* @param bool $is_allowed Is LiteConnect allowed? Value by default: true.
*/
return (bool) apply_filters( 'wpforms_integrations_lite_connect_is_allowed', $allowed );
// phpcs:enable WPForms.PHP.ValidateHooks.InvalidHookName
}
/**
* Whether Lite Connect is enabled.
*
* @since 1.7.4
*
* @return bool
*/
public static function is_enabled() {
// phpcs:disable WPForms.PHP.ValidateHooks.InvalidHookName
/**
* Determine whether LiteConnect is enabled on the WPForms > Settings admin page.
*
* @since 1.7.4
*
* @param bool $is_enabled Is LiteConnect enabled on WPForms > Settings page?
*/
return (bool) apply_filters( 'wpforms_integrations_lite_connect_is_enabled', wpforms_setting( self::SETTINGS_SLUG ) );
// phpcs:enable WPForms.PHP.ValidateHooks.InvalidHookName
}
/**
* Load an integration.
*
* @since 1.7.4
*/
public function load() {
$this->endpoints();
}
/**
* Whether Lite Connect is running locally and not in the debug mode.
*
* @since 1.7.4
*
* @return bool
*/
private static function is_local_not_debug() {
return ( ! defined( 'WPFORMS_DEBUG_LITE_CONNECT' ) ) && self::is_localhost();
}
/**
* Whether Lite Connect is running locally.
*
* @since 1.7.4
*
* @return bool
*/
private static function is_localhost() {
// Check for local IPs.
$ip = wpforms_get_ip();
if ( ! filter_var( $ip, FILTER_VALIDATE_IP, FILTER_FLAG_NO_PRIV_RANGE | FILTER_FLAG_NO_RES_RANGE ) ) {
return true;
}
// Check for local TLDs.
if ( ! empty( $_SERVER['HTTP_HOST'] ) ) {
$host = sanitize_text_field( wp_unslash( $_SERVER['HTTP_HOST'] ) );
$local_tlds = [
'.local',
'.invalid',
'.example',
'.test',
];
foreach ( $local_tlds as $tld ) {
if ( preg_match( '/' . $tld . '$/', $host ) ) {
return true;
}
}
}
// Return false if IP and TLD are not local.
return false;
}
/**
* Provide responses to endpoint requests.
*
* @since 1.7.4
*/
private function endpoints() {
// We check nonce in the endpoint_key().
// phpcs:ignore WordPress.Security.NonceVerification.Recommended
if ( ! isset( $_GET[ self::AUTH_KEY_ARG ] ) ) {
return;
}
$this->endpoint_key();
}
/**
* Process endpoint for callback on generate_site_key().
*
* @since 1.7.4
*/
private function endpoint_key() {
$json = file_get_contents( 'php://input' );
$response = json_decode( $json, true );
if ( ! $response ) {
$this->endpoint_die( 'Lite Connect: No response' );
}
if ( isset( $response['error'] ) ) {
$this->endpoint_die(
'Lite Connect: unable to add the site to system',
$response
);
}
if ( ! isset( $response['key'], $response['id'], $response['nonce'] ) ) {
$this->endpoint_die(
'Lite Connect: unknown communication error',
$response
);
}
if ( ! wp_verify_nonce( $response['nonce'], API::KEY_NONCE_ACTION ) ) {
$this->endpoint_die(
'Lite Connect: nonce verification failed',
$response
);
}
unset( $response['nonce'] );
$settings = get_option( Integration::get_option_name(), [] );
$settings['site'] = $response;
update_option( Integration::get_option_name(), $settings );
exit();
}
/**
* Finish the endpoint execution with wp_die().
*
* @since 1.7.4
*
* @param string $title Log message title.
* @param array $response Response.
*
* @noinspection ForgottenDebugOutputInspection
*/
private function endpoint_die( $title = '', $response = [] ) { // phpcs:ignore WPForms.PHP.HooksMethod.InvalidPlaceForAddingHooks
$this->log( $title, $response );
// We call wp_die too early, before the query is run.
// So, we should remove some filters to avoid having PHP notices in error log.
remove_filter( 'wp_robots', 'wp_robots_noindex_embeds' );
remove_filter( 'wp_robots', 'wp_robots_noindex_search' );
wp_die(
esc_html__( 'This is the Lite Connect endpoint page.', 'wpforms-lite' ),
'Lite Connect endpoint',
400
);
}
/**
* Log message.
*
* @since 1.7.4
*
* @param string $title Log message title.
* @param array $response Response.
*/
private function log( $title = '', $response = [] ) {
if ( ! $title ) {
return;
}
wpforms_log(
$title,
[
'response' => $response,
'request' => [
'domain' => isset( $response['domain'] ) ? $response['domain'] : '',
'admin_email' => Integration::get_enabled_email(),
],
],
[ 'type' => [ 'error' ] ]
);
}
}