Initial Commit

inc/domain-mapping/class-helper.php

@@ -0,0 +1,179 @@
+<?php
+/**
+ * Helper class for domain mapping functionality.
+ *
+ * @package WP_Ultimo
+ * @subpackage Domain_Mapping
+ * @since 2.0.0
+ */
+
+namespace WP_Ultimo\Domain_Mapping;
+
+use WP_Ultimo\Dependencies\Spatie\SslCertificate\SslCertificate;
+use WP_Ultimo\Dependencies\Psr\Log\LogLevel;
+
+// Exit if accessed directly
+defined('ABSPATH') || exit;
+
+/**
+ * Helper class for domain mapping functionality.
+ *
+ * @since 2.0.0
+ */
+class Helper {
+
+	/**
+	 * List of API endpoints we can use to check the remote IP address.
+	 *
+	 * @var array
+	 */
+	static $providers = array(
+		'https://ipv4.canihazip.com/s',
+		'https://ipv4.icanhazip.com/',
+		'https://api.ipify.org/',
+	);
+
+	/**
+	 * Static-only class.
+	 */
+	private function __construct() {} // end __construct;
+
+	/**
+	 * Checks if we are in development mode.
+	 *
+	 * @todo this needs to be migrate somewhere else, where it can be accessed by everyone.
+	 * @since 2.0.0
+	 * @return boolean
+	 */
+	public static function is_development_mode() {
+
+		$site_url = site_url();
+
+		$is_development_mode = preg_match('#(localhost|staging.*\.|\.local|\.test)#', $site_url);
+
+		/**
+		 * Allow plugin developers to add additional tests
+		 * for development mode.
+		 *
+		 * @since 2.0.0
+		 *
+		 * @param bool   $is_development_mode The current development status.
+		 * @param string $site_url The site URL.
+		 * @return bool
+		 */
+		return apply_filters('wu_is_development_mode', $is_development_mode, $site_url);
+
+	} // end is_development_mode;
+ /**
+  * Gets the local IP address of the network.
+  *
+  * Sometimes, this will be the same address as the public one, but we need different methods.
+  *
+  * @since 2.0.0
+  * @return string|bool
+  */
+ public static function get_local_network_ip() {
+
+		return isset($_SERVER['SERVER_ADDR']) ? $_SERVER['SERVER_ADDR'] : false;
+
+	} // end get_local_network_ip;
+
+	/**
+	 * Gets the public IP address of the network using an external HTTP call.
+	 *
+	 * The reason why this IP can't be determined locally is because proxies like
+	 * Cloudflare and others will mask the real domain address.
+	 * By default, we cache the values in a transient for 10 days.
+	 *
+	 * @since 2.0.0
+	 * @return string
+	 */
+	public static function get_network_public_ip() {
+
+		if (self::is_development_mode()) {
+
+			$local_ip = self::get_local_network_ip();
+
+			/**
+			 * See more about this filter below, on this same method.
+			 */
+			return apply_filters('wu_get_network_public_ip', $local_ip, true);
+
+		} // end if;
+
+		$_ip_address = get_site_transient('wu_public_network_ip');
+
+		if (!$_ip_address) {
+
+			$ip_address = false;
+
+			foreach (self::$providers as $provider_url) {
+
+				$response = wp_remote_get($provider_url, array(
+					'timeout' => 5,
+				));
+
+				if (!is_wp_error($response)) {
+
+					$ip_address = trim(wp_remote_retrieve_body($response));
+
+					continue;
+
+				} // end if;
+
+			} // end foreach;
+
+			set_site_transient('wu_public_network_ip', $ip_address, 10 * DAY_IN_SECONDS);
+
+			$_ip_address = $ip_address;
+
+		} // end if;
+
+		/**
+		 * Allow developers to change the public IP address of the network.
+		 *
+		 * This is displayed to the customer/users when new domains are mapped
+		 * and need DNS records configured.
+		 *
+		 * This is useful in cases where a load balancer might be present and IP might vary.
+		 *
+		 * @see https://wpultimo.feedbear.com/boards/bug-reports/posts/network-ip-filter-required
+		 *
+		 * @param string $_ip_address The public IP address.
+		 * @param bool $local True if this is a local network (localhost, .dev, etc.), false otherwise.
+		 * @return string The new IP address.
+		 */
+		return apply_filters('wu_get_network_public_ip', $_ip_address, false);
+
+	} // end get_network_public_ip;
+
+	/**
+	 * Checks if a given domain name has a valid associated SSL certificate.
+	 *
+	 * @since 2.0.0
+	 *
+	 * @param string $domain Domain name, e.g. google.com.
+	 * @return boolean
+	 */
+	public static function has_valid_ssl_certificate($domain = '') {
+
+		$is_valid = false;
+
+		try {
+
+			$certificate = SslCertificate::createForHostName($domain);
+
+			$is_valid = $certificate->isValid($domain); // returns bool;
+
+		} catch (\Exception $e) {
+
+			// translators: %s is the error message returned by the checker.
+			wu_log_add('domain-ssl-checks', sprintf(__('Certificate Invalid: %s', 'wp-ultimo'), $e->getMessage()), LogLevel::ERROR);
+
+		} // end try;
+
+		return $is_valid;
+
+	} // end has_valid_ssl_certificate;
+
+} // end class Helper;