From ced1bf978893905baff402bf277b0823c826cfc0 Mon Sep 17 00:00:00 2001
From: Alex Holliday <ajhollid@gmail.com>
Date: Wed, 16 Oct 2024 11:44:36 +0800
Subject: [PATCH] Refactor getting certificate to use TLS instead of
 SSL-checker

---
 Server/controllers/controllerUtils.js | 74 +++++++++++++++++++++++----
 1 file changed, 64 insertions(+), 10 deletions(-)

diff --git a/Server/controllers/controllerUtils.js b/Server/controllers/controllerUtils.js
index d59314913..f349fab08 100644
--- a/Server/controllers/controllerUtils.js
+++ b/Server/controllers/controllerUtils.js
@@ -1,16 +1,70 @@
+import sslChecker from "ssl-checker";
+import * as tls from "tls";
+
 const handleValidationError = (error, serviceName) => {
-  error.status = 422;
-  error.service = serviceName;
-  error.message =
-    error.details?.[0]?.message || error.message || "Validation Error";
-  return error;
+	error.status = 422;
+	error.service = serviceName;
+	error.message = error.details?.[0]?.message || error.message || "Validation Error";
+	return error;
 };
 
 const handleError = (error, serviceName, method, status = 500) => {
-  error.status === undefined ? (error.status = status) : null;
-  error.service === undefined ? (error.service = serviceName) : null;
-  error.method === undefined ? (error.method = method) : null;
-  return error;
+	error.status === undefined ? (error.status = status) : null;
+	error.service === undefined ? (error.service = serviceName) : null;
+	error.method === undefined ? (error.method = method) : null;
+	return error;
 };
 
-export { handleValidationError, handleError };
+const fetchMonitorCertificate = async (monitor) => {
+	return new Promise((resolve, reject) => {
+		try {
+			const monitorUrl = new URL(monitor.url);
+			const hostname = monitorUrl.hostname;
+			let socket = tls.connect(
+				{
+					port: 443,
+					host: hostname,
+					servername: hostname, // this is required in case the server enabled SNI
+				},
+				() => {
+					try {
+						let x509Certificate = socket.getPeerX509Certificate();
+						resolve(x509Certificate);
+					} catch (error) {
+						reject(error);
+					} finally {
+						socket.end();
+					}
+				}
+			);
+			socket.on("error", (error) => {
+				console.log(error);
+				reject(
+					new Error(
+						`TLS connection error while fetching certificate from ${error.hostname}`
+					)
+				);
+			});
+		} catch (error) {
+			reject(error);
+		}
+	});
+};
+
+const test = async () => {
+	let host = "httpbin.org";
+	console.log(cert.validTo);
+	let socket = tls.connect(
+		{
+			port: 443,
+			host,
+			servername: host, // this is required in case the server enabled SNI
+		},
+		() => {
+			let x509Certificate = socket.getPeerX509Certificate();
+			console.log(x509Certificate.validTo);
+		}
+	);
+};
+
+export { handleValidationError, handleError, fetchMonitorCertificate, test };