Add SSL test

package.json

@@ -19,6 +19,7 @@
     "htmlparser2": "^7.1.2",
     "lint": "^0.7.0",
     "node-fetch": "^2.6.0",
+    "ssl-checker": "^2.0.7",
     "uglify-js": "^3.6.1",
     "xml2js": "^0.4.22"
   },

src/security/SSL.ts

@@ -0,0 +1,37 @@
+import sslChecker from 'ssl-checker';
+import Test, { TestParameters, Result } from '../Test';
+import logger from '../logger';
+
+class SSL extends Test {
+  public name = 'SSL';
+
+  public async test({ url }: TestParameters): Promise<Result> {
+    logger.info('Starting SSL test...');
+    const hostname = (new URL(url)).hostname;
+    const sslDetails = await sslChecker(hostname);
+
+    if (!sslDetails.valid) {
+      return {
+        status: 'ERROR',
+        title: this.name,
+        description: 'SSL certificate is not valid!',
+      };
+    }
+
+    if (sslDetails.daysRemaining <= 7) {
+      return {
+        status: 'WARNING',
+        title: this.name,
+        description: 'SSL certificate is valid for 7 or less days!',
+      };
+    }
+
+    return {
+      status: 'SUCCESS',
+      title: this.name,
+      description: `SSL certificate is valid until ${sslDetails.validTo}.`,
+    };
+  }
+}
+
+export default SSL;

src/security/index.ts

@@ -11,6 +11,7 @@ import Cookies from './Cookies';
 import ReferrerPolicy from './ReferrerPolicy';
 import RobotsTXT from './RobotsTXT';
 import PermissionsPolicy from './PermissionsPolicy';
+import SSL from './SSL';
 
 export default class Security extends Test {
   public name = 'Security';
@@ -30,6 +31,7 @@ export default class Security extends Test {
       new HTTPVersion(),
       new ContentEncoding(),
       new RobotsTXT(),
+      new SSL(),
     ];
   }
 

yarn.lock

@@ -3338,6 +3338,11 @@ sshpk@^1.7.0:
     safer-buffer "^2.0.2"
     tweetnacl "~0.14.0"
 
+ssl-checker@^2.0.7:
+  version "2.0.7"
+  resolved "https://registry.yarnpkg.com/ssl-checker/-/ssl-checker-2.0.7.tgz#031feef44a0b53bd22a29bdad0687f69fb262e9a"
+  integrity sha512-/fc379/SD4Ov5zWM2heUAZIHTijW45tD33BPCXU+FLhP4TGD8LHm5HbMYqvy/Hwzxv3RmXXqxC8ahlv0rKv0MA==
+
 stack-utils@^2.0.3:
   version "2.0.5"
   resolved "https://registry.yarnpkg.com/stack-utils/-/stack-utils-2.0.5.tgz#d25265fca995154659dbbfba3b49254778d2fdd5"