feat: add more auth providers and cleanup google auth

it's no longer needed to use stunnel ;-)

README.md

@@ -14,6 +14,33 @@ This is a first implementation draft, which is currently only working with a nod
 
 CONTRIBUTIONS WELCOME! If you are willing to help, just open a PR or contact me via bug system or simon.tretter@hokify.com.
 
+## Motivation
+
+### Why not Freeradius?
+
+There are several reasons why I started implementing this radius server in node js. We are using
+freeradius right now, but have several issues which are hard to tackle due to the reason that freeradius
+is a complex software and supports many uses cases. It is also written in C++ and uses threads behind the scene.
+Therefore it's not easy to extend or modify it, or even bring new feature in.
+The idea of this project is to make a super simple node radius server, which is async by default. No complex
+thread handling, no other fancy thing. The basic goal is to make WPA2 authenticiation easy again.
+
+### 802.11x protocol in node
+
+Another motivation is that it is very exciting to see how wireless protocols have evolved, and see
+how a implementation like TTLS works.
+
+### Few alternatives (only non-free ones like Jumpcloud...)
+
+Furthermore there are few alternatives out there, e.g. jumpcloud is non-free and I couldn't find many others.
+
+### Vision
+
+As soon as I understood the TTLS PAP Tunnel approach, I had this vision of making Wlan Authentification easy
+for everyone. Why limit it to something "complex" like LDAP and co. This library aims to make it easy for everyone
+to implement either their own authentication mechanismus (e.g. against a database), or provides some mechansimns
+out of the box (e.g. imap, static, ldap,..).
+
 ## Installation
 
     npm install
@@ -28,7 +55,7 @@ you need:
 2.  Optional: Create your own SSL certificate (e.g. self signed via npm run create-certificate)
 3.  Check config.js and adapt to your needs
 
-- configure authentication (passport config), e.g. for LDAP
+- configure authentication e.g. for LDAP
 
 ```js
 var config = {
@@ -46,15 +73,86 @@ var config = {
 4.  Install und build server: npm install && npm run build
 5.  Start server "npm run start"
 
-## Authentications
+## Configuration
+
+see config.js in root
+
+
+
+### Authentications
+
+#### Google LDAP
+
+google ldap optimized authenticiation implementaiton
 
-right now only one simple ldap implementation is done,
-the idea is though to use [passport.js](http://www.passportjs.org/) as authentication provider,
-therefore it would be possible to use the radius server with your email provider authentication or any
-other auth mechanismus you use (well everything with no 2factor or anything else that requries an extra step).
+#### LDAP
+
+ldap authentication
+
+```typescript
+interface ILDAPAuthOptions {
+	/** ldap url
+	 * e.g. ldaps://ldap.google.com
+	 */
+	url: string;
+	/** base DN
+	 *  e.g. 'dc=hokify,dc=com', */
+	base: string;
+	/** tls options
+	 * e.g. {
+			key: fs.readFileSync('ldap.gsuite.hokify.com.40567.key'),
+			cert: fs.readFileSync('ldap.gsuite.hokify.com.40567.crt'),
+			servername: 'ldap.google.com'
+		} */
+	tlsOptions?: any;
+	/**
+	 * searchFilter
+	 */
+	searchFilter?: string;
+}
+```
+
+#### IMAP
+
+imap authenticiation
+
+```typescript
+interface IIMAPAuthOptions {
+	host: string;
+	port?: number;
+	useSecureTransport?: boolean;
+	validHosts?: string[];
+}
+```
+
+#### SMTP
+
+smtp authenticiation
+
+```typescript
+interface ISMTPAuthOptions {
+	host: string;
+	port?: number;
+	useSecureTransport?: boolean;
+	validHosts?: string[];
+}
+```
+
+#### Static Auth
+
+static authenticiation
+
+```typescript
+interface IStaticAuthOtions {
+	validCrentials: {
+		username: string;
+		password: string;
+	}[];
+}
+```
 
 ## Usage
 
-You need to specify at least a radius password and the base DN for LDAP:
+Ensure you have installed latest node version and run:
 
     npm run start

__tests__/auth/google-ldap.test.ts

+import 'mocha';
+import { expect } from 'chai';
+import * as fs from 'fs';
+import { GoogleLDAPAuth } from '../../src/auth/GoogleLDAPAuth';
+
+describe('test google ldap auth', function() {
+	this.timeout(10000);
+	it('authenticate against ldap server', async () => {
+		const auth = new GoogleLDAPAuth({
+			base: 'dc=hokify,dc=com',
+			tlsOptions: {
+				key: fs.readFileSync('./ldap.gsuite.hokify.com.40567.key'),
+				cert: fs.readFileSync('./ldap.gsuite.hokify.com.40567.crt')
+			}
+		});
+
+		const result = await auth.authenticate('username', 'password');
+
+		expect(result).to.equal(true);
+	});
+});

__tests__/auth/imap.test.ts

+import 'mocha';
+import { expect } from 'chai';
+import { IMAPAuth } from '../../src/auth/IMAPAuth';
+
+describe('test imap auth', () => {
+	it('authenticate against imap server', async () => {
+		const auth = new IMAPAuth({
+			host: 'imap.gmail.com',
+			port: 993,
+			useSecureTransport: true,
+			validHosts: ['gmail.com']
+		});
+
+		const result = await auth.authenticate('username', 'password');
+
+		expect(result).to.equal(true);
+	});
+});

__tests__/auth/ldap.test.ts

+import 'mocha';
+import { expect } from 'chai';
+import * as fs from 'fs';
+import { LDAPAuth } from '../../src/auth/LDAPAuth';
+
+describe('test ldap auth', function() {
+	this.timeout(10000);
+	it('authenticate against ldap server', async () => {
+		const auth = new LDAPAuth({
+			url: 'ldaps://ldap.google.com:636',
+			base: 'dc=hokify,dc=com',
+			tlsOptions: {
+				servername: 'ldap.google.com',
+				key: fs.readFileSync('./ldap.gsuite.hokify.com.40567.key'),
+				cert: fs.readFileSync('./ldap.gsuite.hokify.com.40567.crt'),
+			}
+		});
+
+		const result = await auth.authenticate('username', 'password');
+
+		expect(result).to.equal(true);
+	});
+});

__tests__/auth/smtp.test.ts

+import 'mocha';
+import { expect } from 'chai';
+import { SMTPAuth } from '../../src/auth/SMTPAuth';
+
+describe('test smtp auth', () => {
+	it('authenticate against smtp server', async () => {
+		const auth = new SMTPAuth({
+			host: 'smtp.gmail.com',
+			port: 465,
+			useSecureTransport: true,
+			validHosts: ['gmail.com']
+		});
+
+		const result = await auth.authenticate('username', 'password');
+
+		expect(result).to.equal(true);
+	});
+});

__tests__/tsconfig.json

+{
+  "extends": "../tsconfig.json",
+  "compilerOptions": {
+
+  },
+  "include": ["__tests__/*.ts", "*.ts", "../src/**/*.ts"]
+}

config.js

@@ -19,20 +19,46 @@ module.exports = {
 		]
 	},
 
-	// authentication
-	authentication: 'ldap',
+	// GoogleLDAPAuth (optimized for google auth)
+	authentication: 'GoogleLDAPAuth',
 	authenticationOptions: {
-		url: 'ldap://127.0.0.1:1636',
 		base: 'dc=hokify,dc=com',
-		tlsOptions2: {
+		tlsOptions: {
 			key: fs.readFileSync('ldap.gsuite.hokify.com.40567.key'),
-			cert: fs.readFileSync('ldap.gsuite.hokify.com.40567.crt'),
+			cert: fs.readFileSync('ldap.gsuite.hokify.com.40567.crt')
+		}
+	}
 
-			// This is necessary only if using the client certificate authentication.
-			requestCert: true,
+	/** LDAP AUTH 
+	authentication: 'LDAPAuth',
+	authenticationOptions: {
+		url: 'ldaps://ldap.google.com',
+		base: 'dc=hokify,dc=com',
+		tlsOptions: {
+			key: fs.readFileSync('ldap.gsuite.hokify.com.40567.key'),
+			cert: fs.readFileSync('ldap.gsuite.hokify.com.40567.crt'),
+			servername: 'ldap.google.com'
+		}
+	}
+	*/
 
-			// This is necessary only if the client uses the self-signed certificate.
-			ca: [fs.readFileSync('ldap.gsuite.hokify.com.40567.key')]
+	/** IMAP AUTH 
+	authentication: 'IMAPAuth',
+	authenticationOptions: {
+		host: 'imap.gmail.com',
+		port: 993,
+		useSecureTransport: true,
+		validHosts: ['hokify.com']
 	}
+	 */
+
+	/** SMTP AUTH 
+	authentication: 'IMAPAuth',
+	authenticationOptions: {
+		host: 'smtp.gmail.com',
+		port: 465,
+		useSecureTransport: true,
+		validHosts: ['gmail.com']
 	}
+	 */
 };

package-lock.json

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@@ -173,11 +136,6 @@
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+      "integrity": "sha1-PbR29bH4azc7ebnPeuOzBdyfH6Q=",
+      "requires": {
+        "promised-timeout": "0.2.x",
+        "smtp-channel": "0.2.2"
+      }
+    },
     "source-map": {
       "version": "0.6.1",
       "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
@@ -3641,6 +4125,15 @@
       "integrity": "sha1-fSKbH8xjfkZsoIEYCDanqr/4P0M=",
       "dev": true
     },
+    "to-regex-range": {
+      "version": "5.0.1",
+      "resolved": "https://registry.npmjs.org/to-regex-range/-/to-regex-range-5.0.1.tgz",
+      "integrity": "sha512-65P7iz6X5yEr1cwcgvQxbbIw7Uk3gOy5dIdtZ4rDveLqhrdJP+Li/Hx6tyK0NEb+2GCyneCMJiGqrADCSNk8sQ==",
+      "dev": true,
+      "requires": {
+        "is-number": "^7.0.0"
+      }
+    },
     "ts-node": {
       "version": "8.6.2",
       "resolved": "https://registry.npmjs.org/ts-node/-/ts-node-8.6.2.tgz",
@@ -3707,6 +4200,12 @@
         "prelude-ls": "~1.1.2"
       }
     },
+    "type-detect": {
+      "version": "4.0.8",
+      "resolved": "https://registry.npmjs.org/type-detect/-/type-detect-4.0.8.tgz",
+      "integrity": "sha512-0fr/mIH1dlO+x7TlcMy+bIDqKPsw/70tVyeHW787goQjhmqaZe10uwLujubK9q9Lg6Fiho1KUKDYz0Z7k7g5/g==",
+      "dev": true
+    },
     "type-fest": {
       "version": "0.8.1",
       "resolved": "https://registry.npmjs.org/type-fest/-/type-fest-0.8.1.tgz",
@@ -3760,6 +4259,26 @@
         }
       }
     },
+    "utf7": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/utf7/-/utf7-1.0.2.tgz",
+      "integrity": "sha1-lV9JCq5lO6IguUVqCod2wZk2CZE=",
+      "requires": {
+        "semver": "~5.3.0"
+      },
+      "dependencies": {
+        "semver": {
+          "version": "5.3.0",
+          "resolved": "https://registry.npmjs.org/semver/-/semver-5.3.0.tgz",
+          "integrity": "sha1-myzl094C0XxgEq0yaqa00M9U+U8="
+        }
+      }
+    },
+    "utf8": {
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/utf8/-/utf8-2.1.2.tgz",
+      "integrity": "sha1-H6DZJw6b6FDZsFAn9jUZv0ZFfZY="
+    },
     "util": {
       "version": "0.11.1",
       "resolved": "https://registry.npmjs.org/util/-/util-0.11.1.tgz",
@@ -3783,6 +4302,11 @@
       "integrity": "sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8=",
       "dev": true
     },
+    "uuencode": {
+      "version": "0.0.4",
+      "resolved": "https://registry.npmjs.org/uuencode/-/uuencode-0.0.4.tgz",
+      "integrity": "sha1-yNUDcIhWY4eThas34zPH6OOwIYw="
+    },
     "v8-compile-cache": {
       "version": "2.1.0",
       "resolved": "https://registry.npmjs.org/v8-compile-cache/-/v8-compile-cache-2.1.0.tgz",
@@ -3847,6 +4371,48 @@
       "resolved": "https://registry.npmjs.org/which-module/-/which-module-2.0.0.tgz",
       "integrity": "sha1-2e8H3Od7mQK4o6j6SzHD4/fm6Ho="
     },
+    "wide-align": {
+      "version": "1.1.3",
+      "resolved": "https://registry.npmjs.org/wide-align/-/wide-align-1.1.3.tgz",
+      "integrity": "sha512-QGkOQc8XL6Bt5PwnsExKBPuMKBxnGxWWW3fU55Xt4feHozMUhdUMaBCk290qpm/wG5u/RSKzwdAC4i51YigihA==",
+      "dev": true,
+      "requires": {
+        "string-width": "^1.0.2 || 2"
+      },
+      "dependencies": {
+        "ansi-regex": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-3.0.0.tgz",
+          "integrity": "sha1-7QMXwyIGT3lGbAKWa922Bas32Zg=",
+          "dev": true
+        },
+        "is-fullwidth-code-point": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-2.0.0.tgz",
+          "integrity": "sha1-o7MKXE8ZkYMWeqq5O+764937ZU8=",
+          "dev": true
+        },
+        "string-width": {
+          "version": "2.1.1",
+          "resolved": "https://registry.npmjs.org/string-width/-/string-width-2.1.1.tgz",
+          "integrity": "sha512-nOqH59deCq9SRHlxq1Aw85Jnt4w6KvLKqWVik6oA9ZklXLNIOlqg4F2yrT1MVaTjAqvVwdfeZ7w7aCvJD7ugkw==",
+          "dev": true,
+          "requires": {
+            "is-fullwidth-code-point": "^2.0.0",
+            "strip-ansi": "^4.0.0"
+          }
+        },
+        "strip-ansi": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-4.0.0.tgz",
+          "integrity": "sha1-qEeQIusaw2iocTibY1JixQXuNo8=",
+          "dev": true,
+          "requires": {
+            "ansi-regex": "^3.0.0"
+          }
+        }
+      }
+    },
     "word-wrap": {
       "version": "1.2.3",
       "resolved": "https://registry.npmjs.org/word-wrap/-/word-wrap-1.2.3.tgz",
@@ -3920,6 +4486,165 @@
         "decamelize": "^1.2.0"
       }
     },
+    "yargs-unparser": {
+      "version": "1.6.0",
+      "resolved": "https://registry.npmjs.org/yargs-unparser/-/yargs-unparser-1.6.0.tgz",
+      "integrity": "sha512-W9tKgmSn0DpSatfri0nx52Joq5hVXgeLiqR/5G0sZNDoLZFOr/xjBUDcShCOGNsBnEMNo1KAMBkTej1Hm62HTw==",
+      "dev": true,
+      "requires": {
+        "flat": "^4.1.0",
+        "lodash": "^4.17.15",
+        "yargs": "^13.3.0"
+      },
+      "dependencies": {
+        "ansi-regex": {
+          "version": "4.1.0",
+          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-4.1.0.tgz",
+          "integrity": "sha512-1apePfXM1UOSqw0o9IiFAovVz9M5S1Dg+4TrDwfMewQ6p/rmMueb7tWZjQ1rx4Loy1ArBggoqGpfqqdI4rondg==",
+          "dev": true
+        },
+        "ansi-styles": {
+          "version": "3.2.1",
+          "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-3.2.1.tgz",
+          "integrity": "sha512-VT0ZI6kZRdTh8YyJw3SMbYm/u+NqfsAxEpWO0Pf9sq8/e94WxxOpPKx9FR1FlyCtOVDNOQ+8ntlqFxiRc+r5qA==",
+          "dev": true,
+          "requires": {
+            "color-convert": "^1.9.0"
+          }
+        },
+        "cliui": {
+          "version": "5.0.0",
+          "resolved": "https://registry.npmjs.org/cliui/-/cliui-5.0.0.tgz",
+          "integrity": "sha512-PYeGSEmmHM6zvoef2w8TPzlrnNpXIjTipYK780YswmIP9vjxmd6Y2a3CB2Ks6/AU8NHjZugXvo8w3oWM2qnwXA==",
+          "dev": true,
+          "requires": {
+            "string-width": "^3.1.0",
+            "strip-ansi": "^5.2.0",
+            "wrap-ansi": "^5.1.0"
+          }
+        },
+        "color-convert": {
+          "version": "1.9.3",
+          "resolved": "https://registry.npmjs.org/color-convert/-/color-convert-1.9.3.tgz",
+          "integrity": "sha512-QfAUtd+vFdAtFQcC8CCyYt1fYWxSqAiK2cSD6zDB8N3cpsEBAvRxp9zOGg6G/SHHJYAT88/az/IuDGALsNVbGg==",
+          "dev": true,
+          "requires": {
+            "color-name": "1.1.3"
+          }
+        },
+        "color-name": {
+          "version": "1.1.3",
+          "resolved": "https://registry.npmjs.org/color-name/-/color-name-1.1.3.tgz",
+          "integrity": "sha1-p9BVi9icQveV3UIyj3QIMcpTvCU=",
+          "dev": true
+        },
+        "emoji-regex": {
+          "version": "7.0.3",
+          "resolved": "https://registry.npmjs.org/emoji-regex/-/emoji-regex-7.0.3.tgz",
+          "integrity": "sha512-CwBLREIQ7LvYFB0WyRvwhq5N5qPhc6PMjD6bYggFlI5YyDgl+0vxq5VHbMOFqLg7hfWzmu8T5Z1QofhmTIhItA==",
+          "dev": true
+        },
+        "find-up": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/find-up/-/find-up-3.0.0.tgz",
+          "integrity": "sha512-1yD6RmLI1XBfxugvORwlck6f75tYL+iR0jqwsOrOxMZyGYqUuDhJ0l4AXdO1iX/FTs9cBAMEk1gWSEx1kSbylg==",
+          "dev": true,
+          "requires": {
+            "locate-path": "^3.0.0"
+          }
+        },
+        "is-fullwidth-code-point": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-2.0.0.tgz",
+          "integrity": "sha1-o7MKXE8ZkYMWeqq5O+764937ZU8=",
+          "dev": true
+        },
+        "locate-path": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/locate-path/-/locate-path-3.0.0.tgz",
+          "integrity": "sha512-7AO748wWnIhNqAuaty2ZWHkQHRSNfPVIsPIfwEOWO22AmaoVrWavlOcMR5nzTLNYvp36X220/maaRsrec1G65A==",
+          "dev": true,
+          "requires": {
+            "p-locate": "^3.0.0",
+            "path-exists": "^3.0.0"
+          }
+        },
+        "p-locate": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/p-locate/-/p-locate-3.0.0.tgz",
+          "integrity": "sha512-x+12w/To+4GFfgJhBEpiDcLozRJGegY+Ei7/z0tSLkMmxGZNybVMSfWj9aJn8Z5Fc7dBUNJOOVgPv2H7IwulSQ==",
+          "dev": true,
+          "requires": {
+            "p-limit": "^2.0.0"
+          }
+        },
+        "path-exists": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/path-exists/-/path-exists-3.0.0.tgz",
+          "integrity": "sha1-zg6+ql94yxiSXqfYENe1mwEP1RU=",
+          "dev": true
+        },
+        "string-width": {
+          "version": "3.1.0",
+          "resolved": "https://registry.npmjs.org/string-width/-/string-width-3.1.0.tgz",
+          "integrity": "sha512-vafcv6KjVZKSgz06oM/H6GDBrAtz8vdhQakGjFIvNrHA6y3HCF1CInLy+QLq8dTJPQ1b+KDUqDFctkdRW44e1w==",
+          "dev": true,
+          "requires": {
+            "emoji-regex": "^7.0.1",
+            "is-fullwidth-code-point": "^2.0.0",
+            "strip-ansi": "^5.1.0"
+          }
+        },
+        "strip-ansi": {
+          "version": "5.2.0",
+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-5.2.0.tgz",
+          "integrity": "sha512-DuRs1gKbBqsMKIZlrffwlug8MHkcnpjs5VPmL1PAh+mA30U0DTotfDZ0d2UUsXpPmPmMMJ6W773MaA3J+lbiWA==",
+          "dev": true,
+          "requires": {
+            "ansi-regex": "^4.1.0"
+          }
+        },
+        "wrap-ansi": {
+          "version": "5.1.0",
+          "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-5.1.0.tgz",
+          "integrity": "sha512-QC1/iN/2/RPVJ5jYK8BGttj5z83LmSKmvbvrXPNCLZSEb32KKVDJDl/MOt2N01qU2H/FkzEa9PKto1BqDjtd7Q==",
+          "dev": true,
+          "requires": {
+            "ansi-styles": "^3.2.0",
+            "string-width": "^3.0.0",
+            "strip-ansi": "^5.0.0"
+          }
+        },
+        "yargs": {
+          "version": "13.3.0",
+          "resolved": "https://registry.npmjs.org/yargs/-/yargs-13.3.0.tgz",
+          "integrity": "sha512-2eehun/8ALW8TLoIl7MVaRUrg+yCnenu8B4kBlRxj3GJGDKU1Og7sMXPNm1BYyM1DOJmTZ4YeN/Nwxv+8XJsUA==",
+          "dev": true,
+          "requires": {
+            "cliui": "^5.0.0",
+            "find-up": "^3.0.0",
+            "get-caller-file": "^2.0.1",
+            "require-directory": "^2.1.1",
+            "require-main-filename": "^2.0.0",
+            "set-blocking": "^2.0.0",
+            "string-width": "^3.0.0",
+            "which-module": "^2.0.0",
+            "y18n": "^4.0.0",
+            "yargs-parser": "^13.1.1"
+          }
+        },
+        "yargs-parser": {
+          "version": "13.1.1",
+          "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-13.1.1.tgz",
+          "integrity": "sha512-oVAVsHz6uFrg3XQheFII8ESO2ssAf9luWuAd6Wexsu4F3OtIW0o8IribPXYrD4WC24LWtPrJlGy87y5udK+dxQ==",
+          "dev": true,
+          "requires": {
+            "camelcase": "^5.0.0",
+            "decamelize": "^1.2.0"
+          }
+        }
+      }
+    },
     "yn": {
       "version": "3.1.1",
       "resolved": "https://registry.npmjs.org/yn/-/yn-3.1.1.tgz",

package.json

 {
 	"name": "radius-server",
-	"description": "radius server for google LDAP and TTLT",
+	"description": "radius server for google LDAP and TTLS",
 	"version": "0.0.1",
 	"scripts": {
 		"debug": "DEBUG=radius:* ../node/node dist/app.js",
 		"start": "../node/node dist/app.js",
 		"build": "tsc",
 		"dev": "ts-node src/app.ts",
-		"test-ttls-pap": "tests/eapol_test -c tests/ttls-pap.conf -s testing123",
+		"test": "mocha -r ts-node/register __tests__/**/*.test.ts",
+		"test-ttls-pap": "__tests__/eapol_test -c __tests__/ttls-pap.conf -s testing123",
 		"test-radtest": "radtest -x user pwd localhost 1812 testing123",
 		"create-certificate": "sh ./ssl/create.sh && sh ./ssl/sign.sh"
 	},
 	"dependencies": {
 		"debug": "^4.1.1",
+		"imap-simple": "^4.3.0",
+		"ldapauth-fork": "^4.3.1",
 		"ldapjs": "^1.0.2",
 		"md5": "^2.2.1",
 		"native-duplexpair": "^1.0.0",
 		"node-cache": "^5.1.0",
-		"passport-ldapauth": "^2.1.3",
 		"radius": "~1.1.4",
 		"ts-node": "^8.6.2",
 		"type-cacheable": "^4.0.0",
-		"yargs": "~15.1.0"
+		"yargs": "~15.1.0",
+		"smtp-client": "^0.3.1"
 	},
 	"license": "GPLv3",
 	"devDependencies": {
+		"@hokify/eslint-config": "^0.2.4",
+		"@types/chai": "^4.2.9",
 		"@types/ldapjs": "^1.0.5",
+		"@types/mocha": "^7.0.1",
 		"@types/radius": "0.0.28",
-		"@hokify/eslint-config": "^0.2.4",
+		"chai": "^4.2.0",
 		"eslint": "^6.8.0",
+		"mocha": "^7.0.1",
 		"prettier": "^1.19.1",
 		"typescript": "^3.8.2"
 	}

src/app.ts

-import { GoogleLDAPAuth } from './auth/google-ldap';
 import { UDPServer } from './server/UDPServer';
 import { RadiusService } from './radius/RadiusService';
 
 import * as config from '../config';
+import { Authentication } from './auth';
+import { IAuthentication } from './types/Authentication';
 
 console.log(`Listener Port: ${config.port || 1812}`);
 console.log(`RADIUS Secret: ${config.secret}`);
 console.log(`Auth Mode: ${config.authentication}`);
 
-// const ldap = new LDAPAuth({url: 'ldap://ldap.google.com', base: 'dc=hokify,dc=com', uid: 'uid', tlsOptions});
-
-const ldap = new GoogleLDAPAuth(
-	config.authenticationOptions.url,
-	config.authenticationOptions.base
-);
+(async () => {
+	/* configure auth mechansim */
+	let auth: IAuthentication;
+	try {
+		const AuthMechanismus = (await import(`./auth/${config.authentication}`))[
+			config.authentication
+		];
+		auth = new AuthMechanismus(config.authenticationOptions);
+	} catch (err) {
+		console.error('cannot load auth mechanismus', config.authentication);
+		throw err;
+	}
+	// start radius server
+	const authentication = new Authentication(auth);
 
-const server = new UDPServer(config.port);
-const radiusService = new RadiusService(config.secret, ldap);
+	const server = new UDPServer(config.port);
+	const radiusService = new RadiusService(config.secret, authentication);
 
-(async () => {
 	server.on('message', async (msg, rinfo) => {
 		const response = await radiusService.handleMessage(msg);
 

src/auth.ts

+import * as NodeCache from 'node-cache';
+import { IAuthentication } from './types/Authentication';
+
+/**
+ * this is just a simple abstraction to provide
+ * an application layer for caching credentials
+ */
+export class Authentication implements IAuthentication {
+	cache = new NodeCache();
+
+	constructor(private authenticator: IAuthentication) {}
+
+	async authenticate(username: string, password: string): Promise<boolean> {
+		const cacheKey = `usr:${username}|pwd:${password}`;
+		const fromCache = this.cache.get(cacheKey) as undefined | boolean;
+		if (fromCache !== undefined) {
+			return fromCache;
+		}
+
+		const authResult = await this.authenticator.authenticate(username, password);
+		this.cache.set(cacheKey, authResult, 86400); // cache for one day
+
+		return authResult;
+	}
+}

src/auth/google-ldap.ts → src/auth/GoogleLDAPAuth.ts

-import * as NodeCache from 'node-cache';
-
 import { Client, createClient } from 'ldapjs';
 import debug from 'debug';
+import * as tls from 'tls';
 import { IAuthentication } from '../types/Authentication';
 
 const usernameFields = ['posixUid', 'mail'];
 
-const log = debug('radius:auth:ldap');
+const log = debug('radius:auth:google-ldap');
 // TLS:
 // https://github.com/ldapjs/node-ldapjs/issues/307
 
+interface IGoogleLDAPAuthOptions {
+	/** base DN
+	 *  e.g. 'dc=hokify,dc=com', */
+	base: string;
+	/** tls options
+	 * e.g. {
+			key: fs.readFileSync('ldap.gsuite.hokify.com.40567.key'),
+			cert: fs.readFileSync('ldap.gsuite.hokify.com.40567.crt')
+		} */
+	tlsOptions: tls.TlsOptions;
+}
+
 export class GoogleLDAPAuth implements IAuthentication {
-	cache = new NodeCache();
+	private ldap: Client;
+
+	private lastDNsFetch: Date;
 
-	ldap: Client;
+	private allValidDNsCache: { [key: string]: string };
 
-	lastDNsFetch: Date;
+	private base: string;
 
-	allValidDNsCache: { [key: string]: string };
+	constructor(config: IGoogleLDAPAuthOptions) {
+		this.base = config.base;
 
-	constructor(private url: string, private base: string, tlsOptions?) {
-		this.ldap = createClient({ url, tlsOptions }).on('error', error => {
+		this.ldap = createClient({
+			url: 'ldaps://ldap.google.com:636',
+			tlsOptions: {
+				...config.tlsOptions,
+				servername: 'ldap.google.com'
+			}
+		}).on('error', error => {
 			console.error('Error in ldap', error);
 		});
 
@@ -74,12 +93,6 @@ export class GoogleLDAPAuth implements IAuthentication {
 	}
 
 	async authenticate(username: string, password: string, count = 0, forceFetching = false) {
-		const cacheKey = `usr:${username}|pwd:${password}`;
-		const fromCache = this.cache.get(cacheKey);
-		if (fromCache !== undefined) {
-			return fromCache;
-		}
-
 		const cacheValidTime = new Date();
 		cacheValidTime.setHours(cacheValidTime.getHours() - 12);
 
@@ -100,14 +113,14 @@ export class GoogleLDAPAuth implements IAuthentication {
 			if (!dnsFetched && !forceFetching) {
 				return this.authenticate(username, password, count, true);
 			}
-			console.error(`invalid username, not found in DN: ${username}`);
+			console.error(`invalid username, not found in DN: ${username}`, this.allValidDNsCache);
 			return false;
 		}
 
 		const authResult: boolean = await new Promise((resolve, reject) => {
 			this.ldap.bind(dn, password, (err, res) => {
 				if (err) {
-					if (err && (err as any).stack && (err as any).stack.includes(`${this.url} closed`)) {
+					if (err && (err as any).stack && (err as any).stack.includes(`ldap.google.com closed`)) {
 						count++;
 						// wait 1 second to give the ldap error handler time to reconnect
 						setTimeout(() => resolve(this.authenticate(dn, password)), 2000);
@@ -123,8 +136,6 @@ export class GoogleLDAPAuth implements IAuthentication {
 			});
 		});
 
-		this.cache.set(cacheKey, authResult, 86400);
-
-		return authResult;
+		return !!authResult;
 	}
 }

src/auth/IMAPAuth.ts

+import * as imaps from 'imap-simple';
+import { IAuthentication } from '../types/Authentication';
+
+interface IIMAPAuthOptions {
+	host: string;
+	port?: number;
+	useSecureTransport?: boolean;
+	validHosts?: string[];
+}
+
+export class IMAPAuth implements IAuthentication {
+	private host: string;
+
+	private port = 143;
+
+	private useSecureTransport = false;
+
+	private validHosts?: string[];
+
+	constructor(config: IIMAPAuthOptions) {
+		this.host = config.host;
+		if (config.port !== undefined) {
+			this.port = config.port;
+		}
+		if (config.useSecureTransport !== undefined) {
+			this.useSecureTransport = config.useSecureTransport;
+		}
+		if (config.validHosts !== undefined) {
+			this.validHosts = config.validHosts;
+		}
+	}
+
+	async authenticate(username: string, password: string) {
+		if (this.validHosts) {
+			const domain = username.split('@').pop();
+			if (!domain || !this.validHosts.includes(domain)) {
+				console.info('invalid or no domain in username', username, domain);
+				return false;
+			}
+		}
+		let success = false;
+		try {
+			const connection = await imaps.connect({
+				imap: {
+					host: this.host,
+					port: this.port,
+					tls: this.useSecureTransport,
+					user: username,
+					password,
+					tlsOptions: {
+						servername: this.host // SNI (needs to be set for gmail)
+					}
+				}
+			});
+
+			success = true;
+
+			connection.end();
+		} catch (err) {
+			console.error('imap auth failed', err);
+		}
+		return success;
+	}
+}

src/auth/LDAPAuth.ts

+import * as LdapAuth from 'ldapauth-fork';
+import { IAuthentication } from '../types/Authentication';
+
+interface ILDAPAuthOptions {
+	/** ldap url
+	 * e.g. ldaps://ldap.google.com
+	 */
+	url: string;
+	/** base DN
+	 *  e.g. 'dc=hokify,dc=com', */
+	base: string;
+	/** tls options
+	 * e.g. {
+			key: fs.readFileSync('ldap.gsuite.hokify.com.40567.key'),
+			cert: fs.readFileSync('ldap.gsuite.hokify.com.40567.crt'),
+			servername: 'ldap.google.com'
+		} */
+	tlsOptions?: any;
+	/**
+	 * searchFilter
+	 */
+	searchFilter?: string;
+}
+
+export class LDAPAuth implements IAuthentication {
+	private ldap: LdapAuth;
+
+	constructor(options: ILDAPAuthOptions) {
+		this.ldap = new LdapAuth({
+			url: options.url,
+			searchBase: options.base,
+			tlsOptions: options.tlsOptions,
+			searchFilter: options.searchFilter || '(uid={{username}})',
+			reconnect: true
+		});
+		this.ldap.on('error', function(err) {
+			console.error('LdapAuth: ', err);
+		});
+	}
+
+	async authenticate(username: string, password: string) {
+		// console.log('AUTH', this.ldap);
+		const authResult: boolean = await new Promise((resolve, reject) => {
+			this.ldap.authenticate(username, password, function(err, user) {
+				if (err) {
+					resolve(false);
+					console.error('ldap error', err);
+					// reject(err);
+				}
+				if (user) resolve(user);
+				else reject();
+			});
+		});
+
+		return !!authResult;
+	}
+}

src/auth/SMTPAuth.ts

+import { SMTPClient } from 'smtp-client';
+import { IAuthentication } from '../types/Authentication';
+
+interface ISMTPAuthOptions {
+	host: string;
+	port?: number;
+	useSecureTransport?: boolean;
+	validHosts?: string[];
+}
+
+export class SMTPAuth implements IAuthentication {
+	private host: string;
+
+	private port = 25;
+
+	private useSecureTransport = false;
+
+	private validHosts?: string[];
+
+	constructor(options: ISMTPAuthOptions) {
+		this.host = options.host;
+
+		if (options.port !== undefined) {
+			this.port = options.port;
+		}
+
+		if (options.useSecureTransport !== undefined) {
+			this.useSecureTransport = options.useSecureTransport;
+		}
+
+		if (options.validHosts !== undefined) {
+			this.validHosts = options.validHosts;
+		}
+	}
+
+	async authenticate(username: string, password: string) {
+		if (this.validHosts) {
+			const domain = username.split('@').pop();
+			if (!domain || !this.validHosts.includes(domain)) {
+				console.info('invalid or no domain in username', username, domain);
+				return false;
+			}
+		}
+
+		const s = new SMTPClient({
+			host: this.host,
+			port: this.port,
+			secure: this.useSecureTransport,
+			tlsOptions: {
+				servername: this.host // SNI (needs to be set for gmail)
+			}
+		});
+
+		let success = false;
+		try {
+			await s.connect();
+			await s.greet({ hostname: 'mx.domain.com' }); // runs EHLO command or HELO as a fallback
+			await s.authPlain({ username, password }); // authenticates a user
+
+			success = true;
+
+			s.close(); // runs QUIT command
+		} catch (err) {
+			console.error('imap auth failed', err);
+		}
+		return success;
+	}
+}

src/auth/StaticAuth.ts

+import { IAuthentication } from '../types/Authentication';
+
+interface IStaticAuthOtions {
+	validCrentials: {
+		username: string;
+		password: string;
+	}[];
+}
+
+export class StaticAuth implements IAuthentication {
+	private validCredentials: { username: string; password: string }[];
+
+	constructor(options: IStaticAuthOtions) {
+		this.validCredentials = options.validCrentials;
+	}
+
+	async authenticate(username: string, password: string) {
+		return !!this.validCredentials.find(
+			credential => credential.username === username && credential.password === password
+		);
+	}
+}

src/radius/handler/eapMethods/EAPTTLS.ts

+// https://tools.ietf.org/html/rfc5281 TTLS v0
+// https://tools.ietf.org/html/draft-funk-eap-ttls-v1-00 TTLS v1 (not implemented)
+
 /* eslint-disable no-bitwise */
 import * as tls from 'tls';
 import * as NodeCache from 'node-cache';

src/server/UDPServer.ts

@@ -38,7 +38,7 @@ export class UDPServer extends events.EventEmitter implements IServer {
 
 			// retry up to MAX_RETRIES to send this message,
 			// we automatically retry if there is no confirmation (=any incoming message from client)
-			// if expectAcknowledgment (e.g. Access-Accept or Access-Reject) is set, we do not retry
+			// if expectAcknowledgment is false (e.g. Access-Accept or Access-Reject), we do not retry
 			const identifierForRetry = `${address}:${port}`;
 			if (expectAcknowledgment && retried < UDPServer.MAX_RETRIES) {
 				this.timeout[identifierForRetry] = setTimeout(sendResponse, 600 * (retried + 1));

tsconfig.eslint.json

 {
 	"extends": "./tsconfig.json",
-  "include": [
-	"src/**/*.ts",
-	  "*.js"
-  ],
+	"include": ["src/**/*.ts", "*.js", "*.ts", "__tests__/**/*.ts"],
+	"exclude": ["node_modules"],
 	"compilerOptions": {
 		"allowJs": true,
 		"checkJs": true