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https://github.com/icapps/tree-house-authentication

Tree House Authentication module
https://github.com/icapps/tree-house-authentication

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Tree House Authentication module

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# Treehouse authentication

Authentication module written in TypeScript providing authentication utilities and JWT methods.

[![npm version](https://badge.fury.io/js/tree-house-authentication.svg)](https://badge.fury.io/js/tree-house-authentication)
![CI](https://github.com/icapps/tree-house-authentication/workflows/Continuous%20Integration/badge.svg?branch=master)

## Installation

Install via npm

```shell
npm install @icapps/tree-house-authentication
```

or via yarn

```shell
yarn add @icapps/tree-house-authentication
```

## Usage

```javascript
const authenticator = require('@icapps/tree-house-authentication')
```

```javascript
import * as authenticator from '@icapps/tree-house-authentication'
```

## JWT

### Configuration

```javascript
const jwtSettings = {
algorithm: 'HS256',
expiresIn: '7d',
audience: 'TREEHOUSE-AUTH',
issuer: 'treehouse-authentication',
secretOrKey: '5kZxE|gZu1ODB183s772)/3:l_#5hU3Gn5O|2ux3&lhN@LQ6g+"i$zqB_C<6',
};
```

> You can find all possible configuration options at [Github: node-jsonwebtoken](https://github.com/auth0/node-jsonwebtoken)

### createJwt(payload, jwtSettings)

Returns a json webtoken with the provided payload and configuration. (**Asynchronous**)

### authenticateJwt(token, jwtSettings)

Returns a decoded jwt token when the provided token is still valid. (**Asynchronous**)

### decodeJwt(token)

Returns a decoded json webtoken. This does not validate the token. (**Synchronous**)

## Sessions

### getSession(options)

Returns an express middleware function to use on session based routes using the `express-session` module. (**Synchronous**)

```javascript
const app = express();

const session = getSession({
secret: 'mySuperSecretSecret'
});

app.use(session);
```

- [All available express-session options](https://github.com/expressjs/session)

## Two-factor authentication

Two-factor authentication functions using the `speakeasy` module.

### generate2FAKey(options)

Returns two-factor authentication key with base32 and otp-authentication url needed for QR code generation

```javascript
const { otpauth_url, base32, ... } = generate2FAKey();
```

- [All available speakeasy options](https://github.com/speakeasyjs/speakeasy)

### generateQrCode(options)

Returns QR code image data, user secret, and url (if you wish to have a custom qr code implementation)

```javascript
const { imageData, secret, url } = generateQrCode(options);
```

- [All available speakeasy options](https://github.com/speakeasyjs/speakeasy)

### verifyToken(secret, token)

Verify whether a token is valid depending on a provided user secret (returns true/false)

```javascript
const isValidCode = verifyToken('userSecret', 021214);
```

## LDAP

### CreateLdapClient(clientOptions, dnString, password)

- [All available ldapClient options](http://ldapjs.org/client.html)

WARNING !! : unbind function does not work in node 10
See (https://github.com/joyent/node-ldapjs/issues/483)

### searchUsers(ldapClient, dnString, filterOptions)

- [All available filter options](http://ldapjs.org/client.html)

#### Example

```javascript
const clientOptions = {
url: 'ldap://ldap.forumsys.com',
port: '389',
};
const dnString = 'cn=read-only-admin,dc=example,dc=com';
const password = 'password';

// create a client instance that is connected with the directory server
const client = createLdapClient(clientOptions, dnString, password);

const searchDn = 'dc=example,dc=com';
const filterOptions = {
filter: '(objectClass=*)',
scope: 'sub',
};

//Search users in the directory server
const users = await searchUsers(client,searchDn, filterOptions)
```

## SAML

### createLoginRequest(serviceProvider, identityProvider, binding)

Returns a login url to the identity provider

### parseSAMLResponse(serviceProvider, identityProvider, request)

Parses the SAML request to a JSON object

### createLogout(serviceProvider, identityProvider, user, redirectUrl?)

Creates an SSO logout url for the given user (sp initiated)

### createServiceProvider(xmlMetaData: string | Buffer, args: ServiceProviderSettings = {})

Creates a service provider object to interact with.

- [All service provider options](https://samlify.js.org/#/sp)

### createIdentityProvider(xmlMetaData: string | Buffer, args: IdentityProviderSettings = {})

Creates an identityProvider object to interact with

- [All identity provider options](https://samlify.js.org/#/sp)

#### Example

```javascript
const serviceProvider = createServiceProvider(...);
const identityProvider = createIdentityProvider(...);

// Login
async (req, res) => {
const loginUrl = createLoginRequest(serviceProvider, identityProvider, 'redirect')
res.redirect(loginUrl);
}

// The identity provider will send SAML response upon successful authentication
// We will validate the response
async (req, res) => {
const user = parseSAMLResponse(serviceProvider, identityProvider, req);
if (user) { /* business logic} */ }
}

// Logout
async (req, res) => {
const logoutUrl = createLogout(serviceProvider, identityProvider, user, redirectUrl)
res.redirect(logoutUrl)
}

```

- [All available samlify options](https://github.com/tngan/samlify)

## Utilities

### generateRandomHash(algorithm (optional), secret (optional))

Returns a random hash (can be used for tokens) (**Synchronous**)

### getHashedPassword(password, saltCount)

Returns a hashed password. (**Asynchronous**)

### comparePassword(password, hashedPw)

Check whether a password is valid compared with a hashed password. (**Asynchronous**)

### hashPassword(password, options = { algorithm, key, iv})

Hash a password. (**Asynchronous**)

### dehashPassword(password, options = { algorithm, key, iv})

Dehash a password. (**Asynchronous**)

## Tests

You can run `npm run test` to run all tests
You can run `npm run test:coverage` to run all tests with coverage report

## Authors

See the list of [contributors](https://github.com/icapps/tree-house-authentication/contributors) who participated in this project.

## License

This project is licensed under the ISC License - see the [LICENSE.md](LICENSE.md) file for details