Ally driver boilerplate

A boilerplate for creating custom AdonisJS Ally drivers

This repo is a starting point to create your custom OAuth2 drivers for AdonisJS ally.

The boilerplate is tailored to create one driver per project and publish it as a package on npm.

Getting started

Following are the steps to get started.

• Fork this repo and then clone it on your local machine.

• Install all the dependencies using npm, pnpm, or yarn (whatever you prefer).

• Open the package.json file and update the name, description, and the author details.

  {
    "name": "ally-custom-service",
    "description": "Starter kit to create an Ally driver for an OAuth2 service",
    "author": ""
  }

How is the code structured?

The code for the driver is inside the src directory. Make sure to change the YourDriver keyword references inside the src/driver.ts file with the service name for which you are creating the driver. For example, Change YourDriver to AppleDriver or InstagramDriver.

The driver implementation is mainly driven by the config, except for the user and the userFromToken methods. Both of these methods are specific to the Oauth provider, so you have to implement them yourself.

The src/driver.ts file has the following exports.

YourDriverAccessToken

The type defines the properties on the access token returned by the driver. You must read your OAuth provider documentation and list all the properties here.

Do not change the pre-defined token and bearer properties.

export type YourDriverAccessToken = {
  token: string
  type: 'bearer'
}

YourDriverScopes

Define a union of driver scopes accepted by your OAuth provider. You can check out the official implementations to see how they are defined.

YourDriverConfig

The type defines the configuration options that your driver expects. It must specify the following properties and any additional properties your driver needs to be functional.

export type YourDriverConfig = {
  driver: 'YourDriverName'
  clientId: string
  clientSecret: string
  callbackUrl: string
  authorizeUrl?: string
  accessTokenUrl?: string
  userInfoUrl?: string
}

YourDriver

The driver implementation is a standard TypeScript class that extends the base Oauth2Driver class. The base driver class forces you to define the following instance properties.

• authorizeUrl is the URL for the redirect request. The user is redirected to this URL to authorize the request. Check out provider docs to find this URL.
• accessTokenUrl is used to exchange the authorization code for the access token. Check out provider docs to find this URL.
• userInfoUrl is used to get the user profile information.
• codeParamName is the query string parameter for reading the authorization code after redirecting the user back to the callback URL.
• errorParamName is the query string parameter for finding the error after redirecting the user to the callback URL.
• stateCookieName is the cookie name for storing the CSRF token (also known as the state). Make sure the cookie name does not collide with other drivers. A safer option is to prefix the driver name followed by the oauth_state keyword.
• stateParamName is the query string parameter name for setting the state during the authorization redirect.
• scopeParamName is the query string parameter name for sending the scopes during the authorization redirect.
• scopesSeparator is the character used for separating multiple parameters.

YourDriverService

A factory function to reference the driver within the config/ally.ts file of an AdonisJS application. For example:

import { YourDriverService } from 'your-package-name'

defineConfig({
  github: YourDriverService({
    clientId: env.get('GITHUB_CLIENT_ID')!,
    clientSecret: env.get('GITHUB_CLIENT_SECRET')!,
    callbackUrl: '',
  }),
})

Development checklist

• I have renamed all YourDriver references to a more meaningful name inside the src/driver.ts file.
• I have defined the authorizeUrl class property.
• I have defined the accessTokenUrl class property.
• I have defined the userInfoUrl class property.
• I have defined the codeParamName class property.
• I have defined the errorParamName class property.
• I have defined the stateCookieName class property.
• I have defined the stateParamName class property.
• I have defined the scopeParamName class property.
• I have defined the scopesSeparator class property.
• I have implemented the accessDenied class method.
• I have implemented the user class method.
• I have implemented the userFromToken class method.

Testing the driver

You can test the driver by installing it locally inside your AdonisJS application. Following are the steps you need to perform.

• Compile the TypeScript code to JavaScript using the npm run build script.
• cd into your AdonisJS project and install the package locally using npm i path/to/your/driver/package.
• Finally, reference the driver using the YourDriverService factory function inside the config/ally.ts file.

FAQ's

How do I define extra params during redirect?

You can configure the redirect request by implementing the configureRedirectRequest method on the driver class. The method is already pre-defined and commented out.

protected configureRedirectRequest(request: RedirectRequest<YourDriverScopes>) {
  request.param('key', 'value')
}

How do I define extra fields/params for the access token request?

You can configure the access token request by implementing the configureAccessTokenRequest method on the driver class. The method is already pre-defined and commented out.

protected configureAccessTokenRequest(request: ApiRequest) {
  // Request body
  request.field('key', 'value')

  // Query param
  request.param('key', 'value')
}

Share with others

Are you excited about sharing your work with others? Submit your package to the awesome-adonisjs repo.