Authentication

Contributing

If you want to contribute a new auth provider integration we recommend you start by implementing it as a custom auth provider in a Redwood App first. When that works you can package it up as an npm package and publish it on your own. You can then create a PR on this repo with support for your new auth provider in our yarn rw setup auth cli command. The easiest option is probably to just look at one of the existing auth providers in packages/cli/src/commands/setup/auth/providers and the corresponding templates in ../templates.

If you need help setting up a custom auth provider you can read the auth docs on the web.

Contributing to the base auth implementation

If you want to contribute to our auth implementation, the interface towards both auth service providers and RW apps we recommend you start looking in authFactory.ts and then continue to AuthProvider.tsx. AuthProvider.tsx has most of our implementation together with all the custom hooks it uses. Another file to be accustomed with is AuthContext.ts. The interface in there has pretty god code comments, and is what will be exposed to RW apps.

getCurrentUser

getCurrentUser returns the user information together with an optional collection of roles used by requireAuth() to check if the user is authenticated or has role-based access.

Use in conjunction with requireAuth in your services to check that a user is logged in, whether or not they are assigned a role, and optionally raise an error if they're not.

@param decoded - The decoded access token containing user info and JWT claims like `sub`
@param { token, SupportedAuthTypes type } - The access token itself as well as the auth provider type
@param { APIGatewayEvent event, Context context } - An object which contains information from the invoker
such as headers and cookies, and the context information about the invocation such as IP Address

Examples

Checks if currentUser is authenticated

This example is the standard use of getCurrentUser.

export const getCurrentUser = async (decoded, { _token, _type }, { _event, _context }) => {
  return { ...decoded, roles: parseJWT({ decoded }).roles }
}

User details fetched via database query

export const getCurrentUser = async (decoded) => {
  return await db.user.findUnique({ where: { decoded.email } })
}

User info is decoded from the access token

export const getCurrentUser = async (decoded) => {
  return { ...decoded }
}

User info is contained in the decoded token and roles extracted

export const getCurrentUser = async (decoded) => {
  return { ...decoded, roles: parseJWT({ decoded }).roles }
}

User record query by email with namespaced app_metadata roles as Auth0 requires custom JWT claims to be namespaced

export const getCurrentUser = async (decoded) => {
  const currentUser = await db.user.findUnique({ where: { email: decoded.email } })

  return {
    ...currentUser,
    roles: parseJWT({ decoded: decoded, namespace: NAMESPACE }).roles,
  }
}

User record query by an identity with app_metadata roles

const getCurrentUser = async (decoded) => {
  const currentUser = await db.user.findUnique({ where: { userIdentity: decoded.sub } })
  return {
    ...currentUser,
    roles: parseJWT({ decoded: decoded }).roles,
  }
}

Cookies and other request information are available in the req parameter, just in case

const getCurrentUser = async (_decoded, _raw, { event, _context }) => {
  const cookies = cookie(event.headers.cookies)
  const session = cookies['my.cookie.name']
  const currentUser = await db.sessions.findUnique({ where: { id: session } })
  return currentUser
}

requireAuth

Use requireAuth in your services to check that a user is logged in, whether or not they are assigned a role, and optionally raise an error if they're not.

@param {string=} roles - An optional role or list of roles
@param {string[]=} roles - An optional list of roles

@returns {boolean} - If the currentUser is authenticated (and assigned one of the given roles)

@throws {AuthenticationError} - If the currentUser is not authenticated
@throws {ForbiddenError} If the currentUser is not allowed due to role permissions

Examples

Checks if currentUser is authenticated

requireAuth()

Checks if currentUser is authenticated and assigned one of the given roles

 requireAuth({ role: 'admin' })
 requireAuth({ role: ['editor', 'author'] })
 requireAuth({ role: ['publisher'] })