graphql-auth-directives

Add authentication to your GraphQL API with schema directives.

Schema directives for authorization

• [ ] @isAuthenticated
• [ ] @hasRole
• [ ] @hasScope

Quick start

npm install --save graphql-auth-directives

Then import the schema directives you'd like to use and attach them during your GraphQL schema construction. For example using neo4j-graphql.js' makeAugmentedSchema:

import { IsAuthenticatedDirective, HasRoleDirective, HasScopeDirective } from "graphql-auth-directives";

const augmentedSchema = makeAugmentedSchema({
  typeDefs,
  schemaDirectives: {
    isAuthenticated: IsAuthenticatedDirective,
    hasRole: HasRoleDirective,
    hasScope: HasScopeDirective
  }
});

The @hasRole, @hasScope, and @isAuthenticated directives will now be available for use in your GraphQL schema:

type Query {
    userById(userId: ID!): User @hasScope(scopes: ["User:Read"])
    itemById(itemId: ID!): Item @hasScope(scopes: ["Item:Read"])
}

Be sure to inject the request headers into the GraphQL resolver context. For example, with Apollo Server:

const server = new ApolloServer({
  schema,
  context: ({ req }) => {
    return req;
  }
});

In the case that the token was decoded with no errors the context.user will store the payload from the token

me: (parent, args, context) => {
      console.log(context.user.id);
}

A JWT must then be included in each GraphQL request in the Authorization header. For example, with Apollo Client:

import { createHttpLink } from 'apollo-link-http';
import { setContext } from 'apollo-link-context';
import { InMemoryCache } from 'apollo-cache-inmemory';
import { ApolloClient } from 'apollo-client';


const httpLink = createHttpLink({
    uri: <YOUR_GRAPHQL_API_URI>
});

const authLink = setContext((_, { headers }) => {
    const token = localStorage.getItem('id_token'); // here we are storing the JWT in localStorage
    return {
        headers: {
            ...headers,
            authorization: token ? `Bearer ${token}` : "",
        }
    }
});

const client = new ApolloClient({
    link: authLink.concat(httpLink),
    cache: new InMemoryCache()
});

Configure

Configuration is done via environment variables.

(required) There are two variables to control how tokens are processed. If you would like the server to verify the tokens used in a request, you must provide the secret used to encode the token in the JWT_SECRET variable. Otherwise you will need to set JWT_NO_VERIFY to true.

export JWT_NO_VERIFY=true //Server does not have the secret, but will need to decode tokens

or

export JWT_SECRET=><YOUR_JWT_SECRET_KEY_HERE> //Server has the secret and will verify authenticity

(optional) By default @hasRole will validate the roles, role, Roles, or Role claim (whichever is found first). You can override this by setting AUTH_DIRECTIVES_ROLE_KEY environment variable. For example, if your role claim is stored in the JWT like this

"https://grandstack.io/roles": [
    "admin"
]

Set:

export AUTH_DIRECTIVES_ROLE_KEY=https://grandstack.io/roles

Running Tests Locally

1. create ./test/helpers/.env
2. add relevant values
3. run the test server

npx babel-node test/helpers/test-setup.js

4. run the tests

npx ava test/*.js

Test JWTs

Scopes: user:CRUD

key: qwertyuiopasdfghjklzxcvbnm123456

eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJpc3MiOiJHUkFORHN0YWNrIiwiaWF0IjoxNTQ5MTQ1Mjk0LCJleHAiOjE2OTE3ODEzMDcsImF1ZCI6ImdyYW5kc3RhY2suaW8iLCJzdWIiOiJib2JAbG9ibGF3LmNvbSIsIlJvbGUiOiJBRE1JTiIsIlNjb3BlIjpbIlVzZXI6UmVhZCIsIlVzZXI6Q3JlYXRlIiwiVXNlcjpVcGRhdGUiLCJVc2VyOkRlbGV0ZSJdfQ.WJffOec05r8KuzW76asax1iCzv5q4rwRv9kvFyw7c_E