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@ttoss/cloud-auth

v0.12.24

Published

It's a library for creating AWS Cognito resources. It creates an user pool, identity pool, a client application, and others resources.

Downloads

189

Readme

@ttoss/cloud-auth

It's a library for creating AWS Cognito resources. It creates an user pool, identity pool, a client application, and others resources.

Installation

pnpm add @ttoss/cloud-auth

Quickstart

Create a cloudformation.ts file in your project and export the template:

import { createAuthTemplate } from '@ttoss/cloud-auth';

const template = createAuthTemplate();

export default template;

Usage

Identity Pool

Create an basic identity pool

const template = createAuthTemplate({
  identityPool: {
    enabled: true, // false by default
    name: 'MyIdentityPool',
    allowUnauthenticatedIdentities: false, // false by default
  },
});

Create an identity pool with external roles

const template = createAuthTemplate({
  identityPool: {
    enabled: true,
    authenticatedRoleArn:
      'arn:aws:iam::123456789012:role/MyIdentityPool_AuthenticatedRole',
    unauthenticatedRoleArn:
      'arn:aws:iam::123456789012:role/MyIdentityPool_UnauthenticatedRole',
  },
});

Create an identity pool with defined policies

const template = createAuthTemplate({
  identityPool: {
    enabled: true,
    authenticatedPolicies: [
      {
        policyName: 'MyIdentityPool_AuthenticatedPolicy',
        policyDocument: {
          Version: '2012-10-17',
          Statement: [
            {
              Effect: 'Allow',
              Action: ['mobileanalytics:PutEvents', 'cognito-sync:*'],
              Resource: ['*'],
            },
          ],
        },
      },
    ],
    unauthenticatedPolicies: [
      {
        policyName: 'MyIdentityPool_UnauthenticatedPolicy',
        policyDocument: {
          Version: '2012-10-17',
          Statement: [
            {
              Effect: 'Deny',
              Action: ['*'],
              Resource: ['*'],
            },
          ],
        },
      },
    ],
  },
});

Using attributes for access control

When you enable the identity pool, it maps the following principal tags to handle access control by default:

PrincipalTags:
  appClientId: 'aud'
  userId: 'sub'

This way you can use the appClientId and userId tags in your IAM policies by controlling access for IAM principals. For example:

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Action": "s3:GetObject*",
      "Resource": "arn:aws:s3:::*-${aws:PrincipalTag/userId}/*"
    }
  ]
}

You can change the default tags by passing the principalTags property and other tokens:

const template = createAuthTemplate({
  identityPool: {
    enabled: true,
    principalTags: {
      appId: 'aud',
      username: 'sub',
      name: 'name',
    },
  },
});

If you want to disable the principal tags, you can pass the principalTags property with false value:

const template = createAuthTemplate({
  identityPool: {
    enabled: true,
    principalTags: false,
  },
});