franzwong

const AWS = require('aws-sdk');
const s3 = new AWS.S3({apiVersion: '2006-03-01'});

const uuidv4 = require('uuid/v4');

const bucketName = process.env.bucketName;
const kmsKeyId = process.env.kmsKeyId;

const MAX_FILE_SIZE = 5 * 1024 * 1024;
const EXPIRATION = 900;

franzwong

import { Component, OnInit, Injectable } from '@angular/core';
import { Router } from '@angular/router';
import { Observable } from 'rxjs';
import { HttpHeaders, HttpClient } from '@angular/common/http';
import { map } from 'rxjs/operators';

import { environment } from './../environments/environment';

const clientId = environment.clientId;
const scope = 'https://www.googleapis.com/auth/youtube.readonly';

franzwong

variable "aws_region" {
  default = "us-east-1"
}

variable "vpc_cidr" {
  default = "10.0.0.0/16"
}

variable "webSubnetCidr" {
  default = "10.0.1.0/24"

franzwong

let response = await login(email, password)
const idToken = response.AuthenticationResult.IdToken
const { identityId, credentials } = await getUserCredentials(idToken)

const s3 = new AWS.S3({ credentials })
response = await s3.putObject({
  Body: 'Hello world',
  Bucket: process.env.S3_BUCKET, 
  Key: `${identityId}/foo.txt`,
  ContentType: 'text/plain'

franzwong

async function getUserCredentials(idToken) {
  const cognitoidentity = new AWS.CognitoIdentity()

  const providerName = `cognito-idp.${process.env.AWS_REGION}.amazonaws.com/${process.env.USER_POOL_ID}`
  let response = await cognitoidentity.getId({
    IdentityPoolId: process.env.IDENTITY_POOL_ID,
    Logins: {
      [providerName]: idToken
    }
  }).promise()

franzwong

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Action": [
        "s3:GetObject",
        "s3:PutObject",
        "s3:DeleteObject"
      ],

franzwong

{
  "Version": "2012-10-17",
  "Statement": [{
    "Effect": "Allow",
    "Principal": {"Federated": "cognito-identity.amazonaws.com"},
    "Action": "sts:AssumeRoleWithWebIdentity",
    "Condition": {
      "StringEquals": {"cognito-identity.amazonaws.com:aud": "<IDENTITY_POOL_ID>"},
      "ForAnyValue:StringLike": {"cognito-identity.amazonaws.com:amr": "authenticated"}
    }

franzwong

async function login(email, password) {
  try {
    const cognito = new AWS.CognitoIdentityServiceProvider()
    return await cognito.adminInitiateAuth({
      AuthFlow: 'ADMIN_NO_SRP_AUTH',
      ClientId: process.env.CLIENT_ID,
      UserPoolId: process.env.USER_POOL_ID,
      AuthParameters: {
        USERNAME: email,
        PASSWORD: password

franzwong

async function signUp(email, password) {
  try {
    const cognito = new AWS.CognitoIdentityServiceProvider()
    await cognito.adminCreateUser({
      UserPoolId: process.env.USER_POOL_ID,
      Username: email,
      MessageAction: 'SUPPRESS',
      TemporaryPassword: password,
    }).promise()

franzwong

AWSTemplateFormatVersion: 2010-09-09
Parameters:
  AwsRegion:
    Type: String
    Default: us-east-1
  # This bucket stores the lambda function package
  LambdaCodeBucket:
    Type: String
    Default: my-lambda
  LambdaCodeKey: