I have 2 GAE. GAE1 has REST API (Tastypie without implementation of oauth authentication). GAE2 calls the REST API of GAE1.
If calling the API:
data = urllib2.urlopen("http://___GAE1____.com/api_ws/api/v1/test/?format=json").read()
the returned result is sign-on page, not JSON result from GAE1.
How to perform authentication hosted by GAE? OAuth2 or API key?
I read https://developers.google.com/api-client-library/python/guide/aaa_oauth
But could not figure out what is client secret, scope (my REST API or some google cloud API?)
Related
I have a scenario where I have an on-premise GUI application which has a "Web Service Invoke" component which I use to call a GAE API.
In the GUI application, it is possible to:
store credentials
create a chain of web services/http(s) calls that can integrate an output of preceding https(s) call as a query parameter or header value into the next http(s) call
retrieve a value from JSON response of the http(s) call
But it is not possible to programmatically do anything. The Web Service widget has fields for passing API URL, query parameters and headers only.
I'm looking to do a service-to-service authentication for the API call and the API should be protected using IAP as well.
I'm aware of the recommended approach is to create a service account and provide the service account JSON key file to the client and the client signs a JWT token and pass it as a bearer token. But as I only have widgets, no programming possible, therefore signing JWT token is not an option.
I was looking at Google OAuth or IAM APIs which can support "client_credentials" grant type wherein I can get an access token using just clientId and clientSecret - something possible in Apigee. But it seems this grant type is not supported by Google OAuth APIs.
I also looked at Cloud Endpoints using API KEY - so the current thought is to the client passes API KEY in header/parameter for authentication to Cloud Endpoints, then Cloud Endpoints uses its service account to get access through IAP, and finally, I'm thinking that the client can also send in "Basic Auth" credentials through Authorization header which the GAE API backend service validates. The additional "Basic Auth" is because Google recommends using another auth method in addition to API KEY.
I would like a simpler solution if possible using GAE and IAP only. Any other suggestions, especially using time-limited tokens, that can work over only http(s) calls (non-programmatic or client library), is much appreciated.
Any alternatives or things to try is also appreciated.
Look into this server-to-server authentication using JWT Google API Authentication
I have an angular web app talking to a c# .net web api back end.
They are both hosted on azure app services.
Azure app services offers a suite of authentication services and I've chosen to use google auth.
I've got my google client id and secret setup in azure google auth and my web app correctly shows and prompts me for my google credentials.
My problem now, is that i need my web api back end to authenticate the web app google token. I couldn't find any articles or tutorials that demonstrates the following:
How to get and send the token to the web api? I've read that azure app service should automatically inject the necessary auth headers but any calls to my api do not include those headers. Should i manually call auth/me and add them to the request header?
How do i get my web api to authenticate the details from the request header with google auth? Do i need a separate client id for the web api or should i re-use the web app client id?
Cheers!
According to your description, I assumed that you are using the built-in Authentication / Authorization provided by Azure App Service.
AFAIK, App Service Authentication (Easy Auth) provides two flows: client-managed and server-managed flow. For the server-managed flow, the server code manages the sign-in process for you, and your backend would directly receive the token from the relevant identity provider (e.g. Google, AAD,etc.), then both generate a authenticationToken for browser-less apps and AppServiceAuthSession cookie for browser apps. Details you could follow Authentication flow.
For your angular web app, you could just use server-managed flow, after user successfully logged, you need to call https://<your-angular-app-name>.azurewebsites.net/.auth/me to retrieve the google access_token, then send the following request against your web api endpoint for retrieving the authenticationToken as follows:
POST https://<your-webapi-app-name>.azurewebsites.net/.auth/login/google
Body {"access_token":"<the-google-access-token>"}
After successfully retrieved the authenticationToken from your Web API endpoint, you could send the following subsequent requests for accessing your APIs:
GET https://<your-webapi-app-name>.azurewebsites.net/api/values
Header x-zumo-auth:"<authenticationToken-generated-by-your-webapi>"
Moreover, you could also use client-managed flow in your angular web app, you may need to directly contact with your identity provider (Google) to retrieve the access_token in your client via Auth0 or google-signin or other third-party libraries. Then you may need to both send request to your angular web app and Web API web app for retrieving the authenticationToken as the above request sample.
Do i need a separate client id for the web api or should i re-use the web app client id?
Per my understanding, you must use the same google application. For AAD authentication, you could configure a AAD app with the access permissions to another AAD app.
I want to understand how a static site with no backend can use okta with other custom API services hosted on other platforms.
Scenerio:
Website is a angluar/reactjs that is hosted as a "static" website.
I'm assuming when you authenticate using okta in e.g. react/angular website I am able to store the okta session id in local storage or cookie.
How say I create a web service and host that on heroku, how can I figure out if the user has authenticated or not and re-use the session?
The scenario where you have:
A JavaScript frontend application, hosted statically
A backend web service (API), that the JavaScript app makes API requests to
is a classic single-page app (SPA) scenario. The recommended authentication flow is the OpenID Connect implicit flow.
In plain English, you are:
Setting up your JavaScript app to talk to Okta (or another OpenID Connect identity provider)
Getting an access token from the identity provider
Attaching the access token to an API request to authorize it
Your API service could be running on Heroku, or somewhere else. In your API service code, you have to validate the access token before you decide to accept the request. The API service can go back and talk to the identity provider to determine if the user's access token is still valid.
How the API service validates the token depends on what language you are using to build your API service. But, that's basic idea: the access token is what authorizes the user's requests.
I am building a simple AngularJs web app that hits a REST Api built with Flask. From what I understand, there are a few ways to protect against CSRF, one of which is sending back a CSRF token when the user authenticates.
If I wanted to make my API available to both the Web Application and to users who want to use it as an API for development, would I need 2 endpoints for each endpoint that allows POST requests [one for the app that requires CSRF token + auth token and one for the developers that requires just an api access key]?
Not necessarily. Broadly, you have two options:
Proxy the REST API through whatever server-side container your web app is running in. Your web-app proxy can then implement the CSRF protection and insert the API-key into the API request.
Check the referrer header on all API requests. Although this requires that your Angular SPA and API share the same authentication mechanism, so you'd have to use something more sophisticated than an API key, like OAuth.
I am using Google App Engine with it's default OAuth Service. I can easily access it with the help of Google OAuth Java Client Library - I get the request token, user authorizes and everything work just fine.
My question is - is there a way to access my API without user context? So called application-only method (see Twitter) (in OAuth2 it's called client_credentials?
Because some of my API methods (on my personal Google App Engine application) really don't need any user context - just a consumer key so I can identify and measure my API consumers.