google marketplace multiple client_id - google-apps-marketplace

We are trying to put an app on the marketplace which needs multiple client_ids
(The app is running on appengine standard with python 2.7)
a client_id for the service_account with domain wide authority
a client_id for the web application
a client_id from an apps-script library
All client_ids use different scopes. I have combined all scopes and entered them on the marketplace SDK configuration.
When i deploy the app on a test domain, only the serviceaccount seems to be authorized.
When the user then access the webapplication he is presented a grant screen which we want to avoid.
The documentation https://developers.google.com/apps-marketplace/preparing?hl=fr seems to imply that multiple client_id's are possible.
How should i configure the marketplace app so that multiple client_ids are authorized?
Is there something special i should do on the credentials configuration page of the api-manager?

Check how you implement the authorization using OAuth 2.0, Service accounts allow a Google Apps domain administrators to grant service accounts domain-wide authority to access user data on behalf of users in the domain. You can also read Server to Server Applications documentation.
Note: You can only use AppAssertionCredentials credential objects in applications that are running on Google App Engine or Google Compute Engine. If you need to run your application in other environments—for example, to test your application locally—you must detect this situation and use a different credential mechanism (see Other). You can use the application default credentials to simplify this process.
Hope this helps.

It turned out all three client_id's were being authorized after all.
the days that i was testing this, it took very long for the authorization to take effect.
At this time all scopes and clientid are authorized within a few minutes.

Related

The application utilizing the gmail-api must run in Goolge Cloud Platform?

When I want to use Google's Gmail API within my web application in order to receive and send emails, then must this web application be deployed in the Google Cloud as a precondition and any on-premise hosting will fail? Is this the price one must pay to use it?
Your application's code can be hosted anywhere you want. However, you do need to create a Google Cloud account to create a project, enable the APIs and get the application credentials:
Cloud APIs use application credentials for identifying the calling applications. Credential types include API keys, OAuth 2.0 clients, and service accounts. You can use Google Cloud console to create, retrieve, and manage your application credentials. For more information about application credentials, see Authentication Overview.
Once you have your project's credentials you can just create the code within your current app and use the credentials wherever they are needed. You can refer to one of Google's quickstarts for that.
Sources:
Getting started with Google Cloud APIs
Developing on Google Workspace
Gmail API Overview

How to restrict access to a small user community (IAM users) in GCP / Cloud DNS / HTTPS application

I have a request to restrict the access (access control) to a small user community in GCP.
Let me explain the question.
This is the current set up:
A valid GCP Organization: MyOrganization.com (under which the GCP project is deployed / provisioned)
Cloud DNS (To configure domain names, A & TXT records, zones and subdomains to build the URL for the application).
Oauth client set up (tokens, authorized redirects URIs, etc.).
HTTPS load balancer (GKE -managed k8s service- with ingress service), SSL certificate and keys issued by a trusted CA.
The application was built using python + Django framework.
I have already deployed the application (GCP resources) and it is working smooth.
The thing is that, since we are working in GCP, all IAM users who has a valid userID#MyOrgnization.com can access the application (https://URL-for-my-Appl.com).
Now, I have a new request, which consists in restricting access (access control) to the application only for a small user community within that GCP organization.
For example, I need to ensure that only specific IAM users can access the application (https://URL-for-my-Appl.com), such as:
user1#MyOrganization.com
user2#MyOrganization.com
user3#MyOrganization.com
user4#MyOrganization.com
How could I do that, taking into account the info I sent earlier ?
thanks!
You can use Cloud IAP (Identity Aware Proxy) in order to do that.
Identity-Aware Proxy (IAP) lets you manage access to applications
running in App Engine standard environment, App Engine flexible
environment, Compute Engine, and GKE. IAP establishes a central
authorization layer for applications accessed by HTTPS, so you can
adopt an application-level access control model instead of using
network-level firewalls. When you turn on IAP, you must also use
signed headers or the App Engine standard environment Users API to
secure your app.
Note: you can configure it on your load balancer.
It's not clear in your question if your application uses google auth (but considering that you talk about org-restricted login I think so) - if that's the case you should be able to enable it without virtually touching anything in your application if you are using the Users API.
The best and easiest solution is to deploy IAP (Identity Aware Proxy) on your HTTPS Loadbalancer
Then, grant only the user that you want (or create a gsuite user group and grant it, it's often easier to manage)

Authenticating External System Connections to Web API with Azure AD

I'm trying to figure out how to migrate a system that is currently using ACS to Azure AD. I've read the migration docs provided by Azure and have looked through the Azure AD docs and the sample code but I'm still a bit lost as to what the best approach for my situation would be.
I've got a web API that has about 100 separate external systems that connect to it on a regular basis. We add a new connections approximately once a week. These external systems are not users--these are applications that are integrated with my application via my web API.
Currently each external system has an ACS service identity / password which they use to obtain a token which we then use to authenticate. Obviously this system is going away as of November 7.
All of the Azure AD documentation I've read so far indicates that, when I migrate, I should set up each of my existing clients as an "application registration" in Azure AD. The upshot of this is that each client, instead of connecting to me using a username and password, will have to connect using an application ID (which is always a GUID), an encrypted password, and a "resource" which seems to be the same as an audience URL from what I can see. This in itself is cumbersome but not that bad.
Then, implementing the authorization piece in my web API is deceptively simple. It looks like, fundamentally, all I need to do is include the properly configured [Authorize] attribute in my ApiController. But the trick is in getting it to be properly configured.
From what I can see in all the examples out there, I need to hard-code the unique Audience URL for every single client that might possibly connect to my API into my startup code somewhere, and that really does not seem reasonable to me so I can only assume that I must be missing something. Do I really need to recompile my code and do a new deployment every time a new external system wants to connect to my API?
Can anyone out there provide a bit of guidance?
Thanks.
You have misunderstood how the audience URI works.
It is not your client's URI, it is your API's URI.
When the clients request a token using Client Credentials flow (client id + secret), they all must use your API's App ID URI as the resource.
That will then be the audience in the token.
Your API only needs to check the token contains its App ID URI as the audience.
Though I want to also mention that if you want to do this a step better, you should define at least one application permission in your API's manifest. You can check my article on adding permissions.
Then your API should also check that the access token contains something like:
"roles": [
"your-permission-value"
]
It makes the security a bit better since any client app with an id + secret can get an access token for any API in that Azure AD tenant.
But with application permissions, you can require that a permission must be explicitly assigned for a client to be able to call your API.
It would make the migration a tad more cumbersome of course, since you'd have to require this app permission + grant it to all of the clients.
All of that can be automated with PowerShell though.

Safely Storing Credentials for Different Users on Heroku Slack App

I'm making a Slack App and just implemented OAuth to take advantage of Slack's Web API. I am using the single Access Token for my particular team that I am testing on.
Should I want to distribute this app on the Slack App Directory, will I have to store the Access Token for every single team? How should I go about securely storing these? Will the Heroku database suffice?
Yes, your app needs to store the access token for each Slack team that installs it. And your app will need to access those tokens in order to enable access to that team's Slack (e.g. post a message). Most people will use a local database (e.g. MySQL) on the server to store the access tokens of each team.
No idea how secure the Heroku database is. However, since Heroku is a commercial service I would assume it can provide sufficient security for your app.

Google IAM api to add GSuite domain wide delegation

I am working on a application that is using google service account with domain wide delegation.
I don't want client to do setting of domain wide delegation and download private key. I could create private key using IAM api.
is there a way to achieve domain wide delegation also via API ?
Thanks
Google's IAM API is part of their Google Cloud API's. As far as I'm aware, there is no equivalent API for standard Google developer project IAM, which is where you would do anything around projects targeting G Suite API's (and the only place where there is a Domain Wide Delegation setting for a service account, AFAIK).
You can grant a service account permission at the Organization level in Google Cloud, but I'm not sure whether that has any effect on the GSuite access controls, as nferrell mentions.

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