I have been developing an extension, which is using the chrome.identity API (chrome.identity.getAuthToken method) in order to receive the OAuth2 token for signing up extension users via Google+.
I would like to push this extension in a company via Google Admin Console, but when chrome.identity.getAuthToken method is being called, our extension users are present with the "Identity API Scope Approval" screen - the consent screen, where users have to authorize extension's access to scopes we want access to.
I am aware, how process of getting OAuth2 access tokens works in general, and that user's approval is normally required in order to receive the OAuth2 token.
However, is it possible to automatically skip & authorize this OAuth2 consent screen only for users, whose extension was deployed via Google Admin Console?
I've found an interesting on Chromium Bugs list, where OP states:
We are working on integrating Quickoffice for Chrome (which is a chrome extension) with the Drive Web UI. In order to handle OAuth we use chrome.identity, which works great.
and also the following:
since our extension is white listed as a first party app, we by pass the user content screen for the OAuth flow (which is what we want for the seamless integration with drive web ui).
I was not able to find any information, how to neither whitelist the extension as a first party app in order to prevent the consent screen from showing up, nor how to automatically authorize extension's access to those API scopes.
Any ideas?
If you include identity.email in the manifest permissions, and it is a force-installed extension or app through the admin console, then you will be able to get the user's identity and also the auth token without user oauth prompt approval.
However this only allows you to get the user's identity, no extended permissions. Any extended permissions (such as gdrive access, etc) need an oauth prompt.
Related
When attempting to use Google federated authentication login button for a Google webapp, error message identified mismatch with related URI and javascript host domains. Solutions, as in this 2019 post (Get gmail address using Google Apps Script, Error: redirect_uri_mismatch) weren't working for me.
I then found this recent article: What is the Authorized Javascript Origin for a webapp powered by Google Script?
I understand it to say that, due to recent actions by Google, it is no longer possible to use the Google authenticator for a Google webapp because redirect URI and javascript origin host domains "cannot be googleusercontent.com”, which is the host domain for Google webapps.
So, my question duplicates earlier posts (i.e., 2019) but in new circumstances. The conclusion of the recent post I've cited seems so radical to me that I'm seeking confirmation, or explanation of how I am misunderstanding it.
As background: I need the webapp to operate under the "(me)owner" account for connectivity to owner spreadsheets, but also need the user's Gmail address (required) for application access control (no other access to user Gmail account; users not all in a shared Workspace domain). Google login would provide the user Gmail address. So, before totally abandoning this solution, I hoping to get additional clarification.
According to the official docs, it's not possible to use Google Sign-In for Websites, and this post from the Google Apps Script Issue tracker Fail to Add *.googleusercontent.com into Authorized JavaScript origins as Google Apps Script uses googleusercontent.com
To achieve your goal, as I mentioned in your previous question, you might use the UrlFeth service to call the Google Sheets API to do the connectivity to your spreadsheet and setting the web app as the user instead as you.
From https://developers.google.com/identity/protocols/oauth2/web-server#uri-validation
Domain
Host TLDs (Top Level Domains) must belong to the public suffix list.
Host domains cannot be “googleusercontent.com”.
Redirect URIs cannot contain URL shortener domains (e.g. goo.gl) unless the app owns the domain. Furthermore, if an app that owns a shortener domain chooses to redirect to that domain, that redirect URI must either contain “/google-callback/” in its path or end with “/google-callback”.
Related
How to Properly Configure GAS Web App (as another user) to Execute GAS API Executable (as me) using OAuth2?
User access request when GAS run as the user
While true that you can no longer add googleusercontent.com, you may be able to solve this by using two webapps and managing authentication/authorization between the two:
Webapp#1:
Run as: Me
Access: Anyone even anonymous
Webapp#2:
Run as: User
Access: Anyone
You may be able to create a jwt token from webapp#2 and verify it on webapp#1. As it is a custom solution, security may be questionable.
References:
Authenticate with a server - Here, webapp#1 acts as server and webapp#2 acts as client.
ScriptApp.getIdentityToken()
I am in the process of implementing an OAuth2 flow for a sensitive scope in my chrome extension. In order to remove the 'unverified app' warning in the OAuth2 popup I must verify the app in the Google Cloud Console.
The verification form requires 'Authorized domains' though, and it does not accept a chrome extension URL of the form 'chrome-extension://', neither does it accept a URL of the form '.chromiumapp.org'.
Is it possible to provide another domain I own as the authorized domain, and still initiate an OAuth2 flow from the chrome extension using chrome.identity.getAuthToken({interactive: true}...?
I think you need to read though the documentation on application verification
The very first one mentions that your domain must be authorized and verified in search console. The files must also be hosted on your verified registered domain.
It clearly states that
Links to the Google Play Store or Facebook are not considered valid application homepages.
The only requirements are that
Domain is registered in Search console.
Home page listed in the auth screen is relevant to your app.
So i don't see any reason you can't put it on one of your other domains. Just make sure that it qualifies for this clear its relevance to the app you’re verifying
Relevant points in the documentation.
Verify ownership of your project’s authorized domains using the Search Console. Use an account that is either a Project Owner or a Project Editor of your Cloud Console project.
Then the section about
Make sure that your homepage meets the following requirements:
Your homepage must be publicly accessible, and not behind a sign-in page.
Your homepage must make clear its relevance to the app you’re verifying.
Your homepage must be accurate, inclusive, and easily accessible to all users.
Links to the Google Play Store or Facebook are not considered valid application homepages.
There is also the Privacy posily
Make sure that your app's Privacy Policy meets the following requirements:
The Privacy Policy must be visible to users, hosted within the domain of your website, and linked from the OAuth consent screen on the Google API Console.
The Privacy Policy must disclose the manner in which your application accesses, uses, stores, or shares Google user data. Your use of Google user data must be limited to the practices disclosed in your published Privacy Policy.
I have a video that goes though the application verification process. Google OAuth. What you need to know about verification in 2021.
I was able to create a project to connect an app to google data, for a specific account (followed Google People API)
But now I would like that each customer log in hisself to his account and manage his data.
I can' t create project in the Google API Console for each customer, my app needs to read auth from each user who will use my app and "auto" create auth to read google contact data of the logged user.
Is possible?
Could you suggest me articles about how to do?
It sounds like you are trying to do exactly what OAuth 2.0 (see the page you linked to) gives you: authenticating users. This differs from using an API key, which is only authorizing your project and has nothing to do with a user's credentials.
OAuth 2.0 combines a Client ID (associated with your Google Developers Console project) and a user's login (specific to the user who is accessing your app/site) to give you an authorization token. This token will let your app act on behalf of that user when calling that API. Just make sure to request the necessary scopes as part of the OAuth 2.0 authorization prompt given to the user.
How to give this prompt varies by environment, but many common options are listed on that link.
Note that you always use the same Client ID, so you only need one Google Developers Console project, but you are given a unique token specific to that user's login when they authorize your app, so this lets you act as any user which grants your app access to their account.
Background:
This is about using a Gmail Addon created using Google App Script.
When the user installs the addon, there is the OAuth Consent Screen where user provides his consent to allow the "Product name shown to users" (as configured in the OAuth Screen) to allow the access specified.
Now, I read : https://developers.google.com/identity/protocols/CrossClientAuth
which states :
When a user grants access to your app for a particular scope, the user
is looking at the user consent screen, which includes project-level
product branding that you set up in the Google API Console. (For
information about setting up the consent screen, see Setting up OAuth
2.0 in the API Console help.) Therefore, Google considers that when a user has granted access to a particular scope to any client ID in a
project, the grant indicates the user's trust in the whole application
for that scope.
Now, I have a server web component (a lambda) (belonging to the same product) that needs access to the user's email same access that the user provided after installing the addon ("Authorized Access" button).
Question(s) :
Is there a way to have cross-client (a backend server and a gmail addon) in my case to have the backend to just get access to user's data without triggering additional (basically whatever the user has provided consent to)?
Note: Using an additional authorization screen triggered manually using the GAS OAuth library I was able to get the "Auth Code" which I pass to the server using which the server now has access to the consented data (we have used the same client id and secret). However, the problem with this approach is :
User gets 2 emails about the permissions granted. Addon and Manually triggered flow.
User has to authorize the gmail addons for first access and then another which I trigger manually.
Even if there was a way I could get the "Auth Code" when the user installs the addon that would also do.
Apologize in advance there is a lot of scattered documentation and though I went through many it is likely I may have missed something.
We only issue one authorization code (refresh token) in exchange for one user authorization/approval. Your app can get new access tokens on android or web without a user approval. But if it needs a refresh token again, user still need to approve the request.
So if the addon can talk to your server, you could give it a short lived access token or will need to user authorization.
EDIT: In case it helps others who find this, the fact that Gaia clears cookies after Chrome restart is known behavior. They recommend the use of Chrome login. See more here.
The core question: how do I fetch Google OAuth access tokens in the background from a Chrome extension without using the getAuthToken method in the chrome.identity API? This method forces users to login to Chrome, which isn't ideal for our app. There's also no way I can find to retrieve OpenID Connect ID tokens using the native methods exposed in the identity API.
Currently, I'm fetching tokens using the launchWebAuthFlow method from the chrome.identity API. This method launches an "Identity API Scope Approval UI" window in which the user makes the initial OAuth grant. This window (referred to as "gaia") has its own session / cookie data, separate from a browser session.
After the initial OAuth grant, the extension periodically retrieves access tokens in the background, and subsequently fetches data from Google APIs (e.g. Drive). This works well. When a user quits and re-opens Chrome, however, fetching access tokens fails - gaia loses its session cookies when Chrome restarts, so running the launchWebFlowAuth method doesn't complete because Google can't authenticate the user (unless we prompt the user to login in the Identity API Scope Approval UI again). Others seem to have had the same issue.
Google Sign-In would be ideal, but it doesn't work in Chrome extensions (I'm getting the same "Invalid cookiePolicy" error as the author of that issue).
Any advice on how to best handle this use case would be very much appreciated!