I have a website providing functionality for Google Sign In. There is a server side authentication taking place after getting idToken on client side.
Now I am making an app(in FLUTTER) for the same website. In Google API console, I have to create new credentials under the same project and that generates new client id.
I read about cross client identity (Link: https://developers.google.com/identity/protocols/oauth2/cross-client-identity). I want to know how can I implement this so that a user is asked for approval only once.
Do I really need two client ids?
This will work even if the web app and mobile (Flutter) app do not have the same client ID. This is stated in the documentation here:
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 [i.e., all clients in the project] for that scope.
You should make a project that contains multiple clients. Your Web app will be one and the Flutter app will be another. These will end up with different client IDs, but that's OK. Later, when the user authorizes (consents to) a scope from the Web app, they will still authenticate in the Flutter app but not have to reauthorize this second client to use the same scope. The reverse is also the case -- if the user authorizes a scope in the Flutter app first, they will later have to authenticate in the Web app, but they won't have to consent to the scope.
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I have a mobile application built upon Ionic Framework which uses many Cordova packages. We are upgrading the app from Ionic3 to Ionic5. In the Ionic3 application our .NET API was responsible to managing user logins. Going forward, in the Ionic5 app we will NOT be managing user credentials - we will be using 3rd party Identity Providers such as Google, Facebook, and Twitter.
We have implemented the Cordova packages to handle external authentication with Facebook and Google and it works fine. How do we tie the token that is received from Google/Facebook to our .NET API? When we try to use the token provided from Google/Facebook we - of course - get a 401 because our .NET API doesn't know about that token as it was issued from an external source.
I am aware of the process of how to enable the schema described here (External Authentication Services w/ASP.NET Web Api) but in this case the user agent browses to the Web Application in the browser. This is not true in my case as the user agent will be using a mobile application not a web site.
But I hope the principal is the same. But I'm missing something here.
The user will open the mobile app, authenticate with Google/Facebook and be issued a token. Now, what needs to happen to get that token to be recognized by my ASP.NET Web Api?
For example. When I registered my mobile app with Google Developer's Console I selected that the type of app is an Android application and was issued a Client ID for Android now how can I use this token in my ASP .NET Web API? There MUST be some way to tie the two together or some article out there.
Thanks in advance for your assistance!
Also, I looked at this post and see its 11 years old. Is there something here that I should be doing? Please help point me in the right direction. how-can-i-verify-a-google-authentication-api-access-token
It is about data ultimately, and identifying users in a consistent manner, then tracking their history with your app / business.
SOCIAL LOGIN PACKAGES
These are often cheap and nasty solutions that add complexity to your apps as you are finding.- especially when you need to look things up by user.
OPTION 1 - COMPLEX APPS
Your API could look at the token issuer (ISS claim in the token) and download token signing keys from either Facebook or Google - if JWKS endpoints exist. Then create a user from the access token's sub claim if required.
OPTION 2 - SIMPLER APPS
Deal with only a single type of token in your UIs and APIs, which will work like this. It moves the complexity to your Authorization Server (AS):
You have an Authorization Server (use Google maybe) to deal with token issuing and other central OAuth concerns
You have multiple Identity Providers (eg Facebook + Google) to support different login methods for users
During login Facebook posts a token to the AS
Then the AS issues its own token to your UI
The AS may be able to use Account Linking to provide a consistent user id regardless of login method
There is a learning curve in getting this working, but once done it can easily be scaled to many apps with zero code changes.
The proper answer is Auth0... see the below sequence diagram!
I'm trying to make a chatbot with Dialogflow for Google Home. It requires the user to input a URL. Now it will definitely be a long and complicated URL which I can't recreate and I can't have the user speak into the google home.
The idea I had was that the user would input the URL on an agent on messenger. I store this on a Firebase database and then access it with a second agent.
Now the issue I have is authentication, I was hoping to use account linking on my google action with facebook. But I can't login to Facebook with google home. Or if I can, I can't find any documentation specific to that case. Facebook doesn't provide the necessary client ID and secret(as far as I can see).
I managed amazon and Gmail account linking with Alexa and an Amazon Echo. In those cases, you would have to login to google or amazon on the Alexa app or webpage. Then this will be integrated with your Echo and the skill will become usable.
Anyone have an idea of how I can make the link happen, if not then anyone have an idea as to how I can solve the overall problem?
This question has been left unanswered on other forums, but I was hoping to either get it solved or find an alternative.
There are three approaches to solving your overall problem - getting the URL manually entered and available to your Action. Two of them tackle it the way you've suggested - involving authenticating to Facebook and tying that to the Assistant account somehow. One solves it entirely inside the Assistant.
Account linking to the Facebook account
You've tagged firebase-authentication, so I'm going to assume that you're using it to do the auth and you've enabled Facebook login through it. This means your user has a "Firebase Account", but they log into that account using Facebook.
I will assume you have a way to get the URL from messenger once they're logged in.
The trick in this case is to setup Account Linking between their Firebase account and their Assistant account. This is done by setting up an OAuth2 server that has access to the Firebase accounts and will create authorization and refresh tokens that are given to the Assistant.
In the Action, you'll send the user to the Sign In helper, which will redirect them to your login page and send back a one-time auth code to the Assistant. The assistant will then use your OAuth2 server to exchange this code for auth and refresh tokens. Periodically it will use the refresh token to get new auth tokens.
When the user returns to the conversation through the Assistant, you'll be handed an auth token and you can use this to lookup the user. Since you also know their Facebook account, you can get the URL via however you planned to do so.
There are drawbacks to this method - it is very complicated, and setting up your own OAuth2 server is not for the faint of heart. You may be able to use something like Auth0 instead of Firebase Authentication to accomplish the same thing, but then you don't have the ease of access to the Firebase database.
Account linking to both Facebook and Google
In your Firebase account, however, you don't need to limit them to just logging into Facebook. You can have them use Firebase to record both the Facebook and Google accounts that they're using. This would "link" the two accounts together in your system.
With this, you don't need to setup an OAuth2 server. Instead, you can have the Assistant use Google Sign In for authentication. If the Google Cloud Project that Firebase is using and the Assistant are using are the same project, then once the user has logged in to your project's web page with their Google account, you'll get an identity token on the Assistant which will contain their Google ID. You can use this to match up with their Firebase account and get the Facebook ID and proceed from there.
But this is still a lot of work and kinda messy, jumping between systems.
Using just the Google Assistant (and maybe a web page)
If you're willing to make some assumptions about the devices your users are using, then you may be able to do it all just using the Assistant. The Assistant doesn't just run on the Google Home and other smart speakers, it also works on most current Android and iOS devices.
So you can detect if they have such a device available and, if they do and they're not currently on it, direct them to switch to that device when you need the URL.
If they don't have such a device available (perhaps because their version of Android is older), and you think this may be a common scenario, you may need to make another entry source available. This could be one of the solutions above, or you may want to just have a simple web page (done via Firebase Hosting and Firebase Functions, perhaps) where they log in using their Google account (so you get their ID) and you let them enter the URL. If you just need a URL - going through Dialogflow may be more complexity than you need.
I have been making Google Home apps, but now I want to make apps that are connected to Firebase server and DialogFlow API. How is it possible to integrate user authentication in an ios app to identify that user who is using Google Home with that login state?
For example, if I make a restaurant ordering app, I want any user to make a request through Google Home and the user can check his/her ordering history on an ios app.
A user logs in through an app and then how does google home detect that user as a logged in user? I have been searching how to implement this, but nothing hits.
You will need to implement account linking for Actions on Google. This will require two server-side components that you'll need to build:
You'll need to create an OAuth server that will allow the user to authenticate to your service (and use Firebase auth as a component of this) and authorize the Google Assistant to access your service. It does this by generating tokens that it hands to the Assistant.
Your Dialogflow fulfillment webhook will get this token passed to it as part of the conversation. It uses this token to determine which user is making the request and confirm it is valid.
There are OAuth services that are available that work with Google's auth that you should be able to fit in here, or you can write your own using Firebase Hosting and Firebase Cloud Functions. The Dialogflow webhook can, of course, be done using Firebase Cloud Functions.
We are developing a hybrid mobile app (code is written in HTML and runs on browser shell as a native app on the device). We need to authenticate the user against an external security manager. I've seen the Gmail App in iPhone which opens a browser to authenticate the user. We are also looking to do something of that sort. We just need to gather your thoughts on how authentication can be done with some external security manager in a mobile app.
Also I noticed that Dailymotion website was able to know if the user is authenticated with Facebook. This looks like a cross domain authentication.
Can you please share your thoughts on how Google and others have implemented it?
What you are looking for is OAuth and OpenID services to federate your login. Depending on the architecture of your system you can implement whichever one you like or even a hybrid of both.
Take a look at this link: Federated Login for Google Accounts
It provides all the useful information you need.
Hmm this question seems old but in case you haven't found an answer here's how I did it with my hybrid apps :
open url on client side with the provider's (facebook/twitter/instagram) url for login
the user logs in and is redirected to the server's callback url (my server is written in nodejs)
once I've got the access token from the provider. I save this token and then create a token for the client to reuse every time the user wants to access a protected ressource.
Download the apk and test it.
If this is what you're looking for you can checkout both the client side code at : https://github.com/malikov/Authenticate.me-client-cordova-ionic
And the server side code at : https://github.com/malikov/Authenticate.me-Node-Server
Cheers
I'm currently building a facebook app integration and got stuck on error 191: The specified URL is not owned by the application. (when trying to authenticate a user)
I realize the problem is the Site URL, which was not entered. However, my problem is the fact that Facebook will only redirect users to URI's on this domain - and my app will be hosted on more than one server.
It's a private admin app that will be sold to more than one client, and deployed to their server and domain. Thus, each client will have this app requesting redirect_uri back to their location, one will be installed on mysite1.com and another on mysite2.com
It appears that my only solution now is to create a separate app for each client (?)
Is there a way to request login redirection to an arbitrary URI ?
I don't think you can use that kind of a model with facebook apps.
the facebook app allows you to add multiple domain names in the console now but it is not feasible to enter every name of every client to your application setting.
maybe you should think of having one central system and sell subscription service to your clients