how to get facebook user access token using API only in c# - facebook-graph-api

I am looking for a code where I can get the User access token(Not App token) from a console application where I can not have a browser, in C#. Is there any API which I can use?

Related

How to Store Facebook App Access Token in Mobile App Client?

To request the FB app events API, I would need to use an app access token.
It says in the doc "The Facebook SDK automatically logs app installs, app sessions, and in-app purchases."
And "Do not store your app access token on the client" also "Again, for security, app access token should never be hard-coded into client-side code, doing so would give everyone who loaded your webpage or decompiled your app full access to your app secret, and therefore the ability to modify your app. This implies that most of the time, you will be using app access tokens only in server to server calls."
Then how can I make a request from the app SDK if I am not storing/hard coding the app access token in the mobile app code?
Documentation is here: https://developers.facebook.com/docs/marketing-api/app-event-api/

Facebook Places Search using Client Token

This page claims that you can access the Places Graph functionality without having a logged-in user:
You make your calls using a Client Token (from the client), and an App Access Token (from the server).
The documentation regarding Client Tokens says:
The client token is an identifier that you can embed into native mobile binaries or desktop apps to identify your app. The client token isn't meant to be a secret identifier because it's embedded in apps.
This sounds like exactly what I want--I am trying to build a website that allows users to search for Facebook places. I need to be able to build the list using an AJAX request from the client side.
I can't for the life of me find any documentation on using the Client Token to make such a request.
Please note that I cannot use an App Token because this will be deployed to a website, and Facebook specifically says not to use App Tokens in that context.
I've tried using the Client Token directly as the access_token, but then I get Invalid OAuth access token.
How can I use the Client Token to make a Places Graph API call directly to Facebook's API from the client's browser?
Note: I realize that I could send the request to my own server, then relay that request from my server to Facebook, but that is not an optimal solution for me.
In case anyone is still struggling with this like I was. You just need to use the appId and client token joined with a pipe. So "appId|clientToken".

Facebook marketing api acess token

I am trying to get my ( OWN ) ad accounts data using facebook insights api. the very first step is getting access token. until now i was using access token generated by graph api explorer by extending it lifetime manually. now what is the programmatic way of getting access token. i have referred this documntation https://developers.facebook.com/docs/facebook-login/manually-build-a-login-flow/
This is only possible when i am using some sort of front-end or browser interface to open up login dialog but i am using a python script. its not possible to open up the login dialog. ho do i get my access token .
as far as i understand login dialog popu up when using user access token. i think i need to use app access token . are both same?
Follow the step here:
https://developers.facebook.com/docs/facebook-login/access-tokens/#apptokens
You can get the access token through the sample code
But reminded that because this request uses your app secret, it must never be made in client-side code or in an app binary that could be decompiled.

Retrieve Facebook profile from Xamarin client

I would like to get basic user information from Facebook after the user has logged in.
I've looked at the documentation in How to: Work with authentication and under the "How to: Retrieve authenticated user information" section, it shows how to do it from the .NET backend code by using an HttpClient to make the call with the AccessToken:
var fbRequestUrl = "https://graph.facebook.com/me/feed?access_token="
+ credentials.AccessToken;
Since the mobile client has the accessToken that we get from MobileServices, can the client make the call directly to a Facebook endpoint, or does the client SDK provide us with any built-in functionality?
I've been following the Xamarin.Forms Sport project and the way they get the user information from Google is by hard-coding the Google endpoint and making a call to get the user info.
Note: Xamarin.Forms Sport uses Mobile Services, not Mobile App, so not sure if that makes any difference.
It sounds like you're doing the server-directed login: where you are making a call to your backend to do the login dance with Facebook. In this, your client application is making a GET call to .auth/login/facebook, which opens up a browser or the Web Authentication Broker where you enter your credentials. The end result is you will receive a Zumo access token (different from Facebook access token).
You cannot use the Zumo access token to access Facebook APIs by itself. In the "How To:" you linked, we show you how to use GetAppServiceIdentityAsync from the backend to get the Facebook access token. This is possible because you have stored your Facebook client ID via portal, which is available to the backend.
The advantage of doing auth like this was that you don't have to deploy your Facebook Client Id with your mobile apps. If you wanted to access the Facebook APIs from the client, though, you'll need to get the Facebook token to the client.
Few ways I can suggest:
Call .auth/me from your client. The response will give you a JSON object you can parse that should include the FB token associated with your Zumo token.
Write a custom API with [Authorize] attribute set that will perform GetAppServiceIdentityAsync and respond with the value of the facebook access token. You can then parse the response from your client. This is basically what .auth/me does, but you can write it to give back only your FB access token.
Use the Facebook .NET SDK http://facebooksdk.net/ to do client-directed login. You will get a Facebook token on your client, and then you can use our LoginAsync(Facebook, access_token) method to get a Zumo token so that your client can access both Facebook and your Mobile App backend. The disadvantage, as I mentioned before, is that you'll have to deploy your FB Client ID with your app.

Facebook App, Wrong access token

I'm using the Graph Explorer, and I'm choosing my application from the Application Drop Down List.
I'm having to access this photo https://graph.facebook.com/399744030064153.
When i choose the application, facebook automatically the access token for the app and I'm being able to view the photo details.
However, in my php application, when i do
$access_token=$facebook->getAccessToken();
$photoObj=$facebook->api("https://graph.facebook.com/399744030064153?access_token=$access_token");
Its not working, from what i know, the access token is wrong because I'm trying to echo the access token and I check it. Thus, the problem is the access token
Does someone has an idea??
The Graph API explorer automatically generates a user access token, which gives the app the ability to act on a user's behalf. - in this case, your own account.
The getAccessToken() method in the SDK, if used standalone (i.e not as part of the documented Auth flow) will return an App Access Token, which although usable with the API won't be able to view any content unless it's Publicly visible