topic Re: Oauth2.0 authentication not showing login page in ArcGIS Maps SDK for Unity Questions

Oauth2.0 authentication not showing login page

MazenTalaat — Tue, 15 Nov 2022 10:00:27 GMT

Hello there,

I tried following the steps here: https://developers.arcgis.com/unity/authentication/ (Components and C# API) but didn't manage to show the login page on Windows and Android.

Anyone managed to make it work?

These are my steps:
1. Made an empty scene.
2. Added OAuthScene script to an empty gameObject and added the client ID, Redirect URI mobile(unitydl://mylink?scene1), desktop(random website) and service URL which is a link to a 3D layer.
3. Added also OAuthChallengeHandlersInitializer script to the same gameObject.

Also tried to add the same components to an ArcGIS Map gameObject but the login page never shows.

Thanks.

Re: Oauth2.0 authentication not showing login page

Matt_Nelson — Wed, 16 Nov 2022 16:12:24 GMT

Open one of our component examples and don't add the OauthScene script (that is for api worfklows)

At the bottom of the ArcGIS Map Component setup the oauth configuration entirely thru the inspector and let me know if you get it to work.

Re: Oauth2.0 authentication not showing login page

MazenTalaat — Thu, 17 Nov 2022 14:48:11 GMT

I opened the ComponentGlobalSample scene and configured the OAuth then added a private layer and chose the auth. for all layers:

Now it gives me an error related to the URI:

and here are my app. settings in the dev. dashboard:

Re: Oauth2.0 authentication not showing login page

Matt_Nelson — Fri, 18 Nov 2022 20:28:23 GMT

Ok we shouldn't be erroring like that for the api key in this case but if you add an api key does it work?

Re: Oauth2.0 authentication not showing login page

Matt_Nelson — Fri, 18 Nov 2022 20:30:16 GMT

I also just realized that your redirect URL probably doesn't make sense. On windows the localhost is typically used for the redicect since the local user needs to authenticate. It doesn't make sense to ask a remote server open the auth workflow.

Re: Oauth2.0 authentication not showing login page

MazenTalaat — Fri, 18 Nov 2022 21:54:50 GMT

Adding an API key will always load the layers and ignore the auth.

Re: Oauth2.0 authentication not showing login page

MazenTalaat — Fri, 18 Nov 2022 22:08:49 GMT

You are correct! I added http://localhost:1234/auth as you mentioned here: Automatic authentication in the background and now I can see the auth. page in the browser.

What about android? I tried using unity's deep link: unitydl://mylink?scene1 but it keeps saying URI is invalid.

Re: Oauth2.0 authentication not showing login page

MazenTalaat — Mon, 21 Nov 2022 22:17:05 GMT

Good news,

I tried to use the Authorization endpoints (https://www.arcgis.com/sharing/rest/oauth2/authorize?client_id=<APP_CLIENT_ID>&response_type=code&expiration=<N_SECONDS>&redirect_uri=<REDIRECT_URI>)

and it worked with all redirect links(HTTPS and unity deeplinks)! I think it's a bug in the SDK when reading the URI.

So here are the steps if anyone has the same issue:

1. Setup your application info. here: Applications Auth. and add unity's deep link for android example: unitydl://mylink?scene1
2. Enable deep link in unity (Enabling deep linking).
2. Open the URL using a script ("https://www.arcgis.com/sharing/rest/oauth2/authorize?client_id= <APP_CLIENT_ID>&response_type=code&expiration=<N_SECONDS>&redirect_uri=<REDIRECT_URI>") (don't forget to add your info. and remove the < >, more info. here: Mobile Endpoints ).
3. If everything is correct, your default browser will open asking you to log in.
4. After logging in the REDIRECT_URI which is a deep link will make you return to the app.
5. You can split the deep link and extract the auth. code which will be used to get the access token.
6. Use unity's web request with this URL to get the access token ("https://www.arcgis.com/sharing/rest/oauth2/token?client_id=<CLIENT_ID>&redirect_uri=<REDIRECT_URI>&grant_type=authorization_code&code=<CODE>")
7. The response will look like this: { "access_token":"{token}", "expires_in":1800, "username":"{user-name}", "refresh_token":"{refresh-token}" }.

Regards.