Azure Active Directory B2C navigation failures using Xamarin Forms - azure

using the built in sign-up and sign-in policy with azure AD, the user can signup and the account gets created, but the UI never returns back to the app. It stays here
The same issue happens when testing the user flow in the azure portal.
I'm not sure what to do or where to go from here on testing this?
There are other little funny quirks that I notice also. When the cancel button is clicked the UI never redirects back to the sign in page. the loading progress bar moves across as if something should be happening but it never goes back to the previous page.
Same thing when trying to go forgot password page.
EDIT
here is a repo https://github.com/champcbg/AzureAdB2CTest with azure ad credentials stripped out that follows these instructions https://learn.microsoft.com/en-us/xamarin/xamarin-forms/data-cloud/authentication/azure-ad-b2c the sign in and sign up work successfully i can see the results in azure, but the hand off never is given back to the android app.
the code in the green block is executed and that is how the sign-in and sign-up pages are shown. after either action the code never comes back to line 79 (red arrow).
but if the back button (on the phone) is pressed control is given back to the app, the code falls into the exception block as a "authentication_canceled" event.

Finally got it working. I was never able to solve the issue of the app coming back from the await. I am leaning toward the error being that the active page was never not found again. that is only an assumption that can not be confirmed.
https://github.com/Azure-Samples/active-directory-b2c-xamarin-native
Following the code example for the project link above solved the problem. The key differences from the original example are
Authentication was extracted to a service not bound to button clicks, which was actually my desired path anyway or in view models.
Parent Window locator service which is used in the android project
The complete solution was built by following these instructions https://learn.microsoft.com/en-us/xamarin/xamarin-forms/data-cloud/authentication/azure-ad-b2c for creating the Azure AD resources and this for actually implementing the xamarin app https://github.com/Azure-Samples/active-directory-b2c-xamarin-native

Related

Azure B2C Custom policyAn exception occuring while implementing the combinedsignup&signin & invitationURL based signup&signin

I am trying to create a setup where a user can
signup & sign in directly from the combined signup&Signin page
Signup&signin from the invitation link.
Point one is working perfectly fine using the following files
BaseFile
ExtensionFile
RPFile
For point 2 I have created
SignupinviteRPFile
Now, when I click on the invitation URL which is in the following format
https://mytenant.b2clogin.com/mytenant.onmicrosoft.com/B2C_1A_signup_invitation/oauth2/v2.0/authorize?client_id={clientID}&nonce=ca00379642b94aa693a80b66783aa010&redirect_uri=https%3A%2F%2Fmytenant-dev.azurewebsites.net%2Fsignup%2Fuser-invite&scope=openid&response_type=id_token&id_token_hint={SignedJWTToken}
I do get the signup page with readonly emailID. But once I fill all the information and click "Create" it gives me
Following issue:
Sorry, but we're having trouble signing you in.
We track these errors automatically, but if the problem persists feel free to contact us. In the meantime, please try again.
Correlation ID: 3a9f35e6-51e1-40b7-9ee9-d9c8081ff8d6
Timestamp: 2021-02-03 11:07:20Z
AADB2C: An exception has occurred.
Observations:
The account gets created in the local AD and I can see the user's entry
Following are the three calls from the network logger
/SelfAsserted?tx=StateProperties=eyJUSUQiOiIzYTlmMzVlNi01MWUxLTQwYjctOWVlOS1kOWM4MDgxZmY4ZDYifQ&p=B2C_1A_signup_invitation
2./confirmed?csrf_token=bThiL2hJNXZ4ZFBwSXZ3ZzRLd1lVUExQV2V1T3EzVkNBYUloaEpqWk5lYTBXczAvUW9oSjJMVXBEWWhrenZ1Ymc2SkJNL3N5N0UxNzZYNHBDVDdsaWc9PTsyMDIxLTAyLTAzVDExOjA2OjQ2LjU5NTgzMzVaO2tuVzlHdzdMTDZ1QzMyT1JmRGNZbGc9PTt7IlRhcmdldEVudGl0eSI6IkxvY2FsQWNjb3VudFNpZ25VcFdpdGhSZWFkT25seUVtYWlsIiwiT3JjaGVzdHJhdGlvblN0ZXAiOjN9&tx=StateProperties=eyJUSUQiOiIzYTlmMzVlNi01MWUxLTQwYjctOWVlOS1kOWM4MDgxZmY4ZDYifQ&p=B2C_1A_signup_invitation&diags=%7B%22pageViewId%22%3A%22e25ebe04-1601-460d-b3a8-1d958c8155b8%22%2C%22pageId%22%3A%22SelfAsserted%22%2C%22trace%22%3A%5B%7B%22ac%22%3A%22T005%22%2C%22acST%22%3A1612350407%2C%22acD%22%3A3%7D%2C%7B%22ac%22%3A%22T021%20-%20URL%3Ahttps%3A%2F%2Fmytenant.b2clogin.com%2Fstatic%2Ftenant%2Ftemplates%2FAzureBlue%2FselfAsserted.cshtml%3Fslice%3D001-000%26dc%3DPNQ%22%2C%22acST%22%3A1612350407%2C%22acD%22%3A50%7D%2C%7B%22ac%22%3A%22T019%22%2C%22acST%22%3A1612350407%2C%22acD%22%3A8%7D%2C%7B%22ac%22%3A%22T004%22%2C%22acST%22%3A1612350407%2C%22acD%22%3A2%7D%2C%7B%22ac%22%3A%22T003%22%2C%22acST%22%3A1612350407%2C%22acD%22%3A2%7D%2C%7B%22ac%22%3A%22T035%22%2C%22acST%22%3A1612350410%2C%22acD%22%3A0%7D%2C%7B%22ac%22%3A%22T030Online%22%2C%22acST%22%3A1612350410%2C%22acD%22%3A0%7D%2C%7B%22ac%22%3A%22T017T010%22%2C%22acST%22%3A1612350438%2C%22acD%22%3A1075%7D%2C%7B%22ac%22%3A%22T002%22%2C%22acST%22%3A1612350440%2C%22acD%22%3A0%7D%2C%7B%22ac%22%3A%22T017T010%22%2C%22acST%22%3A1612350438%2C%22acD%22%3A1077%7D%5D%7D
3.client/perftrace?tx=3a9f35e6-51e1-40b7-9ee9-d9c8081ff8d6&p=null
3. Following URL uses GET Method
https://mytenant.b2clogin.com/mytenant.onmicrosoft.com/B2C_1A_signup_invitation/api/SelfAsserted/confirmed?csrf_token=bThiL2hJNXZ4ZFBwSXZ3ZzRLd1lVUExQV2V1T3EzVkNBYUloaEpqWk5lYTBXczAvUW9oSjJMVXBEWWhrenZ1Ymc2SkJNL3N5N0UxNzZYNHBDVDdsaWc9PTsyMDIxLTAyLTAzVDExOjA2OjQ2LjU5NTgzMzVaO2tuVzlHdzdMTDZ1QzMyT1JmRGNZbGc9PTt7IlRhcmdldEVudGl0eSI6IkxvY2FsQWNjb3VudFNpZ25VcFdpdGhSZWFkT25seUVtYWlsIiwiT3JjaGVzdHJhdGlvblN0ZXAiOjN9&tx=StateProperties=eyJUSUQiOiIzYTlmMzVlNi01MWUxLTQwYjctOWVlOS1kOWM4MDgxZmY4ZDYifQ&p=B2C_1A_signup_invitation&diags=%7B%22pageViewId%22%3A%22e25ebe04-1601-460d-b3a8-1d958c8155b8%22%2C%22pageId%22%3A%22SelfAsserted%22%2C%22trace%22%3A%5B%7B%22ac%22%3A%22T005%22%2C%22acST%22%3A1612350407%2C%22acD%22%3A3%7D%2C%7B%22ac%22%3A%22T021%20-%20URL%3Ahttps%3A%2F%2Fmytenant.b2clogin.com%2Fstatic%2Ftenant%2Ftemplates%2FAzureBlue%2FselfAsserted.cshtml%3Fslice%3D001-000%26dc%3DPNQ%22%2C%22acST%22%3A1612350407%2C%22acD%22%3A50%7D%2C%7B%22ac%22%3A%22T019%22%2C%22acST%22%3A1612350407%2C%22acD%22%3A8%7D%2C%7B%22ac%22%3A%22T004%22%2C%22acST%22%3A1612350407%2C%22acD%22%3A2%7D%2C%7B%22ac%22%3A%22T003%22%2C%22acST%22%3A1612350407%2C%22acD%22%3A2%7D%2C%7B%22ac%22%3A%22T035%22%2C%22acST%22%3A1612350410%2C%22acD%22%3A0%7D%2C%7B%22ac%22%3A%22T030Online%22%2C%22acST%22%3A1612350410%2C%22acD%22%3A0%7D%2C%7B%22ac%22%3A%22T017T010%22%2C%22acST%22%3A1612350438%2C%22acD%22%3A1075%7D%2C%7B%22ac%22%3A%22T002%22%2C%22acST%22%3A1612350440%2C%22acD%22%3A0%7D%2C%7B%22ac%22%3A%22T017T010%22%2C%22acST%22%3A1612350438%2C%22acD%22%3A1077%7D%5D%7D
Gives following message:
We can't sign you in
Your browser is currently set to block JavaScript. You need to allow JavaScript to use this service.
To learn how to allow JavaScript or to find out whether your browser supports JavaScript, check the online help in your web browser.
And the last call uses POST method
https://mytenant.b2clogin.com/mytenant.onmicrosoft.com/B2C_1A_signup_invitation/client/perftrace?tx=3a9f35e6-51e1-40b7-9ee9-d9c8081ff8d6&p=null
gives 404 error message
Basically, after the signup from the invitation url I am not able to signin to my application. I am not sure if there is any conflict between the two RP files or If I am missing anything.
The problem is here
https://github.com/rbagree/B2CSignupSigninInvite/blob/main/signup_invitation.xml#L63
The log shows it cannot find this key. Just remove this entire technical profile as it should already exist in your base file.

Why does the popup for b2c_1_edit_profile disappear?

I have b2c_1_susi working. I am able to login. I'm using example code. However edit profile user flow is not working. I have the user flow created in the same fashion as susi. If I use redirect my app navigates back to home page. If I use popup, the popup comes up but then disappears. This is what I am getting in the console log.
Strangely, I ended up deleting and recreating the registration and it started working.
Make sure you add user attributes to your edit profile. You may already have user attributes on your sign up sign in profile but they do not get transferred over to the edit profile automatically

How can I get my app using Instagram Basic Display API pass app review?

This is now the 4th time I am sending my app for review. I want to use Instagram Basic Display API and therefore require instagram_graph_user_media permission to access media (and incidentally instagram_graph_user_profile). I have 2 test users, my personal IG account with a bunch of pics and a test user that I created with an empty feed. I can login with both users. But when the Instagram app reviewer is logging in, my app can't access their media. I successfully retrieve the access token but when comes the time to call the Graph API here is what happens:
https://graph.instagram.com/me/media?fields=media_type,media_url,permalink,thumbnail_url&access_token=IGQV....
returns
{"error":{"message":"Application does not have permission for this action","type":"IGApiException","code":10,"fbtrace_id":"A99vuaAC41DSvlt0Hxvcly-"}}
Here is an update from my latest app review rejection. This time, I added the code above to catch code 10 errors and if I did, try to fetch the user profile data. Guess what, that failed with a code 10 error as well. So, whatever the app reviewer is doing, it is granting access to neither the profile or the media API.
Another update. The reviewer I had this time sent me two screenshots, one of the Instagram login screen and one of my app's error screen. Interestingly, the Instagram login screen had a strange Instagram username that I have never heard of before. It certainly wasn't my test Instagram account. So I now have evidence of them both using my test account and their own special test accounts.
The question in my mind now is, is there something special about their test accounts that ruins the process? After all, I have not added them to be testers of my app, although if someone who hasn't accepted my test invite tries to log in, it errors in an entirely different way.
I am running out of ideas here. My next thing to try is to exchange the short-lived access token for a long-lived token, as well as trying to use the new access token to server-side (where I exchange the code for the access token) to check if the access token ever works or if it is created with insufficient access.
This whole process is a nightmare.
I will put this as an answer because we have dealt with this thing now for over 2 weeks and quite a few submissions. I think you should remove the bounty though.
What you have done so far:
Created and approved IG test accounts
Double and triple checked parameters & permission
Tested your app a dozen times
Created dozens of screencast spoon-feeding, making sure a 5 yo kid would be able to test your app
Having the above, I am sure you noticed:
The reviewer will add a generic text as 'reject reason.'
The reviewer will submit the irrelevant and out-of-scope screenshot(s)
The reviewer will not test with the Instagram credentials provided.
Maybe he WILL test with the Instagram test credentials provided (in fact you're left in the dark as to how they actually simulate IG access)
The reviewer will claim he's unable to sign in using provided credentials
The reviewer claims having tested, but you see no traces in your DB whatsoever (would be smart to do so, to know whether they're actually doing something or not, up to a certain point)
Conclusion
You have to know that your app is at the reviewer's mercy and approval sometimes arbitrarily. Eventually, you will find your app being approved while having submitted it to change at all.
This should be obvious but when you are so deep in the hole and try to think why your app is being rejected you stop thinking logically.
Here is what I did:
Create a dummy Instagram account.
Link this account to an email provider that doesn't require a phone/another way of verification (I used ProtonMail).
Use an Instagram Tester account (do the whole process).
In your instructions let the reviewer that they need to log in to ProtonMail to get the Instagram confirmation code; since they will do login from an unknown location (if you could simulate the above in your screencast that would be great, but I didn't do it).
If you apply for both instagram_graph_user_profile and instagram_graph_user_media you need to do this in 2 steps individually.
The second step getting the instagram_graph_user_media permission is much easier.
I lost a couple of days and tried everything and anything before I realized that.
Hopefully, this should help someone that is having the same problem.
The app was approved the first time.
It is possible that the App Reviewer is unchecking the instagram_graph_user_media access in the authentication screen, thus giving you only access to instagram_graph_user_profile. I had the exact same error code being thrown back my way, and I did the following:
Catch the error code 10 error
Try to fetch the https://graph.instagram.com/me?fields=account_type,username&access_token=${accessToken}
If that works, then display a page that makes it clear that you have successfully connected to the Instagram User Profile (and here is your username and account type) but, if the user wants to do X they also need to approve media access, and here is a button to go and reauthenticate again.
See the image I have below.
Now, I did the above and I still got an app review failure of code 10, which means that the second fetch to only the username and account type failed, and I do not know how they could possibly have managed to do that.
They admitted issue but not fixed yet: https://developers.facebook.com/support/bugs/543633182940083/
To get approved for Instagram Basic Display:
create a Facebook test user
create an Instagram account with that FB test user
give the credentials (email/address) of the Facebook test user to the reviewer in the Instagram Basic Display submission
Basic Display API review process is so bad its beyond words. I have been hitting the brick wall of their rejections for 3 weeks and almost got bald by pulling my hair in frustration. You really have to read between the lines to get a hint of what they are doing.
Turns out what the reviewer was doing is selecting "Continue with Facebook" on the Instagram Login screen and going that route (via Facebook login) instead of entering the instagram credentials directly. Only once I realized that I was able to pin point the problem. Interestingly though testing on the Simulator was fine but the problem only became apparent once I tested on the real device. The reason - simulator doesn't have neither Facebook app nor Instagram app installed, so it behaves differently versus the device where these apps get involved in the flow via deep linking.
The bottom line:
Test on real device.
Make sure to test both the direct Instagram log in and the "Continue with Facebook" option.
Test on the device with and without the Facebook and/or Instagram app installed.
Make sure to use brand new instance of WKWebView with non persistent data store to bring up the login screen, so that it doesn't have any cookies from previous logins:
let configuration = WKWebViewConfiguration()
configuration.websiteDataStore = WKWebsiteDataStore.nonPersistent()
let webView = WKWebView(frame: .zero, configuration: configuration)
Pray the God of your choosing.

MSAL redirectLogin and B2C: tokenReceivedCallback not always called

I setup MSAL clientside authentication, and it works in around 80% of the cases I would say, in the rest of them, it seems the tokenReceivedCallback is not called. Whenever this happens, login stops working until browser is closed...
Im having some trouble finding examples of how to use MSAL with the redirectLogin, it seems all examples just use the "loginPopup"(which IMHO is not very user friendly, I tried it and my users complained about login popup being lost behind other windows all the time).
Does anybody have an example of how MSAL should be setup with B2C and redirectLogin? Or a suggestion of how I should troubleshoot this issue?
Or at least an overview of how this flow is supposed to work?(Im having trouble udnerstanding how the callback is triggered after a redirect...)
This comment in this issue seemed very promising, but it seems the sample has been removed, or is this methid being deprecated?
https://github.com/Azure-Samples/active-directory-b2c-javascript-msal-singlepageapp/issues/10#issuecomment-327204996

Using 'Facebook login' with C# SDK , plus ASPNET Membership Integration

I followed the tutorial page on doing the basic Facebook authentication and login, but it seems to create a redirection loop.
The parent page sets up a listener which, on authResponseChange, redirects to a handler.
The handler then gets the token and redirects back to the parent page
Which then sets up a listener, logs in, triggers authResponseChange and redirects to the handler. Etcetera...
Have I misunderstood something, or is this a bug or expected behaviour? I need to find a way to NOT have this happening.
Secondly, the documentation for 'Using Facebook & ASP.NET Membership for Authentication' is obviously not ready, but I would appreciate some pointers on how to do you would advise doing it.
EDIT: I presume that both of these issues would be fixed with the same solution, ie - getting the handler to redirect to a new page which creates a new ASPNET Membership user based on the facebook credentials - however I am unsure how to do this as the documentation for this section just says TODO. Any pointers? Would you need to just extend the Profile system to store the access token and facebook ID ? Or am I on totally the wrong track?
On another demo here some folks said it was a problem with ie9/chrome and cookies on localhost. Pointing to 127.0.0.1 and run it on iis it fixed the issue for me.

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