Background Access to microsoft Graph API - azure

i'm developing a single page application for a costumer. I need to create a script that allows me to access to my app without user interaction. for example i press a button and the script automatically log me in (i know username and password of the user). The user don't need to see the window where i put username and password.
Is it possible? at the moment my login script is:
const authResult = await msalClient.loginPopup(msalRequest);
localStorage.setItem('msalAccount', authResult.account.username);
// Get the user's profile from Graph
user = await getUser();
// Save the profile in session
localStorage.setItem('graphUser', JSON.stringify(user));
if(accountAttivo!=""){
setActiveUser();
}
updatePage(Views.home);

Looks like you are trying to follow the ROPC flow as you are using username and password credentials in your script, access token must be fetched from AAD before we call getUser(). To fetch any details using graph api we need to have access token please go through the article which helps you more in understanding.
Let's say we wrote a function called getAccessToken() to fetch the token. Once the token fetched and is saved in the sessions, following code can be used in getUser() to fetch the user profile.
const options = {
authProvider,
};
const client = Client.init(options);
let res = await client.api('/me')
.get();
Calling both the functions getAccessToken() and getUser() in the code flow of the button click event should bypass the user interaction with the application to enter credentials.
NOTE: Microsoft does not recommend to user ROPC flow. This most scenarios, more secure alternatives are available and recommended.
This flow requires a very high degree of trust in application, and
carries risks which are not present in other flows. You should only
use this flow when other more secure flows can’t be used.

Related

React MSAL Library msal-react : Issue in logging out in B2C application

I am using msal-react in my single page B2C application to sign in. I used the loginRedirect() function to login.
const { instance } = useMsal();
let {idToken} = await instance.loginRedirect();
This is allowing me to login successfully.
After login when I check if the user is authenticated using the following function it is returning true.
import {useIsAuthenticated,} from "#azure/msal-react";
const isAuthenticated = useIsAuthenticated();
That means that the user is authenticated.
But when I use the logoutRedirect function to logout the user. it is properly getting redirected to the logout-redirect-uri. But, it is still persisting the session somehow. Again if I try to login it is not asking for the credentials. Instead, it is taking me to the screen when it will ask me to sent the token to my registered mobile number.
await instance.logoutRedirect();
Can anybody suggest a way to remove the entire session and ask the user to enter the credentials again after logging out?

Setting up an Application with Azure for use with Graph API outlook calendars

I'm aware that Graph API has a nice nuget package and I am confident on the code side of things, but my understanding is that I need to have the application set up in Azure and while there is a lot of documentation about this in general, I find it quite dense and I'm not confident I have the specifics down for how I need to set this portion up.
What I need my application to do is access an outlook calendar of a specific user that I own, read, search, add, delete and update calendar items. The integration assistant seems to suggest I need to configure a URI redirect and configure api permission. The default persmission is User.Read on graph API and if I try to add a permission, office 365 management seems like it might be the one I need except it specifically says just retrieving user information and nothing mentions outlook anywhere.
I need to know more or less the minimum steps in setting up the application in Azure to write a C# application that can make changes to outlook for a user.
need my application to do is access an outlook calendar of a specific user
Does it mean you need your app to have the abiltity to modify the callendar of any user you owned? If not, then it means you need your application to provide a sign in module and let users sign in, then the users can get authentication to call graph api and manage their own calendar, since this scenario, users give the delegate api permission, so they can't manage other users' calendar, so I don't think this is what you want.
If so, then you should use client credential flow to generate access token to call graph api. I think you know that when you want to call graph api, you have to get an access token which has correct permission first.
Ok, then let's come to the api permission, when you go to api document of the Calendar. You will see permissions like screenshot below:
Application permission type is suitable for client credential flow. And after viewing all the apis, you will find that they all need Calendars.ReadWrite except those not supporting Application type.
Then let's go to azure portal and reach Azure Active Directory. You need to create an Azure ad application and give the app Calendars.ReadWrite permission, then give the Admin consent.
Then you also need to create a client secret, pls go to Certificates & Secrets and add a new client secret, don't forget to copy the secret after you create it.
Now you've done all the steps. No need to set a redirect url, because you don't need to let the user to sign in your application. Let's see client credential flow document, it only require client_id, client_secret to generate access token.
Or in the code, you may use SDK like this :
using Azure.Identity;
using Microsoft.Graph;
public async Task<IActionResult> Index()
{
var scopes = new[] { "https://graph.microsoft.com/.default" };
var tenantId = "your_tenant_name.onmicrosoft.com";
var clientId = "azure_ad_app_id";
var clientSecret = "client_secret";
var clientSecretCredential = new ClientSecretCredential(
tenantId, clientId, clientSecret);
var graphClient = new GraphServiceClient(clientSecretCredential, scopes);
var calendar = new Calendar{ Name = "Volunteer" };
var events = await graphClient.Users["user_id_which_is_needed_to_list_calendar_events"].Events.Request()
.Header("Prefer","outlook.timezone=\"Pacific Standard Time\"")
.Select("subject,body,bodyPreview,organizer,attendees,start,end,location")
.GetAsync();
return View();
}

How to get user details from an Azure AD token?

Using this tutorial as a guide: https://github.com/Azure-Samples/ms-identity-javascript-angular-spa-aspnetcore-webapi
In the web api we need to obtain the users details (for audit purposes we want to record the details of the user in the database).
In the web api, is there a way to decode the azure token to obtain the user details? Or we could simply pass the user email from the client browser in each request also be feasible (this is easily accessible using the MSAL library for Angular)
Rather than trying to decode the token to get the current users email, the base controller exposes the current user as detailed here;
https://learn.microsoft.com/en-us/aspnet/core/migration/claimsprincipal-current?view=aspnetcore-2.1
So simply using the following I can obtain the user associated with the current request;
string email = User.FindFirstValue(ClaimTypes.Email);
You could decode token to get some information of the signed-in user such as username and email, try token with https://jwt.io/.
If you want more details, you can use MS Graph. Me means current signed-in user. Try with following Graph SDK or HttpClient sample.
GraphServiceClient graphClient = new GraphServiceClient( authProvider );
// or graphClient.Users[user-object-id].Request().GetAsync(); for a specific user
var user = await graphClient.Me
.Request()
.GetAsync();

Azure App Service Easy Auth

I have an Azure mobile backend set up with easy auth for facebook and google authentication and it works as expected.
Every time a user signs in with any of the supported providers, I want to be able to verify if it's a new user or not (e-mail not in database), without make an additional call from client. Is this possible?
Every time a user signs in with any of the supported providers, I want to be able to verify if it's a new user or not (e-mail not in database), without make an additional call from client. Is this possible?
As far as I know, we couldn't directly verify if it's a new user or not.
No matter you use server flow or client flow, easy auth will just return access token for the client to access the mobile backend resources, it will not check the user is new or old.
If you want to achieve this requirement, you need write your own logic.
You could write codes after the user login successfully.
For example, facebook login.
If you the use have login successfully,you could call GetAppServiceIdentityAsync extension method to get the login credentials, which include the access token needed to make requests against the Facebook Graph API.
// Get the credentials for the logged-in user.
var credentials =
await this.User
.GetAppServiceIdentityAsync<FacebookCredentials>(this.Request);
if (credentials.Provider == "Facebook")
{
// Create a query string with the Facebook access token.
var fbRequestUrl = "https://graph.facebook.com/me/feed?access_token="
+ credentials.AccessToken;
// Create an HttpClient request.
var client = new System.Net.Http.HttpClient();
// Request the current user info from Facebook.
var resp = await client.GetAsync(fbRequestUrl);
resp.EnsureSuccessStatusCode();
// Do something here with the Facebook user information.
var fbInfo = await resp.Content.ReadAsStringAsync();
}
Then you could check the database according to the user information.
More details about how to get user information in server side, you could refer to How to: Retrieve authenticated user information.

Azure Active Directory Logout with ADAL library

I used the my Azure Active Directory to protect my web API and I create a native application in the Azure management portal. This native application is basically a MVC web application and I use the ADAL library to get the token and call the api with that token. The code I used to get the token is shown below:
AuthenticationContext ac = new AuthenticationContext(authority);
AuthenticationResult ar = ac.AcquireToken(resourceID, clientID, redirectURI);
string accessToken = ar.AccessToken;
Now I need to logout and switch to another user but somehow the user credentials are remembered by the system. I clear the token cache in the authentication context and post logout api request as follows where *** is my tenant ID.
//Log out after api call
ac.TokenCache.Clear();
string requestUrl = "https://login.windows.net/***/oauth2/logout";
var client = new HttpClient();
var request = new HttpRequestMessage(HttpMethod.Get, requestUrl);
var response = await client.SendAsync(request);
The api call succeeds but the logout doesn't work.
What should I do to logout and switch to another user?
I don't think this would work. You would need to redirect the user to logout URL for logout to work.
Here's how you can create a logout URI:
https://login.microsoftonline.com/{0}/oauth2/logout?post_logout_redirect_uri={1}
Where:
{0} - Fully qualified name of your Azure Active Directory e.g. yourad.onmicrosoft.com or tenant id.
{1} - The URL of your application where a user must be redirected back after the logout is complete. This should be properly URL encoded.
If you goal is to sign in a s a different user, you don't strictly need to log out the first user from its session with Azure AD. You can pass PrompBehavior.Always in your AcquireToken call, so that you will be guaranteed to prompt the user with a clean credential gathering UX.
Note: if you want to wipe every trace of the first user from the app you can keep the cache cleanup code you have. ADAL allows you to keep tokens for multiple users tho, hence if your app as multi-user functions this might be useful - the catch is that if you do so, at every AcquireToken you'll have to also specify which user you want a token for or ADAL won't know which one to return. If you don't need multiple users at once, the cache cleanup + PromptBehavior.Always remains the easiest path.
You can do this for clear cache :
CookieManager cookieManager = CookieManager.getInstance();
cookieManager.removeAllCookie();
CookieSyncManager.getInstance().sync();
mAuthContext.getCache().removeAll();

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