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Call an Azure AD protected Web API in an AngularJS Single Page App

Senast uppdaterad: 2016-11-29
Deltagare:
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This sample demonstrates the use of ADAL for JavaScript for securing an AngularJS based single page app, implemented with an ASP.NET Web API backend, that calls another ASP.NET Web API using CORS.

ADAL for Javascript is an open source library. For distribution options, source code, and contributions, check out the ADAL JS repo at https://github.com/AzureAD/azure-activedirectory-library-for-js.

For more information about how the protocols work in this scenario and other scenarios, see Authentication Scenarios for Azure AD.

How To Run This Sample

Getting started is simple! To run this sample you will need: - Visual Studio 2013 - An Internet connection - An Azure subscription (a free trial is sufficient)

Every Azure subscription has an associated Azure Active Directory tenant. If you don't already have an Azure subscription, you can get a free subscription by signing up at https://azure.microsoft.com. All of the Azure AD features used by this sample are available free of charge.

Step 1: Clone or download this repository

From your shell or command line: git clone https://github.com/Azure-Samples/active-directory-angularjs-singlepageapp-dotnet-webapi.git

Step 2: Register the To Go API Service with your Azure Active Directory tenant

  1. Sign in to the Azure management portal.
  2. Click on Active Directory in the left hand nav.
  3. Click the directory tenant where you wish to register the sample application.
  4. Click the Applications tab.
  5. In the drawer, click Add.
  6. Click "Add an application my organization is developing".
  7. Enter a friendly name for the application, for example "To Go API", select "Web Application and/or Web API", and click next.
  8. For the sign-on URL, enter the base URL for the sample, which is by default https://localhost:44327/.
  9. For the App ID URI, enter https://<your_tenant_name>/ToGoAPI, replacing <your_tenant_name> with the name of your Azure AD tenant. Save the configuration.

All done! Before moving on to the next step, you need to find the App ID URI of your api.

  1. While still in the Azure portal, click the Configure tab of your application.
  2. Find the App ID URI value and copy it to the clipboard.

Step 3: Configure the To Go API to use your Azure Active Directory tenant

  1. Open the solution in Visual Studio 2013.
  2. In the ToGoAPI project, open the web.config file.
  3. Find the app key ida:Tenant and replace the value with your AAD tenant name.
  4. Find the app key ida:Audience and replace the value with the App ID URI you copied from the Azure portal.
  5. Also in the ToGoAPI project, open the file Controllers/ToGoListController.cs. In the [EnableCors...] attribute, enter the location of the To Do SPA client. By default it is https://localhost:44326. Make sure to omit the trailing slash.
  6. In the TodoSPA project, open the file App/Scripts/App.js and locate the declaration of the endpoints object.
  7. Enter a mapping of the To Go API endpoint location to its resource identifier, or App ID URI. The name of the property of the endpoints object should be the location of the To Go API. By default, it is https://localhost:44327/. The value of this property should be the App ID URI you copied from the portal, e.g. https://<your_tenant_name>/ToGoAPI.
  8. Don't worry about the other configuration values in this file yet, we'll come back to that in a second.
  9. Also in the TodoSPA project, open the file App/Scripts/toGoListSvc.js. Replace the value of the apiEndpoint variable with the location of your To Go API. By default, it is https://localhost:44327/.

Step 4: Register the To Do Single Page Application with your Azure Active Directory tenant

  1. Sign in once again to the Azure management portal.
  2. Click on Active Directory in the left hand nav.
  3. Click the directory tenant where you wish to register the sample application.
  4. Click the Applications tab.
  5. In the drawer, click Add.
  6. Click "Add an application my organization is developing".
  7. Enter a friendly name for the application, for example "To Do SPA", select "Web Application and/or Web API", and click next.
  8. For the sign-on URL, enter the base URL for the sample, which is by default https://localhost:44326/.
  9. For the App ID URI, enter https://<your_tenant_name>/ToDoSPA, replacing <your_tenant_name> with the name of your Azure AD tenant.
  10. In the "Permissions to Other Applications" section, click "Add Application." Select "Other" in the "Show" dropdown, and click the upper check mark. Locate & click on the To Go API, and click the bottom check mark to add the application. Select "Access To Go API" from the "Delegated Permissions" dropdown, and save the configuration.

All done! Before moving on to the next step, you need to find the Client ID of your application.

  1. While still in the Azure portal, click the Configure tab of your application.
  2. Find the Client ID value and copy it to the clipboard.

Step 5: Enable the OAuth2 implicit grant for your application

By default, applications provisioned in Azure AD are not enabled to use the OAuth2 implicit grant. In order to run this sample, you need to explicitly opt in.

  1. From the former steps, your browser should still be on the Azure management portal - and specifically, displaying the Configure tab of your application's entry.
  2. Using the Manage Manifest button in the drawer, download the manifest file for the application and save it to disk.
  3. Open the manifest file with a text editor. Search for the oauth2AllowImplicitFlow property. You will find that it is set to false; change it to true and save the file.
  4. Using the Manage Manifest button, upload the updated manifest file. Save the configuration of the app.

Step 6: Configure the To Do SPA to use your Azure Active Directory tenant

  1. Open the solution in Visual Studio 2013.
  2. In the TodoSPA project, open the web.config file.
  3. Find the app key ida:Tenant and replace the value with your AAD tenant name.
  4. Find the app key ida:Audience and replace the value with the Client ID from the Azure portal.
  5. Also in the TodoSPA project, open the file App/Scripts/App.js once again and locate the line adalAuthenticationServiceProvider.init(.
  6. Replace the value of tenant with your AAD tenant name.
  7. Replace the value of clientId with the Client ID from the Azure portal.

Step 7: Run the sample

Clean the solution, rebuild the solution, and run it.

You can trigger the sign in experience by either clicking on the sign in link on the top right corner, or by clicking directly on the To Do List or To Go List tabs. Explore the sample by signing in, adding items to the To Do List, removing the user account, and starting again. Add places to the To Go List, performing CRUD operations against the To Go API using CORS.

How To Deploy This Sample to Azure

To deploy the To Do SPA and To Go API to Azure Web Sites, you will create two web sites, publish each project to a web site, and update both projects to reference the new locations instead of IIS Express.

Create the To Go API Azure Web Site

  1. Sign in to the Azure management portal.
  2. Click on Web Sites in the left hand nav.
  3. Click New in the bottom left hand corner, select Compute --> Web Site --> Custom Create, select the hosting plan and region, and give your web site a name, e.g. togo-contoso.azurewebsites.net. Select a database to use, or create a new one. Click Create Web Site.
  4. Once the web site is created, click on it to manage it. For this set of steps, download the publish profile and save it. Other deployment mechanisms, such as from source control, can also be used.

Create the To Do SPA Azure Web Site

  1. Navigate to the Azure management portal.
  2. Click on Web Sites in the left hand nav.
  3. Click New in the bottom left hand corner, select Compute --> Web Site --> Custom Create, select the hosting plan and region, and give your web site a name, e.g. todo-contoso.azurewebsites.net. Select a database to use; the same database as the To Go API will be fine. Click Create Web Site.
  4. Once the web site is created, click on it to manage it. Once again, download the publish profile for this site and save it.

Update both projects to use Azure Web Sites

  1. In Visual Studio, go to the TodoSPA project.
  2. Two changes are needed. In App\Scripts\app.js, replace the property name of the endpoints object to the new location of your To Go API, e.g. https://togo-contoso.azurewebsites.net/. In App\Scripts\toGoListSvc.js, replace the apiEndpoint variable with the same value.
  3. In the ToGoAPI project, only one change is needed. In Controllers\ToGoListController.cs, update the [EnableCors...] attribute to reflect the new location of the To Do SPA, e.g. https://todo-contoso.azurewebsites.net. Once again, make sure to omit the trailing slash.

Publish the To Go API to Azure Web Sites

  1. Switch to Visual Studio and go to the ToGoAPI project. Right click on the project in the Solution Explorer and select Publish. Click Import, and import the To Go API publish profile you downloaded.
  2. On the Connection tab, update the Destination URL so that it is https, for example https://togo-constoso.azurewebsites.net. Click Next.
  3. On the Settings tab, make sure Enable Organizational Authentication is NOT selected. Click Publish.
  4. Visual Studio will publish the project and automatically open a browser to the URL of the project. If you see the default web page of the project, the publication was successful.

Publish the To Do SPA to Azure Web Sites

  1. Switch to Visual Studio and go to the TodoSPA project. Right click on the project in the Solution Explorer and select Publish. Click Import, and import the To Do SPA publish profile you downloaded.
  2. On the Connection tab, update the Destination URL so that it is https, for example https://todo-contoso.azurewebsites.net. Click Next.
  3. On the Settings tab, make sure Enable Organizational Authentication is NOT selected. Click Publish.
  4. Visual Studio will publish the project and automatically open a browser to the URL of the project. If you see the default web page of the project, the publication was successful.

Update the To Do SPA Configuration in the Directory Tenant

  1. Navigate to the Azure management portal.
  2. In the left hand nav, click on Active Directory and select your tenant.
  3. On the applications tab, select the To Do SPA application.
  4. On the Configure tab, update the Sign-On URL and Reply URL fields to the address of your SPA, for example https://todo-contoso.azurewebsites.net. Save the configuration.

About the Code

The key files containing authentication logic are the following:

App.js - injects the ADAL module dependency, provides the app configuration values used by ADAL for driving protocol interactions with AAD and indicates which routes should not be accessed without previous authentication.

index.html - contains a reference to adal.js

HomeController.js- shows how to take advantage of the login() and logOut() methods in ADAL.

UserDataController.js - shows how to extract user information from the cached id_token.

Special thanks to @matvelloso for the assist in getting this sample out.