Az.ADB2C Powershell Module

This github repo contains a set of powershell script that help you to quickly setup an Azure AD B2C tenant and Custom Policies. If you are to set up a B2C tenant, you need to follow the guide on how to Create an Azure Active Directory B2C tenant. This leaves you with a basic tenant, but in order to install the Custom Policies, described in the documentation page Get started with custom policies in Azure Active Directory B2C, there are quite a few steps to complete. Although it is not complicated, it takes some time and involves som copy-n-pase, flickering between documentation pages, before you can test your first login. The powershell scripts in this repo are created with the aim of minimizing the time from setting up a B2C tenant to your first login.

Update

The scripts have been updated to use the Azure Az PowerShell module in order to get cross platform support. It no longer uses Azure CLI for MacOS/Linux platforms.

For MacOS, you find instructions on how to install Powershell in this link.

For Linux, you find instructions on how to install Powershell here.

Once you have Powershell core installed on your system, you need to install the Azure Az module. This works the same for Windows, Mac and Linux. On Mac/Linux, you start powershell in a terminal by running the pwsh command.

Set-ExecutionPolicy -ExecutionPolicy RemoteSigned -Scope CurrentUser
if ($null -eq (get-module Az.Accounts)) {
    Install-Module -Name Az.Accounts -Scope CurrentUser -Repository PSGallery -Force
    Import-Module -Name Az.Accounts
}

The powershell commands have changed naming convetion from *-AzureADBC* to *-AzADB2C and some commands have changed the verb, like Connect-AzureADB2CEnv is now named Connect-AzADB2C, and Deploy-AzureADB2CPolicyToTenant is now named Import-AzADB2CPolicyToTenant.

Setting up a new B2C tenant

With the scripts in this repository, you can create a fully functional B2C Custom Policy environment in seconds via the commands

Prerequisites

As mentioned, you need to create your B2C tenant which involves creating the resource in portal.azure.com

After creating the tenant, you need to link it to your Azure Subscription

Starting from scratch

1. Open a powershell command prompt and git clone this repo

git clone https://github.com/cljung/AzureAD-B2C-scripts.git
cd AzureAD-B2C-scripts
import-module .\Az.ADB2C.psm1

2. Connect to your B2C tenant for the first time

This powershell module work with a combination of interactive login and client credentials to perform the operations. When you start with new B2C tenant, there is no AppReg for the client credentials and we need to start by setting that up. Therefor, we need to run these to commands first. Connect-AzADB2CDevicelogin will sign you in to your tenant and request an access token with the scope for creating this AppReg. Change yourtenant to your B2C tenant name and optionally name the AppReg for the client credentials app differently.

When you run the device login command, it will copy the device code onto your clipboard and you can paste it into your browser with Ctrl+V. The rest of the signin depends on how you company have configured device login to work.

Connect-AzADB2CDevicelogin -TenantName "yourtenant.onmicrosoft.com" -Scope "Directory.ReadWrite.All"

New-AzADB2CGraphApp -n "B2C-Graph-App" -CreateConfigFile

The -CreateConfigFile switch will create a file named b2cAppSettings_yourtenant.json and copy in the AppID (client_id) and key (client_secret) into the file. If you don't pass the switch, you have to copy-n-paste the json output for "ClientCredentials" and update the b2cAppSettings.json file. Update the tenant name in b2cAppSettings.json too.

3. Grant permissions to B2C-Graph-App

The command New-AzADB2CGraphApp creats an AppReg to be used for client credentials, but it does not grant permissions to it. You leed to login to https://portal.azure.com/yourtenant.onmicrosoft.com and grant admin consent under API permissions. If the Grant admin consent button is greyed out in the portal, just wait a few seconds and do a hard refresh in the browser.

4. Sign in again

After you have completed the above step, you need to reauthenticate in order to be able to complete the rest of the setup. You do not need to close the powershell session. Issuing the below command in the same powershell session is ok.

Connect-AzADB2C -ConfigPath .\b2cAppSettings_yourtenant.json

5. Enabling Configuration for Identity Experience Framework

A new B2C tenat needs to have its IEF confuguration setup. This involves creating the signing and encryption policy keys, registering the applications IdentityExperienceFramework and ProxyIdentityExperienceFramework. This is explained the docs custom policy get started. This is all done with the below powershell command. By specifying the -n "ABC-WebApp the command will register a test app that you can use to test your B2C Custom Policies with that redirects to https://jwt.ms. The -f "abc123" creates a nonsense Facebook app secret. This is useful if you will use the SocialAndLocalAccounts base file from the B2C Starter Pack since it is built with Facebook as a sample. It is a nonsense secret to only make the policies upload ok and if you plan to use Facebook social login, you must register a real app in Facebook and recreate the key.

Enable-AzADB2CIdentityExperienceFramework -n "ABC-WebApp" -f "abc123"

6. (Optional) Create a Local Admin user

You might consider creating a local admin user for the purpose of having a local user with admin rights that you can use to login to Microsoft Graph Explorer. The user principle name will be graphexplorer@yourtenant.onmicrosoft.com. Having a local admin user also protects you from being completly locked out from your tenant in case the account you created the tenant becomes unusable.

New-AzADB2CLocalAdmin -u "graphexplorer" -RoleNames @("Global Administrator")

Creating a new Custom Policy project

Once you have your B2C tenant setup, it is time to create some Custom Policies. Using these Powershell modules, you will have your first Custom Policies ready to test in under 5 minutes.

Start a powershell session for you B2C tenant

Open a new Powershell command prompt and load the modules.

cd AzureAD-B2C-scripts
import-module .\Az.ADB2C.psm1

Then, run the cmdlet Connect-AzADB2C and specify your config file on the command line.

Connect-AzADB2C -ConfigPath .\b2cAppsettings_yourtenant.json

If you don't like the concept of working with client credentials, you can use the device login method and use you interactive user. In order to be able to upload your B2C Custom Policies, you would need to specify the correct scopes, like below.

Connect-AzADB2CDevicelogin -TenantName "yourtenant.onmicrosoft.com" -Scope "Application.Read.All Policy.ReadWrite.TrustFramework"

Create a new B2C Custom Policy project

Azure AD B2C Custom Policies has a starter pack of configuration files located in this github repo. When you work with B2C Custom Policies, you normally download the Starter Pack of choice and open them in a text editor to make your configuration modifications. All this work has been compacted in to one powershell command that will do all this for you.

By running it with the -PolicyPrefix parameter, you will modify the PolicyId to become B2C_1A_demo_TrustFrameworkExtension, etc, which helps you having multiple policies in one tenant.

New-AzADB2CPolicyProject -PolicyPrefix "demo"

The default PolicyType is SocialAndLocalAccounts and if you would like to base your policies on another type, you specify that on the command line.

New-AzADB2CPolicyProject -PolicyPrefix "demo" -PolicyType "SocialAndLocalAccountsWithMfa"

After you have run New-AzADB2CPolicyProject, you can directly push them to your tenant and test them

Import-AzADB2CPolicyToTenant 
Test-AzADB2CPolicy -n "ABC-WebApp"-p .\SignUpOrSignin.xml

If you are in a dev/test cycle and want to speed up testing of your changes, you can add the app name in the config file b2cAppSettings_yourtenant.json and shorten the command to just have the -p argument.

    "ClientCredentials": {
        "client_id": "....",
        "client_secret": "...."
    },

    "TestAppName": "ABC-WebApp",
    "SAMLTestAppName": "samltestapp2",

Quickly create a test user

You can either user the B2C policy's signup functionality to create a test user or create one using the powershell command below. By specifying an empty role, you will create a B2C Local Account just as you would using the signup functionality in the user journey.

New-AzADB2CLocalAdmin -u "alice@contoso.com" -DisplayName "Alice Contoso" -RoleNames @()

Add a desktop link to

If you want to create a Desktop link to launch a powershell window with the module already imported, you create a new link and specify the following.

Command	Description
Target	%SystemRoot%\system32\WindowsPowerShell\v1.0\powershell.exe -noexit -command import-module .\Az.ADB2C.psm1
Start in	%USERPROFILE%\src\b2c\scripts

List of Commands

See Get-Help for details

Command	Description
Add-AzADB2CClaimsProvider	Adds a ClaimsProvider configuration to the TrustFrameworkExtensions.xml file
Add-AzADB2CSAML2Protocol	Adds support for SAML to your policies
Connect-AzADB2C	Connects to an Azure AD B2C tenant and loads the config
Connect-AzADB2CDeviceLogin	Connects to an Azure AD B2C tenant using device login
Enable-AzADB2CIdentityExperienceFramework	Completes the configuration in the B2C tenant for Identity Experience Framework
Get-AzADB2CCustomDomain	Lists all available custom domain names for the current tenant.
Get-AzADB2CExtensionAttributesForUser	Get extension attributes for user
Get-AzADB2CPolicy	Gets a B2C Custom Policy from the tenant policy store by PolicyId
Get-AzADB2CPolicyTree	Get the B2C Policy file inheritance tree and returns it as an object or draws it like a tree
Get-AzADB2CStarterPack	Downloads the Azure AD B2C Custom Policy Starter Pack
Get-AzADB2CTenantId	Gets tenant aliases. TenantId to domain names
Get-AzADB2CPolicyIds	Lists B2C Custom Policies from the tenant policy
Get-AzADB2CTenantRegion	Gets the tenant region, like EU
Import-AzADB2CHtmlContent	Uploads files to Azure Blob Storage for use of custom html/css/javascript
Import-AzADB2CPolicyToTenant	Uploads B2C Custom Policies from local path to B2C tenant
New-AzADB2CExtensionAttribute	Registers an extension attribute in the B2C tenant
New-AzADB2CGraphApp	Registers an application with needed Graph API Permissions for use with client credentials operations on B2C tenant
New-AzADB2CIdentityExperienceFrameworkApps	Register Identity Experience Framework Apps IdentityExperienceFramework and ProxyIdentityExperienceFramework
New-AzADB2CLocalAdmin	Registers a Local Admin user in the B2C tenant. This user is not a Signup user but a user given admin permissions in the tenant
New-AzADB2CPolicyKey	Registers a B2C IEF Policy Key
New-AzADB2CPolicyProject	Wrapper command that downloads the starter pack, auto-edit the details, prepares custom attributes, upgrades to lates html page versions and enables javascript and sets the AppInsight Instrumentation Key.
New-AzADB2CTestApp	Registeres a test webapp that can be used for testing B2C Custom Policies with. It redirects to jwt.ms
Read-AzADB2CConfig	Read-AzADB2CConfig
Remove-AzADB2CPolicyFromTenant	Deletes B2C Custom Policies from a B2C tenant
Remove-AzADB2CExtensionAttribute	Removes an extension attribute in the B2C tenant
Repair-AzADB2CUserJourneyOrder	Makes sure UserJourney Numbers are in sequence 1..n with no gaps ord duplicates
Set-AzADB2CAppInsights	Sets the AppInsign InstrumentationKey in all or one RelyingParty files in PolicyPath
Set-AzADB2CCustomAttributeApp	Sets the AppID and objectId for extension attributes in the B2C Custom Policies
Set-AzADB2CCustomizeUX	Prepares the policies for UX customizations via setting page version to latest and enabling javascript
Set-AzADB2CExtensionAttributeForUser	Updates an extension attributes for user
Set-AzADB2CKmsi	Adds KMSI (Keep me signed in) to the signin page
Set-AzADB2CLocalization	Add Localization to Signup/Signin page
Set-AzADB2CPolicyDetails	Updates the policy file details to make them ready for upload to a specific tenant. You can also use this command to clean away details before sharing your policies.
Start-AzADB2CPortal	Starts the Azure Portal in the right b2C tenant and with the B2C panel active
Test-AzADB2CPolicy	Creates a working url for testing and launches a browser to test a B2C Custom Policy