WordPress OAuth & OpenID Connect Single Sign-On (SSO) plugin enables secure login into WordPress using IdentityServer4 as OAuth and OpenID Connect provider. You can also configure plugin using different custom providers and standard IDPs. It supports advanced Single Sign-On (SSO) features such as user profile Attribute mapping, Role mapping, etc. Here we will go through a guide to configure SSO between WordPress and IdentityServer4. By the end of this guide, users should be able to login to WordPress from IdentityServer4. To know more about other features we provide in WP OAuth Single Sign-On ( OAuth & OpenID Connect Client ) plugin, you can click here.

Pre-requisites : Download And Installation

• Log into your WordPress instance as an admin.
• Go to the WordPress Dashboard -> Plugins and click on Add New.
• Search for a WordPress OAuth Single Sign-On (SSO) plugin and click on Install Now.
• Once installed click on Activate.

Steps to configure IdentityServer4 Single Sign-On (SSO) Login into WordPress

1. Setup IdentityServer4 as OAuth Provider

• Set up IdentityServer4 using guidelines provided here.
• From Configure OAuth tab in Oauth Client plugin, collect Redirect/Callback URL and enter it into your IdentityServer4.
• Copy your Client ID and Client Secret and save it on your miniOrange OAuth Client plugin Configuration.
• You have successfully completed your IdentityServer4 OAuth Server side configurations.
• In Plugin, Add Custom Application.
• Enter your app name and use the following information to fill the details.

You have successfully configured IdentityServer4 as OAuth Provider for achieving IdentityServer4 login into your WordPress Site.

2. Setup WordPress as OAuth Client

• Go to Configure OAuth tab and configure App Name, Client ID, Client Secret from provided Endpoints.
• openid is already filled but if it doesn't work then configure scope as User.Read and for fetching group info use scope is Directory.read.all.

• Please refer the below table for configuring the scope & endpoints for IdentityServer4 in the plugin.

Client ID :	Click Here
Client Secret :	Click Here
Scope:	openid
Authorize Endpoint:	https://<your-domain>/connect/authorize
Access Token Endpoint:	https://<your-domain>/connect/token
Get User Info Endpoint:	https://<your-domain>/connect/userinfo
Custom redirect URL after logout:[optional] :	https://<your-domain>/connect/endsession?id_token_hint=##id_token##

• Click on Save Settings to save the configuration.

You have successfully configured WordPress as OAuth Client for achieving IdentityServer4 login into your WordPress Site.

3. User Attribute Mapping

• User Attribute Mapping is mandatory for enabling users to successfully login into WordPress. We will be setting up user profile attributes for WordPress using below settings.

Finding user attributes

• Go to Configure OAuth tab. Scroll down and click on Test Configuration.

• You will see all the values returned by your OAuth Provider to WordPress in a table. If you don't see value for First Name, Last Name, Email or Username, make the required settings in your OAuth Provider to return this information.

• Once you see all the values in Test Configuration, go to Attribute / Role Mapping tab, you will get the list of attributes in a Username dropdown.


4: Role Mapping [Premium]

• Click on “Test Configuration” and you will get the list of Attribute Names and Attribute Values that are sent by your OAuth provider.
• From the Test Configuration window, map the Attribute Names in the Attribute Mapping section of the plugin. Refer to the screenshot for more details.

• Enable Role Mapping: To enable Role Mapping, you need to map Group Name Attribute. Select the attribute name from the list of attributes which returns the roles from your provider application.
  Eg: Role


• Assign WordPress role to the Provider role: Based on your provider application, you can allocate the WordPress role to your provider roles. It can be a student, teacher, administrator or any other depending on your application. Add the provider roles under Group Attribute Value and assign the required WordPress role in front of it under WordPress Role.
  
  For example, in the below image. Teacher has been assigned the role of Administrator & Student is assigned the role of Subscriber.

• Once you save the mapping, the provider role will be assigned the WordPress administrator role after SSO.
  Example: As per the given example, Users with role ‘teacher’ will be added as Administrator in WordPress and ‘student’ will be added as Subscriber.

5: Login Settings / Sign In Settings

• The settings in Single Sign-On (SSO) Settings tab define the user experience for Single Sign-On (SSO). To add a IdentityServer4 login widget on your WordPress page, you need to follow the below steps.

1. Sign in settings for wordpress 5.7 and before :

• Go to WordPress Left Panel > Appearances > Widgets.
• Select miniOrange OAuth. Drag and drop to your favourite location and save.


2. Sign in settings for wordpress 5.8 :

• Go to WordPress Left Panel > Appearances > Widgets.
• Select miniOrange OAuth. Drag and drop to your favourite location and save.

• Open your WordPress page and you can see the IdentityServer4 SSO login button there. You can test the IdentityServer4 Single Sign-On (SSO) now.

In this Guide, you have successfully configured IdentityServer4 Single Sign-On (SSO) by configuring IdentityServer4 as OAuth Provider and WordPress as OAuth Client using our WP OAuth Single Sign-On ( OAuth & OpenID Connect Client ) plugin. This solution ensures that you are ready to roll out secure access to your WordPress site using IdentityServer4 login credentials within minutes.

Additional Resources

• What is OAuth 2.0?
• Login into any application using IdentityServer4 as Oauth 2.0 provider
• Building a Simple Token Server and Protecting Your ASP.NET Core APIs with JWT
• Frequently Asked Questions (FAQs)



Mail us on oauthsupport@xecurify.com for quick guidance(via email/meeting) on your requirement and our team will help you to select the best suitable solution/plan as per your requirement.