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WordPress OAuth & OpenID Connect Single Sign-On (SSO) plugin enables secure login into WordPress using NextCloud 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 NextCloud. By the end of this guide, users should be able to login to WordPress from NextCloud. 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 NextCloud Single Sign-On (SSO) Login into WordPress

1. Setup NextCloud as OAuth Provider

• Login to your Nextcloud server using admin credentials.
• Open the menu in the top-right corner and select Settings

• Now, go to the Security tab in the Administration section on the left.

• Scroll down to the OAuth 2.0 clients section and enter the Name for your application as well as the Redirection URL(Redirect url) which you will get from the from miniOrange OAuth Single Sign-On Plugin. Click on Add button.

• Then, copy the Client ID and Client Secret and keep these values handy as you will need them to configure the miniOrange OAuth Single Sign-On plugin.


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

2. Setup WordPress as OAuth Client

• Free
• Premium

• Go to Configure OAuth tab and click Add New Application to add a new client application into your website.

• Choose your Application from the list of OAuth / OpenID Connect Providers, Here NextCloud.

• Copy the Callback URL to be used in OAuth Provider Configuration and click Next.

• Configure App name. Copy and paste the endpoints from below table. Click Next.



Client ID :	from the step 9 above
Client Secret :	from the step 9 above
Scope:	user:read:email
Authorize Endpoint:	https://< your-nextcloud-domain >/apps/oauth2/authorize
Access Token Endpoint:	https://< your-nextcloud-domain >/apps/oauth2/api/v1/token
Get User Info Endpoint:	https://< your-nextcloud-domain >/ocs/v2.php/cloud/user?format=json

• Configure the client credentials like Client ID & Client Secret is shown in the setup dialogue box and enter the scope value as user:read:email. Click Next.

• Verify the configuration details and click on Finish to save the configuration.

• Go to Configure OAuth tab and search your application name to add a new client application into your website, Here NextCloud.

• Configure App Name, Client ID, Client Secret, Domain from NextCloud SSO application

• Choose your Grant Type from the list of options & Click on Save Settings to save the configuration.

You have successfully configured WordPress as OAuth Client for achieving user authentication with NextCloud Single Sign-On (SSO) 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 Nextcloud app to WordPress in a table. If you don't see value for DisplayName, Email or Address, make the required settings in your Nextcloud app 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.
  

  The following is a sample image for your reference. The attribute names can vary depending on your OAuth provider's configuration.

  
  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. Sign In Settings

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

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.


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 NextCloud SSO login button there. You can test the NextCloud Single Sign-On (SSO) now.

Sign in settings for WordPress 5.9

• Make sure the "Show on login page" option is enabled for your application. (Refer to the below image)

• Now, go to your WordPress Login page. (Eg. https://< your-wordpress-domain >/wp-login.php)
• You will see an NextCloud SSO login button there. Once you click the login button, you will be able to test the NextCloud Single Sign-On (SSO).

In this Guide, you have successfully configured NextCloud Single Sign-On (SSO) by configuring NextCloud 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 NextCloud login credentials within minutes.

Additional Resources

• NextCloud as OAuth Provider / OpenID Connect
• Documentation of NextCloud authentication for login
• WordPress Single Sign-On (SSO) OAuth / OpenID Connect / JWT
• What is OAuth 2.0 and how does it work?
• 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.