CTFd-SSO-plugin

This plugin allows login and registration via OAuth2.

Works perfectly with a large variety of identity management solutions, like KeyCloak.

Installation

1. Clone this repository to CTFd/plugins.
2. Install required python packages. If you are using Docker, it is done by rebuilding the container. Instead, if you are using other hosting solutions, you can install them with the command pip3 install -r requirements.txt from the plugin folder (CTFd/plugins/CTFd-SSO-plugin).
3. Edit the [extra] section of CTFd/config.ini adding these two values:
   • OAUTH_ALWAYS_POSSIBLE: set True if you want to allow registration via OAuth even if normal registration is turned off. Default is False.
   • OAUTH_CREATE_BUTTONS: set True if you want to automatically add the OAuth login buttons in the login page. Default is False.
4. Start or restart CTFd.
5. In the Admin Panel go to Plugins>ctfd-sso. There you can view and delete existing clients, or add a new one by pressing plus symbol.
6. Insert a client name (it will be shown on the button) and the other information according to the identity provider. Then press Add.
7. Log in :)

Admin accounts

If you want to automatically create admin accounts via the Identity Provider, make sure that the API Endpoint returns a key roles containing an array. The first element of that array will be set as the user role in CTFd.

For example if an user should be admin, the Identity Provider should return something like: {"preferred_username": "username", "email": "[email protected]", "roles": ["admin"]}

The allowed roles for CTFd are admin and user, but the latter is set by default.

Login buttons

If configured properly, this plugin will attempt to automatically insert the login buttons in the login page. It might fail if the theme isn't the original one. In this case or if you want to create some custom buttons, they should point to sso/login/<client_id>.

Screenshots