TYPO3 Extension oauth2 (mfc/oauth2)

This extension provides OAuth 2.0 authentication for TYPO3 installations.

1. Features

• Can automatically create new backend users
• Certain OAuth resource servers can control admin permissions and assign backend group memberships

2. Usage

1) Installation

The only way to install this extension is by using Composer. In your Composer based TYPO3 project root, just run composer require mfc/oauth2.

2) Configure the extension

To add an OAuth2 Server for login, we recommend you create your own little extension, use your existing site
package or put the configuration in your typo3conf/AdditionalConfiguration.php.

2.1) Using the GitLab Provider included in this extension

Configuring the GitLab Login Provider is pretty straight forward. Just put the following configuration into your ext_localconf.php
or the aforementioned typo3conf/AdditionalConfiguration.php and customize it to your needs.

Mfc\OAuth2\ResourceServer\Registry::addServer(
    'gitlab', // identifier for the Resource Server
    'Login with GitLab', // Text displayed on the Login Screen
    \Mfc\OAuth2\ResourceServer\GitLab::class,
    [
        'enabled'   => true, // Enable/Disable the provider
        'arguments' => [
            'appId'                => 'your-app-id',
            'appSecret'            => 'your-app-secret',
            'gitlabServer'         => 'https://gitlab.com', // Your GitLab Server
            'gitlabAdminUserLevel' => \Mfc\OAuth2\ResourceServer\GitLab::USER_LEVEL_DEVELOPER, // User level at which the user will be given admin permissions
            'gitlabDefaultGroups'  => '0', // Groups to assign to the User (comma separated list possible)
            'gitlabUserOption'     => 0, // UserConfig
            'blockExternalUser'    => false, // Blocks users with flag external from access the backend
            'projectName'          => 'your/repo', // the repository from which user information is fetched
        ],
    ]
);

You can obtain the required information for the provider by going to either
https://gitlab.com/profile/applications if you’re using the hosted version of GitLab,
or to the equivalent page on your self-hosted GitLab server.

When creating the application within GitLab, you might need the following information:

• Redirect URI: <your-domain-here>/typo3/index.php
• Scopes: api,read_user,openid

2.2 Creating your own provider

To create your own Provider, you need to create your own extension, and create a class which extends
Mfc\OAuth2\ResourceServer\AbstractResourceServer. You can then use the same boilerplate shown in 2.1 to register
your newly created provider. The arguments array included in the provider registration will be provided as-is as
the first argument to your providers constructor, with the addition of a providerName key which contains the identifier
you set in your registration.

Example

You’ve created your own extension, and created the class Just\AnExample\Providers\ExampleProvider.
To register your provider you’d extend the configuration as follows

Mfc\OAuth2\ResourceServer\Registry::addServer(
    'example-provider', // identifier for the Resource Server
    'Login with Example', // Text displayed on the Login Screen
    \Just\AnExample\Providers\ExampleProvider::class,
    [
        'enabled'   => true, // Enable/Disable the provider
        'arguments' => [
            'yourarg' => 'somevalue',
            // ...
        ],
    ]
);

The first argument passed to your provider will be:

array(
    'providerName' => 'example-provider',
    'yourarg' => 'somevalue',
    // ...
);

3. License

mfc/oauth2 is released under the terms of the GPL-2 License.