# Nextcloud integration

- Based on [this plugin](https://github.com/nextcloud/user_external)
- Install that plugin via web
- Connect to server, enter nextcloud-docker-image: `docker exec -it nextcloud-aio-nextcloud bash`
- Adapt `/var/www/html/custom_apps/user_external/lib/BasicAuth.php` to switch from BasicAuth to RowtAuth:
```php
<?php
/**
 * Copyright (c) 2019 Lutz Freitag <lutz.freitag@gottliebtfreitag.de>
 * This file is licensed under the Affero General Public License version 3 or
 * later.
 * See the COPYING-README file.
 */

namespace OCA\UserExternal;

class BasicAuth extends Base {
    private $authUrl;

    public function __construct($authUrl) {
        parent::__construct($authUrl);
        $this->authUrl = $authUrl;
    }

    /**
     * Check if the password is correct without logging in the user
     *
     * @param string $uid      The username
     * @param string $password The password
     *
     * @return true/false
     */
    public function checkPassword($uid, $password) {
        // Prepare POST data with credentials
        $postData = http_build_query([
            'name' => $uid,
            'password' => $password
        ]);

        // Create context with POST method
        $context = stream_context_create([
            'http' => [
                'method' => 'POST',
                'header' => 'Content-Type: application/x-www-form-urlencoded',
                'content' => $postData,
                'follow_location' => 0
            ]
        ]);

        // Get the content of the response
        $content = @file_get_contents($this->authUrl, false, $context);

        if ($content === false) {
            \OC::$server->getLogger()->error(
                'ERROR: Failed to get content from Auth Url: '.$this->authUrl,
                ['app' => 'user_external']
            );
            return false;
        }

        // Check if the content is "SUCC"
        if (trim($content) === "SUCC") {
            $this->storeUser($uid);
            return $uid;
        }

        return false;
    }
}
```
- In `/var/www/html/config/config.php` add this:
```
 'user_backends' => 
  array (
    0 => 
    array (
      'class' => '\\OCA\\UserExternal\\BasicAuth',
      'arguments' => 
      array (
        0 => 'https://app.rudernlinz.at/nxauth',
      ),
    ),
  ),
```
- In `/var/www/html/config/config.php` add this `'skeletondirectory' => '',` to disable default folders for new users
- To automatically add users to a group (e.g. `vorstand`), use the `Auto Groups` plugin
- Shared folders are not shared with new members due to [this bug](https://github.com/nextcloud/server/issues/25062#issuecomment-766445043)
	- Find DB config: `docker exec nextcloud-aio-database env | grep POSTGRES`
	- Workaround: Connect to docker-db: `docker exec -it nextcloud-aio-database bash`
	- Connect to db: `psql -U nextcloud -d nextcloud_database`
	- (with `\l` you see all dbs)
	- Connect to nextcloud db: `\c nextcloud_database`
	- Do query from issue: `UPDATE oc_share SET accepted = 1 WHERE share_type = 1;`