nextcloud/apps/files_encryption/ajax/adminrecovery.php

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<?php
/**
* Copyright (c) 2013, Sam Tuke <samtuke@owncloud.com>
* This file is licensed under the Affero General Public License version 3 or later.
* See the COPYING-README file.
*
* @brief Script to handle admin settings for encrypted key recovery
*/
use OCA\Encryption;
\OCP\JSON::checkAdminUser();
\OCP\JSON::checkAppEnabled( 'files_encryption' );
\OCP\JSON::callCheck();
$return = $doSetup = false;
// Enable recoveryAdmin
if (
isset( $_POST['adminEnableRecovery'] )
&& 1 == $_POST['adminEnableRecovery']
// && isset( $_POST['recoveryPassword'] )
// && ! empty ( $_POST['recoveryPassword'] )
) {
// TODO: Let the admin set this themselves
$recoveryAdminUid = 'recoveryAdmin';
// If desired recoveryAdmin UID is already in use
if ( ! \OC_User::userExists( $recoveryAdminUid ) ) {
// Create new recoveryAdmin user
\OC_User::createUser( $recoveryAdminUid, $_POST['recoveryPassword'] );
// Make recovery user an administrator
\OC_Group::addToGroup ( $recoveryAdminUid, 'admin' );
$doSetup = true;
} else {
// Get list of admin users
$admins = OC_Group::usersInGroup( 'admin' );
// If the existing recoveryAdmin UID is an admin
if ( in_array( $recoveryAdminUid, $admins ) ) {
// The desired recoveryAdmi UID pre-exists and can be used
$doSetup = true;
// If the recoveryAdmin UID exists but doesn't have admin rights
} else {
$return = false;
}
}
// Setup recoveryAdmin user for encryption
if ( $doSetup ) {
$view = new \OC_FilesystemView( '/' );
$util = new \OCA\Encryption\Util( $view, $recoveryAdminUid );
// Ensure recoveryAdmin is ready for encryption (has usable keypair etc.)
$util->setupServerSide( $_POST['recoveryPassword'] );
// Store the UID in the DB
OC_Appconfig::setValue( 'files_encryption', 'recoveryAdminUid', $recoveryAdminUid );
$return = true;
}
// Set recoveryAdmin as enabled
OC_Appconfig::setValue( 'files_encryption', 'recoveryAdminEnabled', 1 );
// Disable recoveryAdmin
} elseif (
isset( $_POST['adminEnableRecovery'] )
&& 0 == $_POST['adminEnableRecovery']
) {
// Set recoveryAdmin as enabled
OC_Appconfig::setValue( 'files_encryption', 'recoveryAdminEnabled', 0 );
$return = true;
}
// Return success or failure
( $return ) ? \OCP\JSON::success() : \OCP\JSON::error();