chore: Add SPDX header

Signed-off-by: Andy Scherzinger <info@andy-scherzinger.de>

86 files changed, 192 insertions, 1804 deletions

diff --git a/apps/dav/lib/CalDAV/Activity/Backend.php b/apps/dav/lib/CalDAV/Activity/Backend.php
index 661a3dcc9ae..c2018baab92 100644
--- a/apps/dav/lib/CalDAV/Activity/Backend.php
+++ b/apps/dav/lib/CalDAV/Activity/Backend.php
@@ -1,27 +1,7 @@
 <?php
 /**
- * @copyright Copyright (c) 2016 Joas Schilling <coding@schilljs.com>
- *
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
- * @author Joas Schilling <coding@schilljs.com>
- * @author Roeland Jago Douma <roeland@famdouma.nl>
- * @author Thomas Citharel <nextcloud@tcit.fr>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2016 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV\Activity;
 
diff --git a/apps/dav/lib/CalDAV/Activity/Filter/Calendar.php b/apps/dav/lib/CalDAV/Activity/Filter/Calendar.php
index 06258e3cf74..6ac161a0a2c 100644
--- a/apps/dav/lib/CalDAV/Activity/Filter/Calendar.php
+++ b/apps/dav/lib/CalDAV/Activity/Filter/Calendar.php
@@ -1,25 +1,7 @@
 <?php
 /**
- * @copyright Copyright (c) 2016 Joas Schilling <coding@schilljs.com>
- *
- * @author Joas Schilling <coding@schilljs.com>
- * @author John Molakvoæ <skjnldsv@protonmail.com>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2016 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV\Activity\Filter;
 
diff --git a/apps/dav/lib/CalDAV/Activity/Filter/Todo.php b/apps/dav/lib/CalDAV/Activity/Filter/Todo.php
index 996250075c3..dfa05ae9099 100644
--- a/apps/dav/lib/CalDAV/Activity/Filter/Todo.php
+++ b/apps/dav/lib/CalDAV/Activity/Filter/Todo.php
@@ -1,24 +1,7 @@
 <?php
 /**
- * @copyright Copyright (c) 2016 Joas Schilling <coding@schilljs.com>
- *
- * @author Joas Schilling <coding@schilljs.com>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2016 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV\Activity\Filter;
 
diff --git a/apps/dav/lib/CalDAV/Activity/Provider/Base.php b/apps/dav/lib/CalDAV/Activity/Provider/Base.php
index 841011574d0..a063a31d015 100644
--- a/apps/dav/lib/CalDAV/Activity/Provider/Base.php
+++ b/apps/dav/lib/CalDAV/Activity/Provider/Base.php
@@ -1,25 +1,7 @@
 <?php
 /**
- * @copyright Copyright (c) 2016 Joas Schilling <coding@schilljs.com>
- *
- * @author Joas Schilling <coding@schilljs.com>
- * @author Thomas Citharel <nextcloud@tcit.fr>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2016 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV\Activity\Provider;
 
diff --git a/apps/dav/lib/CalDAV/Activity/Provider/Calendar.php b/apps/dav/lib/CalDAV/Activity/Provider/Calendar.php
index e4cc5fadf7c..a7509831f29 100644
--- a/apps/dav/lib/CalDAV/Activity/Provider/Calendar.php
+++ b/apps/dav/lib/CalDAV/Activity/Provider/Calendar.php
@@ -1,28 +1,7 @@
 <?php
 /**
- * @copyright Copyright (c) 2016 Joas Schilling <coding@schilljs.com>
- *
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
- * @author Joas Schilling <coding@schilljs.com>
- * @author Julius Härtl <jus@bitgrid.net>
- * @author Morris Jobke <hey@morrisjobke.de>
- * @author Thomas Citharel <nextcloud@tcit.fr>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2016 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV\Activity\Provider;
 
diff --git a/apps/dav/lib/CalDAV/Activity/Provider/Event.php b/apps/dav/lib/CalDAV/Activity/Provider/Event.php
index 4dcb18fdb90..45354faae69 100644
--- a/apps/dav/lib/CalDAV/Activity/Provider/Event.php
+++ b/apps/dav/lib/CalDAV/Activity/Provider/Event.php
@@ -1,28 +1,7 @@
 <?php
 /**
- * @copyright Copyright (c) 2016 Joas Schilling <coding@schilljs.com>
- *
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
- * @author Joas Schilling <coding@schilljs.com>
- * @author Julius Härtl <jus@bitgrid.net>
- * @author Morris Jobke <hey@morrisjobke.de>
- * @author Thomas Citharel <nextcloud@tcit.fr>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2016 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV\Activity\Provider;
 
diff --git a/apps/dav/lib/CalDAV/Activity/Provider/Todo.php b/apps/dav/lib/CalDAV/Activity/Provider/Todo.php
index 0a8434b9595..052370c7d3a 100644
--- a/apps/dav/lib/CalDAV/Activity/Provider/Todo.php
+++ b/apps/dav/lib/CalDAV/Activity/Provider/Todo.php
@@ -1,26 +1,7 @@
 <?php
 /**
- * @copyright Copyright (c) 2016 Joas Schilling <coding@schilljs.com>
- *
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
- * @author Joas Schilling <coding@schilljs.com>
- * @author Morris Jobke <hey@morrisjobke.de>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2016 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV\Activity\Provider;
 
diff --git a/apps/dav/lib/CalDAV/Activity/Setting/CalDAVSetting.php b/apps/dav/lib/CalDAV/Activity/Setting/CalDAVSetting.php
index 20325a253f4..67cc2abc9fd 100644
--- a/apps/dav/lib/CalDAV/Activity/Setting/CalDAVSetting.php
+++ b/apps/dav/lib/CalDAV/Activity/Setting/CalDAVSetting.php
@@ -3,26 +3,8 @@
 declare(strict_types=1);
 
 /**
- * @copyright Copyright (c) 2020 Robin Appelman <robin@icewind.nl>
- *
- * @author Joas Schilling <coding@schilljs.com>
- * @author Robin Appelman <robin@icewind.nl>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2020 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV\Activity\Setting;
 
diff --git a/apps/dav/lib/CalDAV/Activity/Setting/Calendar.php b/apps/dav/lib/CalDAV/Activity/Setting/Calendar.php
index 4a226fca439..4e1fdc0fe97 100644
--- a/apps/dav/lib/CalDAV/Activity/Setting/Calendar.php
+++ b/apps/dav/lib/CalDAV/Activity/Setting/Calendar.php
@@ -1,25 +1,7 @@
 <?php
 /**
- * @copyright Copyright (c) 2016 Joas Schilling <coding@schilljs.com>
- *
- * @author Joas Schilling <coding@schilljs.com>
- * @author Robin Appelman <robin@icewind.nl>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2016 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV\Activity\Setting;
 
diff --git a/apps/dav/lib/CalDAV/Activity/Setting/Event.php b/apps/dav/lib/CalDAV/Activity/Setting/Event.php
index 0239296a403..a177d27d2e3 100644
--- a/apps/dav/lib/CalDAV/Activity/Setting/Event.php
+++ b/apps/dav/lib/CalDAV/Activity/Setting/Event.php
@@ -1,25 +1,7 @@
 <?php
 /**
- * @copyright Copyright (c) 2016 Joas Schilling <coding@schilljs.com>
- *
- * @author Joas Schilling <coding@schilljs.com>
- * @author Robin Appelman <robin@icewind.nl>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2016 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV\Activity\Setting;
 
diff --git a/apps/dav/lib/CalDAV/Activity/Setting/Todo.php b/apps/dav/lib/CalDAV/Activity/Setting/Todo.php
index a4ac3f5d569..ecd3634ee12 100644
--- a/apps/dav/lib/CalDAV/Activity/Setting/Todo.php
+++ b/apps/dav/lib/CalDAV/Activity/Setting/Todo.php
@@ -1,25 +1,7 @@
 <?php
 /**
- * @copyright Copyright (c) 2016 Joas Schilling <coding@schilljs.com>
- *
- * @author Joas Schilling <coding@schilljs.com>
- * @author Robin Appelman <robin@icewind.nl>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2016 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV\Activity\Setting;
 
diff --git a/apps/dav/lib/CalDAV/AppCalendar/AppCalendar.php b/apps/dav/lib/CalDAV/AppCalendar/AppCalendar.php
index 68b71404371..2d9beff9ced 100644
--- a/apps/dav/lib/CalDAV/AppCalendar/AppCalendar.php
+++ b/apps/dav/lib/CalDAV/AppCalendar/AppCalendar.php
@@ -3,25 +3,8 @@
 declare(strict_types=1);
 
 /**
- * @copyright 2023 Ferdinand Thiessen <opensource@fthiessen.de>
- *
- * @author Ferdinand Thiessen <opensource@fthiessen.de>
- *
- * @license AGPL-3.0-or-later
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2023 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 
 namespace OCA\DAV\CalDAV\AppCalendar;
diff --git a/apps/dav/lib/CalDAV/AppCalendar/AppCalendarPlugin.php b/apps/dav/lib/CalDAV/AppCalendar/AppCalendarPlugin.php
index b6e00baafd6..56e91c581f8 100644
--- a/apps/dav/lib/CalDAV/AppCalendar/AppCalendarPlugin.php
+++ b/apps/dav/lib/CalDAV/AppCalendar/AppCalendarPlugin.php
@@ -3,25 +3,8 @@
 declare(strict_types=1);
 
 /**
- * @copyright 2023 Ferdinand Thiessen <opensource@fthiessen.de>
- *
- * @author Ferdinand Thiessen <opensource@fthiessen.de>
- *
- * @license AGPL-3.0-or-later
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2023 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 
 namespace OCA\DAV\CalDAV\AppCalendar;
diff --git a/apps/dav/lib/CalDAV/AppCalendar/CalendarObject.php b/apps/dav/lib/CalDAV/AppCalendar/CalendarObject.php
index bfcab35f74e..ba3f7074faf 100644
--- a/apps/dav/lib/CalDAV/AppCalendar/CalendarObject.php
+++ b/apps/dav/lib/CalDAV/AppCalendar/CalendarObject.php
@@ -3,25 +3,8 @@
 declare(strict_types=1);
 
 /**
- * @copyright 2023 Ferdinand Thiessen <opensource@fthiessen.de>
- *
- * @author Ferdinand Thiessen <opensource@fthiessen.de>
- *
- * @license AGPL-3.0-or-later
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2023 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 
 namespace OCA\DAV\CalDAV\AppCalendar;
diff --git a/apps/dav/lib/CalDAV/Auth/CustomPrincipalPlugin.php b/apps/dav/lib/CalDAV/Auth/CustomPrincipalPlugin.php
index 89e50c7da6b..71b9acb939b 100644
--- a/apps/dav/lib/CalDAV/Auth/CustomPrincipalPlugin.php
+++ b/apps/dav/lib/CalDAV/Auth/CustomPrincipalPlugin.php
@@ -3,25 +3,8 @@
 declare(strict_types=1);
 
 /**
- * CalDAV App
- *
- * @copyright 2021 Anna Larch <anna.larch@gmx.net>
- *
- * @author Anna Larch <anna.larch@gmx.net>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
- * License as published by the Free Software Foundation; either
- * version 3 of the License, or any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU AFFERO GENERAL PUBLIC LICENSE for more details.
- *
- * You should have received a copy of the GNU Affero General Public
- * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2021 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 
 namespace OCA\DAV\CalDAV\Auth;
diff --git a/apps/dav/lib/CalDAV/Auth/PublicPrincipalPlugin.php b/apps/dav/lib/CalDAV/Auth/PublicPrincipalPlugin.php
index 96669558818..ed89638451e 100644
--- a/apps/dav/lib/CalDAV/Auth/PublicPrincipalPlugin.php
+++ b/apps/dav/lib/CalDAV/Auth/PublicPrincipalPlugin.php
@@ -3,25 +3,8 @@
 declare(strict_types=1);
 
 /**
- * CalDAV App
- *
- * @copyright 2021 Anna Larch <anna.larch@gmx.net>
- *
- * @author Anna Larch <anna.larch@gmx.net>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
- * License as published by the Free Software Foundation; either
- * version 3 of the License, or any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU AFFERO GENERAL PUBLIC LICENSE for more details.
- *
- * You should have received a copy of the GNU Affero General Public
- * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2021 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV\Auth;
 
diff --git a/apps/dav/lib/CalDAV/BirthdayCalendar/EnablePlugin.php b/apps/dav/lib/CalDAV/BirthdayCalendar/EnablePlugin.php
index f7d68e4ec1d..733e8079111 100644
--- a/apps/dav/lib/CalDAV/BirthdayCalendar/EnablePlugin.php
+++ b/apps/dav/lib/CalDAV/BirthdayCalendar/EnablePlugin.php
@@ -1,26 +1,7 @@
 <?php
 /**
- * @copyright 2017, Georg Ehrke <oc.list@georgehrke.com>
- *
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
- * @author Georg Ehrke <oc.list@georgehrke.com>
- * @author Roeland Jago Douma <roeland@famdouma.nl>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2017 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV\BirthdayCalendar;
 
diff --git a/apps/dav/lib/CalDAV/BirthdayService.php b/apps/dav/lib/CalDAV/BirthdayService.php
index 93344e33186..0990cd674dd 100644
--- a/apps/dav/lib/CalDAV/BirthdayService.php
+++ b/apps/dav/lib/CalDAV/BirthdayService.php
@@ -3,33 +3,9 @@
 declare(strict_types=1);
 
 /**
- * @copyright Copyright (c) 2016, ownCloud, Inc.
- * @copyright Copyright (c) 2019, Georg Ehrke
- *
- * @author Achim Königs <garfonso@tratschtante.de>
- * @author Christian Weiske <cweiske@cweiske.de>
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
- * @author Georg Ehrke <oc.list@georgehrke.com>
- * @author Robin Appelman <robin@icewind.nl>
- * @author Sven Strickroth <email@cs-ware.de>
- * @author Thomas Müller <thomas.mueller@tmit.eu>
- * @author Valdnet <47037905+Valdnet@users.noreply.github.com>
- * @author Cédric Neukom <github@webguy.ch>
- *
- * @license AGPL-3.0
- *
- * This code is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License, version 3,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License, version 3,
- * along with this program. If not, see <http://www.gnu.org/licenses/>
- *
+ * SPDX-FileCopyrightText: 2019 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-FileCopyrightText: 2016 ownCloud, Inc.
+ * SPDX-License-Identifier: AGPL-3.0-only
  */
 namespace OCA\DAV\CalDAV;
 
diff --git a/apps/dav/lib/CalDAV/CachedSubscription.php b/apps/dav/lib/CalDAV/CachedSubscription.php
index 79a57bc8c23..75ee5cb440f 100644
--- a/apps/dav/lib/CalDAV/CachedSubscription.php
+++ b/apps/dav/lib/CalDAV/CachedSubscription.php
@@ -3,27 +3,8 @@
 declare(strict_types=1);
 
 /**
- * @copyright 2018 Georg Ehrke <oc.list@georgehrke.com>
- *
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
- * @author Georg Ehrke <oc.list@georgehrke.com>
- * @author Roeland Jago Douma <roeland@famdouma.nl>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2018 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV;
 
diff --git a/apps/dav/lib/CalDAV/CachedSubscriptionImpl.php b/apps/dav/lib/CalDAV/CachedSubscriptionImpl.php
index 3406707d0d4..3f6eff4e1f4 100644
--- a/apps/dav/lib/CalDAV/CachedSubscriptionImpl.php
+++ b/apps/dav/lib/CalDAV/CachedSubscriptionImpl.php
@@ -3,25 +3,8 @@
 declare(strict_types=1);
 
 /**
- * @copyright 2024 Daniel Kesselberg <mail@danielkesselberg.de>
- *
- * @author Daniel Kesselberg <mail@danielkesselberg.de>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2024 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV;
 
diff --git a/apps/dav/lib/CalDAV/CachedSubscriptionObject.php b/apps/dav/lib/CalDAV/CachedSubscriptionObject.php
index 3c1373763e1..dc9141a61b8 100644
--- a/apps/dav/lib/CalDAV/CachedSubscriptionObject.php
+++ b/apps/dav/lib/CalDAV/CachedSubscriptionObject.php
@@ -3,25 +3,8 @@
 declare(strict_types=1);
 
 /**
- * @copyright 2018 Georg Ehrke <oc.list@georgehrke.com>
- *
- * @author Georg Ehrke <oc.list@georgehrke.com>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2018 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV;
 
diff --git a/apps/dav/lib/CalDAV/CachedSubscriptionProvider.php b/apps/dav/lib/CalDAV/CachedSubscriptionProvider.php
index e2508af5592..73fde0b71a0 100644
--- a/apps/dav/lib/CalDAV/CachedSubscriptionProvider.php
+++ b/apps/dav/lib/CalDAV/CachedSubscriptionProvider.php
@@ -3,25 +3,8 @@
 declare(strict_types=1);
 
 /**
- * @copyright 2024 Daniel Kesselberg <mail@danielkesselberg.de>
- *
- * @author Daniel Kesselberg <mail@danielkesselberg.de>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2024 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV;
 
diff --git a/apps/dav/lib/CalDAV/CalDavBackend.php b/apps/dav/lib/CalDAV/CalDavBackend.php
index 0aa4426c786..46515852a0a 100644
--- a/apps/dav/lib/CalDAV/CalDavBackend.php
+++ b/apps/dav/lib/CalDAV/CalDavBackend.php
@@ -1,41 +1,8 @@
 <?php
 /**
- * @copyright Copyright (c) 2016, ownCloud, Inc.
- * @copyright Copyright (c) 2018 Georg Ehrke
- * @copyright Copyright (c) 2020, leith abdulla (<online-nextcloud@eleith.com>)
- *
- * @author Chih-Hsuan Yen <yan12125@gmail.com>
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
- * @author dartcafe <github@dartcafe.de>
- * @author Georg Ehrke <oc.list@georgehrke.com>
- * @author Joas Schilling <coding@schilljs.com>
- * @author John Molakvoæ <skjnldsv@protonmail.com>
- * @author leith abdulla <online-nextcloud@eleith.com>
- * @author Lukas Reschke <lukas@statuscode.ch>
- * @author Morris Jobke <hey@morrisjobke.de>
- * @author Robin Appelman <robin@icewind.nl>
- * @author Roeland Jago Douma <roeland@famdouma.nl>
- * @author Simon Spannagel <simonspa@kth.se>
- * @author Stefan Weil <sw@weilnetz.de>
- * @author Thomas Citharel <nextcloud@tcit.fr>
- * @author Thomas Müller <thomas.mueller@tmit.eu>
- * @author Vinicius Cubas Brand <vinicius@eita.org.br>
- * @author Richard Steinmetz <richard@steinmetz.cloud>
- *
- * @license AGPL-3.0
- *
- * This code is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License, version 3,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License, version 3,
- * along with this program. If not, see <http://www.gnu.org/licenses/>
- *
+ * SPDX-FileCopyrightText: 2018 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-FileCopyrightText: 2016 ownCloud, Inc.
+ * SPDX-License-Identifier: AGPL-3.0-only
  */
 namespace OCA\DAV\CalDAV;
 
diff --git a/apps/dav/lib/CalDAV/Calendar.php b/apps/dav/lib/CalDAV/Calendar.php
index fbfbdf652ec..eaf8d227a6f 100644
--- a/apps/dav/lib/CalDAV/Calendar.php
+++ b/apps/dav/lib/CalDAV/Calendar.php
@@ -1,30 +1,10 @@
 <?php
+
+
 /**
- * @copyright Copyright (c) 2016, ownCloud, Inc.
- *
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
- * @author Gary Kim <gary@garykim.dev>
- * @author Georg Ehrke <oc.list@georgehrke.com>
- * @author Joas Schilling <coding@schilljs.com>
- * @author Lukas Reschke <lukas@statuscode.ch>
- * @author Roeland Jago Douma <roeland@famdouma.nl>
- * @author Thomas Citharel <nextcloud@tcit.fr>
- * @author Thomas Müller <thomas.mueller@tmit.eu>
- *
- * @license AGPL-3.0
- *
- * This code is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License, version 3,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License, version 3,
- * along with this program. If not, see <http://www.gnu.org/licenses/>
- *
+ * SPDX-FileCopyrightText: 2016-2024 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-FileCopyrightText: 2016 ownCloud, Inc.
+ * SPDX-License-Identifier: AGPL-3.0-only
  */
 namespace OCA\DAV\CalDAV;
 
diff --git a/apps/dav/lib/CalDAV/CalendarHome.php b/apps/dav/lib/CalDAV/CalendarHome.php
index 31463bcc678..d01c2affbc8 100644
--- a/apps/dav/lib/CalDAV/CalendarHome.php
+++ b/apps/dav/lib/CalDAV/CalendarHome.php
@@ -1,28 +1,9 @@
 <?php
+
 /**
- * @copyright Copyright (c) 2016, ownCloud, Inc.
- *
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
- * @author Georg Ehrke <oc.list@georgehrke.com>
- * @author Joas Schilling <coding@schilljs.com>
- * @author Lukas Reschke <lukas@statuscode.ch>
- * @author Roeland Jago Douma <roeland@famdouma.nl>
- * @author Thomas Müller <thomas.mueller@tmit.eu>
- *
- * @license AGPL-3.0
- *
- * This code is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License, version 3,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License, version 3,
- * along with this program. If not, see <http://www.gnu.org/licenses/>
- *
+ * SPDX-FileCopyrightText: 2016-2024 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-FileCopyrightText: 2016 ownCloud, Inc.
+ * SPDX-License-Identifier: AGPL-3.0-only
  */
 namespace OCA\DAV\CalDAV;
 
diff --git a/apps/dav/lib/CalDAV/CalendarImpl.php b/apps/dav/lib/CalDAV/CalendarImpl.php
index 397cff38037..cac9bad0d89 100644
--- a/apps/dav/lib/CalDAV/CalendarImpl.php
+++ b/apps/dav/lib/CalDAV/CalendarImpl.php
@@ -3,28 +3,8 @@
 declare(strict_types=1);
 
 /**
- * @copyright 2017, Georg Ehrke <oc.list@georgehrke.com>
- *
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
- * @author Georg Ehrke <oc.list@georgehrke.com>
- * @author Roeland Jago Douma <roeland@famdouma.nl>
- * @author Anna Larch <anna.larch@gmx.net>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2017 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV;
 
diff --git a/apps/dav/lib/CalDAV/CalendarManager.php b/apps/dav/lib/CalDAV/CalendarManager.php
index daa96a51392..a415a830d2e 100644
--- a/apps/dav/lib/CalDAV/CalendarManager.php
+++ b/apps/dav/lib/CalDAV/CalendarManager.php
@@ -1,26 +1,7 @@
 <?php
 /**
- * @copyright 2017, Georg Ehrke <oc.list@georgehrke.com>
- *
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
- * @author Georg Ehrke <oc.list@georgehrke.com>
- * @author Morris Jobke <hey@morrisjobke.de>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2017 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV;
 
diff --git a/apps/dav/lib/CalDAV/CalendarObject.php b/apps/dav/lib/CalDAV/CalendarObject.php
index fc2b65f3efe..f7af3ce8b4b 100644
--- a/apps/dav/lib/CalDAV/CalendarObject.php
+++ b/apps/dav/lib/CalDAV/CalendarObject.php
@@ -1,28 +1,8 @@
 <?php
 /**
- * @copyright Copyright (c) 2016, ownCloud, Inc.
- * @copyright Copyright (c) 2017, Georg Ehrke
- * @copyright Copyright (c) 2020, Gary Kim <gary@garykim.dev>
- *
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
- * @author Gary Kim <gary@garykim.dev>
- * @author Georg Ehrke <oc.list@georgehrke.com>
- * @author Thomas Müller <thomas.mueller@tmit.eu>
- *
- * @license AGPL-3.0
- *
- * This code is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License, version 3,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License, version 3,
- * along with this program. If not, see <http://www.gnu.org/licenses/>
- *
+ * SPDX-FileCopyrightText: 2017 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-FileCopyrightText: 2016 ownCloud, Inc.
+ * SPDX-License-Identifier: AGPL-3.0-only
  */
 namespace OCA\DAV\CalDAV;
 
diff --git a/apps/dav/lib/CalDAV/CalendarProvider.php b/apps/dav/lib/CalDAV/CalendarProvider.php
index f29c601db2d..90605d4f76e 100644
--- a/apps/dav/lib/CalDAV/CalendarProvider.php
+++ b/apps/dav/lib/CalDAV/CalendarProvider.php
@@ -3,25 +3,8 @@
 declare(strict_types=1);
 
 /**
- * @copyright 2021 Anna Larch <anna.larch@gmx.net>
- *
- * @author Anna Larch <anna.larch@gmx.net>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2021 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV;
 
diff --git a/apps/dav/lib/CalDAV/CalendarRoot.php b/apps/dav/lib/CalDAV/CalendarRoot.php
index bece2087e8a..7e57b70c481 100644
--- a/apps/dav/lib/CalDAV/CalendarRoot.php
+++ b/apps/dav/lib/CalDAV/CalendarRoot.php
@@ -1,27 +1,9 @@
 <?php
+
 /**
- * @copyright Copyright (c) 2016, ownCloud, Inc.
- *
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
- * @author Georg Ehrke <oc.list@georgehrke.com>
- * @author Lukas Reschke <lukas@statuscode.ch>
- * @author Roeland Jago Douma <roeland@famdouma.nl>
- * @author Thomas Müller <thomas.mueller@tmit.eu>
- *
- * @license AGPL-3.0
- *
- * This code is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License, version 3,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License, version 3,
- * along with this program. If not, see <http://www.gnu.org/licenses/>
- *
+ * SPDX-FileCopyrightText: 2016-2024 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-FileCopyrightText: 2016 ownCloud, Inc.
+ * SPDX-License-Identifier: AGPL-3.0-only
  */
 namespace OCA\DAV\CalDAV;
 
diff --git a/apps/dav/lib/CalDAV/EventComparisonService.php b/apps/dav/lib/CalDAV/EventComparisonService.php
index 24f5da34f8e..e3c7749a772 100644
--- a/apps/dav/lib/CalDAV/EventComparisonService.php
+++ b/apps/dav/lib/CalDAV/EventComparisonService.php
@@ -3,25 +3,8 @@
 declare(strict_types=1);
 
 /**
- * @copyright 2022 Anna Larch <anna.larch@gmx.net>
- *
- * @author 2022 Anna Larch <anna.larch@gmx.net>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2022 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV;
 
diff --git a/apps/dav/lib/CalDAV/FreeBusy/FreeBusyGenerator.php b/apps/dav/lib/CalDAV/FreeBusy/FreeBusyGenerator.php
index 2148e6a1da2..c2c474a90fe 100644
--- a/apps/dav/lib/CalDAV/FreeBusy/FreeBusyGenerator.php
+++ b/apps/dav/lib/CalDAV/FreeBusy/FreeBusyGenerator.php
@@ -3,25 +3,8 @@
 declare(strict_types=1);
 
 /**
- * @copyright 2023 Anna Larch <anna.larch@gmx.net>
- *
- * @author Anna Larch <anna.larch@gmx.net>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2023 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 
 namespace OCA\DAV\CalDAV\FreeBusy;
diff --git a/apps/dav/lib/CalDAV/ICSExportPlugin/ICSExportPlugin.php b/apps/dav/lib/CalDAV/ICSExportPlugin/ICSExportPlugin.php
index 627959c90f6..2b4f8ed0223 100644
--- a/apps/dav/lib/CalDAV/ICSExportPlugin/ICSExportPlugin.php
+++ b/apps/dav/lib/CalDAV/ICSExportPlugin/ICSExportPlugin.php
@@ -1,24 +1,7 @@
 <?php
 /**
- * @copyright 2019, Georg Ehrke <oc.list@georgehrke.com>
- *
- * @author Georg Ehrke <oc.list@georgehrke.com>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2019 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV\ICSExportPlugin;
 
diff --git a/apps/dav/lib/CalDAV/IRestorable.php b/apps/dav/lib/CalDAV/IRestorable.php
index fab73c43d3a..5850e0a5645 100644
--- a/apps/dav/lib/CalDAV/IRestorable.php
+++ b/apps/dav/lib/CalDAV/IRestorable.php
@@ -3,25 +3,8 @@
 declare(strict_types=1);
 
 /**
- * @copyright 2021 Christoph Wurst <christoph@winzerhof-wurst.at>
- *
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2021 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV;
 
diff --git a/apps/dav/lib/CalDAV/Integration/ExternalCalendar.php b/apps/dav/lib/CalDAV/Integration/ExternalCalendar.php
index 0afb11c2673..882a11c34b2 100644
--- a/apps/dav/lib/CalDAV/Integration/ExternalCalendar.php
+++ b/apps/dav/lib/CalDAV/Integration/ExternalCalendar.php
@@ -1,24 +1,7 @@
 <?php
 /**
- * @copyright 2020, Georg Ehrke <oc.list@georgehrke.com>
- *
- * @author Georg Ehrke <oc.list@georgehrke.com>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2020 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV\Integration;
 
diff --git a/apps/dav/lib/CalDAV/Integration/ICalendarProvider.php b/apps/dav/lib/CalDAV/Integration/ICalendarProvider.php
index c72112f06ba..bbee4cbda7c 100644
--- a/apps/dav/lib/CalDAV/Integration/ICalendarProvider.php
+++ b/apps/dav/lib/CalDAV/Integration/ICalendarProvider.php
@@ -1,24 +1,7 @@
 <?php
 /**
- * @copyright 2020, Georg Ehrke <oc.list@georgehrke.com>
- *
- * @author Georg Ehrke <oc.list@georgehrke.com>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2020 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV\Integration;
 
diff --git a/apps/dav/lib/CalDAV/InvitationResponse/InvitationResponseServer.php b/apps/dav/lib/CalDAV/InvitationResponse/InvitationResponseServer.php
index e92eae2d3f1..94f95652677 100644
--- a/apps/dav/lib/CalDAV/InvitationResponse/InvitationResponseServer.php
+++ b/apps/dav/lib/CalDAV/InvitationResponse/InvitationResponseServer.php
@@ -1,27 +1,7 @@
 <?php
 /**
- * @copyright Copyright (c) 2018, Georg Ehrke.
- *
- * @author Georg Ehrke <oc.list@georgehrke.com>
- * @author Morris Jobke <hey@morrisjobke.de>
- * @author Roeland Jago Douma <roeland@famdouma.nl>
- * @author Thomas Citharel <nextcloud@tcit.fr>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2018 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV\InvitationResponse;
 
diff --git a/apps/dav/lib/CalDAV/Outbox.php b/apps/dav/lib/CalDAV/Outbox.php
index eebb48e1294..ffda73147a6 100644
--- a/apps/dav/lib/CalDAV/Outbox.php
+++ b/apps/dav/lib/CalDAV/Outbox.php
@@ -1,25 +1,7 @@
 <?php
 /**
- * @copyright Copyright (c) 2018, Georg Ehrke
- *
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
- * @author Georg Ehrke <oc.list@georgehrke.com>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2018 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV;
 
diff --git a/apps/dav/lib/CalDAV/Plugin.php b/apps/dav/lib/CalDAV/Plugin.php
index 5b367c51053..24448ae71ab 100644
--- a/apps/dav/lib/CalDAV/Plugin.php
+++ b/apps/dav/lib/CalDAV/Plugin.php
@@ -1,25 +1,9 @@
 <?php
+
 /**
- * @copyright Copyright (c) 2016, ownCloud GmbH.
- *
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
- * @author Georg Ehrke <oc.list@georgehrke.com>
- * @author Thomas Müller <thomas.mueller@tmit.eu>
- *
- * @license AGPL-3.0
- *
- * This code is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License, version 3,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License, version 3,
- * along with this program. If not, see <http://www.gnu.org/licenses/>
- *
+ * SPDX-FileCopyrightText: 2017-2024 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-FileCopyrightText: 2016 ownCloud GmbH.
+ * SPDX-License-Identifier: AGPL-3.0-only
  */
 namespace OCA\DAV\CalDAV;
 
diff --git a/apps/dav/lib/CalDAV/Principal/Collection.php b/apps/dav/lib/CalDAV/Principal/Collection.php
index 27997741609..f2cea0b5136 100644
--- a/apps/dav/lib/CalDAV/Principal/Collection.php
+++ b/apps/dav/lib/CalDAV/Principal/Collection.php
@@ -1,25 +1,7 @@
 <?php
 /**
- * @copyright Copyright (c) 2017, Christoph Seitz <christoph.seitz@posteo.de>
- *
- * @author Christoph Seitz <christoph.seitz@posteo.de>
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2017 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV\Principal;
 
diff --git a/apps/dav/lib/CalDAV/Principal/User.php b/apps/dav/lib/CalDAV/Principal/User.php
index 904ecc32e89..60b7953ea62 100644
--- a/apps/dav/lib/CalDAV/Principal/User.php
+++ b/apps/dav/lib/CalDAV/Principal/User.php
@@ -1,25 +1,7 @@
 <?php
 /**
- * @copyright Copyright (c) 2017, Christoph Seitz <christoph.seitz@posteo.de>
- *
- * @author Christoph Seitz <christoph.seitz@posteo.de>
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2017 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV\Principal;
 
diff --git a/apps/dav/lib/CalDAV/Proxy/Proxy.php b/apps/dav/lib/CalDAV/Proxy/Proxy.php
index 8bafe8cc3b3..a10f82e4b29 100644
--- a/apps/dav/lib/CalDAV/Proxy/Proxy.php
+++ b/apps/dav/lib/CalDAV/Proxy/Proxy.php
@@ -3,25 +3,8 @@
 declare(strict_types=1);
 
 /**
- * @copyright Copyright (c) 2019, Roeland Jago Douma <roeland@famdouma.nl>
- *
- * @author Roeland Jago Douma <roeland@famdouma.nl>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2019 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV\Proxy;
 
diff --git a/apps/dav/lib/CalDAV/Proxy/ProxyMapper.php b/apps/dav/lib/CalDAV/Proxy/ProxyMapper.php
index e48e283484c..3b9b9c3d9eb 100644
--- a/apps/dav/lib/CalDAV/Proxy/ProxyMapper.php
+++ b/apps/dav/lib/CalDAV/Proxy/ProxyMapper.php
@@ -3,27 +3,8 @@
 declare(strict_types=1);
 
 /**
- * @copyright Copyright (c) 2019, Roeland Jago Douma <roeland@famdouma.nl>
- *
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
- * @author Georg Ehrke <oc.list@georgehrke.com>
- * @author Roeland Jago Douma <roeland@famdouma.nl>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2019 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV\Proxy;
 
diff --git a/apps/dav/lib/CalDAV/PublicCalendar.php b/apps/dav/lib/CalDAV/PublicCalendar.php
index 16c7f86917d..4ee811efeae 100644
--- a/apps/dav/lib/CalDAV/PublicCalendar.php
+++ b/apps/dav/lib/CalDAV/PublicCalendar.php
@@ -1,26 +1,7 @@
 <?php
 /**
- * @copyright Copyright (c) 2017, Georg Ehrke
- *
- * @author Gary Kim <gary@garykim.dev>
- * @author Georg Ehrke <oc.list@georgehrke.com>
- * @author Roeland Jago Douma <roeland@famdouma.nl>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2017 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV;
 
diff --git a/apps/dav/lib/CalDAV/PublicCalendarObject.php b/apps/dav/lib/CalDAV/PublicCalendarObject.php
index 69a5583d8f5..c3dc5ab1843 100644
--- a/apps/dav/lib/CalDAV/PublicCalendarObject.php
+++ b/apps/dav/lib/CalDAV/PublicCalendarObject.php
@@ -1,25 +1,7 @@
 <?php
 /**
- * @copyright Copyright (c) 2017, Georg Ehrke
- *
- * @author Georg Ehrke <oc.list@georgehrke.com>
- * @author Roeland Jago Douma <roeland@famdouma.nl>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2017 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV;
 
diff --git a/apps/dav/lib/CalDAV/PublicCalendarRoot.php b/apps/dav/lib/CalDAV/PublicCalendarRoot.php
index a652b6ef1e5..e7008bfd82c 100644
--- a/apps/dav/lib/CalDAV/PublicCalendarRoot.php
+++ b/apps/dav/lib/CalDAV/PublicCalendarRoot.php
@@ -1,27 +1,9 @@
 <?php
+
 /**
- * @copyright Copyright (c) 2016, ownCloud, Inc.
- *
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
- * @author Georg Ehrke <oc.list@georgehrke.com>
- * @author Lukas Reschke <lukas@statuscode.ch>
- * @author Thomas Citharel <nextcloud@tcit.fr>
- * @author Thomas Müller <thomas.mueller@tmit.eu>
- *
- * @license AGPL-3.0
- *
- * This code is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License, version 3,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License, version 3,
- * along with this program. If not, see <http://www.gnu.org/licenses/>
- *
+ * SPDX-FileCopyrightText: 2016-2024 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-FileCopyrightText: 2016 ownCloud, Inc.
+ * SPDX-License-Identifier: AGPL-3.0-only
  */
 namespace OCA\DAV\CalDAV;
 
diff --git a/apps/dav/lib/CalDAV/Publishing/PublishPlugin.php b/apps/dav/lib/CalDAV/Publishing/PublishPlugin.php
index fedd918e6a4..94c5b7d1f52 100644
--- a/apps/dav/lib/CalDAV/Publishing/PublishPlugin.php
+++ b/apps/dav/lib/CalDAV/Publishing/PublishPlugin.php
@@ -1,29 +1,7 @@
 <?php
 /**
- * @copyright Copyright (c) 2016 Thomas Citharel <tcit@tcit.fr>
- *
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
- * @author Georg Ehrke <oc.list@georgehrke.com>
- * @author Morris Jobke <hey@morrisjobke.de>
- * @author Roeland Jago Douma <roeland@famdouma.nl>
- * @author Thomas Citharel <nextcloud@tcit.fr>
- * @author Thomas Müller <thomas.mueller@tmit.eu>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2016 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV\Publishing;
 
diff --git a/apps/dav/lib/CalDAV/Publishing/Xml/Publisher.php b/apps/dav/lib/CalDAV/Publishing/Xml/Publisher.php
index cbff5e66a85..d3543ce5bae 100644
--- a/apps/dav/lib/CalDAV/Publishing/Xml/Publisher.php
+++ b/apps/dav/lib/CalDAV/Publishing/Xml/Publisher.php
@@ -1,25 +1,7 @@
 <?php
 /**
- * @copyright Copyright (c) 2016 Thomas Citharel <tcit@tcit.fr>
- *
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
- * @author Thomas Citharel <nextcloud@tcit.fr>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2016 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV\Publishing\Xml;
 
diff --git a/apps/dav/lib/CalDAV/Reminder/Backend.php b/apps/dav/lib/CalDAV/Reminder/Backend.php
index f1f5d8c4ac3..ce4469228d3 100644
--- a/apps/dav/lib/CalDAV/Reminder/Backend.php
+++ b/apps/dav/lib/CalDAV/Reminder/Backend.php
@@ -3,28 +3,8 @@
 declare(strict_types=1);
 
 /**
- * @copyright Copyright (c) 2019, Thomas Citharel
- * @copyright Copyright (c) 2019, Georg Ehrke
- *
- * @author Georg Ehrke <oc.list@georgehrke.com>
- * @author Roeland Jago Douma <roeland@famdouma.nl>
- * @author Thomas Citharel <nextcloud@tcit.fr>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2019 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV\Reminder;
 
diff --git a/apps/dav/lib/CalDAV/Reminder/INotificationProvider.php b/apps/dav/lib/CalDAV/Reminder/INotificationProvider.php
index 1eb3932e611..1428eb9c46c 100644
--- a/apps/dav/lib/CalDAV/Reminder/INotificationProvider.php
+++ b/apps/dav/lib/CalDAV/Reminder/INotificationProvider.php
@@ -3,28 +3,8 @@
 declare(strict_types=1);
 
 /**
- * @copyright Copyright (c) 2019, Georg Ehrke
- *
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
- * @author Georg Ehrke <oc.list@georgehrke.com>
- * @author Roeland Jago Douma <roeland@famdouma.nl>
- * @author Richard Steinmetz <richard@steinmetz.cloud>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2019 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV\Reminder;
 
diff --git a/apps/dav/lib/CalDAV/Reminder/NotificationProvider/AbstractProvider.php b/apps/dav/lib/CalDAV/Reminder/NotificationProvider/AbstractProvider.php
index 52c994554cc..4d087f58d2b 100644
--- a/apps/dav/lib/CalDAV/Reminder/NotificationProvider/AbstractProvider.php
+++ b/apps/dav/lib/CalDAV/Reminder/NotificationProvider/AbstractProvider.php
@@ -3,30 +3,8 @@
 declare(strict_types=1);
 
 /**
- * @copyright Copyright (c) 2019, Thomas Citharel
- * @copyright Copyright (c) 2019, Georg Ehrke
- *
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
- * @author Georg Ehrke <oc.list@georgehrke.com>
- * @author Joas Schilling <coding@schilljs.com>
- * @author Roeland Jago Douma <roeland@famdouma.nl>
- * @author Richard Steinmetz <richard@steinmetz.cloud>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2019 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV\Reminder\NotificationProvider;
 
diff --git a/apps/dav/lib/CalDAV/Reminder/NotificationProvider/AudioProvider.php b/apps/dav/lib/CalDAV/Reminder/NotificationProvider/AudioProvider.php
index 4b369b34dc0..01d51489a3b 100644
--- a/apps/dav/lib/CalDAV/Reminder/NotificationProvider/AudioProvider.php
+++ b/apps/dav/lib/CalDAV/Reminder/NotificationProvider/AudioProvider.php
@@ -3,25 +3,8 @@
 declare(strict_types=1);
 
 /**
- * @copyright Copyright (c) 2019, Georg Ehrke
- *
- * @author Georg Ehrke <oc.list@georgehrke.com>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2019 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV\Reminder\NotificationProvider;
 
diff --git a/apps/dav/lib/CalDAV/Reminder/NotificationProvider/EmailProvider.php b/apps/dav/lib/CalDAV/Reminder/NotificationProvider/EmailProvider.php
index 262ceb479f0..947d286643c 100644
--- a/apps/dav/lib/CalDAV/Reminder/NotificationProvider/EmailProvider.php
+++ b/apps/dav/lib/CalDAV/Reminder/NotificationProvider/EmailProvider.php
@@ -3,31 +3,8 @@
 declare(strict_types=1);
 
 /**
- * @copyright Copyright (c) 2019, Thomas Citharel
- * @copyright Copyright (c) 2019, Georg Ehrke
- *
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
- * @author Georg Ehrke <oc.list@georgehrke.com>
- * @author Joas Schilling <coding@schilljs.com>
- * @author Richard Steinmetz <richard@steinmetz.cloud>
- * @author Roeland Jago Douma <roeland@famdouma.nl>
- * @author Thomas Citharel <nextcloud@tcit.fr>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2019 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV\Reminder\NotificationProvider;
 
diff --git a/apps/dav/lib/CalDAV/Reminder/NotificationProvider/ProviderNotAvailableException.php b/apps/dav/lib/CalDAV/Reminder/NotificationProvider/ProviderNotAvailableException.php
index 2e4f9a38493..15994bacf49 100644
--- a/apps/dav/lib/CalDAV/Reminder/NotificationProvider/ProviderNotAvailableException.php
+++ b/apps/dav/lib/CalDAV/Reminder/NotificationProvider/ProviderNotAvailableException.php
@@ -3,25 +3,8 @@
 declare(strict_types=1);
 
 /**
- * @copyright Copyright (c) 2018 Thomas Citharel <tcit@tcit.fr>
- *
- * @author Thomas Citharel <nextcloud@tcit.fr>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2018 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV\Reminder\NotificationProvider;
 
diff --git a/apps/dav/lib/CalDAV/Reminder/NotificationProvider/PushProvider.php b/apps/dav/lib/CalDAV/Reminder/NotificationProvider/PushProvider.php
index 79e4e44e6d8..5b0ba28a6c1 100644
--- a/apps/dav/lib/CalDAV/Reminder/NotificationProvider/PushProvider.php
+++ b/apps/dav/lib/CalDAV/Reminder/NotificationProvider/PushProvider.php
@@ -3,30 +3,8 @@
 declare(strict_types=1);
 
 /**
- * @copyright Copyright (c) 2019, Thomas Citharel
- * @copyright Copyright (c) 2019, Georg Ehrke
- *
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
- * @author Georg Ehrke <oc.list@georgehrke.com>
- * @author Roeland Jago Douma <roeland@famdouma.nl>
- * @author Thomas Citharel <nextcloud@tcit.fr>
- * @author Richard Steinmetz <richard@steinmetz.cloud>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2019 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV\Reminder\NotificationProvider;
 
diff --git a/apps/dav/lib/CalDAV/Reminder/NotificationProviderManager.php b/apps/dav/lib/CalDAV/Reminder/NotificationProviderManager.php
index cd8030a1177..f64de85c449 100644
--- a/apps/dav/lib/CalDAV/Reminder/NotificationProviderManager.php
+++ b/apps/dav/lib/CalDAV/Reminder/NotificationProviderManager.php
@@ -3,27 +3,8 @@
 declare(strict_types=1);
 
 /**
- * @copyright Copyright (c) 2019, Thomas Citharel
- * @copyright Copyright (c) 2019, Georg Ehrke
- *
- * @author Georg Ehrke <oc.list@georgehrke.com>
- * @author Thomas Citharel <nextcloud@tcit.fr>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2019 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV\Reminder;
 
diff --git a/apps/dav/lib/CalDAV/Reminder/NotificationTypeDoesNotExistException.php b/apps/dav/lib/CalDAV/Reminder/NotificationTypeDoesNotExistException.php
index 16fb858bc3a..6fd2a29ede5 100644
--- a/apps/dav/lib/CalDAV/Reminder/NotificationTypeDoesNotExistException.php
+++ b/apps/dav/lib/CalDAV/Reminder/NotificationTypeDoesNotExistException.php
@@ -3,25 +3,8 @@
 declare(strict_types=1);
 
 /**
- * @copyright Copyright (c) 2019, Thomas Citharel
- *
- * @author Thomas Citharel <nextcloud@tcit.fr>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2019 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV\Reminder;
 
diff --git a/apps/dav/lib/CalDAV/Reminder/Notifier.php b/apps/dav/lib/CalDAV/Reminder/Notifier.php
index e8f0405f3ce..8863c165be1 100644
--- a/apps/dav/lib/CalDAV/Reminder/Notifier.php
+++ b/apps/dav/lib/CalDAV/Reminder/Notifier.php
@@ -3,29 +3,8 @@
 declare(strict_types=1);
 
 /**
- * @copyright Copyright (c) 2019, Thomas Citharel
- * @copyright Copyright (c) 2019, Georg Ehrke
- *
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
- * @author Georg Ehrke <oc.list@georgehrke.com>
- * @author Roeland Jago Douma <roeland@famdouma.nl>
- * @author Thomas Citharel <nextcloud@tcit.fr>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2019 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV\Reminder;
 
diff --git a/apps/dav/lib/CalDAV/Reminder/ReminderService.php b/apps/dav/lib/CalDAV/Reminder/ReminderService.php
index 9f4b55824e8..6faf5bdecd6 100644
--- a/apps/dav/lib/CalDAV/Reminder/ReminderService.php
+++ b/apps/dav/lib/CalDAV/Reminder/ReminderService.php
@@ -3,31 +3,8 @@
 declare(strict_types=1);
 
 /**
- * @copyright Copyright (c) 2019, Thomas Citharel
- * @copyright Copyright (c) 2019, Georg Ehrke
- *
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
- * @author Georg Ehrke <oc.list@georgehrke.com>
- * @author Joas Schilling <coding@schilljs.com>
- * @author Roeland Jago Douma <roeland@famdouma.nl>
- * @author Thomas Citharel <nextcloud@tcit.fr>
- * @author Richard Steinmetz <richard@steinmetz.cloud>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2019 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV\Reminder;
 
diff --git a/apps/dav/lib/CalDAV/ResourceBooking/AbstractPrincipalBackend.php b/apps/dav/lib/CalDAV/ResourceBooking/AbstractPrincipalBackend.php
index 92c61e72780..2eb8ebfc84e 100644
--- a/apps/dav/lib/CalDAV/ResourceBooking/AbstractPrincipalBackend.php
+++ b/apps/dav/lib/CalDAV/ResourceBooking/AbstractPrincipalBackend.php
@@ -1,27 +1,7 @@
 <?php
 /**
- * @copyright 2019, Georg Ehrke <oc.list@georgehrke.com>
- *
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
- * @author Georg Ehrke <oc.list@georgehrke.com>
- * @author Roeland Jago Douma <roeland@famdouma.nl>
- * @author Anna Larch <anna.larch@gmx.net>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2019 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV\ResourceBooking;
 
diff --git a/apps/dav/lib/CalDAV/ResourceBooking/ResourcePrincipalBackend.php b/apps/dav/lib/CalDAV/ResourceBooking/ResourcePrincipalBackend.php
index 45795377e11..40396f67ce9 100644
--- a/apps/dav/lib/CalDAV/ResourceBooking/ResourcePrincipalBackend.php
+++ b/apps/dav/lib/CalDAV/ResourceBooking/ResourcePrincipalBackend.php
@@ -1,24 +1,7 @@
 <?php
 /**
- * @copyright 2018, Georg Ehrke <oc.list@georgehrke.com>
- *
- * @author Georg Ehrke <oc.list@georgehrke.com>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2018 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV\ResourceBooking;
 
diff --git a/apps/dav/lib/CalDAV/ResourceBooking/RoomPrincipalBackend.php b/apps/dav/lib/CalDAV/ResourceBooking/RoomPrincipalBackend.php
index 829ca7d6033..91cf78c296f 100644
--- a/apps/dav/lib/CalDAV/ResourceBooking/RoomPrincipalBackend.php
+++ b/apps/dav/lib/CalDAV/ResourceBooking/RoomPrincipalBackend.php
@@ -1,24 +1,7 @@
 <?php
 /**
- * @copyright 2018, Georg Ehrke <oc.list@georgehrke.com>
- *
- * @author Georg Ehrke <oc.list@georgehrke.com>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2018 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV\ResourceBooking;
 
diff --git a/apps/dav/lib/CalDAV/RetentionService.php b/apps/dav/lib/CalDAV/RetentionService.php
index 9a43d5bdc91..72301927f2b 100644
--- a/apps/dav/lib/CalDAV/RetentionService.php
+++ b/apps/dav/lib/CalDAV/RetentionService.php
@@ -3,25 +3,8 @@
 declare(strict_types=1);
 
 /**
- * @copyright 2021 Christoph Wurst <christoph@winzerhof-wurst.at>
- *
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2021 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV;
 
diff --git a/apps/dav/lib/CalDAV/Schedule/IMipPlugin.php b/apps/dav/lib/CalDAV/Schedule/IMipPlugin.php
index dcac8db2bbd..ef506d1593c 100644
--- a/apps/dav/lib/CalDAV/Schedule/IMipPlugin.php
+++ b/apps/dav/lib/CalDAV/Schedule/IMipPlugin.php
@@ -1,38 +1,10 @@
 <?php
+
 /**
- * @copyright Copyright (c) 2016, ownCloud, Inc.
- * @copyright Copyright (c) 2017, Georg Ehrke
- * @copyright Copyright (C) 2007-2015 fruux GmbH (https://fruux.com/).
- * @copyright Copyright (C) 2007-2015 fruux GmbH (https://fruux.com/).
- * @copyright 2022 Anna Larch <anna.larch@gmx.net>
- *
- * @author brad2014 <brad2014@users.noreply.github.com>
- * @author Brad Rubenstein <brad@wbr.tech>
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
- * @author Georg Ehrke <oc.list@georgehrke.com>
- * @author Joas Schilling <coding@schilljs.com>
- * @author Leon Klingele <leon@struktur.de>
- * @author Nick Sweeting <git@sweeting.me>
- * @author rakekniven <mark.ziegler@rakekniven.de>
- * @author Roeland Jago Douma <roeland@famdouma.nl>
- * @author Thomas Citharel <nextcloud@tcit.fr>
- * @author Thomas Müller <thomas.mueller@tmit.eu>
- * @author Anna Larch <anna.larch@gmx.net>
- *
- * @license AGPL-3.0
- *
- * This code is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License, version 3,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License, version 3,
- * along with this program. If not, see <http://www.gnu.org/licenses/>
- *
+ * SPDX-FileCopyrightText: 2016-2024 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-FileCopyrightText: 2016 ownCloud, Inc.
+ * SPDX-FileCopyrightText: 2007-2015 fruux GmbH (https://fruux.com/)
+ * SPDX-License-Identifier: AGPL-3.0-only
  */
 namespace OCA\DAV\CalDAV\Schedule;
 
diff --git a/apps/dav/lib/CalDAV/Schedule/IMipService.php b/apps/dav/lib/CalDAV/Schedule/IMipService.php
index 42a8479191b..e71f97764f8 100644
--- a/apps/dav/lib/CalDAV/Schedule/IMipService.php
+++ b/apps/dav/lib/CalDAV/Schedule/IMipService.php
@@ -1,26 +1,9 @@
 <?php
 
 declare(strict_types=1);
-/*
- * DAV App
- *
- * @copyright 2022 Anna Larch <anna.larch@gmx.net>
- *
- * @author Anna Larch <anna.larch@gmx.net>
- * @author Richard Steinmetz <richard@steinmetz.cloud>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
- * License as published by the Free Software Foundation; either
- * version 3 of the License, or any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU AFFERO GENERAL PUBLIC LICENSE for more details.
- *
- * You should have received a copy of the GNU Affero General Public
- * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+/**
+ * SPDX-FileCopyrightText: 2022 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 
 namespace OCA\DAV\CalDAV\Schedule;
diff --git a/apps/dav/lib/CalDAV/Schedule/Plugin.php b/apps/dav/lib/CalDAV/Schedule/Plugin.php
index a1297fd2cf1..9e1006e72c0 100644
--- a/apps/dav/lib/CalDAV/Schedule/Plugin.php
+++ b/apps/dav/lib/CalDAV/Schedule/Plugin.php
@@ -1,31 +1,7 @@
 <?php
 /**
- * @copyright Copyright (c) 2016, Roeland Jago Douma <roeland@famdouma.nl>
- * @copyright Copyright (c) 2016, Joas Schilling <coding@schilljs.com>
- *
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
- * @author Daniel Kesselberg <mail@danielkesselberg.de>
- * @author Georg Ehrke <oc.list@georgehrke.com>
- * @author Joas Schilling <coding@schilljs.com>
- * @author Roeland Jago Douma <roeland@famdouma.nl>
- * @author Thomas Citharel <nextcloud@tcit.fr>
- * @author Richard Steinmetz <richard@steinmetz.cloud>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2016 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV\Schedule;
 
diff --git a/apps/dav/lib/CalDAV/Search/SearchPlugin.php b/apps/dav/lib/CalDAV/Search/SearchPlugin.php
index d08a5749ab2..fb55dec593c 100644
--- a/apps/dav/lib/CalDAV/Search/SearchPlugin.php
+++ b/apps/dav/lib/CalDAV/Search/SearchPlugin.php
@@ -1,28 +1,7 @@
 <?php
 /**
- * @copyright Copyright (c) 2017 Georg Ehrke <oc.list@georgehrke.com>
- *
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
- * @author Georg Ehrke <oc.list@georgehrke.com>
- * @author Joas Schilling <coding@schilljs.com>
- * @author Morris Jobke <hey@morrisjobke.de>
- * @author Roeland Jago Douma <roeland@famdouma.nl>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2017 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV\Search;
 
diff --git a/apps/dav/lib/CalDAV/Search/Xml/Filter/CompFilter.php b/apps/dav/lib/CalDAV/Search/Xml/Filter/CompFilter.php
index d5b7c834e36..8a130865842 100644
--- a/apps/dav/lib/CalDAV/Search/Xml/Filter/CompFilter.php
+++ b/apps/dav/lib/CalDAV/Search/Xml/Filter/CompFilter.php
@@ -1,26 +1,7 @@
 <?php
 /**
- * @copyright Copyright (c) 2017 Georg Ehrke <oc.list@georgehrke.com>
- *
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
- * @author Georg Ehrke <oc.list@georgehrke.com>
- * @author Roeland Jago Douma <roeland@famdouma.nl>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2017 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV\Search\Xml\Filter;
 
diff --git a/apps/dav/lib/CalDAV/Search/Xml/Filter/LimitFilter.php b/apps/dav/lib/CalDAV/Search/Xml/Filter/LimitFilter.php
index 2c435ba3650..943e657903e 100644
--- a/apps/dav/lib/CalDAV/Search/Xml/Filter/LimitFilter.php
+++ b/apps/dav/lib/CalDAV/Search/Xml/Filter/LimitFilter.php
@@ -1,27 +1,7 @@
 <?php
 /**
- * @copyright Copyright (c) 2017 Georg Ehrke <oc.list@georgehrke.com>
- *
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
- * @author Georg Ehrke <oc.list@georgehrke.com>
- * @author Morris Jobke <hey@morrisjobke.de>
- * @author Roeland Jago Douma <roeland@famdouma.nl>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2017 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV\Search\Xml\Filter;
 
diff --git a/apps/dav/lib/CalDAV/Search/Xml/Filter/OffsetFilter.php b/apps/dav/lib/CalDAV/Search/Xml/Filter/OffsetFilter.php
index a6f41d09161..439a795dde9 100644
--- a/apps/dav/lib/CalDAV/Search/Xml/Filter/OffsetFilter.php
+++ b/apps/dav/lib/CalDAV/Search/Xml/Filter/OffsetFilter.php
@@ -1,27 +1,7 @@
 <?php
 /**
- * @copyright Copyright (c) 2017 Georg Ehrke <oc.list@georgehrke.com>
- *
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
- * @author Georg Ehrke <oc.list@georgehrke.com>
- * @author Morris Jobke <hey@morrisjobke.de>
- * @author Roeland Jago Douma <roeland@famdouma.nl>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2017 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV\Search\Xml\Filter;
 
diff --git a/apps/dav/lib/CalDAV/Search/Xml/Filter/ParamFilter.php b/apps/dav/lib/CalDAV/Search/Xml/Filter/ParamFilter.php
index c25450a0c94..3b03b63e909 100644
--- a/apps/dav/lib/CalDAV/Search/Xml/Filter/ParamFilter.php
+++ b/apps/dav/lib/CalDAV/Search/Xml/Filter/ParamFilter.php
@@ -1,26 +1,7 @@
 <?php
 /**
- * @copyright Copyright (c) 2017 Georg Ehrke <oc.list@georgehrke.com>
- *
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
- * @author Georg Ehrke <oc.list@georgehrke.com>
- * @author Roeland Jago Douma <roeland@famdouma.nl>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2017 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV\Search\Xml\Filter;
 
diff --git a/apps/dav/lib/CalDAV/Search/Xml/Filter/PropFilter.php b/apps/dav/lib/CalDAV/Search/Xml/Filter/PropFilter.php
index 990b0ebf730..42ecf630f44 100644
--- a/apps/dav/lib/CalDAV/Search/Xml/Filter/PropFilter.php
+++ b/apps/dav/lib/CalDAV/Search/Xml/Filter/PropFilter.php
@@ -1,26 +1,7 @@
 <?php
 /**
- * @copyright Copyright (c) 2017 Georg Ehrke <oc.list@georgehrke.com>
- *
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
- * @author Georg Ehrke <oc.list@georgehrke.com>
- * @author Roeland Jago Douma <roeland@famdouma.nl>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2017 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV\Search\Xml\Filter;
 
diff --git a/apps/dav/lib/CalDAV/Search/Xml/Filter/SearchTermFilter.php b/apps/dav/lib/CalDAV/Search/Xml/Filter/SearchTermFilter.php
index 06fe39a463b..b10cf3140cf 100644
--- a/apps/dav/lib/CalDAV/Search/Xml/Filter/SearchTermFilter.php
+++ b/apps/dav/lib/CalDAV/Search/Xml/Filter/SearchTermFilter.php
@@ -1,26 +1,7 @@
 <?php
 /**
- * @copyright Copyright (c) 2017 Georg Ehrke <oc.list@georgehrke.com>
- *
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
- * @author Georg Ehrke <oc.list@georgehrke.com>
- * @author Roeland Jago Douma <roeland@famdouma.nl>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2017 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV\Search\Xml\Filter;
 
diff --git a/apps/dav/lib/CalDAV/Search/Xml/Request/CalendarSearchReport.php b/apps/dav/lib/CalDAV/Search/Xml/Request/CalendarSearchReport.php
index 98efe36ee43..639d0b32655 100644
--- a/apps/dav/lib/CalDAV/Search/Xml/Request/CalendarSearchReport.php
+++ b/apps/dav/lib/CalDAV/Search/Xml/Request/CalendarSearchReport.php
@@ -1,26 +1,7 @@
 <?php
 /**
- * @copyright Copyright (c) 2017 Georg Ehrke <oc.list@georgehrke.com>
- *
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
- * @author Georg Ehrke <oc.list@georgehrke.com>
- * @author Roeland Jago Douma <roeland@famdouma.nl>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2017 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV\Search\Xml\Request;
 
diff --git a/apps/dav/lib/CalDAV/Security/RateLimitingPlugin.php b/apps/dav/lib/CalDAV/Security/RateLimitingPlugin.php
index 8ee4c9cb4d3..236b5c6d99d 100644
--- a/apps/dav/lib/CalDAV/Security/RateLimitingPlugin.php
+++ b/apps/dav/lib/CalDAV/Security/RateLimitingPlugin.php
@@ -2,25 +2,9 @@
 
 declare(strict_types=1);
 
-/*
- * @copyright 2023 Christoph Wurst <christoph@winzerhof-wurst.at>
- *
- * @author 2023 Christoph Wurst <christoph@winzerhof-wurst.at>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+/**
+ * SPDX-FileCopyrightText: 2023 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 
 namespace OCA\DAV\CalDAV\Security;
diff --git a/apps/dav/lib/CalDAV/Sharing/Backend.php b/apps/dav/lib/CalDAV/Sharing/Backend.php
index 7a87f0353e7..40fb7e03e5f 100644
--- a/apps/dav/lib/CalDAV/Sharing/Backend.php
+++ b/apps/dav/lib/CalDAV/Sharing/Backend.php
@@ -2,22 +2,8 @@
 
 declare(strict_types=1);
 /**
- * @copyright 2024 Anna Larch <anna.larch@gmx.net>
- *
- * @author Anna Larch <anna.larch@gmx.net>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
- * License as published by the Free Software Foundation; either
- * version 3 of the License, or any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU AFFERO GENERAL PUBLIC LICENSE for more details.
- *
- * You should have received a copy of the GNU Affero General Public
- * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+ * SPDX-FileCopyrightText: 2024 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 
 namespace OCA\DAV\CalDAV\Sharing;
diff --git a/apps/dav/lib/CalDAV/Sharing/Service.php b/apps/dav/lib/CalDAV/Sharing/Service.php
index cdf8c892ab5..7867b8d1adb 100644
--- a/apps/dav/lib/CalDAV/Sharing/Service.php
+++ b/apps/dav/lib/CalDAV/Sharing/Service.php
@@ -2,22 +2,8 @@
 
 declare(strict_types=1);
 /**
- * @copyright 2024 Anna Larch <anna.larch@gmx.net>
- *
- * @author Anna Larch <anna.larch@gmx.net>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
- * License as published by the Free Software Foundation; either
- * version 3 of the License, or any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU AFFERO GENERAL PUBLIC LICENSE for more details.
- *
- * You should have received a copy of the GNU Affero General Public
- * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+ * SPDX-FileCopyrightText: 2024 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 
 namespace OCA\DAV\CalDAV\Sharing;
diff --git a/apps/dav/lib/CalDAV/Status/StatusService.php b/apps/dav/lib/CalDAV/Status/StatusService.php
index ed2c233055c..be8ad90dd45 100644
--- a/apps/dav/lib/CalDAV/Status/StatusService.php
+++ b/apps/dav/lib/CalDAV/Status/StatusService.php
@@ -3,25 +3,8 @@
 declare(strict_types=1);
 
 /**
- * @copyright 2023 Anna Larch <anna.larch@gmx.net>
- *
- * @author Anna Larch <anna.larch@gmx.net>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2023 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV\Status;
 
diff --git a/apps/dav/lib/CalDAV/TimezoneService.php b/apps/dav/lib/CalDAV/TimezoneService.php
index 1b8855a7215..93f19be1b55 100644
--- a/apps/dav/lib/CalDAV/TimezoneService.php
+++ b/apps/dav/lib/CalDAV/TimezoneService.php
@@ -2,25 +2,9 @@
 
 declare(strict_types=1);
 
-/*
- * @copyright 2023 Christoph Wurst <christoph@winzerhof-wurst.at>
- *
- * @author 2023 Christoph Wurst <christoph@winzerhof-wurst.at>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+/**
+ * SPDX-FileCopyrightText: 2023 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 
 namespace OCA\DAV\CalDAV;
diff --git a/apps/dav/lib/CalDAV/Trashbin/DeletedCalendarObject.php b/apps/dav/lib/CalDAV/Trashbin/DeletedCalendarObject.php
index b1a3fea21b7..3ef147fe200 100644
--- a/apps/dav/lib/CalDAV/Trashbin/DeletedCalendarObject.php
+++ b/apps/dav/lib/CalDAV/Trashbin/DeletedCalendarObject.php
@@ -3,25 +3,8 @@
 declare(strict_types=1);
 
 /**
- * @copyright 2021 Christoph Wurst <christoph@winzerhof-wurst.at>
- *
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2021 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV\Trashbin;
 
diff --git a/apps/dav/lib/CalDAV/Trashbin/DeletedCalendarObjectsCollection.php b/apps/dav/lib/CalDAV/Trashbin/DeletedCalendarObjectsCollection.php
index 5362b45ee7b..abf5f001e71 100644
--- a/apps/dav/lib/CalDAV/Trashbin/DeletedCalendarObjectsCollection.php
+++ b/apps/dav/lib/CalDAV/Trashbin/DeletedCalendarObjectsCollection.php
@@ -3,25 +3,8 @@
 declare(strict_types=1);
 
 /**
- * @copyright 2021 Christoph Wurst <christoph@winzerhof-wurst.at>
- *
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2021 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV\Trashbin;
 
diff --git a/apps/dav/lib/CalDAV/Trashbin/Plugin.php b/apps/dav/lib/CalDAV/Trashbin/Plugin.php
index 8a661732f19..f3c8342c475 100644
--- a/apps/dav/lib/CalDAV/Trashbin/Plugin.php
+++ b/apps/dav/lib/CalDAV/Trashbin/Plugin.php
@@ -3,25 +3,8 @@
 declare(strict_types=1);
 
 /**
- * @copyright 2021 Christoph Wurst <christoph@winzerhof-wurst.at>
- *
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2021 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV\Trashbin;
 
diff --git a/apps/dav/lib/CalDAV/Trashbin/RestoreTarget.php b/apps/dav/lib/CalDAV/Trashbin/RestoreTarget.php
index 31331957c49..6641148de2b 100644
--- a/apps/dav/lib/CalDAV/Trashbin/RestoreTarget.php
+++ b/apps/dav/lib/CalDAV/Trashbin/RestoreTarget.php
@@ -3,25 +3,8 @@
 declare(strict_types=1);
 
 /**
- * @copyright 2021 Christoph Wurst <christoph@winzerhof-wurst.at>
- *
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2021 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV\Trashbin;
 
diff --git a/apps/dav/lib/CalDAV/Trashbin/TrashbinHome.php b/apps/dav/lib/CalDAV/Trashbin/TrashbinHome.php
index e9bf6da19e8..a1958bb2794 100644
--- a/apps/dav/lib/CalDAV/Trashbin/TrashbinHome.php
+++ b/apps/dav/lib/CalDAV/Trashbin/TrashbinHome.php
@@ -3,25 +3,8 @@
 declare(strict_types=1);
 
 /**
- * @copyright 2021 Christoph Wurst <christoph@winzerhof-wurst.at>
- *
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2021 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV\Trashbin;
 
diff --git a/apps/dav/lib/CalDAV/WebcalCaching/Plugin.php b/apps/dav/lib/CalDAV/WebcalCaching/Plugin.php
index 25a68c40eb2..e93c536c846 100644
--- a/apps/dav/lib/CalDAV/WebcalCaching/Plugin.php
+++ b/apps/dav/lib/CalDAV/WebcalCaching/Plugin.php
@@ -3,26 +3,8 @@
 declare(strict_types=1);
 
 /**
- * @copyright 2018 Georg Ehrke <oc.list@georgehrke.com>
- *
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
- * @author Georg Ehrke <oc.list@georgehrke.com>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2018 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV\WebcalCaching;
 
diff --git a/apps/dav/lib/CalDAV/WebcalCaching/RefreshWebcalService.php b/apps/dav/lib/CalDAV/WebcalCaching/RefreshWebcalService.php
index 4035f345876..209365ea5e4 100644
--- a/apps/dav/lib/CalDAV/WebcalCaching/RefreshWebcalService.php
+++ b/apps/dav/lib/CalDAV/WebcalCaching/RefreshWebcalService.php
@@ -3,30 +3,8 @@
 declare(strict_types=1);
 
 /**
- * @copyright Copyright (c) 2020, Thomas Citharel <nextcloud@tcit.fr>
- * @copyright Copyright (c) 2020, leith abdulla (<online-nextcloud@eleith.com>)
- *
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
- * @author eleith <online+github@eleith.com>
- * @author Georg Ehrke <oc.list@georgehrke.com>
- * @author Joas Schilling <coding@schilljs.com>
- * @author Thomas Citharel <nextcloud@tcit.fr>
- *
- * @license GNU AGPL version 3 or any later version
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as
- * published by the Free Software Foundation, either version 3 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
+ * SPDX-FileCopyrightText: 2020 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 namespace OCA\DAV\CalDAV\WebcalCaching;