license: add more license headers

16 files changed, 167 insertions, 1 deletions

diff --git a/.clang-format b/.clang-format
index 187d49c..98b4862 100644
--- a/.clang-format
+++ b/.clang-format
@@ -1,4 +1,7 @@
----
+# SPDX-FileCopyrightText: 2025 Felix Morgner <felix.morgner@gmail.com>
+# SPDX-License-Identifier: CC0-1.0
+
+---
 Language: Cpp
 
 AccessModifierOffset: -2
diff --git a/.clangd b/.clangd
index 2c38de5..08ec78d 100644
--- a/.clangd
+++ b/.clangd
@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2025 Felix Morgner <felix.morgner@gmail.com>
+# SPDX-License-Identifier: CC0-1.0
+
 CompileFlags:
   Remove: [-fmodules-ts, -fdeps-format=*, -fmodule-mapper=*, -fcondition-coverage]
 Diagnostics:
diff --git a/.gitignore b/.gitignore
index 2632a53..70027bb 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2025 Felix Morgner <felix.morgner@gmail.com>
+# SPDX-License-Identifier: CC0-1.0
+
 /.cache
 /build
 /ch.arknet.Turns
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index faea96e..8df6d7b 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2025 Felix Morgner <felix.morgner@gmail.com>
+# SPDX-License-Identifier: CC0-1.0
+
 stages:
   - build
   - coverage
diff --git a/.gitmodules b/.gitmodules
index a29ece2..92078e8 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2025 Felix Morgner <felix.morgner@gmail.com>
+# SPDX-License-Identifier: CC0-1.0
+
 [submodule "deps/libadwaitamm"]
 	path = deps/libadwaitamm
 	url = ../libadwaitamm.git
diff --git a/.lcovrc b/.lcovrc
index d9a5850..d189cb5 100644
--- a/.lcovrc
+++ b/.lcovrc
@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2025 Felix Morgner <felix.morgner@gmail.com>
+# SPDX-License-Identifier: CC0-1.0
+
 #lcov -c -o cov.info -d build -b .
 
 exclude = /usr/include/*
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 62e103d..b56670c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2025 Felix Morgner <felix.morgner@gmail.com>
+# SPDX-License-Identifier: LGPL-2.1-only
+
 cmake_minimum_required(VERSION "3.31.0")
 
 project("turns"
diff --git a/LICENSES/CC0-1.0.txt b/LICENSES/CC0-1.0.txt
new file mode 100644
index 0000000..0e259d4
--- /dev/null
+++ b/LICENSES/CC0-1.0.txt
@@ -0,0 +1,121 @@
+Creative Commons Legal Code
+
+CC0 1.0 Universal
+
+    CREATIVE COMMONS CORPORATION IS NOT A LAW FIRM AND DOES NOT PROVIDE
+    LEGAL SERVICES. DISTRIBUTION OF THIS DOCUMENT DOES NOT CREATE AN
+    ATTORNEY-CLIENT RELATIONSHIP. CREATIVE COMMONS PROVIDES THIS
+    INFORMATION ON AN "AS-IS" BASIS. CREATIVE COMMONS MAKES NO WARRANTIES
+    REGARDING THE USE OF THIS DOCUMENT OR THE INFORMATION OR WORKS
+    PROVIDED HEREUNDER, AND DISCLAIMS LIABILITY FOR DAMAGES RESULTING FROM
+    THE USE OF THIS DOCUMENT OR THE INFORMATION OR WORKS PROVIDED
+    HEREUNDER.
+
+Statement of Purpose
+
+The laws of most jurisdictions throughout the world automatically confer
+exclusive Copyright and Related Rights (defined below) upon the creator
+and subsequent owner(s) (each and all, an "owner") of an original work of
+authorship and/or a database (each, a "Work").
+
+Certain owners wish to permanently relinquish those rights to a Work for
+the purpose of contributing to a commons of creative, cultural and
+scientific works ("Commons") that the public can reliably and without fear
+of later claims of infringement build upon, modify, incorporate in other
+works, reuse and redistribute as freely as possible in any form whatsoever
+and for any purposes, including without limitation commercial purposes.
+These owners may contribute to the Commons to promote the ideal of a free
+culture and the further production of creative, cultural and scientific
+works, or to gain reputation or greater distribution for their Work in
+part through the use and efforts of others.
+
+For these and/or other purposes and motivations, and without any
+expectation of additional consideration or compensation, the person
+associating CC0 with a Work (the "Affirmer"), to the extent that he or she
+is an owner of Copyright and Related Rights in the Work, voluntarily
+elects to apply CC0 to the Work and publicly distribute the Work under its
+terms, with knowledge of his or her Copyright and Related Rights in the
+Work and the meaning and intended legal effect of CC0 on those rights.
+
+1. Copyright and Related Rights. A Work made available under CC0 may be
+protected by copyright and related or neighboring rights ("Copyright and
+Related Rights"). Copyright and Related Rights include, but are not
+limited to, the following:
+
+  i. the right to reproduce, adapt, distribute, perform, display,
+     communicate, and translate a Work;
+ ii. moral rights retained by the original author(s) and/or performer(s);
+iii. publicity and privacy rights pertaining to a person's image or
+     likeness depicted in a Work;
+ iv. rights protecting against unfair competition in regards to a Work,
+     subject to the limitations in paragraph 4(a), below;
+  v. rights protecting the extraction, dissemination, use and reuse of data
+     in a Work;
+ vi. database rights (such as those arising under Directive 96/9/EC of the
+     European Parliament and of the Council of 11 March 1996 on the legal
+     protection of databases, and under any national implementation
+     thereof, including any amended or successor version of such
+     directive); and
+vii. other similar, equivalent or corresponding rights throughout the
+     world based on applicable law or treaty, and any national
+     implementations thereof.
+
+2. Waiver. To the greatest extent permitted by, but not in contravention
+of, applicable law, Affirmer hereby overtly, fully, permanently,
+irrevocably and unconditionally waives, abandons, and surrenders all of
+Affirmer's Copyright and Related Rights and associated claims and causes
+of action, whether now known or unknown (including existing as well as
+future claims and causes of action), in the Work (i) in all territories
+worldwide, (ii) for the maximum duration provided by applicable law or
+treaty (including future time extensions), (iii) in any current or future
+medium and for any number of copies, and (iv) for any purpose whatsoever,
+including without limitation commercial, advertising or promotional
+purposes (the "Waiver"). Affirmer makes the Waiver for the benefit of each
+member of the public at large and to the detriment of Affirmer's heirs and
+successors, fully intending that such Waiver shall not be subject to
+revocation, rescission, cancellation, termination, or any other legal or
+equitable action to disrupt the quiet enjoyment of the Work by the public
+as contemplated by Affirmer's express Statement of Purpose.
+
+3. Public License Fallback. Should any part of the Waiver for any reason
+be judged legally invalid or ineffective under applicable law, then the
+Waiver shall be preserved to the maximum extent permitted taking into
+account Affirmer's express Statement of Purpose. In addition, to the
+extent the Waiver is so judged Affirmer hereby grants to each affected
+person a royalty-free, non transferable, non sublicensable, non exclusive,
+irrevocable and unconditional license to exercise Affirmer's Copyright and
+Related Rights in the Work (i) in all territories worldwide, (ii) for the
+maximum duration provided by applicable law or treaty (including future
+time extensions), (iii) in any current or future medium and for any number
+of copies, and (iv) for any purpose whatsoever, including without
+limitation commercial, advertising or promotional purposes (the
+"License"). The License shall be deemed effective as of the date CC0 was
+applied by Affirmer to the Work. Should any part of the License for any
+reason be judged legally invalid or ineffective under applicable law, such
+partial invalidity or ineffectiveness shall not invalidate the remainder
+of the License, and in such case Affirmer hereby affirms that he or she
+will not (i) exercise any of his or her remaining Copyright and Related
+Rights in the Work or (ii) assert any associated claims and causes of
+action with respect to the Work, in either case contrary to Affirmer's
+express Statement of Purpose.
+
+4. Limitations and Disclaimers.
+
+ a. No trademark or patent rights held by Affirmer are waived, abandoned,
+    surrendered, licensed or otherwise affected by this document.
+ b. Affirmer offers the Work as-is and makes no representations or
+    warranties of any kind concerning the Work, express, implied,
+    statutory or otherwise, including without limitation warranties of
+    title, merchantability, fitness for a particular purpose, non
+    infringement, or the absence of latent or other defects, accuracy, or
+    the present or absence of errors, whether or not discoverable, all to
+    the greatest extent permissible under applicable law.
+ c. Affirmer disclaims responsibility for clearing rights of other persons
+    that may apply to the Work or any use thereof, including without
+    limitation any person's Copyright and Related Rights in the Work.
+    Further, Affirmer disclaims responsibility for obtaining any necessary
+    consents, permissions or other rights required for any use of the
+    Work.
+ d. Affirmer understands and acknowledges that Creative Commons is not a
+    party to this document and has no duty or obligation with respect to
+    this CC0 or use of the Work.
diff --git a/ci/Containerfile b/ci/Containerfile
index b6c465c..029c948 100644
--- a/ci/Containerfile
+++ b/ci/Containerfile
@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2025 Felix Morgner <felix.morgner@gmail.com>
+# SPDX-License-Identifier: CC0-1.0
+
 FROM docker.io/archlinux:base-devel
 
 LABEL org.opencontainers.image.title="turns CI image"
diff --git a/ci/etc/locale.gen b/ci/etc/locale.gen
index c7e71f4..f08356c 100644
--- a/ci/etc/locale.gen
+++ b/ci/etc/locale.gen
@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2025 Felix Morgner <felix.morgner@gmail.com>
+# SPDX-License-Identifier: CC0-1.0
+
 de_AT.UTF-8 UTF-8  
 de_CH.UTF-8 UTF-8  
 de_DE.UTF-8 UTF-8  
diff --git a/cmake/Modules/EnableCoverage.cmake b/cmake/Modules/EnableCoverage.cmake
index 74dfe38..dcf6c5f 100644
--- a/cmake/Modules/EnableCoverage.cmake
+++ b/cmake/Modules/EnableCoverage.cmake
@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2025 Felix Morgner <felix.morgner@gmail.com>
+# SPDX-License-Identifier: LGPL-2.1-only
+
 function(enable_coverage TARGET)
   target_compile_options("${TARGET}" PRIVATE
     "$<$<AND:$<CXX_COMPILER_ID:GNU,Clang>,$<CONFIG:Debug>>:-fcondition-coverage>"
diff --git a/cmake/Modules/GlibCompileResources.cmake b/cmake/Modules/GlibCompileResources.cmake
index 8d10c1a..3922b92 100644
--- a/cmake/Modules/GlibCompileResources.cmake
+++ b/cmake/Modules/GlibCompileResources.cmake
@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2025 Felix Morgner <felix.morgner@gmail.com>
+# SPDX-License-Identifier: LGPL-2.1-only
+
 find_program(GLIB_COMPILE_RESOURCES
   NAMES "glib-compile-resources"
   REQUIRED
diff --git a/cmake/Modules/GlibCompileSchemas.cmake b/cmake/Modules/GlibCompileSchemas.cmake
index 1ffbd39..90f6a10 100644
--- a/cmake/Modules/GlibCompileSchemas.cmake
+++ b/cmake/Modules/GlibCompileSchemas.cmake
@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2025 Felix Morgner <felix.morgner@gmail.com>
+# SPDX-License-Identifier: LGPL-2.1-only
+
 find_program(GLIB_COMPILE_SCHEMAS_BIN
   NAMES "glib-compile-schemas"
   REQUIRED
diff --git a/cmake/Modules/GlibIntrospection.cmake b/cmake/Modules/GlibIntrospection.cmake
index ffec754..f2f1b91 100644
--- a/cmake/Modules/GlibIntrospection.cmake
+++ b/cmake/Modules/GlibIntrospection.cmake
@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2025 Felix Morgner <felix.morgner@gmail.com>
+# SPDX-License-Identifier: LGPL-2.1-only
+
 include_guard()
 
 find_program(G_IR_SCANNER_BIN
diff --git a/cmake/Modules/GlibMkenums.cmake b/cmake/Modules/GlibMkenums.cmake
index c3d75e6..f3f29d9 100644
--- a/cmake/Modules/GlibMkenums.cmake
+++ b/cmake/Modules/GlibMkenums.cmake
@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2025 Felix Morgner <felix.morgner@gmail.com>
+# SPDX-License-Identifier: LGPL-2.1-only
+
 include_guard()
 
 find_program(GLIB_MKENUMS_BIN
diff --git a/lib/.gitignore b/lib/.gitignore
index 0050be3..920b79d 100644
--- a/lib/.gitignore
+++ b/lib/.gitignore
@@ -1,2 +1,5 @@
+# SPDX-FileCopyrightText: 2025 Felix Morgner <felix.morgner@gmail.com>
+# SPDX-License-Identifier: CC0-1.0
+
 turns-enums.c
 turns-enums.h
\ No newline at end of file