Change OAI license to CSSL v1.0 (and others)

- all RAN code, CI code, configuration files, dockerfiles, in CSSL v1.0
- all deployment code (openshift, charts, ancillary files like shell
  scripts), in MIT
- documentation in CC-BY-4.0
- exceptions might apply and are listed in NOTICE
- there is a new LICENSES folder with all licenses
- CONTRIBUTIONS.md has been updated accordingly

For automated changes based on OAI PL v1.1:

    perl -i~ -0pe 's/\/\*.*Licensed to the OpenAirInterface.*openairinterface.org\n#?/\/*\n * SPDX-License-Identifier: LicenseRef-CSSL-1.0\n/s' **/*.{c,h,cpp}
    perl -i~ -0pe 's/\/\*.*Licensed to the OpenAirInterface.*openairinterface.org\n#?/\/*\n * SPDX-License-Identifier: LicenseRef-CSSL-1.0\n/s' **/*.ts
    perl -i~ -0pe 's/<!--.*Licensed to the OpenAirInterface.*openairinterface.org\n.*-->/<!-- SPDX-License-Identifier: LicenseRef-CSSL-1.0 -->/s' **/*.xml

The rest (cmake, files with missing license, cmake) manually.

tests/CMakeLists.txt

@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: LicenseRef-CSSL-1.0
+
 add_subdirectory(nr-cuup)
 add_subdirectory(nr-cu-nrppa)
 add_subdirectory(nr-ue-nas-simulator)

tests/nr-cu-nrppa/CMakeLists.txt

@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: LicenseRef-CSSL-1.0
+
 add_executable(nr-cu-nrppa-test nr-cu-nrppa.c
                ${OPENAIR2_DIR}/GNB_APP/gnb_config_common.c
                ${OPENAIR2_DIR}/GNB_APP/gnb_config_ng.c)

tests/nr-cu-nrppa/README.md

@@ -1,3 +1,5 @@
+<!-- SPDX-License-Identifier: CC-BY-4.0 -->
+
 This is a simple standalone tester for NRPPA and NGAP positioning messages. It connects to the AMF to perform NGAP and NRPPA encoding/decoding and validates the exchange of positioning data.
 
 [[_TOC_]]

tests/nr-cu-nrppa/nr-cu-nrppa.c

@@ -1,22 +1,5 @@
 /*
- * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
- * contributor license agreements.  See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The OpenAirInterface Software Alliance licenses this file to You under
- * the OAI Public License, Version 1.1  (the "License"); you may not use this file
- * except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.openairinterface.org/?page_id=698
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *-------------------------------------------------------------------------------
- * For more information about the OpenAirInterface (OAI) Software Alliance:
- *      contact@openairinterface.org
+ * SPDX-License-Identifier: LicenseRef-CSSL-1.0
  */
 
 #include "executables/softmodem-common.h"

tests/nr-cu-nrppa/nr-nrppa-test.conf

@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: LicenseRef-CSSL-1.0
+
 Active_gNBs = ( "gNB-OAI");
 # Asn1_verbosity, choice in: none, info, annoying
 Asn1_verbosity = "none";

tests/nr-cuup/CMakeLists.txt

@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: LicenseRef-CSSL-1.0
+
 add_executable(nr-cuup-load-test nr-cuup-load-test.c)
 add_dependencies(nr-cuup-load-test params_libconfig)
 target_link_libraries(nr-cuup-load-test PRIVATE GTPV1U ${T_LIB} utils ITTI e1ap

tests/nr-cuup/README.md

@@ -1,3 +1,5 @@
+<!-- SPDX-License-Identifier: CC-BY-4.0 -->
+
 This is a simple tester for the CU-UP. It configures the CU-UP via E1, and can
 stream data via GTP in uplink and downlink directions.
 

tests/nr-cuup/load-test.conf

@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: LicenseRef-CSSL-1.0
+
 Active_gNBs = ( "gNB-OAI");
 # Asn1_verbosity, choice in: none, info, annoying
 Asn1_verbosity = "none";

tests/nr-cuup/nr-cuup-functional-test.sh

@@ -1,4 +1,5 @@
 #!/bin/bash
+# SPDX-License-Identifier: LicenseRef-CSSL-1.0
 
 # this script takes one argument, which is the path to the CU-UP configuration
 if [ $# -ne 1 ]; then

tests/nr-cuup/nr-cuup-load-test.c

@@ -1,22 +1,5 @@
 /*
- * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
- * contributor license agreements.  See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The OpenAirInterface Software Alliance licenses this file to You under
- * the OAI Public License, Version 1.1  (the "License"); you may not use this file
- * except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.openairinterface.org/?page_id=698
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *-------------------------------------------------------------------------------
- * For more information about the OpenAirInterface (OAI) Software Alliance:
- *      contact@openairinterface.org
+ * SPDX-License-Identifier: LicenseRef-CSSL-1.0
  */
 
 #include <stdio.h>

tests/nr-ue-nas-simulator/CMakeLists.txt

@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: LicenseRef-CSSL-1.0
+
 add_executable(nr-ue-nas-simulator-test nr-ue-nas-simulator.c
                ${OPENAIR2_DIR}/GNB_APP/gnb_config_common.c
                ${OPENAIR2_DIR}/GNB_APP/gnb_config_ng.c)

tests/nr-ue-nas-simulator/README.md

@@ -1,3 +1,5 @@
+<!-- SPDX-License-Identifier: CC-BY-4.0 -->
+
 This is a simple standalone tester for 5G UE NAS signaling and NGAP messages. It connects to the AMF to perform NGAP and NAS encoding/decoding and validates the UE Registration and PDU Session Establishment processes without the overhead of a full Radio Access Network (PHY/MAC/RLC).
 
 [[_TOC_]]

tests/nr-ue-nas-simulator/nr-ue-nas-simulator.c

@@ -1,22 +1,5 @@
 /*
- * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
- * contributor license agreements.  See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The OpenAirInterface Software Alliance licenses this file to You under
- * the OAI Public License, Version 1.1  (the "License"); you may not use this file
- * except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.openairinterface.org/?page_id=698
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *-------------------------------------------------------------------------------
- * For more information about the OpenAirInterface (OAI) Software Alliance:
- *      contact@openairinterface.org
+ * SPDX-License-Identifier: LicenseRef-CSSL-1.0
  */
 
 #include "executables/softmodem-common.h"

tests/nr-ue-nas-simulator/test.conf

@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: LicenseRef-CSSL-1.0
+
 Active_gNBs = ( "gNB-OAI");
 # Asn1_verbosity, choice in: none, info, annoying
 Asn1_verbosity = "none";