fix: Broken error checking

Signed-off-by: Jitpanu Maneeratpongsuk <jitpanu.maneeratpongsuk@rwth-aachen.de>

.clang-format

@@ -0,0 +1,9 @@
+# Author: Steffen Vogel <steffen.vogel@opal-rt.com>
+# SPDX-FileCopyrightText: 2023 OPAL-RT Germany GmbH
+# SPDX-License-Identifier: Apache-2.0
+---
+BasedOnStyle: LLVM
+
+# Disable automatic line-breaks in comments
+# as this breaks SPDX headers
+ReflowComments: false

.clangd

@@ -0,0 +1,6 @@
+# Author: Steffen Vogel <steffen.vogel@opal-rt.com>
+# SPDX-FileCopyrightText: 2023 OPAL-RT Germany GmbH
+# SPDX-License-Identifier: Apache-2.0
+---
+Diagnostics:
+  UnusedIncludes: Strict

.devcontainer/devcontainer.json

@@ -1,20 +1,28 @@
 // For format details, see https://aka.ms/vscode-remote/devcontainer.json or this file's README at:
 // https://github.com/microsoft/vscode-dev-containers/tree/v0.195.0/containers/cpp
 {
-	"name": "VILLASnode",
-	"image": "registry.git.rwth-aachen.de/acs/public/villas/node/dev-vscode:master",
-	// Uncomment to build the devcontainer locally
-	// "build": {
-	// 	"dockerfile": "../packaging/docker/Dockerfile.fedora",
-	// 	"target": "dev-vscode",
-	// 	"context": ".."
-	// },
-	"remoteUser": "villas",
-	"runArgs": [ "--privileged", "--security-opt", "seccomp=unconfined"],
-
-	"extensions": [
-		"ms-vscode.cpptools",
-		"ms-vscode.cmake-tools",
-		"EditorConfig.EditorConfig"
-	],
+  "name": "VILLASnode",
+  "image": "registry.git.rwth-aachen.de/acs/public/villas/node/dev-vscode",
+  // Uncomment to build the devcontainer locally
+  // "build": {
+  // 	"dockerfile": "../packaging/docker/Dockerfile.fedora",
+  // 	"target": "dev-vscode",
+  // 	"context": ".."
+  // },
+  "remoteUser": "villas",
+  "runArgs": [
+    "--privileged",
+    "--security-opt",
+    "seccomp=unconfined"
+  ],
+  "customizations": {
+    "vscode": {
+      "extensions": [
+        "ms-vscode.cpptools-extension-pack",
+        "llvm-vs-code-extensions.vscode-clangd",
+        "xaver.clang-format",
+        "EditorConfig.EditorConfig"
+      ]
+    }
+  }
 }

.dockerignore

@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
+# SPDX-License-Identifier: Apache-2.0
+
 build/
 build_*/
 packaging/docker/Dockerfile.*

.editorconfig

@@ -1,22 +1,31 @@
 # EditorConfig is awesome: http://EditorConfig.org
+# SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
+# SPDX-License-Identifier: Apache-2.0
 
 # top-most EditorConfig file
 root = true
 
 # Unix-style newlines with a newline ending every file
 [*]
+charset = utf-8
 end_of_line = lf
 insert_final_newline = true
+trim_trailing_whitespace=true
 
 # Matches multiple files with brace expansion notation
 # Set default charset
-[{etc,include,lib,plugins,src,tests,tools,common}/**.{c,h,proto,cpp,hpp,h.in,hpp.in}]
-charset = utf-8
-indent_style = tab
-indent_size = 8
-trim_trailing_whitespace=true
+[*.{c,h,proto,cpp,hpp,h.in,hpp.in}]
+indent_style = space
+indent_size = 2
+
+[*.py]
+indent_style = space
+indent_size = 4
 
 [*.conf]
-charset = utf-8
-indent_style = tab
-indent_size = 8
+indent_style = space
+indent_size = 4
+
+[*.{nix,json}]
+indent_style = space
+indent_size = 2

.envrc

@@ -0,0 +1,4 @@
+# SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
+# SPDX-License-Identifier: Apache-2.0
+
+use flake

.git-blame-ignore-revs

@@ -0,0 +1,21 @@
+# Author: Steffen Vogel <steffen.vogel@opal-rt.com>
+# SPDX-FileCopyrightText: 2023 OPAL-RT Germany GmbH
+# SPDX-License-Identifier: Apache-2.0
+
+# Introduced clang-format
+aa16979fdde7cd377977c38eaee02062c3908515
+
+# Make project REUSE compliant
+0735eb0f89c976ba8db7abeae7814060fb5dfe3c
+
+# Update Steffens mail address
+7eec1bb75339c60cefe5e9e558d9394e0cceecb6
+
+# Introduced clang-format in common/
+5324b788bdd93b3e142a9f53b931dbfc8c3ed39d
+
+# Make project REUSE compliant in common/
+b1e8cd81da9a3e3d27db27d49d265afc53e0ce4d
+
+# Update Steffens mail address in common/
+6427fae1e4ca0467e09688d56cec0dcd7d5e600d

.gitignore

@@ -1,20 +1,29 @@
+# SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
+# SPDX-License-Identifier: Apache-2.0
+
 /build*/
 *~
-*.swp
 .clang_complete
 .project
 .cproject
 .settings/
 .vscode/
+.direnv/
+.cache/
 
+*.swp
+*.pyc
+*.a
+*.o
+*.so
+*.user
 *.egg-info/
+compile_commands.json
 
 python/dist/
+python/.eggs/
 
 # YouCompleteMe
 .ycm_extra_conf.py
 
-*.pyc
-
-python/.eggs/
-go/lib/_obj/
+graph.dot

.gitlab-ci.yml

@@ -1,122 +1,163 @@
+# SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
+# SPDX-License-Identifier: Apache-2.0
+
 variables:
   GIT_SUBMODULE_STRATEGY: recursive
   GIT_DEPTH: 0
-  DISTRO: fedora # standard distro
+  DISTRO: fedora # Standard distribution
   DOCKER_FILE: packaging/docker/Dockerfile.${DISTRO}
   DOCKER_TAG: ${CI_COMMIT_REF_NAME}
   DOCKER_IMAGE: registry.git.rwth-aachen.de/acs/public/villas/node
   DOCKER_IMAGE_DEV: ${DOCKER_IMAGE}/dev-${DISTRO}
   DOCKER_CLI_EXPERIMENTAL: enabled
-  MAKE_OPTS: "-j16"
-  CMAKE_OPTS: "-DWITH_FPGA=OFF"
+  CMAKE_BUILD_OPTS: "--parallel 16"
+  CMAKE_EXTRA_OPTS: "-DCMAKE_BUILD_TYPE=Release -DVILLAS_COMPILE_WARNING_AS_ERROR=ON"
 
 stages:
-- prepare
-- build
-- test
-- packaging
-- deploy
-- latest
+  - prepare
+  - build
+  - test
+  - packaging
+  - deploy
+  - latest
 
 # Stage: prepare
-##############################################################################
 
 # Build docker image which is used to build & test VILLASnode
 prepare:docker:
   stage: prepare
-  image: docker:20.10
+  before_script:
+    - docker login -u ${CI_REGISTRY_USER} -p ${CI_REGISTRY_PASSWORD} ${CI_REGISTRY}
   script:
-  - docker build ${DOCKER_OPTS}
+    - docker build ${DOCKER_OPTS}
       --file ${DOCKER_FILE}
       --tag ${DOCKER_IMAGE_DEV}:${DOCKER_TAG}
-      --target dev .
+      --target ${TARGET} .
+    - docker push ${DOCKER_IMAGE_DEV}:${DOCKER_TAG}
+  variables:
+    TARGET: dev
   parallel:
     matrix:
-    - DISTRO: [ ubuntu, debian, rocky ]
-    - DISTRO: fedora
-      DOCKER_OPTS: --tag ${DOCKER_IMAGE}/dev:${CI_COMMIT_REF_NAME}
-    - DISTRO: fedora
-      DOCKER_FILE: packaging/docker/Dockerfile.fedora-minimal
-      DOCKER_IMAGE_DEV: ${DOCKER_IMAGE}/dev-fedora-minimal
-
+      - DISTRO: [ubuntu, debian, rocky]
+      - DISTRO: fedora
+        DOCKER_OPTS: --tag ${DOCKER_IMAGE}/dev:${DOCKER_TAG}
+      - DISTRO: fedora
+        DOCKER_FILE: packaging/docker/Dockerfile.fedora-minimal
+        DOCKER_IMAGE_DEV: ${DOCKER_IMAGE}/dev-fedora-minimal
+      - DISTRO: fedora
+        TARGET: dev-vscode
+        DOCKER_IMAGE_DEV: ${DOCKER_IMAGE}/dev-vscode
   tags:
-  - docker
+    - docker-image-builder
 
 # Stage: build
-##############################################################################
 
 build:source:
   stage: build
+  needs: ["prepare:docker"]
   image: ${DOCKER_IMAGE_DEV}:${DOCKER_TAG}
   script:
-  - mkdir -p build && cd build
-  - cmake ${CMAKE_OPTS} ${CMAKE_EXTRA_OPTS} ..
-  - make ${MAKE_OPTS}
+    - cmake -S . -B build ${CMAKE_OPTS} ${CMAKE_EXTRA_OPTS}
+    - cmake --build build ${CMAKE_BUILD_OPTS}
   artifacts:
     expire_in: 1 week
     paths:
-    - build/
+      - build/
   variables:
     CMAKE: cmake
   parallel:
     matrix:
-    - DISTRO: [ fedora, fedora-minimal, debian, rocky, ubuntu ]
-    - DISTRO: fedora-minimal
-      CMAKE_EXTRA_OPTS: -DWITH_API=OFF
-                  -DWITH_CLIENTS=OFF
-                  -DWITH_CONFIG=OFF
-                  -DWITH_DOC=OFF
-                  -DWITH_FPGA=OFF
-                  -DWITH_GRAPHVIZ=OFF
-                  -DWITH_HOOKS=OFF
-                  -DWITH_LUA=OFF
-                  -DWITH_OPENMP=OFF
-                  -DWITH_PLUGINS=OFF
-                  -DWITH_SRC=OFF
-                  -DWITH_TESTS=OFF
-                  -DWITH_TOOLS=OFF
-                  -DWITH_WEB=OFF
-                  -DCMAKE_MODULE_PATH=/usr/local/lib64/cmake
-                  -DCMAKE_PREFIX_PATH=/usr/local
-  tags:
-  - docker
+      - DISTRO: [fedora, fedora-minimal, debian, rocky, ubuntu]
+      - DISTRO: fedora-minimal
+        CMAKE_EXTRA_OPTS: -DVILLAS_COMPILE_WARNING_AS_ERROR=ON
+          -DWITH_API=OFF
+          -DWITH_CLIENTS=OFF
+          -DWITH_CONFIG=OFF
+          -DWITH_DOC=OFF
+          -DWITH_FPGA=OFF
+          -DWITH_GRAPHVIZ=OFF
+          -DWITH_HOOKS=OFF
+          -DWITH_LUA=OFF
+          -DWITH_OPENMP=OFF
+          -DWITH_PLUGINS=OFF
+          -DWITH_SRC=OFF
+          -DWITH_TESTS=OFF
+          -DWITH_TOOLS=OFF
+          -DWITH_WEB=OFF
+          -DCMAKE_MODULE_PATH=/usr/local/lib64/cmake
+          -DCMAKE_PREFIX_PATH=/usr/local
+
+build:nix:
+  stage: build
+  image: nixos/nix
+  needs: []
+
+  artifacts:
+    when: on_success
+    access: all
+    expire_in: "1 year"
+    paths:
+      - artifacts/villas
+
+  before_script:
+    - | # Create artifacts directory
+      mkdir artifacts
+
+    - | # Configure Nix
+      echo "experimental-features = flakes nix-command" >> /etc/nix/nix.conf
+
+    # - | # Configure Attic
+    #   nix shell nixpgks#attic-client
+
+    #   attic login nulll https://cache.0l.de ${ATTIC_TOKEN}
+    #   attic use "nulll:villas"
+
+  script:
+    - nix build --print-build-logs .
+
+    - | # Build ARX bundle
+      nix bundle --out-link villas .
+      cp -L villas artifacts/villas
+
+    - | # Build Docker image
+      nix run nixpkgs#skopeo -- login \
+        --username ${CI_REGISTRY_USER} \
+        --password ${CI_REGISTRY_PASSWORD} \
+        ${CI_REGISTRY}
+
+      nix build '.#dockerImage'
+
+      nix run nixpkgs#skopeo -- copy --insecure-policy \
+        "docker-archive:./result" \
+        "docker://${DOCKER_IMAGE}:${DOCKER_TAG}-nix"
+
+  # after_script:
+  #   - | # Push whole store to cache
+  #     nix shell nixpgks#attic-client
+
+  #     attic push /nix/store/*
 
 # Stage: test
-##############################################################################
 
-test:flake8:
+test:python:
   stage: test
   script:
-  - flake8 python/
+    - cd python
+    - /venv/bin/pytest --verbose .
+    - /venv/bin/black --extend-exclude=".*(\\.pyi|_pb2.py)$" --check .
+    - /venv/bin/flake8 --extend-exclude="*.pyi,*_pb2.py" .
+    - /venv/bin/mypy .
   image: ${DOCKER_IMAGE_DEV}:${DOCKER_TAG}
-  tags:
-  - docker
   needs:
-  - job: "build:source: [fedora]"
+    - job: "build:source: [fedora]"
 
 test:cppcheck:
   stage: test
   script:
-  - cppcheck -j $(nproc)
-             --max-configs=32
-             --error-exitcode=1
-             --quiet
-             --inline-suppr
-             --enable=warning,performance,portability,missingInclude
-             --std=c++11
-             --suppress=noValidConfiguration
-             -U '_MSC_VER;_WIN32;_M_ARM'
-             -U '_MSC_VER;_WIN32;_M_AMD64;_M_X64'
-             -U '_MSC_FULL_VER;_MSC_VER'
-             -U '_MSC_BUILD;_MSC_VER'
-             -I include
-             -I common/include
-             src/ lib/ tests/unit/ | tee cppcheck.log
+    - ./tools/run-cppcheck.sh | tee cppcheck.log
   image: ${DOCKER_IMAGE_DEV}:${DOCKER_TAG}
-  tags:
-  - docker
   needs:
-  - job: "build:source: [fedora]"
+    - job: "build:source: [fedora]"
   artifacts:
     when: on_failure
     paths:
@@ -126,73 +167,64 @@ test:cppcheck:
 test:unit:
   stage: test
   image: ${DOCKER_IMAGE_DEV}:${DOCKER_TAG}
-  variables:
-    LD_PRELOAD: /usr/lib64/libSegFault.so
-    SEGFAULT_SIGNALS: all
   script:
-  - mkdir -p build && cd build
-  - cmake ${CMAKE_OPTS} ..
-  - make ${MAKE_OPTS} run-unit-tests
-  tags:
-  - docker
+    - cmake -S . -B build ${CMAKE_OPTS}
+    - cmake --build build ${CMAKE_BUILD_OPTS} --target run-unit-tests run-unit-tests-common
   needs:
-  - job: "build:source: [fedora]"
-    artifacts: true
+    - job: "build:source: [fedora]"
+      artifacts: true
 
 test:integration:
   stage: test
   image: ${DOCKER_IMAGE_DEV}:${DOCKER_TAG}
   script:
-  - mkdir -p build && cd build
-  - cmake ${CMAKE_OPTS} ..
-  - make ${MAKE_OPTS} run-integration-tests
+    - cmake -S . -B build ${CMAKE_OPTS}
+    - cmake --build build ${CMAKE_BUILD_OPTS} --target run-integration-tests
   artifacts:
     name: ${CI_PROJECT_NAME}-integration-tests-${CI_BUILD_REF}
     when: always
     paths:
-    - build/tests/integration/
+      - build/tests/integration/
   services:
-  - name: eclipse-mosquitto:2.0
-    alias: mosquitto
-    command: [ mosquitto, -c, /mosquitto-no-auth.conf ]
-  - name: rwthacs/rabbitmq
-    alias: rabbitmq
-  - name: redis:6.2
-    alias: redis
-  tags:
-  - docker
+    - name: eclipse-mosquitto:2.0
+      alias: mosquitto
+      command: [mosquitto, -c, /mosquitto-no-auth.conf]
+    - name: rwthacs/rabbitmq
+      alias: rabbitmq
+    - name: redis:6.2
+      alias: redis
   needs:
-  - job: "build:source: [fedora]"
-    artifacts: true
+    - job: "build:source: [fedora]"
+      artifacts: true
+
+test:reuse:
+  stage: test
+  needs: []
+  image:
+    name: fsfe/reuse:latest
+    entrypoint: [""]
+  script:
+    - reuse lint
 
 # Stage: packaging
-##############################################################################
 
 pkg:docker:
   stage: packaging
-  image: docker:20.10
   before_script:
-  - mkdir -p ~/.docker/cli-plugins/
-  - wget -O ~/.docker/cli-plugins/docker-buildx https://github.com/docker/buildx/releases/download/v0.6.3/buildx-v0.6.3.linux-amd64
-  - chmod a+x ~/.docker/cli-plugins/docker-buildx
-  - docker buildx create --use --name cross-platform-build --buildkitd-flags "--allow-insecure-entitlement security.insecure"
-  - docker buildx inspect --bootstrap cross-platform-build
-  - docker login -u ${CI_REGISTRY_USER} -p ${CI_REGISTRY_PASSWORD} ${CI_REGISTRY}
+    - docker login -u ${CI_REGISTRY_USER} -p ${CI_REGISTRY_PASSWORD} ${CI_REGISTRY}
   script:
-  - docker buildx build ${DOCKER_OPTS}
+    - docker build ${DOCKER_OPTS}
       --pull
-      --allow security.insecure
-      --output type=docker
       --target ${TARGET}
       --build-arg ARCH=${ARCH}
       --build-arg TRIPLET=${TRIPLET}
-      --build-arg CMAKE_OPTS="${CMAKE_OPTS}"
+      --build-arg CMAKE_OPTS="${CMAKE_OPTS} ${CMAKE_EXTRA_OPTS}"
       --platform ${PLATFORM}
       --file ${DOCKER_FILE}
       --tag ${DOCKER_IMAGE}:${DOCKER_TAG}-${ARCH} .
-  - docker push ${DOCKER_IMAGE}:${DOCKER_TAG}-${ARCH}
+    - docker push ${DOCKER_IMAGE}:${DOCKER_TAG}-${ARCH}
   tags:
-  - docker
+    - $TAG
   variables:
     TARGET: app
   parallel:
@@ -200,107 +232,106 @@ pkg:docker:
       - DISTRO: debian
         PLATFORM: linux/amd64
         ARCH: x86_64
-        TRIPLET:  x86_64-linux-gnu
-      - DISTRO: debian
-        PLATFORM: linux/arm/v7
-        ARCH: armhf
-        TRIPLET: arm-linux-gnueabihf
-        DOCKER_FILE: packaging/docker/Dockerfile.debian-multiarch
+        TRIPLET: x86_64-linux-gnu
+        TAG: docker
       - DISTRO: debian
         PLATFORM: linux/arm64/v8
         ARCH: arm64
         TRIPLET: aarch64-linux-gnu
-        DOCKER_FILE: packaging/docker/Dockerfile.debian-multiarch
-   
+        TAG: pi5
   needs: []
 
 # Stage: deploy
-##############################################################################
 
 deploy:docker:
   stage: deploy
-  image: docker:20.10
-  variables:
-    DOCKER_CLI_EXPERIMENTAL: enabled
   before_script:
-  - docker login -u ${CI_REGISTRY_USER} -p ${CI_REGISTRY_PASSWORD} ${CI_REGISTRY}
+    - docker login -u ${CI_REGISTRY_USER} -p ${CI_REGISTRY_PASSWORD} ${CI_REGISTRY}
   script:
-  - docker manifest create ${DOCKER_IMAGE}:${DOCKER_TAG}
-                           ${DOCKER_IMAGE}:${DOCKER_TAG}-x86_64
-                           ${DOCKER_IMAGE}:${DOCKER_TAG}-arm64
-                           ${DOCKER_IMAGE}:${DOCKER_TAG}-armhf
-  - docker manifest push   ${DOCKER_IMAGE}:${DOCKER_TAG}
+    - docker manifest rm ${DOCKER_IMAGE}:${DOCKER_TAG} || true
+    - docker manifest create ${DOCKER_IMAGE}:${DOCKER_TAG}
+      ${DOCKER_IMAGE}:${DOCKER_TAG}-x86_64
+      ${DOCKER_IMAGE}:${DOCKER_TAG}-arm64
+    - docker manifest push   ${DOCKER_IMAGE}:${DOCKER_TAG}
   tags:
-  - docker
+    - docker
   needs:
-  - job: "pkg:docker: [debian, linux/arm64/v8, arm64, aarch64-linux-gnu, packaging/docker/Dockerfile.debian-multiarch]"
-  - job: "pkg:docker: [debian, linux/arm/v7, armhf, arm-linux-gnueabihf, packaging/docker/Dockerfile.debian-multiarch]"
-  - job: "pkg:docker: [debian, linux/amd64, x86_64, x86_64-linux-gnu]"
+    - job: "pkg:docker: [debian, linux/amd64, x86_64, x86_64-linux-gnu, docker]"
+    - job: "pkg:docker: [debian, linux/arm64/v8, arm64, aarch64-linux-gnu, pi5]"
 
 deploy:docker-dev:
   stage: deploy
-  image: docker:20.10
   variables:
     DOCKER_CLI_EXPERIMENTAL: enabled
   before_script:
-  - docker login -u ${CI_REGISTRY_USER} -p ${CI_REGISTRY_PASSWORD} ${CI_REGISTRY}
+    - docker login -u ${CI_REGISTRY_USER} -p ${CI_REGISTRY_PASSWORD} ${CI_REGISTRY}
   script:
-  - docker push ${DOCKER_IMAGE}/dev:${DOCKER_TAG}
+    - docker push ${DOCKER_IMAGE}/dev:${DOCKER_TAG}
   tags:
-  - docker
+    - docker
   needs:
-  - job: "prepare:docker: [fedora, --tag ${DOCKER_IMAGE}/dev:${CI_COMMIT_REF_NAME}]"
+    - job: "prepare:docker: [fedora, --tag ${DOCKER_IMAGE}/dev:${DOCKER_TAG}]"
+
+deploy:docker-dev-vscode:
+  stage: deploy
+  variables:
+    DOCKER_CLI_EXPERIMENTAL: enabled
+  before_script:
+    - docker login -u ${CI_REGISTRY_USER} -p ${CI_REGISTRY_PASSWORD} ${CI_REGISTRY}
+  script:
+    - docker push ${DOCKER_IMAGE}/dev-vscode:${DOCKER_TAG}
+  tags:
+    - docker
+  needs:
+    - job: "prepare:docker: [fedora, dev-vscode, ${DOCKER_IMAGE}/dev-vscode]"
 
 # Stage: latest
-##############################################################################
 
 .latest:docker:latest: &deploy_latest_docker
   stage: latest
-  image: docker:20.10
   before_script:
-  - docker login -u ${CI_REGISTRY_USER} -p ${CI_REGISTRY_PASSWORD} ${CI_REGISTRY}
+    - docker login -u ${CI_REGISTRY_USER} -p ${CI_REGISTRY_PASSWORD} ${CI_REGISTRY}
   script:
-  - docker manifest create ${DOCKER_IMAGE}:latest
-                           ${DOCKER_IMAGE}:${DOCKER_TAG}-x86_64
-                           ${DOCKER_IMAGE}:${DOCKER_TAG}-arm64
-                           ${DOCKER_IMAGE}:${DOCKER_TAG}-armhf
-  - docker manifest push   ${DOCKER_IMAGE}:latest
+    - docker manifest rm ${DOCKER_IMAGE}:latest || true
+    - docker manifest create ${DOCKER_IMAGE}:latest
+      ${DOCKER_IMAGE}:${DOCKER_TAG}-x86_64
+      ${DOCKER_IMAGE}:${DOCKER_TAG}-arm64
+    - docker manifest push   ${DOCKER_IMAGE}:latest
   tags:
-  - docker
+    - docker
   needs:
-  - job: deploy:docker
+    - job: deploy:docker
 
 .latest:docker-dev:latest: &deploy_latest_docker_dev
   stage: latest
-  image: docker:20.10
   before_script:
-  - docker login -u ${CI_REGISTRY_USER} -p ${CI_REGISTRY_PASSWORD} ${CI_REGISTRY}
+    - docker login -u ${CI_REGISTRY_USER} -p ${CI_REGISTRY_PASSWORD} ${CI_REGISTRY}
   script:
-  - docker tag  ${DOCKER_IMAGE}/dev:${DOCKER_TAG} ${DOCKER_IMAGE}/dev:latest
-  - docker push ${DOCKER_IMAGE}/dev:latest
+    - docker tag  ${DOCKER_IMAGE}/dev:${DOCKER_TAG} ${DOCKER_IMAGE}/dev:latest
+    - docker push ${DOCKER_IMAGE}/dev:latest
   tags:
-  - docker
+    - docker
   needs:
-  - job: deploy:docker-dev
+    - job: deploy:docker-dev
 
 latest:docker:
   <<: *deploy_latest_docker
   only:
-  - "/^v\\d+(\\.\\d+)+$/" # Only on version tags
+    - "/^v\\d+(\\.\\d+)+$/" # Only on version tags
 
 latest:docker-dev:
   <<: *deploy_latest_docker_dev
   only:
-  - "/^v\\d+(\\.\\d+)+$/" # Only on version tags
+    - "/^v\\d+(\\.\\d+)+$/" # Only on version tags
 
 latest:docker:manual:
   <<: *deploy_latest_docker
   when: manual
   except:
-  - "/^v\\d+(\\.\\d+)+$/" # Only on version tags
+    - "/^v\\d+(\\.\\d+)+$/" # Only on version tags
 
 latest:docker-dev:manual:
   <<: *deploy_latest_docker_dev
   when: manual
   except:
-  - "/^v\\d+(\\.\\d+)+$/" # Only on version tags
+    - "/^v\\d+(\\.\\d+)+$/" # Only on version tags

.gitmodules

@@ -1,10 +1,16 @@
-[submodule "common"]
-	path = common
-	url = https://github.com/VILLASframework/common.git
-[submodule "fpga"]
-	path = fpga
-	url = https://github.com/VILLASframework/fpga.git
+# SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
+# SPDX-License-Identifier: Apache-2.0
+
 [submodule "packaging/live-iso/fedora-kickstarts"]
 	path = packaging/live-iso/fedora-kickstarts
 	url = https://pagure.io/fedora-kickstarts.git
 
+[submodule "fpga/thirdparty/libxil"]
+	path = fpga/thirdparty/libxil
+	url = https://github.com/VILLASframework/libxil.git
+[submodule "fpga/thirdparty/udmabuf"]
+	path = fpga/thirdparty/udmabuf
+	url = https://github.com/ikwzm/udmabuf
+[submodule "fpga/lib/gpu/gdrcopy"]
+	path = fpga/gpu/thirdparty/gdrcopy
+	url = https://github.com/daniel-k/gdrcopy.git

.mailmap

@@ -0,0 +1,60 @@
+# Author: Philipp Jungkamp <philipp.jungkamp@opal-rt.com>
+# SPDX-FileCopyrightText: 2023 OPAL-RT Germany GmbH
+# SPDX-License-Identifier: Apache-2.0
+---
+
+Anju <ameghwani@gmail.com>
+
+Dennis Potter <dennis@dennispotter.eu>
+
+Divya Laxetti <divya.laxetti@rwth-aachen.de>
+Divya Laxetti <divyalaxetti@190-001.eduroam.rwth-aachen.de>
+Divya Laxetti <laxetti.divya@gmail.com>
+
+Eyke Liegmann <eliegmann@eonerc.rwth-aachen.de>
+
+Felix Wege <fwege@eonerc.rwth-aachen.de>
+
+Georg Reinke <georg.reinke@rwth-aachen.de>
+
+Juan Pablo Noreña-Monsalve <jpnorenam@unal.edu.co>
+Juan Pablo Noreña-Monsalve <34222866+jpnorenam@users.noreply.github.com>
+
+Manuel Pitz <37443948+windrad6@users.noreply.github.com>
+Manuel Pitz <manuel.pitz@eonerc.rwth-aachen.de>
+
+Marija Stevic <mstevic@eonerc.rwth-aachen.de>
+
+Markus Grigull <web@grigull.me>
+
+Markus Mirz <mmirz@eonerc.rwth-aachen.de>
+
+Marvin Klimke <marvin.klimke@rwth-aachen.de>
+
+Niklas Eiling <niklas.eiling@eonerc.rwth-aachen.de>
+Niklas Eiling <niklas.eiling@rwth-aachen.de>
+
+Philipp Jungkamp <56401138+PJungkamp@users.noreply.github.com>
+Philipp Jungkamp <Philipp.Jungkamp@opal-rt.com>
+Philipp Jungkamp <p.jungkamp@gmail.com>
+Philipp Jungkamp <philipp.jungkamp@rwth-aachen.de>
+
+Sonja Happ <sonja.happ@eonerc.rwth-aachen.de>
+
+Sonja Kolen <skolen@eonerc.rwth-aachen.de>
+
+Steffen Vogel <post@steffenvogel.de>
+Steffen Vogel <steffen.vogel@opal-rt.com>
+Steffen Vogel <steffen.vogel@rwth-aachen.de>
+Steffen Vogel <stvogel@eonerc.rwth-aachen.de>
+Steffen Vogel <svogel2@eonerc.rwth-aachen.de>
+
+Umar Farooq <ufarooq@eonerc.rwth-aachen.de>
+
+Daniel Krebs <github@daniel-krebs.net>
+
+Iris Köster <Ikoester@eonerc.rwth-aachen.de>
+Iris Köster <ikoester@eonerc.rwth-aachen.de>
+
+Ubuntu <ubuntu@jbu-pju.osc.eonerc.rwth-aachen.de>
+root <root@iepg.ws.tudelft.net>

.reuse/dep5

@@ -0,0 +1,8 @@
+Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
+Upstream-Name: VILLASnode
+Upstream-Contact: Steffen Vogel <post@steffenvogel.de>
+Source: https://fein-aachen.org/en/projects/villas-node/
+
+Files: *.vi *.opal *.dft *.sib *.json *.ipynb *_pb2.py doc/pictures/* doc/favicon.png clients/opal-rt/rtlab-asyncip/models/send_receive/eonerc_logo.png clients/rtds/**/*.txt clients/opal-rt/hypersim-ucm/*.ecf etc/labs/lab3.pcap packaging/live-iso/files/etc/* flake.lock tests/valgrind.supp packaging/archlinux/villas-node.install
+Copyright: 2018-2023, Institute for Automation of Complex Power Systems, RWTH Aachen University
+License: Apache-2.0

CHANGELOG.md

@@ -1,296 +0,0 @@
-# Changelog
-
-All notable changes to this project will be documented in this file.
-
-The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
-and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
-
-## [0.7.1] - 2019-01-23
-
-### Fixed
-
- - Removed most of the static storage variables from libvillas and libvillas-common
-   which caused crashes with DPsim.
- - Fixed compilation with Ubuntu 16.04 and GCC 7.2.
- - Fixed broken `shmem` node-type since addition of signal defintions.
-
-### Changed
-
- - Node-types can now handle more than a single file-descriptor for poll() multiplexing.
- - Enable network emulation sub-system also for other node-types than `socket`.
-   The `rtp` node-type will support it now as well.
- - Improve readabilty of log output
-
-### Added
-
- - Initial rate-limiting support for `rtp` node-type based on
-   Additive Increase / Multiplicative Decrease (AIMD) and RTCP.
-
-## [0.7.0] - 2019-01-13
-
-### Added
-
-- A new sub-command `villas-relay` implements a client-to-client WebSocket relay.
-  It can be used as a proxy for nodes which sit behind a NAT firewall.
-- New node-types: `infiniband`, `rtp`, `uldaq`
-- VILLASnode got a similarily named Python package: `villas.node`.
-  It can be used to interact or start an VILLASnode instance. 
-
-### Changed
-
-- The syntax of the configuration file has changed in several places.
-  Most node configs are now separated into `in` and `out` sections.
-- We ported major parts of the VILLASnode code base to C++.
-- Some of the common utilities have been moved to a new repo.
-  VILLAScommon is used also by other related VILLAS components.
-  Please make sure to checkout / update the `common/` Git sub-module.
-- We build and test VILLASnode now with Fedora 29.
-
-### Fixed
-
-- All unit tests are running again. Most of the integration tests run again as well.
-- We added support for the ARM architecture.
-
-## [0.6.4] - 2018-07-18
-
-### Added
-
-- New client User Code Model (UCM) for OPAL-RT HYPERSIM digital real-time simulator
-- New node-types:
-  - `infiniband` is using the Infiniband IBverbs and RDMA CM APIs for a low latency interface between simualation nodes.
-  - `comedi` adds support for ADC and DAC cards supported by the [Comedi Linux control and measurment device interface](http://comedi.org).
-- All header files can now be imported into C++ code. Missing `extern "C"` declarations have been added.
-
-### Changed
-
-- The VILLASnode project is now built with [CMake](http://cmake.org). The old Makefile have been removed.
-- The VILLASnode project will be gradually ported to C++. The tools (`/tools/`), executables (`/src/`) and plugins (`/plugins/`) have already been convert to C++ code.
-
-## [0.6.3] - 2018-06-04
-
-### Added
-
-- The `csv` IO format has been splitted into a similar `tsv` IO format which uses tabulators instead of commas.
-- The `struct queue_signalled` supports now synchronization under Mac OS X.
-- A new `poll` setting allows the user to enable/disable the usage of `poll(2)` when reading from multiple source nodes.
-
-### Changed
-
-- Started splitting the node configuration into a send and receive side. This changes will be soon also reflected in a changed configuration file syntax.
-- Docker images are now based on Fedora 28.
-
-### Fixed
-
-- We now correctly determine with terminal size when executed in GDB or by the CI runner.
-
-## [0.6.2] - 2018-05-14
-
-### Added
-
-- A Docker application image can now be build in a single step using `make docker`. 
-
-### Changed
-
-- The IO format names have changed. They now use dots (`raw.flt32`) instead of hyphens (`raw-flt32`) in their name. Please update your configuration files accordingly.
-- The configuration of many node-types is now splitted into seperate `in` and `out` sections. Please update your configuration files accordingly.
-
-## [0.6.1] - 2018-02-17
-
-### Changed
-
-- Rewrite of IO formatting subsystem/
-
-### Added
-
-- New node-types:
-  - `mqtt` for MQTT / Mosquitto
-- A new `make help` target shows the current build configuration and available targets.
-
-### Fixed
-
-- Websocket node can now receive data from a "catch-all" connection and associate to the correct simulator
-
-## [0.6.0] - 2017-12-20
-
-### Added
-
-- New node-types:
-  - `iec61850-9-2` for IEC 61850 Sampled Values
-  - `amqp` for AMQP / RabbitMQ
-- New IO formats:
-  - Google `protobuf`
-- Added support for Unix Domain Sockets to `socket` node-type
-- Python example client using new Protobuf and UDP/Unix sockets
-- Built-in hooks can be disabled now
-- Network emulation has been improved
-  - can now load a delay distribution from the config instead from a separate file
-  - can emulate delay correlation
-  
-### Removed
-
-- Moved VILLASfpga related code into external library
-  - `libxil` dependency is dropped
-
-### Changed
-
-- Packaging of Docker and RPM has been improved
-- Upgraded Docker build containers to Fedora 27
-- Updated submodules for most dependencies
-- Use "LABEL" instead of "MAINTAINER" keyword in Dockerfiles
-
-### Fixed
-
-- Socket node-type supports now arbirarily sized packets
-- Sample data format conversion for RAW IO formats
-- Network emulation support is working again
-
-## [0.5.1] - 2017-10-23
-
-### Changed
-
-- OPAL-RT AsyncIP client is only build if libopal submodule is present
-
-### Fixed
-
-- Build warnings and errors on Ubuntu 16.04
-
-## [0.5.0] - 2017-10-18
-
-### Added
-
-- Changelog
-- InfluxDB node-type
-- Support for "add" / "any" path register modes
-
-### Fixed
-
-- Netem support is working again
-
-### Changed
-
-- `villas-pipe` now automatically generates correct seqeunce numbers
-
-## [0.4.5] - 2017-09-24
-
-### Fixed
-
-- RPM packaging to include debug symbols in `-debuginfo` package
-
-## [0.4.4] - 2017-09-24
-
-### Fixed
-
-- Invalid sequence numbers due to broken workaround
-
-## [0.4.3] - 2017-09-24
-
-### Changed
-
-- Do not abort execution of socket node fails with `sendto: invalid argument`
-
-### Fixed
-
-- Several fixes for the mux / demux re-mapping feature
-
-## [0.4.2] - 2017-09-19
-
-### Fixed
-
-- Improved stability of HTTP API
-
-## [0.4.1] - 2017-09-16
-
-## [0.4.0] - 2017-09-16
-
-### Added
-
-- API action to request status of node
-- Javascript configuration example
-- Pluggable IO format subsystem with plugins for:
-  - `csv`: Comma-separated values
-  - `json`: Javascript Object Notation
-  - `raw`: 8/16/32/64 but binary floating point and integer data
-  - `villas-human`: VILLAS human-readable format
-  - `villas-binary`: VILLAS binary wire protocol
-
-## [0.3.5] - 2017-08-10
-
-### Added
-
-- API action to restart node with new configuration
-- API action to terminate node
-
-### Fixed
-
-- VILLASnode compiles now on Ubuntu 16.04
-
-## [0.3.4] - 2017-07-28
-
-### Fixed
-
-- Several compiler warnings on CLang
-
-## [0.3.3] - 2017-07-14
-
-### Changed
-
-- Paths do not require output nodes anymore
-
-### Added
-
-- Loopback node-type
-
-### Fixed
-
-- OPAL-RT AsyncIP model for RT-LAB 11.1.x
-
-## [0.3.2] - 2017-07-07
-
-### Added
-
-- Signal generator node-type
-- Valgrind test cases
-
-## [0.3.1] - 2017-06-29
-
-### Added
-
-- ZeroMQ node-type
-- nanomsg node-type
-- Multicast support for socket node-type
-- RTDS GTNET-SKT examples
-
-## [0.3.0] - 2017-05-08
-
-
-Major changes in all parts of the software
-
-### Added
-
-- Pluggable node-types with plugins for:
-  - `file`: File / Log recording & replay
-  - `fpga`: VILLASfpga interface to Xilinx VC707 FPGA board via PCIexpress
-  - `ngsi`: FI-WARE NGSI-10 Open RESTful API for Orion Context Broker
-  - `websocket`: WebSocket support for VILLASweb
-  - `socket`: BSD network sockets
-  - `shmem`: POSIX shared memory
-- Web-mockup for demonstration of the `websocket` node-type
-
-### Removed
-
-- User documentation has been moved to separate repository: http://git.rwth-aachen.de/acs/public/villas/documentation
-
-## [0.2.0] - 2015-09-22
-
-### Added
-
-- OPAL-RT RT-LAB example demonstrating usage of AsyncIP
-- Scripts and configuration files for creating LiveUSB Fedora images
-- Travis-CI configuration
-- More user documentation
-
-## [0.1.0] - 2014-06-10
-
-### Added
-
-- Doxygen is now used to build documentation

CMakeLists.txt

@@ -1,9 +1,8 @@
 # Main CMakeLists.
 #
-# @author Steffen Vogel <post@steffenvogel.de>
-# @copyright 2014-2022, Institute for Automation of Complex Power Systems, EONERC
-# @license Apache 2.0
-###################################################################################
+# Author: Steffen Vogel <post@steffenvogel.de>
+# SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
+# SPDX-License-Identifier: Apache-2.0
 
 cmake_minimum_required(VERSION 3.14)
 
@@ -54,7 +53,7 @@ include(FindSymbol)
 include(CMakeDependentOption)
 
 add_definitions(-D_POSIX_C_SOURCE=200809L -D_GNU_SOURCE)
-add_compile_options(-Wall -Wno-unknown-pragmas -Werror -fdiagnostics-color=auto)
+add_compile_options(-Wall -Wno-unknown-pragmas -fdiagnostics-color=auto)
 
 # Check OS
 check_include_file("sys/eventfd.h" HAS_EVENTFD)
@@ -70,12 +69,12 @@ endif()
 find_package(PkgConfig REQUIRED)
 find_package(Threads REQUIRED)
 find_package(OpenMP)
-find_package(Opal)
 find_package(IBVerbs)
 find_package(RDMACM)
-find_package(spdlog)
 find_package(Etherlab)
 find_package(Lua)
+find_package(LibDataChannel)
+find_package(re)
 
 # Check for tools
 find_program(PASTE NAMES paste)
@@ -86,17 +85,10 @@ endif()
 # Check programs
 find_program(PROTOBUFC_COMPILER NAMES protoc-c)
 find_program(PROTOBUF_COMPILER NAMES protoc)
-find_program(GO NAMES go PATHS /usr/local/go/bin)
 
 # Build without any GPL-code
 option(WITHOUT_GPL "Build VILLASnode without any GPL code" OFF)
 
-# Optionally download Go toolchain
-option(DOWNLOAD_GO "Download Go toolchain" ON)
-if(NOT GO AND DOWNLOAD_GO)
-    include("${CMAKE_CURRENT_LIST_DIR}/cmake/Go.cmake")
-endif()
-
 set(ENV{PKG_CONFIG_PATH} "$ENV{PKG_CONFIG_PATH}:/usr/local/lib/pkgconfig:/usr/local/lib64/pkgconfig:/usr/local/share/pkgconfig:/usr/lib64/pkgconfig")
 
 pkg_check_modules(JANSSON IMPORTED_TARGET REQUIRED jansson>=2.13)
@@ -105,10 +97,11 @@ pkg_check_modules(PROTOBUF IMPORTED_TARGET protobuf>=2.6.0)
 pkg_check_modules(PROTOBUFC IMPORTED_TARGET libprotobuf-c>=1.1.0)
 pkg_check_modules(CRITERION IMPORTED_TARGET criterion>=2.3.1)
 pkg_check_modules(LIBNL3_ROUTE IMPORTED_TARGET libnl-route-3.0>=3.2.27)
-pkg_check_modules(LIBIEC61850 IMPORTED_TARGET libiec61850>=1.3.1)
+pkg_check_modules(LIBIEC61850 IMPORTED_TARGET libiec61850>=1.5.0)
 pkg_check_modules(LIB60870 IMPORTED_TARGET lib60870>=2.3.1)
 pkg_check_modules(LIBCONFIG IMPORTED_TARGET libconfig>=1.4.9)
 pkg_check_modules(MOSQUITTO IMPORTED_TARGET libmosquitto>=1.6.9)
+pkg_check_modules(MODBUS IMPORTED_TARGET libmodbus>=3.1.0)
 pkg_check_modules(RDKAFKA IMPORTED_TARGET rdkafka>=1.5.0)
 pkg_check_modules(HIREDIS IMPORTED_TARGET hiredis>=1.0.0)
 pkg_check_modules(REDISPP IMPORTED_TARGET redis++>=1.2.0)
@@ -124,10 +117,7 @@ pkg_check_modules(NANOMSG IMPORTED_TARGET nanomsg)
 if(NOT NANOMSG_FOUND)
     pkg_check_modules(NANOMSG IMPORTED_TARGET libnanomsg>=1.0.0)
 endif()
-pkg_check_modules(RE IMPORTED_TARGET re>=2.9.0)
-if(NOT RE_FOUND)
-    pkg_check_modules(RE IMPORTED_TARGET libre>=0.5.6)
-endif()
+
 
 if (REDISPP_FOUND)
     file(READ "${REDISPP_INCLUDEDIR}/sw/redis++/tls.h" CONTENTS)
@@ -135,6 +125,20 @@ if (REDISPP_FOUND)
         set(REDISPP_WITH_TLS ON)
     endif()
     unset(CONTENTS)
+
+    # Redis++ had a breaking change between 1.3.6 and 1.3.7
+    # Detect this change by checking if the new header exists
+    #
+    # See https://github.com/sewenew/redis-plus-plus/commit/192ebae13583ff0611e2d7666a9c1e98a2a0dc86
+    if (EXISTS "${REDISPP_INCLUDEDIR}/sw/redis++/redis_uri.h")
+        set(REDISPP_WITH_URI ON)
+    endif()
+endif()
+
+if (RABBITMQ_C_FOUND)
+    if (EXISTS "${RABBITMQ_C_INCLUDEDIR}/rabbitmq-c/amqp.h")
+        set(RABBITMQ_C_NEW_INCLUDE_DIR ON)
+    endif()
 endif()
 
 # Check if libwebsockets is build with deflate extension
@@ -145,60 +149,65 @@ else()
 endif()
 FindSymbol(${LWS_LOCATION} lws_extension_callback_pm_deflate LWS_DEFLATE_FOUND)
 
-# Check if VILLASfpga submodule is present
-if(EXISTS "${PROJECT_SOURCE_DIR}/fpga/CMakeLists.txt")
-    set(FOUND_SUBMODULE_FPGA ON)
+# Check if submodules for VILLASfpga are present
+if(EXISTS "${PROJECT_SOURCE_DIR}/fpga/thirdparty/libxil/CMakeLists.txt")
+    set(FOUND_FPGA_SUBMODULES ON)
 else()
-    set(FOUND_SUBMODULE_FPGA OFF)
+    set(FOUND_FPGA_SUBMODULES OFF)
 endif()
 
 # Build options
-cmake_dependent_option(WITH_API             "Build with remote control API"                         ON "" OFF)
-cmake_dependent_option(WITH_CLIENTS         "Build client applications"                             ON "TOPLEVEL_PROJECT" OFF)
-cmake_dependent_option(WITH_CONFIG          "Build with support for libconfig configuration syntax" ON "LIBCONFIG_FOUND" OFF)
-cmake_dependent_option(WITH_DOC             "Build documentation"                                   ON "TOPLEVEL_PROJECT" OFF)
-cmake_dependent_option(WITH_FPGA            "Build with support for VILLASfpga"                     ON "FOUND_SUBMODULE_FPGA" OFF)
-cmake_dependent_option(WITH_GO              "Build with Go"                                         ON "GO" OFF)
-cmake_dependent_option(WITH_GRAPHVIZ        "Build with Graphviz"                                   ON "CGRAPH_FOUND; GVC_FOUND" OFF)
-cmake_dependent_option(WITH_HOOKS           "Build with support for processing hook plugins"        ON "" OFF)
-cmake_dependent_option(WITH_LUA             "Build with Lua"                                        ON "LUA_FOUND" OFF)
-cmake_dependent_option(WITH_OPENMP          "Build with support for OpenMP for parallel hooks"      ON "OPENMP_FOUND" OFF)
-cmake_dependent_option(WITH_PLUGINS         "Build plugins"                                         ON "TOPLEVEL_PROJECT" OFF)
-cmake_dependent_option(WITH_SRC             "Build executables"                                     ON "TOPLEVEL_PROJECT" OFF)
-cmake_dependent_option(WITH_TESTS           "Run tests"                                             ON "TOPLEVEL_PROJECT" OFF)
-cmake_dependent_option(WITH_TOOLS           "Build auxilary tools"                                  ON "TOPLEVEL_PROJECT" OFF)
-cmake_dependent_option(WITH_WEB             "Build with internal webserver"                         ON "LIBWEBSOCKETS_FOUND" OFF)
+cmake_dependent_option(WITH_DEFAULTS        "Defaults for non required build options"               ON                 "" OFF)
 
-cmake_dependent_option(WITH_NODE_AMQP       "Build with amqp node-type"                             ON "RABBITMQ_C_FOUND" OFF)
-cmake_dependent_option(WITH_NODE_CAN        "Build with can node-type"                              ON "" OFF)
-cmake_dependent_option(WITH_NODE_COMEDI     "Build with comedi node-type"                           ON "COMEDILIB_FOUND" OFF)
-cmake_dependent_option(WITH_NODE_ETHERCAT   "Build with ethercat node-type"                         ON "ETHERLAB_FOUND;NOT WITHOUT_GPL" OFF)
-cmake_dependent_option(WITH_NODE_EXAMPLE    "Build with example node-type"                          ON "" OFF)
-cmake_dependent_option(WITH_NODE_EXEC       "Build with exec node-type"                             ON "" OFF)
-cmake_dependent_option(WITH_NODE_FILE       "Build with file node-type"                             ON "" OFF)
-cmake_dependent_option(WITH_NODE_FPGA       "Build with fpga node-type"                             ON "WITH_FPGA" OFF)
-cmake_dependent_option(WITH_NODE_GO         "Build with Go nodes-types"                             ON "WITH_GO" OFF)
-cmake_dependent_option(WITH_NODE_IEC61850   "Build with iec61850 node-types"                        ON "LIBIEC61850_FOUND;NOT WITHOUT_GPL" OFF)
-cmake_dependent_option(WITH_NODE_IEC60870   "Build with iec60870 node-types"                        ON "LIB60870_FOUND;NOT WITHOUT_GPL" OFF)
-cmake_dependent_option(WITH_NODE_INFINIBAND "Build with infiniband node-type"                       ON "IBVerbs_FOUND; RDMACM_FOUND" OFF) # Infiniband node-type is currenly broken
-cmake_dependent_option(WITH_NODE_INFLUXDB   "Build with influxdb node-type"                         ON "" OFF)
-cmake_dependent_option(WITH_NODE_KAFKA      "Build with kafka node-type"                            ON "RDKAFKA_FOUND" OFF)
-cmake_dependent_option(WITH_NODE_LOOPBACK   "Build with loopback node-type"                         ON "" OFF)
-cmake_dependent_option(WITH_NODE_MQTT       "Build with mqtt node-type"                             ON "MOSQUITTO_FOUND" OFF)
-cmake_dependent_option(WITH_NODE_NANOMSG    "Build with nanomsg node-type"                          ON "NANOMSG_FOUND" OFF)
-cmake_dependent_option(WITH_NODE_NGSI       "Build with ngsi node-type"                             ON "" OFF)
-cmake_dependent_option(WITH_NODE_OPAL       "Build with opal node-type"                             ON "Opal_FOUND" OFF)
-cmake_dependent_option(WITH_NODE_REDIS      "Build with redis node-type"                            ON "HIREDIS_FOUND; REDISPP_FOUND" OFF)
-cmake_dependent_option(WITH_NODE_RTP        "Build with rtp node-type"                              ON "RE_FOUND" OFF)
-cmake_dependent_option(WITH_NODE_SHMEM      "Build with shmem node-type"                            ON "HAS_SEMAPHORE; HAS_MMAN" OFF)
-cmake_dependent_option(WITH_NODE_SIGNAL     "Build with signal node-type"                           ON "" OFF)
-cmake_dependent_option(WITH_NODE_SOCKET     "Build with socket node-type"                           ON "LIBNL3_ROUTE_FOUND" OFF)
-cmake_dependent_option(WITH_NODE_STATS      "Build with stats node-type"                            ON "" OFF)
-cmake_dependent_option(WITH_NODE_TEMPER     "Build with temper node-type"                           ON "LIBUSB_FOUND" OFF)
-cmake_dependent_option(WITH_NODE_TEST_RTT   "Build with test_rtt node-type"                         ON "" OFF)
-cmake_dependent_option(WITH_NODE_ULDAQ      "Build with uldaq node-type"                            ON "LIBULDAQ_FOUND" OFF)
-cmake_dependent_option(WITH_NODE_WEBSOCKET  "Build with websocket node-type"                        ON "WITH_WEB; LIBWEBSOCKETS_FOUND" OFF)
-cmake_dependent_option(WITH_NODE_ZEROMQ     "Build with zeromq node-type"                           ON "LIBZMQ_FOUND;NOT WITHOUT_GPL" OFF)
+cmake_dependent_option(WITH_API             "Build with remote control API"                         "${WITH_DEFAULTS}" "" OFF)
+cmake_dependent_option(WITH_CLIENTS         "Build client applications"                             "${WITH_DEFAULTS}" "TOPLEVEL_PROJECT" OFF)
+cmake_dependent_option(WITH_CONFIG          "Build with support for libconfig configuration syntax" "${WITH_DEFAULTS}" "LIBCONFIG_FOUND" OFF)
+cmake_dependent_option(WITH_FPGA            "Build with support for VILLASfpga"                     "${WITH_DEFAULTS}" "FOUND_FPGA_SUBMODULES" OFF)
+cmake_dependent_option(WITH_GRAPHVIZ        "Build with Graphviz"                                   "${WITH_DEFAULTS}" "CGRAPH_FOUND; GVC_FOUND" OFF)
+cmake_dependent_option(WITH_HOOKS           "Build with support for processing hook plugins"        "${WITH_DEFAULTS}" "" OFF)
+cmake_dependent_option(WITH_LUA             "Build with Lua"                                        "${WITH_DEFAULTS}" "LUA_FOUND" OFF)
+cmake_dependent_option(WITH_OPENMP          "Build with support for OpenMP for parallel hooks"      "${WITH_DEFAULTS}" "OPENMP_FOUND" OFF)
+cmake_dependent_option(WITH_PLUGINS         "Build plugins"                                         "${WITH_DEFAULTS}" "TOPLEVEL_PROJECT" OFF)
+cmake_dependent_option(WITH_SRC             "Build executables"                                     "${WITH_DEFAULTS}" "TOPLEVEL_PROJECT" OFF)
+cmake_dependent_option(WITH_TESTS           "Run tests"                                             "${WITH_DEFAULTS}" "TOPLEVEL_PROJECT" OFF)
+cmake_dependent_option(WITH_TOOLS           "Build auxilary tools"                                  "${WITH_DEFAULTS}" "TOPLEVEL_PROJECT" OFF)
+cmake_dependent_option(WITH_WEB             "Build with internal webserver"                         "${WITH_DEFAULTS}" "LIBWEBSOCKETS_FOUND" OFF)
+
+cmake_dependent_option(WITH_NODE_AMQP       "Build with amqp node-type"                             "${WITH_DEFAULTS}" "RABBITMQ_C_FOUND" OFF)
+cmake_dependent_option(WITH_NODE_CAN        "Build with can node-type"                              "${WITH_DEFAULTS}" "" OFF)
+cmake_dependent_option(WITH_NODE_COMEDI     "Build with comedi node-type"                           "${WITH_DEFAULTS}" "COMEDILIB_FOUND" OFF)
+cmake_dependent_option(WITH_NODE_ETHERCAT   "Build with ethercat node-type"                         "${WITH_DEFAULTS}" "ETHERLAB_FOUND; NOT WITHOUT_GPL" OFF)
+cmake_dependent_option(WITH_NODE_EXAMPLE    "Build with example node-type"                          "${WITH_DEFAULTS}" "" OFF)
+cmake_dependent_option(WITH_NODE_EXEC       "Build with exec node-type"                             "${WITH_DEFAULTS}" "" OFF)
+cmake_dependent_option(WITH_NODE_FILE       "Build with file node-type"                             "${WITH_DEFAULTS}" "" OFF)
+cmake_dependent_option(WITH_NODE_FPGA       "Build with fpga node-type"                             "${WITH_DEFAULTS}" "WITH_FPGA" OFF)
+cmake_dependent_option(WITH_NODE_IEC61850   "Build with iec61850 node-types"                        "${WITH_DEFAULTS}" "LIBIEC61850_FOUND; NOT WITHOUT_GPL" OFF)
+cmake_dependent_option(WITH_NODE_IEC60870   "Build with iec60870 node-types"                        "${WITH_DEFAULTS}" "LIB60870_FOUND; NOT WITHOUT_GPL" OFF)
+cmake_dependent_option(WITH_NODE_INFINIBAND "Build with infiniband node-type"                       "${WITH_DEFAULTS}" "IBVerbs_FOUND; RDMACM_FOUND" OFF) # Infiniband node-type is currenly broken
+cmake_dependent_option(WITH_NODE_INFLUXDB   "Build with influxdb node-type"                         "${WITH_DEFAULTS}" "" OFF)
+cmake_dependent_option(WITH_NODE_KAFKA      "Build with kafka node-type"                            "${WITH_DEFAULTS}" "RDKAFKA_FOUND" OFF)
+cmake_dependent_option(WITH_NODE_LOOPBACK   "Build with loopback node-type"                         "${WITH_DEFAULTS}" "" OFF)
+cmake_dependent_option(WITH_NODE_MODBUS     "Build with modbus node-type"                           "${WITH_DEFAULTS}" "MODBUS_FOUND" OFF)
+cmake_dependent_option(WITH_NODE_MQTT       "Build with mqtt node-type"                             "${WITH_DEFAULTS}" "MOSQUITTO_FOUND" OFF)
+cmake_dependent_option(WITH_NODE_NANOMSG    "Build with nanomsg node-type"                          "${WITH_DEFAULTS}" "NANOMSG_FOUND" OFF)
+cmake_dependent_option(WITH_NODE_NGSI       "Build with ngsi node-type"                             "${WITH_DEFAULTS}" "" OFF)
+cmake_dependent_option(WITH_NODE_REDIS      "Build with redis node-type"                            "${WITH_DEFAULTS}" "HIREDIS_FOUND; REDISPP_FOUND" OFF)
+cmake_dependent_option(WITH_NODE_RTP        "Build with rtp node-type"                              "${WITH_DEFAULTS}" "re_FOUND" OFF)
+cmake_dependent_option(WITH_NODE_SHMEM      "Build with shmem node-type"                            "${WITH_DEFAULTS}" "HAS_SEMAPHORE; HAS_MMAN" OFF)
+cmake_dependent_option(WITH_NODE_SIGNAL     "Build with signal node-type"                           "${WITH_DEFAULTS}" "" OFF)
+cmake_dependent_option(WITH_NODE_SOCKET     "Build with socket node-type"                           "${WITH_DEFAULTS}" "LIBNL3_ROUTE_FOUND" OFF)
+cmake_dependent_option(WITH_NODE_STATS      "Build with stats node-type"                            "${WITH_DEFAULTS}" "" OFF)
+cmake_dependent_option(WITH_NODE_TEMPER     "Build with temper node-type"                           "${WITH_DEFAULTS}" "LIBUSB_FOUND" OFF)
+cmake_dependent_option(WITH_NODE_TEST_RTT   "Build with test_rtt node-type"                         "${WITH_DEFAULTS}" "" OFF)
+cmake_dependent_option(WITH_NODE_ULDAQ      "Build with uldaq node-type"                            "${WITH_DEFAULTS}" "LIBULDAQ_FOUND" OFF)
+cmake_dependent_option(WITH_NODE_WEBRTC     "Build with webrtc node-type"                           "${WITH_DEFAULTS}" "WITH_WEB; LibDataChannel_FOUND" OFF)
+cmake_dependent_option(WITH_NODE_WEBSOCKET  "Build with websocket node-type"                        "${WITH_DEFAULTS}" "WITH_WEB" OFF)
+cmake_dependent_option(WITH_NODE_ZEROMQ     "Build with zeromq node-type"                           "${WITH_DEFAULTS}" "LIBZMQ_FOUND; NOT WITHOUT_GPL" OFF)
+
+# set a default for the build type
+if("${CMAKE_BUILD_TYPE}" STREQUAL "")
+    set(CMAKE_BUILD_TYPE "Debug")
+endif()
 
 # Add more build configurations
 include(cmake/config/Debug.cmake)
@@ -206,6 +215,16 @@ include(cmake/config/Release.cmake)
 include(cmake/config/Coverage.cmake)
 include(cmake/config/Profiling.cmake)
 
+if(NOT DEFINED VILLAS_COMPILE_WARNING_AS_ERROR)
+    set(VILLAS_COMPILE_WARNING_AS_ERROR ON)
+endif()
+
+if(VILLAS_COMPILE_WARNING_AS_ERROR)
+    add_compile_options(-Werror)
+else()
+    add_compile_options(-Wno-error)
+endif()
+
 # Get version info and buildid from Git
 GetVersion(${PROJECT_SOURCE_DIR} "CMAKE_PROJECT")
 
@@ -213,10 +232,6 @@ if(WITH_FPGA)
     add_subdirectory(fpga)
 endif()
 
-if(WITH_GO)
-    add_subdirectory(go)
-endif()
-
 add_subdirectory(common)
 add_subdirectory(etc)
 add_subdirectory(lib)
@@ -235,10 +250,6 @@ if(WITH_PLUGINS)
     add_subdirectory(plugins)
 endif()
 
-if(WITH_DOC AND ${CMAKE_VERSION} VERSION_GREATER_EQUAL "3.9.0")
-    add_subdirectory(doc)
-endif()
-
 if(WITH_CLIENTS)
     add_subdirectory(clients)
 endif()
@@ -256,9 +267,7 @@ configure_file(
 add_feature_info(API                    WITH_API                    "Build with remote control API")
 add_feature_info(CLIENTS                WITH_CLIENTS                "Build client applications")
 add_feature_info(CONFIG                 WITH_CONFIG                 "Build with support for libconfig configuration syntax")
-add_feature_info(DOC                    WITH_DOC                    "Build documentation")
 add_feature_info(FPGA                   WITH_FPGA                   "Build with FPGA support")
-add_feature_info(GO                     WITH_GO                     "Build with Go code")
 add_feature_info(GRAPHVIZ               WITH_GRAPHVIZ               "Build with Graphviz support")
 add_feature_info(HOOKS                  WITH_HOOKS                  "Build with support for processing hook plugins")
 add_feature_info(LUA                    WITH_LUA                    "Build with Lua support")
@@ -277,17 +286,16 @@ add_feature_info(NODE_EXAMPLE           WITH_NODE_EXAMPLE           "Build with
 add_feature_info(NODE_EXEC              WITH_NODE_EXEC              "Build with exec node-type")
 add_feature_info(NODE_FILE              WITH_NODE_FILE              "Build with file node-type")
 add_feature_info(NODE_FPGA              WITH_NODE_FPGA              "Build with fpga node-type")
-add_feature_info(NODE_GO                WITH_NODE_GO                "Build with Go node-types")
 add_feature_info(NODE_IEC61850          WITH_NODE_IEC61850          "Build with iec61850 node-types")
 add_feature_info(NODE_IEC60870          WITH_NODE_IEC60870          "Build with iec60870 node-types")
 add_feature_info(NODE_INFINIBAND        WITH_NODE_INFINIBAND        "Build with infiniband node-type")
 add_feature_info(NODE_INFLUXDB          WITH_NODE_INFLUXDB          "Build with influxdb node-type")
 add_feature_info(NODE_KAFKA             WITH_NODE_KAFKA             "Build with kafka node-type")
 add_feature_info(NODE_LOOPBACK          WITH_NODE_LOOPBACK          "Build with loopback node-type")
+add_feature_info(NODE_MODBUS            WITH_NODE_MODBUS            "Build with modbus node-type")
 add_feature_info(NODE_MQTT              WITH_NODE_MQTT              "Build with mqtt node-type")
 add_feature_info(NODE_NANOMSG           WITH_NODE_NANOMSG           "Build with nanomsg node-type")
 add_feature_info(NODE_NGSI              WITH_NODE_NGSI              "Build with ngsi node-type")
-add_feature_info(NODE_OPAL              WITH_NODE_OPAL              "Build with opal node-type")
 add_feature_info(NODE_REDIS             WITH_NODE_REDIS             "Build with redis node-type")
 add_feature_info(NODE_RTP               WITH_NODE_RTP               "Build with rtp node-type")
 add_feature_info(NODE_SHMEM             WITH_NODE_SHMEM             "Build with shmem node-type")
@@ -297,6 +305,7 @@ add_feature_info(NODE_STATS             WITH_NODE_STATS             "Build with
 add_feature_info(NODE_TEMPER            WITH_NODE_TEMPER            "Build with temper node-type")
 add_feature_info(NODE_TEST_RTT          WITH_NODE_TEST_RTT          "Build with test_rtt node-type")
 add_feature_info(NODE_ULDAQ             WITH_NODE_ULDAQ             "Build with uldaq node-type")
+add_feature_info(NODE_WEBRTC            WITH_NODE_WEBRTC            "Build with webrtc node-type")
 add_feature_info(NODE_WEBSOCKET         WITH_NODE_WEBSOCKET         "Build with websocket node-type")
 add_feature_info(NODE_ZEROMQ            WITH_NODE_ZEROMQ            "Build with zeromq node-type")
 

CODEOWNERS

@@ -0,0 +1,39 @@
+# SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
+# SPDX-License-Identifier: Apache-2.0
+
+# These owners will be the default owners for everything in
+# the repo. Unless a later match takes precedence,
+# @stv0g will be requested for
+# review when someone opens a pull request.
+*       @stv0g
+
+# Order is important; the last matching pattern takes the most
+# precedence. When someone opens a pull request that only
+# modifies the following files, only the following members
+# and not the global owner(s) will be requested for a review.
+
+# FPGA
+fpga                                                @n-eiling
+/lib/nodes/fpga.cpp                                 @n-eiling
+/include/villas/nodes/fpga.hpp                      @n-eiling
+/tools/hwdef-parse.py                               @n-eiling
+/tools/fpga-*                                       @n-eiling
+/fpga                                               @n-eiling
+/etc/examples/nodes/fpga.conf                       @n-eiling
+/etc/fpga                                           @n-eiling
+/doc/openapi/components/schemas/nodes/fpga.yaml     @n-eiling
+
+
+# PMU
+/lib/nodes/libiec61850_goose.cpp                    @windrad6
+/include/villas/nodes/libiec61850_goose.hpp         @windrad6
+/lib/nodes/uldaq.cpp                                @windrad6
+/include/villas/nodes/uldaq.hpp                     @windrad6
+/lib/dumper.cpp                                     @windrad6
+/include/villas/dumper.hpp                          @windrad6
+
+# VFIO related files
+/common/lib/kernel/pci.cpp                          @n-eiling
+/common/lib/kernel/vfi_*.cpp                        @n-eiling
+/common/include/villas/kernel/devices/*             @n-eiling
+/common/include/villas/kernel/vfio_*.hpp            @n-eiling

CONTRIBUTING.md

@@ -1,176 +1,8 @@
 # Contribution guidelines
 
-## Coding style
+<!--
+SPDX-FileCopyrightText: 2014-2024 Institute for Automation of Complex Power Systems, RWTH Aachen University
+SPDX-License-Identifier: Apache-2.0
+-->
 
-### Naming
-
-Variables should use lower case names with underscores.
-
-There are now special visibility or type prefixes.
-
-Structure members should not use abbreviated names:
-
-Good
-```
-struct A {
-    char *message;
-    int length;
-}
-```
-
-Bad:
-```
-struct A {
-    char *msg;
-    int len;
-}
-```
-
-### Placement of spaces
-
-In variable declarations (including in function parameters) we place the asterisk next to the variable name.
-
-Good:
-```c
-int *number;
-```
-
-Bad:
-```c
-int * number;
-int* number;
-```
-
-In function return values we place the asterisk between spaces
-
-Good:
-```c
-void * my_thread()
-{
-    
-}
-```
-
-Bad:
-```c
-void *mythread()
-{
-    
-}
-
-void * mythread()
-{
-    
-}
-```
-
-In expressions we place spaces between most elements but not between parantheses:
-
-Good:
-```
-int a = ((5 * 10) + 10 ) % 22;
-```
-
-Bad:
-```
-int a = ((5*10)+10)%22;
-```
-
-We also put spaces infront / after most keywords such as `if`, `while`, ...
-
-Good:
-```c
-for (int a = 0; a < 1; a++) {
-    ...
-}
-```
-
-Bad:
-```c
-for(int a = 0; a < 1; a++) {
-    ...
-}
-```
-
-### Line length
-
-Try to limit line length to about 160 characters.
-
-### Indention
-
-We use tabs for indention which should be displayed as 8 spaces by your editor.
-
-### Brace placement
-
-For everything except functions we place the opening brace in the same line:
-
-Good:
-```c
-struct A {
-    enum {
-        A,
-        B
-    } choice;
-}
-
-if (true) {
-    
-}
-```
-
-Bad:
-```
-struct A
-{
-    enum
-    {
-        A,
-        B
-    } choice;
-}
-
-if (true)
-{
-    
-}
-```
-
-However, in functions we place the brace in a new line:
-
-```
-void main()
-{
-    
-}
-```
-
-### #define and Macro Names
-
-Are always written UPPERCASE.
-
-Good:
-```c
-#define HUGEPAGESIZE (1 << 22)
-#define MAX(a, b) (a > b ? a ? b)
-```
-
-Bad:
-```c
-#define max(a, b) (a > b ? a ? b)
-```
-
-## Always work on feature branches
-
-Please branch from `develop` to create a new _feature_ branch.
-
-Please create a new _feature_ branch for every new feature or fix.
-
-## Do not commit directly to `master` or `develop`.
-
-Use your _feature_ branch.
-
-Please rebase your work against the `develop` before submitting a merge reqeuest.
-
-## Make the CI happy :-)
-
-Only branches which pass the CI can be merged.
+Visit the [contribution guidelines](https://villas.fein-aachen.org/docs/node/development/contributing/) in our documentation to understand how you can contribute to VILLASnode.

COPYING.md

@@ -1,194 +0,0 @@
-Apache License
-==============
-
-_Version 2.0, January 2004_  
-_&lt;<http://www.apache.org/licenses/>&gt;_
-
-### Terms and Conditions for use, reproduction, and distribution
-
-#### 1. Definitions
-
-“License” shall mean the terms and conditions for use, reproduction, and
-distribution as defined by Sections 1 through 9 of this document.
-
-“Licensor” shall mean the copyright owner or entity authorized by the copyright
-owner that is granting the License.
-
-“Legal Entity” shall mean the union of the acting entity and all other entities
-that control, are controlled by, or are under common control with that entity.
-For the purposes of this definition, “control” means **(i)** the power, direct or
-indirect, to cause the direction or management of such entity, whether by
-contract or otherwise, or **(ii)** ownership of fifty percent (50%) or more of the
-outstanding shares, or **(iii)** beneficial ownership of such entity.
-
-“You” (or “Your”) shall mean an individual or Legal Entity exercising
-permissions granted by this License.
-
-“Source” form shall mean the preferred form for making modifications, including
-but not limited to software source code, documentation source, and configuration
-files.
-
-“Object” form shall mean any form resulting from mechanical transformation or
-translation of a Source form, including but not limited to compiled object code,
-generated documentation, and conversions to other media types.
-
-“Work” shall mean the work of authorship, whether in Source or Object form, made
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-“Contribution” shall mean any work of authorship, including the original version
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-
-#### 5. Submission of Contributions
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-
-#### 6. Trademarks
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-
-#### 7. Disclaimer of Warranty
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-
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-#### 9. Accepting Warranty or Additional Liability
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-sole responsibility, not on behalf of any other Contributor, and only if You
-agree to indemnify, defend, and hold each Contributor harmless for any liability
-incurred by, or claims asserted against, such Contributor by reason of your
-accepting any such warranty or additional liability.
-
-_END OF TERMS AND CONDITIONS_
-
-### APPENDIX: How to apply the Apache License to your work
-
-To apply the Apache License to your work, attach the following boilerplate
-notice, with the fields enclosed by brackets `[]` replaced with your own
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-    Copyright [yyyy] [name of copyright owner]
-    
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-    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.

LICENSE

@@ -0,0 +1,73 @@
+Apache License
+Version 2.0, January 2004
+http://www.apache.org/licenses/
+
+TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+1. Definitions.
+
+"License" shall mean the terms and conditions for use, reproduction, and distribution as defined by Sections 1 through 9 of this document.
+
+"Licensor" shall mean the copyright owner or entity authorized by the copyright owner that is granting the License.
+
+"Legal Entity" shall mean the union of the acting entity and all other entities that control, are controlled by, or are under common control with that entity. For the purposes of this definition, "control" means (i) the power, direct or indirect, to cause the direction or management of such entity, whether by contract or otherwise, or (ii) ownership of fifty percent (50%) or more of the outstanding shares, or (iii) beneficial ownership of such entity.
+
+"You" (or "Your") shall mean an individual or Legal Entity exercising permissions granted by this License.
+
+"Source" form shall mean the preferred form for making modifications, including but not limited to software source code, documentation source, and configuration files.
+
+"Object" form shall mean any form resulting from mechanical transformation or translation of a Source form, including but not limited to compiled object code, generated documentation, and conversions to other media types.
+
+"Work" shall mean the work of authorship, whether in Source or Object form, made available under the License, as indicated by a copyright notice that is included in or attached to the work (an example is provided in the Appendix below).
+
+"Derivative Works" shall mean any work, whether in Source or Object form, that is based on (or derived from) the Work and for which the editorial revisions, annotations, elaborations, or other modifications represent, as a whole, an original work of authorship. For the purposes of this License, Derivative Works shall not include works that remain separable from, or merely link (or bind by name) to the interfaces of, the Work and Derivative Works thereof.
+
+"Contribution" shall mean any work of authorship, including the original version of the Work and any modifications or additions to that Work or Derivative Works thereof, that is intentionally submitted to Licensor for inclusion in the Work by the copyright owner or by an individual or Legal Entity authorized to submit on behalf of the copyright owner. For the purposes of this definition, "submitted" means any form of electronic, verbal, or written communication sent to the Licensor or its representatives, including but not limited to communication on electronic mailing lists, source code control systems, and issue tracking systems that are managed by, or on behalf of, the Licensor for the purpose of discussing and improving the Work, but excluding communication that is conspicuously marked or otherwise designated in writing by the copyright owner as "Not a Contribution."
+
+"Contributor" shall mean Licensor and any individual or Legal Entity on behalf of whom a Contribution has been received by Licensor and subsequently incorporated within the Work.
+
+2. Grant of Copyright License. Subject to the terms and conditions of this License, each Contributor hereby grants to You a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare Derivative Works of, publicly display, publicly perform, sublicense, and distribute the Work and such Derivative Works in Source or Object form.
+
+3. Grant of Patent License. Subject to the terms and conditions of this License, each Contributor hereby grants to You a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable (except as stated in this section) patent license to make, have made, use, offer to sell, sell, import, and otherwise transfer the Work, where such license applies only to those patent claims licensable by such Contributor that are necessarily infringed by their Contribution(s) alone or by combination of their Contribution(s) with the Work to which such Contribution(s) was submitted. If You institute patent litigation against any entity (including a cross-claim or counterclaim in a lawsuit) alleging that the Work or a Contribution incorporated within the Work constitutes direct or contributory patent infringement, then any patent licenses granted to You under this License for that Work shall terminate as of the date such litigation is filed.
+
+4. Redistribution. You may reproduce and distribute copies of the Work or Derivative Works thereof in any medium, with or without modifications, and in Source or Object form, provided that You meet the following conditions:
+
+     (a) You must give any other recipients of the Work or Derivative Works a copy of this License; and
+
+     (b) You must cause any modified files to carry prominent notices stating that You changed the files; and
+
+     (c) You must retain, in the Source form of any Derivative Works that You distribute, all copyright, patent, trademark, and attribution notices from the Source form of the Work, excluding those notices that do not pertain to any part of the Derivative Works; and
+
+     (d) If the Work includes a "NOTICE" text file as part of its distribution, then any Derivative Works that You distribute must include a readable copy of the attribution notices contained within such NOTICE file, excluding those notices that do not pertain to any part of the Derivative Works, in at least one of the following places: within a NOTICE text file distributed as part of the Derivative Works; within the Source form or documentation, if provided along with the Derivative Works; or, within a display generated by the Derivative Works, if and wherever such third-party notices normally appear. The contents of the NOTICE file are for informational purposes only and do not modify the License. You may add Your own attribution notices within Derivative Works that You distribute, alongside or as an addendum to the NOTICE text from the Work, provided that such additional attribution notices cannot be construed as modifying the License.
+
+     You may add Your own copyright statement to Your modifications and may provide additional or different license terms and conditions for use, reproduction, or distribution of Your modifications, or for any such Derivative Works as a whole, provided Your use, reproduction, and distribution of the Work otherwise complies with the conditions stated in this License.
+
+5. Submission of Contributions. Unless You explicitly state otherwise, any Contribution intentionally submitted for inclusion in the Work by You to the Licensor shall be under the terms and conditions of this License, without any additional terms or conditions. Notwithstanding the above, nothing herein shall supersede or modify the terms of any separate license agreement you may have executed with Licensor regarding such Contributions.
+
+6. Trademarks. This License does not grant permission to use the trade names, trademarks, service marks, or product names of the Licensor, except as required for reasonable and customary use in describing the origin of the Work and reproducing the content of the NOTICE file.
+
+7. Disclaimer of Warranty. Unless required by applicable law or agreed to in writing, Licensor provides the Work (and each Contributor provides its Contributions) on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied, including, without limitation, any warranties or conditions of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A PARTICULAR PURPOSE. You are solely responsible for determining the appropriateness of using or redistributing the Work and assume any risks associated with Your exercise of permissions under this License.
+
+8. Limitation of Liability. In no event and under no legal theory, whether in tort (including negligence), contract, or otherwise, unless required by applicable law (such as deliberate and grossly negligent acts) or agreed to in writing, shall any Contributor be liable to You for damages, including any direct, indirect, special, incidental, or consequential damages of any character arising as a result of this License or out of the use or inability to use the Work (including but not limited to damages for loss of goodwill, work stoppage, computer failure or malfunction, or any and all other commercial damages or losses), even if such Contributor has been advised of the possibility of such damages.
+
+9. Accepting Warranty or Additional Liability. While redistributing the Work or Derivative Works thereof, You may choose to offer, and charge a fee for, acceptance of support, warranty, indemnity, or other liability obligations and/or rights consistent with this License. However, in accepting such obligations, You may act only on Your own behalf and on Your sole responsibility, not on behalf of any other Contributor, and only if You agree to indemnify, defend, and hold each Contributor harmless for any liability incurred by, or claims asserted against, such Contributor by reason of your accepting any such warranty or additional liability.
+
+END OF TERMS AND CONDITIONS
+
+APPENDIX: How to apply the Apache License to your work.
+
+To apply the Apache License to your work, attach the following boilerplate notice, with the fields enclosed by brackets "[]" replaced with your own identifying information. (Don't include the brackets!)  The text should be enclosed in the appropriate comment syntax for the file format. We also recommend that a file or class name and description of purpose be included on the same "printed page" as the copyright notice for easier identification within third-party archives.
+
+Copyright [yyyy] [name of copyright owner]
+
+Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
+
+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.

LICENSES/Apache-2.0.txt

@@ -0,0 +1,73 @@
+Apache License
+Version 2.0, January 2004
+http://www.apache.org/licenses/
+
+TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+1. Definitions.
+
+"License" shall mean the terms and conditions for use, reproduction, and distribution as defined by Sections 1 through 9 of this document.
+
+"Licensor" shall mean the copyright owner or entity authorized by the copyright owner that is granting the License.
+
+"Legal Entity" shall mean the union of the acting entity and all other entities that control, are controlled by, or are under common control with that entity. For the purposes of this definition, "control" means (i) the power, direct or indirect, to cause the direction or management of such entity, whether by contract or otherwise, or (ii) ownership of fifty percent (50%) or more of the outstanding shares, or (iii) beneficial ownership of such entity.
+
+"You" (or "Your") shall mean an individual or Legal Entity exercising permissions granted by this License.
+
+"Source" form shall mean the preferred form for making modifications, including but not limited to software source code, documentation source, and configuration files.
+
+"Object" form shall mean any form resulting from mechanical transformation or translation of a Source form, including but not limited to compiled object code, generated documentation, and conversions to other media types.
+
+"Work" shall mean the work of authorship, whether in Source or Object form, made available under the License, as indicated by a copyright notice that is included in or attached to the work (an example is provided in the Appendix below).
+
+"Derivative Works" shall mean any work, whether in Source or Object form, that is based on (or derived from) the Work and for which the editorial revisions, annotations, elaborations, or other modifications represent, as a whole, an original work of authorship. For the purposes of this License, Derivative Works shall not include works that remain separable from, or merely link (or bind by name) to the interfaces of, the Work and Derivative Works thereof.
+
+"Contribution" shall mean any work of authorship, including the original version of the Work and any modifications or additions to that Work or Derivative Works thereof, that is intentionally submitted to Licensor for inclusion in the Work by the copyright owner or by an individual or Legal Entity authorized to submit on behalf of the copyright owner. For the purposes of this definition, "submitted" means any form of electronic, verbal, or written communication sent to the Licensor or its representatives, including but not limited to communication on electronic mailing lists, source code control systems, and issue tracking systems that are managed by, or on behalf of, the Licensor for the purpose of discussing and improving the Work, but excluding communication that is conspicuously marked or otherwise designated in writing by the copyright owner as "Not a Contribution."
+
+"Contributor" shall mean Licensor and any individual or Legal Entity on behalf of whom a Contribution has been received by Licensor and subsequently incorporated within the Work.
+
+2. Grant of Copyright License. Subject to the terms and conditions of this License, each Contributor hereby grants to You a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare Derivative Works of, publicly display, publicly perform, sublicense, and distribute the Work and such Derivative Works in Source or Object form.
+
+3. Grant of Patent License. Subject to the terms and conditions of this License, each Contributor hereby grants to You a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable (except as stated in this section) patent license to make, have made, use, offer to sell, sell, import, and otherwise transfer the Work, where such license applies only to those patent claims licensable by such Contributor that are necessarily infringed by their Contribution(s) alone or by combination of their Contribution(s) with the Work to which such Contribution(s) was submitted. If You institute patent litigation against any entity (including a cross-claim or counterclaim in a lawsuit) alleging that the Work or a Contribution incorporated within the Work constitutes direct or contributory patent infringement, then any patent licenses granted to You under this License for that Work shall terminate as of the date such litigation is filed.
+
+4. Redistribution. You may reproduce and distribute copies of the Work or Derivative Works thereof in any medium, with or without modifications, and in Source or Object form, provided that You meet the following conditions:
+
+     (a) You must give any other recipients of the Work or Derivative Works a copy of this License; and
+
+     (b) You must cause any modified files to carry prominent notices stating that You changed the files; and
+
+     (c) You must retain, in the Source form of any Derivative Works that You distribute, all copyright, patent, trademark, and attribution notices from the Source form of the Work, excluding those notices that do not pertain to any part of the Derivative Works; and
+
+     (d) If the Work includes a "NOTICE" text file as part of its distribution, then any Derivative Works that You distribute must include a readable copy of the attribution notices contained within such NOTICE file, excluding those notices that do not pertain to any part of the Derivative Works, in at least one of the following places: within a NOTICE text file distributed as part of the Derivative Works; within the Source form or documentation, if provided along with the Derivative Works; or, within a display generated by the Derivative Works, if and wherever such third-party notices normally appear. The contents of the NOTICE file are for informational purposes only and do not modify the License. You may add Your own attribution notices within Derivative Works that You distribute, alongside or as an addendum to the NOTICE text from the Work, provided that such additional attribution notices cannot be construed as modifying the License.
+
+     You may add Your own copyright statement to Your modifications and may provide additional or different license terms and conditions for use, reproduction, or distribution of Your modifications, or for any such Derivative Works as a whole, provided Your use, reproduction, and distribution of the Work otherwise complies with the conditions stated in this License.
+
+5. Submission of Contributions. Unless You explicitly state otherwise, any Contribution intentionally submitted for inclusion in the Work by You to the Licensor shall be under the terms and conditions of this License, without any additional terms or conditions. Notwithstanding the above, nothing herein shall supersede or modify the terms of any separate license agreement you may have executed with Licensor regarding such Contributions.
+
+6. Trademarks. This License does not grant permission to use the trade names, trademarks, service marks, or product names of the Licensor, except as required for reasonable and customary use in describing the origin of the Work and reproducing the content of the NOTICE file.
+
+7. Disclaimer of Warranty. Unless required by applicable law or agreed to in writing, Licensor provides the Work (and each Contributor provides its Contributions) on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied, including, without limitation, any warranties or conditions of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A PARTICULAR PURPOSE. You are solely responsible for determining the appropriateness of using or redistributing the Work and assume any risks associated with Your exercise of permissions under this License.
+
+8. Limitation of Liability. In no event and under no legal theory, whether in tort (including negligence), contract, or otherwise, unless required by applicable law (such as deliberate and grossly negligent acts) or agreed to in writing, shall any Contributor be liable to You for damages, including any direct, indirect, special, incidental, or consequential damages of any character arising as a result of this License or out of the use or inability to use the Work (including but not limited to damages for loss of goodwill, work stoppage, computer failure or malfunction, or any and all other commercial damages or losses), even if such Contributor has been advised of the possibility of such damages.
+
+9. Accepting Warranty or Additional Liability. While redistributing the Work or Derivative Works thereof, You may choose to offer, and charge a fee for, acceptance of support, warranty, indemnity, or other liability obligations and/or rights consistent with this License. However, in accepting such obligations, You may act only on Your own behalf and on Your sole responsibility, not on behalf of any other Contributor, and only if You agree to indemnify, defend, and hold each Contributor harmless for any liability incurred by, or claims asserted against, such Contributor by reason of your accepting any such warranty or additional liability.
+
+END OF TERMS AND CONDITIONS
+
+APPENDIX: How to apply the Apache License to your work.
+
+To apply the Apache License to your work, attach the following boilerplate notice, with the fields enclosed by brackets "[]" replaced with your own identifying information. (Don't include the brackets!)  The text should be enclosed in the appropriate comment syntax for the file format. We also recommend that a file or class name and description of purpose be included on the same "printed page" as the copyright notice for easier identification within third-party archives.
+
+Copyright [yyyy] [name of copyright owner]
+
+Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
+
+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.

LICENSES/BSD-1-Clause.txt

@@ -0,0 +1,7 @@
+Copyright (c) <year> <owner>. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT HOLDERS AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

LICENSES/BSD-2-Clause.txt

@@ -0,0 +1,9 @@
+Copyright (c) <year> <owner> 
+
+Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
+
+2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

LICENSES/BSD-3-Clause.txt

@@ -0,0 +1,11 @@
+Copyright (c) 2017 Institute for Automation of Complex Power Systems, RWTH Aachen University.
+
+Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
+
+2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
+
+3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

LICENSES/GPL-2.0-or-later.txt

@@ -0,0 +1,117 @@
+GNU GENERAL PUBLIC LICENSE
+Version 2, June 1991
+
+Copyright (C) 1989, 1991 Free Software Foundation, Inc.
+51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
+
+Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed.
+
+Preamble
+
+The licenses for most software are designed to take away your freedom to share and change it. By contrast, the GNU General Public License is intended to guarantee your freedom to share and change free software--to make sure the software is free for all its users. This General Public License applies to most of the Free Software Foundation's software and to any other program whose authors commit to using it. (Some other Free Software Foundation software is covered by the GNU Lesser General Public License instead.) You can apply it to your programs, too.
+
+When we speak of free software, we are referring to freedom, not price. Our General Public Licenses are designed to make sure that you have the freedom to distribute copies of free software (and charge for this service if you wish), that you receive source code or can get it if you want it, that you can change the software or use pieces of it in new free programs; and that you know you can do these things.
+
+To protect your rights, we need to make restrictions that forbid anyone to deny you these rights or to ask you to surrender the rights. These restrictions translate to certain responsibilities for you if you distribute copies of the software, or if you modify it.
+
+For example, if you distribute copies of such a program, whether gratis or for a fee, you must give the recipients all the rights that you have. You must make sure that they, too, receive or can get the source code. And you must show them these terms so they know their rights.
+
+We protect your rights with two steps: (1) copyright the software, and (2) offer you this license which gives you legal permission to copy, distribute and/or modify the software.
+
+Also, for each author's protection and ours, we want to make certain that everyone understands that there is no warranty for this free software. If the software is modified by someone else and passed on, we want its recipients to know that what they have is not the original, so that any problems introduced by others will not reflect on the original authors' reputations.
+
+Finally, any free program is threatened constantly by software patents. We wish to avoid the danger that redistributors of a free program will individually obtain patent licenses, in effect making the program proprietary. To prevent this, we have made it clear that any patent must be licensed for everyone's free use or not licensed at all.
+
+The precise terms and conditions for copying, distribution and modification follow.
+
+TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+0. This License applies to any program or other work which contains a notice placed by the copyright holder saying it may be distributed under the terms of this General Public License. The "Program", below, refers to any such program or work, and a "work based on the Program" means either the Program or any derivative work under copyright law: that is to say, a work containing the Program or a portion of it, either verbatim or with modifications and/or translated into another language. (Hereinafter, translation is included without limitation in the term "modification".) Each licensee is addressed as "you".
+
+Activities other than copying, distribution and modification are not covered by this License; they are outside its scope. The act of running the Program is not restricted, and the output from the Program is covered only if its contents constitute a work based on the Program (independent of having been made by running the Program). Whether that is true depends on what the Program does.
+
+1. You may copy and distribute verbatim copies of the Program's source code as you receive it, in any medium, provided that you conspicuously and appropriately publish on each copy an appropriate copyright notice and disclaimer of warranty; keep intact all the notices that refer to this License and to the absence of any warranty; and give any other recipients of the Program a copy of this License along with the Program.
+
+You may charge a fee for the physical act of transferring a copy, and you may at your option offer warranty protection in exchange for a fee.
+
+2. You may modify your copy or copies of the Program or any portion of it, thus forming a work based on the Program, and copy and distribute such modifications or work under the terms of Section 1 above, provided that you also meet all of these conditions:
+
+     a) You must cause the modified files to carry prominent notices stating that you changed the files and the date of any change.
+
+     b) You must cause any work that you distribute or publish, that in whole or in part contains or is derived from the Program or any part thereof, to be licensed as a whole at no charge to all third parties under the terms of this License.
+
+     c) If the modified program normally reads commands interactively when run, you must cause it, when started running for such interactive use in the most ordinary way, to print or display an announcement including an appropriate copyright notice and a notice that there is no warranty (or else, saying that you provide a warranty) and that users may redistribute the program under these conditions, and telling the user how to view a copy of this License. (Exception: if the Program itself is interactive but does not normally print such an announcement, your work based on the Program is not required to print an announcement.)
+
+These requirements apply to the modified work as a whole. If identifiable sections of that work are not derived from the Program, and can be reasonably considered independent and separate works in themselves, then this License, and its terms, do not apply to those sections when you distribute them as separate works. But when you distribute the same sections as part of a whole which is a work based on the Program, the distribution of the whole must be on the terms of this License, whose permissions for other licensees extend to the entire whole, and thus to each and every part regardless of who wrote it.
+
+Thus, it is not the intent of this section to claim rights or contest your rights to work written entirely by you; rather, the intent is to exercise the right to control the distribution of derivative or collective works based on the Program.
+
+In addition, mere aggregation of another work not based on the Program with the Program (or with a work based on the Program) on a volume of a storage or distribution medium does not bring the other work under the scope of this License.
+
+3. You may copy and distribute the Program (or a work based on it, under Section 2) in object code or executable form under the terms of Sections 1 and 2 above provided that you also do one of the following:
+
+     a) Accompany it with the complete corresponding machine-readable source code, which must be distributed under the terms of Sections 1 and 2 above on a medium customarily used for software interchange; or,
+
+     b) Accompany it with a written offer, valid for at least three years, to give any third party, for a charge no more than your cost of physically performing source distribution, a complete machine-readable copy of the corresponding source code, to be distributed under the terms of Sections 1 and 2 above on a medium customarily used for software interchange; or,
+
+     c) Accompany it with the information you received as to the offer to distribute corresponding source code. (This alternative is allowed only for noncommercial distribution and only if you received the program in object code or executable form with such an offer, in accord with Subsection b above.)
+
+The source code for a work means the preferred form of the work for making modifications to it. For an executable work, complete source code means all the source code for all modules it contains, plus any associated interface definition files, plus the scripts used to control compilation and installation of the executable. However, as a special exception, the source code distributed need not include anything that is normally distributed (in either source or binary form) with the major components (compiler, kernel, and so on) of the operating system on which the executable runs, unless that component itself accompanies the executable.
+
+If distribution of executable or object code is made by offering access to copy from a designated place, then offering equivalent access to copy the source code from the same place counts as distribution of the source code, even though third parties are not compelled to copy the source along with the object code.
+
+4. You may not copy, modify, sublicense, or distribute the Program except as expressly provided under this License. Any attempt otherwise to copy, modify, sublicense or distribute the Program is void, and will automatically terminate your rights under this License. However, parties who have received copies, or rights, from you under this License will not have their licenses terminated so long as such parties remain in full compliance.
+
+5. You are not required to accept this License, since you have not signed it. However, nothing else grants you permission to modify or distribute the Program or its derivative works. These actions are prohibited by law if you do not accept this License. Therefore, by modifying or distributing the Program (or any work based on the Program), you indicate your acceptance of this License to do so, and all its terms and conditions for copying, distributing or modifying the Program or works based on it.
+
+6. Each time you redistribute the Program (or any work based on the Program), the recipient automatically receives a license from the original licensor to copy, distribute or modify the Program subject to these terms and conditions. You may not impose any further restrictions on the recipients' exercise of the rights granted herein. You are not responsible for enforcing compliance by third parties to this License.
+
+7. If, as a consequence of a court judgment or allegation of patent infringement or for any other reason (not limited to patent issues), conditions are imposed on you (whether by court order, agreement or otherwise) that contradict the conditions of this License, they do not excuse you from the conditions of this License. If you cannot distribute so as to satisfy simultaneously your obligations under this License and any other pertinent obligations, then as a consequence you may not distribute the Program at all. For example, if a patent license would not permit royalty-free redistribution of the Program by all those who receive copies directly or indirectly through you, then the only way you could satisfy both it and this License would be to refrain entirely from distribution of the Program.
+
+If any portion of this section is held invalid or unenforceable under any particular circumstance, the balance of the section is intended to apply and the section as a whole is intended to apply in other circumstances.
+
+It is not the purpose of this section to induce you to infringe any patents or other property right claims or to contest validity of any such claims; this section has the sole purpose of protecting the integrity of the free software distribution system, which is implemented by public license practices. Many people have made generous contributions to the wide range of software distributed through that system in reliance on consistent application of that system; it is up to the author/donor to decide if he or she is willing to distribute software through any other system and a licensee cannot impose that choice.
+
+This section is intended to make thoroughly clear what is believed to be a consequence of the rest of this License.
+
+8. If the distribution and/or use of the Program is restricted in certain countries either by patents or by copyrighted interfaces, the original copyright holder who places the Program under this License may add an explicit geographical distribution limitation excluding those countries, so that distribution is permitted only in or among countries not thus excluded. In such case, this License incorporates the limitation as if written in the body of this License.
+
+9. The Free Software Foundation may publish revised and/or new versions of the General Public License from time to time. Such new versions will be similar in spirit to the present version, but may differ in detail to address new problems or concerns.
+
+Each version is given a distinguishing version number. If the Program specifies a version number of this License which applies to it and "any later version", you have the option of following the terms and conditions either of that version or of any later version published by the Free Software Foundation. If the Program does not specify a version number of this License, you may choose any version ever published by the Free Software Foundation.
+
+10. If you wish to incorporate parts of the Program into other free programs whose distribution conditions are different, write to the author to ask for permission. For software which is copyrighted by the Free Software Foundation, write to the Free Software Foundation; we sometimes make exceptions for this. Our decision will be guided by the two goals of preserving the free status of all derivatives of our free software and of promoting the sharing and reuse of software generally.
+
+NO WARRANTY
+
+11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+
+END OF TERMS AND CONDITIONS
+
+How to Apply These Terms to Your New Programs
+
+If you develop a new program, and you want it to be of the greatest possible use to the public, the best way to achieve this is to make it free software which everyone can redistribute and change under these terms.
+
+To do so, attach the following notices to the program. It is safest to attach them to the start of each source file to most effectively convey the exclusion of warranty; and each file should have at least the "copyright" line and a pointer to where the full notice is found.
+
+     one line to give the program's name and an idea of what it does. Copyright (C) yyyy name of author
+
+     This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 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 General Public License for more details.
+
+     You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this when it starts in an interactive mode:
+
+     Gnomovision version 69, Copyright (C) year name of author Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. This is free software, and you are welcome to redistribute it under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate parts of the General Public License. Of course, the commands you use may be called something other than `show w' and `show c'; they could even be mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your school, if any, to sign a "copyright disclaimer" for the program, if necessary. Here is a sample; alter the names:
+
+     Yoyodyne, Inc., hereby disclaims all copyright interest in the program `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+signature of Ty Coon, 1 April 1989 Ty Coon, President of Vice

LICENSES/GPL-3.0-or-later.txt

@@ -0,0 +1,232 @@
+GNU GENERAL PUBLIC LICENSE
+Version 3, 29 June 2007
+
+Copyright © 2007 Free Software Foundation, Inc. <https://fsf.org/>
+
+Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed.
+
+Preamble
+
+The GNU General Public License is a free, copyleft license for software and other kinds of works.
+
+The licenses for most software and other practical works are designed to take away your freedom to share and change the works. By contrast, the GNU General Public License is intended to guarantee your freedom to share and change all versions of a program--to make sure it remains free software for all its users. We, the Free Software Foundation, use the GNU General Public License for most of our software; it applies also to any other work released this way by its authors. You can apply it to your programs, too.
+
+When we speak of free software, we are referring to freedom, not price. Our General Public Licenses are designed to make sure that you have the freedom to distribute copies of free software (and charge for them if you wish), that you receive source code or can get it if you want it, that you can change the software or use pieces of it in new free programs, and that you know you can do these things.
+
+To protect your rights, we need to prevent others from denying you these rights or asking you to surrender the rights. Therefore, you have certain responsibilities if you distribute copies of the software, or if you modify it: responsibilities to respect the freedom of others.
+
+For example, if you distribute copies of such a program, whether gratis or for a fee, you must pass on to the recipients the same freedoms that you received. You must make sure that they, too, receive or can get the source code. And you must show them these terms so they know their rights.
+
+Developers that use the GNU GPL protect your rights with two steps: (1) assert copyright on the software, and (2) offer you this License giving you legal permission to copy, distribute and/or modify it.
+
+For the developers' and authors' protection, the GPL clearly explains that there is no warranty for this free software. For both users' and authors' sake, the GPL requires that modified versions be marked as changed, so that their problems will not be attributed erroneously to authors of previous versions.
+
+Some devices are designed to deny users access to install or run modified versions of the software inside them, although the manufacturer can do so. This is fundamentally incompatible with the aim of protecting users' freedom to change the software. The systematic pattern of such abuse occurs in the area of products for individuals to use, which is precisely where it is most unacceptable. Therefore, we have designed this version of the GPL to prohibit the practice for those products. If such problems arise substantially in other domains, we stand ready to extend this provision to those domains in future versions of the GPL, as needed to protect the freedom of users.
+
+Finally, every program is threatened constantly by software patents. States should not allow patents to restrict development and use of software on general-purpose computers, but in those that do, we wish to avoid the special danger that patents applied to a free program could make it effectively proprietary. To prevent this, the GPL assures that patents cannot be used to render the program non-free.
+
+The precise terms and conditions for copying, distribution and modification follow.
+
+TERMS AND CONDITIONS
+
+0. Definitions.
+
+“This License” refers to version 3 of the GNU General Public License.
+
+“Copyright” also means copyright-like laws that apply to other kinds of works, such as semiconductor masks.
+
+“The Program” refers to any copyrightable work licensed under this License. Each licensee is addressed as “you”. “Licensees” and “recipients” may be individuals or organizations.
+
+To “modify” a work means to copy from or adapt all or part of the work in a fashion requiring copyright permission, other than the making of an exact copy. The resulting work is called a “modified version” of the earlier work or a work “based on” the earlier work.
+
+A “covered work” means either the unmodified Program or a work based on the Program.
+
+To “propagate” a work means to do anything with it that, without permission, would make you directly or secondarily liable for infringement under applicable copyright law, except executing it on a computer or modifying a private copy. Propagation includes copying, distribution (with or without modification), making available to the public, and in some countries other activities as well.
+
+To “convey” a work means any kind of propagation that enables other parties to make or receive copies. Mere interaction with a user through a computer network, with no transfer of a copy, is not conveying.
+
+An interactive user interface displays “Appropriate Legal Notices” to the extent that it includes a convenient and prominently visible feature that (1) displays an appropriate copyright notice, and (2) tells the user that there is no warranty for the work (except to the extent that warranties are provided), that licensees may convey the work under this License, and how to view a copy of this License. If the interface presents a list of user commands or options, such as a menu, a prominent item in the list meets this criterion.
+
+1. Source Code.
+The “source code” for a work means the preferred form of the work for making modifications to it. “Object code” means any non-source form of a work.
+
+A “Standard Interface” means an interface that either is an official standard defined by a recognized standards body, or, in the case of interfaces specified for a particular programming language, one that is widely used among developers working in that language.
+
+The “System Libraries” of an executable work include anything, other than the work as a whole, that (a) is included in the normal form of packaging a Major Component, but which is not part of that Major Component, and (b) serves only to enable use of the work with that Major Component, or to implement a Standard Interface for which an implementation is available to the public in source code form. A “Major Component”, in this context, means a major essential component (kernel, window system, and so on) of the specific operating system (if any) on which the executable work runs, or a compiler used to produce the work, or an object code interpreter used to run it.
+
+The “Corresponding Source” for a work in object code form means all the source code needed to generate, install, and (for an executable work) run the object code and to modify the work, including scripts to control those activities. However, it does not include the work's System Libraries, or general-purpose tools or generally available free programs which are used unmodified in performing those activities but which are not part of the work. For example, Corresponding Source includes interface definition files associated with source files for the work, and the source code for shared libraries and dynamically linked subprograms that the work is specifically designed to require, such as by intimate data communication or control flow between those subprograms and other parts of the work.
+
+The Corresponding Source need not include anything that users can regenerate automatically from other parts of the Corresponding Source.
+
+The Corresponding Source for a work in source code form is that same work.
+
+2. Basic Permissions.
+All rights granted under this License are granted for the term of copyright on the Program, and are irrevocable provided the stated conditions are met. This License explicitly affirms your unlimited permission to run the unmodified Program. The output from running a covered work is covered by this License only if the output, given its content, constitutes a covered work. This License acknowledges your rights of fair use or other equivalent, as provided by copyright law.
+
+You may make, run and propagate covered works that you do not convey, without conditions so long as your license otherwise remains in force. You may convey covered works to others for the sole purpose of having them make modifications exclusively for you, or provide you with facilities for running those works, provided that you comply with the terms of this License in conveying all material for which you do not control copyright. Those thus making or running the covered works for you must do so exclusively on your behalf, under your direction and control, on terms that prohibit them from making any copies of your copyrighted material outside their relationship with you.
+
+Conveying under any other circumstances is permitted solely under the conditions stated below. Sublicensing is not allowed; section 10 makes it unnecessary.
+
+3. Protecting Users' Legal Rights From Anti-Circumvention Law.
+No covered work shall be deemed part of an effective technological measure under any applicable law fulfilling obligations under article 11 of the WIPO copyright treaty adopted on 20 December 1996, or similar laws prohibiting or restricting circumvention of such measures.
+
+When you convey a covered work, you waive any legal power to forbid circumvention of technological measures to the extent such circumvention is effected by exercising rights under this License with respect to the covered work, and you disclaim any intention to limit operation or modification of the work as a means of enforcing, against the work's users, your or third parties' legal rights to forbid circumvention of technological measures.
+
+4. Conveying Verbatim Copies.
+You may convey verbatim copies of the Program's source code as you receive it, in any medium, provided that you conspicuously and appropriately publish on each copy an appropriate copyright notice; keep intact all notices stating that this License and any non-permissive terms added in accord with section 7 apply to the code; keep intact all notices of the absence of any warranty; and give all recipients a copy of this License along with the Program.
+
+You may charge any price or no price for each copy that you convey, and you may offer support or warranty protection for a fee.
+
+5. Conveying Modified Source Versions.
+You may convey a work based on the Program, or the modifications to produce it from the Program, in the form of source code under the terms of section 4, provided that you also meet all of these conditions:
+
+     a) The work must carry prominent notices stating that you modified it, and giving a relevant date.
+
+     b) The work must carry prominent notices stating that it is released under this License and any conditions added under section 7. This requirement modifies the requirement in section 4 to “keep intact all notices”.
+
+     c) You must license the entire work, as a whole, under this License to anyone who comes into possession of a copy. This License will therefore apply, along with any applicable section 7 additional terms, to the whole of the work, and all its parts, regardless of how they are packaged. This License gives no permission to license the work in any other way, but it does not invalidate such permission if you have separately received it.
+
+     d) If the work has interactive user interfaces, each must display Appropriate Legal Notices; however, if the Program has interactive interfaces that do not display Appropriate Legal Notices, your work need not make them do so.
+
+A compilation of a covered work with other separate and independent works, which are not by their nature extensions of the covered work, and which are not combined with it such as to form a larger program, in or on a volume of a storage or distribution medium, is called an “aggregate” if the compilation and its resulting copyright are not used to limit the access or legal rights of the compilation's users beyond what the individual works permit. Inclusion of a covered work in an aggregate does not cause this License to apply to the other parts of the aggregate.
+
+6. Conveying Non-Source Forms.
+You may convey a covered work in object code form under the terms of sections 4 and 5, provided that you also convey the machine-readable Corresponding Source under the terms of this License, in one of these ways:
+
+     a) Convey the object code in, or embodied in, a physical product (including a physical distribution medium), accompanied by the Corresponding Source fixed on a durable physical medium customarily used for software interchange.
+
+     b) Convey the object code in, or embodied in, a physical product (including a physical distribution medium), accompanied by a written offer, valid for at least three years and valid for as long as you offer spare parts or customer support for that product model, to give anyone who possesses the object code either (1) a copy of the Corresponding Source for all the software in the product that is covered by this License, on a durable physical medium customarily used for software interchange, for a price no more than your reasonable cost of physically performing this conveying of source, or (2) access to copy the Corresponding Source from a network server at no charge.
+
+     c) Convey individual copies of the object code with a copy of the written offer to provide the Corresponding Source. This alternative is allowed only occasionally and noncommercially, and only if you received the object code with such an offer, in accord with subsection 6b.
+
+     d) Convey the object code by offering access from a designated place (gratis or for a charge), and offer equivalent access to the Corresponding Source in the same way through the same place at no further charge. You need not require recipients to copy the Corresponding Source along with the object code. If the place to copy the object code is a network server, the Corresponding Source may be on a different server (operated by you or a third party) that supports equivalent copying facilities, provided you maintain clear directions next to the object code saying where to find the Corresponding Source. Regardless of what server hosts the Corresponding Source, you remain obligated to ensure that it is available for as long as needed to satisfy these requirements.
+
+     e) Convey the object code using peer-to-peer transmission, provided you inform other peers where the object code and Corresponding Source of the work are being offered to the general public at no charge under subsection 6d.
+
+A separable portion of the object code, whose source code is excluded from the Corresponding Source as a System Library, need not be included in conveying the object code work.
+
+A “User Product” is either (1) a “consumer product”, which means any tangible personal property which is normally used for personal, family, or household purposes, or (2) anything designed or sold for incorporation into a dwelling. In determining whether a product is a consumer product, doubtful cases shall be resolved in favor of coverage. For a particular product received by a particular user, “normally used” refers to a typical or common use of that class of product, regardless of the status of the particular user or of the way in which the particular user actually uses, or expects or is expected to use, the product. A product is a consumer product regardless of whether the product has substantial commercial, industrial or non-consumer uses, unless such uses represent the only significant mode of use of the product.
+
+“Installation Information” for a User Product means any methods, procedures, authorization keys, or other information required to install and execute modified versions of a covered work in that User Product from a modified version of its Corresponding Source. The information must suffice to ensure that the continued functioning of the modified object code is in no case prevented or interfered with solely because modification has been made.
+
+If you convey an object code work under this section in, or with, or specifically for use in, a User Product, and the conveying occurs as part of a transaction in which the right of possession and use of the User Product is transferred to the recipient in perpetuity or for a fixed term (regardless of how the transaction is characterized), the Corresponding Source conveyed under this section must be accompanied by the Installation Information. But this requirement does not apply if neither you nor any third party retains the ability to install modified object code on the User Product (for example, the work has been installed in ROM).
+
+The requirement to provide Installation Information does not include a requirement to continue to provide support service, warranty, or updates for a work that has been modified or installed by the recipient, or for the User Product in which it has been modified or installed. Access to a network may be denied when the modification itself materially and adversely affects the operation of the network or violates the rules and protocols for communication across the network.
+
+Corresponding Source conveyed, and Installation Information provided, in accord with this section must be in a format that is publicly documented (and with an implementation available to the public in source code form), and must require no special password or key for unpacking, reading or copying.
+
+7. Additional Terms.
+“Additional permissions” are terms that supplement the terms of this License by making exceptions from one or more of its conditions. Additional permissions that are applicable to the entire Program shall be treated as though they were included in this License, to the extent that they are valid under applicable law. If additional permissions apply only to part of the Program, that part may be used separately under those permissions, but the entire Program remains governed by this License without regard to the additional permissions.
+
+When you convey a copy of a covered work, you may at your option remove any additional permissions from that copy, or from any part of it. (Additional permissions may be written to require their own removal in certain cases when you modify the work.) You may place additional permissions on material, added by you to a covered work, for which you have or can give appropriate copyright permission.
+
+Notwithstanding any other provision of this License, for material you add to a covered work, you may (if authorized by the copyright holders of that material) supplement the terms of this License with terms:
+
+     a) Disclaiming warranty or limiting liability differently from the terms of sections 15 and 16 of this License; or
+
+     b) Requiring preservation of specified reasonable legal notices or author attributions in that material or in the Appropriate Legal Notices displayed by works containing it; or
+
+     c) Prohibiting misrepresentation of the origin of that material, or requiring that modified versions of such material be marked in reasonable ways as different from the original version; or
+
+     d) Limiting the use for publicity purposes of names of licensors or authors of the material; or
+
+     e) Declining to grant rights under trademark law for use of some trade names, trademarks, or service marks; or
+
+     f) Requiring indemnification of licensors and authors of that material by anyone who conveys the material (or modified versions of it) with contractual assumptions of liability to the recipient, for any liability that these contractual assumptions directly impose on those licensors and authors.
+
+All other non-permissive additional terms are considered “further restrictions” within the meaning of section 10. If the Program as you received it, or any part of it, contains a notice stating that it is governed by this License along with a term that is a further restriction, you may remove that term. If a license document contains a further restriction but permits relicensing or conveying under this License, you may add to a covered work material governed by the terms of that license document, provided that the further restriction does not survive such relicensing or conveying.
+
+If you add terms to a covered work in accord with this section, you must place, in the relevant source files, a statement of the additional terms that apply to those files, or a notice indicating where to find the applicable terms.
+
+Additional terms, permissive or non-permissive, may be stated in the form of a separately written license, or stated as exceptions; the above requirements apply either way.
+
+8. Termination.
+You may not propagate or modify a covered work except as expressly provided under this License. Any attempt otherwise to propagate or modify it is void, and will automatically terminate your rights under this License (including any patent licenses granted under the third paragraph of section 11).
+
+However, if you cease all violation of this License, then your license from a particular copyright holder is reinstated (a) provisionally, unless and until the copyright holder explicitly and finally terminates your license, and (b) permanently, if the copyright holder fails to notify you of the violation by some reasonable means prior to 60 days after the cessation.
+
+Moreover, your license from a particular copyright holder is reinstated permanently if the copyright holder notifies you of the violation by some reasonable means, this is the first time you have received notice of violation of this License (for any work) from that copyright holder, and you cure the violation prior to 30 days after your receipt of the notice.
+
+Termination of your rights under this section does not terminate the licenses of parties who have received copies or rights from you under this License. If your rights have been terminated and not permanently reinstated, you do not qualify to receive new licenses for the same material under section 10.
+
+9. Acceptance Not Required for Having Copies.
+You are not required to accept this License in order to receive or run a copy of the Program. Ancillary propagation of a covered work occurring solely as a consequence of using peer-to-peer transmission to receive a copy likewise does not require acceptance. However, nothing other than this License grants you permission to propagate or modify any covered work. These actions infringe copyright if you do not accept this License. Therefore, by modifying or propagating a covered work, you indicate your acceptance of this License to do so.
+
+10. Automatic Licensing of Downstream Recipients.
+Each time you convey a covered work, the recipient automatically receives a license from the original licensors, to run, modify and propagate that work, subject to this License. You are not responsible for enforcing compliance by third parties with this License.
+
+An “entity transaction” is a transaction transferring control of an organization, or substantially all assets of one, or subdividing an organization, or merging organizations. If propagation of a covered work results from an entity transaction, each party to that transaction who receives a copy of the work also receives whatever licenses to the work the party's predecessor in interest had or could give under the previous paragraph, plus a right to possession of the Corresponding Source of the work from the predecessor in interest, if the predecessor has it or can get it with reasonable efforts.
+
+You may not impose any further restrictions on the exercise of the rights granted or affirmed under this License. For example, you may not impose a license fee, royalty, or other charge for exercise of rights granted under this License, and you may not initiate litigation (including a cross-claim or counterclaim in a lawsuit) alleging that any patent claim is infringed by making, using, selling, offering for sale, or importing the Program or any portion of it.
+
+11. Patents.
+A “contributor” is a copyright holder who authorizes use under this License of the Program or a work on which the Program is based. The work thus licensed is called the contributor's “contributor version”.
+
+A contributor's “essential patent claims” are all patent claims owned or controlled by the contributor, whether already acquired or hereafter acquired, that would be infringed by some manner, permitted by this License, of making, using, or selling its contributor version, but do not include claims that would be infringed only as a consequence of further modification of the contributor version. For purposes of this definition, “control” includes the right to grant patent sublicenses in a manner consistent with the requirements of this License.
+
+Each contributor grants you a non-exclusive, worldwide, royalty-free patent license under the contributor's essential patent claims, to make, use, sell, offer for sale, import and otherwise run, modify and propagate the contents of its contributor version.
+
+In the following three paragraphs, a “patent license” is any express agreement or commitment, however denominated, not to enforce a patent (such as an express permission to practice a patent or covenant not to sue for patent infringement). To “grant” such a patent license to a party means to make such an agreement or commitment not to enforce a patent against the party.
+
+If you convey a covered work, knowingly relying on a patent license, and the Corresponding Source of the work is not available for anyone to copy, free of charge and under the terms of this License, through a publicly available network server or other readily accessible means, then you must either (1) cause the Corresponding Source to be so available, or (2) arrange to deprive yourself of the benefit of the patent license for this particular work, or (3) arrange, in a manner consistent with the requirements of this License, to extend the patent license to downstream recipients. “Knowingly relying” means you have actual knowledge that, but for the patent license, your conveying the covered work in a country, or your recipient's use of the covered work in a country, would infringe one or more identifiable patents in that country that you have reason to believe are valid.
+
+If, pursuant to or in connection with a single transaction or arrangement, you convey, or propagate by procuring conveyance of, a covered work, and grant a patent license to some of the parties receiving the covered work authorizing them to use, propagate, modify or convey a specific copy of the covered work, then the patent license you grant is automatically extended to all recipients of the covered work and works based on it.
+
+A patent license is “discriminatory” if it does not include within the scope of its coverage, prohibits the exercise of, or is conditioned on the non-exercise of one or more of the rights that are specifically granted under this License. You may not convey a covered work if you are a party to an arrangement with a third party that is in the business of distributing software, under which you make payment to the third party based on the extent of your activity of conveying the work, and under which the third party grants, to any of the parties who would receive the covered work from you, a discriminatory patent license (a) in connection with copies of the covered work conveyed by you (or copies made from those copies), or (b) primarily for and in connection with specific products or compilations that contain the covered work, unless you entered into that arrangement, or that patent license was granted, prior to 28 March 2007.
+
+Nothing in this License shall be construed as excluding or limiting any implied license or other defenses to infringement that may otherwise be available to you under applicable patent law.
+
+12. No Surrender of Others' Freedom.
+If conditions are imposed on you (whether by court order, agreement or otherwise) that contradict the conditions of this License, they do not excuse you from the conditions of this License. If you cannot convey a covered work so as to satisfy simultaneously your obligations under this License and any other pertinent obligations, then as a consequence you may not convey it at all. For example, if you agree to terms that obligate you to collect a royalty for further conveying from those to whom you convey the Program, the only way you could satisfy both those terms and this License would be to refrain entirely from conveying the Program.
+
+13. Use with the GNU Affero General Public License.
+Notwithstanding any other provision of this License, you have permission to link or combine any covered work with a work licensed under version 3 of the GNU Affero General Public License into a single combined work, and to convey the resulting work. The terms of this License will continue to apply to the part which is the covered work, but the special requirements of the GNU Affero General Public License, section 13, concerning interaction through a network will apply to the combination as such.
+
+14. Revised Versions of this License.
+The Free Software Foundation may publish revised and/or new versions of the GNU General Public License from time to time. Such new versions will be similar in spirit to the present version, but may differ in detail to address new problems or concerns.
+
+Each version is given a distinguishing version number. If the Program specifies that a certain numbered version of the GNU General Public License “or any later version” applies to it, you have the option of following the terms and conditions either of that numbered version or of any later version published by the Free Software Foundation. If the Program does not specify a version number of the GNU General Public License, you may choose any version ever published by the Free Software Foundation.
+
+If the Program specifies that a proxy can decide which future versions of the GNU General Public License can be used, that proxy's public statement of acceptance of a version permanently authorizes you to choose that version for the Program.
+
+Later license versions may give you additional or different permissions. However, no additional obligations are imposed on any author or copyright holder as a result of your choosing to follow a later version.
+
+15. Disclaimer of Warranty.
+THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+16. Limitation of Liability.
+IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+
+17. Interpretation of Sections 15 and 16.
+If the disclaimer of warranty and limitation of liability provided above cannot be given local legal effect according to their terms, reviewing courts shall apply local law that most closely approximates an absolute waiver of all civil liability in connection with the Program, unless a warranty or assumption of liability accompanies a copy of the Program in return for a fee.
+
+END OF TERMS AND CONDITIONS
+
+How to Apply These Terms to Your New Programs
+
+If you develop a new program, and you want it to be of the greatest possible use to the public, the best way to achieve this is to make it free software which everyone can redistribute and change under these terms.
+
+To do so, attach the following notices to the program. It is safest to attach them to the start of each source file to most effectively state the exclusion of warranty; and each file should have at least the “copyright” line and a pointer to where the full notice is found.
+
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+
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+
+     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 General Public License for more details.
+
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+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program does terminal interaction, make it output a short notice like this when it starts in an interactive mode:
+
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+     This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+     This is free software, and you are welcome to redistribute it under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate parts of the General Public License. Of course, your program's commands might be different; for a GUI interface, you would use an “about box”.
+
+You should also get your employer (if you work as a programmer) or school, if any, to sign a “copyright disclaimer” for the program, if necessary. For more information on this, and how to apply and follow the GNU GPL, see <https://www.gnu.org/licenses/>.
+
+The GNU General Public License does not permit incorporating your program into proprietary programs. If your program is a subroutine library, you may consider it more useful to permit linking proprietary applications with the library. If this is what you want to do, use the GNU Lesser General Public License instead of this License. But first, please read <https://www.gnu.org/philosophy/why-not-lgpl.html>.

LICENSES/LGPL-2.1-only.txt

@@ -0,0 +1,175 @@
+GNU LESSER GENERAL PUBLIC LICENSE
+
+Version 2.1, February 1999
+
+Copyright (C) 1991, 1999 Free Software Foundation, Inc.
+51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+
+Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed.
+
+[This is the first released version of the Lesser GPL.  It also counts as the successor of the GNU Library Public License, version 2, hence the version number 2.1.]
+
+Preamble
+
+The licenses for most software are designed to take away your freedom to share and change it. By contrast, the GNU General Public Licenses are intended to guarantee your freedom to share and change free software--to make sure the software is free for all its users.
+
+This license, the Lesser General Public License, applies to some specially designated software packages--typically libraries--of the Free Software Foundation and other authors who decide to use it. You can use it too, but we suggest you first think carefully about whether this license or the ordinary General Public License is the better strategy to use in any particular case, based on the explanations below.
+
+When we speak of free software, we are referring to freedom of use, not price. Our General Public Licenses are designed to make sure that you have the freedom to distribute copies of free software (and charge for this service if you wish); that you receive source code or can get it if you want it; that you can change the software and use pieces of it in new free programs; and that you are informed that you can do these things.
+
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+
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+When a program is linked with a library, whether statically or using a shared library, the combination of the two is legally speaking a combined work, a derivative of the original library. The ordinary General Public License therefore permits such linking only if the entire combination fits its criteria of freedom. The Lesser General Public License permits more lax criteria for linking other code with the library.
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+12. If the distribution and/or use of the Library is restricted in certain countries either by patents or by copyrighted interfaces, the original copyright holder who places the Library under this License may add an explicit geographical distribution limitation excluding those countries, so that distribution is permitted only in or among countries not thus excluded. In such case, this License incorporates the limitation as if written in the body of this License.
+
+13. The Free Software Foundation may publish revised and/or new versions of the Lesser General Public License from time to time. Such new versions will be similar in spirit to the present version, but may differ in detail to address new problems or concerns.
+
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+
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+
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+
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+
+END OF TERMS AND CONDITIONS
+
+How to Apply These Terms to Your New Libraries
+
+If you develop a new library, and you want it to be of the greatest possible use to the public, we recommend making it free software that everyone can redistribute and change. You can do so by permitting redistribution under these terms (or, alternatively, under the terms of the ordinary General Public License).
+
+To apply these terms, attach the following notices to the library. It is safest to attach them to the start of each source file to most effectively convey the exclusion of warranty; and each file should have at least the "copyright" line and a pointer to where the full notice is found.
+
+     one line to give the library's name and an idea of what it does.
+     Copyright (C) year  name of author
+
+     This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) 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 Lesser General Public License for more details.
+
+     You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA Also add information on how to contact you by electronic and paper mail.
+
+You should also get your employer (if you work as a programmer) or your school, if any, to sign a "copyright disclaimer" for the library, if necessary. Here is a sample; alter the names:
+
+Yoyodyne, Inc., hereby disclaims all copyright interest in
+the library `Frob' (a library for tweaking knobs) written
+by James Random Hacker.
+
+signature of Ty Coon, 1 April 1990
+Ty Coon, President of Vice
+That's all there is to it!

LICENSES/Unlicense.txt

@@ -0,0 +1,10 @@
+This is free and unencumbered software released into the public domain.
+
+Anyone is free to copy, modify, publish, use, compile, sell, or distribute this software, either in source code form or as a compiled binary, for any purpose, commercial or non-commercial, and by any means.
+
+In jurisdictions that recognize copyright laws, the author or authors of this software dedicate any and all copyright interest in the software to the public domain. We make this dedication for the benefit of the public at large and to the detriment of our heirs and
+successors. We intend this dedication to be an overt act of relinquishment in perpetuity of all present and future rights to this software under copyright law.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+For more information, please refer to <http://unlicense.org/>

README.md

@@ -12,7 +12,7 @@ VILLASnode is a client/server application to connect simulation equipment and so
  - LabView,
  - and FPGA models
 
-by using protcols such as:
+by using protocols such as:
 
  - IEEE 802.2 Ethernet / IP / UDP,
  - ZeroMQ & nanomsg,
@@ -29,15 +29,21 @@ VILLASnode is used in distributed- and co-simulation scenarios and developed for
 
 ## Documentation
 
-User documentation is available here: <https://villas.fein-aachen.org/doc/node.html>
+User documentation is available here: <https://villas.fein-aachen.org/docs/>
 
-## Copyright
+## Related Projects
 
-2014-2021, Institute for Automation of Complex Power Systems, EONERC  
+- [MIOB](https://github.com/RWTH-ACS/miob)
+- [DINO](https://github.com/RWTH-ACS/dino)
+
+## Contributing
+
+All contributions are welcome!
+If you want to contribute to VILLASnode, please visit the [contribution guidelines](https://villas.fein-aachen.org/docs/node/development/contributing/) in our documentation.
 
 ## License
 
-This project is released under the terms of the [Apache 2.0 license](COPYING.md).
+This project is released under the terms of the [Apache 2.0 license](LICENSE).
 
 We kindly ask all academic publications employing components of VILLASframework to cite one of the following papers:
 
@@ -46,13 +52,22 @@ We kindly ask all academic publications employing components of VILLASframework
 
 For other licensing options please consult [Prof. Antonello Monti](mailto:amonti@eonerc.rwth-aachen.de).
 
+- SPDX-FileCopyrightText: 2014-2025 Institute for Automation of Complex Power Systems, RWTH Aachen University
+- SPDX-FileCopyrightText: 2023-2025 OPAL-RT Germany GmbH
+- SPDX-FileCopyrightText: 2022-2025 Niklas Eiling <niklas.eiling@eonerc.rwth-aachen.de>
+- SPDX-FileCopyrightText: 2018-2025 Steffen Vogel <post@steffenvogel.de>
+- SPDX-FileCopyrightText: 2018 Daniel Krebs <dkrebs@eonerc.rwth-aachen.de>
+- SPDX-License-Identifier: Apache-2.0
+
 ## Contact
 
 [![EONERC ACS Logo](doc/pictures/eonerc_logo.png)](http://www.acs.eonerc.rwth-aachen.de)
 
 - Steffen Vogel <post@steffenvogel.de>
-- Marija Stevic <mstevic@eonerc.rwth-aachen.de>
+- Niklas Eiling <niklas.eiling@eonerc.rwth-aachen.de>
+- Felix Wege <fwege@eonerc.rwth-aachen.de>
+- Alexandra Bach <alexandra.bach@eonerc.rwth-aachen.de>
 
-[Institute for Automation of Complex Power Systems (ACS)](http://www.acs.eonerc.rwth-aachen.de)  
-[EON Energy Research Center (EONERC)](http://www.eonerc.rwth-aachen.de)  
-[RWTH University Aachen, Germany](http://www.rwth-aachen.de)  
+[Institute for Automation of Complex Power Systems (ACS)](http://www.acs.eonerc.rwth-aachen.de)
+[EON Energy Research Center (EONERC)](http://www.eonerc.rwth-aachen.de)
+[RWTH University Aachen, Germany](http://www.rwth-aachen.de)

clients/CMakeLists.txt

@@ -1,9 +1,8 @@
 # CMakeLists.txt.
 #
-# @author Steffen Vogel <post@steffenvogel.de>
-# @copyright 2014-2022, Institute for Automation of Complex Power Systems, EONERC
-# @license Apache 2.0
-###################################################################################
+# Author: Steffen Vogel <post@steffenvogel.de>
+# SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
+# SPDX-License-Identifier: Apache-2.0
 
-add_subdirectory(opal)
+add_subdirectory(opal-rt/rtlab-asyncip)
 add_subdirectory(shmem)

clients/matlab/README.md

@@ -2,3 +2,8 @@
 
 Additional documentation about this example is available here:
 https://villas.fein-aachen.org/doc/node-client-matlab.html
+
+## License
+
+- SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
+- SPDX-License-Identifier: Apache-2.0

clients/matlab/receiver.m

@@ -1,9 +1,9 @@
 % Simple MATLAB code to receive VILLAS UDP samples
 %
-% @author Megha Gupta <meghagupta1191@gmail.com>
-% @author Steffen Vogel <post@steffenvogel.de>
-% @copyright 2014-2022, Institute for Automation of Complex Power Systems, EONERC
-% @license Apache 2.0
+% Author: Megha Gupta <meghagupta1191@gmail.com>
+% Author: Steffen Vogel <post@steffenvogel.de>
+% SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
+% SPDX-License-Identifier: Apache-2.0
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
 close all;
@@ -32,9 +32,9 @@ disp('Receiving data');
 while i < num_samples
     % Wait for connection
     % Read data from the socket
-    
+
     [ dat, count ] = fread(t, num_values, 'float32');
-    
+
     data(:,i) = dat;
     i = i + 1;
 end

clients/matlab/villas.conf

@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
+# SPDX-License-Identifier: Apache-2.0
+
 nodes = {
     signal = {
         type = "signal",

clients/opal-rt/hypersim-ucm/README.md

@@ -4,8 +4,14 @@ This directory contains a HYPERSIM user code model (UCM) for interfacing the HYP
 
 ## Documentation
 
-Detailed information for installation and usage of the UCM is provided in the [user documentation](https://villas.fein-aachen.org/doc/node-client-hypersim.html).
+Detailed information for installation and usage of the UCM is provided in the [user documentation](https://villas.fein-aachen.org/docs/node/clients/opal_hypersim).
 
-## Author
+## Authors
 
 - Anju Meghwani <meghwani@iitk.ac.in>
+- Louis Birkner <louis.birkner@opal-rt.com>
+
+## License
+
+- SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
+- SPDX-License-Identifier: Apache-2.0

clients/opal-rt/hypersim-ucm/model/ucm_node.def

@@ -2,6 +2,9 @@
 %% Generated from : ucm_def_file_templ_en.sh Version 1.5
 %% Hypersim (Ucm) : (c) Hydro-Quebec -- 2005
 %%
+%% SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
+%% SPDX-License-Identifier: Apache-2.0
+%%
 %% -----------------------------------------------------------------------------
 %% Model : villas -- Fri Jun 15 12:07:11 PDT 2018
 %% -----------------------------------------------------------------------------
@@ -106,13 +109,12 @@ UCM_DESCRIPTION = "An interface the VILLASnode gateway"
 %% BEGIN DOCUMENTATION -- Enter model's documentation after this line...
 
 Full documentation of this model is available at:
-https://villas.fein-aachen.org/doc/node-client-hypersim.html
+https://villas.fein-aachen.org/docs/node/clients/opal_hypersim
 
-Author:
-
-## Author
+## Authors
 
 - Anju Meghwani <meghwani@iitk.ac.in>
+- Louis Birkner <louis.birkner@opal-rt.com>
 
 Anju Meghwani is a Research Establishment Officer at Indian Institute of Kanpur, India and worked in Washington State University, Pullman as visiting scholar in Summer 2018.
 During her visit, she developed an interfacing framework for VILLASnode and HYPERSIM.
@@ -158,7 +160,7 @@ UI-ASSIST is a joint research project between India and the US.
 %%      Min         :  Minimum value allowed.
 %%      Max         :  Maximum value allowed.
 %%      Flags       :  Ored values of flags definitions or '-'.
-%%                     Available values : 
+%%                     Available values :
 %%                       NOT_SIMUL_MOD : Cannot be modified during simulation.
 %%      Description :  Short description of parameter (BETWEEN DOUBLE QUOTES)
 %%
@@ -190,7 +192,7 @@ UI-ASSIST is a joint research project between India and the US.
 %%      Fields descriptions:
 %%
 %%      Name           :  Connector's unique identifier (tag).
-%%             
+%%
 %%      Units          :  Signal's units.
 %%                        Text field: use the official SI symbols.
 %%                        Enter a "-" when not used
@@ -216,8 +218,23 @@ UI-ASSIST is a joint research project between India and the US.
 switchr no int in auto S "Receive Data"
 switchs no int in auto S "Send Data"
 
-datain no double in auto I "Data Input" 
-dataout no double out auto O "Data Output"
+datain0 no double in auto I "Data Input 0"
+datain1 no double in auto I "Data Input 1"
+datain2 no double in auto I "Data Input 2"
+datain3 no double in auto I "Data Input 3"
+datain4 no double in auto I "Data Input 4"
+datain5 no double in auto I "Data Input 5"
+datain6 no double in auto I "Data Input 6"
+datain7 no double in auto I "Data Input 7"
+
+dataout0 no double out auto O "Data Output 0"
+dataout1 no double out auto O "Data Output 1"
+dataout2 no double out auto O "Data Output 2"
+dataout3 no double out auto O "Data Output 3"
+dataout4 no double out auto O "Data Output 4"
+dataout5 no double out auto O "Data Output 5"
+dataout6 no double out auto O "Data Output 6"
+dataout7 no double out auto O "Data Output 7"
 
 %% END CONTROL IOS
 %%^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -233,7 +250,7 @@ dataout no double out auto O "Data Output"
 %%      Fields descriptions:
 %%
 %%      Name           :  Node's unique identifier.
-%%             
+%%
 %%      Phases         :  Number of phases.
 %%                        Text field: Enter a number (1, 3) or
 %%                                    0 for dynamic number of phases.
@@ -398,13 +415,13 @@ dataout no double out auto O "Data Output"
 %%vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
 %% BEGIN PREPARATORY INCLUDES PATHS LIST -- Modify the following list...
 
-UCM_PREP_INCLUDES_PATHS = 
+UCM_PREP_INCLUDES_PATHS =
 
 %% END PREPARATORY INCLUDES PATHS LIST
 %%^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 %%
 %%     8.5- Required dependency libraries pathnames list.
-%%          
+%%
 %%          Enter the pathnames of your dependency libraries
 %%          separated by spaces after "=".
 %%          Put an "\" at end of line to continue list on next line.
@@ -434,7 +451,7 @@ UCM_PREP_INCLUDES_PATHS =
 %%vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
 %% BEGIN PREPARATORY DEPENDANT LIBRARIES LIST -- Modify the following list...
 
-UCM_PREP_DEP_LIBS_PATHNAMES = 
+UCM_PREP_DEP_LIBS_PATHNAMES =
 
 %% END PREPARATORY DEPENDANT LIBRARIES LIST
 %%^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -449,7 +466,7 @@ UCM_PREP_DEP_LIBS_PATHNAMES =
 %%vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
 %% BEGIN PREPARATORY LIBRARIES LIST -- Modify the following list...
 
-UCM_PREP_LIBRARIES = 
+UCM_PREP_LIBRARIES =
 
 %% END PREPARATORY LIBRARIES LIST
 %%^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -524,7 +541,8 @@ UCM_PREP_LIBRARIES =
 #define REMOTE_ADR		"192.168.1.188"
 
 #define MAX_VALUES		64
-#define NO_SEND_DATA	3
+#define NO_SEND_DATA	8
+#define NO_RECV_DATA	8
 
 /***** User Settings End ******/
 
@@ -627,9 +645,9 @@ struct sockaddr_in rec_addr;
 %%
 %%vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
 %% BEGIN SIMULATION INITIALIZATION FUNCTION CODE -- Enter code ->...
-	
+
 	int ret;
-	unsigned int yes = 1; 
+	unsigned int yes = 1;
 
 	if ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0 ) {
         perror("socket creation failed");
@@ -640,7 +658,7 @@ struct sockaddr_in rec_addr;
         perror("socket creation failed");
         exit(EXIT_FAILURE);
     }
-    
+
 	memset(&rec_addr, 0, sizeof(rec_addr));
 	rec_addr.sin_family = AF_INET; // IPv4
     rec_addr.sin_addr.s_addr = htonl(INADDR_ANY);
@@ -651,12 +669,12 @@ struct sockaddr_in rec_addr;
     send_addr.sin_addr.s_addr = inet_addr(REMOTE_ADR);
     send_addr.sin_port = htons(PORT);
 
-	if (bind(sockfd, (struct sockaddr*)&rec_addr, sizeof(struct sockaddr_in)) < 0) 
+	if (bind(sockfd, (struct sockaddr*)&rec_addr, sizeof(struct sockaddr_in)) < 0)
 		fprintf(stdout,"ERROR DETECTED !!! There is a problem in binding");
 
-	if (connect(sockfds, (struct sockaddr*)&send_addr, sizeof(struct sockaddr_in)) < 0) 
+	if (connect(sockfds, (struct sockaddr*)&send_addr, sizeof(struct sockaddr_in)) < 0)
 		fprintf(stdout,"ERROR DETECTED !!! There is a problem in connecting");
-	
+
 #if 0
 	// Join a multicast group
 	struct ip_mreq mreq;
@@ -684,7 +702,7 @@ struct sockaddr_in rec_addr;
 %%vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
 %% BEGIN BEFORE VOLTAGE CALCULATION CODE -- Enter code ->...
 
-	
+
 %% END BEFORE VOLTAGE CALCULATION CODE
 %%^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 %%
@@ -693,9 +711,9 @@ struct sockaddr_in rec_addr;
 %%
 %%vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
 %% BEGIN AFTER VOLTAGE CALCULATION -- Enter code ->...
-	
+
 	int ret;
-	
+
 	/* Receiving data */
 	char bufr[MSG_LEN(MAX_VALUES)];
 	struct msg *msgr = (struct msg *) bufr;
@@ -703,23 +721,40 @@ struct sockaddr_in rec_addr;
 	struct sockaddr_in cli_addr;
 	int cli_addrlen = sizeof(cli_addr);
 
-	if (switchr == 1) {	
+	if (switchr == 1) {
 		memset(&cli_addr, 0, sizeof(cli_addr));
 		memset((char *) msgr, 0, sizeof(bufr));
-		
+
 		ret = recvfrom(sockfd, (char *) msgr, sizeof(bufr), 0, (struct sockaddr *) &cli_addr, &cli_addrlen);
-		
+
 		msgr->length   = htons(msgr->length);
 		msgr->sequence = htonl(msgr->sequence);
 		msgr->ts.sec   = htonl(msgr->ts.sec);
 		msgr->ts.nsec  = htonl(msgr->ts.nsec);
-		msgr->data[0].i = ntohl(msgr->data[0].i);
-		
-		dataout = (float) msgr->data[0].f;
+
+		if (msgr->length >= NO_RECV_DATA) {
+			msgr->data[0].i = ntohl(msgr->data[0].i);
+			msgr->data[1].i = ntohl(msgr->data[1].i);
+			msgr->data[2].i = ntohl(msgr->data[2].i);
+			msgr->data[3].i = ntohl(msgr->data[3].i);
+			msgr->data[4].i = ntohl(msgr->data[4].i);
+			msgr->data[5].i = ntohl(msgr->data[5].i);
+			msgr->data[6].i = ntohl(msgr->data[6].i);
+			msgr->data[7].i = ntohl(msgr->data[7].i);
+
+			dataout0 = (float) msgr->data[0].f;
+			dataout1 = (float) msgr->data[1].f;
+			dataout2 = (float) msgr->data[2].f;
+			dataout3 = (float) msgr->data[3].f;
+			dataout4 = (float) msgr->data[4].f;
+			dataout5 = (float) msgr->data[5].f;
+			dataout6 = (float) msgr->data[6].f;
+			dataout7 = (float) msgr->data[7].f;
+		}
 	}
 
 	/* Sending data */
-	char buf[MSG_LEN(MAX_VALUES)];
+	char buf[MSG_LEN(NO_SEND_DATA)];
 	struct msg *msg = (struct msg *) buf;
 
 	struct timespec now;
@@ -737,14 +772,29 @@ struct sockaddr_in rec_addr;
 		msg->ts.sec = now.tv_sec;
 		msg->ts.nsec = now.tv_nsec;
 
-		msg->data[0].f = datain;		
+		msg->data[0].f = datain0;
+		msg->data[1].f = datain1;
+		msg->data[2].f = datain2;
+		msg->data[3].f = datain3;
+		msg->data[3].f = datain3;
+		msg->data[4].f = datain4;
+		msg->data[5].f = datain5;
+		msg->data[6].f = datain6;
+
 		msg->data[0].i = htonl(msg->data[0].i);
+		msg->data[1].i = htonl(msg->data[1].i);
+		msg->data[2].i = htonl(msg->data[2].i);
+		msg->data[3].i = htonl(msg->data[3].i);
+		msg->data[4].i = htonl(msg->data[4].i);
+		msg->data[5].i = htonl(msg->data[5].i);
+		msg->data[6].i = htonl(msg->data[6].i);
+		msg->data[7].i = htonl(msg->data[7].i);
 
 		msg->length   = htons(msg->length);
 		msg->sequence = htonl(msg->sequence);
 		msg->ts.sec   = htonl(msg->ts.sec);
 		msg->ts.nsec  = htonl(msg->ts.nsec);
-		
+
 		ret = sendto(sockfds, (char *) msg, MSG_LEN(NO_SEND_DATA), 0, (struct sockaddr *) &send_addr, sizeof(send_addr));
 	}
 
@@ -758,7 +808,7 @@ struct sockaddr_in rec_addr;
 %%vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
 %% BEGIN SIMULATION INCLUDES PATHS LIST -- Modify the following list...
 
-UCM_SIMULATION_INCLUDES_PATHS = 
+UCM_SIMULATION_INCLUDES_PATHS =
 
 %% END SIMULATION INCLUDES PATHS LIST
 %%^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -773,7 +823,7 @@ UCM_SIMULATION_INCLUDES_PATHS =
 %%vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
 %% BEGIN SIMULATION DEP LIBS LIST -- Modify the following list...
 
-UCM_SIMULATION_DEP_LIBS_PATHNAMES = 
+UCM_SIMULATION_DEP_LIBS_PATHNAMES =
 
 %% END SIMULATION DEP LIBS LIST
 %%^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -785,20 +835,20 @@ UCM_SIMULATION_DEP_LIBS_PATHNAMES =
 %%
 %%          ARCHITECTURE DEPENDANT PATHS: See NOTE in section 8.5
 %%
-%%          UCM_SIMULATION_LIBRARIES_<ARCH>: use for compiler dependant librairies 
+%%          UCM_SIMULATION_LIBRARIES_<ARCH>: use for compiler dependant librairies
 %%
 %%vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
 %% BEGIN SIMULATION LIBRARIES LIST -- Modify the following list...
 
-UCM_SIMULATION_LIBRARIES = 
-UCM_SIMULATION_LIBRARIES_WINDOWS = 
-UCM_SIMULATION_LIBRARIES_LINUX_RHEL5_32 =  
-UCM_SIMULATION_LIBRARIES_LINUX_RHEL6_64 = 
-UCM_SIMULATION_LIBRARIES_LINUX_SLES9_ia64 = 
-UCM_SIMULATION_LIBRARIES_LINUX_SLES10_ia64 = 
-UCM_SIMULATION_LIBRARIES_LINUX_SLES11SP1_x86_64 = 
-UCM_SIMULATION_LIBRARIES_LINUX_SLES11SP3_x86_64 = 
-UCM_SIMULATION_LIBRARIES_LINUX_SLES12SP1_x86_64 = 
+UCM_SIMULATION_LIBRARIES =
+UCM_SIMULATION_LIBRARIES_WINDOWS =
+UCM_SIMULATION_LIBRARIES_LINUX_RHEL5_32 =
+UCM_SIMULATION_LIBRARIES_LINUX_RHEL6_64 =
+UCM_SIMULATION_LIBRARIES_LINUX_SLES9_ia64 =
+UCM_SIMULATION_LIBRARIES_LINUX_SLES10_ia64 =
+UCM_SIMULATION_LIBRARIES_LINUX_SLES11SP1_x86_64 =
+UCM_SIMULATION_LIBRARIES_LINUX_SLES11SP3_x86_64 =
+UCM_SIMULATION_LIBRARIES_LINUX_SLES12SP1_x86_64 =
 
 %% END SIMULATION LIBRARIES LIST
 %%^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

clients/opal-rt/rtlab-asyncip/.gitignore

@@ -0,0 +1,4 @@
+# SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
+# SPDX-License-Identifier: Apache-2.0
+
+*.log

clients/opal-rt/rtlab-asyncip/.project

@@ -10,3 +10,7 @@
 		<nature>com.opalrt.rtlab.ui.rtlabnature</nature>
 	</natures>
 </projectDescription>
+<!-- 
+SPDX-FileCopyrightText: 2014-2022 Institute for Automation of Complex Power Systems, EONERC
+SPDX-License-Identifier: Apache-2.0
+-->

clients/opal-rt/rtlab-asyncip/CMakeLists.txt

@@ -1,9 +1,8 @@
 # CMakeLists.txt.
 #
-# @author Steffen Vogel <post@steffenvogel.de>
-# @copyright 2014-2022, Institute for Automation of Complex Power Systems, EONERC
-# @license Apache 2.0
-###################################################################################
+# Author: Steffen Vogel <post@steffenvogel.de>
+# SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
+# SPDX-License-Identifier: Apache-2.0
 
 if(OPAL_FOUND)
     # Just call the original Makefile

clients/opal-rt/rtlab-asyncip/models/send_receive/.gitignore

@@ -0,0 +1,11 @@
+# SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
+# SPDX-License-Identifier: Apache-2.0
+
+*.o
+*.d
+AsyncIP
+Opcommon/
+report/
+*_sm_model/
+*_ss_model/
+*_sc_console.mdl

clients/opal-rt/rtlab-asyncip/models/send_receive/AsyncIP.mk

@@ -0,0 +1,66 @@
+# Makefile.
+#
+# Author: Steffen Vogel <post@steffenvogel.de>
+# SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
+# SPDX-License-Identifier: Apache-2.0
+
+# Specify program name
+PROGRAM = AsyncIP
+
+TARGET_RTLAB_ROOT ?= /usr/opalrt
+RTLAB_ROOT = $(TARGET_RTLAB_ROOT)
+
+# Intel is the default compiler
+RTLAB_INTEL_COMPILER ?= 0
+ifeq ($(RTLAB_INTEL_COMPILER),1)
+	CC = opicc
+else
+	CC = gcc
+endif
+
+LIB_TARGET = -lpthread -lrt -lm
+
+# Add Intel C library for compilation with gcc
+ifeq ($(RTLAB_INTEL_COMPILER),0)
+	LIB_TARGET += -lirc -ldl
+else
+	LD_OPTS += -diag-disable remark,warn
+endif
+
+LD := $(CC)
+
+CC_OPTS  = -std=c99 -D_GNU_SOURCE -MMD
+LD_OPTS  =
+OBJS     = main.o msg.o utils.o socket.o
+
+ifeq ($(DEBUG),1)
+	CC_OPTS += -g -D_DEBUG
+	LD_OPTS += -g
+else
+	CC_OPTS += -O
+endif
+
+ifneq ($(PROTOCOL),)
+	CC_OPTS += -DPROTOCOL=$(PROTOCOL)
+endif
+
+INCPATH = -I. -I$(RTLAB_ROOT)/common/include_target
+LIBPATH = -L. $(OPAL_LIBPATH)
+
+# The required libraries are transfered automatically in the model directory before compilation
+LIBS := -lOpalAsyncApiCore -lOpalCore -lOpalUtils $(OPAL_LIBS) $(LIB_TARGET)
+CFLAGS	= $(CC_OPTS) $(INCPATH)
+LDFLAGS = $(LD_OPTS) $(LIBPATH)
+
+all: $(PROGRAM)
+
+install:
+	\mkdir -p $(RTLAB_ROOT)/local
+	\chmod 755 $(RTLAB_ROOT/local
+	\cp -f $(PROGRAM) $(RTLAB_ROOT)/local
+
+clean:
+	\rm -f $(OBJS) $(PROGRAM)
+
+$(PROGRAM): $(OBJS)
+	$(LD) $(LDFLAGS) -o $@ $(OBJS) -Wl,--start-group $(LIBS) -Wl,--end-group

clients/opal-rt/rtlab-asyncip/models/send_receive/include/config.h

@@ -0,0 +1,25 @@
+/* Compile-time configuration.
+ *
+ * Author: Steffen Vogel <post@steffenvogel.de>
+ * SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#ifndef _CONFIG_H_
+#define _CONFIG_H_
+
+#define PROGNAME "VILLASnode-OPAL-UDP"
+#define VERSION "0.7"
+
+#define MAX_VALUES 64
+
+// List of protocols
+#define VILLAS 1
+#define GTNET_SKT 2
+
+// Default protocol
+#ifndef PROTOCOL
+#define PROTOCOL VILLAS
+#endif // PROTOCOL
+
+#endif // _CONFIG_H_

clients/opal-rt/rtlab-asyncip/models/send_receive/include/msg.h

@@ -1,17 +1,16 @@
-/** Message related functions
+/* Message related functions.
  *
- * @file
- * @author Steffen Vogel <post@steffenvogel.de>
- * @copyright 2014-2022, Institute for Automation of Complex Power Systems, EONERC
- * @license Apache 2.0
- *********************************************************************************/
+ * Author: Steffen Vogel <post@steffenvogel.de>
+ * SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
 #pragma once
 
-/* Forward declarations. */
+// Forward declarations
 struct msg;
 
-/** Swaps the byte-order of the message.
+/* Swaps the byte-order of the message.
  *
  * Message are always transmitted in network (big endian) byte order.
  *
@@ -25,7 +24,7 @@ void msg_ntoh(struct msg *m);
 
 void msg_hton(struct msg *m);
 
-/** Check the consistency of a message.
+/* Check the consistency of a message.
  *
  * The functions checks the header fields of a message.
  *

clients/opal-rt/rtlab-asyncip/models/send_receive/include/msg_format.h

@@ -0,0 +1,72 @@
+/* Message format.
+ *
+ * Author: Steffen Vogel <post@steffenvogel.de>
+ * SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#pragma once
+
+#include <stdint.h>
+
+// The current version number for the message format
+#define MSG_VERSION 2
+
+// TODO: Implement more message types
+#define MSG_TYPE_DATA 0  // Message contains float values
+#define MSG_TYPE_START 1 // Message marks the beginning of a new simulation case
+#define MSG_TYPE_STOP 2  // Message marks the end of a simulation case
+
+// The total size in bytes of a message
+#define MSG_LEN(values) (sizeof(struct msg) + MSG_DATA_LEN(values))
+
+// The length of \p values values in bytes
+#define MSG_DATA_LEN(values) (sizeof(float) * (values))
+
+// The offset to the first data value in a message
+#define MSG_DATA_OFFSET(msg) ((char *)(msg) + offsetof(struct msg, data))
+
+// Initialize a message with default values
+#define MSG_INIT(len, seq)                                                     \
+  (struct msg) {                                                               \
+    .version = MSG_VERSION, .type = MSG_TYPE_DATA, .length = len,              \
+    .sequence = seq, .id = 0                                                   \
+  }
+
+// The timestamp of a message in struct timespec format
+#define MSG_TS(msg)                                                            \
+  (struct timespec) { .tv_sec = (msg)->ts.sec, .tv_nsec = (msg)->ts.nsec }
+
+// This message format is used by all clients
+struct msg {
+#if BYTE_ORDER == BIG_ENDIAN
+  unsigned
+      version : 4; // Specifies the format of the remaining message (see MGS_VERSION)
+  unsigned type : 2;      // Data or control message (see MSG_TYPE_*)
+  unsigned reserved1 : 2; // Reserved bits
+#elif BYTE_ORDER == LITTLE_ENDIAN
+  unsigned reserved1 : 2; // Reserved bits
+  unsigned type : 2;      // Data or control message (see MSG_TYPE_*)
+  unsigned
+      version : 4; // Specifies the format of the remaining message (see MGS_VERSION)
+#else
+#error Invalid byte-order
+#endif // BYTEORDER
+
+  uint8_t id;      // An id which identifies the source of this sample
+  uint16_t length; // The number of values in msg::data[]
+  uint32_t
+      sequence; // The sequence number is incremented by one for consecutive messages
+
+  // A timestamp per message
+  struct {
+    uint32_t sec;  // Seconds since 1970-01-01 00:00:00
+    uint32_t nsec; // Nanoseconds of the current second
+  } ts;
+
+  // The message payload
+  union {
+    float f;    // Floating point values
+    uint32_t i; // Integer values
+  } data[];
+} __attribute__((packed));

clients/opal-rt/rtlab-asyncip/models/send_receive/include/socket.h

@@ -0,0 +1,33 @@
+/* Helper functions for sockets.
+ *
+ * Author: Steffen Vogel <post@steffenvogel.de>
+ * SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#ifndef _SOCKET_H_
+#define _SOCKET_H_
+
+#include <netinet/in.h>
+
+#define RT
+#include "OpalGenAsyncParamCtrl.h"
+
+#define UDP_PROTOCOL 1
+#define TCP_PROTOCOL 2
+
+struct socket {
+  struct sockaddr_in send_ad; // Send address
+  struct sockaddr_in recv_ad; // Receive address
+  int sd;                     // socket descriptor
+};
+
+int socket_init(struct socket *s, Opal_GenAsyncParam_Ctrl IconCtrlStruct);
+
+int socket_send(struct socket *s, char *data, int len);
+
+int socket_recv(struct socket *s, char *data, int len, double timeout);
+
+int socket_close(struct socket *s, Opal_GenAsyncParam_Ctrl IconCtrlStruct);
+
+#endif // _SOCKET_H_

clients/opal-rt/rtlab-asyncip/models/send_receive/include/utils.h

@@ -0,0 +1,15 @@
+/* Configure scheduler.
+ *
+ * Author: Steffen Vogel <post@steffenvogel.de>
+ * Author: Mathieu Dubé-Dallaire
+ * SPDX-FileCopyrightText: 2003 OPAL-RT Technologies inc
+ * SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#ifndef _UTILS_H_
+#define _UTILS_H_
+
+int AssignProcToCpu0(void);
+
+#endif // _UTILS_H_

clients/opal-rt/rtlab-asyncip/models/send_receive/send_receive.llm

@@ -1,3 +1,5 @@
+# SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
+# SPDX-License-Identifier: Apache-2.0
 [EnvVars]
 ABORT_COMPILE_WHEN_NO_BITSTREAM=0
 ACTION_AFTER_N_OVERRUNS=10
@@ -24,8 +26,8 @@ MSG_PRECISION_FACTOR=0
 MaxDynamicSignals=2/0/100/24/44/
 NB_STEP_WITHOUT_OVERRUNS=10
 OPAL_DEBUG=OFF
-OP_MATLABR2014B=1
-OS_COMPILE_RELEASE=2.6.29.6-opalrt-5
+OP_MATLABR2021B=1
+OS_COMPILE_RELEASE=OPAL-RTLinux 3.5.4 (4.19.80)
 PRINT_LOG_LEVEL=DEBUG_RUN
 RESET_IO_MISSING=ON
 SYSNAME=linux
@@ -36,42 +38,34 @@ WATCHDOG_TIMEOUT=5000
 INTERNAL_IGN_SOURCE_FILE=sfun_gen_async_ctrl.c sfun_recv_async.c sfun_send_async.c
 INTERNAL_LIBRARY2=-lOpalAsyncApiR2014b
 INTERNAL_LIBRARY3=-lOpalAsyncApiCore
-[ExtraPutFilesComp]
-Makefile.mk=Ascii
-include\config.h=Ascii
-include\msg.h=Ascii
-include\msg_format.h=Ascii
-include\socket.h=Ascii
-include\utils.h=Ascii
-src\compat.c=Ascii
-src\main.c=Ascii
-src\msg.c=Ascii
-src\socket.c=Ascii
-src\utils.c=Ascii
 [General]
-ATT_CHECKSUM1=2360032266
-ATT_CHECKSUM2=1041833943
-ATT_CHECKSUM3=842695092
-ATT_CHECKSUM4=2435976698
+ATT_CHECKSUM1=4135475928
+ATT_CHECKSUM2=3941568524
+ATT_CHECKSUM3=2861311461
+ATT_CHECKSUM4=1582866546
 ATT_CREATED_BY=jwu
 ATT_CREATED_ON=Thu Apr 15 08:21:54 1999
 ATT_ENABLE_PTA=OFF
 ATT_HANDLE_CONSOLE=ON
-ATT_LAST_SAVED_BY=svo
-ATT_LAST_SAVED_ON=Thu Jun 29 20:16:22 2017
+ATT_LAST_SAVED_BY=SteffenVogel
+ATT_LAST_SAVED_ON=Thu Oct 31 12:47:23 2024
 ATT_REFERENCE_MDL_PATHS=
-ATT_REVISION=1.454
+ATT_REVISION=15.0
 AutoRetrieveFiles=ON
 AutoRetrieveRtlab=ON
 CompilerVersion=AUTOMATIC
 DESCRIPTION=
 DinamoFlag=OFF
-FILENAME=C:\Users\svo\workspace\villas\node\clients\opal\models\send_receive\send_receive.mdl
+EXATACPS_AUTORUN=FALSE
+EXATACPS_AUTOSTOP=FALSE
+EXATACPS_EXE=
+EXATACPS_SCENARIO=::json::
+FILENAME=C:\Git\external\villas\node\clients\opal\models\send_receive\send_receive.mdl
 FORCE_RECOMPILE=0
 IMPORTED_GLOBAL_VARIABLES=1
-LastCompileRtlabVersion=v11.0.8.13
-LastMatlabUsed=27
-LastMatlabUsedName=v8.4
+LastCompileRtlabVersion=v2024.3.2.48
+LastMatlabUsed=169
+LastMatlabUsedName=v9.11
 MATLAB_USED_IN_MODEL=21
 Name=send_receive
 PETALINUX_LAST_COMPILE_VERSION=
@@ -79,7 +73,7 @@ PRINT_CYCLE=OFF
 PostBuildCmd=
 PreBuildCmd=
 QNX_LAST_COMPILE_VERSION=
-RH64_LAST_COMPILE_VERSION=
+RH64_LAST_COMPILE_VERSION=OPAL-RTLinux 3.5.4 (4.19.80)
 RH_LAST_COMPILE_VERSION=2.6.29.6-opalrt-5
 ReportFileId=
 RetrieveBuildTree=ON
@@ -87,18 +81,16 @@ RetrieveRootDir=
 SimulationMode=2
 TLC=Automatic
 TMF=Automatic
-TRANSFERFILE_AT_LOAD=OFF
+TRANSFERFILE_AT_LOAD=ON
 TargetCompileCmd=/usr/bin/make -f /usr/opalrt/common/bin/opalmodelmk
-TargetPlatform=REDHAWK
+TargetPlatform=REDHAWK64
 TimeFactor=1.000000000000000
 TimeStep=0.000050000000000
 sc_consoleTimeStep=-1.000000000000000
 sm_modelTimeStep=0.000049999998737
 sm_send_receiveTimeStep=0.000049999998737
-[General_1]
-TargetPreCompileCmd=make -f /usr/opalrt/common/bin/opalmodelmk
 [NodeMapping]
-sm_model=ACS_OPAL_RT
+sm_model=opalrtlinux
 sm_model_CORE_ASSIGNATION=1
 sm_model_CPU=-1
 sm_model_DEBUG=OFF
@@ -110,4 +102,25 @@ sm_send_receive_DEBUG=OFF
 sm_send_receive_XHP_ENABLE=FALSE
 [UserEnvVars]
 PROTOCOL=VILLAS
-RTLAB_INTEL_COMPILER=1
+[ExtraPutFilesComp]
+AsyncIP.mk=Ascii
+include\config.h=Ascii
+include\msg.h=Ascii
+include\msg_format.h=Ascii
+include\socket.h=Ascii
+include\utils.h=Ascii
+src\compat.c=Ascii
+src\main.c=Ascii
+src\msg.c=Ascii
+src\socket.c=Ascii
+src\utils.c=Ascii
+[ExtraGetFilesComp_1_RT_LAB]
+AsyncIP=Binary|Async_Proc
+[ExtraPutFilesLoad_1_RT_LAB]
+.\send_receive_sm_model\OpREDHAWK64target\AsyncIP=Binary|Async_Proc
+[EnvVars_REDHAWK64_DYN_1]
+INTERNAL_IGN_SOURCE_FILE=sfun_gen_async_ctrl.c sfun_recv_async.c sfun_send_async.c
+INTERNAL_LIBRARY2=-lOpalAsyncApiR2021B
+INTERNAL_LIBRARY3=-lOpalAsyncApiCore
+[General_1]
+TargetPreCompileCmd=make -f /usr/opalrt/common/bin/opalmodelmk

clients/opal-rt/rtlab-asyncip/models/send_receive/send_receive.mdl

@@ -1,4 +1,6 @@
 # $Revision: 1.1 $
+# SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
+# SPDX-License-Identifier: Apache-2.0
 Model {
   Name			  "send_receive"
   Version		  8.4

clients/opal-rt/rtlab-asyncip/models/send_receive/send_receive.probe

@@ -1,3 +1,5 @@
+# SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
+# SPDX-License-Identifier: Apache-2.0
 [General]
 ATT_VERSION=6
 FileVersion=6
@@ -17,8 +19,12 @@ numValues=200
 offset=0
 rearmDelay=0.000000
 repetitive=1
+signalId=0
+signalIndex=0
 signalName=
 signalNameId=0
+trigSigId=0
+trigSigIndex=0
 trigSigNameId=339755367
 trigSignalName=
 trigType=0
@@ -43,8 +49,12 @@ numValues=100
 offset=0
 rearmDelay=0.000000
 repetitive=1
+signalId=0
+signalIndex=0
 signalName=
 signalNameId=1818584175
+trigSigId=0
+trigSigIndex=0
 trigSigNameId=1866690149
 trigSignalName=
 trigType=0

clients/opal-rt/rtlab-asyncip/models/send_receive/src/main.c

@@ -0,0 +1,362 @@
+/* Main routine of AsyncIP.
+ *
+ * Author: Steffen Vogel <post@steffenvogel.de>
+ * SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+// Standard ANSI C headers needed for this program
+#include <errno.h>
+#include <fcntl.h>
+#include <pthread.h>
+#include <signal.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+
+/* Define RTLAB before including OpalPrint.h for messages to be sent
+ * to the OpalDisplay. Otherwise stdout will be used. */
+#define RTLAB
+#include "AsyncApi.h"
+#include "OpalPrint.h"
+
+// This is the message format
+#include "config.h"
+#include "socket.h"
+#include "utils.h"
+
+#if PROTOCOL == VILLAS
+#include "msg.h"
+#include "msg_format.h"
+#endif
+
+/* This is just for initializing the shared memory access to communicate
+ * with the RT-LAB model. It's easier to remember the arguments like this */
+#define ASYNC_SHMEM_NAME argv[1]
+#define ASYNC_SHMEM_SIZE atoi(argv[2])
+#define PRINT_SHMEM_NAME argv[3]
+
+// Global Variables
+struct socket skt;
+
+static void *SendToIPPort(void *arg) {
+  unsigned int ModelState, SendID, Sequence = 0;
+  int nbSend = 0, ret, cnt, len;
+
+  // Data from OPAL-RT model
+  double mdldata[MAX_VALUES];
+  int mdldata_size;
+
+#if PROTOCOL == VILLAS
+  char buf[MSG_LEN(MAX_VALUES)];
+  struct msg *msg = (struct msg *)buf;
+#elif PROTOCOL == GTNET_SKT
+  char buf[MAX_VALUES * sizeof(float)];
+  float *msg = (float *)buf;
+#endif
+
+  OpalPrint("%s: SendToIPPort thread started\n", PROGNAME);
+
+  OpalGetNbAsyncSendIcon(&nbSend);
+  if (nbSend < 1) {
+    OpalPrint("%s: SendToIPPort: No transimission block for this controller. "
+              "Stopping thread.\n",
+              PROGNAME);
+    return NULL;
+  }
+
+  do {
+    // This call unblocks when the 'Data Ready' line of a send icon is asserted.
+    ret = OpalWaitForAsyncSendRequest(&SendID);
+    if (ret != EOK) {
+      ModelState = OpalGetAsyncModelState();
+      if ((ModelState != STATE_RESET) && (ModelState != STATE_STOP)) {
+        OpalSetAsyncSendIconError(ret, SendID);
+        OpalPrint("%s: OpalWaitForAsyncSendRequest(), errno %d\n", PROGNAME,
+                  ret);
+      }
+
+      continue;
+    }
+
+    // No errors encountered yet
+    OpalSetAsyncSendIconError(0, SendID);
+
+    // Get the size of the data being sent by the unblocking SendID
+    OpalGetAsyncSendIconDataLength(&mdldata_size, SendID);
+    cnt = mdldata_size / sizeof(double);
+    if (cnt > MAX_VALUES) {
+      OpalPrint("%s: Number of signals for SendID=%d exceeds allowed maximum "
+                "(%d). Limiting...\n",
+                PROGNAME, SendID, MAX_VALUES);
+      cnt = MAX_VALUES;
+    }
+
+    // Read data from the model
+    OpalGetAsyncSendIconData(mdldata, mdldata_size, SendID);
+
+#if PROTOCOL == VILLAS
+    // Get current time
+    struct timespec now;
+    clock_gettime(CLOCK_REALTIME, &now);
+
+    msg->version = MSG_VERSION;
+    msg->type = MSG_TYPE_DATA;
+    msg->reserved1 = 0;
+    msg->id = SendID;
+    msg->length = cnt;
+    msg->sequence = Sequence++;
+    msg->ts.sec = now.tv_sec;
+    msg->ts.nsec = now.tv_nsec;
+
+    for (int i = 0; i < msg->length; i++)
+      msg->data[i].f = (float)mdldata[i];
+
+    len = MSG_LEN(msg->length);
+
+    msg_hton(msg);
+#elif PROTOCOL == GTNET_SKT
+    uint32_t *imsg = (uint32_t *)msg;
+    for (int i = 0; i < cnt; i++) {
+      msg[i] = (float)mdldata[i];
+      imsg[i] = htonl(imsg[i]);
+    }
+
+    len = cnt * sizeof(float);
+#else
+#error Unknown protocol
+#endif
+
+    // Perform the actual write to the ip port
+    ret = socket_send(&skt, (char *)msg, len);
+    if (ret < 0)
+      OpalSetAsyncSendIconError(errno, SendID);
+    else
+      OpalSetAsyncSendIconError(0, SendID);
+
+    /* This next call allows the execution of the "asynchronous" process
+     * to actually be synchronous with the model. To achieve this, you
+     * should set the "Sending Mode" in the Async_Send block to
+     * NEED_REPLY_BEFORE_NEXT_SEND or NEED_REPLY_NOW. This will force
+     * the model to wait for this process to call this
+     * OpalAsyncSendRequestDone function before continuing. */
+    OpalAsyncSendRequestDone(SendID);
+
+    /* Before continuing, we make sure that the real-time model
+     * has not been stopped. If it has, we quit. */
+    ModelState = OpalGetAsyncModelState();
+  } while ((ModelState != STATE_RESET) && (ModelState != STATE_STOP));
+
+  OpalPrint("%s: SendToIPPort: Finished\n", PROGNAME);
+
+  return NULL;
+}
+
+static void *RecvFromIPPort(void *arg) {
+  unsigned int ModelState, RecvID;
+  int nbRecv = 0, ret, cnt;
+
+  // Data from OPAL-RT model
+  double mdldata[MAX_VALUES];
+  int mdldata_size;
+
+#if PROTOCOL == VILLAS
+  char buf[MSG_LEN(MAX_VALUES)];
+  struct msg *msg = (struct msg *)buf;
+#elif PROTOCOL == GTNET_SKT
+  char buf[MAX_VALUES * sizeof(float)];
+  float *msg = (float *)buf;
+#else
+#error Unknown protocol
+#endif
+
+  OpalPrint("%s: RecvFromIPPort thread started\n", PROGNAME);
+
+  OpalGetNbAsyncRecvIcon(&nbRecv);
+  if (nbRecv < 1) {
+    OpalPrint("%s: RecvFromIPPort: No reception block for this controller. "
+              "Stopping thread.\n",
+              PROGNAME);
+    return NULL;
+  }
+
+  // Get list of RecvIds
+  unsigned int RecvIDs[nbRecv];
+  ret = OpalGetAsyncRecvIDList(RecvIDs, sizeof(RecvIDs));
+  if (ret != EOK) {
+    OpalPrint("%s: Failed to get list of RecvIDs\n", PROGNAME);
+    return NULL;
+  }
+
+  do {
+    // Receive message
+    ret = socket_recv(&skt, (char *)msg, sizeof(buf), 1.0);
+    if (ret < 1) {
+      ModelState = OpalGetAsyncModelState();
+      if ((ModelState != STATE_RESET) && (ModelState != STATE_STOP)) {
+        if (ret == 0) // timeout, so we continue silently
+          OpalPrint("%s: Timeout while waiting for data\n", PROGNAME, errno);
+        if (ret == -1) // a more serious error, so we print it
+          OpalPrint("%s: Error %d while waiting for data\n", PROGNAME, errno);
+
+        continue;
+      }
+      break;
+    }
+
+#if PROTOCOL == VILLAS
+    RecvID = msg->id;
+#elif PROTOCOL == GTNET_SKT
+    RecvID = 1;
+#else
+#error Unknown protocol
+#endif
+    // Check if this RecvID exists
+    for (int i = 0; i < nbRecv; i++) {
+      if (RecvIDs[i] == RecvID)
+        goto found;
+    }
+
+    OpalPrint("%s: Received message with non-existent RecvID=%d. Changing to "
+              "RecvID=%d...\n",
+              PROGNAME, RecvID, RecvIDs[0]);
+    RecvID = RecvIDs[0];
+
+  found: // Get the number of signals to send back to the model
+    OpalGetAsyncRecvIconDataLength(&mdldata_size, RecvID);
+    cnt = mdldata_size / sizeof(double);
+    if (cnt > MAX_VALUES) {
+      OpalPrint("%s: Number of signals for RecvID=%d (%d) exceeds allowed "
+                "maximum (%d)\n",
+                PROGNAME, RecvID, cnt, MAX_VALUES);
+      return NULL;
+    }
+
+#if PROTOCOL == VILLAS
+    msg_ntoh(msg);
+
+    ret = msg_verify(msg);
+    if (ret) {
+      OpalPrint("%s: Skipping invalid packet\n", PROGNAME);
+      continue;
+    }
+
+    if (cnt > msg->length) {
+      OpalPrint("%s: Number of signals for RecvID=%d (%d) exceeds what was "
+                "received (%d)\n",
+                PROGNAME, RecvID, cnt, msg->length);
+    }
+
+    for (int i = 0; i < msg->length; i++)
+      mdldata[i] = (double)msg->data[i].f;
+
+    // Update OPAL model
+    OpalSetAsyncRecvIconStatus(msg->sequence,
+                               RecvID); // Set the Status to the message ID
+#elif PROTOCOL == GTNET_SKT
+    uint32_t *imsg = (uint32_t *)msg;
+    for (int i = 0; i < cnt; i++) {
+      imsg[i] = ntohl(imsg[i]);
+      mdldata[i] = (double)msg[i];
+    }
+#else
+#error Unknown protocol
+#endif
+
+    OpalSetAsyncRecvIconError(0, RecvID); // Set the Error to 0
+
+    OpalSetAsyncRecvIconData(mdldata, mdldata_size, RecvID);
+
+    /* Before continuing, we make sure that the real-time model
+     * has not been stopped. If it has, we quit. */
+    ModelState = OpalGetAsyncModelState();
+  } while ((ModelState != STATE_RESET) && (ModelState != STATE_STOP));
+
+  OpalPrint("%s: RecvFromIPPort: Finished\n", PROGNAME);
+
+  return NULL;
+}
+
+int main(int argc, char *argv[]) {
+  int ret;
+
+  Opal_GenAsyncParam_Ctrl IconCtrlStruct;
+
+  pthread_t tid_send, tid_recv;
+
+  OpalPrint("%s: This is %s client version %s\n", PROGNAME, PROGNAME, VERSION);
+
+  // Check for the proper arguments to the program
+  if (argc < 4) {
+    printf("Invalid Arguments: 1-AsyncShmemName 2-AsyncShmemSize "
+           "3-PrintShmemName\n");
+    exit(0);
+  }
+
+  // Enable the OpalPrint function. This prints to the OpalDisplay.
+  ret = OpalSystemCtrl_Register(PRINT_SHMEM_NAME);
+  if (ret != EOK) {
+    printf("%s: ERROR: OpalPrint() access not available\n", PROGNAME);
+    exit(EXIT_FAILURE);
+  }
+
+  // Open Share Memory created by the model.
+  ret = OpalOpenAsyncMem(ASYNC_SHMEM_SIZE, ASYNC_SHMEM_NAME);
+  if (ret != EOK) {
+    OpalPrint("%s: ERROR: Model shared memory not available\n", PROGNAME);
+    exit(EXIT_FAILURE);
+  }
+
+  AssignProcToCpu0();
+
+  /* Get IP Controler Parameters (ie: ip address, port number...) and
+   * initialize the device on the QNX node. */
+  memset(&IconCtrlStruct, 0, sizeof(IconCtrlStruct));
+
+  ret = OpalGetAsyncCtrlParameters(&IconCtrlStruct, sizeof(IconCtrlStruct));
+  if (ret != EOK) {
+    OpalPrint("%s: ERROR: Could not get controller parameters (%d).\n",
+              PROGNAME, ret);
+    exit(EXIT_FAILURE);
+  }
+
+  // Initialize socket
+  ret = socket_init(&skt, IconCtrlStruct);
+  if (ret != EOK) {
+    OpalPrint("%s: ERROR: Failed to create socket.\n", PROGNAME);
+    exit(EXIT_FAILURE);
+  }
+
+  // Start send/receive threads
+  ret = pthread_create(&tid_send, NULL, SendToIPPort, NULL);
+  if (ret < 0)
+    OpalPrint("%s: ERROR: Could not create thread (SendToIPPort), errno %d\n",
+              PROGNAME, errno);
+
+  ret = pthread_create(&tid_recv, NULL, RecvFromIPPort, NULL);
+  if (ret < 0)
+    OpalPrint("%s: ERROR: Could not create thread (RecvFromIPPort), errno %d\n",
+              PROGNAME, errno);
+
+  // Wait for both threads to finish
+  ret = pthread_join(tid_send, NULL);
+  if (ret)
+    OpalPrint("%s: ERROR: pthread_join (SendToIPPort), errno %d\n", PROGNAME,
+              ret);
+
+  ret = pthread_join(tid_recv, NULL);
+  if (ret)
+    OpalPrint("%s: ERROR: pthread_join (RecvFromIPPort), errno %d\n", PROGNAME,
+              ret);
+
+  // Close the ip port and shared memories
+  socket_close(&skt, IconCtrlStruct);
+
+  OpalCloseAsyncMem(ASYNC_SHMEM_SIZE, ASYNC_SHMEM_NAME);
+  OpalSystemCtrl_UnRegister(PRINT_SHMEM_NAME);
+
+  return 0;
+}

clients/opal-rt/rtlab-asyncip/models/send_receive/src/msg.c

@@ -0,0 +1,50 @@
+/* Message related functions.
+ *
+ * Author: Steffen Vogel <post@steffenvogel.de>
+ * SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <arpa/inet.h>
+
+#include "msg.h"
+#include "msg_format.h"
+
+void msg_ntoh(struct msg *m) {
+  msg_hdr_ntoh(m);
+
+  for (int i = 0; i < m->length; i++)
+    m->data[i].i = ntohl(m->data[i].i);
+}
+
+void msg_hton(struct msg *m) {
+  for (int i = 0; i < m->length; i++)
+    m->data[i].i = htonl(m->data[i].i);
+
+  msg_hdr_hton(m);
+}
+
+void msg_hdr_hton(struct msg *m) {
+  m->length = htons(m->length);
+  m->sequence = htonl(m->sequence);
+  m->ts.sec = htonl(m->ts.sec);
+  m->ts.nsec = htonl(m->ts.nsec);
+}
+
+void msg_hdr_ntoh(struct msg *m) {
+  m->length = ntohs(m->length);
+  m->sequence = ntohl(m->sequence);
+  m->ts.sec = ntohl(m->ts.sec);
+  m->ts.nsec = ntohl(m->ts.nsec);
+}
+
+int msg_verify(struct msg *m) {
+  if (m->version != MSG_VERSION)
+    return -1;
+  else if (m->type != MSG_TYPE_DATA)
+    return -2;
+  else if (m->reserved1 != 0)
+    return -3;
+  else
+    return 0;
+}

clients/opal-rt/rtlab-asyncip/models/send_receive/src/socket.c

@@ -0,0 +1,181 @@
+/* Helper functions for sockets.
+ *
+ * Author: Steffen Vogel <post@steffenvogel.de>
+ * SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <arpa/inet.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <sys/time.h>
+#include <unistd.h>
+
+/* Define RTLAB before including OpalPrint.h for messages to be sent
+ * to the OpalDisplay. Otherwise stdout will be used. */
+#define RTLAB
+#include "AsyncApi.h"
+#include "OpalPrint.h"
+
+#include "config.h"
+#include "socket.h"
+
+int socket_init(struct socket *s, Opal_GenAsyncParam_Ctrl IconCtrlStruct) {
+  struct ip_mreq mreq; // Multicast group structure
+  unsigned char TTL = 1, LOOP = 0;
+  int rc, proto, ret;
+
+  proto = (int)IconCtrlStruct.FloatParam[0];
+  if (proto != UDP_PROTOCOL) {
+    OpalPrint("%s: This version of %s only supports UDP\n", PROGNAME, PROGNAME);
+    return EIO;
+  }
+
+  OpalPrint("%s: Version        : %s\n", PROGNAME, VERSION);
+  OpalPrint("%s: Remote Address : %s\n", PROGNAME,
+            IconCtrlStruct.StringParam[0]);
+  OpalPrint("%s: Remote Port    : %d\n", PROGNAME,
+            (int)IconCtrlStruct.FloatParam[1]);
+
+  // Initialize the socket
+  s->sd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
+  if (s->sd < 0) {
+    OpalPrint("%s: ERROR: Could not open socket\n", PROGNAME);
+    return EIO;
+  }
+
+  // Set the structure for the remote port and address
+  memset(&s->send_ad, 0, sizeof(s->send_ad));
+  s->send_ad.sin_family = AF_INET;
+  s->send_ad.sin_addr.s_addr = inet_addr(IconCtrlStruct.StringParam[0]);
+  s->send_ad.sin_port = htons((u_short)IconCtrlStruct.FloatParam[1]);
+
+  // Set the structure for the local port and address
+  memset(&s->recv_ad, 0, sizeof(s->recv_ad));
+  s->recv_ad.sin_family = AF_INET;
+  s->recv_ad.sin_addr.s_addr = INADDR_ANY;
+  s->recv_ad.sin_port = htons((u_short)IconCtrlStruct.FloatParam[2]);
+
+  // Bind local port and address to socket.
+  ret = bind(s->sd, (struct sockaddr *)&s->recv_ad, sizeof(struct sockaddr_in));
+  if (ret < 0) {
+    OpalPrint("%s: ERROR: Could not bind local port to socket\n", PROGNAME);
+    return EIO;
+  } else
+    OpalPrint("%s: Local Port     : %d\n", PROGNAME,
+              (int)IconCtrlStruct.FloatParam[2]);
+
+  // If sending to a multicast address
+  if ((inet_addr(IconCtrlStruct.StringParam[0]) & inet_addr("240.0.0.0")) ==
+      inet_addr("224.0.0.0")) {
+    ret = setsockopt(s->sd, IPPROTO_IP, IP_MULTICAST_TTL, (char *)&TTL,
+                     sizeof(TTL));
+    if (ret == -1) {
+      OpalPrint("%s: ERROR: Could not set TTL for multicast send (%d)\n",
+                PROGNAME, errno);
+      return EIO;
+    }
+
+    ret = setsockopt(s->sd, IPPROTO_IP, IP_MULTICAST_LOOP, (char *)&LOOP,
+                     sizeof(LOOP));
+    if (ret == -1) {
+      OpalPrint("%s: ERROR: Could not set loopback for multicast send (%d)\n",
+                PROGNAME, errno);
+      return EIO;
+    }
+
+    OpalPrint("%s: Configured socket for sending to multicast address\n",
+              PROGNAME);
+  }
+
+  // If receiving from a multicast group, register for it.
+  if (inet_addr(IconCtrlStruct.StringParam[1]) > 0) {
+    if ((inet_addr(IconCtrlStruct.StringParam[1]) & inet_addr("240.0.0.0")) ==
+        inet_addr("224.0.0.0")) {
+      mreq.imr_multiaddr.s_addr = inet_addr(IconCtrlStruct.StringParam[1]);
+      mreq.imr_interface.s_addr = INADDR_ANY;
+
+      // Have the multicast socket join the multicast group
+      ret = setsockopt(s->sd, IPPROTO_IP, IP_ADD_MEMBERSHIP, (char *)&mreq,
+                       sizeof(mreq));
+      if (ret == -1) {
+        OpalPrint("%s: ERROR: Could not join multicast group (%d)\n", PROGNAME,
+                  errno);
+        return EIO;
+      }
+
+      OpalPrint("%s: Added process to multicast group (%s)\n", PROGNAME,
+                IconCtrlStruct.StringParam[1]);
+    } else
+      OpalPrint("%s: WARNING: IP address for multicast group is not in "
+                "multicast range. Ignored\n",
+                PROGNAME);
+  }
+
+  return EOK;
+}
+
+int socket_close(struct socket *s, Opal_GenAsyncParam_Ctrl IconCtrlStruct) {
+  int ret;
+
+  ret = shutdown(s->sd, SHUT_RDWR);
+  if (ret)
+    return ret;
+
+  ret = close(s->sd);
+  if (ret)
+    return ret;
+
+  return 0;
+}
+
+int socket_send(struct socket *s, char *data, int len) {
+  return sendto(s->sd, data, len, 0, (struct sockaddr *)&s->send_ad,
+                sizeof(s->send_ad));
+}
+
+int socket_recv(struct socket *s, char *data, int len, double timeout) {
+  int ret;
+  struct sockaddr_in client_ad;
+  struct timeval tv;
+  socklen_t client_ad_size = sizeof(client_ad);
+  fd_set sd_set;
+
+  // Set the descriptor set for the select() call
+  FD_ZERO(&sd_set);
+  FD_SET(s->sd, &sd_set);
+
+  // Set the tv structure to the correct timeout value
+  tv.tv_sec = (int)timeout;
+  tv.tv_usec = (int)((timeout - tv.tv_sec) * 1000000);
+
+  /* Wait for a packet. We use select() to have a timeout. This is
+   * necessary when reseting the model so we don't wait indefinitely
+   * and prevent the process from exiting and freeing the port for
+   * a future instance (model load). */
+  ret = select(s->sd + 1, &sd_set, (fd_set *)0, (fd_set *)0, &tv);
+  switch (ret) {
+  case -1: // Error
+    return -1;
+  case 0: // We hit the timeout
+    return 0;
+  default:
+    if (!(FD_ISSET(s->sd, &sd_set))) {
+      /* We received something, but it's not on "sd". Since sd is the only
+       * descriptor in the set... */
+      OpalPrint("%s: RecvPacket: God, is that You trying to reach me?\n",
+                PROGNAME);
+      return -1;
+    }
+  }
+
+  // Clear the data array (in case we receive an incomplete packet)
+  memset(data, 0, len);
+
+  // Perform the reception
+  return recvfrom(s->sd, data, len, 0, (struct sockaddr *)&client_ad,
+                  &client_ad_size);
+}

clients/opal-rt/rtlab-asyncip/models/send_receive/src/utils.c

@@ -0,0 +1,36 @@
+/* Configure scheduler.
+ *
+ * Author: Steffen Vogel <post@steffenvogel.de>
+ * Author: Mathieu Dubé-Dallaire
+ * SPDX-FileCopyrightText: 2003 OPAL-RT Technologies inc
+ * SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <errno.h>
+#include <sched.h>
+
+/* Define RTLAB before including OpalPrint.h for messages to be sent
+ * to the OpalDisplay. Otherwise stdout will be used. */
+#define RTLAB
+#include "OpalPrint.h"
+
+#include "config.h"
+#include "utils.h"
+
+int AssignProcToCpu0(void) {
+  int ret;
+  cpu_set_t bindSet;
+
+  CPU_ZERO(&bindSet);
+  CPU_SET(0, &bindSet);
+
+  // Changing process cpu affinity
+  ret = sched_setaffinity(0, sizeof(cpu_set_t), &bindSet);
+  if (ret) {
+    OpalPrint("Unable to bind the process to CPU 0: %d\n", errno);
+    return EINVAL;
+  }
+
+  return 0;
+}

clients/opal-rt/rtlab-asyncip/villas_udp.llp

@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen
+University
+SPDX-License-Identifier: Apache-2.0
+-->
+<Project>
+    <General>
+        <att_name>villas_udp</att_name>
+        <att_description>This is a project!</att_description>
+        <att_ip_address>10.208.16.93:25251</att_ip_address>
+        <att_hashcode>1D336193-6957-4E55-B7F9-1E9E09E9BE58</att_hashcode>
+        <att_autosave>ON</att_autosave>
+        <att_project_locked>0</att_project_locked>
+        <att_filename>C:\Git\external\villas\node\clients\opal\villas_udp.llp</att_filename>
+    </General>
+    <Optionals>
+        <att_donotask_loadcfg_at_prjopen>0</att_donotask_loadcfg_at_prjopen>
+        <att_matlab_compile_outprocess>OFF</att_matlab_compile_outprocess>
+        <att_donotremind_labviewdeprecated>FALSE</att_donotremind_labviewdeprecated>
+    </Optionals>
+    <Models>
+        <Model>
+            <Path>
+                <Relative>models/send_receive/send_receive.mdl</Relative>
+                <Absolute>
+                    C:/Git/external/villas/node/clients/opal/models/send_receive/send_receive.mdl</Absolute>
+                <UNC>C:/Git/external/villas/node/clients/opal/models/send_receive/send_receive.mdl</UNC>
+            </Path>
+        </Model>
+    </Models>
+</Project>

clients/opal/.gitignore

@@ -1 +0,0 @@
-*.log

clients/opal/models/send_receive/.gitignore

@@ -1,8 +0,0 @@
-*.o
-*.d
-AsyncIP
-Opcommon/
-report/
-*_sm_model/
-*_ss_model/
-*_sc_console.mdl

clients/opal/models/send_receive/Makefile.mk

@@ -1,69 +0,0 @@
-# Makefile.
-#
-# @author Steffen Vogel <post@steffenvogel.de>
-# @copyright 2014-2022, Institute for Automation of Complex Power Systems, EONERC
-# @license Apache 2.0
-###################################################################################
-
-TARGET = AsyncIP
-
-VPATH = src
-
-RTLAB_INTEL_COMPILER ?= 1
-
-# Compiler selection
-ifeq ($(RTLAB_INTEL_COMPILER),1)
-	CC = opicc
-	LD = opicpc
-else
-	CC = gcc
-	LD = g++
-
-	INTEL_LIBS = -limf -lirc
-	INTEL_OBJS = compat.o
-endif
-
-# Support for debugging symbols
-ifeq ($(DEBUG),1)
-	CC_DEBUG_OPTS = -g -D_DEBUG
-	LD_DEBUG_OPTS = -g
-else
-	CC_DEBUG_OPTS = -O
-	LD_DEBUG_OPTS =
-endif
-
-TARGET_LIB = -lpthread -lm -ldl -lutil -lrt $(INTEL_LIBS)
-
-LIBPATH  = -L.           $(OPAL_LIBPATH)
-INCLUDES = -I. -Iinclude $(OPAL_INCPATH)
-
-ifneq ($(RTLAB_ROOT),)
-	INCLUDES += -I$(RTLAB_ROOT)/common/include_target
-endif
-
-CC_OPTS  = -std=c99 -D_GNU_SOURCE -MMD
-LD_OPTS  = 
-OBJS     = main.o msg.o utils.o socket.o $(INTEL_OBJS)
-
-ifneq ($(PROTOCOL),)
-	CC_OPTS += -DPROTOCOL=$(PROTOCOL)
-endif
-
-ADDLIB   = -lOpalCore -lOpalUtils
-LIBS     = -lOpalAsyncApiCore $(ADDLIB) $(TARGET_LIB) $(OPAL_LIBS)
-
-CFLAGS   = -c $(CC_OPTS) $(CC_DEBUG_OPTS) $(INCLUDES)
-LDFLAGS  = $(LD_OPTS) $(LD_DEBUG_OPTS) $(LIBPATH)
-
-all: $(TARGET)
-
-install: $(TARGET)
-	install -m 0755 -D -t $(DESTDIR)$(PREFIX)/bin $(TARGET)
-
-clean:
-	rm -f $(OBJS) $(OBJS:%.o=%.d) $(TARGET)
-
-$(TARGET): $(OBJS)
-	$(LD) $(LDFLAGS) -o $@ $(OBJS) $(LIBS)
-
--include $(wildcard *.d)

clients/opal/models/send_receive/include/config.h

@@ -1,26 +0,0 @@
-/** Compile-time configuration.
- *
- * @file
- * @author Steffen Vogel <post@steffenvogel.de>
- * @copyright 2014-2022, Institute for Automation of Complex Power Systems, EONERC
- * @license Apache 2.0
- *********************************************************************************/
-
-#ifndef _CONFIG_H_
-#define _CONFIG_H_
-
-#define PROGNAME	"VILLASnode-OPAL-UDP"
-#define VERSION		"0.7"
-
-#define MAX_VALUES	64
-
-/* List of protocols */
-#define VILLAS		1
-#define GTNET_SKT	2
-
-/* Default protocol */
-#ifndef PROTOCOL
-  #define PROTOCOL VILLAS
-#endif /* PROTOCOL */
-
-#endif /* _CONFIG_H_ */

clients/opal/models/send_receive/include/msg_format.h

@@ -1,78 +0,0 @@
-/** Message format
- *
- * @file
- * @author Steffen Vogel <post@steffenvogel.de>
- * @copyright 2014-2022, Institute for Automation of Complex Power Systems, EONERC
- * @license Apache 2.0
- *********************************************************************************/
-
-#pragma once
-
-#include <stdint.h>
-
-/** The current version number for the message format */
-#define MSG_VERSION		2
-
-/** @todo Implement more message types */
-#define MSG_TYPE_DATA		0 /**< Message contains float values */
-#define MSG_TYPE_START		1 /**< Message marks the beginning of a new simulation case */
-#define MSG_TYPE_STOP		2 /**< Message marks the end of a simulation case */
-
-/** The total size in bytes of a message */
-#define MSG_LEN(values)		(sizeof(struct msg) + MSG_DATA_LEN(values))
-
-/** The length of \p values values in bytes. */
-#define MSG_DATA_LEN(values)	(sizeof(float) * (values))
-
-/** The offset to the first data value in a message. */
-#define MSG_DATA_OFFSET(msg)	((char *) (msg) + offsetof(struct msg, data))
-
-/** Initialize a message with default values */
-#define MSG_INIT(len, seq) (struct msg) {\
-	.version  = MSG_VERSION,	\
-	.type     = MSG_TYPE_DATA,	\
-	.length   = len,	 	\
-	.sequence = seq,		\
-	.id       = 0			\
-}
-
-/** The timestamp of a message in struct timespec format */
-#define MSG_TS(msg) (struct timespec) {	\
-	.tv_sec  = (msg)->ts.sec,	\
-	.tv_nsec = (msg)->ts.nsec	\
-}
-
-/** This message format is used by all clients
- *
- * @diafile msg_format.dia
- **/
-struct msg
-{
-#if BYTE_ORDER == BIG_ENDIAN
-	unsigned version: 4;	/**< Specifies the format of the remaining message (see MGS_VERSION) */
-	unsigned type	: 2;	/**< Data or control message (see MSG_TYPE_*) */
-	unsigned reserved1	: 2;	/**< Reserved bits */
-#elif BYTE_ORDER == LITTLE_ENDIAN
-	unsigned reserved1	: 2;	/**< Reserved bits */
-	unsigned type	: 2;	/**< Data or control message (see MSG_TYPE_*) */
-	unsigned version: 4;	/**< Specifies the format of the remaining message (see MGS_VERSION) */
-#else
-  #error Invalid byte-order
-#endif /* BYTEORDER */
-
-	uint8_t id;		/**< An id which identifies the source of this sample */
-	uint16_t length;	/**< The number of values in msg::data[]. */
-	uint32_t sequence;	/**< The sequence number is incremented by one for consecutive messages. */
-
-	/** A timestamp per message. */
-	struct {
-		uint32_t sec;	/**< Seconds since 1970-01-01 00:00:00 */
-		uint32_t nsec;	/**< Nanoseconds of the current second. */
-	} ts;
-
-	/** The message payload. */
-	union {
-		float    f;	/**< Floating point values. */
-		uint32_t i;	/**< Integer values. */
-	} data[];
-} __attribute__((packed));

clients/opal/models/send_receive/include/socket.h

@@ -1,34 +0,0 @@
-/** Helper functions for sockets.
- *
- * @file
- * @author Steffen Vogel <post@steffenvogel.de>
- * @copyright 2014-2022, Institute for Automation of Complex Power Systems, EONERC
- * @license Apache 2.0
- *********************************************************************************/
-
-#ifndef _SOCKET_H_
-#define _SOCKET_H_
-
-#include <netinet/in.h>
-
-#define RT
-#include "OpalGenAsyncParamCtrl.h"
-
-#define UDP_PROTOCOL	1
-#define TCP_PROTOCOL	2
-
-struct socket {
-	struct sockaddr_in send_ad;	/* Send address */
-	struct sockaddr_in recv_ad;	/* Receive address */
-	int sd;				/* socket descriptor */
-};
-
-int socket_init(struct socket *s, Opal_GenAsyncParam_Ctrl IconCtrlStruct);
-
-int socket_send(struct socket *s, char *data, int len);
-
-int socket_recv(struct socket *s, char *data, int len, double timeout);
-
-int socket_close(struct socket *s, Opal_GenAsyncParam_Ctrl IconCtrlStruct);
-
-#endif /* _SOCKET_H_ */

clients/opal/models/send_receive/include/utils.h

@@ -1,16 +0,0 @@
-/** Configure scheduler.
- *
- * @file
- * @author Steffen Vogel <post@steffenvogel.de>
- * @author Mathieu Dubé-Dallaire
- * @copyright 2003, OPAL-RT Technologies inc
- * @copyright 2014-2022, Institute for Automation of Complex Power Systems, EONERC
- * @license Apache 2.0
- *********************************************************************************/
-
-#ifndef _UTILS_H_
-#define _UTILS_H_
-
-int AssignProcToCpu0(void);
-
-#endif /* _UTILS_H_ */

clients/opal/models/send_receive/src/compat.c

@@ -1,36 +0,0 @@
-/** Compatibility code for GCC
- *
- * OPAL-RT's libSystem.a links against some Intel
- *
- * @file
- * @author Steffen Vogel <post@steffenvogel.de>
- * @copyright 2014-2022, Institute for Automation of Complex Power Systems, EONERC
- * @license Apache 2.0
- *********************************************************************************/
-
-#include <string.h>
-
-size_t __intel_sse2_strlen(const char *s)
-{
-	return strlen(s);
-}
-
-void * _intel_fast_memset(void *b, int c, size_t len)
-{
-	return memset(b, c, len);
-}
-
-void * _intel_fast_memcpy(void *restrict dst, const void *restrict src, size_t n)
-{
-	return memcpy(dst, src, n);
-}
-
-int _intel_fast_memcmp(const void *s1, const void *s2, size_t n)
-{
-	return memcmp(s1, s2, n);
-}
-
-void * _intel_fast_memmove(void *dest, const void *src, size_t num)
-{
-	return memmove(dest, src, num);
-}

clients/opal/models/send_receive/src/main.asv

@@ -1,336 +0,0 @@
-/** Main routine of AsyncIP.
- *
- * @file
- * @author Steffen Vogel <post@steffenvogel.de>
- * @copyright 2014-2022, Institute for Automation of Complex Power Systems, EONERC
- * @license Apache 2.0
- *********************************************************************************/
-
-/* Standard ANSI C headers needed for this program */
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdint.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <string.h>
-#include <unistd.h>
-#include <signal.h>
-#include <time.h>
-#include <pthread.h>
-
-/* Define RTLAB before including OpalPrint.h for messages to be sent
- * to the OpalDisplay. Otherwise stdout will be used. */
-#define RTLAB
-#include "OpalPrint.h"
-#include "AsyncApi.h"
-
-/* This is the message format */
-#include "config.h"
-#include "socket.h"
-#include "utils.h"
-
-#if PROTOCOL == VILLAS
-  #include "msg.h"
-  #include "msg_format.h"
-#endif
-
-/* This is just for initializing the shared memory access to communicate
- * with the RT-LAB model. It's easier to remember the arguments like this */
-#define	ASYNC_SHMEM_NAME	argv[1]
-#define ASYNC_SHMEM_SIZE	atoi(argv[2])
-#define PRINT_SHMEM_NAME	argv[3]
-
-/* Global Variables */
-struct socket skt;
-
-static void * SendToIPPort(void *arg)
-{
-	unsigned int ModelState, SendID = 1, Sequence = 0;
-	int nbSend = 0, ret, cnt, len;
-
-	/* Data from OPAL-RT model */
-	double mdldata[MAX_VALUES];
-	int mdldata_size;
-
-#if PROTOCOL == VILLAS
-	char buf[MSG_LEN(MAX_VALUES)];
-	struct msg *msg = (struct msg *) buf;
-#elif PROTOCOL == GTNET_SKT
-	char buf[MAX_VALUES * sizeof(float)];
-	float *msg = (float *) buf;
-#endif
-
-	OpalPrint("%s: SendToIPPort thread started\n", PROGNAME);
-
-	OpalGetNbAsyncSendIcon(&nbSend);
-	if (nbSend < 1) {
-		OpalPrint("%s: SendToIPPort: No transimission block for this controller. Stopping thread.\n", PROGNAME);
-		return NULL;
-	}
-	
-	do {
-		/* This call unblocks when the 'Data Ready' line of a send icon is asserted. */
-		ret = OpalWaitForAsyncSendRequest(&SendID);
-		if (ret != EOK) {
-			ModelState = OpalGetAsyncModelState();
-			if ((ModelState != STATE_RESET) && (ModelState != STATE_STOP)) {
-				OpalSetAsyncSendIconError(ret, SendID);
-				OpalPrint("%s: OpalWaitForAsyncSendRequest(), errno %d\n", PROGNAME, ret);
-			}
-
-			continue;
-		}
-
-		/* No errors encountered yet */
-		OpalSetAsyncSendIconError(0, SendID);
-
-		/* Get the size of the data being sent by the unblocking SendID */
-		OpalGetAsyncSendIconDataLength(&mdldata_size, SendID);
-		cnt = mdldata_size / sizeof(double);
-		if (cnt > MAX_VALUES) {
-			OpalPrint("%s: Number of signals for SendID=%d exceeds allowed maximum (%d)\n",
-				PROGNAME, SendID, MAX_VALUES);
-			return NULL;
-		}
-
-		/* Read data from the model */
-		OpalGetAsyncSendIconData(mdldata, mdldata_size, SendID);
-
-#if PROTOCOL == VILLAS
-		/* Get current time */
-		struct timespec now;
-		clock_gettime(CLOCK_REALTIME, &now);
-
-		msg->length = mdldata_size / sizeof(double);
-		msg->sequence = Sequence++;
-		msg->ts.sec = now.tv_sec;
-		msg->ts.nsec = now.tv_nsec;
-
-		for (int i = 0; i < msg->length; i++)
-			msg->data[i].f = (float) mdldata[i];
-
-		msg_hton(msg);
-		
-		len = MSG_LEN(msg->length);
-#elif PROTOCOL == GTNET_SKT
-        uint32_t *imsg = (uint32_t *) msg;
-		for (int i = 0; i < cnt; i++) {
-			msg[i] = (float) mdldata[i];
-            imsg[i] = htonl(imsg[i]);
-        }
-		
-		len = mdldata_size / sizeof(double) * sizeof(float);
-#else
-  #error Unknown protocol
-#endif
-
-		/* Perform the actual write to the ip port */
-		ret = socket_send(&skt, (char *) msg, len);
-		if (ret < 0)
-			OpalSetAsyncSendIconError(errno, SendID);
-		else
-			OpalSetAsyncSendIconError(0, SendID);
-
-		/* This next call allows the execution of the "asynchronous" process
-		 * to actually be synchronous with the model. To achieve this, you
-		 * should set the "Sending Mode" in the Async_Send block to
-		 * NEED_REPLY_BEFORE_NEXT_SEND or NEED_REPLY_NOW. This will force
-		 * the model to wait for this process to call this
-		* OpalAsyncSendRequestDone function before continuing. */
-		OpalAsyncSendRequestDone(SendID);
-
-		/* Before continuing, we make sure that the real-time model
-		 * has not been stopped. If it has, we quit. */
-		ModelState = OpalGetAsyncModelState();
-	} while ((ModelState != STATE_RESET) && (ModelState != STATE_STOP));
-
-	OpalPrint("%s: SendToIPPort: Finished\n", PROGNAME);
-
-	return NULL;
-}
-
-static void * RecvFromIPPort(void *arg)
-{
-	unsigned int ModelState, RecvID = 1;
-	int nbRecv = 0, ret, cnt;
-
-	/* Data from OPAL-RT model */
-	double mdldata[MAX_VALUES];
-	int mdldata_size;
-
-#if PROTOCOL == VILLAS
-	char buf[MSG_LEN(MAX_VALUES)];
-	struct msg *msg = (struct msg *) buf;
-#elif PROTOCOL == GTNET_SKT
-	char buf[MAX_VALUES * sizeof(float)];
-	float *msg = (float *) buf;
-#else
-  #error Unknown protocol
-#endif
-
-	OpalPrint("%s: RecvFromIPPort thread started\n", PROGNAME);
-
-	OpalGetNbAsyncRecvIcon(&nbRecv);
-	if (nbRecv < 1) {
-		OpalPrint("%s: RecvFromIPPort: No reception block for this controller. Stopping thread.\n", PROGNAME);
-		return NULL;
-	}
-
-	do {
-		/* Receive message */
-		ret = socket_recv(&skt, (char *) msg, sizeof(buf), 1.0);
-		if (ret < 1) {
-			ModelState = OpalGetAsyncModelState();
-			if ((ModelState != STATE_RESET) && (ModelState != STATE_STOP)) {
-				if (ret ==  0) /* timeout, so we continue silently */
-					OpalPrint("%s: Timeout while waiting for data\n", PROGNAME, errno);
-				if (ret == -1) /* a more serious error, so we print it */
-					OpalPrint("%s: Error %d while waiting for data\n", PROGNAME, errno);
-					
-				continue;
-			}
-			break;
-		}
-		
-		/* Get the number of signals to send back to the model */
-		OpalGetAsyncRecvIconDataLength(&mdldata_size, RecvID);
-		cnt = mdldata_size / sizeof(double);
-		if (cnt > MAX_VALUES) {
-			OpalPrint("%s: Number of signals for RecvID=%d (%d) exceeds allowed maximum (%d)\n",
-				PROGNAME, RecvID, cnt, MAX_VALUES);
-			return NULL;
-		}
-
-#if PROTOCOL == VILLAS
-        msg_ntoh(msg);
-        
-		ret = msg_verify(msg);
-		if (ret) {
-			OpalPrint("%s: Skipping invalid packet\n", PROGNAME);
-			continue;
-		}
-			
-		if (cnt > msg->length) {
-			OpalPrint("%s: Number of signals for RecvID=%d (%d) exceeds what was received (%d)\n",
-				PROGNAME, RecvID, cnt, msg->length);
-		}
-		
-		for (int i = 0; i < msg->length; i++) {
-			mdldata[i] = (double) msg->data[i].f;
-            printf("Data rcvd from VILLAS %f\n", mdldata[i]);
-        }
-
-		/* Update OPAL model */
-		OpalSetAsyncRecvIconStatus(msg->sequence, RecvID);	/* Set the Status to the message ID */
-#elif PROTOCOL == GTNET_SKT
-        uint32_t *imsg = (uint32_t *) msg;
-        for (int i = 0; i < cnt; i++)
-            imsg[i] = ntohl(imsg[i]);
-        
-        printf("Protocol GTNET_SKT\n");
-		for (int i = 0; i < cnt; i++) {
-			mdldata[i] = (double) msg[i];
-            printf("Data rcvd from GTNET_SKT %f\n", mdldata[i]);
-        }
-#else
-  #error Unknown protocol
-#endif
-
-		OpalSetAsyncRecvIconError(0, RecvID);			/* Set the Error to 0 */
-
-		OpalSetAsyncRecvIconData(mdldata, mdldata_size, RecvID);
-
-		/* Before continuing, we make sure that the real-time model
-		 * has not been stopped. If it has, we quit. */
-		ModelState = OpalGetAsyncModelState();
-	} while ((ModelState != STATE_RESET) && (ModelState != STATE_STOP));
-
-	OpalPrint("%s: RecvFromIPPort: Finished\n", PROGNAME);
-
-	return NULL;
-}
-
-int main(int argc, char *argv[])
-{
-    /* @todo remove after testing */
-    printf("*****************Starting the Application****************\n");
-    FILE * testfile = fopen ("testfile.txt","w");
-    if (testfile!=NULL)
-    {
-        fputs ("test file to check if main runs", testfile);
-        fclose (testfile);
-    }
-    
-	int ret;
-
-	Opal_GenAsyncParam_Ctrl IconCtrlStruct;
-
-	pthread_t tid_send, tid_recv;
-
-	OpalPrint("%s: This is %s client version %s\n", PROGNAME, PROGNAME, VERSION);
-
-	/* Check for the proper arguments to the program */
-	if (argc < 4) {
-		printf("Invalid Arguments: 1-AsyncShmemName 2-AsyncShmemSize 3-PrintShmemName\n");
-		exit(0);
-	}
-
-	/* Enable the OpalPrint function. This prints to the OpalDisplay. */
-	ret = OpalSystemCtrl_Register(PRINT_SHMEM_NAME);
-	if (ret != EOK) {
-		printf("%s: ERROR: OpalPrint() access not available\n", PROGNAME);
-		exit(EXIT_FAILURE);
-	}
-
-	/* Open Share Memory created by the model. */
-	ret = OpalOpenAsyncMem(ASYNC_SHMEM_SIZE, ASYNC_SHMEM_NAME);
-	if (ret != EOK) {
-		OpalPrint("%s: ERROR: Model shared memory not available\n", PROGNAME);
-		exit(EXIT_FAILURE);
-	}
-
-	AssignProcToCpu0();
-
-	/* Get IP Controler Parameters (ie: ip address, port number...) and
-	 * initialize the device on the QNX node. */
-	memset(&IconCtrlStruct, 0, sizeof(IconCtrlStruct));
-	
-	ret = OpalGetAsyncCtrlParameters(&IconCtrlStruct, sizeof(IconCtrlStruct));
-	if (ret != EOK) {
-		OpalPrint("%s: ERROR: Could not get controller parameters (%d).\n", PROGNAME, ret);
-		exit(EXIT_FAILURE);
-	}
-
-	/* Initialize socket */
-	ret = socket_init(&skt, IconCtrlStruct);
-	if (ret != EOK) {
-		OpalPrint("%s: ERROR: Initialization failed.\n", PROGNAME);
-		exit(EXIT_FAILURE);
-	}
-
-	/* Start send/receive threads */
-	ret = pthread_create(&tid_send, NULL, SendToIPPort, NULL);
-	if (ret == -1)
-		OpalPrint("%s: ERROR: Could not create thread (SendToIPPort), errno %d\n", PROGNAME, errno);
-	
-	ret = pthread_create(&tid_recv, NULL, RecvFromIPPort, NULL);
-	if (ret == -1)
-		OpalPrint("%s: ERROR: Could not create thread (RecvFromIPPort), errno %d\n", PROGNAME, errno);
-
-	/* Wait for both threads to finish */
-	ret = pthread_join(tid_send, NULL);
-	if (ret != 0)
-		OpalPrint("%s: ERROR: pthread_join (SendToIPPort), errno %d\n", PROGNAME, ret);
-	
-	ret = pthread_join(tid_recv, NULL);
-	if (ret != 0)
-		OpalPrint("%s: ERROR: pthread_join (RecvFromIPPort), errno %d\n", PROGNAME, ret);
-
-	/* Close the ip port and shared memories */
-	socket_close(&skt, IconCtrlStruct);
-	
-	OpalCloseAsyncMem (ASYNC_SHMEM_SIZE, ASYNC_SHMEM_NAME);
-	OpalSystemCtrl_UnRegister(PRINT_SHMEM_NAME);
-
-	return 0;
-}

clients/opal/models/send_receive/src/main.c

@@ -1,349 +0,0 @@
-/** Main routine of AsyncIP.
- *
- * @file
- * @author Steffen Vogel <post@steffenvogel.de>
- * @copyright 2014-2022, Institute for Automation of Complex Power Systems, EONERC
- * @license Apache 2.0
- *********************************************************************************/
-
-/* Standard ANSI C headers needed for this program */
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdint.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <string.h>
-#include <unistd.h>
-#include <signal.h>
-#include <time.h>
-#include <pthread.h>
-
-/* Define RTLAB before including OpalPrint.h for messages to be sent
- * to the OpalDisplay. Otherwise stdout will be used. */
-#define RTLAB
-#include "OpalPrint.h"
-#include "AsyncApi.h"
-
-/* This is the message format */
-#include "config.h"
-#include "socket.h"
-#include "utils.h"
-
-#if PROTOCOL == VILLAS
-  #include "msg.h"
-  #include "msg_format.h"
-#endif
-
-/* This is just for initializing the shared memory access to communicate
- * with the RT-LAB model. It's easier to remember the arguments like this */
-#define	ASYNC_SHMEM_NAME	argv[1]
-#define ASYNC_SHMEM_SIZE	atoi(argv[2])
-#define PRINT_SHMEM_NAME	argv[3]
-
-/* Global Variables */
-struct socket skt;
-
-static void * SendToIPPort(void *arg)
-{
-	unsigned int ModelState, SendID, Sequence = 0;
-	int nbSend = 0, ret, cnt, len;
-
-	/* Data from OPAL-RT model */
-	double mdldata[MAX_VALUES];
-	int mdldata_size;
-
-#if PROTOCOL == VILLAS
-	char buf[MSG_LEN(MAX_VALUES)];
-	struct msg *msg = (struct msg *) buf;
-#elif PROTOCOL == GTNET_SKT
-	char buf[MAX_VALUES * sizeof(float)];
-	float *msg = (float *) buf;
-#endif
-
-	OpalPrint("%s: SendToIPPort thread started\n", PROGNAME);
-
-	OpalGetNbAsyncSendIcon(&nbSend);
-	if (nbSend < 1) {
-		OpalPrint("%s: SendToIPPort: No transimission block for this controller. Stopping thread.\n", PROGNAME);
-		return NULL;
-	}
-
-	do {
-		/* This call unblocks when the 'Data Ready' line of a send icon is asserted. */
-		ret = OpalWaitForAsyncSendRequest(&SendID);
-		if (ret != EOK) {
-			ModelState = OpalGetAsyncModelState();
-			if ((ModelState != STATE_RESET) && (ModelState != STATE_STOP)) {
-				OpalSetAsyncSendIconError(ret, SendID);
-				OpalPrint("%s: OpalWaitForAsyncSendRequest(), errno %d\n", PROGNAME, ret);
-			}
-
-			continue;
-		}
-
-		/* No errors encountered yet */
-		OpalSetAsyncSendIconError(0, SendID);
-
-		/* Get the size of the data being sent by the unblocking SendID */
-		OpalGetAsyncSendIconDataLength(&mdldata_size, SendID);
-		cnt = mdldata_size / sizeof(double);
-		if (cnt > MAX_VALUES) {
-			OpalPrint("%s: Number of signals for SendID=%d exceeds allowed maximum (%d). Limiting...\n",
-				PROGNAME, SendID, MAX_VALUES);
-			cnt = MAX_VALUES;
-		}
-
-		/* Read data from the model */
-		OpalGetAsyncSendIconData(mdldata, mdldata_size, SendID);
-
-#if PROTOCOL == VILLAS
-		/* Get current time */
-		struct timespec now;
-		clock_gettime(CLOCK_REALTIME, &now);
-
-		msg->version = MSG_VERSION;
-		msg->type = MSG_TYPE_DATA;
-		msg->reserved1 = 0;
-		msg->id = SendID;
-		msg->length = cnt;
-		msg->sequence = Sequence++;
-		msg->ts.sec = now.tv_sec;
-		msg->ts.nsec = now.tv_nsec;
-
-		for (int i = 0; i < msg->length; i++)
-			msg->data[i].f = (float) mdldata[i];
-
-		len = MSG_LEN(msg->length);
-
-		msg_hton(msg);
-#elif PROTOCOL == GTNET_SKT
-		uint32_t *imsg = (uint32_t *) msg;
-		for (int i = 0; i < cnt; i++) {
-			msg[i] = (float) mdldata[i];
-			imsg[i] = htonl(imsg[i]);
-		}
-
-		len = cnt * sizeof(float);
-#else
-  #error Unknown protocol
-#endif
-
-		/* Perform the actual write to the ip port */
-		ret = socket_send(&skt, (char *) msg, len);
-		if (ret < 0)
-			OpalSetAsyncSendIconError(errno, SendID);
-		else
-			OpalSetAsyncSendIconError(0, SendID);
-
-		/* This next call allows the execution of the "asynchronous" process
-		 * to actually be synchronous with the model. To achieve this, you
-		 * should set the "Sending Mode" in the Async_Send block to
-		 * NEED_REPLY_BEFORE_NEXT_SEND or NEED_REPLY_NOW. This will force
-		 * the model to wait for this process to call this
-		* OpalAsyncSendRequestDone function before continuing. */
-		OpalAsyncSendRequestDone(SendID);
-
-		/* Before continuing, we make sure that the real-time model
-		 * has not been stopped. If it has, we quit. */
-		ModelState = OpalGetAsyncModelState();
-	} while ((ModelState != STATE_RESET) && (ModelState != STATE_STOP));
-
-	OpalPrint("%s: SendToIPPort: Finished\n", PROGNAME);
-
-	return NULL;
-}
-
-static void * RecvFromIPPort(void *arg)
-{
-	unsigned int ModelState, RecvID;
-	int nbRecv = 0, ret, cnt;
-
-	/* Data from OPAL-RT model */
-	double mdldata[MAX_VALUES];
-	int mdldata_size;
-
-#if PROTOCOL == VILLAS
-	char buf[MSG_LEN(MAX_VALUES)];
-	struct msg *msg = (struct msg *) buf;
-#elif PROTOCOL == GTNET_SKT
-	char buf[MAX_VALUES * sizeof(float)];
-	float *msg = (float *) buf;
-#else
-  #error Unknown protocol
-#endif
-
-	OpalPrint("%s: RecvFromIPPort thread started\n", PROGNAME);
-
-	OpalGetNbAsyncRecvIcon(&nbRecv);
-	if (nbRecv < 1) {
-		OpalPrint("%s: RecvFromIPPort: No reception block for this controller. Stopping thread.\n", PROGNAME);
-		return NULL;
-	}
-
-	/* Get list of RecvIds */
-	unsigned int RecvIDs[nbRecv];
-	ret = OpalGetAsyncRecvIDList(RecvIDs, sizeof(RecvIDs));
-	if (ret != EOK) {
-		OpalPrint("%s: Failed to get list of RecvIDs\n", PROGNAME);
-		return NULL;
-	}
-
-	do {
-		/* Receive message */
-		ret  = socket_recv(&skt, (char *) msg, sizeof(buf), 1.0);
-		if (ret < 1) {
-			ModelState = OpalGetAsyncModelState();
-			if ((ModelState != STATE_RESET) && (ModelState != STATE_STOP)) {
-				if (ret ==  0) /* timeout, so we continue silently */
-					OpalPrint("%s: Timeout while waiting for data\n", PROGNAME, errno);
-				if (ret == -1) /* a more serious error, so we print it */
-					OpalPrint("%s: Error %d while waiting for data\n", PROGNAME, errno);
-
-				continue;
-			}
-			break;
-		}
-
-#if PROTOCOL == VILLAS
-		RecvID = msg->id;
-#elif PROTOCOL == GTNET_SKT
-		RecvID = 1;
-#else
-  #error Unknown protocol
-#endif
-		/* Check if this RecvID exists */
-		for (int i = 0; i < nbRecv; i++) {
-			if (RecvIDs[i] == RecvID)
-				goto found;
-		}
-
-		OpalPrint("%s: Received message with non-existent RecvID=%d. Changing to RecvID=%d...\n", PROGNAME, RecvID, RecvIDs[0]);
-		RecvID = RecvIDs[0];
-
-found:		/* Get the number of signals to send back to the model */
-		OpalGetAsyncRecvIconDataLength(&mdldata_size, RecvID);
-		cnt = mdldata_size / sizeof(double);
-		if (cnt > MAX_VALUES) {
-			OpalPrint("%s: Number of signals for RecvID=%d (%d) exceeds allowed maximum (%d)\n",
-				PROGNAME, RecvID, cnt, MAX_VALUES);
-			return NULL;
-		}
-
-#if PROTOCOL == VILLAS
-		msg_ntoh(msg);
-
-		ret = msg_verify(msg);
-		if (ret) {
-			OpalPrint("%s: Skipping invalid packet\n", PROGNAME);
-			continue;
-		}
-
-		if (cnt > msg->length) {
-			OpalPrint("%s: Number of signals for RecvID=%d (%d) exceeds what was received (%d)\n",
-				PROGNAME, RecvID, cnt, msg->length);
-		}
-
-		for (int i = 0; i < msg->length; i++)
-			mdldata[i] = (double) msg->data[i].f;
-
-		/* Update OPAL model */
-		OpalSetAsyncRecvIconStatus(msg->sequence, RecvID);	/* Set the Status to the message ID */
-#elif PROTOCOL == GTNET_SKT
-		uint32_t *imsg = (uint32_t *) msg;
-		for (int i = 0; i < cnt; i++) {
-			imsg[i] = ntohl(imsg[i]);
-			mdldata[i] = (double) msg[i];
-		}
-#else
-  #error Unknown protocol
-#endif
-
-		OpalSetAsyncRecvIconError(0, RecvID);			/* Set the Error to 0 */
-
-		OpalSetAsyncRecvIconData(mdldata, mdldata_size, RecvID);
-
-		/* Before continuing, we make sure that the real-time model
-		 * has not been stopped. If it has, we quit. */
-		ModelState = OpalGetAsyncModelState();
-	} while ((ModelState != STATE_RESET) && (ModelState != STATE_STOP));
-
-	OpalPrint("%s: RecvFromIPPort: Finished\n", PROGNAME);
-
-	return NULL;
-}
-
-int main(int argc, char *argv[])
-{
-	int ret;
-
-	Opal_GenAsyncParam_Ctrl IconCtrlStruct;
-
-	pthread_t tid_send, tid_recv;
-
-	OpalPrint("%s: This is %s client version %s\n", PROGNAME, PROGNAME, VERSION);
-
-	/* Check for the proper arguments to the program */
-	if (argc < 4) {
-		printf("Invalid Arguments: 1-AsyncShmemName 2-AsyncShmemSize 3-PrintShmemName\n");
-		exit(0);
-	}
-
-	/* Enable the OpalPrint function. This prints to the OpalDisplay. */
-	ret = OpalSystemCtrl_Register(PRINT_SHMEM_NAME);
-	if (ret != EOK) {
-		printf("%s: ERROR: OpalPrint() access not available\n", PROGNAME);
-		exit(EXIT_FAILURE);
-	}
-
-	/* Open Share Memory created by the model. */
-	ret = OpalOpenAsyncMem(ASYNC_SHMEM_SIZE, ASYNC_SHMEM_NAME);
-	if (ret != EOK) {
-		OpalPrint("%s: ERROR: Model shared memory not available\n", PROGNAME);
-		exit(EXIT_FAILURE);
-	}
-
-	AssignProcToCpu0();
-
-	/* Get IP Controler Parameters (ie: ip address, port number...) and
-	 * initialize the device on the QNX node. */
-	memset(&IconCtrlStruct, 0, sizeof(IconCtrlStruct));
-
-	ret = OpalGetAsyncCtrlParameters(&IconCtrlStruct, sizeof(IconCtrlStruct));
-	if (ret != EOK) {
-		OpalPrint("%s: ERROR: Could not get controller parameters (%d).\n", PROGNAME, ret);
-		exit(EXIT_FAILURE);
-	}
-
-	/* Initialize socket */
-	ret = socket_init(&skt, IconCtrlStruct);
-	if (ret != EOK) {
-		OpalPrint("%s: ERROR: Failed to create socket.\n", PROGNAME);
-		exit(EXIT_FAILURE);
-	}
-
-	/* Start send/receive threads */
-	ret = pthread_create(&tid_send, NULL, SendToIPPort, NULL);
-	if (ret < 0)
-		OpalPrint("%s: ERROR: Could not create thread (SendToIPPort), errno %d\n", PROGNAME, errno);
-
-	ret = pthread_create(&tid_recv, NULL, RecvFromIPPort, NULL);
-	if (ret < 0)
-		OpalPrint("%s: ERROR: Could not create thread (RecvFromIPPort), errno %d\n", PROGNAME, errno);
-
-	/* Wait for both threads to finish */
-	ret = pthread_join(tid_send, NULL);
-	if (ret)
-		OpalPrint("%s: ERROR: pthread_join (SendToIPPort), errno %d\n", PROGNAME, ret);
-
-	ret = pthread_join(tid_recv, NULL);
-	if (ret)
-		OpalPrint("%s: ERROR: pthread_join (RecvFromIPPort), errno %d\n", PROGNAME, ret);
-
-	/* Close the ip port and shared memories */
-	socket_close(&skt, IconCtrlStruct);
-
-	OpalCloseAsyncMem (ASYNC_SHMEM_SIZE, ASYNC_SHMEM_NAME);
-	OpalSystemCtrl_UnRegister(PRINT_SHMEM_NAME);
-
-	return 0;
-}

clients/opal/models/send_receive/src/msg.c

@@ -1,55 +0,0 @@
-/** Message related functions.
- *
- * @author Steffen Vogel <post@steffenvogel.de>
- * @copyright 2014-2022, Institute for Automation of Complex Power Systems, EONERC
- * @license Apache 2.0
- *********************************************************************************/
-
-#include <arpa/inet.h>
-
-#include "msg.h"
-#include "msg_format.h"
-
-void msg_ntoh(struct msg *m)
-{
-	msg_hdr_ntoh(m);
-
-	for (int i = 0; i < m->length; i++)
-		m->data[i].i = ntohl(m->data[i].i);
-}
-
-void msg_hton(struct msg *m)
-{
-	for (int i = 0; i < m->length; i++)
-		m->data[i].i = htonl(m->data[i].i);
-
-	msg_hdr_hton(m);
-}
-
-void msg_hdr_hton(struct msg *m)
-{
-	m->length   = htons(m->length);
-	m->sequence = htonl(m->sequence);
-	m->ts.sec   = htonl(m->ts.sec);
-	m->ts.nsec  = htonl(m->ts.nsec);
-}
-
-void msg_hdr_ntoh(struct msg *m)
-{
-	m->length   = ntohs(m->length);
-	m->sequence = ntohl(m->sequence);
-	m->ts.sec   = ntohl(m->ts.sec);
-	m->ts.nsec  = ntohl(m->ts.nsec);
-}
-
-int msg_verify(struct msg *m)
-{
-	if      (m->version != MSG_VERSION)
-		return -1;
-	else if (m->type    != MSG_TYPE_DATA)
-		return -2;
-	else if (m->reserved1 != 0)
-		return -3;
-	else
-		return 0;
-}

clients/opal/models/send_receive/src/socket.c

@@ -1,169 +0,0 @@
-/** Helper functions for sockets.
- *
- * @author Steffen Vogel <post@steffenvogel.de>
- * @copyright 2014-2022, Institute for Automation of Complex Power Systems, EONERC
- * @license Apache 2.0
- *********************************************************************************/
-
-#include <errno.h>
-#include <unistd.h>
-#include <stdlib.h>
-#include <fcntl.h>
-#include <string.h>
-#include <sys/time.h>
-#include <sys/socket.h>
-#include <arpa/inet.h>
-
-/* Define RTLAB before including OpalPrint.h for messages to be sent
- * to the OpalDisplay. Otherwise stdout will be used. */
-#define RTLAB
-#include "OpalPrint.h"
-#include "AsyncApi.h"
-
-#include "config.h"
-#include "socket.h"
-
-int socket_init(struct socket *s, Opal_GenAsyncParam_Ctrl IconCtrlStruct)
-{
-	struct ip_mreq mreq; /* Multicast group structure */
-	unsigned char TTL = 1, LOOP = 0;
-	int rc, proto, ret;
-
-	proto = (int) IconCtrlStruct.FloatParam[0];
-	if (proto != UDP_PROTOCOL) {
-		OpalPrint("%s: This version of %s only supports UDP\n", PROGNAME, PROGNAME);
-		return EIO;
-	}
-
-	OpalPrint("%s: Version        : %s\n", PROGNAME, VERSION);
-	OpalPrint("%s: Remote Address : %s\n", PROGNAME, IconCtrlStruct.StringParam[0]);
-	OpalPrint("%s: Remote Port    : %d\n", PROGNAME, (int) IconCtrlStruct.FloatParam[1]);
-
-	/* Initialize the socket */
-	s->sd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
-	if (s->sd < 0) {
-		OpalPrint("%s: ERROR: Could not open socket\n", PROGNAME);
-		return EIO;
-	}
-
-	/* Set the structure for the remote port and address */
-	memset(&s->send_ad, 0, sizeof(s->send_ad));
-	s->send_ad.sin_family = AF_INET;
-	s->send_ad.sin_addr.s_addr = inet_addr(IconCtrlStruct.StringParam[0]);
-	s->send_ad.sin_port = htons((u_short) IconCtrlStruct.FloatParam[1]);
-
-	/* Set the structure for the local port and address */
-	memset(&s->recv_ad, 0, sizeof(s->recv_ad));
-	s->recv_ad.sin_family = AF_INET;
-	s->recv_ad.sin_addr.s_addr = INADDR_ANY;
-	s->recv_ad.sin_port = htons((u_short) IconCtrlStruct.FloatParam[2]);
-
-	/* Bind local port and address to socket. */
-	ret = bind(s->sd, (struct sockaddr *) &s->recv_ad, sizeof(struct sockaddr_in));
-	if (ret < 0) {
-		OpalPrint("%s: ERROR: Could not bind local port to socket\n", PROGNAME);
-		return EIO;
-	}
-	else
-		OpalPrint("%s: Local Port     : %d\n", PROGNAME, (int) IconCtrlStruct.FloatParam[2]);
-
-	/* If sending to a multicast address */
-	if ((inet_addr(IconCtrlStruct.StringParam[0]) & inet_addr("240.0.0.0")) == inet_addr("224.0.0.0")) {
-		ret = setsockopt(s->sd, IPPROTO_IP, IP_MULTICAST_TTL, (char *) &TTL, sizeof(TTL));
-		if (ret == -1) {
-			OpalPrint("%s: ERROR: Could not set TTL for multicast send (%d)\n", PROGNAME, errno);
-			return EIO;
-		}
-
-		ret = setsockopt(s->sd, IPPROTO_IP, IP_MULTICAST_LOOP, (char *)&LOOP, sizeof(LOOP));
-		if (ret == -1) {
-			OpalPrint("%s: ERROR: Could not set loopback for multicast send (%d)\n", PROGNAME, errno);
-			return EIO;
-		}
-
-		OpalPrint("%s: Configured socket for sending to multicast address\n", PROGNAME);
-	}
-
-	/* If receiving from a multicast group, register for it. */
-	if (inet_addr(IconCtrlStruct.StringParam[1]) > 0) {
-		if ((inet_addr(IconCtrlStruct.StringParam[1]) & inet_addr("240.0.0.0")) == inet_addr("224.0.0.0")) {
-			mreq.imr_multiaddr.s_addr = inet_addr(IconCtrlStruct.StringParam[1]);
-			mreq.imr_interface.s_addr = INADDR_ANY;
-
-			/* Have the multicast socket join the multicast group */
-			ret = setsockopt(s->sd, IPPROTO_IP, IP_ADD_MEMBERSHIP, (char *) &mreq, sizeof(mreq));
-			if (ret == -1) {
-				OpalPrint("%s: ERROR: Could not join multicast group (%d)\n", PROGNAME, errno);
-				return EIO;
-			}
-
-			OpalPrint("%s: Added process to multicast group (%s)\n", PROGNAME, IconCtrlStruct.StringParam[1]);
-		}
-		else
-			OpalPrint("%s: WARNING: IP address for multicast group is not in multicast range. Ignored\n", PROGNAME);
-	}
-
-	return EOK;
-}
-
-int socket_close(struct socket *s, Opal_GenAsyncParam_Ctrl IconCtrlStruct)
-{
-	int ret;
-
-	ret = shutdown(s->sd, SHUT_RDWR);
-	if (ret)
-		return ret;
-
-	ret = close(s->sd);
-	if (ret)
-		return ret;
-
-	return 0;
-}
-
-int socket_send(struct socket *s, char *data, int len)
-{
-	return sendto(s->sd, data, len, 0, (struct sockaddr *) &s->send_ad, sizeof(s->send_ad));
-}
-
-int socket_recv(struct socket *s, char *data, int len, double timeout)
-{
-	int ret;
-	struct sockaddr_in client_ad;
-	struct timeval tv;
-	socklen_t client_ad_size = sizeof(client_ad);
-	fd_set sd_set;
-
-	/* Set the descriptor set for the select() call */
-	FD_ZERO(&sd_set);
-	FD_SET(s->sd, &sd_set);
-
-	/* Set the tv structure to the correct timeout value */
-	tv.tv_sec = (int) timeout;
-	tv.tv_usec = (int) ((timeout - tv.tv_sec) * 1000000);
-
-	/* Wait for a packet. We use select() to have a timeout. This is
-	 * necessary when reseting the model so we don't wait indefinitely
-	 * and prevent the process from exiting and freeing the port for
-	 * a future instance (model load). */
-	ret = select(s->sd + 1, &sd_set, (fd_set *) 0, (fd_set *) 0, &tv);
-	switch (ret) {
-		case -1: /* Error */
-			return -1;
-		case  0: /* We hit the timeout */
-			return 0;
-		default:
-			if (!(FD_ISSET(s->sd, &sd_set))) {
-				/* We received something, but it's not on "sd". Since sd is the only
-				 * descriptor in the set... */
-				OpalPrint("%s: RecvPacket: God, is that You trying to reach me?\n", PROGNAME);
-				return -1;
-			}
-	}
-
-	/* Clear the data array (in case we receive an incomplete packet) */
-	memset(data, 0, len);
-
-	/* Perform the reception */
-	return recvfrom(s->sd, data, len, 0, (struct sockaddr *) &client_ad, &client_ad_size);
-}

clients/opal/models/send_receive/src/utils.c

@@ -1,37 +0,0 @@
-/** Configure scheduler.
- *
- * @author Steffen Vogel <post@steffenvogel.de>
- * @author Mathieu Dubé-Dallaire
- * @copyright 2003, OPAL-RT Technologies inc
- * @copyright 2014-2022, Institute for Automation of Complex Power Systems, EONERC
- * @license Apache 2.0
- *********************************************************************************/
-
-#include <errno.h>
-#include <sched.h>
-
-/* Define RTLAB before including OpalPrint.h for messages to be sent
- * to the OpalDisplay. Otherwise stdout will be used. */
-#define RTLAB
-#include "OpalPrint.h"
-
-#include "config.h"
-#include "utils.h"
-
-int AssignProcToCpu0(void)
-{
-	int ret;
-	cpu_set_t bindSet;
-	
-	CPU_ZERO(&bindSet);
-	CPU_SET(0, &bindSet);
-
-	/* Changing process cpu affinity */
-	ret = sched_setaffinity(0, sizeof(cpu_set_t), &bindSet);
-	if (ret) {
-		OpalPrint("Unable to bind the process to CPU 0: %d\n", errno);
-		return EINVAL;
-	}
-
-	return 0;
-}

clients/opal/villas_udp.llp

@@ -1,20 +0,0 @@
-<?xml version="1.0" ?>
-<Project>
-    <General>
-        <att_name>villas_udp</att_name>
-        <att_description>This is a project!</att_description>
-        <att_ip_address>134.130.169.120:25251</att_ip_address>
-        <att_hashcode>7CA55C76-B20E-414C-93F2-A1858B0095F3</att_hashcode>
-        <att_autosave>ON</att_autosave>
-        <att_filename>C:\Users\svo\workspace\villas\node\clients\opal\villas_udp.llp</att_filename>
-    </General>
-    <Models>
-        <Model>
-            <Path>
-                <Relative>models/send_receive/send_receive.mdl</Relative>
-                <Absolute>C:/Users/svo/workspace/villas/node/clients/opal/models/send_receive/send_receive.mdl</Absolute>
-                <UNC>C:/Users/svo/workspace/villas/node/clients/opal/models/send_receive/send_receive.mdl</UNC>
-            </Path>
-        </Model>
-    </Models>
-</Project>

clients/python/client.py

@@ -1,53 +1,57 @@
 # -*- coding: utf-8 -*-
+# SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
+# SPDX-License-Identifier: Apache-2.0
+
 import villas_pb2
 import time, socket, errno, sys, os, signal
 
-layer = sys.argv[1] if len(sys.argv) == 2 else 'udp'
+layer = sys.argv[1] if len(sys.argv) == 2 else "udp"
 
-if layer not in ['udp', 'unix']:
-	raise Exception('Unsupported socket type')
+if layer not in ["udp", "unix"]:
+    raise Exception("Unsupported socket type")
 
-if layer == 'unix':
-	local  = '/var/run/villas-node.client.sock'
-	remote = '/var/run/villas-node.server.sock'
+if layer == "unix":
+    local = "/var/run/villas-node.client.sock"
+    remote = "/var/run/villas-node.server.sock"
 
-	skt = socket.socket(socket.AF_UNIX, socket.SOCK_DGRAM)
+    skt = socket.socket(socket.AF_UNIX, socket.SOCK_DGRAM)
 
-	# Delete stale sockets
-	if os.path.exists(local):
-		os.unlink(local)
-elif layer == 'udp':
-	local  = ('0.0.0.0', 12001)
-	remote = ('127.0.0.1', 12000)
+    # Delete stale sockets
+    if os.path.exists(local):
+        os.unlink(local)
+elif layer == "udp":
+    local = ("0.0.0.0", 12001)
+    remote = ("127.0.0.1", 12000)
 
-	skt = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+    skt = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
 
-print('Start client...')
+print("Start client...")
 
 skt.bind(local)
 
 # Try to connect in case Unix domain socket does not exist yet..
 connected = False
 while not connected:
-	try:
-		skt.connect(remote)
-	except socket.error as serr:
-		if serr.errno not in [ errno.ECONNREFUSED, errno.ENOENT ]:
-			raise serr
-			
-		print('Not connected. Retrying in 1 sec')
-		time.sleep(1)
-	else:
-		connected = True
+    try:
+        skt.connect(remote)
+    except socket.error as serr:
+        if serr.errno not in [errno.ECONNREFUSED, errno.ENOENT]:
+            raise serr
 
-print('Ready. Ctrl-C to quit.')
+        print("Not connected. Retrying in 1 sec")
+        time.sleep(1)
+    else:
+        connected = True
+
+print("Ready. Ctrl-C to quit.")
 
 msg = villas_pb2.Message()
 
 
 # Gracefully shutdown
 def sighandler(signum, frame):
-	running = False
+    running = False
+
 
 signal.signal(signal.SIGINT, sighandler)
 signal.signal(signal.SIGTERM, sighandler)
@@ -55,15 +59,15 @@ signal.signal(signal.SIGTERM, sighandler)
 running = True
 
 while running:
-	dgram = skt.recv(1024)
-	if not dgram:
-		break
-	else:
-		msg.ParseFromString(dgram)
-		print(msg)
-		
-		skt.send(msg.SerializeToString())
+    dgram = skt.recv(1024)
+    if not dgram:
+        break
+    else:
+        msg.ParseFromString(dgram)
+        print(msg)
+
+        skt.send(msg.SerializeToString())
 
 skt.close()
 
-print('Bye.')
+print("Bye.")

clients/shmem/CMakeLists.txt

@@ -1,9 +1,8 @@
 # CMakeLists.txt.
 #
-# @author Steffen Vogel <post@steffenvogel.de>
-# @copyright 2014-2022, Institute for Automation of Complex Power Systems, EONERC
-# @license Apache 2.0
-###################################################################################
+# Author: Steffen Vogel <post@steffenvogel.de>
+# SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
+# SPDX-License-Identifier: Apache-2.0
 
 add_executable(villas-shmem villas-shmem.cpp)
 

clients/shmem/villas-shmem.cpp

@@ -1,26 +1,26 @@
-/** Test "client" for the shared memory interface.
+/* Test "client" for the shared memory interface.
  *
  * Waits on the incoming queue, prints received samples and writes them
  * back to the other queue.
  *
- * @author Georg Martin Reinke <georg.reinke@rwth-aachen.de>
- * @copyright 2014-2022, Institute for Automation of Complex Power Systems, EONERC
- * @license Apache 2.0
- *********************************************************************************/
+ * Author: Georg Martin Reinke <georg.reinke@rwth-aachen.de>
+ * SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
+ * SPDX-License-Identifier: Apache-2.0
+ */
 
-#include <iostream>
 #include <atomic>
+#include <iostream>
 
-#include <villas/node/config.hpp>
+#include <villas/colors.hpp>
+#include <villas/log.hpp>
 #include <villas/node.hpp>
+#include <villas/node/config.hpp>
+#include <villas/node/exceptions.hpp>
 #include <villas/pool.hpp>
 #include <villas/sample.hpp>
 #include <villas/shmem.hpp>
-#include <villas/colors.hpp>
 #include <villas/tool.hpp>
-#include <villas/log.hpp>
 #include <villas/utils.hpp>
-#include <villas/node/exceptions.hpp>
 
 namespace villas {
 namespace node {
@@ -29,101 +29,94 @@ namespace tools {
 class Shmem : public Tool {
 
 public:
-	Shmem(int argc, char *argv[]) :
-		Tool(argc, argv, "shmem"),
-		stop(false)
-	{ }
+  Shmem(int argc, char *argv[]) : Tool(argc, argv, "shmem"), stop(false) {}
 
 protected:
-	std::atomic<bool> stop;
+  std::atomic<bool> stop;
 
-	void usage()
-	{
-		std::cout << "Usage: villas-test-shmem WNAME VECTORIZE" << std::endl
-				<< "  WNAME     name of the shared memory object for the output queue" << std::endl
-				<< "  RNAME     name of the shared memory object for the input queue" << std::endl
-				<< "  VECTORIZE maximum number of samples to read/write at a time" << std::endl;
+  void usage() {
+    std::cout
+        << "Usage: villas-test-shmem WNAME VECTORIZE" << std::endl
+        << "  WNAME     name of the shared memory object for the output queue"
+        << std::endl
+        << "  RNAME     name of the shared memory object for the input queue"
+        << std::endl
+        << "  VECTORIZE maximum number of samples to read/write at a time"
+        << std::endl;
 
-		printCopyright();
-	}
+    printCopyright();
+  }
 
-	void handler(int, siginfo_t *, void *)
-	{
-		stop = true;
-	}
+  void handler(int, siginfo_t *, void *) { stop = true; }
 
-	int main()
-	{
-		int ret, readcnt, writecnt, avail;
+  int main() {
+    int ret, readcnt, writecnt, avail;
 
-		struct ShmemInterface shm;
-		struct ShmemConfig conf = {
-			.polling = 0,
-			.queuelen = DEFAULT_SHMEM_QUEUELEN,
-			.samplelen = DEFAULT_SHMEM_SAMPLELEN
-		};
+    struct ShmemInterface shm;
+    struct ShmemConfig conf = {.polling = 0,
+                               .queuelen = DEFAULT_SHMEM_QUEUELEN,
+                               .samplelen = DEFAULT_SHMEM_SAMPLELEN};
 
-		if (argc != 4) {
-			usage();
-			return 1;
-		}
+    if (argc != 4) {
+      usage();
+      return 1;
+    }
 
-		std::string wname = argv[1];
-		std::string rname = argv[2];
-		int vectorize = atoi(argv[3]);
+    std::string wname = argv[1];
+    std::string rname = argv[2];
+    int vectorize = atoi(argv[3]);
 
-		ret = shmem_int_open(wname.c_str(), rname.c_str(), &shm, &conf);
-		if (ret < 0)
-			throw RuntimeError("Failed to open shared-memory interface");
+    ret = shmem_int_open(wname.c_str(), rname.c_str(), &shm, &conf);
+    if (ret < 0)
+      throw RuntimeError("Failed to open shared-memory interface");
 
-		struct Sample *insmps[vectorize], *outsmps[vectorize];
+    struct Sample *insmps[vectorize], *outsmps[vectorize];
 
-		while (!stop) {
-			readcnt = shmem_int_read(&shm, insmps, vectorize);
-			if (readcnt == -1) {
-				logger->info("Node stopped, exiting");
-				break;
-			}
+    while (!stop) {
+      readcnt = shmem_int_read(&shm, insmps, vectorize);
+      if (readcnt == -1) {
+        logger->info("Node stopped, exiting");
+        break;
+      }
 
-			avail = shmem_int_alloc(&shm, outsmps, readcnt);
-			if (avail < readcnt)
-				logger->warn("Pool underrun: {} / {}", avail, readcnt);
+      avail = shmem_int_alloc(&shm, outsmps, readcnt);
+      if (avail < readcnt)
+        logger->warn("Pool underrun: {} / {}", avail, readcnt);
 
-			for (int i = 0; i < avail; i++) {
-				outsmps[i]->sequence = insmps[i]->sequence;
-				outsmps[i]->ts = insmps[i]->ts;
+      for (int i = 0; i < avail; i++) {
+        outsmps[i]->sequence = insmps[i]->sequence;
+        outsmps[i]->ts = insmps[i]->ts;
 
-				int len = MIN(insmps[i]->length, outsmps[i]->capacity);
-				memcpy(outsmps[i]->data, insmps[i]->data, SAMPLE_DATA_LENGTH(len));
+        int len = MIN(insmps[i]->length, outsmps[i]->capacity);
+        memcpy(outsmps[i]->data, insmps[i]->data, SAMPLE_DATA_LENGTH(len));
 
-				outsmps[i]->length = len;
-			}
+        outsmps[i]->length = len;
+      }
 
-			for (int i = 0; i < readcnt; i++)
-				sample_decref(insmps[i]);
+      for (int i = 0; i < readcnt; i++)
+        sample_decref(insmps[i]);
 
-			writecnt = shmem_int_write(&shm, outsmps, avail);
-			if (writecnt < avail)
-				logger->warn("Short write");
+      writecnt = shmem_int_write(&shm, outsmps, avail);
+      if (writecnt < avail)
+        logger->warn("Short write");
 
-			logger->info("Read / Write: {}/{}", readcnt, writecnt);
-		}
+      logger->info("Read / Write: {}/{}", readcnt, writecnt);
+    }
 
-		ret = shmem_int_close(&shm);
-		if (ret)
-			throw RuntimeError("Failed to close shared-memory interface");
+    ret = shmem_int_close(&shm);
+    if (ret)
+      throw RuntimeError("Failed to close shared-memory interface");
 
-		return 0;
-	}
+    return 0;
+  }
 };
 
-} /* namespace tools */
-} /* namespace node */
-} /* namespace villas */
+} // namespace tools
+} // namespace node
+} // namespace villas
 
-int main(int argc, char *argv[])
-{
-	villas::node::tools::Shmem t(argc, argv);
+int main(int argc, char *argv[]) {
+  villas::node::tools::Shmem t(argc, argv);
 
-	return t.run();
+  return t.run();
 }

clients/typhoon/villas_typhoon_ethernet_variable_exchange.tse

@@ -1,5 +1,8 @@
 version = 4.2
 
+// SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
+// SPDX-License-Identifier: Apache-2.0
+
 //
 // Saved by sw version: 2022.1 SP1
 // Save timestamp: 24-Mar-2022 @ 04:26:31 PM

cmake/FindCriterion.cmake

@@ -0,0 +1,28 @@
+# Try to find Criterion
+#
+# Once done this will define
+#  CRITERION_FOUND - System has Criterion
+#  CRITERION_INCLUDE_DIRS - The Criterion include directories
+#  CRITERION_LIBRARIES - The libraries needed to use Criterion
+#
+# SPDX-FileCopyrightText: 2017 Institute for Automation of Complex Power Systems, RWTH Aachen University
+# SPDX-License-Identifier: Apache-2.0
+
+find_package(PkgConfig)
+
+find_path(CRITERION_INCLUDE_DIR criterion/criterion.h
+          PATH_SUFFIXES criterion)
+
+find_library(CRITERION_LIBRARY NAMES criterion libcriterion)
+
+set(CRITERION_LIBRARIES ${CRITERION_LIBRARY})
+set(CRITERION_INCLUDE_DIRS ${CRITERION_INCLUDE_DIR})
+
+include(FindPackageHandleStandardArgs)
+
+# Handle the QUIET and REQUIRED arguments and set CRITERION_FOUND to TRUE
+# if all listed variables are TRUE
+find_package_handle_standard_args(Criterion DEFAULT_MSG
+                                  CRITERION_LIBRARY CRITERION_INCLUDE_DIR)
+
+mark_as_advanced(CRITERION_INCLUDE_DIR CRITERION_LIBRARY)

cmake/FindEtherlab.cmake

@@ -1,21 +1,20 @@
 # CMakeLists.txt.
 #
-# @author Niklas Eiling <niklas.eiling@eonerc.rwth-aachen.de>
-# @author Steffen Vogel <post@steffenvogel.de>
-# @copyright 2018, Institute for Automation of Complex Power Systems, EONERC
-# @license Apache 2.0
-###################################################################################
+# Author: Niklas Eiling <niklas.eiling@eonerc.rwth-aachen.de>
+# Author: Steffen Vogel <post@steffenvogel.de>
+# SPDX-FileCopyrightText: 2018 Institute for Automation of Complex Power Systems, RWTH Aachen University
+# SPDX-License-Identifier: Apache-2.0
 
 find_path(ETHERLAB_INCLUDE_DIR
-	NAMES ecrt.h
-	PATHS
-		/opt/etherlab/include
+    NAMES ecrt.h
+    PATHS
+        /opt/etherlab/include
 )
 
 find_library(ETHERLAB_LIBRARY
-	NAMES ethercat
-	PATHS
-		/opt/etherlab/lib
+    NAMES ethercat
+    PATHS
+        /opt/etherlab/lib
 )
 
 include(FindPackageHandleStandardArgs)

cmake/FindIBVerbs.cmake

@@ -1,23 +1,22 @@
 # CMakeLists.txt.
 #
-# @author Steffen Vogel <post@steffenvogel.de>
-# @copyright 2014-2022, Institute for Automation of Complex Power Systems, EONERC
-# @license Apache 2.0
-###################################################################################
+# Author: Steffen Vogel <post@steffenvogel.de>
+# SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
+# SPDX-License-Identifier: Apache-2.0
 
 find_path(IBVERBS_INCLUDE_DIR
-	NAMES infiniband/verbs.h
+    NAMES infiniband/verbs.h
 )
 
 find_library(IBVERBS_LIBRARY
-	NAMES ibverbs
+    NAMES ibverbs
 )
 
 include(FindPackageHandleStandardArgs)
 # handle the QUIETLY and REQUIRED arguments and set VILLASNODE_FOUND to TRUE
 # if all listed variables are TRUE
 find_package_handle_standard_args(IBVerbs DEFAULT_MSG
-	IBVERBS_LIBRARY IBVERBS_INCLUDE_DIR)
+    IBVERBS_LIBRARY IBVERBS_INCLUDE_DIR)
 
 mark_as_advanced(IBVERBS_INCLUDE_DIR IBVERBS_LIBRARY)
 

cmake/FindOpal.cmake

@@ -1,54 +0,0 @@
-# CMakeLists.txt.
-#
-# @author Steffen Vogel <post@steffenvogel.de>
-# @copyright 2014-2022, Institute for Automation of Complex Power Systems, EONERC
-# @license Apache 2.0
-###################################################################################
-
-set(OPAL_PREFIX /usr/opalrt/common)
-
-find_path(OPAL_INCLUDE_DIR
-	NAMES AsyncApi.h
-	HINTS
-		${OPAL_PREFIX}/include_target/
-		${PROJECT_SOURCE_DIR}/libopal/include/opal/
-
-)
-
-find_library(OPAL_LIBRARY
-	NAMES OpalAsyncApiCore
-	HINTS
-		${OPAL_PREFIX}/lib/
-		${PROJECT_SOURCE_DIR}/libopal/
-)
-
-find_library(OPAL_LIBRARY_IRC
-	NAMES irc
-	HINTS
-	${OPAL_PREFIX}/lib/
-		${PROJECT_SOURCE_DIR}/libopal/
-)
-
-find_library(OPAL_LIBRARY_UTILS
-	NAMES OpalUtils
-	HINTS
-		${OPAL_PREFIX}/lib/redhawk/
-		${OPAL_PREFIX}/lib/redhawk64/
-		${PROJECT_SOURCE_DIR}/libopal/
-)
-
-find_library(OPAL_LIBRARY_CORE
-	NAMES OpalCore
-	HINTS
-		${OPAL_PREFIX}/lib/redhawk/
-		${OPAL_PREFIX}/lib/redhawk64/
-		${PROJECT_SOURCE_DIR}/libopal/
-)
-
-include(FindPackageHandleStandardArgs)
-find_package_handle_standard_args(Opal DEFAULT_MSG OPAL_LIBRARY OPAL_LIBRARY_UTILS OPAL_LIBRARY_CORE OPAL_LIBRARY_IRC OPAL_INCLUDE_DIR)
-
-mark_as_advanced(OPAL_INCLUDE_DIR OPAL_LIBRARY)
-
-set(OPAL_LIBRARIES ${OPAL_LIBRARY} ${OPAL_LIBRARY_UTILS} ${OPAL_LIBRARY_CORE} ${OPAL_LIBRARY_IRC} $ENV{OPAL_LIBPATH} $ENV{OPAL_LIBS})
-set(OPAL_INCLUDE_DIRS ${OPAL_INCLUDE_DIR})

cmake/FindRDMACM.cmake

@@ -1,23 +1,22 @@
 # CMakeLists.txt.
 #
-# @author Steffen Vogel <post@steffenvogel.de>
-# @copyright 2014-2022, Institute for Automation of Complex Power Systems, EONERC
-# @license Apache 2.0
-###################################################################################
+# Author: Steffen Vogel <post@steffenvogel.de>
+# SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
+# SPDX-License-Identifier: Apache-2.0
 
 find_path(RDMACM_INCLUDE_DIR
-	NAMES rdma/rdma_cma.h
+    NAMES rdma/rdma_cma.h
 )
 
 find_library(RDMACM_LIBRARY
-	NAMES rdmacm
+    NAMES rdmacm
 )
 
 include(FindPackageHandleStandardArgs)
 # handle the QUIETLY and REQUIRED arguments and set VILLASNODE_FOUND to TRUE
 # if all listed variables are TRUE
 find_package_handle_standard_args(RDMACM DEFAULT_MSG
-	RDMACM_LIBRARY RDMACM_INCLUDE_DIR)
+    RDMACM_LIBRARY RDMACM_INCLUDE_DIR)
 
 mark_as_advanced(RDMACM_INCLUDE_DIR RDMACM_LIBRARY)
 

cmake/FindSymbol.cmake

@@ -1,21 +1,20 @@
 # CMakeLists.txt.
 #
-# @author Steffen Vogel <post@steffenvogel.de>
-# @copyright 2014-2022, Institute for Automation of Complex Power Systems, EONERC
-# @license Apache 2.0
-###################################################################################
+# Author: Steffen Vogel <post@steffenvogel.de>
+# SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
+# SPDX-License-Identifier: Apache-2.0
 
 function(FindSymbol LIBRARY SYMBOL FOUND)
-	find_program(OBJDUMP_EXECUTABLE NAMES objdump)
+    find_program(OBJDUMP_EXECUTABLE NAMES objdump)
 
-	execute_process(
-		COMMAND /bin/sh -c "${OBJDUMP_EXECUTABLE} -T ${LIBRARY} | grep ${SYMBOL} | wc -l"
-		OUTPUT_VARIABLE OUTPUT
-	)
+    execute_process(
+        COMMAND /bin/sh -c "${OBJDUMP_EXECUTABLE} -T ${LIBRARY} | grep ${SYMBOL} | wc -l"
+        OUTPUT_VARIABLE OUTPUT
+    )
 
-	if(OUTPUT GREATER 0)
-		set(${FOUND} "${SYMBOL}" PARENT_SCOPE)
-	else()
-		set(${FOUND} "${SYMBOL}-NOTFOUND" PARENT_SCOPE)
-	endif()
+    if(OUTPUT GREATER 0)
+        set(${FOUND} "${SYMBOL}" PARENT_SCOPE)
+    else()
+        set(${FOUND} "${SYMBOL}-NOTFOUND" PARENT_SCOPE)
+    endif()
 endfunction()

cmake/GetVersion.cmake

@@ -0,0 +1,105 @@
+# CMakeLists.txt.
+#
+# Author: Steffen Vogel <post@steffenvogel.de>
+# SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
+# SPDX-License-Identifier: Apache-2.0
+#
+# VILLASnode
+
+
+# This CMake function sets the following variables:
+#
+# ${PREFIX}_VERSION_STR       v0.6.3
+# ${PREFIX}_VERSION           0.6.3
+# ${PREFIX}_MAJOR_VERSION     0
+# ${PREFIX}_MINOR_VERSION     6
+# ${PREFIX}_PATCH_VERSION     3
+# ${PREFIX}_RELEASE           1.ci_tests_release.20180823git1cd25c2f
+# ${PREFIX}_GIT_REV           1cd25c2f
+# ${PREFIX}_GIT_BRANCH        ci-tests
+# ${PREFIX}_GIT_BRANCH_NORM   ci_tests
+# ${PREFIX}_VARIANT           release
+# ${PREFIX}_VARIANT_NORM      release
+# ${PREFIX}_BUILD_ID          v0.6.3-1cd25c2f-release
+# ${PREFIX}_BUILD_DATE        20180823
+
+function(GetVersion DIR PREFIX)
+    execute_process(
+        COMMAND git describe --tags --abbrev=0 --match "v*"
+        WORKING_DIRECTORY ${DIR}
+        OUTPUT_VARIABLE VERSION_STR
+        OUTPUT_STRIP_TRAILING_WHITESPACE
+        ERROR_QUIET
+        RESULT_VARIABLE RC
+    )
+
+    if(NOT RC EQUAL 0)
+        set(FOUND_GIT_VERSION OFF PARENT_SCOPE)
+        message(WARNING
+            "Failed to retrieve version information from Git. "
+            "Make sure that the source directory is a Git repo and "
+            "contains at least one valid tag like 'v0.1.0'"
+        )
+    else()
+        set(FOUND_GIT_VERSION ON PARENT_SCOPE)
+
+        string(REGEX REPLACE "^v([0-9]+\\.[0-9]+\\.[0-9]+)$" "\\1"     VERSION       ${VERSION_STR})
+        string(REGEX REPLACE "^v([0-9]+)\\.([0-9]+)\\.([0-9]+)$" "\\1" MAJOR_VERSION ${VERSION_STR})
+        string(REGEX REPLACE "^v([0-9]+)\\.([0-9]+)\\.([0-9]+)$" "\\2" MINOR_VERSION ${VERSION_STR})
+        string(REGEX REPLACE "^v([0-9]+)\\.([0-9]+)\\.([0-9]+)$" "\\3" PATCH_VERSION ${VERSION_STR})
+
+        string(TIMESTAMP BUILD_DATE "%Y%m%d")
+
+        if(CMAKE_BUILD_TYPE)
+            string(TOLOWER "${CMAKE_BUILD_TYPE}" VARIANT)
+        else()
+            set(VARIANT "release")
+        endif()
+
+        if(DEFINED ENV{CI})
+            string(APPEND VARIANT "-ci")
+            string(SUBSTRING $ENV{CI_COMMIT_SHA} 0 7 GIT_REV)
+            set(GIT_BRANCH $ENV{CI_COMMIT_REF_NAME})
+        else()
+            execute_process(
+                COMMAND git rev-parse --short=7 HEAD
+                WORKING_DIRECTORY ${DIR}
+                OUTPUT_VARIABLE GIT_REV
+                OUTPUT_STRIP_TRAILING_WHITESPACE
+            )
+
+            execute_process(
+                COMMAND git rev-parse --abbrev-ref HEAD
+                WORKING_DIRECTORY ${DIR}
+                OUTPUT_VARIABLE GIT_BRANCH
+                OUTPUT_STRIP_TRAILING_WHITESPACE
+            )
+        endif()
+
+        if(DEFINED ENV{CI_COMMIT_TAG})
+            set(RELEASE 1)
+        else()
+            string(REPLACE "-" "_" GIT_BRANCH_NORM ${GIT_BRANCH})
+            string(REPLACE "-" "_" VARIANT_NORM    ${VARIANT})
+
+            set(RELEASE "1.${GIT_BRANCH_NORM}_${VARIANT_NORM}.${BUILD_DATE}git${GIT_REV}")
+        endif()
+
+        set(BUILD_ID "v${MAJOR_VERSION}.${MINOR_VERSION}.${PATCH_VERSION}-${GIT_REV}-${VARIANT}" )
+
+        # Return results to parent scope
+        set(${PREFIX}_VERSION_STR     ${VERSION_STR}      PARENT_SCOPE)
+        set(${PREFIX}_VERSION         ${VERSION}          PARENT_SCOPE)
+        set(${PREFIX}_MAJOR_VERSION   ${MAJOR_VERSION}    PARENT_SCOPE)
+        set(${PREFIX}_MINOR_VERSION   ${MINOR_VERSION}    PARENT_SCOPE)
+        set(${PREFIX}_PATCH_VERSION   ${PATCH_VERSION}    PARENT_SCOPE)
+        set(${PREFIX}_RELEASE         ${RELEASE}          PARENT_SCOPE)
+        set(${PREFIX}_GIT_REV         ${GIT_REV}          PARENT_SCOPE)
+        set(${PREFIX}_GIT_BRANCH      ${GIT_BRANCH}       PARENT_SCOPE)
+        set(${PREFIX}_GIT_BRANCH_NORM ${GIT_BRANCH_NORM}  PARENT_SCOPE)
+        set(${PREFIX}_VARIANT         ${VARIANT}          PARENT_SCOPE)
+        set(${PREFIX}_VARIANT_NORM    ${VARIANT_NORM}     PARENT_SCOPE)
+        set(${PREFIX}_BUILD_ID        ${BUILD_ID}         PARENT_SCOPE)
+        set(${PREFIX}_BUILD_DATE      ${BUILD_DATE}       PARENT_SCOPE)
+    endif()
+endfunction(GetVersion)

cmake/Go.cmake

@@ -1,28 +0,0 @@
-if (CMAKE_HOST_SYSTEM_PROCESSOR STREQUAL "x86_64")
-    set(GO_DOWNLOAD_ARCH "amd64")
-    set(GO_DOWNLOAD_HASH "980e65a863377e69fd9b67df9d8395fd8e93858e7a24c9f55803421e453f4f99")
-elseif(CMAKE_HOST_SYSTEM_PROCESSOR STREQUAL "aarch64")
-    set(GO_DOWNLOAD_ARCH "arm64")
-    set(GO_DOWNLOAD_HASH "57a9171682e297df1a5bd287be056ed0280195ad079af90af16dcad4f64710cb")
-elseif(CMAKE_HOST_SYSTEM_PROCESSOR STREQUAL "armv7l")
-    set(GO_DOWNLOAD_ARCH "armv6l")
-    set(GO_DOWNLOAD_HASH "3287ca2fe6819fa87af95182d5942bf4fa565aff8f145812c6c70c0466ce25ae")
-endif()
-
-FetchContent_Declare(
-    go
-    URL      https://go.dev/dl/go1.17.8.linux-${GO_DOWNLOAD_ARCH}.tar.gz
-    URL_HASH SHA256=${GO_DOWNLOAD_HASH}
-)
-
-message(STATUS "Downloading Go toolchain for linux/${GO_DOWNLOAD_ARCH}")
-FetchContent_MakeAvailable(go)
-
-find_program(GO
-    NAMES go
-    NO_DEFAULT_PATH
-    PATHS
-        ${CMAKE_CURRENT_BINARY_DIR}/_deps/go-src/bin
-        ${go_SOURCE_DIR}
-)
-

cmake/VILLASnodePackaging.cmake

@@ -1,9 +1,8 @@
 # CMakeLists.txt.
 #
-# @author Steffen Vogel <post@steffenvogel.de>
-# @copyright 2014-2022, Institute for Automation of Complex Power Systems, EONERC
-# @license Apache 2.0
-###################################################################################
+# Author: Steffen Vogel <post@steffenvogel.de>
+# SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
+# SPDX-License-Identifier: Apache-2.0
 
 include(CPackComponent)
 get_cmake_property(CPACK_COMPONENTS_ALL COMPONENTS)
@@ -13,7 +12,7 @@ set(CPACK_BUILD_SOURCE_DIRS ${PROJECT_SOURCE_DIR}/src;${PROJECT_SOURCE_DIR}/lib;
 
 set(CPACK_PACKAGE_NAME "villas-node")
 set(CPACK_PACKAGE_VENDOR ${PROJECT_AUTHOR})
-set(CPACK_PACKAGE_DESCRIPTION_SUMMARY "This is VILLASnode, a gateway for processing and forwardning simulation data between real-time simulators.")
+set(CPACK_PACKAGE_DESCRIPTION_SUMMARY "Connecting real-time power grid simulation equipment")
 set(CPACK_PACKAGE_VERSION ${CMAKE_PROJECT_VERSION})
 set(CPACK_PACKAGE_VERSION_MAJOR ${CMAKE_PROJECT_MAJOR_VERSION})
 set(CPACK_PACKAGE_VERSION_MINOR ${CMAKE_PROJECT_MINOR_VERSION})
@@ -61,7 +60,7 @@ set(CPACK_RPM_PACKAGE_LICENSE "Apache-2.0")
 set(CPACK_RPM_PACKAGE_URL ${PROJECT_HOMEPAGE_URL})
 set(CPACK_RPM_PACKAGE_GROUP "Development/Libraries")
 
-set(CPACK_RESOURCE_FILE_LICENSE "${PROJECT_SOURCE_DIR}/COPYING.md")
+set(CPACK_RESOURCE_FILE_LICENSE "${PROJECT_SOURCE_DIR}/LICENSE")
 set(CPACK_RESOURCE_FILE_README  "${PROJECT_SOURCE_DIR}/README.md")
 
 set(CPACK_SOURCE_IGNORE_FILES "build/;\\\\.gitmodules;\\\\.git/;\\\\.vscode;\\\\.editorconfig;\\\\.gitlab-ci.yml;\\\\.(docker|git)ignore;\\\\.DS_Store")

cmake/config/Coverage.cmake

@@ -1,9 +1,8 @@
 # CMakeLists.txt.
 #
-# @author Steffen Vogel <post@steffenvogel.de>
-# @copyright 2014-2022, Institute for Automation of Complex Power Systems, EONERC
-# @license Apache 2.0
-###################################################################################
+# Author: Steffen Vogel <post@steffenvogel.de>
+# SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
+# SPDX-License-Identifier: Apache-2.0
 
 set(CMAKE_CXX_FLAGS_COVERAGE
     "${CMAKE_CXX_FLAGS} -fprofile-arcs -ftest-coverage"

cmake/config/Debug.cmake

@@ -1,6 +1,5 @@
 # CMakeLists.txt.
 #
-# @author Steffen Vogel <post@steffenvogel.de>
-# @copyright 2014-2022, Institute for Automation of Complex Power Systems, EONERC
-# @license Apache 2.0
-###################################################################################
+# Author: Steffen Vogel <post@steffenvogel.de>
+# SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
+# SPDX-License-Identifier: Apache-2.0

cmake/config/Profiling.cmake

@@ -1,9 +1,8 @@
 # CMakeLists.txt.
 #
-# @author Steffen Vogel <post@steffenvogel.de>
-# @copyright 2014-2022, Institute for Automation of Complex Power Systems, EONERC
-# @license Apache 2.0
-###################################################################################
+# Author: Steffen Vogel <post@steffenvogel.de>
+# SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
+# SPDX-License-Identifier: Apache-2.0
 
 set(CMAKE_CXX_FLAGS_PROFILING
     "${CMAKE_CXX_FLAGS} -pg"

cmake/config/Release.cmake

@@ -1,6 +1,10 @@
 # CMakeLists.txt.
 #
-# @author Steffen Vogel <post@steffenvogel.de>
-# @copyright 2014-2022, Institute for Automation of Complex Power Systems, EONERC
-# @license Apache 2.0
-###################################################################################
+# Author: Steffen Vogel <post@steffenvogel.de>
+# SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
+# SPDX-License-Identifier: Apache-2.0
+
+# don't treat warnings as errors on normal release builds
+if("${CMAKE_BUILD_TYPE}" STREQUAL "Release" AND NOT DEFINED VILLAS_COMPILE_WARNING_AS_ERROR)
+    set(VILLAS_COMPILE_WARNING_AS_ERROR OFF)
+endif()

cmake/toolchains/debian-arm64.cmake

@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
+# SPDX-License-Identifier: Apache-2.0
+
 set(CMAKE_SYSTEM_NAME Linux)
 set(CMAKE_SYSTEM_PROCESSOR aarch64)
 

cmake/toolchains/debian-armhf.cmake

@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
+# SPDX-License-Identifier: Apache-2.0
+
 set(CMAKE_SYSTEM_NAME Linux)
 set(CMAKE_SYSTEM_PROCESSOR armv7l)
 

common

@@ -1 +0,0 @@
-Subproject commit b18d2aca5b9a158aaba3a0f82cffe253fc427b15

common/CMakeLists.txt

@@ -0,0 +1,38 @@
+## CMakeLists.txt
+#
+# Author: Steffen Vogel <post@steffenvogel.de>
+# SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
+# SPDX-License-Identifier: Apache-2.0
+
+include(FindPkgConfig)
+include(FeatureSummary)
+include(GNUInstallDirs)
+
+# Check packages
+find_package(OpenSSL 1.0.0 REQUIRED)
+find_package(CURL 7.29 REQUIRED)
+find_package(spdlog 1.6.0 REQUIRED)
+find_package(fmt 6.0.0 REQUIRED)
+find_package(Criterion)
+
+pkg_check_modules(JANSSON IMPORTED_TARGET REQUIRED jansson>=2.7)
+pkg_check_modules(LIBCONFIG IMPORTED_TARGET libconfig>=1.4.9)
+pkg_check_modules(UUID IMPORTED_TARGET REQUIRED uuid>=2.23)
+
+if(fmt_VERSION VERSION_LESS "9.0.0")
+    message("Using legacy ostream formatting")
+    set(FMT_LEGACY_OSTREAM_FORMATTER 1)
+endif()
+
+add_subdirectory(lib)
+if(WITH_TESTS)
+    add_subdirectory(tests)
+endif()
+
+# Disable any colored log output
+option(LOG_COLOR_DISABLE "Disable any colored log output" OFF)
+
+configure_file(
+    ${CMAKE_CURRENT_SOURCE_DIR}/include/villas/config.hpp.in
+    ${CMAKE_CURRENT_BINARY_DIR}/include/villas/config.hpp
+)

common/include/villas/boxes.hpp

@@ -0,0 +1,51 @@
+/* Various helper functions.
+ *
+ * Author: Steffen Vogel <post@steffenvogel.de>
+ * SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#pragma once
+
+// The suffixed of the BOX_ macro a constructed by
+// combining the following letters in the written order:
+//   - U for a line facing upwards
+//   - D for a line facing downwards
+//   - L for a line facing leftwards
+//   - R for a line facing rightwards
+//
+// E.g. a cross can be constructed by combining all line fragments:
+//    BOX_UDLR
+#if 0 // Alternate character set
+#define BOX(chr) "\e(0" chr "\e(B"
+#define BOX_LR BOX("\x71")   // Boxdrawing: ─
+#define BOX_UD BOX("\x78")   // Boxdrawing: │
+#define BOX_UDR BOX("\x74")  // Boxdrawing: ├
+#define BOX_UDLR BOX("\x6E") // Boxdrawing: ┼
+#define BOX_UDL BOX("\x75")  // Boxdrawing: ┤
+#define BOX_ULR BOX("\x76")  // Boxdrawing: ┴
+#define BOX_UL BOX("\x6A")   // Boxdrawing: ┘
+#define BOX_DLR BOX("\x77")  // Boxdrawing: ┘
+#define BOX_DL BOX("\x6B")   // Boxdrawing: ┘
+#elif 1                      // UTF-8
+#define BOX_LR "─"           // Boxdrawing: ─
+#define BOX_UD "│"           // Boxdrawing: │
+#define BOX_UDR "├"          // Boxdrawing: ├
+#define BOX_UDLR "┼"         // Boxdrawing: ┼
+#define BOX_UDL "┤"          // Boxdrawing: ┤
+#define BOX_ULR "┴"          // Boxdrawing: ┴
+#define BOX_UL "┘"           // Boxdrawing: ┘
+#define BOX_DLR "┬"          // Boxdrawing: ┘
+#define BOX_DL "┐"           // Boxdrawing: ┘
+#define BOX_UR "└"           // Boxdrawing: └
+#else                        // ASCII
+#define BOX_LR "-"           // Boxdrawing: ─
+#define BOX_UD "|"           // Boxdrawing: │
+#define BOX_UDR "+"          // Boxdrawing: ├
+#define BOX_UDLR "+"         // Boxdrawing: ┼
+#define BOX_UDL "+"          // Boxdrawing: ┤
+#define BOX_ULR "+"          // Boxdrawing: ┴
+#define BOX_UL "+"           // Boxdrawing: ┘
+#define BOX_DLR "+"          // Boxdrawing: ┘
+#define BOX_DL "+"           // Boxdrawing: ┘
+#endif

common/include/villas/buffer.hpp

@@ -0,0 +1,37 @@
+/* A simple buffer for encoding streamed JSON messages.
+ *
+ * Author: Steffen Vogel <post@steffenvogel.de>
+ * SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#pragma once
+
+#include <vector>
+
+#include <cstdlib>
+
+#include <jansson.h>
+
+namespace villas {
+
+class Buffer : public std::vector<char> {
+
+protected:
+  static int callback(const char *data, size_t len, void *ctx);
+
+public:
+  Buffer(const char *buf, size_type len) : std::vector<char>(buf, buf + len) {}
+
+  Buffer(size_type count = 0) : std::vector<char>(count, 0) {}
+
+  // Encode JSON document /p j and append it to the buffer
+  int encode(json_t *j, int flags = 0);
+
+  // Decode JSON document from the beginning of the buffer
+  json_t *decode();
+
+  void append(const char *data, size_t len) { insert(end(), data, data + len); }
+};
+
+} // namespace villas

common/include/villas/colors.hpp

@@ -0,0 +1,31 @@
+/* Various helper functions.
+ *
+ * Author: Steffen Vogel <post@steffenvogel.de>
+ * SPDX-FileCopyrightText: 2017 Institute for Automation of Complex Power Systems, RWTH Aachen University
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#pragma once
+
+#include <villas/config.hpp>
+
+// CPP stringification
+#define XSTR(x) STR(x)
+#define STR(x) #x
+
+// Some color escape codes for pretty log messages
+#ifdef LOG_COLOR_DISABLE
+#define CLR(clr, str) str
+#else
+#define CLR(clr, str) "\e[" XSTR(clr) "m" str "\e[0m"
+#endif
+
+#define CLR_GRY(str) CLR(30, str) // Print str in gray
+#define CLR_RED(str) CLR(31, str) // Print str in red
+#define CLR_GRN(str) CLR(32, str) // Print str in green
+#define CLR_YEL(str) CLR(33, str) // Print str in yellow
+#define CLR_BLU(str) CLR(34, str) // Print str in blue
+#define CLR_MAG(str) CLR(35, str) // Print str in magenta
+#define CLR_CYN(str) CLR(36, str) // Print str in cyan
+#define CLR_WHT(str) CLR(37, str) // Print str in white
+#define CLR_BLD(str) CLR(1, str)  // Print str in bold

common/include/villas/common.hpp

@@ -0,0 +1,36 @@
+/* Some common defines, enums and datastructures.
+ *
+ * Author: Steffen Vogel <post@steffenvogel.de>
+ * SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#pragma once
+
+#include <string>
+
+// Common states for most objects in VILLAScommon (paths, nodes, hooks, plugins)
+enum class State {
+  DESTROYED = 0,
+  INITIALIZED = 1,
+  PARSED = 2,
+  CHECKED = 3,
+  STARTED = 4,
+  STOPPED = 5,
+  PENDING_CONNECT = 6,
+  CONNECTED = 7,
+  PAUSED = 8,
+  STARTING = 9,
+  STOPPING = 10,
+  PAUSING = 11,
+  RESUMING = 12,
+  PREPARED = 13
+};
+
+// Callback to destroy list elements.
+//
+// @param data A pointer to the data which should be freed.
+typedef int (*dtor_cb_t)(void *);
+
+// Convert state enum to human readable string.
+std::string stateToString(enum State s);

common/include/villas/compat.hpp

@@ -0,0 +1,44 @@
+/* Compatability for different library versions.
+ *
+ * Author: Steffen Vogel <post@steffenvogel.de>
+ * SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#pragma once
+
+#include <jansson.h>
+
+#include <villas/config.hpp>
+
+#if JANSSON_VERSION_HEX < 0x020A00
+size_t json_dumpb(const json_t *json, char *buffer, size_t size, size_t flags);
+
+int json_dumpfd(const json_t *json, int output, size_t flags);
+json_t *json_loadfd(int input, size_t flags, json_error_t *error);
+#endif
+
+#if defined(WITH_CONFIG) && (LIBCONFIG_VER_MAJOR <= 1) &&                      \
+    (LIBCONFIG_VER_MINOR < 5)
+#include <libconfig.h>
+
+#define config_setting_lookup config_lookup_from
+#endif
+
+#ifdef __MACH__
+#include <libkern/OSByteOrder.h>
+
+#define le16toh(x) OSSwapLittleToHostInt16(x)
+#define le32toh(x) OSSwapLittleToHostInt32(x)
+#define le64toh(x) OSSwapLittleToHostInt64(x)
+#define be16toh(x) OSSwapBigToHostInt16(x)
+#define be32toh(x) OSSwapBigToHostInt32(x)
+#define be64toh(x) OSSwapBigToHostInt64(x)
+
+#define htole16(x) OSSwapHostToLittleInt16(x)
+#define htole32(x) OSSwapHostToLittleInt32(x)
+#define htole64(x) OSSwapHostToLittleInt64(x)
+#define htobe16(x) OSSwapHostToBigInt16(x)
+#define htobe32(x) OSSwapHostToBigInt32(x)
+#define htobe64(x) OSSwapHostToBigInt64(x)
+#endif // __MACH__

common/include/villas/config.hpp.in

@@ -0,0 +1,52 @@
+/** Compile time configuration
+ *
+ * This file contains some compiled-in settings.
+ * This settings are not part of the configuration file.
+ *
+ * Author: Steffen Vogel <post@steffenvogel.de>
+ * SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
+ * SPDX-License-Identifier: Apache-2.0
+ *********************************************************************************/
+
+#pragma once
+
+#define PROJECT_VERSION_STR	"@CMAKE_PROJECT_VERSION_STR@"
+#define PROJECT_VERSION		"@CMAKE_PROJECT_VERSION@"
+#define PROJECT_MAJOR_VERSION	 @CMAKE_PROJECT_MAJOR_VERSION@
+#define PROJECT_MINOR_VERSION	 @CMAKE_PROJECT_MINOR_VERSION@
+#define PROJECT_PATCH_VERSION	 @CMAKE_PROJECT_PATCH_VERSION@
+#define PROJECT_RELEASE		"@CMAKE_PROJECT_RELEASE@"
+#define PROJECT_GIT_REV		"@CMAKE_PROJECT_GIT_REV@"
+#define PROJECT_GIT_BRANCH	"@CMAKE_PROJECT_GIT_BRANCH@"
+#define PROJECT_GIT_BRANCH_NORM	"@CMAKE_PROJECT_GIT_BRANCH_NORM@"
+#define PROJECT_VARIANT		"@CMAKE_PROJECT_VARIANT@"
+#define PROJECT_VARIANT_NORM	"@CMAKE_PROJECT_VARIANT_NORM@"
+#define PROJECT_BUILD_ID	"@CMAKE_PROJECT_BUILD_ID@"
+#define PROJECT_BUILD_DATE	"@CMAKE_PROJECT_BUILD_DATE@"
+
+#define PROJECT_HOMEPAGE_URL	"@CMAKE_PROJECT_HOMEPAGE_URL@"
+#define PROJECT_NAME		"@CMAKE_PROJECT_DESCRIPTION@"
+
+#define HTTP_USER_AGENT		PROJECT_NAME " (" PROJECT_BUILD_ID ")"
+
+// Hard-coded cache line size
+#if defined(__x86_64__) || defined(__i386__) || defined(__arm__) || defined(__aarch64__)
+  #define CACHELINE_SIZE 64
+#else
+  #error "Unsupported architecture"
+#endif
+
+// Paths
+#define PREFIX			"@CMAKE_INSTALL_PREFIX@"
+#define PLUGIN_PATH		"@CMAKE_INSTALL_PREFIX@/share/villas/node/plugins"
+#define SYSFS_PATH		"/sys"
+#define PROCFS_PATH		"/proc"
+
+// Width of log output in characters
+#define LOG_WIDTH		80
+#define LOG_HEIGHT		25
+
+#cmakedefine LOG_COLOR_DISABLE
+
+// Library Features
+#cmakedefine FMT_LEGACY_OSTREAM_FORMATTER

common/include/villas/cpuset.hpp

@@ -0,0 +1,126 @@
+/* Human readable cpusets.
+ *
+ * Author: Steffen Vogel <post@steffenvogel.de>
+ * SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#pragma once
+
+#ifdef __linux__
+
+#include <cstdint>
+#include <sched.h>
+
+#include <villas/exceptions.hpp>
+
+namespace villas {
+namespace utils {
+
+class CpuSet {
+
+protected:
+  cpu_set_t *setp;
+
+  unsigned num_cpus;
+  size_t sz;
+
+public:
+  CpuSet() : num_cpus(sizeof(uintmax_t) * 8), sz(CPU_ALLOC_SIZE(num_cpus)) {
+
+    setp = CPU_ALLOC(num_cpus);
+    if (!setp)
+      throw MemoryAllocationError();
+
+    zero();
+  }
+
+  // Parses string with list of CPU ranges.
+  //
+  // @param str Human readable representation of the set.
+  CpuSet(const std::string &str);
+
+  CpuSet(const char *str);
+
+  // Convert integer to cpu_set_t.
+  //
+  // @param set An integer number which is used as the mask
+  CpuSet(uintmax_t set);
+
+  // Convert cpu_set_t to an integer. */
+  operator uintmax_t();
+
+  operator const cpu_set_t *() { return setp; }
+
+  // Returns human readable representation of the cpuset.
+  //
+  // The output format is a list of CPUs with ranges (for example, "0,1,3-9").
+  operator std::string();
+
+  ~CpuSet() { CPU_FREE(setp); }
+
+  CpuSet(const CpuSet &src) : CpuSet(src.num_cpus) {
+    memcpy(setp, src.setp, sz);
+  }
+
+  bool empty() const { return count() == 0; }
+
+  bool full() const { return count() == num_cpus; }
+
+  unsigned count() const { return CPU_COUNT_S(sz, setp); }
+
+  void zero() { CPU_ZERO_S(sz, setp); }
+
+  size_t size() const { return sz; }
+
+  CpuSet operator~() {
+    CpuSet full = UINTMAX_MAX;
+
+    return full ^ *this;
+  }
+
+  bool operator==(const CpuSet &rhs) { return CPU_EQUAL_S(sz, setp, rhs.setp); }
+
+  CpuSet &operator&=(const CpuSet &rhs) {
+    CPU_AND_S(sz, setp, setp, rhs.setp);
+    return *this;
+  }
+
+  CpuSet &operator|=(const CpuSet &rhs) {
+    CPU_OR_S(sz, setp, setp, rhs.setp);
+    return *this;
+  }
+
+  CpuSet &operator^=(const CpuSet &rhs) {
+    CPU_XOR_S(sz, setp, setp, rhs.setp);
+    return *this;
+  }
+
+  friend CpuSet operator&(CpuSet lhs, const CpuSet &rhs) {
+    lhs &= rhs;
+    return lhs;
+  }
+
+  friend CpuSet operator|(CpuSet lhs, const CpuSet &rhs) {
+    lhs |= rhs;
+    return lhs;
+  }
+
+  friend CpuSet operator^(CpuSet lhs, const CpuSet &rhs) {
+    lhs ^= rhs;
+    return lhs;
+  }
+
+  bool operator[](size_t cpu) const { return isSet(cpu); }
+
+  bool isSet(size_t cpu) const { return CPU_ISSET_S(cpu, sz, setp); }
+
+  void clear(size_t cpu) { CPU_CLR_S(cpu, sz, setp); }
+
+  void set(size_t cpu) { CPU_SET_S(cpu, sz, setp); }
+};
+
+} // namespace utils
+} // namespace villas
+
+#endif

common/include/villas/dsp/exponential_window.hpp

@@ -0,0 +1,32 @@
+/* An exponential window.
+ *
+ * Author: Steffen Vogel <post@steffenvogel.de>
+ * SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#pragma once
+
+#include <villas/dsp/window.hpp>
+
+namespace villas {
+namespace dsp {
+
+template <typename T> class ExponentialWindow {
+
+protected:
+  T a;
+  T last;
+
+public:
+  ExponentialWindow(T _a, T i = 0) : a(a), last(i) {}
+
+  T update(T in) {
+    last = a * in + (1 - a) * last;
+
+    return last;
+  }
+};
+
+} // namespace dsp
+} // namespace villas