licenses.yml

name: Licenses

# This workflow will check the licences of any installed composer and  NPM dependencies against a list of
# allowed SPDX identifiers of open source licences. These are contained env variable $SPDX_ALLOWED_DELIMITED
# If any installed non-dev dependencies are found that are not in the allowed list then the job will fail.
# See https://spdx.org/licenses/ for a list of SPDX identifiers.
# Note that the `Unlicense` is an SPDX identifier for an actual license and not a placeholder for a missing license.

on:
  # At 4 AM UTC, only on Saturday
  workflow_dispatch:
  schedule:
    - cron: '0 4 * * 6'

permissions: {}

jobs:
  checklicenses:
    name: Check licenses
    runs-on: ubuntu-latest

    permissions:
      contents: read

    env:
      SPDX_ALLOWED_DELIMITED: 'MIT;MIT-0;ISC;0BSD;BSD-2-Clause;BSD-3-Clause;Apache-2.0;Python-2.0;CC0-1.0;CC-BY-3.0;CC-BY-4.0;Public Domain;Unlicense'

    steps:
      - name: Checkout code
        uses: actions/checkout@eef61447b9ff4aafe5dcd4e0bbf5d482be7e7871 # v4.2.1

      - name: Get PHP version
        id: phpversion
        run: |
          # Get the PHP version to use from composer.json
          PHP=$(jq -r '.require["php"]' composer.json)
          # Remove the leading caret
          PHP=${PHP//^/}
          echo "::set-output name=version::$PHP"

      - name: Install PHP
        uses: shivammathur/setup-php@c541c155eee45413f5b09a52248675b1a2575231 # v2.31.1
        with:
          php-version: ${{ steps.phpversion.outputs.version }}
          extensions: curl, dom, gd, intl, json, ldap, mbstring, mysql, tidy, zip
          tools: composer:v2

      - name: Composer install
        run: composer install

      - name: Composer licenses
        run: |
          # Validate licenses of all composer dependencies are allowed
          echo "Checking licenses of all dependencies"
          composer global require madewithlove/license-checker
          COMPOSER_GLOBAL_HOME=$(composer -q -n config --global home)
          # Update the licenses in installed.json file to be sorted so that allowed SPDX identifier
          # are at the top of the list. This is done because the license-checker will only check the first SPDX.
          SPDX_ALLOWED_DELIMITED=$SPDX_ALLOWED_DELIMITED php -r '
            $allowedSpdxDelimted = getenv("SPDX_ALLOWED_DELIMITED");
            $allowedSpdx = explode(";", $allowedSpdxDelimted);
            $filename = "vendor/composer/installed.json";
            $contents = file_get_contents("vendor/composer/installed.json");
            $json = json_decode($contents, true);
            foreach ($json["packages"] as &$package) {
              if (!isset($package["license"])) {
                throw new Exception("License field missing for package " . $package["name"]);
              }
              usort($package["license"], fn ($spdx) => in_array($spdx, $allowedSpdx) ? -1 : 1);
            }
            file_put_contents($filename, json_encode($json, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES));
          '
          # Translate " " to "_" (and back again later) for any SPDX that has a space in it, such as "Public Domain"
          # Otherwise the bash for loop will split on the space
          SPDX_ALLOWED_LIST=$(echo $SPDX_ALLOWED_DELIMITED | tr " " "_" | tr ";" "\n")
          SPDX_USED_LIST=$($COMPOSER_GLOBAL_HOME/vendor/bin/license-checker --no-dev used)
          for SPDX_USED in $SPDX_USED_LIST; do
            IS_ALLOWED=0
            for SPDX_ALLOWED in $SPDX_ALLOWED_LIST; do
              SPDX_ALLOWED=$(echo $SPDX_ALLOWED | tr "_" " ")
              if [[ $SPDX_USED == $SPDX_ALLOWED ]]; then
                IS_ALLOWED=1
                break
              fi
            done
            if [[ $IS_ALLOWED == 0 ]]; then
              echo "License $SPDX_USED found in composer dependencies is not allowed. Check vendor/composer/installed.json"
              exit 1
            fi
          done
          # Remove license-checker as its name will collide with the npm license checker
          composer global remove madewithlove/license-checker
          echo "All licenses are allowed"

      - name: NPM licenses
        run: |
          # Set nvmdir explicitly before installation. Default dir doesn't work for some reason.
          export NVM_DIR="${HOME}/.nvm"
          # Installation fails if install dir is specified but doesn't exist
          if ! [[ -d "$NVM_DIR" ]]; then
            echo "NVM_DIR '$NVM_DIR' doesn't exist - creating it now"
            mkdir $NVM_DIR
          fi
          # Get install nvm script from gha-run-tests
          curl -s https://raw.githubusercontent.com/silverstripe/gha-run-tests/refs/heads/1/install-nvm.sh > install-nvm.sh
          chmod +x install-nvm.sh
          ./install-nvm.sh
          if [[ $? != 0 ]]; then
            echo "Error while installing nvm"
            exit 1
          fi
          # This loads nvm
          [ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"
          EXCLUDE_PACKAGES='@silverstripe/react-injector@0.2.1;cwp-watea-theme@4.0.0;cwp-starter-theme@4.0.0;glob-to-regexp@0.3.0;jquery.are-you-sure@1.9.0'
          # Loop all package.json files that were previously installed by composer install
          BASEDIR=$(pwd)
          FILES=$(find . | grep package.json | grep -v node_modules | grep -v tinymce)
          for FILE in $FILES; do
            # remove trailing "/package.json"
            SUBDIR="${FILE/\/package.json/}"
            DIR="$BASEDIR/$SUBDIR"
            echo "Checking $DIR"
            cd $DIR
            if [[ ! -f .nvmrc ]]; then
              echo "Missing .nvmrc"
              exit 1
            fi
            nvm install
            nvm use
            if [[ -z $(which yarn) ]]; then
              npm install -g yarn;
            fi
            yarn install --network-concurrency 1
            DEPS=$(jq -r '.dependencies' package.json)
            if [[ $DEPS == "null" ]] || [[ $DEPS == "{}" ]]; then
              echo "No non-dev dependencies found in $DIR"
              continue
            fi
            if [[ -z $(which license-checker) ]]; then
              echo "Installing license-checker"
              npm install -g license-checker
            fi
            license-checker --production --unknown --out /dev/null --onlyAllow "$SPDX_ALLOWED_DELIMITED" --excludePackages "$EXCLUDE_PACKAGES"
            echo "All licenses are allowed for $DIR"
          done
          echo "Passed"