name: 'CodeQL'

on:
  push:
    branches: ['master']
    paths-ignore:
      - 'doc/**'
      - '**/man'
      - '**.md'
      - '**.rdoc'
      - '**/.document'
      - '.*.yml'
  pull_request:
    paths-ignore:
      - 'doc/**'
      - '**/man'
      - '**.md'
      - '**.rdoc'
      - '**/.document'
      - '.*.yml'
  schedule:
    - cron: '0 12 * * *'
  workflow_dispatch:

concurrency:
  group: ${{ github.workflow }} / ${{ startsWith(github.event_name, 'pull') && github.ref_name || github.sha }}
  cancel-in-progress: ${{ startsWith(github.event_name, 'pull') }}

permissions: # added using https://github.com/step-security/secure-workflows
  contents: read

jobs:
  analyze:
    name: Analyze
    runs-on: ubuntu-latest
    permissions:
      actions: read # for github/codeql-action/init to get workflow details
      contents: read # for actions/checkout to fetch code
      security-events: write # for github/codeql-action/autobuild to send a status report
    # CodeQL fails to run pull requests from dependabot due to missing write access to upload results.
    if: >-
      ${{!(false
      || contains(github.event.head_commit.message, '[DOC]')
      || contains(github.event.pull_request.title, '[DOC]')
      || contains(github.event.pull_request.labels.*.name, 'Documentation')
      || (github.event_name == 'push' && github.actor == 'dependabot[bot]')
      )}}

    env:
      enable_install_doc: no

    strategy:
      fail-fast: false
      matrix:
        language: ['cpp', 'ruby']

    steps:
      - name: Checkout repository
        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1

      - name: Install libraries
        uses: ./.github/actions/setup/ubuntu

      - uses: ./.github/actions/setup/directories

      - name: Remove an obsolete rubygems vendored file
        run: sudo rm /usr/lib/ruby/vendor_ruby/rubygems/defaults/operating_system.rb

      - name: Initialize CodeQL
        uses: github/codeql-action/init@cdcdbb579706841c47f7063dda365e292e5cad7a # v2.13.4
        with:
          languages: ${{ matrix.language }}

      - name: Autobuild
        uses: github/codeql-action/autobuild@cdcdbb579706841c47f7063dda365e292e5cad7a # v2.13.4

      - name: Perform CodeQL Analysis
        uses: github/codeql-action/analyze@cdcdbb579706841c47f7063dda365e292e5cad7a # v2.13.4
        with:
          category: '/language:${{ matrix.language }}'
          upload: False
          output: sarif-results
          ram: 8192
        # CodeQL randomly hits `OutOfMemoryError "Java heap space"`.
        # GitHub recommends running a larger runner to fix it, but we don't pay for it.
        continue-on-error: true

      - name: filter-sarif
        uses: advanced-security/filter-sarif@f3b8118a9349d88f7b1c0c488476411145b6270d # v1.0
        with:
          patterns: |
            +**/*.rb
            -lib/uri/mailto.rb:rb/overly-large-range
            -lib/uri/rfc3986_parser.rb:rb/overly-large-range
            -lib/bundler/vendor/uri/lib/uri/mailto.rb:rb/overly-large-range
            -lib/bundler/vendor/uri/lib/uri/rfc3986_parser.rb:rb/overly-large-range
            -test/ruby/test_io.rb:rb/non-constant-kernel-open
            -test/open-uri/test_open-uri.rb:rb/non-constant-kernel-open
            -test/open-uri/test_ssl.rb:rb/non-constant-kernel-open
            -spec/ruby/core/io/binread_spec.rb:rb/non-constant-kernel-open
            -spec/ruby/core/io/readlines_spec.rb:rb/non-constant-kernel-open
            -spec/ruby/core/io/foreach_spec.rb:rb/non-constant-kernel-open
            -spec/ruby/core/io/write_spec.rb:rb/non-constant-kernel-open
            -spec/ruby/core/io/read_spec.rb:rb/non-constant-kernel-open
            -spec/ruby/core/kernel/open_spec.rb:rb/non-constant-kernel-open
          input: sarif-results/${{ matrix.language }}.sarif
          output: sarif-results/${{ matrix.language }}.sarif
        if: ${{ matrix.language == 'ruby' }}
        continue-on-error: true

      - name: Upload SARIF
        uses: github/codeql-action/upload-sarif@cdcdbb579706841c47f7063dda365e292e5cad7a # v2.13.4
        with:
          sarif_file: sarif-results/${{ matrix.language }}.sarif
        continue-on-error: true