goreleaser.yaml

# Copyright 2021 OpenSSF Scorecard Authors
#
# 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.

name: goreleaser

on:
  push:
    tags:
      - "*" # triggers only if push new tag version, like `0.8.4` or else

permissions:
  contents: read

env:
  GO_VERSION: 1.22

jobs:
  goreleaser:
    outputs:
      hashes: ${{ steps.hash.outputs.hashes }}
    permissions:
      contents: write  # for goreleaser/goreleaser-action to create a GitHub release
    runs-on: ubuntu-latest
    steps:
      - name: Harden Runner
        uses: step-security/harden-runner@17d0e2bd7d51742c71671bd19fa12bdc9d40a3d6 # v1
        with:
          egress-policy: audit # TODO: change to 'egress-policy: block' after couple of runs

      - name: Checkout
        uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
        with:
          fetch-depth: 0
      - name: Set up Go
        uses: actions/setup-go@cdcb36043654635271a94b9a6d1392de5bb323a7 # v2.2.0
        with:
          go-version: ${{ env.GO_VERSION }}
          check-latest: true
      - name: Configure ldflags
        id: ldflags
        run: echo "version_flags=$(./scripts/version-ldflags)" >> "$GITHUB_OUTPUT"
      - name: Run GoReleaser
        id: run-goreleaser
        uses: goreleaser/goreleaser-action@286f3b13b1b49da4ac219696163fb8c1c93e1200 # v6.0.0
        with:
          args: release --clean
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          VERSION_LDFLAGS: ${{ steps.ldflags.outputs.version_flags }}
      - name: Generate subject
        id: hash
        env:
          ARTIFACTS: "${{ steps.run-goreleaser.outputs.artifacts }}"
        run: |
          set -euo pipefail

          checksum_file=$(echo "$ARTIFACTS" | jq -r '.[] | select (.type=="Checksum") | .path')
          echo "hashes=$(cat $checksum_file | base64 -w0)" >> "$GITHUB_OUTPUT"

  provenance:
    needs: [goreleaser]
    permissions:
      actions: read # To read the workflow path.
      id-token: write # To sign the provenance.
      contents: write # To add assets to a release.
    uses: slsa-framework/slsa-github-generator/.github/workflows/generator_generic_slsa3.yml@v2.0.0
    with:
      base64-subjects: "${{ needs.goreleaser.outputs.hashes }}"
      upload-assets: true # upload to a new release

  verification:
    needs: [goreleaser, provenance]
    runs-on: ubuntu-latest
    permissions: read-all
    steps:
      - name: Install the verifier
        uses: slsa-framework/slsa-verifier/actions/installer@v2.5.1

      - name: Download assets
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          PROVENANCE: "${{ needs.provenance.outputs.provenance-name }}"
        run: |
          set -euo pipefail
          gh -R "$GITHUB_REPOSITORY" release download "$GITHUB_REF_NAME" -p "*.tar.gz"
          gh -R "$GITHUB_REPOSITORY" release download "$GITHUB_REF_NAME" -p "$PROVENANCE"
      - name: Verify assets
        env:
          CHECKSUMS: ${{ needs.goreleaser.outputs.hashes }}
          PROVENANCE: "${{ needs.provenance.outputs.provenance-name }}"
        run: |
          set -euo pipefail
          checksums=$(echo "$CHECKSUMS" | base64 -d)
          while read -r line; do
              fn=$(echo $line | cut -d ' ' -f2)
              echo "Verifying $fn"
              slsa-verifier verify-artifact --provenance-path "$PROVENANCE" \
                                            --source-uri "github.com/$GITHUB_REPOSITORY" \
                                            --source-tag "$GITHUB_REF_NAME" \
                                            "$fn"
          done <<<"$checksums"