chore: apply security best practices for CI

.github/dependabot.yml

@@ -5,3 +5,8 @@ updates:
     directory: "/"
     schedule:
       interval: "monthly"
+
+  - package-ecosystem: gomod
+    directory: /
+    schedule:
+      interval: weekly

.github/workflows/ci.yml

@@ -16,6 +16,9 @@ env:
   # https://github.com/actions/setup-go/issues/491
   GOTOOLCHAIN: local
 
+permissions:
+  contents: read
+
 jobs:
   test:
     strategy:
@@ -60,11 +63,16 @@ jobs:
       pull-requests: read
       actions: write # to allow uploading artifacts and cache
     steps:
+    - name: Harden the runner (Audit all outbound calls)
+      uses: step-security/harden-runner@002fdce3c6a235733a90a27c80493a3241e56863 # v2.12.1
+      with:
+        egress-policy: audit
+
     - name: Checkout code
-      uses: actions/checkout@v4
+      uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
 
     - name: Install Go
-      uses: actions/setup-go@v5
+      uses: actions/setup-go@d35c59abb061a4a6fb18e82ac0862c26744d6ab5 # v5.5.0
       with:
         go-version: ${{ matrix.GO_SEMVER }}
         check-latest: true
@@ -111,7 +119,7 @@ jobs:
         ./caddy stop
 
     - name: Publish Build Artifact
-      uses: actions/upload-artifact@v4
+      uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2
       with:
         name: caddy_${{ runner.os }}_go${{ matrix.go }}_${{ steps.vars.outputs.short_sha }}
         path: ${{ matrix.CADDY_BIN_PATH }}
@@ -152,8 +160,14 @@ jobs:
     if: github.event.pull_request.head.repo.full_name == 'caddyserver/caddy' && github.actor != 'dependabot[bot]'
     continue-on-error: true  # August 2020: s390x VM is down due to weather and power issues
     steps:
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@002fdce3c6a235733a90a27c80493a3241e56863 # v2.12.1
+        with:
+          egress-policy: audit
+          allowed-endpoints: ci-s390x.caddyserver.com:22
+
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
       - name: Run Tests
         run: |
           set +e
@@ -205,23 +219,28 @@ jobs:
       pull-requests: read
     if: github.event.pull_request.head.repo.full_name == 'caddyserver/caddy' && github.actor != 'dependabot[bot]'
     steps:
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@002fdce3c6a235733a90a27c80493a3241e56863 # v2.12.1
+        with:
+          egress-policy: audit
+
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
 
-      - uses: goreleaser/goreleaser-action@v6
+      - uses: goreleaser/goreleaser-action@9c156ee8a17a598857849441385a2041ef570552 # v6.3.0
         with:
           version: latest
           args: check
       - name: Install Go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@d35c59abb061a4a6fb18e82ac0862c26744d6ab5 # v5.5.0
         with:
           go-version: "~1.24"
           check-latest: true
       - name: Install xcaddy
         run: |
           go install github.com/caddyserver/xcaddy/cmd/xcaddy@latest
           xcaddy version
-      - uses: goreleaser/goreleaser-action@v6
+      - uses: goreleaser/goreleaser-action@9c156ee8a17a598857849441385a2041ef570552 # v6.3.0
         with:
           version: latest
           args: build --single-target --snapshot

.github/workflows/cross-build.yml

@@ -14,6 +14,9 @@ env:
   # https://github.com/actions/setup-go/issues/491
   GOTOOLCHAIN: local
 
+permissions:
+  contents: read
+
 jobs:
   build:
     strategy:
@@ -45,11 +48,16 @@ jobs:
       pull-requests: read
     continue-on-error: true
     steps:
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@002fdce3c6a235733a90a27c80493a3241e56863 # v2.12.1
+        with:
+          egress-policy: audit
+
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
 
       - name: Install Go
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@d35c59abb061a4a6fb18e82ac0862c26744d6ab5 # v5.5.0
         with:
           go-version: ${{ matrix.GO_SEMVER }}
           check-latest: true

.github/workflows/lint.yml

@@ -44,14 +44,19 @@ jobs:
     runs-on: ${{ matrix.OS_LABEL }}
 
     steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-go@v5
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@002fdce3c6a235733a90a27c80493a3241e56863 # v2.12.1
+        with:
+          egress-policy: audit
+
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/setup-go@d35c59abb061a4a6fb18e82ac0862c26744d6ab5 # v5.5.0
         with:
           go-version: '~1.24'
           check-latest: true
 
       - name: golangci-lint
-        uses: golangci/golangci-lint-action@v8
+        uses: golangci/golangci-lint-action@4afd733a84b1f43292c63897423277bb7f4313a9 # v8.0.0
         with:
           version: latest
 
@@ -67,8 +72,13 @@ jobs:
       pull-requests: read
     runs-on: ubuntu-latest
     steps:
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@002fdce3c6a235733a90a27c80493a3241e56863 # v2.12.1
+        with:
+          egress-policy: audit
+
       - name: govulncheck
-        uses: golang/govulncheck-action@v1
+        uses: golang/govulncheck-action@b625fbe08f3bccbe446d94fbf87fcc875a4f50ee # v1.0.4
         with:
           go-version-input: '~1.24.1'
           check-latest: true
@@ -79,10 +89,15 @@ jobs:
       contents: read
       pull-requests: write
     steps:
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@002fdce3c6a235733a90a27c80493a3241e56863 # v2.12.1
+        with:
+          egress-policy: audit
+
       - name: 'Checkout Repository'
-        uses: actions/checkout@v4
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
       - name: 'Dependency Review'
-        uses: actions/dependency-review-action@v4
+        uses: actions/dependency-review-action@da24556b548a50705dd671f47852072ea4c105d9 # v4.7.1
         with:
           comment-summary-in-pr: on-failure
           # https://github.com/actions/dependency-review-action/issues/430#issuecomment-1468975566

.github/workflows/release.yml

@@ -9,6 +9,9 @@ env:
   # https://github.com/actions/setup-go/issues/491
   GOTOOLCHAIN: local
 
+permissions:
+  contents: read
+
 jobs:
   release:
     name: Release
@@ -35,19 +38,24 @@ jobs:
       contents: write
 
     steps:
+    - name: Harden the runner (Audit all outbound calls)
+      uses: step-security/harden-runner@002fdce3c6a235733a90a27c80493a3241e56863 # v2.12.1
+      with:
+        egress-policy: audit
+
     - name: Checkout code
-      uses: actions/checkout@v4
+      uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
       with:
         fetch-depth: 0
 
     - name: Install Go
-      uses: actions/setup-go@v5
+      uses: actions/setup-go@d35c59abb061a4a6fb18e82ac0862c26744d6ab5 # v5.5.0
       with:
         go-version: ${{ matrix.GO_SEMVER }}
         check-latest: true
 
     # Force fetch upstream tags -- because 65 minutes
-    # tl;dr: actions/checkout@v4 runs this line:
+    # tl;dr: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2 runs this line:
     #   git -c protocol.version=2 fetch --no-tags --prune --progress --no-recurse-submodules --depth=1 origin +ebc278ec98bb24f2852b61fde2a9bf2e3d83818b:refs/tags/
     # which makes its own local lightweight tag, losing all the annotations in the process. Our earlier script ran:
     #   git fetch --prune --unshallow
@@ -101,11 +109,11 @@ jobs:
         git verify-tag "${{ steps.vars.outputs.version_tag }}" || exit 1
 
     - name: Install Cosign
-      uses: sigstore/cosign-installer@main
+      uses: sigstore/cosign-installer@e9a05e6d32d7ed22b5656cd874ef31af58d05bfa # main
     - name: Cosign version
       run: cosign version
     - name: Install Syft
-      uses: anchore/sbom-action/download-syft@main
+      uses: anchore/sbom-action/download-syft@9246b90769f852b3a8921f330c59e0b3f439d6e9 # main
     - name: Syft version
       run: syft version
     - name: Install xcaddy
@@ -114,7 +122,7 @@ jobs:
         xcaddy version
     # GoReleaser will take care of publishing those artifacts into the release
     - name: Run GoReleaser
-      uses: goreleaser/goreleaser-action@v6
+      uses: goreleaser/goreleaser-action@9c156ee8a17a598857849441385a2041ef570552 # v6.3.0
       with:
         version: latest
         args: release --clean --timeout 60m

.github/workflows/release_published.yml

@@ -5,6 +5,9 @@ on:
   release:
     types: [published]
 
+permissions:
+  contents: read
+
 jobs:
   release:
     name: Release Published
@@ -20,16 +23,21 @@ jobs:
     steps:
 
     # See https://github.com/peter-evans/repository-dispatch
+    - name: Harden the runner (Audit all outbound calls)
+      uses: step-security/harden-runner@002fdce3c6a235733a90a27c80493a3241e56863 # v2.12.1
+      with:
+        egress-policy: audit
+
     - name: Trigger event on caddyserver/dist
-      uses: peter-evans/repository-dispatch@v3
+      uses: peter-evans/repository-dispatch@ff45666b9427631e3450c54a1bcbee4d9ff4d7c0 # v3.0.0
       with:
         token: ${{ secrets.REPO_DISPATCH_TOKEN }}
         repository: caddyserver/dist
         event-type: release-tagged
         client-payload: '{"tag": "${{ github.event.release.tag_name }}"}'
 
     - name: Trigger event on caddyserver/caddy-docker
-      uses: peter-evans/repository-dispatch@v3
+      uses: peter-evans/repository-dispatch@ff45666b9427631e3450c54a1bcbee4d9ff4d7c0 # v3.0.0
       with:
         token: ${{ secrets.REPO_DISPATCH_TOKEN }}
         repository: caddyserver/caddy-docker

.github/workflows/scorecard.yml

@@ -12,7 +12,10 @@ on:
   schedule:
     - cron: '20 2 * * 5'
   push:
-    branches: [ "master" ]
+    branches: [ "master", "2.*" ]
+  pull_request:
+    branches: [ "master", "2.*" ]
+
 
 # Declare default permissions as read only.
 permissions: read-all
@@ -33,6 +36,11 @@ jobs:
       # actions: read
 
     steps:
+      - name: Harden the runner (Audit all outbound calls)
+        uses: step-security/harden-runner@002fdce3c6a235733a90a27c80493a3241e56863 # v2.12.1
+        with:
+          egress-policy: audit
+
       - name: "Checkout code"
         uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
         with:
@@ -73,6 +81,6 @@ jobs:
       # Upload the results to GitHub's code scanning dashboard (optional).
       # Commenting out will disable upload of results to your repo's Code Scanning dashboard
       - name: "Upload to code-scanning"
-        uses: github/codeql-action/upload-sarif@v3
+        uses: github/codeql-action/upload-sarif@ce28f5bb42b7a9f2c824e633a3f6ee835bab6858 # v3.29.0
         with:
           sarif_file: results.sarif

.pre-commit-config.yaml

@@ -0,0 +1,20 @@
+repos:
+- repo: https://github.com/gitleaks/gitleaks
+  rev: v8.16.3
+  hooks:
+  - id: gitleaks
+- repo: https://github.com/golangci/golangci-lint
+  rev: v1.52.2
+  hooks:
+  - id: golangci-lint-config-verify
+  - id: golangci-lint
+  - id: golangci-lint-fmt
+- repo: https://github.com/jumanjihouse/pre-commit-hooks
+  rev: 3.0.0
+  hooks:
+  - id: shellcheck
+- repo: https://github.com/pre-commit/pre-commit-hooks
+  rev: v4.4.0
+  hooks:
+  - id: end-of-file-fixer
+  - id: trailing-whitespace