feat: reusable secret scanning, SAST, dependency and lint workflows

.forgejo/workflows/deps.yml

@@ -0,0 +1,26 @@
+# Known-vulnerable dependencies, via osv-scanner against the OSV database.
+#
+# Reads every lockfile and manifest it recognises (pnpm/npm/yarn, pip/uv/poetry,
+# go.mod, NuGet, Cargo and more). Accepted vulnerabilities go in an
+# osv-scanner.toml in the calling repo as [[IgnoredVulns]] entries with a
+# reason and an ignoreUntil date, so an exception expires instead of
+# silently living forever.
+on:
+  workflow_call:
+
+jobs:
+  osv-scanner:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: osv-scanner
+        run: |
+          osv-scanner --version | head -1
+          rc=0
+          osv-scanner scan source --recursive . || rc=$?
+          # 128 means no lockfile or manifest was found: nothing to check, not a failure.
+          if [ "$rc" -eq 128 ]; then
+            echo "No supported lockfiles or manifests found; nothing to scan."
+            exit 0
+          fi
+          exit "$rc"

.forgejo/workflows/lint.yml

@@ -0,0 +1,103 @@
+# Lint gates, each switched on by the files present in the calling repo.
+#
+#   shell scripts     shellcheck         (*.sh, *.bash)
+#   Python            ruff check         (repo's ruff/pyproject config if any)
+#   Dockerfiles       hadolint           (repo's .hadolint.yaml if any)
+#   YAML              yamllint           (repo's .yamllint if any, else relaxed)
+#   CI workflows      actionlint         (.forgejo/ and .github/ workflows)
+#   OpenTofu/HCL      tofu fmt + tflint  (repo's .tflint.hcl if any)
+#
+# Every linter runs even if an earlier one failed, so one push shows every
+# problem; the job fails if any of them did. Turn one off with its input.
+on:
+  workflow_call:
+    inputs:
+      shellcheck:
+        type: boolean
+        default: true
+      shellcheck-severity:
+        description: Lowest shellcheck severity that fails the job (error, warning, info, style).
+        type: string
+        default: warning
+      ruff:
+        type: boolean
+        default: true
+      ruff-format:
+        description: Also require `ruff format --check` to pass.
+        type: boolean
+        default: false
+      hadolint:
+        type: boolean
+        default: true
+      yamllint:
+        type: boolean
+        default: true
+      actionlint:
+        type: boolean
+        default: true
+      terraform:
+        type: boolean
+        default: true
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: shellcheck
+        if: ${{ !cancelled() && inputs.shellcheck }}
+        env:
+          SEVERITY: ${{ inputs.shellcheck-severity }}
+        run: |
+          if [ -z "$(git ls-files '*.sh' '*.bash')" ]; then echo "No shell scripts; skipping."; exit 0; fi
+          git ls-files -z '*.sh' '*.bash' | xargs -0 shellcheck --severity="$SEVERITY"
+
+      - name: ruff
+        if: ${{ !cancelled() && inputs.ruff }}
+        env:
+          FORMAT: ${{ inputs.ruff-format }}
+        run: |
+          if [ -z "$(git ls-files '*.py' '*.pyi')" ]; then echo "No Python; skipping."; exit 0; fi
+          ruff --version
+          ruff check --output-format=full .
+          if [ "$FORMAT" = "true" ]; then ruff format --check .; fi
+
+      - name: hadolint
+        if: ${{ !cancelled() && inputs.hadolint }}
+        run: |
+          set -- 'Dockerfile' '*/Dockerfile' 'Dockerfile.*' '*/Dockerfile.*' '*.Dockerfile' 'Containerfile' '*/Containerfile'
+          if [ -z "$(git ls-files "$@")" ]; then echo "No Dockerfiles; skipping."; exit 0; fi
+          git ls-files -z "$@" | xargs -0 hadolint --failure-threshold warning
+
+      - name: yamllint
+        if: ${{ !cancelled() && inputs.yamllint }}
+        run: |
+          if [ -z "$(git ls-files '*.yml' '*.yaml')" ]; then echo "No YAML; skipping."; exit 0; fi
+          cfg=""
+          for f in .yamllint .yamllint.yml .yamllint.yaml; do if [ -f "$f" ]; then cfg="$f"; fi; done
+          # Without a repo config: relaxed rules, and no line-length check,
+          # which mostly flags long URLs and Kubernetes annotations.
+          if [ -n "$cfg" ]; then set -- -c "$cfg"
+          else set -- -d '{extends: relaxed, rules: {line-length: disable}}'; fi
+          git ls-files -z '*.yml' '*.yaml' | xargs -0 yamllint -f parsable "$@"
+
+      - name: actionlint
+        if: ${{ !cancelled() && inputs.actionlint }}
+        run: |
+          set -- '.forgejo/workflows/*.yml' '.forgejo/workflows/*.yaml' '.github/workflows/*.yml' '.github/workflows/*.yaml'
+          if [ -z "$(git ls-files "$@")" ]; then echo "No workflow files; skipping."; exit 0; fi
+          # Forgejo needs runs-on on a job that calls a cross-repo reusable
+          # workflow (the runner expands it, not the server), which GitHub
+          # forbids. Ignore that one GitHub-only rule.
+          git ls-files -z "$@" | xargs -0 actionlint -shellcheck= -ignore '"runs-on" is not available'
+
+      - name: OpenTofu fmt and tflint
+        if: ${{ !cancelled() && inputs.terraform }}
+        run: |
+          if [ -z "$(git ls-files '*.tf')" ]; then echo "No .tf files; skipping."; exit 0; fi
+          rc=0
+          tofu fmt -check -recursive -diff || rc=1
+          if [ -f .tflint.hcl ]; then tflint --init; fi
+          tflint --recursive --format compact || rc=1
+          exit "$rc"

.forgejo/workflows/probe.yml

@@ -1,11 +0,0 @@
-on:
-  workflow_call:
-    inputs:
-      msg:
-        type: string
-        default: hello
-jobs:
-  probe:
-    runs-on: ubuntu-latest
-    steps:
-      - run: echo "reusable probe ran in ${GITHUB_REPOSITORY} msg=${{ inputs.msg }}"

.forgejo/workflows/sast.yml

@@ -0,0 +1,28 @@
+# Static analysis with semgrep.
+#
+# Defaults to the curated p/default ruleset rather than `--config auto`, because
+# auto requires sending metrics to semgrep.dev. Paths are excluded with a
+# .semgrepignore in the calling repo; a single finding can be suppressed inline
+# with a `nosemgrep: <rule-id>` comment.
+on:
+  workflow_call:
+    inputs:
+      config:
+        description: Space-separated semgrep configs (registry packs or paths in the repo).
+        type: string
+        default: p/default
+
+jobs:
+  semgrep:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: semgrep
+        env:
+          CONFIGS: ${{ inputs.config }}
+          SEMGREP_SEND_METRICS: "off"
+        run: |
+          semgrep --version
+          set -- scan --error --metrics=off --disable-version-check
+          for c in $CONFIGS; do set -- "$@" --config "$c"; done
+          semgrep "$@"

.forgejo/workflows/secrets.yml

@@ -0,0 +1,34 @@
+# Secret scanning with gitleaks over the repository's full git history.
+#
+# Full history rather than the pushed range: a push range is unreliable on
+# force-pushes and first pushes, and these repos are small enough that a full
+# scan takes seconds. A secret that was committed and later deleted is still
+# exposed, so history is exactly what needs scanning.
+#
+# The calling repo controls what counts as a finding:
+#   .gitleaks.toml     extra rules or allowlists, picked up automatically
+#   .gitleaksignore    fingerprints of accepted findings, one per line, as
+#                      printed in the "Fingerprint:" line of this job's output
+on:
+  workflow_call:
+    inputs:
+      log-opts:
+        description: Extra `git log` options to narrow the scan, e.g. a commit range. Empty scans all history.
+        type: string
+        default: ""
+
+jobs:
+  gitleaks:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - name: gitleaks
+        env:
+          LOG_OPTS: ${{ inputs.log-opts }}
+        run: |
+          gitleaks version
+          set -- git --redact --verbose --no-banner --exit-code 1
+          if [ -n "$LOG_OPTS" ]; then set -- "$@" --log-opts "$LOG_OPTS"; fi
+          gitleaks "$@" .