Initial cloudflared gitops app

2026-04-20 01:08:24 +01:00
commit 363d6014f6
18 changed files with 706 additions and 0 deletions
@@ -0,0 +1,111 @@
+#!/usr/bin/env zsh
+
+set -eu
+
+for cmd in git sops openssl; do
+  if ! command -v "${cmd}" >/dev/null 2>&1; then
+    echo "pre-commit: required command missing: ${cmd}" >&2
+    exit 1
+  fi
+done
+
+if [ -z "${SOPS_SYNC_HMAC_KEY:-}" ]; then
+  echo "pre-commit: SOPS_SYNC_HMAC_KEY is required" >&2
+  exit 1
+fi
+
+repo_root=$(git rev-parse --show-toplevel)
+regex_script="${repo_root}/scripts/lib/sops-path-regexes"
+lib_script="${repo_root}/scripts/lib/sops-sync-lib"
+
+if [ ! -x "${regex_script}" ]; then
+  echo "pre-commit: missing helper ${regex_script}" >&2
+  exit 1
+fi
+
+if [ ! -f "${lib_script}" ]; then
+  echo "pre-commit: missing helper ${lib_script}" >&2
+  exit 1
+fi
+
+. "${lib_script}"
+
+regexes=("${(@f)$("${regex_script}")}")
+typeset -A candidates
+
+while IFS= read -r staged_path; do
+  [ -n "${staged_path}" ] || continue
+
+  candidate_enc=""
+  if [[ "${staged_path}" == *.enc.yaml ]]; then
+    candidate_enc="${staged_path}"
+  elif [[ "${staged_path}" == *.yaml ]]; then
+    if git ls-files --error-unmatch -- "${staged_path}" >/dev/null 2>&1; then
+      continue
+    fi
+    candidate_enc=$(plain_to_enc "${staged_path}") || continue
+  fi
+
+  [ -n "${candidate_enc}" ] || continue
+  if matches_any_rule "${candidate_enc}" "${regexes[@]}"; then
+    candidates["${candidate_enc}"]=1
+  fi
+done < <(git diff --cached --name-only --diff-filter=ACMR)
+
+for enc_path in "${(@k)candidates}"; do
+  plain_path=$(enc_to_plain "${enc_path}") || continue
+  sidecar_path=$(hmac_sidecar_for_enc "${enc_path}")
+
+  if [ ! -f "${plain_path}" ]; then
+    continue
+  fi
+
+  if has_unstaged_changes "${plain_path}"; then
+    echo "pre-commit: plaintext file has unstaged changes: ${plain_path}" >&2
+    echo "pre-commit: stage or revert the plaintext change before committing" >&2
+    exit 1
+  fi
+
+  current_hmac=$(compute_hmac_for_file "${plain_path}")
+  tracked_hmac=""
+  if [ -f "${sidecar_path}" ]; then
+    tracked_hmac=$(read_sidecar "${sidecar_path}" || true)
+  fi
+
+  if [ "${current_hmac}" = "${tracked_hmac}" ] && [ -f "${enc_path}" ]; then
+    continue
+  fi
+
+  encrypt_plain_to_enc "${plain_path}" "${enc_path}"
+  write_sidecar "${sidecar_path}" "${current_hmac}"
+  git add "${enc_path}" "${sidecar_path}"
+done
+
+for enc_path in "${(@k)candidates}"; do
+  sidecar_path=$(hmac_sidecar_for_enc "${enc_path}")
+
+  if ! git cat-file -e ":${enc_path}" 2>/dev/null; then
+    echo "pre-commit: staged encrypted file missing: ${enc_path}" >&2
+    exit 1
+  fi
+
+  if ! git cat-file -e ":${sidecar_path}" 2>/dev/null; then
+    echo "pre-commit: staged sync sidecar missing: ${sidecar_path}" >&2
+    exit 1
+  fi
+
+  tmp_enc=$(mktemp)
+  trap 'rm -f "${tmp_enc}"' EXIT INT TERM
+  git show ":${enc_path}" > "${tmp_enc}"
+
+  staged_hmac=$(git show ":${sidecar_path}" | tr -d '\r\n')
+  computed_hmac=$(decrypt_enc_to_plain "${tmp_enc}" | compute_hmac_for_stdin)
+
+  rm -f "${tmp_enc}"
+  trap - EXIT INT TERM
+
+  if [ "${computed_hmac}" != "${staged_hmac}" ]; then
+    echo "pre-commit: staged encrypted file and sidecar are out of sync: ${enc_path}" >&2
+    exit 1
+  fi
+done