Initial cloudflared gitops app

scripts/ci/check-sops-sync

@@ -0,0 +1,77 @@
+#!/usr/bin/env zsh
+
+set -eu
+
+for cmd in git sops openssl; do
+  if ! command -v "${cmd}" >/dev/null 2>&1; then
+    echo "check-sops-sync: required command missing: ${cmd}" >&2
+    exit 1
+  fi
+done
+
+if [ -z "${SOPS_SYNC_HMAC_KEY:-}" ]; then
+  echo "check-sops-sync: 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 "check-sops-sync: missing helper ${regex_script}" >&2
+  exit 1
+fi
+
+if [ ! -f "${lib_script}" ]; then
+  echo "check-sops-sync: missing helper ${lib_script}" >&2
+  exit 1
+fi
+
+. "${lib_script}"
+
+regexes=("${(@f)$("${regex_script}")}")
+fail=0
+
+while IFS= read -r tracked_path; do
+  [ -n "${tracked_path}" ] || continue
+  [[ "${tracked_path}" == *.enc.* ]] || continue
+
+  if ! matches_any_rule "${tracked_path}" "${regexes[@]}"; then
+    continue
+  fi
+
+  sidecar_path=$(hmac_sidecar_for_enc "${tracked_path}")
+
+  if ! git ls-files --error-unmatch -- "${sidecar_path}" >/dev/null 2>&1; then
+    echo "check-sops-sync: missing sync sidecar for ${tracked_path}" >&2
+    fail=1
+    continue
+  fi
+
+  if ! is_sops_encrypted_file "${tracked_path}"; then
+    echo "check-sops-sync: file is not valid SOPS-encrypted content: ${tracked_path}" >&2
+    fail=1
+    continue
+  fi
+
+  sidecar_value=$(read_sidecar "${sidecar_path}" || true)
+  if [ -z "${sidecar_value}" ]; then
+    echo "check-sops-sync: sidecar is empty: ${sidecar_path}" >&2
+    fail=1
+    continue
+  fi
+
+  if ! computed_hmac=$(decrypt_enc_to_plain "${tracked_path}" | compute_hmac_for_stdin); then
+    echo "check-sops-sync: failed to decrypt ${tracked_path}" >&2
+    fail=1
+    continue
+  fi
+
+  if [ "${computed_hmac}" != "${sidecar_value}" ]; then
+    echo "check-sops-sync: decrypted plaintext HMAC does not match sidecar for ${tracked_path}" >&2
+    fail=1
+  fi
+done < <(git ls-files)
+
+exit "${fail}"