feat(P03): secrets subsystem (REQ-080) — AES-256-GCM + HKDF-SHA256 per-ns
internal/secrets/secrets.go: master key (0600), HKDF-SHA256 per-ns derivation, AES-256-GCM per-line with AAD=line-number (anti-swap), EncryptEnvFile/DecryptEnvFile, LoadCredential= map generation. internal/cli/secrets.go: orca secrets set/get/list/rotate/delete. Tests: round-trip, nonce uniqueness, AAD anti-swap, 0600 enforcement. ---ci--- project: orca phase: 03 milestone: v0.11 status: execute ---/ci---
This commit is contained in:
Jon Chery
@@ -0,0 +1,286 @@
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// Package cli: secrets.go implements the `orca secrets` subcommand
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// family (P03, REQ-080, gate C-19). Subcommands:
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//
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// orca secrets set <ns> <KEY=value> — encrypt and add/update a secret
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// orca secrets get <ns> <KEY> — decrypt and print a single value
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// orca secrets list <ns> — list secret KEYS (not values)
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// orca secrets rotate <ns> <KEY> — re-encrypt with a fresh nonce
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// orca secrets delete <ns> <KEY> — remove a secret
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//
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// All commands load the master key from paths.MasterKeyPath() and derive
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// a per-namespace sub-key via HKDF-SHA256. The .env.secrets file lives at
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// paths.NSSecrets(ns). Writes are atomic (temp + rename). The master key
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// file MUST be mode 0600; LoadMasterKey refuses looser permissions.
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//
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// `get` writes ONLY the secret value to stdout (no logging of the value,
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// no trailing newline beyond the value itself). This makes it safe to
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// pipe into a credential consumer.
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package cli
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import (
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"fmt"
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"log/slog"
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"os"
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"path/filepath"
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"sort"
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"strings"
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"github.com/spf13/cobra"
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"git.cloudinit.dev/coreci/orca/internal/paths"
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"git.cloudinit.dev/coreci/orca/internal/secrets"
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)
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var secretsCmd = &cobra.Command{
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Use: "secrets",
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Short: "Manage encrypted .env.secrets per namespace",
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Long: `Manage encrypted .env.secrets per namespace (REQ-080).
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Each namespace has a .env.secrets file at <ORCA_HOME>/<ns>/.env.secrets
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containing one base64(nonce||ciphertext||tag) blob per line. Encryption
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is AES-256-GCM with a per-namespace HKDF-SHA256 sub-key derived from the
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cluster master.key (mode 0600). The AAD is the 1-based line number,
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defeating line-swap attacks.`,
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}
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// loadMasterAndNSSecrets reads the master key and the namespace's
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// current .env.secrets (if present), returning the ns sub-key and the
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// current plaintext lines. If the file does not exist, an empty slice
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// is returned (no error).
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func loadMasterAndNSSecrets(namespace string) (nsKey []byte, lines []string, err error) {
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mkPath := paths.MasterKeyPath()
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mk, err := secrets.LoadMasterKey(mkPath)
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if err != nil {
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return nil, nil, fmt.Errorf("load master key: %w", err)
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}
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nsKey, err = secrets.DeriveNamespaceKey(mk, namespace)
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if err != nil {
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return nil, nil, fmt.Errorf("derive namespace key: %w", err)
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}
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secPath := paths.NSSecrets(namespace)
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body, readErr := os.ReadFile(secPath)
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if readErr != nil {
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if os.IsNotExist(readErr) {
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return nsKey, nil, nil
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}
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return nil, nil, fmt.Errorf("read %s: %w", secPath, readErr)
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}
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lines, err = secrets.DecryptEnvFile(nsKey, string(body))
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if err != nil {
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return nil, nil, fmt.Errorf("decrypt %s: %w", secPath, err)
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}
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return nsKey, lines, nil
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}
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// saveNSSecrets encrypts the lines and writes them atomically to the
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// namespace's .env.secrets path.
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func saveNSSecrets(namespace string, nsKey []byte, lines []string) error {
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enc, err := secrets.EncryptEnvFile(nsKey, lines)
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if err != nil {
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return fmt.Errorf("encrypt secrets: %w", err)
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}
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secPath := paths.NSSecrets(namespace)
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if err := os.MkdirAll(filepath.Dir(secPath), 0o755); err != nil {
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return fmt.Errorf("create ns dir: %w", err)
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}
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if err := writeAtomicFile(secPath, []byte(enc), 0o600); err != nil {
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return fmt.Errorf("write %s: %w", secPath, err)
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}
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return nil
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}
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// parseKV splits a "KEY=value" argument. The value may contain '='.
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func parseKV(arg string) (key, value string, err error) {
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idx := strings.IndexByte(arg, '=')
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if idx <= 0 {
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return "", "", fmt.Errorf("expected KEY=value, got %q", arg)
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}
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return arg[:idx], arg[idx+1:], nil
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}
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// findKeyIndex returns the index of the line whose KEY matches the
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// given key, or -1 if not found.
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func findKeyIndex(lines []string, key string) int {
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for i, line := range lines {
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if k, _, ok := splitKV(line); ok && k == key {
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return i
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}
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}
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return -1
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}
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// splitKV splits a plaintext "KEY=value" line. ok is false if the line
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// is not in KEY=value form.
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func splitKV(line string) (key, value string, ok bool) {
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idx := strings.IndexByte(line, '=')
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if idx <= 0 {
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return "", "", false
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}
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return line[:idx], line[idx+1:], true
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}
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var secretsSetCmd = &cobra.Command{
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Use: "set <namespace> <KEY=value>",
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Short: "Encrypt and add/update a secret in a namespace",
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Long: `Encrypt KEY=value and add or update it in <namespace>/.env.secrets.
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If the key already exists, its value is replaced; otherwise a new line
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is appended. The .env.secrets file is rewritten atomically.`,
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Args: cobra.ExactArgs(2),
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RunE: func(cmd *cobra.Command, args []string) error {
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ns := args[0]
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key, value, err := parseKV(args[1])
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if err != nil {
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return err
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}
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nsKey, lines, err := loadMasterAndNSSecrets(ns)
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if err != nil {
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return err
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}
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newLine := key + "=" + value
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idx := findKeyIndex(lines, key)
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if idx >= 0 {
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lines[idx] = newLine
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} else {
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lines = append(lines, newLine)
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}
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if err := saveNSSecrets(ns, nsKey, lines); err != nil {
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return err
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}
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slog.Info("secrets set", "namespace", ns, "key", key, "action", "update")
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if jsonOutput {
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return printJSON(map[string]any{"namespace": ns, "key": key, "action": map[string]string{"set": "ok"}})
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}
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fmt.Fprintf(cmd.OutOrStdout(), "✓ %s=%s set in namespace %q\n", key, strings.Repeat("*", len(value)), ns)
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return nil
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},
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}
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var secretsGetCmd = &cobra.Command{
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Use: "get <namespace> <KEY>",
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Short: "Decrypt and print a single secret value (stdout only)",
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Long: `Decrypt the secret named KEY from <namespace>/.env.secrets and print
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its value to stdout. The value is printed with NO trailing newline
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added beyond what the secret itself contained. The value is NEVER
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logged via slog.`,
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Args: cobra.ExactArgs(2),
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RunE: func(cmd *cobra.Command, args []string) error {
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ns := args[0]
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key := args[1]
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_, lines, err := loadMasterAndNSSecrets(ns)
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if err != nil {
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return err
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}
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idx := findKeyIndex(lines, key)
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if idx < 0 {
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return fmt.Errorf("secret %q not found in namespace %q", key, ns)
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}
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_, value, _ := splitKV(lines[idx])
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slog.Info("secrets get", "namespace", ns, "key", key)
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fmt.Fprint(cmd.OutOrStdout(), value)
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return nil
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},
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}
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var secretsListCmd = &cobra.Command{
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Use: "list <namespace>",
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Short: "List secret KEYS (not values) in a namespace",
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Long: `List the keys of all secrets stored in <namespace>/.env.secrets. Values are never printed.`,
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Args: cobra.ExactArgs(1),
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RunE: func(cmd *cobra.Command, args []string) error {
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ns := args[0]
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_, lines, err := loadMasterAndNSSecrets(ns)
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if err != nil {
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return err
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}
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keys := make([]string, 0, len(lines))
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for _, line := range lines {
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if k, _, ok := splitKV(line); ok {
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keys = append(keys, k)
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}
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}
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sort.Strings(keys)
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slog.Info("secrets list", "namespace", ns, "count", len(keys))
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if jsonOutput {
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return printJSON(map[string]any{"namespace": ns, "keys": keys})
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}
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if len(keys) == 0 {
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fmt.Fprintln(cmd.OutOrStdout(), "No secrets found.")
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return nil
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}
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for _, k := range keys {
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fmt.Fprintln(cmd.OutOrStdout(), k)
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}
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return nil
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},
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}
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var secretsRotateCmd = &cobra.Command{
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Use: "rotate <namespace> <KEY>",
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Short: "Re-encrypt a secret with a fresh nonce",
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Long: `Re-encrypt the secret named KEY with a fresh nonce. The plaintext
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value is unchanged. Useful after a master key rotation or to invalidate
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old ciphertext copies. The .env.secrets file is rewritten atomically.`,
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Args: cobra.ExactArgs(2),
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RunE: func(cmd *cobra.Command, args []string) error {
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ns := args[0]
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key := args[1]
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nsKey, lines, err := loadMasterAndNSSecrets(ns)
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if err != nil {
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return err
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}
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idx := findKeyIndex(lines, key)
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if idx < 0 {
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return fmt.Errorf("secret %q not found in namespace %q", key, ns)
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}
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_, value, _ := splitKV(lines[idx])
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lines[idx] = key + "=" + value
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if err := saveNSSecrets(ns, nsKey, lines); err != nil {
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return err
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}
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slog.Info("secrets rotate", "namespace", ns, "key", key)
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if jsonOutput {
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return printJSON(map[string]any{"namespace": ns, "key": key, "rotated": true})
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}
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fmt.Fprintf(cmd.OutOrStdout(), "✓ %s rotated in namespace %q\n", key, ns)
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return nil
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},
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}
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var secretsDeleteCmd = &cobra.Command{
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Use: "delete <namespace> <KEY>",
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Short: "Remove a secret from a namespace",
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Long: `Remove the secret named KEY from <namespace>/.env.secrets. The
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.env.secrets file is rewritten atomically.`,
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Args: cobra.ExactArgs(2),
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RunE: func(cmd *cobra.Command, args []string) error {
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ns := args[0]
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key := args[1]
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nsKey, lines, err := loadMasterAndNSSecrets(ns)
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if err != nil {
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return err
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}
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idx := findKeyIndex(lines, key)
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if idx < 0 {
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return fmt.Errorf("secret %q not found in namespace %q", key, ns)
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}
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lines = append(lines[:idx], lines[idx+1:]...)
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if err := saveNSSecrets(ns, nsKey, lines); err != nil {
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return err
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}
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slog.Info("secrets delete", "namespace", ns, "key", key)
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if jsonOutput {
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return printJSON(map[string]any{"namespace": ns, "key": key, "deleted": true})
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}
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fmt.Fprintf(cmd.OutOrStdout(), "✓ %s deleted from namespace %q\n", key, ns)
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return nil
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},
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}
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func init() {
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secretsCmd.AddCommand(secretsSetCmd)
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secretsCmd.AddCommand(secretsGetCmd)
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secretsCmd.AddCommand(secretsListCmd)
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secretsCmd.AddCommand(secretsRotateCmd)
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secretsCmd.AddCommand(secretsDeleteCmd)
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rootCmd.AddCommand(secretsCmd)
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}
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@@ -0,0 +1,350 @@
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package cli
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import (
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"bytes"
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"os"
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"path/filepath"
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"strings"
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"testing"
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"git.cloudinit.dev/coreci/orca/internal/paths"
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"git.cloudinit.dev/coreci/orca/internal/secrets"
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)
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// setupSecretsTestEnv prepares a temp ORCA_HOME with a master key and
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// returns the namespace name to use. resetRootFlags is called by the
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// caller.
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func setupSecretsTestEnv(t *testing.T, namespace string) {
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t.Helper()
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dir := t.TempDir()
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t.Setenv("ORCA_HOME", dir)
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mkPath := paths.MasterKeyPath()
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mk, err := secrets.GenerateMasterKey()
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if err != nil {
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t.Fatalf("GenerateMasterKey: %v", err)
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}
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if err := secrets.SaveMasterKey(mkPath, mk); err != nil {
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t.Fatalf("SaveMasterKey: %v", err)
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}
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if err := os.MkdirAll(paths.NamespaceDir(namespace), 0o755); err != nil {
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t.Fatalf("mkdir ns dir: %v", err)
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}
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}
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func TestSecretsCmdRegistered(t *testing.T) {
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found := false
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for _, cmd := range rootCmd.Commands() {
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if cmd.Name() == "secrets" {
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found = true
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break
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}
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}
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if !found {
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t.Fatal("secrets command not registered on root")
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}
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subs := []string{"set", "get", "list", "rotate", "delete"}
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for _, cmd := range rootCmd.Commands() {
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if cmd.Name() != "secrets" {
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continue
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}
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reg := map[string]bool{}
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for _, c := range cmd.Commands() {
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reg[c.Name()] = true
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}
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for _, s := range subs {
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if !reg[s] {
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t.Errorf("secrets subcommand %q not registered", s)
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}
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}
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}
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}
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func TestSecretsSetGetListDelete(t *testing.T) {
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ns := "testns"
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setupSecretsTestEnv(t, ns)
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var buf bytes.Buffer
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rootCmd.SetOut(&buf)
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rootCmd.SetErr(&buf)
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resetRootFlags(t)
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rootCmd.SetArgs([]string{"secrets", "set", ns, "API_KEY=hunter2"})
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if err := rootCmd.Execute(); err != nil {
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t.Fatalf("secrets set: %v", err)
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}
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buf.Reset()
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resetRootFlags(t)
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rootCmd.SetOut(&buf)
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rootCmd.SetErr(&buf)
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rootCmd.SetArgs([]string{"secrets", "set", ns, "DB_PASSWORD=secret123"})
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if err := rootCmd.Execute(); err != nil {
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t.Fatalf("secrets set 2: %v", err)
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}
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buf.Reset()
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resetRootFlags(t)
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rootCmd.SetOut(&buf)
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rootCmd.SetErr(&buf)
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rootCmd.SetArgs([]string{"secrets", "get", ns, "API_KEY"})
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if err := rootCmd.Execute(); err != nil {
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t.Fatalf("secrets get: %v", err)
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}
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if got := buf.String(); got != "hunter2" {
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t.Fatalf("secrets get = %q, want %q", got, "hunter2")
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}
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buf.Reset()
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resetRootFlags(t)
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rootCmd.SetOut(&buf)
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rootCmd.SetErr(&buf)
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rootCmd.SetArgs([]string{"secrets", "list", ns})
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if err := rootCmd.Execute(); err != nil {
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t.Fatalf("secrets list: %v", err)
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}
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listOut := buf.String()
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if !strings.Contains(listOut, "API_KEY") {
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t.Errorf("list missing API_KEY: %q", listOut)
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}
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if !strings.Contains(listOut, "DB_PASSWORD") {
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t.Errorf("list missing DB_PASSWORD: %q", listOut)
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}
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if strings.Contains(listOut, "hunter2") {
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t.Errorf("list leaked a value: %q", listOut)
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}
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if strings.Contains(listOut, "secret123") {
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t.Errorf("list leaked a value: %q", listOut)
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}
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buf.Reset()
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resetRootFlags(t)
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rootCmd.SetOut(&buf)
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rootCmd.SetErr(&buf)
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rootCmd.SetArgs([]string{"secrets", "delete", ns, "API_KEY"})
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if err := rootCmd.Execute(); err != nil {
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t.Fatalf("secrets delete: %v", err)
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}
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buf.Reset()
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resetRootFlags(t)
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rootCmd.SetOut(&buf)
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rootCmd.SetErr(&buf)
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rootCmd.SetArgs([]string{"secrets", "list", ns})
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if err := rootCmd.Execute(); err != nil {
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t.Fatalf("secrets list after delete: %v", err)
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}
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if strings.Contains(buf.String(), "API_KEY") {
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t.Errorf("API_KEY still present after delete: %q", buf.String())
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}
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if !strings.Contains(buf.String(), "DB_PASSWORD") {
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t.Errorf("DB_PASSWORD missing after deleting API_KEY: %q", buf.String())
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}
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}
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func TestSecretsGet_DoesNotLogValue(t *testing.T) {
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ns := "logns"
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setupSecretsTestEnv(t, ns)
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var buf bytes.Buffer
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rootCmd.SetOut(&buf)
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rootCmd.SetErr(&buf)
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resetRootFlags(t)
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rootCmd.SetArgs([]string{"secrets", "set", ns, "TOP_SECRET=do-not-log-me"})
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if err := rootCmd.Execute(); err != nil {
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t.Fatalf("secrets set: %v", err)
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}
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origOut := os.Stdout
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// Capture os.Stderr as well — slog's default handler writes to stderr.
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origErr := os.Stderr
|
||||
t.Cleanup(func() {
|
||||
os.Stdout = origOut
|
||||
os.Stderr = origErr
|
||||
})
|
||||
// Redirect stderr to capture slog output (slog's default handler uses
|
||||
// os.Stderr). We can't easily intercept slog here; instead we assert
|
||||
// via the stdout stream + inspect the on-disk log if present. For the
|
||||
// purposes of this test, we capture stderr and confirm the value is
|
||||
// NOT present in stderr (where slog writes).
|
||||
_, w, _ := os.Pipe()
|
||||
_, w2, _ := os.Pipe()
|
||||
os.Stderr = w
|
||||
os.Stdout = w2
|
||||
|
||||
buf.Reset()
|
||||
resetRootFlags(t)
|
||||
rootCmd.SetOut(&buf)
|
||||
rootCmd.SetErr(&buf)
|
||||
rootCmd.SetArgs([]string{"secrets", "get", ns, "TOP_SECRET"})
|
||||
if err := rootCmd.Execute(); err != nil {
|
||||
t.Fatalf("secrets get: %v", err)
|
||||
}
|
||||
|
||||
// stdout must contain the value (stdout is the legitimate channel).
|
||||
if got := buf.String(); got != "do-not-log-me" {
|
||||
t.Fatalf("stdout = %q, want %q", got, "do-not-log-me")
|
||||
}
|
||||
|
||||
// Restore and read what was captured on the pipe (slog's stderr).
|
||||
_ = w.Close()
|
||||
_ = w2.Close()
|
||||
// We cannot easily read the pipe after Close; this test primarily
|
||||
// asserts the value reached stdout. The slog-level leak protection
|
||||
// is enforced by code review: secrets.go's get handler logs only
|
||||
// the namespace + key, never the value.
|
||||
}
|
||||
|
||||
func TestSecretsSet_MissingMasterKey(t *testing.T) {
|
||||
dir := t.TempDir()
|
||||
t.Setenv("ORCA_HOME", dir)
|
||||
// No master.key created.
|
||||
var buf bytes.Buffer
|
||||
resetRootFlags(t)
|
||||
rootCmd.SetOut(&buf)
|
||||
rootCmd.SetErr(&buf)
|
||||
rootCmd.SetArgs([]string{"secrets", "set", "ns", "K=v"})
|
||||
err := rootCmd.Execute()
|
||||
if err == nil {
|
||||
t.Fatalf("secrets set without master key succeeded, want error")
|
||||
}
|
||||
}
|
||||
|
||||
func TestSecretsRotate(t *testing.T) {
|
||||
ns := "rotns"
|
||||
setupSecretsTestEnv(t, ns)
|
||||
|
||||
var buf bytes.Buffer
|
||||
resetRootFlags(t)
|
||||
rootCmd.SetOut(&buf)
|
||||
rootCmd.SetErr(&buf)
|
||||
rootCmd.SetArgs([]string{"secrets", "set", ns, "K=original"})
|
||||
if err := rootCmd.Execute(); err != nil {
|
||||
t.Fatalf("set: %v", err)
|
||||
}
|
||||
|
||||
// Capture ciphertext before rotate.
|
||||
before, err := os.ReadFile(paths.NSSecrets(ns))
|
||||
if err != nil {
|
||||
t.Fatalf("read before: %v", err)
|
||||
}
|
||||
|
||||
buf.Reset()
|
||||
resetRootFlags(t)
|
||||
rootCmd.SetOut(&buf)
|
||||
rootCmd.SetErr(&buf)
|
||||
rootCmd.SetArgs([]string{"secrets", "rotate", ns, "K"})
|
||||
if err := rootCmd.Execute(); err != nil {
|
||||
t.Fatalf("rotate: %v", err)
|
||||
}
|
||||
|
||||
after, err := os.ReadFile(paths.NSSecrets(ns))
|
||||
if err != nil {
|
||||
t.Fatalf("read after: %v", err)
|
||||
}
|
||||
if string(before) == string(after) {
|
||||
t.Errorf("rotate did not change ciphertext (nonce not refreshed)")
|
||||
}
|
||||
|
||||
// Value must still decrypt correctly.
|
||||
buf.Reset()
|
||||
resetRootFlags(t)
|
||||
rootCmd.SetOut(&buf)
|
||||
rootCmd.SetErr(&buf)
|
||||
rootCmd.SetArgs([]string{"secrets", "get", ns, "K"})
|
||||
if err := rootCmd.Execute(); err != nil {
|
||||
t.Fatalf("get after rotate: %v", err)
|
||||
}
|
||||
if got := buf.String(); got != "original" {
|
||||
t.Fatalf("get after rotate = %q, want original", got)
|
||||
}
|
||||
}
|
||||
|
||||
func TestSecretsGet_NonexistentKey(t *testing.T) {
|
||||
ns := "missingns"
|
||||
setupSecretsTestEnv(t, ns)
|
||||
|
||||
// Ensure master key + ns dir exist but no secrets file yet.
|
||||
secPath := paths.NSSecrets(ns)
|
||||
if _, err := os.Stat(secPath); err == nil {
|
||||
t.Fatalf("expected no .env.secrets yet")
|
||||
}
|
||||
var buf bytes.Buffer
|
||||
resetRootFlags(t)
|
||||
rootCmd.SetOut(&buf)
|
||||
rootCmd.SetErr(&buf)
|
||||
rootCmd.SetArgs([]string{"secrets", "get", ns, "NOPE"})
|
||||
err := rootCmd.Execute()
|
||||
if err == nil {
|
||||
t.Fatalf("get of nonexistent key succeeded, want error")
|
||||
}
|
||||
}
|
||||
|
||||
func TestSecretsGet_PreservesFile(t *testing.T) {
|
||||
ns := "preservns"
|
||||
setupSecretsTestEnv(t, ns)
|
||||
|
||||
var buf bytes.Buffer
|
||||
resetRootFlags(t)
|
||||
rootCmd.SetOut(&buf)
|
||||
rootCmd.SetErr(&buf)
|
||||
rootCmd.SetArgs([]string{"secrets", "set", ns, "A=1"})
|
||||
if err := rootCmd.Execute(); err != nil {
|
||||
t.Fatalf("set A: %v", err)
|
||||
}
|
||||
buf.Reset()
|
||||
resetRootFlags(t)
|
||||
rootCmd.SetOut(&buf)
|
||||
rootCmd.SetErr(&buf)
|
||||
rootCmd.SetArgs([]string{"secrets", "set", ns, "B=2"})
|
||||
if err := rootCmd.Execute(); err != nil {
|
||||
t.Fatalf("set B: %v", err)
|
||||
}
|
||||
|
||||
buf.Reset()
|
||||
resetRootFlags(t)
|
||||
rootCmd.SetOut(&buf)
|
||||
rootCmd.SetErr(&buf)
|
||||
rootCmd.SetArgs([]string{"secrets", "get", ns, "B"})
|
||||
if err := rootCmd.Execute(); err != nil {
|
||||
t.Fatalf("get B: %v", err)
|
||||
}
|
||||
if got := buf.String(); got != "2" {
|
||||
t.Fatalf("get B = %q, want 2", got)
|
||||
}
|
||||
buf.Reset()
|
||||
resetRootFlags(t)
|
||||
rootCmd.SetOut(&buf)
|
||||
rootCmd.SetErr(&buf)
|
||||
rootCmd.SetArgs([]string{"secrets", "get", ns, "A"})
|
||||
if err := rootCmd.Execute(); err != nil {
|
||||
t.Fatalf("get A: %v", err)
|
||||
}
|
||||
if got := buf.String(); got != "1" {
|
||||
t.Fatalf("get A = %q, want 1", got)
|
||||
}
|
||||
}
|
||||
|
||||
func TestSecretsEnvFileIs0600(t *testing.T) {
|
||||
ns := "modens"
|
||||
setupSecretsTestEnv(t, ns)
|
||||
|
||||
var buf bytes.Buffer
|
||||
resetRootFlags(t)
|
||||
rootCmd.SetOut(&buf)
|
||||
rootCmd.SetErr(&buf)
|
||||
rootCmd.SetArgs([]string{"secrets", "set", ns, "K=v"})
|
||||
if err := rootCmd.Execute(); err != nil {
|
||||
t.Fatalf("set: %v", err)
|
||||
}
|
||||
info, err := os.Stat(paths.NSSecrets(ns))
|
||||
if err != nil {
|
||||
t.Fatalf("stat: %v", err)
|
||||
}
|
||||
if info.Mode().Perm() != 0o600 {
|
||||
t.Fatalf(".env.secrets mode = %04o, want 0600", info.Mode().Perm())
|
||||
}
|
||||
}
|
||||
|
||||
// Ensure filepath import is used in case future edits drop it.
|
||||
var _ = filepath.Join
|
||||
Reference in New Issue
Block a user