| 1 | // 🤖 `eleven vault` — the CLI end of the Vault app (docs/locked-vaults.md). |
| 2 | // The terminal is just another E2EE member: it folds the same vault events the |
| 3 | // web reducer folds (internal/vault, pinned by test/event-vectors/vault.json) |
| 4 | // and emits the same events the web emits. On a LOCKED vault, values seal to |
| 5 | // the vault public key — so `set` never needs an unlock — and `get` opens the |
| 6 | // member's keychain wrap behind Touch ID (vaultkek_darwin.go; other builds |
| 7 | // refuse loudly). |
| 8 | // |
| 9 | // Secret values never ride argv (visible in `ps`/shell history): `set` reads a |
| 10 | // hidden prompt, a pipe, or --from-file. `get` prints the raw value to stdout |
| 11 | // for command substitution; everything else prints to stderr. |
| 12 | package main |
| 13 | |
| 14 | import ( |
| 15 | "crypto/rand" |
| 16 | "encoding/hex" |
| 17 | "flag" |
| 18 | "fmt" |
| 19 | "io" |
| 20 | "os" |
| 21 | "sort" |
| 22 | "strings" |
| 23 | "unicode/utf8" |
| 24 | |
| 25 | "golang.org/x/term" |
| 26 | |
| 27 | "lchat/internal/client" |
| 28 | "lchat/internal/e2ee" |
| 29 | "lchat/internal/vault" |
| 30 | ) |
| 31 | |
| 32 | func runVault(spaces []*space, args []string) { |
| 33 | if len(args) == 0 { |
| 34 | vaultUsage() |
| 35 | os.Exit(2) |
| 36 | } |
| 37 | verb, rest := args[0], args[1:] |
| 38 | fs := flag.NewFlagSet("eleven vault "+verb, flag.ExitOnError) |
| 39 | chat := fs.String("chat", "", "target a group chat's shared Vault (name substring, like `eleven chat`)") |
| 40 | fromFile := fs.String("from-file", "", "`set`: read the value from a file (e.g. an .env) instead of prompting") |
| 41 | label := fs.String("label", "", "`enroll`: how this key is listed in the vault's Access panel") |
| 42 | dbPath := fs.String("db", "", "read a raw instance DB file OFFLINE (a copy of /data/<host>.db or an S3 replica restore) — no server involved; list/get only") |
| 43 | outFile := fs.String("o", "", "`get`: write the value to this file (mode 600) instead of stdout — the deploy/DR-safe form (#997)") |
| 44 | fs.Usage = vaultUsage |
| 45 | _ = fs.Parse(rest) |
| 46 | rest = fs.Args() |
| 47 | |
| 48 | // Offline mode is deliberately read-only: writes belong on the live thread. |
| 49 | if *dbPath != "" && verb != "list" && verb != "get" { |
| 50 | die("only list and get work offline (-db) — %s needs the live space", verb) |
| 51 | } |
| 52 | opts := getOpts{outFile: *outFile} |
| 53 | |
| 54 | switch verb { |
| 55 | case "list": |
| 56 | if *dbPath != "" { |
| 57 | _, _, title, s := vaultOffline(spaces, *dbPath, *chat) |
| 58 | vaultList(title, s) |
| 59 | return |
| 60 | } |
| 61 | sp, tid, title := vaultTarget(spaces, *chat) |
| 62 | vaultList(title, foldVault(sp, tid)) |
| 63 | case "get": |
| 64 | if len(rest) != 1 { |
| 65 | die("usage: eleven vault get [-chat c] [-db f] [-o file] <name>") |
| 66 | } |
| 67 | if *dbPath != "" { |
| 68 | host, tid, _, s := vaultOffline(spaces, *dbPath, *chat) |
| 69 | vaultGet(host, tid, s, rest[0], opts) |
| 70 | return |
| 71 | } |
| 72 | sp, tid, _ := vaultTarget(spaces, *chat) |
| 73 | vaultGet(spaceHost(sp.sess), tid, foldVault(sp, tid), rest[0], opts) |
| 74 | case "set": |
| 75 | if len(rest) != 1 { |
| 76 | die("usage: eleven vault set [-chat c] [-from-file f] <name>") |
| 77 | } |
| 78 | sp, tid, _ := vaultTarget(spaces, *chat) |
| 79 | vaultSet(sp, tid, foldVault(sp, tid), rest[0], *fromFile) |
| 80 | case "enroll": |
| 81 | sp, tid, _ := vaultTarget(spaces, *chat) |
| 82 | vaultEnroll(sp, tid, foldVault(sp, tid), *label) |
| 83 | case "give": |
| 84 | who := strings.Join(rest, " ") |
| 85 | sp, tid, _ := vaultTarget(spaces, *chat) |
| 86 | vaultGive(sp, tid, foldVault(sp, tid), who) |
| 87 | default: |
| 88 | fmt.Fprintf(os.Stderr, "eleven: unknown vault command %q\n\n", verb) |
| 89 | vaultUsage() |
| 90 | os.Exit(2) |
| 91 | } |
| 92 | } |
| 93 | |
| 94 | func vaultUsage() { |
| 95 | fmt.Fprint(os.Stderr, `usage: eleven vault <command> [flags] |
| 96 | |
| 97 | commands: |
| 98 | list names, who added them, and the vault's lock state |
| 99 | — never the values |
| 100 | get [-o f] <name> print one value (a locked vault asks for Touch ID); |
| 101 | -o writes it to a mode-600 file instead of stdout |
| 102 | set [-from-file f] <name> |
| 103 | store/overwrite a value — hidden prompt, piped |
| 104 | stdin, or a file; on a locked vault it seals to the |
| 105 | vault key with no unlock needed |
| 106 | enroll [-label s] set up THIS machine's key from your handoff — the |
| 107 | vault key was sealed to you when the vault was locked |
| 108 | (or given to you); mints a Touch ID-guarded key. No |
| 109 | approval: being in the thread is the entitlement. |
| 110 | give <who> give a thread member (who has no key yet) access — |
| 111 | seals the vault key to them (needs your Touch ID key) |
| 112 | |
| 113 | flags: |
| 114 | -chat <needle> target a group chat's shared Vault instead of your |
| 115 | personal one (substring match, like eleven chat) |
| 116 | -db <file> OFFLINE list/get from a raw instance DB — a copy of |
| 117 | /data/<host>.db or an S3 replica restore. No server |
| 118 | anywhere. |
| 119 | -o <file> get: write the value to a mode-600 file, never |
| 120 | stdout — the deploy/DR-safe form (use this in any |
| 121 | logged or Claude-driven shell). |
| 122 | |
| 123 | Your personal Vault is the default target. Bare "get" prints to stdout for |
| 124 | VAR="$(eleven vault get name)"; NEVER use that form in a logged/Claude shell — |
| 125 | use -o. There is no passphrase back door: access is your enrolled keys — |
| 126 | lose them all and it's the other members (or a synced passkey) that let you |
| 127 | back in. |
| 128 | `) |
| 129 | } |
| 130 | |
| 131 | // vaultTarget picks the vault thread: an explicit -chat needle resolves like |
| 132 | // `eleven chat`; otherwise the member's personal Vault app-thread (there is at |
| 133 | // most one per space — the app id rides inside the encrypted name_blob, so |
| 134 | // only members can even tell which thread that is). |
| 135 | func vaultTarget(spaces []*space, chatNeedle string) (*space, string, string) { |
| 136 | if chatNeedle != "" { |
| 137 | st := resolveThread(spaces, chatNeedle) |
| 138 | return st.sp, st.t.ID, displayName(st.t) |
| 139 | } |
| 140 | var found []spaceThread |
| 141 | for _, st := range allThreads(spaces) { |
| 142 | if st.t.Kind == "self" && st.t.App == "vault" { |
| 143 | found = append(found, st) |
| 144 | } |
| 145 | } |
| 146 | switch len(found) { |
| 147 | case 1: |
| 148 | return found[0].sp, found[0].t.ID, displayName(found[0].t) |
| 149 | case 0: |
| 150 | die("no personal Vault yet — open the Vault app in the web app once, or target a group's vault with -chat") |
| 151 | default: |
| 152 | names := make([]string, len(found)) |
| 153 | for i, st := range found { |
| 154 | names[i] = spaceHost(st.sp.sess) |
| 155 | } |
| 156 | die("you have a personal Vault in several spaces (%s) — pick one with -chat '<space host>/vault'", strings.Join(names, ", ")) |
| 157 | } |
| 158 | panic("unreachable") |
| 159 | } |
| 160 | |
| 161 | func foldVault(sp *space, threadID string) vault.State { |
| 162 | events, err := sp.c.Events(threadID, "vault.") |
| 163 | if err != nil { |
| 164 | die("%v", err) |
| 165 | } |
| 166 | return vault.FoldAll(events) |
| 167 | } |
| 168 | |
| 169 | // vaultOffline is the -db path (docs/locked-vaults.md "Offline restore — the |
| 170 | // hard gate"): resolve and fold a vault from a raw instance DB file with no |
| 171 | // server anywhere. The identity comes from ~/.eleven exactly as online — the |
| 172 | // DB tells us which session file is a member (users.public_key); that |
| 173 | // session's private key unwraps the thread key; Touch ID still gates sealed |
| 174 | // values through the same keychain account the live path uses. |
| 175 | func vaultOffline(spaces []*space, dbPath, chatNeedle string) (host, threadID, title string, s vault.State) { |
| 176 | o, err := vault.OpenOffline(dbPath) |
| 177 | if err != nil { |
| 178 | die("%v", err) |
| 179 | } |
| 180 | defer o.Close() |
| 181 | type hit struct { |
| 182 | sp *space |
| 183 | uid string |
| 184 | } |
| 185 | var hits []hit |
| 186 | for _, sp := range spaces { |
| 187 | uid, err := o.UserID(sp.sess.UserPub) |
| 188 | if err != nil { |
| 189 | die("%v", err) |
| 190 | } |
| 191 | if uid != "" { |
| 192 | hits = append(hits, hit{sp, uid}) |
| 193 | } |
| 194 | } |
| 195 | switch len(hits) { |
| 196 | case 1: |
| 197 | // exactly one identity opens this DB — the normal case |
| 198 | case 0: |
| 199 | die("none of this terminal's identities are members of %s — its users table has no matching public key", dbPath) |
| 200 | default: |
| 201 | die("several identities match %s — scope to one with -session", dbPath) |
| 202 | } |
| 203 | sp, uid := hits[0].sp, hits[0].uid |
| 204 | threads, err := o.Threads(uid, sp.sess.UserPriv) |
| 205 | if err != nil { |
| 206 | die("%v", err) |
| 207 | } |
| 208 | needle := strings.ToLower(strings.TrimSpace(chatNeedle)) |
| 209 | var found []vault.OfflineThread |
| 210 | for _, t := range threads { |
| 211 | if needle == "" { |
| 212 | if t.Kind == "self" && t.App == "vault" { |
| 213 | found = append(found, t) |
| 214 | } |
| 215 | } else if strings.Contains(strings.ToLower(t.Name), needle) || t.ID == chatNeedle { |
| 216 | found = append(found, t) |
| 217 | } |
| 218 | } |
| 219 | switch len(found) { |
| 220 | case 1: |
| 221 | // fall through |
| 222 | case 0: |
| 223 | if needle == "" { |
| 224 | die("no personal Vault in %s — a group's vault needs -chat", dbPath) |
| 225 | } |
| 226 | die("no thread matches %q in %s", chatNeedle, dbPath) |
| 227 | default: |
| 228 | die("%q matches several threads in %s — be more specific", chatNeedle, dbPath) |
| 229 | } |
| 230 | t := found[0] |
| 231 | state, err := o.FoldVault(t.ID, t.Key) |
| 232 | if err != nil { |
| 233 | die("%v", err) |
| 234 | } |
| 235 | name := t.Name |
| 236 | if name == "" { |
| 237 | name = "Vault" |
| 238 | } |
| 239 | return spaceHost(sp.sess), t.ID, name + " (offline: " + dbPath + ")", state |
| 240 | } |
| 241 | |
| 242 | func vaultList(title string, s vault.State) { |
| 243 | lock := "not locked — values are E2EE to members, with no biometric gate" |
| 244 | if s.Keyring != nil { |
| 245 | // Count durable holders separately from members still holding a handoff |
| 246 | // (invited, not yet set up) — a `member` wrap can't open the vault yet. |
| 247 | durable, pending := 0, 0 |
| 248 | for _, w := range s.Keyring.Wraps { |
| 249 | if w.Kind == "member" { |
| 250 | pending++ |
| 251 | } else { |
| 252 | durable++ |
| 253 | } |
| 254 | } |
| 255 | keys := "1 key" |
| 256 | if durable != 1 { |
| 257 | keys = fmt.Sprintf("%d keys", durable) |
| 258 | } |
| 259 | lock = "LOCKED · " + keys |
| 260 | if pending == 1 { |
| 261 | lock += " · 1 invited, not yet set up" |
| 262 | } else if pending > 1 { |
| 263 | lock += fmt.Sprintf(" · %d invited, not yet set up", pending) |
| 264 | } |
| 265 | } |
| 266 | fmt.Fprintf(os.Stderr, "%s — %s\n", title, lock) |
| 267 | if len(s.Items) == 0 { |
| 268 | fmt.Fprintln(os.Stderr, "no secrets yet — `eleven vault set <name>` stores one") |
| 269 | return |
| 270 | } |
| 271 | items := append([]vault.Item(nil), s.Items...) |
| 272 | sort.Slice(items, func(i, j int) bool { return strings.ToLower(items[i].Name) < strings.ToLower(items[j].Name) }) |
| 273 | for _, it := range items { |
| 274 | marker := " " // plaintext (inside the E2EE thread) |
| 275 | if it.Sealed != "" { |
| 276 | marker = "🔒" |
| 277 | } else if s.Keyring != nil { |
| 278 | marker = "!" // a locked vault holding a stale unsealed value |
| 279 | } |
| 280 | line := fmt.Sprintf("%s %-28s added by %s %s", marker, clip(it.Name, 28), orSomeone(it.ByName), relTime(it.At/1000)) |
| 281 | if it.UpdatedAt > 0 { |
| 282 | line += fmt.Sprintf(" · updated by %s %s", orSomeone(it.UpdatedByName), relTime(it.UpdatedAt/1000)) |
| 283 | } |
| 284 | fmt.Println(line) |
| 285 | } |
| 286 | if s.Keyring != nil { |
| 287 | for _, w := range s.Keyring.Wraps { |
| 288 | if w.Kind == "member" { |
| 289 | fmt.Fprintf(os.Stderr, "· %s was given access but hasn't set up a key yet\n", orSomeone(w.Label)) |
| 290 | } |
| 291 | } |
| 292 | } |
| 293 | } |
| 294 | |
| 295 | // getOpts carries the `get` flags: outFile (write the value to a mode-600 file |
| 296 | // instead of stdout — the deploy/DR-safe form that keeps secrets out of shell |
| 297 | // history / a transcript, #997). |
| 298 | type getOpts struct { |
| 299 | outFile string |
| 300 | } |
| 301 | |
| 302 | func vaultGet(host, threadID string, s vault.State, name string, opts getOpts) { |
| 303 | it := s.FindItem(name) |
| 304 | if it == nil { |
| 305 | die("no secret named %q — `eleven vault list` shows what's there", name) |
| 306 | } |
| 307 | value := it.Value |
| 308 | if it.Sealed != "" { |
| 309 | priv := unlockVaultPriv(host, threadID, s) // Touch ID |
| 310 | var env struct { |
| 311 | V string `json:"v"` |
| 312 | } |
| 313 | if err := e2ee.OpenSealed(it.Sealed, priv, &env); err != nil { |
| 314 | die("%q won't open with this vault's key — it may have been sealed to an older one", name) |
| 315 | } |
| 316 | value = env.V |
| 317 | } |
| 318 | if opts.outFile != "" { |
| 319 | // Root-only (0600), never stdout — safe under a Claude-driven or logged |
| 320 | // shell, mirroring `sops -d`'s write-to-file. Overwrite deliberately. |
| 321 | if err := writeSecretFile(opts.outFile, value); err != nil { |
| 322 | die("%v", err) |
| 323 | } |
| 324 | fmt.Fprintf(os.Stderr, "Wrote %q to %s (mode 600).\n", name, opts.outFile) |
| 325 | return |
| 326 | } |
| 327 | // The raw value on stdout (everything else rides stderr), newline-terminated |
| 328 | // for the shell; $(…) substitution strips it. NEVER run this form in a |
| 329 | // Claude-driven / logged shell — use -o (#997). |
| 330 | if _, err := io.WriteString(os.Stdout, value); err != nil { |
| 331 | die("%v", err) |
| 332 | } |
| 333 | if !strings.HasSuffix(value, "\n") { |
| 334 | fmt.Println() |
| 335 | } |
| 336 | } |
| 337 | |
| 338 | // writeSecretFile writes a secret to path with mode 0600, forcing the perms even |
| 339 | // if the file pre-existed with looser ones. |
| 340 | func writeSecretFile(path, value string) error { |
| 341 | f, err := os.OpenFile(path, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0o600) |
| 342 | if err != nil { |
| 343 | return err |
| 344 | } |
| 345 | defer f.Close() |
| 346 | if err := f.Chmod(0o600); err != nil { |
| 347 | return err |
| 348 | } |
| 349 | _, err = io.WriteString(f, value) |
| 350 | return err |
| 351 | } |
| 352 | |
| 353 | func vaultSet(sp *space, threadID string, s vault.State, name, fromFile string) { |
| 354 | value := readSecretValue(name, fromFile) |
| 355 | if value == "" { |
| 356 | die("an empty value would be a confusing secret — nothing stored") |
| 357 | } |
| 358 | event := map[string]any{"aid": newID(), "label": name} |
| 359 | if s.Keyring != nil { |
| 360 | sealed, err := e2ee.SealForPub(s.Keyring.Pub, map[string]string{"v": value}) |
| 361 | if err != nil { |
| 362 | die("seal: %v", err) |
| 363 | } |
| 364 | event["sealed"] = sealed |
| 365 | } else { |
| 366 | event["value"] = value |
| 367 | } |
| 368 | verb := "Stored" |
| 369 | if existing := s.FindItem(name); existing != nil { |
| 370 | event["type"], event["id"] = "vault.change", existing.ID |
| 371 | verb = "Updated" |
| 372 | } else { |
| 373 | event["type"], event["id"] = "vault.add", newID() |
| 374 | } |
| 375 | if err := sp.c.SendEvent(threadID, event); err != nil { |
| 376 | die("%v", err) |
| 377 | } |
| 378 | if s.Keyring != nil { |
| 379 | fmt.Fprintf(os.Stderr, "%s %q — sealed to the vault key (reading it back needs an unlock).\n", verb, name) |
| 380 | } else { |
| 381 | fmt.Fprintf(os.Stderr, "%s %q. This vault isn't locked — values are E2EE to members, but any signed-in device can read them. Lock it from the app for the biometric gate.\n", verb, name) |
| 382 | } |
| 383 | } |
| 384 | |
| 385 | // vaultEnroll sets up THIS machine's key. The normal path: the vault key was |
| 386 | // sealed to my roster key when the vault was locked (or given to me), so I open |
| 387 | // that handoff with my session private key — no biometric, it's sealed to my |
| 388 | // identity — then re-wrap the vault key under this machine's Touch ID-guarded |
| 389 | // keychain KEK and enrol it. That drops my `member` handoff (the reducer keys |
| 390 | // the drop by uid). No approval: being in the thread is the entitlement. |
| 391 | func vaultEnroll(sp *space, threadID string, s vault.State, label string) { |
| 392 | if s.Keyring == nil { |
| 393 | die("this vault isn't locked yet — lock it in the app first (the first key is a passkey ceremony)") |
| 394 | } |
| 395 | me, err := sp.c.Me() |
| 396 | if err != nil { |
| 397 | die("%v", err) |
| 398 | } |
| 399 | var handoff *vault.Wrap |
| 400 | for i := range s.Keyring.Wraps { |
| 401 | w := &s.Keyring.Wraps[i] |
| 402 | if w.Kind == "keychain" && w.UID == me { |
| 403 | die("this machine's identity already has a key here — `eleven vault get <name>` reads values") |
| 404 | } |
| 405 | if w.Kind == "member" && w.UID == me { |
| 406 | handoff = w |
| 407 | } |
| 408 | } |
| 409 | if handoff == nil { |
| 410 | die("you don't have a handoff for this vault yet — ask someone already in to `eleven vault give %q` (or Give access in the app)", orSomeone(sp.sess.Name)) |
| 411 | } |
| 412 | // Open the handoff with my session (roster) private key → the vault key. |
| 413 | var env struct { |
| 414 | K string `json:"k"` |
| 415 | } |
| 416 | if err := e2ee.OpenSealed(handoff.Wrapped, sp.sess.UserPriv, &env); err != nil || env.K == "" { |
| 417 | die("couldn't open your vault key — ask someone in the vault to `give` you access again") |
| 418 | } |
| 419 | vaultPriv := env.K |
| 420 | // Integrity: the key must actually open this vault. If any value is sealed, it |
| 421 | // has to decrypt — a mismatched/hostile handoff fails HERE, before it's |
| 422 | // wrapped under the keychain. |
| 423 | for _, it := range s.Items { |
| 424 | if it.Sealed != "" { |
| 425 | var probe struct { |
| 426 | V string `json:"v"` |
| 427 | } |
| 428 | if err := e2ee.OpenSealed(it.Sealed, vaultPriv, &probe); err != nil { |
| 429 | die("that key doesn't match this vault — ask for access again") |
| 430 | } |
| 431 | break |
| 432 | } |
| 433 | } |
| 434 | if label == "" { |
| 435 | host, _ := os.Hostname() |
| 436 | label = strings.TrimSpace(sp.sess.Name + " — CLI @ " + host) |
| 437 | } |
| 438 | kek, err := vaultKEK(kekAccount(spaceHost(sp.sess), threadID), true) |
| 439 | if err != nil { |
| 440 | die("%v", err) |
| 441 | } |
| 442 | wrapped, err := wrapUnderKEK(kek, vaultPriv) |
| 443 | if err != nil { |
| 444 | die("%v", err) |
| 445 | } |
| 446 | err = sp.c.SendEvent(threadID, map[string]any{ |
| 447 | "type": "vault.enroll", "aid": newID(), |
| 448 | "wrap": map[string]any{"id": newID(), "kind": "keychain", "uid": me, "label": label, "wrapped": wrapped}, |
| 449 | }) |
| 450 | if err != nil { |
| 451 | die("%v", err) |
| 452 | } |
| 453 | fmt.Fprintln(os.Stderr, "You're in — this machine now unlocks the vault with Touch ID (`eleven vault get <name>`).") |
| 454 | } |
| 455 | |
| 456 | // vaultGive hands a thread member (who has no key yet) access: unlock the vault |
| 457 | // key with this machine's keychain (one Touch ID), then seal it to that member's |
| 458 | // roster key as a `member` handoff — which they turn into their own key with |
| 459 | // `eleven vault enroll` (or Set up your passkey in the app). An insider GIVING, |
| 460 | // never an outsider asking. |
| 461 | func vaultGive(sp *space, threadID string, s vault.State, who string) { |
| 462 | if s.Keyring == nil { |
| 463 | die("this vault isn't locked") |
| 464 | } |
| 465 | if strings.TrimSpace(who) == "" { |
| 466 | die("who? — `eleven vault give <name>` names a thread member to give access to") |
| 467 | } |
| 468 | me, err := sp.c.Me() |
| 469 | if err != nil { |
| 470 | die("%v", err) |
| 471 | } |
| 472 | members, err := sp.c.Roster() |
| 473 | if err != nil { |
| 474 | die("%v", err) |
| 475 | } |
| 476 | held := map[string]bool{} |
| 477 | for _, w := range s.Keyring.Wraps { |
| 478 | if w.UID != "" { |
| 479 | held[w.UID] = true |
| 480 | } |
| 481 | } |
| 482 | needle := strings.ToLower(strings.TrimSpace(who)) |
| 483 | var match []client.RosterMember |
| 484 | for _, m := range members { |
| 485 | if m.UserID == me || m.IsAgent || m.PublicKey == "" || held[m.UserID] { |
| 486 | continue // me, a bot, keyless, or already holding a key/handoff |
| 487 | } |
| 488 | if strings.Contains(strings.ToLower(m.Name), needle) { |
| 489 | match = append(match, m) |
| 490 | } |
| 491 | } |
| 492 | switch len(match) { |
| 493 | case 0: |
| 494 | die("no thread member without a key matches %q — `eleven vault list` shows who's in", who) |
| 495 | case 1: |
| 496 | // fall through |
| 497 | default: |
| 498 | names := make([]string, len(match)) |
| 499 | for i, m := range match { |
| 500 | names[i] = orSomeone(m.Name) |
| 501 | } |
| 502 | die("several members match %q: %s — be more specific", who, strings.Join(names, ", ")) |
| 503 | } |
| 504 | target := match[0] |
| 505 | priv := unlockVaultPriv(spaceHost(sp.sess), threadID, s) // Touch ID → the vault key |
| 506 | wrapped, err := e2ee.SealForPub(target.PublicKey, map[string]string{"k": priv}) |
| 507 | if err != nil { |
| 508 | die("%v", err) |
| 509 | } |
| 510 | err = sp.c.SendEvent(threadID, map[string]any{ |
| 511 | "type": "vault.give", "aid": newID(), |
| 512 | "wrap": map[string]any{"id": newID(), "kind": "member", "uid": target.UserID, "label": target.Name, "wrapped": wrapped}, |
| 513 | }) |
| 514 | if err != nil { |
| 515 | die("%v", err) |
| 516 | } |
| 517 | fmt.Fprintf(os.Stderr, "%s can now set up their key (`eleven vault enroll`, or Set up your passkey in the app).\n", orSomeone(target.Name)) |
| 518 | } |
| 519 | |
| 520 | // unlockVaultPriv opens the vault private key with this machine's keychain KEK |
| 521 | // (the Touch ID prompt) by trying it against every keychain wrap — which wrap |
| 522 | // is ours needs no bookkeeping, a wrong KEK simply fails AES-GCM auth. |
| 523 | func unlockVaultPriv(host, threadID string, s vault.State) string { |
| 524 | if s.Keyring == nil { |
| 525 | die("this vault isn't locked — nothing to unlock") |
| 526 | } |
| 527 | var keychainWraps []vault.Wrap |
| 528 | for _, w := range s.Keyring.Wraps { |
| 529 | if w.Kind == "keychain" { |
| 530 | keychainWraps = append(keychainWraps, w) |
| 531 | } |
| 532 | } |
| 533 | if len(keychainWraps) == 0 { |
| 534 | die("no CLI keys are enrolled in this vault yet — `eleven vault enroll` to request one") |
| 535 | } |
| 536 | kek, err := vaultKEK(kekAccount(host, threadID), false) |
| 537 | if err != nil { |
| 538 | die("%v", err) |
| 539 | } |
| 540 | for _, w := range keychainWraps { |
| 541 | if priv, err := openUnderKEK(kek, w.Wrapped); err == nil { |
| 542 | return priv |
| 543 | } |
| 544 | } |
| 545 | die("this machine's keychain key doesn't open any of the vault's CLI wraps — `eleven vault enroll` to request access from here") |
| 546 | panic("unreachable") |
| 547 | } |
| 548 | |
| 549 | // kekAccount names this vault's KEK in the keychain — per space host AND per |
| 550 | // thread, so two vaults never share a key, and an OFFLINE read of the same |
| 551 | // vault (same host + thread) finds the same key. |
| 552 | func kekAccount(host, threadID string) string { |
| 553 | return host + "/" + threadID |
| 554 | } |
| 555 | |
| 556 | // wrapUnderKEK/openUnderKEK carry a private key (pkcs8, base64url) under the |
| 557 | // keychain KEK as b64url(iv||ct) — the same wrap format the web's |
| 558 | // wrapVaultPriv/unwrapVaultPriv produce, so wraps are portable across ends. |
| 559 | func wrapUnderKEK(kek []byte, privB64 string) (string, error) { |
| 560 | raw, err := e2ee.B64uDecode(privB64) |
| 561 | if err != nil { |
| 562 | return "", err |
| 563 | } |
| 564 | out, err := e2ee.EncryptBytes(kek, raw) |
| 565 | if err != nil { |
| 566 | return "", err |
| 567 | } |
| 568 | return e2ee.B64uEncode(out), nil |
| 569 | } |
| 570 | |
| 571 | func openUnderKEK(kek []byte, wrappedB64 string) (string, error) { |
| 572 | raw, err := e2ee.B64uDecode(wrappedB64) |
| 573 | if err != nil { |
| 574 | return "", err |
| 575 | } |
| 576 | pt, err := e2ee.DecryptBytes(kek, raw) |
| 577 | if err != nil { |
| 578 | return "", err |
| 579 | } |
| 580 | return e2ee.B64uEncode(pt), nil |
| 581 | } |
| 582 | |
| 583 | // readSecretValue sources a `set` value without ever touching argv: a file, |
| 584 | // piped stdin, or a hidden double-prompt on a TTY. |
| 585 | func readSecretValue(name, fromFile string) string { |
| 586 | if fromFile != "" { |
| 587 | raw, err := os.ReadFile(fromFile) |
| 588 | if err != nil { |
| 589 | die("%v", err) |
| 590 | } |
| 591 | if !utf8.Valid(raw) { |
| 592 | die("%s isn't UTF-8 text — binary values aren't supported yet (base64 it for now)", fromFile) |
| 593 | } |
| 594 | return string(raw) |
| 595 | } |
| 596 | if !term.IsTerminal(int(os.Stdin.Fd())) { |
| 597 | raw, err := io.ReadAll(os.Stdin) |
| 598 | if err != nil { |
| 599 | die("%v", err) |
| 600 | } |
| 601 | // A pipe usually ends with the shell's newline; one is stripped so |
| 602 | // `echo secret | eleven vault set x` stores exactly "secret". |
| 603 | return strings.TrimSuffix(string(raw), "\n") |
| 604 | } |
| 605 | fmt.Fprintf(os.Stderr, "Value for %q (hidden): ", name) |
| 606 | first, err := term.ReadPassword(int(os.Stdin.Fd())) |
| 607 | fmt.Fprintln(os.Stderr) |
| 608 | if err != nil { |
| 609 | die("%v", err) |
| 610 | } |
| 611 | fmt.Fprint(os.Stderr, "Once more to confirm: ") |
| 612 | second, err := term.ReadPassword(int(os.Stdin.Fd())) |
| 613 | fmt.Fprintln(os.Stderr) |
| 614 | if err != nil { |
| 615 | die("%v", err) |
| 616 | } |
| 617 | if string(first) != string(second) { |
| 618 | die("the two entries differ — nothing stored") |
| 619 | } |
| 620 | return string(first) |
| 621 | } |
| 622 | |
| 623 | func orSomeone(name string) string { |
| 624 | if name == "" { |
| 625 | return "someone" |
| 626 | } |
| 627 | return name |
| 628 | } |
| 629 | |
| 630 | // newID mints an entity/audit id — 128 random bits, like the web's |
| 631 | // crypto.randomUUID() (folds only ever compare ids, never parse them). |
| 632 | func newID() string { |
| 633 | b := make([]byte, 16) |
| 634 | if _, err := rand.Read(b); err != nil { |
| 635 | die("%v", err) |
| 636 | } |
| 637 | return hex.EncodeToString(b) |
| 638 | } |
| 639 | |
amadan