| 1 | // eleven is the Eleven Messenger command line: a full E2EE member in your |
| 2 | // terminal. Sign in once with your passkey (`eleven signin`) to pull every |
| 3 | // space saved in your Eleven account, or join a single space with an invite |
| 4 | // link — either way the private keys live in local files and the servers only |
| 5 | // ever see ciphertext, exactly like every other device. |
| 6 | // |
| 7 | // A separate small binary (like push/ and home/), not an lchat subcommand: |
| 8 | // members install the client, operators install the server. |
| 9 | package main |
| 10 | |
| 11 | import ( |
| 12 | "bufio" |
| 13 | "context" |
| 14 | "flag" |
| 15 | "fmt" |
| 16 | "io" |
| 17 | "os" |
| 18 | "path/filepath" |
| 19 | "strings" |
| 20 | "time" |
| 21 | |
| 22 | "lchat/internal/client" |
| 23 | ) |
| 24 | |
| 25 | func main() { |
| 26 | fs := flag.NewFlagSet("eleven", flag.ExitOnError) |
| 27 | sessionPath := fs.String("session", envOr("ELEVEN_SESSION", ""), |
| 28 | "use ONE identity file instead of the ~/.eleven store (env: ELEVEN_SESSION)") |
| 29 | dir := fs.String("dir", envOr("ELEVEN_DIR", defaultDir()), |
| 30 | "the eleven store directory (env: ELEVEN_DIR)") |
| 31 | fs.Usage = usage(fs) |
| 32 | _ = fs.Parse(os.Args[1:]) |
| 33 | args := fs.Args() |
| 34 | if len(args) == 0 { |
| 35 | fs.Usage() |
| 36 | os.Exit(2) |
| 37 | } |
| 38 | |
| 39 | switch args[0] { |
| 40 | case "signin": |
| 41 | if *sessionPath != "" { |
| 42 | die("signin fills the ~/.eleven store — drop the -session flag") |
| 43 | } |
| 44 | st, err := openStore(*dir) |
| 45 | if err != nil { |
| 46 | die("%v", err) |
| 47 | } |
| 48 | runSignin(st, args[1:]) |
| 49 | case "join": |
| 50 | runJoin(*dir, *sessionPath, args[1:]) |
| 51 | case "spaces": |
| 52 | runSpaces(mustSpaces(*dir, *sessionPath)) |
| 53 | case "chats": |
| 54 | runChats(mustSpaces(*dir, *sessionPath)) |
| 55 | case "chat": |
| 56 | runChat(mustSpaces(*dir, *sessionPath), strings.Join(args[1:], " ")) |
| 57 | case "send": |
| 58 | runSend(mustSpaces(*dir, *sessionPath), args[1:]) |
| 59 | case "vault": |
| 60 | runVault(mustSpaces(*dir, *sessionPath), args[1:]) |
| 61 | case "help", "-h", "--help": |
| 62 | fs.Usage() |
| 63 | default: |
| 64 | fmt.Fprintf(os.Stderr, "eleven: unknown command %q\n\n", args[0]) |
| 65 | fs.Usage() |
| 66 | os.Exit(2) |
| 67 | } |
| 68 | } |
| 69 | |
| 70 | func usage(fs *flag.FlagSet) func() { |
| 71 | return func() { |
| 72 | fmt.Fprint(os.Stderr, `usage: eleven <command> |
| 73 | |
| 74 | commands: |
| 75 | signin [--paste] [--fresh] sign in with your passkey (via your browser) and |
| 76 | pull every space saved in your Eleven account; |
| 77 | re-syncs silently once signed in |
| 78 | join [--name you] [link] join one space with an invite link (add-device |
| 79 | links sign this terminal in as you) |
| 80 | spaces list the spaces this terminal is signed into |
| 81 | chats list your chats |
| 82 | chat [name] open a chat and talk; newest chat when no name. |
| 83 | Type to send, Ctrl-C or Ctrl-D to leave |
| 84 | send <name> [text] send one message and exit (reads stdin without text) |
| 85 | vault <command> the Vault app from the terminal: list/get/set |
| 86 | secrets, enroll this machine with a Touch ID key |
| 87 | ("eleven vault" shows the full set) |
| 88 | |
| 89 | Chat names match by substring; prefix with a space to disambiguate |
| 90 | ("family/kitchen"). Identities live in ~/.eleven — those files hold your |
| 91 | private keys; keep them safe. |
| 92 | |
| 93 | `) |
| 94 | fs.PrintDefaults() |
| 95 | } |
| 96 | } |
| 97 | |
| 98 | func defaultDir() string { |
| 99 | home, err := os.UserHomeDir() |
| 100 | if err != nil { |
| 101 | return ".eleven" |
| 102 | } |
| 103 | return filepath.Join(home, ".eleven") |
| 104 | } |
| 105 | |
| 106 | func envOr(key, def string) string { |
| 107 | if v := strings.TrimSpace(os.Getenv(key)); v != "" { |
| 108 | return v |
| 109 | } |
| 110 | return def |
| 111 | } |
| 112 | |
| 113 | func die(format string, args ...any) { |
| 114 | fmt.Fprintf(os.Stderr, "eleven: "+format+"\n", args...) |
| 115 | os.Exit(1) |
| 116 | } |
| 117 | |
| 118 | // space is one signed-in space: its session plus a lazily-shared client. |
| 119 | type space struct { |
| 120 | sess *client.Session |
| 121 | c *client.Client |
| 122 | } |
| 123 | |
| 124 | // mustSpaces loads every identity this terminal holds: the explicit -session |
| 125 | // file when given (single-space mode), else the ~/.eleven store. Fresh |
| 126 | // members' name publish is retried here (it needs the instance key, granted |
| 127 | // asynchronously by another member's device). |
| 128 | func mustSpaces(dir, sessionPath string) []*space { |
| 129 | if sessionPath != "" { |
| 130 | sess, err := client.LoadSession(sessionPath) |
| 131 | if err != nil { |
| 132 | die("%v", err) |
| 133 | } |
| 134 | if sess == nil { |
| 135 | die("no identity at %s — run `eleven join` or `eleven signin` first", sessionPath) |
| 136 | } |
| 137 | if sess.Base == "" { |
| 138 | die("%s has no server URL — re-join with `eleven join`", sessionPath) |
| 139 | } |
| 140 | return []*space{newSpace(sess, sessionPath)} |
| 141 | } |
| 142 | st, err := openStore(dir) |
| 143 | if err != nil { |
| 144 | die("%v", err) |
| 145 | } |
| 146 | sessions, err := st.spaces() |
| 147 | if err != nil { |
| 148 | die("%v", err) |
| 149 | } |
| 150 | if len(sessions) == 0 { |
| 151 | die("no spaces yet — `eleven signin` (passkey) or `eleven join` (invite link) first") |
| 152 | } |
| 153 | var out []*space |
| 154 | for _, sess := range sessions { |
| 155 | path, err := st.spacePath(sess) |
| 156 | if err != nil { |
| 157 | die("%v", err) |
| 158 | } |
| 159 | out = append(out, newSpace(sess, path)) |
| 160 | } |
| 161 | return out |
| 162 | } |
| 163 | |
| 164 | func newSpace(sess *client.Session, path string) *space { |
| 165 | sp := &space{sess: sess, c: &client.Client{Base: sess.Base, Session: sess}} |
| 166 | if !sess.LabelPublished { |
| 167 | if err := sp.c.PublishLabel(); err == nil { |
| 168 | sess.LabelPublished = true |
| 169 | _ = sess.Save(path) |
| 170 | } |
| 171 | } |
| 172 | return sp |
| 173 | } |
| 174 | |
| 175 | func runJoin(dir, sessionPath string, args []string) { |
| 176 | fs := flag.NewFlagSet("eleven join", flag.ExitOnError) |
| 177 | name := fs.String("name", "", "your display name (prompts if the link doesn't carry one)") |
| 178 | _ = fs.Parse(args) |
| 179 | |
| 180 | in := bufio.NewReader(os.Stdin) |
| 181 | link := strings.TrimSpace(strings.Join(fs.Args(), " ")) |
| 182 | if link == "" { |
| 183 | fmt.Fprint(os.Stderr, "Paste your invite link: ") |
| 184 | line, err := in.ReadString('\n') |
| 185 | if err != nil && strings.TrimSpace(line) == "" { |
| 186 | die("no invite link given") |
| 187 | } |
| 188 | link = strings.TrimSpace(line) |
| 189 | } |
| 190 | inv, err := client.ParseInviteLink(link) |
| 191 | if err != nil { |
| 192 | die("%v", err) |
| 193 | } |
| 194 | |
| 195 | // One identity per space per store: joining a space this terminal already |
| 196 | // holds would orphan the existing keys. |
| 197 | var st *store |
| 198 | if sessionPath == "" { |
| 199 | if st, err = openStore(dir); err != nil { |
| 200 | die("%v", err) |
| 201 | } |
| 202 | existing, err := st.spaces() |
| 203 | if err != nil { |
| 204 | die("%v", err) |
| 205 | } |
| 206 | for _, e := range existing { |
| 207 | if e.Base == inv.Base { |
| 208 | die("already signed into %s (as %q) — `eleven chat` to use it", inv.Base, e.Name) |
| 209 | } |
| 210 | } |
| 211 | } else if existing, err := client.LoadSession(sessionPath); err != nil { |
| 212 | die("%v", err) |
| 213 | } else if existing != nil { |
| 214 | die("already joined as %q (%s) — delete %s to start over", existing.Name, existing.Base, sessionPath) |
| 215 | } |
| 216 | |
| 217 | who := strings.TrimSpace(*name) |
| 218 | if who == "" { |
| 219 | who = inv.Name // the inviter's suggestion rides in the link fragment |
| 220 | } |
| 221 | if who == "" { |
| 222 | fmt.Fprint(os.Stderr, "Your name: ") |
| 223 | line, _ := in.ReadString('\n') |
| 224 | who = strings.TrimSpace(line) |
| 225 | if who == "" { |
| 226 | die("a name is needed — it's how your messages are signed") |
| 227 | } |
| 228 | } |
| 229 | |
| 230 | sess, res, err := client.Join(inv.Base, inv.T, who) |
| 231 | if err != nil { |
| 232 | die("%v", err) |
| 233 | } |
| 234 | c := &client.Client{Base: sess.Base, Session: sess} |
| 235 | if res.AddDevice { |
| 236 | // An existing member's devices already share a roster name; nothing to publish. |
| 237 | sess.LabelPublished = true |
| 238 | } else if c.PublishLabel() == nil { |
| 239 | // Best-effort: a fresh member's name reaches the roster only once another |
| 240 | // member's device grants the instance key; retried on later runs. |
| 241 | sess.LabelPublished = true |
| 242 | } |
| 243 | saveTo := sessionPath |
| 244 | if st != nil { |
| 245 | if err := st.saveSpace(sess); err != nil { |
| 246 | die("%v", err) |
| 247 | } |
| 248 | saveTo, _ = st.spacePath(sess) |
| 249 | } else if err := sess.Save(sessionPath); err != nil { |
| 250 | die("%v", err) |
| 251 | } |
| 252 | if res.AddDevice { |
| 253 | fmt.Printf("Signed in as %s on %s — this terminal is now one of your devices.\n", sess.Name, sess.Base) |
| 254 | } else { |
| 255 | fmt.Printf("Joined %s as %s.\n", sess.Base, sess.Name) |
| 256 | if !sess.LabelPublished { |
| 257 | fmt.Println("(Your name will appear in the member list once another member is online; your messages carry it already.)") |
| 258 | } |
| 259 | } |
| 260 | fmt.Printf("Identity saved to %s — it holds your private key; keep it safe.\n", saveTo) |
| 261 | fmt.Println("\nTry: eleven chats") |
| 262 | } |
| 263 | |
| 264 | func runSpaces(spaces []*space) { |
| 265 | for _, sp := range spaces { |
| 266 | star := " " |
| 267 | if sp.sess.Starred { |
| 268 | star = "★" |
| 269 | } |
| 270 | fmt.Printf("%s %-28s %s (as %s)\n", star, clip(spaceLabel(sp.sess), 28), spaceHost(sp.sess), sp.sess.Name) |
| 271 | } |
| 272 | } |
| 273 | |
| 274 | // spaceThread pairs a thread with the space it lives in. |
| 275 | type spaceThread struct { |
| 276 | sp *space |
| 277 | t client.Thread |
| 278 | } |
| 279 | |
| 280 | func allThreads(spaces []*space) []spaceThread { |
| 281 | var out []spaceThread |
| 282 | for _, sp := range spaces { |
| 283 | threads, err := sp.c.Threads() |
| 284 | if err != nil { |
| 285 | fmt.Fprintf(os.Stderr, "eleven: %s: %v\n", spaceHost(sp.sess), err) |
| 286 | continue |
| 287 | } |
| 288 | for _, t := range threads { |
| 289 | out = append(out, spaceThread{sp: sp, t: t}) |
| 290 | } |
| 291 | } |
| 292 | return out |
| 293 | } |
| 294 | |
| 295 | func runChats(spaces []*space) { |
| 296 | printed := 0 |
| 297 | for _, sp := range spaces { |
| 298 | threads, err := sp.c.Threads() |
| 299 | if err != nil { |
| 300 | fmt.Fprintf(os.Stderr, "eleven: %s: %v\n", spaceHost(sp.sess), err) |
| 301 | continue |
| 302 | } |
| 303 | if len(spaces) > 1 { |
| 304 | fmt.Printf("— %s (%s)\n", spaceLabel(sp.sess), spaceHost(sp.sess)) |
| 305 | } |
| 306 | for _, t := range threads { |
| 307 | name := displayName(t) |
| 308 | preview := "" |
| 309 | if t.LastText != "" { |
| 310 | preview = t.LastName + ": " + firstLine(t.LastText) |
| 311 | } |
| 312 | fmt.Printf("%-24s %-6s %s %s\n", clip(name, 24), t.Kind, relTime(t.LastAt), clip(preview, 60)) |
| 313 | printed++ |
| 314 | } |
| 315 | } |
| 316 | if printed == 0 { |
| 317 | fmt.Println("No chats yet — they appear here once someone messages you or adds you to a group.") |
| 318 | } |
| 319 | } |
| 320 | |
| 321 | func runChat(spaces []*space, needle string) { |
| 322 | st := resolveThread(spaces, needle) |
| 323 | sp, t := st.sp, st.t |
| 324 | name := displayName(t) |
| 325 | |
| 326 | history, err := sp.c.History(t.ID, 25) |
| 327 | if err != nil { |
| 328 | die("%v", err) |
| 329 | } |
| 330 | if len(spaces) > 1 { |
| 331 | fmt.Printf("── %s · %s ── (type to send · Ctrl-C to leave)\n", name, spaceLabel(sp.sess)) |
| 332 | } else { |
| 333 | fmt.Printf("── %s ── (type to send · Ctrl-C to leave)\n", name) |
| 334 | } |
| 335 | for _, m := range history { |
| 336 | printMessage(m) |
| 337 | } |
| 338 | |
| 339 | ctx, cancel := context.WithCancel(context.Background()) |
| 340 | defer cancel() |
| 341 | sp.c.OnMessage = func(m client.Message) { |
| 342 | if m.ThreadID != t.ID || m.Echo { |
| 343 | return // this terminal's own sends are already on screen as the typed line |
| 344 | } |
| 345 | printMessage(m) // Mine-but-not-Echo = sent from another of your devices → "you" |
| 346 | } |
| 347 | errc := make(chan error, 1) |
| 348 | go func() { errc <- sp.c.Run(ctx) }() |
| 349 | |
| 350 | in := bufio.NewScanner(os.Stdin) |
| 351 | in.Buffer(make([]byte, 64*1024), 64*1024) |
| 352 | for in.Scan() { |
| 353 | text := strings.TrimSpace(in.Text()) |
| 354 | if text == "" { |
| 355 | continue |
| 356 | } |
| 357 | if err := sp.c.Send(t.ID, text); err != nil { |
| 358 | fmt.Fprintf(os.Stderr, "eleven: not sent: %v\n", err) |
| 359 | } |
| 360 | } |
| 361 | cancel() |
| 362 | <-errc |
| 363 | } |
| 364 | |
| 365 | func runSend(spaces []*space, args []string) { |
| 366 | if len(args) == 0 { |
| 367 | die("usage: eleven send <chat> [text] (reads stdin when text is omitted)") |
| 368 | } |
| 369 | st := resolveThread(spaces, args[0]) |
| 370 | text := strings.TrimSpace(strings.Join(args[1:], " ")) |
| 371 | if text == "" { |
| 372 | raw, err := readAllStdin() |
| 373 | if err != nil { |
| 374 | die("%v", err) |
| 375 | } |
| 376 | text = strings.TrimSpace(raw) |
| 377 | } |
| 378 | if text == "" { |
| 379 | die("nothing to send") |
| 380 | } |
| 381 | if err := st.sp.c.Send(st.t.ID, text); err != nil { |
| 382 | die("%v", err) |
| 383 | } |
| 384 | fmt.Printf("Sent to %s.\n", displayName(st.t)) |
| 385 | } |
| 386 | |
| 387 | func readAllStdin() (string, error) { |
| 388 | raw, err := io.ReadAll(os.Stdin) |
| 389 | return string(raw), err |
| 390 | } |
| 391 | |
| 392 | // resolveThread finds a chat by (case-insensitive) name substring across every |
| 393 | // space; "space/name" scopes to one space first. An empty needle picks the |
| 394 | // most recently active chat overall. Exact match beats substring; ambiguity |
| 395 | // lists the candidates instead of guessing. |
| 396 | func resolveThread(spaces []*space, needle string) spaceThread { |
| 397 | needle = strings.ToLower(strings.TrimSpace(needle)) |
| 398 | if i := strings.Index(needle, "/"); i >= 0 { |
| 399 | spaceNeedle, rest := needle[:i], needle[i+1:] |
| 400 | var scoped []*space |
| 401 | for _, sp := range spaces { |
| 402 | if matchesSpace(sp.sess, spaceNeedle) { |
| 403 | scoped = append(scoped, sp) |
| 404 | } |
| 405 | } |
| 406 | if len(scoped) == 0 { |
| 407 | die("no space matches %q — see `eleven spaces`", spaceNeedle) |
| 408 | } |
| 409 | spaces, needle = scoped, rest |
| 410 | } |
| 411 | all := allThreads(spaces) |
| 412 | if len(all) == 0 { |
| 413 | die("no chats yet — someone needs to message you or add you to a group first") |
| 414 | } |
| 415 | if needle == "" { |
| 416 | newest := all[0] |
| 417 | for _, st := range all[1:] { |
| 418 | if st.t.LastAt > newest.t.LastAt { |
| 419 | newest = st |
| 420 | } |
| 421 | } |
| 422 | return newest |
| 423 | } |
| 424 | var exact, partial []spaceThread |
| 425 | for _, st := range all { |
| 426 | n := strings.ToLower(displayName(st.t)) |
| 427 | if n == needle { |
| 428 | exact = append(exact, st) |
| 429 | } else if strings.Contains(n, needle) || st.t.ID == needle { |
| 430 | partial = append(partial, st) |
| 431 | } |
| 432 | } |
| 433 | if len(exact) == 1 { |
| 434 | return exact[0] |
| 435 | } |
| 436 | matches := append(exact, partial...) |
| 437 | switch len(matches) { |
| 438 | case 1: |
| 439 | return matches[0] |
| 440 | case 0: |
| 441 | die("no chat matches %q — see `eleven chats`", needle) |
| 442 | default: |
| 443 | names := make([]string, len(matches)) |
| 444 | for i, st := range matches { |
| 445 | names[i] = spaceHost(st.sp.sess) + "/" + displayName(st.t) |
| 446 | } |
| 447 | die("%q matches several chats: %s", needle, strings.Join(names, ", ")) |
| 448 | } |
| 449 | panic("unreachable") |
| 450 | } |
| 451 | |
| 452 | func displayName(t client.Thread) string { |
| 453 | if t.Name != "" { |
| 454 | return t.Name |
| 455 | } |
| 456 | switch t.Kind { |
| 457 | case "self": |
| 458 | return "Notes to self" |
| 459 | case "dm": |
| 460 | return "Direct message" // partner's name not decryptable (yet) |
| 461 | default: |
| 462 | return "Group" |
| 463 | } |
| 464 | } |
| 465 | |
| 466 | func printMessage(m client.Message) { |
| 467 | when := "" |
| 468 | if m.Ts > 0 { |
| 469 | when = time.UnixMilli(m.Ts).Local().Format("15:04") + " " |
| 470 | } |
| 471 | who := m.Name |
| 472 | if m.Mine { |
| 473 | who = "you" |
| 474 | } |
| 475 | if m.Action { |
| 476 | fmt.Printf("%s· %s %s\n", when, who, firstLineKeep(m.Text)) |
| 477 | return |
| 478 | } |
| 479 | suffix := "" |
| 480 | if m.Actions > 0 { |
| 481 | suffix = fmt.Sprintf(" [%d button(s) — tap them in the app]", m.Actions) |
| 482 | } |
| 483 | fmt.Printf("%s%s: %s%s\n", when, who, m.Text, suffix) |
| 484 | } |
| 485 | |
| 486 | func firstLine(s string) string { |
| 487 | if i := strings.IndexByte(s, '\n'); i >= 0 { |
| 488 | return s[:i] + " …" |
| 489 | } |
| 490 | return s |
| 491 | } |
| 492 | |
| 493 | // firstLineKeep collapses newlines without adding an ellipsis (action lines |
| 494 | // are short status text). |
| 495 | func firstLineKeep(s string) string { |
| 496 | return strings.ReplaceAll(s, "\n", " ") |
| 497 | } |
| 498 | |
| 499 | func clip(s string, n int) string { |
| 500 | r := []rune(s) |
| 501 | if len(r) <= n { |
| 502 | return s |
| 503 | } |
| 504 | return string(r[:n-1]) + "…" |
| 505 | } |
| 506 | |
| 507 | func relTime(sec int64) string { |
| 508 | if sec == 0 { |
| 509 | return " —" |
| 510 | } |
| 511 | d := time.Since(time.Unix(sec, 0)) |
| 512 | switch { |
| 513 | case d < time.Minute: |
| 514 | return " now" |
| 515 | case d < time.Hour: |
| 516 | return fmt.Sprintf("%5dm ", int(d.Minutes())) |
| 517 | case d < 24*time.Hour: |
| 518 | return fmt.Sprintf("%5dh ", int(d.Hours())) |
| 519 | default: |
| 520 | return fmt.Sprintf("%5dd ", int(d.Hours()/24)) |
| 521 | } |
| 522 | } |
| 523 | |
amadan