| 1 | package agent |
| 2 | |
| 3 | import ( |
| 4 | "context" |
| 5 | "errors" |
| 6 | "fmt" |
| 7 | "os" |
| 8 | "reflect" |
| 9 | "slices" |
| 10 | "strings" |
| 11 | "sync" |
| 12 | "time" |
| 13 | |
| 14 | "github.com/rs/zerolog/log" |
| 15 | |
| 16 | "github.com/gosuda/portal-tunnel/v2/sdk" |
| 17 | "github.com/gosuda/portal-tunnel/v2/types" |
| 18 | "github.com/gosuda/portal-tunnel/v2/utils" |
| 19 | ) |
| 20 | |
| 21 | const managedTunnelRetryInterval = 30 * time.Second |
| 22 | |
| 23 | type manager struct { |
| 24 | controlAddr string |
| 25 | |
| 26 | configMu sync.Mutex |
| 27 | |
| 28 | mu sync.RWMutex |
| 29 | cfg Config |
| 30 | tunnels map[string]*managedTunnel |
| 31 | rootCtx context.Context |
| 32 | } |
| 33 | |
| 34 | func newManager(cfg Config, controlAddr string) *manager { |
| 35 | manager := &manager{ |
| 36 | controlAddr: controlAddr, |
| 37 | cfg: cfg, |
| 38 | tunnels: make(map[string]*managedTunnel, len(cfg.Tunnels)), |
| 39 | } |
| 40 | for _, tunnelCfg := range cfg.Tunnels { |
| 41 | manager.tunnels[tunnelCfg.ID] = newTunnel(tunnelCfg) |
| 42 | } |
| 43 | return manager |
| 44 | } |
| 45 | |
| 46 | func (m *manager) Start(ctx context.Context) { |
| 47 | m.mu.Lock() |
| 48 | m.rootCtx = ctx |
| 49 | m.mu.Unlock() |
| 50 | |
| 51 | m.mu.RLock() |
| 52 | tunnels := make([]*managedTunnel, 0, len(m.tunnels)) |
| 53 | for _, tunnel := range m.tunnels { |
| 54 | tunnels = append(tunnels, tunnel) |
| 55 | } |
| 56 | m.mu.RUnlock() |
| 57 | |
| 58 | for _, tunnel := range tunnels { |
| 59 | tunnel.Start(ctx) |
| 60 | } |
| 61 | } |
| 62 | |
| 63 | func (m *manager) Stop(ctx context.Context) error { |
| 64 | m.mu.RLock() |
| 65 | tunnels := make([]*managedTunnel, 0, len(m.tunnels)) |
| 66 | for _, tunnel := range m.tunnels { |
| 67 | tunnels = append(tunnels, tunnel) |
| 68 | } |
| 69 | m.mu.RUnlock() |
| 70 | |
| 71 | var wg sync.WaitGroup |
| 72 | wg.Add(len(tunnels)) |
| 73 | for _, tunnel := range tunnels { |
| 74 | go func(t *managedTunnel) { |
| 75 | defer wg.Done() |
| 76 | if err := t.Stop(ctx); err != nil { |
| 77 | t.mu.RLock() |
| 78 | tunnelID := t.cfg.ID |
| 79 | t.mu.RUnlock() |
| 80 | log.Warn().Err(err).Str("tunnel_id", tunnelID).Msg("stop tunnel") |
| 81 | } |
| 82 | }(tunnel) |
| 83 | } |
| 84 | |
| 85 | done := make(chan struct{}) |
| 86 | go func() { |
| 87 | wg.Wait() |
| 88 | close(done) |
| 89 | }() |
| 90 | |
| 91 | select { |
| 92 | case <-done: |
| 93 | return nil |
| 94 | case <-ctx.Done(): |
| 95 | return ctx.Err() |
| 96 | } |
| 97 | } |
| 98 | |
| 99 | func (m *manager) ConnectRelay(id, relayURL string) error { |
| 100 | id = strings.TrimSpace(id) |
| 101 | if err := validateAgentPathComponent("tunnel id", id); err != nil { |
| 102 | return err |
| 103 | } |
| 104 | |
| 105 | m.mu.RLock() |
| 106 | tunnel := m.tunnels[id] |
| 107 | m.mu.RUnlock() |
| 108 | if tunnel == nil { |
| 109 | return fmt.Errorf("tunnel %q not found", id) |
| 110 | } |
| 111 | return tunnel.ConnectRelay(relayURL) |
| 112 | } |
| 113 | |
| 114 | func (m *manager) DisconnectRelay(id, relayURL string) error { |
| 115 | id = strings.TrimSpace(id) |
| 116 | if err := validateAgentPathComponent("tunnel id", id); err != nil { |
| 117 | return err |
| 118 | } |
| 119 | |
| 120 | m.mu.RLock() |
| 121 | tunnel := m.tunnels[id] |
| 122 | m.mu.RUnlock() |
| 123 | if tunnel == nil { |
| 124 | return fmt.Errorf("tunnel %q not found", id) |
| 125 | } |
| 126 | return tunnel.DisconnectRelay(relayURL) |
| 127 | } |
| 128 | |
| 129 | func (m *manager) SetMultiHop(id string, relayURLs []string) error { |
| 130 | id = strings.TrimSpace(id) |
| 131 | multiHop, err := utils.NormalizeRelayURLs(relayURLs...) |
| 132 | if err != nil { |
| 133 | return fmt.Errorf("normalize multi-hop relay url: %w", err) |
| 134 | } |
| 135 | if len(multiHop) != len(relayURLs) { |
| 136 | return errors.New("multi-hop relay url repeated") |
| 137 | } |
| 138 | if len(multiHop) == 1 { |
| 139 | return errors.New("multi-hop requires at least entry and exit relay urls") |
| 140 | } |
| 141 | if err := m.updateTunnelConfig(id, func(tunnel *TunnelConfig) error { |
| 142 | tunnel.MultiHop = append([]string(nil), multiHop...) |
| 143 | tunnel.MultiHopDepth = 0 |
| 144 | return nil |
| 145 | }); err != nil { |
| 146 | return err |
| 147 | } |
| 148 | |
| 149 | m.mu.RLock() |
| 150 | tunnel := m.tunnels[id] |
| 151 | m.mu.RUnlock() |
| 152 | if tunnel == nil { |
| 153 | return fmt.Errorf("tunnel %q not found", id) |
| 154 | } |
| 155 | return tunnel.SetMultiHop(multiHop) |
| 156 | } |
| 157 | |
| 158 | func (m *manager) UpdateTunnel(id string, req types.AgentTunnelUpdateRequest) error { |
| 159 | if req.Empty() { |
| 160 | return errors.New("tunnel update requires at least one field") |
| 161 | } |
| 162 | updateMetadata := req.Metadata != nil && !req.Metadata.Empty() |
| 163 | updateMaxActiveRelays := req.MaxActiveRelays != nil |
| 164 | if err := m.updateTunnelConfig(id, func(tunnel *TunnelConfig) error { |
| 165 | if req.MaxActiveRelays != nil { |
| 166 | if *req.MaxActiveRelays <= 0 { |
| 167 | return errors.New("max_active_relays must be a positive integer") |
| 168 | } |
| 169 | tunnel.MaxActiveRelays = *req.MaxActiveRelays |
| 170 | } |
| 171 | if req.Metadata != nil { |
| 172 | if req.Metadata.Description != nil { |
| 173 | tunnel.Description = strings.TrimSpace(*req.Metadata.Description) |
| 174 | } |
| 175 | if req.Metadata.Owner != nil { |
| 176 | tunnel.Owner = strings.TrimSpace(*req.Metadata.Owner) |
| 177 | } |
| 178 | if req.Metadata.Thumbnail != nil { |
| 179 | tunnel.Thumbnail = strings.TrimSpace(*req.Metadata.Thumbnail) |
| 180 | } |
| 181 | if req.Metadata.Tags != nil { |
| 182 | tunnel.Tags = normalizeAgentMetadataTags(*req.Metadata.Tags) |
| 183 | } |
| 184 | if req.Metadata.Hide != nil { |
| 185 | tunnel.Hide = *req.Metadata.Hide |
| 186 | } |
| 187 | } |
| 188 | return nil |
| 189 | }); err != nil { |
| 190 | return err |
| 191 | } |
| 192 | |
| 193 | id = strings.TrimSpace(id) |
| 194 | m.mu.RLock() |
| 195 | tunnel := m.tunnels[id] |
| 196 | m.mu.RUnlock() |
| 197 | if tunnel == nil { |
| 198 | return fmt.Errorf("tunnel %q not found", id) |
| 199 | } |
| 200 | return tunnel.UpdateSettings(updateMetadata, updateMaxActiveRelays) |
| 201 | } |
| 202 | |
| 203 | func (m *manager) AddTunnel(req types.AgentTunnelRequest) error { |
| 204 | m.configMu.Lock() |
| 205 | defer m.configMu.Unlock() |
| 206 | |
| 207 | cfg, path, mode, err := m.loadConfigDocument() |
| 208 | if err != nil { |
| 209 | return err |
| 210 | } |
| 211 | id := strings.TrimSpace(req.ID) |
| 212 | name := strings.TrimSpace(req.Name) |
| 213 | if id == "" { |
| 214 | id = agentTunnelID(name) |
| 215 | } |
| 216 | if id == "" { |
| 217 | return errors.New("tunnel name is required") |
| 218 | } |
| 219 | if err := validateAgentPathComponent("tunnel id", id); err != nil { |
| 220 | return err |
| 221 | } |
| 222 | target := strings.TrimSpace(req.TargetAddr) |
| 223 | httpRoutes := make([]HTTPRouteConfig, 0, len(req.HTTPRoutes)) |
| 224 | for _, route := range req.HTTPRoutes { |
| 225 | httpRoutes = append(httpRoutes, HTTPRouteConfig{ |
| 226 | Prefix: strings.TrimSpace(route.Prefix), |
| 227 | Upstream: strings.TrimSpace(route.Upstream), |
| 228 | Methods: normalizeAgentHTTPRouteMethods(route.Methods), |
| 229 | Amount: strings.TrimSpace(route.Amount), |
| 230 | }) |
| 231 | } |
| 232 | if target != "" && len(httpRoutes) > 0 { |
| 233 | return errors.New("target cannot be combined with http_routes") |
| 234 | } |
| 235 | if target == "" && len(httpRoutes) == 0 { |
| 236 | target = defaultTargetAddr |
| 237 | } |
| 238 | if name == "" { |
| 239 | name = id |
| 240 | } |
| 241 | relayURLs, err := utils.NormalizeRelayURLs(req.RelayURLs...) |
| 242 | if err != nil { |
| 243 | return err |
| 244 | } |
| 245 | discovery := true |
| 246 | if req.Discovery != nil { |
| 247 | discovery = *req.Discovery |
| 248 | } |
| 249 | if req.MaxActiveRelays < 0 { |
| 250 | return errors.New("max_active_relays cannot be negative") |
| 251 | } |
| 252 | tunnelCfg := TunnelConfig{ |
| 253 | ID: id, |
| 254 | Name: name, |
| 255 | TargetAddr: target, |
| 256 | HTTPRoutes: httpRoutes, |
| 257 | RelayURLs: relayURLs, |
| 258 | Discovery: &discovery, |
| 259 | MaxActiveRelays: req.MaxActiveRelays, |
| 260 | X402PayTo: strings.TrimSpace(req.X402PayTo), |
| 261 | X402Testnet: req.X402Testnet, |
| 262 | } |
| 263 | if slices.ContainsFunc(cfg.Tunnels, func(tunnel TunnelConfig) bool { return tunnel.ID == tunnelCfg.ID }) { |
| 264 | return fmt.Errorf("tunnel %q already exists", tunnelCfg.ID) |
| 265 | } |
| 266 | cfg.Tunnels = append(cfg.Tunnels, tunnelCfg) |
| 267 | return m.writeConfigAndApply(path, mode, cfg) |
| 268 | } |
| 269 | |
| 270 | func agentTunnelID(name string) string { |
| 271 | name = strings.ToLower(strings.TrimSpace(name)) |
| 272 | var out strings.Builder |
| 273 | dash := false |
| 274 | for _, r := range name { |
| 275 | if invalidAgentPathComponentRune(r) { |
| 276 | if out.Len() > 0 && !dash { |
| 277 | out.WriteByte('-') |
| 278 | dash = true |
| 279 | } |
| 280 | continue |
| 281 | } |
| 282 | out.WriteRune(r) |
| 283 | dash = false |
| 284 | } |
| 285 | return strings.Trim(out.String(), "-") |
| 286 | } |
| 287 | |
| 288 | func normalizeAgentHTTPRouteMethods(methods []string) []string { |
| 289 | out := make([]string, 0, len(methods)) |
| 290 | for _, raw := range methods { |
| 291 | method := strings.ToUpper(strings.TrimSpace(raw)) |
| 292 | if method != "" && !slices.Contains(out, method) { |
| 293 | out = append(out, method) |
| 294 | } |
| 295 | } |
| 296 | return out |
| 297 | } |
| 298 | |
| 299 | func (m *manager) updateTunnelConfig(id string, update func(*TunnelConfig) error) error { |
| 300 | id = strings.TrimSpace(id) |
| 301 | if err := validateAgentPathComponent("tunnel id", id); err != nil { |
| 302 | return err |
| 303 | } |
| 304 | |
| 305 | m.configMu.Lock() |
| 306 | defer m.configMu.Unlock() |
| 307 | |
| 308 | cfg, path, mode, err := m.loadConfigDocument() |
| 309 | if err != nil { |
| 310 | return err |
| 311 | } |
| 312 | index := slices.IndexFunc(cfg.Tunnels, func(tunnel TunnelConfig) bool { return tunnel.ID == id }) |
| 313 | if index < 0 { |
| 314 | return fmt.Errorf("tunnel %q not found", id) |
| 315 | } |
| 316 | before := cfg.Tunnels[index] |
| 317 | if err := update(&cfg.Tunnels[index]); err != nil { |
| 318 | return err |
| 319 | } |
| 320 | if reflect.DeepEqual(before, cfg.Tunnels[index]) { |
| 321 | return nil |
| 322 | } |
| 323 | cfg.sourcePath = path |
| 324 | if err := cfg.ApplyDefaults(path); err != nil { |
| 325 | return err |
| 326 | } |
| 327 | if err := cfg.Validate(); err != nil { |
| 328 | return err |
| 329 | } |
| 330 | if err := writeConfigDocument(path, mode, cfg); err != nil { |
| 331 | return err |
| 332 | } |
| 333 | |
| 334 | nextTunnelCfg := cfg.Tunnels[index] |
| 335 | m.mu.Lock() |
| 336 | m.cfg = cfg |
| 337 | if tunnel := m.tunnels[id]; tunnel != nil { |
| 338 | tunnel.mu.Lock() |
| 339 | tunnel.cfg = nextTunnelCfg |
| 340 | tunnel.mu.Unlock() |
| 341 | } |
| 342 | m.mu.Unlock() |
| 343 | return nil |
| 344 | } |
| 345 | |
| 346 | func (m *manager) DeleteTunnel(id string) error { |
| 347 | m.configMu.Lock() |
| 348 | defer m.configMu.Unlock() |
| 349 | |
| 350 | id = strings.TrimSpace(id) |
| 351 | if id == "" { |
| 352 | return errors.New("tunnel id is required") |
| 353 | } |
| 354 | cfg, path, mode, err := m.loadConfigDocument() |
| 355 | if err != nil { |
| 356 | return err |
| 357 | } |
| 358 | |
| 359 | index := slices.IndexFunc(cfg.Tunnels, func(tunnel TunnelConfig) bool { return tunnel.ID == id }) |
| 360 | if index < 0 { |
| 361 | return fmt.Errorf("tunnel %q not found", id) |
| 362 | } |
| 363 | next := cfg.Tunnels[:0] |
| 364 | for i, tunnel := range cfg.Tunnels { |
| 365 | if i == index { |
| 366 | continue |
| 367 | } |
| 368 | next = append(next, tunnel) |
| 369 | } |
| 370 | cfg.Tunnels = next |
| 371 | return m.writeConfigAndApply(path, mode, cfg) |
| 372 | } |
| 373 | |
| 374 | func (m *manager) loadConfigDocument() (Config, string, os.FileMode, error) { |
| 375 | m.mu.RLock() |
| 376 | configPath := m.cfg.sourcePath |
| 377 | m.mu.RUnlock() |
| 378 | cfg, path, mode, err := loadConfigDocument(configPath) |
| 379 | if err != nil { |
| 380 | return Config{}, "", 0, err |
| 381 | } |
| 382 | return cfg, path, mode, nil |
| 383 | } |
| 384 | |
| 385 | func (m *manager) writeConfigAndApply(path string, mode os.FileMode, cfg Config) error { |
| 386 | cfg.sourcePath = path |
| 387 | if err := cfg.ApplyDefaults(path); err != nil { |
| 388 | return err |
| 389 | } |
| 390 | if err := cfg.Validate(); err != nil { |
| 391 | return err |
| 392 | } |
| 393 | if err := writeConfigDocument(path, mode, cfg); err != nil { |
| 394 | return err |
| 395 | } |
| 396 | return m.ApplyConfig(cfg) |
| 397 | } |
| 398 | |
| 399 | func (m *manager) ApplyConfig(cfg Config) error { |
| 400 | m.mu.Lock() |
| 401 | m.cfg = cfg |
| 402 | rootCtx := m.rootCtx |
| 403 | next := make(map[string]TunnelConfig, len(cfg.Tunnels)) |
| 404 | for _, tunnelCfg := range cfg.Tunnels { |
| 405 | next[tunnelCfg.ID] = tunnelCfg |
| 406 | } |
| 407 | toStop := make([]*managedTunnel, 0) |
| 408 | toStart := make([]*managedTunnel, 0) |
| 409 | toUpdate := make([]*managedTunnel, 0) |
| 410 | for id, tunnel := range m.tunnels { |
| 411 | tunnelCfg, ok := next[id] |
| 412 | if !ok { |
| 413 | toStop = append(toStop, tunnel) |
| 414 | delete(m.tunnels, id) |
| 415 | continue |
| 416 | } |
| 417 | tunnel.mu.Lock() |
| 418 | previous := tunnel.cfg |
| 419 | if !reflect.DeepEqual(previous, tunnelCfg) { |
| 420 | tunnel.cfg = tunnelCfg |
| 421 | toUpdate = append(toUpdate, tunnel) |
| 422 | } |
| 423 | tunnel.mu.Unlock() |
| 424 | delete(next, id) |
| 425 | } |
| 426 | for _, tunnelCfg := range next { |
| 427 | tunnel := newTunnel(tunnelCfg) |
| 428 | m.tunnels[tunnelCfg.ID] = tunnel |
| 429 | toStart = append(toStart, tunnel) |
| 430 | } |
| 431 | m.mu.Unlock() |
| 432 | |
| 433 | for _, tunnel := range append(toStop, toUpdate...) { |
| 434 | _ = tunnel.Stop(context.Background()) |
| 435 | } |
| 436 | if rootCtx == nil { |
| 437 | rootCtx = context.Background() |
| 438 | } |
| 439 | for _, tunnel := range append(toStart, toUpdate...) { |
| 440 | tunnel.Start(rootCtx) |
| 441 | } |
| 442 | return nil |
| 443 | } |
| 444 | |
| 445 | func (m *manager) Snapshot() types.AgentStatusResponse { |
| 446 | m.mu.RLock() |
| 447 | configPath := m.cfg.sourcePath |
| 448 | tunnels := make([]*managedTunnel, 0, len(m.tunnels)) |
| 449 | for _, tunnel := range m.tunnels { |
| 450 | tunnels = append(tunnels, tunnel) |
| 451 | } |
| 452 | m.mu.RUnlock() |
| 453 | |
| 454 | statuses := make([]types.AgentTunnelStatus, 0, len(tunnels)) |
| 455 | for _, tunnel := range tunnels { |
| 456 | statuses = append(statuses, tunnel.Snapshot()) |
| 457 | } |
| 458 | slices.SortFunc(statuses, func(a, b types.AgentTunnelStatus) int { |
| 459 | return strings.Compare(a.ID, b.ID) |
| 460 | }) |
| 461 | |
| 462 | return types.AgentStatusResponse{ |
| 463 | ConfigPath: configPath, |
| 464 | ControlAddr: m.controlAddr, |
| 465 | Tunnels: statuses, |
| 466 | } |
| 467 | } |
| 468 | |
| 469 | type managedTunnel struct { |
| 470 | mu sync.RWMutex |
| 471 | cfg TunnelConfig |
| 472 | |
| 473 | cancel context.CancelFunc |
| 474 | done chan struct{} |
| 475 | exposure *sdk.Exposure |
| 476 | lastError string |
| 477 | runtime types.AgentTunnelStatus |
| 478 | } |
| 479 | |
| 480 | func newTunnel(cfg TunnelConfig) *managedTunnel { |
| 481 | return &managedTunnel{ |
| 482 | cfg: cfg, |
| 483 | } |
| 484 | } |
| 485 | |
| 486 | func (t *managedTunnel) Start(parent context.Context) { |
| 487 | t.mu.Lock() |
| 488 | if t.done != nil { |
| 489 | t.mu.Unlock() |
| 490 | return |
| 491 | } |
| 492 | ctx, cancel := context.WithCancel(parent) |
| 493 | t.cancel = cancel |
| 494 | t.done = make(chan struct{}) |
| 495 | done := t.done |
| 496 | t.mu.Unlock() |
| 497 | |
| 498 | go func() { |
| 499 | defer close(done) |
| 500 | t.runLoop(ctx) |
| 501 | }() |
| 502 | } |
| 503 | |
| 504 | func (t *managedTunnel) Stop(ctx context.Context) error { |
| 505 | t.mu.Lock() |
| 506 | cancel := t.cancel |
| 507 | done := t.done |
| 508 | t.cancel = nil |
| 509 | t.done = nil |
| 510 | if cancel != nil { |
| 511 | cancel() |
| 512 | } |
| 513 | t.mu.Unlock() |
| 514 | |
| 515 | if done == nil { |
| 516 | return nil |
| 517 | } |
| 518 | select { |
| 519 | case <-done: |
| 520 | return nil |
| 521 | case <-ctx.Done(): |
| 522 | return ctx.Err() |
| 523 | } |
| 524 | } |
| 525 | |
| 526 | func (t *managedTunnel) ConnectRelay(relayURL string) error { |
| 527 | t.mu.RLock() |
| 528 | exposure := t.exposure |
| 529 | t.mu.RUnlock() |
| 530 | if exposure == nil { |
| 531 | return nil |
| 532 | } |
| 533 | return exposure.AddRelay(relayURL) |
| 534 | } |
| 535 | |
| 536 | func (t *managedTunnel) DisconnectRelay(relayURL string) error { |
| 537 | t.mu.RLock() |
| 538 | exposure := t.exposure |
| 539 | t.mu.RUnlock() |
| 540 | if exposure == nil { |
| 541 | return nil |
| 542 | } |
| 543 | return exposure.RemoveRelay(relayURL) |
| 544 | } |
| 545 | |
| 546 | func (t *managedTunnel) SetMultiHop(relayURLs []string) error { |
| 547 | t.mu.RLock() |
| 548 | exposure := t.exposure |
| 549 | t.mu.RUnlock() |
| 550 | if exposure == nil { |
| 551 | return nil |
| 552 | } |
| 553 | return exposure.SetMultiHop(relayURLs) |
| 554 | } |
| 555 | |
| 556 | func (t *managedTunnel) UpdateSettings(updateMetadata, updateMaxActiveRelays bool) error { |
| 557 | t.mu.RLock() |
| 558 | exposure := t.exposure |
| 559 | cfg := t.cfg |
| 560 | t.mu.RUnlock() |
| 561 | if exposure == nil { |
| 562 | return nil |
| 563 | } |
| 564 | var err error |
| 565 | if updateMetadata { |
| 566 | err = errors.Join(err, exposure.UpdateMetadata(metadataFromTunnelConfig(cfg))) |
| 567 | } |
| 568 | if updateMaxActiveRelays { |
| 569 | err = errors.Join(err, exposure.UpdateMaxActiveRelays(cfg.MaxActiveRelays)) |
| 570 | } |
| 571 | return err |
| 572 | } |
| 573 | |
| 574 | func (t *managedTunnel) Snapshot() types.AgentTunnelStatus { |
| 575 | t.mu.RLock() |
| 576 | cfg := t.cfg |
| 577 | lastError := t.lastError |
| 578 | exposure := t.exposure |
| 579 | done := t.done |
| 580 | runtime := t.runtime |
| 581 | t.mu.RUnlock() |
| 582 | |
| 583 | running := false |
| 584 | if done != nil { |
| 585 | select { |
| 586 | case <-done: |
| 587 | default: |
| 588 | running = true |
| 589 | } |
| 590 | } |
| 591 | |
| 592 | state := "stopped" |
| 593 | switch { |
| 594 | case lastError != "": |
| 595 | state = "error" |
| 596 | case exposure != nil: |
| 597 | state = "running" |
| 598 | case running: |
| 599 | state = "starting" |
| 600 | } |
| 601 | discovery := true |
| 602 | if cfg.Discovery != nil { |
| 603 | discovery = *cfg.Discovery |
| 604 | } |
| 605 | |
| 606 | status := types.AgentTunnelStatus{ |
| 607 | ID: cfg.ID, |
| 608 | Name: cfg.Name, |
| 609 | State: state, |
| 610 | TargetAddr: cfg.TargetAddr, |
| 611 | LastError: lastError, |
| 612 | Discovery: discovery, |
| 613 | MaxActiveRelays: cfg.MaxActiveRelays, |
| 614 | Metadata: metadataFromTunnelConfig(cfg), |
| 615 | MultiHop: append([]string(nil), cfg.MultiHop...), |
| 616 | X402PayTo: strings.TrimSpace(cfg.X402PayTo), |
| 617 | X402Testnet: cfg.X402Testnet, |
| 618 | } |
| 619 | if len(cfg.HTTPRoutes) > 0 { |
| 620 | status.HTTPRoutes = make([]types.AgentHTTPRoute, 0, len(cfg.HTTPRoutes)) |
| 621 | for _, route := range cfg.HTTPRoutes { |
| 622 | status.HTTPRoutes = append(status.HTTPRoutes, types.AgentHTTPRoute{ |
| 623 | Prefix: route.Prefix, |
| 624 | Upstream: route.Upstream, |
| 625 | Methods: append([]string(nil), route.Methods...), |
| 626 | Amount: route.Amount, |
| 627 | }) |
| 628 | } |
| 629 | } |
| 630 | if exposure == nil { |
| 631 | if strings.TrimSpace(runtime.Address) != "" { |
| 632 | status.Address = runtime.Address |
| 633 | } |
| 634 | if strings.TrimSpace(runtime.TargetAddr) != "" { |
| 635 | status.TargetAddr = runtime.TargetAddr |
| 636 | } |
| 637 | if cfg.MultiHopDepth > 1 && len(runtime.MultiHop) > 0 { |
| 638 | status.MultiHop = append([]string(nil), runtime.MultiHop...) |
| 639 | } |
| 640 | status.Relays = append([]types.AgentRelayStatus(nil), runtime.Relays...) |
| 641 | return status |
| 642 | } |
| 643 | snapshot := exposure.Snapshot() |
| 644 | t.mu.Lock() |
| 645 | if t.exposure == exposure { |
| 646 | t.runtime = types.AgentTunnelStatus{ |
| 647 | Address: snapshot.Address, |
| 648 | TargetAddr: snapshot.TargetAddr, |
| 649 | MaxActiveRelays: snapshot.MaxActiveRelays, |
| 650 | MultiHop: append([]string(nil), snapshot.MultiHop...), |
| 651 | Relays: append([]types.AgentRelayStatus(nil), snapshot.Relays...), |
| 652 | } |
| 653 | } |
| 654 | t.mu.Unlock() |
| 655 | |
| 656 | status.Address = snapshot.Address |
| 657 | status.TargetAddr = snapshot.TargetAddr |
| 658 | status.MultiHop = append([]string(nil), snapshot.MultiHop...) |
| 659 | status.Relays = append([]types.AgentRelayStatus(nil), snapshot.Relays...) |
| 660 | return status |
| 661 | } |
| 662 | |
| 663 | func (t *managedTunnel) runLoop(ctx context.Context) { |
| 664 | for { |
| 665 | err := t.runOnce(ctx) |
| 666 | |
| 667 | t.mu.Lock() |
| 668 | t.exposure = nil |
| 669 | if ctx.Err() != nil || errors.Is(err, context.Canceled) || err == nil { |
| 670 | t.lastError = "" |
| 671 | } else { |
| 672 | t.lastError = err.Error() |
| 673 | } |
| 674 | t.mu.Unlock() |
| 675 | |
| 676 | if ctx.Err() != nil || errors.Is(err, context.Canceled) || err == nil { |
| 677 | return |
| 678 | } |
| 679 | log.Warn().Err(err).Msg("managed tunnel stopped with error; retrying") |
| 680 | if !utils.SleepOrDone(ctx, managedTunnelRetryInterval) { |
| 681 | return |
| 682 | } |
| 683 | } |
| 684 | } |
| 685 | |
| 686 | func (t *managedTunnel) runOnce(ctx context.Context) error { |
| 687 | t.mu.Lock() |
| 688 | cfg := t.cfg |
| 689 | t.lastError = "" |
| 690 | t.mu.Unlock() |
| 691 | |
| 692 | discovery := true |
| 693 | if cfg.Discovery != nil { |
| 694 | discovery = *cfg.Discovery |
| 695 | } |
| 696 | banMITM := false |
| 697 | if cfg.BanMITM != nil { |
| 698 | banMITM = *cfg.BanMITM |
| 699 | } |
| 700 | exposure, err := sdk.Expose(ctx, sdk.ExposeConfig{ |
| 701 | RelayURLs: append([]string(nil), cfg.RelayURLs...), |
| 702 | Discovery: discovery, |
| 703 | Identity: types.Identity{Name: cfg.Name}, |
| 704 | IdentityPath: cfg.IdentityPath, |
| 705 | IdentityJSON: cfg.IdentityJSON, |
| 706 | TargetAddr: cfg.TargetAddr, |
| 707 | UDPAddr: cfg.UDPAddr, |
| 708 | UDPEnabled: cfg.UDPEnabled, |
| 709 | TCPEnabled: cfg.TCPEnabled, |
| 710 | MultiHop: append([]string(nil), cfg.MultiHop...), |
| 711 | MultiHopDepth: cfg.MultiHopDepth, |
| 712 | BanMITM: banMITM, |
| 713 | MaxActiveRelays: cfg.MaxActiveRelays, |
| 714 | Metadata: metadataFromTunnelConfig(cfg), |
| 715 | X402PayTo: cfg.X402PayTo, |
| 716 | X402Testnet: cfg.X402Testnet, |
| 717 | }) |
| 718 | if err != nil { |
| 719 | return err |
| 720 | } |
| 721 | snapshot := exposure.Snapshot() |
| 722 | t.mu.Lock() |
| 723 | t.exposure = exposure |
| 724 | t.runtime = types.AgentTunnelStatus{ |
| 725 | Address: snapshot.Address, |
| 726 | TargetAddr: snapshot.TargetAddr, |
| 727 | MaxActiveRelays: snapshot.MaxActiveRelays, |
| 728 | MultiHop: append([]string(nil), snapshot.MultiHop...), |
| 729 | Relays: append([]types.AgentRelayStatus(nil), snapshot.Relays...), |
| 730 | } |
| 731 | t.lastError = "" |
| 732 | t.mu.Unlock() |
| 733 | |
| 734 | defer exposure.Close() |
| 735 | |
| 736 | if len(cfg.HTTPRoutes) > 0 { |
| 737 | routes := make([]sdk.HTTPRouteConfig, 0, len(cfg.HTTPRoutes)) |
| 738 | for _, route := range cfg.HTTPRoutes { |
| 739 | routes = append(routes, sdk.HTTPRouteConfig{ |
| 740 | Prefix: route.Prefix, |
| 741 | Upstream: route.Upstream, |
| 742 | Methods: route.Methods, |
| 743 | Amount: route.Amount, |
| 744 | }) |
| 745 | } |
| 746 | err = exposure.RunHTTPRoutes(ctx, routes, "") |
| 747 | } else { |
| 748 | err = sdk.ProxyExposure(ctx, exposure) |
| 749 | } |
| 750 | if ctx.Err() != nil || errors.Is(err, context.Canceled) { |
| 751 | return ctx.Err() |
| 752 | } |
| 753 | return err |
| 754 | } |
| 755 | |
| 756 | func metadataFromTunnelConfig(cfg TunnelConfig) types.LeaseMetadata { |
| 757 | return types.LeaseMetadata{ |
| 758 | Description: strings.TrimSpace(cfg.Description), |
| 759 | Tags: normalizeAgentMetadataTags(cfg.Tags), |
| 760 | Owner: strings.TrimSpace(cfg.Owner), |
| 761 | Thumbnail: strings.TrimSpace(cfg.Thumbnail), |
| 762 | Hide: cfg.Hide, |
| 763 | } |
| 764 | } |
| 765 | |
| 766 | func normalizeAgentMetadataTags(tags []string) []string { |
| 767 | if len(tags) == 0 { |
| 768 | return nil |
| 769 | } |
| 770 | out := make([]string, 0, len(tags)) |
| 771 | for _, tag := range tags { |
| 772 | if tag = strings.TrimSpace(tag); tag != "" { |
| 773 | out = append(out, tag) |
| 774 | } |
| 775 | } |
| 776 | if len(out) == 0 { |
| 777 | return nil |
| 778 | } |
| 779 | return out |
| 780 | } |