| 1 | package main |
| 2 | |
| 3 | import ( |
| 4 | "bytes" |
| 5 | "crypto/hmac" |
| 6 | "crypto/rand" |
| 7 | "crypto/sha256" |
| 8 | "encoding/binary" |
| 9 | "encoding/hex" |
| 10 | "encoding/json" |
| 11 | "fmt" |
| 12 | "io" |
| 13 | "log" |
| 14 | "maps" |
| 15 | "net" |
| 16 | "net/http" |
| 17 | "net/http/httputil" |
| 18 | "net/url" |
| 19 | "strconv" |
| 20 | "strings" |
| 21 | "sync" |
| 22 | "time" |
| 23 | |
| 24 | "reasonix/internal/config" |
| 25 | "reasonix/internal/netclient" |
| 26 | ) |
| 27 | |
| 28 | // Local-proxy mode tunnels model calls to this desktop, which swaps a scoped |
| 29 | // virtual token for the real provider key. The real key never leaves desktop. |
| 30 | |
| 31 | // credentialProxyProviderName is the provider entry the bootstrap installs in |
| 32 | // the remote config; the serve launches with --model <name>. |
| 33 | const credentialProxyProviderName = "reasonix-desktop-proxy" |
| 34 | |
| 35 | type credProxyRoute struct { |
| 36 | modelSnapshot *config.Config |
| 37 | proxy *httputil.ReverseProxy |
| 38 | model string |
| 39 | ref string |
| 40 | apiKeyEnv string |
| 41 | provider string |
| 42 | origins map[string]bool |
| 43 | scope string |
| 44 | revision string |
| 45 | active int |
| 46 | retired bool |
| 47 | extraBody map[string]any |
| 48 | host string |
| 49 | workspace string |
| 50 | holds map[string]bool |
| 51 | } |
| 52 | |
| 53 | // credentialProxy is the desktop-side key holder: a loopback HTTP endpoint |
| 54 | // that authenticates requests by virtual token and forwards them to the real |
| 55 | // provider with the real key. One instance serves the whole app. |
| 56 | type credentialProxy struct { |
| 57 | mu sync.Mutex |
| 58 | updateMu sync.Mutex |
| 59 | ln net.Listener |
| 60 | server *http.Server |
| 61 | port int |
| 62 | routes map[string]*credProxyRoute |
| 63 | ownership map[string]*credentialProxyOwnership |
| 64 | modelSettingsSource func(http.ResponseWriter, *http.Request, *credProxyRoute) |
| 65 | } |
| 66 | |
| 67 | func (p *credentialProxy) ServeHTTP(w http.ResponseWriter, r *http.Request) { |
| 68 | // Unauthenticated liveness endpoint for the desktop's reverse-tunnel |
| 69 | // probe: the listener only exists behind the SSH reverse forward, so a |
| 70 | // 204 here proves serve → remote loopback → tunnel → desktop end to end. |
| 71 | if r.URL.Path == "/healthz" { |
| 72 | w.WriteHeader(http.StatusNoContent) |
| 73 | return |
| 74 | } |
| 75 | token := bearerToken(r.Header.Get("Authorization")) |
| 76 | p.mu.Lock() |
| 77 | route := p.routes[token] |
| 78 | if route != nil && !route.retired { |
| 79 | route.active++ |
| 80 | } else { |
| 81 | route = nil |
| 82 | } |
| 83 | routeCount := len(p.routes) |
| 84 | p.mu.Unlock() |
| 85 | if route == nil { |
| 86 | log.Printf("[remote] credProxy: rejected %s %s routeCount=%d", r.Method, r.URL.Path, routeCount) |
| 87 | http.Error(w, "invalid credential proxy token", http.StatusUnauthorized) |
| 88 | return |
| 89 | } |
| 90 | defer func() { |
| 91 | p.mu.Lock() |
| 92 | route.active-- |
| 93 | if route.retired && route.active == 0 && p.routes[token] == route { |
| 94 | delete(p.routes, token) |
| 95 | } |
| 96 | p.mu.Unlock() |
| 97 | }() |
| 98 | if r.URL.Path == "/model-settings-source" && p.modelSettingsSource != nil { |
| 99 | p.modelSettingsSource(w, r, route) |
| 100 | return |
| 101 | } |
| 102 | if original := r.Header.Get(netclient.ModelProxyOriginalURLHeader); original != "" { |
| 103 | u, err := url.Parse(original) |
| 104 | if err != nil || u.User != nil || u.Fragment != "" || !route.origins[u.Scheme+"://"+u.Host] { |
| 105 | http.Error(w, "invalid model credential proxy destination", http.StatusForbidden) |
| 106 | return |
| 107 | } |
| 108 | } |
| 109 | if route.model != "" && r.Body != nil && (r.Method == http.MethodPost || r.Method == http.MethodPut) { |
| 110 | const rewriteLimit = 64 << 20 |
| 111 | if r.ContentLength > rewriteLimit { |
| 112 | http.Error(w, "credential proxy request body is too large", http.StatusRequestEntityTooLarge) |
| 113 | return |
| 114 | } |
| 115 | buffered, err := io.ReadAll(io.LimitReader(r.Body, rewriteLimit+1)) |
| 116 | switch { |
| 117 | case err != nil: |
| 118 | _ = r.Body.Close() |
| 119 | http.Error(w, "credential proxy could not read request body", http.StatusBadRequest) |
| 120 | return |
| 121 | case int64(len(buffered)) > rewriteLimit: |
| 122 | _ = r.Body.Close() |
| 123 | http.Error(w, "credential proxy request body is too large", http.StatusRequestEntityTooLarge) |
| 124 | return |
| 125 | default: |
| 126 | _ = r.Body.Close() |
| 127 | body := rewriteJSONModel(buffered, route.model) |
| 128 | if len(route.extraBody) > 0 { |
| 129 | var payload map[string]any |
| 130 | if json.Unmarshal(body, &payload) == nil && payload != nil { |
| 131 | maps.Copy(payload, route.extraBody) |
| 132 | if encoded, err := json.Marshal(payload); err == nil { |
| 133 | body = encoded |
| 134 | } |
| 135 | } |
| 136 | } |
| 137 | r.Body = io.NopCloser(bytes.NewReader(body)) |
| 138 | r.ContentLength = int64(len(body)) |
| 139 | r.Header.Set("Content-Length", strconv.Itoa(len(body))) |
| 140 | } |
| 141 | } |
| 142 | route.proxy.ServeHTTP(w, r) |
| 143 | } |
| 144 | |
| 145 | func rewriteJSONModel(body []byte, model string) []byte { |
| 146 | if model == "" || len(body) == 0 { |
| 147 | return body |
| 148 | } |
| 149 | var payload map[string]any |
| 150 | if err := json.Unmarshal(body, &payload); err != nil || payload == nil { |
| 151 | // Unparseable or a literal null body ("null" decodes into a nil |
| 152 | // map): assigning into nil would panic, and there is nothing to |
| 153 | // rewrite — pass the body through untouched. |
| 154 | return body |
| 155 | } |
| 156 | if current, ok := payload["model"].(string); ok && current == model { |
| 157 | return body |
| 158 | } |
| 159 | payload["model"] = model |
| 160 | out, err := json.Marshal(payload) |
| 161 | if err != nil { |
| 162 | return body |
| 163 | } |
| 164 | return out |
| 165 | } |
| 166 | |
| 167 | func (p *credentialProxy) setRoute(token, ref string, upstream *url.URL, apiKey, model, kind string) { |
| 168 | p.updateMu.Lock() |
| 169 | defer p.updateMu.Unlock() |
| 170 | p.setRouteLocked(token, ref, proxyUpstream{url: upstream, apiKey: apiKey, model: model, kind: kind}) |
| 171 | } |
| 172 | |
| 173 | func (p *credentialProxy) resolveAndSetRoute(token, ref string, resolve func() (proxyUpstream, error)) (proxyUpstream, error) { |
| 174 | p.updateMu.Lock() |
| 175 | defer p.updateMu.Unlock() |
| 176 | up, err := resolve() |
| 177 | if err != nil { |
| 178 | return proxyUpstream{}, err |
| 179 | } |
| 180 | if err := p.validateModelSettingsOfferCapacity(up); err != nil { |
| 181 | return proxyUpstream{}, err |
| 182 | } |
| 183 | p.setRouteLocked(token, ref, up) |
| 184 | return up, nil |
| 185 | } |
| 186 | |
| 187 | func (p *credentialProxy) setRouteLocked(token, ref string, up proxyUpstream) { |
| 188 | if up.kind == "" { |
| 189 | up.kind = "openai" |
| 190 | } |
| 191 | proxy := &httputil.ReverseProxy{FlushInterval: -1} |
| 192 | proxy.Rewrite = func(req *httputil.ProxyRequest) { |
| 193 | req.SetURL(up.url) |
| 194 | if original := req.In.Header.Get(netclient.ModelProxyOriginalURLHeader); original != "" { |
| 195 | // ServeHTTP validated the destination against this frozen route. |
| 196 | req.Out.URL, _ = url.Parse(original) |
| 197 | } else if up.requestURL != nil { |
| 198 | req.Out.URL = new(url.URL) |
| 199 | *req.Out.URL = *up.requestURL |
| 200 | } |
| 201 | req.Out.Header.Del(netclient.ModelProxyOriginalURLHeader) |
| 202 | for _, header := range []string{"Forwarded", "X-Forwarded-For", "X-Forwarded-Host", "X-Forwarded-Proto", "X-Real-IP", "Via"} { |
| 203 | req.Out.Header.Del(header) |
| 204 | } |
| 205 | if up.kind == "anthropic" && !up.authHeader { |
| 206 | req.Out.Header.Del("Authorization") |
| 207 | req.Out.Header.Set("x-api-key", up.apiKey) |
| 208 | req.Out.Header.Set("anthropic-version", "2023-06-01") |
| 209 | } else { |
| 210 | req.Out.Header.Del("x-api-key") |
| 211 | req.Out.Header.Set("Authorization", "Bearer "+up.apiKey) |
| 212 | } |
| 213 | for name, value := range up.headers { |
| 214 | req.Out.Header.Set(name, value) |
| 215 | } |
| 216 | } |
| 217 | p.mu.Lock() |
| 218 | defer p.mu.Unlock() |
| 219 | // A token is a connection version. Re-registration must never redirect |
| 220 | // requests already accepted by a runtime holding that token. |
| 221 | if route := p.routes[token]; route != nil { |
| 222 | if up.offerID != "" { |
| 223 | if route.holds == nil { |
| 224 | route.holds = map[string]bool{} |
| 225 | } |
| 226 | route.holds[up.offerID] = true |
| 227 | route.retired = false |
| 228 | } |
| 229 | return |
| 230 | } |
| 231 | origins := map[string]bool{up.url.Scheme + "://" + up.url.Host: true} |
| 232 | if up.requestURL != nil { |
| 233 | origins[up.requestURL.Scheme+"://"+up.requestURL.Host] = true |
| 234 | } |
| 235 | p.routes[token] = &credProxyRoute{ |
| 236 | modelSnapshot: up.modelSnapshot, |
| 237 | proxy: proxy, model: up.model, ref: ref, |
| 238 | apiKeyEnv: strings.TrimSpace(up.apiKeyEnv), provider: strings.TrimSpace(up.provider), |
| 239 | origins: origins, |
| 240 | scope: up.scope, revision: up.revision, extraBody: up.extraBody, |
| 241 | host: up.host, workspace: up.workspace, holds: map[string]bool{}, |
| 242 | } |
| 243 | if up.offerID != "" { |
| 244 | p.routes[token].holds[up.offerID] = true |
| 245 | } |
| 246 | } |
| 247 | |
| 248 | func (p *credentialProxy) close() { |
| 249 | p.mu.Lock() |
| 250 | server, listener := p.server, p.ln |
| 251 | p.server, p.ln = nil, nil |
| 252 | p.mu.Unlock() |
| 253 | if server != nil { |
| 254 | _ = server.Close() |
| 255 | } |
| 256 | if listener != nil { |
| 257 | _ = listener.Close() |
| 258 | } |
| 259 | } |
| 260 | |
| 261 | func bearerToken(header string) string { |
| 262 | prefix, value, ok := strings.Cut(strings.TrimSpace(header), " ") |
| 263 | if !ok || !strings.EqualFold(prefix, "Bearer") { |
| 264 | return "" |
| 265 | } |
| 266 | return strings.TrimSpace(value) |
| 267 | } |
| 268 | |
| 269 | // credentialProxyPort returns the proxy's loopback port, starting the proxy |
| 270 | // on first use. |
| 271 | func (a *App) credentialProxyPort() (int, error) { |
| 272 | a.credProxyMu.Lock() |
| 273 | defer a.credProxyMu.Unlock() |
| 274 | if a.credProxy != nil { |
| 275 | return a.credProxy.port, nil |
| 276 | } |
| 277 | ln, err := net.Listen("tcp", "127.0.0.1:0") |
| 278 | if err != nil { |
| 279 | return 0, fmt.Errorf("credential proxy: listen: %w", err) |
| 280 | } |
| 281 | p := &credentialProxy{ln: ln, port: ln.Addr().(*net.TCPAddr).Port, routes: map[string]*credProxyRoute{}} |
| 282 | p.modelSettingsSource = a.serveModelSettingsSource |
| 283 | server := &http.Server{ |
| 284 | Handler: p, |
| 285 | ReadHeaderTimeout: 10 * time.Second, |
| 286 | IdleTimeout: 2 * time.Minute, |
| 287 | MaxHeaderBytes: 1 << 20, |
| 288 | } |
| 289 | p.server = server |
| 290 | a.credProxy = p |
| 291 | a.goSafe("credentialProxy", func() { _ = server.Serve(ln) }) |
| 292 | return p.port, nil |
| 293 | } |
| 294 | |
| 295 | func (a *App) closeCredentialProxy() { |
| 296 | a.credProxyMu.Lock() |
| 297 | defer a.credProxyMu.Unlock() |
| 298 | if a.credProxy != nil { |
| 299 | a.credProxy.close() |
| 300 | a.credProxy = nil |
| 301 | } |
| 302 | } |
| 303 | |
| 304 | // credentialProxySecret loads (creating on first use) the persisted random |
| 305 | // secret every virtual token derives from. Rotating it revokes all tokens. |
| 306 | func (a *App) credentialProxySecret() (string, error) { |
| 307 | remotePrefsMu.Lock() |
| 308 | defer remotePrefsMu.Unlock() |
| 309 | p, err := updateRemotePrefsLocked(func(p *remotePrefs) (bool, error) { |
| 310 | if p.CredentialProxySecret != "" { |
| 311 | return false, nil |
| 312 | } |
| 313 | buf := make([]byte, 32) |
| 314 | if _, err := rand.Read(buf); err != nil { |
| 315 | return false, fmt.Errorf("credential proxy: generate secret: %w", err) |
| 316 | } |
| 317 | p.CredentialProxySecret = hex.EncodeToString(buf) |
| 318 | return true, nil |
| 319 | }) |
| 320 | if err != nil { |
| 321 | return "", fmt.Errorf("credential proxy: persist secret: %w", err) |
| 322 | } |
| 323 | return p.CredentialProxySecret, nil |
| 324 | } |
| 325 | |
| 326 | // credentialProxyModelTokenFor gives each staged model an immutable route. |
| 327 | // A controller already running with the previous virtual token therefore keeps |
| 328 | // its old upstream for the whole turn while Serve builds and publishes the new |
| 329 | // controller. This is the cross-process half of failure-atomic model switches. |
| 330 | func credentialProxyModelTokenFor(secret, hostID, workspace, modelRef string, revisions ...string) string { |
| 331 | mac := hmac.New(sha256.New, []byte(secret)) |
| 332 | _, _ = mac.Write([]byte("reasonix-credential-proxy-model:v3")) |
| 333 | for _, field := range append([]string{hostID, workspace, modelRef}, revisions...) { |
| 334 | var size [8]byte |
| 335 | binary.BigEndian.PutUint64(size[:], uint64(len(field))) |
| 336 | _, _ = mac.Write(size[:]) |
| 337 | _, _ = mac.Write([]byte(field)) |
| 338 | } |
| 339 | return hex.EncodeToString(mac.Sum(nil))[:32] |
| 340 | } |
| 341 | |
| 342 | // credentialProxyRouteInfo is everything a serve bootstrap needs to install |
| 343 | // the desktop hop on the remote: the virtual token, the model name and |
| 344 | // provider kind the remote provider entry should carry, and the proxy's |
| 345 | // loopback port. |
| 346 | type credentialProxyRouteInfo struct { |
| 347 | token string |
| 348 | model string |
| 349 | kind string |
| 350 | port int |
| 351 | revision string |
| 352 | } |
| 353 | |
| 354 | // proxyUpstream is the resolved desktop-side provider a route forwards to. |
| 355 | type proxyUpstream struct { |
| 356 | modelSnapshot *config.Config |
| 357 | host, workspace, offerID string |
| 358 | apiKey string |
| 359 | url *url.URL |
| 360 | model string |
| 361 | kind string |
| 362 | apiKeyEnv string |
| 363 | provider string |
| 364 | requestURL *url.URL |
| 365 | headers map[string]string |
| 366 | extraBody map[string]any |
| 367 | authHeader bool |
| 368 | scope string |
| 369 | revision string |
| 370 | } |
| 371 | |
| 372 | // resolveProxyProvider resolves a desktop model ref into the upstream the |
| 373 | // credential proxy should forward to, including the auth-header shape its |
| 374 | // provider kind expects. |
| 375 | func resolveProxyProvider(cfg *config.Config, ref string) (proxyUpstream, error) { |
| 376 | entry, ok := cfg.ResolveModel(ref) |
| 377 | if !ok { |
| 378 | return proxyUpstream{}, fmt.Errorf("credential proxy: model %q has no provider", ref) |
| 379 | } |
| 380 | apiKey := entry.APIKey() |
| 381 | if apiKey == "" { |
| 382 | return proxyUpstream{}, fmt.Errorf("credential proxy: the local provider credential is not configured") |
| 383 | } |
| 384 | base := strings.TrimSpace(entry.BaseURL) |
| 385 | if base == "" { |
| 386 | base = "https://api.openai.com" |
| 387 | } |
| 388 | upstream, err := url.Parse(strings.TrimRight(base, "/") + "/") |
| 389 | if err != nil { |
| 390 | return proxyUpstream{}, fmt.Errorf("credential proxy: provider base_url: %w", err) |
| 391 | } |
| 392 | if (upstream.Scheme != "http" && upstream.Scheme != "https") || upstream.Host == "" || upstream.User != nil || upstream.Fragment != "" { |
| 393 | return proxyUpstream{}, fmt.Errorf("credential proxy: provider base_url must be an http(s) URL without credentials or a fragment") |
| 394 | } |
| 395 | kind := strings.TrimSpace(entry.Kind) |
| 396 | if kind == "" { |
| 397 | kind = "openai" |
| 398 | } |
| 399 | var exactURL *url.URL |
| 400 | if exact := config.ProviderEffectiveRequestURL(entry); exact != "" { |
| 401 | exactURL, err = url.Parse(exact) |
| 402 | if err != nil || (exactURL.Scheme != "http" && exactURL.Scheme != "https") || exactURL.Host == "" || exactURL.User != nil || exactURL.Fragment != "" { |
| 403 | return proxyUpstream{}, fmt.Errorf("credential proxy: invalid request URL") |
| 404 | } |
| 405 | } |
| 406 | return proxyUpstream{ |
| 407 | modelSnapshot: cfg, |
| 408 | apiKey: apiKey, url: upstream, model: entry.Model, kind: kind, |
| 409 | apiKeyEnv: entry.APIKeyEnv, provider: entry.Name, |
| 410 | requestURL: exactURL, headers: entry.Headers, extraBody: entry.ExtraBody, authHeader: entry.AuthHeader, |
| 411 | }, nil |
| 412 | } |
| 413 | |
| 414 | // registerCredentialProxyRoute binds one workspace token to the current |
| 415 | // desktop default provider without exposing its real key to the remote. |
| 416 | func (a *App) registerCredentialProxyRoute(hostID, workspace string) (credentialProxyRouteInfo, error) { |
| 417 | cfg, err := config.Load() |
| 418 | if err != nil { |
| 419 | return credentialProxyRouteInfo{}, err |
| 420 | } |
| 421 | ref := strings.TrimSpace(cfg.DefaultModel) |
| 422 | if workspaceModel := a.desktopModelForWorkspace(hostID, workspace); workspaceModel != "" { |
| 423 | ref = workspaceModel |
| 424 | } |
| 425 | return a.applyCredentialProxyModel(hostID, workspace, ref) |
| 426 | } |
| 427 | |
| 428 | // desktopModelForWorkspace deterministically selects the newest tab-owned |
| 429 | // model for a workspace; map iteration order must never choose a route. |
| 430 | func (a *App) desktopModelForWorkspace(hostID, workspace string) string { |
| 431 | a.remoteTabMu.Lock() |
| 432 | defer a.remoteTabMu.Unlock() |
| 433 | var selected string |
| 434 | var selectedSeq uint64 |
| 435 | for _, tab := range a.remoteTabs { |
| 436 | if tab == nil || tab.ref.HostID != hostID || tab.ref.Workspace != workspace || strings.TrimSpace(tab.model) == "" { |
| 437 | continue |
| 438 | } |
| 439 | if tab.modelSeq >= selectedSeq { |
| 440 | selected, selectedSeq = tab.model, tab.modelSeq |
| 441 | } |
| 442 | } |
| 443 | return selected |
| 444 | } |
| 445 | |
| 446 | func (a *App) applyCredentialProxyModel(hostID, workspace, ref string) (credentialProxyRouteInfo, error) { |
| 447 | cfg, err := config.LoadModelRuntimeSnapshot(".") |
| 448 | if err != nil { |
| 449 | return credentialProxyRouteInfo{}, err |
| 450 | } |
| 451 | return a.applyCredentialProxySnapshot(hostID, workspace, ref, cfg) |
| 452 | } |
| 453 | |
| 454 | func (a *App) applyCredentialProxySnapshot(hostID, workspace, ref string, cfg *config.Config, generation ...string) (credentialProxyRouteInfo, error) { |
| 455 | port, err := a.credentialProxyPort() |
| 456 | if err != nil { |
| 457 | return credentialProxyRouteInfo{}, err |
| 458 | } |
| 459 | a.credProxyMu.Lock() |
| 460 | proxy := a.credProxy |
| 461 | a.credProxyMu.Unlock() |
| 462 | if proxy == nil { |
| 463 | return credentialProxyRouteInfo{}, fmt.Errorf("credential proxy: not running") |
| 464 | } |
| 465 | // Route tokens include the canonical desktop model ref. Never mutate the |
| 466 | // route held by an in-flight controller during a model switch. |
| 467 | secret, err := a.credentialProxySecret() |
| 468 | if err != nil { |
| 469 | return credentialProxyRouteInfo{}, err |
| 470 | } |
| 471 | revision := cfg.ModelRuntimeFingerprint(ref) |
| 472 | if len(generation) > 0 { |
| 473 | revision = generation[0] |
| 474 | } |
| 475 | token := credentialProxyModelTokenFor(secret, hostID, workspace, ref, revision) |
| 476 | up, err := proxy.resolveAndSetRoute(token, ref, func() (proxyUpstream, error) { |
| 477 | up, err := resolveProxyProvider(cfg, ref) |
| 478 | up.scope, up.revision = credentialProxyScope(hostID, workspace), revision |
| 479 | up.host, up.workspace = hostID, workspace |
| 480 | if len(generation) > 1 { |
| 481 | up.offerID = generation[1] |
| 482 | } |
| 483 | return up, err |
| 484 | }) |
| 485 | if err != nil { |
| 486 | return credentialProxyRouteInfo{}, err |
| 487 | } |
| 488 | return credentialProxyRouteInfo{token: token, model: up.model, kind: up.kind, port: port, revision: revision}, nil |
| 489 | } |
| 490 | |
| 491 | // saveProviderCredential writes only the credential store. Existing routes own |
| 492 | // their frozen upstream until the corresponding remote runtime is retired. |
| 493 | func (a *App) saveProviderCredential(apiKeyEnv, value string) (string, error) { |
| 494 | apiKeyEnv = strings.TrimSpace(apiKeyEnv) |
| 495 | value = strings.TrimSpace(value) |
| 496 | if err := upsertDotEnv(apiKeyEnv, value); err != nil { |
| 497 | return "", err |
| 498 | } |
| 499 | return providerCredentialSourceNotice(apiKeyEnv, value), nil |
| 500 | } |
| 501 | |
| 502 | // credentialModeView returns the host entry's normalized credential mode for |
| 503 | // views ("" reads as "remote" — the default). |
| 504 | func credentialModeView(h config.RemoteHostEntry) string { |
| 505 | if h.CredentialProxyEnabled() { |
| 506 | return "local-proxy" |
| 507 | } |
| 508 | return "remote" |
| 509 | } |
| 510 | |
| 511 | // normalizeCredentialMode validates an input credential mode. |
| 512 | func normalizeCredentialMode(mode string) string { |
| 513 | switch strings.ToLower(strings.TrimSpace(mode)) { |
| 514 | case "local-proxy": |
| 515 | return "local-proxy" |
| 516 | default: |
| 517 | return "" |
| 518 | } |
| 519 | } |
| 520 |