| 1 | package main |
| 2 | |
| 3 | import ( |
| 4 | "archive/tar" |
| 5 | "bytes" |
| 6 | "compress/gzip" |
| 7 | "context" |
| 8 | "crypto/sha256" |
| 9 | "encoding/hex" |
| 10 | "encoding/json" |
| 11 | "errors" |
| 12 | "fmt" |
| 13 | "io" |
| 14 | "net/http" |
| 15 | "net/url" |
| 16 | "os" |
| 17 | "path" |
| 18 | "path/filepath" |
| 19 | "regexp" |
| 20 | "runtime" |
| 21 | "strconv" |
| 22 | "strings" |
| 23 | "time" |
| 24 | |
| 25 | "golang.org/x/mod/semver" |
| 26 | |
| 27 | "reasonix/desktop/internal/update" |
| 28 | "reasonix/internal/config" |
| 29 | "reasonix/internal/installlayout" |
| 30 | "reasonix/internal/netclient" |
| 31 | "reasonix/internal/repair" |
| 32 | ) |
| 33 | |
| 34 | // updater.go is the transport-free core of the desktop auto-updater: manifest |
| 35 | // fetch, version comparison, signed download, and per-platform apply/relaunch. It |
| 36 | // has no shell dependency so the logic is unit-tested directly; updater_app.go is |
| 37 | // the thin bridge binding that wires these into App methods and progress events. |
| 38 | |
| 39 | // Manifest endpoints — R2 CDN first (fast, especially in CN), then the crash |
| 40 | // worker release gateway, then GitHub as the stable channel's last resort. The |
| 41 | // selected update channel picks the rolling pointer; it is user-configurable and |
| 42 | // independent from the build channel embedded for diagnostics/backcompat. The |
| 43 | // gateway still avoids GitHub's repository-wide /releases/latest shortcut so the |
| 44 | // app is not coupled to GitHub's homepage badge semantics. |
| 45 | const ( |
| 46 | r2Base = "https://dl.reasonix.io" |
| 47 | releaseGatewayBase = "https://crash.reasonix.io/v1/desktop/releases" |
| 48 | downloadPageURL = "https://reasonix.io/#start" |
| 49 | manifestDownloadPageURL = "https://reasonix.io/?download=desktop#start" |
| 50 | httpTimeout = 15 * time.Second |
| 51 | manifestEndpointTimeout = 5 * time.Second |
| 52 | maxDesktopReleaseAssetSize = int64(1 << 30) |
| 53 | maxDesktopManifestSize = int64(1 << 20) |
| 54 | maxDesktopSignatureSize = int64(64 << 10) |
| 55 | ) |
| 56 | |
| 57 | var fetchAttemptTimeout = 5 * time.Second |
| 58 | |
| 59 | var ( |
| 60 | stableDesktopVersionRE = regexp.MustCompile(`^v(0|[1-9][0-9]*)\.(0|[1-9][0-9]*)\.(0|[1-9][0-9]*)$`) |
| 61 | sha256RE = regexp.MustCompile(`^[0-9a-f]{64}$`) |
| 62 | ) |
| 63 | |
| 64 | // githubManifestFallback is the stable channel's last-resort manifest source. |
| 65 | // dl.reasonix.io and crash.reasonix.io share one Cloudflare zone, so bot |
| 66 | // protection that 403s a user's egress IP takes out both first-party endpoints |
| 67 | // at once (#6005); GitHub is separate infrastructure. The repo-wide latest |
| 68 | // shortcut resolves to whichever release line holds that badge, so a manifest |
| 69 | // from another line must be rejected by validation, not assumed absent. |
| 70 | const githubManifestFallback = "https://github.com/esengine/DeepSeek-Reasonix/releases/latest/download/latest.json" |
| 71 | |
| 72 | func normalizeUpdateChannel(ch string) string { |
| 73 | return config.NormalizeDesktopUpdateChannel(ch) |
| 74 | } |
| 75 | |
| 76 | func configuredUpdateChannel() string { |
| 77 | cfg, err := config.Load() |
| 78 | if err != nil { |
| 79 | return "stable" |
| 80 | } |
| 81 | return cfg.DesktopUpdateChannel() |
| 82 | } |
| 83 | |
| 84 | func targetUpdateChannel(selected string) string { |
| 85 | _ = selected |
| 86 | return configuredUpdateChannel() |
| 87 | } |
| 88 | |
| 89 | func runningUpdateChannel() string { |
| 90 | return normalizeUpdateChannel(channel) |
| 91 | } |
| 92 | |
| 93 | // manifestEndpoints returns the manifest URLs for the selected update channel, |
| 94 | // in the order fetchManifest tries them. |
| 95 | func manifestEndpoints(selected string) []string { |
| 96 | _ = selected |
| 97 | return []string{ |
| 98 | r2Base + "/latest/latest.json", |
| 99 | releaseGatewayBase + "/stable/latest.json", |
| 100 | githubManifestFallback, |
| 101 | } |
| 102 | } |
| 103 | |
| 104 | // updaterUserAgent identifies updater traffic. Go's default Go-http-client UA |
| 105 | // is exactly what edge bot protection scores worst (#6005); a descriptive UA |
| 106 | // lets the release edge allowlist updater requests and makes them attributable |
| 107 | // in server logs. |
| 108 | func updaterUserAgent(selected string) string { |
| 109 | return fmt.Sprintf("Reasonix-Updater/%s (%s/%s; build=%s; update=%s)", version, runtime.GOOS, runtime.GOARCH, channel, normalizeUpdateChannel(selected)) |
| 110 | } |
| 111 | |
| 112 | // downloadPage is the human-facing releases page shown when self-update is |
| 113 | // unavailable (macOS) or the manifest omits its own link. |
| 114 | func downloadPage(selected string) string { |
| 115 | _ = selected |
| 116 | u, _ := url.Parse(downloadPageURL) |
| 117 | query := u.Query() |
| 118 | query.Set("download", "desktop") |
| 119 | query.Del("channel") |
| 120 | u.RawQuery = query.Encode() |
| 121 | return u.String() |
| 122 | } |
| 123 | |
| 124 | func manifestDownloadPage(selected, manifestPage string) string { |
| 125 | manifestPage = strings.TrimSpace(manifestPage) |
| 126 | if manifestPage == "" { |
| 127 | return downloadPage(selected) |
| 128 | } |
| 129 | u, err := url.Parse(manifestPage) |
| 130 | if err != nil || |
| 131 | u.Scheme != "https" || |
| 132 | u.Hostname() == "" || |
| 133 | u.User != nil { |
| 134 | return downloadPage(selected) |
| 135 | } |
| 136 | host := strings.ToLower(u.Hostname()) |
| 137 | if host != "reasonix.io" && !strings.HasSuffix(host, ".reasonix.io") { |
| 138 | return u.String() |
| 139 | } |
| 140 | query := u.Query() |
| 141 | query.Set("download", "desktop") |
| 142 | query.Del("channel") |
| 143 | u.RawQuery = query.Encode() |
| 144 | u.Fragment = "start" |
| 145 | return u.String() |
| 146 | } |
| 147 | |
| 148 | // UpdateInfo is the CheckUpdate result that drives the frontend's update banner. |
| 149 | type UpdateInfo struct { |
| 150 | Available bool `json:"available"` |
| 151 | Current string `json:"current"` |
| 152 | Latest string `json:"latest"` |
| 153 | Notes string `json:"notes"` |
| 154 | Channel string `json:"channel"` |
| 155 | CanSelfUpdate bool `json:"canSelfUpdate"` // win/linux true; macOS true only for signed/notarized builds |
| 156 | ManualOnly bool `json:"manualOnly,omitempty"` |
| 157 | ManualReason string `json:"manualReason,omitempty"` |
| 158 | InstallMode string `json:"installMode"` // portable | deb | manual |
| 159 | RequiresElevation bool `json:"requiresElevation,omitempty"` // deb/Polkit path |
| 160 | Downloaded bool `json:"downloaded"` |
| 161 | DownloadURL string `json:"downloadUrl"` // human-facing releases page (macOS path / fallback link) |
| 162 | AssetSize int64 `json:"assetSize"` // running platform's artifact size, for the progress bar |
| 163 | Err string `json:"err,omitempty"` // set when the check itself failed (both endpoints down) |
| 164 | } |
| 165 | |
| 166 | // UpdateDownloadResult is returned after an artifact has been downloaded, |
| 167 | // verified, and stored in the local updater cache. |
| 168 | type UpdateDownloadResult struct { |
| 169 | RequestID string `json:"requestId"` |
| 170 | Version string `json:"version"` |
| 171 | Channel string `json:"channel"` |
| 172 | Path string `json:"path"` |
| 173 | Size int64 `json:"size"` |
| 174 | SHA256 string `json:"sha256"` |
| 175 | } |
| 176 | |
| 177 | // updateProgress is the payload of the "updater:progress" bridge event emitted |
| 178 | // throughout DownloadUpdate / InstallUpdate. |
| 179 | type updateProgress struct { |
| 180 | RequestID string `json:"requestId"` |
| 181 | Version string `json:"version"` |
| 182 | Channel string `json:"channel"` |
| 183 | Phase string `json:"phase"` // downloading | verifying | downloaded | authorizing | recovering | installing | done | error |
| 184 | Received int64 `json:"received"` |
| 185 | Total int64 `json:"total"` |
| 186 | Err string `json:"err,omitempty"` |
| 187 | } |
| 188 | |
| 189 | func httpClient() (*http.Client, error) { return newHTTPClient(false) } |
| 190 | |
| 191 | // httpClientIPv4 pins the dialer to IPv4 — the download fallback when the default |
| 192 | // (often IPv6-first) route to Cloudflare keeps resetting mid-transfer. |
| 193 | func httpClientIPv4() (*http.Client, error) { return newHTTPClient(true) } |
| 194 | |
| 195 | func newHTTPClient(forceIPv4 bool) (*http.Client, error) { |
| 196 | cfg, err := config.Load() |
| 197 | if err != nil { |
| 198 | return nil, err |
| 199 | } |
| 200 | c, err := netclient.NewHTTPClient(cfg.NetworkProxySpec(), netclient.TransportOptions{ForceIPv4: forceIPv4}) |
| 201 | if err != nil { |
| 202 | return nil, err |
| 203 | } |
| 204 | c.CheckRedirect = validateUpdateRedirect |
| 205 | return c, nil |
| 206 | } |
| 207 | |
| 208 | func validateUpdateRedirect(req *http.Request, via []*http.Request) error { |
| 209 | if len(via) >= 10 { |
| 210 | return errors.New("update: stopped after 10 redirects") |
| 211 | } |
| 212 | if req == nil || req.URL == nil { |
| 213 | return errors.New("update: redirect has no target URL") |
| 214 | } |
| 215 | if !strings.EqualFold(req.URL.Scheme, "https") { |
| 216 | return fmt.Errorf("update: refusing redirect to non-HTTPS URL %q", req.URL.String()) |
| 217 | } |
| 218 | if req.URL.Hostname() == "" { |
| 219 | return fmt.Errorf("update: refusing redirect without a hostname %q", req.URL.String()) |
| 220 | } |
| 221 | if req.URL.User != nil { |
| 222 | return fmt.Errorf("update: refusing redirect with userinfo %q", req.URL.String()) |
| 223 | } |
| 224 | if req.URL.Port() != "" || !isTrustedUpdateRedirectHost(req.URL.Hostname()) { |
| 225 | return fmt.Errorf("update: refusing redirect to untrusted host %q", req.URL.Host) |
| 226 | } |
| 227 | return nil |
| 228 | } |
| 229 | |
| 230 | func isTrustedUpdateRedirectHost(host string) bool { |
| 231 | host = strings.ToLower(strings.TrimSuffix(strings.TrimSpace(host), ".")) |
| 232 | return host == "reasonix.io" || |
| 233 | strings.HasSuffix(host, ".reasonix.io") || |
| 234 | host == "github.com" || |
| 235 | strings.HasSuffix(host, ".githubusercontent.com") |
| 236 | } |
| 237 | |
| 238 | // canSelfUpdate reports whether in-place update is possible. Windows and Linux |
| 239 | // can replace the verified artifact directly; macOS requires an explicitly |
| 240 | // signed/notarized build flag so local or ad-hoc builds stay manual. |
| 241 | func canSelfUpdate() bool { |
| 242 | return runtime.GOOS != "darwin" || macSelfUpdateAllowed() |
| 243 | } |
| 244 | |
| 245 | func manualUpdateReason() string { |
| 246 | if runtime.GOOS == "darwin" && !macSelfUpdateAllowed() { |
| 247 | return "macOS automatic updates require a Developer ID signed and notarized build" |
| 248 | } |
| 249 | return "" |
| 250 | } |
| 251 | |
| 252 | // normalizeVersion canonicalizes a version to semver "vX.Y.Z". It reports ok=false |
| 253 | // for the un-injected "dev" build (and anything not valid semver), so a dev build |
| 254 | // never prompts to update. |
| 255 | func normalizeVersion(v string) (string, bool) { |
| 256 | v = strings.TrimSpace(v) |
| 257 | if v == "" || v == "dev" { |
| 258 | return "", false |
| 259 | } |
| 260 | if !strings.HasPrefix(v, "v") { |
| 261 | v = "v" + v |
| 262 | } |
| 263 | if !semver.IsValid(v) { |
| 264 | return "", false |
| 265 | } |
| 266 | return semver.Canonical(v), true |
| 267 | } |
| 268 | |
| 269 | // validateManifestChannel rejects every prerelease. The selected value remains |
| 270 | // in the signature for compatibility with existing callers. |
| 271 | func validateManifestChannel(selected string, m *update.Manifest) error { |
| 272 | _ = selected |
| 273 | if !stableDesktopVersionRE.MatchString(m.Version) { |
| 274 | return fmt.Errorf("official manifest has invalid release version %q", m.Version) |
| 275 | } |
| 276 | return nil |
| 277 | } |
| 278 | |
| 279 | func desktopReleaseTag(_ string, version string) string { |
| 280 | return "desktop-" + version |
| 281 | } |
| 282 | |
| 283 | func desktopAssetBases(selected, version string, allowLegacyPreview bool) []string { |
| 284 | _ = selected |
| 285 | _ = allowLegacyPreview |
| 286 | tag := desktopReleaseTag(selected, version) |
| 287 | return []string{ |
| 288 | fmt.Sprintf("%s/%s/", r2Base, tag), |
| 289 | fmt.Sprintf("https://github.com/esengine/DeepSeek-Reasonix/releases/download/%s/", tag), |
| 290 | fmt.Sprintf("https://github.com/esengine/DeepSeek-Reasonix/releases/download/%s/", version), |
| 291 | } |
| 292 | } |
| 293 | |
| 294 | func validateManifestAsset(selected, version, filename string, asset update.Asset, allowLegacyPreview bool) (string, error) { |
| 295 | base := "" |
| 296 | for _, candidate := range desktopAssetBases(selected, version, allowLegacyPreview) { |
| 297 | if asset.URL == candidate+filename { |
| 298 | base = candidate |
| 299 | break |
| 300 | } |
| 301 | } |
| 302 | if base == "" { |
| 303 | return "", fmt.Errorf("asset URL %q is not the official %s path for %s", asset.URL, normalizeUpdateChannel(selected), filename) |
| 304 | } |
| 305 | if asset.Sig != asset.URL+".minisig" { |
| 306 | return "", fmt.Errorf("asset signature URL %q does not match %q", asset.Sig, asset.URL+".minisig") |
| 307 | } |
| 308 | if asset.Size <= 0 || asset.Size > maxDesktopReleaseAssetSize { |
| 309 | return "", fmt.Errorf("asset %s has invalid size %d", filename, asset.Size) |
| 310 | } |
| 311 | if !sha256RE.MatchString(asset.SHA256) { |
| 312 | return "", fmt.Errorf("asset %s has invalid SHA-256 %q", filename, asset.SHA256) |
| 313 | } |
| 314 | if err := validateAssetInstallLayout(asset.InstallLayout); err != nil { |
| 315 | return "", err |
| 316 | } |
| 317 | return base, nil |
| 318 | } |
| 319 | |
| 320 | // validateAssetInstallLayout accepts the pre-v1.20 empty layout (flat install) |
| 321 | // and the v1.20+ versioned-v1 layout. Unknown values must fail closed so a new |
| 322 | // client never partially installs an unrecognized package shape. |
| 323 | func validateAssetInstallLayout(layout string) error { |
| 324 | switch strings.TrimSpace(layout) { |
| 325 | case "", installlayout.InstallLayoutVersionedV1, update.ElectronInstallLayout: |
| 326 | return nil |
| 327 | default: |
| 328 | return fmt.Errorf("unsupported install_layout %q (keeping current version)", layout) |
| 329 | } |
| 330 | } |
| 331 | |
| 332 | func validateDesktopManifest(selected string, m *update.Manifest) error { |
| 333 | selected = normalizeUpdateChannel(selected) |
| 334 | if err := validateManifestChannel(selected, m); err != nil { |
| 335 | return err |
| 336 | } |
| 337 | if m.DownloadPage != manifestDownloadPageURL { |
| 338 | return fmt.Errorf("%s manifest has invalid download page %q", selected, m.DownloadPage) |
| 339 | } |
| 340 | // Historical manifests either omitted website downloads or carried only the |
| 341 | // Universal DMG and Windows portable ZIP. New manifests add both native-arch |
| 342 | // DMGs. Seeing either new key switches validation to the complete new set so a |
| 343 | // partially published architecture matrix cannot reach the website. |
| 344 | legacyManifest := m.Downloads == nil |
| 345 | requiredAssets := append([]requiredDesktopAsset(nil), requiredDesktopUpdaterAssets...) |
| 346 | if !legacyManifest { |
| 347 | downloadAssets := legacyDesktopDownloadAssets |
| 348 | if _, arm := m.Downloads["Reasonix-darwin-arm64.dmg"]; arm { |
| 349 | downloadAssets = requiredDesktopDownloadAssets |
| 350 | } else if _, intel := m.Downloads["Reasonix-darwin-amd64.dmg"]; intel { |
| 351 | downloadAssets = requiredDesktopDownloadAssets |
| 352 | } |
| 353 | requiredAssets = append(requiredAssets, downloadAssets...) |
| 354 | } |
| 355 | base := "" |
| 356 | for _, required := range requiredAssets { |
| 357 | var assets map[string]update.Asset |
| 358 | switch required.group { |
| 359 | case "platforms": |
| 360 | assets = m.Platforms |
| 361 | case "native_packages": |
| 362 | assets = m.NativePackages |
| 363 | case "downloads": |
| 364 | assets = m.Downloads |
| 365 | default: |
| 366 | return fmt.Errorf("unsupported manifest asset group %q", required.group) |
| 367 | } |
| 368 | asset, ok := assets[required.key] |
| 369 | if !ok { |
| 370 | return fmt.Errorf("%s manifest has no %s asset for %s", selected, required.group, required.key) |
| 371 | } |
| 372 | assetBase, err := validateManifestAsset(selected, m.Version, required.filename, asset, legacyManifest) |
| 373 | if err != nil { |
| 374 | return fmt.Errorf("%s %s asset: %w", required.group, required.key, err) |
| 375 | } |
| 376 | if base != "" && assetBase != base { |
| 377 | return fmt.Errorf("%s manifest mixes asset bases %q and %q", selected, base, assetBase) |
| 378 | } |
| 379 | base = assetBase |
| 380 | } |
| 381 | return nil |
| 382 | } |
| 383 | |
| 384 | // fetchManifest pulls latest.json from each endpoint in order until one both |
| 385 | // responds, decodes, and matches an official release. Every endpoint's |
| 386 | // failure is kept — a user staring at a gateway 403 (#6005) needs to see that |
| 387 | // the R2 pointer failed too, not just whichever endpoint happened to die last. |
| 388 | func fetchManifest(ctx context.Context, c, fallback *http.Client, selected string) (*update.Manifest, error) { |
| 389 | var errs []error |
| 390 | selected = normalizeUpdateChannel(selected) |
| 391 | for _, url := range manifestEndpoints(selected) { |
| 392 | endpointCtx, cancel := context.WithTimeout(ctx, manifestEndpointTimeout) |
| 393 | b, err := fetchManifestBytes(endpointCtx, c, fallback, selected, url) |
| 394 | cancel() |
| 395 | if err != nil { |
| 396 | errs = append(errs, err) |
| 397 | continue |
| 398 | } |
| 399 | var m update.Manifest |
| 400 | if err := json.Unmarshal(b, &m); err != nil { |
| 401 | errs = append(errs, fmt.Errorf("%s: %w", url, err)) |
| 402 | continue |
| 403 | } |
| 404 | if err := validateDesktopManifest(selected, &m); err != nil { |
| 405 | errs = append(errs, fmt.Errorf("%s: %w", url, err)) |
| 406 | continue |
| 407 | } |
| 408 | return &m, nil |
| 409 | } |
| 410 | return nil, fmt.Errorf("update: fetch manifest: %w", errors.Join(errs...)) |
| 411 | } |
| 412 | |
| 413 | // fetchManifestBytes gives the default and IPv4 transports separate halves of |
| 414 | // the endpoint budget. A stalled IPv6 dial must not consume the whole timeout |
| 415 | // before the IPv4 fallback gets a chance to run (#6713). |
| 416 | func fetchManifestBytes(ctx context.Context, c, fallback *http.Client, selected, url string) ([]byte, error) { |
| 417 | attemptTimeout := manifestEndpointTimeout / 2 |
| 418 | attemptCtx, cancel := context.WithTimeout(ctx, attemptTimeout) |
| 419 | data, err := fetchBytesOnce(attemptCtx, c, selected, url, maxDesktopManifestSize) |
| 420 | cancel() |
| 421 | if err == nil || !isTransientFetchError(err) || fallback == nil { |
| 422 | return data, err |
| 423 | } |
| 424 | attemptCtx, cancel = context.WithTimeout(ctx, attemptTimeout) |
| 425 | fallbackData, fallbackErr := fetchBytesOnce(attemptCtx, fallback, selected, url, maxDesktopManifestSize) |
| 426 | cancel() |
| 427 | if fallbackErr == nil { |
| 428 | return fallbackData, nil |
| 429 | } |
| 430 | return nil, errors.Join(err, fallbackErr) |
| 431 | } |
| 432 | |
| 433 | // evaluateForChannel compares the running version against the selected channel's |
| 434 | // manifest and builds the frontend-facing result. I/O is limited to install-profile |
| 435 | // detection and cache probes so tests can inject a fixed profile below. |
| 436 | func evaluateForChannel(current, selected string, m *update.Manifest) UpdateInfo { |
| 437 | return evaluateWithProfileForChannel(current, selected, m, profileForManifest(detectInstallProfile(), m)) |
| 438 | } |
| 439 | |
| 440 | func evaluateWithProfile(current string, m *update.Manifest, profile installProfile) UpdateInfo { |
| 441 | return evaluateWithProfileForChannel(current, runningUpdateChannel(), m, profile) |
| 442 | } |
| 443 | |
| 444 | // evaluateWithProfileForChannel is the pure comparison core once the install |
| 445 | // profile and selected update channel are known. |
| 446 | func evaluateWithProfileForChannel(current, selected string, m *update.Manifest, profile installProfile) UpdateInfo { |
| 447 | selected = normalizeUpdateChannel(selected) |
| 448 | page := manifestDownloadPage(selected, m.DownloadPage) |
| 449 | info := UpdateInfo{ |
| 450 | Current: current, |
| 451 | Latest: m.Version, |
| 452 | Notes: m.Notes, |
| 453 | Channel: selected, |
| 454 | CanSelfUpdate: profile.CanSelfUpdate, |
| 455 | ManualOnly: !profile.CanSelfUpdate, |
| 456 | ManualReason: profile.ManualReason, |
| 457 | InstallMode: profile.Mode, |
| 458 | RequiresElevation: profile.RequiresElev, |
| 459 | DownloadURL: page, |
| 460 | } |
| 461 | // Preserve the pre-existing macOS gate when profile detection would otherwise |
| 462 | // claim portable self-update on an unsigned build. |
| 463 | if runtime.GOOS == "darwin" && !canSelfUpdate() { |
| 464 | info.CanSelfUpdate = false |
| 465 | info.ManualOnly = true |
| 466 | info.RequiresElevation = false |
| 467 | info.InstallMode = installModeManual |
| 468 | if info.ManualReason == "" { |
| 469 | info.ManualReason = manualUpdateReason() |
| 470 | } |
| 471 | } |
| 472 | cur, okCur := normalizeVersion(current) |
| 473 | latest, okLatest := normalizeVersion(m.Version) |
| 474 | if !okLatest { |
| 475 | info.Err = "manifest has no valid version" |
| 476 | return info |
| 477 | } |
| 478 | // A dev/invalid running version never auto-prompts. Within a channel, only a |
| 479 | // newer semver is an update. Across channels, a different target latest is an |
| 480 | // explicit channel switch, so allow installing stable over a newer preview. |
| 481 | if okCur { |
| 482 | if selected != runningUpdateChannel() { |
| 483 | info.Available = latest != cur |
| 484 | } else if semver.Compare(latest, cur) > 0 { |
| 485 | info.Available = true |
| 486 | } |
| 487 | } |
| 488 | if a, kind, ok := selectUpdateAsset(m, profile); ok { |
| 489 | info.AssetSize = a.Size |
| 490 | info.Downloaded = cachedUpdateMatchesForChannel(selected, m.Version, a, kind) |
| 491 | } else if a, ok := m.Asset(); ok { |
| 492 | // Manual installs (or a missing native package) still surface the portable |
| 493 | // artifact size so the UI can show how large the download is on the page. |
| 494 | info.AssetSize = a.Size |
| 495 | } |
| 496 | return info |
| 497 | } |
| 498 | |
| 499 | type cachedUpdate struct { |
| 500 | Version string `json:"version"` |
| 501 | Channel string `json:"channel"` |
| 502 | Platform string `json:"platform"` |
| 503 | Path string `json:"path"` |
| 504 | Size int64 `json:"size"` |
| 505 | SHA256 string `json:"sha256"` |
| 506 | DownloadedAt string `json:"downloadedAt"` |
| 507 | ArtifactKind string `json:"artifactKind,omitempty"` // tarball | deb |
| 508 | SignaturePath string `json:"signaturePath,omitempty"` // required for deb |
| 509 | } |
| 510 | |
| 511 | var updateCacheBaseDir = defaultUpdateCacheBaseDir |
| 512 | |
| 513 | func defaultUpdateCacheBaseDir() (string, error) { |
| 514 | if cd := config.CacheDir(); cd != "" { |
| 515 | return filepath.Join(cd, "updates"), nil |
| 516 | } |
| 517 | base, err := os.UserCacheDir() |
| 518 | if err != nil { |
| 519 | base = os.TempDir() |
| 520 | } |
| 521 | return filepath.Join(base, "Reasonix", "updates"), nil |
| 522 | } |
| 523 | |
| 524 | func updateCacheDir() (string, error) { |
| 525 | dir, err := updateCacheBaseDir() |
| 526 | if err != nil { |
| 527 | return "", err |
| 528 | } |
| 529 | if err := os.MkdirAll(dir, 0o700); err != nil { |
| 530 | return "", err |
| 531 | } |
| 532 | return dir, nil |
| 533 | } |
| 534 | |
| 535 | func updateMetadataPath() (string, error) { |
| 536 | dir, err := updateCacheDir() |
| 537 | if err != nil { |
| 538 | return "", err |
| 539 | } |
| 540 | return filepath.Join(dir, "downloaded.json"), nil |
| 541 | } |
| 542 | |
| 543 | func assetFileName(asset update.Asset, version string) string { |
| 544 | if u, err := url.Parse(asset.URL); err == nil { |
| 545 | if base := filepath.Base(u.Path); base != "." && base != "/" { |
| 546 | return base |
| 547 | } |
| 548 | } |
| 549 | clean := strings.NewReplacer("/", "-", "\\", "-", ":", "-", " ", "-").Replace(version) |
| 550 | return "Reasonix-" + clean + "-" + update.CurrentPlatform() + ".update" |
| 551 | } |
| 552 | |
| 553 | func writeAtomic(path string, data []byte, mode os.FileMode) error { |
| 554 | tmp, err := os.CreateTemp(filepath.Dir(path), "."+filepath.Base(path)+".tmp-*") |
| 555 | if err != nil { |
| 556 | return err |
| 557 | } |
| 558 | name := tmp.Name() |
| 559 | if _, err := tmp.Write(data); err != nil { |
| 560 | tmp.Close() |
| 561 | _ = os.Remove(name) |
| 562 | return err |
| 563 | } |
| 564 | if err := tmp.Sync(); err != nil { |
| 565 | tmp.Close() |
| 566 | _ = os.Remove(name) |
| 567 | return err |
| 568 | } |
| 569 | if err := tmp.Chmod(mode); err != nil { |
| 570 | tmp.Close() |
| 571 | _ = os.Remove(name) |
| 572 | return err |
| 573 | } |
| 574 | if err := tmp.Close(); err != nil { |
| 575 | _ = os.Remove(name) |
| 576 | return err |
| 577 | } |
| 578 | if err := os.Rename(name, path); err != nil { |
| 579 | _ = os.Remove(name) |
| 580 | return err |
| 581 | } |
| 582 | return nil |
| 583 | } |
| 584 | |
| 585 | func saveCachedUpdate(version string, asset update.Asset, data []byte, kind string, signature []byte) (*cachedUpdate, error) { |
| 586 | return saveCachedUpdateForChannel(runningUpdateChannel(), version, asset, data, kind, signature) |
| 587 | } |
| 588 | |
| 589 | func saveCachedUpdateForChannel(selected, version string, asset update.Asset, data []byte, kind string, signature []byte) (*cachedUpdate, error) { |
| 590 | selected = normalizeUpdateChannel(selected) |
| 591 | if err := checkSHA256(data, asset.SHA256); err != nil { |
| 592 | return nil, err |
| 593 | } |
| 594 | kind = artifactKindFromMeta(kind) |
| 595 | dir, err := updateCacheDir() |
| 596 | if err != nil { |
| 597 | return nil, err |
| 598 | } |
| 599 | path := filepath.Join(dir, assetFileName(asset, version)) |
| 600 | if err := writeAtomic(path, data, 0o600); err != nil { |
| 601 | return nil, err |
| 602 | } |
| 603 | meta := &cachedUpdate{ |
| 604 | Version: version, |
| 605 | Channel: selected, |
| 606 | Platform: update.CurrentPlatform(), |
| 607 | Path: path, |
| 608 | Size: int64(len(data)), |
| 609 | SHA256: asset.SHA256, |
| 610 | DownloadedAt: time.Now().UTC().Format(time.RFC3339), |
| 611 | ArtifactKind: kind, |
| 612 | } |
| 613 | if kind == artifactKindDeb { |
| 614 | if len(signature) == 0 { |
| 615 | return nil, fmt.Errorf("update: deb cache requires a signature") |
| 616 | } |
| 617 | sigPath := path + ".minisig" |
| 618 | if err := writeAtomic(sigPath, signature, 0o600); err != nil { |
| 619 | return nil, err |
| 620 | } |
| 621 | meta.SignaturePath = sigPath |
| 622 | } |
| 623 | raw, err := json.MarshalIndent(meta, "", " ") |
| 624 | if err != nil { |
| 625 | return nil, err |
| 626 | } |
| 627 | metadataPath, err := updateMetadataPath() |
| 628 | if err != nil { |
| 629 | return nil, err |
| 630 | } |
| 631 | if err := writeAtomic(metadataPath, append(raw, '\n'), 0o600); err != nil { |
| 632 | return nil, err |
| 633 | } |
| 634 | return meta, nil |
| 635 | } |
| 636 | |
| 637 | func loadCachedUpdate() (*cachedUpdate, error) { |
| 638 | path, err := updateMetadataPath() |
| 639 | if err != nil { |
| 640 | return nil, err |
| 641 | } |
| 642 | raw, err := readFileUTF8(path) |
| 643 | if err != nil { |
| 644 | return nil, err |
| 645 | } |
| 646 | var meta cachedUpdate |
| 647 | if err := json.Unmarshal(raw, &meta); err != nil { |
| 648 | return nil, err |
| 649 | } |
| 650 | if meta.Version == "" || meta.Channel == "" || meta.Platform == "" || meta.Path == "" || meta.SHA256 == "" { |
| 651 | return nil, fmt.Errorf("update: cached metadata is incomplete") |
| 652 | } |
| 653 | return &meta, nil |
| 654 | } |
| 655 | |
| 656 | func cachedUpdateMatches(version string, asset update.Asset, kind string) bool { |
| 657 | return cachedUpdateMatchesForChannel(runningUpdateChannel(), version, asset, kind) |
| 658 | } |
| 659 | |
| 660 | func cachedUpdateMatchesForChannel(selected, version string, asset update.Asset, kind string) bool { |
| 661 | selected = normalizeUpdateChannel(selected) |
| 662 | meta, err := loadCachedUpdate() |
| 663 | if err != nil { |
| 664 | return false |
| 665 | } |
| 666 | kind = artifactKindFromMeta(kind) |
| 667 | metaKind := artifactKindFromMeta(meta.ArtifactKind) |
| 668 | // Legacy portable caches omit artifactKind and remain valid for tarball only. |
| 669 | // Deb installs never reuse a cache that lacks a matching signature file. |
| 670 | if kind == artifactKindDeb { |
| 671 | if metaKind != artifactKindDeb || meta.SignaturePath == "" { |
| 672 | return false |
| 673 | } |
| 674 | if _, err := os.Stat(meta.SignaturePath); err != nil { |
| 675 | return false |
| 676 | } |
| 677 | } else if metaKind != artifactKindTarball { |
| 678 | return false |
| 679 | } |
| 680 | return meta.Version == version && |
| 681 | meta.Channel == selected && |
| 682 | meta.Platform == update.CurrentPlatform() && |
| 683 | strings.EqualFold(meta.SHA256, asset.SHA256) && |
| 684 | meta.Size == asset.Size && |
| 685 | fileSHA256Matches(meta.Path, meta.SHA256) |
| 686 | } |
| 687 | |
| 688 | func fileSHA256Matches(path, want string) bool { |
| 689 | f, err := os.Open(path) |
| 690 | if err != nil { |
| 691 | return false |
| 692 | } |
| 693 | defer f.Close() |
| 694 | h := sha256.New() |
| 695 | if _, err := io.Copy(h, f); err != nil { |
| 696 | return false |
| 697 | } |
| 698 | return strings.EqualFold(hex.EncodeToString(h.Sum(nil)), want) |
| 699 | } |
| 700 | |
| 701 | func readVerifiedCachedUpdate() (*cachedUpdate, []byte, error) { |
| 702 | return readVerifiedCachedUpdateForChannel(runningUpdateChannel()) |
| 703 | } |
| 704 | |
| 705 | func readVerifiedCachedUpdateForChannel(selected string) (*cachedUpdate, []byte, error) { |
| 706 | selected = normalizeUpdateChannel(selected) |
| 707 | meta, err := loadCachedUpdate() |
| 708 | if err != nil { |
| 709 | return nil, nil, err |
| 710 | } |
| 711 | if meta.Channel != selected { |
| 712 | return nil, nil, fmt.Errorf("update: cached update is for %s channel, selected channel is %s", meta.Channel, selected) |
| 713 | } |
| 714 | if meta.Platform != update.CurrentPlatform() { |
| 715 | return nil, nil, fmt.Errorf("update: cached update is for %s, current platform is %s", meta.Platform, update.CurrentPlatform()) |
| 716 | } |
| 717 | data, err := os.ReadFile(meta.Path) |
| 718 | if err != nil { |
| 719 | return nil, nil, err |
| 720 | } |
| 721 | if err := checkSHA256(data, meta.SHA256); err != nil { |
| 722 | return nil, nil, err |
| 723 | } |
| 724 | meta.ArtifactKind = artifactKindFromMeta(meta.ArtifactKind) |
| 725 | if meta.ArtifactKind == artifactKindDeb { |
| 726 | if meta.SignaturePath == "" { |
| 727 | return nil, nil, fmt.Errorf("update: cached deb is missing its signature") |
| 728 | } |
| 729 | if _, err := os.Stat(meta.SignaturePath); err != nil { |
| 730 | return nil, nil, fmt.Errorf("update: cached deb signature is missing") |
| 731 | } |
| 732 | } |
| 733 | return meta, data, nil |
| 734 | } |
| 735 | |
| 736 | // downloadAttempts caps how many times a transient transport failure (connection |
| 737 | // reset, read timeout, gateway 5xx) is retried before the update gives up. CN IPv6 |
| 738 | // routes to Cloudflare reset mid-transfer often enough that a retry or two usually |
| 739 | // completes the download instead of surfacing a "forcibly closed" error. |
| 740 | const downloadAttempts = 3 |
| 741 | |
| 742 | // retryBackoff is the pause before the Nth retry; a package var so tests shrink it. |
| 743 | var retryBackoff = func(attempt int) time.Duration { return time.Duration(attempt) * 500 * time.Millisecond } |
| 744 | |
| 745 | // retryTransient runs attempt 1..downloadAttempts of fetch, pausing between tries, |
| 746 | // until one succeeds. fetch receives the 1-based attempt number so a caller can |
| 747 | // switch transports on a retry. It stops early when ctx is cancelled (window closed |
| 748 | // / user cancelled). Only the transport is retried; the signature and sha256 checks |
| 749 | // run downstream in downloadVerify and are not retried. |
| 750 | func retryTransient(ctx context.Context, fetch func(attempt int) error) error { |
| 751 | var err error |
| 752 | for attempt := 1; attempt <= downloadAttempts; attempt++ { |
| 753 | if err = fetch(attempt); err == nil { |
| 754 | return nil |
| 755 | } |
| 756 | if !isTransientFetchError(err) { |
| 757 | break |
| 758 | } |
| 759 | if ctx.Err() != nil || attempt == downloadAttempts { |
| 760 | break |
| 761 | } |
| 762 | select { |
| 763 | case <-ctx.Done(): |
| 764 | return ctx.Err() |
| 765 | case <-time.After(retryBackoff(attempt)): |
| 766 | } |
| 767 | } |
| 768 | return err |
| 769 | } |
| 770 | |
| 771 | type httpStatusError struct { |
| 772 | url string |
| 773 | status string |
| 774 | code int |
| 775 | } |
| 776 | |
| 777 | func (e *httpStatusError) Error() string { return fmt.Sprintf("GET %s: %s", e.url, e.status) } |
| 778 | |
| 779 | func isTransientFetchError(err error) bool { |
| 780 | if errors.Is(err, errUpdateResponseTooLarge) { |
| 781 | return false |
| 782 | } |
| 783 | var statusErr *httpStatusError |
| 784 | if !errors.As(err, &statusErr) { |
| 785 | return true |
| 786 | } |
| 787 | return statusErr.code == http.StatusRequestTimeout || statusErr.code == http.StatusTooManyRequests || statusErr.code >= 500 |
| 788 | } |
| 789 | |
| 790 | // fetchBytes GETs a URL fully into memory, retrying transient transport failures. |
| 791 | func fetchBytes(ctx context.Context, c *http.Client, url string) ([]byte, error) { |
| 792 | return fetchBytesFallbackForChannel(ctx, c, nil, runningUpdateChannel(), url) |
| 793 | } |
| 794 | |
| 795 | // fetchBytesFallback retries transport failures with the IPv4-pinned client. |
| 796 | // This covers small manifest/signature requests as well as the artifact body; |
| 797 | // previously only the large artifact download escaped a broken IPv6 route. |
| 798 | func fetchBytesFallback(ctx context.Context, c, fallback *http.Client, url string) ([]byte, error) { |
| 799 | return fetchBytesFallbackForChannel(ctx, c, fallback, runningUpdateChannel(), url) |
| 800 | } |
| 801 | |
| 802 | func fetchBytesFallbackForChannel(ctx context.Context, c, fallback *http.Client, selected, url string) ([]byte, error) { |
| 803 | return fetchBytesFallbackForChannelSized(ctx, c, fallback, selected, url, maxDesktopManifestSize) |
| 804 | } |
| 805 | |
| 806 | func fetchBytesFallbackForChannelSized( |
| 807 | ctx context.Context, |
| 808 | c, fallback *http.Client, |
| 809 | selected, url string, |
| 810 | maxBytes int64, |
| 811 | ) ([]byte, error) { |
| 812 | selected = normalizeUpdateChannel(selected) |
| 813 | var data []byte |
| 814 | err := retryTransient(ctx, func(attempt int) error { |
| 815 | client := c |
| 816 | if attempt > 1 && fallback != nil { |
| 817 | client = fallback |
| 818 | } |
| 819 | var e error |
| 820 | attemptCtx, cancel := context.WithTimeout(ctx, fetchAttemptTimeout) |
| 821 | data, e = fetchBytesOnce(attemptCtx, client, selected, url, maxBytes) |
| 822 | cancel() |
| 823 | return e |
| 824 | }) |
| 825 | return data, err |
| 826 | } |
| 827 | |
| 828 | var errUpdateResponseTooLarge = errors.New("update: response exceeds allowed size") |
| 829 | |
| 830 | func fetchBytesOnce(ctx context.Context, c *http.Client, selected, url string, maxBytes int64) ([]byte, error) { |
| 831 | if maxBytes <= 0 { |
| 832 | return nil, fmt.Errorf("update: invalid response size limit %d", maxBytes) |
| 833 | } |
| 834 | req, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil) |
| 835 | if err != nil { |
| 836 | return nil, err |
| 837 | } |
| 838 | req.Header.Set("User-Agent", updaterUserAgent(selected)) |
| 839 | resp, err := c.Do(req) |
| 840 | if err != nil { |
| 841 | return nil, err |
| 842 | } |
| 843 | defer resp.Body.Close() |
| 844 | if resp.StatusCode != http.StatusOK { |
| 845 | return nil, &httpStatusError{url: url, status: resp.Status, code: resp.StatusCode} |
| 846 | } |
| 847 | if resp.ContentLength > maxBytes { |
| 848 | return nil, fmt.Errorf("%w: GET %s declared %d bytes, maximum is %d", errUpdateResponseTooLarge, url, resp.ContentLength, maxBytes) |
| 849 | } |
| 850 | data, err := io.ReadAll(io.LimitReader(resp.Body, maxBytes+1)) |
| 851 | if err != nil { |
| 852 | return nil, err |
| 853 | } |
| 854 | if int64(len(data)) > maxBytes { |
| 855 | return nil, fmt.Errorf("%w: GET %s exceeded %d bytes", errUpdateResponseTooLarge, url, maxBytes) |
| 856 | } |
| 857 | return data, nil |
| 858 | } |
| 859 | |
| 860 | // download fetches url into memory, invoking onProgress as bytes arrive. A transient |
| 861 | // transport failure is retried; the retry resumes from the bytes already received |
| 862 | // via a Range request instead of restarting, and switches to the IPv4 fallback |
| 863 | // client (when provided) since a reset usually means the IPv6 route is the problem. |
| 864 | // total is the expected size for the progress denominator (refined from the response). |
| 865 | func download(ctx context.Context, c, fallback *http.Client, url string, total int64, onProgress func(received, total int64)) ([]byte, error) { |
| 866 | return downloadForChannel(ctx, c, fallback, runningUpdateChannel(), url, total, onProgress) |
| 867 | } |
| 868 | |
| 869 | func downloadForChannel(ctx context.Context, c, fallback *http.Client, selected, url string, total int64, onProgress func(received, total int64)) ([]byte, error) { |
| 870 | selected = normalizeUpdateChannel(selected) |
| 871 | if total < 0 || total > maxDesktopReleaseAssetSize { |
| 872 | return nil, fmt.Errorf("update: invalid expected asset size %d", total) |
| 873 | } |
| 874 | expectedSize := total |
| 875 | var buf bytes.Buffer |
| 876 | err := retryTransient(ctx, func(attempt int) error { |
| 877 | client := c |
| 878 | if attempt > 1 && fallback != nil { |
| 879 | client = fallback |
| 880 | } |
| 881 | return downloadInto(ctx, client, selected, url, expectedSize, &buf, &total, onProgress) |
| 882 | }) |
| 883 | if err != nil { |
| 884 | return nil, err |
| 885 | } |
| 886 | if expectedSize > 0 && int64(buf.Len()) != expectedSize { |
| 887 | return nil, fmt.Errorf("update: downloaded size mismatch: got %d want %d", buf.Len(), expectedSize) |
| 888 | } |
| 889 | return buf.Bytes(), nil |
| 890 | } |
| 891 | |
| 892 | // downloadInto appends url's body to buf, resuming from buf's current length via a |
| 893 | // Range request so a retry continues the partial download. A 206 carries the |
| 894 | // remaining bytes; a 200 means the server ignored Range, so buf is reset and the |
| 895 | // whole file re-downloaded. total is refined from the response for the progress |
| 896 | // denominator (Content-Length on 200, the size field of Content-Range on 206). |
| 897 | func downloadInto(ctx context.Context, c *http.Client, selected, url string, expectedSize int64, buf *bytes.Buffer, total *int64, onProgress func(received, total int64)) error { |
| 898 | req, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil) |
| 899 | if err != nil { |
| 900 | return err |
| 901 | } |
| 902 | req.Header.Set("User-Agent", updaterUserAgent(selected)) |
| 903 | if buf.Len() > 0 { |
| 904 | req.Header.Set("Range", fmt.Sprintf("bytes=%d-", buf.Len())) |
| 905 | } |
| 906 | resp, err := c.Do(req) |
| 907 | if err != nil { |
| 908 | return err |
| 909 | } |
| 910 | defer resp.Body.Close() |
| 911 | switch resp.StatusCode { |
| 912 | case http.StatusOK: |
| 913 | buf.Reset() |
| 914 | if resp.ContentLength > 0 { |
| 915 | if resp.ContentLength > maxDesktopReleaseAssetSize { |
| 916 | return fmt.Errorf("update: response size %d exceeds maximum %d", resp.ContentLength, maxDesktopReleaseAssetSize) |
| 917 | } |
| 918 | *total = resp.ContentLength |
| 919 | } |
| 920 | case http.StatusPartialContent: |
| 921 | if t := totalFromContentRange(resp.Header.Get("Content-Range")); t > 0 { |
| 922 | if t > maxDesktopReleaseAssetSize { |
| 923 | return fmt.Errorf("update: response size %d exceeds maximum %d", t, maxDesktopReleaseAssetSize) |
| 924 | } |
| 925 | *total = t |
| 926 | } |
| 927 | default: |
| 928 | return fmt.Errorf("GET %s: %s", url, resp.Status) |
| 929 | } |
| 930 | have := int64(buf.Len()) |
| 931 | if expectedSize > 0 && have > expectedSize { |
| 932 | return fmt.Errorf("update: downloaded size exceeds manifest: got at least %d want %d", have, expectedSize) |
| 933 | } |
| 934 | limit := maxDesktopReleaseAssetSize - have + 1 |
| 935 | if expectedSize > 0 { |
| 936 | limit = expectedSize - have + 1 |
| 937 | } |
| 938 | body := io.LimitReader(resp.Body, limit) |
| 939 | pr := &progressReader{r: body, received: have, lastEmit: have, total: *total, onProgress: onProgress} |
| 940 | _, err = io.Copy(buf, pr) |
| 941 | if err == nil && expectedSize > 0 && int64(buf.Len()) > expectedSize { |
| 942 | return fmt.Errorf("update: downloaded size exceeds manifest: got at least %d want %d", buf.Len(), expectedSize) |
| 943 | } |
| 944 | if err == nil && int64(buf.Len()) > maxDesktopReleaseAssetSize { |
| 945 | return fmt.Errorf("update: downloaded size exceeds maximum %d", maxDesktopReleaseAssetSize) |
| 946 | } |
| 947 | return err |
| 948 | } |
| 949 | |
| 950 | // totalFromContentRange parses the total size out of a "bytes 200-999/1000" header, |
| 951 | // returning 0 when it's absent or "*" (unknown). |
| 952 | func totalFromContentRange(v string) int64 { |
| 953 | i := strings.LastIndex(v, "/") |
| 954 | if i < 0 { |
| 955 | return 0 |
| 956 | } |
| 957 | n, err := strconv.ParseInt(strings.TrimSpace(v[i+1:]), 10, 64) |
| 958 | if err != nil { |
| 959 | return 0 |
| 960 | } |
| 961 | return n |
| 962 | } |
| 963 | |
| 964 | // progressReader reports cumulative bytes read, throttled so the event channel |
| 965 | // isn't flooded. |
| 966 | type progressReader struct { |
| 967 | r io.Reader |
| 968 | received int64 |
| 969 | total int64 |
| 970 | lastEmit int64 |
| 971 | onProgress func(received, total int64) |
| 972 | } |
| 973 | |
| 974 | func (p *progressReader) Read(b []byte) (int, error) { |
| 975 | n, err := p.r.Read(b) |
| 976 | p.received += int64(n) |
| 977 | // Emit roughly every 256 KiB, and always on the final read (io.EOF). |
| 978 | if p.onProgress != nil && (p.received-p.lastEmit >= 256<<10 || err == io.EOF) { |
| 979 | p.lastEmit = p.received |
| 980 | p.onProgress(p.received, p.total) |
| 981 | } |
| 982 | return n, err |
| 983 | } |
| 984 | |
| 985 | // checkSHA256 verifies data's digest matches the lowercase-hex want. |
| 986 | func checkSHA256(data []byte, want string) error { |
| 987 | sum := sha256.Sum256(data) |
| 988 | if got := hex.EncodeToString(sum[:]); !strings.EqualFold(got, want) { |
| 989 | return fmt.Errorf("update: sha256 mismatch: got %s want %s", got, want) |
| 990 | } |
| 991 | return nil |
| 992 | } |
| 993 | |
| 994 | // extractBinary pulls a single named regular file out of a .tar.gz blob. |
| 995 | func extractBinary(targz []byte, name string) ([]byte, error) { |
| 996 | gz, err := gzip.NewReader(bytes.NewReader(targz)) |
| 997 | if err != nil { |
| 998 | return nil, err |
| 999 | } |
| 1000 | defer gz.Close() |
| 1001 | tr := tar.NewReader(gz) |
| 1002 | for { |
| 1003 | h, err := tr.Next() |
| 1004 | if err == io.EOF { |
| 1005 | break |
| 1006 | } |
| 1007 | if err != nil { |
| 1008 | return nil, err |
| 1009 | } |
| 1010 | if h.Typeflag == tar.TypeReg && (h.Name == name || strings.HasSuffix(h.Name, "/"+name)) { |
| 1011 | return io.ReadAll(tr) |
| 1012 | } |
| 1013 | } |
| 1014 | return nil, fmt.Errorf("update: %q not found in archive", name) |
| 1015 | } |
| 1016 | |
| 1017 | func extractLinuxReleaseUnit(targz []byte) (map[string][]byte, error) { |
| 1018 | const ( |
| 1019 | desktop = "reasonix-desktop" |
| 1020 | guard = "reasonix-guard" |
| 1021 | cli = "reasonix" |
| 1022 | ) |
| 1023 | want := map[string]struct{}{desktop: {}, guard: {}, cli: {}} |
| 1024 | found := make(map[string][]byte, len(want)) |
| 1025 | gz, err := gzip.NewReader(bytes.NewReader(targz)) |
| 1026 | if err != nil { |
| 1027 | return nil, err |
| 1028 | } |
| 1029 | defer gz.Close() |
| 1030 | tr := tar.NewReader(gz) |
| 1031 | for { |
| 1032 | h, err := tr.Next() |
| 1033 | if errors.Is(err, io.EOF) { |
| 1034 | break |
| 1035 | } |
| 1036 | if err != nil { |
| 1037 | return nil, err |
| 1038 | } |
| 1039 | name := path.Base(strings.TrimSpace(h.Name)) |
| 1040 | if _, ok := want[name]; !ok { |
| 1041 | continue |
| 1042 | } |
| 1043 | if h.Typeflag != tar.TypeReg || h.Size < 0 { |
| 1044 | return nil, fmt.Errorf("update: release member %q is not a regular file", name) |
| 1045 | } |
| 1046 | if _, duplicate := found[name]; duplicate { |
| 1047 | return nil, fmt.Errorf("update: release member %q appears more than once", name) |
| 1048 | } |
| 1049 | body, err := io.ReadAll(tr) |
| 1050 | if err != nil { |
| 1051 | return nil, err |
| 1052 | } |
| 1053 | found[name] = body |
| 1054 | } |
| 1055 | if len(found) != len(want) { |
| 1056 | for name := range want { |
| 1057 | if _, ok := found[name]; !ok { |
| 1058 | return nil, fmt.Errorf("update: release member %q not found in archive", name) |
| 1059 | } |
| 1060 | } |
| 1061 | } |
| 1062 | return found, nil |
| 1063 | } |
| 1064 | |
| 1065 | // applyLinux replaces the running binary with the one inside the downloaded |
| 1066 | // tar.gz; the caller relaunches afterwards. |
| 1067 | func applyLinux(targz []byte, prepared *repair.UpdateTransaction) error { |
| 1068 | release, err := extractLinuxReleaseUnit(targz) |
| 1069 | if err != nil { |
| 1070 | return err |
| 1071 | } |
| 1072 | bin := release["reasonix-desktop"] |
| 1073 | guard := release["reasonix-guard"] |
| 1074 | cli := release["reasonix"] |
| 1075 | exe := currentExecutablePathForLinux() |
| 1076 | if exe == "" { |
| 1077 | return fmt.Errorf("update: current executable path is unavailable") |
| 1078 | } |
| 1079 | releasePaths := releaseUnitPathsFor(filepath.Dir(exe), "linux") |
| 1080 | if prepared == nil { |
| 1081 | return fmt.Errorf("update: prepared transaction is unavailable") |
| 1082 | } |
| 1083 | claimed, releaseClaim, err := repair.ClaimPendingFileUpdateExact( |
| 1084 | prepared.ToVersion, |
| 1085 | prepared.CreatedAt, |
| 1086 | repair.UpdateTransactionID(prepared), |
| 1087 | exe, |
| 1088 | releasePaths, |
| 1089 | 2*time.Minute, |
| 1090 | ) |
| 1091 | if err != nil { |
| 1092 | return fmt.Errorf("update: claim prepared transaction: %w", err) |
| 1093 | } |
| 1094 | defer releaseClaim() |
| 1095 | if err := repair.MarkUpdateApplyFailedExact(claimed, "Linux update publish did not complete"); err != nil { |
| 1096 | return fmt.Errorf("update: record recovery intent: %w", err) |
| 1097 | } |
| 1098 | receipts, err := applyLinuxReleaseUnit(claimed, exe, bin, guard, cli) |
| 1099 | if err != nil { |
| 1100 | return err |
| 1101 | } |
| 1102 | if _, err := repair.RecordClaimedFileUpdateInstalled(claimed, receipts...); err != nil { |
| 1103 | return fmt.Errorf("update: record installed release unit: %w", err) |
| 1104 | } |
| 1105 | // pending-update.json remains immutable; the transaction-unique sidecar now |
| 1106 | // binds every installed member. A crash before marker cleanup is safe: |
| 1107 | // startup correlates the exact transaction and rolls the release unit back. |
| 1108 | _ = repair.ClearUpdateApplyFailureExact(claimed) |
| 1109 | return nil |
| 1110 | } |
| 1111 | |
| 1112 | // applyLinuxVersioned publishes a verified compatibility tarball into a new |
| 1113 | // version directory and swaps current.json last. The tar still contains the |
| 1114 | // one-shot reasonix-guard member for v1.18-v1.19 updaters, but v1.20+ ignores |
| 1115 | // that member and never persists it again. |
| 1116 | func applyLinuxVersioned(targz []byte, targetVersion string) error { |
| 1117 | return activateLinuxShellRelease(targz, targetVersion, currentInstallDirForLinuxUpdate()) |
| 1118 | } |
| 1119 | |
| 1120 | var currentExecutablePathForLinux = currentExecutablePath |
| 1121 | var currentInstallDirForLinuxUpdate = currentInstallDir |
| 1122 | |
| 1123 | var applyLinuxReleaseUnit = func( |
| 1124 | claimed *repair.UpdateTransaction, |
| 1125 | exe string, |
| 1126 | bin, guard, cli []byte, |
| 1127 | ) ([]repair.FileUpdateInstallReceipt, error) { |
| 1128 | receipts := make([]repair.FileUpdateInstallReceipt, 0, 3) |
| 1129 | receipt, err := repair.PublishClaimedFileUpdateMemberExact(claimed, filepath.Join(filepath.Dir(exe), "reasonix"), cli, 0o700) |
| 1130 | if err != nil { |
| 1131 | return receipts, fmt.Errorf("update CLI sidecar: %w", err) |
| 1132 | } |
| 1133 | receipts = append(receipts, receipt) |
| 1134 | receipt, err = repair.PublishClaimedFileUpdateMemberExact(claimed, filepath.Join(filepath.Dir(exe), "reasonix-guard"), guard, 0o700) |
| 1135 | if err != nil { |
| 1136 | return receipts, fmt.Errorf("update Guard: %w", err) |
| 1137 | } |
| 1138 | receipts = append(receipts, receipt) |
| 1139 | receipt, err = repair.PublishClaimedFileUpdateMemberExact(claimed, exe, bin, 0o700) |
| 1140 | if err != nil { |
| 1141 | return receipts, fmt.Errorf("update desktop: %w", err) |
| 1142 | } |
| 1143 | receipts = append(receipts, receipt) |
| 1144 | return receipts, nil |
| 1145 | } |
| 1146 | |
| 1147 | func applyWindowsFile(path, expectedSHA256, targetVersion string, prepared *repair.UpdateTransaction) error { |
| 1148 | installDir := currentInstallDir() |
| 1149 | if installlayout.HasCurrent(installDir) { |
| 1150 | return startWindowsVersionedUpdateHandoff( |
| 1151 | path, |
| 1152 | expectedSHA256, |
| 1153 | installDir, |
| 1154 | currentLauncherPath(), |
| 1155 | targetVersion, |
| 1156 | ) |
| 1157 | } |
| 1158 | if prepared == nil { |
| 1159 | return fmt.Errorf("update: prepared transaction is unavailable") |
| 1160 | } |
| 1161 | return startWindowsUpdateHandoff( |
| 1162 | path, |
| 1163 | expectedSHA256, |
| 1164 | installDir, |
| 1165 | currentLauncherPath(), |
| 1166 | prepared, |
| 1167 | ) |
| 1168 | } |
| 1169 | |
| 1170 | func currentExecutablePath() string { |
| 1171 | exe, err := os.Executable() |
| 1172 | if err != nil { |
| 1173 | return "" |
| 1174 | } |
| 1175 | if resolved, err := filepath.EvalSymlinks(exe); err == nil { |
| 1176 | exe = resolved |
| 1177 | } |
| 1178 | return exe |
| 1179 | } |
| 1180 | |
| 1181 | // currentInstallDir is the InstallRoot for updates. For the versioned layout it |
| 1182 | // is the directory that owns current.json (not versions/<ver>/). For flat |
| 1183 | // installs it is the directory of the running executable. |
| 1184 | func currentInstallDir() string { |
| 1185 | exe := currentExecutablePath() |
| 1186 | if exe == "" { |
| 1187 | return "" |
| 1188 | } |
| 1189 | if root, err := installlayout.ResolveInstallRoot(exe); err == nil && root != "" { |
| 1190 | return root |
| 1191 | } |
| 1192 | return filepath.Dir(exe) |
| 1193 | } |
| 1194 | |
| 1195 | // archiveSupersededPendingUpdateAfterReady retires a transaction only after the |
| 1196 | // current desktop has shown a usable UI. App-bundle recovery handles interrupted |
| 1197 | // macOS generations; the versioned-layout branch handles older flat Windows and |
| 1198 | // Linux transactions. |
| 1199 | func archiveSupersededPendingUpdateAfterReady() (bool, error) { |
| 1200 | exe := currentExecutablePath() |
| 1201 | if exe == "" || version == "" || version == "dev" { |
| 1202 | return false, nil |
| 1203 | } |
| 1204 | if archived, err := repair.ArchiveSupersededPendingAppBundleUpdate(version); err != nil || archived { |
| 1205 | return archived, err |
| 1206 | } |
| 1207 | if runtime.GOOS == "darwin" { |
| 1208 | return false, nil |
| 1209 | } |
| 1210 | root, err := installlayout.ResolveInstallRoot(exe) |
| 1211 | if err != nil { |
| 1212 | return false, err |
| 1213 | } |
| 1214 | ptr, err := installlayout.ReadCurrent(root) |
| 1215 | if err != nil { |
| 1216 | // Package-managed and legacy flat installs have no versioned pointer and |
| 1217 | // therefore are not authorized to retire a transaction. |
| 1218 | if os.IsNotExist(err) { |
| 1219 | return false, nil |
| 1220 | } |
| 1221 | return false, err |
| 1222 | } |
| 1223 | running := strings.TrimSpace(version) |
| 1224 | if !strings.HasPrefix(running, "v") { |
| 1225 | running = "v" + running |
| 1226 | } |
| 1227 | if ptr.ActiveVersion != running { |
| 1228 | return false, fmt.Errorf("active install version %s does not match running version %s", ptr.ActiveVersion, running) |
| 1229 | } |
| 1230 | return repair.ArchiveSupersededPendingFileUpdate(running, root) |
| 1231 | } |
| 1232 | |
| 1233 | func capturePendingUpdateHealthIdentity(app *App) { |
| 1234 | if app == nil { |
| 1235 | return |
| 1236 | } |
| 1237 | tx, err := readPendingUpdateForHealth() |
| 1238 | if err != nil || tx == nil || !repair.UpdateVersionsEqual(tx.ToVersion, version) { |
| 1239 | return |
| 1240 | } |
| 1241 | app.healthyUpdateCreatedAt = tx.CreatedAt |
| 1242 | app.healthyUpdateTransactionID = repair.UpdateTransactionID(tx) |
| 1243 | } |
| 1244 | |
| 1245 | // refreshPendingUpdateHealthIdentity re-reads the current probationary |
| 1246 | // transaction so a user-initiated update can commit health even when the |
| 1247 | // process started without a matching identity (for example a historical |
| 1248 | // version-prefix mismatch). |
| 1249 | func refreshPendingUpdateHealthIdentity(app *App) { |
| 1250 | capturePendingUpdateHealthIdentity(app) |
| 1251 | } |
| 1252 | |
| 1253 | // updateSiblingArtifacts lists the packaged binaries an update replaces beside |
| 1254 | // the main executable, so PrepareFileUpdate can snapshot the complete release |
| 1255 | // unit. Paths that do not exist on disk are skipped by the backup. |
| 1256 | func updateSiblingArtifacts() []string { |
| 1257 | dir := currentInstallDir() |
| 1258 | if dir == "" { |
| 1259 | return nil |
| 1260 | } |
| 1261 | paths := releaseUnitPathsFor(dir, runtime.GOOS) |
| 1262 | if len(paths) <= 1 { |
| 1263 | return nil |
| 1264 | } |
| 1265 | return paths[1:] |
| 1266 | } |
| 1267 | |
| 1268 | func releaseUnitPathsFor(dir, goos string) []string { |
| 1269 | if dir == "" { |
| 1270 | return nil |
| 1271 | } |
| 1272 | // Versioned-v1 layout: primary is the active desktop under versions/. |
| 1273 | if goos == "windows" && installlayout.HasCurrent(dir) { |
| 1274 | paths := make([]string, 0, 6) |
| 1275 | if desktop, err := installlayout.ActiveDesktopPath(dir); err == nil { |
| 1276 | paths = append(paths, desktop) |
| 1277 | } else { |
| 1278 | paths = append(paths, filepath.Join(dir, "reasonix-desktop.exe")) |
| 1279 | } |
| 1280 | if helper, err := installlayout.ActiveUpdateHelperPath(dir); err == nil { |
| 1281 | paths = append(paths, helper) |
| 1282 | } |
| 1283 | if cli, err := installlayout.ActiveCLIPath(dir); err == nil { |
| 1284 | paths = append(paths, cli) |
| 1285 | } |
| 1286 | for _, name := range []string{"reasonix-launcher.exe", "reasonix-cli.exe", "Reasonix.exe"} { |
| 1287 | paths = append(paths, filepath.Join(dir, name)) |
| 1288 | } |
| 1289 | return paths |
| 1290 | } |
| 1291 | names := updateSiblingNames(goos) |
| 1292 | paths := make([]string, 0, len(names)+1) |
| 1293 | switch goos { |
| 1294 | case "linux": |
| 1295 | paths = append(paths, filepath.Join(dir, "reasonix-desktop")) |
| 1296 | case "windows": |
| 1297 | paths = append(paths, filepath.Join(dir, "reasonix-desktop.exe")) |
| 1298 | } |
| 1299 | if len(names) == 0 { |
| 1300 | return paths |
| 1301 | } |
| 1302 | for _, name := range names { |
| 1303 | paths = append(paths, filepath.Join(dir, name)) |
| 1304 | } |
| 1305 | return paths |
| 1306 | } |
| 1307 | |
| 1308 | func updateSiblingNames(goos string) []string { |
| 1309 | switch goos { |
| 1310 | case "windows": |
| 1311 | // Legacy flat release unit. reasonix-guard.exe may still exist on disk |
| 1312 | // during migration from 1.18–1.19.1; the new layout omits it. |
| 1313 | return []string{"reasonix-guard.exe", "reasonix-launcher.exe", "reasonix-update-helper.exe", "reasonix-cli.exe", "Reasonix.exe"} |
| 1314 | case "linux": |
| 1315 | return []string{"reasonix-guard", "reasonix"} |
| 1316 | default: |
| 1317 | return nil |
| 1318 | } |
| 1319 | } |
| 1320 | |
| 1321 | func currentLauncherPath() string { |
| 1322 | return launcherPathForExecutable(currentExecutablePath()) |
| 1323 | } |
| 1324 | |
| 1325 | func launcherPathForExecutable(exe string) string { |
| 1326 | if exe == "" { |
| 1327 | return "" |
| 1328 | } |
| 1329 | root := filepath.Dir(exe) |
| 1330 | if resolved, err := installlayout.ResolveInstallRoot(exe); err == nil && resolved != "" { |
| 1331 | root = resolved |
| 1332 | } |
| 1333 | if path, err := installlayout.StableRelaunchPath(root); err == nil { |
| 1334 | return path |
| 1335 | } |
| 1336 | if installlayout.IsSupersededVersionedDesktop(root, exe) { |
| 1337 | return filepath.Join(root, installlayout.LauncherBinaryName()) |
| 1338 | } |
| 1339 | return exe |
| 1340 | } |
| 1341 |