Files
hermes-agent/apps/desktop/electron/main.cjs
teknium1 bcb024ad48 fix(desktop): fail remote test when OAuth ws-ticket mint fails
Youssef's review caught a residual false-positive: resolveTestWsUrl
swallowed an OAuth ticket-mint failure and returned null, so the caller
skipped the WS probe and reported the remote test as reachable. But the
real boot path (resolveRemoteBackend) treats a mint failure as a hard
'session expired' auth error and refuses to connect — so an expired OAuth
session passed the test then failed boot, the exact false-positive this
PR exists to kill.

Extract resolveTestWsUrl into the electron-free connection-config.cjs
(injectable mintTicket) so it's unit-testable, and make OAuth mint
failure throw an actionable needsOauthLogin error instead of skipping.
Adds the three cases Youssef requested plus a mintTicket-required guard.
2026-06-04 19:49:06 -07:00

4982 lines
171 KiB
JavaScript
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const {
app,
BrowserWindow,
Menu,
Notification,
clipboard,
dialog,
ipcMain,
nativeImage,
nativeTheme,
net: electronNet,
powerMonitor,
protocol,
safeStorage,
session,
shell,
systemPreferences
} = require('electron')
const crypto = require('node:crypto')
const fs = require('node:fs')
const http = require('node:http')
const https = require('node:https')
const net = require('node:net')
const path = require('node:path')
const { fileURLToPath, pathToFileURL } = require('node:url')
const { execFileSync, spawn } = require('node:child_process')
const { detectRemoteDisplay, isWindowsBinaryPathInWsl, isWslEnvironment } = require('./bootstrap-platform.cjs')
const { runBootstrap } = require('./bootstrap-runner.cjs')
const { canImportHermesCli, verifyHermesCli } = require('./backend-probes.cjs')
const { probeGatewayWebSocket } = require('./gateway-ws-probe.cjs')
const {
authModeFromStatus,
buildGatewayWsUrl,
buildGatewayWsUrlWithTicket,
cookiesHaveSession,
normalizeRemoteBaseUrl,
resolveAuthMode,
resolveTestWsUrl,
tokenPreview
} = require('./connection-config.cjs')
const {
DATA_URL_READ_MAX_BYTES,
DEFAULT_FETCH_TIMEOUT_MS,
TEXT_PREVIEW_SOURCE_MAX_BYTES,
encryptDesktopSecret: encryptDesktopSecretStrict,
resolveReadableFileForIpc,
resolveTimeoutMs
} = require('./hardening.cjs')
let nodePty = null
try {
nodePty = require('node-pty')
} catch {
// Packaged builds set `files:` in package.json, which excludes node_modules
// from the asar. Workspace dedup also hoists this native dep to the repo
// root's node_modules, out of reach of electron-builder's collector. We
// ship a minimal copy under resources/native-deps/ via extraResources +
// scripts/stage-native-deps.cjs; resolve from there when the normal
// require() fails. Dev mode never reaches this branch -- the hoisted
// resolve succeeds via Node's normal module lookup.
try {
const path = require('node:path')
const resourcesPath = process.resourcesPath
if (resourcesPath) {
nodePty = require(path.join(resourcesPath, 'native-deps', 'node-pty'))
}
} catch {
nodePty = null
}
}
const USER_DATA_OVERRIDE = process.env.HERMES_DESKTOP_USER_DATA_DIR
if (USER_DATA_OVERRIDE) {
const resolvedUserData = path.resolve(USER_DATA_OVERRIDE)
fs.mkdirSync(resolvedUserData, { recursive: true })
app.setPath('userData', resolvedUserData)
}
const PORT_FLOOR = 9120
const PORT_CEILING = 9199
const DEV_SERVER = process.env.HERMES_DESKTOP_DEV_SERVER
const IS_PACKAGED = app.isPackaged
const IS_MAC = process.platform === 'darwin'
const IS_WINDOWS = process.platform === 'win32'
const IS_WSL = isWslEnvironment()
const APP_ROOT = app.getAppPath()
// Remote displays (SSH X11 forwarding, VNC, RDP) make Chromium's GPU
// compositor flicker — accelerated layers can't be presented cleanly over the
// wire, so the window flashes during scroll/streaming/animation. Local
// Windows/macOS (and WSLg, which renders locally via vGPU) composite on the
// GPU and never see it. Fall back to software rendering when a remote display
// is detected; it's rock-steady over the wire and the CPU cost is negligible
// next to the connection's latency. Must run before app `ready` — these
// switches only apply pre-launch. Override with HERMES_DESKTOP_DISABLE_GPU
// (1/true → always disable, 0/false → keep GPU on).
const REMOTE_DISPLAY_REASON = detectRemoteDisplay()
if (REMOTE_DISPLAY_REASON) {
app.disableHardwareAcceleration()
// Belt-and-suspenders for X11/VNC, where the Viz compositor can still glitch
// with only --disable-gpu: force compositing onto the CPU too.
app.commandLine.appendSwitch('disable-gpu-compositing')
console.log(
`[hermes] remote display detected (${REMOTE_DISPLAY_REASON}); disabling GPU hardware acceleration to prevent flicker`
)
}
const SOURCE_REPO_ROOT = path.resolve(APP_ROOT, '../..')
// Build-time install stamp -- the git ref this .exe was built against.
//
// Written by apps/desktop/scripts/write-build-stamp.cjs during `npm run build`
// and bundled into packaged apps via electron-builder's extraResources entry,
// so the runtime stamp ends up at process.resourcesPath/install-stamp.json
// after install. The bootstrap runner (Phase 1D) reads it to know which
// commit to clone when running install.ps1 stages at first launch.
//
// Returns null when the file is missing (dev runs from a checkout where
// build hasn't been invoked, or schema mismatch). Callers must handle null.
//
// Schema:
// { schemaVersion: 1, commit, branch, builtAt, dirty, source }
const INSTALL_STAMP_SCHEMA_VERSION = 1
function loadInstallStamp() {
// Try packaged location first (resources/install-stamp.json), then the
// dev/local build output (apps/desktop/build/install-stamp.json) so
// someone running `npm run start` after a local `npm run build` also
// sees a stamp without needing a packaged build.
const candidates = [
process.resourcesPath ? path.join(process.resourcesPath, 'install-stamp.json') : null,
path.join(APP_ROOT, 'build', 'install-stamp.json')
].filter(Boolean)
for (const p of candidates) {
try {
const raw = fs.readFileSync(p, 'utf8')
const parsed = JSON.parse(raw)
if (parsed && typeof parsed === 'object' && typeof parsed.commit === 'string' && parsed.commit.length >= 7) {
if (parsed.schemaVersion !== INSTALL_STAMP_SCHEMA_VERSION) {
console.warn(
`[hermes] install-stamp.json schemaVersion ${parsed.schemaVersion} != expected ${INSTALL_STAMP_SCHEMA_VERSION}; ignoring`
)
continue
}
return Object.freeze({
schemaVersion: parsed.schemaVersion,
commit: parsed.commit,
branch: parsed.branch || null,
builtAt: parsed.builtAt || null,
dirty: Boolean(parsed.dirty),
source: parsed.source || null,
path: p
})
}
} catch {
// Either ENOENT or malformed JSON; try the next candidate
}
}
return null
}
const INSTALL_STAMP = loadInstallStamp()
if (INSTALL_STAMP) {
console.log(
`[hermes] install stamp: ${INSTALL_STAMP.commit.slice(0, 12)}${INSTALL_STAMP.branch ? ` (${INSTALL_STAMP.branch})` : ''}${INSTALL_STAMP.dirty ? ' [DIRTY]' : ''} from ${INSTALL_STAMP.source || 'unknown'}`
)
} else if (IS_PACKAGED) {
// Dev builds without a stamp are normal; packaged builds without one
// mean the bootstrap won't know what to clone. Surface clearly.
console.error(
'[hermes] WARNING: no install-stamp.json found in packaged build. First-launch bootstrap will not have a pinned ref to install.'
)
}
// HERMES_HOME — the user-facing root for everything Hermes-related. Mirrors
// scripts/install.ps1's $HermesHome and scripts/install.sh's $HERMES_HOME.
//
// Defaults:
// Windows: %LOCALAPPDATA%\hermes (matches install.ps1)
// macOS / Linux: ~/.hermes (matches install.sh)
//
// Special case for Windows: if the user has a legacy ~/.hermes directory
// (e.g., from a prior pip install or a manual setup) AND no
// %LOCALAPPDATA%\hermes yet, prefer the legacy path so we don't orphan their
// existing config / sessions / .env. New installs go to %LOCALAPPDATA%.
//
// HERMES_DESKTOP_USER_DATA_DIR (used by test:desktop:fresh) puts the sandbox
// HERMES_HOME beneath the throwaway userData dir so a fresh-install run never
// touches the user's real ~/.hermes / %LOCALAPPDATA%\hermes.
function resolveHermesHome() {
if (process.env.HERMES_HOME) return path.resolve(process.env.HERMES_HOME)
if (USER_DATA_OVERRIDE) return path.join(path.resolve(USER_DATA_OVERRIDE), 'hermes-home')
if (IS_WINDOWS && process.env.LOCALAPPDATA) {
const localappdata = path.join(process.env.LOCALAPPDATA, 'hermes')
const legacy = path.join(app.getPath('home'), '.hermes')
// Migrate transparently to LOCALAPPDATA, but honour an existing legacy
// ~/.hermes setup (no LOCALAPPDATA install yet) so users don't lose state.
if (!directoryExists(localappdata) && directoryExists(legacy)) return legacy
return localappdata
}
return path.join(app.getPath('home'), '.hermes')
}
const HERMES_HOME = resolveHermesHome()
// ACTIVE_HERMES_ROOT — the canonical mutable Hermes install. Same path
// install.ps1 / install.sh use, so a desktop-only user and a CLI-only user end
// up with identical layouts and can share one install.
const ACTIVE_HERMES_ROOT = path.join(HERMES_HOME, 'hermes-agent')
// VENV_ROOT — venv lives inside the repo, exactly like install.ps1 does it.
const VENV_ROOT = path.join(ACTIVE_HERMES_ROOT, 'venv')
// BOOTSTRAP_COMPLETE_MARKER — written by the first-launch bootstrap runner
// (Phase 1D) after install.ps1 has completed all stages and the user has
// finished initial configuration. Presence of this marker means the install
// is in a known-good state and we can skip the bootstrap flow on subsequent
// boots, going straight to `resolveHermesBackend()`. Missing or stale marker
// means we re-run the bootstrap; install.ps1's stages are idempotent so a
// re-run on an already-good install just discovers everything in place.
//
// We deliberately put the marker INSIDE ACTIVE_HERMES_ROOT (not alongside)
// so that deleting the checkout to start fresh also deletes the marker --
// avoids the confusing "marker exists but checkout is gone" state.
const BOOTSTRAP_COMPLETE_MARKER = path.join(ACTIVE_HERMES_ROOT, '.hermes-bootstrap-complete')
const BOOTSTRAP_MARKER_SCHEMA_VERSION = 1
const DESKTOP_CONNECTION_CONFIG_PATH = path.join(app.getPath('userData'), 'connection.json')
const DESKTOP_UPDATE_CONFIG_PATH = path.join(app.getPath('userData'), 'updates.json')
// active-profile.json records which Hermes profile the desktop launches its
// local backend as. When set, startHermes() passes `hermes --profile <name>
// dashboard …`, which deterministically pins HERMES_HOME (see
// _apply_profile_override in hermes_cli/main.py) and bypasses the sticky
// ~/.hermes/active_profile file. Unset (null) preserves the legacy behavior:
// no --profile flag, so the backend honors active_profile / default.
const DESKTOP_PROFILE_CONFIG_PATH = path.join(app.getPath('userData'), 'active-profile.json')
// Mirrors hermes_cli.profiles._PROFILE_ID_RE so we never hand the backend a
// value its profile resolver would reject and exit on.
const PROFILE_NAME_RE = /^[a-z0-9][a-z0-9_-]{0,63}$/
// Branch we track for self-update. The GUI work has merged to main, so this
// tracks main. User can also override at runtime via
// hermesDesktop.updates.setBranch().
const DEFAULT_UPDATE_BRANCH = 'main'
// desktop.log lives under HERMES_HOME/logs/ so it sits next to agent.log,
// errors.log, gateway.log produced by hermes_logging.setup_logging — one log
// directory per user, regardless of which UI surface produced the line.
const DESKTOP_LOG_PATH = path.join(HERMES_HOME, 'logs', 'desktop.log')
const DESKTOP_LOG_FLUSH_MS = 120
const DESKTOP_LOG_BUFFER_MAX_CHARS = 64 * 1024
const BOOT_FAKE_MODE = process.env.HERMES_DESKTOP_BOOT_FAKE === '1'
const BOOT_FAKE_STEP_MS = (() => {
const raw = Number.parseInt(String(process.env.HERMES_DESKTOP_BOOT_FAKE_STEP_MS || ''), 10)
if (!Number.isFinite(raw) || raw <= 0) return 650
return Math.max(120, raw)
})()
const APP_NAME = 'Hermes'
const TITLEBAR_HEIGHT = 34
const MACOS_TRAFFIC_LIGHTS_HEIGHT = 14
const WINDOW_BUTTON_POSITION = {
x: 24,
y: TITLEBAR_HEIGHT / 2 - MACOS_TRAFFIC_LIGHTS_HEIGHT / 2
}
// Width Electron reserves for the Windows/Linux native min/max/close cluster
// when `titleBarOverlay` is enabled. The OS paints these buttons in the
// top-right corner of the renderer; we have to leave that much room on the
// right edge so our system tools (file browser, haptics, settings) don't sit
// underneath them. macOS uses left-side traffic lights instead and reports a
// position via getWindowButtonPosition(), so this width is non-zero only on
// non-macOS platforms.
const NATIVE_OVERLAY_BUTTON_WIDTH = 144
const APP_ICON_PATHS = [
path.join(APP_ROOT, 'public', 'apple-touch-icon.png'),
path.join(APP_ROOT, 'dist', 'apple-touch-icon.png'),
path.join(unpackedPathFor(APP_ROOT), 'dist', 'apple-touch-icon.png')
]
let rendererTitleBarTheme = null
const terminalSessions = new Map()
function isHexColor(value) {
return typeof value === 'string' && /^#[0-9a-f]{6}$/i.test(value)
}
function getTitleBarOverlayOptions() {
if (IS_MAC) {
return { height: TITLEBAR_HEIGHT }
}
if (rendererTitleBarTheme) {
return {
color: rendererTitleBarTheme.background,
height: TITLEBAR_HEIGHT,
symbolColor: rendererTitleBarTheme.foreground
}
}
const useDarkColors = nativeTheme.shouldUseDarkColors
return {
color: useDarkColors ? '#111111' : '#f7f7f7',
height: TITLEBAR_HEIGHT,
symbolColor: useDarkColors ? '#f7f7f7' : '#242424'
}
}
const MEDIA_MIME_TYPES = {
'.avi': 'video/x-msvideo',
'.bmp': 'image/bmp',
'.flac': 'audio/flac',
'.gif': 'image/gif',
'.jpeg': 'image/jpeg',
'.jpg': 'image/jpeg',
'.m4a': 'audio/mp4',
'.mkv': 'video/x-matroska',
'.mov': 'video/quicktime',
'.mp3': 'audio/mpeg',
'.mp4': 'video/mp4',
'.ogg': 'audio/ogg',
'.opus': 'audio/ogg; codecs=opus',
'.png': 'image/png',
'.svg': 'image/svg+xml',
'.wav': 'audio/wav',
'.webm': 'video/webm',
'.webp': 'image/webp'
}
const PREVIEW_HTML_EXTENSIONS = new Set(['.html', '.htm'])
const PREVIEW_WATCH_DEBOUNCE_MS = 120
const LOCAL_PREVIEW_HOSTS = new Set(['0.0.0.0', '127.0.0.1', '::1', '[::1]', 'localhost'])
const TEXT_PREVIEW_MAX_BYTES = 512 * 1024
const PREVIEW_LANGUAGE_BY_EXT = {
'.c': 'c',
'.conf': 'ini',
'.cpp': 'cpp',
'.css': 'css',
'.csv': 'csv',
'.go': 'go',
'.graphql': 'graphql',
'.h': 'c',
'.hpp': 'cpp',
'.html': 'html',
'.java': 'java',
'.js': 'javascript',
'.json': 'json',
'.jsx': 'jsx',
'.kt': 'kotlin',
'.lua': 'lua',
'.md': 'markdown',
'.mjs': 'javascript',
'.py': 'python',
'.rb': 'ruby',
'.rs': 'rust',
'.sh': 'shell',
'.sql': 'sql',
'.svg': 'xml',
'.toml': 'toml',
'.ts': 'typescript',
'.tsx': 'tsx',
'.txt': 'text',
'.xml': 'xml',
'.yaml': 'yaml',
'.yml': 'yaml',
'.zsh': 'shell'
}
function looksBinary(buffer) {
if (!buffer.length) return false
let suspicious = 0
for (const byte of buffer) {
if (byte === 0) return true
// Allow common whitespace controls: tab, LF, CR.
if (byte < 32 && byte !== 9 && byte !== 10 && byte !== 13) suspicious += 1
}
return suspicious / buffer.length > 0.12
}
function previewFileMetadata(filePath, mimeType) {
let byteSize = 0
let binary = false
try {
const stat = fs.statSync(filePath)
byteSize = stat.size
if (!mimeType.startsWith('image/')) {
const fd = fs.openSync(filePath, 'r')
try {
const sample = Buffer.alloc(Math.min(byteSize, 4096))
const bytesRead = fs.readSync(fd, sample, 0, sample.length, 0)
binary = looksBinary(sample.subarray(0, bytesRead))
} finally {
fs.closeSync(fd)
}
}
} catch {
// Metadata is best-effort; the read handlers surface hard errors later.
}
return {
binary,
byteSize,
large: byteSize > TEXT_PREVIEW_MAX_BYTES
}
}
app.setName(APP_NAME)
app.setAboutPanelOptions({
applicationName: APP_NAME,
copyright: 'Copyright © 2026 Nous Research'
})
// Custom scheme for streaming local media (video/audio) into the renderer.
// Reading large media through `readFileDataUrl` failed: it base64-loads the
// whole file into memory and is hard-capped at DATA_URL_READ_MAX_BYTES (16 MB),
// so any non-trivial video silently refused to load. Streaming via a protocol
// handler removes the size cap and gives the <video> element seekable,
// range-aware playback. Must be registered before the app is ready.
const MEDIA_PROTOCOL = 'hermes-media'
// Only audio/video may be streamed. Without this the handler would read any
// non-blocklisted local file (no size cap) for any `fetch(hermes-media://…)`.
const STREAMABLE_MEDIA_EXTS = new Set([
'.avi',
'.flac',
'.m4a',
'.mkv',
'.mov',
'.mp3',
'.mp4',
'.ogg',
'.opus',
'.wav',
'.webm'
])
protocol.registerSchemesAsPrivileged([
{
scheme: MEDIA_PROTOCOL,
privileges: {
secure: true,
standard: true,
stream: true,
supportFetchAPI: true
}
}
])
function registerMediaProtocol() {
protocol.handle(MEDIA_PROTOCOL, async request => {
let resolvedPath
try {
const url = new URL(request.url)
const filePath = decodeURIComponent(url.pathname.replace(/^\/+/, ''))
;({ resolvedPath } = await resolveReadableFileForIpc(filePath, { purpose: 'Media stream' }))
} catch {
return new Response('Media not found', { status: 404 })
}
if (!STREAMABLE_MEDIA_EXTS.has(path.extname(resolvedPath).toLowerCase())) {
return new Response('Unsupported media type', { status: 415 })
}
// Delegate to Electron's net stack on a file:// URL — it resolves the
// content-type and honors Range requests so seeking works. Forward the
// renderer's headers (notably Range) and skip custom-protocol re-entry.
return electronNet.fetch(pathToFileURL(resolvedPath).toString(), {
bypassCustomProtocolHandlers: true,
headers: request.headers
})
})
}
let mainWindow = null
let hermesProcess = null
let connectionPromise = null
// Additional per-profile backends, keyed by profile name. The PRIMARY backend
// (the desktop's launch profile) stays managed by hermesProcess +
// connectionPromise + startHermes(); this pool only holds EXTRA profile
// backends spawned lazily when a session belongs to a different profile. A user
// with no named profiles never populates this map, so their experience is
// byte-for-byte the single-backend behavior.
const backendPool = new Map() // profile -> { process, port, token, connectionPromise, lastActiveAt }
// Keep the pool light: cap concurrent profile backends (LRU eviction) and reap
// idle ones. A user idles at exactly the primary backend; pool backends only
// exist while a non-primary profile is actively being chatted through.
const POOL_MAX_BACKENDS = Math.max(1, Number(process.env.HERMES_DESKTOP_POOL_MAX) || 3)
const POOL_IDLE_MS = Math.max(60_000, Number(process.env.HERMES_DESKTOP_POOL_IDLE_MS) || 10 * 60_000)
// A backend touched within this window has a live renderer socket (the keepalive
// pings every 60s for every open profile). LRU eviction must spare these — a
// concurrent multi-profile session keeps several backends "fresh" at once, and
// killing one to honor the soft cap would abort a running agent.
const POOL_KEEPALIVE_FRESH_MS = 90_000
let poolIdleReaper = null
// Auto-reload budget for renderer crashes. A deterministic startup crash would
// otherwise loop forever (reload → crash → reload), pinning CPU and spamming
// logs. Allow a few reloads per rolling window, then stop and leave the dead
// window so the user can read the error / quit.
const RENDERER_RELOAD_WINDOW_MS = 60_000
const RENDERER_RELOAD_MAX = 3
let rendererReloadTimes = []
// Latched bootstrap failure: when the first-launch install fails, we hold
// onto the error so subsequent startHermes() calls (e.g. the renderer's
// ensureGatewayOpen retrying after the WS won't open) return the same error
// instead of re-running install.ps1 in a hot loop. Cleared explicitly by
// the renderer's "Reload and retry" path or by quitting the app.
let bootstrapFailure = null
// Active first-launch install, so the renderer's Cancel button (and app quit)
// can abort the in-flight install.sh/ps1 instead of leaving it running.
let bootstrapAbortController = null
let connectionConfigCache = null
let connectionConfigCacheMtime = null
const hermesLog = []
const previewWatchers = new Map()
let previewShortcutActive = false
let desktopLogBuffer = ''
let desktopLogFlushTimer = null
let desktopLogFlushPromise = Promise.resolve()
let nativeThemeListenerInstalled = false
let bootProgressState = {
error: null,
fakeMode: BOOT_FAKE_MODE,
message: 'Waiting to start Hermes backend',
phase: 'idle',
progress: 0,
running: false,
timestamp: Date.now()
}
function flushDesktopLogBufferSync() {
if (!desktopLogBuffer) return
const chunk = desktopLogBuffer
desktopLogBuffer = ''
try {
fs.mkdirSync(path.dirname(DESKTOP_LOG_PATH), { recursive: true })
fs.appendFileSync(DESKTOP_LOG_PATH, chunk)
} catch {
// Logging must never block app startup/shutdown.
}
}
function flushDesktopLogBufferAsync() {
if (!desktopLogBuffer) return desktopLogFlushPromise
const chunk = desktopLogBuffer
desktopLogBuffer = ''
desktopLogFlushPromise = desktopLogFlushPromise
.then(async () => {
await fs.promises.mkdir(path.dirname(DESKTOP_LOG_PATH), { recursive: true })
await fs.promises.appendFile(DESKTOP_LOG_PATH, chunk)
})
.catch(() => {
// Logging must never crash the desktop shell.
})
return desktopLogFlushPromise
}
function scheduleDesktopLogFlush() {
if (desktopLogFlushTimer) return
desktopLogFlushTimer = setTimeout(() => {
desktopLogFlushTimer = null
void flushDesktopLogBufferAsync()
}, DESKTOP_LOG_FLUSH_MS)
}
function rememberLog(chunk) {
const text = String(chunk || '').trim()
if (!text) return
const lines = text.split(/\r?\n/).map(line => `[hermes] ${line}`)
hermesLog.push(...lines)
if (hermesLog.length > 300) {
hermesLog.splice(0, hermesLog.length - 300)
}
desktopLogBuffer += `${lines.join('\n')}\n`
if (desktopLogBuffer.length >= DESKTOP_LOG_BUFFER_MAX_CHARS) {
if (desktopLogFlushTimer) {
clearTimeout(desktopLogFlushTimer)
desktopLogFlushTimer = null
}
void flushDesktopLogBufferAsync()
return
}
scheduleDesktopLogFlush()
}
function openExternalUrl(rawUrl) {
const raw = String(rawUrl || '').trim()
if (!raw) return false
let parsed
try {
parsed = new URL(raw)
} catch {
return false
}
// `file://` URLs come from the artifacts panel (the renderer can't open
// them itself because Chromium blocks file:// navigation from the app
// origin). Hand them to `shell.openPath`, which dispatches to the OS
// file association. If the OS can't open it (`error` is a non-empty
// string), fall back to revealing the file in the system file manager.
if (parsed.protocol === 'file:') {
let localPath
try {
localPath = fileURLToPath(parsed.toString())
} catch {
return false
}
void shell
.openPath(localPath)
.then(error => {
if (!error) {
return
}
rememberLog(`[file] openPath failed: ${error}; revealing in folder instead`)
try {
shell.showItemInFolder(localPath)
} catch (revealError) {
rememberLog(`[file] showItemInFolder failed: ${revealError.message}`)
}
})
.catch(error => rememberLog(`[file] openPath rejected: ${error.message}`))
return true
}
if (!['http:', 'https:', 'mailto:'].includes(parsed.protocol)) {
return false
}
const url = parsed.toString()
if (IS_WSL) {
rememberLog(`[link] opening via WSL→Windows: ${url}`)
const proc = spawn('cmd.exe', ['/c', 'start', '""', url], {
detached: true,
stdio: 'ignore',
windowsHide: true
})
proc.on('error', error => {
rememberLog(`[link] cmd.exe start failed: ${error.message}; falling back to xdg-open`)
shell.openExternal(url).catch(fallback => rememberLog(`[link] xdg-open failed: ${fallback.message}`))
})
proc.unref()
return true
}
shell.openExternal(url).catch(error => rememberLog(`[link] openExternal failed: ${error.message}`))
return true
}
function ensureWslWindowsFonts() {
if (!IS_WSL) return
const fontsDir = ['/mnt/c/Windows/Fonts', '/mnt/c/windows/fonts'].find(candidate => {
try {
return fs.statSync(candidate).isDirectory()
} catch {
return false
}
})
if (!fontsDir) return
try {
const confDir = path.join(app.getPath('home'), '.config', 'fontconfig', 'conf.d')
const confPath = path.join(confDir, '99-hermes-wsl-windows-fonts.conf')
let existing = ''
try {
existing = fs.readFileSync(confPath, 'utf8')
} catch {
existing = ''
}
if (existing.includes(fontsDir)) return
fs.mkdirSync(confDir, { recursive: true })
fs.writeFileSync(
confPath,
`<?xml version="1.0"?>\n<!DOCTYPE fontconfig SYSTEM "fonts.dtd">\n<fontconfig>\n <dir>${fontsDir}</dir>\n</fontconfig>\n`
)
rememberLog(`[fonts] wired WSL Windows fonts for renderer: ${fontsDir}`)
const cache = spawn('fc-cache', ['-f', fontsDir], { detached: true, stdio: 'ignore' })
cache.on('error', () => undefined)
cache.unref()
} catch (error) {
rememberLog(`[fonts] WSL font setup skipped: ${error.message}`)
}
}
function sleep(ms) {
return new Promise(resolve => setTimeout(resolve, ms))
}
function clampBootProgress(value) {
const numeric = Number(value)
if (!Number.isFinite(numeric)) return 0
return Math.max(0, Math.min(100, Math.round(numeric)))
}
function broadcastBootProgress() {
if (!mainWindow || mainWindow.isDestroyed()) return
const { webContents } = mainWindow
if (!webContents || webContents.isDestroyed()) return
webContents.send('hermes:boot-progress', bootProgressState)
}
// Bootstrap-event broadcast channel + state. The bootstrap runner emits a
// stream of events (manifest, stage, log, complete, failed) that the renderer
// install overlay subscribes to. We also keep a running snapshot:
// - manifest: the stage list (rendered as a checklist in the overlay)
// - stages: per-stage state ('pending' | 'running' | 'succeeded' |
// 'skipped' | 'failed') keyed by stage name
// - active: true while a bootstrap is in flight; false otherwise
// - error: last 'failed' event's error message
// - log: bounded ring buffer of the last 200 log lines for the
// "Show details" affordance in the overlay
//
// The snapshot is queryable via the hermes:bootstrap:get IPC handler so a
// reloaded renderer (e.g. devtools reload during dev) recovers state.
// Bootstrap log ring: bounded buffer so a long install (npm + playwright
// downloads can emit thousands of lines) doesn't grow unbounded in memory
// AND so the renderer's getBootstrapState() reply stays a reasonable size.
// We keep enough to cover an entire failed stage's transcript so the
// 'Copy output' button gives the user actually-actionable context, not
// just the last few lines.
const BOOTSTRAP_LOG_RING_MAX = 500
let bootstrapState = {
active: false,
manifest: null,
stages: {},
error: null,
log: [],
startedAt: null,
completedAt: null,
unsupportedPlatform: null
}
function broadcastBootstrapEvent(ev) {
if (ev.type === 'manifest') {
bootstrapState.manifest = ev
bootstrapState.active = true
bootstrapState.startedAt = bootstrapState.startedAt || Date.now()
bootstrapState.stages = {}
for (const stage of ev.stages || []) {
bootstrapState.stages[stage.name] = { state: 'pending', json: null, durationMs: null, error: null }
}
} else if (ev.type === 'stage') {
bootstrapState.stages[ev.name] = {
state: ev.state,
durationMs: ev.durationMs ?? null,
json: ev.json ?? null,
error: ev.error ?? null
}
} else if (ev.type === 'log') {
bootstrapState.log.push({ ts: Date.now(), stage: ev.stage || null, line: ev.line, stream: ev.stream || 'stdout' })
if (bootstrapState.log.length > BOOTSTRAP_LOG_RING_MAX) {
bootstrapState.log.splice(0, bootstrapState.log.length - BOOTSTRAP_LOG_RING_MAX)
}
} else if (ev.type === 'complete') {
bootstrapState.active = false
bootstrapState.completedAt = Date.now()
bootstrapState.error = null
bootstrapState.unsupportedPlatform = null
} else if (ev.type === 'failed') {
bootstrapState.active = false
bootstrapState.error = ev.error || 'unknown error'
} else if (ev.type === 'unsupported-platform') {
bootstrapState.active = false
bootstrapState.unsupportedPlatform = {
platform: ev.platform,
activeRoot: ev.activeRoot,
installCommand: ev.installCommand,
docsUrl: ev.docsUrl
}
}
if (!mainWindow || mainWindow.isDestroyed()) return
const { webContents } = mainWindow
if (!webContents || webContents.isDestroyed()) return
webContents.send('hermes:bootstrap:event', ev)
}
function getBootstrapState() {
return bootstrapState
}
function updateBootProgress(update, options = {}) {
const nextProgressRaw =
typeof update.progress === 'number' ? clampBootProgress(update.progress) : bootProgressState.progress
const nextProgress = options.allowDecrease ? nextProgressRaw : Math.max(bootProgressState.progress, nextProgressRaw)
bootProgressState = {
...bootProgressState,
...update,
error: update.error === undefined ? bootProgressState.error : update.error,
fakeMode: BOOT_FAKE_MODE || Boolean(update.fakeMode),
progress: nextProgress,
timestamp: Date.now()
}
if (update.message) {
rememberLog(`[boot] ${update.message}`)
}
broadcastBootProgress()
}
async function advanceBootProgress(phase, message, progress) {
updateBootProgress({
phase,
message,
progress,
running: true,
error: null
})
if (BOOT_FAKE_MODE) {
await sleep(BOOT_FAKE_STEP_MS)
}
}
function fileExists(filePath) {
try {
return fs.statSync(filePath).isFile()
} catch {
return false
}
}
function directoryExists(filePath) {
try {
return fs.statSync(filePath).isDirectory()
} catch {
return false
}
}
function unpackedPathFor(filePath) {
return filePath.replace(/app\.asar(?=$|[\\/])/, 'app.asar.unpacked')
}
function findOnPath(command) {
if (!command) return null
if (path.isAbsolute(command) || command.includes(path.sep) || (IS_WINDOWS && command.includes('/'))) {
if (!fileExists(command)) return null
if (isWindowsBinaryPathInWsl(command, { isWsl: IS_WSL })) return null
return command
}
const pathEntries = String(process.env.PATH || '')
.split(path.delimiter)
.filter(Boolean)
const extensions = IS_WINDOWS
? ['', ...(process.env.PATHEXT || '.COM;.EXE;.BAT;.CMD').split(';').filter(Boolean)]
: ['']
for (const entry of pathEntries) {
for (const extension of extensions) {
const candidate = path.join(entry, `${command}${extension}`)
if (fileExists(candidate)) return candidate
}
}
return null
}
function isCommandScript(command) {
return IS_WINDOWS && /\.(cmd|bat)$/i.test(command || '')
}
function normalizeExecutablePathForCompare(commandPath) {
if (!commandPath) return null
let resolved = path.resolve(String(commandPath))
try {
resolved = fs.realpathSync.native ? fs.realpathSync.native(resolved) : fs.realpathSync(resolved)
} catch {
// Fallback to path.resolve() above.
}
return IS_WINDOWS ? resolved.toLowerCase() : resolved
}
function looksLikeDesktopAppBinary(commandPath) {
if (!IS_WINDOWS || !commandPath) return false
const normalizedCandidate = normalizeExecutablePathForCompare(commandPath)
const normalizedCurrentExec = normalizeExecutablePathForCompare(process.execPath)
if (normalizedCandidate && normalizedCurrentExec && normalizedCandidate === normalizedCurrentExec) {
return true
}
let resolved = path.resolve(String(commandPath))
try {
resolved = fs.realpathSync.native ? fs.realpathSync.native(resolved) : fs.realpathSync(resolved)
} catch {
// Keep resolved path fallback.
}
const resourcesDir = path.join(path.dirname(resolved), 'resources')
return (
fileExists(path.join(resourcesDir, 'app.asar')) || directoryExists(path.join(resourcesDir, 'app.asar.unpacked'))
)
}
function isHermesSourceRoot(root) {
return directoryExists(root) && fileExists(path.join(root, 'hermes_cli', 'main.py'))
}
function findPythonForRoot(root) {
const override = process.env.HERMES_DESKTOP_PYTHON
if (override && fileExists(override)) return override
const relativePaths = IS_WINDOWS
? [path.join('.venv', 'Scripts', 'python.exe'), path.join('venv', 'Scripts', 'python.exe')]
: [path.join('.venv', 'bin', 'python'), path.join('venv', 'bin', 'python')]
for (const relativePath of relativePaths) {
const candidate = path.join(root, relativePath)
if (fileExists(candidate)) return candidate
}
return findSystemPython()
}
function findSystemPython() {
if (!IS_WINDOWS) {
// POSIX systems: PATH lookup is safe.
for (const command of ['python3', 'python']) {
const candidate = findOnPath(command)
if (candidate) return candidate
}
return null
}
// Windows: PATH-based detection has TWO landmines we have to dodge.
//
// (1) The Microsoft Store "Python stub" lives at
// %LOCALAPPDATA%\Microsoft\WindowsApps\python.exe and is on PATH
// by default on modern Windows. It's a redirector that opens the
// Store window if no Store Python is installed. Running it for
// `-m venv` would either succeed (real Store install — fine) or
// pop the Store dialog (bad UX during boot).
// (2) `py.exe` (Python launcher) is missing from per-user installs
// that didn't check the launcher option, so PATH-only checks
// miss real Python 3.13 installs (user-reported case).
//
// We also restrict ourselves to Python 3.113.13. 3.14 is the latest
// CPython but several Hermes deps (notably pywinpty's Rust-built
// windows_x86_64_msvc crate) don't yet publish 3.14 wheels, and
// `pip install -e .` falls back to source-build, which fails without
// a Rust toolchain. install.ps1 sidesteps this by pinning to 3.11
// via uv; until we add the same uv-managed Python pathway here, the
// simplest fix is to refuse 3.14 detection and let the NSIS prereq
// page offer to install 3.11 alongside.
//
// Strategy: probe in three passes, in order from most-precise to
// least-precise, and ONLY use PATH lookup as a last resort after
// confirming the candidate isn't the WindowsApps redirector.
//
// Pass 1: PEP 514 registry — every standards-compliant Python
// installer registers itself at SOFTWARE\Python\PythonCore.
// The MS Store stub does NOT register here, so a hit means
// a real Python install. Versions are explicit so we
// inherently filter 3.14 out.
// Pass 2: Filesystem probe of standard install locations
// (Program Files, LocalAppData\Programs\Python). Same
// version filtering by directory name.
// Pass 3: PATH lookup of `py.exe` (the launcher itself never
// triggers the Store) — but call it with a version flag so
// we resolve to a SPECIFIC supported version, not whatever
// py.exe's default is (which on a 3.14-only box would be
// 3.14).
const SUPPORTED_VERSIONS = ['3.11', '3.12', '3.13']
const SUPPORTED_VERSIONS_NO_DOT = ['311', '312', '313']
// Pass 1: registry. Use `reg query` since main process doesn't have
// a reliable in-process registry API across all electron versions.
for (const hive of ['HKLM', 'HKCU']) {
for (const version of SUPPORTED_VERSIONS) {
try {
const out = execFileSync(
'reg',
['query', `${hive}\\SOFTWARE\\Python\\PythonCore\\${version}\\InstallPath`, '/ve', '/reg:64'],
{ encoding: 'utf8', stdio: ['ignore', 'pipe', 'ignore'] }
)
// Output format: " (Default) REG_SZ C:\Path\To\Python\"
const match = out.match(/REG_SZ\s+(.+?)\s*$/m)
if (match) {
const installPath = match[1].trim()
const pythonExe = path.join(installPath, 'python.exe')
if (fileExists(pythonExe)) return pythonExe
}
} catch {
// Key not present — try next.
}
}
}
// Pass 2: filesystem probe of standard locations.
const programFiles = process.env['ProgramFiles'] || 'C:\\Program Files'
const localAppData = process.env.LOCALAPPDATA || ''
for (const versionDir of SUPPORTED_VERSIONS_NO_DOT) {
const systemWide = path.join(programFiles, `Python${versionDir}`, 'python.exe')
if (fileExists(systemWide)) return systemWide
if (localAppData) {
const perUser = path.join(localAppData, 'Programs', 'Python', `Python${versionDir}`, 'python.exe')
if (fileExists(perUser)) return perUser
}
}
// Pass 3: py.exe with explicit version flag. The launcher itself is
// safe to invoke (no Store popup) and `py -3.13 -c "import sys;
// print(sys.executable)"` resolves to the actual python.exe path of
// the requested version. We try in version-priority order so the
// first hit wins.
const pyExe = findOnPath('py.exe')
if (pyExe) {
for (const version of SUPPORTED_VERSIONS) {
try {
const out = execFileSync(pyExe, [`-${version}`, '-c', 'import sys; print(sys.executable)'], {
encoding: 'utf8',
stdio: ['ignore', 'pipe', 'ignore']
})
const candidate = out.trim()
if (candidate && fileExists(candidate)) return candidate
} catch {
// py couldn't find that version — try next.
}
}
}
// We deliberately do NOT fall back to plain `python.exe` on PATH.
// Without a way to verify the version safely (running `python -V`
// risks the Microsoft Store popup), accepting whatever's there
// could land us on 3.14 and trigger the Rust-build-from-source
// failure. Better to return null and let the NSIS prereq page
// offer to install a known-good 3.11 via winget.
return null
}
// findGitBash — locate bash.exe on Windows. Hermes' terminal tool requires
// bash (POSIX shell), and on Windows that's almost always Git for Windows'
// bundled Git Bash. We check the same set of locations tools/environments/
// local.py:_find_bash() checks at runtime, so a positive result here means
// the agent will be able to start a terminal too.
//
// On non-Windows hosts bash is part of the OS and this just returns the
// first bash on PATH.
function findGitBash() {
if (!IS_WINDOWS) {
return findOnPath('bash')
}
// install.ps1 drops PortableGit at %LOCALAPPDATA%\hermes\git\... — checked
// first so users who installed via install.ps1 are detected before we
// start probing system-wide locations.
const localAppData = process.env.LOCALAPPDATA || ''
const candidates = []
if (localAppData) {
candidates.push(path.join(localAppData, 'hermes', 'git', 'bin', 'bash.exe'))
candidates.push(path.join(localAppData, 'hermes', 'git', 'usr', 'bin', 'bash.exe'))
}
// Standard Git for Windows install locations.
candidates.push(path.join(process.env['ProgramFiles'] || 'C:\\Program Files', 'Git', 'bin', 'bash.exe'))
candidates.push(path.join(process.env['ProgramFiles(x86)'] || 'C:\\Program Files (x86)', 'Git', 'bin', 'bash.exe'))
if (localAppData) {
candidates.push(path.join(localAppData, 'Programs', 'Git', 'bin', 'bash.exe'))
}
for (const candidate of candidates) {
if (fileExists(candidate)) return candidate
}
// Last resort — bash on PATH (covers WSL bash, MSYS2, custom installs).
// On WSL hosts findOnPath itself filters out Windows-binary paths via
// isWindowsBinaryPathInWsl, so we won't hand back a wsl.exe shim either.
return findOnPath('bash')
}
function getVenvPython(venvRoot) {
return path.join(venvRoot, IS_WINDOWS ? path.join('Scripts', 'python.exe') : path.join('bin', 'python'))
}
// resolveGitBinary — locate git.exe on Windows. A fresh installer-driven
// install only has PortableGit under %LOCALAPPDATA%\hermes\git (never on
// PATH), so a bare spawn('git') ENOENTs and self-update checks fail with
// "Couldn't check for updates". Mirror findGitBash: PortableGit first, then
// standard Git-for-Windows locations, then PATH. Cached after first probe.
let _gitBinaryCache = null
function resolveGitBinary() {
if (_gitBinaryCache) return _gitBinaryCache
if (!IS_WINDOWS) {
_gitBinaryCache = findOnPath('git') || 'git'
return _gitBinaryCache
}
const localAppData = process.env.LOCALAPPDATA || ''
const candidates = []
if (localAppData) {
candidates.push(path.join(localAppData, 'hermes', 'git', 'cmd', 'git.exe'))
candidates.push(path.join(localAppData, 'hermes', 'git', 'bin', 'git.exe'))
}
candidates.push(path.join(process.env['ProgramFiles'] || 'C:\\Program Files', 'Git', 'cmd', 'git.exe'))
candidates.push(path.join(process.env['ProgramFiles(x86)'] || 'C:\\Program Files (x86)', 'Git', 'cmd', 'git.exe'))
if (localAppData) {
candidates.push(path.join(localAppData, 'Programs', 'Git', 'cmd', 'git.exe'))
}
_gitBinaryCache = candidates.find(fileExists) || findOnPath('git') || 'git'
return _gitBinaryCache
}
function recentHermesLog() {
return hermesLog.slice(-20).join('\n')
}
// ─── Self-update (git-pull against the running backend's hermes root) ──────
function readDesktopUpdateConfig() {
try {
const parsed = JSON.parse(fs.readFileSync(DESKTOP_UPDATE_CONFIG_PATH, 'utf8'))
const branch = typeof parsed?.branch === 'string' ? parsed.branch.trim() : ''
return { branch: branch || DEFAULT_UPDATE_BRANCH }
} catch {
return { branch: DEFAULT_UPDATE_BRANCH }
}
}
// Atomic file write: temp + rename (atomic on all platforms). Prevents
// partial writes on crash/power loss that corrupt JSON config files.
function writeFileAtomic(targetPath, data, encoding) {
const tmp = targetPath + '.tmp'
fs.writeFileSync(tmp, data, encoding)
fs.renameSync(tmp, targetPath)
}
function writeDesktopUpdateConfig(config) {
fs.mkdirSync(path.dirname(DESKTOP_UPDATE_CONFIG_PATH), { recursive: true })
writeFileAtomic(DESKTOP_UPDATE_CONFIG_PATH, JSON.stringify(config, null, 2))
}
// Match the backend's source resolution but bias toward a real git checkout.
// Dev → SOURCE_REPO_ROOT. Packaged/CLI install → ACTIVE_HERMES_ROOT.
// HERMES_DESKTOP_HERMES_ROOT always wins so devs can pin a worktree.
function resolveUpdateRoot() {
const candidates = [
process.env.HERMES_DESKTOP_HERMES_ROOT && path.resolve(process.env.HERMES_DESKTOP_HERMES_ROOT),
!IS_PACKAGED && isHermesSourceRoot(SOURCE_REPO_ROOT) ? SOURCE_REPO_ROOT : null,
isHermesSourceRoot(ACTIVE_HERMES_ROOT) ? ACTIVE_HERMES_ROOT : null
].filter(Boolean)
return candidates.find(c => directoryExists(path.join(c, '.git'))) || candidates[0] || ACTIVE_HERMES_ROOT
}
function runGit(args, options = {}) {
return new Promise((resolve, reject) => {
const child = spawn(resolveGitBinary(), IS_WINDOWS ? ['-c', 'windows.appendAtomically=false', ...args] : args, {
cwd: options.cwd,
env: { ...process.env, ...(options.env || {}), GIT_TERMINAL_PROMPT: '0' },
stdio: ['ignore', 'pipe', 'pipe']
})
let stdout = ''
let stderr = ''
child.stdout.on('data', chunk => {
const text = chunk.toString()
stdout += text
options.onLine?.('stdout', text)
})
child.stderr.on('data', chunk => {
const text = chunk.toString()
stderr += text
options.onLine?.('stderr', text)
})
child.once('error', reject)
child.once('exit', code => resolve({ code, stdout, stderr }))
})
}
const firstLine = text => (text || '').split('\n').find(Boolean) || ''
function emitUpdateProgress(payload) {
const merged = { stage: 'idle', message: '', percent: null, error: null, ...payload, at: Date.now() }
rememberLog(`[updates] ${merged.stage}: ${merged.message || merged.error || ''}`)
for (const window of BrowserWindow.getAllWindows()) {
window.webContents.send('hermes:updates:progress', merged)
}
}
// Self-heal the tracked update branch: if origin no longer publishes it (e.g.
// bb/gui was merged into main and deleted), fall back to main and persist so
// every later check/apply follows main — no manual flip, even for already-
// installed clients. Read-only ls-remote probe; only flips on a definitive
// "ref absent" (exit 2), never on a transient network error, so a flaky
// connection can't strand a user on the wrong branch.
async function resolveHealedBranch(updateRoot, branch) {
if (!branch || branch === 'main') {
return branch || 'main'
}
const probe = await runGit(['ls-remote', '--exit-code', '--heads', 'origin', branch], { cwd: updateRoot })
if (probe.code !== 2) {
return branch
}
rememberLog(`[updates] origin/${branch} is gone (merged?); falling back to main`)
const config = readDesktopUpdateConfig()
if (config.branch !== 'main') {
writeDesktopUpdateConfig({ ...config, branch: 'main' })
}
return 'main'
}
async function checkUpdates() {
const updateRoot = resolveUpdateRoot()
let { branch } = readDesktopUpdateConfig()
const gitDir = path.join(updateRoot, '.git')
if (!directoryExists(gitDir)) {
return {
supported: false,
reason: 'not-a-git-checkout',
message: `${updateRoot} isn't a git checkout — desktop self-update only runs against a source install.`,
hermesRoot: updateRoot,
branch
}
}
branch = await resolveHealedBranch(updateRoot, branch)
const fetched = await runGit(['fetch', '--quiet', 'origin', branch], { cwd: updateRoot })
if (fetched.code !== 0) {
return {
supported: true,
branch,
error: 'fetch-failed',
message: firstLine(fetched.stderr) || 'git fetch failed.',
hermesRoot: updateRoot,
fetchedAt: Date.now()
}
}
const git = args => runGit(args, { cwd: updateRoot }).then(r => r.stdout.trim())
const [currentSha, targetSha, countStr, dirtyStr, currentBranch] = await Promise.all([
git(['rev-parse', 'HEAD']),
git(['rev-parse', `origin/${branch}`]),
git(['rev-list', `HEAD..origin/${branch}`, '--count']),
git(['status', '--porcelain']),
git(['rev-parse', '--abbrev-ref', 'HEAD'])
])
const behind = Number.parseInt(countStr, 10) || 0
const commits = behind > 0 ? await readCommitLog(updateRoot, branch) : []
return {
supported: true,
branch,
currentBranch,
behind,
currentSha,
targetSha,
commits,
dirty: dirtyStr.length > 0,
hermesRoot: updateRoot,
fetchedAt: Date.now()
}
}
async function readCommitLog(cwd, branch) {
const SEP = '\x1f'
const REC = '\x1e'
const { stdout } = await runGit(
['log', `HEAD..origin/${branch}`, `--pretty=format:%H${SEP}%s${SEP}%an${SEP}%at${REC}`, '-n', '40'],
{ cwd }
)
return stdout
.split(REC)
.map(line => line.trim())
.filter(Boolean)
.map(line => {
const [sha, summary, author, at] = line.split(SEP)
return { sha, summary, author, at: Number.parseInt(at, 10) * 1000 }
})
}
let updateInFlight = false
// Resolve the staged updater binary. The Tauri installer copies itself to
// HERMES_HOME/hermes-setup.exe on a successful install (see
// apps/bootstrap-installer paths::copy_self_to_hermes_home). That binary owns
// ALL repo mutation — running `hermes update` + rebuilding the desktop — so
// the desktop never touches its own bits while running. Returns null when the
// updater isn't staged (e.g. a dev/source run that never went through the
// installer); callers degrade gracefully.
function resolveUpdaterBinary() {
const name = IS_WINDOWS ? 'hermes-setup.exe' : 'hermes-setup'
const candidate = path.join(HERMES_HOME, name)
return fileExists(candidate) ? candidate : null
}
// applyUpdates — hand off to the installer's --update flow, then exit.
//
// The desktop is a pure consumer: it does NOT git pull / pip install / rebuild
// itself (the old open-coded git dance lived here and drifted from
// `hermes update`). Instead we spawn the staged Hermes-Setup binary with
// --update and quit, so it can run `hermes update` (which refuses while we
// hold the venv shim) and rebuild the desktop with our exe already gone.
//
// Detection (checkUpdates / commit changelog / "N behind") stays in the UI;
// only this apply action changed.
async function applyUpdates(opts = {}) {
if (updateInFlight) {
throw new Error('An update is already in progress.')
}
updateInFlight = true
try {
const updater = resolveUpdaterBinary()
if (!updater && !IS_WINDOWS) {
// macOS/Linux drag-install: no staged Tauri hermes-setup. Unlike Windows
// (where a venv-shim file lock forces the quit→hand-off→rebuild dance),
// there's no mandatory file locking here, so the desktop can drive the
// whole update itself: `hermes update` (backend) + `hermes desktop
// --build-only` (OS-aware GUI rebuild), then swap the running .app bundle
// with the freshly built one and relaunch.
return await applyUpdatesPosixInApp(opts)
}
if (!updater) {
// No staged updater binary — this is a CLI-installed user (they ran
// `hermes desktop`, never the Tauri installer that self-copies
// hermes-setup.exe into HERMES_HOME). They DO have a working `hermes`
// on PATH / in the venv, so the correct path is the one-liner in their
// native medium. We show the EXACT command, branch-pinned to the
// checkout they're on — bare `hermes update` defaults to main and would
// silently switch a bb/gui (or any non-main) install off-branch. Mirror
// the GUI button's contract: append --branch <current> for non-main
// checkouts, keep it bare for main so the card stays clean.
const updateRoot = resolveUpdateRoot()
let command = 'hermes update'
try {
const head = await runGit(['rev-parse', '--abbrev-ref', 'HEAD'], { cwd: updateRoot })
const current = (head.stdout || '').trim()
if (head.code === 0 && current && current !== 'HEAD') {
const branch = await resolveHealedBranch(updateRoot, current)
if (branch !== 'main') command = `hermes update --branch ${branch}`
}
} catch {
// Best-effort: fall back to bare `hermes update` if branch detection fails.
}
rememberLog(`[updates] no staged updater; surfacing manual \`${command}\` for CLI install at ${updateRoot}`)
emitUpdateProgress({ stage: 'manual', message: command, percent: null })
return { ok: true, manual: true, command, hermesRoot: updateRoot }
}
emitUpdateProgress({ stage: 'restart', message: 'Handing off to the Hermes updater…', percent: 100 })
const updateRoot = resolveUpdateRoot()
const { branch: configuredBranch } = readDesktopUpdateConfig()
const branch = await resolveHealedBranch(updateRoot, configuredBranch || DEFAULT_UPDATE_BRANCH)
const updaterArgs = ['--update', '--branch', branch]
const targetApp = IS_MAC ? runningAppBundle() : null
if (targetApp) {
updaterArgs.push('--target-app', targetApp)
}
const venvBin = path.join(updateRoot, 'venv', IS_WINDOWS ? 'Scripts' : 'bin')
// Detached so the updater outlives this process — it needs us GONE before
// `hermes update` will run (the venv shim is locked while we live).
const child = spawn(updater, updaterArgs, {
cwd: HERMES_HOME,
env: {
...process.env,
HERMES_HOME,
PATH: [path.join(HERMES_HOME, 'node', 'bin'), venvBin, process.env.PATH].filter(Boolean).join(path.delimiter)
},
detached: true,
stdio: 'ignore',
windowsHide: false
})
child.unref()
rememberLog(`[updates] launched updater: ${updater} ${updaterArgs.join(' ')}; exiting desktop to release venv shim`)
// Give the OS a beat to register the new process, then quit. The updater
// rebuilds and relaunches us when it's done.
setTimeout(() => {
app.quit()
}, 600)
return { ok: true, handedOff: true, updater }
} finally {
updateInFlight = false
}
}
// Resolve the hermes CLI to drive an in-app update: prefer the venv shim in
// the install we're updating, fall back to `hermes` on PATH.
function resolveHermesCliBinary(updateRoot) {
const venvHermes = path.join(updateRoot, 'venv', 'bin', 'hermes')
if (fileExists(venvHermes)) return venvHermes
return findOnPath('hermes') || null
}
// Spawn a command and stream each output line to the update progress channel.
function runStreamedUpdate(command, args, { cwd, env, stage } = {}) {
return new Promise(resolve => {
let child
try {
child = spawn(command, args, {
cwd,
env: { ...process.env, ...(env || {}) },
stdio: ['ignore', 'pipe', 'pipe']
})
} catch (err) {
resolve({ code: 1, error: err.message })
return
}
const emitLines = chunk => {
for (const line of chunk.toString().split('\n')) {
const trimmed = line.trim()
if (trimmed) emitUpdateProgress({ stage, message: trimmed, percent: null })
}
}
child.stdout.on('data', emitLines)
child.stderr.on('data', emitLines)
child.once('error', err => resolve({ code: 1, error: err.message }))
child.once('exit', code => resolve({ code }))
})
}
// The running app's .app bundle (packaged macOS): execPath is
// <App>.app/Contents/MacOS/<exe>; climb three levels to the bundle root.
function runningAppBundle() {
if (!IS_MAC) return null
let dir = path.dirname(app.getPath('exe')) // .../Contents/MacOS
for (let i = 0; i < 2; i++) dir = path.dirname(dir) // -> .../X.app
return dir.endsWith('.app') ? dir : null
}
function shellQuote(value) {
return `'${String(value).replace(/'/g, `'\\''`)}'`
}
// macOS/Linux in-app update: backend (`hermes update`) + OS-aware GUI rebuild
// (`hermes desktop --build-only`), then atomically swap the running .app bundle
// with the freshly built one and relaunch. Degrades to "backend updated,
// restart to load the new GUI" if the swap can't be performed.
async function applyUpdatesPosixInApp() {
const updateRoot = resolveUpdateRoot()
const hermes = resolveHermesCliBinary(updateRoot)
if (!hermes) {
emitUpdateProgress({ stage: 'manual', message: 'hermes update', percent: null })
return { ok: true, manual: true, command: 'hermes update', hermesRoot: updateRoot }
}
// Put the Hermes-managed Node and the venv on PATH so `hermes desktop`'s
// npm build can find them on a machine with no system Node.
const extraPath = [path.join(HERMES_HOME, 'node', 'bin'), path.join(updateRoot, 'venv', 'bin')]
.filter(Boolean)
.join(path.delimiter)
const env = {
HERMES_HOME,
PATH: [extraPath, process.env.PATH].filter(Boolean).join(path.delimiter)
}
// `hermes update` reaps stale `hermes dashboard` backends (a code update
// leaves the running process serving old Python against the freshly-updated
// JS bundle). But OUR backend is one of those processes, and killing it
// mid-update produces the boot→kill→crash loop in #37532 — the desktop
// already restarts its own backend via the rebuild+relaunch below, so the
// reap must spare it. Hand the live backend's PID to the update process;
// _kill_stale_dashboard_processes reads HERMES_DESKTOP_CHILD_PID and excludes
// it while still reaping any genuinely-orphaned dashboards. (#37532)
// Exclude every desktop-managed backend (primary + all pool profiles) from
// the update reaper. _kill_stale_dashboard_processes accepts a comma-separated
// list (a single int still parses for back-compat).
const desktopChildPids = []
if (hermesProcess && Number.isInteger(hermesProcess.pid)) {
desktopChildPids.push(hermesProcess.pid)
}
for (const entry of backendPool.values()) {
if (entry.process && Number.isInteger(entry.process.pid)) {
desktopChildPids.push(entry.process.pid)
}
}
if (desktopChildPids.length) {
env.HERMES_DESKTOP_CHILD_PID = desktopChildPids.join(',')
}
// Branch-pin so a non-main checkout doesn't get switched to main (and self-heal
// to main when the pinned branch no longer exists on origin).
let branchArgs = []
try {
const head = await runGit(['rev-parse', '--abbrev-ref', 'HEAD'], { cwd: updateRoot })
const current = (head.stdout || '').trim()
if (head.code === 0 && current && current !== 'HEAD') {
branchArgs = ['--branch', await resolveHealedBranch(updateRoot, current)]
}
} catch {
// best effort
}
emitUpdateProgress({ stage: 'update', message: 'Updating Hermes (git + dependencies)…', percent: 10 })
const updated = await runStreamedUpdate(hermes, ['update', '--yes', ...branchArgs], {
cwd: updateRoot,
env,
stage: 'update'
})
if (updated.code !== 0) {
emitUpdateProgress({ stage: 'error', message: 'hermes update failed.', error: updated.error || 'update-failed' })
return { ok: false, error: 'hermes update failed' }
}
emitUpdateProgress({ stage: 'rebuild', message: 'Rebuilding the desktop app…', percent: 60 })
const rebuilt = await runStreamedUpdate(hermes, ['desktop', '--build-only'], {
cwd: updateRoot,
env,
stage: 'rebuild'
})
if (rebuilt.code !== 0) {
emitUpdateProgress({
stage: 'error',
message: 'Backend updated, but the desktop rebuild failed. Restart Hermes to retry.',
error: rebuilt.error || 'rebuild-failed'
})
return { ok: false, backendUpdated: true, error: 'desktop rebuild failed' }
}
const rebuiltApp = [
path.join(updateRoot, 'apps', 'desktop', 'release', 'mac-arm64', 'Hermes.app'),
path.join(updateRoot, 'apps', 'desktop', 'release', 'mac', 'Hermes.app')
].find(directoryExists)
const targetApp = runningAppBundle()
// No bundle to swap (dev run, Linux AppImage, or unresolved paths): the
// backend is updated; the next launch picks up the rebuilt GUI.
if (!rebuiltApp || !targetApp) {
emitUpdateProgress({
stage: 'done',
message: 'Backend updated. Restart Hermes to load the new version.',
percent: 100
})
return { ok: true, backendUpdated: true, rebuiltApp: rebuiltApp || null }
}
emitUpdateProgress({ stage: 'restart', message: 'Installing the updated app and restarting…', percent: 95 })
// Detached swapper: wait for THIS process to exit (so the bundle is free),
// ditto the rebuilt app over the running one, clear quarantine, relaunch.
const swapScript = `#!/bin/bash
set -u
APP_PID=${process.pid}
SRC=${shellQuote(rebuiltApp)}
DST=${shellQuote(targetApp)}
for _ in $(seq 1 240); do
kill -0 "$APP_PID" 2>/dev/null || break
sleep 0.5
done
if [ "$SRC" != "$DST" ]; then
if /usr/bin/ditto "$SRC" "$DST.hermes-update-new"; then
rm -rf "$DST.hermes-update-old" 2>/dev/null || true
mv "$DST" "$DST.hermes-update-old" 2>/dev/null || rm -rf "$DST"
mv "$DST.hermes-update-new" "$DST"
rm -rf "$DST.hermes-update-old" 2>/dev/null || true
fi
fi
/usr/bin/xattr -dr com.apple.quarantine "$DST" 2>/dev/null || true
/usr/bin/open "$DST"
`
const scriptPath = path.join(app.getPath('temp'), `hermes-desktop-update-${Date.now()}.sh`)
try {
fs.writeFileSync(scriptPath, swapScript, { mode: 0o755 })
} catch (err) {
emitUpdateProgress({
stage: 'done',
message: 'Backend + app updated. Restart Hermes to load the new version.',
percent: 100
})
rememberLog(`[updates] could not write swap script: ${err.message}; rebuilt app at ${rebuiltApp}`)
return { ok: true, backendUpdated: true, rebuiltApp }
}
const child = spawn('/bin/bash', [scriptPath], { detached: true, stdio: 'ignore' })
child.unref()
rememberLog(`[updates] launched mac swap+relaunch: ${scriptPath} (${rebuiltApp} -> ${targetApp})`)
setTimeout(() => app.quit(), 600)
return { ok: true, handedOff: true, rebuiltApp, targetApp }
}
function readJson(filePath) {
try {
return JSON.parse(fs.readFileSync(filePath, 'utf8'))
} catch {
return null
}
}
// Bootstrap-complete marker helpers. The marker is written ONCE by the
// first-launch bootstrap runner (Phase 1D) after install.ps1 stages succeed
// AND the user has finished initial configuration. On every subsequent boot
// we check `isBootstrapComplete()` and skip the bootstrap flow entirely if
// the marker is present and current-schema.
//
// Marker schema (version 1):
// {
// schemaVersion: 1,
// pinnedCommit: "<40-char SHA>", // what install.ps1 was driven against
// pinnedBranch: "<branch name>" | null,
// completedAt: "<ISO 8601>",
// desktopVersion: "<app.getVersion()>" // for forensics
// }
function readBootstrapMarker() {
return readJson(BOOTSTRAP_COMPLETE_MARKER)
}
function isBootstrapComplete() {
const marker = readBootstrapMarker()
if (!marker || typeof marker !== 'object') return false
if (marker.schemaVersion !== BOOTSTRAP_MARKER_SCHEMA_VERSION) return false
if (typeof marker.pinnedCommit !== 'string' || marker.pinnedCommit.length < 7) return false
// We DELIBERATELY do NOT verify that the checkout is currently at the
// pinned commit -- users update via the in-app update path or `hermes
// update`, which moves HEAD legitimately. The marker just attests "we
// ran the bootstrap successfully at least once." We DO additionally require
// a runnable venv: an interrupted or split-home install can leave the marker
// + checkout without a venv, and trusting that spawns a dead backend
// ("gateway offline") instead of re-running bootstrap to repair it.
return isHermesSourceRoot(ACTIVE_HERMES_ROOT) && fileExists(getVenvPython(VENV_ROOT))
}
function writeBootstrapMarker(payload) {
fs.mkdirSync(path.dirname(BOOTSTRAP_COMPLETE_MARKER), { recursive: true })
const merged = {
schemaVersion: BOOTSTRAP_MARKER_SCHEMA_VERSION,
pinnedCommit: payload.pinnedCommit || null,
pinnedBranch: payload.pinnedBranch || null,
completedAt: new Date().toISOString(),
desktopVersion: app.getVersion()
}
writeFileAtomic(BOOTSTRAP_COMPLETE_MARKER, JSON.stringify(merged, null, 2) + '\n', 'utf8')
return merged
}
function resolveWebDist() {
const override = process.env.HERMES_DESKTOP_WEB_DIST
if (override && directoryExists(path.resolve(override))) return path.resolve(override)
const unpackedDist = path.join(unpackedPathFor(APP_ROOT), 'dist')
if (directoryExists(unpackedDist)) return unpackedDist
return path.join(APP_ROOT, 'dist')
}
function resolveRendererIndex() {
const candidates = [path.join(APP_ROOT, 'dist', 'index.html'), path.join(resolveWebDist(), 'index.html')]
return candidates.find(fileExists) || candidates[0]
}
function resolveHermesCwd() {
// In a packaged build, `process.cwd()` resolves to the install root (e.g.
// `…/win-unpacked` on Windows or `/Applications/Hermes.app/Contents/...`
// on macOS). Sessions spawned there leave files inside the app bundle
// and bewilder users when "where did my files go?" is the install dir.
// The user-configurable default project directory wins over everything,
// followed by env hints (only honored when packaged if they point at a
// real directory), then the home dir.
const candidates = [
readDefaultProjectDir(),
process.env.HERMES_DESKTOP_CWD,
process.env.INIT_CWD,
IS_PACKAGED ? null : process.cwd(),
!IS_PACKAGED ? SOURCE_REPO_ROOT : null,
app.getPath('home')
]
for (const candidate of candidates) {
if (!candidate) continue
const resolved = path.resolve(String(candidate))
if (directoryExists(resolved)) return resolved
}
return app.getPath('home')
}
// Persisted "Default project directory" — surfaced as a setting in the
// renderer (see app/settings/sessions-settings.tsx). Stored as JSON in
// userData so it survives self-updates without bleeding into the new
// install. `null` means "no preference, fall back to the usual chain".
const DEFAULT_PROJECT_DIR_CONFIG_FILENAME = 'project-dir.json'
function defaultProjectDirConfigPath() {
return path.join(app.getPath('userData'), DEFAULT_PROJECT_DIR_CONFIG_FILENAME)
}
function readDefaultProjectDir() {
try {
const raw = fs.readFileSync(defaultProjectDirConfigPath(), 'utf8')
const parsed = JSON.parse(raw)
if (parsed && typeof parsed.dir === 'string' && parsed.dir.trim()) {
const resolved = path.resolve(parsed.dir)
if (directoryExists(resolved)) {
return resolved
}
}
} catch {
// Missing / unreadable / malformed → fall through to the rest of the
// candidate chain.
}
return null
}
function writeDefaultProjectDir(dir) {
const target = defaultProjectDirConfigPath()
const payload = dir ? JSON.stringify({ dir: path.resolve(dir) }, null, 2) : JSON.stringify({}, null, 2)
try {
fs.mkdirSync(path.dirname(target), { recursive: true })
fs.writeFileSync(target, payload, 'utf8')
} catch (error) {
rememberLog(`[settings] write default project dir failed: ${error.message}`)
}
}
function createPythonBackend(root, label, dashboardArgs, options = {}) {
const python = findPythonForRoot(root)
if (!python) return null
return {
kind: 'python',
label,
command: python,
args: ['-m', 'hermes_cli.main', ...dashboardArgs],
env: {
PYTHONPATH: [root, process.env.PYTHONPATH].filter(Boolean).join(path.delimiter)
},
root,
bootstrap: Boolean(options.bootstrap),
shell: false
}
}
// createActiveBackend — build a backend pointing at ACTIVE_HERMES_ROOT, the
// canonical install location shared with the CLI installer. The venv at
// VENV_ROOT may not exist yet on first run; bootstrap=true tells
// ensureRuntime() to create / refresh it before launch.
function createActiveBackend(dashboardArgs) {
const venvPython = getVenvPython(VENV_ROOT)
return {
kind: 'python',
label: `Hermes at ${ACTIVE_HERMES_ROOT}`,
command: fileExists(venvPython) ? venvPython : findSystemPython(),
args: ['-m', 'hermes_cli.main', ...dashboardArgs],
env: {
PYTHONPATH: [ACTIVE_HERMES_ROOT, process.env.PYTHONPATH].filter(Boolean).join(path.delimiter)
},
root: ACTIVE_HERMES_ROOT,
bootstrap: true,
shell: false
}
}
function resolveHermesBackend(dashboardArgs) {
// 1. Explicit override -- HERMES_DESKTOP_HERMES_ROOT points at a developer
// checkout. Honour it as-is (no bootstrap; the user is driving).
const overrideRoot = process.env.HERMES_DESKTOP_HERMES_ROOT && path.resolve(process.env.HERMES_DESKTOP_HERMES_ROOT)
if (overrideRoot && isHermesSourceRoot(overrideRoot)) {
const backend = createPythonBackend(overrideRoot, `Hermes source at ${overrideRoot}`, dashboardArgs)
if (backend) return backend
}
// 2. Development source -- when running `npm run dev` from a checkout, the
// cloned repo at SOURCE_REPO_ROOT takes precedence over ACTIVE and any
// installed `hermes` on PATH so local Python edits are actually exercised.
// (In dev with no checkout, SOURCE_REPO_ROOT won't pass isHermesSourceRoot.)
if (!IS_PACKAGED && isHermesSourceRoot(SOURCE_REPO_ROOT)) {
const backend = createPythonBackend(SOURCE_REPO_ROOT, `Hermes source at ${SOURCE_REPO_ROOT}`, dashboardArgs)
if (backend) return backend
}
// 3. Bootstrap-complete ACTIVE_HERMES_ROOT -- the canonical install at
// %LOCALAPPDATA%\hermes\hermes-agent (Windows) or ~/.hermes/hermes-agent.
// The bootstrap marker means install.ps1 stages finished and the user
// completed initial configuration; we trust the install and go straight
// to spawning hermes. Updates flow through the in-app update path
// (applyUpdates -> git pull) or `hermes update` from the CLI.
if (isBootstrapComplete()) {
return createActiveBackend(dashboardArgs)
}
// 4. Existing `hermes` on PATH -- installed via install.ps1 / install.sh from
// a previous tool-only setup, or pip-installed system-wide. Use it but
// do NOT write a bootstrap marker; the user did this themselves and we
// don't want to take ownership of an install we didn't perform.
// HERMES_DESKTOP_IGNORE_EXISTING=1 forces the bootstrap path for testing.
if (process.env.HERMES_DESKTOP_IGNORE_EXISTING !== '1') {
let hermesCommand = null
const hermesOverride = process.env.HERMES_DESKTOP_HERMES
if (hermesOverride) {
const resolvedOverride = findOnPath(hermesOverride)
if (resolvedOverride) {
hermesCommand = resolvedOverride
} else if (!isWindowsBinaryPathInWsl(hermesOverride, { isWsl: IS_WSL })) {
hermesCommand = hermesOverride
} else {
rememberLog(`Ignoring Windows Hermes override under WSL: ${hermesOverride}`)
}
} else {
hermesCommand = findOnPath('hermes')
}
if (hermesCommand) {
if (looksLikeDesktopAppBinary(hermesCommand)) {
rememberLog(`Ignoring desktop app executable on PATH while resolving Hermes CLI: ${hermesCommand}`)
hermesCommand = null
}
}
if (hermesCommand) {
// Smoke-test the candidate before trusting it. A `hermes` shim
// left behind by a half-uninstalled pip install (or a venv
// entry-point pointing at a deleted interpreter) still resolves
// via findOnPath but explodes on spawn -- the user then sees a
// dead backend instead of the first-launch installer. The cheap
// `--version` probe (see backend-probes.cjs) catches that case
// and lets the resolver fall through to step 6 / bootstrap.
const shellForProbe = isCommandScript(hermesCommand)
if (verifyHermesCli(hermesCommand, { shell: shellForProbe })) {
return {
label: `existing Hermes CLI at ${hermesCommand}`,
command: hermesCommand,
args: dashboardArgs,
bootstrap: false,
env: {},
kind: 'command',
shell: shellForProbe
}
}
rememberLog(
`Ignoring existing Hermes CLI at ${hermesCommand}: --version probe failed; falling through to bootstrap.`
)
}
}
// 5. Last-ditch: pip-installed hermes_cli module via system Python.
// Same rationale as #4 -- the user installed this; we use it but don't
// take ownership.
const python = findSystemPython()
if (python) {
// Same smoke-test rationale as step 4: a system Python in the
// SUPPORTED_VERSIONS range can be registered (PEP 514) without
// having hermes_cli installed -- common on dev boxes that have
// a python.org install from prior unrelated work. Returning that
// backend hands the spawn step a guaranteed ModuleNotFoundError.
// Verify the import works before trusting the candidate; on
// failure, fall through to step 6 so the bootstrap runner pulls
// a uv-managed 3.11 into %LOCALAPPDATA%\hermes\hermes-agent\venv.
if (canImportHermesCli(python)) {
return {
kind: 'python',
label: `installed hermes_cli module via ${python}`,
command: python,
args: ['-m', 'hermes_cli.main', ...dashboardArgs],
bootstrap: false,
env: {},
shell: false
}
}
rememberLog(`Ignoring system Python ${python}: hermes_cli is not importable; falling through to bootstrap.`)
}
// 6. Nothing usable yet -- signal the bootstrap runner that we need to
// clone+install. Phase 1D's bootstrap-runner consumes this sentinel
// and drives install.ps1 stages with a progress UI. Until 1D lands,
// callers see the sentinel and surface it as a user-facing error
// explaining what's missing.
//
// We deliberately do NOT throw here -- throwing inside
// resolveHermesBackend was the old "no payload" path and forced the
// user into a dead end. With the bootstrap protocol, "no install yet"
// is a recoverable state the GUI can drive through.
return {
kind: 'bootstrap-needed',
label: 'Hermes Agent not installed yet; bootstrap required',
command: null,
args: dashboardArgs,
bootstrap: true,
env: {},
shell: false,
// Hints for the bootstrap runner / UI layer:
activeRoot: ACTIVE_HERMES_ROOT,
installStamp: INSTALL_STAMP, // may be null in dev
isPackaged: IS_PACKAGED,
platform: process.platform
}
}
async function ensureRuntime(backend) {
if (!backend.bootstrap) {
await advanceBootProgress('runtime.external', `Using ${backend.label}`, 32)
return backend
}
// backend.kind === 'bootstrap-needed' means resolveHermesBackend couldn't
// find anything to spawn. Hand off to the bootstrap runner which drives the
// platform installer, writes the bootstrap-complete marker on success, then
// we re-resolve to get the now-installed backend.
//
// Phase 1D status: bootstrap runs but events go to desktop.log only
// (renderer window isn't created until later in startBackend). Phase 1E
// will rewire startup to spawn the window first and route bootstrap events
// to a renderer-side install overlay.
if (backend.kind === 'bootstrap-needed') {
rememberLog('[bootstrap] no Hermes install found; starting first-launch bootstrap')
// Eagerly flip the bootstrap UI state to 'active' so the renderer
// shows the install overlay BEFORE the runner finishes fetching the
// manifest (which on slow networks can take tens of seconds and would
// otherwise leave the user staring at the generic 'Preparing' splash).
// We emit a synthetic manifest with an empty stages list -- the real
// manifest event will overwrite it once install.ps1 -Manifest returns.
try {
broadcastBootstrapEvent({
type: 'manifest',
stages: [],
protocolVersion: null
})
} catch {
void 0
}
bootstrapAbortController = new AbortController()
const bootstrapResult = await runBootstrap({
installStamp: backend.installStamp,
activeRoot: backend.activeRoot,
sourceRepoRoot: SOURCE_REPO_ROOT,
hermesHome: HERMES_HOME,
logRoot: path.join(HERMES_HOME, 'logs'),
abortSignal: bootstrapAbortController.signal,
onEvent: ev => {
// Tee every bootstrap event to (a) the desktop log for forensics
// and (b) the renderer for live progress UI. Either may be absent;
// tolerate both gracefully so a renderer crash doesn't stall the
// bootstrap and a log-write failure doesn't suppress the UI signal.
try {
rememberLog(`[bootstrap] ${JSON.stringify(ev)}`)
} catch {
void 0
}
try {
broadcastBootstrapEvent(ev)
} catch {
void 0
}
},
writeMarker: writeBootstrapMarker
})
bootstrapAbortController = null
if (bootstrapResult.cancelled) {
const cancelledError = new Error('Hermes install was cancelled.')
cancelledError.isBootstrapFailure = true
cancelledError.bootstrapCancelled = true
bootstrapFailure = cancelledError
throw cancelledError
}
if (!bootstrapResult.ok) {
const bootstrapError = new Error(
`Hermes bootstrap failed${bootstrapResult.failedStage ? ` at stage '${bootstrapResult.failedStage}'` : ''}: ` +
`${bootstrapResult.error || 'unknown error'}. ` +
`Check ${path.join(HERMES_HOME, 'logs', 'desktop.log')} for the full transcript.`
)
bootstrapError.isBootstrapFailure = true
bootstrapError.failedStage = bootstrapResult.failedStage || null
// Latch the failure so subsequent startHermes() calls return this
// same error without re-running install.ps1. Cleared by the
// hermes:bootstrap:reset IPC (renderer's "Reload and retry").
bootstrapFailure = bootstrapError
throw bootstrapError
}
rememberLog('[bootstrap] bootstrap complete; marker written. Re-resolving backend.')
// Re-resolve now that the install exists. The new resolution lands in
// step 3 (bootstrap-complete marker) and we recurse to wire venvPython.
return ensureRuntime(resolveHermesBackend(backend.args))
}
// bootstrap=true with a real backend (createActiveBackend path) means we
// have a checkout and need to ensure the venv-derived Python command is
// wired into the backend before launch. Same code path the old factory
// sync flow exited through, minus all the factory/pip/marker machinery
// (install.ps1 owns those concerns now and the bootstrap-complete marker
// attests they ran successfully).
if (!isHermesSourceRoot(ACTIVE_HERMES_ROOT)) {
throw new Error(
`Hermes install at ${ACTIVE_HERMES_ROOT} is missing or incomplete. ` +
'Reinstall via the desktop installer or scripts/install.ps1.'
)
}
// On Windows, preflight Git Bash. Hermes' terminal tool calls bash.exe
// directly (tools/environments/local.py); without it the agent can't run
// terminal commands. install.ps1's Stage-Git puts PortableGit at
// %LOCALAPPDATA%\hermes\git\, which findGitBash() picks up, so for any
// user who completed the bootstrap this is a no-op. For users who got
// here via an external `hermes` on PATH, this check still helps.
if (IS_WINDOWS && !findGitBash()) {
throw new Error(
'Git for Windows is required for Hermes on Windows (provides Git Bash, ' +
"which the agent's terminal tool uses). Install it from " +
'https://git-scm.com/download/win or run `winget install -e --id Git.Git`, ' +
'then relaunch Hermes.'
)
}
const venvPython = getVenvPython(VENV_ROOT)
if (!fileExists(venvPython)) {
// No venv at the expected location AND no bootstrap-needed sentinel
// means we have a half-installed checkout: .git exists, source files
// exist, but venv is missing or broken. This shouldn't happen in
// normal flow because isBootstrapComplete() requires
// isHermesSourceRoot() and the bootstrap writes the marker only after
// install.ps1 succeeds. If we hit this, the user (or a deleted venv)
// broke the invariant; tell them to re-run the install.
throw new Error(
`Hermes venv missing at ${VENV_ROOT}. Re-run the desktop installer or ` + '`scripts/install.ps1` to rebuild it.'
)
}
backend.command = venvPython
backend.label = `Hermes at ${ACTIVE_HERMES_ROOT} (venv: ${VENV_ROOT})`
updateBootProgress({
phase: 'runtime.ready',
message: 'Hermes runtime is ready',
progress: 82,
running: true,
error: null
})
return backend
}
function isPortAvailable(port) {
return new Promise(resolve => {
const server = net.createServer()
server.once('error', () => resolve(false))
server.once('listening', () => {
server.close(() => resolve(true))
})
server.listen(port, '127.0.0.1')
})
}
async function pickPort() {
for (let port = PORT_FLOOR; port <= PORT_CEILING; port += 1) {
if (await isPortAvailable(port)) return port
}
throw new Error(`No free localhost port in ${PORT_FLOOR}-${PORT_CEILING}`)
}
function fetchJson(url, token, options = {}) {
return new Promise((resolve, reject) => {
const body = options.body === undefined ? undefined : Buffer.from(JSON.stringify(options.body))
const parsed = new URL(url)
const client = parsed.protocol === 'https:' ? https : http
const timeoutMs = resolveTimeoutMs(options.timeoutMs, DEFAULT_FETCH_TIMEOUT_MS)
if (parsed.protocol !== 'http:' && parsed.protocol !== 'https:') {
reject(new Error(`Unsupported Hermes backend URL protocol: ${parsed.protocol}`))
return
}
const req = client.request(
parsed,
{
method: options.method || 'GET',
headers: {
'Content-Type': 'application/json',
'X-Hermes-Session-Token': token,
...(body ? { 'Content-Length': String(body.length) } : {})
}
},
res => {
const chunks = []
res.on('error', reject)
res.on('data', chunk => chunks.push(chunk))
res.on('end', () => {
const text = Buffer.concat(chunks).toString('utf8')
if ((res.statusCode || 500) >= 400) {
reject(new Error(`${res.statusCode}: ${text || res.statusMessage}`))
return
}
if (!text) {
resolve(null)
return
}
// A 2xx response whose body is HTML means the request fell through
// to the SPA index.html (e.g. an unregistered /api path). JSON.parse
// would throw an opaque `Unexpected token '<'` here, so surface a
// clear diagnostic with the offending URL instead.
const looksHtml = /^\s*<(?:!doctype|html)/i.test(text)
const contentType = String(res.headers['content-type'] || '')
if (looksHtml || contentType.includes('text/html')) {
reject(
new Error(
`Expected JSON from ${url} but got HTML (status ${res.statusCode}). ` +
'The endpoint is likely missing on the Hermes backend.'
)
)
return
}
try {
resolve(JSON.parse(text))
} catch {
reject(new Error(`Invalid JSON from ${url} (status ${res.statusCode}): ${text.slice(0, 200)}`))
}
})
}
)
req.on('error', reject)
req.setTimeout(timeoutMs, () => {
req.destroy(new Error(`Timed out connecting to Hermes backend after ${timeoutMs}ms`))
})
if (body) req.write(body)
req.end()
})
}
function fetchPublicJson(url, options = {}) {
// Credential-free JSON GET/POST for public gateway endpoints
// (``/api/status``, ``/api/auth/providers``). Unlike ``fetchJson`` it sends
// NO ``X-Hermes-Session-Token`` header — used by the auth-mode probe before
// any credentials exist, and any time we must not leak a token to an
// endpoint that doesn't need one.
return new Promise((resolve, reject) => {
const body = options.body === undefined ? undefined : Buffer.from(JSON.stringify(options.body))
let parsed
try {
parsed = new URL(url)
} catch (error) {
reject(new Error(`Invalid URL: ${error.message}`))
return
}
const client = parsed.protocol === 'https:' ? https : http
const timeoutMs = resolveTimeoutMs(options.timeoutMs, DEFAULT_FETCH_TIMEOUT_MS)
if (parsed.protocol !== 'http:' && parsed.protocol !== 'https:') {
reject(new Error(`Unsupported Hermes backend URL protocol: ${parsed.protocol}`))
return
}
const req = client.request(
parsed,
{
method: options.method || 'GET',
headers: {
'Content-Type': 'application/json',
...(body ? { 'Content-Length': String(body.length) } : {})
}
},
res => {
const chunks = []
res.on('data', chunk => chunks.push(chunk))
res.on('end', () => {
const text = Buffer.concat(chunks).toString('utf8')
if ((res.statusCode || 500) >= 400) {
reject(new Error(`${res.statusCode}: ${text || res.statusMessage}`))
return
}
if (!text) {
resolve(null)
return
}
const looksHtml = /^\s*<(?:!doctype|html)/i.test(text)
const contentType = String(res.headers['content-type'] || '')
if (looksHtml || contentType.includes('text/html')) {
reject(
new Error(
`Expected JSON from ${url} but got HTML (status ${res.statusCode}). ` +
'The endpoint is likely missing on the Hermes backend.'
)
)
return
}
try {
resolve(JSON.parse(text))
} catch {
reject(new Error(`Invalid JSON from ${url} (status ${res.statusCode}): ${text.slice(0, 200)}`))
}
})
}
)
req.on('error', reject)
req.setTimeout(timeoutMs, () => {
req.destroy(new Error(`Timed out connecting to Hermes backend after ${timeoutMs}ms`))
})
if (body) req.write(body)
req.end()
})
}
function mimeTypeForPath(filePath) {
const ext = path.extname(filePath || '').toLowerCase()
return MEDIA_MIME_TYPES[ext] || 'application/octet-stream'
}
function extensionForMimeType(mimeType) {
const type = String(mimeType || '')
.split(';')[0]
.trim()
.toLowerCase()
if (type === 'image/png') return '.png'
if (type === 'image/jpeg') return '.jpg'
if (type === 'image/gif') return '.gif'
if (type === 'image/webp') return '.webp'
if (type === 'image/bmp') return '.bmp'
if (type === 'image/svg+xml') return '.svg'
return ''
}
function filenameFromUrl(rawUrl, fallback = 'image') {
try {
const parsed = new URL(rawUrl)
const base = path.basename(decodeURIComponent(parsed.pathname || ''))
return base && base.includes('.') ? base : fallback
} catch {
return fallback
}
}
// Link title resolution — curl (tier 1) → hidden BrowserWindow (tier 2).
const titleCache = new Map()
const titleInflight = new Map()
const TITLE_CACHE_LIMIT = 500
const TITLE_BYTE_BUDGET = 96 * 1024
const TITLE_TIMEOUT_MS = 5000
const TITLE_MAX_REDIRECTS = 3
// Browser-shaped UA — many bot-walled sites (GetYourGuide, Cloudflare-protected
// pages) refuse anything that doesn't look like a real Chrome.
const TITLE_USER_AGENT =
'Mozilla/5.0 (Macintosh; Intel Mac OS X 14_6_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 Safari/537.36'
const TITLE_ERROR_RE =
/\b(access denied|attention required|captcha|error|forbidden|just a moment|request blocked|too many requests)\b/i
const HTML_ENTITIES = { amp: '&', lt: '<', gt: '>', quot: '"', apos: "'", nbsp: ' ', '#39': "'" }
// Tier-2 renderer fallback config. Only invoked when curl came back empty or
// matched TITLE_ERROR_RE — keeps cold/CDN-cached pages on the cheap path.
const RENDER_TITLE_MAX_CONCURRENT = 2
const RENDER_TITLE_TIMEOUT_MS = 8000
const RENDER_TITLE_GRACE_MS = 700
// Resource types we cancel before the network even fires — keeps the hidden
// renderer fast and cuts third-party tracking noise.
const RENDER_TITLE_BLOCKED_RESOURCES = new Set([
'cspReport',
'font',
'imageset',
'media',
'object',
'ping',
'stylesheet'
])
let linkTitleSession = null
let oauthSession = null
let renderTitleInFlight = 0
const renderTitleQueue = []
function canonicalTitleCacheKey(rawUrl) {
const value = String(rawUrl || '').trim()
if (!value) return ''
try {
const url = new URL(value)
const host = url.hostname.replace(/^www\./i, '').toLowerCase()
const pathname = url.pathname === '/' ? '/' : url.pathname.replace(/\/+$/, '') || '/'
return `${host}${pathname}${url.search || ''}`
} catch {
return value
}
}
function cacheTitle(key, title) {
if (titleCache.size >= TITLE_CACHE_LIMIT) titleCache.delete(titleCache.keys().next().value)
titleCache.set(key, title)
}
function decodeHtmlEntities(value) {
return value
.replace(/&(amp|lt|gt|quot|apos|nbsp|#39);/gi, (_, k) => HTML_ENTITIES[k.toLowerCase()] ?? '')
.replace(/&#x([0-9a-f]+);/gi, (_, hex) => String.fromCodePoint(parseInt(hex, 16) || 32))
.replace(/&#(\d+);/g, (_, dec) => String.fromCodePoint(parseInt(dec, 10) || 32))
}
function parseHtmlTitle(html) {
const raw = html.match(/<title[^>]*>([\s\S]*?)<\/title>/i)?.[1]
return raw ? decodeHtmlEntities(raw).replace(/\s+/g, ' ').trim() : ''
}
function fetchHtmlTitleWithCurl(rawUrl) {
return new Promise(resolve => {
const url = String(rawUrl || '').trim()
if (!url) return resolve('')
const args = [
'--silent',
'--show-error',
'--location',
'--max-redirs',
String(TITLE_MAX_REDIRECTS),
'--max-time',
String(Math.max(2, Math.ceil(TITLE_TIMEOUT_MS / 1000))),
'--connect-timeout',
'4',
'--user-agent',
TITLE_USER_AGENT,
'--header',
'Accept: text/html,application/xhtml+xml;q=0.9,*/*;q=0.5',
'--header',
'Accept-Language: en-US,en;q=0.7',
'--header',
'Accept-Encoding: identity',
'--raw',
url
]
const child = spawn('curl', args, { stdio: ['ignore', 'pipe', 'ignore'] })
const chunks = []
let bytes = 0
child.stdout.on('data', chunk => {
if (bytes >= TITLE_BYTE_BUDGET) return
const buffer = Buffer.isBuffer(chunk) ? chunk : Buffer.from(chunk)
const remaining = TITLE_BYTE_BUDGET - bytes
const next = buffer.length > remaining ? buffer.subarray(0, remaining) : buffer
chunks.push(next)
bytes += next.length
})
child.on('error', () => resolve(''))
child.on('close', () => {
if (!chunks.length) return resolve('')
resolve(parseHtmlTitle(Buffer.concat(chunks).toString('utf8')))
})
})
}
function getLinkTitleSession() {
if (linkTitleSession || !app.isReady()) return linkTitleSession
linkTitleSession = session.fromPartition('hermes:link-titles', { cache: false })
linkTitleSession.webRequest.onBeforeRequest((details, callback) => {
callback({ cancel: RENDER_TITLE_BLOCKED_RESOURCES.has(details.resourceType) })
})
return linkTitleSession
}
function dequeueRenderTitle() {
while (renderTitleInFlight < RENDER_TITLE_MAX_CONCURRENT && renderTitleQueue.length) {
const item = renderTitleQueue.shift()
renderTitleInFlight += 1
runRenderTitleJob(item.url).then(title => {
renderTitleInFlight -= 1
item.resolve(title)
dequeueRenderTitle()
})
}
}
function runRenderTitleJob(rawUrl) {
return new Promise(resolve => {
if (!app.isReady()) return resolve('')
const partitionSession = getLinkTitleSession()
if (!partitionSession) return resolve('')
let settled = false
let window = null
let hardTimer = null
let graceTimer = null
const finish = title => {
if (settled) return
settled = true
if (hardTimer) clearTimeout(hardTimer)
if (graceTimer) clearTimeout(graceTimer)
const value = (title || '').replace(/\s+/g, ' ').trim()
try {
if (window && !window.isDestroyed()) window.destroy()
} catch {
// BrowserWindow may already be torn down; ignore.
}
resolve(value)
}
try {
window = new BrowserWindow({
show: false,
width: 1280,
height: 800,
webPreferences: {
backgroundThrottling: false,
contextIsolation: true,
javascript: true,
nodeIntegration: false,
sandbox: true,
session: partitionSession,
webSecurity: true
}
})
} catch {
return finish('')
}
const readTitle = () => window?.webContents?.getTitle?.() || ''
const scheduleGrace = () => {
if (graceTimer) clearTimeout(graceTimer)
graceTimer = setTimeout(() => finish(readTitle()), RENDER_TITLE_GRACE_MS)
}
hardTimer = setTimeout(() => finish(readTitle()), RENDER_TITLE_TIMEOUT_MS)
window.webContents.setUserAgent(TITLE_USER_AGENT)
window.webContents.on('page-title-updated', scheduleGrace)
window.webContents.on('did-finish-load', scheduleGrace)
window.webContents.on('did-fail-load', (_event, _code, _desc, _validatedURL, isMainFrame) => {
if (isMainFrame) finish('')
})
window
.loadURL(rawUrl, {
httpReferrer: 'https://www.google.com/',
userAgent: TITLE_USER_AGENT
})
.catch(() => finish(''))
})
}
function fetchHtmlTitleWithRenderer(rawUrl) {
return new Promise(resolve => {
renderTitleQueue.push({ resolve, url: rawUrl })
dequeueRenderTitle()
})
}
// Strips known error/captcha titles (e.g. "GetYourGuide Error", "Just a
// moment...") so they don't get cached as the resolved title.
const usableTitle = value => (value && !TITLE_ERROR_RE.test(value) ? value : '')
function fetchLinkTitle(rawUrl) {
const url = String(rawUrl || '').trim()
const key = canonicalTitleCacheKey(url)
if (!key) return Promise.resolve('')
if (titleCache.has(key)) return Promise.resolve(titleCache.get(key))
if (titleInflight.has(key)) return titleInflight.get(key)
const pending = fetchHtmlTitleWithCurl(url)
.catch(() => '')
.then(value => usableTitle((value || '').slice(0, 240)))
.then(
async value => value || usableTitle(((await fetchHtmlTitleWithRenderer(url).catch(() => '')) || '').slice(0, 240))
)
.then(clean => {
cacheTitle(key, clean)
titleInflight.delete(key)
return clean
})
titleInflight.set(key, pending)
return pending
}
async function resourceBufferFromUrl(rawUrl) {
if (!rawUrl) throw new Error('Missing URL')
if (rawUrl.startsWith('data:')) {
const match = rawUrl.match(/^data:([^;,]+)?(;base64)?,(.*)$/s)
if (!match) throw new Error('Invalid data URL')
const mimeType = match[1] || 'application/octet-stream'
const encoded = match[3] || ''
const buffer = match[2] ? Buffer.from(encoded, 'base64') : Buffer.from(decodeURIComponent(encoded), 'utf8')
return { buffer, mimeType }
}
if (rawUrl.startsWith('file:')) {
const filePath = fileURLToPath(rawUrl)
const buffer = await fs.promises.readFile(filePath)
return { buffer, mimeType: mimeTypeForPath(filePath) }
}
const parsed = new URL(rawUrl)
const client = parsed.protocol === 'https:' ? https : http
return new Promise((resolve, reject) => {
const req = client.get(parsed, res => {
if ((res.statusCode || 500) >= 400) {
reject(new Error(`Failed to fetch ${rawUrl}: ${res.statusCode}`))
res.resume()
return
}
const chunks = []
res.on('error', reject)
res.on('data', chunk => chunks.push(chunk))
res.on('end', () => {
resolve({
buffer: Buffer.concat(chunks),
mimeType: res.headers['content-type'] || 'application/octet-stream'
})
})
})
req.on('error', reject)
})
}
async function copyImageFromUrl(rawUrl) {
const { buffer } = await resourceBufferFromUrl(rawUrl)
const image = nativeImage.createFromBuffer(buffer)
if (image.isEmpty()) throw new Error('Could not read image')
clipboard.writeImage(image)
}
async function saveImageFromUrl(rawUrl) {
const { buffer, mimeType } = await resourceBufferFromUrl(rawUrl)
const fallbackName = filenameFromUrl(rawUrl, `image${extensionForMimeType(mimeType) || '.png'}`)
const result = await dialog.showSaveDialog(mainWindow, {
title: 'Save Image',
defaultPath: fallbackName
})
if (result.canceled || !result.filePath) return false
await fs.promises.writeFile(result.filePath, buffer)
return true
}
async function writeComposerImage(buffer, ext = '.png') {
const rawExt = String(ext || '.png')
.trim()
.toLowerCase()
const normalizedExt = rawExt.startsWith('.') ? rawExt : `.${rawExt}`
const safeExt = /^\.[a-z0-9]{1,5}$/.test(normalizedExt) ? normalizedExt : '.png'
const dir = path.join(app.getPath('userData'), 'composer-images')
await fs.promises.mkdir(dir, { recursive: true })
const stamp = new Date().toISOString().replace(/[:.]/g, '-').replace('T', '_').replace('Z', '')
const random = crypto.randomBytes(3).toString('hex')
const filePath = path.join(dir, `composer_${stamp}_${random}${safeExt}`)
await fs.promises.writeFile(filePath, buffer)
return filePath
}
function previewLabelForUrl(url) {
return `${url.host}${url.pathname === '/' ? '' : url.pathname}`
}
function expandUserPath(filePath) {
const value = String(filePath || '').trim()
if (value === '~') {
return app.getPath('home')
}
if (value.startsWith(`~${path.sep}`) || value.startsWith('~/')) {
return path.join(app.getPath('home'), value.slice(2))
}
return value
}
function previewFileTarget(rawTarget, baseDir) {
const raw = String(rawTarget || '').trim()
const base = baseDir ? path.resolve(expandUserPath(baseDir)) : resolveHermesCwd()
const filePath = raw.startsWith('file:') ? fileURLToPath(raw) : path.resolve(base, expandUserPath(raw))
let resolved = filePath
if (directoryExists(resolved)) {
resolved = path.join(resolved, 'index.html')
}
const ext = path.extname(resolved).toLowerCase()
if (!fileExists(resolved)) {
return null
}
const mimeType = mimeTypeForPath(resolved)
const metadata = previewFileMetadata(resolved, mimeType)
const isHtml = PREVIEW_HTML_EXTENSIONS.has(ext)
const isImage = mimeType.startsWith('image/')
const previewKind = isHtml ? 'html' : isImage ? 'image' : metadata.binary ? 'binary' : 'text'
return {
binary: metadata.binary,
byteSize: metadata.byteSize,
kind: 'file',
large: metadata.large,
label: path.basename(resolved),
language: PREVIEW_LANGUAGE_BY_EXT[ext] || 'text',
mimeType,
path: resolved,
previewKind,
source: raw,
url: pathToFileURL(resolved).toString()
}
}
function previewUrlTarget(rawTarget) {
const raw = String(rawTarget || '').trim()
const url = new URL(raw)
if (!['http:', 'https:'].includes(url.protocol)) {
return null
}
if (!LOCAL_PREVIEW_HOSTS.has(url.hostname.toLowerCase())) {
return null
}
if (url.hostname === '0.0.0.0') {
url.hostname = '127.0.0.1'
}
return {
kind: 'url',
label: previewLabelForUrl(url),
source: raw,
url: url.toString()
}
}
function normalizePreviewTarget(rawTarget, baseDir) {
const raw = String(rawTarget || '').trim()
if (!raw) {
return null
}
try {
if (/^https?:\/\//i.test(raw)) {
return previewUrlTarget(raw)
}
return previewFileTarget(raw, baseDir)
} catch {
return null
}
}
function filePathFromPreviewUrl(rawUrl) {
const filePath = fileURLToPath(String(rawUrl || ''))
if (!fileExists(filePath)) {
throw new Error('Preview file is not readable')
}
return filePath
}
function sendPreviewFileChanged(payload) {
if (!mainWindow || mainWindow.isDestroyed()) return
const { webContents } = mainWindow
if (!webContents || webContents.isDestroyed()) return
webContents.send('hermes:preview-file-changed', payload)
}
function watchPreviewFile(rawUrl) {
const filePath = filePathFromPreviewUrl(rawUrl)
const watchDir = path.dirname(filePath)
const targetName = path.basename(filePath)
const id = crypto.randomBytes(12).toString('base64url')
let timer = null
const watcher = fs.watch(watchDir, (_eventType, filename) => {
const changedName = filename ? path.basename(String(filename)) : ''
if (changedName && changedName !== targetName) {
return
}
if (timer) clearTimeout(timer)
timer = setTimeout(() => {
timer = null
if (!fileExists(filePath)) return
sendPreviewFileChanged({ id, path: filePath, url: pathToFileURL(filePath).toString() })
}, PREVIEW_WATCH_DEBOUNCE_MS)
})
previewWatchers.set(id, {
close: () => {
if (timer) clearTimeout(timer)
watcher.close()
}
})
return { id, path: filePath }
}
function stopPreviewFileWatch(id) {
const watcher = previewWatchers.get(id)
if (!watcher) {
return false
}
watcher.close()
previewWatchers.delete(id)
return true
}
function closePreviewWatchers() {
for (const id of previewWatchers.keys()) {
stopPreviewFileWatch(id)
}
}
async function waitForHermes(baseUrl, token) {
const deadline = Date.now() + 45_000
let lastError = null
while (Date.now() < deadline) {
try {
await fetchJson(`${baseUrl}/api/status`, token)
return
} catch (error) {
lastError = error
await new Promise(resolve => setTimeout(resolve, 500))
}
}
throw new Error(`Hermes backend did not become ready: ${lastError?.message || 'timeout'}`)
}
function getWindowButtonPosition() {
if (!IS_MAC) return null
return mainWindow?.getWindowButtonPosition?.() || WINDOW_BUTTON_POSITION
}
function getNativeOverlayWidth() {
// macOS reports traffic-light coords via windowButtonPosition; the
// titlebarOverlay there doesn't reserve right-edge space. Windows/Linux
// render the native window-controls overlay on the right, so the renderer
// needs to inset its right cluster by this much to clear them.
return IS_MAC ? 0 : NATIVE_OVERLAY_BUTTON_WIDTH
}
function getWindowState() {
return {
isFullscreen: Boolean(mainWindow?.isFullScreen?.()),
nativeOverlayWidth: getNativeOverlayWidth(),
windowButtonPosition: getWindowButtonPosition()
}
}
function sendBackendExit(payload) {
if (!mainWindow || mainWindow.isDestroyed()) return
const { webContents } = mainWindow
if (!webContents || webContents.isDestroyed()) return
webContents.send('hermes:backend-exit', payload)
}
function sendClosePreviewRequested() {
if (!mainWindow || mainWindow.isDestroyed()) return
const { webContents } = mainWindow
if (!webContents || webContents.isDestroyed()) return
webContents.send('hermes:close-preview-requested')
}
// Tell the renderer the machine just woke. Sleep silently drops the
// renderer's WebSocket to the local backend; the renderer reconnects on this
// signal so the chat composer doesn't stay stuck on "Starting Hermes...".
function sendPowerResume() {
if (!mainWindow || mainWindow.isDestroyed()) return
const { webContents } = mainWindow
if (!webContents || webContents.isDestroyed()) return
webContents.send('hermes:power-resume')
}
let powerResumeRegistered = false
function registerPowerResumeListeners() {
if (powerResumeRegistered) return
powerResumeRegistered = true
try {
// 'resume' covers sleep/wake; 'unlock-screen' covers lock/unlock without a
// full suspend. Either can drop an idle socket.
powerMonitor.on('resume', sendPowerResume)
powerMonitor.on('unlock-screen', sendPowerResume)
} catch {
// powerMonitor is unavailable before app 'ready' on some platforms; the
// caller registers after 'ready', so this should not normally throw.
}
}
function getAppIconPath() {
return APP_ICON_PATHS.find(fileExists)
}
function sendOpenUpdatesRequested() {
if (!mainWindow || mainWindow.isDestroyed()) return
const { webContents } = mainWindow
if (!webContents || webContents.isDestroyed()) return
webContents.send('hermes:open-updates')
if (!mainWindow.isVisible()) mainWindow.show()
mainWindow.focus()
}
function sendWindowStateChanged(nextIsFullscreen) {
if (!mainWindow || mainWindow.isDestroyed()) return
const { webContents } = mainWindow
if (!webContents || webContents.isDestroyed()) return
const state = getWindowState()
if (typeof nextIsFullscreen === 'boolean') {
state.isFullscreen = nextIsFullscreen
}
webContents.send('hermes:window-state-changed', state)
}
function buildApplicationMenu() {
const template = []
const checkForUpdatesItem = {
label: 'Check for Updates…',
click: () => sendOpenUpdatesRequested()
}
if (IS_MAC) {
template.push({
label: APP_NAME,
submenu: [
{ role: 'about', label: `About ${APP_NAME}` },
checkForUpdatesItem,
{ type: 'separator' },
{ role: 'services' },
{ type: 'separator' },
{ role: 'hide' },
{ role: 'hideOthers' },
{ role: 'unhide' },
{ type: 'separator' },
{ role: 'quit' }
]
})
}
template.push({
label: 'File',
submenu: [
IS_MAC
? {
accelerator: 'CommandOrControl+W',
click: () => {
if (previewShortcutActive) {
sendClosePreviewRequested()
} else {
mainWindow?.close()
}
},
label: 'Close'
}
: { role: 'quit' }
]
})
template.push({
label: 'Edit',
submenu: [
{ role: 'undo' },
{ role: 'redo' },
{ type: 'separator' },
{ role: 'cut' },
{ role: 'copy' },
{ role: 'paste' },
{ role: 'delete' },
{ role: 'selectAll' }
]
})
template.push({
label: 'View',
submenu: [
{ role: 'reload' },
{ role: 'forceReload' },
{ role: 'toggleDevTools' },
{ type: 'separator' },
{
label: 'Actual Size',
accelerator: 'CommandOrControl+0',
click: () => {
if (mainWindow && !mainWindow.isDestroyed()) mainWindow.webContents.setZoomLevel(0)
}
},
{
label: 'Zoom In',
accelerator: 'CommandOrControl+Plus',
click: () => {
if (mainWindow && !mainWindow.isDestroyed()) {
const next = Math.min(mainWindow.webContents.getZoomLevel() + 0.1, 9)
mainWindow.webContents.setZoomLevel(next)
}
}
},
{
label: 'Zoom Out',
accelerator: 'CommandOrControl+-',
click: () => {
if (mainWindow && !mainWindow.isDestroyed()) {
const next = Math.max(mainWindow.webContents.getZoomLevel() - 0.1, -9)
mainWindow.webContents.setZoomLevel(next)
}
}
},
{ type: 'separator' },
{ role: 'togglefullscreen' }
]
})
template.push({
label: 'Window',
submenu: IS_MAC
? [{ role: 'minimize' }, { role: 'zoom' }, { role: 'front' }]
: [{ role: 'minimize' }, { role: 'close' }]
})
template.push({
label: 'Help',
role: 'help',
submenu: [checkForUpdatesItem]
})
return Menu.buildFromTemplate(template)
}
function toggleDevTools(window) {
// DevTools is enabled in packaged builds so users can diagnose renderer
// issues without needing a dev build. Trade-off: tiny attack surface
// increase versus a much better support story when WS connection or
// CSP issues surface in the field.
const { webContents } = window
if (webContents.isDevToolsOpened()) {
webContents.closeDevTools()
} else {
webContents.openDevTools({ mode: 'detach' })
}
}
function installDevToolsShortcut(window) {
// F12 / Cmd+Opt+I works in both dev and packaged builds.
window.webContents.on('before-input-event', (event, input) => {
const key = input.key.toLowerCase()
const isInspectShortcut =
input.key === 'F12' ||
(IS_MAC && input.meta && input.alt && key === 'i') ||
(!IS_MAC && input.control && input.shift && key === 'i')
if (!isInspectShortcut) return
event.preventDefault()
toggleDevTools(window)
})
}
function installPreviewShortcut(window) {
window.webContents.on('before-input-event', (event, input) => {
const key = String(input.key || '').toLowerCase()
const isPreviewCloseShortcut = key === 'w' && (IS_MAC ? input.meta : input.control) && !input.alt && !input.shift
if (!isPreviewCloseShortcut || !previewShortcutActive) return
event.preventDefault()
sendClosePreviewRequested()
})
}
function installZoomShortcuts(window) {
// Override Ctrl/Cmd + +/-/0 with half the default zoom step (0.1 vs 0.2).
// The menu items handle this on macOS (where the menu is always present),
// but on Linux/Windows the menu is null and Chromium's default handler
// would use the full 0.2 step, so we intercept here for consistency.
const ZOOM_STEP = 0.1
window.webContents.on('before-input-event', (event, input) => {
const mod = IS_MAC ? input.meta : input.control
if (!mod || input.alt || input.shift) return
const key = input.key
if (key === '0') {
event.preventDefault()
window.webContents.setZoomLevel(0)
} else if (key === '=' || key === '+') {
event.preventDefault()
const next = Math.min(window.webContents.getZoomLevel() + ZOOM_STEP, 9)
window.webContents.setZoomLevel(next)
} else if (key === '-') {
event.preventDefault()
const next = Math.max(window.webContents.getZoomLevel() - ZOOM_STEP, -9)
window.webContents.setZoomLevel(next)
}
})
}
function installContextMenu(window) {
window.webContents.on('context-menu', (_event, params) => {
const template = []
const hasSelection = Boolean(params.selectionText?.trim())
const hasImage = params.mediaType === 'image' && Boolean(params.srcURL)
const hasLink = Boolean(params.linkURL)
const isEditable = Boolean(params.isEditable)
if (hasImage) {
template.push(
{
label: 'Open Image',
click: () => {
if (params.srcURL && !params.srcURL.startsWith('data:')) {
openExternalUrl(params.srcURL)
}
},
enabled: !params.srcURL.startsWith('data:')
},
{
label: 'Copy Image',
click: () => {
void copyImageFromUrl(params.srcURL).catch(error => rememberLog(`Copy image failed: ${error.message}`))
}
},
{
label: 'Copy Image Address',
click: () => clipboard.writeText(params.srcURL)
},
{
label: 'Save Image As...',
click: () => {
void saveImageFromUrl(params.srcURL).catch(error => rememberLog(`Save image failed: ${error.message}`))
}
}
)
}
if (hasLink) {
if (template.length) template.push({ type: 'separator' })
template.push(
{
label: 'Open Link',
click: () => openExternalUrl(params.linkURL)
},
{
label: 'Copy Link',
click: () => clipboard.writeText(params.linkURL)
}
)
}
// Spell-check suggestions for the misspelled word under the caret.
// Chromium surfaces them on `params.dictionarySuggestions`; we offer the
// top 5 plus a "Add to dictionary" affordance.
const suggestions = Array.isArray(params.dictionarySuggestions) ? params.dictionarySuggestions : []
if (isEditable && params.misspelledWord && suggestions.length > 0) {
if (template.length) template.push({ type: 'separator' })
for (const suggestion of suggestions.slice(0, 5)) {
template.push({
label: suggestion,
click: () => window.webContents.replaceMisspelling(suggestion)
})
}
template.push({ type: 'separator' })
template.push({
label: 'Add to dictionary',
click: () => window.webContents.session.addWordToSpellCheckerDictionary(params.misspelledWord)
})
}
if (hasSelection || isEditable) {
if (template.length) template.push({ type: 'separator' })
if (isEditable) {
template.push(
{ role: 'cut', enabled: params.editFlags.canCut },
{ role: 'copy', enabled: params.editFlags.canCopy },
{ role: 'paste', enabled: params.editFlags.canPaste },
{ type: 'separator' },
{ role: 'selectAll', enabled: params.editFlags.canSelectAll }
)
} else {
template.push({ role: 'copy', enabled: params.editFlags.canCopy })
}
}
if (!template.length) {
template.push({ role: 'selectAll' })
}
Menu.buildFromTemplate(template).popup({ window })
})
}
// Microphone capture for the voice composer. The renderer drives mic access
// through getUserMedia, which Chromium gates behind these two session hooks.
//
// The naive `details.mediaTypes.includes('audio')` check works on macOS but
// breaks on Windows: Chromium frequently fires the mic permission request with
// an empty/undefined `mediaTypes`, so the strict check denies it and
// getUserMedia throws NotAllowedError ("Microphone permission was denied").
// We therefore treat an audio-capture request as allowed whenever it's the
// 'media'/'audioCapture' permission AND mediaTypes either includes 'audio' OR
// is empty/absent (the Windows case). Video is still denied.
function isAudioCapturePermission(permission, details) {
if (permission === 'audioCapture') {
return true
}
if (permission !== 'media') {
return false
}
const mediaTypes = details?.mediaTypes
if (!Array.isArray(mediaTypes) || mediaTypes.length === 0) {
// Windows: mediaTypes is often empty for a mic request. Don't deny on
// missing metadata. (A video request would carry mediaTypes:['video'].)
return true
}
return mediaTypes.includes('audio') && !mediaTypes.includes('video')
}
function installMediaPermissions() {
// Async request handler: the prompt-style path (most platforms).
session.defaultSession.setPermissionRequestHandler((_webContents, permission, callback, details) => {
callback(isAudioCapturePermission(permission, details))
})
// Synchronous check handler: Chromium consults this for getUserMedia on
// Windows in addition to (or instead of) the request handler. Without it,
// the check defaults to false and the mic is denied before the request
// handler ever runs.
session.defaultSession.setPermissionCheckHandler((_webContents, permission, _origin, details) => {
if (permission === 'media' || permission === 'audioCapture') {
// details.mediaType is a single string here (not the mediaTypes array).
const mediaType = details?.mediaType
if (mediaType === 'video') {
return false
}
return true
}
return false
})
}
// ---------------------------------------------------------------------------
// OAuth remote-gateway auth.
//
// Hosted Hermes gateways gate the dashboard behind an OAuth provider (e.g.
// Nous Research) instead of a static session token. The auth model is
// fundamentally different from the token path:
//
// * REST is authed by HttpOnly session cookies (``hermes_session_at``),
// established by a browser redirect round-trip (/login → IDP →
// /auth/callback sets cookies). We cannot read the HttpOnly cookie value
// in JS — instead we let an Electron BrowserWindow complete the round
// trip into a PERSISTENT session partition, and thereafter route our REST
// through Electron's ``net`` bound to that same partition so the cookie
// jar attaches the cookie automatically.
// * WebSocket upgrades require a single-use ``?ticket=`` minted at
// ``POST /api/auth/ws-ticket`` (cookie-authed). The legacy ``?token=``
// path is unconditionally rejected by gated gateways.
// * Nous Portal contract v1 issues NO refresh token; the access cookie has
// a ~15-min TTL. On 401 we must re-run the login round trip.
// ---------------------------------------------------------------------------
const OAUTH_SESSION_PARTITION = 'persist:hermes-remote-oauth'
function getOauthSession() {
if (oauthSession || !app.isReady()) return oauthSession
oauthSession = session.fromPartition(OAUTH_SESSION_PARTITION)
return oauthSession
}
// Bare + prefixed variants of the access-token cookie live in
// connection-config.cjs (cookiesHaveSession). See that module for details.
async function hasOauthSessionCookie(baseUrl) {
const sess = getOauthSession()
if (!sess) return false
const parsed = new URL(baseUrl)
try {
// Query by URL so the cookie jar applies Domain/Path/Secure scoping for us.
const cookies = await sess.cookies.get({ url: baseUrl })
return cookiesHaveSession(cookies)
} catch {
// Fall back to a host match if the URL query path errors.
try {
const cookies = await sess.cookies.get({ domain: parsed.hostname })
return cookiesHaveSession(cookies)
} catch {
return false
}
}
}
async function clearOauthSession(baseUrl) {
const sess = getOauthSession()
if (!sess) return
try {
const cookies = await sess.cookies.get(baseUrl ? { url: baseUrl } : {})
await Promise.all(
cookies.map(c => {
const scheme = c.secure ? 'https' : 'http'
const cookieUrl = `${scheme}://${c.domain.replace(/^\./, '')}${c.path || '/'}`
return sess.cookies.remove(cookieUrl, c.name).catch(() => undefined)
})
)
} catch {
// Best effort — a stale cookie self-expires anyway.
}
}
// Open the gateway's /login page in a visible window using the OAuth session
// partition, and resolve once the access-token cookie appears (login done) or
// reject if the user closes the window first. The window navigates through the
// IDP and back to /auth/callback, which sets the session cookies on the
// partition; we poll the cookie jar rather than try to read the HttpOnly value.
function openOauthLoginWindow(baseUrl) {
return new Promise((resolve, reject) => {
if (!app.isReady()) {
reject(new Error('Desktop is not ready to start an OAuth login.'))
return
}
const sess = getOauthSession()
if (!sess) {
reject(new Error('OAuth session partition is unavailable.'))
return
}
let settled = false
let win = null
let pollTimer = null
const finish = err => {
if (settled) return
settled = true
if (pollTimer) clearInterval(pollTimer)
try {
if (win && !win.isDestroyed()) win.destroy()
} catch {
// window already torn down
}
if (err) reject(err)
else resolve({ baseUrl, ok: true })
}
const checkCookie = async () => {
if (settled) return
if (await hasOauthSessionCookie(baseUrl)) finish(null)
}
try {
win = new BrowserWindow({
width: 520,
height: 720,
title: 'Sign in to Hermes gateway',
autoHideMenuBar: true,
webPreferences: {
contextIsolation: true,
nodeIntegration: false,
sandbox: true,
session: sess,
webSecurity: true
}
})
} catch (error) {
finish(error instanceof Error ? error : new Error(String(error)))
return
}
// Re-check the cookie jar on every successful navigation (the callback
// redirect is the moment cookies get set) plus a low-frequency poll as a
// belt-and-braces fallback for IDPs that finish via in-page JS.
win.webContents.on('did-navigate', () => void checkCookie())
win.webContents.on('did-redirect-navigation', () => void checkCookie())
win.webContents.on('did-frame-navigate', () => void checkCookie())
pollTimer = setInterval(() => void checkCookie(), 750)
win.on('closed', () => {
if (!settled) finish(new Error('Login window closed before authentication completed.'))
})
// ``next`` is intentionally omitted: the gateway lands on ``/`` after
// login, which is a valid authenticated page that sets the cookies. We
// only care that the cookie jar is populated.
const loginUrl = `${normalizeRemoteBaseUrl(baseUrl)}/login`
win.loadURL(loginUrl).catch(error => {
finish(error instanceof Error ? error : new Error(String(error)))
})
})
}
// JSON request routed through the OAuth session partition so the HttpOnly
// session cookie is attached automatically by Electron's net stack. Used for
// authed REST against a gated gateway, including minting WS tickets.
function fetchJsonViaOauthSession(url, options = {}) {
return new Promise((resolve, reject) => {
const sess = getOauthSession()
if (!sess) {
reject(new Error('OAuth session partition is unavailable.'))
return
}
let parsed
try {
parsed = new URL(url)
} catch (error) {
reject(new Error(`Invalid URL: ${error.message}`))
return
}
if (parsed.protocol !== 'http:' && parsed.protocol !== 'https:') {
reject(new Error(`Unsupported Hermes backend URL protocol: ${parsed.protocol}`))
return
}
const body = options.body === undefined ? undefined : Buffer.from(JSON.stringify(options.body))
const timeoutMs = resolveTimeoutMs(options.timeoutMs, DEFAULT_FETCH_TIMEOUT_MS)
const request = electronNet.request({
method: options.method || 'GET',
url,
session: sess,
useSessionCookies: true,
redirect: 'follow'
})
request.setHeader('Content-Type', 'application/json')
if (body) request.setHeader('Content-Length', String(body.length))
let timedOut = false
const timer = setTimeout(() => {
timedOut = true
try {
request.abort()
} catch {
// already finished
}
reject(new Error(`Timed out connecting to Hermes backend after ${timeoutMs}ms`))
}, timeoutMs)
request.on('response', res => {
const chunks = []
res.on('data', chunk => chunks.push(Buffer.from(chunk)))
res.on('end', () => {
if (timedOut) return
clearTimeout(timer)
const text = Buffer.concat(chunks).toString('utf8')
const statusCode = res.statusCode || 500
if (statusCode >= 400) {
const err = new Error(`${statusCode}: ${text || ''}`)
err.statusCode = statusCode
reject(err)
return
}
if (!text) {
resolve(null)
return
}
const looksHtml = /^\s*<(?:!doctype|html)/i.test(text)
const contentType = String(res.headers['content-type'] || res.headers['Content-Type'] || '')
if (looksHtml || contentType.includes('text/html')) {
reject(new Error(`Expected JSON from ${url} but got HTML (status ${statusCode}).`))
return
}
try {
resolve(JSON.parse(text))
} catch {
reject(new Error(`Invalid JSON from ${url} (status ${statusCode}): ${text.slice(0, 200)}`))
}
})
})
request.on('error', error => {
if (timedOut) return
clearTimeout(timer)
reject(error)
})
if (body) request.write(body)
request.end()
})
}
// Mint a single-use WS ticket for a gated gateway. Returns the ticket string.
// Throws (with statusCode 401) if the session cookie is missing/expired —
// callers treat that as "needs re-login".
async function mintGatewayWsTicket(baseUrl) {
const body = await fetchJsonViaOauthSession(`${baseUrl}/api/auth/ws-ticket`, {
method: 'POST',
timeoutMs: 8_000
})
const ticket = body?.ticket
if (!ticket || typeof ticket !== 'string') {
throw new Error('Gateway did not return a WS ticket.')
}
return ticket
}
// Build a fresh WS URL for the *current* connection. Critical for reconnects:
// OAuth WS tickets are single-use with a ~30s TTL, so the ticket baked into
// the cached connection's wsUrl is stale on the second connect. The renderer
// calls this immediately before every gateway.connect() so each WS upgrade
// carries a freshly-minted ticket. For local/token connections this just
// reuses the static token (no minting needed).
async function freshGatewayWsUrl(profile) {
// Mint for the requested profile's backend, NOT always the primary. The
// renderer re-mints right before every gateway.connect(); when swapping to a
// pooled profile we must return THAT backend's ws URL, otherwise the connect
// silently lands back on the primary (default) backend and writes sessions to
// the wrong profile's DB. A null/empty profile resolves to the primary, so
// legacy callers and single-profile users are unchanged.
const connection = await ensureBackend(profile)
if (connection.authMode === 'oauth') {
const ticket = await mintGatewayWsTicket(connection.baseUrl)
return buildGatewayWsUrlWithTicket(connection.baseUrl, ticket)
}
// Local/token: the cached wsUrl already carries the (long-lived) token.
return connection.wsUrl
}
function encryptDesktopSecret(value) {
return encryptDesktopSecretStrict(value, safeStorage)
}
function decryptDesktopSecret(secret) {
if (!secret || typeof secret !== 'object') {
return ''
}
const value = String(secret.value || '')
if (!value) {
return ''
}
if (secret.encoding === 'safeStorage') {
try {
return safeStorage.decryptString(Buffer.from(value, 'base64'))
} catch {
return ''
}
}
return value
}
function readDesktopConnectionConfig() {
// Check if file changed on disk since last read (e.g. modified by another
// process or an external tool). Our own writes update the cache inline
// via writeDesktopConnectionConfig, but external changes would be missed.
let mtime = null
try {
mtime = fs.statSync(DESKTOP_CONNECTION_CONFIG_PATH).mtimeMs
} catch {
mtime = null
}
if (connectionConfigCache && connectionConfigCacheMtime === mtime) {
return connectionConfigCache
}
let config = { mode: 'local', remote: {} }
try {
const raw = fs.readFileSync(DESKTOP_CONNECTION_CONFIG_PATH, 'utf8')
const parsed = JSON.parse(raw)
if (parsed && typeof parsed === 'object') {
const remote = parsed.remote && typeof parsed.remote === 'object' ? parsed.remote : {}
// authMode lives on the remote sub-object: 'oauth' (cookie + ws-ticket)
// or 'token' (legacy static session token). Default to 'token' for
// backward compatibility with configs written before OAuth support.
remote.authMode = remote.authMode === 'oauth' ? 'oauth' : 'token'
config = {
mode: parsed.mode === 'remote' ? 'remote' : 'local',
remote
}
}
} catch {
// Missing or malformed connection settings should fall back to local.
}
connectionConfigCache = config
connectionConfigCacheMtime = mtime
return config
}
function writeDesktopConnectionConfig(config) {
fs.mkdirSync(path.dirname(DESKTOP_CONNECTION_CONFIG_PATH), { recursive: true })
writeFileAtomic(DESKTOP_CONNECTION_CONFIG_PATH, JSON.stringify(config, null, 2))
connectionConfigCache = config
connectionConfigCacheMtime = fs.statSync(DESKTOP_CONNECTION_CONFIG_PATH).mtimeMs
}
// Returns the desktop's chosen profile name, or null when unset. "default" is
// a valid stored value (pins the root HERMES_HOME explicitly); null means "no
// preference" and preserves the legacy launch (no --profile flag).
function readActiveDesktopProfile() {
try {
const raw = fs.readFileSync(DESKTOP_PROFILE_CONFIG_PATH, 'utf8')
const parsed = JSON.parse(raw)
const name = parsed && typeof parsed.profile === 'string' ? parsed.profile.trim() : ''
if (name && (name === 'default' || PROFILE_NAME_RE.test(name))) {
return name
}
} catch {
// Missing or malformed → no preference.
}
return null
}
function writeActiveDesktopProfile(name) {
const value = typeof name === 'string' ? name.trim() : ''
if (value && value !== 'default' && !PROFILE_NAME_RE.test(value)) {
throw new Error(`Invalid profile name: ${value}`)
}
fs.mkdirSync(path.dirname(DESKTOP_PROFILE_CONFIG_PATH), { recursive: true })
writeFileAtomic(DESKTOP_PROFILE_CONFIG_PATH, JSON.stringify({ profile: value || null }, null, 2))
return value || null
}
async function sanitizeDesktopConnectionConfig(config = readDesktopConnectionConfig()) {
const remoteToken = decryptDesktopSecret(config.remote?.token)
const authMode = config.remote?.authMode === 'oauth' ? 'oauth' : 'token'
const remoteUrl = String(config.remote?.url || '')
let remoteOauthConnected = false
if (authMode === 'oauth' && remoteUrl) {
try {
remoteOauthConnected = await hasOauthSessionCookie(remoteUrl)
} catch {
remoteOauthConnected = false
}
}
return {
mode: config.mode === 'remote' ? 'remote' : 'local',
remoteAuthMode: authMode,
remoteOauthConnected,
remoteUrl,
remoteTokenPreview: tokenPreview(remoteToken),
remoteTokenSet: Boolean(remoteToken),
envOverride: Boolean(process.env.HERMES_DESKTOP_REMOTE_URL)
}
}
function coerceDesktopConnectionConfig(input = {}, existing = readDesktopConnectionConfig(), options = {}) {
const persistToken = options.persistToken !== false
const mode = input.mode === 'remote' ? 'remote' : 'local'
const remoteUrl = String(input.remoteUrl ?? existing.remote?.url ?? '').trim()
// authMode: explicit input wins; otherwise inherit the saved value, default 'token'.
const authMode = resolveAuthMode(input.remoteAuthMode, existing.remote?.authMode)
const incomingToken = typeof input.remoteToken === 'string' ? input.remoteToken.trim() : ''
const existingToken = existing.remote?.token
const nextRemote = {
url: remoteUrl,
authMode,
token: incomingToken
? persistToken
? encryptDesktopSecret(incomingToken)
: { encoding: 'plain', value: incomingToken }
: existingToken
}
if (mode === 'remote') {
nextRemote.url = normalizeRemoteBaseUrl(remoteUrl)
// OAuth gateways authenticate via the session cookie established by the
// login window, NOT a static token — so no token is required here. The
// cookie presence is verified at connect time (resolveRemoteBackend).
if (authMode !== 'oauth' && !decryptDesktopSecret(nextRemote.token)) {
throw new Error('Remote gateway session token is required.')
}
} else if (remoteUrl) {
nextRemote.url = normalizeRemoteBaseUrl(remoteUrl)
}
return { mode, remote: nextRemote }
}
async function resolveRemoteBackend() {
const rawEnvUrl = process.env.HERMES_DESKTOP_REMOTE_URL
const rawEnvToken = process.env.HERMES_DESKTOP_REMOTE_TOKEN
if (rawEnvUrl) {
if (!rawEnvToken) {
throw new Error(
'HERMES_DESKTOP_REMOTE_URL is set but HERMES_DESKTOP_REMOTE_TOKEN is not. ' +
'Both must be provided to connect to a remote Hermes backend.'
)
}
const baseUrl = normalizeRemoteBaseUrl(rawEnvUrl)
return {
baseUrl,
mode: 'remote',
source: 'env',
authMode: 'token',
token: rawEnvToken,
wsUrl: buildGatewayWsUrl(baseUrl, rawEnvToken)
}
}
const config = readDesktopConnectionConfig()
if (config.mode !== 'remote') {
return null
}
const baseUrl = normalizeRemoteBaseUrl(config.remote?.url)
const authMode = config.remote?.authMode === 'oauth' ? 'oauth' : 'token'
if (authMode === 'oauth') {
// OAuth gateway: auth comes from the session cookie in the OAuth partition.
// Verify the cookie is present, then mint a single-use WS ticket (the
// gateway rejects ?token= in gated mode). A missing cookie / 401 means the
// user needs to (re-)log in via Settings → Gateway.
if (!(await hasOauthSessionCookie(baseUrl))) {
const err = new Error(
'Remote Hermes gateway uses OAuth, but you are not signed in. ' +
'Open Settings → Gateway and click "Sign in", or switch back to Local.'
)
err.needsOauthLogin = true
throw err
}
let ticket
try {
ticket = await mintGatewayWsTicket(baseUrl)
} catch (error) {
const err = new Error(
'Your remote gateway session has expired. ' + 'Open Settings → Gateway and click "Sign in" again.'
)
err.needsOauthLogin = true
err.cause = error
throw err
}
return {
baseUrl,
mode: 'remote',
source: 'settings',
authMode: 'oauth',
// No static token in OAuth mode; REST is cookie-authed via the partition.
token: null,
wsUrl: buildGatewayWsUrlWithTicket(baseUrl, ticket)
}
}
const token = decryptDesktopSecret(config.remote?.token)
if (!token) {
throw new Error(
'Remote Hermes gateway is selected, but no session token is saved. ' +
'Open Settings → Gateway and save a token, or switch back to Local.'
)
}
return {
baseUrl,
mode: 'remote',
source: 'settings',
authMode: 'token',
token,
wsUrl: buildGatewayWsUrl(baseUrl, token)
}
}
async function probeRemoteAuthMode(rawUrl) {
// Determine how a remote gateway expects callers to authenticate, WITHOUT
// sending any credentials. ``/api/status`` is public on every Hermes
// gateway (it backs the portal liveness probe) and reports:
// auth_required: true → OAuth gate is engaged (cookie + ws-ticket auth)
// auth_required: false → loopback/--insecure: legacy session-token auth
// ``/api/auth/providers`` (also public, only meaningful when gated) gives
// the human-facing provider name(s) for the login button label.
//
// The settings UI calls this as the user types a URL so it can render an
// OAuth login button vs a session-token entry box. Network/parse failures
// surface as ``reachable: false`` rather than throwing, so a half-typed or
// unreachable URL degrades to "can't tell yet" instead of a hard error.
const baseUrl = normalizeRemoteBaseUrl(rawUrl)
let status
try {
status = await fetchPublicJson(`${baseUrl}/api/status`, { timeoutMs: 8_000 })
} catch (error) {
return {
baseUrl,
reachable: false,
authMode: 'unknown',
providers: [],
version: null,
error: error instanceof Error ? error.message : String(error)
}
}
const authRequired = authModeFromStatus(status) === 'oauth'
let providers = []
if (authRequired) {
// Best-effort: a gated gateway exposes the registered providers so the
// button can read "Sign in with Nous Research" instead of a generic
// label, and so a username/password provider can be distinguished from
// an OAuth-redirect one (``supports_password``). A failure here doesn't
// change the auth mode, so swallow it.
try {
const body = await fetchPublicJson(`${baseUrl}/api/auth/providers`, { timeoutMs: 8_000 })
if (Array.isArray(body?.providers)) {
providers = body.providers
.filter(p => p && typeof p === 'object')
.map(p => ({
name: String(p.name || ''),
displayName: String(p.display_name || p.name || ''),
supportsPassword: Boolean(p.supports_password)
}))
.filter(p => p.name)
}
} catch {
// Provider listing is optional metadata; the auth mode is already known.
}
}
return {
baseUrl,
reachable: true,
authMode: authRequired ? 'oauth' : 'token',
providers,
version: status?.version || null,
error: null
}
}
async function testDesktopConnectionConfig(input = {}) {
const config = coerceDesktopConnectionConfig(input, readDesktopConnectionConfig(), { persistToken: false })
// ``/api/status`` is public on every gateway (no creds needed), so a
// reachability test works for local, token, and oauth modes alike — we only
// need a base URL. For a remote config we normalize the URL from the input;
// for local we fall back to the resolved/started backend.
let baseUrl
let token = null
let authMode = 'token'
if (config.mode === 'remote') {
baseUrl = normalizeRemoteBaseUrl(config.remote.url)
authMode = config.remote.authMode === 'oauth' ? 'oauth' : 'token'
if (authMode !== 'oauth') {
token = decryptDesktopSecret(config.remote.token)
}
} else {
const remote = (await resolveRemoteBackend()) || (await startHermes())
baseUrl = remote.baseUrl
token = remote.token
authMode = remote.authMode === 'oauth' ? 'oauth' : 'token'
}
const status = await fetchJson(`${baseUrl}/api/status`, token, { timeoutMs: 8_000 })
// The HTTP status check above proves the backend is reachable, but the chat
// surface only works once the renderer's live WebSocket to ``/api/ws``
// connects — a separate transport with separate server-side guards (Host/
// Origin, ws-ticket/token auth). Validating only the HTTP side produced a
// false-positive "reachable" while the real boot still failed with "Could not
// connect to Hermes gateway". Mirror the renderer's connect here so the test
// reflects the full path the app actually uses.
const wsUrl = await resolveTestWsUrl(baseUrl, authMode, token, { mintTicket: mintGatewayWsTicket })
// Skip the WS leg only when the runtime genuinely lacks a WebSocket (so an
// older Electron/Node never fails the test spuriously); Electron's main
// process ships a global WebSocket on every supported version.
if (wsUrl && typeof globalThis.WebSocket === 'function') {
const probe = await probeGatewayWebSocket(wsUrl, { WebSocketImpl: globalThis.WebSocket })
if (!probe.ok) {
throw new Error(
`Reached the gateway over HTTP, but the live WebSocket (/api/ws) connection failed: ${probe.reason} ` +
'The HTTP check can pass while the WebSocket is blocked by a proxy, firewall, or gateway auth/origin guard.'
)
}
}
return {
ok: true,
baseUrl,
version: status?.version || null
}
}
function resetBootProgressForReconnect() {
updateBootProgress(
{
error: null,
message: 'Restarting desktop connection',
phase: 'backend.resolve',
progress: 4,
running: true
},
{ allowDecrease: true }
)
}
function resetHermesConnection() {
connectionPromise = null
if (hermesProcess && !hermesProcess.killed) {
hermesProcess.kill('SIGTERM')
}
hermesProcess = null
resetBootProgressForReconnect()
}
// Re-home the primary backend: reset connection state, then wait for the live
// dashboard process to actually exit (SIGKILL after 5s) so the next
// startHermes() spawns fresh instead of racing the dying one. Shared by the
// connection-config and profile switch flows.
async function teardownPrimaryBackendAndWait() {
// Capture the reference before resetHermesConnection() nulls hermesProcess.
const dying = hermesProcess && !hermesProcess.killed ? hermesProcess : null
resetHermesConnection()
if (!dying) {
return
}
await new Promise(resolve => {
const timer = setTimeout(() => {
try {
dying.kill('SIGKILL')
} catch {
// Already gone.
}
resolve()
}, 5000)
dying.once('exit', () => {
clearTimeout(timer)
resolve()
})
})
}
// The profile the primary (window) backend runs as. readActiveDesktopProfile()
// returns the desktop's stored preference, or null when unset (legacy launch
// that defers to active_profile / default).
function primaryProfileKey() {
return readActiveDesktopProfile() || 'default'
}
// Resolve a backend connection for the given profile. Routes the primary
// profile to startHermes() (the window backend: boot UI, bootstrap, remote
// mode), and any OTHER profile to a lazily-spawned pool backend. An empty /
// unknown profile resolves to the primary, so all legacy callers are unchanged.
async function ensureBackend(profile) {
const key = profile && String(profile).trim() ? String(profile).trim() : primaryProfileKey()
if (key === primaryProfileKey()) {
return startHermes()
}
const existing = backendPool.get(key)
if (existing) {
existing.lastActiveAt = Date.now()
return existing.connectionPromise
}
evictLruPoolBackends(POOL_MAX_BACKENDS - 1)
const entry = { process: null, port: null, token: null, connectionPromise: null, lastActiveAt: Date.now() }
entry.connectionPromise = spawnPoolBackend(key, entry).catch(error => {
backendPool.delete(key)
throw error
})
backendPool.set(key, entry)
startPoolIdleReaper()
return entry.connectionPromise
}
// Mark a pool profile as recently used so the idle reaper spares it. The
// renderer calls this when it opens a profile's chat WS and periodically while
// streaming, since the main process can't see the direct renderer↔backend WS.
function touchPoolBackend(profile) {
const key = profile && String(profile).trim() ? String(profile).trim() : null
if (!key) return
const entry = backendPool.get(key)
if (entry) entry.lastActiveAt = Date.now()
}
// Evict least-recently-used pool backends until at most `keep` remain — but only
// ever evict backends without a live renderer socket (stale beyond the keepalive
// window). When every backend is actively kept alive we let the pool exceed the
// soft cap rather than kill a running session.
function evictLruPoolBackends(keep) {
if (backendPool.size <= keep) return
const now = Date.now()
const evictable = [...backendPool.entries()]
.filter(([, entry]) => now - (entry.lastActiveAt || 0) > POOL_KEEPALIVE_FRESH_MS)
.sort((a, b) => (a[1].lastActiveAt || 0) - (b[1].lastActiveAt || 0))
let removable = backendPool.size - Math.max(0, keep)
for (const [profile] of evictable) {
if (removable <= 0) break
rememberLog(`Evicting idle profile backend "${profile}" (LRU cap ${POOL_MAX_BACKENDS})`)
stopPoolBackend(profile)
removable -= 1
}
}
function startPoolIdleReaper() {
if (poolIdleReaper) return
poolIdleReaper = setInterval(() => {
const now = Date.now()
for (const [profile, entry] of [...backendPool.entries()]) {
if (now - (entry.lastActiveAt || 0) > POOL_IDLE_MS) {
rememberLog(`Reaping idle profile backend "${profile}" (idle > ${Math.round(POOL_IDLE_MS / 1000)}s)`)
stopPoolBackend(profile)
}
}
if (backendPool.size === 0 && poolIdleReaper) {
clearInterval(poolIdleReaper)
poolIdleReaper = null
}
}, 60_000)
if (typeof poolIdleReaper.unref === 'function') poolIdleReaper.unref()
}
// Spawn an additional dashboard backend pinned to a named profile. Mirrors the
// local-spawn portion of startHermes() but without the boot-progress UI,
// bootstrap, or remote handling (those belong to the primary backend only).
async function spawnPoolBackend(profile, entry) {
// Remote deployments are single-tenant; profiles only apply to local backends.
const remote = await resolveRemoteBackend()
if (remote) {
throw new Error('Profiles are unavailable when connected to a remote Hermes backend.')
}
const port = await pickPort()
const token = crypto.randomBytes(32).toString('base64url')
// --profile wins over the inherited HERMES_HOME env (see _apply_profile_override
// step 3 in hermes_cli/main.py), so the child re-homes to this profile.
const dashboardArgs = ['--profile', profile, 'dashboard', '--no-open', '--host', '127.0.0.1', '--port', String(port)]
const backend = await ensureRuntime(resolveHermesBackend(dashboardArgs))
const hermesCwd = resolveHermesCwd()
const webDist = resolveWebDist()
rememberLog(`Starting Hermes backend for profile "${profile}" via ${backend.label}`)
const child = spawn(backend.command, backend.args, {
cwd: hermesCwd,
env: {
...process.env,
HERMES_HOME,
...backend.env,
HERMES_DASHBOARD_SESSION_TOKEN: token,
HERMES_WEB_DIST: webDist
},
shell: backend.shell,
stdio: ['ignore', 'pipe', 'pipe']
})
entry.process = child
entry.port = port
entry.token = token
child.stdout.on('data', rememberLog)
child.stderr.on('data', rememberLog)
let ready = false
let rejectStart = null
const startFailed = new Promise((_resolve, reject) => {
rejectStart = reject
})
child.once('error', error => {
rememberLog(`Hermes backend for profile "${profile}" failed to start: ${error.message}`)
backendPool.delete(profile)
rejectStart?.(error)
})
child.once('exit', (code, signal) => {
rememberLog(`Hermes backend for profile "${profile}" exited (${signal || code})`)
backendPool.delete(profile)
if (!ready) {
rejectStart?.(new Error(`Hermes backend for profile "${profile}" exited before it became ready (${signal || code}).`))
}
})
const baseUrl = `http://127.0.0.1:${port}`
await Promise.race([waitForHermes(baseUrl, token), startFailed])
ready = true
return {
baseUrl,
mode: 'local',
source: 'local',
authMode: 'token',
token,
profile,
wsUrl: `ws://127.0.0.1:${port}/api/ws?token=${encodeURIComponent(token)}`,
logs: hermesLog.slice(-80),
...getWindowState()
}
}
function stopPoolBackend(profile) {
const entry = backendPool.get(profile)
if (!entry) return
backendPool.delete(profile)
if (entry.process && !entry.process.killed) {
try {
entry.process.kill('SIGTERM')
} catch {
// Already gone.
}
}
}
function stopAllPoolBackends() {
for (const profile of [...backendPool.keys()]) {
stopPoolBackend(profile)
}
}
async function startHermes() {
// Latched-failure short-circuit: once bootstrap has failed in this
// process, every subsequent startHermes() call re-throws the same error
// without re-running install.ps1. This prevents the renderer's
// ensureGatewayOpen retries (and any other getConnection callers) from
// restarting a 5-10 minute install loop while the user is still reading
// the failure overlay.
if (bootstrapFailure) {
throw bootstrapFailure
}
if (connectionPromise) return connectionPromise
connectionPromise = (async () => {
await advanceBootProgress('backend.resolve', 'Resolving Hermes backend', 8)
const remote = await resolveRemoteBackend()
if (remote) {
await advanceBootProgress('backend.remote', `Connecting to remote Hermes backend at ${remote.baseUrl}`, 24)
await waitForHermes(remote.baseUrl, remote.token)
updateBootProgress({
phase: 'backend.ready',
message: 'Remote Hermes backend is ready',
progress: 94,
running: true,
error: null
})
return {
baseUrl: remote.baseUrl,
mode: 'remote',
source: remote.source,
authMode: remote.authMode || 'token',
token: remote.token,
wsUrl: remote.wsUrl,
logs: hermesLog.slice(-80),
...getWindowState()
}
}
await advanceBootProgress('backend.port', 'Finding an open local port', 16)
const port = await pickPort()
const token = crypto.randomBytes(32).toString('base64url')
const dashboardArgs = ['dashboard', '--no-open', '--host', '127.0.0.1', '--port', String(port)]
// Pin the desktop's chosen profile via the global --profile flag. This is
// deterministic (it wins over the sticky ~/.hermes/active_profile file) and
// resolves HERMES_HOME the same way `hermes -p <name>` does on the CLI. An
// unset preference keeps the legacy launch so existing installs are
// unaffected.
const activeProfile = readActiveDesktopProfile()
if (activeProfile) {
dashboardArgs.unshift('--profile', activeProfile)
}
await advanceBootProgress('backend.runtime', 'Resolving Hermes runtime', 28)
const backend = await ensureRuntime(resolveHermesBackend(dashboardArgs))
const hermesCwd = resolveHermesCwd()
const webDist = resolveWebDist()
await advanceBootProgress('backend.spawn', `Starting Hermes backend via ${backend.label}`, 84)
rememberLog(`Starting Hermes backend via ${backend.label}`)
hermesProcess = spawn(backend.command, backend.args, {
cwd: hermesCwd,
env: {
...process.env,
// Explicitly pin HERMES_HOME for the child so Python's get_hermes_home()
// resolves to the SAME location our resolveHermesHome() picked. Without
// this pin, Python falls back to ~/.hermes on every platform — fine on
// mac/linux (where our default matches), but on Windows our default is
// %LOCALAPPDATA%\hermes, which differs from C:\Users\<u>\.hermes.
// Mismatch would split config / sessions / .env / logs across two
// directories. install.ps1 sets HERMES_HOME via setx; the desktop
// can't reliably do that, so we set it inline for every spawn.
HERMES_HOME,
...backend.env,
HERMES_DASHBOARD_SESSION_TOKEN: token,
HERMES_WEB_DIST: webDist
},
shell: backend.shell,
stdio: ['ignore', 'pipe', 'pipe']
})
hermesProcess.stdout.on('data', rememberLog)
hermesProcess.stderr.on('data', rememberLog)
let backendReady = false
let rejectBackendStart = null
const backendStartFailed = new Promise((_resolve, reject) => {
rejectBackendStart = reject
})
hermesProcess.once('error', error => {
rememberLog(`Hermes backend failed to start: ${error.message}`)
updateBootProgress(
{
error: error.message,
message: `Hermes backend failed to start: ${error.message}`,
phase: 'backend.error',
running: false
},
{ allowDecrease: true }
)
hermesProcess = null
connectionPromise = null
sendBackendExit({ code: null, signal: null, error: error.message })
rejectBackendStart?.(error)
})
hermesProcess.once('exit', (code, signal) => {
rememberLog(`Hermes backend exited (${signal || code})`)
hermesProcess = null
connectionPromise = null
sendBackendExit({ code, signal })
if (!backendReady) {
const message = `Hermes backend exited before it became ready (${signal || code}).`
updateBootProgress(
{
error: message,
message,
phase: 'backend.error',
running: false
},
{ allowDecrease: true }
)
rejectBackendStart?.(
new Error(
`Hermes backend exited before it became ready (${signal || code}). Log: ${DESKTOP_LOG_PATH}\n${recentHermesLog()}`
)
)
}
})
const baseUrl = `http://127.0.0.1:${port}`
await advanceBootProgress('backend.wait', 'Waiting for Hermes backend to become ready', 90)
await Promise.race([waitForHermes(baseUrl, token), backendStartFailed])
backendReady = true
updateBootProgress({
phase: 'backend.ready',
message: 'Hermes backend is ready. Finalizing desktop startup',
progress: 94,
running: true,
error: null
})
return {
baseUrl,
mode: 'local',
source: 'local',
authMode: 'token',
token,
wsUrl: `ws://127.0.0.1:${port}/api/ws?token=${encodeURIComponent(token)}`,
logs: hermesLog.slice(-80),
...getWindowState()
}
})().catch(error => {
const message = error instanceof Error ? error.message : String(error)
updateBootProgress(
{
error: message,
message: `Desktop boot failed: ${message}`,
phase: 'backend.error',
running: false
},
{ allowDecrease: true }
)
connectionPromise = null
throw error
})
return connectionPromise
}
function createWindow() {
const icon = getAppIconPath()
mainWindow = new BrowserWindow({
width: 1220,
height: 800,
minWidth: 900,
minHeight: 620,
title: 'Hermes',
// Frameless title bar on every platform so the renderer can paint the
// "hide sidebar" button (and other left-side titlebar tools) flush with
// the top edge — matching the macOS layout where the traffic lights sit
// inside the same band. On Windows/Linux, titleBarOverlay tells Electron
// to paint native min/max/close in the top-right of the renderer; on
// macOS it just reserves a content inset alongside the traffic lights.
titleBarStyle: 'hidden',
titleBarOverlay: getTitleBarOverlayOptions(),
trafficLightPosition: IS_MAC ? WINDOW_BUTTON_POSITION : undefined,
vibrancy: IS_MAC ? 'sidebar' : undefined,
icon,
backgroundColor: '#f7f7f7',
webPreferences: {
preload: path.join(__dirname, 'preload.cjs'),
contextIsolation: true,
webviewTag: true,
sandbox: true,
nodeIntegration: false,
devTools: true
}
})
if (IS_MAC) {
mainWindow.setWindowButtonPosition?.(WINDOW_BUTTON_POSITION)
if (icon) {
app.dock?.setIcon(icon)
}
}
if (!IS_MAC) {
if (!nativeThemeListenerInstalled) {
nativeThemeListenerInstalled = true
nativeTheme.on('updated', () => {
mainWindow?.setTitleBarOverlay?.(getTitleBarOverlayOptions())
})
}
}
mainWindow.on('will-enter-full-screen', () => sendWindowStateChanged(true))
mainWindow.on('enter-full-screen', () => sendWindowStateChanged(true))
mainWindow.on('will-leave-full-screen', () => sendWindowStateChanged(false))
mainWindow.on('leave-full-screen', () => sendWindowStateChanged(false))
installPreviewShortcut(mainWindow)
installDevToolsShortcut(mainWindow)
installZoomShortcuts(mainWindow)
installContextMenu(mainWindow)
mainWindow.webContents.setWindowOpenHandler(details => {
openExternalUrl(details.url)
return { action: 'deny' }
})
mainWindow.webContents.on('will-navigate', (event, url) => {
if ((DEV_SERVER && url.startsWith(DEV_SERVER)) || (!DEV_SERVER && url.startsWith('file:'))) {
return
}
event.preventDefault()
openExternalUrl(url)
})
mainWindow.webContents.on('render-process-gone', (_event, details) => {
rememberLog(`[renderer] render-process-gone reason=${details?.reason} exitCode=${details?.exitCode}`)
if (details?.reason === 'crashed' || details?.reason === 'oom') {
const now = Date.now()
rendererReloadTimes = rendererReloadTimes.filter(t => now - t < RENDERER_RELOAD_WINDOW_MS)
if (rendererReloadTimes.length >= RENDERER_RELOAD_MAX) {
rememberLog(
`[renderer] suppressing reload: ${rendererReloadTimes.length} crashes within ${RENDERER_RELOAD_WINDOW_MS}ms (likely a crash loop)`
)
return
}
rendererReloadTimes.push(now)
setImmediate(() => {
if (!mainWindow || mainWindow.isDestroyed()) return
try {
mainWindow.webContents.reload()
} catch (err) {
rememberLog(`[renderer] reload after crash failed: ${err?.message || err}`)
}
})
}
})
mainWindow.webContents.on('unresponsive', () => rememberLog('[renderer] webContents became unresponsive'))
// Electron always passes the event first. The canonical (Electron 36+) shape
// is (event, messageDetails); the deprecated positional shape is
// (event, level, message, line, sourceId). Handle both. `level` is numeric
// (0..3), where 3 === error.
mainWindow.webContents.on('console-message', (_event, detailsOrLevel, message, line, sourceId) => {
const details = detailsOrLevel && typeof detailsOrLevel === 'object' ? detailsOrLevel : null
const level = details ? details.level : detailsOrLevel
if (level !== 3) return
const text = details ? details.message : message
const src = details ? details.sourceUrl : sourceId
const lineNo = details ? details.lineNumber : line
rememberLog(`[renderer console] ${text} (${src}:${lineNo})`)
})
if (DEV_SERVER) {
mainWindow.loadURL(DEV_SERVER)
} else {
mainWindow.loadURL(pathToFileURL(resolveRendererIndex()).toString())
}
mainWindow.webContents.once('did-finish-load', () => {
broadcastBootProgress()
sendWindowStateChanged()
startHermes().catch(error => rememberLog(error.stack || error.message))
})
}
ipcMain.handle('hermes:connection', async (_event, profile) => ensureBackend(profile))
ipcMain.handle('hermes:backend:touch', async (_event, profile) => {
touchPoolBackend(profile)
return { ok: true }
})
ipcMain.handle('hermes:gateway:ws-url', async (_event, profile) => freshGatewayWsUrl(profile))
ipcMain.handle('hermes:bootstrap:reset', async () => {
// Renderer's "Reload and retry" path. Clear the latched failure and
// reset connection state so the next startHermes() call restarts the
// full backend flow (including a fresh runBootstrap pass).
rememberLog('[bootstrap] reset requested by renderer; clearing latched failure')
bootstrapFailure = null
connectionPromise = null
bootstrapState = {
active: false,
manifest: null,
stages: {},
error: null,
log: [],
startedAt: null,
completedAt: null,
unsupportedPlatform: null
}
return { ok: true }
})
ipcMain.handle('hermes:bootstrap:repair', async () => {
// Forceful repair: drop the bootstrap-complete marker so the next
// startHermes() re-runs the full installer (refreshing a broken/partial
// venv), and clear any latched failure + live connection. The renderer
// reloads afterwards to re-drive the boot flow from scratch.
rememberLog('[bootstrap] repair requested by renderer; clearing marker + latched failure')
try {
if (fileExists(BOOTSTRAP_COMPLETE_MARKER)) {
fs.rmSync(BOOTSTRAP_COMPLETE_MARKER, { force: true })
}
} catch (error) {
rememberLog(`[bootstrap] failed to remove marker during repair: ${error.message}`)
}
bootstrapFailure = null
resetHermesConnection()
return { ok: true }
})
ipcMain.handle('hermes:bootstrap:cancel', async () => {
// Renderer's Cancel button during first-launch install. Abort the running
// install script (SIGTERM via the runner's abortSignal). runBootstrap
// resolves with { cancelled: true }, which surfaces the recovery overlay.
if (bootstrapAbortController) {
try {
bootstrapAbortController.abort()
} catch {
void 0
}
return { ok: true, cancelled: true }
}
return { ok: false, cancelled: false }
})
ipcMain.handle('hermes:boot-progress:get', async () => bootProgressState)
ipcMain.handle('hermes:bootstrap:get', async () => getBootstrapState())
ipcMain.handle('hermes:connection-config:get', async () => sanitizeDesktopConnectionConfig())
ipcMain.handle('hermes:connection-config:test', async (_event, payload) => testDesktopConnectionConfig(payload))
ipcMain.handle('hermes:connection-config:probe', async (_event, rawUrl) => probeRemoteAuthMode(rawUrl))
ipcMain.handle('hermes:connection-config:oauth-login', async (_event, rawUrl) => {
// Open the gateway's OAuth login window and wait for the session cookie to
// land in the OAuth partition. The caller (settings UI) typically saves the
// remote config with authMode='oauth' first, then calls this. We normalize
// the URL defensively so a login can be driven from a raw URL too.
const baseUrl = normalizeRemoteBaseUrl(rawUrl)
await openOauthLoginWindow(baseUrl)
return { ok: true, baseUrl, connected: await hasOauthSessionCookie(baseUrl) }
})
ipcMain.handle('hermes:connection-config:oauth-logout', async (_event, rawUrl) => {
const baseUrl = rawUrl ? normalizeRemoteBaseUrl(rawUrl) : ''
await clearOauthSession(baseUrl || undefined)
return { ok: true, connected: baseUrl ? await hasOauthSessionCookie(baseUrl) : false }
})
ipcMain.handle('hermes:connection-config:save', async (_event, payload) => {
const config = coerceDesktopConnectionConfig(payload)
writeDesktopConnectionConfig(config)
return sanitizeDesktopConnectionConfig(config)
})
ipcMain.handle('hermes:connection-config:apply', async (_event, payload) => {
const config = coerceDesktopConnectionConfig(payload)
writeDesktopConnectionConfig(config)
await teardownPrimaryBackendAndWait()
mainWindow?.reload()
return sanitizeDesktopConnectionConfig(config)
})
ipcMain.handle('hermes:profile:get', async () => ({ profile: readActiveDesktopProfile() }))
ipcMain.handle('hermes:profile:set', async (_event, name) => {
const next = writeActiveDesktopProfile(name)
// Switching profiles is a backend re-home: relaunch the dashboard under the
// new HERMES_HOME. Pool backends keep their own homes, so only the primary
// is torn down.
await teardownPrimaryBackendAndWait()
mainWindow?.reload()
return { profile: next }
})
ipcMain.on('hermes:previewShortcutActive', (_event, active) => {
previewShortcutActive = Boolean(active)
})
ipcMain.handle('hermes:requestMicrophoneAccess', async () => {
if (!IS_MAC || typeof systemPreferences.askForMediaAccess !== 'function') {
return true
}
return systemPreferences.askForMediaAccess('microphone')
})
ipcMain.handle('hermes:api', async (_event, request) => {
const connection = await ensureBackend(request?.profile)
const timeoutMs = resolveTimeoutMs(request?.timeoutMs, DEFAULT_FETCH_TIMEOUT_MS)
const url = `${connection.baseUrl}${request.path}`
// OAuth gateways authenticate REST via the HttpOnly session cookie held in
// the OAuth partition — route through Electron's net stack bound to that
// session so the cookie attaches automatically. Token/local modes keep using
// the static session-token header.
if (connection.authMode === 'oauth') {
return fetchJsonViaOauthSession(url, {
method: request?.method,
body: request?.body,
timeoutMs
})
}
return fetchJson(url, connection.token, {
method: request?.method,
body: request?.body,
timeoutMs
})
})
ipcMain.handle('hermes:notify', (_event, payload) => {
if (!Notification.isSupported()) return false
new Notification({
title: payload?.title || 'Hermes',
body: payload?.body || '',
silent: Boolean(payload?.silent)
}).show()
return true
})
ipcMain.handle('hermes:readFileDataUrl', async (_event, filePath) => {
const { resolvedPath } = await resolveReadableFileForIpc(filePath, {
maxBytes: DATA_URL_READ_MAX_BYTES,
purpose: 'File preview'
})
const data = await fs.promises.readFile(resolvedPath)
return `data:${mimeTypeForPath(resolvedPath)};base64,${data.toString('base64')}`
})
ipcMain.handle('hermes:readFileText', async (_event, filePath) => {
const { resolvedPath, stat } = await resolveReadableFileForIpc(filePath, {
maxBytes: TEXT_PREVIEW_SOURCE_MAX_BYTES,
purpose: 'Text preview'
})
const ext = path.extname(resolvedPath).toLowerCase()
const handle = await fs.promises.open(resolvedPath, 'r')
const bytesToRead = Math.min(stat.size, TEXT_PREVIEW_MAX_BYTES)
try {
const buffer = Buffer.alloc(bytesToRead)
const { bytesRead } = await handle.read(buffer, 0, bytesToRead, 0)
return {
binary: looksBinary(buffer.subarray(0, Math.min(bytesRead, 4096))),
byteSize: stat.size,
language: PREVIEW_LANGUAGE_BY_EXT[ext] || 'text',
mimeType: mimeTypeForPath(resolvedPath),
path: resolvedPath,
text: buffer.subarray(0, bytesRead).toString('utf8'),
truncated: stat.size > TEXT_PREVIEW_MAX_BYTES
}
} finally {
await handle.close()
}
})
ipcMain.handle('hermes:selectPaths', async (_event, options = {}) => {
const properties = options?.directories ? ['openDirectory'] : ['openFile']
if (options?.multiple !== false) properties.push('multiSelections')
let resolvedDefaultPath
if (options?.defaultPath) {
try {
resolvedDefaultPath = path.resolve(String(options.defaultPath))
} catch {
resolvedDefaultPath = undefined
}
}
const result = await dialog.showOpenDialog(mainWindow, {
title: options?.title || 'Add context',
defaultPath: resolvedDefaultPath,
properties,
filters: Array.isArray(options?.filters) ? options.filters : undefined
})
if (result.canceled) return []
return result.filePaths
})
ipcMain.handle('hermes:writeClipboard', (_event, text) => {
clipboard.writeText(String(text || ''))
return true
})
ipcMain.handle('hermes:saveImageFromUrl', (_event, url) => saveImageFromUrl(String(url || '')))
ipcMain.handle('hermes:saveImageBuffer', async (_event, payload) => {
const data = payload?.data
if (!data) throw new Error('saveImageBuffer: missing data')
const buffer = Buffer.isBuffer(data) ? data : Buffer.from(data)
return writeComposerImage(buffer, payload?.ext || '.png')
})
ipcMain.handle('hermes:saveClipboardImage', async () => {
const image = clipboard.readImage()
if (!image || image.isEmpty()) {
return ''
}
return writeComposerImage(image.toPNG(), '.png')
})
ipcMain.handle('hermes:normalizePreviewTarget', (_event, target, baseDir) =>
normalizePreviewTarget(String(target || ''), baseDir ? String(baseDir) : '')
)
ipcMain.handle('hermes:watchPreviewFile', (_event, url) => watchPreviewFile(String(url || '')))
ipcMain.handle('hermes:stopPreviewFileWatch', (_event, id) => stopPreviewFileWatch(String(id || '')))
ipcMain.on('hermes:titlebar-theme', (_event, payload) => {
if (!payload || !isHexColor(payload.background) || !isHexColor(payload.foreground)) {
return
}
rendererTitleBarTheme = {
background: payload.background,
foreground: payload.foreground
}
mainWindow?.setTitleBarOverlay?.(getTitleBarOverlayOptions())
})
ipcMain.handle('hermes:openExternal', (_event, url) => {
if (!openExternalUrl(url)) {
throw new Error('Invalid external URL')
}
})
// User-configurable default project directory. The renderer reads this on
// settings mount and seeds the value into the picker; writing back persists
// it via writeDefaultProjectDir so resolveHermesCwd picks it up on the next
// session spawn (no app restart needed).
ipcMain.handle('hermes:setting:defaultProjectDir:get', async () => ({
dir: readDefaultProjectDir(),
defaultLabel: path.join(app.getPath('home'), 'hermes-projects')
}))
ipcMain.handle('hermes:setting:defaultProjectDir:set', async (_event, dir) => {
const next = typeof dir === 'string' && dir.trim() ? dir.trim() : null
if (next) {
try {
fs.mkdirSync(next, { recursive: true })
} catch (error) {
throw new Error(`Could not create directory: ${error.message}`)
}
}
writeDefaultProjectDir(next)
return { dir: next }
})
ipcMain.handle('hermes:setting:defaultProjectDir:pick', async () => {
const result = await dialog.showOpenDialog({
title: 'Choose default project directory',
properties: ['openDirectory', 'createDirectory'],
defaultPath: readDefaultProjectDir() || app.getPath('home')
})
if (result.canceled || result.filePaths.length === 0) {
return { canceled: true, dir: null }
}
return { canceled: false, dir: result.filePaths[0] }
})
ipcMain.handle('hermes:fetchLinkTitle', (_event, url) => fetchLinkTitle(url))
ipcMain.handle('hermes:logs:reveal', async () => {
try {
await fs.promises.mkdir(path.dirname(DESKTOP_LOG_PATH), { recursive: true })
if (!fileExists(DESKTOP_LOG_PATH)) {
await fs.promises.appendFile(DESKTOP_LOG_PATH, '')
}
shell.showItemInFolder(DESKTOP_LOG_PATH)
return { ok: true, path: DESKTOP_LOG_PATH }
} catch (error) {
return { ok: false, path: DESKTOP_LOG_PATH, error: error.message }
}
})
ipcMain.handle('hermes:logs:recent', async () => ({ path: DESKTOP_LOG_PATH, lines: hermesLog.slice(-200) }))
// Always-hidden noise (covers non-git projects too — gitignore would catch
// these anyway when present, but we want the same hygiene without one).
const FS_READDIR_HIDDEN = new Set([
'.git',
'.hg',
'.svn',
'.cache',
'.next',
'.turbo',
'.venv',
'__pycache__',
'build',
'dist',
'node_modules',
'target',
'venv'
])
function findGitRoot(start) {
let dir = start
for (let i = 0; i < 50; i += 1) {
try {
if (fs.existsSync(path.join(dir, '.git'))) {
return dir
}
} catch {
return null
}
const parent = path.dirname(dir)
if (parent === dir) {
return null
}
dir = parent
}
return null
}
function terminalShellCommand() {
if (IS_WINDOWS) {
return { args: [], command: process.env.COMSPEC || 'cmd.exe' }
}
const configuredShell = process.env.SHELL || ''
const shellPath =
(path.isAbsolute(configuredShell) && fs.existsSync(configuredShell) && configuredShell) ||
['/bin/zsh', '/bin/bash', '/bin/sh'].find(candidate => fs.existsSync(candidate)) ||
'/bin/sh'
const shellName = path.basename(shellPath)
const interactiveArgs = shellName.includes('zsh') || shellName.includes('bash') ? ['-il'] : ['-i']
return { args: interactiveArgs, command: shellPath, name: shellName }
}
function safeTerminalCwd(cwd) {
const candidate = path.resolve(String(cwd || app.getPath('home')))
try {
const stat = fs.statSync(candidate)
return stat.isDirectory() ? candidate : path.dirname(candidate)
} catch {
return app.getPath('home')
}
}
function terminalShellEnv() {
const env = { ...process.env }
// Electron is commonly launched through `npm run dev`; do not leak npm's
// managed prefix into a user's interactive shell (nvm/proto warn loudly).
for (const key of Object.keys(env)) {
if (key === 'npm_config_prefix' || key.startsWith('npm_config_') || key.startsWith('npm_package_')) {
delete env[key]
}
}
// Strip color/theme-detection vars that ride along when Electron is launched
// from a non-tty agent shell (Cursor's runner sets NO_COLOR/FORCE_COLOR=0
// /TERM=dumb; some terminals set COLORFGBG which would flip Hermes' TUI into
// light-mode). Our PTY is a real xterm-compat terminal — force truecolor.
delete env.NO_COLOR
delete env.FORCE_COLOR
delete env.COLORFGBG
env.COLORTERM = 'truecolor'
env.LC_CTYPE = env.LC_CTYPE || 'UTF-8'
env.TERM = 'xterm-256color'
env.TERM_PROGRAM = 'Hermes'
env.TERM_PROGRAM_VERSION = app.getVersion()
return env
}
function terminalChannel(id, suffix) {
return `hermes:terminal:${id}:${suffix}`
}
function disposeTerminalSession(id) {
const sessionInfo = terminalSessions.get(id)
if (!sessionInfo) {
return false
}
terminalSessions.delete(id)
try {
sessionInfo.pty.kill()
} catch {
// Process may already be gone.
}
return true
}
ipcMain.handle('hermes:fs:readDir', async (_event, dirPath) => {
const resolved = path.resolve(String(dirPath || ''))
if (!resolved) {
return { entries: [], error: 'invalid-path' }
}
try {
const dirents = await fs.promises.readdir(resolved, { withFileTypes: true })
const entries = dirents
.filter(d => {
if (FS_READDIR_HIDDEN.has(d.name)) {
return false
}
return true
})
.map(d => ({ name: d.name, path: path.join(resolved, d.name), isDirectory: d.isDirectory() }))
.sort((a, b) => Number(b.isDirectory) - Number(a.isDirectory) || a.name.localeCompare(b.name))
return { entries }
} catch (error) {
return { entries: [], error: error?.code || 'read-error' }
}
})
ipcMain.handle('hermes:fs:gitRoot', async (_event, startPath) => {
const input = String(startPath || '')
const resolved = input.startsWith('file:') ? fileURLToPath(input) : path.resolve(input)
try {
const stat = await fs.promises.stat(resolved)
const start = stat.isDirectory() ? resolved : path.dirname(resolved)
return findGitRoot(start)
} catch {
return findGitRoot(resolved)
}
})
ipcMain.handle('hermes:terminal:start', async (event, payload = {}) => {
if (!nodePty) {
throw new Error('PTY support is unavailable. Reinstall desktop dependencies and restart Hermes.')
}
const id = crypto.randomUUID()
const { args, command, name } = terminalShellCommand()
const cwd = safeTerminalCwd(payload?.cwd)
const cols = Math.max(2, Number.parseInt(String(payload?.cols || 80), 10) || 80)
const rows = Math.max(2, Number.parseInt(String(payload?.rows || 24), 10) || 24)
const ptyProcess = nodePty.spawn(command, args, {
cols,
cwd,
env: terminalShellEnv(),
name: 'xterm-256color',
rows
})
terminalSessions.set(id, { pty: ptyProcess, webContentsId: event.sender.id })
const send = (suffix, payload) => {
if (event.sender.isDestroyed()) {
return
}
event.sender.send(terminalChannel(id, suffix), payload)
}
ptyProcess.onData(data => send('data', data))
ptyProcess.onExit(({ exitCode, signal }) => {
terminalSessions.delete(id)
send('exit', { code: exitCode, signal: signal || null })
})
event.sender.once('destroyed', () => disposeTerminalSession(id))
return { cwd, id, shell: name }
})
ipcMain.handle('hermes:terminal:write', (_event, id, data) => {
const sessionInfo = terminalSessions.get(String(id || ''))
if (!sessionInfo) {
return false
}
sessionInfo.pty.write(String(data || ''))
return true
})
ipcMain.handle('hermes:terminal:resize', (_event, id, size = {}) => {
const sessionInfo = terminalSessions.get(String(id || ''))
if (!sessionInfo) {
return false
}
const cols = Math.max(2, Number.parseInt(String(size?.cols || 80), 10) || 80)
const rows = Math.max(2, Number.parseInt(String(size?.rows || 24), 10) || 24)
sessionInfo.pty.resize(cols, rows)
return true
})
ipcMain.handle('hermes:terminal:dispose', (_event, id) => disposeTerminalSession(String(id || '')))
ipcMain.handle('hermes:updates:check', async () =>
checkUpdates().catch(error => ({
supported: true,
branch: readDesktopUpdateConfig().branch,
error: 'check-failed',
message: error?.message || String(error),
fetchedAt: Date.now()
}))
)
ipcMain.handle('hermes:updates:apply', async (_event, payload) =>
applyUpdates(payload || {}).catch(error => ({
ok: false,
error: 'apply-failed',
message: error?.message || String(error)
}))
)
ipcMain.handle('hermes:updates:branch:get', async () => readDesktopUpdateConfig())
ipcMain.handle('hermes:updates:branch:set', async (_event, name) => {
const branch = typeof name === 'string' && name.trim() ? name.trim() : DEFAULT_UPDATE_BRANCH
writeDesktopUpdateConfig({ branch })
return { branch }
})
// Resolve the canonical Hermes version (the one `release.py` bumps in
// hermes_cli/__init__.py + pyproject.toml) so the desktop About panel shows the
// real Hermes version instead of the Electron app's own package.json version,
// which historically drifted (stuck at 0.0.2). Falls back to app.getVersion()
// when the source tree can't be read (e.g. a packaged build without the repo).
function resolveHermesVersion() {
try {
const root = resolveUpdateRoot()
const initPath = path.join(root, 'hermes_cli', '__init__.py')
if (fileExists(initPath)) {
const raw = fs.readFileSync(initPath, 'utf8')
const match = raw.match(/__version__\s*=\s*["']([^"']+)["']/)
if (match) {
return match[1]
}
}
} catch {
// Fall through to the Electron app version below.
}
return app.getVersion()
}
ipcMain.handle('hermes:version', async () => ({
appVersion: resolveHermesVersion(),
electronVersion: process.versions.electron,
nodeVersion: process.versions.node,
platform: process.platform,
hermesRoot: resolveUpdateRoot()
}))
app.whenReady().then(() => {
if (IS_MAC) {
Menu.setApplicationMenu(buildApplicationMenu())
} else {
Menu.setApplicationMenu(null)
}
installMediaPermissions()
registerMediaProtocol()
ensureWslWindowsFonts()
configureSpellChecker()
registerPowerResumeListeners()
createWindow()
app.on('activate', () => {
if (BrowserWindow.getAllWindows().length === 0) createWindow()
})
})
// Seed Chromium's spellchecker with the system locale (falling back to en-US).
// On macOS Electron uses the native spellchecker which ignores this list, but
// on Windows/Linux Chromium downloads Hunspell dictionaries on demand and
// won't enable any without an explicit language.
function configureSpellChecker() {
try {
const defaultSession = session.defaultSession
if (!defaultSession || typeof defaultSession.setSpellCheckerLanguages !== 'function') {
return
}
const available = defaultSession.availableSpellCheckerLanguages || []
const locale = (app.getLocale && app.getLocale()) || 'en-US'
const candidates = [locale, locale.split('-')[0], 'en-US', 'en']
const chosen = candidates.find(lang => available.includes(lang)) || 'en-US'
defaultSession.setSpellCheckerLanguages([chosen])
} catch (error) {
rememberLog(`Spellchecker setup failed: ${error.message}`)
}
}
app.on('before-quit', () => {
// Quitting mid-install should stop the installer, not orphan it.
if (bootstrapAbortController) {
try {
bootstrapAbortController.abort()
} catch {
void 0
}
}
if (desktopLogFlushTimer) {
clearTimeout(desktopLogFlushTimer)
desktopLogFlushTimer = null
}
flushDesktopLogBufferSync()
closePreviewWatchers()
if (hermesProcess && !hermesProcess.killed) {
hermesProcess.kill('SIGTERM')
}
stopAllPoolBackends()
})
app.on('window-all-closed', () => {
if (process.platform !== 'darwin') app.quit()
})