feat(tauri): support self-signed remote HTTPS via server-backed proxy (#333)

## Summary

- add a server-backed HTTPS proxy flow for Tauri remote windows so
self-signed remote HTTPS works with the local CLI TLS assets and desktop
auth/cookie handling
- manage remote proxy sessions through `packages/server` with
per-session bootstrap, local-only cleanup, and explicit session
lifecycle handling
- support the Tauri desktop flow across environments, including packaged
Windows builds, `tauri dev`, and updated Linux/macOS handling for the
new local HTTPS proxy path

## Testing

- `npm run build --workspace @neuralnomads/codenomad`
- `cargo check`
- `npm run build --workspace @codenomad/tauri-app`
- Windows smoke test for concurrent remote proxy bootstrap sessions
- Windows manual validation of packaged Tauri remote connection flow

## Notes

- Windows was validated end-to-end.
- Linux and macOS code paths were updated for the new proxy flow, but
runtime validation on those platforms is still pending.

---------

Co-authored-by: Shantur Rathore <i@shantur.com>
This commit is contained in:
Pascal André
2026-04-20 00:26:55 +02:00
committed by GitHub
parent 623a09fd7e
commit 04fc28c492
20 changed files with 4921 additions and 88 deletions

View File

@@ -337,6 +337,16 @@ export interface RemoteServerProbeResponse {
errorCode?: string
}
export interface RemoteProxySessionCreateRequest {
baseUrl: string
skipTlsVerify?: boolean
}
export interface RemoteProxySessionCreateResponse {
sessionId: string
windowUrl: string
}
export type WorkspaceEventType =
| "workspace.created"
| "workspace.started"

View File

@@ -21,6 +21,7 @@ import { launchInBrowser } from "./launcher"
import { resolveUi } from "./ui/remote-ui"
import { AuthManager, BOOTSTRAP_TOKEN_STDOUT_PREFIX, DEFAULT_AUTH_COOKIE_NAME, DEFAULT_AUTH_USERNAME } from "./auth/manager"
import { resolveHttpsOptions } from "./server/tls"
import { RemoteProxySessionManager } from "./server/remote-proxy"
import { resolveNetworkAddresses, resolveRemoteAddresses } from "./server/network-addresses"
import { startDevReleaseMonitor } from "./releases/dev-release-monitor"
import { SpeechService } from "./speech/service"
@@ -375,14 +376,15 @@ async function main() {
})
: null
if (uiResolution.uiDevServerUrl && options.https) {
throw new InvalidArgumentError("UI dev proxy is only supported with --https=false --http=true")
}
const remoteAccessEnabled = options.host === "0.0.0.0" || !isLoopbackHost(options.host)
const clientConnectionManager = new ClientConnectionManager(logger.child({ component: "client-connections" }))
const pluginChannel = new PluginChannelManager(logger.child({ component: "plugin-channel" }))
const remoteProxySessionManager = new RemoteProxySessionManager({
authManager,
logger: logger.child({ component: "remote-proxy" }),
httpsOptions: tlsResolution?.httpsOptions,
})
const voiceModeManager = new VoiceModeManager({
connections: clientConnectionManager,
channel: pluginChannel,
@@ -422,6 +424,7 @@ async function main() {
clientConnectionManager,
pluginChannel,
voiceModeManager,
remoteProxySessionManager,
uiStaticDir: uiResolution.uiStaticDir ?? DEFAULT_UI_STATIC_DIR,
uiDevServerUrl: uiResolution.uiDevServerUrl,
logger,
@@ -447,6 +450,7 @@ async function main() {
clientConnectionManager,
pluginChannel,
voiceModeManager,
remoteProxySessionManager,
uiStaticDir: uiResolution.uiStaticDir ?? DEFAULT_UI_STATIC_DIR,
uiDevServerUrl: undefined,
logger,

View File

@@ -0,0 +1,248 @@
import assert from "node:assert/strict"
import { after, afterEach, describe, it } from "node:test"
import fs from "node:fs"
import http, { type IncomingMessage, type ServerResponse } from "node:http"
import os from "node:os"
import path from "node:path"
import { Agent, fetch } from "undici"
import type { AuthManager } from "../../auth/manager"
import type { Logger } from "../../logger"
import { RemoteProxySessionManager } from "../remote-proxy"
import { resolveHttpsOptions } from "../tls"
const sharedTempDir = fs.mkdtempSync(path.join(os.tmpdir(), "codenomad-remote-proxy-test-"))
const sharedTls = resolveHttpsOptions({
enabled: true,
configDir: sharedTempDir,
host: "127.0.0.1",
logger: createStubLogger(),
})
if (!sharedTls) {
throw new Error("Failed to generate HTTPS options for remote proxy tests")
}
const sharedHttpsOptions = sharedTls.httpsOptions
const httpsDispatcher = new Agent({ connect: { rejectUnauthorized: false } })
const managers = new Set<RemoteProxySessionManager>()
afterEach(async () => {
for (const manager of managers) {
await disposeManager(manager)
}
managers.clear()
})
after(() => {
fs.rmSync(sharedTempDir, { recursive: true, force: true })
httpsDispatcher.close().catch(() => {})
})
describe("RemoteProxySessionManager", () => {
it("blocks proxying before activation and keeps bootstrap tokens scoped per session", async () => {
await withUpstreamServer(async (upstreamBaseUrl) => {
const manager = createSessionManager()
const session1 = await createSession(manager, `${upstreamBaseUrl}/base`)
const session2 = await createSession(manager, `${upstreamBaseUrl}/base`)
const blocked = await proxyFetch(`${session1.proxyOrigin}/status`)
assert.equal(blocked.status, 403)
const wrongTokenResponse = await proxyFetch(`${session1.proxyOrigin}/__codenomad/api/auth/token`, {
method: "POST",
headers: { "content-type": "application/json" },
body: JSON.stringify({ token: session2.token }),
})
assert.equal(wrongTokenResponse.status, 401)
assert.equal(await activateSession(session1), true)
assert.equal(await activateSession(session2), true)
}, (req, res) => {
res.writeHead(200, { "content-type": "text/plain" })
res.end(req.url ?? "")
})
})
it("preserves remote base paths and rewrites same-origin redirects to the local proxy origin", async () => {
await withUpstreamServer(async (upstreamBaseUrl) => {
const manager = createSessionManager()
const session = await createSession(manager, `${upstreamBaseUrl}/base`)
await activateSession(session)
const apiResponse = await proxyFetch(`${session.proxyOrigin}/api/auth/status?foo=bar`)
assert.equal(apiResponse.status, 200)
assert.equal(await apiResponse.text(), "/base/api/auth/status?foo=bar")
const redirectResponse = await proxyFetch(`${session.proxyOrigin}/redirect`, { redirect: "manual" })
assert.equal(redirectResponse.status, 302)
assert.equal(redirectResponse.headers.get("location"), `${session.proxyOrigin}/base/after?ok=1`)
}, (req, res) => {
const requestUrl = req.url ?? ""
if (requestUrl === "/base/redirect") {
res.writeHead(302, { location: "/base/after?ok=1" })
res.end()
return
}
res.writeHead(200, { "content-type": "text/plain" })
res.end(requestUrl)
})
})
it("rewrites set-cookie names for the proxy and restores cookie names on proxied requests", async () => {
await withUpstreamServer(async (upstreamBaseUrl) => {
const manager = createSessionManager()
const session = await createSession(manager, `${upstreamBaseUrl}/base`)
await activateSession(session)
const loginResponse = await proxyFetch(`${session.proxyOrigin}/login`)
assert.equal(loginResponse.status, 200)
const setCookie = getSetCookie(loginResponse)[0]
assert.match(setCookie, /^cnrp_[0-9a-f]+_session=abc123/i)
assert.doesNotMatch(setCookie, /domain=/i)
const cookieHeader = setCookie.split(";", 1)[0]
const whoamiResponse = await proxyFetch(`${session.proxyOrigin}/whoami`, {
headers: { cookie: cookieHeader },
})
assert.equal(await whoamiResponse.text(), "session=abc123")
}, (req, res) => {
const requestUrl = req.url ?? ""
if (requestUrl === "/base/login") {
res.writeHead(200, {
"content-type": "text/plain",
"set-cookie": "session=abc123; Path=/; Secure; HttpOnly; Domain=127.0.0.1",
})
res.end("ok")
return
}
if (requestUrl === "/base/whoami") {
res.writeHead(200, { "content-type": "text/plain" })
res.end(req.headers.cookie ?? "")
return
}
res.writeHead(404, { "content-type": "text/plain" })
res.end(requestUrl)
})
})
it("supports explicit deletion and idle cleanup of sessions", async () => {
await withUpstreamServer(async (upstreamBaseUrl) => {
const manager = createSessionManager()
const session = await createSession(manager, `${upstreamBaseUrl}/base`)
assert.equal(await manager.deleteSession(session.sessionId), true)
assert.equal(await manager.deleteSession(session.sessionId), false)
const session3 = await createSession(manager, `${upstreamBaseUrl}/base`)
const internalSessions = (manager as any).sessions as Map<string, { lastAccessAt: number }>
const internalCleanup = (manager as any).cleanupExpiredSessions as () => Promise<void>
internalSessions.get(session3.sessionId)!.lastAccessAt = Date.now() - 31 * 60_000
await internalCleanup.call(manager)
assert.equal(internalSessions.has(session3.sessionId), false)
assert.equal(await manager.deleteSession(session3.sessionId), false)
}, (_req, res) => {
res.writeHead(200, { "content-type": "text/plain" })
res.end("ok")
})
})
})
function createSessionManager() {
const manager = new RemoteProxySessionManager({
authManager: {
isLoopbackRequest: () => true,
} as unknown as AuthManager,
logger: createStubLogger(),
httpsOptions: sharedHttpsOptions,
})
managers.add(manager)
return manager
}
async function createSession(manager: RemoteProxySessionManager, baseUrl: string) {
const created = await manager.createSession(baseUrl, false)
const windowUrl = new URL(created.windowUrl)
return {
sessionId: created.sessionId,
windowUrl,
proxyOrigin: windowUrl.origin,
token: decodeURIComponent(windowUrl.hash.replace(/^#/, "")),
}
}
async function activateSession(session: { proxyOrigin: string; token: string }) {
const response = await proxyFetch(`${session.proxyOrigin}/__codenomad/api/auth/token`, {
method: "POST",
headers: { "content-type": "application/json" },
body: JSON.stringify({ token: session.token }),
})
if (!response.ok) {
return false
}
const body = (await response.json()) as { ok?: boolean }
return body.ok === true
}
function getSetCookie(response: Awaited<ReturnType<typeof fetch>>): string[] {
const values = (response.headers as any).getSetCookie?.() as string[] | undefined
if (Array.isArray(values) && values.length > 0) {
return values
}
const fallback = response.headers.get("set-cookie")
return fallback ? [fallback] : []
}
async function proxyFetch(url: string, init?: Parameters<typeof fetch>[1]) {
return fetch(url, { dispatcher: httpsDispatcher, ...init })
}
async function disposeManager(manager: RemoteProxySessionManager) {
const sessions = Array.from(((manager as any).sessions as Map<string, unknown>).keys())
for (const sessionId of sessions) {
await manager.deleteSession(sessionId)
}
clearInterval((manager as any).cleanupTimer as NodeJS.Timeout)
}
async function withUpstreamServer(
callback: (baseUrl: string) => Promise<void>,
handler: (req: IncomingMessage, res: ServerResponse<IncomingMessage>) => void,
) {
const server = http.createServer(handler)
await new Promise<void>((resolve) => server.listen(0, "127.0.0.1", () => resolve()))
try {
const address = server.address()
if (!address || typeof address === "string") {
throw new Error("Failed to resolve upstream server address")
}
await callback(`http://127.0.0.1:${address.port}`)
} finally {
await new Promise<void>((resolve, reject) => server.close((error) => (error ? reject(error) : resolve())))
}
}
function createStubLogger(): Logger {
const logger = {
info() {},
warn() {},
error() {},
child() {
return logger
},
}
return logger as unknown as Logger
}

View File

@@ -26,6 +26,7 @@ import { registerBackgroundProcessRoutes } from "./routes/background-processes"
import { registerWorktreeRoutes } from "./routes/worktrees"
import { registerSpeechRoutes } from "./routes/speech"
import { registerRemoteServerRoutes } from "./routes/remote-servers"
import { registerRemoteProxyRoutes } from "./routes/remote-proxy"
import { registerSideCarRoutes } from "./routes/sidecars"
import { ServerMeta } from "../api-types"
import { InstanceStore } from "../storage/instance-store"
@@ -38,6 +39,7 @@ import { ClientConnectionManager } from "../clients/connection-manager"
import { PluginChannelManager } from "../plugins/channel"
import { VoiceModeManager } from "../plugins/voice-mode"
import type { SideCarManager } from "../sidecars/manager"
import type { RemoteProxySessionManager } from "./remote-proxy"
interface HttpServerDeps {
bindHost: string
@@ -58,6 +60,7 @@ interface HttpServerDeps {
clientConnectionManager: ClientConnectionManager
pluginChannel: PluginChannelManager
voiceModeManager: VoiceModeManager
remoteProxySessionManager: RemoteProxySessionManager
uiStaticDir: string
uiDevServerUrl?: string
logger: Logger
@@ -199,7 +202,12 @@ export function createHttpServer(deps: HttpServerDeps) {
publicPagePaths.add("/auth/token")
}
if (publicApiPaths.has(pathname) || publicPagePaths.has(pathname)) {
const isLoopbackRemoteProxyDelete =
request.method === "DELETE" &&
pathname.startsWith("/api/remote-proxy/sessions/") &&
deps.authManager.isLoopbackRequest(request)
if (publicApiPaths.has(pathname) || publicPagePaths.has(pathname) || isLoopbackRemoteProxyDelete) {
done()
return
}
@@ -274,6 +282,7 @@ export function createHttpServer(deps: HttpServerDeps) {
workspaceManager: deps.workspaceManager,
})
registerRemoteServerRoutes(app, { logger: apiLogger })
registerRemoteProxyRoutes(app, { logger: proxyLogger, sessionManager: deps.remoteProxySessionManager })
registerSpeechRoutes(app, { speechService: deps.speechService })
registerSideCarRoutes(app, { sidecarManager: deps.sidecarManager })
registerSideCarProxyRoutes(app, { sidecarManager: deps.sidecarManager, logger: proxyLogger })

View File

@@ -0,0 +1,566 @@
import Fastify, { type FastifyInstance, type FastifyReply, type FastifyRequest } from "fastify"
import { randomBytes, randomUUID } from "crypto"
import { Readable } from "stream"
import { pipeline } from "stream/promises"
import { Agent, fetch } from "undici"
import type { AuthManager } from "../auth/manager"
import type { Logger } from "../logger"
const LOOPBACK_HOST = "127.0.0.1"
const BOOTSTRAP_PAGE_PATH = "/__codenomad/auth/token"
const BOOTSTRAP_EXCHANGE_PATH = "/__codenomad/api/auth/token"
const SESSION_IDLE_TTL_MS = 30 * 60_000
interface RemoteProxySession {
id: string
bootstrapToken: string
targetBaseUrl: URL
skipTlsVerify: boolean
localBaseUrl: URL
entryUrl: URL
bootstrapUrl: string
activated: boolean
cookiePrefix: string
app: FastifyInstance
dispatcher?: Agent
createdAt: number
lastAccessAt: number
}
export interface RemoteProxySessionManagerOptions {
authManager: AuthManager
logger: Logger
httpsOptions?: { key: string | Buffer; cert: string | Buffer; ca?: string | Buffer }
}
export interface RemoteProxySessionCreateResult {
sessionId: string
windowUrl: string
}
export class RemoteProxySessionManager {
private readonly sessions = new Map<string, RemoteProxySession>()
private readonly cleanupTimer: NodeJS.Timeout
constructor(private readonly options: RemoteProxySessionManagerOptions) {
this.cleanupTimer = setInterval(() => {
void this.cleanupExpiredSessions()
}, 60_000)
this.cleanupTimer.unref()
}
async createSession(baseUrl: string, skipTlsVerify: boolean): Promise<RemoteProxySessionCreateResult> {
if (!this.options.httpsOptions) {
throw new Error("Local HTTPS is required for remote proxy sessions")
}
const targetBaseUrl = normalizeBaseUrl(baseUrl)
const sessionId = randomUUID()
const bootstrapToken = randomBytes(32).toString("base64url")
const dispatcher = skipTlsVerify ? new Agent({ connect: { rejectUnauthorized: false } }) : undefined
const app = Fastify({ logger: false, https: this.options.httpsOptions })
let session: RemoteProxySession | null = null
app.removeAllContentTypeParsers()
// Preserve raw request bodies for proxying while still letting token JSON parse from Buffer.
app.addContentTypeParser("*", { parseAs: "buffer" }, (_req, body, done) => done(null, body))
app.get(BOOTSTRAP_PAGE_PATH, async (request, reply) => {
if (!this.options.authManager.isLoopbackRequest(request)) {
reply.code(404).send({ error: "Not found" })
return
}
reply.header("Cache-Control", "no-store")
reply.header("Pragma", "no-cache")
reply.header("Expires", "0")
reply.type("text/html").send(buildBootstrapPageHtml())
})
app.post(BOOTSTRAP_EXCHANGE_PATH, async (request, reply) => {
if (!this.options.authManager.isLoopbackRequest(request)) {
reply.code(404).send({ error: "Not found" })
return
}
if (!session) {
reply.code(503).send({ error: "Remote proxy session is unavailable" })
return
}
const body = parseTokenBody(request.body)
if (body.token !== session.bootstrapToken) {
reply.code(401).send({ error: "Invalid token" })
return
}
session.activated = true
session.lastAccessAt = Date.now()
reply.send({ ok: true })
})
app.all("/*", async (request, reply) => {
if (!session) {
reply.code(503).send({ error: "Remote proxy session is unavailable" })
return
}
if (!session.activated) {
reply.code(403).send({ error: "Remote proxy session is not activated" })
return
}
session.lastAccessAt = Date.now()
await proxyRequest({ request, reply, session, logger: this.options.logger })
})
app.setNotFoundHandler(async (request, reply) => {
if (!session) {
reply.code(503).send({ error: "Remote proxy session is unavailable" })
return
}
if (!session.activated) {
reply.code(403).send({ error: "Remote proxy session is not activated" })
return
}
session.lastAccessAt = Date.now()
await proxyRequest({ request, reply, session, logger: this.options.logger })
})
const addressInfo = await app.listen({ host: LOOPBACK_HOST, port: 0 })
const address = new URL(addressInfo)
const localBaseUrl = new URL(`https://${LOOPBACK_HOST}:${address.port}`)
const entryUrl = new URL(targetBaseUrl.pathname || "/", localBaseUrl)
const returnTo = buildReturnToTarget(entryUrl)
session = {
id: sessionId,
bootstrapToken,
targetBaseUrl,
skipTlsVerify,
localBaseUrl,
entryUrl,
bootstrapUrl: `${localBaseUrl.origin}${BOOTSTRAP_PAGE_PATH}?returnTo=${encodeURIComponent(returnTo)}#${encodeURIComponent(bootstrapToken)}`,
activated: false,
cookiePrefix: `cnrp_${randomBytes(6).toString("hex")}_`,
app,
dispatcher,
createdAt: Date.now(),
lastAccessAt: Date.now(),
}
this.sessions.set(sessionId, session)
this.options.logger.info(
{ sessionId, targetBaseUrl: targetBaseUrl.toString(), localBaseUrl: localBaseUrl.toString() },
"Created remote proxy session",
)
return { sessionId, windowUrl: session.bootstrapUrl }
}
async deleteSession(sessionId: string): Promise<boolean> {
return this.disposeSession(sessionId)
}
private async cleanupExpiredSessions() {
const now = Date.now()
for (const session of Array.from(this.sessions.values())) {
if (now - session.lastAccessAt <= SESSION_IDLE_TTL_MS) {
continue
}
await this.disposeSession(session.id)
}
}
private async disposeSession(sessionId: string): Promise<boolean> {
const session = this.sessions.get(sessionId)
if (!session) {
return false
}
this.sessions.delete(sessionId)
session.dispatcher?.close().catch(() => {})
await session.app.close().catch(() => {})
this.options.logger.info({ sessionId }, "Disposed remote proxy session")
return true
}
}
function normalizeBaseUrl(input: string): URL {
const parsed = new URL(input.trim())
if (parsed.protocol !== "http:" && parsed.protocol !== "https:") {
throw new Error("Server URL must use http:// or https://")
}
parsed.hash = ""
parsed.search = ""
parsed.pathname = parsed.pathname === "/" ? "/" : parsed.pathname.replace(/\/+$/, "") || "/"
return parsed
}
function buildReturnToTarget(entryUrl: URL): string {
const query = entryUrl.search ? entryUrl.search : ""
return `${entryUrl.pathname || "/"}${query}`
}
function buildBootstrapPageHtml(): string {
return `<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<title>CodeNomad</title>
<style>
body { font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial; background: #0b0b0f; color: #fff; display: flex; align-items: center; justify-content: center; height: 100vh; margin: 0; }
.card { width: 420px; max-width: calc(100vw - 32px); background: #14141c; border: 1px solid rgba(255,255,255,0.08); border-radius: 14px; padding: 24px; }
h1 { font-size: 18px; margin: 0 0 12px; }
p { margin: 0; color: rgba(255,255,255,0.7); font-size: 13px; line-height: 1.4; }
.error { margin-top: 12px; color: #ff6b6b; font-size: 13px; display: none; }
</style>
</head>
<body>
<div class="card">
<h1>Connecting...</h1>
<p>Finalizing local authentication.</p>
<div id="error" class="error"></div>
</div>
<script>
const token = decodeURIComponent((location.hash || "").replace(/^#/, "").trim())
const params = new URLSearchParams(location.search)
const returnTo = sanitizeReturnTo(params.get("returnTo"))
const errorEl = document.getElementById("error")
function sanitizeReturnTo(value) {
if (!value || typeof value !== "string") return "/"
if (!value.startsWith("/")) return "/"
if (value.startsWith("//")) return "/"
return value
}
function showError(message) {
errorEl.textContent = message
errorEl.style.display = "block"
}
async function run() {
if (!token) {
showError("Missing bootstrap token.")
return
}
try {
const res = await fetch("${BOOTSTRAP_EXCHANGE_PATH}", {
method: "POST",
headers: { "Content-Type": "application/json" },
body: JSON.stringify({ token }),
credentials: "include",
})
if (!res.ok) {
let message = ""
try {
const json = await res.json()
message = json && json.error ? String(json.error) : ""
} catch {
message = ""
}
showError(message || "Token exchange failed (" + res.status + ")")
return
}
window.location.replace(returnTo)
} catch (error) {
showError(error && error.message ? error.message : String(error))
}
}
run()
</script>
</body>
</html>`
}
function parseTokenBody(body: unknown): { token: string } {
const value = normalizeJsonBody(body) as { token?: unknown } | null | undefined
const token = typeof value?.token === "string" ? value.token.trim() : ""
if (!token) {
throw new Error("Missing bootstrap token")
}
return { token }
}
function normalizeJsonBody(body: unknown): unknown {
if (Buffer.isBuffer(body)) {
return JSON.parse(body.toString("utf-8"))
}
if (typeof body === "string") {
return JSON.parse(body)
}
return body
}
function toRequestBody(body: unknown): any {
if (body == null) {
return undefined
}
if (Buffer.isBuffer(body) || typeof body === "string" || body instanceof Uint8Array) {
return body
}
return JSON.stringify(body)
}
async function proxyRequest(args: {
request: FastifyRequest
reply: FastifyReply
session: RemoteProxySession
logger: Logger
}) {
const { request, reply, session, logger } = args
const upstreamUrl = buildUpstreamUrl(session.targetBaseUrl, request.raw.url ?? request.url)
const headers = filterRequestHeaders(request.headers, session)
const init: any = {
method: request.method,
headers,
dispatcher: session.dispatcher,
redirect: "manual",
}
if (request.method !== "GET" && request.method !== "HEAD") {
const body = toRequestBody(request.body)
if (body !== undefined) {
init.body = body
init.duplex = "half"
}
}
try {
const response = await fetch(upstreamUrl, init as any)
reply.code(response.status)
applyResponseHeaders(reply, response, session)
if (!response.body || request.method === "HEAD") {
reply.send()
return
}
reply.hijack()
reply.raw.writeHead(reply.statusCode, toOutgoingHeaders(reply.getHeaders()))
await pipeline(Readable.fromWeb(response.body as any), reply.raw)
} catch (error) {
logger.error({ err: error, upstreamUrl }, "Failed to proxy remote session request")
if (!reply.sent) {
reply.code(502).send({ error: "Remote proxy request failed" })
}
}
}
function buildUpstreamUrl(baseUrl: URL, rawUrl: string): string {
const parsed = new URL(rawUrl, "https://localhost")
const url = new URL(baseUrl.toString())
url.pathname = rewriteRequestPath(baseUrl, parsed.pathname)
url.search = stripInternalQuery(parsed.search)
url.hash = ""
return url.toString()
}
function rewriteRequestPath(baseUrl: URL, requestPath: string): string {
const basePath = normalizedBasePath(baseUrl)
if (basePath === "/") {
return requestPath
}
if (requestPath === "/") {
return basePath
}
if (pathHasBasePrefix(basePath, requestPath)) {
return requestPath
}
return `${basePath}${requestPath}`
}
function normalizedBasePath(baseUrl: URL): string {
return baseUrl.pathname || "/"
}
function pathHasBasePrefix(basePath: string, requestPath: string): boolean {
return requestPath === basePath || requestPath.startsWith(`${basePath}/`)
}
function stripInternalQuery(search: string): string {
if (!search || search === "?") {
return ""
}
return search
}
function filterRequestHeaders(
headers: FastifyRequest["headers"],
session: RemoteProxySession,
): Record<string, string> {
const next: Record<string, string> = {}
for (const [key, value] of Object.entries(headers ?? {})) {
if (!value) continue
const lower = key.toLowerCase()
if (
isHopByHopHeader(lower) ||
lower === "host" ||
lower === "content-length" ||
lower === "accept-encoding"
) {
continue
}
if (lower === "origin") {
next[key] = session.targetBaseUrl.origin
continue
}
if (lower === "referer") {
const rewritten = rewriteRefererHeader(Array.isArray(value) ? value[0] : value, session.targetBaseUrl)
if (rewritten) {
next[key] = rewritten
}
continue
}
if (lower === "cookie") {
const rewritten = rewriteRequestCookieHeader(Array.isArray(value) ? value.join("; ") : value, session.cookiePrefix)
if (rewritten) {
next[key] = rewritten
}
continue
}
next[key] = Array.isArray(value) ? value.join(",") : value
}
next.host = session.targetBaseUrl.port ? `${session.targetBaseUrl.hostname}:${session.targetBaseUrl.port}` : session.targetBaseUrl.hostname
if (!next.origin) {
next.origin = session.targetBaseUrl.origin
}
return next
}
function rewriteRefererHeader(referer: string | undefined, targetBaseUrl: URL): string | null {
if (!referer) {
return null
}
try {
const parsed = new URL(referer)
const rewritten = new URL(targetBaseUrl.toString())
rewritten.pathname = rewriteRequestPath(targetBaseUrl, parsed.pathname)
rewritten.search = parsed.search
rewritten.hash = parsed.hash
return rewritten.toString()
} catch {
return null
}
}
function applyResponseHeaders(reply: FastifyReply, response: any, session: RemoteProxySession) {
const setCookie = (response.headers as any).getSetCookie?.() as string[] | undefined
if (Array.isArray(setCookie)) {
for (const cookie of setCookie) {
reply.header("set-cookie", rewriteSetCookie(cookie, session.cookiePrefix))
}
}
response.headers.forEach((value: string, key: string) => {
const lower = key.toLowerCase()
if (
isHopByHopHeader(lower) ||
lower === "set-cookie" ||
lower === "content-length" ||
lower === "content-encoding"
) {
return
}
if (lower === "location") {
reply.header(key, rewriteLocation(value, session.targetBaseUrl, session.localBaseUrl))
return
}
reply.header(key, value)
})
}
function toOutgoingHeaders(headers: ReturnType<FastifyReply["getHeaders"]>): Record<string, string | string[]> {
const next: Record<string, string | string[]> = {}
for (const [key, value] of Object.entries(headers)) {
if (value === undefined) {
continue
}
next[key] = Array.isArray(value) ? value.map(String) : String(value)
}
return next
}
function rewriteSetCookie(cookie: string, cookiePrefix: string): string {
const parts = cookie.split(";").map((part) => part.trim())
const first = parts.shift() ?? ""
const separator = first.indexOf("=")
if (separator <= 0) {
return cookie
}
const name = first.slice(0, separator).trim()
const value = first.slice(separator + 1)
const rewritten = [`${cookiePrefix}${name}=${value}`]
for (const part of parts) {
if (part.slice(0, 7).toLowerCase().startsWith("domain=")) {
continue
}
rewritten.push(part)
}
return rewritten.join("; ")
}
function rewriteRequestCookieHeader(cookieHeader: string, cookiePrefix: string): string {
const next: string[] = []
for (const rawPart of cookieHeader.split(";")) {
const part = rawPart.trim()
if (!part) continue
const separator = part.indexOf("=")
if (separator <= 0) continue
const name = part.slice(0, separator).trim()
const value = part.slice(separator + 1)
if (!name.startsWith(cookiePrefix)) {
continue
}
next.push(`${name.slice(cookiePrefix.length)}=${value}`)
}
return next.join("; ")
}
function rewriteLocation(location: string, targetBaseUrl: URL, localBaseUrl: URL): string {
try {
const parsed = new URL(location, targetBaseUrl)
if (parsed.origin !== targetBaseUrl.origin) {
return location
}
const rewritten = new URL(localBaseUrl.toString())
rewritten.pathname = parsed.pathname
rewritten.search = parsed.search
rewritten.hash = parsed.hash
return rewritten.toString()
} catch {
return location
}
}
function isHopByHopHeader(name: string): boolean {
return new Set([
"connection",
"keep-alive",
"proxy-authenticate",
"proxy-authorization",
"te",
"trailer",
"transfer-encoding",
"upgrade",
]).has(name)
}

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@@ -0,0 +1,54 @@
import type { FastifyInstance } from "fastify"
import { z } from "zod"
import type { RemoteProxySessionCreateResponse } from "../../api-types"
import { isLoopbackAddress } from "../../auth/http-auth"
import type { Logger } from "../../logger"
import type { RemoteProxySessionManager } from "../remote-proxy"
interface RouteDeps {
logger: Logger
sessionManager: RemoteProxySessionManager
}
const CreateSessionSchema = z.object({
baseUrl: z.string().min(1),
skipTlsVerify: z.boolean().optional(),
})
const SessionParamsSchema = z.object({
id: z.string().uuid(),
})
export function registerRemoteProxyRoutes(app: FastifyInstance, deps: RouteDeps) {
app.post("/api/remote-proxy/sessions", async (request, reply): Promise<RemoteProxySessionCreateResponse | { error: string }> => {
try {
const body = CreateSessionSchema.parse(request.body ?? {})
return await deps.sessionManager.createSession(body.baseUrl, Boolean(body.skipTlsVerify))
} catch (error) {
deps.logger.warn({ err: error }, "Failed to create remote proxy session")
reply.code(400)
return { error: error instanceof Error ? error.message : "Failed to create remote proxy session" }
}
})
app.delete("/api/remote-proxy/sessions/:id", async (request, reply): Promise<{ ok: boolean } | { error: string }> => {
if (!isLoopbackAddress(request.socket.remoteAddress)) {
reply.code(404)
return { error: "Not found" }
}
try {
const params = SessionParamsSchema.parse(request.params ?? {})
const deleted = await deps.sessionManager.deleteSession(params.id)
if (!deleted) {
reply.code(404)
return { error: "Remote proxy session not found" }
}
return { ok: true }
} catch (error) {
deps.logger.warn({ err: error }, "Failed to delete remote proxy session")
reply.code(400)
return { error: error instanceof Error ? error.message : "Failed to delete remote proxy session" }
}
})
}