Codex Agent
358 lines
12 KiB
JavaScript
358 lines
12 KiB
JavaScript
import { createServer, request as httpRequest } from "node:http";
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import { readFile, stat } from "node:fs/promises";
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import path from "node:path";
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import { gzip } from "node:zlib";
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import { promisify } from "node:util";
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import { isCloudWebSseRoute, proxyCloudApiRequest, upstreamRequestHeaders } from "./cloud-web-proxy.mjs";
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import { cloudWebProxyRoutePolicy } from "./cloud-web-routes.mjs";
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const readOnlyRpcMethods = new Set([
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"system.health",
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"cloud.adapter.describe",
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"audit.event.query",
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"evidence.record.query"
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]);
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const gzipAsync = promisify(gzip);
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const GZIP_MIN_BYTES = 1024;
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const DEFAULT_AUTH_USERNAME = "admin";
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const DEFAULT_AUTH_PASSWORD = "hwlab2026";
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export async function serveCloudWeb(options) {
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const server = createCloudWebServer(options);
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server.listen(options.port, "0.0.0.0", () => {
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process.stdout.write(JSON.stringify({
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serviceId: options.serviceId,
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environment: process.env.HWLAB_ENVIRONMENT || "dev",
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status: "listening",
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port: options.port
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}) + "\n");
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});
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}
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export function createCloudWebServer({
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serviceId,
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healthPayload,
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sendJson,
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roots = ["/app/web/hwlab-cloud-web/dist", "/app/web/hwlab-cloud-web"],
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cloudApiBaseUrl = process.env.HWLAB_API_BASE_URL || "",
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cloudApiProxyTimeoutMs = parseTimeout(process.env.HWLAB_CLOUD_WEB_PROXY_TIMEOUT_MS, 1260000, {
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min: 1000,
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max: 2400000
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})
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}) {
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return createServer(async (request, response) => {
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const url = new URL(request.url || "/", "http://hwlab-cloud-web.local");
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if (url.pathname === "/health/live" || url.pathname === "/health") {
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sendJson(response, 200, healthPayload());
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return;
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}
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if (await handleCloudWebAuth({ request, response, url, cloudApiBaseUrl, cloudApiProxyTimeoutMs, serviceId, sendJson })) {
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return;
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}
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const proxyPolicy = cloudWebProxyRoutePolicy(request.method, url.pathname);
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if (proxyPolicy.proxy) {
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await proxyCloudApi({ request, response, url, cloudApiBaseUrl, cloudApiProxyTimeoutMs, serviceId, sendJson });
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return;
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}
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const routePath = url.pathname.replace(/\/+$/u, "") || "/";
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const relativePath = routePath === "/" || routePath === "/gate" || routePath === "/diagnostics/gate" || routePath === "/help" || routePath === "/skills" || routePath === "/access"
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? "index.html"
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: url.pathname.slice(1);
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for (const root of roots) {
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const candidate = path.resolve(root, relativePath);
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if (!candidate.startsWith(root)) continue;
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try {
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const info = await stat(candidate);
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if (!info.isFile()) continue;
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const body = await readFile(candidate);
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const type = contentType(candidate);
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const encoded = await encodeStaticBody(request, body, type);
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response.writeHead(200, {
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"content-type": type,
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...encoded.headers,
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"content-length": encoded.body.length
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});
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response.end(encoded.body);
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return;
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} catch {
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// Try the next root.
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}
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}
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sendJson(response, 404, { error: "not_found", serviceId, path: url.pathname });
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});
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}
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export async function handleCloudWebAuth(options) {
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const { request, response, url } = options;
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if (url.pathname === "/auth/bootstrap" && request.method === "GET") {
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await handleAuthBootstrap(options);
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return true;
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}
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if (url.pathname === "/auth/session" && request.method === "GET") {
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await proxyCloudApi(options);
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return true;
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}
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if (url.pathname === "/auth/login" && request.method === "POST") {
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await proxyCloudApi(options);
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return true;
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}
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if (url.pathname === "/auth/logout" && request.method === "POST") {
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await proxyCloudApi(options);
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return true;
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}
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if (!url.pathname.startsWith("/auth/")) return false;
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await proxyCloudApi(options);
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return true;
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}
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async function handleAuthBootstrap(options) {
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const { request, response, cloudApiBaseUrl, cloudApiProxyTimeoutMs, serviceId, sendJson } = options;
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if (!cloudApiBaseUrl) {
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sendJson(response, 503, { error: "cloud_api_base_url_missing", serviceId, path: "/auth/bootstrap" });
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return;
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}
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const session = await requestCloudApiJson({ request, method: "GET", pathname: "/auth/session", cloudApiBaseUrl, cloudApiProxyTimeoutMs });
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if (session.ok && session.body?.authenticated === true) {
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sendJsonWithForwardedCookies(response, session.statusCode, session.body, session.headers);
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return;
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}
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const config = webAuthConfig();
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if (config.mode !== "auto") {
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sendJsonWithForwardedCookies(response, session.statusCode || 200, session.body ?? { authenticated: false }, session.headers);
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return;
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}
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const login = await requestCloudApiJson({
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request,
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method: "POST",
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pathname: "/auth/login",
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body: JSON.stringify({ username: config.username, password: config.password }),
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cloudApiBaseUrl,
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cloudApiProxyTimeoutMs
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});
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sendJsonWithForwardedCookies(response, login.statusCode || 502, login.body ?? { authenticated: false, error: "auth_bootstrap_failed" }, login.headers);
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}
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function webAuthConfig() {
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return {
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mode: authConfigValue("HWLAB_CLOUD_WEB_AUTH_MODE", "auto"),
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username: authConfigValue("HWLAB_CLOUD_WEB_AUTH_USERNAME", DEFAULT_AUTH_USERNAME),
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password: authConfigValue("HWLAB_CLOUD_WEB_AUTH_PASSWORD", DEFAULT_AUTH_PASSWORD)
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};
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}
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function authConfigValue(name, fallback) {
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const value = process.env[name];
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return typeof value === "string" && value.trim() ? value.trim() : fallback;
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}
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function requestCloudApiJson({ request, method, pathname, body = "", cloudApiBaseUrl, cloudApiProxyTimeoutMs }) {
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return new Promise((resolve) => {
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let settled = false;
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const target = new URL(pathname, cloudApiBaseUrl);
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const proxyRequest = { method, headers: upstreamRequestHeaders({ headers: request.headers }, body) };
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const upstream = httpRequest(target, { method, headers: proxyRequest.headers }, (upstreamResponse) => {
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const chunks = [];
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upstreamResponse.on("data", (chunk) => chunks.push(chunk));
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upstreamResponse.on("end", () => {
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if (settled) return;
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settled = true;
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const rawBody = Buffer.concat(chunks).toString("utf8");
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let parsed = null;
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try { parsed = rawBody ? JSON.parse(rawBody) : null; } catch { parsed = { error: "invalid_json", rawBody: rawBody.slice(0, 200) }; }
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resolve({ ok: (upstreamResponse.statusCode || 0) >= 200 && (upstreamResponse.statusCode || 0) < 300, statusCode: upstreamResponse.statusCode || 502, body: parsed, headers: upstreamResponse.headers });
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});
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upstreamResponse.on("error", (error) => {
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if (settled) return;
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settled = true;
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resolve({ ok: false, statusCode: 502, body: { authenticated: false, error: error.message }, headers: {} });
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});
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});
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const timeout = setTimeout(() => {
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if (settled) return;
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settled = true;
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upstream.destroy();
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resolve({ ok: false, statusCode: 504, body: { authenticated: false, error: "auth_bootstrap_timeout" }, headers: {} });
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}, cloudApiProxyTimeoutMs);
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upstream.on("error", (error) => {
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if (settled) return;
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settled = true;
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clearTimeout(timeout);
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resolve({ ok: false, statusCode: 502, body: { authenticated: false, error: error.message }, headers: {} });
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});
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upstream.on("close", () => clearTimeout(timeout));
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if (body) upstream.write(body);
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upstream.end();
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});
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}
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function sendJsonWithForwardedCookies(response, statusCode, body, headers = {}) {
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const payload = JSON.stringify(body);
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const setCookie = headers["set-cookie"];
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const responseHeaders = {
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"content-type": "application/json",
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"content-length": Buffer.byteLength(payload)
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};
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if (setCookie) responseHeaders["set-cookie"] = setCookie;
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response.writeHead(statusCode, responseHeaders);
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response.end(payload);
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}
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async function readRequestBody(request) {
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let body = "";
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for await (const chunk of request) {
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body += chunk;
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}
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return body;
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}
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function parseTimeout(value, fallback, { min, max }) {
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const parsed = Number.parseInt(value || "", 10);
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if (!Number.isInteger(parsed)) return fallback;
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return Math.min(Math.max(parsed, min), max);
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}
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function requestUpstream({ target, request, response, body, url, cloudApiProxyTimeoutMs }) {
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return proxyCloudApiRequest({
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target,
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request,
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response,
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body,
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timeoutMs: cloudApiProxyTimeoutMs,
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forceStream: isCloudWebSseRoute(url.pathname)
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});
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}
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export async function proxyCloudApi({ request, response, url, cloudApiBaseUrl, cloudApiProxyTimeoutMs, serviceId, sendJson }) {
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if (!cloudApiBaseUrl) {
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sendJson(response, 503, {
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error: "cloud_api_base_url_missing",
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serviceId,
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path: url.pathname
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});
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return;
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}
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let body = "";
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if (request.method !== "GET") {
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body = await readRequestBody(request);
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}
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if (url.pathname === "/json-rpc") {
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try {
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const envelope = body ? JSON.parse(body) : {};
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if (!readOnlyRpcMethods.has(envelope.method)) {
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sendJson(response, 403, {
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error: "readonly_rpc_required",
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serviceId,
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method: envelope.method || null
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});
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return;
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}
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} catch (error) {
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sendJson(response, 400, {
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error: "invalid_json",
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serviceId,
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reason: error.message
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});
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return;
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}
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}
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const target = new URL(url.pathname + url.search, cloudApiBaseUrl);
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try {
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await requestUpstream({ target, request, response, body: request.method === "GET" ? "" : body, url, cloudApiProxyTimeoutMs });
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} catch (error) {
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if (response.headersSent || response.writableEnded) {
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if (!response.writableEnded) response.destroy(error);
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return;
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}
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const timedOut = error.timedOut === true || /timed out after \d+ms/iu.test(error.message);
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const code = timedOut ? "cloud_api_proxy_timeout" : "cloud_api_proxy_failed";
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const category = timedOut ? "timeout" : "proxy";
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const traceId = request.headers["x-trace-id"] || null;
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const userMessage = timedOut
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? "Code Agent 代理等待 cloud-api 超过 " + cloudApiProxyTimeoutMs + "ms；输入已保留，可稍后重试。"
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: "Code Agent 代理暂时无法连接 cloud-api；输入已保留，可稍后重试。";
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sendJson(response, 502, {
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status: "failed",
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error: {
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code,
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layer: "proxy",
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category,
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retryable: true,
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userMessage,
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message: userMessage,
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timeoutMs: timedOut ? cloudApiProxyTimeoutMs : null,
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traceId,
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route: url.pathname,
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blocker: {
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code,
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layer: "proxy",
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category,
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retryable: true,
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summary: userMessage,
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userMessage,
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traceId,
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route: url.pathname
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}
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},
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serviceId,
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target: target.href.replace(/\/\/[^/@]*@/u, "//***@"),
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traceId,
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reason: userMessage
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});
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}
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}
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function contentType(filePath) {
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if (filePath.endsWith(".html")) return "text/html; charset=utf-8";
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if (filePath.endsWith(".css")) return "text/css; charset=utf-8";
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if (filePath.endsWith(".mjs") || filePath.endsWith(".js")) return "text/javascript; charset=utf-8";
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if (filePath.endsWith(".svg")) return "image/svg+xml; charset=utf-8";
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if (filePath.endsWith(".md")) return "text/markdown; charset=utf-8";
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if (filePath.endsWith(".json")) return "application/json; charset=utf-8";
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return "application/octet-stream";
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}
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async function encodeStaticBody(request, body, type) {
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if (!isGzipCandidate(type, body.length) || !acceptsEncoding(request.headers["accept-encoding"], "gzip")) {
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return { body, headers: isCompressibleType(type) ? { "vary": "Accept-Encoding" } : {} };
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}
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const compressed = await gzipAsync(body, { level: 6 });
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return {
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body: compressed,
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headers: {
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"content-encoding": "gzip",
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"vary": "Accept-Encoding"
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}
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};
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}
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function isGzipCandidate(type, sizeBytes) {
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return sizeBytes >= GZIP_MIN_BYTES && isCompressibleType(type);
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}
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function isCompressibleType(type) {
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return /^(?:text\/|application\/json\b)/u.test(String(type || ""));
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}
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function acceptsEncoding(header, encoding) {
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const value = Array.isArray(header) ? header.join(",") : String(header || "");
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for (const segment of value.split(",")) {
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const [name, ...params] = segment.trim().split(";");
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const token = name.trim().toLowerCase();
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if (token !== encoding && token !== "*") continue;
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const q = params.map((param) => param.trim().toLowerCase()).find((param) => param.startsWith("q="));
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if (q && Number.parseFloat(q.slice(2)) <= 0) continue;
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return true;
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}
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return false;
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}
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