UniDesk Codex
711 lines
27 KiB
JavaScript
711 lines
27 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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import { UPSTREAM_UNAVAILABLE_ERROR_CODE, UPSTREAM_UNAVAILABLE_MESSAGE } from "./http.mjs";
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const gzipAsync = promisify(gzip);
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const GZIP_MIN_BYTES = 1024;
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const CLIENT_DISCONNECT_ERROR_CODES = new Set([
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"ECONNRESET",
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"EPIPE",
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"ERR_STREAM_PREMATURE_CLOSE"
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]);
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const CLIENT_DISCONNECT_ERROR_PATTERN = /\b(?:socket hang up|client disconnected|premature close)\b/iu;
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const CLOUD_WEB_ERROR_HANDLER_INSTALLED = Symbol.for("hwlab.cloud-web.error-handler-installed");
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const CLIENT_ROUTE_FALLBACK_PATHS = new Set(["/workbench", "/workspace", "/opencode", "/gate", "/diagnostics/gate", "/help", "/skills", "/access"]);
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const STATIC_ASSET_EXTENSION_PATTERN = /\.[A-Za-z0-9][A-Za-z0-9_-]*$/u;
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const OPENCODE_PROXY_PREFIX = "/_opencode";
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const TRACE_EXPLORER_TEMPLATE_TOKEN = "{trace_id}";
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const TRACE_EXPLORER_TEMPLATE_PLACEHOLDER_PATTERN = /\{([A-Za-z0-9_:-]+)\}/gu;
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export async function serveCloudWeb(options) {
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installCloudWebProcessErrorHandlers({ serviceId: options.serviceId });
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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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opencodeUpstreamUrl = optionalRuntimeConfigEnv("HWLAB_CLOUD_WEB_OPENCODE_UPSTREAM_URL") || "",
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opencodeProxyHost = opencodeProxyHostFromEnv(),
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opencodeProxyTimeoutMs = parseTimeout(process.env.HWLAB_CLOUD_WEB_OPENCODE_PROXY_TIMEOUT_MS, cloudApiProxyTimeoutMs, {
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min: 1000,
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max: 2400000
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}),
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opencodeUsername = optionalRuntimeConfigEnv("HWLAB_CLOUD_WEB_OPENCODE_USERNAME") || "",
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opencodePassword = optionalRuntimeConfigEnv("HWLAB_CLOUD_WEB_OPENCODE_PASSWORD") || ""
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}) {
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return createServer(async (request, response) => {
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attachRequestErrorHandlers({ request, response, serviceId });
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const url = new URL(request.url || "/", "http://hwlab-cloud-web.local");
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try {
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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 (isOpencodeProxyRequest(request, url, opencodeProxyHost)) {
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await proxyOpencodeRequest({ request, response, url, cloudApiBaseUrl, cloudApiProxyTimeoutMs, opencodeUpstreamUrl, opencodeProxyTimeoutMs, opencodeUsername, opencodePassword, serviceId, sendJson });
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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 = normalizeCloudWebRoutePath(url.pathname);
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const relativePath = routePath === "/" || CLIENT_ROUTE_FALLBACK_PATHS.has(routePath) || isCloudWebWorkbenchSessionRoute(routePath) || isCloudWebClientRouteRequest(request, routePath)
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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 type = contentType(candidate);
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const body = await staticResponseBody({ candidate, relativePath, type });
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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 (error) {
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if (isClientDisconnectError(error)) {
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logCloudWebRuntimeEvent("cloud-web-client-disconnect", { serviceId, request, error });
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return;
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}
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// Try the next root for ordinary filesystem misses.
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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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} catch (error) {
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if (isClientDisconnectError(error)) {
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logCloudWebRuntimeEvent("cloud-web-client-disconnect", { serviceId, request, error });
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return;
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}
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if (!response.headersSent && !response.writableEnded) {
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sendJson(response, 500, {
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error: "internal_error",
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serviceId,
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message: error instanceof Error ? error.message : String(error)
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});
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return;
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}
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response.destroy(error);
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}
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});
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}
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async function staticResponseBody({ candidate, relativePath, type }) {
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const body = await readFile(candidate);
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if (relativePath !== "index.html" || !String(type).startsWith("text/html")) return body;
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return injectCloudWebRuntimeConfig(body);
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}
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function injectCloudWebRuntimeConfig(body) {
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const config = runtimeConfigFromEnv();
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if (Object.keys(config).length === 0) return body;
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const html = body.toString("utf8");
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const script = `<script>window.HWLAB_CLOUD_WEB_CONFIG=${safeInlineJson(config)};</script>`;
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if (html.includes("</head>")) return Buffer.from(html.replace("</head>", `${script}</head>`), "utf8");
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if (html.includes("</body>")) return Buffer.from(html.replace("</body>", `${script}</body>`), "utf8");
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return Buffer.from(`${html}${script}`, "utf8");
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}
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function runtimeConfigFromEnv() {
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const config = { displayTime: displayTimeConfigFromEnv() };
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const workbench = workbenchRuntimeConfigFromEnv();
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if (workbench) config.workbench = workbench;
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const opencode = opencodeRuntimeConfigFromEnv();
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if (opencode) config.opencode = opencode;
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return config;
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}
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function opencodeRuntimeConfigFromEnv() {
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const url = optionalRuntimeConfigEnv("HWLAB_CLOUD_WEB_OPENCODE_URL");
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if (!url) return null;
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validateOpencodeUrl(url);
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return { url };
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}
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function displayTimeConfigFromEnv() {
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const timeZone = requiredRuntimeConfigEnv("HWLAB_CLOUD_WEB_DISPLAY_TIME_ZONE");
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const locale = requiredRuntimeConfigEnv("HWLAB_CLOUD_WEB_DISPLAY_TIME_LOCALE");
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const label = requiredRuntimeConfigEnv("HWLAB_CLOUD_WEB_DISPLAY_TIME_LABEL");
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validateDisplayTimeZone(timeZone);
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validateDisplayLocale(locale);
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return { timeZone, locale, label };
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}
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function requiredRuntimeConfigEnv(name) {
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const value = process.env[name];
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if (typeof value !== "string" || value.trim().length === 0) {
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throw new Error(`missing required Cloud Web runtime config env: ${name}`);
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}
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return value.trim();
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}
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function optionalRuntimeConfigEnv(name) {
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const value = process.env[name];
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if (typeof value !== "string") return null;
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const trimmed = value.trim();
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return trimmed.length > 0 ? trimmed : null;
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}
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function validateOpencodeUrl(value) {
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let url;
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try {
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url = new URL(value);
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} catch {
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throw new Error("invalid HWLAB_CLOUD_WEB_OPENCODE_URL: must be an absolute http(s) URL");
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}
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if (url.protocol !== "http:" && url.protocol !== "https:") {
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throw new Error("invalid HWLAB_CLOUD_WEB_OPENCODE_URL: only http(s) URLs are allowed");
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}
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if (url.username || url.password || url.hash) {
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throw new Error("invalid HWLAB_CLOUD_WEB_OPENCODE_URL: credentials and fragments are not allowed");
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}
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}
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function opencodeProxyHostFromEnv() {
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const explicit = optionalRuntimeConfigEnv("HWLAB_CLOUD_WEB_OPENCODE_PROXY_HOST");
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if (explicit) return normalizeHostName(explicit);
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const frameUrl = optionalRuntimeConfigEnv("HWLAB_CLOUD_WEB_OPENCODE_URL");
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if (!frameUrl) return "";
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try {
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const url = new URL(frameUrl);
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return normalizeHostName(url.hostname);
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} catch {
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return "";
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}
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}
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function validateDisplayTimeZone(timeZone) {
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try {
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new Intl.DateTimeFormat("en-US", { timeZone }).format(new Date(0));
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} catch {
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throw new Error(`invalid HWLAB_CLOUD_WEB_DISPLAY_TIME_ZONE: ${timeZone}`);
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}
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}
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function validateDisplayLocale(locale) {
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try {
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new Intl.DateTimeFormat(locale).format(new Date(0));
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} catch {
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throw new Error(`invalid HWLAB_CLOUD_WEB_DISPLAY_TIME_LOCALE: ${locale}`);
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}
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}
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function workbenchRuntimeConfigFromEnv() {
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const traceTimeline = {};
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const result = {};
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const autoExpandRunning = parseEnvBoolean(process.env.HWLAB_WORKBENCH_TRACE_AUTO_EXPAND_RUNNING);
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const autoCollapseTerminal = parseEnvBoolean(process.env.HWLAB_WORKBENCH_TRACE_AUTO_COLLAPSE_TERMINAL);
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const traceExplorerUrlTemplate = traceExplorerUrlTemplateFromEnv(process.env.HWLAB_WORKBENCH_TRACE_EXPLORER_URL_TEMPLATE);
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if (typeof autoExpandRunning === "boolean") traceTimeline.autoExpandRunning = autoExpandRunning;
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if (typeof autoCollapseTerminal === "boolean") traceTimeline.autoCollapseTerminal = autoCollapseTerminal;
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if (Object.keys(traceTimeline).length > 0) result.traceTimeline = traceTimeline;
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if (traceExplorerUrlTemplate) result.traceExplorerUrlTemplate = traceExplorerUrlTemplate;
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return Object.keys(result).length > 0 ? result : null;
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}
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function traceExplorerUrlTemplateFromEnv(value) {
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if (value === undefined || value === null || value === "") return null;
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const template = String(value).trim();
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if (!isSafeTraceExplorerUrlTemplate(template)) {
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throw new Error("invalid HWLAB_WORKBENCH_TRACE_EXPLORER_URL_TEMPLATE: template must be http(s) or same-origin relative URL and contain only {trace_id}");
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}
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return template;
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}
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function isSafeTraceExplorerUrlTemplate(template) {
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if (!template.includes(TRACE_EXPLORER_TEMPLATE_TOKEN)) return false;
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const placeholders = Array.from(template.matchAll(TRACE_EXPLORER_TEMPLATE_PLACEHOLDER_PATTERN), (match) => match[0]);
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if (placeholders.length === 0 || placeholders.some((placeholder) => placeholder !== TRACE_EXPLORER_TEMPLATE_TOKEN)) return false;
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try {
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const rendered = template.replaceAll(TRACE_EXPLORER_TEMPLATE_TOKEN, "trc_template_probe");
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const url = new URL(rendered, "http://hwlab-cloud-web.local");
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return (url.protocol === "http:" || url.protocol === "https:") && !template.startsWith("//");
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} catch {
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return false;
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}
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}
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function parseEnvBoolean(value) {
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if (value === undefined || value === null || value === "") return null;
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const normalized = String(value).trim().toLowerCase();
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if (["1", "true", "yes", "on"].includes(normalized)) return true;
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if (["0", "false", "no", "off"].includes(normalized)) return false;
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return null;
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}
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function safeInlineJson(value) {
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return JSON.stringify(value).replace(/</gu, "\\u003c");
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}
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function isCloudWebWorkbenchSessionRoute(routePath) {
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return /^\/(?:workbench|workspace)\/sessions\/cnv_[A-Za-z0-9_.:-]+$/u.test(routePath);
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}
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function normalizeCloudWebRoutePath(pathname) {
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return String(pathname || "/").replace(/\/+$/u, "") || "/";
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}
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function isCloudWebClientRouteRequest(request, routePath) {
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if (request.method !== "GET" && request.method !== "HEAD") return false;
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if (!routePath || routePath === "/") return true;
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if (routePath.startsWith("/auth/") || routePath === "/auth") return false;
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if (routePath.startsWith("/v1/") || routePath === "/v1") return false;
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if (STATIC_ASSET_EXTENSION_PATTERN.test(path.basename(routePath))) return false;
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const accept = String(request.headers.accept || "").toLowerCase();
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return !accept || accept.includes("text/html") || accept.includes("*/*");
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}
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export function installCloudWebProcessErrorHandlers({ serviceId } = {}) {
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if (process[CLOUD_WEB_ERROR_HANDLER_INSTALLED]) return;
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process[CLOUD_WEB_ERROR_HANDLER_INSTALLED] = true;
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process.on("uncaughtException", (error) => {
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if (isClientDisconnectError(error)) {
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logCloudWebRuntimeEvent("cloud-web-client-disconnect", { serviceId, error, source: "uncaughtException" });
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return;
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}
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logCloudWebRuntimeEvent("cloud-web-runtime-fatal", { serviceId, error, source: "uncaughtException" });
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process.exit(1);
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});
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process.on("unhandledRejection", (reason) => {
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const error = reason instanceof Error ? reason : new Error(String(reason));
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if (isClientDisconnectError(error)) {
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logCloudWebRuntimeEvent("cloud-web-client-disconnect", { serviceId, error, source: "unhandledRejection" });
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return;
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}
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logCloudWebRuntimeEvent("cloud-web-runtime-fatal", { serviceId, error, source: "unhandledRejection" });
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process.exit(1);
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});
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}
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function attachRequestErrorHandlers({ request, response, serviceId }) {
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const handle = (error) => {
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if (isClientDisconnectError(error)) {
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logCloudWebRuntimeEvent("cloud-web-client-disconnect", { serviceId, request, error });
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return;
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}
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throw error;
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};
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request.on("error", handle);
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response.on("error", handle);
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}
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export function isClientDisconnectError(error) {
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const candidate = error instanceof Error ? error : new Error(String(error));
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const code = typeof candidate.code === "string" ? candidate.code : "";
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return CLIENT_DISCONNECT_ERROR_CODES.has(code) || CLIENT_DISCONNECT_ERROR_PATTERN.test(candidate.message || "");
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}
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function logCloudWebRuntimeEvent(event, { serviceId, request = null, error = null, source = null } = {}) {
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const payload = {
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event,
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serviceId: serviceId || "hwlab-cloud-web",
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source,
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method: request?.method || null,
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path: request?.url || null,
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error: error
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? {
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name: error.name || "Error",
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code: typeof error.code === "string" ? error.code : null,
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message: error.message || String(error)
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}
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: null,
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observedAt: new Date().toISOString()
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};
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process.stderr.write(JSON.stringify(payload) + "\n");
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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/register" && 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 auth = await resolveAuthBootstrap({ request, cloudApiBaseUrl, cloudApiProxyTimeoutMs });
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sendJsonWithForwardedCookies(response, auth.statusCode || 502, auth.body ?? { authenticated: false, error: "auth_bootstrap_failed" }, auth.headers);
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}
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async function resolveAuthBootstrap({ request, cloudApiBaseUrl, cloudApiProxyTimeoutMs }) {
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const session = await requestCloudApiJson({ request, method: "GET", pathname: "/auth/session", cloudApiBaseUrl, cloudApiProxyTimeoutMs });
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return withCookieHeader(request, session);
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}
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function requestCloudApiJson({ request, method, pathname, body = "", headers = {}, 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), ...headers } };
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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);
|
|
upstream.end();
|
|
});
|
|
}
|
|
|
|
function withCookieHeader(request, result) {
|
|
return {
|
|
...result,
|
|
cookieHeader: cookieHeaderForUpstream(request.headers.cookie, result.headers?.["set-cookie"])
|
|
};
|
|
}
|
|
|
|
function cookieHeaderForUpstream(existingCookie, setCookie) {
|
|
const pairs = new Map();
|
|
for (const pair of cookiePairsFromHeader(existingCookie)) pairs.set(pair.name, pair.value);
|
|
for (const pair of cookiePairsFromSetCookie(setCookie)) pairs.set(pair.name, pair.value);
|
|
return Array.from(pairs.entries()).map(([name, value]) => `${name}=${value}`).join("; ");
|
|
}
|
|
|
|
function cookiePairsFromHeader(header) {
|
|
if (!header) return [];
|
|
return String(header).split(";").map((part) => cookiePair(part)).filter(Boolean);
|
|
}
|
|
|
|
function hasCookieHeader(header) {
|
|
return cookiePairsFromHeader(header).length > 0;
|
|
}
|
|
|
|
function cookiePairsFromSetCookie(setCookie) {
|
|
const values = Array.isArray(setCookie) ? setCookie : setCookie ? [setCookie] : [];
|
|
return values.map((value) => cookiePair(String(value).split(";")[0])).filter(Boolean);
|
|
}
|
|
|
|
function cookiePair(value) {
|
|
const index = String(value).indexOf("=");
|
|
if (index <= 0) return null;
|
|
const name = String(value).slice(0, index).trim();
|
|
const cookieValue = String(value).slice(index + 1).trim();
|
|
if (!name || !cookieValue) return null;
|
|
return { name, value: cookieValue };
|
|
}
|
|
|
|
function sendJsonWithForwardedCookies(response, statusCode, body, headers = {}) {
|
|
const payload = JSON.stringify(body);
|
|
const setCookie = headers["set-cookie"];
|
|
const responseHeaders = {
|
|
"content-type": "application/json",
|
|
"content-length": Buffer.byteLength(payload)
|
|
};
|
|
if (setCookie) responseHeaders["set-cookie"] = setCookie;
|
|
response.writeHead(statusCode, responseHeaders);
|
|
response.end(payload);
|
|
}
|
|
|
|
async function readRequestBody(request) {
|
|
let body = "";
|
|
for await (const chunk of request) {
|
|
body += chunk;
|
|
}
|
|
return body;
|
|
}
|
|
|
|
function parseTimeout(value, fallback, { min, max }) {
|
|
const parsed = Number.parseInt(value || "", 10);
|
|
if (!Number.isInteger(parsed)) return fallback;
|
|
return Math.min(Math.max(parsed, min), max);
|
|
}
|
|
|
|
function requestUpstream({ target, request, response, body, url, cloudApiProxyTimeoutMs }) {
|
|
return proxyCloudApiRequest({
|
|
target,
|
|
request,
|
|
response,
|
|
body,
|
|
timeoutMs: cloudApiProxyTimeoutMs,
|
|
forceStream: isCloudWebSseRoute(url.pathname)
|
|
});
|
|
}
|
|
|
|
export async function proxyCloudApi({ request, response, url, cloudApiBaseUrl, cloudApiProxyTimeoutMs, serviceId, sendJson }) {
|
|
if (!cloudApiBaseUrl) {
|
|
sendJson(response, 503, {
|
|
error: "cloud_api_base_url_missing",
|
|
serviceId,
|
|
path: url.pathname
|
|
});
|
|
return;
|
|
}
|
|
|
|
let body = "";
|
|
if (request.method !== "GET") {
|
|
body = await readRequestBody(request);
|
|
}
|
|
|
|
const target = new URL(url.pathname + url.search, cloudApiBaseUrl);
|
|
try {
|
|
await requestUpstream({ target, request, response, body: request.method === "GET" ? "" : body, url, cloudApiProxyTimeoutMs });
|
|
} catch (error) {
|
|
if (response.headersSent || response.writableEnded) {
|
|
if (!response.writableEnded) response.destroy(error);
|
|
return;
|
|
}
|
|
const timedOut = error.timedOut === true || /timed out after \d+ms/iu.test(error.message);
|
|
const code = UPSTREAM_UNAVAILABLE_ERROR_CODE;
|
|
const category = timedOut ? "timeout" : "proxy";
|
|
const traceId = request.headers["x-trace-id"] || null;
|
|
const userMessage = UPSTREAM_UNAVAILABLE_MESSAGE;
|
|
sendJson(response, 502, {
|
|
status: "failed",
|
|
error: {
|
|
code,
|
|
layer: "proxy",
|
|
category,
|
|
retryable: true,
|
|
userMessage,
|
|
message: userMessage,
|
|
timeoutMs: timedOut ? cloudApiProxyTimeoutMs : null,
|
|
traceId,
|
|
route: url.pathname,
|
|
blocker: {
|
|
code,
|
|
layer: "proxy",
|
|
category,
|
|
retryable: true,
|
|
summary: userMessage,
|
|
userMessage,
|
|
traceId,
|
|
route: url.pathname
|
|
}
|
|
},
|
|
serviceId,
|
|
target: target.href.replace(/\/\/[^/@]*@/u, "//***@"),
|
|
traceId,
|
|
reason: userMessage
|
|
});
|
|
}
|
|
}
|
|
|
|
async function proxyOpencodeRequest({ request, response, url, cloudApiBaseUrl, cloudApiProxyTimeoutMs, opencodeUpstreamUrl, opencodeProxyTimeoutMs, opencodeUsername, opencodePassword, serviceId, sendJson }) {
|
|
if (!cloudApiBaseUrl) {
|
|
sendJson(response, 503, { error: "cloud_api_base_url_missing", serviceId, path: url.pathname });
|
|
return;
|
|
}
|
|
if (!opencodeUpstreamUrl) {
|
|
sendJson(response, 503, { error: "opencode_upstream_url_missing", serviceId, path: url.pathname });
|
|
return;
|
|
}
|
|
const authorization = opencodeBasicAuthorization(opencodeUsername, opencodePassword);
|
|
if (!authorization) {
|
|
sendJson(response, 503, { error: "opencode_credentials_missing", serviceId, path: url.pathname });
|
|
return;
|
|
}
|
|
|
|
const session = await requestCloudApiJson({ request, method: "GET", pathname: "/auth/session", cloudApiBaseUrl, cloudApiProxyTimeoutMs });
|
|
if (!session.ok || session.body?.authenticated !== true) {
|
|
sendJson(response, session.statusCode === 403 ? 403 : 401, {
|
|
authenticated: false,
|
|
error: "opencode_auth_required",
|
|
serviceId,
|
|
path: url.pathname
|
|
});
|
|
return;
|
|
}
|
|
|
|
let body = "";
|
|
if (request.method !== "GET" && request.method !== "HEAD") {
|
|
body = await readRequestBody(request);
|
|
}
|
|
|
|
const target = opencodeTargetUrl(url, opencodeUpstreamUrl);
|
|
const upstreamRequest = {
|
|
method: request.method,
|
|
headers: opencodeUpstreamHeaders(request, body, authorization)
|
|
};
|
|
try {
|
|
await proxyCloudApiRequest({
|
|
target,
|
|
request: upstreamRequest,
|
|
response,
|
|
body: request.method === "GET" || request.method === "HEAD" ? "" : body,
|
|
timeoutMs: opencodeProxyTimeoutMs
|
|
});
|
|
} catch (error) {
|
|
if (response.headersSent || response.writableEnded) {
|
|
if (!response.writableEnded) response.destroy(error);
|
|
return;
|
|
}
|
|
sendJson(response, 502, {
|
|
status: "failed",
|
|
error: "opencode_proxy_unavailable",
|
|
serviceId,
|
|
path: url.pathname,
|
|
reason: UPSTREAM_UNAVAILABLE_MESSAGE
|
|
});
|
|
}
|
|
}
|
|
|
|
function isOpencodeProxyRequest(request, url, opencodeProxyHost) {
|
|
if (url.pathname === OPENCODE_PROXY_PREFIX || url.pathname.startsWith(`${OPENCODE_PROXY_PREFIX}/`)) return true;
|
|
const targetHost = normalizeHostName(opencodeProxyHost);
|
|
if (!targetHost) return false;
|
|
return requestHostName(request) === targetHost;
|
|
}
|
|
|
|
function opencodeTargetUrl(url, opencodeUpstreamUrl) {
|
|
const pathname = url.pathname === OPENCODE_PROXY_PREFIX
|
|
? "/"
|
|
: url.pathname.startsWith(`${OPENCODE_PROXY_PREFIX}/`)
|
|
? url.pathname.slice(OPENCODE_PROXY_PREFIX.length) || "/"
|
|
: url.pathname;
|
|
return new URL(`${pathname}${url.search}`, opencodeUpstreamUrl);
|
|
}
|
|
|
|
function opencodeUpstreamHeaders(request, body, authorization) {
|
|
const headers = {
|
|
accept: request.headers.accept || "*/*",
|
|
authorization
|
|
};
|
|
for (const name of ["content-type", "prefer", "traceparent", "tracestate", "x-hwlab-otel-trace-id", "x-trace-id", "x-request-id"]) {
|
|
if (request.headers[name] !== undefined) headers[name] = request.headers[name];
|
|
}
|
|
if (body) headers["content-length"] = Buffer.byteLength(body);
|
|
return headers;
|
|
}
|
|
|
|
function opencodeBasicAuthorization(username, password) {
|
|
if (!username || !password) return "";
|
|
return `Basic ${Buffer.from(`${username}:${password}`, "utf8").toString("base64")}`;
|
|
}
|
|
|
|
function requestHostName(request) {
|
|
return normalizeHostName(String(request.headers.host || "").split(":")[0]);
|
|
}
|
|
|
|
function normalizeHostName(value) {
|
|
return String(value || "").trim().toLowerCase().replace(/\.+$/u, "");
|
|
}
|
|
|
|
function contentType(filePath) {
|
|
if (filePath.endsWith(".html")) return "text/html; charset=utf-8";
|
|
if (filePath.endsWith(".css")) return "text/css; charset=utf-8";
|
|
if (filePath.endsWith(".mjs") || filePath.endsWith(".js")) return "text/javascript; charset=utf-8";
|
|
if (filePath.endsWith(".svg")) return "image/svg+xml; charset=utf-8";
|
|
if (filePath.endsWith(".md")) return "text/markdown; charset=utf-8";
|
|
if (filePath.endsWith(".json")) return "application/json; charset=utf-8";
|
|
return "application/octet-stream";
|
|
}
|
|
|
|
async function encodeStaticBody(request, body, type) {
|
|
if (!isGzipCandidate(type, body.length) || !acceptsEncoding(request.headers["accept-encoding"], "gzip")) {
|
|
return { body, headers: isCompressibleType(type) ? { "vary": "Accept-Encoding" } : {} };
|
|
}
|
|
const compressed = await gzipAsync(body, { level: 6 });
|
|
return {
|
|
body: compressed,
|
|
headers: {
|
|
"content-encoding": "gzip",
|
|
"vary": "Accept-Encoding"
|
|
}
|
|
};
|
|
}
|
|
|
|
function isGzipCandidate(type, sizeBytes) {
|
|
return sizeBytes >= GZIP_MIN_BYTES && isCompressibleType(type);
|
|
}
|
|
|
|
function isCompressibleType(type) {
|
|
return /^(?:text\/|application\/json\b)/u.test(String(type || ""));
|
|
}
|
|
|
|
function acceptsEncoding(header, encoding) {
|
|
const value = Array.isArray(header) ? header.join(",") : String(header || "");
|
|
for (const segment of value.split(",")) {
|
|
const [name, ...params] = segment.trim().split(";");
|
|
const token = name.trim().toLowerCase();
|
|
if (token !== encoding && token !== "*") continue;
|
|
const q = params.map((param) => param.trim().toLowerCase()).find((param) => param.startsWith("q="));
|
|
if (q && Number.parseFloat(q.slice(2)) <= 0) continue;
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|