Initial import of HEROLL source and design documents

2026-10-26 16:05:39 +08:00
commit fdb55672c1
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+import http from "node:http";
+import { readFile, stat } from "node:fs/promises";
+import path from "node:path";
+import { fileURLToPath } from "node:url";
+
+const scriptDir = path.dirname(fileURLToPath(import.meta.url));
+const rootDir = path.resolve(scriptDir, "../..");
+const port = Number(process.env.HEROLL_MVP_PORT || 4173);
+const parentPidFlag = process.argv.indexOf("--parent-pid");
+const parentPid = parentPidFlag >= 0 ? Number(process.argv[parentPidFlag + 1]) : 0;
+const mime = new Map([
+  [".html", "text/html; charset=utf-8"],
+  [".js", "text/javascript; charset=utf-8"],
+  [".mjs", "text/javascript; charset=utf-8"],
+  [".css", "text/css; charset=utf-8"],
+  [".json", "application/json; charset=utf-8"],
+  [".csv", "text/csv; charset=utf-8"],
+  [".png", "image/png"],
+  [".jpg", "image/jpeg"],
+  [".jpeg", "image/jpeg"],
+  [".svg", "image/svg+xml"],
+  [".wav", "audio/wav"],
+  [".ogg", "audio/ogg"]
+]);
+
+function safePath(urlPath) {
+  const decoded = decodeURIComponent(urlPath.split("?")[0] || "/");
+  const relative = decoded === "/" ? "mvp/index.html" : decoded.replace(/^\/+/, "");
+  const resolved = path.resolve(rootDir, relative);
+  if (!resolved.startsWith(rootDir + path.sep) && resolved !== rootDir) return null;
+  return resolved;
+}
+
+const server = http.createServer(async (req, res) => {
+  try {
+    let target = safePath(req.url || "/");
+    if (!target) {
+      res.writeHead(403).end("Forbidden");
+      return;
+    }
+    const info = await stat(target);
+    if (info.isDirectory()) target = path.join(target, "index.html");
+    const body = await readFile(target);
+    res.writeHead(200, {
+      "Content-Type": mime.get(path.extname(target).toLowerCase()) || "application/octet-stream",
+      "Cache-Control": "no-store",
+      "Cross-Origin-Resource-Policy": "same-origin"
+    });
+    res.end(body);
+  } catch (error) {
+    res.writeHead(404, { "Content-Type": "text/plain; charset=utf-8" });
+    res.end(`Not found\n${String(error)}`);
+  }
+});
+
+server.listen(port, "127.0.0.1", () => {
+  console.log(`HEROLL MVP running at http://127.0.0.1:${port}/mvp/`);
+  console.log("Press Ctrl+C to stop.");
+});
+
+if (Number.isInteger(parentPid) && parentPid > 0) {
+  const parentWatch = setInterval(() => {
+    try {
+      process.kill(parentPid, 0);
+    } catch {
+      clearInterval(parentWatch);
+      server.close(() => process.exit(0));
+    }
+  }, 1000);
+  parentWatch.unref();
+}