allnet.ts: Rename from startup.ts

src/allnet.ts

@@ -0,0 +1,99 @@
+import addHours = require("date-fns/add_hours");
+import express = require("express");
+import iconv = require("iconv-lite");
+import read = require("raw-body");
+
+import { unzipSync } from "zlib";
+
+import { startupHost, startupUri } from "./switchboard";
+
+const hourDelta = parseInt(process.env.HOUR_DELTA || "0");
+const app = express();
+
+// Startup request is url-encoded-ish... except it's also zlibed and base64ed.
+// So in the absence of any exotic Transfer-Encoding headers this Content-Type
+// is incorrect and we have to override Express' built-in handling.
+
+app.use(async function(req, res, next) {
+  if (req.method !== "POST") {
+    return res.status(405).end();
+  }
+
+  if (!req.is("application/x-www-form-urlencoded")) {
+    return next();
+  }
+
+  const base64 = await read(req, { encoding: "ascii" });
+  const zbytes = Buffer.from(base64, "base64");
+  const bytes = unzipSync(zbytes);
+  const str = bytes.toString("ascii").trim();
+
+  const kvps = str.split("&");
+  const reqParams = {};
+
+  // Keys and values are not URL-escaped
+
+  kvps.forEach(kvp => {
+    const [key, val] = kvp.split("=");
+
+    reqParams[key] = val;
+  });
+
+  const send_ = res.send;
+
+  req.body = reqParams;
+  res.send = resParams => {
+    const str =
+      Object.entries(resParams)
+        .map(([key, val]) => key + "=" + val)
+        .join("&") + "\n";
+
+    res.set("content-type", "text/plain");
+
+    const bin = iconv.encode(str, "shift_jis");
+
+    return send_.apply(res, [bin]);
+  };
+
+  return next();
+});
+
+app.post("/sys/servlet/PowerOn", function(req, resp) {
+  console.log("--- Startup Request ---\n\n", req.body);
+
+  // Cut milliseconds out of ISO timestamp
+
+  const now = new Date();
+  const adjusted = addHours(now, -hourDelta);
+  const isoStrWithMs = adjusted.toISOString();
+  const isoStr = isoStrWithMs.substr(0, 19) + "Z";
+
+  const resParams = {
+    stat: 1,
+    uri: startupUri(req.body.game_id),
+    host: startupHost(req.body.game_id),
+    place_id: "123",
+    name: process.env.SHOP_NAME,
+    nickname: process.env.SHOP_NAME,
+    region0: "1",
+    region_name0: "W",
+    region_name1: "X",
+    region_name2: "Y",
+    region_name3: "Z",
+    country: process.env.SHOP_REGION,
+    allnet_id: "456",
+    client_timezone: "+0900",
+
+    utc_time: isoStr,
+    setting: "",
+    res_ver: "3",
+    token: req.body.token,
+  };
+
+  console.log("\n--- Startup Response ---\n\n", resParams);
+  console.log("");
+
+  resp.send(resParams);
+});
+
+export default app;