[Init] Initial commit - NetMesh terminal manager

electron/plugins/runtime/browserRuntime.mjs

@@ -0,0 +1,74 @@
+import { startPluginRuntime } from "./runtimePeer.mjs";
+
+function disableDirectBrowserCapability(name) {
+  try {
+    Object.defineProperty(globalThis, name, {
+      configurable: false,
+      enumerable: false,
+      value: undefined,
+      writable: false,
+    });
+  } catch {
+    try { globalThis[name] = undefined; } catch {}
+  }
+}
+
+function lockDirectBrowserCapabilities() {
+  for (const name of [
+    "EventSource",
+    "RTCPeerConnection",
+    "SharedWorker",
+    "WebSocket",
+    "WebSocketStream",
+    "WebTransport",
+    "Worker",
+    "XMLHttpRequest",
+    "fetch",
+    "webkitRTCPeerConnection",
+  ]) disableDirectBrowserCapability(name);
+  try {
+    Object.defineProperty(Navigator.prototype, "sendBeacon", {
+      configurable: false,
+      enumerable: false,
+      value: () => false,
+      writable: false,
+    });
+  } catch {}
+}
+
+function waitForPort() {
+  return new Promise((resolve) => {
+    const acceptPort = (event) => {
+      if (
+        event.data?.type !== "netcatty-plugin:connect"
+        || event.data?.runtimeToken !== window.location.hostname
+      ) return;
+      const port = event.ports?.[0];
+      if (!port) return;
+      window.removeEventListener("message", acceptPort);
+      resolve(port);
+    };
+    window.addEventListener("message", acceptPort);
+    window.postMessage({
+      type: "netcatty-plugin:runtime-ready",
+      runtimeToken: window.location.hostname,
+    }, "*");
+  });
+}
+
+const [configResponse, port] = await Promise.all([
+  fetch(new URL("./config.json", import.meta.url), { cache: "no-store", credentials: "omit" }),
+  waitForPort(),
+]);
+if (!configResponse.ok) throw new Error("Unable to load plugin runtime configuration");
+const config = await configResponse.json();
+lockDirectBrowserCapabilities();
+await startPluginRuntime({
+  port,
+  config,
+  loadPlugin: (entryUrl) => import(entryUrl),
+});
+window.postMessage({
+  type: "netcatty-plugin:runtime-connected",
+  runtimeToken: window.location.hostname,
+}, "*");