YUes I am god

src/client/client.ts

@@ -110,7 +110,8 @@ export class ScramjetClient {
 		});
 
 		for (const module of modules) {
-			if (module.enabled()) module.default(this, this.global);
+			if (!module.enabled || module.enabled())
+				module.default(this, this.global);
 			else module.disabled(this, this.global);
 		}
 	}

src/client/dom/postmessage.ts

@@ -1,21 +1,35 @@
 import { ScramjetClient } from "../client";
+import { POLLUTANT } from "../shared/realm";
 
 export default function (client: ScramjetClient) {
 	client.Proxy("window.postMessage", {
 		apply(ctx) {
 			// so we need to send the real origin here, since the recieving window can't possibly know.
 			// except, remember that this code is being ran in a different realm than the invoker, so if we ask our `client` it may give us the wrong origin
-			// but, the first argument given will be polluted with the real realm
+			// if we were given any object that came from the real realm we can use that to get the real origin
+			// and this works in every case EXCEPT for the fact that all three arguments can be strings which are copied instead of cloned
+			// so we have to use `$setrealm` which will pollute this with an object from the real realm
+			const pollutant = ctx.this[POLLUTANT] || {};
 
-			// this obtains a reference to the Function object of the real realm
+			// and now we can steal Function from the caller's realm
 			const {
 				constructor: { constructor: Function },
-			} = ctx.args[0];
+			} = pollutant;
 
-			// and finally, invoking the stolen Function will execute inside the caller's realm
+			// invoking stolen function will give us the caller's globalThis, remember scramjet has already proxied it!!!
-			const callerGlobalThis: Self = Function("return globalThis")();
+			const callerGlobalThisProxied: Self = Function("return globalThis")();
 			const callerClient: ScramjetClient =
-				callerGlobalThis[ScramjetClient.SCRAMJET];
+				callerGlobalThisProxied[ScramjetClient.SCRAMJET];
+
+			// this WOULD be enough but the source argument of MessageEvent has to return the caller's window
+			// and if we just call it normally it would be coming from here, which WILL NOT BE THE CALLER'S because the accessor is from the parent
+			// so with the stolen function we wrap postmessage so the source will truly be the caller's window (remember that function is scramjet's!!!)
+			const wrappedPostMessage = Function(
+				"data",
+				"origin",
+				"transfer",
+				"this(data, origin, transfer)"
+			);
 
 			ctx.args[0] = {
 				$scramjet$origin: callerClient.url.origin,
@@ -24,6 +38,8 @@ export default function (client: ScramjetClient) {
 
 			// * origin because obviously
 			if (typeof ctx.args[1] === "string") ctx.args[1] = "*";
+
+			wrappedPostMessage.call(ctx.fn, ctx.args[0], ctx.args[1], ctx.args[2]);
 		},
 	});
 }

src/client/helpers.ts

@@ -1,6 +1,6 @@
 export function getOwnPropertyDescriptorHandler(target, prop) {
 	let realDescriptor = Reflect.getOwnPropertyDescriptor(target, prop);
-	if (!realDescriptor) return realDescriptor;
+	return realDescriptor;
 
 	let d: PropertyDescriptor = {};
 

src/client/shared/realm.ts

@@ -0,0 +1,26 @@
+import { ScramjetClient } from "../client";
+import { config } from "../shared";
+
+export const POLLUTANT = Symbol.for("scramjet realm pollutant");
+
+export default function (client: ScramjetClient, self: typeof globalThis) {
+	// object.$setrealm({}).postMessage(...)
+	// the empty object is the "pollutant" which can reconstruct the real realm
+	// i explain more in postmessage.ts
+	Object.defineProperty(self.Object.prototype, config.setrealmfn, {
+		value(pollution: {}) {
+			// this is bad!! sites could detect this
+			Object.defineProperty(this, POLLUTANT, {
+				value: pollution,
+				writable: false,
+				configurable: true,
+				enumerable: false,
+			});
+
+			return this;
+		},
+		writable: false,
+		configurable: false,
+		enumerable: false,
+	});
+}

src/controller/index.ts

@@ -16,12 +16,16 @@ export class ScramjetController {
 			importfn: "$scramjet$import",
 			rewritefn: "$scramjet$rewrite",
 			metafn: "$scramjet$meta",
+			setrealmfn: "$scramjet$setrealm",
 			wasm: "/scramjet.wasm.js",
 			shared: "/scramjet.shared.js",
 			worker: "/scramjet.worker.js",
 			thread: "/scramjet.thread.js",
 			client: "/scramjet.client.js",
 			codecs: "/scramjet.codecs.js",
+			flags: {
+				serviceworkers: true,
+			},
 		};
 
 		this.config = Object.assign({}, defaultConfig, config);

src/types.d.ts

@@ -28,6 +28,7 @@ interface ScramjetConfig {
 	importfn: string;
 	rewritefn: string;
 	metafn: string;
+	setrealmfn: string;
 	wasm: string;
 	shared: string;
 	worker: string;