diff --git a/src/main.js b/src/main.js
index e6f6d30..fb647ca 100644
--- a/src/main.js
+++ b/src/main.js
@@ -29,6 +29,14 @@ let plutoniumManifest = {
 	"baseUrl": "https://cdn.plutonium.pw/updater/prod/files/",
 	"files": []
 };
+let userInfo = {
+	"token": "V3ryS3cr3t4uth3nt1c4t10nT0k3n",
+	"userId": -1,
+	"username": "AnonGuest",
+	"email": "guest@neverla.nd",
+	"emailVerified": false,
+	"avatar": "https://forum.plutonium.pw/assets/uploads/system/avatar-default.png"
+};
 
 function createMainWindow() {
 	mainWindow = new electron.BrowserWindow({
@@ -142,6 +150,8 @@ electron.ipcMain.handle("login", function (event, username, password) {
 						...data
 					});
 
+					userInfo = data;
+
 					mainWindow.loadFile(path.join(__dirname, "src", "views", "games.html"));
 				} catch (error) {
 					reject(error);
diff --git a/src/update.js b/src/update.js
new file mode 100644
index 0000000..fe19fb4
--- /dev/null
+++ b/src/update.js
@@ -0,0 +1,39 @@
+const path = require("node:path");
+const fs = require("node:fs");
+const crypto = require("node:crypto");
+
+function checkFileAgainstSHA1(baseDirectory, fileEntry) {
+	return new Promise(function (resolve, reject) {
+		let filePath = path.join(baseDirectory, fileEntry.name);
+
+		if (!fs.existsSync(filePath)) {
+			return resolve({
+				"entry": fileEntry,
+				"ok": false
+			});
+		}
+
+		let hash = crypto.createHash("sha1");
+		hash.setEncoding("hex");
+
+		let fileInputStream = fs.createReadStream(filePath);
+
+		hash.on("readable", function () {
+			let data = hash.read();
+			if (data) {
+				resolve({
+					"entry": fileEntry,
+					"ok": data == fileEntry.hash
+				});
+			}
+		});
+
+		fileInputStream.pipe(hash);
+	});
+}
+
+module.exports = {
+	"checkFiles": function (manifest) {
+
+	}
+};