fix(auth): prevent integer overflow in logout timer using safeTimeout

frontend/src/api/utils.ts

@@ -91,3 +91,23 @@ export function createURL(endpoint: string, searchParams = {}): string {
 
   return url.toString();
 }
+
+export function setSafeTimeout(callback: () => void, delay: number): number {
+  const MAX_DELAY = 86_400_000;
+  let remaining = delay;
+  let timerId: number;
+
+  function scheduleNext() {
+    if (remaining <= MAX_DELAY) {
+      timerId = window.setTimeout(callback, remaining);
+    } else {
+      timerId = window.setTimeout(() => {
+        remaining -= MAX_DELAY;
+        scheduleNext();
+      }, MAX_DELAY);
+    }
+  }
+
+  scheduleNext();
+  return timerId;
+}

frontend/src/utils/auth.ts

@@ -4,6 +4,7 @@ import type { JwtPayload } from "jwt-decode";
 import { jwtDecode } from "jwt-decode";
 import { baseURL, noAuth } from "./constants";
 import { StatusError } from "@/api/utils";
+import { setSafeTimeout } from "@/api/utils";
 
 export function parseToken(token: string) {
   // falsy or malformed jwt will throw InvalidTokenError
@@ -22,10 +23,11 @@ export function parseToken(token: string) {
   }
 
   const expiresAt = new Date(data.exp! * 1000);
+  const timeout = expiresAt.getTime() - Date.now();
   authStore.setLogoutTimer(
-    window.setTimeout(() => {
+    setSafeTimeout(() => {
       logout("inactivity");
-    }, expiresAt.getTime() - Date.now())
+    }, timeout)
   );
 }