From 543a85316e82e284ff354f430df683dcae60140f Mon Sep 17 00:00:00 2001
From: Cody Henthorne <cody@signal.org>
Date: Fri, 7 Jun 2024 13:02:44 -0400
Subject: [PATCH] Improve FCM check clock skew handling.

---
 .../java/org/thoughtcrime/securesms/ApplicationContext.java | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/app/src/main/java/org/thoughtcrime/securesms/ApplicationContext.java b/app/src/main/java/org/thoughtcrime/securesms/ApplicationContext.java
index 8af310166e..90465469ef 100644
--- a/app/src/main/java/org/thoughtcrime/securesms/ApplicationContext.java
+++ b/app/src/main/java/org/thoughtcrime/securesms/ApplicationContext.java
@@ -386,9 +386,11 @@ public class ApplicationContext extends MultiDexApplication implements AppForegr
 
   private void initializeFcmCheck() {
     if (SignalStore.account().isRegistered()) {
-      long nextSetTime = SignalStore.account().getFcmTokenLastSetTime() + TimeUnit.HOURS.toMillis(6);
+      long lastSetTime = SignalStore.account().getFcmTokenLastSetTime();
+      long nextSetTime = lastSetTime + TimeUnit.HOURS.toMillis(6);
+      long now         = System.currentTimeMillis();
 
-      if (SignalStore.account().getFcmToken() == null || nextSetTime <= System.currentTimeMillis()) {
+      if (SignalStore.account().getFcmToken() == null || nextSetTime <= now || lastSetTime > now) {
         AppDependencies.getJobManager().add(new FcmRefreshJob());
       }
     }