From f2533ac4b76cfbac68644588066ba183da0878ad Mon Sep 17 00:00:00 2001
From: Greyson Parrelli <greyson@signal.org>
Date: Fri, 23 Jul 2021 07:41:09 -0400
Subject: [PATCH] Fallback to legacy sends upon getting a 401 during sender
 key.

---
 .../org/thoughtcrime/securesms/messages/GroupSendUtil.java    | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/app/src/main/java/org/thoughtcrime/securesms/messages/GroupSendUtil.java b/app/src/main/java/org/thoughtcrime/securesms/messages/GroupSendUtil.java
index 5568544eea..107d7b910a 100644
--- a/app/src/main/java/org/thoughtcrime/securesms/messages/GroupSendUtil.java
+++ b/app/src/main/java/org/thoughtcrime/securesms/messages/GroupSendUtil.java
@@ -35,6 +35,7 @@ import org.whispersystems.signalservice.api.messages.SignalServiceDataMessage;
 import org.whispersystems.signalservice.api.messages.SignalServiceTypingMessage;
 import org.whispersystems.signalservice.api.push.DistributionId;
 import org.whispersystems.signalservice.api.push.SignalServiceAddress;
+import org.whispersystems.signalservice.internal.push.exceptions.InvalidUnidentifiedAccessHeaderException;
 import org.whispersystems.signalservice.internal.push.http.CancelationSignal;
 import org.whispersystems.signalservice.internal.push.http.PartialSendCompleteListener;
 
@@ -206,6 +207,9 @@ public final class GroupSendUtil {
         if (sendOperation.shouldIncludeInMessageLog()) {
           DatabaseFactory.getMessageLogDatabase(context).insertIfPossible(sendOperation.getSentTimestamp(), senderKeyTargets, results, sendOperation.getContentHint(), sendOperation.getRelatedMessageId());
         }
+      } catch (InvalidUnidentifiedAccessHeaderException e) {
+        Log.w(TAG, "Someone had a bad UD header. Falling back to legacy sends.", e);
+        legacyTargets.addAll(senderKeyTargets);
       } catch (NoSessionException e) {
         Log.w(TAG, "No session. Falling back to legacy sends.", e);
         legacyTargets.addAll(senderKeyTargets);