From b5d4cac90a27103bbc40cd8db0555908745f4517 Mon Sep 17 00:00:00 2001
From: Greyson Parrelli <greyson@signal.org>
Date: Thu, 21 Jun 2018 08:13:10 -0700
Subject: [PATCH] Send/receive expiration times for group updates.

This particularly helps with the bug where people who were newly added
to a group wouldn't receive an expiration timer until the first message
was sent.
---
 src/org/thoughtcrime/securesms/jobs/PushDecryptJob.java   | 5 +++++
 src/org/thoughtcrime/securesms/jobs/PushGroupSendJob.java | 1 +
 2 files changed, 6 insertions(+)

diff --git a/src/org/thoughtcrime/securesms/jobs/PushDecryptJob.java b/src/org/thoughtcrime/securesms/jobs/PushDecryptJob.java
index 3ecc56176d..e433cdf6e5 100644
--- a/src/org/thoughtcrime/securesms/jobs/PushDecryptJob.java
+++ b/src/org/thoughtcrime/securesms/jobs/PushDecryptJob.java
@@ -380,9 +380,14 @@ public class PushDecryptJob extends ContextJob {
   private void handleGroupMessage(@NonNull SignalServiceEnvelope envelope,
                                   @NonNull SignalServiceDataMessage message,
                                   @NonNull Optional<Long> smsMessageId)
+      throws MmsException
   {
     GroupMessageProcessor.process(context, envelope, message, false);
 
+    if (message.getExpiresInSeconds() != 0 && message.getExpiresInSeconds() != getMessageDestination(envelope, message).getExpireMessages()) {
+      handleExpirationUpdate(envelope, message, Optional.absent());
+    }
+
     if (smsMessageId.isPresent()) {
       DatabaseFactory.getSmsDatabase(context).deleteMessage(smsMessageId.get());
     }
diff --git a/src/org/thoughtcrime/securesms/jobs/PushGroupSendJob.java b/src/org/thoughtcrime/securesms/jobs/PushGroupSendJob.java
index af31833c79..6f1f824f45 100644
--- a/src/org/thoughtcrime/securesms/jobs/PushGroupSendJob.java
+++ b/src/org/thoughtcrime/securesms/jobs/PushGroupSendJob.java
@@ -168,6 +168,7 @@ public class PushGroupSendJob extends PushSendJob implements InjectableType {
       SignalServiceGroup        group            = new SignalServiceGroup(type, GroupUtil.getDecodedId(groupId), groupContext.getName(), groupContext.getMembersList(), avatar);
       SignalServiceDataMessage  groupDataMessage = SignalServiceDataMessage.newBuilder()
                                                                            .withTimestamp(message.getSentTimeMillis())
+                                                                           .withExpiration(message.getRecipient().getExpireMessages())
                                                                            .asGroupMessage(group)
                                                                            .build();