feat: add self sending syncTarget messages

app/src/main/java/org/thoughtcrime/securesms/database/SmsDatabase.java

@@ -686,6 +686,15 @@ public class SmsDatabase extends MessagingDatabase {
     return insertMessageInbox(message, Types.BASE_INBOX_TYPE, serverTimestamp);
   }
 
+  public Optional<InsertResult> insertMessageOutbox(long threadId, OutgoingTextMessage message, long serverTimestamp) {
+    long messageId = insertMessageOutbox(threadId, message, false, serverTimestamp, null);
+    if (messageId == -1) {
+      return Optional.absent();
+    }
+    markAsSent(messageId, true);
+    return Optional.fromNullable(new InsertResult(messageId, threadId));
+  }
+
   public long insertMessageOutbox(long threadId, OutgoingTextMessage message,
                                   boolean forceSms, long date, InsertListener insertListener)
   {
@@ -716,9 +725,17 @@ public class SmsDatabase extends MessagingDatabase {
     contentValues.put(DELIVERY_RECEIPT_COUNT, Stream.of(earlyDeliveryReceipts.values()).mapToLong(Long::longValue).sum());
     contentValues.put(READ_RECEIPT_COUNT, Stream.of(earlyReadReceipts.values()).mapToLong(Long::longValue).sum());
 
+    SQLiteDatabase readDb        = databaseHelper.getReadableDatabase();
+    Cursor existingRecord = readDb.query(TABLE_NAME, null, String.format("%s = ? AND %s = ? AND %s = ?",ADDRESS, THREAD_ID, DATE_SENT),
+            new String[] { address.serialize(), Long.toString(threadId), Long.toString(date) }, null, null, null);
+    int existingRecordCount = existingRecord.getCount();
+    if (existingRecordCount > 0) {
+      // return -1 because record exists from Address to ThreadID with the same date sent (probably sent from us)
+      return -1;
+    }
+
     SQLiteDatabase db        = databaseHelper.getWritableDatabase();
     long           messageId = db.insert(TABLE_NAME, ADDRESS, contentValues);
-
     if (insertListener != null) {
       insertListener.onComplete();
     }

app/src/main/java/org/thoughtcrime/securesms/jobs/PushDecryptJob.java

@@ -28,6 +28,7 @@ import org.session.libsignal.metadata.ProtocolNoSessionException;
 import org.session.libsignal.metadata.ProtocolUntrustedIdentityException;
 import org.session.libsignal.metadata.SelfSendException;
 import org.session.libsignal.service.loki.api.crypto.SessionProtocol;
+import org.session.libsignal.service.loki.utilities.HexEncodingKt;
 import org.session.libsignal.utilities.PromiseUtilities;
 import org.thoughtcrime.securesms.ApplicationContext;
 
@@ -568,6 +569,8 @@ public class PushDecryptJob extends BaseJob implements InjectableType {
   {
     Recipient originalRecipient = getMessageDestination(content, message);
     Recipient masterRecipient = getMessageMasterDestination(content.getSender());
+    String      syncTarget        = message.getSyncTarget().orNull();
+
 
     notifyTypingStoppedFromIncomingMessage(masterRecipient, content.getSender(), content.getSenderDevice());
 
@@ -582,10 +585,13 @@ public class PushDecryptJob extends BaseJob implements InjectableType {
       masterAddress = getMessageMasterDestination(content.getSender()).getAddress();
     }
 
+    if (syncTarget != null && !syncTarget.isEmpty()) {
+//      OutgoingMediaMessage mediaMessage = new OutgoingMediaMessage(masterAddress, message.getTimestamp(), -1,
+//              message.getExpiresInSeconds() * 1000L, false, )
+    } else {
       IncomingMediaMessage mediaMessage = new IncomingMediaMessage(masterAddress, message.getTimestamp(), -1,
               message.getExpiresInSeconds() * 1000L, false, content.isNeedsReceipt(), message.getBody(), message.getGroupInfo(), message.getAttachments(),
               quote, sharedContacts, linkPreviews, sticker);
-
       MmsDatabase database = DatabaseFactory.getMmsDatabase(context);
       database.beginTransaction();
 
@@ -654,6 +660,7 @@ public class PushDecryptJob extends BaseJob implements InjectableType {
         }
       }
     }
+  }
 
   private long handleSynchronizeSentExpirationUpdate(@NonNull SentTranscriptMessage message) throws MmsException {
     MmsDatabase database  = DatabaseFactory.getMmsDatabase(context);
@@ -769,6 +776,7 @@ public class PushDecryptJob extends BaseJob implements InjectableType {
     String      body              = message.getBody().isPresent() ? message.getBody().get() : "";
     Recipient   originalRecipient = getMessageDestination(content, message);
     Recipient   masterRecipient   = getMessageMasterDestination(content.getSender());
+    String      syncTarget        = message.getSyncTarget().orNull();
 
     if (message.getExpiresInSeconds() != originalRecipient.getExpireMessages()) {
       handleExpirationUpdate(content, message, Optional.absent());
@@ -778,15 +786,46 @@ public class PushDecryptJob extends BaseJob implements InjectableType {
 
     if (smsMessageId.isPresent() && !message.getGroupInfo().isPresent()) {
       threadId = database.updateBundleMessageBody(smsMessageId.get(), body).second;
+    } else if (syncTarget != null && !syncTarget.isEmpty()) {
+      Address targetAddress = Address.fromSerialized(syncTarget);
+
+      OutgoingTextMessage tm = new OutgoingTextMessage(Recipient.from(context, targetAddress, false),
+              body, message.getExpiresInSeconds(), -1);
+
+      // Ignore the message if it has no body
+      if (tm.getMessageBody().length() == 0) { return; }
+
+      // Check if we have the thread already
+      long threadID = DatabaseFactory.getLokiThreadDatabase(context).getThreadID(syncTarget);
+
+
+      // Insert the message into the database
+      Optional<InsertResult> insertResult;
+      insertResult = database.insertMessageOutbox(threadID, tm, content.getTimestamp());
+
+      if (insertResult.isPresent()) {
+        threadId = insertResult.get().getThreadId();
+      }
+
+      if (smsMessageId.isPresent()) database.deleteMessage(smsMessageId.get());
+
+      if (threadId != null) {
+        messageNotifier.updateNotification(context, threadId);
+      }
+
+      if (insertResult.isPresent()) {
+        InsertResult result = insertResult.get();
+
+        // Loki - Cache the user hex encoded public key (for mentions)
+        MentionManagerUtilities.INSTANCE.populateUserPublicKeyCacheIfNeeded(result.getThreadId(), context);
+        MentionsManager.shared.cache(content.getSender(), result.getThreadId());
+      }
+
     } else {
       notifyTypingStoppedFromIncomingMessage(masterRecipient, content.getSender(), content.getSenderDevice());
 
       Address masterAddress = masterRecipient.getAddress();
 
-      if (message.isGroupMessage()) {
-        masterAddress = getMessageMasterDestination(content.getSender()).getAddress();
-      }
-
       IncomingTextMessage tm = new IncomingTextMessage(masterAddress,
                                                        content.getSenderDevice(),
                                                        message.getTimestamp(), body,

app/src/main/java/org/thoughtcrime/securesms/jobs/PushGroupSendJob.java

@@ -15,6 +15,7 @@ import org.session.libsession.messaging.threads.recipients.Recipient;
 import org.session.libsession.messaging.threads.Address;
 import org.session.libsession.utilities.GroupUtil;
 
+import org.session.libsession.utilities.TextSecurePreferences;
 import org.thoughtcrime.securesms.ApplicationContext;
 import org.thoughtcrime.securesms.crypto.UnidentifiedAccessUtil;
 import org.thoughtcrime.securesms.database.DatabaseFactory;
@@ -143,6 +144,9 @@ public class PushGroupSendJob extends PushSendJob implements InjectableType {
     List<NetworkFailure>      existingNetworkFailures    = message.getNetworkFailures();
     List<IdentityKeyMismatch> existingIdentityMismatches = message.getIdentityKeyMismatches();
 
+    String                    userPublicKey              = TextSecurePreferences.getLocalNumber(context);
+    SignalServiceAddress      localAddress               = new SignalServiceAddress(userPublicKey);
+
     if (database.isSent(messageId)) {
       log(TAG, "Message " + messageId + " was already sent. Ignoring.");
       return;
@@ -190,6 +194,22 @@ public class PushGroupSendJob extends PushSendJob implements InjectableType {
       }
 
       if (existingNetworkFailures.isEmpty() && networkFailures.isEmpty() && identityMismatches.isEmpty() && existingIdentityMismatches.isEmpty()) {
+        Address address = message.getRecipient().getAddress();
+        if (!address.isOpenGroup()) {
+          try {
+            SignalServiceDataMessage selfSend = getDataMessage(address, message)
+                    .withSyncTarget(address.toGroupString())
+                    .build();
+            // send to ourselves to sync multi-device
+            Optional<UnidentifiedAccessPair> syncAccess  = UnidentifiedAccessUtil.getAccessForSync(context);
+            SendMessageResult selfSendResult = messageSender.sendMessage(messageId, localAddress, syncAccess, selfSend);
+            if (selfSendResult.getLokiAPIError() != null) {
+              throw selfSendResult.getLokiAPIError();
+            }
+          } catch (Exception e) {
+            Log.e("Loki", "Error sending message to ourselves", e);
+          }
+        }
         database.markAsSent(messageId, true);
 
         markAttachmentsUploaded(messageId, message.getAttachments());
@@ -238,25 +258,18 @@ public class PushGroupSendJob extends PushSendJob implements InjectableType {
 //      return results;
 //    }
 
-    String                                     groupId            = address.toGroupString();
-    Optional<byte[]>                           profileKey         = getProfileKey(message.getRecipient());
-    Optional<Quote>                            quote              = getQuoteFor(message);
-    Optional<SignalServiceDataMessage.Sticker> sticker            = getStickerFor(message);
-    List<SharedContact>                        sharedContacts     = getSharedContactsFor(message);
-    List<Preview>                              previews           = getPreviewsFor(message);
     List<SignalServiceAddress>                 addresses          = Stream.of(destinations).map(this::getPushAddress).toList();
-    List<Attachment>                           attachments        = Stream.of(message.getAttachments()).filterNot(Attachment::isSticker).toList();
-    List<SignalServiceAttachment>              attachmentPointers = getAttachmentPointersFor(attachments);
-
     List<Optional<UnidentifiedAccessPair>> unidentifiedAccess = Stream.of(addresses)
                                                                       .map(a -> Address.Companion.fromSerialized(a.getNumber()))
                                                                       .map(a -> Recipient.from(context, a, false))
                                                                       .map(recipient -> UnidentifiedAccessUtil.getAccessFor(context, recipient))
                                                                       .toList();
 
-    SignalServiceGroup.GroupType groupType = address.isOpenGroup() ? SignalServiceGroup.GroupType.PUBLIC_CHAT : SignalServiceGroup.GroupType.SIGNAL;
-
     if (message.isGroup() && address.isClosedGroup()) {
+      SignalServiceGroup.GroupType groupType = address.isOpenGroup() ? SignalServiceGroup.GroupType.PUBLIC_CHAT : SignalServiceGroup.GroupType.SIGNAL;
+      String                                     groupId            = address.toGroupString();
+      List<Attachment>                           attachments        = Stream.of(message.getAttachments()).filterNot(Attachment::isSticker).toList();
+      List<SignalServiceAttachment>              attachmentPointers = getAttachmentPointersFor(attachments);
       // Loki - Only send GroupUpdate or GroupQuit messages to closed groups
       OutgoingGroupMediaMessage groupMessage     = (OutgoingGroupMediaMessage) message;
       GroupContext              groupContext     = groupMessage.getGroupContext();
@@ -271,8 +284,27 @@ public class PushGroupSendJob extends PushSendJob implements InjectableType {
 
       return messageSender.sendMessage(messageId, addresses, unidentifiedAccess, groupDataMessage);
     } else {
+      SignalServiceDataMessage groupMessage = getDataMessage(address, message).build();
+
+      return messageSender.sendMessage(messageId, addresses, unidentifiedAccess, groupMessage);
+    }
+  }
+
+  public SignalServiceDataMessage.Builder getDataMessage(Address address, OutgoingMediaMessage message) {
+
+    SignalServiceGroup.GroupType groupType = address.isOpenGroup() ? SignalServiceGroup.GroupType.PUBLIC_CHAT : SignalServiceGroup.GroupType.SIGNAL;
+
+    String                                     groupId            = address.toGroupString();
+    Optional<byte[]>                           profileKey         = getProfileKey(message.getRecipient());
+    Optional<Quote>                            quote              = getQuoteFor(message);
+    Optional<SignalServiceDataMessage.Sticker> sticker            = getStickerFor(message);
+    List<SharedContact>                        sharedContacts     = getSharedContactsFor(message);
+    List<Preview>                              previews           = getPreviewsFor(message);
+    List<Attachment>                           attachments        = Stream.of(message.getAttachments()).filterNot(Attachment::isSticker).toList();
+    List<SignalServiceAttachment>              attachmentPointers = getAttachmentPointersFor(attachments);
+
     SignalServiceGroup       group        = new SignalServiceGroup(GroupUtil.getDecodedGroupIDAsData(groupId), groupType);
-      SignalServiceDataMessage groupMessage = SignalServiceDataMessage.newBuilder()
+    return SignalServiceDataMessage.newBuilder()
             .withTimestamp(message.getSentTimeMillis())
             .asGroupMessage(group)
             .withAttachments(attachmentPointers)
@@ -283,11 +315,7 @@ public class PushGroupSendJob extends PushSendJob implements InjectableType {
             .withQuote(quote.orNull())
             .withSticker(sticker.orNull())
             .withSharedContacts(sharedContacts)
-                                                                      .withPreviews(previews)
+            .withPreviews(previews);
-                                                                      .build();
-
-      return messageSender.sendMessage(messageId, addresses, unidentifiedAccess, groupMessage);
-    }
   }
 
   public static class Factory implements Job.Factory<PushGroupSendJob> {

app/src/main/java/org/thoughtcrime/securesms/jobs/PushMediaSendJob.java

@@ -245,7 +245,9 @@ public class PushMediaSendJob extends PushSendJob implements InjectableType {
   {
     try {
       Recipient                                  recipient          = Recipient.from(context, destination, false);
+      String                                     userPublicKey      = TextSecurePreferences.getLocalNumber(context);
       SignalServiceAddress                       address            = getPushAddress(recipient.getAddress());
+      SignalServiceAddress                       localAddress       = new SignalServiceAddress(userPublicKey);
       List<Attachment>                           attachments        = Stream.of(message.getAttachments()).filterNot(Attachment::isSticker).toList();
       List<SignalServiceAttachment>              serviceAttachments = getAttachmentPointersFor(attachments);
       Optional<byte[]>                           profileKey         = getProfileKey(message.getRecipient());
@@ -254,6 +256,8 @@ public class PushMediaSendJob extends PushSendJob implements InjectableType {
       List<SharedContact>                        sharedContacts     = getSharedContactsFor(message);
       List<Preview>                              previews           = getPreviewsFor(message);
 
+      Optional<UnidentifiedAccessPair> unidentifiedAccessPair = UnidentifiedAccessUtil.getAccessFor(context, recipient);
+
       SignalServiceDataMessage mediaMessage = SignalServiceDataMessage.newBuilder()
                                                                       .withBody(message.getBody())
                                                                       .withAttachments(serviceAttachments)
@@ -267,6 +271,20 @@ public class PushMediaSendJob extends PushSendJob implements InjectableType {
                                                                       .asExpirationUpdate(message.isExpirationUpdate())
                                                                       .build();
 
+      SignalServiceDataMessage mediaSelfSendMessage = SignalServiceDataMessage.newBuilder()
+              .withBody(message.getBody())
+              .withAttachments(serviceAttachments)
+              .withTimestamp(message.getSentTimeMillis())
+              .withSyncTarget(destination.serialize())
+              .withExpiration((int)(message.getExpiresIn() / 1000))
+              .withProfileKey(profileKey.orNull())
+              .withQuote(quote.orNull())
+              .withSticker(sticker.orNull())
+              .withSharedContacts(sharedContacts)
+              .withPreviews(previews)
+              .asExpirationUpdate(message.isExpirationUpdate())
+              .build();
+
       if (SessionMetaProtocol.shared.isNoteToSelf(address.getNumber())) {
         // Loki - Device link messages don't go through here
         Optional<UnidentifiedAccessPair> syncAccess  = UnidentifiedAccessUtil.getAccessForSync(context);
@@ -275,11 +293,24 @@ public class PushMediaSendJob extends PushSendJob implements InjectableType {
         messageSender.sendMessage(syncMessage, syncAccess);
         return syncAccess.isPresent();
       } else {
-        SendMessageResult result = messageSender.sendMessage(messageId, address, UnidentifiedAccessUtil.getAccessFor(context, recipient), mediaMessage);
+        SendMessageResult result = messageSender.sendMessage(messageId, address, unidentifiedAccessPair, mediaMessage);
         if (result.getLokiAPIError() != null) {
           throw result.getLokiAPIError();
         } else {
-          return result.getSuccess().isUnidentified();
+          boolean isUnidentified = result.getSuccess().isUnidentified();
+
+          try {
+            // send to ourselves to sync multi-device
+            Optional<UnidentifiedAccessPair> syncAccess  = UnidentifiedAccessUtil.getAccessForSync(context);
+            SendMessageResult selfSendResult = messageSender.sendMessage(messageId, localAddress, syncAccess, mediaSelfSendMessage);
+            if (selfSendResult.getLokiAPIError() != null) {
+              throw selfSendResult.getLokiAPIError();
+            }
+          } catch (Exception e) {
+            Log.e("Loki", "Error sending message to ourselves", e);
+          }
+
+          return isUnidentified;
         }
       }
     } catch (UnregisteredUserException e) {

app/src/main/java/org/thoughtcrime/securesms/jobs/PushTextSendJob.java

@@ -3,6 +3,7 @@ package org.thoughtcrime.securesms.jobs;
 import androidx.annotation.NonNull;
 
 import org.session.libsession.messaging.jobs.Data;
+import org.session.libsignal.service.api.crypto.UnidentifiedAccess;
 import org.session.libsignal.utilities.logging.Log;
 
 import org.session.libsession.messaging.threads.Address;
@@ -192,8 +193,10 @@ public class PushTextSendJob extends PushSendJob implements InjectableType {
       throws UntrustedIdentityException, InsecureFallbackApprovalException, RetryLaterException, SnodeAPI.Error
   {
     try {
+      String                           userPublicKey      = TextSecurePreferences.getLocalNumber(context);
       Recipient                        recipient          = Recipient.from(context, destination, false);
       SignalServiceAddress             address            = getPushAddress(recipient.getAddress());
+      SignalServiceAddress             localAddress       = new SignalServiceAddress(userPublicKey);
       Optional<byte[]>                 profileKey         = getProfileKey(recipient);
       Optional<UnidentifiedAccessPair> unidentifiedAccess = UnidentifiedAccessUtil.getAccessFor(context, recipient);
 
@@ -209,7 +212,15 @@ public class PushTextSendJob extends PushSendJob implements InjectableType {
               .withBody(message.getBody())
               .withExpiration((int)(message.getExpiresIn() / 1000))
               .withProfileKey(profileKey.orNull())
-//                                                                           .withPreKeyBundle(preKeyBundle)
+              .asEndSessionMessage(message.isEndSession())
+              .build();
+
+      SignalServiceDataMessage textSecureSelfSendMessage = SignalServiceDataMessage.newBuilder()
+              .withTimestamp(message.getDateSent())
+              .withBody(message.getBody())
+              .withSyncTarget(destination.serialize())
+              .withExpiration((int)(message.getExpiresIn() / 1000))
+              .withProfileKey(profileKey.orNull())
               .asEndSessionMessage(message.isEndSession())
               .build();
 
@@ -225,7 +236,19 @@ public class PushTextSendJob extends PushSendJob implements InjectableType {
         if (result.getLokiAPIError() != null) {
           throw result.getLokiAPIError();
         } else {
-          return result.getSuccess().isUnidentified();
+          boolean isUnidentified = result.getSuccess().isUnidentified();
+
+          try {
+            // send to ourselves to sync multi-device
+            Optional<UnidentifiedAccessPair> syncAccess  = UnidentifiedAccessUtil.getAccessForSync(context);
+            SendMessageResult selfSendResult = messageSender.sendMessage(messageId, localAddress, syncAccess, textSecureSelfSendMessage);
+            if (selfSendResult.getLokiAPIError() != null) {
+              throw selfSendResult.getLokiAPIError();
+            }
+          } catch (Exception e) {
+            Log.e("Loki", "Error sending message to ourselves", e);
+          }
+          return isUnidentified;
         }
       }
     } catch (UnregisteredUserException e) {

app/src/main/java/org/thoughtcrime/securesms/loki/protocol/ClosedGroupUpdateMessageSendJob.kt

@@ -2,6 +2,7 @@ package org.thoughtcrime.securesms.loki.protocol
 
 import com.google.protobuf.ByteString
 import org.session.libsession.messaging.jobs.Data
+import org.session.libsignal.libsignal.util.guava.Optional
 import org.thoughtcrime.securesms.ApplicationContext
 import org.thoughtcrime.securesms.crypto.UnidentifiedAccessUtil
 import org.thoughtcrime.securesms.jobmanager.Job
@@ -128,7 +129,7 @@ class ClosedGroupUpdateMessageSendJob private constructor(parameters: Parameters
             // isClosedGroup can always be false as it's only used in the context of legacy closed groups
             messageSender.sendMessage(0, address, udAccess.get().targetUnidentifiedAccess,
                     Date().time, serializedContentMessage, false, ttl, false,
-                    useFallbackEncryption, false, false, false)
+                    useFallbackEncryption, false, false, Optional.absent())
         } catch (e: Exception) {
             Log.d("Loki", "Failed to send closed group update message to: $destination due to error: $e.")
         }

app/src/main/java/org/thoughtcrime/securesms/loki/protocol/ClosedGroupUpdateMessageSendJobV2.kt

@@ -9,6 +9,7 @@ import org.session.libsession.messaging.jobs.Data
 import org.session.libsignal.libsignal.ecc.DjbECPrivateKey
 import org.session.libsignal.libsignal.ecc.DjbECPublicKey
 import org.session.libsignal.libsignal.ecc.ECKeyPair
+import org.session.libsignal.libsignal.util.guava.Optional
 import org.session.libsignal.service.api.push.SignalServiceAddress
 import org.session.libsignal.service.internal.push.SignalServiceProtos
 import org.session.libsignal.service.loki.protocol.meta.TTLUtilities
@@ -221,7 +222,7 @@ class ClosedGroupUpdateMessageSendJobV2 private constructor(parameters: Paramete
             // isClosedGroup can always be false as it's only used in the context of legacy closed groups
             messageSender.sendMessage(0, address, udAccess.get().targetUnidentifiedAccess,
                     Date().time, serializedContentMessage, false, ttl, false,
-                    true, false, false, false)
+                    true, false, false, Optional.absent())
         } catch (e: Exception) {
             Log.d("Loki", "Failed to send closed group update message to: $destination due to error: $e.")
         }

app/src/main/java/org/thoughtcrime/securesms/loki/protocol/NullMessageSendJob.kt

@@ -10,6 +10,7 @@ import org.thoughtcrime.securesms.jobmanager.impl.NetworkConstraint
 import org.thoughtcrime.securesms.jobs.BaseJob
 import org.session.libsignal.utilities.logging.Log
 import org.session.libsession.messaging.threads.recipients.Recipient
+import org.session.libsignal.libsignal.util.guava.Optional
 import org.session.libsignal.service.api.push.SignalServiceAddress
 import org.session.libsignal.service.internal.push.SignalServiceProtos
 import org.session.libsignal.service.loki.protocol.meta.TTLUtilities
@@ -56,7 +57,7 @@ class NullMessageSendJob private constructor(parameters: Parameters, private val
         try {
             messageSender.sendMessage(0, address, udAccess.get().targetUnidentifiedAccess,
                 Date().time, serializedContentMessage, false, ttl, false,
-                false, false, false, false)
+                false, false, false, Optional.absent())
         } catch (e: Exception) {
             Log.d("Loki", "Failed to send null message to: $publicKey due to error: $e.")
             throw e

app/src/main/java/org/thoughtcrime/securesms/sms/IncomingEncryptedMessage.java

@@ -6,11 +6,6 @@ public class IncomingEncryptedMessage extends IncomingTextMessage {
     super(base, newBody);
   }
 
-  @Override
-  public IncomingTextMessage withMessageBody(String body) {
-    return new IncomingEncryptedMessage(this, body);
-  }
-
     @Override
   public boolean isSecureMessage() {
     return true;

app/src/main/java/org/thoughtcrime/securesms/sms/IncomingEndSessionMessage.java

@@ -10,11 +10,6 @@ public class IncomingEndSessionMessage extends IncomingTextMessage {
     super(base, newBody);
   }
 
-  @Override
-  public IncomingEndSessionMessage withMessageBody(String messageBody) {
-    return new IncomingEndSessionMessage(this, messageBody);
-  }
-
     @Override
   public boolean isEndSession() {
     return true;

app/src/main/java/org/thoughtcrime/securesms/sms/IncomingGroupMessage.java

@@ -11,11 +11,6 @@ public class IncomingGroupMessage extends IncomingTextMessage {
     this.groupContext = groupContext;
   }
 
-  @Override
-  public IncomingGroupMessage withMessageBody(String body) {
-    return new IncomingGroupMessage(this, groupContext, body);
-  }
-
     @Override
   public boolean isGroup() {
     return true;

app/src/main/java/org/thoughtcrime/securesms/sms/IncomingPreKeyBundleMessage.java

@@ -9,11 +9,6 @@ public class IncomingPreKeyBundleMessage extends IncomingTextMessage {
     this.legacy = legacy;
   }
 
-  @Override
-  public IncomingPreKeyBundleMessage withMessageBody(String messageBody) {
-    return new IncomingPreKeyBundleMessage(this, messageBody, legacy);
-  }
-
     @Override
   public boolean isLegacyPreKeyBundle() {
     return legacy;

app/src/main/java/org/thoughtcrime/securesms/sms/IncomingTextMessage.java

@@ -175,10 +175,6 @@ public class IncomingTextMessage implements Parcelable {
     return message;
   }
 
-  public IncomingTextMessage withMessageBody(String message) {
-    return new IncomingTextMessage(this, message);
-  }
-
   public Address getSender() {
     return sender;
   }
@@ -250,7 +246,6 @@ public class IncomingTextMessage implements Parcelable {
   public boolean isUnidentified() {
     return unidentified;
   }
-
   @Override
   public int describeContents() {
     return 0;

libsession/src/main/java/org/session/libsession/messaging/threads/Address.kt

@@ -152,6 +152,7 @@ class Address private constructor(address: String) : Parcelable, Comparable<Addr
         val UNKNOWN = Address("Unknown")
         private val TAG = Address::class.java.simpleName
         private val cachedFormatter = AtomicReference<Pair<String, ExternalAddressFormatter>>()
+        @JvmStatic
         fun fromSerialized(serialized: String): Address {
             return Address(serialized)
         }

libsignal/src/main/java/org/session/libsignal/service/api/SignalServiceMessageSender.java

@@ -26,10 +26,6 @@ import org.session.libsignal.service.api.messages.SignalServiceDataMessage;
 import org.session.libsignal.service.api.messages.SignalServiceGroup;
 import org.session.libsignal.service.api.messages.SignalServiceReceiptMessage;
 import org.session.libsignal.service.api.messages.SignalServiceTypingMessage;
-import org.session.libsignal.service.api.messages.calls.AnswerMessage;
-import org.session.libsignal.service.api.messages.calls.IceUpdateMessage;
-import org.session.libsignal.service.api.messages.calls.OfferMessage;
-import org.session.libsignal.service.api.messages.calls.SignalServiceCallMessage;
 import org.session.libsignal.service.api.messages.multidevice.BlockedListMessage;
 import org.session.libsignal.service.api.messages.multidevice.ConfigurationMessage;
 import org.session.libsignal.service.api.messages.multidevice.ReadMessage;
@@ -51,7 +47,6 @@ import org.session.libsignal.service.internal.push.PushServiceSocket;
 import org.session.libsignal.service.internal.push.PushTransportDetails;
 import org.session.libsignal.service.internal.push.SignalServiceProtos;
 import org.session.libsignal.service.internal.push.SignalServiceProtos.AttachmentPointer;
-import org.session.libsignal.service.internal.push.SignalServiceProtos.CallMessage;
 import org.session.libsignal.service.internal.push.SignalServiceProtos.Content;
 import org.session.libsignal.service.internal.push.SignalServiceProtos.DataMessage;
 import org.session.libsignal.service.internal.push.SignalServiceProtos.GroupContext;
@@ -217,34 +212,14 @@ public class SignalServiceMessageSender {
    * @param recipient The sender of the received message you're acknowledging.
    * @param message The read receipt to deliver.
    * @throws IOException
-   * @throws UntrustedIdentityException
    */
   public void sendReceipt(SignalServiceAddress recipient,
                           Optional<UnidentifiedAccessPair> unidentifiedAccess,
                           SignalServiceReceiptMessage message)
-      throws IOException, UntrustedIdentityException
+      throws IOException {
-  {
     byte[] content = createReceiptContent(message);
     boolean useFallbackEncryption = SessionManagementProtocol.shared.shouldMessageUseFallbackEncryption(message, recipient.getNumber(), store);
-    sendMessage(recipient, getTargetUnidentifiedAccess(unidentifiedAccess), message.getWhen(), content, false, message.getTTL(), useFallbackEncryption, false);
+    sendMessage(recipient, getTargetUnidentifiedAccess(unidentifiedAccess), message.getWhen(), content, false, message.getTTL(), useFallbackEncryption);
-  }
-
-  /**
-   * Send a typing indicator.
-   *
-   * @param recipient The destination
-   * @param message The typing indicator to deliver
-   * @throws IOException
-   * @throws UntrustedIdentityException
-   */
-  public void sendTyping(SignalServiceAddress recipient,
-                         Optional<UnidentifiedAccessPair> unidentifiedAccess,
-                         SignalServiceTypingMessage message)
-      throws IOException, UntrustedIdentityException
-  {
-    byte[] content = createTypingContent(message);
-    boolean useFallbackEncryption = SessionManagementProtocol.shared.shouldMessageUseFallbackEncryption(message, recipient.getNumber(), store);
-    sendMessage(recipient, getTargetUnidentifiedAccess(unidentifiedAccess), message.getTimestamp(), content, true, message.getTTL(), useFallbackEncryption, false);
   }
 
   public void sendTyping(List<SignalServiceAddress>             recipients,
@@ -256,42 +231,24 @@ public class SignalServiceMessageSender {
     sendMessage(0, recipients, getTargetUnidentifiedAccess(unidentifiedAccess), message.getTimestamp(), content, true, message.getTTL(), false, false);
   }
 
-  /**
-   * Send a call setup message to a single recipient.
-   *
-   * @param recipient The message's destination.
-   * @param message The call message.
-   * @throws IOException
-   */
-  public void sendCallMessage(SignalServiceAddress recipient,
-                              Optional<UnidentifiedAccessPair> unidentifiedAccess,
-                              SignalServiceCallMessage message)
-      throws IOException, UntrustedIdentityException
-  {
-    byte[] content = createCallContent(message);
-    boolean useFallbackEncryption = SessionManagementProtocol.shared.shouldMessageUseFallbackEncryption(message, recipient.getNumber(), store);
-    sendMessage(recipient, getTargetUnidentifiedAccess(unidentifiedAccess), System.currentTimeMillis(), content, false, message.getTTL(), useFallbackEncryption, false);
-  }
-
   /**
    * Send a message to a single recipient.
    *
    * @param recipient The message's destination.
    * @param message The message.
-   * @throws UntrustedIdentityException
    * @throws IOException
    */
   public SendMessageResult sendMessage(long                             messageID,
                                        SignalServiceAddress             recipient,
                                        Optional<UnidentifiedAccessPair> unidentifiedAccess,
                                        SignalServiceDataMessage         message)
-      throws UntrustedIdentityException, IOException
+      throws IOException
   {
     byte[]            content               = createMessageContent(message, recipient);
     long              timestamp             = message.getTimestamp();
     boolean           useFallbackEncryption = SessionManagementProtocol.shared.shouldMessageUseFallbackEncryption(message, recipient.getNumber(), store);
     boolean           isClosedGroup         = message.group.isPresent() && message.group.get().getGroupType() == SignalServiceGroup.GroupType.SIGNAL;
-    SendMessageResult result                = sendMessage(messageID, recipient, getTargetUnidentifiedAccess(unidentifiedAccess), timestamp, content, false, message.getTTL(), message.getDeviceLink().isPresent(), useFallbackEncryption, isClosedGroup, false, message.hasVisibleContent());
+    SendMessageResult result                = sendMessage(messageID, recipient, getTargetUnidentifiedAccess(unidentifiedAccess), timestamp, content, false, message.getTTL(), message.getDeviceLink().isPresent(), useFallbackEncryption, isClosedGroup, message.hasVisibleContent(), message.getSyncTarget());
 
 //    // Loki - This shouldn't get invoked for note to self
 //    boolean wouldSignalSendSyncMessage = (result.getSuccess() != null && result.getSuccess().isNeedsSync()) || unidentifiedAccess.isPresent();
@@ -325,8 +282,7 @@ public class SignalServiceMessageSender {
                                              List<SignalServiceAddress>             recipients,
                                              List<Optional<UnidentifiedAccessPair>> unidentifiedAccess,
                                              SignalServiceDataMessage               message)
-      throws IOException, UntrustedIdentityException
+      throws IOException {
-  {
     // Loki - We only need the first recipient in the line below. This is because the recipient is only used to determine
     // whether an attachment is being sent to an open group or not.
     byte[]                  content            = createMessageContent(message, recipients.get(0));
@@ -350,7 +306,7 @@ public class SignalServiceMessageSender {
       for (String device : linkedDevices) {
         SignalServiceAddress deviceAsAddress = new SignalServiceAddress(device);
         boolean useFallbackEncryption = SessionManagementProtocol.shared.shouldMessageUseFallbackEncryption(syncMessage, device, store);
-        sendMessage(deviceAsAddress, Optional.<UnidentifiedAccess>absent(), timestamp, syncMessage, false, message.getTTL(), useFallbackEncryption, true);
+        sendMessage(deviceAsAddress, Optional.<UnidentifiedAccess>absent(), timestamp, syncMessage, false, message.getTTL(), useFallbackEncryption);
       }
     }
 
@@ -392,18 +348,10 @@ public class SignalServiceMessageSender {
     for (String device : linkedDevices) {
       SignalServiceAddress deviceAsAddress = new SignalServiceAddress(device);
       boolean useFallbackEncryption = SessionManagementProtocol.shared.shouldMessageUseFallbackEncryption(message, device, store);
-      sendMessageToPrivateChat(0, deviceAsAddress, Optional.<UnidentifiedAccess>absent(), timestamp, content, false, message.getTTL(), useFallbackEncryption, false, false);
+      // sendMessageToPrivateChat(0, deviceAsAddress, Optional.<UnidentifiedAccess>absent(), timestamp, content, false, message.getTTL(), useFallbackEncryption, false, false);
     }
   }
 
-  public void setSoTimeoutMillis(long soTimeoutMillis) {
-    socket.setSoTimeoutMillis(soTimeoutMillis);
-  }
-
-  public void cancelInFlightRequests() {
-    socket.cancelInFlightRequests();
-  }
-
   public void setMessagePipe(SignalServiceMessagePipe pipe, SignalServiceMessagePipe unidentifiedPipe) {
     this.pipe.set(Optional.fromNullable(pipe));
     this.unidentifiedPipe.set(Optional.fromNullable(unidentifiedPipe));
@@ -452,9 +400,7 @@ public class SignalServiceMessageSender {
                                               result.getUrl());
   }
 
-  private void sendMessage(VerifiedMessage message, Optional<UnidentifiedAccessPair> unidentifiedAccess)
+  private void sendMessage(VerifiedMessage message, Optional<UnidentifiedAccessPair> unidentifiedAccess) {
-      throws IOException, UntrustedIdentityException
-  {
 
   }
 
@@ -494,32 +440,6 @@ public class SignalServiceMessageSender {
   {
     Content.Builder container = Content.newBuilder();
 
-//    if (message.getPreKeyBundle().isPresent()) {
-//      PreKeyBundle preKeyBundle = message.getPreKeyBundle().get();
-//      PreKeyBundleMessage.Builder preKeyBundleMessageBuilder = PreKeyBundleMessage.newBuilder()
-//          .setDeviceId(preKeyBundle.getDeviceId())
-//          .setIdentityKey(ByteString.copyFrom(preKeyBundle.getIdentityKey().serialize()))
-//          .setPreKeyId(preKeyBundle.getPreKeyId())
-//          .setPreKey(ByteString.copyFrom(preKeyBundle.getPreKey().serialize()))
-//          .setSignedKeyId(preKeyBundle.getSignedPreKeyId())
-//          .setSignedKey(ByteString.copyFrom(preKeyBundle.getSignedPreKey().serialize()))
-//          .setSignature(ByteString.copyFrom(preKeyBundle.getSignedPreKeySignature()))
-//          .setIdentityKey(ByteString.copyFrom(preKeyBundle.getIdentityKey().serialize()));
-//      container.setPreKeyBundleMessage(preKeyBundleMessageBuilder);
-//    }
-
-//    if (message.getDeviceLink().isPresent()) {
-//      DeviceLink deviceLink = message.getDeviceLink().get();
-//      SignalServiceProtos.DeviceLinkMessage.Builder deviceLinkMessageBuilder = SignalServiceProtos.DeviceLinkMessage.newBuilder()
-//          .setPrimaryPublicKey(deviceLink.getMasterPublicKey())
-//          .setSecondaryPublicKey(deviceLink.getSlavePublicKey())
-//          .setRequestSignature(ByteString.copyFrom(Objects.requireNonNull(deviceLink.getRequestSignature())));
-//      if (deviceLink.getAuthorizationSignature() != null) {
-//          deviceLinkMessageBuilder.setAuthorizationSignature(ByteString.copyFrom(deviceLink.getAuthorizationSignature()));
-//      }
-//      container.setDeviceLinkMessage(deviceLinkMessageBuilder.build());
-//    }
-
     DataMessage.Builder builder = DataMessage.newBuilder();
     List<AttachmentPointer> pointers = createAttachmentPointers(message.getAttachments(), recipient);
 
@@ -559,6 +479,10 @@ public class SignalServiceMessageSender {
       builder.setProfileKey(ByteString.copyFrom(message.getProfileKey().get()));
     }
 
+    if (message.getSyncTarget().isPresent()) {
+      builder.setSyncTarget(message.getSyncTarget().get());
+    }
+
     if (message.getQuote().isPresent()) {
       DataMessage.Quote.Builder quoteBuilder = DataMessage.Quote.newBuilder()
           .setId(message.getQuote().get().getId())
@@ -636,40 +560,6 @@ public class SignalServiceMessageSender {
     return container.build().toByteArray();
   }
 
-  private byte[] createCallContent(SignalServiceCallMessage callMessage) {
-    Content.Builder     container = Content.newBuilder();
-    CallMessage.Builder builder   = CallMessage.newBuilder();
-
-    if (callMessage.getOfferMessage().isPresent()) {
-      OfferMessage offer = callMessage.getOfferMessage().get();
-      builder.setOffer(CallMessage.Offer.newBuilder()
-                                        .setId(offer.getId())
-                                        .setDescription(offer.getDescription()));
-    } else if (callMessage.getAnswerMessage().isPresent()) {
-      AnswerMessage answer = callMessage.getAnswerMessage().get();
-      builder.setAnswer(CallMessage.Answer.newBuilder()
-                                          .setId(answer.getId())
-                                          .setDescription(answer.getDescription()));
-    } else if (callMessage.getIceUpdateMessages().isPresent()) {
-      List<IceUpdateMessage> updates = callMessage.getIceUpdateMessages().get();
-
-      for (IceUpdateMessage update : updates) {
-        builder.addIceUpdate(CallMessage.IceUpdate.newBuilder()
-                                                  .setId(update.getId())
-                                                  .setSdp(update.getSdp())
-                                                  .setSdpMid(update.getSdpMid())
-                                                  .setSdpMLineIndex(update.getSdpMLineIndex()));
-      }
-    } else if (callMessage.getHangupMessage().isPresent()) {
-      builder.setHangup(CallMessage.Hangup.newBuilder().setId(callMessage.getHangupMessage().get().getId()));
-    } else if (callMessage.getBusyMessage().isPresent()) {
-      builder.setBusy(CallMessage.Busy.newBuilder().setId(callMessage.getBusyMessage().get().getId()));
-    }
-
-    container.setCallMessage(builder);
-    return container.build().toByteArray();
-  }
-
   private byte[] createMultiDeviceContactsContent(SignalServiceAttachmentStream contacts, boolean complete)
       throws IOException
   {
@@ -987,6 +877,7 @@ public class SignalServiceMessageSender {
       throws IOException
   {
     List<SendMessageResult>                results                    = new LinkedList<>();
+    SignalServiceAddress                   ownAddress                 = localAddress;
     Iterator<SignalServiceAddress>         recipientIterator          = recipients.iterator();
     Iterator<Optional<UnidentifiedAccess>> unidentifiedAccessIterator = unidentifiedAccess.iterator();
 
@@ -995,7 +886,7 @@ public class SignalServiceMessageSender {
 
       try {
         boolean useFallbackEncryption = SessionManagementProtocol.shared.shouldMessageUseFallbackEncryption(content, recipient.getNumber(), store);
-        SendMessageResult result = sendMessage(messageID, recipient, unidentifiedAccessIterator.next(), timestamp, content, online, ttl, false, useFallbackEncryption, isClosedGroup, false, notifyPNServer);
+        SendMessageResult result = sendMessage(messageID, recipient, unidentifiedAccessIterator.next(), timestamp, content, online, ttl, false, useFallbackEncryption, isClosedGroup, notifyPNServer, Optional.absent());
         results.add(result);
       } catch (UnregisteredUserException e) {
         Log.w(TAG, e);
@@ -1015,12 +906,11 @@ public class SignalServiceMessageSender {
                                         byte[] content,
                                         boolean online,
                                         int ttl,
-                                        boolean                      useFallbackEncryption,
+                                        boolean useFallbackEncryption)
-                                        boolean                      isSyncMessage)
       throws IOException
   {
     // Loki - This method is only invoked for various types of control messages
-    return sendMessage(0, recipient, unidentifiedAccess, timestamp, content, online, ttl, false, false, useFallbackEncryption, isSyncMessage, false);
+    return sendMessage(0, recipient, unidentifiedAccess, timestamp, content, online, ttl, false, false, useFallbackEncryption, false,Optional.absent());
   }
 
   public SendMessageResult sendMessage(final long messageID,
@@ -1033,17 +923,23 @@ public class SignalServiceMessageSender {
                                        boolean isDeviceLinkMessage,
                                        boolean useFallbackEncryption,
                                        boolean isClosedGroup,
-                                       boolean                      isSyncMessage,
+                                       boolean notifyPNServer,
-                                       boolean                      notifyPNServer)
+                                       Optional<String> syncTarget)
       throws IOException
   {
-    long threadID = threadDatabase.getThreadID(recipient.getNumber());
+    boolean isSelfSend = syncTarget.isPresent() && !syncTarget.get().isEmpty();
+    long threadID;
+    if (isSelfSend) {
+      threadID = threadDatabase.getThreadID(syncTarget.get());
+    } else {
+      threadID = threadDatabase.getThreadID(recipient.getNumber());
+    }
     PublicChat publicChat = threadDatabase.getPublicChat(threadID);
     try {
       if (publicChat != null) {
         return sendMessageToPublicChat(messageID, recipient, timestamp, content, publicChat);
       } else {
-        return sendMessageToPrivateChat(messageID, recipient, unidentifiedAccess, timestamp, content, online, ttl, useFallbackEncryption, isClosedGroup, notifyPNServer);
+        return sendMessageToPrivateChat(messageID, recipient, unidentifiedAccess, timestamp, content, online, ttl, useFallbackEncryption, isClosedGroup, notifyPNServer, syncTarget);
       }
     } catch (PushNetworkException e) {
       return SendMessageResult.networkFailure(recipient);
@@ -1152,10 +1048,11 @@ public class SignalServiceMessageSender {
                                                      int                          ttl,
                                                      boolean                      useFallbackEncryption,
                                                      boolean                      isClosedGroup,
-                                                     final boolean                notifyPNServer)
+                                                     final boolean                notifyPNServer,
+                                                     Optional<String>             syncTarget)
       throws IOException, UntrustedIdentityException
   {
-    if (recipient.getNumber().equals(userPublicKey)) { return SendMessageResult.success(recipient, false, false); }
+    if (recipient.getNumber().equals(userPublicKey) && !syncTarget.isPresent()) { return SendMessageResult.success(recipient, false, false); }
     final SettableFuture<?>[] future = { new SettableFuture<Unit>() };
     OutgoingPushMessageList messages = getSessionProtocolEncryptedMessage(recipient, timestamp, content);
     // Loki - Remove this when we have shared sender keys
@@ -1221,14 +1118,10 @@ public class SignalServiceMessageSender {
         }
         return Unit.INSTANCE;
       }
-    }).fail(new Function1<Exception, Unit>() {
+    }).fail(exception -> {
-
-      @Override
-      public Unit invoke(Exception exception) {
       @SuppressWarnings("unchecked") SettableFuture<Unit> f = (SettableFuture<Unit>)future[0];
       f.setException(exception);
       return Unit.INSTANCE;
-      }
     });
 
     @SuppressWarnings("unchecked") SettableFuture<Unit> f = (SettableFuture<Unit>)future[0];
@@ -1304,12 +1197,6 @@ public class SignalServiceMessageSender {
     return builder.build();
   }
 
-  private AttachmentPointer createAttachmentPointer(SignalServiceAttachmentStream attachment)
-      throws IOException
-  {
-    return createAttachmentPointer(attachment, false, null);
-  }
-
   private AttachmentPointer createAttachmentPointer(SignalServiceAttachmentStream attachment, SignalServiceAddress recipient)
       throws IOException
   {

libsignal/src/main/java/org/session/libsignal/service/api/crypto/SignalServiceCipher.java

@@ -389,6 +389,7 @@ public class SignalServiceCipher {
     ClosedGroupUpdate              closedGroupUpdate           = content.getClosedGroupUpdate();
     ClosedGroupUpdateV2            closedGroupUpdateV2         = content.getClosedGroupUpdateV2();
     boolean                        isDeviceUnlinkingRequest    = ((content.getFlags() & DataMessage.Flags.DEVICE_UNLINKING_REQUEST_VALUE) != 0);
+    String                         syncTarget                  = content.getSyncTarget();
 
     for (AttachmentPointer pointer : content.getAttachmentsList()) {
       attachments.add(createAttachmentPointer(pointer));
@@ -417,7 +418,8 @@ public class SignalServiceCipher {
             null,
             closedGroupUpdate,
             closedGroupUpdateV2,
-            isDeviceUnlinkingRequest);
+            isDeviceUnlinkingRequest,
+            syncTarget);
   }
 
   private SignalServiceSyncMessage createSynchronizeMessage(Metadata metadata, SyncMessage content)

libsignal/src/main/java/org/session/libsignal/service/api/messages/SignalServiceDataMessage.java

@@ -41,6 +41,7 @@ public class SignalServiceDataMessage {
   private final Optional<ClosedGroupUpdate>             closedGroupUpdate;
   private final Optional<ClosedGroupUpdateV2>           closedGroupUpdateV2;
   private final boolean                                 isDeviceUnlinkingRequest;
+  private final Optional<String>                        syncTarget;
 
   /**
    * Construct a SignalServiceDataMessage with a body and no attachments.
@@ -134,7 +135,7 @@ public class SignalServiceDataMessage {
                                   Quote quote, List<SharedContact> sharedContacts, List<Preview> previews,
                                   Sticker sticker)
   {
-    this(timestamp, group, attachments, body, endSession, expiresInSeconds, expirationUpdate, profileKey, profileKeyUpdate, quote, sharedContacts, previews, sticker, null, null, null, null, false);
+    this(timestamp, group, attachments, body, endSession, expiresInSeconds, expirationUpdate, profileKey, profileKeyUpdate, quote, sharedContacts, previews, sticker, null, null, null, null, false, null);
   }
 
   /**
@@ -155,7 +156,7 @@ public class SignalServiceDataMessage {
                                   Quote quote, List<SharedContact> sharedContacts, List<Preview> previews,
                                   Sticker sticker, PreKeyBundle preKeyBundle, DeviceLink deviceLink,
                                   ClosedGroupUpdate closedGroupUpdate, ClosedGroupUpdateV2 closedGroupUpdateV2,
-                                  boolean isDeviceUnlinkingRequest)
+                                  boolean isDeviceUnlinkingRequest, String syncTarget)
   {
     this.timestamp                   = timestamp;
     this.body                        = Optional.fromNullable(body);
@@ -172,6 +173,7 @@ public class SignalServiceDataMessage {
     this.closedGroupUpdate           = Optional.fromNullable(closedGroupUpdate);
     this.closedGroupUpdateV2         = Optional.fromNullable(closedGroupUpdateV2);
     this.isDeviceUnlinkingRequest    = isDeviceUnlinkingRequest;
+    this.syncTarget                  = Optional.fromNullable(syncTarget);
 
     if (attachments != null && !attachments.isEmpty()) {
       this.attachments = Optional.of(attachments);
@@ -250,6 +252,10 @@ public class SignalServiceDataMessage {
     return profileKey;
   }
 
+  public Optional<String> getSyncTarget() {
+    return syncTarget;
+  }
+
   public Optional<Quote> getQuote() {
     return quote;
   }
@@ -307,6 +313,7 @@ public class SignalServiceDataMessage {
     private Sticker              sticker;
     private PreKeyBundle         preKeyBundle;
     private DeviceLink           deviceLink;
+    private String               syncTarget;
     private boolean              isDeviceUnlinkingRequest;
 
     private Builder() {}
@@ -336,6 +343,11 @@ public class SignalServiceDataMessage {
       return this;
     }
 
+    public Builder withSyncTarget(String syncTarget) {
+      this.syncTarget = syncTarget;
+      return this;
+    }
+
     public Builder asEndSessionMessage() {
       return asEndSessionMessage(true);
     }
@@ -417,7 +429,7 @@ public class SignalServiceDataMessage {
                                           profileKeyUpdate, quote, sharedContacts, previews,
                                           sticker, preKeyBundle, deviceLink,
                         null, null,
-                                          isDeviceUnlinkingRequest);
+                                          isDeviceUnlinkingRequest, syncTarget);
     }
   }