Multi-device sending text messages.

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

@@ -40,24 +40,48 @@ public class PushTextSendJob extends PushSendJob implements InjectableType {
 
   private static final String TAG = PushTextSendJob.class.getSimpleName();
 
+  private static final String KEY_TEMPLATE_MESSAGE_ID = "template_message_id";
   private static final String KEY_MESSAGE_ID = "message_id";
+  private static final String KEY_DESTINATION = "destination";
+  private static final String KEY_IS_FRIEND_REQUEST = "is_friend_request";
+  private static final String KEY_CUSTOM_FR_MESSAGE = "custom_friend_request_message";
 
   @Inject SignalServiceMessageSender messageSender;
 
-  private long messageId;
+  private long messageId; // The message id
+  private long templateMessageId; // The message id of the message to template this send job from
 
-  public PushTextSendJob(long messageId, Address destination) {
-    this(constructParameters(destination), messageId);
+  // Loki - Multi-device
+
+  private Address destination = null; // Destination to check whether this is another device we're sending to
+  private boolean isFriendRequest = false; // Whether this is a friend request message
+  private String customFriendRequestMessage = null; // If this isn't set then we use the message body
+
+  public PushTextSendJob(long messageId, Address destination) { this(messageId, messageId, destination); }
+  public PushTextSendJob(long templateMessageId, long messageId, Address destination) { this(templateMessageId, messageId, destination, false, null); }
+  public PushTextSendJob(long templateMessageId, long messageId, Address destination, boolean isFriendRequest, String customFriendRequestMessage) {
+    this(constructParameters(destination), templateMessageId, messageId, destination, isFriendRequest, customFriendRequestMessage);
   }
 
-  private PushTextSendJob(@NonNull Job.Parameters parameters, long messageId) {
+  private PushTextSendJob(@NonNull Job.Parameters parameters, long templateMessageId, long messageId, Address destination, boolean isFriendRequest, String customFriendRequestMessage) {
     super(parameters);
+    this.templateMessageId = templateMessageId;
     this.messageId = messageId;
+    this.destination = destination;
+    this.isFriendRequest = isFriendRequest;
+    this.customFriendRequestMessage = customFriendRequestMessage;
   }
 
   @Override
   public @NonNull Data serialize() {
-    return new Data.Builder().putLong(KEY_MESSAGE_ID, messageId).build();
+    Data.Builder builder = new Data.Builder()
+            .putLong(KEY_TEMPLATE_MESSAGE_ID, templateMessageId)
+            .putLong(KEY_MESSAGE_ID, messageId)
+            .putString(KEY_DESTINATION, destination.serialize())
+            .putBoolean(KEY_IS_FRIEND_REQUEST, isFriendRequest);
+
+    if (customFriendRequestMessage != null) { builder.putString(KEY_CUSTOM_FR_MESSAGE, customFriendRequestMessage); }
+    return builder.build();
   }
 
   @Override
@@ -67,31 +91,38 @@ public class PushTextSendJob extends PushSendJob implements InjectableType {
 
   @Override
   public void onAdded() {
-    DatabaseFactory.getSmsDatabase(context).markAsSending(messageId);
+    if (messageId >= 0) {
+      DatabaseFactory.getSmsDatabase(context).markAsSending(messageId);
+    }
   }
 
   @Override
   public void onPushSend() throws NoSuchMessageException, RetryLaterException {
     ExpiringMessageManager expirationManager = ApplicationContext.getInstance(context).getExpiringMessageManager();
     SmsDatabase            database          = DatabaseFactory.getSmsDatabase(context);
-    SmsMessageRecord       record            = database.getMessage(messageId);
+    SmsMessageRecord       record            = database.getMessage(templateMessageId);
+
+    Recipient recordRecipient  = record.getRecipient().resolve();
+    boolean hasSameDestination = destination.equals(recordRecipient.getAddress());
 
-    if (!record.isPending() && !record.isFailed()) {
-      warn(TAG, "Message " + messageId + " was already sent. Ignoring.");
+    if (hasSameDestination && !record.isPending() && !record.isFailed()) {
+      warn(TAG, "Message " + templateMessageId + " was already sent. Ignoring.");
       return;
     }
 
     try {
-      log(TAG, "Sending message: " + messageId);
+      log(TAG, "Sending message: " + templateMessageId + (hasSameDestination ? "" : "to another device."));
 
-      Recipient              recipient  = record.getRecipient().resolve();
+      Recipient              recipient = Recipient.from(context, destination, false);
       byte[]                 profileKey = recipient.getProfileKey();
       UnidentifiedAccessMode accessMode = recipient.getUnidentifiedAccessMode();
 
-      boolean unidentified = deliver(record);
+      boolean unidentified = deliver(messageId, recipient, record);
 
-      database.markAsSent(messageId, true);
-      database.markUnidentified(messageId, unidentified);
+      if (messageId >= 0) {
+        database.markAsSent(messageId, true);
+        database.markUnidentified(messageId, unidentified);
+      }
 
       if (recipient.isLocalNumber()) {
         SyncMessageId id = new SyncMessageId(recipient.getAddress(), record.getDateSent());
@@ -112,12 +143,12 @@ public class PushTextSendJob extends PushSendJob implements InjectableType {
         }
       }
 
-      if (record.getExpiresIn() > 0) {
+      if (record.getExpiresIn() > 0 && messageId >= 0) {
         database.markExpireStarted(messageId);
         expirationManager.scheduleDeletion(record.getId(), record.isMms(), record.getExpiresIn());
       }
 
-      log(TAG, "Sent message: " + messageId);
+      log(TAG, "Sent message: " + templateMessageId + (hasSameDestination ? "" : "to another device."));
 
     } catch (InsecureFallbackApprovalException e) {
       warn(TAG, "Failure", e);
@@ -142,43 +173,45 @@ public class PushTextSendJob extends PushSendJob implements InjectableType {
 
   @Override
   public void onCanceled() {
-    DatabaseFactory.getSmsDatabase(context).markAsSentFailed(messageId);
+    if (messageId >= 0) {
+      DatabaseFactory.getSmsDatabase(context).markAsSentFailed(messageId);
 
-    long      threadId  = DatabaseFactory.getSmsDatabase(context).getThreadIdForMessage(messageId);
-    Recipient recipient = DatabaseFactory.getThreadDatabase(context).getRecipientForThreadId(threadId);
+      long threadId = DatabaseFactory.getSmsDatabase(context).getThreadIdForMessage(messageId);
+      Recipient recipient = DatabaseFactory.getThreadDatabase(context).getRecipientForThreadId(threadId);
 
-    if (threadId != -1 && recipient != null) {
-      MessageNotifier.notifyMessageDeliveryFailed(context, recipient, threadId);
+      if (threadId != -1 && recipient != null) {
+        MessageNotifier.notifyMessageDeliveryFailed(context, recipient, threadId);
+      }
     }
   }
 
-  private boolean deliver(SmsMessageRecord message)
+  private boolean deliver(long messageId, Recipient recipient, SmsMessageRecord message)
       throws UntrustedIdentityException, InsecureFallbackApprovalException, RetryLaterException
   {
     try {
       // rotateSenderCertificateIfNecessary();
-
-      SignalServiceAddress             address            = getPushAddress(message.getIndividualRecipient().getAddress());
-      Optional<byte[]>                 profileKey         = getProfileKey(message.getIndividualRecipient());
-      Optional<UnidentifiedAccessPair> unidentifiedAccess = UnidentifiedAccessUtil.getAccessFor(context, message.getIndividualRecipient());
+      SignalServiceAddress             address            = getPushAddress(recipient.getAddress());
+      Optional<byte[]>                 profileKey         = getProfileKey(recipient);
+      Optional<UnidentifiedAccessPair> unidentifiedAccess = UnidentifiedAccessUtil.getAccessFor(context, recipient);
 
       log(TAG, "Have access key to use: " + unidentifiedAccess.isPresent());
 
       // Loki - Include a pre key bundle if the message is a friend request or an end session message
       PreKeyBundle preKeyBundle;
-      if (message.isFriendRequest() || message.isEndSession()) {
+      if (isFriendRequest|| message.isEndSession()) {
         preKeyBundle = DatabaseFactory.getLokiPreKeyBundleDatabase(context).generatePreKeyBundle(address.getNumber());
       } else {
         preKeyBundle = null;
       }
 
+      String body = (isFriendRequest && customFriendRequestMessage != null) ? customFriendRequestMessage : message.getBody();
       SignalServiceDataMessage textSecureMessage = SignalServiceDataMessage.newBuilder()
                                                                            .withTimestamp(message.getDateSent())
-                                                                           .withBody(message.getBody())
+                                                                           .withBody(body)
                                                                            .withExpiration((int)(message.getExpiresIn() / 1000))
                                                                            .withProfileKey(profileKey.orNull())
                                                                            .asEndSessionMessage(message.isEndSession())
-                                                                           .asFriendRequest(message.isFriendRequest())
+                                                                           .asFriendRequest(isFriendRequest)
                                                                            .withPreKeyBundle(preKeyBundle)
                                                                            .build();
 
@@ -203,7 +236,12 @@ public class PushTextSendJob extends PushSendJob implements InjectableType {
   public static class Factory implements Job.Factory<PushTextSendJob> {
     @Override
     public @NonNull PushTextSendJob create(@NonNull Parameters parameters, @NonNull Data data) {
-      return new PushTextSendJob(parameters, data.getLong(KEY_MESSAGE_ID));
+      long templateMessageID = data.getLong(KEY_TEMPLATE_MESSAGE_ID);
+      long messageID = data.getLong(KEY_MESSAGE_ID);
+      Address destination = Address.fromSerialized(data.getString(KEY_DESTINATION));
+      boolean isFriendRequest = data.getBoolean(KEY_IS_FRIEND_REQUEST);
+      String frMessage = data.hasString(KEY_CUSTOM_FR_MESSAGE) ? data.getString(KEY_CUSTOM_FR_MESSAGE) : null;
+      return new PushTextSendJob(parameters, templateMessageID, messageID, destination, isFriendRequest, frMessage);
     }
   }
 }

src/org/thoughtcrime/securesms/loki/Utilities.kt

@@ -17,10 +17,28 @@ import org.whispersystems.signalservice.api.messages.SignalServiceContent
 import org.whispersystems.signalservice.api.messages.SignalServiceDataMessage
 import org.whispersystems.signalservice.api.messages.SignalServiceEnvelope
 import org.whispersystems.signalservice.api.push.SignalServiceAddress
+import org.whispersystems.signalservice.loki.api.LokiGroupChatAPI
 import org.whispersystems.signalservice.loki.api.LokiPairingAuthorisation
 import org.whispersystems.signalservice.loki.api.LokiStorageAPI
 import org.whispersystems.signalservice.loki.messaging.LokiThreadFriendRequestStatus
 
+fun isGroupChat(pubKey: String): Boolean {
+  return (LokiGroupChatAPI.publicChatServer == pubKey)
+}
+
+fun getFriends(context: Context, devices: Set<String>): Set<String> {
+  val lokiThreadDatabase = DatabaseFactory.getLokiThreadDatabase(context)
+
+  return devices.mapNotNull { device ->
+    val address = Address.fromSerialized(device)
+    val recipient = Recipient.from(context, address, false)
+    val threadID = DatabaseFactory.getThreadDatabase(context).getThreadIdIfExistsFor(recipient)
+    if (threadID < 0) { return@mapNotNull null }
+
+    if (lokiThreadDatabase.getFriendRequestStatus(threadID) == LokiThreadFriendRequestStatus.FRIENDS) device else null
+  }.toSet()
+}
+
 fun shouldAutomaticallyBecomeFriendsWithDevice(pubKey: String, context: Context): Promise<Boolean, Unit> {
   val lokiThreadDatabase = DatabaseFactory.getLokiThreadDatabase(context)
   val storageAPI = LokiStorageAPI.shared ?: return Promise.ofSuccess(false)

src/org/thoughtcrime/securesms/sms/MessageSender.java

@@ -42,6 +42,7 @@ import org.thoughtcrime.securesms.jobs.SmsSendJob;
 import org.thoughtcrime.securesms.linkpreview.LinkPreviewRepository;
 import org.thoughtcrime.securesms.linkpreview.LinkPreviewUtil;
 import org.thoughtcrime.securesms.logging.Log;
+import org.thoughtcrime.securesms.loki.UtilitiesKt;
 import org.thoughtcrime.securesms.mms.MmsException;
 import org.thoughtcrime.securesms.mms.OutgoingMediaMessage;
 import org.thoughtcrime.securesms.push.AccountManagerFactory;
@@ -52,9 +53,15 @@ import org.thoughtcrime.securesms.util.Util;
 import org.whispersystems.libsignal.util.guava.Optional;
 import org.whispersystems.signalservice.api.SignalServiceAccountManager;
 import org.whispersystems.signalservice.api.push.ContactTokenDetails;
+import org.whispersystems.signalservice.loki.api.LokiStorageAPI;
 import org.whispersystems.signalservice.loki.messaging.LokiMessageFriendRequestStatus;
 
 import java.io.IOException;
+import java.util.ArrayList;
+import java.util.HashSet;
+import java.util.Set;
+
+import kotlin.Unit;
 
 public class MessageSender {
 
@@ -203,8 +210,47 @@ public class MessageSender {
   }
 
   private static void sendTextPush(Context context, Recipient recipient, long messageId) {
+    LokiStorageAPI storageAPI = LokiStorageAPI.Companion.getShared();
     JobManager jobManager = ApplicationContext.getInstance(context).getJobManager();
-    jobManager.add(new PushTextSendJob(messageId, recipient.getAddress()));
+
+    // Just send the message normally if the job manager failed or if it's a group message
+    String recipientPubKey = recipient.getAddress().serialize();
+    if (storageAPI == null || UtilitiesKt.isGroupChat(recipientPubKey)) {
+      jobManager.add(new PushTextSendJob(messageId, recipient.getAddress()));
+      return;
+    }
+
+    String ourPubKey = TextSecurePreferences.getLocalNumber(context);
+
+    // Get all the devices and run our logic on them
+    storageAPI.getAllDevices(recipientPubKey).success(devices -> {
+      // Remove our self if we intended this message to go to another recipient
+      if (!recipientPubKey.equals(ourPubKey)) { devices.remove(ourPubKey); }
+
+      Set<String> friends = UtilitiesKt.getFriends(context, devices);
+      Set<String> nonFriends = new HashSet<>(devices);
+      nonFriends.removeAll(friends);
+
+      // Send a normal message to our friends
+      for (String friend : friends) {
+        // If this message had the same recipient then point it to the correct message id otherwise point it to a non-existing message
+        long messageIdToUse = recipientPubKey.equals(friend) ? messageId : -1L;
+        jobManager.add(new PushTextSendJob(messageId, messageIdToUse, Address.fromSerialized(friend)));
+      }
+
+      // Send friend requests to non friends
+      for (String stranger : nonFriends) {
+        // If this message had the same recipient then point it to the correct message id otherwise point it to a non-existing message
+        long messageIdToUse = recipientPubKey.equals(stranger) ? messageId : -1L;
+
+        // If we're friends with one of the devices then send out a default friend request message
+        boolean isFriendsWithAny = friends.size() > 0;
+        String defaultFriendRequestMessage = isFriendsWithAny ? "This is a friend request for devices linked to " + recipientPubKey : null;
+        jobManager.add(new PushTextSendJob(messageId, messageIdToUse, Address.fromSerialized(stranger), true, defaultFriendRequestMessage));
+      }
+
+      return Unit.INSTANCE;
+    });
   }
 
   private static void sendMediaPush(Context context, Recipient recipient, long messageId) {