nmode's Git Repositories - signal-cli/blob - lib/src/main/java/org/asamk/signal/manager/helper/IncomingMessageHandler.java

   1 package org.asamk.signal.manager.helper;
   2
   3 import org.asamk.signal.manager.Manager;
   4 import org.asamk.signal.manager.SignalDependencies;
   5 import org.asamk.signal.manager.TrustLevel;
   6 import org.asamk.signal.manager.UntrustedIdentityException;
   7 import org.asamk.signal.manager.actions.HandleAction;
   8 import org.asamk.signal.manager.actions.RefreshPreKeysAction;
   9 import org.asamk.signal.manager.actions.RenewSessionAction;
  10 import org.asamk.signal.manager.actions.ResendMessageAction;
  11 import org.asamk.signal.manager.actions.RetrieveProfileAction;
  12 import org.asamk.signal.manager.actions.RetrieveStorageDataAction;
  13 import org.asamk.signal.manager.actions.SendGroupInfoAction;
  14 import org.asamk.signal.manager.actions.SendGroupInfoRequestAction;
  15 import org.asamk.signal.manager.actions.SendReceiptAction;
  16 import org.asamk.signal.manager.actions.SendRetryMessageRequestAction;
  17 import org.asamk.signal.manager.actions.SendSyncBlockedListAction;
  18 import org.asamk.signal.manager.actions.SendSyncConfigurationAction;
  19 import org.asamk.signal.manager.actions.SendSyncContactsAction;
  20 import org.asamk.signal.manager.actions.SendSyncGroupsAction;
  21 import org.asamk.signal.manager.actions.SendSyncKeysAction;
  22 import org.asamk.signal.manager.api.MessageEnvelope;
  23 import org.asamk.signal.manager.api.Pair;
  24 import org.asamk.signal.manager.api.StickerPackId;
  25 import org.asamk.signal.manager.groups.GroupId;
  26 import org.asamk.signal.manager.groups.GroupNotFoundException;
  27 import org.asamk.signal.manager.groups.GroupUtils;
  28 import org.asamk.signal.manager.jobs.RetrieveStickerPackJob;
  29 import org.asamk.signal.manager.storage.SignalAccount;
  30 import org.asamk.signal.manager.storage.groups.GroupInfoV1;
  31 import org.asamk.signal.manager.storage.recipients.Profile;
  32 import org.asamk.signal.manager.storage.recipients.RecipientId;
  33 import org.asamk.signal.manager.storage.stickers.Sticker;
  34 import org.signal.libsignal.metadata.ProtocolInvalidKeyException;
  35 import org.signal.libsignal.metadata.ProtocolInvalidKeyIdException;
  36 import org.signal.libsignal.metadata.ProtocolInvalidMessageException;
  37 import org.signal.libsignal.metadata.ProtocolNoSessionException;
  38 import org.signal.libsignal.metadata.ProtocolUntrustedIdentityException;
  39 import org.signal.libsignal.metadata.SelfSendException;
  40 import org.signal.zkgroup.InvalidInputException;
  41 import org.signal.zkgroup.profiles.ProfileKey;
  42 import org.slf4j.Logger;
  43 import org.slf4j.LoggerFactory;
  44 import org.whispersystems.libsignal.SignalProtocolAddress;
  45 import org.whispersystems.libsignal.protocol.DecryptionErrorMessage;
  46 import org.whispersystems.signalservice.api.messages.SignalServiceContent;
  47 import org.whispersystems.signalservice.api.messages.SignalServiceDataMessage;
  48 import org.whispersystems.signalservice.api.messages.SignalServiceEnvelope;
  49 import org.whispersystems.signalservice.api.messages.SignalServiceGroup;
  50 import org.whispersystems.signalservice.api.messages.multidevice.SignalServiceSyncMessage;
  51 import org.whispersystems.signalservice.api.messages.multidevice.StickerPackOperationMessage;
  52 import org.whispersystems.signalservice.api.push.SignalServiceAddress;
  53
  54 import java.util.ArrayList;
  55 import java.util.List;
  56 import java.util.stream.Collectors;
  57
  58 public final class IncomingMessageHandler {
  59
  60     private final static Logger logger = LoggerFactory.getLogger(IncomingMessageHandler.class);
  61
  62     private final SignalAccount account;
  63     private final SignalDependencies dependencies;
  64     private final Context context;
  65
  66     public IncomingMessageHandler(final Context context) {
  67         this.account = context.getAccount();
  68         this.dependencies = context.getDependencies();
  69         this.context = context;
  70     }
  71
  72     public Pair<List<HandleAction>, Exception> handleRetryEnvelope(
  73             final SignalServiceEnvelope envelope,
  74             final boolean ignoreAttachments,
  75             final Manager.ReceiveMessageHandler handler
  76     ) {
  77         final List<HandleAction> actions = new ArrayList<>();
  78         if (envelope.isPreKeySignalMessage()) {
  79             actions.add(RefreshPreKeysAction.create());
  80         }
  81
  82         SignalServiceContent content = null;
  83         if (!envelope.isReceipt()) {
  84             account.getIdentityKeyStore().setRetryingDecryption(true);
  85             try {
  86                 content = dependencies.getCipher().decrypt(envelope);
  87             } catch (ProtocolUntrustedIdentityException e) {
  88                 final var recipientId = account.getRecipientStore().resolveRecipient(e.getSender());
  89                 final var exception = new UntrustedIdentityException(account.getRecipientStore()
  90                         .resolveRecipientAddress(recipientId), e.getSenderDevice());
  91                 return new Pair<>(List.of(), exception);
  92             } catch (Exception e) {
  93                 return new Pair<>(List.of(), e);
  94             } finally {
  95                 account.getIdentityKeyStore().setRetryingDecryption(false);
  96             }
  97         }
  98         actions.addAll(checkAndHandleMessage(envelope, content, ignoreAttachments, handler, null));
  99         return new Pair<>(actions, null);
 100     }
 101
 102     public Pair<List<HandleAction>, Exception> handleEnvelope(
 103             final SignalServiceEnvelope envelope,
 104             final boolean ignoreAttachments,
 105             final Manager.ReceiveMessageHandler handler
 106     ) {
 107         final var actions = new ArrayList<HandleAction>();
 108         if (envelope.hasSourceUuid()) {
 109             // Store uuid if we don't have it already
 110             // address/uuid in envelope is sent by server
 111             account.getRecipientStore().resolveRecipientTrusted(envelope.getSourceAddress());
 112         }
 113         SignalServiceContent content = null;
 114         Exception exception = null;
 115         if (!envelope.isReceipt()) {
 116             try {
 117                 content = dependencies.getCipher().decrypt(envelope);
 118             } catch (ProtocolUntrustedIdentityException e) {
 119                 final var recipientId = account.getRecipientStore().resolveRecipient(e.getSender());
 120                 actions.add(new RetrieveProfileAction(recipientId));
 121                 exception = new UntrustedIdentityException(account.getRecipientStore()
 122                         .resolveRecipientAddress(recipientId), e.getSenderDevice());
 123             } catch (ProtocolInvalidKeyIdException | ProtocolInvalidKeyException | ProtocolNoSessionException | ProtocolInvalidMessageException e) {
 124                 logger.debug("Failed to decrypt incoming message", e);
 125                 final var sender = account.getRecipientStore().resolveRecipient(e.getSender());
 126                 if (context.getContactHelper().isContactBlocked(sender)) {
 127                     logger.debug("Received invalid message from blocked contact, ignoring.");
 128                 } else {
 129                     final var senderProfile = context.getProfileHelper().getRecipientProfile(sender);
 130                     final var selfProfile = context.getProfileHelper()
 131                             .getRecipientProfile(account.getSelfRecipientId());
 132                     if ((!sender.equals(account.getSelfRecipientId()) || e.getSenderDevice() != account.getDeviceId())
 133                             && senderProfile != null
 134                             && senderProfile.getCapabilities().contains(Profile.Capability.senderKey)
 135                             && selfProfile != null
 136                             && selfProfile.getCapabilities().contains(Profile.Capability.senderKey)) {
 137                         logger.debug("Received invalid message, requesting message resend.");
 138                         actions.add(new SendRetryMessageRequestAction(sender, e, envelope));
 139                     } else {
 140                         logger.debug("Received invalid message, queuing renew session action.");
 141                         actions.add(new RenewSessionAction(sender));
 142                     }
 143                 }
 144                 exception = e;
 145             } catch (SelfSendException e) {
 146                 logger.debug("Dropping unidentified message from self.");
 147                 return new Pair<>(List.of(), null);
 148             } catch (Exception e) {
 149                 logger.debug("Failed to handle incoming message", e);
 150                 exception = e;
 151             }
 152         }
 153
 154         actions.addAll(checkAndHandleMessage(envelope, content, ignoreAttachments, handler, exception));
 155         return new Pair<>(actions, exception);
 156     }
 157
 158     private List<HandleAction> checkAndHandleMessage(
 159             final SignalServiceEnvelope envelope,
 160             final SignalServiceContent content,
 161             final boolean ignoreAttachments,
 162             final Manager.ReceiveMessageHandler handler,
 163             final Exception exception
 164     ) {
 165         if (!envelope.hasSourceUuid() && content != null) {
 166             // Store uuid if we don't have it already
 167             // address/uuid is validated by unidentified sender certificate
 168             account.getRecipientStore().resolveRecipientTrusted(content.getSender());
 169         }
 170         if (envelope.isReceipt()) {
 171             final var senderPair = getSender(envelope, content);
 172             final var sender = senderPair.first();
 173             final var senderDeviceId = senderPair.second();
 174             account.getMessageSendLogStore().deleteEntryForRecipient(envelope.getTimestamp(), sender, senderDeviceId);
 175         }
 176
 177         if (isMessageBlocked(envelope, content)) {
 178             logger.info("Ignoring a message from blocked user/group: {}", envelope.getTimestamp());
 179             return List.of();
 180         } else if (isNotAllowedToSendToGroup(envelope, content)) {
 181             logger.info("Ignoring a group message from an unauthorized sender (no member or admin): {} {}",
 182                     (envelope.hasSourceUuid() ? envelope.getSourceAddress() : content.getSender()).getIdentifier(),
 183                     envelope.getTimestamp());
 184             return List.of();
 185         } else {
 186             List<HandleAction> actions;
 187             if (content != null) {
 188                 actions = handleMessage(envelope, content, ignoreAttachments);
 189             } else {
 190                 actions = List.of();
 191             }
 192             handler.handleMessage(MessageEnvelope.from(envelope,
 193                     content,
 194                     account.getRecipientStore(),
 195                     account.getRecipientStore()::resolveRecipientAddress,
 196                     context.getAttachmentHelper()::getAttachmentFile,
 197                     exception), exception);
 198             return actions;
 199         }
 200     }
 201
 202     public List<HandleAction> handleMessage(
 203             SignalServiceEnvelope envelope, SignalServiceContent content, boolean ignoreAttachments
 204     ) {
 205         var actions = new ArrayList<HandleAction>();
 206         final var senderPair = getSender(envelope, content);
 207         final var sender = senderPair.first();
 208         final var senderDeviceId = senderPair.second();
 209
 210         if (content.getReceiptMessage().isPresent()) {
 211             final var message = content.getReceiptMessage().get();
 212             if (message.isDeliveryReceipt()) {
 213                 account.getMessageSendLogStore()
 214                         .deleteEntriesForRecipient(message.getTimestamps(), sender, senderDeviceId);
 215             }
 216         }
 217
 218         if (content.getSenderKeyDistributionMessage().isPresent()) {
 219             final var message = content.getSenderKeyDistributionMessage().get();
 220             final var protocolAddress = new SignalProtocolAddress(context.getRecipientHelper()
 221                     .resolveSignalServiceAddress(sender)
 222                     .getIdentifier(), senderDeviceId);
 223             logger.debug("Received a sender key distribution message for distributionId {} from {}",
 224                     message.getDistributionId(),
 225                     protocolAddress);
 226             dependencies.getMessageSender().processSenderKeyDistributionMessage(protocolAddress, message);
 227         }
 228
 229         if (content.getDecryptionErrorMessage().isPresent()) {
 230             var message = content.getDecryptionErrorMessage().get();
 231             logger.debug("Received a decryption error message (resend request for {})", message.getTimestamp());
 232             if (message.getDeviceId() == account.getDeviceId()) {
 233                 handleDecryptionErrorMessage(actions, sender, senderDeviceId, message);
 234             } else {
 235                 logger.debug("Request is for another one of our devices");
 236             }
 237         }
 238
 239         if (content.getDataMessage().isPresent()) {
 240             var message = content.getDataMessage().get();
 241
 242             if (content.isNeedsReceipt()) {
 243                 actions.add(new SendReceiptAction(sender, message.getTimestamp()));
 244             }
 245
 246             actions.addAll(handleSignalServiceDataMessage(message,
 247                     false,
 248                     sender,
 249                     account.getSelfRecipientId(),
 250                     ignoreAttachments));
 251         }
 252
 253         if (content.getSyncMessage().isPresent()) {
 254             var syncMessage = content.getSyncMessage().get();
 255             actions.addAll(handleSyncMessage(syncMessage, sender, ignoreAttachments));
 256         }
 257
 258         return actions;
 259     }
 260
 261     private void handleDecryptionErrorMessage(
 262             final List<HandleAction> actions,
 263             final RecipientId sender,
 264             final int senderDeviceId,
 265             final DecryptionErrorMessage message
 266     ) {
 267         final var logEntries = account.getMessageSendLogStore()
 268                 .findMessages(sender, senderDeviceId, message.getTimestamp(), !message.getRatchetKey().isPresent());
 269
 270         for (final var logEntry : logEntries) {
 271             actions.add(new ResendMessageAction(sender, message.getTimestamp(), logEntry));
 272         }
 273
 274         if (message.getRatchetKey().isPresent()) {
 275             if (account.getSessionStore().isCurrentRatchetKey(sender, senderDeviceId, message.getRatchetKey().get())) {
 276                 if (logEntries.isEmpty()) {
 277                     logger.debug("Renewing the session with sender");
 278                     actions.add(new RenewSessionAction(sender));
 279                 } else {
 280                     logger.trace("Archiving the session with sender, a resend message has already been queued");
 281                     context.getAccount().getSessionStore().archiveSessions(sender);
 282                 }
 283             }
 284             return;
 285         }
 286
 287         var found = false;
 288         for (final var logEntry : logEntries) {
 289             if (logEntry.groupId().isEmpty()) {
 290                 continue;
 291             }
 292             final var group = account.getGroupStore().getGroup(logEntry.groupId().get());
 293             if (group == null) {
 294                 continue;
 295             }
 296             found = true;
 297             logger.trace("Deleting shared sender key with {} ({}): {}",
 298                     sender,
 299                     senderDeviceId,
 300                     group.getDistributionId());
 301             account.getSenderKeyStore().deleteSharedWith(sender, senderDeviceId, group.getDistributionId());
 302         }
 303         if (!found) {
 304             logger.debug("Reset all shared sender keys with this recipient, no related message found in send log");
 305             account.getSenderKeyStore().deleteSharedWith(sender);
 306         }
 307     }
 308
 309     private List<HandleAction> handleSyncMessage(
 310             final SignalServiceSyncMessage syncMessage, final RecipientId sender, final boolean ignoreAttachments
 311     ) {
 312         var actions = new ArrayList<HandleAction>();
 313         account.setMultiDevice(true);
 314         if (syncMessage.getSent().isPresent()) {
 315             var message = syncMessage.getSent().get();
 316             final var destination = message.getDestination().orNull();
 317             actions.addAll(handleSignalServiceDataMessage(message.getMessage(),
 318                     true,
 319                     sender,
 320                     destination == null ? null : context.getRecipientHelper().resolveRecipient(destination),
 321                     ignoreAttachments));
 322         }
 323         if (syncMessage.getRequest().isPresent() && account.isMasterDevice()) {
 324             var rm = syncMessage.getRequest().get();
 325             if (rm.isContactsRequest()) {
 326                 actions.add(SendSyncContactsAction.create());
 327             }
 328             if (rm.isGroupsRequest()) {
 329                 actions.add(SendSyncGroupsAction.create());
 330             }
 331             if (rm.isBlockedListRequest()) {
 332                 actions.add(SendSyncBlockedListAction.create());
 333             }
 334             if (rm.isKeysRequest()) {
 335                 actions.add(SendSyncKeysAction.create());
 336             }
 337             if (rm.isConfigurationRequest()) {
 338                 actions.add(SendSyncConfigurationAction.create());
 339             }
 340         }
 341         if (syncMessage.getGroups().isPresent()) {
 342             logger.warn("Received a group v1 sync message, that can't be handled anymore, ignoring.");
 343         }
 344         if (syncMessage.getBlockedList().isPresent()) {
 345             final var blockedListMessage = syncMessage.getBlockedList().get();
 346             for (var address : blockedListMessage.getAddresses()) {
 347                 context.getContactHelper()
 348                         .setContactBlocked(context.getRecipientHelper().resolveRecipient(address), true);
 349             }
 350             for (var groupId : blockedListMessage.getGroupIds()
 351                     .stream()
 352                     .map(GroupId::unknownVersion)
 353                     .collect(Collectors.toSet())) {
 354                 try {
 355                     context.getGroupHelper().setGroupBlocked(groupId, true);
 356                 } catch (GroupNotFoundException e) {
 357                     logger.warn("BlockedListMessage contained groupID that was not found in GroupStore: {}",
 358                             groupId.toBase64());
 359                 }
 360             }
 361         }
 362         if (syncMessage.getContacts().isPresent()) {
 363             try {
 364                 final var contactsMessage = syncMessage.getContacts().get();
 365                 context.getAttachmentHelper()
 366                         .retrieveAttachment(contactsMessage.getContactsStream(),
 367                                 context.getSyncHelper()::handleSyncDeviceContacts);
 368             } catch (Exception e) {
 369                 logger.warn("Failed to handle received sync contacts, ignoring: {}", e.getMessage());
 370             }
 371         }
 372         if (syncMessage.getVerified().isPresent()) {
 373             final var verifiedMessage = syncMessage.getVerified().get();
 374             account.getIdentityKeyStore()
 375                     .setIdentityTrustLevel(account.getRecipientStore()
 376                                     .resolveRecipientTrusted(verifiedMessage.getDestination()),
 377                             verifiedMessage.getIdentityKey(),
 378                             TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
 379         }
 380         if (syncMessage.getStickerPackOperations().isPresent()) {
 381             final var stickerPackOperationMessages = syncMessage.getStickerPackOperations().get();
 382             for (var m : stickerPackOperationMessages) {
 383                 if (!m.getPackId().isPresent()) {
 384                     continue;
 385                 }
 386                 final var stickerPackId = StickerPackId.deserialize(m.getPackId().get());
 387                 final var installed = !m.getType().isPresent()
 388                         || m.getType().get() == StickerPackOperationMessage.Type.INSTALL;
 389
 390                 var sticker = account.getStickerStore().getStickerPack(stickerPackId);
 391                 if (m.getPackKey().isPresent()) {
 392                     if (sticker == null) {
 393                         sticker = new Sticker(stickerPackId, m.getPackKey().get());
 394                     }
 395                     if (installed) {
 396                         context.getJobExecutor()
 397                                 .enqueueJob(new RetrieveStickerPackJob(stickerPackId, m.getPackKey().get()));
 398                     }
 399                 }
 400
 401                 if (sticker != null) {
 402                     sticker.setInstalled(installed);
 403                     account.getStickerStore().updateSticker(sticker);
 404                 }
 405             }
 406         }
 407         if (syncMessage.getFetchType().isPresent()) {
 408             switch (syncMessage.getFetchType().get()) {
 409                 case LOCAL_PROFILE:
 410                     actions.add(new RetrieveProfileAction(account.getSelfRecipientId()));
 411                 case STORAGE_MANIFEST:
 412                     actions.add(RetrieveStorageDataAction.create());
 413             }
 414         }
 415         if (syncMessage.getKeys().isPresent()) {
 416             final var keysMessage = syncMessage.getKeys().get();
 417             if (keysMessage.getStorageService().isPresent()) {
 418                 final var storageKey = keysMessage.getStorageService().get();
 419                 account.setStorageKey(storageKey);
 420                 actions.add(RetrieveStorageDataAction.create());
 421             }
 422         }
 423         if (syncMessage.getConfiguration().isPresent()) {
 424             final var configurationMessage = syncMessage.getConfiguration().get();
 425             final var configurationStore = account.getConfigurationStore();
 426             if (configurationMessage.getReadReceipts().isPresent()) {
 427                 configurationStore.setReadReceipts(configurationMessage.getReadReceipts().get());
 428             }
 429             if (configurationMessage.getLinkPreviews().isPresent()) {
 430                 configurationStore.setLinkPreviews(configurationMessage.getLinkPreviews().get());
 431             }
 432             if (configurationMessage.getTypingIndicators().isPresent()) {
 433                 configurationStore.setTypingIndicators(configurationMessage.getTypingIndicators().get());
 434             }
 435             if (configurationMessage.getUnidentifiedDeliveryIndicators().isPresent()) {
 436                 configurationStore.setUnidentifiedDeliveryIndicators(configurationMessage.getUnidentifiedDeliveryIndicators()
 437                         .get());
 438             }
 439         }
 440         return actions;
 441     }
 442
 443     private boolean isMessageBlocked(SignalServiceEnvelope envelope, SignalServiceContent content) {
 444         SignalServiceAddress source;
 445         if (!envelope.isUnidentifiedSender() && envelope.hasSourceUuid()) {
 446             source = envelope.getSourceAddress();
 447         } else if (content != null) {
 448             source = content.getSender();
 449         } else {
 450             return false;
 451         }
 452         final var recipientId = context.getRecipientHelper().resolveRecipient(source);
 453         if (context.getContactHelper().isContactBlocked(recipientId)) {
 454             return true;
 455         }
 456
 457         if (content != null && content.getDataMessage().isPresent()) {
 458             var message = content.getDataMessage().get();
 459             if (message.getGroupContext().isPresent()) {
 460                 var groupId = GroupUtils.getGroupId(message.getGroupContext().get());
 461                 return context.getGroupHelper().isGroupBlocked(groupId);
 462             }
 463         }
 464
 465         return false;
 466     }
 467
 468     private boolean isNotAllowedToSendToGroup(SignalServiceEnvelope envelope, SignalServiceContent content) {
 469         SignalServiceAddress source;
 470         if (!envelope.isUnidentifiedSender() && envelope.hasSourceUuid()) {
 471             source = envelope.getSourceAddress();
 472         } else if (content != null) {
 473             source = content.getSender();
 474         } else {
 475             return false;
 476         }
 477
 478         if (content == null || !content.getDataMessage().isPresent()) {
 479             return false;
 480         }
 481
 482         var message = content.getDataMessage().get();
 483         if (!message.getGroupContext().isPresent()) {
 484             return false;
 485         }
 486
 487         if (message.getGroupContext().get().getGroupV1().isPresent()) {
 488             var groupInfo = message.getGroupContext().get().getGroupV1().get();
 489             if (groupInfo.getType() == SignalServiceGroup.Type.QUIT) {
 490                 return false;
 491             }
 492         }
 493
 494         var groupId = GroupUtils.getGroupId(message.getGroupContext().get());
 495         var group = context.getGroupHelper().getGroup(groupId);
 496         if (group == null) {
 497             return false;
 498         }
 499
 500         final var recipientId = context.getRecipientHelper().resolveRecipient(source);
 501         if (!group.isMember(recipientId) && !(group.isPendingMember(recipientId) && message.isGroupV2Update())) {
 502             return true;
 503         }
 504
 505         if (group.isAnnouncementGroup() && !group.isAdmin(recipientId)) {
 506             return message.getBody().isPresent()
 507                     || message.getAttachments().isPresent()
 508                     || message.getQuote()
 509                     .isPresent()
 510                     || message.getPreviews().isPresent()
 511                     || message.getMentions().isPresent()
 512                     || message.getSticker().isPresent();
 513         }
 514         return false;
 515     }
 516
 517     private List<HandleAction> handleSignalServiceDataMessage(
 518             SignalServiceDataMessage message,
 519             boolean isSync,
 520             RecipientId source,
 521             RecipientId destination,
 522             boolean ignoreAttachments
 523     ) {
 524         var actions = new ArrayList<HandleAction>();
 525         if (message.getGroupContext().isPresent()) {
 526             if (message.getGroupContext().get().getGroupV1().isPresent()) {
 527                 var groupInfo = message.getGroupContext().get().getGroupV1().get();
 528                 var groupId = GroupId.v1(groupInfo.getGroupId());
 529                 var group = context.getGroupHelper().getGroup(groupId);
 530                 if (group == null || group instanceof GroupInfoV1) {
 531                     var groupV1 = (GroupInfoV1) group;
 532                     switch (groupInfo.getType()) {
 533                         case UPDATE: {
 534                             if (groupV1 == null) {
 535                                 groupV1 = new GroupInfoV1(groupId);
 536                             }
 537
 538                             if (groupInfo.getAvatar().isPresent()) {
 539                                 var avatar = groupInfo.getAvatar().get();
 540                                 context.getGroupHelper().downloadGroupAvatar(groupV1.getGroupId(), avatar);
 541                             }
 542
 543                             if (groupInfo.getName().isPresent()) {
 544                                 groupV1.name = groupInfo.getName().get();
 545                             }
 546
 547                             if (groupInfo.getMembers().isPresent()) {
 548                                 groupV1.addMembers(groupInfo.getMembers()
 549                                         .get()
 550                                         .stream()
 551                                         .map(context.getRecipientHelper()::resolveRecipient)
 552                                         .collect(Collectors.toSet()));
 553                             }
 554
 555                             account.getGroupStore().updateGroup(groupV1);
 556                             break;
 557                         }
 558                         case DELIVER:
 559                             if (groupV1 == null && !isSync) {
 560                                 actions.add(new SendGroupInfoRequestAction(source, groupId));
 561                             }
 562                             break;
 563                         case QUIT: {
 564                             if (groupV1 != null) {
 565                                 groupV1.removeMember(source);
 566                                 account.getGroupStore().updateGroup(groupV1);
 567                             }
 568                             break;
 569                         }
 570                         case REQUEST_INFO:
 571                             if (groupV1 != null && !isSync) {
 572                                 actions.add(new SendGroupInfoAction(source, groupV1.getGroupId()));
 573                             }
 574                             break;
 575                     }
 576                 } else {
 577                     // Received a group v1 message for a v2 group
 578                 }
 579             }
 580             if (message.getGroupContext().get().getGroupV2().isPresent()) {
 581                 final var groupContext = message.getGroupContext().get().getGroupV2().get();
 582                 final var groupMasterKey = groupContext.getMasterKey();
 583
 584                 context.getGroupHelper()
 585                         .getOrMigrateGroup(groupMasterKey,
 586                                 groupContext.getRevision(),
 587                                 groupContext.hasSignedGroupChange() ? groupContext.getSignedGroupChange() : null);
 588             }
 589         }
 590
 591         final var conversationPartnerAddress = isSync ? destination : source;
 592         if (conversationPartnerAddress != null && message.isEndSession()) {
 593             account.getSessionStore().deleteAllSessions(conversationPartnerAddress);
 594         }
 595         if (message.isExpirationUpdate() || message.getBody().isPresent()) {
 596             if (message.getGroupContext().isPresent()) {
 597                 if (message.getGroupContext().get().getGroupV1().isPresent()) {
 598                     var groupInfo = message.getGroupContext().get().getGroupV1().get();
 599                     var group = account.getGroupStore().getOrCreateGroupV1(GroupId.v1(groupInfo.getGroupId()));
 600                     if (group != null) {
 601                         if (group.messageExpirationTime != message.getExpiresInSeconds()) {
 602                             group.messageExpirationTime = message.getExpiresInSeconds();
 603                             account.getGroupStore().updateGroup(group);
 604                         }
 605                     }
 606                 } else if (message.getGroupContext().get().getGroupV2().isPresent()) {
 607                     // disappearing message timer already stored in the DecryptedGroup
 608                 }
 609             } else if (conversationPartnerAddress != null) {
 610                 context.getContactHelper()
 611                         .setExpirationTimer(conversationPartnerAddress, message.getExpiresInSeconds());
 612             }
 613         }
 614         if (!ignoreAttachments) {
 615             if (message.getAttachments().isPresent()) {
 616                 for (var attachment : message.getAttachments().get()) {
 617                     context.getAttachmentHelper().downloadAttachment(attachment);
 618                 }
 619             }
 620             if (message.getSharedContacts().isPresent()) {
 621                 for (var contact : message.getSharedContacts().get()) {
 622                     if (contact.getAvatar().isPresent()) {
 623                         context.getAttachmentHelper().downloadAttachment(contact.getAvatar().get().getAttachment());
 624                     }
 625                 }
 626             }
 627             if (message.getPreviews().isPresent()) {
 628                 final var previews = message.getPreviews().get();
 629                 for (var preview : previews) {
 630                     if (preview.getImage().isPresent()) {
 631                         context.getAttachmentHelper().downloadAttachment(preview.getImage().get());
 632                     }
 633                 }
 634             }
 635             if (message.getQuote().isPresent()) {
 636                 final var quote = message.getQuote().get();
 637
 638                 for (var quotedAttachment : quote.getAttachments()) {
 639                     final var thumbnail = quotedAttachment.getThumbnail();
 640                     if (thumbnail != null) {
 641                         context.getAttachmentHelper().downloadAttachment(thumbnail);
 642                     }
 643                 }
 644             }
 645         }
 646         if (message.getProfileKey().isPresent() && message.getProfileKey().get().length == 32) {
 647             final ProfileKey profileKey;
 648             try {
 649                 profileKey = new ProfileKey(message.getProfileKey().get());
 650             } catch (InvalidInputException e) {
 651                 throw new AssertionError(e);
 652             }
 653             if (account.getSelfRecipientId().equals(source)) {
 654                 this.account.setProfileKey(profileKey);
 655             }
 656             this.account.getProfileStore().storeProfileKey(source, profileKey);
 657         }
 658         if (message.getSticker().isPresent()) {
 659             final var messageSticker = message.getSticker().get();
 660             final var stickerPackId = StickerPackId.deserialize(messageSticker.getPackId());
 661             var sticker = account.getStickerStore().getStickerPack(stickerPackId);
 662             if (sticker == null) {
 663                 sticker = new Sticker(stickerPackId, messageSticker.getPackKey());
 664                 account.getStickerStore().updateSticker(sticker);
 665             }
 666             context.getJobExecutor().enqueueJob(new RetrieveStickerPackJob(stickerPackId, messageSticker.getPackKey()));
 667         }
 668         return actions;
 669     }
 670
 671     private Pair<RecipientId, Integer> getSender(SignalServiceEnvelope envelope, SignalServiceContent content) {
 672         if (!envelope.isUnidentifiedSender() && envelope.hasSourceUuid()) {
 673             return new Pair<>(context.getRecipientHelper().resolveRecipient(envelope.getSourceAddress()),
 674                     envelope.getSourceDevice());
 675         } else {
 676             return new Pair<>(context.getRecipientHelper().resolveRecipient(content.getSender()),
 677                     content.getSenderDevice());
 678         }
 679     }
 680 }