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.actions.HandleAction;
   6 import org.asamk.signal.manager.actions.RefreshPreKeysAction;
   7 import org.asamk.signal.manager.actions.RenewSessionAction;
   8 import org.asamk.signal.manager.actions.ResendMessageAction;
   9 import org.asamk.signal.manager.actions.RetrieveProfileAction;
  10 import org.asamk.signal.manager.actions.RetrieveStorageDataAction;
  11 import org.asamk.signal.manager.actions.SendGroupInfoAction;
  12 import org.asamk.signal.manager.actions.SendGroupInfoRequestAction;
  13 import org.asamk.signal.manager.actions.SendPniIdentityKeyAction;
  14 import org.asamk.signal.manager.actions.SendProfileKeyAction;
  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.actions.UpdateAccountAttributesAction;
  23 import org.asamk.signal.manager.api.MessageEnvelope;
  24 import org.asamk.signal.manager.api.Pair;
  25 import org.asamk.signal.manager.api.ReceiveConfig;
  26 import org.asamk.signal.manager.api.StickerPackId;
  27 import org.asamk.signal.manager.api.TrustLevel;
  28 import org.asamk.signal.manager.api.UntrustedIdentityException;
  29 import org.asamk.signal.manager.groups.GroupId;
  30 import org.asamk.signal.manager.groups.GroupNotFoundException;
  31 import org.asamk.signal.manager.groups.GroupUtils;
  32 import org.asamk.signal.manager.jobs.RetrieveStickerPackJob;
  33 import org.asamk.signal.manager.storage.SignalAccount;
  34 import org.asamk.signal.manager.storage.groups.GroupInfoV1;
  35 import org.asamk.signal.manager.storage.recipients.Profile;
  36 import org.asamk.signal.manager.storage.recipients.RecipientId;
  37 import org.asamk.signal.manager.storage.stickers.StickerPack;
  38 import org.asamk.signal.manager.util.KeyUtils;
  39 import org.signal.libsignal.metadata.ProtocolInvalidKeyException;
  40 import org.signal.libsignal.metadata.ProtocolInvalidKeyIdException;
  41 import org.signal.libsignal.metadata.ProtocolInvalidMessageException;
  42 import org.signal.libsignal.metadata.ProtocolNoSessionException;
  43 import org.signal.libsignal.metadata.ProtocolUntrustedIdentityException;
  44 import org.signal.libsignal.metadata.SelfSendException;
  45 import org.signal.libsignal.protocol.InvalidMessageException;
  46 import org.signal.libsignal.protocol.message.DecryptionErrorMessage;
  47 import org.signal.libsignal.zkgroup.InvalidInputException;
  48 import org.signal.libsignal.zkgroup.profiles.ProfileKey;
  49 import org.slf4j.Logger;
  50 import org.slf4j.LoggerFactory;
  51 import org.whispersystems.signalservice.api.messages.SignalServiceContent;
  52 import org.whispersystems.signalservice.api.messages.SignalServiceDataMessage;
  53 import org.whispersystems.signalservice.api.messages.SignalServiceEnvelope;
  54 import org.whispersystems.signalservice.api.messages.SignalServiceGroup;
  55 import org.whispersystems.signalservice.api.messages.SignalServiceGroupContext;
  56 import org.whispersystems.signalservice.api.messages.SignalServiceGroupV2;
  57 import org.whispersystems.signalservice.api.messages.SignalServiceReceiptMessage;
  58 import org.whispersystems.signalservice.api.messages.SignalServiceStoryMessage;
  59 import org.whispersystems.signalservice.api.messages.multidevice.SignalServiceSyncMessage;
  60 import org.whispersystems.signalservice.api.messages.multidevice.StickerPackOperationMessage;
  61 import org.whispersystems.signalservice.api.push.ServiceId;
  62 import org.whispersystems.signalservice.api.push.SignalServiceAddress;
  63
  64 import java.util.ArrayList;
  65 import java.util.List;
  66 import java.util.stream.Collectors;
  67
  68 public final class IncomingMessageHandler {
  69
  70     private final static Logger logger = LoggerFactory.getLogger(IncomingMessageHandler.class);
  71
  72     private final SignalAccount account;
  73     private final SignalDependencies dependencies;
  74     private final Context context;
  75
  76     public IncomingMessageHandler(final Context context) {
  77         this.account = context.getAccount();
  78         this.dependencies = context.getDependencies();
  79         this.context = context;
  80     }
  81
  82     public Pair<List<HandleAction>, Exception> handleRetryEnvelope(
  83             final SignalServiceEnvelope envelope,
  84             final ReceiveConfig receiveConfig,
  85             final Manager.ReceiveMessageHandler handler
  86     ) {
  87         final List<HandleAction> actions = new ArrayList<>();
  88         if (envelope.isPreKeySignalMessage()) {
  89             actions.add(RefreshPreKeysAction.create());
  90         }
  91
  92         SignalServiceContent content = null;
  93         if (!envelope.isReceipt()) {
  94             account.getIdentityKeyStore().setRetryingDecryption(true);
  95             try {
  96                 content = dependencies.getCipher().decrypt(envelope);
  97             } catch (ProtocolUntrustedIdentityException e) {
  98                 final var recipientId = account.getRecipientResolver().resolveRecipient(e.getSender());
  99                 final var exception = new UntrustedIdentityException(account.getRecipientAddressResolver()
 100                         .resolveRecipientAddress(recipientId), e.getSenderDevice());
 101                 return new Pair<>(List.of(), exception);
 102             } catch (Exception e) {
 103                 return new Pair<>(List.of(), e);
 104             } finally {
 105                 account.getIdentityKeyStore().setRetryingDecryption(false);
 106             }
 107         }
 108         actions.addAll(checkAndHandleMessage(envelope, content, receiveConfig, handler, null));
 109         return new Pair<>(actions, null);
 110     }
 111
 112     public Pair<List<HandleAction>, Exception> handleEnvelope(
 113             final SignalServiceEnvelope envelope,
 114             final ReceiveConfig receiveConfig,
 115             final Manager.ReceiveMessageHandler handler
 116     ) {
 117         final var actions = new ArrayList<HandleAction>();
 118         if (envelope.hasSourceUuid()) {
 119             // Store uuid if we don't have it already
 120             // address/uuid in envelope is sent by server
 121             account.getRecipientTrustedResolver().resolveRecipientTrusted(envelope.getSourceAddress());
 122         }
 123         SignalServiceContent content = null;
 124         Exception exception = null;
 125         if (!envelope.isReceipt()) {
 126             try {
 127                 content = dependencies.getCipher().decrypt(envelope);
 128             } catch (ProtocolUntrustedIdentityException e) {
 129                 final var recipientId = account.getRecipientResolver().resolveRecipient(e.getSender());
 130                 actions.add(new RetrieveProfileAction(recipientId));
 131                 exception = new UntrustedIdentityException(account.getRecipientAddressResolver()
 132                         .resolveRecipientAddress(recipientId), e.getSenderDevice());
 133             } catch (ProtocolInvalidKeyIdException | ProtocolInvalidKeyException | ProtocolNoSessionException |
 134                      ProtocolInvalidMessageException e) {
 135                 logger.debug("Failed to decrypt incoming message", e);
 136                 final var sender = account.getRecipientResolver().resolveRecipient(e.getSender());
 137                 if (context.getContactHelper().isContactBlocked(sender)) {
 138                     logger.debug("Received invalid message from blocked contact, ignoring.");
 139                 } else {
 140                     final var senderProfile = context.getProfileHelper().getRecipientProfile(sender);
 141                     final var selfProfile = context.getProfileHelper().getSelfProfile();
 142                     final var serviceId = ServiceId.parseOrThrow(e.getSender());
 143                     if ((!sender.equals(account.getSelfRecipientId()) || e.getSenderDevice() != account.getDeviceId())
 144                             && senderProfile != null
 145                             && senderProfile.getCapabilities().contains(Profile.Capability.senderKey)
 146                             && selfProfile != null
 147                             && selfProfile.getCapabilities().contains(Profile.Capability.senderKey)) {
 148                         logger.debug("Received invalid message, requesting message resend.");
 149                         actions.add(new SendRetryMessageRequestAction(sender, serviceId, e, envelope));
 150                     } else {
 151                         logger.debug("Received invalid message, queuing renew session action.");
 152                         actions.add(new RenewSessionAction(sender, serviceId));
 153                     }
 154                 }
 155                 exception = e;
 156             } catch (SelfSendException e) {
 157                 logger.debug("Dropping unidentified message from self.");
 158                 return new Pair<>(List.of(), null);
 159             } catch (Exception e) {
 160                 logger.debug("Failed to handle incoming message", e);
 161                 exception = e;
 162             }
 163         }
 164
 165         actions.addAll(checkAndHandleMessage(envelope, content, receiveConfig, handler, exception));
 166         return new Pair<>(actions, exception);
 167     }
 168
 169     private List<HandleAction> checkAndHandleMessage(
 170             final SignalServiceEnvelope envelope,
 171             final SignalServiceContent content,
 172             final ReceiveConfig receiveConfig,
 173             final Manager.ReceiveMessageHandler handler,
 174             final Exception exception
 175     ) {
 176         if (content != null) {
 177             // Store uuid if we don't have it already
 178             // address/uuid is validated by unidentified sender certificate
 179             account.getRecipientTrustedResolver().resolveRecipientTrusted(content.getSender());
 180         }
 181         if (envelope.isReceipt()) {
 182             final var senderDeviceAddress = getSender(envelope, content);
 183             final var sender = senderDeviceAddress.serviceId();
 184             final var senderDeviceId = senderDeviceAddress.deviceId();
 185             account.getMessageSendLogStore().deleteEntryForRecipient(envelope.getTimestamp(), sender, senderDeviceId);
 186         }
 187
 188         if (isMessageBlocked(envelope, content)) {
 189             logger.info("Ignoring a message from blocked user/group: {}", envelope.getTimestamp());
 190             return List.of();
 191         } else if (isNotAllowedToSendToGroup(envelope, content)) {
 192             logger.info("Ignoring a group message from an unauthorized sender (no member or admin): {} {}",
 193                     (envelope.hasSourceUuid() ? envelope.getSourceAddress() : content.getSender()).getIdentifier(),
 194                     envelope.getTimestamp());
 195             return List.of();
 196         } else {
 197             List<HandleAction> actions;
 198             if (content != null) {
 199                 actions = handleMessage(envelope, content, receiveConfig);
 200             } else {
 201                 actions = List.of();
 202             }
 203             handler.handleMessage(MessageEnvelope.from(envelope,
 204                     content,
 205                     account.getRecipientResolver(),
 206                     account.getRecipientAddressResolver(),
 207                     context.getAttachmentHelper()::getAttachmentFile,
 208                     exception), exception);
 209             return actions;
 210         }
 211     }
 212
 213     public List<HandleAction> handleMessage(
 214             SignalServiceEnvelope envelope, SignalServiceContent content, ReceiveConfig receiveConfig
 215     ) {
 216         var actions = new ArrayList<HandleAction>();
 217         final var senderDeviceAddress = getSender(envelope, content);
 218         final var sender = senderDeviceAddress.recipientId();
 219         final var senderServiceId = senderDeviceAddress.serviceId();
 220         final var senderDeviceId = senderDeviceAddress.deviceId();
 221         final var destination = getDestination(envelope);
 222
 223         if (content.getReceiptMessage().isPresent()) {
 224             final var message = content.getReceiptMessage().get();
 225             if (message.isDeliveryReceipt()) {
 226                 account.getMessageSendLogStore()
 227                         .deleteEntriesForRecipient(message.getTimestamps(), senderServiceId, senderDeviceId);
 228             }
 229         }
 230
 231         if (content.getSenderKeyDistributionMessage().isPresent()) {
 232             final var message = content.getSenderKeyDistributionMessage().get();
 233             final var protocolAddress = senderServiceId.toProtocolAddress(senderDeviceId);
 234             logger.debug("Received a sender key distribution message for distributionId {} from {}",
 235                     message.getDistributionId(),
 236                     protocolAddress);
 237             dependencies.getMessageSender().processSenderKeyDistributionMessage(protocolAddress, message);
 238         }
 239
 240         if (content.getDecryptionErrorMessage().isPresent()) {
 241             var message = content.getDecryptionErrorMessage().get();
 242             logger.debug("Received a decryption error message from {}.{} (resend request for {})",
 243                     sender,
 244                     senderDeviceId,
 245                     message.getTimestamp());
 246             if (message.getDeviceId() == account.getDeviceId()) {
 247                 handleDecryptionErrorMessage(actions, sender, senderServiceId, senderDeviceId, message);
 248             } else {
 249                 logger.debug("Request is for another one of our devices");
 250             }
 251         }
 252
 253         if (content.getDataMessage().isPresent()) {
 254             var message = content.getDataMessage().get();
 255
 256             if (content.isNeedsReceipt()) {
 257                 actions.add(new SendReceiptAction(sender,
 258                         SignalServiceReceiptMessage.Type.DELIVERY,
 259                         message.getTimestamp()));
 260             } else {
 261                 // Message wasn't sent as unidentified sender message
 262                 final var contact = context.getAccount().getContactStore().getContact(sender);
 263                 if (account.isPrimaryDevice()
 264                         && contact != null
 265                         && !contact.isBlocked()
 266                         && contact.isProfileSharingEnabled()) {
 267                     actions.add(UpdateAccountAttributesAction.create());
 268                     actions.add(new SendProfileKeyAction(sender));
 269                 }
 270             }
 271             if (receiveConfig.sendReadReceipts()) {
 272                 actions.add(new SendReceiptAction(sender,
 273                         SignalServiceReceiptMessage.Type.READ,
 274                         message.getTimestamp()));
 275             }
 276
 277             actions.addAll(handleSignalServiceDataMessage(message,
 278                     false,
 279                     senderDeviceAddress,
 280                     destination,
 281                     receiveConfig.ignoreAttachments()));
 282         }
 283
 284         if (content.getStoryMessage().isPresent()) {
 285             final var message = content.getStoryMessage().get();
 286             actions.addAll(handleSignalServiceStoryMessage(message, sender, receiveConfig.ignoreAttachments()));
 287         }
 288
 289         if (content.getSyncMessage().isPresent()) {
 290             var syncMessage = content.getSyncMessage().get();
 291             actions.addAll(handleSyncMessage(syncMessage, senderDeviceAddress, receiveConfig.ignoreAttachments()));
 292         }
 293
 294         return actions;
 295     }
 296
 297     private void handleDecryptionErrorMessage(
 298             final List<HandleAction> actions,
 299             final RecipientId sender,
 300             final ServiceId senderServiceId,
 301             final int senderDeviceId,
 302             final DecryptionErrorMessage message
 303     ) {
 304         final var logEntries = account.getMessageSendLogStore()
 305                 .findMessages(senderServiceId,
 306                         senderDeviceId,
 307                         message.getTimestamp(),
 308                         message.getRatchetKey().isEmpty());
 309
 310         for (final var logEntry : logEntries) {
 311             actions.add(new ResendMessageAction(sender, message.getTimestamp(), logEntry));
 312         }
 313
 314         if (message.getRatchetKey().isPresent()) {
 315             if (account.getAciSessionStore()
 316                     .isCurrentRatchetKey(senderServiceId, senderDeviceId, message.getRatchetKey().get())) {
 317                 if (logEntries.isEmpty()) {
 318                     logger.debug("Renewing the session with sender");
 319                     actions.add(new RenewSessionAction(sender, senderServiceId));
 320                 } else {
 321                     logger.trace("Archiving the session with sender, a resend message has already been queued");
 322                     context.getAccount().getAciSessionStore().archiveSessions(senderServiceId);
 323                 }
 324             }
 325             return;
 326         }
 327
 328         var found = false;
 329         for (final var logEntry : logEntries) {
 330             if (logEntry.groupId().isEmpty()) {
 331                 continue;
 332             }
 333             final var group = account.getGroupStore().getGroup(logEntry.groupId().get());
 334             if (group == null) {
 335                 continue;
 336             }
 337             found = true;
 338             logger.trace("Deleting shared sender key with {} ({}): {}",
 339                     sender,
 340                     senderDeviceId,
 341                     group.getDistributionId());
 342             account.getSenderKeyStore().deleteSharedWith(senderServiceId, senderDeviceId, group.getDistributionId());
 343         }
 344         if (!found) {
 345             logger.debug("Reset all shared sender keys with this recipient, no related message found in send log");
 346             account.getSenderKeyStore().deleteSharedWith(senderServiceId);
 347         }
 348     }
 349
 350     private List<HandleAction> handleSyncMessage(
 351             final SignalServiceSyncMessage syncMessage, final DeviceAddress sender, final boolean ignoreAttachments
 352     ) {
 353         var actions = new ArrayList<HandleAction>();
 354         account.setMultiDevice(true);
 355         if (syncMessage.getSent().isPresent()) {
 356             var message = syncMessage.getSent().get();
 357             final var destination = message.getDestination().orElse(null);
 358             if (message.getDataMessage().isPresent()) {
 359                 actions.addAll(handleSignalServiceDataMessage(message.getDataMessage().get(),
 360                         true,
 361                         sender,
 362                         destination == null
 363                                 ? null
 364                                 : new DeviceAddress(context.getRecipientHelper().resolveRecipient(destination),
 365                                         destination.getServiceId(),
 366                                         0),
 367                         ignoreAttachments));
 368             }
 369             if (message.getStoryMessage().isPresent()) {
 370                 actions.addAll(handleSignalServiceStoryMessage(message.getStoryMessage().get(),
 371                         sender.recipientId(),
 372                         ignoreAttachments));
 373             }
 374         }
 375         if (syncMessage.getRequest().isPresent() && account.isPrimaryDevice()) {
 376             var rm = syncMessage.getRequest().get();
 377             if (rm.isContactsRequest()) {
 378                 actions.add(SendSyncContactsAction.create());
 379             }
 380             if (rm.isGroupsRequest()) {
 381                 actions.add(SendSyncGroupsAction.create());
 382             }
 383             if (rm.isBlockedListRequest()) {
 384                 actions.add(SendSyncBlockedListAction.create());
 385             }
 386             if (rm.isKeysRequest()) {
 387                 actions.add(SendSyncKeysAction.create());
 388             }
 389             if (rm.isConfigurationRequest()) {
 390                 actions.add(SendSyncConfigurationAction.create());
 391             }
 392             if (rm.isPniIdentityRequest()) {
 393                 actions.add(SendPniIdentityKeyAction.create());
 394             }
 395         }
 396         if (syncMessage.getGroups().isPresent()) {
 397             try {
 398                 final var groupsMessage = syncMessage.getGroups().get();
 399                 context.getAttachmentHelper()
 400                         .retrieveAttachment(groupsMessage, context.getSyncHelper()::handleSyncDeviceGroups);
 401             } catch (Exception e) {
 402                 logger.warn("Failed to handle received sync groups, ignoring: {}", e.getMessage());
 403             }
 404         }
 405         if (syncMessage.getBlockedList().isPresent()) {
 406             final var blockedListMessage = syncMessage.getBlockedList().get();
 407             for (var address : blockedListMessage.getAddresses()) {
 408                 context.getContactHelper()
 409                         .setContactBlocked(context.getRecipientHelper().resolveRecipient(address), true);
 410             }
 411             for (var groupId : blockedListMessage.getGroupIds()
 412                     .stream()
 413                     .map(GroupId::unknownVersion)
 414                     .collect(Collectors.toSet())) {
 415                 try {
 416                     context.getGroupHelper().setGroupBlocked(groupId, true);
 417                 } catch (GroupNotFoundException e) {
 418                     logger.warn("BlockedListMessage contained groupID that was not found in GroupStore: {}",
 419                             groupId.toBase64());
 420                 }
 421             }
 422         }
 423         if (syncMessage.getContacts().isPresent()) {
 424             try {
 425                 final var contactsMessage = syncMessage.getContacts().get();
 426                 context.getAttachmentHelper()
 427                         .retrieveAttachment(contactsMessage.getContactsStream(),
 428                                 context.getSyncHelper()::handleSyncDeviceContacts);
 429             } catch (Exception e) {
 430                 logger.warn("Failed to handle received sync contacts, ignoring: {}", e.getMessage());
 431             }
 432         }
 433         if (syncMessage.getVerified().isPresent()) {
 434             final var verifiedMessage = syncMessage.getVerified().get();
 435             account.getIdentityKeyStore()
 436                     .setIdentityTrustLevel(verifiedMessage.getDestination().getServiceId(),
 437                             verifiedMessage.getIdentityKey(),
 438                             TrustLevel.fromVerifiedState(verifiedMessage.getVerified()));
 439         }
 440         if (syncMessage.getStickerPackOperations().isPresent()) {
 441             final var stickerPackOperationMessages = syncMessage.getStickerPackOperations().get();
 442             for (var m : stickerPackOperationMessages) {
 443                 if (m.getPackId().isEmpty()) {
 444                     continue;
 445                 }
 446                 final var stickerPackId = StickerPackId.deserialize(m.getPackId().get());
 447                 final var installed = m.getType().isEmpty()
 448                         || m.getType().get() == StickerPackOperationMessage.Type.INSTALL;
 449
 450                 var sticker = account.getStickerStore().getStickerPack(stickerPackId);
 451                 if (m.getPackKey().isPresent()) {
 452                     if (sticker == null) {
 453                         sticker = new StickerPack(-1, stickerPackId, m.getPackKey().get(), installed);
 454                         account.getStickerStore().addStickerPack(sticker);
 455                     }
 456                     if (installed) {
 457                         context.getJobExecutor()
 458                                 .enqueueJob(new RetrieveStickerPackJob(stickerPackId, m.getPackKey().get()));
 459                     }
 460                 }
 461
 462                 if (sticker != null && sticker.isInstalled() != installed) {
 463                     account.getStickerStore().updateStickerPackInstalled(sticker.packId(), installed);
 464                 }
 465             }
 466         }
 467         if (syncMessage.getFetchType().isPresent()) {
 468             switch (syncMessage.getFetchType().get()) {
 469                 case LOCAL_PROFILE:
 470                     actions.add(new RetrieveProfileAction(account.getSelfRecipientId()));
 471                 case STORAGE_MANIFEST:
 472                     actions.add(RetrieveStorageDataAction.create());
 473             }
 474         }
 475         if (syncMessage.getKeys().isPresent()) {
 476             final var keysMessage = syncMessage.getKeys().get();
 477             if (keysMessage.getStorageService().isPresent()) {
 478                 final var storageKey = keysMessage.getStorageService().get();
 479                 account.setStorageKey(storageKey);
 480                 actions.add(RetrieveStorageDataAction.create());
 481             }
 482         }
 483         if (syncMessage.getConfiguration().isPresent()) {
 484             final var configurationMessage = syncMessage.getConfiguration().get();
 485             final var configurationStore = account.getConfigurationStore();
 486             if (configurationMessage.getReadReceipts().isPresent()) {
 487                 configurationStore.setReadReceipts(configurationMessage.getReadReceipts().get());
 488             }
 489             if (configurationMessage.getLinkPreviews().isPresent()) {
 490                 configurationStore.setLinkPreviews(configurationMessage.getLinkPreviews().get());
 491             }
 492             if (configurationMessage.getTypingIndicators().isPresent()) {
 493                 configurationStore.setTypingIndicators(configurationMessage.getTypingIndicators().get());
 494             }
 495             if (configurationMessage.getUnidentifiedDeliveryIndicators().isPresent()) {
 496                 configurationStore.setUnidentifiedDeliveryIndicators(configurationMessage.getUnidentifiedDeliveryIndicators()
 497                         .get());
 498             }
 499         }
 500         if (syncMessage.getPniIdentity().isPresent()) {
 501             final var pniIdentity = syncMessage.getPniIdentity().get();
 502             account.setPniIdentityKeyPair(KeyUtils.getIdentityKeyPair(pniIdentity.getPublicKey().toByteArray(),
 503                     pniIdentity.getPrivateKey().toByteArray()));
 504             actions.add(RefreshPreKeysAction.create());
 505         }
 506         // TODO handle PniChangeNumber
 507         return actions;
 508     }
 509
 510     private SignalServiceGroupContext getGroupContext(SignalServiceContent content) {
 511         if (content == null) {
 512             return null;
 513         }
 514
 515         if (content.getDataMessage().isPresent()) {
 516             var message = content.getDataMessage().get();
 517             if (message.getGroupContext().isPresent()) {
 518                 return message.getGroupContext().get();
 519             }
 520         }
 521
 522         if (content.getStoryMessage().isPresent()) {
 523             var message = content.getStoryMessage().get();
 524             if (message.getGroupContext().isPresent()) {
 525                 try {
 526                     return SignalServiceGroupContext.create(null, message.getGroupContext().get());
 527                 } catch (InvalidMessageException e) {
 528                     throw new AssertionError(e);
 529                 }
 530             }
 531         }
 532
 533         return null;
 534     }
 535
 536     private boolean isMessageBlocked(SignalServiceEnvelope envelope, SignalServiceContent content) {
 537         SignalServiceAddress source;
 538         if (!envelope.isUnidentifiedSender() && envelope.hasSourceUuid()) {
 539             source = envelope.getSourceAddress();
 540         } else if (content != null) {
 541             source = content.getSender();
 542         } else {
 543             return false;
 544         }
 545         final var recipientId = context.getRecipientHelper().resolveRecipient(source);
 546         if (context.getContactHelper().isContactBlocked(recipientId)) {
 547             return true;
 548         }
 549
 550         final var groupContext = getGroupContext(content);
 551         if (groupContext != null) {
 552             var groupId = GroupUtils.getGroupId(groupContext);
 553             return context.getGroupHelper().isGroupBlocked(groupId);
 554         }
 555
 556         return false;
 557     }
 558
 559     private boolean isNotAllowedToSendToGroup(SignalServiceEnvelope envelope, SignalServiceContent content) {
 560         SignalServiceAddress source;
 561         if (!envelope.isUnidentifiedSender() && envelope.hasSourceUuid()) {
 562             source = envelope.getSourceAddress();
 563         } else if (content != null) {
 564             source = content.getSender();
 565         } else {
 566             return false;
 567         }
 568
 569         final var groupContext = getGroupContext(content);
 570         if (groupContext == null) {
 571             return false;
 572         }
 573
 574         if (groupContext.getGroupV1().isPresent()) {
 575             var groupInfo = groupContext.getGroupV1().get();
 576             if (groupInfo.getType() == SignalServiceGroup.Type.QUIT) {
 577                 return false;
 578             }
 579         }
 580
 581         var groupId = GroupUtils.getGroupId(groupContext);
 582         var group = context.getGroupHelper().getGroup(groupId);
 583         if (group == null) {
 584             return false;
 585         }
 586
 587         final var message = content.getDataMessage().orElse(null);
 588
 589         final var recipientId = context.getRecipientHelper().resolveRecipient(source);
 590         if (!group.isMember(recipientId) && !(
 591                 group.isPendingMember(recipientId) && message != null && message.isGroupV2Update()
 592         )) {
 593             return true;
 594         }
 595
 596         if (group.isAnnouncementGroup() && !group.isAdmin(recipientId)) {
 597             return message == null
 598                     || message.getBody().isPresent()
 599                     || message.getAttachments().isPresent()
 600                     || message.getQuote().isPresent()
 601                     || message.getPreviews().isPresent()
 602                     || message.getMentions().isPresent()
 603                     || message.getSticker().isPresent();
 604         }
 605         return false;
 606     }
 607
 608     private List<HandleAction> handleSignalServiceDataMessage(
 609             SignalServiceDataMessage message,
 610             boolean isSync,
 611             DeviceAddress source,
 612             DeviceAddress destination,
 613             boolean ignoreAttachments
 614     ) {
 615         var actions = new ArrayList<HandleAction>();
 616         if (message.getGroupContext().isPresent()) {
 617             final var groupContext = message.getGroupContext().get();
 618             if (groupContext.getGroupV1().isPresent()) {
 619                 var groupInfo = groupContext.getGroupV1().get();
 620                 var groupId = GroupId.v1(groupInfo.getGroupId());
 621                 var group = context.getGroupHelper().getGroup(groupId);
 622                 if (group == null || group instanceof GroupInfoV1) {
 623                     var groupV1 = (GroupInfoV1) group;
 624                     switch (groupInfo.getType()) {
 625                         case UPDATE: {
 626                             if (groupV1 == null) {
 627                                 groupV1 = new GroupInfoV1(groupId);
 628                             }
 629
 630                             if (groupInfo.getAvatar().isPresent()) {
 631                                 var avatar = groupInfo.getAvatar().get();
 632                                 context.getGroupHelper().downloadGroupAvatar(groupV1.getGroupId(), avatar);
 633                             }
 634
 635                             if (groupInfo.getName().isPresent()) {
 636                                 groupV1.name = groupInfo.getName().get();
 637                             }
 638
 639                             if (groupInfo.getMembers().isPresent()) {
 640                                 groupV1.addMembers(groupInfo.getMembers()
 641                                         .get()
 642                                         .stream()
 643                                         .map(context.getRecipientHelper()::resolveRecipient)
 644                                         .collect(Collectors.toSet()));
 645                             }
 646
 647                             account.getGroupStore().updateGroup(groupV1);
 648                             break;
 649                         }
 650                         case DELIVER:
 651                             if (groupV1 == null && !isSync) {
 652                                 actions.add(new SendGroupInfoRequestAction(source.recipientId(), groupId));
 653                             }
 654                             break;
 655                         case QUIT: {
 656                             if (groupV1 != null) {
 657                                 groupV1.removeMember(source.recipientId());
 658                                 account.getGroupStore().updateGroup(groupV1);
 659                             }
 660                             break;
 661                         }
 662                         case REQUEST_INFO:
 663                             if (groupV1 != null && !isSync) {
 664                                 actions.add(new SendGroupInfoAction(source.recipientId(), groupV1.getGroupId()));
 665                             }
 666                             break;
 667                     }
 668                 } else {
 669                     // Received a group v1 message for a v2 group
 670                 }
 671             }
 672             if (groupContext.getGroupV2().isPresent()) {
 673                 handleGroupV2Context(groupContext.getGroupV2().get());
 674             }
 675         }
 676
 677         final var conversationPartnerAddress = isSync ? destination : source;
 678         if (conversationPartnerAddress != null && message.isEndSession()) {
 679             account.getAciSessionStore().deleteAllSessions(conversationPartnerAddress.serviceId());
 680         }
 681         if (message.isExpirationUpdate() || message.getBody().isPresent()) {
 682             if (message.getGroupContext().isPresent()) {
 683                 final var groupContext = message.getGroupContext().get();
 684                 if (groupContext.getGroupV1().isPresent()) {
 685                     var groupInfo = groupContext.getGroupV1().get();
 686                     var group = account.getGroupStore().getOrCreateGroupV1(GroupId.v1(groupInfo.getGroupId()));
 687                     if (group != null) {
 688                         if (group.messageExpirationTime != message.getExpiresInSeconds()) {
 689                             group.messageExpirationTime = message.getExpiresInSeconds();
 690                             account.getGroupStore().updateGroup(group);
 691                         }
 692                     }
 693                 } else if (groupContext.getGroupV2().isPresent()) {
 694                     // disappearing message timer already stored in the DecryptedGroup
 695                 }
 696             } else if (conversationPartnerAddress != null) {
 697                 context.getContactHelper()
 698                         .setExpirationTimer(conversationPartnerAddress.recipientId(), message.getExpiresInSeconds());
 699             }
 700         }
 701         if (!ignoreAttachments) {
 702             if (message.getAttachments().isPresent()) {
 703                 for (var attachment : message.getAttachments().get()) {
 704                     context.getAttachmentHelper().downloadAttachment(attachment);
 705                 }
 706             }
 707             if (message.getSharedContacts().isPresent()) {
 708                 for (var contact : message.getSharedContacts().get()) {
 709                     if (contact.getAvatar().isPresent()) {
 710                         context.getAttachmentHelper().downloadAttachment(contact.getAvatar().get().getAttachment());
 711                     }
 712                 }
 713             }
 714             if (message.getPreviews().isPresent()) {
 715                 final var previews = message.getPreviews().get();
 716                 for (var preview : previews) {
 717                     if (preview.getImage().isPresent()) {
 718                         context.getAttachmentHelper().downloadAttachment(preview.getImage().get());
 719                     }
 720                 }
 721             }
 722             if (message.getQuote().isPresent()) {
 723                 final var quote = message.getQuote().get();
 724
 725                 for (var quotedAttachment : quote.getAttachments()) {
 726                     final var thumbnail = quotedAttachment.getThumbnail();
 727                     if (thumbnail != null) {
 728                         context.getAttachmentHelper().downloadAttachment(thumbnail);
 729                     }
 730                 }
 731             }
 732         }
 733         if (message.getProfileKey().isPresent()) {
 734             handleIncomingProfileKey(message.getProfileKey().get(), source.recipientId());
 735         }
 736         if (message.getSticker().isPresent()) {
 737             final var messageSticker = message.getSticker().get();
 738             final var stickerPackId = StickerPackId.deserialize(messageSticker.getPackId());
 739             var sticker = account.getStickerStore().getStickerPack(stickerPackId);
 740             if (sticker == null) {
 741                 sticker = new StickerPack(stickerPackId, messageSticker.getPackKey());
 742                 account.getStickerStore().addStickerPack(sticker);
 743             }
 744             context.getJobExecutor().enqueueJob(new RetrieveStickerPackJob(stickerPackId, messageSticker.getPackKey()));
 745         }
 746         return actions;
 747     }
 748
 749     private List<HandleAction> handleSignalServiceStoryMessage(
 750             SignalServiceStoryMessage message, RecipientId source, boolean ignoreAttachments
 751     ) {
 752         var actions = new ArrayList<HandleAction>();
 753         if (message.getGroupContext().isPresent()) {
 754             handleGroupV2Context(message.getGroupContext().get());
 755         }
 756
 757         if (!ignoreAttachments) {
 758             if (message.getFileAttachment().isPresent()) {
 759                 context.getAttachmentHelper().downloadAttachment(message.getFileAttachment().get());
 760             }
 761             if (message.getTextAttachment().isPresent()) {
 762                 final var textAttachment = message.getTextAttachment().get();
 763                 if (textAttachment.getPreview().isPresent()) {
 764                     final var preview = textAttachment.getPreview().get();
 765                     if (preview.getImage().isPresent()) {
 766                         context.getAttachmentHelper().downloadAttachment(preview.getImage().get());
 767                     }
 768                 }
 769             }
 770         }
 771
 772         if (message.getProfileKey().isPresent()) {
 773             handleIncomingProfileKey(message.getProfileKey().get(), source);
 774         }
 775
 776         return actions;
 777     }
 778
 779     private void handleGroupV2Context(final SignalServiceGroupV2 groupContext) {
 780         final var groupMasterKey = groupContext.getMasterKey();
 781
 782         context.getGroupHelper()
 783                 .getOrMigrateGroup(groupMasterKey,
 784                         groupContext.getRevision(),
 785                         groupContext.hasSignedGroupChange() ? groupContext.getSignedGroupChange() : null);
 786     }
 787
 788     private void handleIncomingProfileKey(final byte[] profileKeyBytes, final RecipientId source) {
 789         if (profileKeyBytes.length != 32) {
 790             logger.debug("Received invalid profile key of length {}", profileKeyBytes.length);
 791             return;
 792         }
 793         final ProfileKey profileKey;
 794         try {
 795             profileKey = new ProfileKey(profileKeyBytes);
 796         } catch (InvalidInputException e) {
 797             throw new AssertionError(e);
 798         }
 799         if (account.getSelfRecipientId().equals(source)) {
 800             this.account.setProfileKey(profileKey);
 801         }
 802         this.account.getProfileStore().storeProfileKey(source, profileKey);
 803     }
 804
 805     private DeviceAddress getSender(SignalServiceEnvelope envelope, SignalServiceContent content) {
 806         if (!envelope.isUnidentifiedSender() && envelope.hasSourceUuid()) {
 807             return new DeviceAddress(context.getRecipientHelper().resolveRecipient(envelope.getSourceAddress()),
 808                     envelope.getSourceAddress().getServiceId(),
 809                     envelope.getSourceDevice());
 810         } else {
 811             return new DeviceAddress(context.getRecipientHelper().resolveRecipient(content.getSender()),
 812                     content.getSender().getServiceId(),
 813                     content.getSenderDevice());
 814         }
 815     }
 816
 817     private DeviceAddress getDestination(SignalServiceEnvelope envelope) {
 818         if (!envelope.hasDestinationUuid()) {
 819             return new DeviceAddress(account.getSelfRecipientId(), account.getAci(), account.getDeviceId());
 820         }
 821         final var addressOptional = SignalServiceAddress.fromRaw(envelope.getDestinationUuid(), null);
 822         if (addressOptional.isEmpty()) {
 823             return new DeviceAddress(account.getSelfRecipientId(), account.getAci(), account.getDeviceId());
 824         }
 825         final var address = addressOptional.get();
 826         return new DeviceAddress(context.getRecipientHelper().resolveRecipient(address), address.getServiceId(), 0);
 827     }
 828
 829     private record DeviceAddress(RecipientId recipientId, ServiceId serviceId, int deviceId) {}
 830 }